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77241056 MM |
1 | /* |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
8 | * Copyright(c) 2015 Intel Corporation. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * BSD LICENSE | |
20 | * | |
21 | * Copyright(c) 2015 Intel Corporation. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * | |
27 | * - Redistributions of source code must retain the above copyright | |
28 | * notice, this list of conditions and the following disclaimer. | |
29 | * - Redistributions in binary form must reproduce the above copyright | |
30 | * notice, this list of conditions and the following disclaimer in | |
31 | * the documentation and/or other materials provided with the | |
32 | * distribution. | |
33 | * - Neither the name of Intel Corporation nor the names of its | |
34 | * contributors may be used to endorse or promote products derived | |
35 | * from this software without specific prior written permission. | |
36 | * | |
37 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
38 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
39 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
40 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
41 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
42 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
43 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
44 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
45 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
46 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
47 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 | * | |
49 | */ | |
50 | ||
51 | /* | |
52 | * This file contains all of the code that is specific to the HFI chip | |
53 | */ | |
54 | ||
55 | #include <linux/pci.h> | |
56 | #include <linux/delay.h> | |
57 | #include <linux/interrupt.h> | |
58 | #include <linux/module.h> | |
59 | ||
60 | #include "hfi.h" | |
61 | #include "trace.h" | |
62 | #include "mad.h" | |
63 | #include "pio.h" | |
64 | #include "sdma.h" | |
65 | #include "eprom.h" | |
5d9157aa | 66 | #include "efivar.h" |
77241056 MM |
67 | |
68 | #define NUM_IB_PORTS 1 | |
69 | ||
70 | uint kdeth_qp; | |
71 | module_param_named(kdeth_qp, kdeth_qp, uint, S_IRUGO); | |
72 | MODULE_PARM_DESC(kdeth_qp, "Set the KDETH queue pair prefix"); | |
73 | ||
74 | uint num_vls = HFI1_MAX_VLS_SUPPORTED; | |
75 | module_param(num_vls, uint, S_IRUGO); | |
76 | MODULE_PARM_DESC(num_vls, "Set number of Virtual Lanes to use (1-8)"); | |
77 | ||
78 | /* | |
79 | * Default time to aggregate two 10K packets from the idle state | |
80 | * (timer not running). The timer starts at the end of the first packet, | |
81 | * so only the time for one 10K packet and header plus a bit extra is needed. | |
82 | * 10 * 1024 + 64 header byte = 10304 byte | |
83 | * 10304 byte / 12.5 GB/s = 824.32ns | |
84 | */ | |
85 | uint rcv_intr_timeout = (824 + 16); /* 16 is for coalescing interrupt */ | |
86 | module_param(rcv_intr_timeout, uint, S_IRUGO); | |
87 | MODULE_PARM_DESC(rcv_intr_timeout, "Receive interrupt mitigation timeout in ns"); | |
88 | ||
89 | uint rcv_intr_count = 16; /* same as qib */ | |
90 | module_param(rcv_intr_count, uint, S_IRUGO); | |
91 | MODULE_PARM_DESC(rcv_intr_count, "Receive interrupt mitigation count"); | |
92 | ||
93 | ushort link_crc_mask = SUPPORTED_CRCS; | |
94 | module_param(link_crc_mask, ushort, S_IRUGO); | |
95 | MODULE_PARM_DESC(link_crc_mask, "CRCs to use on the link"); | |
96 | ||
97 | uint loopback; | |
98 | module_param_named(loopback, loopback, uint, S_IRUGO); | |
99 | MODULE_PARM_DESC(loopback, "Put into loopback mode (1 = serdes, 3 = external cable"); | |
100 | ||
101 | /* Other driver tunables */ | |
102 | uint rcv_intr_dynamic = 1; /* enable dynamic mode for rcv int mitigation*/ | |
103 | static ushort crc_14b_sideband = 1; | |
104 | static uint use_flr = 1; | |
105 | uint quick_linkup; /* skip LNI */ | |
106 | ||
107 | struct flag_table { | |
108 | u64 flag; /* the flag */ | |
109 | char *str; /* description string */ | |
110 | u16 extra; /* extra information */ | |
111 | u16 unused0; | |
112 | u32 unused1; | |
113 | }; | |
114 | ||
115 | /* str must be a string constant */ | |
116 | #define FLAG_ENTRY(str, extra, flag) {flag, str, extra} | |
117 | #define FLAG_ENTRY0(str, flag) {flag, str, 0} | |
118 | ||
119 | /* Send Error Consequences */ | |
120 | #define SEC_WRITE_DROPPED 0x1 | |
121 | #define SEC_PACKET_DROPPED 0x2 | |
122 | #define SEC_SC_HALTED 0x4 /* per-context only */ | |
123 | #define SEC_SPC_FREEZE 0x8 /* per-HFI only */ | |
124 | ||
77241056 | 125 | #define MIN_KERNEL_KCTXTS 2 |
82c2611d | 126 | #define FIRST_KERNEL_KCTXT 1 |
77241056 MM |
127 | #define NUM_MAP_REGS 32 |
128 | ||
129 | /* Bit offset into the GUID which carries HFI id information */ | |
130 | #define GUID_HFI_INDEX_SHIFT 39 | |
131 | ||
132 | /* extract the emulation revision */ | |
133 | #define emulator_rev(dd) ((dd)->irev >> 8) | |
134 | /* parallel and serial emulation versions are 3 and 4 respectively */ | |
135 | #define is_emulator_p(dd) ((((dd)->irev) & 0xf) == 3) | |
136 | #define is_emulator_s(dd) ((((dd)->irev) & 0xf) == 4) | |
137 | ||
138 | /* RSM fields */ | |
139 | ||
140 | /* packet type */ | |
141 | #define IB_PACKET_TYPE 2ull | |
142 | #define QW_SHIFT 6ull | |
143 | /* QPN[7..1] */ | |
144 | #define QPN_WIDTH 7ull | |
145 | ||
146 | /* LRH.BTH: QW 0, OFFSET 48 - for match */ | |
147 | #define LRH_BTH_QW 0ull | |
148 | #define LRH_BTH_BIT_OFFSET 48ull | |
149 | #define LRH_BTH_OFFSET(off) ((LRH_BTH_QW << QW_SHIFT) | (off)) | |
150 | #define LRH_BTH_MATCH_OFFSET LRH_BTH_OFFSET(LRH_BTH_BIT_OFFSET) | |
151 | #define LRH_BTH_SELECT | |
152 | #define LRH_BTH_MASK 3ull | |
153 | #define LRH_BTH_VALUE 2ull | |
154 | ||
155 | /* LRH.SC[3..0] QW 0, OFFSET 56 - for match */ | |
156 | #define LRH_SC_QW 0ull | |
157 | #define LRH_SC_BIT_OFFSET 56ull | |
158 | #define LRH_SC_OFFSET(off) ((LRH_SC_QW << QW_SHIFT) | (off)) | |
159 | #define LRH_SC_MATCH_OFFSET LRH_SC_OFFSET(LRH_SC_BIT_OFFSET) | |
160 | #define LRH_SC_MASK 128ull | |
161 | #define LRH_SC_VALUE 0ull | |
162 | ||
163 | /* SC[n..0] QW 0, OFFSET 60 - for select */ | |
164 | #define LRH_SC_SELECT_OFFSET ((LRH_SC_QW << QW_SHIFT) | (60ull)) | |
165 | ||
166 | /* QPN[m+n:1] QW 1, OFFSET 1 */ | |
167 | #define QPN_SELECT_OFFSET ((1ull << QW_SHIFT) | (1ull)) | |
168 | ||
169 | /* defines to build power on SC2VL table */ | |
170 | #define SC2VL_VAL( \ | |
171 | num, \ | |
172 | sc0, sc0val, \ | |
173 | sc1, sc1val, \ | |
174 | sc2, sc2val, \ | |
175 | sc3, sc3val, \ | |
176 | sc4, sc4val, \ | |
177 | sc5, sc5val, \ | |
178 | sc6, sc6val, \ | |
179 | sc7, sc7val) \ | |
180 | ( \ | |
181 | ((u64)(sc0val) << SEND_SC2VLT##num##_SC##sc0##_SHIFT) | \ | |
182 | ((u64)(sc1val) << SEND_SC2VLT##num##_SC##sc1##_SHIFT) | \ | |
183 | ((u64)(sc2val) << SEND_SC2VLT##num##_SC##sc2##_SHIFT) | \ | |
184 | ((u64)(sc3val) << SEND_SC2VLT##num##_SC##sc3##_SHIFT) | \ | |
185 | ((u64)(sc4val) << SEND_SC2VLT##num##_SC##sc4##_SHIFT) | \ | |
186 | ((u64)(sc5val) << SEND_SC2VLT##num##_SC##sc5##_SHIFT) | \ | |
187 | ((u64)(sc6val) << SEND_SC2VLT##num##_SC##sc6##_SHIFT) | \ | |
188 | ((u64)(sc7val) << SEND_SC2VLT##num##_SC##sc7##_SHIFT) \ | |
189 | ) | |
190 | ||
191 | #define DC_SC_VL_VAL( \ | |
192 | range, \ | |
193 | e0, e0val, \ | |
194 | e1, e1val, \ | |
195 | e2, e2val, \ | |
196 | e3, e3val, \ | |
197 | e4, e4val, \ | |
198 | e5, e5val, \ | |
199 | e6, e6val, \ | |
200 | e7, e7val, \ | |
201 | e8, e8val, \ | |
202 | e9, e9val, \ | |
203 | e10, e10val, \ | |
204 | e11, e11val, \ | |
205 | e12, e12val, \ | |
206 | e13, e13val, \ | |
207 | e14, e14val, \ | |
208 | e15, e15val) \ | |
209 | ( \ | |
210 | ((u64)(e0val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e0##_SHIFT) | \ | |
211 | ((u64)(e1val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e1##_SHIFT) | \ | |
212 | ((u64)(e2val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e2##_SHIFT) | \ | |
213 | ((u64)(e3val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e3##_SHIFT) | \ | |
214 | ((u64)(e4val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e4##_SHIFT) | \ | |
215 | ((u64)(e5val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e5##_SHIFT) | \ | |
216 | ((u64)(e6val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e6##_SHIFT) | \ | |
217 | ((u64)(e7val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e7##_SHIFT) | \ | |
218 | ((u64)(e8val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e8##_SHIFT) | \ | |
219 | ((u64)(e9val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e9##_SHIFT) | \ | |
220 | ((u64)(e10val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e10##_SHIFT) | \ | |
221 | ((u64)(e11val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e11##_SHIFT) | \ | |
222 | ((u64)(e12val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e12##_SHIFT) | \ | |
223 | ((u64)(e13val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e13##_SHIFT) | \ | |
224 | ((u64)(e14val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e14##_SHIFT) | \ | |
225 | ((u64)(e15val) << DCC_CFG_SC_VL_TABLE_##range##_ENTRY##e15##_SHIFT) \ | |
226 | ) | |
227 | ||
228 | /* all CceStatus sub-block freeze bits */ | |
229 | #define ALL_FROZE (CCE_STATUS_SDMA_FROZE_SMASK \ | |
230 | | CCE_STATUS_RXE_FROZE_SMASK \ | |
231 | | CCE_STATUS_TXE_FROZE_SMASK \ | |
232 | | CCE_STATUS_TXE_PIO_FROZE_SMASK) | |
233 | /* all CceStatus sub-block TXE pause bits */ | |
234 | #define ALL_TXE_PAUSE (CCE_STATUS_TXE_PIO_PAUSED_SMASK \ | |
235 | | CCE_STATUS_TXE_PAUSED_SMASK \ | |
236 | | CCE_STATUS_SDMA_PAUSED_SMASK) | |
237 | /* all CceStatus sub-block RXE pause bits */ | |
238 | #define ALL_RXE_PAUSE CCE_STATUS_RXE_PAUSED_SMASK | |
239 | ||
240 | /* | |
241 | * CCE Error flags. | |
242 | */ | |
243 | static struct flag_table cce_err_status_flags[] = { | |
244 | /* 0*/ FLAG_ENTRY0("CceCsrParityErr", | |
245 | CCE_ERR_STATUS_CCE_CSR_PARITY_ERR_SMASK), | |
246 | /* 1*/ FLAG_ENTRY0("CceCsrReadBadAddrErr", | |
247 | CCE_ERR_STATUS_CCE_CSR_READ_BAD_ADDR_ERR_SMASK), | |
248 | /* 2*/ FLAG_ENTRY0("CceCsrWriteBadAddrErr", | |
249 | CCE_ERR_STATUS_CCE_CSR_WRITE_BAD_ADDR_ERR_SMASK), | |
250 | /* 3*/ FLAG_ENTRY0("CceTrgtAsyncFifoParityErr", | |
251 | CCE_ERR_STATUS_CCE_TRGT_ASYNC_FIFO_PARITY_ERR_SMASK), | |
252 | /* 4*/ FLAG_ENTRY0("CceTrgtAccessErr", | |
253 | CCE_ERR_STATUS_CCE_TRGT_ACCESS_ERR_SMASK), | |
254 | /* 5*/ FLAG_ENTRY0("CceRspdDataParityErr", | |
255 | CCE_ERR_STATUS_CCE_RSPD_DATA_PARITY_ERR_SMASK), | |
256 | /* 6*/ FLAG_ENTRY0("CceCli0AsyncFifoParityErr", | |
257 | CCE_ERR_STATUS_CCE_CLI0_ASYNC_FIFO_PARITY_ERR_SMASK), | |
258 | /* 7*/ FLAG_ENTRY0("CceCsrCfgBusParityErr", | |
259 | CCE_ERR_STATUS_CCE_CSR_CFG_BUS_PARITY_ERR_SMASK), | |
260 | /* 8*/ FLAG_ENTRY0("CceCli2AsyncFifoParityErr", | |
261 | CCE_ERR_STATUS_CCE_CLI2_ASYNC_FIFO_PARITY_ERR_SMASK), | |
262 | /* 9*/ FLAG_ENTRY0("CceCli1AsyncFifoPioCrdtParityErr", | |
263 | CCE_ERR_STATUS_CCE_CLI1_ASYNC_FIFO_PIO_CRDT_PARITY_ERR_SMASK), | |
264 | /*10*/ FLAG_ENTRY0("CceCli1AsyncFifoPioCrdtParityErr", | |
265 | CCE_ERR_STATUS_CCE_CLI1_ASYNC_FIFO_SDMA_HD_PARITY_ERR_SMASK), | |
266 | /*11*/ FLAG_ENTRY0("CceCli1AsyncFifoRxdmaParityError", | |
267 | CCE_ERR_STATUS_CCE_CLI1_ASYNC_FIFO_RXDMA_PARITY_ERROR_SMASK), | |
268 | /*12*/ FLAG_ENTRY0("CceCli1AsyncFifoDbgParityError", | |
269 | CCE_ERR_STATUS_CCE_CLI1_ASYNC_FIFO_DBG_PARITY_ERROR_SMASK), | |
270 | /*13*/ FLAG_ENTRY0("PcicRetryMemCorErr", | |
271 | CCE_ERR_STATUS_PCIC_RETRY_MEM_COR_ERR_SMASK), | |
272 | /*14*/ FLAG_ENTRY0("PcicRetryMemCorErr", | |
273 | CCE_ERR_STATUS_PCIC_RETRY_SOT_MEM_COR_ERR_SMASK), | |
274 | /*15*/ FLAG_ENTRY0("PcicPostHdQCorErr", | |
275 | CCE_ERR_STATUS_PCIC_POST_HD_QCOR_ERR_SMASK), | |
276 | /*16*/ FLAG_ENTRY0("PcicPostHdQCorErr", | |
277 | CCE_ERR_STATUS_PCIC_POST_DAT_QCOR_ERR_SMASK), | |
278 | /*17*/ FLAG_ENTRY0("PcicPostHdQCorErr", | |
279 | CCE_ERR_STATUS_PCIC_CPL_HD_QCOR_ERR_SMASK), | |
280 | /*18*/ FLAG_ENTRY0("PcicCplDatQCorErr", | |
281 | CCE_ERR_STATUS_PCIC_CPL_DAT_QCOR_ERR_SMASK), | |
282 | /*19*/ FLAG_ENTRY0("PcicNPostHQParityErr", | |
283 | CCE_ERR_STATUS_PCIC_NPOST_HQ_PARITY_ERR_SMASK), | |
284 | /*20*/ FLAG_ENTRY0("PcicNPostDatQParityErr", | |
285 | CCE_ERR_STATUS_PCIC_NPOST_DAT_QPARITY_ERR_SMASK), | |
286 | /*21*/ FLAG_ENTRY0("PcicRetryMemUncErr", | |
287 | CCE_ERR_STATUS_PCIC_RETRY_MEM_UNC_ERR_SMASK), | |
288 | /*22*/ FLAG_ENTRY0("PcicRetrySotMemUncErr", | |
289 | CCE_ERR_STATUS_PCIC_RETRY_SOT_MEM_UNC_ERR_SMASK), | |
290 | /*23*/ FLAG_ENTRY0("PcicPostHdQUncErr", | |
291 | CCE_ERR_STATUS_PCIC_POST_HD_QUNC_ERR_SMASK), | |
292 | /*24*/ FLAG_ENTRY0("PcicPostDatQUncErr", | |
293 | CCE_ERR_STATUS_PCIC_POST_DAT_QUNC_ERR_SMASK), | |
294 | /*25*/ FLAG_ENTRY0("PcicCplHdQUncErr", | |
295 | CCE_ERR_STATUS_PCIC_CPL_HD_QUNC_ERR_SMASK), | |
296 | /*26*/ FLAG_ENTRY0("PcicCplDatQUncErr", | |
297 | CCE_ERR_STATUS_PCIC_CPL_DAT_QUNC_ERR_SMASK), | |
298 | /*27*/ FLAG_ENTRY0("PcicTransmitFrontParityErr", | |
299 | CCE_ERR_STATUS_PCIC_TRANSMIT_FRONT_PARITY_ERR_SMASK), | |
300 | /*28*/ FLAG_ENTRY0("PcicTransmitBackParityErr", | |
301 | CCE_ERR_STATUS_PCIC_TRANSMIT_BACK_PARITY_ERR_SMASK), | |
302 | /*29*/ FLAG_ENTRY0("PcicReceiveParityErr", | |
303 | CCE_ERR_STATUS_PCIC_RECEIVE_PARITY_ERR_SMASK), | |
304 | /*30*/ FLAG_ENTRY0("CceTrgtCplTimeoutErr", | |
305 | CCE_ERR_STATUS_CCE_TRGT_CPL_TIMEOUT_ERR_SMASK), | |
306 | /*31*/ FLAG_ENTRY0("LATriggered", | |
307 | CCE_ERR_STATUS_LA_TRIGGERED_SMASK), | |
308 | /*32*/ FLAG_ENTRY0("CceSegReadBadAddrErr", | |
309 | CCE_ERR_STATUS_CCE_SEG_READ_BAD_ADDR_ERR_SMASK), | |
310 | /*33*/ FLAG_ENTRY0("CceSegWriteBadAddrErr", | |
311 | CCE_ERR_STATUS_CCE_SEG_WRITE_BAD_ADDR_ERR_SMASK), | |
312 | /*34*/ FLAG_ENTRY0("CceRcplAsyncFifoParityErr", | |
313 | CCE_ERR_STATUS_CCE_RCPL_ASYNC_FIFO_PARITY_ERR_SMASK), | |
314 | /*35*/ FLAG_ENTRY0("CceRxdmaConvFifoParityErr", | |
315 | CCE_ERR_STATUS_CCE_RXDMA_CONV_FIFO_PARITY_ERR_SMASK), | |
316 | /*36*/ FLAG_ENTRY0("CceMsixTableCorErr", | |
317 | CCE_ERR_STATUS_CCE_MSIX_TABLE_COR_ERR_SMASK), | |
318 | /*37*/ FLAG_ENTRY0("CceMsixTableUncErr", | |
319 | CCE_ERR_STATUS_CCE_MSIX_TABLE_UNC_ERR_SMASK), | |
320 | /*38*/ FLAG_ENTRY0("CceIntMapCorErr", | |
321 | CCE_ERR_STATUS_CCE_INT_MAP_COR_ERR_SMASK), | |
322 | /*39*/ FLAG_ENTRY0("CceIntMapUncErr", | |
323 | CCE_ERR_STATUS_CCE_INT_MAP_UNC_ERR_SMASK), | |
324 | /*40*/ FLAG_ENTRY0("CceMsixCsrParityErr", | |
325 | CCE_ERR_STATUS_CCE_MSIX_CSR_PARITY_ERR_SMASK), | |
326 | /*41-63 reserved*/ | |
327 | }; | |
328 | ||
329 | /* | |
330 | * Misc Error flags | |
331 | */ | |
332 | #define MES(text) MISC_ERR_STATUS_MISC_##text##_ERR_SMASK | |
333 | static struct flag_table misc_err_status_flags[] = { | |
334 | /* 0*/ FLAG_ENTRY0("CSR_PARITY", MES(CSR_PARITY)), | |
335 | /* 1*/ FLAG_ENTRY0("CSR_READ_BAD_ADDR", MES(CSR_READ_BAD_ADDR)), | |
336 | /* 2*/ FLAG_ENTRY0("CSR_WRITE_BAD_ADDR", MES(CSR_WRITE_BAD_ADDR)), | |
337 | /* 3*/ FLAG_ENTRY0("SBUS_WRITE_FAILED", MES(SBUS_WRITE_FAILED)), | |
338 | /* 4*/ FLAG_ENTRY0("KEY_MISMATCH", MES(KEY_MISMATCH)), | |
339 | /* 5*/ FLAG_ENTRY0("FW_AUTH_FAILED", MES(FW_AUTH_FAILED)), | |
340 | /* 6*/ FLAG_ENTRY0("EFUSE_CSR_PARITY", MES(EFUSE_CSR_PARITY)), | |
341 | /* 7*/ FLAG_ENTRY0("EFUSE_READ_BAD_ADDR", MES(EFUSE_READ_BAD_ADDR)), | |
342 | /* 8*/ FLAG_ENTRY0("EFUSE_WRITE", MES(EFUSE_WRITE)), | |
343 | /* 9*/ FLAG_ENTRY0("EFUSE_DONE_PARITY", MES(EFUSE_DONE_PARITY)), | |
344 | /*10*/ FLAG_ENTRY0("INVALID_EEP_CMD", MES(INVALID_EEP_CMD)), | |
345 | /*11*/ FLAG_ENTRY0("MBIST_FAIL", MES(MBIST_FAIL)), | |
346 | /*12*/ FLAG_ENTRY0("PLL_LOCK_FAIL", MES(PLL_LOCK_FAIL)) | |
347 | }; | |
348 | ||
349 | /* | |
350 | * TXE PIO Error flags and consequences | |
351 | */ | |
352 | static struct flag_table pio_err_status_flags[] = { | |
353 | /* 0*/ FLAG_ENTRY("PioWriteBadCtxt", | |
354 | SEC_WRITE_DROPPED, | |
355 | SEND_PIO_ERR_STATUS_PIO_WRITE_BAD_CTXT_ERR_SMASK), | |
356 | /* 1*/ FLAG_ENTRY("PioWriteAddrParity", | |
357 | SEC_SPC_FREEZE, | |
358 | SEND_PIO_ERR_STATUS_PIO_WRITE_ADDR_PARITY_ERR_SMASK), | |
359 | /* 2*/ FLAG_ENTRY("PioCsrParity", | |
360 | SEC_SPC_FREEZE, | |
361 | SEND_PIO_ERR_STATUS_PIO_CSR_PARITY_ERR_SMASK), | |
362 | /* 3*/ FLAG_ENTRY("PioSbMemFifo0", | |
363 | SEC_SPC_FREEZE, | |
364 | SEND_PIO_ERR_STATUS_PIO_SB_MEM_FIFO0_ERR_SMASK), | |
365 | /* 4*/ FLAG_ENTRY("PioSbMemFifo1", | |
366 | SEC_SPC_FREEZE, | |
367 | SEND_PIO_ERR_STATUS_PIO_SB_MEM_FIFO1_ERR_SMASK), | |
368 | /* 5*/ FLAG_ENTRY("PioPccFifoParity", | |
369 | SEC_SPC_FREEZE, | |
370 | SEND_PIO_ERR_STATUS_PIO_PCC_FIFO_PARITY_ERR_SMASK), | |
371 | /* 6*/ FLAG_ENTRY("PioPecFifoParity", | |
372 | SEC_SPC_FREEZE, | |
373 | SEND_PIO_ERR_STATUS_PIO_PEC_FIFO_PARITY_ERR_SMASK), | |
374 | /* 7*/ FLAG_ENTRY("PioSbrdctlCrrelParity", | |
375 | SEC_SPC_FREEZE, | |
376 | SEND_PIO_ERR_STATUS_PIO_SBRDCTL_CRREL_PARITY_ERR_SMASK), | |
377 | /* 8*/ FLAG_ENTRY("PioSbrdctrlCrrelFifoParity", | |
378 | SEC_SPC_FREEZE, | |
379 | SEND_PIO_ERR_STATUS_PIO_SBRDCTRL_CRREL_FIFO_PARITY_ERR_SMASK), | |
380 | /* 9*/ FLAG_ENTRY("PioPktEvictFifoParityErr", | |
381 | SEC_SPC_FREEZE, | |
382 | SEND_PIO_ERR_STATUS_PIO_PKT_EVICT_FIFO_PARITY_ERR_SMASK), | |
383 | /*10*/ FLAG_ENTRY("PioSmPktResetParity", | |
384 | SEC_SPC_FREEZE, | |
385 | SEND_PIO_ERR_STATUS_PIO_SM_PKT_RESET_PARITY_ERR_SMASK), | |
386 | /*11*/ FLAG_ENTRY("PioVlLenMemBank0Unc", | |
387 | SEC_SPC_FREEZE, | |
388 | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK0_UNC_ERR_SMASK), | |
389 | /*12*/ FLAG_ENTRY("PioVlLenMemBank1Unc", | |
390 | SEC_SPC_FREEZE, | |
391 | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK1_UNC_ERR_SMASK), | |
392 | /*13*/ FLAG_ENTRY("PioVlLenMemBank0Cor", | |
393 | 0, | |
394 | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK0_COR_ERR_SMASK), | |
395 | /*14*/ FLAG_ENTRY("PioVlLenMemBank1Cor", | |
396 | 0, | |
397 | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK1_COR_ERR_SMASK), | |
398 | /*15*/ FLAG_ENTRY("PioCreditRetFifoParity", | |
399 | SEC_SPC_FREEZE, | |
400 | SEND_PIO_ERR_STATUS_PIO_CREDIT_RET_FIFO_PARITY_ERR_SMASK), | |
401 | /*16*/ FLAG_ENTRY("PioPpmcPblFifo", | |
402 | SEC_SPC_FREEZE, | |
403 | SEND_PIO_ERR_STATUS_PIO_PPMC_PBL_FIFO_ERR_SMASK), | |
404 | /*17*/ FLAG_ENTRY("PioInitSmIn", | |
405 | 0, | |
406 | SEND_PIO_ERR_STATUS_PIO_INIT_SM_IN_ERR_SMASK), | |
407 | /*18*/ FLAG_ENTRY("PioPktEvictSmOrArbSm", | |
408 | SEC_SPC_FREEZE, | |
409 | SEND_PIO_ERR_STATUS_PIO_PKT_EVICT_SM_OR_ARB_SM_ERR_SMASK), | |
410 | /*19*/ FLAG_ENTRY("PioHostAddrMemUnc", | |
411 | SEC_SPC_FREEZE, | |
412 | SEND_PIO_ERR_STATUS_PIO_HOST_ADDR_MEM_UNC_ERR_SMASK), | |
413 | /*20*/ FLAG_ENTRY("PioHostAddrMemCor", | |
414 | 0, | |
415 | SEND_PIO_ERR_STATUS_PIO_HOST_ADDR_MEM_COR_ERR_SMASK), | |
416 | /*21*/ FLAG_ENTRY("PioWriteDataParity", | |
417 | SEC_SPC_FREEZE, | |
418 | SEND_PIO_ERR_STATUS_PIO_WRITE_DATA_PARITY_ERR_SMASK), | |
419 | /*22*/ FLAG_ENTRY("PioStateMachine", | |
420 | SEC_SPC_FREEZE, | |
421 | SEND_PIO_ERR_STATUS_PIO_STATE_MACHINE_ERR_SMASK), | |
422 | /*23*/ FLAG_ENTRY("PioWriteQwValidParity", | |
423 | SEC_WRITE_DROPPED|SEC_SPC_FREEZE, | |
424 | SEND_PIO_ERR_STATUS_PIO_WRITE_QW_VALID_PARITY_ERR_SMASK), | |
425 | /*24*/ FLAG_ENTRY("PioBlockQwCountParity", | |
426 | SEC_WRITE_DROPPED|SEC_SPC_FREEZE, | |
427 | SEND_PIO_ERR_STATUS_PIO_BLOCK_QW_COUNT_PARITY_ERR_SMASK), | |
428 | /*25*/ FLAG_ENTRY("PioVlfVlLenParity", | |
429 | SEC_SPC_FREEZE, | |
430 | SEND_PIO_ERR_STATUS_PIO_VLF_VL_LEN_PARITY_ERR_SMASK), | |
431 | /*26*/ FLAG_ENTRY("PioVlfSopParity", | |
432 | SEC_SPC_FREEZE, | |
433 | SEND_PIO_ERR_STATUS_PIO_VLF_SOP_PARITY_ERR_SMASK), | |
434 | /*27*/ FLAG_ENTRY("PioVlFifoParity", | |
435 | SEC_SPC_FREEZE, | |
436 | SEND_PIO_ERR_STATUS_PIO_VL_FIFO_PARITY_ERR_SMASK), | |
437 | /*28*/ FLAG_ENTRY("PioPpmcBqcMemParity", | |
438 | SEC_SPC_FREEZE, | |
439 | SEND_PIO_ERR_STATUS_PIO_PPMC_BQC_MEM_PARITY_ERR_SMASK), | |
440 | /*29*/ FLAG_ENTRY("PioPpmcSopLen", | |
441 | SEC_SPC_FREEZE, | |
442 | SEND_PIO_ERR_STATUS_PIO_PPMC_SOP_LEN_ERR_SMASK), | |
443 | /*30-31 reserved*/ | |
444 | /*32*/ FLAG_ENTRY("PioCurrentFreeCntParity", | |
445 | SEC_SPC_FREEZE, | |
446 | SEND_PIO_ERR_STATUS_PIO_CURRENT_FREE_CNT_PARITY_ERR_SMASK), | |
447 | /*33*/ FLAG_ENTRY("PioLastReturnedCntParity", | |
448 | SEC_SPC_FREEZE, | |
449 | SEND_PIO_ERR_STATUS_PIO_LAST_RETURNED_CNT_PARITY_ERR_SMASK), | |
450 | /*34*/ FLAG_ENTRY("PioPccSopHeadParity", | |
451 | SEC_SPC_FREEZE, | |
452 | SEND_PIO_ERR_STATUS_PIO_PCC_SOP_HEAD_PARITY_ERR_SMASK), | |
453 | /*35*/ FLAG_ENTRY("PioPecSopHeadParityErr", | |
454 | SEC_SPC_FREEZE, | |
455 | SEND_PIO_ERR_STATUS_PIO_PEC_SOP_HEAD_PARITY_ERR_SMASK), | |
456 | /*36-63 reserved*/ | |
457 | }; | |
458 | ||
459 | /* TXE PIO errors that cause an SPC freeze */ | |
460 | #define ALL_PIO_FREEZE_ERR \ | |
461 | (SEND_PIO_ERR_STATUS_PIO_WRITE_ADDR_PARITY_ERR_SMASK \ | |
462 | | SEND_PIO_ERR_STATUS_PIO_CSR_PARITY_ERR_SMASK \ | |
463 | | SEND_PIO_ERR_STATUS_PIO_SB_MEM_FIFO0_ERR_SMASK \ | |
464 | | SEND_PIO_ERR_STATUS_PIO_SB_MEM_FIFO1_ERR_SMASK \ | |
465 | | SEND_PIO_ERR_STATUS_PIO_PCC_FIFO_PARITY_ERR_SMASK \ | |
466 | | SEND_PIO_ERR_STATUS_PIO_PEC_FIFO_PARITY_ERR_SMASK \ | |
467 | | SEND_PIO_ERR_STATUS_PIO_SBRDCTL_CRREL_PARITY_ERR_SMASK \ | |
468 | | SEND_PIO_ERR_STATUS_PIO_SBRDCTRL_CRREL_FIFO_PARITY_ERR_SMASK \ | |
469 | | SEND_PIO_ERR_STATUS_PIO_PKT_EVICT_FIFO_PARITY_ERR_SMASK \ | |
470 | | SEND_PIO_ERR_STATUS_PIO_SM_PKT_RESET_PARITY_ERR_SMASK \ | |
471 | | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK0_UNC_ERR_SMASK \ | |
472 | | SEND_PIO_ERR_STATUS_PIO_VL_LEN_MEM_BANK1_UNC_ERR_SMASK \ | |
473 | | SEND_PIO_ERR_STATUS_PIO_CREDIT_RET_FIFO_PARITY_ERR_SMASK \ | |
474 | | SEND_PIO_ERR_STATUS_PIO_PPMC_PBL_FIFO_ERR_SMASK \ | |
475 | | SEND_PIO_ERR_STATUS_PIO_PKT_EVICT_SM_OR_ARB_SM_ERR_SMASK \ | |
476 | | SEND_PIO_ERR_STATUS_PIO_HOST_ADDR_MEM_UNC_ERR_SMASK \ | |
477 | | SEND_PIO_ERR_STATUS_PIO_WRITE_DATA_PARITY_ERR_SMASK \ | |
478 | | SEND_PIO_ERR_STATUS_PIO_STATE_MACHINE_ERR_SMASK \ | |
479 | | SEND_PIO_ERR_STATUS_PIO_WRITE_QW_VALID_PARITY_ERR_SMASK \ | |
480 | | SEND_PIO_ERR_STATUS_PIO_BLOCK_QW_COUNT_PARITY_ERR_SMASK \ | |
481 | | SEND_PIO_ERR_STATUS_PIO_VLF_VL_LEN_PARITY_ERR_SMASK \ | |
482 | | SEND_PIO_ERR_STATUS_PIO_VLF_SOP_PARITY_ERR_SMASK \ | |
483 | | SEND_PIO_ERR_STATUS_PIO_VL_FIFO_PARITY_ERR_SMASK \ | |
484 | | SEND_PIO_ERR_STATUS_PIO_PPMC_BQC_MEM_PARITY_ERR_SMASK \ | |
485 | | SEND_PIO_ERR_STATUS_PIO_PPMC_SOP_LEN_ERR_SMASK \ | |
486 | | SEND_PIO_ERR_STATUS_PIO_CURRENT_FREE_CNT_PARITY_ERR_SMASK \ | |
487 | | SEND_PIO_ERR_STATUS_PIO_LAST_RETURNED_CNT_PARITY_ERR_SMASK \ | |
488 | | SEND_PIO_ERR_STATUS_PIO_PCC_SOP_HEAD_PARITY_ERR_SMASK \ | |
489 | | SEND_PIO_ERR_STATUS_PIO_PEC_SOP_HEAD_PARITY_ERR_SMASK) | |
490 | ||
491 | /* | |
492 | * TXE SDMA Error flags | |
493 | */ | |
494 | static struct flag_table sdma_err_status_flags[] = { | |
495 | /* 0*/ FLAG_ENTRY0("SDmaRpyTagErr", | |
496 | SEND_DMA_ERR_STATUS_SDMA_RPY_TAG_ERR_SMASK), | |
497 | /* 1*/ FLAG_ENTRY0("SDmaCsrParityErr", | |
498 | SEND_DMA_ERR_STATUS_SDMA_CSR_PARITY_ERR_SMASK), | |
499 | /* 2*/ FLAG_ENTRY0("SDmaPcieReqTrackingUncErr", | |
500 | SEND_DMA_ERR_STATUS_SDMA_PCIE_REQ_TRACKING_UNC_ERR_SMASK), | |
501 | /* 3*/ FLAG_ENTRY0("SDmaPcieReqTrackingCorErr", | |
502 | SEND_DMA_ERR_STATUS_SDMA_PCIE_REQ_TRACKING_COR_ERR_SMASK), | |
503 | /*04-63 reserved*/ | |
504 | }; | |
505 | ||
506 | /* TXE SDMA errors that cause an SPC freeze */ | |
507 | #define ALL_SDMA_FREEZE_ERR \ | |
508 | (SEND_DMA_ERR_STATUS_SDMA_RPY_TAG_ERR_SMASK \ | |
509 | | SEND_DMA_ERR_STATUS_SDMA_CSR_PARITY_ERR_SMASK \ | |
510 | | SEND_DMA_ERR_STATUS_SDMA_PCIE_REQ_TRACKING_UNC_ERR_SMASK) | |
511 | ||
512 | /* | |
513 | * TXE Egress Error flags | |
514 | */ | |
515 | #define SEES(text) SEND_EGRESS_ERR_STATUS_##text##_ERR_SMASK | |
516 | static struct flag_table egress_err_status_flags[] = { | |
517 | /* 0*/ FLAG_ENTRY0("TxPktIntegrityMemCorErr", SEES(TX_PKT_INTEGRITY_MEM_COR)), | |
518 | /* 1*/ FLAG_ENTRY0("TxPktIntegrityMemUncErr", SEES(TX_PKT_INTEGRITY_MEM_UNC)), | |
519 | /* 2 reserved */ | |
520 | /* 3*/ FLAG_ENTRY0("TxEgressFifoUnderrunOrParityErr", | |
521 | SEES(TX_EGRESS_FIFO_UNDERRUN_OR_PARITY)), | |
522 | /* 4*/ FLAG_ENTRY0("TxLinkdownErr", SEES(TX_LINKDOWN)), | |
523 | /* 5*/ FLAG_ENTRY0("TxIncorrectLinkStateErr", SEES(TX_INCORRECT_LINK_STATE)), | |
524 | /* 6 reserved */ | |
525 | /* 7*/ FLAG_ENTRY0("TxPioLaunchIntfParityErr", | |
526 | SEES(TX_PIO_LAUNCH_INTF_PARITY)), | |
527 | /* 8*/ FLAG_ENTRY0("TxSdmaLaunchIntfParityErr", | |
528 | SEES(TX_SDMA_LAUNCH_INTF_PARITY)), | |
529 | /* 9-10 reserved */ | |
530 | /*11*/ FLAG_ENTRY0("TxSbrdCtlStateMachineParityErr", | |
531 | SEES(TX_SBRD_CTL_STATE_MACHINE_PARITY)), | |
532 | /*12*/ FLAG_ENTRY0("TxIllegalVLErr", SEES(TX_ILLEGAL_VL)), | |
533 | /*13*/ FLAG_ENTRY0("TxLaunchCsrParityErr", SEES(TX_LAUNCH_CSR_PARITY)), | |
534 | /*14*/ FLAG_ENTRY0("TxSbrdCtlCsrParityErr", SEES(TX_SBRD_CTL_CSR_PARITY)), | |
535 | /*15*/ FLAG_ENTRY0("TxConfigParityErr", SEES(TX_CONFIG_PARITY)), | |
536 | /*16*/ FLAG_ENTRY0("TxSdma0DisallowedPacketErr", | |
537 | SEES(TX_SDMA0_DISALLOWED_PACKET)), | |
538 | /*17*/ FLAG_ENTRY0("TxSdma1DisallowedPacketErr", | |
539 | SEES(TX_SDMA1_DISALLOWED_PACKET)), | |
540 | /*18*/ FLAG_ENTRY0("TxSdma2DisallowedPacketErr", | |
541 | SEES(TX_SDMA2_DISALLOWED_PACKET)), | |
542 | /*19*/ FLAG_ENTRY0("TxSdma3DisallowedPacketErr", | |
543 | SEES(TX_SDMA3_DISALLOWED_PACKET)), | |
544 | /*20*/ FLAG_ENTRY0("TxSdma4DisallowedPacketErr", | |
545 | SEES(TX_SDMA4_DISALLOWED_PACKET)), | |
546 | /*21*/ FLAG_ENTRY0("TxSdma5DisallowedPacketErr", | |
547 | SEES(TX_SDMA5_DISALLOWED_PACKET)), | |
548 | /*22*/ FLAG_ENTRY0("TxSdma6DisallowedPacketErr", | |
549 | SEES(TX_SDMA6_DISALLOWED_PACKET)), | |
550 | /*23*/ FLAG_ENTRY0("TxSdma7DisallowedPacketErr", | |
551 | SEES(TX_SDMA7_DISALLOWED_PACKET)), | |
552 | /*24*/ FLAG_ENTRY0("TxSdma8DisallowedPacketErr", | |
553 | SEES(TX_SDMA8_DISALLOWED_PACKET)), | |
554 | /*25*/ FLAG_ENTRY0("TxSdma9DisallowedPacketErr", | |
555 | SEES(TX_SDMA9_DISALLOWED_PACKET)), | |
556 | /*26*/ FLAG_ENTRY0("TxSdma10DisallowedPacketErr", | |
557 | SEES(TX_SDMA10_DISALLOWED_PACKET)), | |
558 | /*27*/ FLAG_ENTRY0("TxSdma11DisallowedPacketErr", | |
559 | SEES(TX_SDMA11_DISALLOWED_PACKET)), | |
560 | /*28*/ FLAG_ENTRY0("TxSdma12DisallowedPacketErr", | |
561 | SEES(TX_SDMA12_DISALLOWED_PACKET)), | |
562 | /*29*/ FLAG_ENTRY0("TxSdma13DisallowedPacketErr", | |
563 | SEES(TX_SDMA13_DISALLOWED_PACKET)), | |
564 | /*30*/ FLAG_ENTRY0("TxSdma14DisallowedPacketErr", | |
565 | SEES(TX_SDMA14_DISALLOWED_PACKET)), | |
566 | /*31*/ FLAG_ENTRY0("TxSdma15DisallowedPacketErr", | |
567 | SEES(TX_SDMA15_DISALLOWED_PACKET)), | |
568 | /*32*/ FLAG_ENTRY0("TxLaunchFifo0UncOrParityErr", | |
569 | SEES(TX_LAUNCH_FIFO0_UNC_OR_PARITY)), | |
570 | /*33*/ FLAG_ENTRY0("TxLaunchFifo1UncOrParityErr", | |
571 | SEES(TX_LAUNCH_FIFO1_UNC_OR_PARITY)), | |
572 | /*34*/ FLAG_ENTRY0("TxLaunchFifo2UncOrParityErr", | |
573 | SEES(TX_LAUNCH_FIFO2_UNC_OR_PARITY)), | |
574 | /*35*/ FLAG_ENTRY0("TxLaunchFifo3UncOrParityErr", | |
575 | SEES(TX_LAUNCH_FIFO3_UNC_OR_PARITY)), | |
576 | /*36*/ FLAG_ENTRY0("TxLaunchFifo4UncOrParityErr", | |
577 | SEES(TX_LAUNCH_FIFO4_UNC_OR_PARITY)), | |
578 | /*37*/ FLAG_ENTRY0("TxLaunchFifo5UncOrParityErr", | |
579 | SEES(TX_LAUNCH_FIFO5_UNC_OR_PARITY)), | |
580 | /*38*/ FLAG_ENTRY0("TxLaunchFifo6UncOrParityErr", | |
581 | SEES(TX_LAUNCH_FIFO6_UNC_OR_PARITY)), | |
582 | /*39*/ FLAG_ENTRY0("TxLaunchFifo7UncOrParityErr", | |
583 | SEES(TX_LAUNCH_FIFO7_UNC_OR_PARITY)), | |
584 | /*40*/ FLAG_ENTRY0("TxLaunchFifo8UncOrParityErr", | |
585 | SEES(TX_LAUNCH_FIFO8_UNC_OR_PARITY)), | |
586 | /*41*/ FLAG_ENTRY0("TxCreditReturnParityErr", SEES(TX_CREDIT_RETURN_PARITY)), | |
587 | /*42*/ FLAG_ENTRY0("TxSbHdrUncErr", SEES(TX_SB_HDR_UNC)), | |
588 | /*43*/ FLAG_ENTRY0("TxReadSdmaMemoryUncErr", SEES(TX_READ_SDMA_MEMORY_UNC)), | |
589 | /*44*/ FLAG_ENTRY0("TxReadPioMemoryUncErr", SEES(TX_READ_PIO_MEMORY_UNC)), | |
590 | /*45*/ FLAG_ENTRY0("TxEgressFifoUncErr", SEES(TX_EGRESS_FIFO_UNC)), | |
591 | /*46*/ FLAG_ENTRY0("TxHcrcInsertionErr", SEES(TX_HCRC_INSERTION)), | |
592 | /*47*/ FLAG_ENTRY0("TxCreditReturnVLErr", SEES(TX_CREDIT_RETURN_VL)), | |
593 | /*48*/ FLAG_ENTRY0("TxLaunchFifo0CorErr", SEES(TX_LAUNCH_FIFO0_COR)), | |
594 | /*49*/ FLAG_ENTRY0("TxLaunchFifo1CorErr", SEES(TX_LAUNCH_FIFO1_COR)), | |
595 | /*50*/ FLAG_ENTRY0("TxLaunchFifo2CorErr", SEES(TX_LAUNCH_FIFO2_COR)), | |
596 | /*51*/ FLAG_ENTRY0("TxLaunchFifo3CorErr", SEES(TX_LAUNCH_FIFO3_COR)), | |
597 | /*52*/ FLAG_ENTRY0("TxLaunchFifo4CorErr", SEES(TX_LAUNCH_FIFO4_COR)), | |
598 | /*53*/ FLAG_ENTRY0("TxLaunchFifo5CorErr", SEES(TX_LAUNCH_FIFO5_COR)), | |
599 | /*54*/ FLAG_ENTRY0("TxLaunchFifo6CorErr", SEES(TX_LAUNCH_FIFO6_COR)), | |
600 | /*55*/ FLAG_ENTRY0("TxLaunchFifo7CorErr", SEES(TX_LAUNCH_FIFO7_COR)), | |
601 | /*56*/ FLAG_ENTRY0("TxLaunchFifo8CorErr", SEES(TX_LAUNCH_FIFO8_COR)), | |
602 | /*57*/ FLAG_ENTRY0("TxCreditOverrunErr", SEES(TX_CREDIT_OVERRUN)), | |
603 | /*58*/ FLAG_ENTRY0("TxSbHdrCorErr", SEES(TX_SB_HDR_COR)), | |
604 | /*59*/ FLAG_ENTRY0("TxReadSdmaMemoryCorErr", SEES(TX_READ_SDMA_MEMORY_COR)), | |
605 | /*60*/ FLAG_ENTRY0("TxReadPioMemoryCorErr", SEES(TX_READ_PIO_MEMORY_COR)), | |
606 | /*61*/ FLAG_ENTRY0("TxEgressFifoCorErr", SEES(TX_EGRESS_FIFO_COR)), | |
607 | /*62*/ FLAG_ENTRY0("TxReadSdmaMemoryCsrUncErr", | |
608 | SEES(TX_READ_SDMA_MEMORY_CSR_UNC)), | |
609 | /*63*/ FLAG_ENTRY0("TxReadPioMemoryCsrUncErr", | |
610 | SEES(TX_READ_PIO_MEMORY_CSR_UNC)), | |
611 | }; | |
612 | ||
613 | /* | |
614 | * TXE Egress Error Info flags | |
615 | */ | |
616 | #define SEEI(text) SEND_EGRESS_ERR_INFO_##text##_ERR_SMASK | |
617 | static struct flag_table egress_err_info_flags[] = { | |
618 | /* 0*/ FLAG_ENTRY0("Reserved", 0ull), | |
619 | /* 1*/ FLAG_ENTRY0("VLErr", SEEI(VL)), | |
620 | /* 2*/ FLAG_ENTRY0("JobKeyErr", SEEI(JOB_KEY)), | |
621 | /* 3*/ FLAG_ENTRY0("JobKeyErr", SEEI(JOB_KEY)), | |
622 | /* 4*/ FLAG_ENTRY0("PartitionKeyErr", SEEI(PARTITION_KEY)), | |
623 | /* 5*/ FLAG_ENTRY0("SLIDErr", SEEI(SLID)), | |
624 | /* 6*/ FLAG_ENTRY0("OpcodeErr", SEEI(OPCODE)), | |
625 | /* 7*/ FLAG_ENTRY0("VLMappingErr", SEEI(VL_MAPPING)), | |
626 | /* 8*/ FLAG_ENTRY0("RawErr", SEEI(RAW)), | |
627 | /* 9*/ FLAG_ENTRY0("RawIPv6Err", SEEI(RAW_IPV6)), | |
628 | /*10*/ FLAG_ENTRY0("GRHErr", SEEI(GRH)), | |
629 | /*11*/ FLAG_ENTRY0("BypassErr", SEEI(BYPASS)), | |
630 | /*12*/ FLAG_ENTRY0("KDETHPacketsErr", SEEI(KDETH_PACKETS)), | |
631 | /*13*/ FLAG_ENTRY0("NonKDETHPacketsErr", SEEI(NON_KDETH_PACKETS)), | |
632 | /*14*/ FLAG_ENTRY0("TooSmallIBPacketsErr", SEEI(TOO_SMALL_IB_PACKETS)), | |
633 | /*15*/ FLAG_ENTRY0("TooSmallBypassPacketsErr", SEEI(TOO_SMALL_BYPASS_PACKETS)), | |
634 | /*16*/ FLAG_ENTRY0("PbcTestErr", SEEI(PBC_TEST)), | |
635 | /*17*/ FLAG_ENTRY0("BadPktLenErr", SEEI(BAD_PKT_LEN)), | |
636 | /*18*/ FLAG_ENTRY0("TooLongIBPacketErr", SEEI(TOO_LONG_IB_PACKET)), | |
637 | /*19*/ FLAG_ENTRY0("TooLongBypassPacketsErr", SEEI(TOO_LONG_BYPASS_PACKETS)), | |
638 | /*20*/ FLAG_ENTRY0("PbcStaticRateControlErr", SEEI(PBC_STATIC_RATE_CONTROL)), | |
639 | /*21*/ FLAG_ENTRY0("BypassBadPktLenErr", SEEI(BAD_PKT_LEN)), | |
640 | }; | |
641 | ||
642 | /* TXE Egress errors that cause an SPC freeze */ | |
643 | #define ALL_TXE_EGRESS_FREEZE_ERR \ | |
644 | (SEES(TX_EGRESS_FIFO_UNDERRUN_OR_PARITY) \ | |
645 | | SEES(TX_PIO_LAUNCH_INTF_PARITY) \ | |
646 | | SEES(TX_SDMA_LAUNCH_INTF_PARITY) \ | |
647 | | SEES(TX_SBRD_CTL_STATE_MACHINE_PARITY) \ | |
648 | | SEES(TX_LAUNCH_CSR_PARITY) \ | |
649 | | SEES(TX_SBRD_CTL_CSR_PARITY) \ | |
650 | | SEES(TX_CONFIG_PARITY) \ | |
651 | | SEES(TX_LAUNCH_FIFO0_UNC_OR_PARITY) \ | |
652 | | SEES(TX_LAUNCH_FIFO1_UNC_OR_PARITY) \ | |
653 | | SEES(TX_LAUNCH_FIFO2_UNC_OR_PARITY) \ | |
654 | | SEES(TX_LAUNCH_FIFO3_UNC_OR_PARITY) \ | |
655 | | SEES(TX_LAUNCH_FIFO4_UNC_OR_PARITY) \ | |
656 | | SEES(TX_LAUNCH_FIFO5_UNC_OR_PARITY) \ | |
657 | | SEES(TX_LAUNCH_FIFO6_UNC_OR_PARITY) \ | |
658 | | SEES(TX_LAUNCH_FIFO7_UNC_OR_PARITY) \ | |
659 | | SEES(TX_LAUNCH_FIFO8_UNC_OR_PARITY) \ | |
660 | | SEES(TX_CREDIT_RETURN_PARITY)) | |
661 | ||
662 | /* | |
663 | * TXE Send error flags | |
664 | */ | |
665 | #define SES(name) SEND_ERR_STATUS_SEND_##name##_ERR_SMASK | |
666 | static struct flag_table send_err_status_flags[] = { | |
667 | /* 0*/ FLAG_ENTRY0("SDmaRpyTagErr", SES(CSR_PARITY)), | |
668 | /* 1*/ FLAG_ENTRY0("SendCsrReadBadAddrErr", SES(CSR_READ_BAD_ADDR)), | |
669 | /* 2*/ FLAG_ENTRY0("SendCsrWriteBadAddrErr", SES(CSR_WRITE_BAD_ADDR)) | |
670 | }; | |
671 | ||
672 | /* | |
673 | * TXE Send Context Error flags and consequences | |
674 | */ | |
675 | static struct flag_table sc_err_status_flags[] = { | |
676 | /* 0*/ FLAG_ENTRY("InconsistentSop", | |
677 | SEC_PACKET_DROPPED | SEC_SC_HALTED, | |
678 | SEND_CTXT_ERR_STATUS_PIO_INCONSISTENT_SOP_ERR_SMASK), | |
679 | /* 1*/ FLAG_ENTRY("DisallowedPacket", | |
680 | SEC_PACKET_DROPPED | SEC_SC_HALTED, | |
681 | SEND_CTXT_ERR_STATUS_PIO_DISALLOWED_PACKET_ERR_SMASK), | |
682 | /* 2*/ FLAG_ENTRY("WriteCrossesBoundary", | |
683 | SEC_WRITE_DROPPED | SEC_SC_HALTED, | |
684 | SEND_CTXT_ERR_STATUS_PIO_WRITE_CROSSES_BOUNDARY_ERR_SMASK), | |
685 | /* 3*/ FLAG_ENTRY("WriteOverflow", | |
686 | SEC_WRITE_DROPPED | SEC_SC_HALTED, | |
687 | SEND_CTXT_ERR_STATUS_PIO_WRITE_OVERFLOW_ERR_SMASK), | |
688 | /* 4*/ FLAG_ENTRY("WriteOutOfBounds", | |
689 | SEC_WRITE_DROPPED | SEC_SC_HALTED, | |
690 | SEND_CTXT_ERR_STATUS_PIO_WRITE_OUT_OF_BOUNDS_ERR_SMASK), | |
691 | /* 5-63 reserved*/ | |
692 | }; | |
693 | ||
694 | /* | |
695 | * RXE Receive Error flags | |
696 | */ | |
697 | #define RXES(name) RCV_ERR_STATUS_RX_##name##_ERR_SMASK | |
698 | static struct flag_table rxe_err_status_flags[] = { | |
699 | /* 0*/ FLAG_ENTRY0("RxDmaCsrCorErr", RXES(DMA_CSR_COR)), | |
700 | /* 1*/ FLAG_ENTRY0("RxDcIntfParityErr", RXES(DC_INTF_PARITY)), | |
701 | /* 2*/ FLAG_ENTRY0("RxRcvHdrUncErr", RXES(RCV_HDR_UNC)), | |
702 | /* 3*/ FLAG_ENTRY0("RxRcvHdrCorErr", RXES(RCV_HDR_COR)), | |
703 | /* 4*/ FLAG_ENTRY0("RxRcvDataUncErr", RXES(RCV_DATA_UNC)), | |
704 | /* 5*/ FLAG_ENTRY0("RxRcvDataCorErr", RXES(RCV_DATA_COR)), | |
705 | /* 6*/ FLAG_ENTRY0("RxRcvQpMapTableUncErr", RXES(RCV_QP_MAP_TABLE_UNC)), | |
706 | /* 7*/ FLAG_ENTRY0("RxRcvQpMapTableCorErr", RXES(RCV_QP_MAP_TABLE_COR)), | |
707 | /* 8*/ FLAG_ENTRY0("RxRcvCsrParityErr", RXES(RCV_CSR_PARITY)), | |
708 | /* 9*/ FLAG_ENTRY0("RxDcSopEopParityErr", RXES(DC_SOP_EOP_PARITY)), | |
709 | /*10*/ FLAG_ENTRY0("RxDmaFlagUncErr", RXES(DMA_FLAG_UNC)), | |
710 | /*11*/ FLAG_ENTRY0("RxDmaFlagCorErr", RXES(DMA_FLAG_COR)), | |
711 | /*12*/ FLAG_ENTRY0("RxRcvFsmEncodingErr", RXES(RCV_FSM_ENCODING)), | |
712 | /*13*/ FLAG_ENTRY0("RxRbufFreeListUncErr", RXES(RBUF_FREE_LIST_UNC)), | |
713 | /*14*/ FLAG_ENTRY0("RxRbufFreeListCorErr", RXES(RBUF_FREE_LIST_COR)), | |
714 | /*15*/ FLAG_ENTRY0("RxRbufLookupDesRegUncErr", RXES(RBUF_LOOKUP_DES_REG_UNC)), | |
715 | /*16*/ FLAG_ENTRY0("RxRbufLookupDesRegUncCorErr", | |
716 | RXES(RBUF_LOOKUP_DES_REG_UNC_COR)), | |
717 | /*17*/ FLAG_ENTRY0("RxRbufLookupDesUncErr", RXES(RBUF_LOOKUP_DES_UNC)), | |
718 | /*18*/ FLAG_ENTRY0("RxRbufLookupDesCorErr", RXES(RBUF_LOOKUP_DES_COR)), | |
719 | /*19*/ FLAG_ENTRY0("RxRbufBlockListReadUncErr", | |
720 | RXES(RBUF_BLOCK_LIST_READ_UNC)), | |
721 | /*20*/ FLAG_ENTRY0("RxRbufBlockListReadCorErr", | |
722 | RXES(RBUF_BLOCK_LIST_READ_COR)), | |
723 | /*21*/ FLAG_ENTRY0("RxRbufCsrQHeadBufNumParityErr", | |
724 | RXES(RBUF_CSR_QHEAD_BUF_NUM_PARITY)), | |
725 | /*22*/ FLAG_ENTRY0("RxRbufCsrQEntCntParityErr", | |
726 | RXES(RBUF_CSR_QENT_CNT_PARITY)), | |
727 | /*23*/ FLAG_ENTRY0("RxRbufCsrQNextBufParityErr", | |
728 | RXES(RBUF_CSR_QNEXT_BUF_PARITY)), | |
729 | /*24*/ FLAG_ENTRY0("RxRbufCsrQVldBitParityErr", | |
730 | RXES(RBUF_CSR_QVLD_BIT_PARITY)), | |
731 | /*25*/ FLAG_ENTRY0("RxRbufCsrQHdPtrParityErr", RXES(RBUF_CSR_QHD_PTR_PARITY)), | |
732 | /*26*/ FLAG_ENTRY0("RxRbufCsrQTlPtrParityErr", RXES(RBUF_CSR_QTL_PTR_PARITY)), | |
733 | /*27*/ FLAG_ENTRY0("RxRbufCsrQNumOfPktParityErr", | |
734 | RXES(RBUF_CSR_QNUM_OF_PKT_PARITY)), | |
735 | /*28*/ FLAG_ENTRY0("RxRbufCsrQEOPDWParityErr", RXES(RBUF_CSR_QEOPDW_PARITY)), | |
736 | /*29*/ FLAG_ENTRY0("RxRbufCtxIdParityErr", RXES(RBUF_CTX_ID_PARITY)), | |
737 | /*30*/ FLAG_ENTRY0("RxRBufBadLookupErr", RXES(RBUF_BAD_LOOKUP)), | |
738 | /*31*/ FLAG_ENTRY0("RxRbufFullErr", RXES(RBUF_FULL)), | |
739 | /*32*/ FLAG_ENTRY0("RxRbufEmptyErr", RXES(RBUF_EMPTY)), | |
740 | /*33*/ FLAG_ENTRY0("RxRbufFlRdAddrParityErr", RXES(RBUF_FL_RD_ADDR_PARITY)), | |
741 | /*34*/ FLAG_ENTRY0("RxRbufFlWrAddrParityErr", RXES(RBUF_FL_WR_ADDR_PARITY)), | |
742 | /*35*/ FLAG_ENTRY0("RxRbufFlInitdoneParityErr", | |
743 | RXES(RBUF_FL_INITDONE_PARITY)), | |
744 | /*36*/ FLAG_ENTRY0("RxRbufFlInitWrAddrParityErr", | |
745 | RXES(RBUF_FL_INIT_WR_ADDR_PARITY)), | |
746 | /*37*/ FLAG_ENTRY0("RxRbufNextFreeBufUncErr", RXES(RBUF_NEXT_FREE_BUF_UNC)), | |
747 | /*38*/ FLAG_ENTRY0("RxRbufNextFreeBufCorErr", RXES(RBUF_NEXT_FREE_BUF_COR)), | |
748 | /*39*/ FLAG_ENTRY0("RxLookupDesPart1UncErr", RXES(LOOKUP_DES_PART1_UNC)), | |
749 | /*40*/ FLAG_ENTRY0("RxLookupDesPart1UncCorErr", | |
750 | RXES(LOOKUP_DES_PART1_UNC_COR)), | |
751 | /*41*/ FLAG_ENTRY0("RxLookupDesPart2ParityErr", | |
752 | RXES(LOOKUP_DES_PART2_PARITY)), | |
753 | /*42*/ FLAG_ENTRY0("RxLookupRcvArrayUncErr", RXES(LOOKUP_RCV_ARRAY_UNC)), | |
754 | /*43*/ FLAG_ENTRY0("RxLookupRcvArrayCorErr", RXES(LOOKUP_RCV_ARRAY_COR)), | |
755 | /*44*/ FLAG_ENTRY0("RxLookupCsrParityErr", RXES(LOOKUP_CSR_PARITY)), | |
756 | /*45*/ FLAG_ENTRY0("RxHqIntrCsrParityErr", RXES(HQ_INTR_CSR_PARITY)), | |
757 | /*46*/ FLAG_ENTRY0("RxHqIntrFsmErr", RXES(HQ_INTR_FSM)), | |
758 | /*47*/ FLAG_ENTRY0("RxRbufDescPart1UncErr", RXES(RBUF_DESC_PART1_UNC)), | |
759 | /*48*/ FLAG_ENTRY0("RxRbufDescPart1CorErr", RXES(RBUF_DESC_PART1_COR)), | |
760 | /*49*/ FLAG_ENTRY0("RxRbufDescPart2UncErr", RXES(RBUF_DESC_PART2_UNC)), | |
761 | /*50*/ FLAG_ENTRY0("RxRbufDescPart2CorErr", RXES(RBUF_DESC_PART2_COR)), | |
762 | /*51*/ FLAG_ENTRY0("RxDmaHdrFifoRdUncErr", RXES(DMA_HDR_FIFO_RD_UNC)), | |
763 | /*52*/ FLAG_ENTRY0("RxDmaHdrFifoRdCorErr", RXES(DMA_HDR_FIFO_RD_COR)), | |
764 | /*53*/ FLAG_ENTRY0("RxDmaDataFifoRdUncErr", RXES(DMA_DATA_FIFO_RD_UNC)), | |
765 | /*54*/ FLAG_ENTRY0("RxDmaDataFifoRdCorErr", RXES(DMA_DATA_FIFO_RD_COR)), | |
766 | /*55*/ FLAG_ENTRY0("RxRbufDataUncErr", RXES(RBUF_DATA_UNC)), | |
767 | /*56*/ FLAG_ENTRY0("RxRbufDataCorErr", RXES(RBUF_DATA_COR)), | |
768 | /*57*/ FLAG_ENTRY0("RxDmaCsrParityErr", RXES(DMA_CSR_PARITY)), | |
769 | /*58*/ FLAG_ENTRY0("RxDmaEqFsmEncodingErr", RXES(DMA_EQ_FSM_ENCODING)), | |
770 | /*59*/ FLAG_ENTRY0("RxDmaDqFsmEncodingErr", RXES(DMA_DQ_FSM_ENCODING)), | |
771 | /*60*/ FLAG_ENTRY0("RxDmaCsrUncErr", RXES(DMA_CSR_UNC)), | |
772 | /*61*/ FLAG_ENTRY0("RxCsrReadBadAddrErr", RXES(CSR_READ_BAD_ADDR)), | |
773 | /*62*/ FLAG_ENTRY0("RxCsrWriteBadAddrErr", RXES(CSR_WRITE_BAD_ADDR)), | |
774 | /*63*/ FLAG_ENTRY0("RxCsrParityErr", RXES(CSR_PARITY)) | |
775 | }; | |
776 | ||
777 | /* RXE errors that will trigger an SPC freeze */ | |
778 | #define ALL_RXE_FREEZE_ERR \ | |
779 | (RCV_ERR_STATUS_RX_RCV_QP_MAP_TABLE_UNC_ERR_SMASK \ | |
780 | | RCV_ERR_STATUS_RX_RCV_CSR_PARITY_ERR_SMASK \ | |
781 | | RCV_ERR_STATUS_RX_DMA_FLAG_UNC_ERR_SMASK \ | |
782 | | RCV_ERR_STATUS_RX_RCV_FSM_ENCODING_ERR_SMASK \ | |
783 | | RCV_ERR_STATUS_RX_RBUF_FREE_LIST_UNC_ERR_SMASK \ | |
784 | | RCV_ERR_STATUS_RX_RBUF_LOOKUP_DES_REG_UNC_ERR_SMASK \ | |
785 | | RCV_ERR_STATUS_RX_RBUF_LOOKUP_DES_REG_UNC_COR_ERR_SMASK \ | |
786 | | RCV_ERR_STATUS_RX_RBUF_LOOKUP_DES_UNC_ERR_SMASK \ | |
787 | | RCV_ERR_STATUS_RX_RBUF_BLOCK_LIST_READ_UNC_ERR_SMASK \ | |
788 | | RCV_ERR_STATUS_RX_RBUF_CSR_QHEAD_BUF_NUM_PARITY_ERR_SMASK \ | |
789 | | RCV_ERR_STATUS_RX_RBUF_CSR_QENT_CNT_PARITY_ERR_SMASK \ | |
790 | | RCV_ERR_STATUS_RX_RBUF_CSR_QNEXT_BUF_PARITY_ERR_SMASK \ | |
791 | | RCV_ERR_STATUS_RX_RBUF_CSR_QVLD_BIT_PARITY_ERR_SMASK \ | |
792 | | RCV_ERR_STATUS_RX_RBUF_CSR_QHD_PTR_PARITY_ERR_SMASK \ | |
793 | | RCV_ERR_STATUS_RX_RBUF_CSR_QTL_PTR_PARITY_ERR_SMASK \ | |
794 | | RCV_ERR_STATUS_RX_RBUF_CSR_QNUM_OF_PKT_PARITY_ERR_SMASK \ | |
795 | | RCV_ERR_STATUS_RX_RBUF_CSR_QEOPDW_PARITY_ERR_SMASK \ | |
796 | | RCV_ERR_STATUS_RX_RBUF_CTX_ID_PARITY_ERR_SMASK \ | |
797 | | RCV_ERR_STATUS_RX_RBUF_BAD_LOOKUP_ERR_SMASK \ | |
798 | | RCV_ERR_STATUS_RX_RBUF_FULL_ERR_SMASK \ | |
799 | | RCV_ERR_STATUS_RX_RBUF_EMPTY_ERR_SMASK \ | |
800 | | RCV_ERR_STATUS_RX_RBUF_FL_RD_ADDR_PARITY_ERR_SMASK \ | |
801 | | RCV_ERR_STATUS_RX_RBUF_FL_WR_ADDR_PARITY_ERR_SMASK \ | |
802 | | RCV_ERR_STATUS_RX_RBUF_FL_INITDONE_PARITY_ERR_SMASK \ | |
803 | | RCV_ERR_STATUS_RX_RBUF_FL_INIT_WR_ADDR_PARITY_ERR_SMASK \ | |
804 | | RCV_ERR_STATUS_RX_RBUF_NEXT_FREE_BUF_UNC_ERR_SMASK \ | |
805 | | RCV_ERR_STATUS_RX_LOOKUP_DES_PART1_UNC_ERR_SMASK \ | |
806 | | RCV_ERR_STATUS_RX_LOOKUP_DES_PART1_UNC_COR_ERR_SMASK \ | |
807 | | RCV_ERR_STATUS_RX_LOOKUP_DES_PART2_PARITY_ERR_SMASK \ | |
808 | | RCV_ERR_STATUS_RX_LOOKUP_RCV_ARRAY_UNC_ERR_SMASK \ | |
809 | | RCV_ERR_STATUS_RX_LOOKUP_CSR_PARITY_ERR_SMASK \ | |
810 | | RCV_ERR_STATUS_RX_HQ_INTR_CSR_PARITY_ERR_SMASK \ | |
811 | | RCV_ERR_STATUS_RX_HQ_INTR_FSM_ERR_SMASK \ | |
812 | | RCV_ERR_STATUS_RX_RBUF_DESC_PART1_UNC_ERR_SMASK \ | |
813 | | RCV_ERR_STATUS_RX_RBUF_DESC_PART1_COR_ERR_SMASK \ | |
814 | | RCV_ERR_STATUS_RX_RBUF_DESC_PART2_UNC_ERR_SMASK \ | |
815 | | RCV_ERR_STATUS_RX_DMA_HDR_FIFO_RD_UNC_ERR_SMASK \ | |
816 | | RCV_ERR_STATUS_RX_DMA_DATA_FIFO_RD_UNC_ERR_SMASK \ | |
817 | | RCV_ERR_STATUS_RX_RBUF_DATA_UNC_ERR_SMASK \ | |
818 | | RCV_ERR_STATUS_RX_DMA_CSR_PARITY_ERR_SMASK \ | |
819 | | RCV_ERR_STATUS_RX_DMA_EQ_FSM_ENCODING_ERR_SMASK \ | |
820 | | RCV_ERR_STATUS_RX_DMA_DQ_FSM_ENCODING_ERR_SMASK \ | |
821 | | RCV_ERR_STATUS_RX_DMA_CSR_UNC_ERR_SMASK \ | |
822 | | RCV_ERR_STATUS_RX_CSR_PARITY_ERR_SMASK) | |
823 | ||
824 | #define RXE_FREEZE_ABORT_MASK \ | |
825 | (RCV_ERR_STATUS_RX_DMA_CSR_UNC_ERR_SMASK | \ | |
826 | RCV_ERR_STATUS_RX_DMA_HDR_FIFO_RD_UNC_ERR_SMASK | \ | |
827 | RCV_ERR_STATUS_RX_DMA_DATA_FIFO_RD_UNC_ERR_SMASK) | |
828 | ||
829 | /* | |
830 | * DCC Error Flags | |
831 | */ | |
832 | #define DCCE(name) DCC_ERR_FLG_##name##_SMASK | |
833 | static struct flag_table dcc_err_flags[] = { | |
834 | FLAG_ENTRY0("bad_l2_err", DCCE(BAD_L2_ERR)), | |
835 | FLAG_ENTRY0("bad_sc_err", DCCE(BAD_SC_ERR)), | |
836 | FLAG_ENTRY0("bad_mid_tail_err", DCCE(BAD_MID_TAIL_ERR)), | |
837 | FLAG_ENTRY0("bad_preemption_err", DCCE(BAD_PREEMPTION_ERR)), | |
838 | FLAG_ENTRY0("preemption_err", DCCE(PREEMPTION_ERR)), | |
839 | FLAG_ENTRY0("preemptionvl15_err", DCCE(PREEMPTIONVL15_ERR)), | |
840 | FLAG_ENTRY0("bad_vl_marker_err", DCCE(BAD_VL_MARKER_ERR)), | |
841 | FLAG_ENTRY0("bad_dlid_target_err", DCCE(BAD_DLID_TARGET_ERR)), | |
842 | FLAG_ENTRY0("bad_lver_err", DCCE(BAD_LVER_ERR)), | |
843 | FLAG_ENTRY0("uncorrectable_err", DCCE(UNCORRECTABLE_ERR)), | |
844 | FLAG_ENTRY0("bad_crdt_ack_err", DCCE(BAD_CRDT_ACK_ERR)), | |
845 | FLAG_ENTRY0("unsup_pkt_type", DCCE(UNSUP_PKT_TYPE)), | |
846 | FLAG_ENTRY0("bad_ctrl_flit_err", DCCE(BAD_CTRL_FLIT_ERR)), | |
847 | FLAG_ENTRY0("event_cntr_parity_err", DCCE(EVENT_CNTR_PARITY_ERR)), | |
848 | FLAG_ENTRY0("event_cntr_rollover_err", DCCE(EVENT_CNTR_ROLLOVER_ERR)), | |
849 | FLAG_ENTRY0("link_err", DCCE(LINK_ERR)), | |
850 | FLAG_ENTRY0("misc_cntr_rollover_err", DCCE(MISC_CNTR_ROLLOVER_ERR)), | |
851 | FLAG_ENTRY0("bad_ctrl_dist_err", DCCE(BAD_CTRL_DIST_ERR)), | |
852 | FLAG_ENTRY0("bad_tail_dist_err", DCCE(BAD_TAIL_DIST_ERR)), | |
853 | FLAG_ENTRY0("bad_head_dist_err", DCCE(BAD_HEAD_DIST_ERR)), | |
854 | FLAG_ENTRY0("nonvl15_state_err", DCCE(NONVL15_STATE_ERR)), | |
855 | FLAG_ENTRY0("vl15_multi_err", DCCE(VL15_MULTI_ERR)), | |
856 | FLAG_ENTRY0("bad_pkt_length_err", DCCE(BAD_PKT_LENGTH_ERR)), | |
857 | FLAG_ENTRY0("unsup_vl_err", DCCE(UNSUP_VL_ERR)), | |
858 | FLAG_ENTRY0("perm_nvl15_err", DCCE(PERM_NVL15_ERR)), | |
859 | FLAG_ENTRY0("slid_zero_err", DCCE(SLID_ZERO_ERR)), | |
860 | FLAG_ENTRY0("dlid_zero_err", DCCE(DLID_ZERO_ERR)), | |
861 | FLAG_ENTRY0("length_mtu_err", DCCE(LENGTH_MTU_ERR)), | |
862 | FLAG_ENTRY0("rx_early_drop_err", DCCE(RX_EARLY_DROP_ERR)), | |
863 | FLAG_ENTRY0("late_short_err", DCCE(LATE_SHORT_ERR)), | |
864 | FLAG_ENTRY0("late_long_err", DCCE(LATE_LONG_ERR)), | |
865 | FLAG_ENTRY0("late_ebp_err", DCCE(LATE_EBP_ERR)), | |
866 | FLAG_ENTRY0("fpe_tx_fifo_ovflw_err", DCCE(FPE_TX_FIFO_OVFLW_ERR)), | |
867 | FLAG_ENTRY0("fpe_tx_fifo_unflw_err", DCCE(FPE_TX_FIFO_UNFLW_ERR)), | |
868 | FLAG_ENTRY0("csr_access_blocked_host", DCCE(CSR_ACCESS_BLOCKED_HOST)), | |
869 | FLAG_ENTRY0("csr_access_blocked_uc", DCCE(CSR_ACCESS_BLOCKED_UC)), | |
870 | FLAG_ENTRY0("tx_ctrl_parity_err", DCCE(TX_CTRL_PARITY_ERR)), | |
871 | FLAG_ENTRY0("tx_ctrl_parity_mbe_err", DCCE(TX_CTRL_PARITY_MBE_ERR)), | |
872 | FLAG_ENTRY0("tx_sc_parity_err", DCCE(TX_SC_PARITY_ERR)), | |
873 | FLAG_ENTRY0("rx_ctrl_parity_mbe_err", DCCE(RX_CTRL_PARITY_MBE_ERR)), | |
874 | FLAG_ENTRY0("csr_parity_err", DCCE(CSR_PARITY_ERR)), | |
875 | FLAG_ENTRY0("csr_inval_addr", DCCE(CSR_INVAL_ADDR)), | |
876 | FLAG_ENTRY0("tx_byte_shft_parity_err", DCCE(TX_BYTE_SHFT_PARITY_ERR)), | |
877 | FLAG_ENTRY0("rx_byte_shft_parity_err", DCCE(RX_BYTE_SHFT_PARITY_ERR)), | |
878 | FLAG_ENTRY0("fmconfig_err", DCCE(FMCONFIG_ERR)), | |
879 | FLAG_ENTRY0("rcvport_err", DCCE(RCVPORT_ERR)), | |
880 | }; | |
881 | ||
882 | /* | |
883 | * LCB error flags | |
884 | */ | |
885 | #define LCBE(name) DC_LCB_ERR_FLG_##name##_SMASK | |
886 | static struct flag_table lcb_err_flags[] = { | |
887 | /* 0*/ FLAG_ENTRY0("CSR_PARITY_ERR", LCBE(CSR_PARITY_ERR)), | |
888 | /* 1*/ FLAG_ENTRY0("INVALID_CSR_ADDR", LCBE(INVALID_CSR_ADDR)), | |
889 | /* 2*/ FLAG_ENTRY0("RST_FOR_FAILED_DESKEW", LCBE(RST_FOR_FAILED_DESKEW)), | |
890 | /* 3*/ FLAG_ENTRY0("ALL_LNS_FAILED_REINIT_TEST", | |
891 | LCBE(ALL_LNS_FAILED_REINIT_TEST)), | |
892 | /* 4*/ FLAG_ENTRY0("LOST_REINIT_STALL_OR_TOS", LCBE(LOST_REINIT_STALL_OR_TOS)), | |
893 | /* 5*/ FLAG_ENTRY0("TX_LESS_THAN_FOUR_LNS", LCBE(TX_LESS_THAN_FOUR_LNS)), | |
894 | /* 6*/ FLAG_ENTRY0("RX_LESS_THAN_FOUR_LNS", LCBE(RX_LESS_THAN_FOUR_LNS)), | |
895 | /* 7*/ FLAG_ENTRY0("SEQ_CRC_ERR", LCBE(SEQ_CRC_ERR)), | |
896 | /* 8*/ FLAG_ENTRY0("REINIT_FROM_PEER", LCBE(REINIT_FROM_PEER)), | |
897 | /* 9*/ FLAG_ENTRY0("REINIT_FOR_LN_DEGRADE", LCBE(REINIT_FOR_LN_DEGRADE)), | |
898 | /*10*/ FLAG_ENTRY0("CRC_ERR_CNT_HIT_LIMIT", LCBE(CRC_ERR_CNT_HIT_LIMIT)), | |
899 | /*11*/ FLAG_ENTRY0("RCLK_STOPPED", LCBE(RCLK_STOPPED)), | |
900 | /*12*/ FLAG_ENTRY0("UNEXPECTED_REPLAY_MARKER", LCBE(UNEXPECTED_REPLAY_MARKER)), | |
901 | /*13*/ FLAG_ENTRY0("UNEXPECTED_ROUND_TRIP_MARKER", | |
902 | LCBE(UNEXPECTED_ROUND_TRIP_MARKER)), | |
903 | /*14*/ FLAG_ENTRY0("ILLEGAL_NULL_LTP", LCBE(ILLEGAL_NULL_LTP)), | |
904 | /*15*/ FLAG_ENTRY0("ILLEGAL_FLIT_ENCODING", LCBE(ILLEGAL_FLIT_ENCODING)), | |
905 | /*16*/ FLAG_ENTRY0("FLIT_INPUT_BUF_OFLW", LCBE(FLIT_INPUT_BUF_OFLW)), | |
906 | /*17*/ FLAG_ENTRY0("VL_ACK_INPUT_BUF_OFLW", LCBE(VL_ACK_INPUT_BUF_OFLW)), | |
907 | /*18*/ FLAG_ENTRY0("VL_ACK_INPUT_PARITY_ERR", LCBE(VL_ACK_INPUT_PARITY_ERR)), | |
908 | /*19*/ FLAG_ENTRY0("VL_ACK_INPUT_WRONG_CRC_MODE", | |
909 | LCBE(VL_ACK_INPUT_WRONG_CRC_MODE)), | |
910 | /*20*/ FLAG_ENTRY0("FLIT_INPUT_BUF_MBE", LCBE(FLIT_INPUT_BUF_MBE)), | |
911 | /*21*/ FLAG_ENTRY0("FLIT_INPUT_BUF_SBE", LCBE(FLIT_INPUT_BUF_SBE)), | |
912 | /*22*/ FLAG_ENTRY0("REPLAY_BUF_MBE", LCBE(REPLAY_BUF_MBE)), | |
913 | /*23*/ FLAG_ENTRY0("REPLAY_BUF_SBE", LCBE(REPLAY_BUF_SBE)), | |
914 | /*24*/ FLAG_ENTRY0("CREDIT_RETURN_FLIT_MBE", LCBE(CREDIT_RETURN_FLIT_MBE)), | |
915 | /*25*/ FLAG_ENTRY0("RST_FOR_LINK_TIMEOUT", LCBE(RST_FOR_LINK_TIMEOUT)), | |
916 | /*26*/ FLAG_ENTRY0("RST_FOR_INCOMPLT_RND_TRIP", | |
917 | LCBE(RST_FOR_INCOMPLT_RND_TRIP)), | |
918 | /*27*/ FLAG_ENTRY0("HOLD_REINIT", LCBE(HOLD_REINIT)), | |
919 | /*28*/ FLAG_ENTRY0("NEG_EDGE_LINK_TRANSFER_ACTIVE", | |
920 | LCBE(NEG_EDGE_LINK_TRANSFER_ACTIVE)), | |
921 | /*29*/ FLAG_ENTRY0("REDUNDANT_FLIT_PARITY_ERR", | |
922 | LCBE(REDUNDANT_FLIT_PARITY_ERR)) | |
923 | }; | |
924 | ||
925 | /* | |
926 | * DC8051 Error Flags | |
927 | */ | |
928 | #define D8E(name) DC_DC8051_ERR_FLG_##name##_SMASK | |
929 | static struct flag_table dc8051_err_flags[] = { | |
930 | FLAG_ENTRY0("SET_BY_8051", D8E(SET_BY_8051)), | |
931 | FLAG_ENTRY0("LOST_8051_HEART_BEAT", D8E(LOST_8051_HEART_BEAT)), | |
932 | FLAG_ENTRY0("CRAM_MBE", D8E(CRAM_MBE)), | |
933 | FLAG_ENTRY0("CRAM_SBE", D8E(CRAM_SBE)), | |
934 | FLAG_ENTRY0("DRAM_MBE", D8E(DRAM_MBE)), | |
935 | FLAG_ENTRY0("DRAM_SBE", D8E(DRAM_SBE)), | |
936 | FLAG_ENTRY0("IRAM_MBE", D8E(IRAM_MBE)), | |
937 | FLAG_ENTRY0("IRAM_SBE", D8E(IRAM_SBE)), | |
938 | FLAG_ENTRY0("UNMATCHED_SECURE_MSG_ACROSS_BCC_LANES", | |
939 | D8E(UNMATCHED_SECURE_MSG_ACROSS_BCC_LANES)), | |
940 | FLAG_ENTRY0("INVALID_CSR_ADDR", D8E(INVALID_CSR_ADDR)), | |
941 | }; | |
942 | ||
943 | /* | |
944 | * DC8051 Information Error flags | |
945 | * | |
946 | * Flags in DC8051_DBG_ERR_INFO_SET_BY_8051.ERROR field. | |
947 | */ | |
948 | static struct flag_table dc8051_info_err_flags[] = { | |
949 | FLAG_ENTRY0("Spico ROM check failed", SPICO_ROM_FAILED), | |
950 | FLAG_ENTRY0("Unknown frame received", UNKNOWN_FRAME), | |
951 | FLAG_ENTRY0("Target BER not met", TARGET_BER_NOT_MET), | |
952 | FLAG_ENTRY0("Serdes internal loopback failure", | |
953 | FAILED_SERDES_INTERNAL_LOOPBACK), | |
954 | FLAG_ENTRY0("Failed SerDes init", FAILED_SERDES_INIT), | |
955 | FLAG_ENTRY0("Failed LNI(Polling)", FAILED_LNI_POLLING), | |
956 | FLAG_ENTRY0("Failed LNI(Debounce)", FAILED_LNI_DEBOUNCE), | |
957 | FLAG_ENTRY0("Failed LNI(EstbComm)", FAILED_LNI_ESTBCOMM), | |
958 | FLAG_ENTRY0("Failed LNI(OptEq)", FAILED_LNI_OPTEQ), | |
959 | FLAG_ENTRY0("Failed LNI(VerifyCap_1)", FAILED_LNI_VERIFY_CAP1), | |
960 | FLAG_ENTRY0("Failed LNI(VerifyCap_2)", FAILED_LNI_VERIFY_CAP2), | |
961 | FLAG_ENTRY0("Failed LNI(ConfigLT)", FAILED_LNI_CONFIGLT) | |
962 | }; | |
963 | ||
964 | /* | |
965 | * DC8051 Information Host Information flags | |
966 | * | |
967 | * Flags in DC8051_DBG_ERR_INFO_SET_BY_8051.HOST_MSG field. | |
968 | */ | |
969 | static struct flag_table dc8051_info_host_msg_flags[] = { | |
970 | FLAG_ENTRY0("Host request done", 0x0001), | |
971 | FLAG_ENTRY0("BC SMA message", 0x0002), | |
972 | FLAG_ENTRY0("BC PWR_MGM message", 0x0004), | |
973 | FLAG_ENTRY0("BC Unknown message (BCC)", 0x0008), | |
974 | FLAG_ENTRY0("BC Unknown message (LCB)", 0x0010), | |
975 | FLAG_ENTRY0("External device config request", 0x0020), | |
976 | FLAG_ENTRY0("VerifyCap all frames received", 0x0040), | |
977 | FLAG_ENTRY0("LinkUp achieved", 0x0080), | |
978 | FLAG_ENTRY0("Link going down", 0x0100), | |
979 | }; | |
980 | ||
981 | ||
982 | static u32 encoded_size(u32 size); | |
983 | static u32 chip_to_opa_lstate(struct hfi1_devdata *dd, u32 chip_lstate); | |
984 | static int set_physical_link_state(struct hfi1_devdata *dd, u64 state); | |
985 | static void read_vc_remote_phy(struct hfi1_devdata *dd, u8 *power_management, | |
986 | u8 *continuous); | |
987 | static void read_vc_remote_fabric(struct hfi1_devdata *dd, u8 *vau, u8 *z, | |
988 | u8 *vcu, u16 *vl15buf, u8 *crc_sizes); | |
989 | static void read_vc_remote_link_width(struct hfi1_devdata *dd, | |
990 | u8 *remote_tx_rate, u16 *link_widths); | |
991 | static void read_vc_local_link_width(struct hfi1_devdata *dd, u8 *misc_bits, | |
992 | u8 *flag_bits, u16 *link_widths); | |
993 | static void read_remote_device_id(struct hfi1_devdata *dd, u16 *device_id, | |
994 | u8 *device_rev); | |
995 | static void read_mgmt_allowed(struct hfi1_devdata *dd, u8 *mgmt_allowed); | |
996 | static void read_local_lni(struct hfi1_devdata *dd, u8 *enable_lane_rx); | |
997 | static int read_tx_settings(struct hfi1_devdata *dd, u8 *enable_lane_tx, | |
998 | u8 *tx_polarity_inversion, | |
999 | u8 *rx_polarity_inversion, u8 *max_rate); | |
1000 | static void handle_sdma_eng_err(struct hfi1_devdata *dd, | |
1001 | unsigned int context, u64 err_status); | |
1002 | static void handle_qsfp_int(struct hfi1_devdata *dd, u32 source, u64 reg); | |
1003 | static void handle_dcc_err(struct hfi1_devdata *dd, | |
1004 | unsigned int context, u64 err_status); | |
1005 | static void handle_lcb_err(struct hfi1_devdata *dd, | |
1006 | unsigned int context, u64 err_status); | |
1007 | static void handle_8051_interrupt(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1008 | static void handle_cce_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1009 | static void handle_rxe_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1010 | static void handle_misc_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1011 | static void handle_pio_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1012 | static void handle_sdma_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1013 | static void handle_egress_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1014 | static void handle_txe_err(struct hfi1_devdata *dd, u32 unused, u64 reg); | |
1015 | static void set_partition_keys(struct hfi1_pportdata *); | |
1016 | static const char *link_state_name(u32 state); | |
1017 | static const char *link_state_reason_name(struct hfi1_pportdata *ppd, | |
1018 | u32 state); | |
1019 | static int do_8051_command(struct hfi1_devdata *dd, u32 type, u64 in_data, | |
1020 | u64 *out_data); | |
1021 | static int read_idle_sma(struct hfi1_devdata *dd, u64 *data); | |
1022 | static int thermal_init(struct hfi1_devdata *dd); | |
1023 | ||
1024 | static int wait_logical_linkstate(struct hfi1_pportdata *ppd, u32 state, | |
1025 | int msecs); | |
1026 | static void read_planned_down_reason_code(struct hfi1_devdata *dd, u8 *pdrrc); | |
1027 | static void handle_temp_err(struct hfi1_devdata *); | |
1028 | static void dc_shutdown(struct hfi1_devdata *); | |
1029 | static void dc_start(struct hfi1_devdata *); | |
1030 | ||
1031 | /* | |
1032 | * Error interrupt table entry. This is used as input to the interrupt | |
1033 | * "clear down" routine used for all second tier error interrupt register. | |
1034 | * Second tier interrupt registers have a single bit representing them | |
1035 | * in the top-level CceIntStatus. | |
1036 | */ | |
1037 | struct err_reg_info { | |
1038 | u32 status; /* status CSR offset */ | |
1039 | u32 clear; /* clear CSR offset */ | |
1040 | u32 mask; /* mask CSR offset */ | |
1041 | void (*handler)(struct hfi1_devdata *dd, u32 source, u64 reg); | |
1042 | const char *desc; | |
1043 | }; | |
1044 | ||
1045 | #define NUM_MISC_ERRS (IS_GENERAL_ERR_END - IS_GENERAL_ERR_START) | |
1046 | #define NUM_DC_ERRS (IS_DC_END - IS_DC_START) | |
1047 | #define NUM_VARIOUS (IS_VARIOUS_END - IS_VARIOUS_START) | |
1048 | ||
1049 | /* | |
1050 | * Helpers for building HFI and DC error interrupt table entries. Different | |
1051 | * helpers are needed because of inconsistent register names. | |
1052 | */ | |
1053 | #define EE(reg, handler, desc) \ | |
1054 | { reg##_STATUS, reg##_CLEAR, reg##_MASK, \ | |
1055 | handler, desc } | |
1056 | #define DC_EE1(reg, handler, desc) \ | |
1057 | { reg##_FLG, reg##_FLG_CLR, reg##_FLG_EN, handler, desc } | |
1058 | #define DC_EE2(reg, handler, desc) \ | |
1059 | { reg##_FLG, reg##_CLR, reg##_EN, handler, desc } | |
1060 | ||
1061 | /* | |
1062 | * Table of the "misc" grouping of error interrupts. Each entry refers to | |
1063 | * another register containing more information. | |
1064 | */ | |
1065 | static const struct err_reg_info misc_errs[NUM_MISC_ERRS] = { | |
1066 | /* 0*/ EE(CCE_ERR, handle_cce_err, "CceErr"), | |
1067 | /* 1*/ EE(RCV_ERR, handle_rxe_err, "RxeErr"), | |
1068 | /* 2*/ EE(MISC_ERR, handle_misc_err, "MiscErr"), | |
1069 | /* 3*/ { 0, 0, 0, NULL }, /* reserved */ | |
1070 | /* 4*/ EE(SEND_PIO_ERR, handle_pio_err, "PioErr"), | |
1071 | /* 5*/ EE(SEND_DMA_ERR, handle_sdma_err, "SDmaErr"), | |
1072 | /* 6*/ EE(SEND_EGRESS_ERR, handle_egress_err, "EgressErr"), | |
1073 | /* 7*/ EE(SEND_ERR, handle_txe_err, "TxeErr") | |
1074 | /* the rest are reserved */ | |
1075 | }; | |
1076 | ||
1077 | /* | |
1078 | * Index into the Various section of the interrupt sources | |
1079 | * corresponding to the Critical Temperature interrupt. | |
1080 | */ | |
1081 | #define TCRIT_INT_SOURCE 4 | |
1082 | ||
1083 | /* | |
1084 | * SDMA error interrupt entry - refers to another register containing more | |
1085 | * information. | |
1086 | */ | |
1087 | static const struct err_reg_info sdma_eng_err = | |
1088 | EE(SEND_DMA_ENG_ERR, handle_sdma_eng_err, "SDmaEngErr"); | |
1089 | ||
1090 | static const struct err_reg_info various_err[NUM_VARIOUS] = { | |
1091 | /* 0*/ { 0, 0, 0, NULL }, /* PbcInt */ | |
1092 | /* 1*/ { 0, 0, 0, NULL }, /* GpioAssertInt */ | |
1093 | /* 2*/ EE(ASIC_QSFP1, handle_qsfp_int, "QSFP1"), | |
1094 | /* 3*/ EE(ASIC_QSFP2, handle_qsfp_int, "QSFP2"), | |
1095 | /* 4*/ { 0, 0, 0, NULL }, /* TCritInt */ | |
1096 | /* rest are reserved */ | |
1097 | }; | |
1098 | ||
1099 | /* | |
1100 | * The DC encoding of mtu_cap for 10K MTU in the DCC_CFG_PORT_CONFIG | |
1101 | * register can not be derived from the MTU value because 10K is not | |
1102 | * a power of 2. Therefore, we need a constant. Everything else can | |
1103 | * be calculated. | |
1104 | */ | |
1105 | #define DCC_CFG_PORT_MTU_CAP_10240 7 | |
1106 | ||
1107 | /* | |
1108 | * Table of the DC grouping of error interrupts. Each entry refers to | |
1109 | * another register containing more information. | |
1110 | */ | |
1111 | static const struct err_reg_info dc_errs[NUM_DC_ERRS] = { | |
1112 | /* 0*/ DC_EE1(DCC_ERR, handle_dcc_err, "DCC Err"), | |
1113 | /* 1*/ DC_EE2(DC_LCB_ERR, handle_lcb_err, "LCB Err"), | |
1114 | /* 2*/ DC_EE2(DC_DC8051_ERR, handle_8051_interrupt, "DC8051 Interrupt"), | |
1115 | /* 3*/ /* dc_lbm_int - special, see is_dc_int() */ | |
1116 | /* the rest are reserved */ | |
1117 | }; | |
1118 | ||
1119 | struct cntr_entry { | |
1120 | /* | |
1121 | * counter name | |
1122 | */ | |
1123 | char *name; | |
1124 | ||
1125 | /* | |
1126 | * csr to read for name (if applicable) | |
1127 | */ | |
1128 | u64 csr; | |
1129 | ||
1130 | /* | |
1131 | * offset into dd or ppd to store the counter's value | |
1132 | */ | |
1133 | int offset; | |
1134 | ||
1135 | /* | |
1136 | * flags | |
1137 | */ | |
1138 | u8 flags; | |
1139 | ||
1140 | /* | |
1141 | * accessor for stat element, context either dd or ppd | |
1142 | */ | |
1143 | u64 (*rw_cntr)(const struct cntr_entry *, | |
1144 | void *context, | |
1145 | int vl, | |
1146 | int mode, | |
1147 | u64 data); | |
1148 | }; | |
1149 | ||
1150 | #define C_RCV_HDR_OVF_FIRST C_RCV_HDR_OVF_0 | |
1151 | #define C_RCV_HDR_OVF_LAST C_RCV_HDR_OVF_159 | |
1152 | ||
1153 | #define CNTR_ELEM(name, csr, offset, flags, accessor) \ | |
1154 | { \ | |
1155 | name, \ | |
1156 | csr, \ | |
1157 | offset, \ | |
1158 | flags, \ | |
1159 | accessor \ | |
1160 | } | |
1161 | ||
1162 | /* 32bit RXE */ | |
1163 | #define RXE32_PORT_CNTR_ELEM(name, counter, flags) \ | |
1164 | CNTR_ELEM(#name, \ | |
1165 | (counter * 8 + RCV_COUNTER_ARRAY32), \ | |
1166 | 0, flags | CNTR_32BIT, \ | |
1167 | port_access_u32_csr) | |
1168 | ||
1169 | #define RXE32_DEV_CNTR_ELEM(name, counter, flags) \ | |
1170 | CNTR_ELEM(#name, \ | |
1171 | (counter * 8 + RCV_COUNTER_ARRAY32), \ | |
1172 | 0, flags | CNTR_32BIT, \ | |
1173 | dev_access_u32_csr) | |
1174 | ||
1175 | /* 64bit RXE */ | |
1176 | #define RXE64_PORT_CNTR_ELEM(name, counter, flags) \ | |
1177 | CNTR_ELEM(#name, \ | |
1178 | (counter * 8 + RCV_COUNTER_ARRAY64), \ | |
1179 | 0, flags, \ | |
1180 | port_access_u64_csr) | |
1181 | ||
1182 | #define RXE64_DEV_CNTR_ELEM(name, counter, flags) \ | |
1183 | CNTR_ELEM(#name, \ | |
1184 | (counter * 8 + RCV_COUNTER_ARRAY64), \ | |
1185 | 0, flags, \ | |
1186 | dev_access_u64_csr) | |
1187 | ||
1188 | #define OVR_LBL(ctx) C_RCV_HDR_OVF_ ## ctx | |
1189 | #define OVR_ELM(ctx) \ | |
1190 | CNTR_ELEM("RcvHdrOvr" #ctx, \ | |
1191 | (RCV_HDR_OVFL_CNT + ctx*0x100), \ | |
1192 | 0, CNTR_NORMAL, port_access_u64_csr) | |
1193 | ||
1194 | /* 32bit TXE */ | |
1195 | #define TXE32_PORT_CNTR_ELEM(name, counter, flags) \ | |
1196 | CNTR_ELEM(#name, \ | |
1197 | (counter * 8 + SEND_COUNTER_ARRAY32), \ | |
1198 | 0, flags | CNTR_32BIT, \ | |
1199 | port_access_u32_csr) | |
1200 | ||
1201 | /* 64bit TXE */ | |
1202 | #define TXE64_PORT_CNTR_ELEM(name, counter, flags) \ | |
1203 | CNTR_ELEM(#name, \ | |
1204 | (counter * 8 + SEND_COUNTER_ARRAY64), \ | |
1205 | 0, flags, \ | |
1206 | port_access_u64_csr) | |
1207 | ||
1208 | # define TX64_DEV_CNTR_ELEM(name, counter, flags) \ | |
1209 | CNTR_ELEM(#name,\ | |
1210 | counter * 8 + SEND_COUNTER_ARRAY64, \ | |
1211 | 0, \ | |
1212 | flags, \ | |
1213 | dev_access_u64_csr) | |
1214 | ||
1215 | /* CCE */ | |
1216 | #define CCE_PERF_DEV_CNTR_ELEM(name, counter, flags) \ | |
1217 | CNTR_ELEM(#name, \ | |
1218 | (counter * 8 + CCE_COUNTER_ARRAY32), \ | |
1219 | 0, flags | CNTR_32BIT, \ | |
1220 | dev_access_u32_csr) | |
1221 | ||
1222 | #define CCE_INT_DEV_CNTR_ELEM(name, counter, flags) \ | |
1223 | CNTR_ELEM(#name, \ | |
1224 | (counter * 8 + CCE_INT_COUNTER_ARRAY32), \ | |
1225 | 0, flags | CNTR_32BIT, \ | |
1226 | dev_access_u32_csr) | |
1227 | ||
1228 | /* DC */ | |
1229 | #define DC_PERF_CNTR(name, counter, flags) \ | |
1230 | CNTR_ELEM(#name, \ | |
1231 | counter, \ | |
1232 | 0, \ | |
1233 | flags, \ | |
1234 | dev_access_u64_csr) | |
1235 | ||
1236 | #define DC_PERF_CNTR_LCB(name, counter, flags) \ | |
1237 | CNTR_ELEM(#name, \ | |
1238 | counter, \ | |
1239 | 0, \ | |
1240 | flags, \ | |
1241 | dc_access_lcb_cntr) | |
1242 | ||
1243 | /* ibp counters */ | |
1244 | #define SW_IBP_CNTR(name, cntr) \ | |
1245 | CNTR_ELEM(#name, \ | |
1246 | 0, \ | |
1247 | 0, \ | |
1248 | CNTR_SYNTH, \ | |
1249 | access_ibp_##cntr) | |
1250 | ||
1251 | u64 read_csr(const struct hfi1_devdata *dd, u32 offset) | |
1252 | { | |
1253 | u64 val; | |
1254 | ||
1255 | if (dd->flags & HFI1_PRESENT) { | |
1256 | val = readq((void __iomem *)dd->kregbase + offset); | |
1257 | return val; | |
1258 | } | |
1259 | return -1; | |
1260 | } | |
1261 | ||
1262 | void write_csr(const struct hfi1_devdata *dd, u32 offset, u64 value) | |
1263 | { | |
1264 | if (dd->flags & HFI1_PRESENT) | |
1265 | writeq(value, (void __iomem *)dd->kregbase + offset); | |
1266 | } | |
1267 | ||
1268 | void __iomem *get_csr_addr( | |
1269 | struct hfi1_devdata *dd, | |
1270 | u32 offset) | |
1271 | { | |
1272 | return (void __iomem *)dd->kregbase + offset; | |
1273 | } | |
1274 | ||
1275 | static inline u64 read_write_csr(const struct hfi1_devdata *dd, u32 csr, | |
1276 | int mode, u64 value) | |
1277 | { | |
1278 | u64 ret; | |
1279 | ||
1280 | ||
1281 | if (mode == CNTR_MODE_R) { | |
1282 | ret = read_csr(dd, csr); | |
1283 | } else if (mode == CNTR_MODE_W) { | |
1284 | write_csr(dd, csr, value); | |
1285 | ret = value; | |
1286 | } else { | |
1287 | dd_dev_err(dd, "Invalid cntr register access mode"); | |
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | hfi1_cdbg(CNTR, "csr 0x%x val 0x%llx mode %d", csr, ret, mode); | |
1292 | return ret; | |
1293 | } | |
1294 | ||
1295 | /* Dev Access */ | |
1296 | static u64 dev_access_u32_csr(const struct cntr_entry *entry, | |
1297 | void *context, int vl, int mode, u64 data) | |
1298 | { | |
a787bde8 | 1299 | struct hfi1_devdata *dd = context; |
77241056 MM |
1300 | |
1301 | if (vl != CNTR_INVALID_VL) | |
1302 | return 0; | |
1303 | return read_write_csr(dd, entry->csr, mode, data); | |
1304 | } | |
1305 | ||
1306 | static u64 dev_access_u64_csr(const struct cntr_entry *entry, void *context, | |
1307 | int vl, int mode, u64 data) | |
1308 | { | |
a787bde8 | 1309 | struct hfi1_devdata *dd = context; |
77241056 MM |
1310 | |
1311 | u64 val = 0; | |
1312 | u64 csr = entry->csr; | |
1313 | ||
1314 | if (entry->flags & CNTR_VL) { | |
1315 | if (vl == CNTR_INVALID_VL) | |
1316 | return 0; | |
1317 | csr += 8 * vl; | |
1318 | } else { | |
1319 | if (vl != CNTR_INVALID_VL) | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | val = read_write_csr(dd, csr, mode, data); | |
1324 | return val; | |
1325 | } | |
1326 | ||
1327 | static u64 dc_access_lcb_cntr(const struct cntr_entry *entry, void *context, | |
1328 | int vl, int mode, u64 data) | |
1329 | { | |
a787bde8 | 1330 | struct hfi1_devdata *dd = context; |
77241056 MM |
1331 | u32 csr = entry->csr; |
1332 | int ret = 0; | |
1333 | ||
1334 | if (vl != CNTR_INVALID_VL) | |
1335 | return 0; | |
1336 | if (mode == CNTR_MODE_R) | |
1337 | ret = read_lcb_csr(dd, csr, &data); | |
1338 | else if (mode == CNTR_MODE_W) | |
1339 | ret = write_lcb_csr(dd, csr, data); | |
1340 | ||
1341 | if (ret) { | |
1342 | dd_dev_err(dd, "Could not acquire LCB for counter 0x%x", csr); | |
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | hfi1_cdbg(CNTR, "csr 0x%x val 0x%llx mode %d", csr, data, mode); | |
1347 | return data; | |
1348 | } | |
1349 | ||
1350 | /* Port Access */ | |
1351 | static u64 port_access_u32_csr(const struct cntr_entry *entry, void *context, | |
1352 | int vl, int mode, u64 data) | |
1353 | { | |
a787bde8 | 1354 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1355 | |
1356 | if (vl != CNTR_INVALID_VL) | |
1357 | return 0; | |
1358 | return read_write_csr(ppd->dd, entry->csr, mode, data); | |
1359 | } | |
1360 | ||
1361 | static u64 port_access_u64_csr(const struct cntr_entry *entry, | |
1362 | void *context, int vl, int mode, u64 data) | |
1363 | { | |
a787bde8 | 1364 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1365 | u64 val; |
1366 | u64 csr = entry->csr; | |
1367 | ||
1368 | if (entry->flags & CNTR_VL) { | |
1369 | if (vl == CNTR_INVALID_VL) | |
1370 | return 0; | |
1371 | csr += 8 * vl; | |
1372 | } else { | |
1373 | if (vl != CNTR_INVALID_VL) | |
1374 | return 0; | |
1375 | } | |
1376 | val = read_write_csr(ppd->dd, csr, mode, data); | |
1377 | return val; | |
1378 | } | |
1379 | ||
1380 | /* Software defined */ | |
1381 | static inline u64 read_write_sw(struct hfi1_devdata *dd, u64 *cntr, int mode, | |
1382 | u64 data) | |
1383 | { | |
1384 | u64 ret; | |
1385 | ||
1386 | if (mode == CNTR_MODE_R) { | |
1387 | ret = *cntr; | |
1388 | } else if (mode == CNTR_MODE_W) { | |
1389 | *cntr = data; | |
1390 | ret = data; | |
1391 | } else { | |
1392 | dd_dev_err(dd, "Invalid cntr sw access mode"); | |
1393 | return 0; | |
1394 | } | |
1395 | ||
1396 | hfi1_cdbg(CNTR, "val 0x%llx mode %d", ret, mode); | |
1397 | ||
1398 | return ret; | |
1399 | } | |
1400 | ||
1401 | static u64 access_sw_link_dn_cnt(const struct cntr_entry *entry, void *context, | |
1402 | int vl, int mode, u64 data) | |
1403 | { | |
a787bde8 | 1404 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1405 | |
1406 | if (vl != CNTR_INVALID_VL) | |
1407 | return 0; | |
1408 | return read_write_sw(ppd->dd, &ppd->link_downed, mode, data); | |
1409 | } | |
1410 | ||
1411 | static u64 access_sw_link_up_cnt(const struct cntr_entry *entry, void *context, | |
1412 | int vl, int mode, u64 data) | |
1413 | { | |
a787bde8 | 1414 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1415 | |
1416 | if (vl != CNTR_INVALID_VL) | |
1417 | return 0; | |
1418 | return read_write_sw(ppd->dd, &ppd->link_up, mode, data); | |
1419 | } | |
1420 | ||
1421 | static u64 access_sw_xmit_discards(const struct cntr_entry *entry, | |
1422 | void *context, int vl, int mode, u64 data) | |
1423 | { | |
a787bde8 | 1424 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1425 | |
1426 | if (vl != CNTR_INVALID_VL) | |
1427 | return 0; | |
1428 | ||
1429 | return read_write_sw(ppd->dd, &ppd->port_xmit_discards, mode, data); | |
1430 | } | |
1431 | ||
1432 | static u64 access_xmit_constraint_errs(const struct cntr_entry *entry, | |
1433 | void *context, int vl, int mode, u64 data) | |
1434 | { | |
a787bde8 | 1435 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1436 | |
1437 | if (vl != CNTR_INVALID_VL) | |
1438 | return 0; | |
1439 | ||
1440 | return read_write_sw(ppd->dd, &ppd->port_xmit_constraint_errors, | |
1441 | mode, data); | |
1442 | } | |
1443 | ||
1444 | static u64 access_rcv_constraint_errs(const struct cntr_entry *entry, | |
1445 | void *context, int vl, int mode, u64 data) | |
1446 | { | |
a787bde8 | 1447 | struct hfi1_pportdata *ppd = context; |
77241056 MM |
1448 | |
1449 | if (vl != CNTR_INVALID_VL) | |
1450 | return 0; | |
1451 | ||
1452 | return read_write_sw(ppd->dd, &ppd->port_rcv_constraint_errors, | |
1453 | mode, data); | |
1454 | } | |
1455 | ||
1456 | u64 get_all_cpu_total(u64 __percpu *cntr) | |
1457 | { | |
1458 | int cpu; | |
1459 | u64 counter = 0; | |
1460 | ||
1461 | for_each_possible_cpu(cpu) | |
1462 | counter += *per_cpu_ptr(cntr, cpu); | |
1463 | return counter; | |
1464 | } | |
1465 | ||
1466 | static u64 read_write_cpu(struct hfi1_devdata *dd, u64 *z_val, | |
1467 | u64 __percpu *cntr, | |
1468 | int vl, int mode, u64 data) | |
1469 | { | |
1470 | ||
1471 | u64 ret = 0; | |
1472 | ||
1473 | if (vl != CNTR_INVALID_VL) | |
1474 | return 0; | |
1475 | ||
1476 | if (mode == CNTR_MODE_R) { | |
1477 | ret = get_all_cpu_total(cntr) - *z_val; | |
1478 | } else if (mode == CNTR_MODE_W) { | |
1479 | /* A write can only zero the counter */ | |
1480 | if (data == 0) | |
1481 | *z_val = get_all_cpu_total(cntr); | |
1482 | else | |
1483 | dd_dev_err(dd, "Per CPU cntrs can only be zeroed"); | |
1484 | } else { | |
1485 | dd_dev_err(dd, "Invalid cntr sw cpu access mode"); | |
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | return ret; | |
1490 | } | |
1491 | ||
1492 | static u64 access_sw_cpu_intr(const struct cntr_entry *entry, | |
1493 | void *context, int vl, int mode, u64 data) | |
1494 | { | |
a787bde8 | 1495 | struct hfi1_devdata *dd = context; |
77241056 MM |
1496 | |
1497 | return read_write_cpu(dd, &dd->z_int_counter, dd->int_counter, vl, | |
1498 | mode, data); | |
1499 | } | |
1500 | ||
1501 | static u64 access_sw_cpu_rcv_limit(const struct cntr_entry *entry, | |
1502 | void *context, int vl, int mode, u64 data) | |
1503 | { | |
a787bde8 | 1504 | struct hfi1_devdata *dd = context; |
77241056 MM |
1505 | |
1506 | return read_write_cpu(dd, &dd->z_rcv_limit, dd->rcv_limit, vl, | |
1507 | mode, data); | |
1508 | } | |
1509 | ||
1510 | static u64 access_sw_pio_wait(const struct cntr_entry *entry, | |
1511 | void *context, int vl, int mode, u64 data) | |
1512 | { | |
a787bde8 | 1513 | struct hfi1_devdata *dd = context; |
77241056 MM |
1514 | |
1515 | return dd->verbs_dev.n_piowait; | |
1516 | } | |
1517 | ||
1518 | static u64 access_sw_vtx_wait(const struct cntr_entry *entry, | |
1519 | void *context, int vl, int mode, u64 data) | |
1520 | { | |
a787bde8 | 1521 | struct hfi1_devdata *dd = context; |
77241056 MM |
1522 | |
1523 | return dd->verbs_dev.n_txwait; | |
1524 | } | |
1525 | ||
1526 | static u64 access_sw_kmem_wait(const struct cntr_entry *entry, | |
1527 | void *context, int vl, int mode, u64 data) | |
1528 | { | |
a787bde8 | 1529 | struct hfi1_devdata *dd = context; |
77241056 MM |
1530 | |
1531 | return dd->verbs_dev.n_kmem_wait; | |
1532 | } | |
1533 | ||
b421922e DL |
1534 | static u64 access_sw_send_schedule(const struct cntr_entry *entry, |
1535 | void *context, int vl, int mode, u64 data) | |
1536 | { | |
1537 | struct hfi1_devdata *dd = (struct hfi1_devdata *)context; | |
1538 | ||
1539 | return dd->verbs_dev.n_send_schedule; | |
1540 | } | |
1541 | ||
77241056 MM |
1542 | #define def_access_sw_cpu(cntr) \ |
1543 | static u64 access_sw_cpu_##cntr(const struct cntr_entry *entry, \ | |
1544 | void *context, int vl, int mode, u64 data) \ | |
1545 | { \ | |
1546 | struct hfi1_pportdata *ppd = (struct hfi1_pportdata *)context; \ | |
1547 | return read_write_cpu(ppd->dd, &ppd->ibport_data.z_ ##cntr, \ | |
1548 | ppd->ibport_data.cntr, vl, \ | |
1549 | mode, data); \ | |
1550 | } | |
1551 | ||
1552 | def_access_sw_cpu(rc_acks); | |
1553 | def_access_sw_cpu(rc_qacks); | |
1554 | def_access_sw_cpu(rc_delayed_comp); | |
1555 | ||
1556 | #define def_access_ibp_counter(cntr) \ | |
1557 | static u64 access_ibp_##cntr(const struct cntr_entry *entry, \ | |
1558 | void *context, int vl, int mode, u64 data) \ | |
1559 | { \ | |
1560 | struct hfi1_pportdata *ppd = (struct hfi1_pportdata *)context; \ | |
1561 | \ | |
1562 | if (vl != CNTR_INVALID_VL) \ | |
1563 | return 0; \ | |
1564 | \ | |
1565 | return read_write_sw(ppd->dd, &ppd->ibport_data.n_ ##cntr, \ | |
1566 | mode, data); \ | |
1567 | } | |
1568 | ||
1569 | def_access_ibp_counter(loop_pkts); | |
1570 | def_access_ibp_counter(rc_resends); | |
1571 | def_access_ibp_counter(rnr_naks); | |
1572 | def_access_ibp_counter(other_naks); | |
1573 | def_access_ibp_counter(rc_timeouts); | |
1574 | def_access_ibp_counter(pkt_drops); | |
1575 | def_access_ibp_counter(dmawait); | |
1576 | def_access_ibp_counter(rc_seqnak); | |
1577 | def_access_ibp_counter(rc_dupreq); | |
1578 | def_access_ibp_counter(rdma_seq); | |
1579 | def_access_ibp_counter(unaligned); | |
1580 | def_access_ibp_counter(seq_naks); | |
1581 | ||
1582 | static struct cntr_entry dev_cntrs[DEV_CNTR_LAST] = { | |
1583 | [C_RCV_OVF] = RXE32_DEV_CNTR_ELEM(RcvOverflow, RCV_BUF_OVFL_CNT, CNTR_SYNTH), | |
1584 | [C_RX_TID_FULL] = RXE32_DEV_CNTR_ELEM(RxTIDFullEr, RCV_TID_FULL_ERR_CNT, | |
1585 | CNTR_NORMAL), | |
1586 | [C_RX_TID_INVALID] = RXE32_DEV_CNTR_ELEM(RxTIDInvalid, RCV_TID_VALID_ERR_CNT, | |
1587 | CNTR_NORMAL), | |
1588 | [C_RX_TID_FLGMS] = RXE32_DEV_CNTR_ELEM(RxTidFLGMs, | |
1589 | RCV_TID_FLOW_GEN_MISMATCH_CNT, | |
1590 | CNTR_NORMAL), | |
77241056 MM |
1591 | [C_RX_CTX_EGRS] = RXE32_DEV_CNTR_ELEM(RxCtxEgrS, RCV_CONTEXT_EGR_STALL, |
1592 | CNTR_NORMAL), | |
1593 | [C_RCV_TID_FLSMS] = RXE32_DEV_CNTR_ELEM(RxTidFLSMs, | |
1594 | RCV_TID_FLOW_SEQ_MISMATCH_CNT, CNTR_NORMAL), | |
1595 | [C_CCE_PCI_CR_ST] = CCE_PERF_DEV_CNTR_ELEM(CcePciCrSt, | |
1596 | CCE_PCIE_POSTED_CRDT_STALL_CNT, CNTR_NORMAL), | |
1597 | [C_CCE_PCI_TR_ST] = CCE_PERF_DEV_CNTR_ELEM(CcePciTrSt, CCE_PCIE_TRGT_STALL_CNT, | |
1598 | CNTR_NORMAL), | |
1599 | [C_CCE_PIO_WR_ST] = CCE_PERF_DEV_CNTR_ELEM(CcePioWrSt, CCE_PIO_WR_STALL_CNT, | |
1600 | CNTR_NORMAL), | |
1601 | [C_CCE_ERR_INT] = CCE_INT_DEV_CNTR_ELEM(CceErrInt, CCE_ERR_INT_CNT, | |
1602 | CNTR_NORMAL), | |
1603 | [C_CCE_SDMA_INT] = CCE_INT_DEV_CNTR_ELEM(CceSdmaInt, CCE_SDMA_INT_CNT, | |
1604 | CNTR_NORMAL), | |
1605 | [C_CCE_MISC_INT] = CCE_INT_DEV_CNTR_ELEM(CceMiscInt, CCE_MISC_INT_CNT, | |
1606 | CNTR_NORMAL), | |
1607 | [C_CCE_RCV_AV_INT] = CCE_INT_DEV_CNTR_ELEM(CceRcvAvInt, CCE_RCV_AVAIL_INT_CNT, | |
1608 | CNTR_NORMAL), | |
1609 | [C_CCE_RCV_URG_INT] = CCE_INT_DEV_CNTR_ELEM(CceRcvUrgInt, | |
1610 | CCE_RCV_URGENT_INT_CNT, CNTR_NORMAL), | |
1611 | [C_CCE_SEND_CR_INT] = CCE_INT_DEV_CNTR_ELEM(CceSndCrInt, | |
1612 | CCE_SEND_CREDIT_INT_CNT, CNTR_NORMAL), | |
1613 | [C_DC_UNC_ERR] = DC_PERF_CNTR(DcUnctblErr, DCC_ERR_UNCORRECTABLE_CNT, | |
1614 | CNTR_SYNTH), | |
1615 | [C_DC_RCV_ERR] = DC_PERF_CNTR(DcRecvErr, DCC_ERR_PORTRCV_ERR_CNT, CNTR_SYNTH), | |
1616 | [C_DC_FM_CFG_ERR] = DC_PERF_CNTR(DcFmCfgErr, DCC_ERR_FMCONFIG_ERR_CNT, | |
1617 | CNTR_SYNTH), | |
1618 | [C_DC_RMT_PHY_ERR] = DC_PERF_CNTR(DcRmtPhyErr, DCC_ERR_RCVREMOTE_PHY_ERR_CNT, | |
1619 | CNTR_SYNTH), | |
1620 | [C_DC_DROPPED_PKT] = DC_PERF_CNTR(DcDroppedPkt, DCC_ERR_DROPPED_PKT_CNT, | |
1621 | CNTR_SYNTH), | |
1622 | [C_DC_MC_XMIT_PKTS] = DC_PERF_CNTR(DcMcXmitPkts, | |
1623 | DCC_PRF_PORT_XMIT_MULTICAST_CNT, CNTR_SYNTH), | |
1624 | [C_DC_MC_RCV_PKTS] = DC_PERF_CNTR(DcMcRcvPkts, | |
1625 | DCC_PRF_PORT_RCV_MULTICAST_PKT_CNT, | |
1626 | CNTR_SYNTH), | |
1627 | [C_DC_XMIT_CERR] = DC_PERF_CNTR(DcXmitCorr, | |
1628 | DCC_PRF_PORT_XMIT_CORRECTABLE_CNT, CNTR_SYNTH), | |
1629 | [C_DC_RCV_CERR] = DC_PERF_CNTR(DcRcvCorrCnt, DCC_PRF_PORT_RCV_CORRECTABLE_CNT, | |
1630 | CNTR_SYNTH), | |
1631 | [C_DC_RCV_FCC] = DC_PERF_CNTR(DcRxFCntl, DCC_PRF_RX_FLOW_CRTL_CNT, | |
1632 | CNTR_SYNTH), | |
1633 | [C_DC_XMIT_FCC] = DC_PERF_CNTR(DcXmitFCntl, DCC_PRF_TX_FLOW_CRTL_CNT, | |
1634 | CNTR_SYNTH), | |
1635 | [C_DC_XMIT_FLITS] = DC_PERF_CNTR(DcXmitFlits, DCC_PRF_PORT_XMIT_DATA_CNT, | |
1636 | CNTR_SYNTH), | |
1637 | [C_DC_RCV_FLITS] = DC_PERF_CNTR(DcRcvFlits, DCC_PRF_PORT_RCV_DATA_CNT, | |
1638 | CNTR_SYNTH), | |
1639 | [C_DC_XMIT_PKTS] = DC_PERF_CNTR(DcXmitPkts, DCC_PRF_PORT_XMIT_PKTS_CNT, | |
1640 | CNTR_SYNTH), | |
1641 | [C_DC_RCV_PKTS] = DC_PERF_CNTR(DcRcvPkts, DCC_PRF_PORT_RCV_PKTS_CNT, | |
1642 | CNTR_SYNTH), | |
1643 | [C_DC_RX_FLIT_VL] = DC_PERF_CNTR(DcRxFlitVl, DCC_PRF_PORT_VL_RCV_DATA_CNT, | |
1644 | CNTR_SYNTH | CNTR_VL), | |
1645 | [C_DC_RX_PKT_VL] = DC_PERF_CNTR(DcRxPktVl, DCC_PRF_PORT_VL_RCV_PKTS_CNT, | |
1646 | CNTR_SYNTH | CNTR_VL), | |
1647 | [C_DC_RCV_FCN] = DC_PERF_CNTR(DcRcvFcn, DCC_PRF_PORT_RCV_FECN_CNT, CNTR_SYNTH), | |
1648 | [C_DC_RCV_FCN_VL] = DC_PERF_CNTR(DcRcvFcnVl, DCC_PRF_PORT_VL_RCV_FECN_CNT, | |
1649 | CNTR_SYNTH | CNTR_VL), | |
1650 | [C_DC_RCV_BCN] = DC_PERF_CNTR(DcRcvBcn, DCC_PRF_PORT_RCV_BECN_CNT, CNTR_SYNTH), | |
1651 | [C_DC_RCV_BCN_VL] = DC_PERF_CNTR(DcRcvBcnVl, DCC_PRF_PORT_VL_RCV_BECN_CNT, | |
1652 | CNTR_SYNTH | CNTR_VL), | |
1653 | [C_DC_RCV_BBL] = DC_PERF_CNTR(DcRcvBbl, DCC_PRF_PORT_RCV_BUBBLE_CNT, | |
1654 | CNTR_SYNTH), | |
1655 | [C_DC_RCV_BBL_VL] = DC_PERF_CNTR(DcRcvBblVl, DCC_PRF_PORT_VL_RCV_BUBBLE_CNT, | |
1656 | CNTR_SYNTH | CNTR_VL), | |
1657 | [C_DC_MARK_FECN] = DC_PERF_CNTR(DcMarkFcn, DCC_PRF_PORT_MARK_FECN_CNT, | |
1658 | CNTR_SYNTH), | |
1659 | [C_DC_MARK_FECN_VL] = DC_PERF_CNTR(DcMarkFcnVl, DCC_PRF_PORT_VL_MARK_FECN_CNT, | |
1660 | CNTR_SYNTH | CNTR_VL), | |
1661 | [C_DC_TOTAL_CRC] = | |
1662 | DC_PERF_CNTR_LCB(DcTotCrc, DC_LCB_ERR_INFO_TOTAL_CRC_ERR, | |
1663 | CNTR_SYNTH), | |
1664 | [C_DC_CRC_LN0] = DC_PERF_CNTR_LCB(DcCrcLn0, DC_LCB_ERR_INFO_CRC_ERR_LN0, | |
1665 | CNTR_SYNTH), | |
1666 | [C_DC_CRC_LN1] = DC_PERF_CNTR_LCB(DcCrcLn1, DC_LCB_ERR_INFO_CRC_ERR_LN1, | |
1667 | CNTR_SYNTH), | |
1668 | [C_DC_CRC_LN2] = DC_PERF_CNTR_LCB(DcCrcLn2, DC_LCB_ERR_INFO_CRC_ERR_LN2, | |
1669 | CNTR_SYNTH), | |
1670 | [C_DC_CRC_LN3] = DC_PERF_CNTR_LCB(DcCrcLn3, DC_LCB_ERR_INFO_CRC_ERR_LN3, | |
1671 | CNTR_SYNTH), | |
1672 | [C_DC_CRC_MULT_LN] = | |
1673 | DC_PERF_CNTR_LCB(DcMultLn, DC_LCB_ERR_INFO_CRC_ERR_MULTI_LN, | |
1674 | CNTR_SYNTH), | |
1675 | [C_DC_TX_REPLAY] = DC_PERF_CNTR_LCB(DcTxReplay, DC_LCB_ERR_INFO_TX_REPLAY_CNT, | |
1676 | CNTR_SYNTH), | |
1677 | [C_DC_RX_REPLAY] = DC_PERF_CNTR_LCB(DcRxReplay, DC_LCB_ERR_INFO_RX_REPLAY_CNT, | |
1678 | CNTR_SYNTH), | |
1679 | [C_DC_SEQ_CRC_CNT] = | |
1680 | DC_PERF_CNTR_LCB(DcLinkSeqCrc, DC_LCB_ERR_INFO_SEQ_CRC_CNT, | |
1681 | CNTR_SYNTH), | |
1682 | [C_DC_ESC0_ONLY_CNT] = | |
1683 | DC_PERF_CNTR_LCB(DcEsc0, DC_LCB_ERR_INFO_ESCAPE_0_ONLY_CNT, | |
1684 | CNTR_SYNTH), | |
1685 | [C_DC_ESC0_PLUS1_CNT] = | |
1686 | DC_PERF_CNTR_LCB(DcEsc1, DC_LCB_ERR_INFO_ESCAPE_0_PLUS1_CNT, | |
1687 | CNTR_SYNTH), | |
1688 | [C_DC_ESC0_PLUS2_CNT] = | |
1689 | DC_PERF_CNTR_LCB(DcEsc0Plus2, DC_LCB_ERR_INFO_ESCAPE_0_PLUS2_CNT, | |
1690 | CNTR_SYNTH), | |
1691 | [C_DC_REINIT_FROM_PEER_CNT] = | |
1692 | DC_PERF_CNTR_LCB(DcReinitPeer, DC_LCB_ERR_INFO_REINIT_FROM_PEER_CNT, | |
1693 | CNTR_SYNTH), | |
1694 | [C_DC_SBE_CNT] = DC_PERF_CNTR_LCB(DcSbe, DC_LCB_ERR_INFO_SBE_CNT, | |
1695 | CNTR_SYNTH), | |
1696 | [C_DC_MISC_FLG_CNT] = | |
1697 | DC_PERF_CNTR_LCB(DcMiscFlg, DC_LCB_ERR_INFO_MISC_FLG_CNT, | |
1698 | CNTR_SYNTH), | |
1699 | [C_DC_PRF_GOOD_LTP_CNT] = | |
1700 | DC_PERF_CNTR_LCB(DcGoodLTP, DC_LCB_PRF_GOOD_LTP_CNT, CNTR_SYNTH), | |
1701 | [C_DC_PRF_ACCEPTED_LTP_CNT] = | |
1702 | DC_PERF_CNTR_LCB(DcAccLTP, DC_LCB_PRF_ACCEPTED_LTP_CNT, | |
1703 | CNTR_SYNTH), | |
1704 | [C_DC_PRF_RX_FLIT_CNT] = | |
1705 | DC_PERF_CNTR_LCB(DcPrfRxFlit, DC_LCB_PRF_RX_FLIT_CNT, CNTR_SYNTH), | |
1706 | [C_DC_PRF_TX_FLIT_CNT] = | |
1707 | DC_PERF_CNTR_LCB(DcPrfTxFlit, DC_LCB_PRF_TX_FLIT_CNT, CNTR_SYNTH), | |
1708 | [C_DC_PRF_CLK_CNTR] = | |
1709 | DC_PERF_CNTR_LCB(DcPrfClk, DC_LCB_PRF_CLK_CNTR, CNTR_SYNTH), | |
1710 | [C_DC_PG_DBG_FLIT_CRDTS_CNT] = | |
1711 | DC_PERF_CNTR_LCB(DcFltCrdts, DC_LCB_PG_DBG_FLIT_CRDTS_CNT, CNTR_SYNTH), | |
1712 | [C_DC_PG_STS_PAUSE_COMPLETE_CNT] = | |
1713 | DC_PERF_CNTR_LCB(DcPauseComp, DC_LCB_PG_STS_PAUSE_COMPLETE_CNT, | |
1714 | CNTR_SYNTH), | |
1715 | [C_DC_PG_STS_TX_SBE_CNT] = | |
1716 | DC_PERF_CNTR_LCB(DcStsTxSbe, DC_LCB_PG_STS_TX_SBE_CNT, CNTR_SYNTH), | |
1717 | [C_DC_PG_STS_TX_MBE_CNT] = | |
1718 | DC_PERF_CNTR_LCB(DcStsTxMbe, DC_LCB_PG_STS_TX_MBE_CNT, | |
1719 | CNTR_SYNTH), | |
1720 | [C_SW_CPU_INTR] = CNTR_ELEM("Intr", 0, 0, CNTR_NORMAL, | |
1721 | access_sw_cpu_intr), | |
1722 | [C_SW_CPU_RCV_LIM] = CNTR_ELEM("RcvLimit", 0, 0, CNTR_NORMAL, | |
1723 | access_sw_cpu_rcv_limit), | |
1724 | [C_SW_VTX_WAIT] = CNTR_ELEM("vTxWait", 0, 0, CNTR_NORMAL, | |
1725 | access_sw_vtx_wait), | |
1726 | [C_SW_PIO_WAIT] = CNTR_ELEM("PioWait", 0, 0, CNTR_NORMAL, | |
1727 | access_sw_pio_wait), | |
1728 | [C_SW_KMEM_WAIT] = CNTR_ELEM("KmemWait", 0, 0, CNTR_NORMAL, | |
1729 | access_sw_kmem_wait), | |
b421922e DL |
1730 | [C_SW_SEND_SCHED] = CNTR_ELEM("SendSched", 0, 0, CNTR_NORMAL, |
1731 | access_sw_send_schedule), | |
77241056 MM |
1732 | }; |
1733 | ||
1734 | static struct cntr_entry port_cntrs[PORT_CNTR_LAST] = { | |
1735 | [C_TX_UNSUP_VL] = TXE32_PORT_CNTR_ELEM(TxUnVLErr, SEND_UNSUP_VL_ERR_CNT, | |
1736 | CNTR_NORMAL), | |
1737 | [C_TX_INVAL_LEN] = TXE32_PORT_CNTR_ELEM(TxInvalLen, SEND_LEN_ERR_CNT, | |
1738 | CNTR_NORMAL), | |
1739 | [C_TX_MM_LEN_ERR] = TXE32_PORT_CNTR_ELEM(TxMMLenErr, SEND_MAX_MIN_LEN_ERR_CNT, | |
1740 | CNTR_NORMAL), | |
1741 | [C_TX_UNDERRUN] = TXE32_PORT_CNTR_ELEM(TxUnderrun, SEND_UNDERRUN_CNT, | |
1742 | CNTR_NORMAL), | |
1743 | [C_TX_FLOW_STALL] = TXE32_PORT_CNTR_ELEM(TxFlowStall, SEND_FLOW_STALL_CNT, | |
1744 | CNTR_NORMAL), | |
1745 | [C_TX_DROPPED] = TXE32_PORT_CNTR_ELEM(TxDropped, SEND_DROPPED_PKT_CNT, | |
1746 | CNTR_NORMAL), | |
1747 | [C_TX_HDR_ERR] = TXE32_PORT_CNTR_ELEM(TxHdrErr, SEND_HEADERS_ERR_CNT, | |
1748 | CNTR_NORMAL), | |
1749 | [C_TX_PKT] = TXE64_PORT_CNTR_ELEM(TxPkt, SEND_DATA_PKT_CNT, CNTR_NORMAL), | |
1750 | [C_TX_WORDS] = TXE64_PORT_CNTR_ELEM(TxWords, SEND_DWORD_CNT, CNTR_NORMAL), | |
1751 | [C_TX_WAIT] = TXE64_PORT_CNTR_ELEM(TxWait, SEND_WAIT_CNT, CNTR_SYNTH), | |
1752 | [C_TX_FLIT_VL] = TXE64_PORT_CNTR_ELEM(TxFlitVL, SEND_DATA_VL0_CNT, | |
1753 | CNTR_SYNTH | CNTR_VL), | |
1754 | [C_TX_PKT_VL] = TXE64_PORT_CNTR_ELEM(TxPktVL, SEND_DATA_PKT_VL0_CNT, | |
1755 | CNTR_SYNTH | CNTR_VL), | |
1756 | [C_TX_WAIT_VL] = TXE64_PORT_CNTR_ELEM(TxWaitVL, SEND_WAIT_VL0_CNT, | |
1757 | CNTR_SYNTH | CNTR_VL), | |
1758 | [C_RX_PKT] = RXE64_PORT_CNTR_ELEM(RxPkt, RCV_DATA_PKT_CNT, CNTR_NORMAL), | |
1759 | [C_RX_WORDS] = RXE64_PORT_CNTR_ELEM(RxWords, RCV_DWORD_CNT, CNTR_NORMAL), | |
1760 | [C_SW_LINK_DOWN] = CNTR_ELEM("SwLinkDown", 0, 0, CNTR_SYNTH | CNTR_32BIT, | |
1761 | access_sw_link_dn_cnt), | |
1762 | [C_SW_LINK_UP] = CNTR_ELEM("SwLinkUp", 0, 0, CNTR_SYNTH | CNTR_32BIT, | |
1763 | access_sw_link_up_cnt), | |
1764 | [C_SW_XMIT_DSCD] = CNTR_ELEM("XmitDscd", 0, 0, CNTR_SYNTH | CNTR_32BIT, | |
1765 | access_sw_xmit_discards), | |
1766 | [C_SW_XMIT_DSCD_VL] = CNTR_ELEM("XmitDscdVl", 0, 0, | |
1767 | CNTR_SYNTH | CNTR_32BIT | CNTR_VL, | |
1768 | access_sw_xmit_discards), | |
1769 | [C_SW_XMIT_CSTR_ERR] = CNTR_ELEM("XmitCstrErr", 0, 0, CNTR_SYNTH, | |
1770 | access_xmit_constraint_errs), | |
1771 | [C_SW_RCV_CSTR_ERR] = CNTR_ELEM("RcvCstrErr", 0, 0, CNTR_SYNTH, | |
1772 | access_rcv_constraint_errs), | |
1773 | [C_SW_IBP_LOOP_PKTS] = SW_IBP_CNTR(LoopPkts, loop_pkts), | |
1774 | [C_SW_IBP_RC_RESENDS] = SW_IBP_CNTR(RcResend, rc_resends), | |
1775 | [C_SW_IBP_RNR_NAKS] = SW_IBP_CNTR(RnrNak, rnr_naks), | |
1776 | [C_SW_IBP_OTHER_NAKS] = SW_IBP_CNTR(OtherNak, other_naks), | |
1777 | [C_SW_IBP_RC_TIMEOUTS] = SW_IBP_CNTR(RcTimeOut, rc_timeouts), | |
1778 | [C_SW_IBP_PKT_DROPS] = SW_IBP_CNTR(PktDrop, pkt_drops), | |
1779 | [C_SW_IBP_DMA_WAIT] = SW_IBP_CNTR(DmaWait, dmawait), | |
1780 | [C_SW_IBP_RC_SEQNAK] = SW_IBP_CNTR(RcSeqNak, rc_seqnak), | |
1781 | [C_SW_IBP_RC_DUPREQ] = SW_IBP_CNTR(RcDupRew, rc_dupreq), | |
1782 | [C_SW_IBP_RDMA_SEQ] = SW_IBP_CNTR(RdmaSeq, rdma_seq), | |
1783 | [C_SW_IBP_UNALIGNED] = SW_IBP_CNTR(Unaligned, unaligned), | |
1784 | [C_SW_IBP_SEQ_NAK] = SW_IBP_CNTR(SeqNak, seq_naks), | |
1785 | [C_SW_CPU_RC_ACKS] = CNTR_ELEM("RcAcks", 0, 0, CNTR_NORMAL, | |
1786 | access_sw_cpu_rc_acks), | |
1787 | [C_SW_CPU_RC_QACKS] = CNTR_ELEM("RcQacks", 0, 0, CNTR_NORMAL, | |
1788 | access_sw_cpu_rc_qacks), | |
1789 | [C_SW_CPU_RC_DELAYED_COMP] = CNTR_ELEM("RcDelayComp", 0, 0, CNTR_NORMAL, | |
1790 | access_sw_cpu_rc_delayed_comp), | |
1791 | [OVR_LBL(0)] = OVR_ELM(0), [OVR_LBL(1)] = OVR_ELM(1), | |
1792 | [OVR_LBL(2)] = OVR_ELM(2), [OVR_LBL(3)] = OVR_ELM(3), | |
1793 | [OVR_LBL(4)] = OVR_ELM(4), [OVR_LBL(5)] = OVR_ELM(5), | |
1794 | [OVR_LBL(6)] = OVR_ELM(6), [OVR_LBL(7)] = OVR_ELM(7), | |
1795 | [OVR_LBL(8)] = OVR_ELM(8), [OVR_LBL(9)] = OVR_ELM(9), | |
1796 | [OVR_LBL(10)] = OVR_ELM(10), [OVR_LBL(11)] = OVR_ELM(11), | |
1797 | [OVR_LBL(12)] = OVR_ELM(12), [OVR_LBL(13)] = OVR_ELM(13), | |
1798 | [OVR_LBL(14)] = OVR_ELM(14), [OVR_LBL(15)] = OVR_ELM(15), | |
1799 | [OVR_LBL(16)] = OVR_ELM(16), [OVR_LBL(17)] = OVR_ELM(17), | |
1800 | [OVR_LBL(18)] = OVR_ELM(18), [OVR_LBL(19)] = OVR_ELM(19), | |
1801 | [OVR_LBL(20)] = OVR_ELM(20), [OVR_LBL(21)] = OVR_ELM(21), | |
1802 | [OVR_LBL(22)] = OVR_ELM(22), [OVR_LBL(23)] = OVR_ELM(23), | |
1803 | [OVR_LBL(24)] = OVR_ELM(24), [OVR_LBL(25)] = OVR_ELM(25), | |
1804 | [OVR_LBL(26)] = OVR_ELM(26), [OVR_LBL(27)] = OVR_ELM(27), | |
1805 | [OVR_LBL(28)] = OVR_ELM(28), [OVR_LBL(29)] = OVR_ELM(29), | |
1806 | [OVR_LBL(30)] = OVR_ELM(30), [OVR_LBL(31)] = OVR_ELM(31), | |
1807 | [OVR_LBL(32)] = OVR_ELM(32), [OVR_LBL(33)] = OVR_ELM(33), | |
1808 | [OVR_LBL(34)] = OVR_ELM(34), [OVR_LBL(35)] = OVR_ELM(35), | |
1809 | [OVR_LBL(36)] = OVR_ELM(36), [OVR_LBL(37)] = OVR_ELM(37), | |
1810 | [OVR_LBL(38)] = OVR_ELM(38), [OVR_LBL(39)] = OVR_ELM(39), | |
1811 | [OVR_LBL(40)] = OVR_ELM(40), [OVR_LBL(41)] = OVR_ELM(41), | |
1812 | [OVR_LBL(42)] = OVR_ELM(42), [OVR_LBL(43)] = OVR_ELM(43), | |
1813 | [OVR_LBL(44)] = OVR_ELM(44), [OVR_LBL(45)] = OVR_ELM(45), | |
1814 | [OVR_LBL(46)] = OVR_ELM(46), [OVR_LBL(47)] = OVR_ELM(47), | |
1815 | [OVR_LBL(48)] = OVR_ELM(48), [OVR_LBL(49)] = OVR_ELM(49), | |
1816 | [OVR_LBL(50)] = OVR_ELM(50), [OVR_LBL(51)] = OVR_ELM(51), | |
1817 | [OVR_LBL(52)] = OVR_ELM(52), [OVR_LBL(53)] = OVR_ELM(53), | |
1818 | [OVR_LBL(54)] = OVR_ELM(54), [OVR_LBL(55)] = OVR_ELM(55), | |
1819 | [OVR_LBL(56)] = OVR_ELM(56), [OVR_LBL(57)] = OVR_ELM(57), | |
1820 | [OVR_LBL(58)] = OVR_ELM(58), [OVR_LBL(59)] = OVR_ELM(59), | |
1821 | [OVR_LBL(60)] = OVR_ELM(60), [OVR_LBL(61)] = OVR_ELM(61), | |
1822 | [OVR_LBL(62)] = OVR_ELM(62), [OVR_LBL(63)] = OVR_ELM(63), | |
1823 | [OVR_LBL(64)] = OVR_ELM(64), [OVR_LBL(65)] = OVR_ELM(65), | |
1824 | [OVR_LBL(66)] = OVR_ELM(66), [OVR_LBL(67)] = OVR_ELM(67), | |
1825 | [OVR_LBL(68)] = OVR_ELM(68), [OVR_LBL(69)] = OVR_ELM(69), | |
1826 | [OVR_LBL(70)] = OVR_ELM(70), [OVR_LBL(71)] = OVR_ELM(71), | |
1827 | [OVR_LBL(72)] = OVR_ELM(72), [OVR_LBL(73)] = OVR_ELM(73), | |
1828 | [OVR_LBL(74)] = OVR_ELM(74), [OVR_LBL(75)] = OVR_ELM(75), | |
1829 | [OVR_LBL(76)] = OVR_ELM(76), [OVR_LBL(77)] = OVR_ELM(77), | |
1830 | [OVR_LBL(78)] = OVR_ELM(78), [OVR_LBL(79)] = OVR_ELM(79), | |
1831 | [OVR_LBL(80)] = OVR_ELM(80), [OVR_LBL(81)] = OVR_ELM(81), | |
1832 | [OVR_LBL(82)] = OVR_ELM(82), [OVR_LBL(83)] = OVR_ELM(83), | |
1833 | [OVR_LBL(84)] = OVR_ELM(84), [OVR_LBL(85)] = OVR_ELM(85), | |
1834 | [OVR_LBL(86)] = OVR_ELM(86), [OVR_LBL(87)] = OVR_ELM(87), | |
1835 | [OVR_LBL(88)] = OVR_ELM(88), [OVR_LBL(89)] = OVR_ELM(89), | |
1836 | [OVR_LBL(90)] = OVR_ELM(90), [OVR_LBL(91)] = OVR_ELM(91), | |
1837 | [OVR_LBL(92)] = OVR_ELM(92), [OVR_LBL(93)] = OVR_ELM(93), | |
1838 | [OVR_LBL(94)] = OVR_ELM(94), [OVR_LBL(95)] = OVR_ELM(95), | |
1839 | [OVR_LBL(96)] = OVR_ELM(96), [OVR_LBL(97)] = OVR_ELM(97), | |
1840 | [OVR_LBL(98)] = OVR_ELM(98), [OVR_LBL(99)] = OVR_ELM(99), | |
1841 | [OVR_LBL(100)] = OVR_ELM(100), [OVR_LBL(101)] = OVR_ELM(101), | |
1842 | [OVR_LBL(102)] = OVR_ELM(102), [OVR_LBL(103)] = OVR_ELM(103), | |
1843 | [OVR_LBL(104)] = OVR_ELM(104), [OVR_LBL(105)] = OVR_ELM(105), | |
1844 | [OVR_LBL(106)] = OVR_ELM(106), [OVR_LBL(107)] = OVR_ELM(107), | |
1845 | [OVR_LBL(108)] = OVR_ELM(108), [OVR_LBL(109)] = OVR_ELM(109), | |
1846 | [OVR_LBL(110)] = OVR_ELM(110), [OVR_LBL(111)] = OVR_ELM(111), | |
1847 | [OVR_LBL(112)] = OVR_ELM(112), [OVR_LBL(113)] = OVR_ELM(113), | |
1848 | [OVR_LBL(114)] = OVR_ELM(114), [OVR_LBL(115)] = OVR_ELM(115), | |
1849 | [OVR_LBL(116)] = OVR_ELM(116), [OVR_LBL(117)] = OVR_ELM(117), | |
1850 | [OVR_LBL(118)] = OVR_ELM(118), [OVR_LBL(119)] = OVR_ELM(119), | |
1851 | [OVR_LBL(120)] = OVR_ELM(120), [OVR_LBL(121)] = OVR_ELM(121), | |
1852 | [OVR_LBL(122)] = OVR_ELM(122), [OVR_LBL(123)] = OVR_ELM(123), | |
1853 | [OVR_LBL(124)] = OVR_ELM(124), [OVR_LBL(125)] = OVR_ELM(125), | |
1854 | [OVR_LBL(126)] = OVR_ELM(126), [OVR_LBL(127)] = OVR_ELM(127), | |
1855 | [OVR_LBL(128)] = OVR_ELM(128), [OVR_LBL(129)] = OVR_ELM(129), | |
1856 | [OVR_LBL(130)] = OVR_ELM(130), [OVR_LBL(131)] = OVR_ELM(131), | |
1857 | [OVR_LBL(132)] = OVR_ELM(132), [OVR_LBL(133)] = OVR_ELM(133), | |
1858 | [OVR_LBL(134)] = OVR_ELM(134), [OVR_LBL(135)] = OVR_ELM(135), | |
1859 | [OVR_LBL(136)] = OVR_ELM(136), [OVR_LBL(137)] = OVR_ELM(137), | |
1860 | [OVR_LBL(138)] = OVR_ELM(138), [OVR_LBL(139)] = OVR_ELM(139), | |
1861 | [OVR_LBL(140)] = OVR_ELM(140), [OVR_LBL(141)] = OVR_ELM(141), | |
1862 | [OVR_LBL(142)] = OVR_ELM(142), [OVR_LBL(143)] = OVR_ELM(143), | |
1863 | [OVR_LBL(144)] = OVR_ELM(144), [OVR_LBL(145)] = OVR_ELM(145), | |
1864 | [OVR_LBL(146)] = OVR_ELM(146), [OVR_LBL(147)] = OVR_ELM(147), | |
1865 | [OVR_LBL(148)] = OVR_ELM(148), [OVR_LBL(149)] = OVR_ELM(149), | |
1866 | [OVR_LBL(150)] = OVR_ELM(150), [OVR_LBL(151)] = OVR_ELM(151), | |
1867 | [OVR_LBL(152)] = OVR_ELM(152), [OVR_LBL(153)] = OVR_ELM(153), | |
1868 | [OVR_LBL(154)] = OVR_ELM(154), [OVR_LBL(155)] = OVR_ELM(155), | |
1869 | [OVR_LBL(156)] = OVR_ELM(156), [OVR_LBL(157)] = OVR_ELM(157), | |
1870 | [OVR_LBL(158)] = OVR_ELM(158), [OVR_LBL(159)] = OVR_ELM(159), | |
1871 | }; | |
1872 | ||
1873 | /* ======================================================================== */ | |
1874 | ||
77241056 MM |
1875 | /* return true if this is chip revision revision a */ |
1876 | int is_ax(struct hfi1_devdata *dd) | |
1877 | { | |
1878 | u8 chip_rev_minor = | |
1879 | dd->revision >> CCE_REVISION_CHIP_REV_MINOR_SHIFT | |
1880 | & CCE_REVISION_CHIP_REV_MINOR_MASK; | |
1881 | return (chip_rev_minor & 0xf0) == 0; | |
1882 | } | |
1883 | ||
1884 | /* return true if this is chip revision revision b */ | |
1885 | int is_bx(struct hfi1_devdata *dd) | |
1886 | { | |
1887 | u8 chip_rev_minor = | |
1888 | dd->revision >> CCE_REVISION_CHIP_REV_MINOR_SHIFT | |
1889 | & CCE_REVISION_CHIP_REV_MINOR_MASK; | |
995deafa | 1890 | return (chip_rev_minor & 0xF0) == 0x10; |
77241056 MM |
1891 | } |
1892 | ||
1893 | /* | |
1894 | * Append string s to buffer buf. Arguments curp and len are the current | |
1895 | * position and remaining length, respectively. | |
1896 | * | |
1897 | * return 0 on success, 1 on out of room | |
1898 | */ | |
1899 | static int append_str(char *buf, char **curp, int *lenp, const char *s) | |
1900 | { | |
1901 | char *p = *curp; | |
1902 | int len = *lenp; | |
1903 | int result = 0; /* success */ | |
1904 | char c; | |
1905 | ||
1906 | /* add a comma, if first in the buffer */ | |
1907 | if (p != buf) { | |
1908 | if (len == 0) { | |
1909 | result = 1; /* out of room */ | |
1910 | goto done; | |
1911 | } | |
1912 | *p++ = ','; | |
1913 | len--; | |
1914 | } | |
1915 | ||
1916 | /* copy the string */ | |
1917 | while ((c = *s++) != 0) { | |
1918 | if (len == 0) { | |
1919 | result = 1; /* out of room */ | |
1920 | goto done; | |
1921 | } | |
1922 | *p++ = c; | |
1923 | len--; | |
1924 | } | |
1925 | ||
1926 | done: | |
1927 | /* write return values */ | |
1928 | *curp = p; | |
1929 | *lenp = len; | |
1930 | ||
1931 | return result; | |
1932 | } | |
1933 | ||
1934 | /* | |
1935 | * Using the given flag table, print a comma separated string into | |
1936 | * the buffer. End in '*' if the buffer is too short. | |
1937 | */ | |
1938 | static char *flag_string(char *buf, int buf_len, u64 flags, | |
1939 | struct flag_table *table, int table_size) | |
1940 | { | |
1941 | char extra[32]; | |
1942 | char *p = buf; | |
1943 | int len = buf_len; | |
1944 | int no_room = 0; | |
1945 | int i; | |
1946 | ||
1947 | /* make sure there is at least 2 so we can form "*" */ | |
1948 | if (len < 2) | |
1949 | return ""; | |
1950 | ||
1951 | len--; /* leave room for a nul */ | |
1952 | for (i = 0; i < table_size; i++) { | |
1953 | if (flags & table[i].flag) { | |
1954 | no_room = append_str(buf, &p, &len, table[i].str); | |
1955 | if (no_room) | |
1956 | break; | |
1957 | flags &= ~table[i].flag; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | /* any undocumented bits left? */ | |
1962 | if (!no_room && flags) { | |
1963 | snprintf(extra, sizeof(extra), "bits 0x%llx", flags); | |
1964 | no_room = append_str(buf, &p, &len, extra); | |
1965 | } | |
1966 | ||
1967 | /* add * if ran out of room */ | |
1968 | if (no_room) { | |
1969 | /* may need to back up to add space for a '*' */ | |
1970 | if (len == 0) | |
1971 | --p; | |
1972 | *p++ = '*'; | |
1973 | } | |
1974 | ||
1975 | /* add final nul - space already allocated above */ | |
1976 | *p = 0; | |
1977 | return buf; | |
1978 | } | |
1979 | ||
1980 | /* first 8 CCE error interrupt source names */ | |
1981 | static const char * const cce_misc_names[] = { | |
1982 | "CceErrInt", /* 0 */ | |
1983 | "RxeErrInt", /* 1 */ | |
1984 | "MiscErrInt", /* 2 */ | |
1985 | "Reserved3", /* 3 */ | |
1986 | "PioErrInt", /* 4 */ | |
1987 | "SDmaErrInt", /* 5 */ | |
1988 | "EgressErrInt", /* 6 */ | |
1989 | "TxeErrInt" /* 7 */ | |
1990 | }; | |
1991 | ||
1992 | /* | |
1993 | * Return the miscellaneous error interrupt name. | |
1994 | */ | |
1995 | static char *is_misc_err_name(char *buf, size_t bsize, unsigned int source) | |
1996 | { | |
1997 | if (source < ARRAY_SIZE(cce_misc_names)) | |
1998 | strncpy(buf, cce_misc_names[source], bsize); | |
1999 | else | |
2000 | snprintf(buf, | |
2001 | bsize, | |
2002 | "Reserved%u", | |
2003 | source + IS_GENERAL_ERR_START); | |
2004 | ||
2005 | return buf; | |
2006 | } | |
2007 | ||
2008 | /* | |
2009 | * Return the SDMA engine error interrupt name. | |
2010 | */ | |
2011 | static char *is_sdma_eng_err_name(char *buf, size_t bsize, unsigned int source) | |
2012 | { | |
2013 | snprintf(buf, bsize, "SDmaEngErrInt%u", source); | |
2014 | return buf; | |
2015 | } | |
2016 | ||
2017 | /* | |
2018 | * Return the send context error interrupt name. | |
2019 | */ | |
2020 | static char *is_sendctxt_err_name(char *buf, size_t bsize, unsigned int source) | |
2021 | { | |
2022 | snprintf(buf, bsize, "SendCtxtErrInt%u", source); | |
2023 | return buf; | |
2024 | } | |
2025 | ||
2026 | static const char * const various_names[] = { | |
2027 | "PbcInt", | |
2028 | "GpioAssertInt", | |
2029 | "Qsfp1Int", | |
2030 | "Qsfp2Int", | |
2031 | "TCritInt" | |
2032 | }; | |
2033 | ||
2034 | /* | |
2035 | * Return the various interrupt name. | |
2036 | */ | |
2037 | static char *is_various_name(char *buf, size_t bsize, unsigned int source) | |
2038 | { | |
2039 | if (source < ARRAY_SIZE(various_names)) | |
2040 | strncpy(buf, various_names[source], bsize); | |
2041 | else | |
2042 | snprintf(buf, bsize, "Reserved%u", source+IS_VARIOUS_START); | |
2043 | return buf; | |
2044 | } | |
2045 | ||
2046 | /* | |
2047 | * Return the DC interrupt name. | |
2048 | */ | |
2049 | static char *is_dc_name(char *buf, size_t bsize, unsigned int source) | |
2050 | { | |
2051 | static const char * const dc_int_names[] = { | |
2052 | "common", | |
2053 | "lcb", | |
2054 | "8051", | |
2055 | "lbm" /* local block merge */ | |
2056 | }; | |
2057 | ||
2058 | if (source < ARRAY_SIZE(dc_int_names)) | |
2059 | snprintf(buf, bsize, "dc_%s_int", dc_int_names[source]); | |
2060 | else | |
2061 | snprintf(buf, bsize, "DCInt%u", source); | |
2062 | return buf; | |
2063 | } | |
2064 | ||
2065 | static const char * const sdma_int_names[] = { | |
2066 | "SDmaInt", | |
2067 | "SdmaIdleInt", | |
2068 | "SdmaProgressInt", | |
2069 | }; | |
2070 | ||
2071 | /* | |
2072 | * Return the SDMA engine interrupt name. | |
2073 | */ | |
2074 | static char *is_sdma_eng_name(char *buf, size_t bsize, unsigned int source) | |
2075 | { | |
2076 | /* what interrupt */ | |
2077 | unsigned int what = source / TXE_NUM_SDMA_ENGINES; | |
2078 | /* which engine */ | |
2079 | unsigned int which = source % TXE_NUM_SDMA_ENGINES; | |
2080 | ||
2081 | if (likely(what < 3)) | |
2082 | snprintf(buf, bsize, "%s%u", sdma_int_names[what], which); | |
2083 | else | |
2084 | snprintf(buf, bsize, "Invalid SDMA interrupt %u", source); | |
2085 | return buf; | |
2086 | } | |
2087 | ||
2088 | /* | |
2089 | * Return the receive available interrupt name. | |
2090 | */ | |
2091 | static char *is_rcv_avail_name(char *buf, size_t bsize, unsigned int source) | |
2092 | { | |
2093 | snprintf(buf, bsize, "RcvAvailInt%u", source); | |
2094 | return buf; | |
2095 | } | |
2096 | ||
2097 | /* | |
2098 | * Return the receive urgent interrupt name. | |
2099 | */ | |
2100 | static char *is_rcv_urgent_name(char *buf, size_t bsize, unsigned int source) | |
2101 | { | |
2102 | snprintf(buf, bsize, "RcvUrgentInt%u", source); | |
2103 | return buf; | |
2104 | } | |
2105 | ||
2106 | /* | |
2107 | * Return the send credit interrupt name. | |
2108 | */ | |
2109 | static char *is_send_credit_name(char *buf, size_t bsize, unsigned int source) | |
2110 | { | |
2111 | snprintf(buf, bsize, "SendCreditInt%u", source); | |
2112 | return buf; | |
2113 | } | |
2114 | ||
2115 | /* | |
2116 | * Return the reserved interrupt name. | |
2117 | */ | |
2118 | static char *is_reserved_name(char *buf, size_t bsize, unsigned int source) | |
2119 | { | |
2120 | snprintf(buf, bsize, "Reserved%u", source + IS_RESERVED_START); | |
2121 | return buf; | |
2122 | } | |
2123 | ||
2124 | static char *cce_err_status_string(char *buf, int buf_len, u64 flags) | |
2125 | { | |
2126 | return flag_string(buf, buf_len, flags, | |
2127 | cce_err_status_flags, ARRAY_SIZE(cce_err_status_flags)); | |
2128 | } | |
2129 | ||
2130 | static char *rxe_err_status_string(char *buf, int buf_len, u64 flags) | |
2131 | { | |
2132 | return flag_string(buf, buf_len, flags, | |
2133 | rxe_err_status_flags, ARRAY_SIZE(rxe_err_status_flags)); | |
2134 | } | |
2135 | ||
2136 | static char *misc_err_status_string(char *buf, int buf_len, u64 flags) | |
2137 | { | |
2138 | return flag_string(buf, buf_len, flags, misc_err_status_flags, | |
2139 | ARRAY_SIZE(misc_err_status_flags)); | |
2140 | } | |
2141 | ||
2142 | static char *pio_err_status_string(char *buf, int buf_len, u64 flags) | |
2143 | { | |
2144 | return flag_string(buf, buf_len, flags, | |
2145 | pio_err_status_flags, ARRAY_SIZE(pio_err_status_flags)); | |
2146 | } | |
2147 | ||
2148 | static char *sdma_err_status_string(char *buf, int buf_len, u64 flags) | |
2149 | { | |
2150 | return flag_string(buf, buf_len, flags, | |
2151 | sdma_err_status_flags, | |
2152 | ARRAY_SIZE(sdma_err_status_flags)); | |
2153 | } | |
2154 | ||
2155 | static char *egress_err_status_string(char *buf, int buf_len, u64 flags) | |
2156 | { | |
2157 | return flag_string(buf, buf_len, flags, | |
2158 | egress_err_status_flags, ARRAY_SIZE(egress_err_status_flags)); | |
2159 | } | |
2160 | ||
2161 | static char *egress_err_info_string(char *buf, int buf_len, u64 flags) | |
2162 | { | |
2163 | return flag_string(buf, buf_len, flags, | |
2164 | egress_err_info_flags, ARRAY_SIZE(egress_err_info_flags)); | |
2165 | } | |
2166 | ||
2167 | static char *send_err_status_string(char *buf, int buf_len, u64 flags) | |
2168 | { | |
2169 | return flag_string(buf, buf_len, flags, | |
2170 | send_err_status_flags, | |
2171 | ARRAY_SIZE(send_err_status_flags)); | |
2172 | } | |
2173 | ||
2174 | static void handle_cce_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2175 | { | |
2176 | char buf[96]; | |
2177 | ||
2178 | /* | |
2179 | * For most these errors, there is nothing that can be done except | |
2180 | * report or record it. | |
2181 | */ | |
2182 | dd_dev_info(dd, "CCE Error: %s\n", | |
2183 | cce_err_status_string(buf, sizeof(buf), reg)); | |
2184 | ||
995deafa MM |
2185 | if ((reg & CCE_ERR_STATUS_CCE_CLI2_ASYNC_FIFO_PARITY_ERR_SMASK) && |
2186 | is_ax(dd) && (dd->icode != ICODE_FUNCTIONAL_SIMULATOR)) { | |
77241056 MM |
2187 | /* this error requires a manual drop into SPC freeze mode */ |
2188 | /* then a fix up */ | |
2189 | start_freeze_handling(dd->pport, FREEZE_SELF); | |
2190 | } | |
2191 | } | |
2192 | ||
2193 | /* | |
2194 | * Check counters for receive errors that do not have an interrupt | |
2195 | * associated with them. | |
2196 | */ | |
2197 | #define RCVERR_CHECK_TIME 10 | |
2198 | static void update_rcverr_timer(unsigned long opaque) | |
2199 | { | |
2200 | struct hfi1_devdata *dd = (struct hfi1_devdata *)opaque; | |
2201 | struct hfi1_pportdata *ppd = dd->pport; | |
2202 | u32 cur_ovfl_cnt = read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL); | |
2203 | ||
2204 | if (dd->rcv_ovfl_cnt < cur_ovfl_cnt && | |
2205 | ppd->port_error_action & OPA_PI_MASK_EX_BUFFER_OVERRUN) { | |
2206 | dd_dev_info(dd, "%s: PortErrorAction bounce\n", __func__); | |
2207 | set_link_down_reason(ppd, | |
2208 | OPA_LINKDOWN_REASON_EXCESSIVE_BUFFER_OVERRUN, 0, | |
2209 | OPA_LINKDOWN_REASON_EXCESSIVE_BUFFER_OVERRUN); | |
2210 | queue_work(ppd->hfi1_wq, &ppd->link_bounce_work); | |
2211 | } | |
2212 | dd->rcv_ovfl_cnt = (u32) cur_ovfl_cnt; | |
2213 | ||
2214 | mod_timer(&dd->rcverr_timer, jiffies + HZ * RCVERR_CHECK_TIME); | |
2215 | } | |
2216 | ||
2217 | static int init_rcverr(struct hfi1_devdata *dd) | |
2218 | { | |
24523a94 | 2219 | setup_timer(&dd->rcverr_timer, update_rcverr_timer, (unsigned long)dd); |
77241056 MM |
2220 | /* Assume the hardware counter has been reset */ |
2221 | dd->rcv_ovfl_cnt = 0; | |
2222 | return mod_timer(&dd->rcverr_timer, jiffies + HZ * RCVERR_CHECK_TIME); | |
2223 | } | |
2224 | ||
2225 | static void free_rcverr(struct hfi1_devdata *dd) | |
2226 | { | |
2227 | if (dd->rcverr_timer.data) | |
2228 | del_timer_sync(&dd->rcverr_timer); | |
2229 | dd->rcverr_timer.data = 0; | |
2230 | } | |
2231 | ||
2232 | static void handle_rxe_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2233 | { | |
2234 | char buf[96]; | |
2235 | ||
2236 | dd_dev_info(dd, "Receive Error: %s\n", | |
2237 | rxe_err_status_string(buf, sizeof(buf), reg)); | |
2238 | ||
2239 | if (reg & ALL_RXE_FREEZE_ERR) { | |
2240 | int flags = 0; | |
2241 | ||
2242 | /* | |
2243 | * Freeze mode recovery is disabled for the errors | |
2244 | * in RXE_FREEZE_ABORT_MASK | |
2245 | */ | |
995deafa | 2246 | if (is_ax(dd) && (reg & RXE_FREEZE_ABORT_MASK)) |
77241056 MM |
2247 | flags = FREEZE_ABORT; |
2248 | ||
2249 | start_freeze_handling(dd->pport, flags); | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | static void handle_misc_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2254 | { | |
2255 | char buf[96]; | |
2256 | ||
2257 | dd_dev_info(dd, "Misc Error: %s", | |
2258 | misc_err_status_string(buf, sizeof(buf), reg)); | |
2259 | } | |
2260 | ||
2261 | static void handle_pio_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2262 | { | |
2263 | char buf[96]; | |
2264 | ||
2265 | dd_dev_info(dd, "PIO Error: %s\n", | |
2266 | pio_err_status_string(buf, sizeof(buf), reg)); | |
2267 | ||
2268 | if (reg & ALL_PIO_FREEZE_ERR) | |
2269 | start_freeze_handling(dd->pport, 0); | |
2270 | } | |
2271 | ||
2272 | static void handle_sdma_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2273 | { | |
2274 | char buf[96]; | |
2275 | ||
2276 | dd_dev_info(dd, "SDMA Error: %s\n", | |
2277 | sdma_err_status_string(buf, sizeof(buf), reg)); | |
2278 | ||
2279 | if (reg & ALL_SDMA_FREEZE_ERR) | |
2280 | start_freeze_handling(dd->pport, 0); | |
2281 | } | |
2282 | ||
2283 | static void count_port_inactive(struct hfi1_devdata *dd) | |
2284 | { | |
2285 | struct hfi1_pportdata *ppd = dd->pport; | |
2286 | ||
2287 | if (ppd->port_xmit_discards < ~(u64)0) | |
2288 | ppd->port_xmit_discards++; | |
2289 | } | |
2290 | ||
2291 | /* | |
2292 | * We have had a "disallowed packet" error during egress. Determine the | |
2293 | * integrity check which failed, and update relevant error counter, etc. | |
2294 | * | |
2295 | * Note that the SEND_EGRESS_ERR_INFO register has only a single | |
2296 | * bit of state per integrity check, and so we can miss the reason for an | |
2297 | * egress error if more than one packet fails the same integrity check | |
2298 | * since we cleared the corresponding bit in SEND_EGRESS_ERR_INFO. | |
2299 | */ | |
2300 | static void handle_send_egress_err_info(struct hfi1_devdata *dd) | |
2301 | { | |
2302 | struct hfi1_pportdata *ppd = dd->pport; | |
2303 | u64 src = read_csr(dd, SEND_EGRESS_ERR_SOURCE); /* read first */ | |
2304 | u64 info = read_csr(dd, SEND_EGRESS_ERR_INFO); | |
2305 | char buf[96]; | |
2306 | ||
2307 | /* clear down all observed info as quickly as possible after read */ | |
2308 | write_csr(dd, SEND_EGRESS_ERR_INFO, info); | |
2309 | ||
2310 | dd_dev_info(dd, | |
2311 | "Egress Error Info: 0x%llx, %s Egress Error Src 0x%llx\n", | |
2312 | info, egress_err_info_string(buf, sizeof(buf), info), src); | |
2313 | ||
2314 | /* Eventually add other counters for each bit */ | |
2315 | ||
2316 | if (info & SEND_EGRESS_ERR_INFO_TOO_LONG_IB_PACKET_ERR_SMASK) { | |
2317 | if (ppd->port_xmit_discards < ~(u64)0) | |
2318 | ppd->port_xmit_discards++; | |
2319 | } | |
2320 | } | |
2321 | ||
2322 | /* | |
2323 | * Input value is a bit position within the SEND_EGRESS_ERR_STATUS | |
2324 | * register. Does it represent a 'port inactive' error? | |
2325 | */ | |
2326 | static inline int port_inactive_err(u64 posn) | |
2327 | { | |
2328 | return (posn >= SEES(TX_LINKDOWN) && | |
2329 | posn <= SEES(TX_INCORRECT_LINK_STATE)); | |
2330 | } | |
2331 | ||
2332 | /* | |
2333 | * Input value is a bit position within the SEND_EGRESS_ERR_STATUS | |
2334 | * register. Does it represent a 'disallowed packet' error? | |
2335 | */ | |
2336 | static inline int disallowed_pkt_err(u64 posn) | |
2337 | { | |
2338 | return (posn >= SEES(TX_SDMA0_DISALLOWED_PACKET) && | |
2339 | posn <= SEES(TX_SDMA15_DISALLOWED_PACKET)); | |
2340 | } | |
2341 | ||
2342 | static void handle_egress_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2343 | { | |
2344 | u64 reg_copy = reg, handled = 0; | |
2345 | char buf[96]; | |
2346 | ||
2347 | if (reg & ALL_TXE_EGRESS_FREEZE_ERR) | |
2348 | start_freeze_handling(dd->pport, 0); | |
995deafa | 2349 | if (is_ax(dd) && (reg & |
77241056 MM |
2350 | SEND_EGRESS_ERR_STATUS_TX_CREDIT_RETURN_VL_ERR_SMASK) |
2351 | && (dd->icode != ICODE_FUNCTIONAL_SIMULATOR)) | |
2352 | start_freeze_handling(dd->pport, 0); | |
2353 | ||
2354 | while (reg_copy) { | |
2355 | int posn = fls64(reg_copy); | |
2356 | /* | |
2357 | * fls64() returns a 1-based offset, but we generally | |
2358 | * want 0-based offsets. | |
2359 | */ | |
2360 | int shift = posn - 1; | |
2361 | ||
2362 | if (port_inactive_err(shift)) { | |
2363 | count_port_inactive(dd); | |
2364 | handled |= (1ULL << shift); | |
2365 | } else if (disallowed_pkt_err(shift)) { | |
2366 | handle_send_egress_err_info(dd); | |
2367 | handled |= (1ULL << shift); | |
2368 | } | |
2369 | clear_bit(shift, (unsigned long *)®_copy); | |
2370 | } | |
2371 | ||
2372 | reg &= ~handled; | |
2373 | ||
2374 | if (reg) | |
2375 | dd_dev_info(dd, "Egress Error: %s\n", | |
2376 | egress_err_status_string(buf, sizeof(buf), reg)); | |
2377 | } | |
2378 | ||
2379 | static void handle_txe_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
2380 | { | |
2381 | char buf[96]; | |
2382 | ||
2383 | dd_dev_info(dd, "Send Error: %s\n", | |
2384 | send_err_status_string(buf, sizeof(buf), reg)); | |
2385 | ||
2386 | } | |
2387 | ||
2388 | /* | |
2389 | * The maximum number of times the error clear down will loop before | |
2390 | * blocking a repeating error. This value is arbitrary. | |
2391 | */ | |
2392 | #define MAX_CLEAR_COUNT 20 | |
2393 | ||
2394 | /* | |
2395 | * Clear and handle an error register. All error interrupts are funneled | |
2396 | * through here to have a central location to correctly handle single- | |
2397 | * or multi-shot errors. | |
2398 | * | |
2399 | * For non per-context registers, call this routine with a context value | |
2400 | * of 0 so the per-context offset is zero. | |
2401 | * | |
2402 | * If the handler loops too many times, assume that something is wrong | |
2403 | * and can't be fixed, so mask the error bits. | |
2404 | */ | |
2405 | static void interrupt_clear_down(struct hfi1_devdata *dd, | |
2406 | u32 context, | |
2407 | const struct err_reg_info *eri) | |
2408 | { | |
2409 | u64 reg; | |
2410 | u32 count; | |
2411 | ||
2412 | /* read in a loop until no more errors are seen */ | |
2413 | count = 0; | |
2414 | while (1) { | |
2415 | reg = read_kctxt_csr(dd, context, eri->status); | |
2416 | if (reg == 0) | |
2417 | break; | |
2418 | write_kctxt_csr(dd, context, eri->clear, reg); | |
2419 | if (likely(eri->handler)) | |
2420 | eri->handler(dd, context, reg); | |
2421 | count++; | |
2422 | if (count > MAX_CLEAR_COUNT) { | |
2423 | u64 mask; | |
2424 | ||
2425 | dd_dev_err(dd, "Repeating %s bits 0x%llx - masking\n", | |
2426 | eri->desc, reg); | |
2427 | /* | |
2428 | * Read-modify-write so any other masked bits | |
2429 | * remain masked. | |
2430 | */ | |
2431 | mask = read_kctxt_csr(dd, context, eri->mask); | |
2432 | mask &= ~reg; | |
2433 | write_kctxt_csr(dd, context, eri->mask, mask); | |
2434 | break; | |
2435 | } | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | /* | |
2440 | * CCE block "misc" interrupt. Source is < 16. | |
2441 | */ | |
2442 | static void is_misc_err_int(struct hfi1_devdata *dd, unsigned int source) | |
2443 | { | |
2444 | const struct err_reg_info *eri = &misc_errs[source]; | |
2445 | ||
2446 | if (eri->handler) { | |
2447 | interrupt_clear_down(dd, 0, eri); | |
2448 | } else { | |
2449 | dd_dev_err(dd, "Unexpected misc interrupt (%u) - reserved\n", | |
2450 | source); | |
2451 | } | |
2452 | } | |
2453 | ||
2454 | static char *send_context_err_status_string(char *buf, int buf_len, u64 flags) | |
2455 | { | |
2456 | return flag_string(buf, buf_len, flags, | |
2457 | sc_err_status_flags, ARRAY_SIZE(sc_err_status_flags)); | |
2458 | } | |
2459 | ||
2460 | /* | |
2461 | * Send context error interrupt. Source (hw_context) is < 160. | |
2462 | * | |
2463 | * All send context errors cause the send context to halt. The normal | |
2464 | * clear-down mechanism cannot be used because we cannot clear the | |
2465 | * error bits until several other long-running items are done first. | |
2466 | * This is OK because with the context halted, nothing else is going | |
2467 | * to happen on it anyway. | |
2468 | */ | |
2469 | static void is_sendctxt_err_int(struct hfi1_devdata *dd, | |
2470 | unsigned int hw_context) | |
2471 | { | |
2472 | struct send_context_info *sci; | |
2473 | struct send_context *sc; | |
2474 | char flags[96]; | |
2475 | u64 status; | |
2476 | u32 sw_index; | |
2477 | ||
2478 | sw_index = dd->hw_to_sw[hw_context]; | |
2479 | if (sw_index >= dd->num_send_contexts) { | |
2480 | dd_dev_err(dd, | |
2481 | "out of range sw index %u for send context %u\n", | |
2482 | sw_index, hw_context); | |
2483 | return; | |
2484 | } | |
2485 | sci = &dd->send_contexts[sw_index]; | |
2486 | sc = sci->sc; | |
2487 | if (!sc) { | |
2488 | dd_dev_err(dd, "%s: context %u(%u): no sc?\n", __func__, | |
2489 | sw_index, hw_context); | |
2490 | return; | |
2491 | } | |
2492 | ||
2493 | /* tell the software that a halt has begun */ | |
2494 | sc_stop(sc, SCF_HALTED); | |
2495 | ||
2496 | status = read_kctxt_csr(dd, hw_context, SEND_CTXT_ERR_STATUS); | |
2497 | ||
2498 | dd_dev_info(dd, "Send Context %u(%u) Error: %s\n", sw_index, hw_context, | |
2499 | send_context_err_status_string(flags, sizeof(flags), status)); | |
2500 | ||
2501 | if (status & SEND_CTXT_ERR_STATUS_PIO_DISALLOWED_PACKET_ERR_SMASK) | |
2502 | handle_send_egress_err_info(dd); | |
2503 | ||
2504 | /* | |
2505 | * Automatically restart halted kernel contexts out of interrupt | |
2506 | * context. User contexts must ask the driver to restart the context. | |
2507 | */ | |
2508 | if (sc->type != SC_USER) | |
2509 | queue_work(dd->pport->hfi1_wq, &sc->halt_work); | |
2510 | } | |
2511 | ||
2512 | static void handle_sdma_eng_err(struct hfi1_devdata *dd, | |
2513 | unsigned int source, u64 status) | |
2514 | { | |
2515 | struct sdma_engine *sde; | |
2516 | ||
2517 | sde = &dd->per_sdma[source]; | |
2518 | #ifdef CONFIG_SDMA_VERBOSITY | |
2519 | dd_dev_err(sde->dd, "CONFIG SDMA(%u) %s:%d %s()\n", sde->this_idx, | |
2520 | slashstrip(__FILE__), __LINE__, __func__); | |
2521 | dd_dev_err(sde->dd, "CONFIG SDMA(%u) source: %u status 0x%llx\n", | |
2522 | sde->this_idx, source, (unsigned long long)status); | |
2523 | #endif | |
2524 | sdma_engine_error(sde, status); | |
2525 | } | |
2526 | ||
2527 | /* | |
2528 | * CCE block SDMA error interrupt. Source is < 16. | |
2529 | */ | |
2530 | static void is_sdma_eng_err_int(struct hfi1_devdata *dd, unsigned int source) | |
2531 | { | |
2532 | #ifdef CONFIG_SDMA_VERBOSITY | |
2533 | struct sdma_engine *sde = &dd->per_sdma[source]; | |
2534 | ||
2535 | dd_dev_err(dd, "CONFIG SDMA(%u) %s:%d %s()\n", sde->this_idx, | |
2536 | slashstrip(__FILE__), __LINE__, __func__); | |
2537 | dd_dev_err(dd, "CONFIG SDMA(%u) source: %u\n", sde->this_idx, | |
2538 | source); | |
2539 | sdma_dumpstate(sde); | |
2540 | #endif | |
2541 | interrupt_clear_down(dd, source, &sdma_eng_err); | |
2542 | } | |
2543 | ||
2544 | /* | |
2545 | * CCE block "various" interrupt. Source is < 8. | |
2546 | */ | |
2547 | static void is_various_int(struct hfi1_devdata *dd, unsigned int source) | |
2548 | { | |
2549 | const struct err_reg_info *eri = &various_err[source]; | |
2550 | ||
2551 | /* | |
2552 | * TCritInt cannot go through interrupt_clear_down() | |
2553 | * because it is not a second tier interrupt. The handler | |
2554 | * should be called directly. | |
2555 | */ | |
2556 | if (source == TCRIT_INT_SOURCE) | |
2557 | handle_temp_err(dd); | |
2558 | else if (eri->handler) | |
2559 | interrupt_clear_down(dd, 0, eri); | |
2560 | else | |
2561 | dd_dev_info(dd, | |
2562 | "%s: Unimplemented/reserved interrupt %d\n", | |
2563 | __func__, source); | |
2564 | } | |
2565 | ||
2566 | static void handle_qsfp_int(struct hfi1_devdata *dd, u32 src_ctx, u64 reg) | |
2567 | { | |
2568 | /* source is always zero */ | |
2569 | struct hfi1_pportdata *ppd = dd->pport; | |
2570 | unsigned long flags; | |
2571 | u64 qsfp_int_mgmt = (u64)(QSFP_HFI0_INT_N | QSFP_HFI0_MODPRST_N); | |
2572 | ||
2573 | if (reg & QSFP_HFI0_MODPRST_N) { | |
2574 | ||
2575 | dd_dev_info(dd, "%s: ModPresent triggered QSFP interrupt\n", | |
2576 | __func__); | |
2577 | ||
2578 | if (!qsfp_mod_present(ppd)) { | |
2579 | ppd->driver_link_ready = 0; | |
2580 | /* | |
2581 | * Cable removed, reset all our information about the | |
2582 | * cache and cable capabilities | |
2583 | */ | |
2584 | ||
2585 | spin_lock_irqsave(&ppd->qsfp_info.qsfp_lock, flags); | |
2586 | /* | |
2587 | * We don't set cache_refresh_required here as we expect | |
2588 | * an interrupt when a cable is inserted | |
2589 | */ | |
2590 | ppd->qsfp_info.cache_valid = 0; | |
2591 | ppd->qsfp_info.qsfp_interrupt_functional = 0; | |
2592 | spin_unlock_irqrestore(&ppd->qsfp_info.qsfp_lock, | |
2593 | flags); | |
2594 | write_csr(dd, | |
2595 | dd->hfi1_id ? | |
2596 | ASIC_QSFP2_INVERT : | |
2597 | ASIC_QSFP1_INVERT, | |
2598 | qsfp_int_mgmt); | |
2599 | if (ppd->host_link_state == HLS_DN_POLL) { | |
2600 | /* | |
2601 | * The link is still in POLL. This means | |
2602 | * that the normal link down processing | |
2603 | * will not happen. We have to do it here | |
2604 | * before turning the DC off. | |
2605 | */ | |
2606 | queue_work(ppd->hfi1_wq, &ppd->link_down_work); | |
2607 | } | |
2608 | } else { | |
2609 | spin_lock_irqsave(&ppd->qsfp_info.qsfp_lock, flags); | |
2610 | ppd->qsfp_info.cache_valid = 0; | |
2611 | ppd->qsfp_info.cache_refresh_required = 1; | |
2612 | spin_unlock_irqrestore(&ppd->qsfp_info.qsfp_lock, | |
2613 | flags); | |
2614 | ||
2615 | qsfp_int_mgmt &= ~(u64)QSFP_HFI0_MODPRST_N; | |
2616 | write_csr(dd, | |
2617 | dd->hfi1_id ? | |
2618 | ASIC_QSFP2_INVERT : | |
2619 | ASIC_QSFP1_INVERT, | |
2620 | qsfp_int_mgmt); | |
2621 | } | |
2622 | } | |
2623 | ||
2624 | if (reg & QSFP_HFI0_INT_N) { | |
2625 | ||
2626 | dd_dev_info(dd, "%s: IntN triggered QSFP interrupt\n", | |
2627 | __func__); | |
2628 | spin_lock_irqsave(&ppd->qsfp_info.qsfp_lock, flags); | |
2629 | ppd->qsfp_info.check_interrupt_flags = 1; | |
2630 | ppd->qsfp_info.qsfp_interrupt_functional = 1; | |
2631 | spin_unlock_irqrestore(&ppd->qsfp_info.qsfp_lock, flags); | |
2632 | } | |
2633 | ||
2634 | /* Schedule the QSFP work only if there is a cable attached. */ | |
2635 | if (qsfp_mod_present(ppd)) | |
2636 | queue_work(ppd->hfi1_wq, &ppd->qsfp_info.qsfp_work); | |
2637 | } | |
2638 | ||
2639 | static int request_host_lcb_access(struct hfi1_devdata *dd) | |
2640 | { | |
2641 | int ret; | |
2642 | ||
2643 | ret = do_8051_command(dd, HCMD_MISC, | |
2644 | (u64)HCMD_MISC_REQUEST_LCB_ACCESS << LOAD_DATA_FIELD_ID_SHIFT, | |
2645 | NULL); | |
2646 | if (ret != HCMD_SUCCESS) { | |
2647 | dd_dev_err(dd, "%s: command failed with error %d\n", | |
2648 | __func__, ret); | |
2649 | } | |
2650 | return ret == HCMD_SUCCESS ? 0 : -EBUSY; | |
2651 | } | |
2652 | ||
2653 | static int request_8051_lcb_access(struct hfi1_devdata *dd) | |
2654 | { | |
2655 | int ret; | |
2656 | ||
2657 | ret = do_8051_command(dd, HCMD_MISC, | |
2658 | (u64)HCMD_MISC_GRANT_LCB_ACCESS << LOAD_DATA_FIELD_ID_SHIFT, | |
2659 | NULL); | |
2660 | if (ret != HCMD_SUCCESS) { | |
2661 | dd_dev_err(dd, "%s: command failed with error %d\n", | |
2662 | __func__, ret); | |
2663 | } | |
2664 | return ret == HCMD_SUCCESS ? 0 : -EBUSY; | |
2665 | } | |
2666 | ||
2667 | /* | |
2668 | * Set the LCB selector - allow host access. The DCC selector always | |
2669 | * points to the host. | |
2670 | */ | |
2671 | static inline void set_host_lcb_access(struct hfi1_devdata *dd) | |
2672 | { | |
2673 | write_csr(dd, DC_DC8051_CFG_CSR_ACCESS_SEL, | |
2674 | DC_DC8051_CFG_CSR_ACCESS_SEL_DCC_SMASK | |
2675 | | DC_DC8051_CFG_CSR_ACCESS_SEL_LCB_SMASK); | |
2676 | } | |
2677 | ||
2678 | /* | |
2679 | * Clear the LCB selector - allow 8051 access. The DCC selector always | |
2680 | * points to the host. | |
2681 | */ | |
2682 | static inline void set_8051_lcb_access(struct hfi1_devdata *dd) | |
2683 | { | |
2684 | write_csr(dd, DC_DC8051_CFG_CSR_ACCESS_SEL, | |
2685 | DC_DC8051_CFG_CSR_ACCESS_SEL_DCC_SMASK); | |
2686 | } | |
2687 | ||
2688 | /* | |
2689 | * Acquire LCB access from the 8051. If the host already has access, | |
2690 | * just increment a counter. Otherwise, inform the 8051 that the | |
2691 | * host is taking access. | |
2692 | * | |
2693 | * Returns: | |
2694 | * 0 on success | |
2695 | * -EBUSY if the 8051 has control and cannot be disturbed | |
2696 | * -errno if unable to acquire access from the 8051 | |
2697 | */ | |
2698 | int acquire_lcb_access(struct hfi1_devdata *dd, int sleep_ok) | |
2699 | { | |
2700 | struct hfi1_pportdata *ppd = dd->pport; | |
2701 | int ret = 0; | |
2702 | ||
2703 | /* | |
2704 | * Use the host link state lock so the operation of this routine | |
2705 | * { link state check, selector change, count increment } can occur | |
2706 | * as a unit against a link state change. Otherwise there is a | |
2707 | * race between the state change and the count increment. | |
2708 | */ | |
2709 | if (sleep_ok) { | |
2710 | mutex_lock(&ppd->hls_lock); | |
2711 | } else { | |
951842b0 | 2712 | while (!mutex_trylock(&ppd->hls_lock)) |
77241056 MM |
2713 | udelay(1); |
2714 | } | |
2715 | ||
2716 | /* this access is valid only when the link is up */ | |
2717 | if ((ppd->host_link_state & HLS_UP) == 0) { | |
2718 | dd_dev_info(dd, "%s: link state %s not up\n", | |
2719 | __func__, link_state_name(ppd->host_link_state)); | |
2720 | ret = -EBUSY; | |
2721 | goto done; | |
2722 | } | |
2723 | ||
2724 | if (dd->lcb_access_count == 0) { | |
2725 | ret = request_host_lcb_access(dd); | |
2726 | if (ret) { | |
2727 | dd_dev_err(dd, | |
2728 | "%s: unable to acquire LCB access, err %d\n", | |
2729 | __func__, ret); | |
2730 | goto done; | |
2731 | } | |
2732 | set_host_lcb_access(dd); | |
2733 | } | |
2734 | dd->lcb_access_count++; | |
2735 | done: | |
2736 | mutex_unlock(&ppd->hls_lock); | |
2737 | return ret; | |
2738 | } | |
2739 | ||
2740 | /* | |
2741 | * Release LCB access by decrementing the use count. If the count is moving | |
2742 | * from 1 to 0, inform 8051 that it has control back. | |
2743 | * | |
2744 | * Returns: | |
2745 | * 0 on success | |
2746 | * -errno if unable to release access to the 8051 | |
2747 | */ | |
2748 | int release_lcb_access(struct hfi1_devdata *dd, int sleep_ok) | |
2749 | { | |
2750 | int ret = 0; | |
2751 | ||
2752 | /* | |
2753 | * Use the host link state lock because the acquire needed it. | |
2754 | * Here, we only need to keep { selector change, count decrement } | |
2755 | * as a unit. | |
2756 | */ | |
2757 | if (sleep_ok) { | |
2758 | mutex_lock(&dd->pport->hls_lock); | |
2759 | } else { | |
951842b0 | 2760 | while (!mutex_trylock(&dd->pport->hls_lock)) |
77241056 MM |
2761 | udelay(1); |
2762 | } | |
2763 | ||
2764 | if (dd->lcb_access_count == 0) { | |
2765 | dd_dev_err(dd, "%s: LCB access count is zero. Skipping.\n", | |
2766 | __func__); | |
2767 | goto done; | |
2768 | } | |
2769 | ||
2770 | if (dd->lcb_access_count == 1) { | |
2771 | set_8051_lcb_access(dd); | |
2772 | ret = request_8051_lcb_access(dd); | |
2773 | if (ret) { | |
2774 | dd_dev_err(dd, | |
2775 | "%s: unable to release LCB access, err %d\n", | |
2776 | __func__, ret); | |
2777 | /* restore host access if the grant didn't work */ | |
2778 | set_host_lcb_access(dd); | |
2779 | goto done; | |
2780 | } | |
2781 | } | |
2782 | dd->lcb_access_count--; | |
2783 | done: | |
2784 | mutex_unlock(&dd->pport->hls_lock); | |
2785 | return ret; | |
2786 | } | |
2787 | ||
2788 | /* | |
2789 | * Initialize LCB access variables and state. Called during driver load, | |
2790 | * after most of the initialization is finished. | |
2791 | * | |
2792 | * The DC default is LCB access on for the host. The driver defaults to | |
2793 | * leaving access to the 8051. Assign access now - this constrains the call | |
2794 | * to this routine to be after all LCB set-up is done. In particular, after | |
2795 | * hf1_init_dd() -> set_up_interrupts() -> clear_all_interrupts() | |
2796 | */ | |
2797 | static void init_lcb_access(struct hfi1_devdata *dd) | |
2798 | { | |
2799 | dd->lcb_access_count = 0; | |
2800 | } | |
2801 | ||
2802 | /* | |
2803 | * Write a response back to a 8051 request. | |
2804 | */ | |
2805 | static void hreq_response(struct hfi1_devdata *dd, u8 return_code, u16 rsp_data) | |
2806 | { | |
2807 | write_csr(dd, DC_DC8051_CFG_EXT_DEV_0, | |
2808 | DC_DC8051_CFG_EXT_DEV_0_COMPLETED_SMASK | |
2809 | | (u64)return_code << DC_DC8051_CFG_EXT_DEV_0_RETURN_CODE_SHIFT | |
2810 | | (u64)rsp_data << DC_DC8051_CFG_EXT_DEV_0_RSP_DATA_SHIFT); | |
2811 | } | |
2812 | ||
2813 | /* | |
2814 | * Handle requests from the 8051. | |
2815 | */ | |
2816 | static void handle_8051_request(struct hfi1_devdata *dd) | |
2817 | { | |
2818 | u64 reg; | |
2819 | u16 data; | |
2820 | u8 type; | |
2821 | ||
2822 | reg = read_csr(dd, DC_DC8051_CFG_EXT_DEV_1); | |
2823 | if ((reg & DC_DC8051_CFG_EXT_DEV_1_REQ_NEW_SMASK) == 0) | |
2824 | return; /* no request */ | |
2825 | ||
2826 | /* zero out COMPLETED so the response is seen */ | |
2827 | write_csr(dd, DC_DC8051_CFG_EXT_DEV_0, 0); | |
2828 | ||
2829 | /* extract request details */ | |
2830 | type = (reg >> DC_DC8051_CFG_EXT_DEV_1_REQ_TYPE_SHIFT) | |
2831 | & DC_DC8051_CFG_EXT_DEV_1_REQ_TYPE_MASK; | |
2832 | data = (reg >> DC_DC8051_CFG_EXT_DEV_1_REQ_DATA_SHIFT) | |
2833 | & DC_DC8051_CFG_EXT_DEV_1_REQ_DATA_MASK; | |
2834 | ||
2835 | switch (type) { | |
2836 | case HREQ_LOAD_CONFIG: | |
2837 | case HREQ_SAVE_CONFIG: | |
2838 | case HREQ_READ_CONFIG: | |
2839 | case HREQ_SET_TX_EQ_ABS: | |
2840 | case HREQ_SET_TX_EQ_REL: | |
2841 | case HREQ_ENABLE: | |
2842 | dd_dev_info(dd, "8051 request: request 0x%x not supported\n", | |
2843 | type); | |
2844 | hreq_response(dd, HREQ_NOT_SUPPORTED, 0); | |
2845 | break; | |
2846 | ||
2847 | case HREQ_CONFIG_DONE: | |
2848 | hreq_response(dd, HREQ_SUCCESS, 0); | |
2849 | break; | |
2850 | ||
2851 | case HREQ_INTERFACE_TEST: | |
2852 | hreq_response(dd, HREQ_SUCCESS, data); | |
2853 | break; | |
2854 | ||
2855 | default: | |
2856 | dd_dev_err(dd, "8051 request: unknown request 0x%x\n", type); | |
2857 | hreq_response(dd, HREQ_NOT_SUPPORTED, 0); | |
2858 | break; | |
2859 | } | |
2860 | } | |
2861 | ||
2862 | static void write_global_credit(struct hfi1_devdata *dd, | |
2863 | u8 vau, u16 total, u16 shared) | |
2864 | { | |
2865 | write_csr(dd, SEND_CM_GLOBAL_CREDIT, | |
2866 | ((u64)total | |
2867 | << SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT) | |
2868 | | ((u64)shared | |
2869 | << SEND_CM_GLOBAL_CREDIT_SHARED_LIMIT_SHIFT) | |
2870 | | ((u64)vau << SEND_CM_GLOBAL_CREDIT_AU_SHIFT)); | |
2871 | } | |
2872 | ||
2873 | /* | |
2874 | * Set up initial VL15 credits of the remote. Assumes the rest of | |
2875 | * the CM credit registers are zero from a previous global or credit reset . | |
2876 | */ | |
2877 | void set_up_vl15(struct hfi1_devdata *dd, u8 vau, u16 vl15buf) | |
2878 | { | |
2879 | /* leave shared count at zero for both global and VL15 */ | |
2880 | write_global_credit(dd, vau, vl15buf, 0); | |
2881 | ||
2882 | /* We may need some credits for another VL when sending packets | |
2883 | * with the snoop interface. Dividing it down the middle for VL15 | |
2884 | * and VL0 should suffice. | |
2885 | */ | |
2886 | if (unlikely(dd->hfi1_snoop.mode_flag == HFI1_PORT_SNOOP_MODE)) { | |
2887 | write_csr(dd, SEND_CM_CREDIT_VL15, (u64)(vl15buf >> 1) | |
2888 | << SEND_CM_CREDIT_VL15_DEDICATED_LIMIT_VL_SHIFT); | |
2889 | write_csr(dd, SEND_CM_CREDIT_VL, (u64)(vl15buf >> 1) | |
2890 | << SEND_CM_CREDIT_VL_DEDICATED_LIMIT_VL_SHIFT); | |
2891 | } else { | |
2892 | write_csr(dd, SEND_CM_CREDIT_VL15, (u64)vl15buf | |
2893 | << SEND_CM_CREDIT_VL15_DEDICATED_LIMIT_VL_SHIFT); | |
2894 | } | |
2895 | } | |
2896 | ||
2897 | /* | |
2898 | * Zero all credit details from the previous connection and | |
2899 | * reset the CM manager's internal counters. | |
2900 | */ | |
2901 | void reset_link_credits(struct hfi1_devdata *dd) | |
2902 | { | |
2903 | int i; | |
2904 | ||
2905 | /* remove all previous VL credit limits */ | |
2906 | for (i = 0; i < TXE_NUM_DATA_VL; i++) | |
2907 | write_csr(dd, SEND_CM_CREDIT_VL + (8*i), 0); | |
2908 | write_csr(dd, SEND_CM_CREDIT_VL15, 0); | |
2909 | write_global_credit(dd, 0, 0, 0); | |
2910 | /* reset the CM block */ | |
2911 | pio_send_control(dd, PSC_CM_RESET); | |
2912 | } | |
2913 | ||
2914 | /* convert a vCU to a CU */ | |
2915 | static u32 vcu_to_cu(u8 vcu) | |
2916 | { | |
2917 | return 1 << vcu; | |
2918 | } | |
2919 | ||
2920 | /* convert a CU to a vCU */ | |
2921 | static u8 cu_to_vcu(u32 cu) | |
2922 | { | |
2923 | return ilog2(cu); | |
2924 | } | |
2925 | ||
2926 | /* convert a vAU to an AU */ | |
2927 | static u32 vau_to_au(u8 vau) | |
2928 | { | |
2929 | return 8 * (1 << vau); | |
2930 | } | |
2931 | ||
2932 | static void set_linkup_defaults(struct hfi1_pportdata *ppd) | |
2933 | { | |
2934 | ppd->sm_trap_qp = 0x0; | |
2935 | ppd->sa_qp = 0x1; | |
2936 | } | |
2937 | ||
2938 | /* | |
2939 | * Graceful LCB shutdown. This leaves the LCB FIFOs in reset. | |
2940 | */ | |
2941 | static void lcb_shutdown(struct hfi1_devdata *dd, int abort) | |
2942 | { | |
2943 | u64 reg; | |
2944 | ||
2945 | /* clear lcb run: LCB_CFG_RUN.EN = 0 */ | |
2946 | write_csr(dd, DC_LCB_CFG_RUN, 0); | |
2947 | /* set tx fifo reset: LCB_CFG_TX_FIFOS_RESET.VAL = 1 */ | |
2948 | write_csr(dd, DC_LCB_CFG_TX_FIFOS_RESET, | |
2949 | 1ull << DC_LCB_CFG_TX_FIFOS_RESET_VAL_SHIFT); | |
2950 | /* set dcc reset csr: DCC_CFG_RESET.{reset_lcb,reset_rx_fpe} = 1 */ | |
2951 | dd->lcb_err_en = read_csr(dd, DC_LCB_ERR_EN); | |
2952 | reg = read_csr(dd, DCC_CFG_RESET); | |
2953 | write_csr(dd, DCC_CFG_RESET, | |
2954 | reg | |
2955 | | (1ull << DCC_CFG_RESET_RESET_LCB_SHIFT) | |
2956 | | (1ull << DCC_CFG_RESET_RESET_RX_FPE_SHIFT)); | |
2957 | (void) read_csr(dd, DCC_CFG_RESET); /* make sure the write completed */ | |
2958 | if (!abort) { | |
2959 | udelay(1); /* must hold for the longer of 16cclks or 20ns */ | |
2960 | write_csr(dd, DCC_CFG_RESET, reg); | |
2961 | write_csr(dd, DC_LCB_ERR_EN, dd->lcb_err_en); | |
2962 | } | |
2963 | } | |
2964 | ||
2965 | /* | |
2966 | * This routine should be called after the link has been transitioned to | |
2967 | * OFFLINE (OFFLINE state has the side effect of putting the SerDes into | |
2968 | * reset). | |
2969 | * | |
2970 | * The expectation is that the caller of this routine would have taken | |
2971 | * care of properly transitioning the link into the correct state. | |
2972 | */ | |
2973 | static void dc_shutdown(struct hfi1_devdata *dd) | |
2974 | { | |
2975 | unsigned long flags; | |
2976 | ||
2977 | spin_lock_irqsave(&dd->dc8051_lock, flags); | |
2978 | if (dd->dc_shutdown) { | |
2979 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
2980 | return; | |
2981 | } | |
2982 | dd->dc_shutdown = 1; | |
2983 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
2984 | /* Shutdown the LCB */ | |
2985 | lcb_shutdown(dd, 1); | |
2986 | /* Going to OFFLINE would have causes the 8051 to put the | |
2987 | * SerDes into reset already. Just need to shut down the 8051, | |
2988 | * itself. */ | |
2989 | write_csr(dd, DC_DC8051_CFG_RST, 0x1); | |
2990 | } | |
2991 | ||
2992 | /* Calling this after the DC has been brought out of reset should not | |
2993 | * do any damage. */ | |
2994 | static void dc_start(struct hfi1_devdata *dd) | |
2995 | { | |
2996 | unsigned long flags; | |
2997 | int ret; | |
2998 | ||
2999 | spin_lock_irqsave(&dd->dc8051_lock, flags); | |
3000 | if (!dd->dc_shutdown) | |
3001 | goto done; | |
3002 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
3003 | /* Take the 8051 out of reset */ | |
3004 | write_csr(dd, DC_DC8051_CFG_RST, 0ull); | |
3005 | /* Wait until 8051 is ready */ | |
3006 | ret = wait_fm_ready(dd, TIMEOUT_8051_START); | |
3007 | if (ret) { | |
3008 | dd_dev_err(dd, "%s: timeout starting 8051 firmware\n", | |
3009 | __func__); | |
3010 | } | |
3011 | /* Take away reset for LCB and RX FPE (set in lcb_shutdown). */ | |
3012 | write_csr(dd, DCC_CFG_RESET, 0x10); | |
3013 | /* lcb_shutdown() with abort=1 does not restore these */ | |
3014 | write_csr(dd, DC_LCB_ERR_EN, dd->lcb_err_en); | |
3015 | spin_lock_irqsave(&dd->dc8051_lock, flags); | |
3016 | dd->dc_shutdown = 0; | |
3017 | done: | |
3018 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
3019 | } | |
3020 | ||
3021 | /* | |
3022 | * These LCB adjustments are for the Aurora SerDes core in the FPGA. | |
3023 | */ | |
3024 | static void adjust_lcb_for_fpga_serdes(struct hfi1_devdata *dd) | |
3025 | { | |
3026 | u64 rx_radr, tx_radr; | |
3027 | u32 version; | |
3028 | ||
3029 | if (dd->icode != ICODE_FPGA_EMULATION) | |
3030 | return; | |
3031 | ||
3032 | /* | |
3033 | * These LCB defaults on emulator _s are good, nothing to do here: | |
3034 | * LCB_CFG_TX_FIFOS_RADR | |
3035 | * LCB_CFG_RX_FIFOS_RADR | |
3036 | * LCB_CFG_LN_DCLK | |
3037 | * LCB_CFG_IGNORE_LOST_RCLK | |
3038 | */ | |
3039 | if (is_emulator_s(dd)) | |
3040 | return; | |
3041 | /* else this is _p */ | |
3042 | ||
3043 | version = emulator_rev(dd); | |
995deafa | 3044 | if (!is_ax(dd)) |
77241056 MM |
3045 | version = 0x2d; /* all B0 use 0x2d or higher settings */ |
3046 | ||
3047 | if (version <= 0x12) { | |
3048 | /* release 0x12 and below */ | |
3049 | ||
3050 | /* | |
3051 | * LCB_CFG_RX_FIFOS_RADR.RST_VAL = 0x9 | |
3052 | * LCB_CFG_RX_FIFOS_RADR.OK_TO_JUMP_VAL = 0x9 | |
3053 | * LCB_CFG_RX_FIFOS_RADR.DO_NOT_JUMP_VAL = 0xa | |
3054 | */ | |
3055 | rx_radr = | |
3056 | 0xaull << DC_LCB_CFG_RX_FIFOS_RADR_DO_NOT_JUMP_VAL_SHIFT | |
3057 | | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_OK_TO_JUMP_VAL_SHIFT | |
3058 | | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_RST_VAL_SHIFT; | |
3059 | /* | |
3060 | * LCB_CFG_TX_FIFOS_RADR.ON_REINIT = 0 (default) | |
3061 | * LCB_CFG_TX_FIFOS_RADR.RST_VAL = 6 | |
3062 | */ | |
3063 | tx_radr = 6ull << DC_LCB_CFG_TX_FIFOS_RADR_RST_VAL_SHIFT; | |
3064 | } else if (version <= 0x18) { | |
3065 | /* release 0x13 up to 0x18 */ | |
3066 | /* LCB_CFG_RX_FIFOS_RADR = 0x988 */ | |
3067 | rx_radr = | |
3068 | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_DO_NOT_JUMP_VAL_SHIFT | |
3069 | | 0x8ull << DC_LCB_CFG_RX_FIFOS_RADR_OK_TO_JUMP_VAL_SHIFT | |
3070 | | 0x8ull << DC_LCB_CFG_RX_FIFOS_RADR_RST_VAL_SHIFT; | |
3071 | tx_radr = 7ull << DC_LCB_CFG_TX_FIFOS_RADR_RST_VAL_SHIFT; | |
3072 | } else if (version == 0x19) { | |
3073 | /* release 0x19 */ | |
3074 | /* LCB_CFG_RX_FIFOS_RADR = 0xa99 */ | |
3075 | rx_radr = | |
3076 | 0xAull << DC_LCB_CFG_RX_FIFOS_RADR_DO_NOT_JUMP_VAL_SHIFT | |
3077 | | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_OK_TO_JUMP_VAL_SHIFT | |
3078 | | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_RST_VAL_SHIFT; | |
3079 | tx_radr = 3ull << DC_LCB_CFG_TX_FIFOS_RADR_RST_VAL_SHIFT; | |
3080 | } else if (version == 0x1a) { | |
3081 | /* release 0x1a */ | |
3082 | /* LCB_CFG_RX_FIFOS_RADR = 0x988 */ | |
3083 | rx_radr = | |
3084 | 0x9ull << DC_LCB_CFG_RX_FIFOS_RADR_DO_NOT_JUMP_VAL_SHIFT | |
3085 | | 0x8ull << DC_LCB_CFG_RX_FIFOS_RADR_OK_TO_JUMP_VAL_SHIFT | |
3086 | | 0x8ull << DC_LCB_CFG_RX_FIFOS_RADR_RST_VAL_SHIFT; | |
3087 | tx_radr = 7ull << DC_LCB_CFG_TX_FIFOS_RADR_RST_VAL_SHIFT; | |
3088 | write_csr(dd, DC_LCB_CFG_LN_DCLK, 1ull); | |
3089 | } else { | |
3090 | /* release 0x1b and higher */ | |
3091 | /* LCB_CFG_RX_FIFOS_RADR = 0x877 */ | |
3092 | rx_radr = | |
3093 | 0x8ull << DC_LCB_CFG_RX_FIFOS_RADR_DO_NOT_JUMP_VAL_SHIFT | |
3094 | | 0x7ull << DC_LCB_CFG_RX_FIFOS_RADR_OK_TO_JUMP_VAL_SHIFT | |
3095 | | 0x7ull << DC_LCB_CFG_RX_FIFOS_RADR_RST_VAL_SHIFT; | |
3096 | tx_radr = 3ull << DC_LCB_CFG_TX_FIFOS_RADR_RST_VAL_SHIFT; | |
3097 | } | |
3098 | ||
3099 | write_csr(dd, DC_LCB_CFG_RX_FIFOS_RADR, rx_radr); | |
3100 | /* LCB_CFG_IGNORE_LOST_RCLK.EN = 1 */ | |
3101 | write_csr(dd, DC_LCB_CFG_IGNORE_LOST_RCLK, | |
3102 | DC_LCB_CFG_IGNORE_LOST_RCLK_EN_SMASK); | |
3103 | write_csr(dd, DC_LCB_CFG_TX_FIFOS_RADR, tx_radr); | |
3104 | } | |
3105 | ||
3106 | /* | |
3107 | * Handle a SMA idle message | |
3108 | * | |
3109 | * This is a work-queue function outside of the interrupt. | |
3110 | */ | |
3111 | void handle_sma_message(struct work_struct *work) | |
3112 | { | |
3113 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3114 | sma_message_work); | |
3115 | struct hfi1_devdata *dd = ppd->dd; | |
3116 | u64 msg; | |
3117 | int ret; | |
3118 | ||
3119 | /* msg is bytes 1-4 of the 40-bit idle message - the command code | |
3120 | is stripped off */ | |
3121 | ret = read_idle_sma(dd, &msg); | |
3122 | if (ret) | |
3123 | return; | |
3124 | dd_dev_info(dd, "%s: SMA message 0x%llx\n", __func__, msg); | |
3125 | /* | |
3126 | * React to the SMA message. Byte[1] (0 for us) is the command. | |
3127 | */ | |
3128 | switch (msg & 0xff) { | |
3129 | case SMA_IDLE_ARM: | |
3130 | /* | |
3131 | * See OPAv1 table 9-14 - HFI and External Switch Ports Key | |
3132 | * State Transitions | |
3133 | * | |
3134 | * Only expected in INIT or ARMED, discard otherwise. | |
3135 | */ | |
3136 | if (ppd->host_link_state & (HLS_UP_INIT | HLS_UP_ARMED)) | |
3137 | ppd->neighbor_normal = 1; | |
3138 | break; | |
3139 | case SMA_IDLE_ACTIVE: | |
3140 | /* | |
3141 | * See OPAv1 table 9-14 - HFI and External Switch Ports Key | |
3142 | * State Transitions | |
3143 | * | |
3144 | * Can activate the node. Discard otherwise. | |
3145 | */ | |
3146 | if (ppd->host_link_state == HLS_UP_ARMED | |
3147 | && ppd->is_active_optimize_enabled) { | |
3148 | ppd->neighbor_normal = 1; | |
3149 | ret = set_link_state(ppd, HLS_UP_ACTIVE); | |
3150 | if (ret) | |
3151 | dd_dev_err( | |
3152 | dd, | |
3153 | "%s: received Active SMA idle message, couldn't set link to Active\n", | |
3154 | __func__); | |
3155 | } | |
3156 | break; | |
3157 | default: | |
3158 | dd_dev_err(dd, | |
3159 | "%s: received unexpected SMA idle message 0x%llx\n", | |
3160 | __func__, msg); | |
3161 | break; | |
3162 | } | |
3163 | } | |
3164 | ||
3165 | static void adjust_rcvctrl(struct hfi1_devdata *dd, u64 add, u64 clear) | |
3166 | { | |
3167 | u64 rcvctrl; | |
3168 | unsigned long flags; | |
3169 | ||
3170 | spin_lock_irqsave(&dd->rcvctrl_lock, flags); | |
3171 | rcvctrl = read_csr(dd, RCV_CTRL); | |
3172 | rcvctrl |= add; | |
3173 | rcvctrl &= ~clear; | |
3174 | write_csr(dd, RCV_CTRL, rcvctrl); | |
3175 | spin_unlock_irqrestore(&dd->rcvctrl_lock, flags); | |
3176 | } | |
3177 | ||
3178 | static inline void add_rcvctrl(struct hfi1_devdata *dd, u64 add) | |
3179 | { | |
3180 | adjust_rcvctrl(dd, add, 0); | |
3181 | } | |
3182 | ||
3183 | static inline void clear_rcvctrl(struct hfi1_devdata *dd, u64 clear) | |
3184 | { | |
3185 | adjust_rcvctrl(dd, 0, clear); | |
3186 | } | |
3187 | ||
3188 | /* | |
3189 | * Called from all interrupt handlers to start handling an SPC freeze. | |
3190 | */ | |
3191 | void start_freeze_handling(struct hfi1_pportdata *ppd, int flags) | |
3192 | { | |
3193 | struct hfi1_devdata *dd = ppd->dd; | |
3194 | struct send_context *sc; | |
3195 | int i; | |
3196 | ||
3197 | if (flags & FREEZE_SELF) | |
3198 | write_csr(dd, CCE_CTRL, CCE_CTRL_SPC_FREEZE_SMASK); | |
3199 | ||
3200 | /* enter frozen mode */ | |
3201 | dd->flags |= HFI1_FROZEN; | |
3202 | ||
3203 | /* notify all SDMA engines that they are going into a freeze */ | |
3204 | sdma_freeze_notify(dd, !!(flags & FREEZE_LINK_DOWN)); | |
3205 | ||
3206 | /* do halt pre-handling on all enabled send contexts */ | |
3207 | for (i = 0; i < dd->num_send_contexts; i++) { | |
3208 | sc = dd->send_contexts[i].sc; | |
3209 | if (sc && (sc->flags & SCF_ENABLED)) | |
3210 | sc_stop(sc, SCF_FROZEN | SCF_HALTED); | |
3211 | } | |
3212 | ||
3213 | /* Send context are frozen. Notify user space */ | |
3214 | hfi1_set_uevent_bits(ppd, _HFI1_EVENT_FROZEN_BIT); | |
3215 | ||
3216 | if (flags & FREEZE_ABORT) { | |
3217 | dd_dev_err(dd, | |
3218 | "Aborted freeze recovery. Please REBOOT system\n"); | |
3219 | return; | |
3220 | } | |
3221 | /* queue non-interrupt handler */ | |
3222 | queue_work(ppd->hfi1_wq, &ppd->freeze_work); | |
3223 | } | |
3224 | ||
3225 | /* | |
3226 | * Wait until all 4 sub-blocks indicate that they have frozen or unfrozen, | |
3227 | * depending on the "freeze" parameter. | |
3228 | * | |
3229 | * No need to return an error if it times out, our only option | |
3230 | * is to proceed anyway. | |
3231 | */ | |
3232 | static void wait_for_freeze_status(struct hfi1_devdata *dd, int freeze) | |
3233 | { | |
3234 | unsigned long timeout; | |
3235 | u64 reg; | |
3236 | ||
3237 | timeout = jiffies + msecs_to_jiffies(FREEZE_STATUS_TIMEOUT); | |
3238 | while (1) { | |
3239 | reg = read_csr(dd, CCE_STATUS); | |
3240 | if (freeze) { | |
3241 | /* waiting until all indicators are set */ | |
3242 | if ((reg & ALL_FROZE) == ALL_FROZE) | |
3243 | return; /* all done */ | |
3244 | } else { | |
3245 | /* waiting until all indicators are clear */ | |
3246 | if ((reg & ALL_FROZE) == 0) | |
3247 | return; /* all done */ | |
3248 | } | |
3249 | ||
3250 | if (time_after(jiffies, timeout)) { | |
3251 | dd_dev_err(dd, | |
3252 | "Time out waiting for SPC %sfreeze, bits 0x%llx, expecting 0x%llx, continuing", | |
3253 | freeze ? "" : "un", | |
3254 | reg & ALL_FROZE, | |
3255 | freeze ? ALL_FROZE : 0ull); | |
3256 | return; | |
3257 | } | |
3258 | usleep_range(80, 120); | |
3259 | } | |
3260 | } | |
3261 | ||
3262 | /* | |
3263 | * Do all freeze handling for the RXE block. | |
3264 | */ | |
3265 | static void rxe_freeze(struct hfi1_devdata *dd) | |
3266 | { | |
3267 | int i; | |
3268 | ||
3269 | /* disable port */ | |
3270 | clear_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK); | |
3271 | ||
3272 | /* disable all receive contexts */ | |
3273 | for (i = 0; i < dd->num_rcv_contexts; i++) | |
3274 | hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_DIS, i); | |
3275 | } | |
3276 | ||
3277 | /* | |
3278 | * Unfreeze handling for the RXE block - kernel contexts only. | |
3279 | * This will also enable the port. User contexts will do unfreeze | |
3280 | * handling on a per-context basis as they call into the driver. | |
3281 | * | |
3282 | */ | |
3283 | static void rxe_kernel_unfreeze(struct hfi1_devdata *dd) | |
3284 | { | |
3285 | int i; | |
3286 | ||
3287 | /* enable all kernel contexts */ | |
3288 | for (i = 0; i < dd->n_krcv_queues; i++) | |
3289 | hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_ENB, i); | |
3290 | ||
3291 | /* enable port */ | |
3292 | add_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK); | |
3293 | } | |
3294 | ||
3295 | /* | |
3296 | * Non-interrupt SPC freeze handling. | |
3297 | * | |
3298 | * This is a work-queue function outside of the triggering interrupt. | |
3299 | */ | |
3300 | void handle_freeze(struct work_struct *work) | |
3301 | { | |
3302 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3303 | freeze_work); | |
3304 | struct hfi1_devdata *dd = ppd->dd; | |
3305 | ||
3306 | /* wait for freeze indicators on all affected blocks */ | |
3307 | dd_dev_info(dd, "Entering SPC freeze\n"); | |
3308 | wait_for_freeze_status(dd, 1); | |
3309 | ||
3310 | /* SPC is now frozen */ | |
3311 | ||
3312 | /* do send PIO freeze steps */ | |
3313 | pio_freeze(dd); | |
3314 | ||
3315 | /* do send DMA freeze steps */ | |
3316 | sdma_freeze(dd); | |
3317 | ||
3318 | /* do send egress freeze steps - nothing to do */ | |
3319 | ||
3320 | /* do receive freeze steps */ | |
3321 | rxe_freeze(dd); | |
3322 | ||
3323 | /* | |
3324 | * Unfreeze the hardware - clear the freeze, wait for each | |
3325 | * block's frozen bit to clear, then clear the frozen flag. | |
3326 | */ | |
3327 | write_csr(dd, CCE_CTRL, CCE_CTRL_SPC_UNFREEZE_SMASK); | |
3328 | wait_for_freeze_status(dd, 0); | |
3329 | ||
995deafa | 3330 | if (is_ax(dd)) { |
77241056 MM |
3331 | write_csr(dd, CCE_CTRL, CCE_CTRL_SPC_FREEZE_SMASK); |
3332 | wait_for_freeze_status(dd, 1); | |
3333 | write_csr(dd, CCE_CTRL, CCE_CTRL_SPC_UNFREEZE_SMASK); | |
3334 | wait_for_freeze_status(dd, 0); | |
3335 | } | |
3336 | ||
3337 | /* do send PIO unfreeze steps for kernel contexts */ | |
3338 | pio_kernel_unfreeze(dd); | |
3339 | ||
3340 | /* do send DMA unfreeze steps */ | |
3341 | sdma_unfreeze(dd); | |
3342 | ||
3343 | /* do send egress unfreeze steps - nothing to do */ | |
3344 | ||
3345 | /* do receive unfreeze steps for kernel contexts */ | |
3346 | rxe_kernel_unfreeze(dd); | |
3347 | ||
3348 | /* | |
3349 | * The unfreeze procedure touches global device registers when | |
3350 | * it disables and re-enables RXE. Mark the device unfrozen | |
3351 | * after all that is done so other parts of the driver waiting | |
3352 | * for the device to unfreeze don't do things out of order. | |
3353 | * | |
3354 | * The above implies that the meaning of HFI1_FROZEN flag is | |
3355 | * "Device has gone into freeze mode and freeze mode handling | |
3356 | * is still in progress." | |
3357 | * | |
3358 | * The flag will be removed when freeze mode processing has | |
3359 | * completed. | |
3360 | */ | |
3361 | dd->flags &= ~HFI1_FROZEN; | |
3362 | wake_up(&dd->event_queue); | |
3363 | ||
3364 | /* no longer frozen */ | |
3365 | dd_dev_err(dd, "Exiting SPC freeze\n"); | |
3366 | } | |
3367 | ||
3368 | /* | |
3369 | * Handle a link up interrupt from the 8051. | |
3370 | * | |
3371 | * This is a work-queue function outside of the interrupt. | |
3372 | */ | |
3373 | void handle_link_up(struct work_struct *work) | |
3374 | { | |
3375 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3376 | link_up_work); | |
3377 | set_link_state(ppd, HLS_UP_INIT); | |
3378 | ||
3379 | /* cache the read of DC_LCB_STS_ROUND_TRIP_LTP_CNT */ | |
3380 | read_ltp_rtt(ppd->dd); | |
3381 | /* | |
3382 | * OPA specifies that certain counters are cleared on a transition | |
3383 | * to link up, so do that. | |
3384 | */ | |
3385 | clear_linkup_counters(ppd->dd); | |
3386 | /* | |
3387 | * And (re)set link up default values. | |
3388 | */ | |
3389 | set_linkup_defaults(ppd); | |
3390 | ||
3391 | /* enforce link speed enabled */ | |
3392 | if ((ppd->link_speed_active & ppd->link_speed_enabled) == 0) { | |
3393 | /* oops - current speed is not enabled, bounce */ | |
3394 | dd_dev_err(ppd->dd, | |
3395 | "Link speed active 0x%x is outside enabled 0x%x, downing link\n", | |
3396 | ppd->link_speed_active, ppd->link_speed_enabled); | |
3397 | set_link_down_reason(ppd, OPA_LINKDOWN_REASON_SPEED_POLICY, 0, | |
3398 | OPA_LINKDOWN_REASON_SPEED_POLICY); | |
3399 | set_link_state(ppd, HLS_DN_OFFLINE); | |
3400 | start_link(ppd); | |
3401 | } | |
3402 | } | |
3403 | ||
3404 | /* Several pieces of LNI information were cached for SMA in ppd. | |
3405 | * Reset these on link down */ | |
3406 | static void reset_neighbor_info(struct hfi1_pportdata *ppd) | |
3407 | { | |
3408 | ppd->neighbor_guid = 0; | |
3409 | ppd->neighbor_port_number = 0; | |
3410 | ppd->neighbor_type = 0; | |
3411 | ppd->neighbor_fm_security = 0; | |
3412 | } | |
3413 | ||
3414 | /* | |
3415 | * Handle a link down interrupt from the 8051. | |
3416 | * | |
3417 | * This is a work-queue function outside of the interrupt. | |
3418 | */ | |
3419 | void handle_link_down(struct work_struct *work) | |
3420 | { | |
3421 | u8 lcl_reason, neigh_reason = 0; | |
3422 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3423 | link_down_work); | |
3424 | ||
3425 | /* go offline first, then deal with reasons */ | |
3426 | set_link_state(ppd, HLS_DN_OFFLINE); | |
3427 | ||
3428 | lcl_reason = 0; | |
3429 | read_planned_down_reason_code(ppd->dd, &neigh_reason); | |
3430 | ||
3431 | /* | |
3432 | * If no reason, assume peer-initiated but missed | |
3433 | * LinkGoingDown idle flits. | |
3434 | */ | |
3435 | if (neigh_reason == 0) | |
3436 | lcl_reason = OPA_LINKDOWN_REASON_NEIGHBOR_UNKNOWN; | |
3437 | ||
3438 | set_link_down_reason(ppd, lcl_reason, neigh_reason, 0); | |
3439 | ||
3440 | reset_neighbor_info(ppd); | |
3441 | ||
3442 | /* disable the port */ | |
3443 | clear_rcvctrl(ppd->dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK); | |
3444 | ||
3445 | /* If there is no cable attached, turn the DC off. Otherwise, | |
3446 | * start the link bring up. */ | |
3447 | if (!qsfp_mod_present(ppd)) | |
3448 | dc_shutdown(ppd->dd); | |
3449 | else | |
3450 | start_link(ppd); | |
3451 | } | |
3452 | ||
3453 | void handle_link_bounce(struct work_struct *work) | |
3454 | { | |
3455 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3456 | link_bounce_work); | |
3457 | ||
3458 | /* | |
3459 | * Only do something if the link is currently up. | |
3460 | */ | |
3461 | if (ppd->host_link_state & HLS_UP) { | |
3462 | set_link_state(ppd, HLS_DN_OFFLINE); | |
3463 | start_link(ppd); | |
3464 | } else { | |
3465 | dd_dev_info(ppd->dd, "%s: link not up (%s), nothing to do\n", | |
3466 | __func__, link_state_name(ppd->host_link_state)); | |
3467 | } | |
3468 | } | |
3469 | ||
3470 | /* | |
3471 | * Mask conversion: Capability exchange to Port LTP. The capability | |
3472 | * exchange has an implicit 16b CRC that is mandatory. | |
3473 | */ | |
3474 | static int cap_to_port_ltp(int cap) | |
3475 | { | |
3476 | int port_ltp = PORT_LTP_CRC_MODE_16; /* this mode is mandatory */ | |
3477 | ||
3478 | if (cap & CAP_CRC_14B) | |
3479 | port_ltp |= PORT_LTP_CRC_MODE_14; | |
3480 | if (cap & CAP_CRC_48B) | |
3481 | port_ltp |= PORT_LTP_CRC_MODE_48; | |
3482 | if (cap & CAP_CRC_12B_16B_PER_LANE) | |
3483 | port_ltp |= PORT_LTP_CRC_MODE_PER_LANE; | |
3484 | ||
3485 | return port_ltp; | |
3486 | } | |
3487 | ||
3488 | /* | |
3489 | * Convert an OPA Port LTP mask to capability mask | |
3490 | */ | |
3491 | int port_ltp_to_cap(int port_ltp) | |
3492 | { | |
3493 | int cap_mask = 0; | |
3494 | ||
3495 | if (port_ltp & PORT_LTP_CRC_MODE_14) | |
3496 | cap_mask |= CAP_CRC_14B; | |
3497 | if (port_ltp & PORT_LTP_CRC_MODE_48) | |
3498 | cap_mask |= CAP_CRC_48B; | |
3499 | if (port_ltp & PORT_LTP_CRC_MODE_PER_LANE) | |
3500 | cap_mask |= CAP_CRC_12B_16B_PER_LANE; | |
3501 | ||
3502 | return cap_mask; | |
3503 | } | |
3504 | ||
3505 | /* | |
3506 | * Convert a single DC LCB CRC mode to an OPA Port LTP mask. | |
3507 | */ | |
3508 | static int lcb_to_port_ltp(int lcb_crc) | |
3509 | { | |
3510 | int port_ltp = 0; | |
3511 | ||
3512 | if (lcb_crc == LCB_CRC_12B_16B_PER_LANE) | |
3513 | port_ltp = PORT_LTP_CRC_MODE_PER_LANE; | |
3514 | else if (lcb_crc == LCB_CRC_48B) | |
3515 | port_ltp = PORT_LTP_CRC_MODE_48; | |
3516 | else if (lcb_crc == LCB_CRC_14B) | |
3517 | port_ltp = PORT_LTP_CRC_MODE_14; | |
3518 | else | |
3519 | port_ltp = PORT_LTP_CRC_MODE_16; | |
3520 | ||
3521 | return port_ltp; | |
3522 | } | |
3523 | ||
3524 | /* | |
3525 | * Our neighbor has indicated that we are allowed to act as a fabric | |
3526 | * manager, so place the full management partition key in the second | |
3527 | * (0-based) pkey array position (see OPAv1, section 20.2.2.6.8). Note | |
3528 | * that we should already have the limited management partition key in | |
3529 | * array element 1, and also that the port is not yet up when | |
3530 | * add_full_mgmt_pkey() is invoked. | |
3531 | */ | |
3532 | static void add_full_mgmt_pkey(struct hfi1_pportdata *ppd) | |
3533 | { | |
3534 | struct hfi1_devdata *dd = ppd->dd; | |
3535 | ||
3536 | /* Sanity check - ppd->pkeys[2] should be 0 */ | |
3537 | if (ppd->pkeys[2] != 0) | |
3538 | dd_dev_err(dd, "%s pkey[2] already set to 0x%x, resetting it to 0x%x\n", | |
3539 | __func__, ppd->pkeys[2], FULL_MGMT_P_KEY); | |
3540 | ppd->pkeys[2] = FULL_MGMT_P_KEY; | |
3541 | (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0); | |
3542 | } | |
3543 | ||
3544 | /* | |
3545 | * Convert the given link width to the OPA link width bitmask. | |
3546 | */ | |
3547 | static u16 link_width_to_bits(struct hfi1_devdata *dd, u16 width) | |
3548 | { | |
3549 | switch (width) { | |
3550 | case 0: | |
3551 | /* | |
3552 | * Simulator and quick linkup do not set the width. | |
3553 | * Just set it to 4x without complaint. | |
3554 | */ | |
3555 | if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR || quick_linkup) | |
3556 | return OPA_LINK_WIDTH_4X; | |
3557 | return 0; /* no lanes up */ | |
3558 | case 1: return OPA_LINK_WIDTH_1X; | |
3559 | case 2: return OPA_LINK_WIDTH_2X; | |
3560 | case 3: return OPA_LINK_WIDTH_3X; | |
3561 | default: | |
3562 | dd_dev_info(dd, "%s: invalid width %d, using 4\n", | |
3563 | __func__, width); | |
3564 | /* fall through */ | |
3565 | case 4: return OPA_LINK_WIDTH_4X; | |
3566 | } | |
3567 | } | |
3568 | ||
3569 | /* | |
3570 | * Do a population count on the bottom nibble. | |
3571 | */ | |
3572 | static const u8 bit_counts[16] = { | |
3573 | 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 | |
3574 | }; | |
3575 | static inline u8 nibble_to_count(u8 nibble) | |
3576 | { | |
3577 | return bit_counts[nibble & 0xf]; | |
3578 | } | |
3579 | ||
3580 | /* | |
3581 | * Read the active lane information from the 8051 registers and return | |
3582 | * their widths. | |
3583 | * | |
3584 | * Active lane information is found in these 8051 registers: | |
3585 | * enable_lane_tx | |
3586 | * enable_lane_rx | |
3587 | */ | |
3588 | static void get_link_widths(struct hfi1_devdata *dd, u16 *tx_width, | |
3589 | u16 *rx_width) | |
3590 | { | |
3591 | u16 tx, rx; | |
3592 | u8 enable_lane_rx; | |
3593 | u8 enable_lane_tx; | |
3594 | u8 tx_polarity_inversion; | |
3595 | u8 rx_polarity_inversion; | |
3596 | u8 max_rate; | |
3597 | ||
3598 | /* read the active lanes */ | |
3599 | read_tx_settings(dd, &enable_lane_tx, &tx_polarity_inversion, | |
3600 | &rx_polarity_inversion, &max_rate); | |
3601 | read_local_lni(dd, &enable_lane_rx); | |
3602 | ||
3603 | /* convert to counts */ | |
3604 | tx = nibble_to_count(enable_lane_tx); | |
3605 | rx = nibble_to_count(enable_lane_rx); | |
3606 | ||
3607 | /* | |
3608 | * Set link_speed_active here, overriding what was set in | |
3609 | * handle_verify_cap(). The ASIC 8051 firmware does not correctly | |
3610 | * set the max_rate field in handle_verify_cap until v0.19. | |
3611 | */ | |
3612 | if ((dd->icode == ICODE_RTL_SILICON) | |
3613 | && (dd->dc8051_ver < dc8051_ver(0, 19))) { | |
3614 | /* max_rate: 0 = 12.5G, 1 = 25G */ | |
3615 | switch (max_rate) { | |
3616 | case 0: | |
3617 | dd->pport[0].link_speed_active = OPA_LINK_SPEED_12_5G; | |
3618 | break; | |
3619 | default: | |
3620 | dd_dev_err(dd, | |
3621 | "%s: unexpected max rate %d, using 25Gb\n", | |
3622 | __func__, (int)max_rate); | |
3623 | /* fall through */ | |
3624 | case 1: | |
3625 | dd->pport[0].link_speed_active = OPA_LINK_SPEED_25G; | |
3626 | break; | |
3627 | } | |
3628 | } | |
3629 | ||
3630 | dd_dev_info(dd, | |
3631 | "Fabric active lanes (width): tx 0x%x (%d), rx 0x%x (%d)\n", | |
3632 | enable_lane_tx, tx, enable_lane_rx, rx); | |
3633 | *tx_width = link_width_to_bits(dd, tx); | |
3634 | *rx_width = link_width_to_bits(dd, rx); | |
3635 | } | |
3636 | ||
3637 | /* | |
3638 | * Read verify_cap_local_fm_link_width[1] to obtain the link widths. | |
3639 | * Valid after the end of VerifyCap and during LinkUp. Does not change | |
3640 | * after link up. I.e. look elsewhere for downgrade information. | |
3641 | * | |
3642 | * Bits are: | |
3643 | * + bits [7:4] contain the number of active transmitters | |
3644 | * + bits [3:0] contain the number of active receivers | |
3645 | * These are numbers 1 through 4 and can be different values if the | |
3646 | * link is asymmetric. | |
3647 | * | |
3648 | * verify_cap_local_fm_link_width[0] retains its original value. | |
3649 | */ | |
3650 | static void get_linkup_widths(struct hfi1_devdata *dd, u16 *tx_width, | |
3651 | u16 *rx_width) | |
3652 | { | |
3653 | u16 widths, tx, rx; | |
3654 | u8 misc_bits, local_flags; | |
3655 | u16 active_tx, active_rx; | |
3656 | ||
3657 | read_vc_local_link_width(dd, &misc_bits, &local_flags, &widths); | |
3658 | tx = widths >> 12; | |
3659 | rx = (widths >> 8) & 0xf; | |
3660 | ||
3661 | *tx_width = link_width_to_bits(dd, tx); | |
3662 | *rx_width = link_width_to_bits(dd, rx); | |
3663 | ||
3664 | /* print the active widths */ | |
3665 | get_link_widths(dd, &active_tx, &active_rx); | |
3666 | } | |
3667 | ||
3668 | /* | |
3669 | * Set ppd->link_width_active and ppd->link_width_downgrade_active using | |
3670 | * hardware information when the link first comes up. | |
3671 | * | |
3672 | * The link width is not available until after VerifyCap.AllFramesReceived | |
3673 | * (the trigger for handle_verify_cap), so this is outside that routine | |
3674 | * and should be called when the 8051 signals linkup. | |
3675 | */ | |
3676 | void get_linkup_link_widths(struct hfi1_pportdata *ppd) | |
3677 | { | |
3678 | u16 tx_width, rx_width; | |
3679 | ||
3680 | /* get end-of-LNI link widths */ | |
3681 | get_linkup_widths(ppd->dd, &tx_width, &rx_width); | |
3682 | ||
3683 | /* use tx_width as the link is supposed to be symmetric on link up */ | |
3684 | ppd->link_width_active = tx_width; | |
3685 | /* link width downgrade active (LWD.A) starts out matching LW.A */ | |
3686 | ppd->link_width_downgrade_tx_active = ppd->link_width_active; | |
3687 | ppd->link_width_downgrade_rx_active = ppd->link_width_active; | |
3688 | /* per OPA spec, on link up LWD.E resets to LWD.S */ | |
3689 | ppd->link_width_downgrade_enabled = ppd->link_width_downgrade_supported; | |
3690 | /* cache the active egress rate (units {10^6 bits/sec]) */ | |
3691 | ppd->current_egress_rate = active_egress_rate(ppd); | |
3692 | } | |
3693 | ||
3694 | /* | |
3695 | * Handle a verify capabilities interrupt from the 8051. | |
3696 | * | |
3697 | * This is a work-queue function outside of the interrupt. | |
3698 | */ | |
3699 | void handle_verify_cap(struct work_struct *work) | |
3700 | { | |
3701 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3702 | link_vc_work); | |
3703 | struct hfi1_devdata *dd = ppd->dd; | |
3704 | u64 reg; | |
3705 | u8 power_management; | |
3706 | u8 continious; | |
3707 | u8 vcu; | |
3708 | u8 vau; | |
3709 | u8 z; | |
3710 | u16 vl15buf; | |
3711 | u16 link_widths; | |
3712 | u16 crc_mask; | |
3713 | u16 crc_val; | |
3714 | u16 device_id; | |
3715 | u16 active_tx, active_rx; | |
3716 | u8 partner_supported_crc; | |
3717 | u8 remote_tx_rate; | |
3718 | u8 device_rev; | |
3719 | ||
3720 | set_link_state(ppd, HLS_VERIFY_CAP); | |
3721 | ||
3722 | lcb_shutdown(dd, 0); | |
3723 | adjust_lcb_for_fpga_serdes(dd); | |
3724 | ||
3725 | /* | |
3726 | * These are now valid: | |
3727 | * remote VerifyCap fields in the general LNI config | |
3728 | * CSR DC8051_STS_REMOTE_GUID | |
3729 | * CSR DC8051_STS_REMOTE_NODE_TYPE | |
3730 | * CSR DC8051_STS_REMOTE_FM_SECURITY | |
3731 | * CSR DC8051_STS_REMOTE_PORT_NO | |
3732 | */ | |
3733 | ||
3734 | read_vc_remote_phy(dd, &power_management, &continious); | |
3735 | read_vc_remote_fabric( | |
3736 | dd, | |
3737 | &vau, | |
3738 | &z, | |
3739 | &vcu, | |
3740 | &vl15buf, | |
3741 | &partner_supported_crc); | |
3742 | read_vc_remote_link_width(dd, &remote_tx_rate, &link_widths); | |
3743 | read_remote_device_id(dd, &device_id, &device_rev); | |
3744 | /* | |
3745 | * And the 'MgmtAllowed' information, which is exchanged during | |
3746 | * LNI, is also be available at this point. | |
3747 | */ | |
3748 | read_mgmt_allowed(dd, &ppd->mgmt_allowed); | |
3749 | /* print the active widths */ | |
3750 | get_link_widths(dd, &active_tx, &active_rx); | |
3751 | dd_dev_info(dd, | |
3752 | "Peer PHY: power management 0x%x, continuous updates 0x%x\n", | |
3753 | (int)power_management, (int)continious); | |
3754 | dd_dev_info(dd, | |
3755 | "Peer Fabric: vAU %d, Z %d, vCU %d, vl15 credits 0x%x, CRC sizes 0x%x\n", | |
3756 | (int)vau, | |
3757 | (int)z, | |
3758 | (int)vcu, | |
3759 | (int)vl15buf, | |
3760 | (int)partner_supported_crc); | |
3761 | dd_dev_info(dd, "Peer Link Width: tx rate 0x%x, widths 0x%x\n", | |
3762 | (u32)remote_tx_rate, (u32)link_widths); | |
3763 | dd_dev_info(dd, "Peer Device ID: 0x%04x, Revision 0x%02x\n", | |
3764 | (u32)device_id, (u32)device_rev); | |
3765 | /* | |
3766 | * The peer vAU value just read is the peer receiver value. HFI does | |
3767 | * not support a transmit vAU of 0 (AU == 8). We advertised that | |
3768 | * with Z=1 in the fabric capabilities sent to the peer. The peer | |
3769 | * will see our Z=1, and, if it advertised a vAU of 0, will move its | |
3770 | * receive to vAU of 1 (AU == 16). Do the same here. We do not care | |
3771 | * about the peer Z value - our sent vAU is 3 (hardwired) and is not | |
3772 | * subject to the Z value exception. | |
3773 | */ | |
3774 | if (vau == 0) | |
3775 | vau = 1; | |
3776 | set_up_vl15(dd, vau, vl15buf); | |
3777 | ||
3778 | /* set up the LCB CRC mode */ | |
3779 | crc_mask = ppd->port_crc_mode_enabled & partner_supported_crc; | |
3780 | ||
3781 | /* order is important: use the lowest bit in common */ | |
3782 | if (crc_mask & CAP_CRC_14B) | |
3783 | crc_val = LCB_CRC_14B; | |
3784 | else if (crc_mask & CAP_CRC_48B) | |
3785 | crc_val = LCB_CRC_48B; | |
3786 | else if (crc_mask & CAP_CRC_12B_16B_PER_LANE) | |
3787 | crc_val = LCB_CRC_12B_16B_PER_LANE; | |
3788 | else | |
3789 | crc_val = LCB_CRC_16B; | |
3790 | ||
3791 | dd_dev_info(dd, "Final LCB CRC mode: %d\n", (int)crc_val); | |
3792 | write_csr(dd, DC_LCB_CFG_CRC_MODE, | |
3793 | (u64)crc_val << DC_LCB_CFG_CRC_MODE_TX_VAL_SHIFT); | |
3794 | ||
3795 | /* set (14b only) or clear sideband credit */ | |
3796 | reg = read_csr(dd, SEND_CM_CTRL); | |
3797 | if (crc_val == LCB_CRC_14B && crc_14b_sideband) { | |
3798 | write_csr(dd, SEND_CM_CTRL, | |
3799 | reg | SEND_CM_CTRL_FORCE_CREDIT_MODE_SMASK); | |
3800 | } else { | |
3801 | write_csr(dd, SEND_CM_CTRL, | |
3802 | reg & ~SEND_CM_CTRL_FORCE_CREDIT_MODE_SMASK); | |
3803 | } | |
3804 | ||
3805 | ppd->link_speed_active = 0; /* invalid value */ | |
3806 | if (dd->dc8051_ver < dc8051_ver(0, 20)) { | |
3807 | /* remote_tx_rate: 0 = 12.5G, 1 = 25G */ | |
3808 | switch (remote_tx_rate) { | |
3809 | case 0: | |
3810 | ppd->link_speed_active = OPA_LINK_SPEED_12_5G; | |
3811 | break; | |
3812 | case 1: | |
3813 | ppd->link_speed_active = OPA_LINK_SPEED_25G; | |
3814 | break; | |
3815 | } | |
3816 | } else { | |
3817 | /* actual rate is highest bit of the ANDed rates */ | |
3818 | u8 rate = remote_tx_rate & ppd->local_tx_rate; | |
3819 | ||
3820 | if (rate & 2) | |
3821 | ppd->link_speed_active = OPA_LINK_SPEED_25G; | |
3822 | else if (rate & 1) | |
3823 | ppd->link_speed_active = OPA_LINK_SPEED_12_5G; | |
3824 | } | |
3825 | if (ppd->link_speed_active == 0) { | |
3826 | dd_dev_err(dd, "%s: unexpected remote tx rate %d, using 25Gb\n", | |
3827 | __func__, (int)remote_tx_rate); | |
3828 | ppd->link_speed_active = OPA_LINK_SPEED_25G; | |
3829 | } | |
3830 | ||
3831 | /* | |
3832 | * Cache the values of the supported, enabled, and active | |
3833 | * LTP CRC modes to return in 'portinfo' queries. But the bit | |
3834 | * flags that are returned in the portinfo query differ from | |
3835 | * what's in the link_crc_mask, crc_sizes, and crc_val | |
3836 | * variables. Convert these here. | |
3837 | */ | |
3838 | ppd->port_ltp_crc_mode = cap_to_port_ltp(link_crc_mask) << 8; | |
3839 | /* supported crc modes */ | |
3840 | ppd->port_ltp_crc_mode |= | |
3841 | cap_to_port_ltp(ppd->port_crc_mode_enabled) << 4; | |
3842 | /* enabled crc modes */ | |
3843 | ppd->port_ltp_crc_mode |= lcb_to_port_ltp(crc_val); | |
3844 | /* active crc mode */ | |
3845 | ||
3846 | /* set up the remote credit return table */ | |
3847 | assign_remote_cm_au_table(dd, vcu); | |
3848 | ||
3849 | /* | |
3850 | * The LCB is reset on entry to handle_verify_cap(), so this must | |
3851 | * be applied on every link up. | |
3852 | * | |
3853 | * Adjust LCB error kill enable to kill the link if | |
3854 | * these RBUF errors are seen: | |
3855 | * REPLAY_BUF_MBE_SMASK | |
3856 | * FLIT_INPUT_BUF_MBE_SMASK | |
3857 | */ | |
995deafa | 3858 | if (is_ax(dd)) { /* fixed in B0 */ |
77241056 MM |
3859 | reg = read_csr(dd, DC_LCB_CFG_LINK_KILL_EN); |
3860 | reg |= DC_LCB_CFG_LINK_KILL_EN_REPLAY_BUF_MBE_SMASK | |
3861 | | DC_LCB_CFG_LINK_KILL_EN_FLIT_INPUT_BUF_MBE_SMASK; | |
3862 | write_csr(dd, DC_LCB_CFG_LINK_KILL_EN, reg); | |
3863 | } | |
3864 | ||
3865 | /* pull LCB fifos out of reset - all fifo clocks must be stable */ | |
3866 | write_csr(dd, DC_LCB_CFG_TX_FIFOS_RESET, 0); | |
3867 | ||
3868 | /* give 8051 access to the LCB CSRs */ | |
3869 | write_csr(dd, DC_LCB_ERR_EN, 0); /* mask LCB errors */ | |
3870 | set_8051_lcb_access(dd); | |
3871 | ||
3872 | ppd->neighbor_guid = | |
3873 | read_csr(dd, DC_DC8051_STS_REMOTE_GUID); | |
3874 | ppd->neighbor_port_number = read_csr(dd, DC_DC8051_STS_REMOTE_PORT_NO) & | |
3875 | DC_DC8051_STS_REMOTE_PORT_NO_VAL_SMASK; | |
3876 | ppd->neighbor_type = | |
3877 | read_csr(dd, DC_DC8051_STS_REMOTE_NODE_TYPE) & | |
3878 | DC_DC8051_STS_REMOTE_NODE_TYPE_VAL_MASK; | |
3879 | ppd->neighbor_fm_security = | |
3880 | read_csr(dd, DC_DC8051_STS_REMOTE_FM_SECURITY) & | |
3881 | DC_DC8051_STS_LOCAL_FM_SECURITY_DISABLED_MASK; | |
3882 | dd_dev_info(dd, | |
3883 | "Neighbor Guid: %llx Neighbor type %d MgmtAllowed %d FM security bypass %d\n", | |
3884 | ppd->neighbor_guid, ppd->neighbor_type, | |
3885 | ppd->mgmt_allowed, ppd->neighbor_fm_security); | |
3886 | if (ppd->mgmt_allowed) | |
3887 | add_full_mgmt_pkey(ppd); | |
3888 | ||
3889 | /* tell the 8051 to go to LinkUp */ | |
3890 | set_link_state(ppd, HLS_GOING_UP); | |
3891 | } | |
3892 | ||
3893 | /* | |
3894 | * Apply the link width downgrade enabled policy against the current active | |
3895 | * link widths. | |
3896 | * | |
3897 | * Called when the enabled policy changes or the active link widths change. | |
3898 | */ | |
3899 | void apply_link_downgrade_policy(struct hfi1_pportdata *ppd, int refresh_widths) | |
3900 | { | |
77241056 | 3901 | int do_bounce = 0; |
323fd785 DL |
3902 | int tries; |
3903 | u16 lwde; | |
77241056 MM |
3904 | u16 tx, rx; |
3905 | ||
323fd785 DL |
3906 | /* use the hls lock to avoid a race with actual link up */ |
3907 | tries = 0; | |
3908 | retry: | |
77241056 MM |
3909 | mutex_lock(&ppd->hls_lock); |
3910 | /* only apply if the link is up */ | |
323fd785 DL |
3911 | if (!(ppd->host_link_state & HLS_UP)) { |
3912 | /* still going up..wait and retry */ | |
3913 | if (ppd->host_link_state & HLS_GOING_UP) { | |
3914 | if (++tries < 1000) { | |
3915 | mutex_unlock(&ppd->hls_lock); | |
3916 | usleep_range(100, 120); /* arbitrary */ | |
3917 | goto retry; | |
3918 | } | |
3919 | dd_dev_err(ppd->dd, | |
3920 | "%s: giving up waiting for link state change\n", | |
3921 | __func__); | |
3922 | } | |
3923 | goto done; | |
3924 | } | |
3925 | ||
3926 | lwde = ppd->link_width_downgrade_enabled; | |
77241056 MM |
3927 | |
3928 | if (refresh_widths) { | |
3929 | get_link_widths(ppd->dd, &tx, &rx); | |
3930 | ppd->link_width_downgrade_tx_active = tx; | |
3931 | ppd->link_width_downgrade_rx_active = rx; | |
3932 | } | |
3933 | ||
3934 | if (lwde == 0) { | |
3935 | /* downgrade is disabled */ | |
3936 | ||
3937 | /* bounce if not at starting active width */ | |
3938 | if ((ppd->link_width_active != | |
3939 | ppd->link_width_downgrade_tx_active) | |
3940 | || (ppd->link_width_active != | |
3941 | ppd->link_width_downgrade_rx_active)) { | |
3942 | dd_dev_err(ppd->dd, | |
3943 | "Link downgrade is disabled and link has downgraded, downing link\n"); | |
3944 | dd_dev_err(ppd->dd, | |
3945 | " original 0x%x, tx active 0x%x, rx active 0x%x\n", | |
3946 | ppd->link_width_active, | |
3947 | ppd->link_width_downgrade_tx_active, | |
3948 | ppd->link_width_downgrade_rx_active); | |
3949 | do_bounce = 1; | |
3950 | } | |
3951 | } else if ((lwde & ppd->link_width_downgrade_tx_active) == 0 | |
3952 | || (lwde & ppd->link_width_downgrade_rx_active) == 0) { | |
3953 | /* Tx or Rx is outside the enabled policy */ | |
3954 | dd_dev_err(ppd->dd, | |
3955 | "Link is outside of downgrade allowed, downing link\n"); | |
3956 | dd_dev_err(ppd->dd, | |
3957 | " enabled 0x%x, tx active 0x%x, rx active 0x%x\n", | |
3958 | lwde, | |
3959 | ppd->link_width_downgrade_tx_active, | |
3960 | ppd->link_width_downgrade_rx_active); | |
3961 | do_bounce = 1; | |
3962 | } | |
3963 | ||
323fd785 DL |
3964 | done: |
3965 | mutex_unlock(&ppd->hls_lock); | |
3966 | ||
77241056 MM |
3967 | if (do_bounce) { |
3968 | set_link_down_reason(ppd, OPA_LINKDOWN_REASON_WIDTH_POLICY, 0, | |
3969 | OPA_LINKDOWN_REASON_WIDTH_POLICY); | |
3970 | set_link_state(ppd, HLS_DN_OFFLINE); | |
3971 | start_link(ppd); | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | /* | |
3976 | * Handle a link downgrade interrupt from the 8051. | |
3977 | * | |
3978 | * This is a work-queue function outside of the interrupt. | |
3979 | */ | |
3980 | void handle_link_downgrade(struct work_struct *work) | |
3981 | { | |
3982 | struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, | |
3983 | link_downgrade_work); | |
3984 | ||
3985 | dd_dev_info(ppd->dd, "8051: Link width downgrade\n"); | |
3986 | apply_link_downgrade_policy(ppd, 1); | |
3987 | } | |
3988 | ||
3989 | static char *dcc_err_string(char *buf, int buf_len, u64 flags) | |
3990 | { | |
3991 | return flag_string(buf, buf_len, flags, dcc_err_flags, | |
3992 | ARRAY_SIZE(dcc_err_flags)); | |
3993 | } | |
3994 | ||
3995 | static char *lcb_err_string(char *buf, int buf_len, u64 flags) | |
3996 | { | |
3997 | return flag_string(buf, buf_len, flags, lcb_err_flags, | |
3998 | ARRAY_SIZE(lcb_err_flags)); | |
3999 | } | |
4000 | ||
4001 | static char *dc8051_err_string(char *buf, int buf_len, u64 flags) | |
4002 | { | |
4003 | return flag_string(buf, buf_len, flags, dc8051_err_flags, | |
4004 | ARRAY_SIZE(dc8051_err_flags)); | |
4005 | } | |
4006 | ||
4007 | static char *dc8051_info_err_string(char *buf, int buf_len, u64 flags) | |
4008 | { | |
4009 | return flag_string(buf, buf_len, flags, dc8051_info_err_flags, | |
4010 | ARRAY_SIZE(dc8051_info_err_flags)); | |
4011 | } | |
4012 | ||
4013 | static char *dc8051_info_host_msg_string(char *buf, int buf_len, u64 flags) | |
4014 | { | |
4015 | return flag_string(buf, buf_len, flags, dc8051_info_host_msg_flags, | |
4016 | ARRAY_SIZE(dc8051_info_host_msg_flags)); | |
4017 | } | |
4018 | ||
4019 | static void handle_8051_interrupt(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
4020 | { | |
4021 | struct hfi1_pportdata *ppd = dd->pport; | |
4022 | u64 info, err, host_msg; | |
4023 | int queue_link_down = 0; | |
4024 | char buf[96]; | |
4025 | ||
4026 | /* look at the flags */ | |
4027 | if (reg & DC_DC8051_ERR_FLG_SET_BY_8051_SMASK) { | |
4028 | /* 8051 information set by firmware */ | |
4029 | /* read DC8051_DBG_ERR_INFO_SET_BY_8051 for details */ | |
4030 | info = read_csr(dd, DC_DC8051_DBG_ERR_INFO_SET_BY_8051); | |
4031 | err = (info >> DC_DC8051_DBG_ERR_INFO_SET_BY_8051_ERROR_SHIFT) | |
4032 | & DC_DC8051_DBG_ERR_INFO_SET_BY_8051_ERROR_MASK; | |
4033 | host_msg = (info >> | |
4034 | DC_DC8051_DBG_ERR_INFO_SET_BY_8051_HOST_MSG_SHIFT) | |
4035 | & DC_DC8051_DBG_ERR_INFO_SET_BY_8051_HOST_MSG_MASK; | |
4036 | ||
4037 | /* | |
4038 | * Handle error flags. | |
4039 | */ | |
4040 | if (err & FAILED_LNI) { | |
4041 | /* | |
4042 | * LNI error indications are cleared by the 8051 | |
4043 | * only when starting polling. Only pay attention | |
4044 | * to them when in the states that occur during | |
4045 | * LNI. | |
4046 | */ | |
4047 | if (ppd->host_link_state | |
4048 | & (HLS_DN_POLL | HLS_VERIFY_CAP | HLS_GOING_UP)) { | |
4049 | queue_link_down = 1; | |
4050 | dd_dev_info(dd, "Link error: %s\n", | |
4051 | dc8051_info_err_string(buf, | |
4052 | sizeof(buf), | |
4053 | err & FAILED_LNI)); | |
4054 | } | |
4055 | err &= ~(u64)FAILED_LNI; | |
4056 | } | |
4057 | if (err) { | |
4058 | /* report remaining errors, but do not do anything */ | |
4059 | dd_dev_err(dd, "8051 info error: %s\n", | |
4060 | dc8051_info_err_string(buf, sizeof(buf), err)); | |
4061 | } | |
4062 | ||
4063 | /* | |
4064 | * Handle host message flags. | |
4065 | */ | |
4066 | if (host_msg & HOST_REQ_DONE) { | |
4067 | /* | |
4068 | * Presently, the driver does a busy wait for | |
4069 | * host requests to complete. This is only an | |
4070 | * informational message. | |
4071 | * NOTE: The 8051 clears the host message | |
4072 | * information *on the next 8051 command*. | |
4073 | * Therefore, when linkup is achieved, | |
4074 | * this flag will still be set. | |
4075 | */ | |
4076 | host_msg &= ~(u64)HOST_REQ_DONE; | |
4077 | } | |
4078 | if (host_msg & BC_SMA_MSG) { | |
4079 | queue_work(ppd->hfi1_wq, &ppd->sma_message_work); | |
4080 | host_msg &= ~(u64)BC_SMA_MSG; | |
4081 | } | |
4082 | if (host_msg & LINKUP_ACHIEVED) { | |
4083 | dd_dev_info(dd, "8051: Link up\n"); | |
4084 | queue_work(ppd->hfi1_wq, &ppd->link_up_work); | |
4085 | host_msg &= ~(u64)LINKUP_ACHIEVED; | |
4086 | } | |
4087 | if (host_msg & EXT_DEVICE_CFG_REQ) { | |
4088 | handle_8051_request(dd); | |
4089 | host_msg &= ~(u64)EXT_DEVICE_CFG_REQ; | |
4090 | } | |
4091 | if (host_msg & VERIFY_CAP_FRAME) { | |
4092 | queue_work(ppd->hfi1_wq, &ppd->link_vc_work); | |
4093 | host_msg &= ~(u64)VERIFY_CAP_FRAME; | |
4094 | } | |
4095 | if (host_msg & LINK_GOING_DOWN) { | |
4096 | const char *extra = ""; | |
4097 | /* no downgrade action needed if going down */ | |
4098 | if (host_msg & LINK_WIDTH_DOWNGRADED) { | |
4099 | host_msg &= ~(u64)LINK_WIDTH_DOWNGRADED; | |
4100 | extra = " (ignoring downgrade)"; | |
4101 | } | |
4102 | dd_dev_info(dd, "8051: Link down%s\n", extra); | |
4103 | queue_link_down = 1; | |
4104 | host_msg &= ~(u64)LINK_GOING_DOWN; | |
4105 | } | |
4106 | if (host_msg & LINK_WIDTH_DOWNGRADED) { | |
4107 | queue_work(ppd->hfi1_wq, &ppd->link_downgrade_work); | |
4108 | host_msg &= ~(u64)LINK_WIDTH_DOWNGRADED; | |
4109 | } | |
4110 | if (host_msg) { | |
4111 | /* report remaining messages, but do not do anything */ | |
4112 | dd_dev_info(dd, "8051 info host message: %s\n", | |
4113 | dc8051_info_host_msg_string(buf, sizeof(buf), | |
4114 | host_msg)); | |
4115 | } | |
4116 | ||
4117 | reg &= ~DC_DC8051_ERR_FLG_SET_BY_8051_SMASK; | |
4118 | } | |
4119 | if (reg & DC_DC8051_ERR_FLG_LOST_8051_HEART_BEAT_SMASK) { | |
4120 | /* | |
4121 | * Lost the 8051 heartbeat. If this happens, we | |
4122 | * receive constant interrupts about it. Disable | |
4123 | * the interrupt after the first. | |
4124 | */ | |
4125 | dd_dev_err(dd, "Lost 8051 heartbeat\n"); | |
4126 | write_csr(dd, DC_DC8051_ERR_EN, | |
4127 | read_csr(dd, DC_DC8051_ERR_EN) | |
4128 | & ~DC_DC8051_ERR_EN_LOST_8051_HEART_BEAT_SMASK); | |
4129 | ||
4130 | reg &= ~DC_DC8051_ERR_FLG_LOST_8051_HEART_BEAT_SMASK; | |
4131 | } | |
4132 | if (reg) { | |
4133 | /* report the error, but do not do anything */ | |
4134 | dd_dev_err(dd, "8051 error: %s\n", | |
4135 | dc8051_err_string(buf, sizeof(buf), reg)); | |
4136 | } | |
4137 | ||
4138 | if (queue_link_down) { | |
4139 | /* if the link is already going down or disabled, do not | |
4140 | * queue another */ | |
4141 | if ((ppd->host_link_state | |
4142 | & (HLS_GOING_OFFLINE|HLS_LINK_COOLDOWN)) | |
4143 | || ppd->link_enabled == 0) { | |
4144 | dd_dev_info(dd, "%s: not queuing link down\n", | |
4145 | __func__); | |
4146 | } else { | |
4147 | queue_work(ppd->hfi1_wq, &ppd->link_down_work); | |
4148 | } | |
4149 | } | |
4150 | } | |
4151 | ||
4152 | static const char * const fm_config_txt[] = { | |
4153 | [0] = | |
4154 | "BadHeadDist: Distance violation between two head flits", | |
4155 | [1] = | |
4156 | "BadTailDist: Distance violation between two tail flits", | |
4157 | [2] = | |
4158 | "BadCtrlDist: Distance violation between two credit control flits", | |
4159 | [3] = | |
4160 | "BadCrdAck: Credits return for unsupported VL", | |
4161 | [4] = | |
4162 | "UnsupportedVLMarker: Received VL Marker", | |
4163 | [5] = | |
4164 | "BadPreempt: Exceeded the preemption nesting level", | |
4165 | [6] = | |
4166 | "BadControlFlit: Received unsupported control flit", | |
4167 | /* no 7 */ | |
4168 | [8] = | |
4169 | "UnsupportedVLMarker: Received VL Marker for unconfigured or disabled VL", | |
4170 | }; | |
4171 | ||
4172 | static const char * const port_rcv_txt[] = { | |
4173 | [1] = | |
4174 | "BadPktLen: Illegal PktLen", | |
4175 | [2] = | |
4176 | "PktLenTooLong: Packet longer than PktLen", | |
4177 | [3] = | |
4178 | "PktLenTooShort: Packet shorter than PktLen", | |
4179 | [4] = | |
4180 | "BadSLID: Illegal SLID (0, using multicast as SLID, does not include security validation of SLID)", | |
4181 | [5] = | |
4182 | "BadDLID: Illegal DLID (0, doesn't match HFI)", | |
4183 | [6] = | |
4184 | "BadL2: Illegal L2 opcode", | |
4185 | [7] = | |
4186 | "BadSC: Unsupported SC", | |
4187 | [9] = | |
4188 | "BadRC: Illegal RC", | |
4189 | [11] = | |
4190 | "PreemptError: Preempting with same VL", | |
4191 | [12] = | |
4192 | "PreemptVL15: Preempting a VL15 packet", | |
4193 | }; | |
4194 | ||
4195 | #define OPA_LDR_FMCONFIG_OFFSET 16 | |
4196 | #define OPA_LDR_PORTRCV_OFFSET 0 | |
4197 | static void handle_dcc_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
4198 | { | |
4199 | u64 info, hdr0, hdr1; | |
4200 | const char *extra; | |
4201 | char buf[96]; | |
4202 | struct hfi1_pportdata *ppd = dd->pport; | |
4203 | u8 lcl_reason = 0; | |
4204 | int do_bounce = 0; | |
4205 | ||
4206 | if (reg & DCC_ERR_FLG_UNCORRECTABLE_ERR_SMASK) { | |
4207 | if (!(dd->err_info_uncorrectable & OPA_EI_STATUS_SMASK)) { | |
4208 | info = read_csr(dd, DCC_ERR_INFO_UNCORRECTABLE); | |
4209 | dd->err_info_uncorrectable = info & OPA_EI_CODE_SMASK; | |
4210 | /* set status bit */ | |
4211 | dd->err_info_uncorrectable |= OPA_EI_STATUS_SMASK; | |
4212 | } | |
4213 | reg &= ~DCC_ERR_FLG_UNCORRECTABLE_ERR_SMASK; | |
4214 | } | |
4215 | ||
4216 | if (reg & DCC_ERR_FLG_LINK_ERR_SMASK) { | |
4217 | struct hfi1_pportdata *ppd = dd->pport; | |
4218 | /* this counter saturates at (2^32) - 1 */ | |
4219 | if (ppd->link_downed < (u32)UINT_MAX) | |
4220 | ppd->link_downed++; | |
4221 | reg &= ~DCC_ERR_FLG_LINK_ERR_SMASK; | |
4222 | } | |
4223 | ||
4224 | if (reg & DCC_ERR_FLG_FMCONFIG_ERR_SMASK) { | |
4225 | u8 reason_valid = 1; | |
4226 | ||
4227 | info = read_csr(dd, DCC_ERR_INFO_FMCONFIG); | |
4228 | if (!(dd->err_info_fmconfig & OPA_EI_STATUS_SMASK)) { | |
4229 | dd->err_info_fmconfig = info & OPA_EI_CODE_SMASK; | |
4230 | /* set status bit */ | |
4231 | dd->err_info_fmconfig |= OPA_EI_STATUS_SMASK; | |
4232 | } | |
4233 | switch (info) { | |
4234 | case 0: | |
4235 | case 1: | |
4236 | case 2: | |
4237 | case 3: | |
4238 | case 4: | |
4239 | case 5: | |
4240 | case 6: | |
4241 | extra = fm_config_txt[info]; | |
4242 | break; | |
4243 | case 8: | |
4244 | extra = fm_config_txt[info]; | |
4245 | if (ppd->port_error_action & | |
4246 | OPA_PI_MASK_FM_CFG_UNSUPPORTED_VL_MARKER) { | |
4247 | do_bounce = 1; | |
4248 | /* | |
4249 | * lcl_reason cannot be derived from info | |
4250 | * for this error | |
4251 | */ | |
4252 | lcl_reason = | |
4253 | OPA_LINKDOWN_REASON_UNSUPPORTED_VL_MARKER; | |
4254 | } | |
4255 | break; | |
4256 | default: | |
4257 | reason_valid = 0; | |
4258 | snprintf(buf, sizeof(buf), "reserved%lld", info); | |
4259 | extra = buf; | |
4260 | break; | |
4261 | } | |
4262 | ||
4263 | if (reason_valid && !do_bounce) { | |
4264 | do_bounce = ppd->port_error_action & | |
4265 | (1 << (OPA_LDR_FMCONFIG_OFFSET + info)); | |
4266 | lcl_reason = info + OPA_LINKDOWN_REASON_BAD_HEAD_DIST; | |
4267 | } | |
4268 | ||
4269 | /* just report this */ | |
4270 | dd_dev_info(dd, "DCC Error: fmconfig error: %s\n", extra); | |
4271 | reg &= ~DCC_ERR_FLG_FMCONFIG_ERR_SMASK; | |
4272 | } | |
4273 | ||
4274 | if (reg & DCC_ERR_FLG_RCVPORT_ERR_SMASK) { | |
4275 | u8 reason_valid = 1; | |
4276 | ||
4277 | info = read_csr(dd, DCC_ERR_INFO_PORTRCV); | |
4278 | hdr0 = read_csr(dd, DCC_ERR_INFO_PORTRCV_HDR0); | |
4279 | hdr1 = read_csr(dd, DCC_ERR_INFO_PORTRCV_HDR1); | |
4280 | if (!(dd->err_info_rcvport.status_and_code & | |
4281 | OPA_EI_STATUS_SMASK)) { | |
4282 | dd->err_info_rcvport.status_and_code = | |
4283 | info & OPA_EI_CODE_SMASK; | |
4284 | /* set status bit */ | |
4285 | dd->err_info_rcvport.status_and_code |= | |
4286 | OPA_EI_STATUS_SMASK; | |
4287 | /* save first 2 flits in the packet that caused | |
4288 | * the error */ | |
4289 | dd->err_info_rcvport.packet_flit1 = hdr0; | |
4290 | dd->err_info_rcvport.packet_flit2 = hdr1; | |
4291 | } | |
4292 | switch (info) { | |
4293 | case 1: | |
4294 | case 2: | |
4295 | case 3: | |
4296 | case 4: | |
4297 | case 5: | |
4298 | case 6: | |
4299 | case 7: | |
4300 | case 9: | |
4301 | case 11: | |
4302 | case 12: | |
4303 | extra = port_rcv_txt[info]; | |
4304 | break; | |
4305 | default: | |
4306 | reason_valid = 0; | |
4307 | snprintf(buf, sizeof(buf), "reserved%lld", info); | |
4308 | extra = buf; | |
4309 | break; | |
4310 | } | |
4311 | ||
4312 | if (reason_valid && !do_bounce) { | |
4313 | do_bounce = ppd->port_error_action & | |
4314 | (1 << (OPA_LDR_PORTRCV_OFFSET + info)); | |
4315 | lcl_reason = info + OPA_LINKDOWN_REASON_RCV_ERROR_0; | |
4316 | } | |
4317 | ||
4318 | /* just report this */ | |
4319 | dd_dev_info(dd, "DCC Error: PortRcv error: %s\n", extra); | |
4320 | dd_dev_info(dd, " hdr0 0x%llx, hdr1 0x%llx\n", | |
4321 | hdr0, hdr1); | |
4322 | ||
4323 | reg &= ~DCC_ERR_FLG_RCVPORT_ERR_SMASK; | |
4324 | } | |
4325 | ||
4326 | if (reg & DCC_ERR_FLG_EN_CSR_ACCESS_BLOCKED_UC_SMASK) { | |
4327 | /* informative only */ | |
4328 | dd_dev_info(dd, "8051 access to LCB blocked\n"); | |
4329 | reg &= ~DCC_ERR_FLG_EN_CSR_ACCESS_BLOCKED_UC_SMASK; | |
4330 | } | |
4331 | if (reg & DCC_ERR_FLG_EN_CSR_ACCESS_BLOCKED_HOST_SMASK) { | |
4332 | /* informative only */ | |
4333 | dd_dev_info(dd, "host access to LCB blocked\n"); | |
4334 | reg &= ~DCC_ERR_FLG_EN_CSR_ACCESS_BLOCKED_HOST_SMASK; | |
4335 | } | |
4336 | ||
4337 | /* report any remaining errors */ | |
4338 | if (reg) | |
4339 | dd_dev_info(dd, "DCC Error: %s\n", | |
4340 | dcc_err_string(buf, sizeof(buf), reg)); | |
4341 | ||
4342 | if (lcl_reason == 0) | |
4343 | lcl_reason = OPA_LINKDOWN_REASON_UNKNOWN; | |
4344 | ||
4345 | if (do_bounce) { | |
4346 | dd_dev_info(dd, "%s: PortErrorAction bounce\n", __func__); | |
4347 | set_link_down_reason(ppd, lcl_reason, 0, lcl_reason); | |
4348 | queue_work(ppd->hfi1_wq, &ppd->link_bounce_work); | |
4349 | } | |
4350 | } | |
4351 | ||
4352 | static void handle_lcb_err(struct hfi1_devdata *dd, u32 unused, u64 reg) | |
4353 | { | |
4354 | char buf[96]; | |
4355 | ||
4356 | dd_dev_info(dd, "LCB Error: %s\n", | |
4357 | lcb_err_string(buf, sizeof(buf), reg)); | |
4358 | } | |
4359 | ||
4360 | /* | |
4361 | * CCE block DC interrupt. Source is < 8. | |
4362 | */ | |
4363 | static void is_dc_int(struct hfi1_devdata *dd, unsigned int source) | |
4364 | { | |
4365 | const struct err_reg_info *eri = &dc_errs[source]; | |
4366 | ||
4367 | if (eri->handler) { | |
4368 | interrupt_clear_down(dd, 0, eri); | |
4369 | } else if (source == 3 /* dc_lbm_int */) { | |
4370 | /* | |
4371 | * This indicates that a parity error has occurred on the | |
4372 | * address/control lines presented to the LBM. The error | |
4373 | * is a single pulse, there is no associated error flag, | |
4374 | * and it is non-maskable. This is because if a parity | |
4375 | * error occurs on the request the request is dropped. | |
4376 | * This should never occur, but it is nice to know if it | |
4377 | * ever does. | |
4378 | */ | |
4379 | dd_dev_err(dd, "Parity error in DC LBM block\n"); | |
4380 | } else { | |
4381 | dd_dev_err(dd, "Invalid DC interrupt %u\n", source); | |
4382 | } | |
4383 | } | |
4384 | ||
4385 | /* | |
4386 | * TX block send credit interrupt. Source is < 160. | |
4387 | */ | |
4388 | static void is_send_credit_int(struct hfi1_devdata *dd, unsigned int source) | |
4389 | { | |
4390 | sc_group_release_update(dd, source); | |
4391 | } | |
4392 | ||
4393 | /* | |
4394 | * TX block SDMA interrupt. Source is < 48. | |
4395 | * | |
4396 | * SDMA interrupts are grouped by type: | |
4397 | * | |
4398 | * 0 - N-1 = SDma | |
4399 | * N - 2N-1 = SDmaProgress | |
4400 | * 2N - 3N-1 = SDmaIdle | |
4401 | */ | |
4402 | static void is_sdma_eng_int(struct hfi1_devdata *dd, unsigned int source) | |
4403 | { | |
4404 | /* what interrupt */ | |
4405 | unsigned int what = source / TXE_NUM_SDMA_ENGINES; | |
4406 | /* which engine */ | |
4407 | unsigned int which = source % TXE_NUM_SDMA_ENGINES; | |
4408 | ||
4409 | #ifdef CONFIG_SDMA_VERBOSITY | |
4410 | dd_dev_err(dd, "CONFIG SDMA(%u) %s:%d %s()\n", which, | |
4411 | slashstrip(__FILE__), __LINE__, __func__); | |
4412 | sdma_dumpstate(&dd->per_sdma[which]); | |
4413 | #endif | |
4414 | ||
4415 | if (likely(what < 3 && which < dd->num_sdma)) { | |
4416 | sdma_engine_interrupt(&dd->per_sdma[which], 1ull << source); | |
4417 | } else { | |
4418 | /* should not happen */ | |
4419 | dd_dev_err(dd, "Invalid SDMA interrupt 0x%x\n", source); | |
4420 | } | |
4421 | } | |
4422 | ||
4423 | /* | |
4424 | * RX block receive available interrupt. Source is < 160. | |
4425 | */ | |
4426 | static void is_rcv_avail_int(struct hfi1_devdata *dd, unsigned int source) | |
4427 | { | |
4428 | struct hfi1_ctxtdata *rcd; | |
4429 | char *err_detail; | |
4430 | ||
4431 | if (likely(source < dd->num_rcv_contexts)) { | |
4432 | rcd = dd->rcd[source]; | |
4433 | if (rcd) { | |
4434 | if (source < dd->first_user_ctxt) | |
f4f30031 | 4435 | rcd->do_interrupt(rcd, 0); |
77241056 MM |
4436 | else |
4437 | handle_user_interrupt(rcd); | |
4438 | return; /* OK */ | |
4439 | } | |
4440 | /* received an interrupt, but no rcd */ | |
4441 | err_detail = "dataless"; | |
4442 | } else { | |
4443 | /* received an interrupt, but are not using that context */ | |
4444 | err_detail = "out of range"; | |
4445 | } | |
4446 | dd_dev_err(dd, "unexpected %s receive available context interrupt %u\n", | |
4447 | err_detail, source); | |
4448 | } | |
4449 | ||
4450 | /* | |
4451 | * RX block receive urgent interrupt. Source is < 160. | |
4452 | */ | |
4453 | static void is_rcv_urgent_int(struct hfi1_devdata *dd, unsigned int source) | |
4454 | { | |
4455 | struct hfi1_ctxtdata *rcd; | |
4456 | char *err_detail; | |
4457 | ||
4458 | if (likely(source < dd->num_rcv_contexts)) { | |
4459 | rcd = dd->rcd[source]; | |
4460 | if (rcd) { | |
4461 | /* only pay attention to user urgent interrupts */ | |
4462 | if (source >= dd->first_user_ctxt) | |
4463 | handle_user_interrupt(rcd); | |
4464 | return; /* OK */ | |
4465 | } | |
4466 | /* received an interrupt, but no rcd */ | |
4467 | err_detail = "dataless"; | |
4468 | } else { | |
4469 | /* received an interrupt, but are not using that context */ | |
4470 | err_detail = "out of range"; | |
4471 | } | |
4472 | dd_dev_err(dd, "unexpected %s receive urgent context interrupt %u\n", | |
4473 | err_detail, source); | |
4474 | } | |
4475 | ||
4476 | /* | |
4477 | * Reserved range interrupt. Should not be called in normal operation. | |
4478 | */ | |
4479 | static void is_reserved_int(struct hfi1_devdata *dd, unsigned int source) | |
4480 | { | |
4481 | char name[64]; | |
4482 | ||
4483 | dd_dev_err(dd, "unexpected %s interrupt\n", | |
4484 | is_reserved_name(name, sizeof(name), source)); | |
4485 | } | |
4486 | ||
4487 | static const struct is_table is_table[] = { | |
4488 | /* start end | |
4489 | name func interrupt func */ | |
4490 | { IS_GENERAL_ERR_START, IS_GENERAL_ERR_END, | |
4491 | is_misc_err_name, is_misc_err_int }, | |
4492 | { IS_SDMAENG_ERR_START, IS_SDMAENG_ERR_END, | |
4493 | is_sdma_eng_err_name, is_sdma_eng_err_int }, | |
4494 | { IS_SENDCTXT_ERR_START, IS_SENDCTXT_ERR_END, | |
4495 | is_sendctxt_err_name, is_sendctxt_err_int }, | |
4496 | { IS_SDMA_START, IS_SDMA_END, | |
4497 | is_sdma_eng_name, is_sdma_eng_int }, | |
4498 | { IS_VARIOUS_START, IS_VARIOUS_END, | |
4499 | is_various_name, is_various_int }, | |
4500 | { IS_DC_START, IS_DC_END, | |
4501 | is_dc_name, is_dc_int }, | |
4502 | { IS_RCVAVAIL_START, IS_RCVAVAIL_END, | |
4503 | is_rcv_avail_name, is_rcv_avail_int }, | |
4504 | { IS_RCVURGENT_START, IS_RCVURGENT_END, | |
4505 | is_rcv_urgent_name, is_rcv_urgent_int }, | |
4506 | { IS_SENDCREDIT_START, IS_SENDCREDIT_END, | |
4507 | is_send_credit_name, is_send_credit_int}, | |
4508 | { IS_RESERVED_START, IS_RESERVED_END, | |
4509 | is_reserved_name, is_reserved_int}, | |
4510 | }; | |
4511 | ||
4512 | /* | |
4513 | * Interrupt source interrupt - called when the given source has an interrupt. | |
4514 | * Source is a bit index into an array of 64-bit integers. | |
4515 | */ | |
4516 | static void is_interrupt(struct hfi1_devdata *dd, unsigned int source) | |
4517 | { | |
4518 | const struct is_table *entry; | |
4519 | ||
4520 | /* avoids a double compare by walking the table in-order */ | |
4521 | for (entry = &is_table[0]; entry->is_name; entry++) { | |
4522 | if (source < entry->end) { | |
4523 | trace_hfi1_interrupt(dd, entry, source); | |
4524 | entry->is_int(dd, source - entry->start); | |
4525 | return; | |
4526 | } | |
4527 | } | |
4528 | /* fell off the end */ | |
4529 | dd_dev_err(dd, "invalid interrupt source %u\n", source); | |
4530 | } | |
4531 | ||
4532 | /* | |
4533 | * General interrupt handler. This is able to correctly handle | |
4534 | * all interrupts in case INTx is used. | |
4535 | */ | |
4536 | static irqreturn_t general_interrupt(int irq, void *data) | |
4537 | { | |
4538 | struct hfi1_devdata *dd = data; | |
4539 | u64 regs[CCE_NUM_INT_CSRS]; | |
4540 | u32 bit; | |
4541 | int i; | |
4542 | ||
4543 | this_cpu_inc(*dd->int_counter); | |
4544 | ||
4545 | /* phase 1: scan and clear all handled interrupts */ | |
4546 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) { | |
4547 | if (dd->gi_mask[i] == 0) { | |
4548 | regs[i] = 0; /* used later */ | |
4549 | continue; | |
4550 | } | |
4551 | regs[i] = read_csr(dd, CCE_INT_STATUS + (8 * i)) & | |
4552 | dd->gi_mask[i]; | |
4553 | /* only clear if anything is set */ | |
4554 | if (regs[i]) | |
4555 | write_csr(dd, CCE_INT_CLEAR + (8 * i), regs[i]); | |
4556 | } | |
4557 | ||
4558 | /* phase 2: call the appropriate handler */ | |
4559 | for_each_set_bit(bit, (unsigned long *)®s[0], | |
4560 | CCE_NUM_INT_CSRS*64) { | |
4561 | is_interrupt(dd, bit); | |
4562 | } | |
4563 | ||
4564 | return IRQ_HANDLED; | |
4565 | } | |
4566 | ||
4567 | static irqreturn_t sdma_interrupt(int irq, void *data) | |
4568 | { | |
4569 | struct sdma_engine *sde = data; | |
4570 | struct hfi1_devdata *dd = sde->dd; | |
4571 | u64 status; | |
4572 | ||
4573 | #ifdef CONFIG_SDMA_VERBOSITY | |
4574 | dd_dev_err(dd, "CONFIG SDMA(%u) %s:%d %s()\n", sde->this_idx, | |
4575 | slashstrip(__FILE__), __LINE__, __func__); | |
4576 | sdma_dumpstate(sde); | |
4577 | #endif | |
4578 | ||
4579 | this_cpu_inc(*dd->int_counter); | |
4580 | ||
4581 | /* This read_csr is really bad in the hot path */ | |
4582 | status = read_csr(dd, | |
4583 | CCE_INT_STATUS + (8*(IS_SDMA_START/64))) | |
4584 | & sde->imask; | |
4585 | if (likely(status)) { | |
4586 | /* clear the interrupt(s) */ | |
4587 | write_csr(dd, | |
4588 | CCE_INT_CLEAR + (8*(IS_SDMA_START/64)), | |
4589 | status); | |
4590 | ||
4591 | /* handle the interrupt(s) */ | |
4592 | sdma_engine_interrupt(sde, status); | |
4593 | } else | |
4594 | dd_dev_err(dd, "SDMA engine %u interrupt, but no status bits set\n", | |
4595 | sde->this_idx); | |
4596 | ||
4597 | return IRQ_HANDLED; | |
4598 | } | |
4599 | ||
4600 | /* | |
f4f30031 DL |
4601 | * Clear the receive interrupt, forcing the write and making sure |
4602 | * we have data from the chip, pushing everything in front of it | |
4603 | * back to the host. | |
4604 | */ | |
4605 | static inline void clear_recv_intr(struct hfi1_ctxtdata *rcd) | |
4606 | { | |
4607 | struct hfi1_devdata *dd = rcd->dd; | |
4608 | u32 addr = CCE_INT_CLEAR + (8 * rcd->ireg); | |
4609 | ||
4610 | mmiowb(); /* make sure everything before is written */ | |
4611 | write_csr(dd, addr, rcd->imask); | |
4612 | /* force the above write on the chip and get a value back */ | |
4613 | (void)read_csr(dd, addr); | |
4614 | } | |
4615 | ||
4616 | /* force the receive interrupt */ | |
4617 | static inline void force_recv_intr(struct hfi1_ctxtdata *rcd) | |
4618 | { | |
4619 | write_csr(rcd->dd, CCE_INT_FORCE + (8 * rcd->ireg), rcd->imask); | |
4620 | } | |
4621 | ||
4622 | /* return non-zero if a packet is present */ | |
4623 | static inline int check_packet_present(struct hfi1_ctxtdata *rcd) | |
4624 | { | |
4625 | if (!HFI1_CAP_IS_KSET(DMA_RTAIL)) | |
4626 | return (rcd->seq_cnt == | |
4627 | rhf_rcv_seq(rhf_to_cpu(get_rhf_addr(rcd)))); | |
4628 | ||
4629 | /* else is RDMA rtail */ | |
4630 | return (rcd->head != get_rcvhdrtail(rcd)); | |
4631 | } | |
4632 | ||
4633 | /* | |
4634 | * Receive packet IRQ handler. This routine expects to be on its own IRQ. | |
4635 | * This routine will try to handle packets immediately (latency), but if | |
4636 | * it finds too many, it will invoke the thread handler (bandwitdh). The | |
4637 | * chip receive interupt is *not* cleared down until this or the thread (if | |
4638 | * invoked) is finished. The intent is to avoid extra interrupts while we | |
4639 | * are processing packets anyway. | |
77241056 MM |
4640 | */ |
4641 | static irqreturn_t receive_context_interrupt(int irq, void *data) | |
4642 | { | |
4643 | struct hfi1_ctxtdata *rcd = data; | |
4644 | struct hfi1_devdata *dd = rcd->dd; | |
f4f30031 DL |
4645 | int disposition; |
4646 | int present; | |
77241056 MM |
4647 | |
4648 | trace_hfi1_receive_interrupt(dd, rcd->ctxt); | |
4649 | this_cpu_inc(*dd->int_counter); | |
4650 | ||
f4f30031 DL |
4651 | /* receive interrupt remains blocked while processing packets */ |
4652 | disposition = rcd->do_interrupt(rcd, 0); | |
77241056 | 4653 | |
f4f30031 DL |
4654 | /* |
4655 | * Too many packets were seen while processing packets in this | |
4656 | * IRQ handler. Invoke the handler thread. The receive interrupt | |
4657 | * remains blocked. | |
4658 | */ | |
4659 | if (disposition == RCV_PKT_LIMIT) | |
4660 | return IRQ_WAKE_THREAD; | |
4661 | ||
4662 | /* | |
4663 | * The packet processor detected no more packets. Clear the receive | |
4664 | * interrupt and recheck for a packet packet that may have arrived | |
4665 | * after the previous check and interrupt clear. If a packet arrived, | |
4666 | * force another interrupt. | |
4667 | */ | |
4668 | clear_recv_intr(rcd); | |
4669 | present = check_packet_present(rcd); | |
4670 | if (present) | |
4671 | force_recv_intr(rcd); | |
4672 | ||
4673 | return IRQ_HANDLED; | |
4674 | } | |
4675 | ||
4676 | /* | |
4677 | * Receive packet thread handler. This expects to be invoked with the | |
4678 | * receive interrupt still blocked. | |
4679 | */ | |
4680 | static irqreturn_t receive_context_thread(int irq, void *data) | |
4681 | { | |
4682 | struct hfi1_ctxtdata *rcd = data; | |
4683 | int present; | |
4684 | ||
4685 | /* receive interrupt is still blocked from the IRQ handler */ | |
4686 | (void)rcd->do_interrupt(rcd, 1); | |
4687 | ||
4688 | /* | |
4689 | * The packet processor will only return if it detected no more | |
4690 | * packets. Hold IRQs here so we can safely clear the interrupt and | |
4691 | * recheck for a packet that may have arrived after the previous | |
4692 | * check and the interrupt clear. If a packet arrived, force another | |
4693 | * interrupt. | |
4694 | */ | |
4695 | local_irq_disable(); | |
4696 | clear_recv_intr(rcd); | |
4697 | present = check_packet_present(rcd); | |
4698 | if (present) | |
4699 | force_recv_intr(rcd); | |
4700 | local_irq_enable(); | |
77241056 MM |
4701 | |
4702 | return IRQ_HANDLED; | |
4703 | } | |
4704 | ||
4705 | /* ========================================================================= */ | |
4706 | ||
4707 | u32 read_physical_state(struct hfi1_devdata *dd) | |
4708 | { | |
4709 | u64 reg; | |
4710 | ||
4711 | reg = read_csr(dd, DC_DC8051_STS_CUR_STATE); | |
4712 | return (reg >> DC_DC8051_STS_CUR_STATE_PORT_SHIFT) | |
4713 | & DC_DC8051_STS_CUR_STATE_PORT_MASK; | |
4714 | } | |
4715 | ||
4716 | static u32 read_logical_state(struct hfi1_devdata *dd) | |
4717 | { | |
4718 | u64 reg; | |
4719 | ||
4720 | reg = read_csr(dd, DCC_CFG_PORT_CONFIG); | |
4721 | return (reg >> DCC_CFG_PORT_CONFIG_LINK_STATE_SHIFT) | |
4722 | & DCC_CFG_PORT_CONFIG_LINK_STATE_MASK; | |
4723 | } | |
4724 | ||
4725 | static void set_logical_state(struct hfi1_devdata *dd, u32 chip_lstate) | |
4726 | { | |
4727 | u64 reg; | |
4728 | ||
4729 | reg = read_csr(dd, DCC_CFG_PORT_CONFIG); | |
4730 | /* clear current state, set new state */ | |
4731 | reg &= ~DCC_CFG_PORT_CONFIG_LINK_STATE_SMASK; | |
4732 | reg |= (u64)chip_lstate << DCC_CFG_PORT_CONFIG_LINK_STATE_SHIFT; | |
4733 | write_csr(dd, DCC_CFG_PORT_CONFIG, reg); | |
4734 | } | |
4735 | ||
4736 | /* | |
4737 | * Use the 8051 to read a LCB CSR. | |
4738 | */ | |
4739 | static int read_lcb_via_8051(struct hfi1_devdata *dd, u32 addr, u64 *data) | |
4740 | { | |
4741 | u32 regno; | |
4742 | int ret; | |
4743 | ||
4744 | if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR) { | |
4745 | if (acquire_lcb_access(dd, 0) == 0) { | |
4746 | *data = read_csr(dd, addr); | |
4747 | release_lcb_access(dd, 0); | |
4748 | return 0; | |
4749 | } | |
4750 | return -EBUSY; | |
4751 | } | |
4752 | ||
4753 | /* register is an index of LCB registers: (offset - base) / 8 */ | |
4754 | regno = (addr - DC_LCB_CFG_RUN) >> 3; | |
4755 | ret = do_8051_command(dd, HCMD_READ_LCB_CSR, regno, data); | |
4756 | if (ret != HCMD_SUCCESS) | |
4757 | return -EBUSY; | |
4758 | return 0; | |
4759 | } | |
4760 | ||
4761 | /* | |
4762 | * Read an LCB CSR. Access may not be in host control, so check. | |
4763 | * Return 0 on success, -EBUSY on failure. | |
4764 | */ | |
4765 | int read_lcb_csr(struct hfi1_devdata *dd, u32 addr, u64 *data) | |
4766 | { | |
4767 | struct hfi1_pportdata *ppd = dd->pport; | |
4768 | ||
4769 | /* if up, go through the 8051 for the value */ | |
4770 | if (ppd->host_link_state & HLS_UP) | |
4771 | return read_lcb_via_8051(dd, addr, data); | |
4772 | /* if going up or down, no access */ | |
4773 | if (ppd->host_link_state & (HLS_GOING_UP | HLS_GOING_OFFLINE)) | |
4774 | return -EBUSY; | |
4775 | /* otherwise, host has access */ | |
4776 | *data = read_csr(dd, addr); | |
4777 | return 0; | |
4778 | } | |
4779 | ||
4780 | /* | |
4781 | * Use the 8051 to write a LCB CSR. | |
4782 | */ | |
4783 | static int write_lcb_via_8051(struct hfi1_devdata *dd, u32 addr, u64 data) | |
4784 | { | |
3bf40d65 DL |
4785 | u32 regno; |
4786 | int ret; | |
77241056 | 4787 | |
3bf40d65 DL |
4788 | if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR || |
4789 | (dd->dc8051_ver < dc8051_ver(0, 20))) { | |
4790 | if (acquire_lcb_access(dd, 0) == 0) { | |
4791 | write_csr(dd, addr, data); | |
4792 | release_lcb_access(dd, 0); | |
4793 | return 0; | |
4794 | } | |
4795 | return -EBUSY; | |
77241056 | 4796 | } |
3bf40d65 DL |
4797 | |
4798 | /* register is an index of LCB registers: (offset - base) / 8 */ | |
4799 | regno = (addr - DC_LCB_CFG_RUN) >> 3; | |
4800 | ret = do_8051_command(dd, HCMD_WRITE_LCB_CSR, regno, &data); | |
4801 | if (ret != HCMD_SUCCESS) | |
4802 | return -EBUSY; | |
4803 | return 0; | |
77241056 MM |
4804 | } |
4805 | ||
4806 | /* | |
4807 | * Write an LCB CSR. Access may not be in host control, so check. | |
4808 | * Return 0 on success, -EBUSY on failure. | |
4809 | */ | |
4810 | int write_lcb_csr(struct hfi1_devdata *dd, u32 addr, u64 data) | |
4811 | { | |
4812 | struct hfi1_pportdata *ppd = dd->pport; | |
4813 | ||
4814 | /* if up, go through the 8051 for the value */ | |
4815 | if (ppd->host_link_state & HLS_UP) | |
4816 | return write_lcb_via_8051(dd, addr, data); | |
4817 | /* if going up or down, no access */ | |
4818 | if (ppd->host_link_state & (HLS_GOING_UP | HLS_GOING_OFFLINE)) | |
4819 | return -EBUSY; | |
4820 | /* otherwise, host has access */ | |
4821 | write_csr(dd, addr, data); | |
4822 | return 0; | |
4823 | } | |
4824 | ||
4825 | /* | |
4826 | * Returns: | |
4827 | * < 0 = Linux error, not able to get access | |
4828 | * > 0 = 8051 command RETURN_CODE | |
4829 | */ | |
4830 | static int do_8051_command( | |
4831 | struct hfi1_devdata *dd, | |
4832 | u32 type, | |
4833 | u64 in_data, | |
4834 | u64 *out_data) | |
4835 | { | |
4836 | u64 reg, completed; | |
4837 | int return_code; | |
4838 | unsigned long flags; | |
4839 | unsigned long timeout; | |
4840 | ||
4841 | hfi1_cdbg(DC8051, "type %d, data 0x%012llx", type, in_data); | |
4842 | ||
4843 | /* | |
4844 | * Alternative to holding the lock for a long time: | |
4845 | * - keep busy wait - have other users bounce off | |
4846 | */ | |
4847 | spin_lock_irqsave(&dd->dc8051_lock, flags); | |
4848 | ||
4849 | /* We can't send any commands to the 8051 if it's in reset */ | |
4850 | if (dd->dc_shutdown) { | |
4851 | return_code = -ENODEV; | |
4852 | goto fail; | |
4853 | } | |
4854 | ||
4855 | /* | |
4856 | * If an 8051 host command timed out previously, then the 8051 is | |
4857 | * stuck. | |
4858 | * | |
4859 | * On first timeout, attempt to reset and restart the entire DC | |
4860 | * block (including 8051). (Is this too big of a hammer?) | |
4861 | * | |
4862 | * If the 8051 times out a second time, the reset did not bring it | |
4863 | * back to healthy life. In that case, fail any subsequent commands. | |
4864 | */ | |
4865 | if (dd->dc8051_timed_out) { | |
4866 | if (dd->dc8051_timed_out > 1) { | |
4867 | dd_dev_err(dd, | |
4868 | "Previous 8051 host command timed out, skipping command %u\n", | |
4869 | type); | |
4870 | return_code = -ENXIO; | |
4871 | goto fail; | |
4872 | } | |
4873 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
4874 | dc_shutdown(dd); | |
4875 | dc_start(dd); | |
4876 | spin_lock_irqsave(&dd->dc8051_lock, flags); | |
4877 | } | |
4878 | ||
4879 | /* | |
4880 | * If there is no timeout, then the 8051 command interface is | |
4881 | * waiting for a command. | |
4882 | */ | |
4883 | ||
3bf40d65 DL |
4884 | /* |
4885 | * When writing a LCB CSR, out_data contains the full value to | |
4886 | * to be written, while in_data contains the relative LCB | |
4887 | * address in 7:0. Do the work here, rather than the caller, | |
4888 | * of distrubting the write data to where it needs to go: | |
4889 | * | |
4890 | * Write data | |
4891 | * 39:00 -> in_data[47:8] | |
4892 | * 47:40 -> DC8051_CFG_EXT_DEV_0.RETURN_CODE | |
4893 | * 63:48 -> DC8051_CFG_EXT_DEV_0.RSP_DATA | |
4894 | */ | |
4895 | if (type == HCMD_WRITE_LCB_CSR) { | |
4896 | in_data |= ((*out_data) & 0xffffffffffull) << 8; | |
4897 | reg = ((((*out_data) >> 40) & 0xff) << | |
4898 | DC_DC8051_CFG_EXT_DEV_0_RETURN_CODE_SHIFT) | |
4899 | | ((((*out_data) >> 48) & 0xffff) << | |
4900 | DC_DC8051_CFG_EXT_DEV_0_RSP_DATA_SHIFT); | |
4901 | write_csr(dd, DC_DC8051_CFG_EXT_DEV_0, reg); | |
4902 | } | |
4903 | ||
77241056 MM |
4904 | /* |
4905 | * Do two writes: the first to stabilize the type and req_data, the | |
4906 | * second to activate. | |
4907 | */ | |
4908 | reg = ((u64)type & DC_DC8051_CFG_HOST_CMD_0_REQ_TYPE_MASK) | |
4909 | << DC_DC8051_CFG_HOST_CMD_0_REQ_TYPE_SHIFT | |
4910 | | (in_data & DC_DC8051_CFG_HOST_CMD_0_REQ_DATA_MASK) | |
4911 | << DC_DC8051_CFG_HOST_CMD_0_REQ_DATA_SHIFT; | |
4912 | write_csr(dd, DC_DC8051_CFG_HOST_CMD_0, reg); | |
4913 | reg |= DC_DC8051_CFG_HOST_CMD_0_REQ_NEW_SMASK; | |
4914 | write_csr(dd, DC_DC8051_CFG_HOST_CMD_0, reg); | |
4915 | ||
4916 | /* wait for completion, alternate: interrupt */ | |
4917 | timeout = jiffies + msecs_to_jiffies(DC8051_COMMAND_TIMEOUT); | |
4918 | while (1) { | |
4919 | reg = read_csr(dd, DC_DC8051_CFG_HOST_CMD_1); | |
4920 | completed = reg & DC_DC8051_CFG_HOST_CMD_1_COMPLETED_SMASK; | |
4921 | if (completed) | |
4922 | break; | |
4923 | if (time_after(jiffies, timeout)) { | |
4924 | dd->dc8051_timed_out++; | |
4925 | dd_dev_err(dd, "8051 host command %u timeout\n", type); | |
4926 | if (out_data) | |
4927 | *out_data = 0; | |
4928 | return_code = -ETIMEDOUT; | |
4929 | goto fail; | |
4930 | } | |
4931 | udelay(2); | |
4932 | } | |
4933 | ||
4934 | if (out_data) { | |
4935 | *out_data = (reg >> DC_DC8051_CFG_HOST_CMD_1_RSP_DATA_SHIFT) | |
4936 | & DC_DC8051_CFG_HOST_CMD_1_RSP_DATA_MASK; | |
4937 | if (type == HCMD_READ_LCB_CSR) { | |
4938 | /* top 16 bits are in a different register */ | |
4939 | *out_data |= (read_csr(dd, DC_DC8051_CFG_EXT_DEV_1) | |
4940 | & DC_DC8051_CFG_EXT_DEV_1_REQ_DATA_SMASK) | |
4941 | << (48 | |
4942 | - DC_DC8051_CFG_EXT_DEV_1_REQ_DATA_SHIFT); | |
4943 | } | |
4944 | } | |
4945 | return_code = (reg >> DC_DC8051_CFG_HOST_CMD_1_RETURN_CODE_SHIFT) | |
4946 | & DC_DC8051_CFG_HOST_CMD_1_RETURN_CODE_MASK; | |
4947 | dd->dc8051_timed_out = 0; | |
4948 | /* | |
4949 | * Clear command for next user. | |
4950 | */ | |
4951 | write_csr(dd, DC_DC8051_CFG_HOST_CMD_0, 0); | |
4952 | ||
4953 | fail: | |
4954 | spin_unlock_irqrestore(&dd->dc8051_lock, flags); | |
4955 | ||
4956 | return return_code; | |
4957 | } | |
4958 | ||
4959 | static int set_physical_link_state(struct hfi1_devdata *dd, u64 state) | |
4960 | { | |
4961 | return do_8051_command(dd, HCMD_CHANGE_PHY_STATE, state, NULL); | |
4962 | } | |
4963 | ||
4964 | static int load_8051_config(struct hfi1_devdata *dd, u8 field_id, | |
4965 | u8 lane_id, u32 config_data) | |
4966 | { | |
4967 | u64 data; | |
4968 | int ret; | |
4969 | ||
4970 | data = (u64)field_id << LOAD_DATA_FIELD_ID_SHIFT | |
4971 | | (u64)lane_id << LOAD_DATA_LANE_ID_SHIFT | |
4972 | | (u64)config_data << LOAD_DATA_DATA_SHIFT; | |
4973 | ret = do_8051_command(dd, HCMD_LOAD_CONFIG_DATA, data, NULL); | |
4974 | if (ret != HCMD_SUCCESS) { | |
4975 | dd_dev_err(dd, | |
4976 | "load 8051 config: field id %d, lane %d, err %d\n", | |
4977 | (int)field_id, (int)lane_id, ret); | |
4978 | } | |
4979 | return ret; | |
4980 | } | |
4981 | ||
4982 | /* | |
4983 | * Read the 8051 firmware "registers". Use the RAM directly. Always | |
4984 | * set the result, even on error. | |
4985 | * Return 0 on success, -errno on failure | |
4986 | */ | |
4987 | static int read_8051_config(struct hfi1_devdata *dd, u8 field_id, u8 lane_id, | |
4988 | u32 *result) | |
4989 | { | |
4990 | u64 big_data; | |
4991 | u32 addr; | |
4992 | int ret; | |
4993 | ||
4994 | /* address start depends on the lane_id */ | |
4995 | if (lane_id < 4) | |
4996 | addr = (4 * NUM_GENERAL_FIELDS) | |
4997 | + (lane_id * 4 * NUM_LANE_FIELDS); | |
4998 | else | |
4999 | addr = 0; | |
5000 | addr += field_id * 4; | |
5001 | ||
5002 | /* read is in 8-byte chunks, hardware will truncate the address down */ | |
5003 | ret = read_8051_data(dd, addr, 8, &big_data); | |
5004 | ||
5005 | if (ret == 0) { | |
5006 | /* extract the 4 bytes we want */ | |
5007 | if (addr & 0x4) | |
5008 | *result = (u32)(big_data >> 32); | |
5009 | else | |
5010 | *result = (u32)big_data; | |
5011 | } else { | |
5012 | *result = 0; | |
5013 | dd_dev_err(dd, "%s: direct read failed, lane %d, field %d!\n", | |
5014 | __func__, lane_id, field_id); | |
5015 | } | |
5016 | ||
5017 | return ret; | |
5018 | } | |
5019 | ||
5020 | static int write_vc_local_phy(struct hfi1_devdata *dd, u8 power_management, | |
5021 | u8 continuous) | |
5022 | { | |
5023 | u32 frame; | |
5024 | ||
5025 | frame = continuous << CONTINIOUS_REMOTE_UPDATE_SUPPORT_SHIFT | |
5026 | | power_management << POWER_MANAGEMENT_SHIFT; | |
5027 | return load_8051_config(dd, VERIFY_CAP_LOCAL_PHY, | |
5028 | GENERAL_CONFIG, frame); | |
5029 | } | |
5030 | ||
5031 | static int write_vc_local_fabric(struct hfi1_devdata *dd, u8 vau, u8 z, u8 vcu, | |
5032 | u16 vl15buf, u8 crc_sizes) | |
5033 | { | |
5034 | u32 frame; | |
5035 | ||
5036 | frame = (u32)vau << VAU_SHIFT | |
5037 | | (u32)z << Z_SHIFT | |
5038 | | (u32)vcu << VCU_SHIFT | |
5039 | | (u32)vl15buf << VL15BUF_SHIFT | |
5040 | | (u32)crc_sizes << CRC_SIZES_SHIFT; | |
5041 | return load_8051_config(dd, VERIFY_CAP_LOCAL_FABRIC, | |
5042 | GENERAL_CONFIG, frame); | |
5043 | } | |
5044 | ||
5045 | static void read_vc_local_link_width(struct hfi1_devdata *dd, u8 *misc_bits, | |
5046 | u8 *flag_bits, u16 *link_widths) | |
5047 | { | |
5048 | u32 frame; | |
5049 | ||
5050 | read_8051_config(dd, VERIFY_CAP_LOCAL_LINK_WIDTH, GENERAL_CONFIG, | |
5051 | &frame); | |
5052 | *misc_bits = (frame >> MISC_CONFIG_BITS_SHIFT) & MISC_CONFIG_BITS_MASK; | |
5053 | *flag_bits = (frame >> LOCAL_FLAG_BITS_SHIFT) & LOCAL_FLAG_BITS_MASK; | |
5054 | *link_widths = (frame >> LINK_WIDTH_SHIFT) & LINK_WIDTH_MASK; | |
5055 | } | |
5056 | ||
5057 | static int write_vc_local_link_width(struct hfi1_devdata *dd, | |
5058 | u8 misc_bits, | |
5059 | u8 flag_bits, | |
5060 | u16 link_widths) | |
5061 | { | |
5062 | u32 frame; | |
5063 | ||
5064 | frame = (u32)misc_bits << MISC_CONFIG_BITS_SHIFT | |
5065 | | (u32)flag_bits << LOCAL_FLAG_BITS_SHIFT | |
5066 | | (u32)link_widths << LINK_WIDTH_SHIFT; | |
5067 | return load_8051_config(dd, VERIFY_CAP_LOCAL_LINK_WIDTH, GENERAL_CONFIG, | |
5068 | frame); | |
5069 | } | |
5070 | ||
5071 | static int write_local_device_id(struct hfi1_devdata *dd, u16 device_id, | |
5072 | u8 device_rev) | |
5073 | { | |
5074 | u32 frame; | |
5075 | ||
5076 | frame = ((u32)device_id << LOCAL_DEVICE_ID_SHIFT) | |
5077 | | ((u32)device_rev << LOCAL_DEVICE_REV_SHIFT); | |
5078 | return load_8051_config(dd, LOCAL_DEVICE_ID, GENERAL_CONFIG, frame); | |
5079 | } | |
5080 | ||
5081 | static void read_remote_device_id(struct hfi1_devdata *dd, u16 *device_id, | |
5082 | u8 *device_rev) | |
5083 | { | |
5084 | u32 frame; | |
5085 | ||
5086 | read_8051_config(dd, REMOTE_DEVICE_ID, GENERAL_CONFIG, &frame); | |
5087 | *device_id = (frame >> REMOTE_DEVICE_ID_SHIFT) & REMOTE_DEVICE_ID_MASK; | |
5088 | *device_rev = (frame >> REMOTE_DEVICE_REV_SHIFT) | |
5089 | & REMOTE_DEVICE_REV_MASK; | |
5090 | } | |
5091 | ||
5092 | void read_misc_status(struct hfi1_devdata *dd, u8 *ver_a, u8 *ver_b) | |
5093 | { | |
5094 | u32 frame; | |
5095 | ||
5096 | read_8051_config(dd, MISC_STATUS, GENERAL_CONFIG, &frame); | |
5097 | *ver_a = (frame >> STS_FM_VERSION_A_SHIFT) & STS_FM_VERSION_A_MASK; | |
5098 | *ver_b = (frame >> STS_FM_VERSION_B_SHIFT) & STS_FM_VERSION_B_MASK; | |
5099 | } | |
5100 | ||
5101 | static void read_vc_remote_phy(struct hfi1_devdata *dd, u8 *power_management, | |
5102 | u8 *continuous) | |
5103 | { | |
5104 | u32 frame; | |
5105 | ||
5106 | read_8051_config(dd, VERIFY_CAP_REMOTE_PHY, GENERAL_CONFIG, &frame); | |
5107 | *power_management = (frame >> POWER_MANAGEMENT_SHIFT) | |
5108 | & POWER_MANAGEMENT_MASK; | |
5109 | *continuous = (frame >> CONTINIOUS_REMOTE_UPDATE_SUPPORT_SHIFT) | |
5110 | & CONTINIOUS_REMOTE_UPDATE_SUPPORT_MASK; | |
5111 | } | |
5112 | ||
5113 | static void read_vc_remote_fabric(struct hfi1_devdata *dd, u8 *vau, u8 *z, | |
5114 | u8 *vcu, u16 *vl15buf, u8 *crc_sizes) | |
5115 | { | |
5116 | u32 frame; | |
5117 | ||
5118 | read_8051_config(dd, VERIFY_CAP_REMOTE_FABRIC, GENERAL_CONFIG, &frame); | |
5119 | *vau = (frame >> VAU_SHIFT) & VAU_MASK; | |
5120 | *z = (frame >> Z_SHIFT) & Z_MASK; | |
5121 | *vcu = (frame >> VCU_SHIFT) & VCU_MASK; | |
5122 | *vl15buf = (frame >> VL15BUF_SHIFT) & VL15BUF_MASK; | |
5123 | *crc_sizes = (frame >> CRC_SIZES_SHIFT) & CRC_SIZES_MASK; | |
5124 | } | |
5125 | ||
5126 | static void read_vc_remote_link_width(struct hfi1_devdata *dd, | |
5127 | u8 *remote_tx_rate, | |
5128 | u16 *link_widths) | |
5129 | { | |
5130 | u32 frame; | |
5131 | ||
5132 | read_8051_config(dd, VERIFY_CAP_REMOTE_LINK_WIDTH, GENERAL_CONFIG, | |
5133 | &frame); | |
5134 | *remote_tx_rate = (frame >> REMOTE_TX_RATE_SHIFT) | |
5135 | & REMOTE_TX_RATE_MASK; | |
5136 | *link_widths = (frame >> LINK_WIDTH_SHIFT) & LINK_WIDTH_MASK; | |
5137 | } | |
5138 | ||
5139 | static void read_local_lni(struct hfi1_devdata *dd, u8 *enable_lane_rx) | |
5140 | { | |
5141 | u32 frame; | |
5142 | ||
5143 | read_8051_config(dd, LOCAL_LNI_INFO, GENERAL_CONFIG, &frame); | |
5144 | *enable_lane_rx = (frame >> ENABLE_LANE_RX_SHIFT) & ENABLE_LANE_RX_MASK; | |
5145 | } | |
5146 | ||
5147 | static void read_mgmt_allowed(struct hfi1_devdata *dd, u8 *mgmt_allowed) | |
5148 | { | |
5149 | u32 frame; | |
5150 | ||
5151 | read_8051_config(dd, REMOTE_LNI_INFO, GENERAL_CONFIG, &frame); | |
5152 | *mgmt_allowed = (frame >> MGMT_ALLOWED_SHIFT) & MGMT_ALLOWED_MASK; | |
5153 | } | |
5154 | ||
5155 | static void read_last_local_state(struct hfi1_devdata *dd, u32 *lls) | |
5156 | { | |
5157 | read_8051_config(dd, LAST_LOCAL_STATE_COMPLETE, GENERAL_CONFIG, lls); | |
5158 | } | |
5159 | ||
5160 | static void read_last_remote_state(struct hfi1_devdata *dd, u32 *lrs) | |
5161 | { | |
5162 | read_8051_config(dd, LAST_REMOTE_STATE_COMPLETE, GENERAL_CONFIG, lrs); | |
5163 | } | |
5164 | ||
5165 | void hfi1_read_link_quality(struct hfi1_devdata *dd, u8 *link_quality) | |
5166 | { | |
5167 | u32 frame; | |
5168 | int ret; | |
5169 | ||
5170 | *link_quality = 0; | |
5171 | if (dd->pport->host_link_state & HLS_UP) { | |
5172 | ret = read_8051_config(dd, LINK_QUALITY_INFO, GENERAL_CONFIG, | |
5173 | &frame); | |
5174 | if (ret == 0) | |
5175 | *link_quality = (frame >> LINK_QUALITY_SHIFT) | |
5176 | & LINK_QUALITY_MASK; | |
5177 | } | |
5178 | } | |
5179 | ||
5180 | static void read_planned_down_reason_code(struct hfi1_devdata *dd, u8 *pdrrc) | |
5181 | { | |
5182 | u32 frame; | |
5183 | ||
5184 | read_8051_config(dd, LINK_QUALITY_INFO, GENERAL_CONFIG, &frame); | |
5185 | *pdrrc = (frame >> DOWN_REMOTE_REASON_SHIFT) & DOWN_REMOTE_REASON_MASK; | |
5186 | } | |
5187 | ||
5188 | static int read_tx_settings(struct hfi1_devdata *dd, | |
5189 | u8 *enable_lane_tx, | |
5190 | u8 *tx_polarity_inversion, | |
5191 | u8 *rx_polarity_inversion, | |
5192 | u8 *max_rate) | |
5193 | { | |
5194 | u32 frame; | |
5195 | int ret; | |
5196 | ||
5197 | ret = read_8051_config(dd, TX_SETTINGS, GENERAL_CONFIG, &frame); | |
5198 | *enable_lane_tx = (frame >> ENABLE_LANE_TX_SHIFT) | |
5199 | & ENABLE_LANE_TX_MASK; | |
5200 | *tx_polarity_inversion = (frame >> TX_POLARITY_INVERSION_SHIFT) | |
5201 | & TX_POLARITY_INVERSION_MASK; | |
5202 | *rx_polarity_inversion = (frame >> RX_POLARITY_INVERSION_SHIFT) | |
5203 | & RX_POLARITY_INVERSION_MASK; | |
5204 | *max_rate = (frame >> MAX_RATE_SHIFT) & MAX_RATE_MASK; | |
5205 | return ret; | |
5206 | } | |
5207 | ||
5208 | static int write_tx_settings(struct hfi1_devdata *dd, | |
5209 | u8 enable_lane_tx, | |
5210 | u8 tx_polarity_inversion, | |
5211 | u8 rx_polarity_inversion, | |
5212 | u8 max_rate) | |
5213 | { | |
5214 | u32 frame; | |
5215 | ||
5216 | /* no need to mask, all variable sizes match field widths */ | |
5217 | frame = enable_lane_tx << ENABLE_LANE_TX_SHIFT | |
5218 | | tx_polarity_inversion << TX_POLARITY_INVERSION_SHIFT | |
5219 | | rx_polarity_inversion << RX_POLARITY_INVERSION_SHIFT | |
5220 | | max_rate << MAX_RATE_SHIFT; | |
5221 | return load_8051_config(dd, TX_SETTINGS, GENERAL_CONFIG, frame); | |
5222 | } | |
5223 | ||
5224 | static void check_fabric_firmware_versions(struct hfi1_devdata *dd) | |
5225 | { | |
5226 | u32 frame, version, prod_id; | |
5227 | int ret, lane; | |
5228 | ||
5229 | /* 4 lanes */ | |
5230 | for (lane = 0; lane < 4; lane++) { | |
5231 | ret = read_8051_config(dd, SPICO_FW_VERSION, lane, &frame); | |
5232 | if (ret) { | |
5233 | dd_dev_err( | |
5234 | dd, | |
5235 | "Unable to read lane %d firmware details\n", | |
5236 | lane); | |
5237 | continue; | |
5238 | } | |
5239 | version = (frame >> SPICO_ROM_VERSION_SHIFT) | |
5240 | & SPICO_ROM_VERSION_MASK; | |
5241 | prod_id = (frame >> SPICO_ROM_PROD_ID_SHIFT) | |
5242 | & SPICO_ROM_PROD_ID_MASK; | |
5243 | dd_dev_info(dd, | |
5244 | "Lane %d firmware: version 0x%04x, prod_id 0x%04x\n", | |
5245 | lane, version, prod_id); | |
5246 | } | |
5247 | } | |
5248 | ||
5249 | /* | |
5250 | * Read an idle LCB message. | |
5251 | * | |
5252 | * Returns 0 on success, -EINVAL on error | |
5253 | */ | |
5254 | static int read_idle_message(struct hfi1_devdata *dd, u64 type, u64 *data_out) | |
5255 | { | |
5256 | int ret; | |
5257 | ||
5258 | ret = do_8051_command(dd, HCMD_READ_LCB_IDLE_MSG, | |
5259 | type, data_out); | |
5260 | if (ret != HCMD_SUCCESS) { | |
5261 | dd_dev_err(dd, "read idle message: type %d, err %d\n", | |
5262 | (u32)type, ret); | |
5263 | return -EINVAL; | |
5264 | } | |
5265 | dd_dev_info(dd, "%s: read idle message 0x%llx\n", __func__, *data_out); | |
5266 | /* return only the payload as we already know the type */ | |
5267 | *data_out >>= IDLE_PAYLOAD_SHIFT; | |
5268 | return 0; | |
5269 | } | |
5270 | ||
5271 | /* | |
5272 | * Read an idle SMA message. To be done in response to a notification from | |
5273 | * the 8051. | |
5274 | * | |
5275 | * Returns 0 on success, -EINVAL on error | |
5276 | */ | |
5277 | static int read_idle_sma(struct hfi1_devdata *dd, u64 *data) | |
5278 | { | |
5279 | return read_idle_message(dd, | |
5280 | (u64)IDLE_SMA << IDLE_MSG_TYPE_SHIFT, data); | |
5281 | } | |
5282 | ||
5283 | /* | |
5284 | * Send an idle LCB message. | |
5285 | * | |
5286 | * Returns 0 on success, -EINVAL on error | |
5287 | */ | |
5288 | static int send_idle_message(struct hfi1_devdata *dd, u64 data) | |
5289 | { | |
5290 | int ret; | |
5291 | ||
5292 | dd_dev_info(dd, "%s: sending idle message 0x%llx\n", __func__, data); | |
5293 | ret = do_8051_command(dd, HCMD_SEND_LCB_IDLE_MSG, data, NULL); | |
5294 | if (ret != HCMD_SUCCESS) { | |
5295 | dd_dev_err(dd, "send idle message: data 0x%llx, err %d\n", | |
5296 | data, ret); | |
5297 | return -EINVAL; | |
5298 | } | |
5299 | return 0; | |
5300 | } | |
5301 | ||
5302 | /* | |
5303 | * Send an idle SMA message. | |
5304 | * | |
5305 | * Returns 0 on success, -EINVAL on error | |
5306 | */ | |
5307 | int send_idle_sma(struct hfi1_devdata *dd, u64 message) | |
5308 | { | |
5309 | u64 data; | |
5310 | ||
5311 | data = ((message & IDLE_PAYLOAD_MASK) << IDLE_PAYLOAD_SHIFT) | |
5312 | | ((u64)IDLE_SMA << IDLE_MSG_TYPE_SHIFT); | |
5313 | return send_idle_message(dd, data); | |
5314 | } | |
5315 | ||
5316 | /* | |
5317 | * Initialize the LCB then do a quick link up. This may or may not be | |
5318 | * in loopback. | |
5319 | * | |
5320 | * return 0 on success, -errno on error | |
5321 | */ | |
5322 | static int do_quick_linkup(struct hfi1_devdata *dd) | |
5323 | { | |
5324 | u64 reg; | |
5325 | unsigned long timeout; | |
5326 | int ret; | |
5327 | ||
5328 | lcb_shutdown(dd, 0); | |
5329 | ||
5330 | if (loopback) { | |
5331 | /* LCB_CFG_LOOPBACK.VAL = 2 */ | |
5332 | /* LCB_CFG_LANE_WIDTH.VAL = 0 */ | |
5333 | write_csr(dd, DC_LCB_CFG_LOOPBACK, | |
5334 | IB_PACKET_TYPE << DC_LCB_CFG_LOOPBACK_VAL_SHIFT); | |
5335 | write_csr(dd, DC_LCB_CFG_LANE_WIDTH, 0); | |
5336 | } | |
5337 | ||
5338 | /* start the LCBs */ | |
5339 | /* LCB_CFG_TX_FIFOS_RESET.VAL = 0 */ | |
5340 | write_csr(dd, DC_LCB_CFG_TX_FIFOS_RESET, 0); | |
5341 | ||
5342 | /* simulator only loopback steps */ | |
5343 | if (loopback && dd->icode == ICODE_FUNCTIONAL_SIMULATOR) { | |
5344 | /* LCB_CFG_RUN.EN = 1 */ | |
5345 | write_csr(dd, DC_LCB_CFG_RUN, | |
5346 | 1ull << DC_LCB_CFG_RUN_EN_SHIFT); | |
5347 | ||
5348 | /* watch LCB_STS_LINK_TRANSFER_ACTIVE */ | |
5349 | timeout = jiffies + msecs_to_jiffies(10); | |
5350 | while (1) { | |
5351 | reg = read_csr(dd, | |
5352 | DC_LCB_STS_LINK_TRANSFER_ACTIVE); | |
5353 | if (reg) | |
5354 | break; | |
5355 | if (time_after(jiffies, timeout)) { | |
5356 | dd_dev_err(dd, | |
5357 | "timeout waiting for LINK_TRANSFER_ACTIVE\n"); | |
5358 | return -ETIMEDOUT; | |
5359 | } | |
5360 | udelay(2); | |
5361 | } | |
5362 | ||
5363 | write_csr(dd, DC_LCB_CFG_ALLOW_LINK_UP, | |
5364 | 1ull << DC_LCB_CFG_ALLOW_LINK_UP_VAL_SHIFT); | |
5365 | } | |
5366 | ||
5367 | if (!loopback) { | |
5368 | /* | |
5369 | * When doing quick linkup and not in loopback, both | |
5370 | * sides must be done with LCB set-up before either | |
5371 | * starts the quick linkup. Put a delay here so that | |
5372 | * both sides can be started and have a chance to be | |
5373 | * done with LCB set up before resuming. | |
5374 | */ | |
5375 | dd_dev_err(dd, | |
5376 | "Pausing for peer to be finished with LCB set up\n"); | |
5377 | msleep(5000); | |
5378 | dd_dev_err(dd, | |
5379 | "Continuing with quick linkup\n"); | |
5380 | } | |
5381 | ||
5382 | write_csr(dd, DC_LCB_ERR_EN, 0); /* mask LCB errors */ | |
5383 | set_8051_lcb_access(dd); | |
5384 | ||
5385 | /* | |
5386 | * State "quick" LinkUp request sets the physical link state to | |
5387 | * LinkUp without a verify capability sequence. | |
5388 | * This state is in simulator v37 and later. | |
5389 | */ | |
5390 | ret = set_physical_link_state(dd, PLS_QUICK_LINKUP); | |
5391 | if (ret != HCMD_SUCCESS) { | |
5392 | dd_dev_err(dd, | |
5393 | "%s: set physical link state to quick LinkUp failed with return %d\n", | |
5394 | __func__, ret); | |
5395 | ||
5396 | set_host_lcb_access(dd); | |
5397 | write_csr(dd, DC_LCB_ERR_EN, ~0ull); /* watch LCB errors */ | |
5398 | ||
5399 | if (ret >= 0) | |
5400 | ret = -EINVAL; | |
5401 | return ret; | |
5402 | } | |
5403 | ||
5404 | return 0; /* success */ | |
5405 | } | |
5406 | ||
5407 | /* | |
5408 | * Set the SerDes to internal loopback mode. | |
5409 | * Returns 0 on success, -errno on error. | |
5410 | */ | |
5411 | static int set_serdes_loopback_mode(struct hfi1_devdata *dd) | |
5412 | { | |
5413 | int ret; | |
5414 | ||
5415 | ret = set_physical_link_state(dd, PLS_INTERNAL_SERDES_LOOPBACK); | |
5416 | if (ret == HCMD_SUCCESS) | |
5417 | return 0; | |
5418 | dd_dev_err(dd, | |
5419 | "Set physical link state to SerDes Loopback failed with return %d\n", | |
5420 | ret); | |
5421 | if (ret >= 0) | |
5422 | ret = -EINVAL; | |
5423 | return ret; | |
5424 | } | |
5425 | ||
5426 | /* | |
5427 | * Do all special steps to set up loopback. | |
5428 | */ | |
5429 | static int init_loopback(struct hfi1_devdata *dd) | |
5430 | { | |
5431 | dd_dev_info(dd, "Entering loopback mode\n"); | |
5432 | ||
5433 | /* all loopbacks should disable self GUID check */ | |
5434 | write_csr(dd, DC_DC8051_CFG_MODE, | |
5435 | (read_csr(dd, DC_DC8051_CFG_MODE) | DISABLE_SELF_GUID_CHECK)); | |
5436 | ||
5437 | /* | |
5438 | * The simulator has only one loopback option - LCB. Switch | |
5439 | * to that option, which includes quick link up. | |
5440 | * | |
5441 | * Accept all valid loopback values. | |
5442 | */ | |
5443 | if ((dd->icode == ICODE_FUNCTIONAL_SIMULATOR) | |
5444 | && (loopback == LOOPBACK_SERDES | |
5445 | || loopback == LOOPBACK_LCB | |
5446 | || loopback == LOOPBACK_CABLE)) { | |
5447 | loopback = LOOPBACK_LCB; | |
5448 | quick_linkup = 1; | |
5449 | return 0; | |
5450 | } | |
5451 | ||
5452 | /* handle serdes loopback */ | |
5453 | if (loopback == LOOPBACK_SERDES) { | |
5454 | /* internal serdes loopack needs quick linkup on RTL */ | |
5455 | if (dd->icode == ICODE_RTL_SILICON) | |
5456 | quick_linkup = 1; | |
5457 | return set_serdes_loopback_mode(dd); | |
5458 | } | |
5459 | ||
5460 | /* LCB loopback - handled at poll time */ | |
5461 | if (loopback == LOOPBACK_LCB) { | |
5462 | quick_linkup = 1; /* LCB is always quick linkup */ | |
5463 | ||
5464 | /* not supported in emulation due to emulation RTL changes */ | |
5465 | if (dd->icode == ICODE_FPGA_EMULATION) { | |
5466 | dd_dev_err(dd, | |
5467 | "LCB loopback not supported in emulation\n"); | |
5468 | return -EINVAL; | |
5469 | } | |
5470 | return 0; | |
5471 | } | |
5472 | ||
5473 | /* external cable loopback requires no extra steps */ | |
5474 | if (loopback == LOOPBACK_CABLE) | |
5475 | return 0; | |
5476 | ||
5477 | dd_dev_err(dd, "Invalid loopback mode %d\n", loopback); | |
5478 | return -EINVAL; | |
5479 | } | |
5480 | ||
5481 | /* | |
5482 | * Translate from the OPA_LINK_WIDTH handed to us by the FM to bits | |
5483 | * used in the Verify Capability link width attribute. | |
5484 | */ | |
5485 | static u16 opa_to_vc_link_widths(u16 opa_widths) | |
5486 | { | |
5487 | int i; | |
5488 | u16 result = 0; | |
5489 | ||
5490 | static const struct link_bits { | |
5491 | u16 from; | |
5492 | u16 to; | |
5493 | } opa_link_xlate[] = { | |
5494 | { OPA_LINK_WIDTH_1X, 1 << (1-1) }, | |
5495 | { OPA_LINK_WIDTH_2X, 1 << (2-1) }, | |
5496 | { OPA_LINK_WIDTH_3X, 1 << (3-1) }, | |
5497 | { OPA_LINK_WIDTH_4X, 1 << (4-1) }, | |
5498 | }; | |
5499 | ||
5500 | for (i = 0; i < ARRAY_SIZE(opa_link_xlate); i++) { | |
5501 | if (opa_widths & opa_link_xlate[i].from) | |
5502 | result |= opa_link_xlate[i].to; | |
5503 | } | |
5504 | return result; | |
5505 | } | |
5506 | ||
5507 | /* | |
5508 | * Set link attributes before moving to polling. | |
5509 | */ | |
5510 | static int set_local_link_attributes(struct hfi1_pportdata *ppd) | |
5511 | { | |
5512 | struct hfi1_devdata *dd = ppd->dd; | |
5513 | u8 enable_lane_tx; | |
5514 | u8 tx_polarity_inversion; | |
5515 | u8 rx_polarity_inversion; | |
5516 | int ret; | |
5517 | ||
5518 | /* reset our fabric serdes to clear any lingering problems */ | |
5519 | fabric_serdes_reset(dd); | |
5520 | ||
5521 | /* set the local tx rate - need to read-modify-write */ | |
5522 | ret = read_tx_settings(dd, &enable_lane_tx, &tx_polarity_inversion, | |
5523 | &rx_polarity_inversion, &ppd->local_tx_rate); | |
5524 | if (ret) | |
5525 | goto set_local_link_attributes_fail; | |
5526 | ||
5527 | if (dd->dc8051_ver < dc8051_ver(0, 20)) { | |
5528 | /* set the tx rate to the fastest enabled */ | |
5529 | if (ppd->link_speed_enabled & OPA_LINK_SPEED_25G) | |
5530 | ppd->local_tx_rate = 1; | |
5531 | else | |
5532 | ppd->local_tx_rate = 0; | |
5533 | } else { | |
5534 | /* set the tx rate to all enabled */ | |
5535 | ppd->local_tx_rate = 0; | |
5536 | if (ppd->link_speed_enabled & OPA_LINK_SPEED_25G) | |
5537 | ppd->local_tx_rate |= 2; | |
5538 | if (ppd->link_speed_enabled & OPA_LINK_SPEED_12_5G) | |
5539 | ppd->local_tx_rate |= 1; | |
5540 | } | |
febffe2c EH |
5541 | |
5542 | enable_lane_tx = 0xF; /* enable all four lanes */ | |
77241056 MM |
5543 | ret = write_tx_settings(dd, enable_lane_tx, tx_polarity_inversion, |
5544 | rx_polarity_inversion, ppd->local_tx_rate); | |
5545 | if (ret != HCMD_SUCCESS) | |
5546 | goto set_local_link_attributes_fail; | |
5547 | ||
5548 | /* | |
5549 | * DC supports continuous updates. | |
5550 | */ | |
5551 | ret = write_vc_local_phy(dd, 0 /* no power management */, | |
5552 | 1 /* continuous updates */); | |
5553 | if (ret != HCMD_SUCCESS) | |
5554 | goto set_local_link_attributes_fail; | |
5555 | ||
5556 | /* z=1 in the next call: AU of 0 is not supported by the hardware */ | |
5557 | ret = write_vc_local_fabric(dd, dd->vau, 1, dd->vcu, dd->vl15_init, | |
5558 | ppd->port_crc_mode_enabled); | |
5559 | if (ret != HCMD_SUCCESS) | |
5560 | goto set_local_link_attributes_fail; | |
5561 | ||
5562 | ret = write_vc_local_link_width(dd, 0, 0, | |
5563 | opa_to_vc_link_widths(ppd->link_width_enabled)); | |
5564 | if (ret != HCMD_SUCCESS) | |
5565 | goto set_local_link_attributes_fail; | |
5566 | ||
5567 | /* let peer know who we are */ | |
5568 | ret = write_local_device_id(dd, dd->pcidev->device, dd->minrev); | |
5569 | if (ret == HCMD_SUCCESS) | |
5570 | return 0; | |
5571 | ||
5572 | set_local_link_attributes_fail: | |
5573 | dd_dev_err(dd, | |
5574 | "Failed to set local link attributes, return 0x%x\n", | |
5575 | ret); | |
5576 | return ret; | |
5577 | } | |
5578 | ||
5579 | /* | |
5580 | * Call this to start the link. Schedule a retry if the cable is not | |
5581 | * present or if unable to start polling. Do not do anything if the | |
5582 | * link is disabled. Returns 0 if link is disabled or moved to polling | |
5583 | */ | |
5584 | int start_link(struct hfi1_pportdata *ppd) | |
5585 | { | |
5586 | if (!ppd->link_enabled) { | |
5587 | dd_dev_info(ppd->dd, | |
5588 | "%s: stopping link start because link is disabled\n", | |
5589 | __func__); | |
5590 | return 0; | |
5591 | } | |
5592 | if (!ppd->driver_link_ready) { | |
5593 | dd_dev_info(ppd->dd, | |
5594 | "%s: stopping link start because driver is not ready\n", | |
5595 | __func__); | |
5596 | return 0; | |
5597 | } | |
5598 | ||
5599 | if (qsfp_mod_present(ppd) || loopback == LOOPBACK_SERDES || | |
5600 | loopback == LOOPBACK_LCB || | |
5601 | ppd->dd->icode == ICODE_FUNCTIONAL_SIMULATOR) | |
5602 | return set_link_state(ppd, HLS_DN_POLL); | |
5603 | ||
5604 | dd_dev_info(ppd->dd, | |
5605 | "%s: stopping link start because no cable is present\n", | |
5606 | __func__); | |
5607 | return -EAGAIN; | |
5608 | } | |
5609 | ||
5610 | static void reset_qsfp(struct hfi1_pportdata *ppd) | |
5611 | { | |
5612 | struct hfi1_devdata *dd = ppd->dd; | |
5613 | u64 mask, qsfp_mask; | |
5614 | ||
5615 | mask = (u64)QSFP_HFI0_RESET_N; | |
5616 | qsfp_mask = read_csr(dd, | |
5617 | dd->hfi1_id ? ASIC_QSFP2_OE : ASIC_QSFP1_OE); | |
5618 | qsfp_mask |= mask; | |
5619 | write_csr(dd, | |
5620 | dd->hfi1_id ? ASIC_QSFP2_OE : ASIC_QSFP1_OE, | |
5621 | qsfp_mask); | |
5622 | ||
5623 | qsfp_mask = read_csr(dd, | |
5624 | dd->hfi1_id ? ASIC_QSFP2_OUT : ASIC_QSFP1_OUT); | |
5625 | qsfp_mask &= ~mask; | |
5626 | write_csr(dd, | |
5627 | dd->hfi1_id ? ASIC_QSFP2_OUT : ASIC_QSFP1_OUT, | |
5628 | qsfp_mask); | |
5629 | ||
5630 | udelay(10); | |
5631 | ||
5632 | qsfp_mask |= mask; | |
5633 | write_csr(dd, | |
5634 | dd->hfi1_id ? ASIC_QSFP2_OUT : ASIC_QSFP1_OUT, | |
5635 | qsfp_mask); | |
5636 | } | |
5637 | ||
5638 | static int handle_qsfp_error_conditions(struct hfi1_pportdata *ppd, | |
5639 | u8 *qsfp_interrupt_status) | |
5640 | { | |
5641 | struct hfi1_devdata *dd = ppd->dd; | |
5642 | ||
5643 | if ((qsfp_interrupt_status[0] & QSFP_HIGH_TEMP_ALARM) || | |
5644 | (qsfp_interrupt_status[0] & QSFP_HIGH_TEMP_WARNING)) | |
5645 | dd_dev_info(dd, | |
5646 | "%s: QSFP cable on fire\n", | |
5647 | __func__); | |
5648 | ||
5649 | if ((qsfp_interrupt_status[0] & QSFP_LOW_TEMP_ALARM) || | |
5650 | (qsfp_interrupt_status[0] & QSFP_LOW_TEMP_WARNING)) | |
5651 | dd_dev_info(dd, | |
5652 | "%s: QSFP cable temperature too low\n", | |
5653 | __func__); | |
5654 | ||
5655 | if ((qsfp_interrupt_status[1] & QSFP_HIGH_VCC_ALARM) || | |
5656 | (qsfp_interrupt_status[1] & QSFP_HIGH_VCC_WARNING)) | |
5657 | dd_dev_info(dd, | |
5658 | "%s: QSFP supply voltage too high\n", | |
5659 | __func__); | |
5660 | ||
5661 | if ((qsfp_interrupt_status[1] & QSFP_LOW_VCC_ALARM) || | |
5662 | (qsfp_interrupt_status[1] & QSFP_LOW_VCC_WARNING)) | |
5663 | dd_dev_info(dd, | |
5664 | "%s: QSFP supply voltage too low\n", | |
5665 | __func__); | |
5666 | ||
5667 | /* Byte 2 is vendor specific */ | |
5668 | ||
5669 | if ((qsfp_interrupt_status[3] & QSFP_HIGH_POWER_ALARM) || | |
5670 | (qsfp_interrupt_status[3] & QSFP_HIGH_POWER_WARNING)) | |
5671 | dd_dev_info(dd, | |
5672 | "%s: Cable RX channel 1/2 power too high\n", | |
5673 | __func__); | |
5674 | ||
5675 | if ((qsfp_interrupt_status[3] & QSFP_LOW_POWER_ALARM) || | |
5676 | (qsfp_interrupt_status[3] & QSFP_LOW_POWER_WARNING)) | |
5677 | dd_dev_info(dd, | |
5678 | "%s: Cable RX channel 1/2 power too low\n", | |
5679 | __func__); | |
5680 | ||
5681 | if ((qsfp_interrupt_status[4] & QSFP_HIGH_POWER_ALARM) || | |
5682 | (qsfp_interrupt_status[4] & QSFP_HIGH_POWER_WARNING)) | |
5683 | dd_dev_info(dd, | |
5684 | "%s: Cable RX channel 3/4 power too high\n", | |
5685 | __func__); | |
5686 | ||
5687 | if ((qsfp_interrupt_status[4] & QSFP_LOW_POWER_ALARM) || | |
5688 | (qsfp_interrupt_status[4] & QSFP_LOW_POWER_WARNING)) | |
5689 | dd_dev_info(dd, | |
5690 | "%s: Cable RX channel 3/4 power too low\n", | |
5691 | __func__); | |
5692 | ||
5693 | if ((qsfp_interrupt_status[5] & QSFP_HIGH_BIAS_ALARM) || | |
5694 | (qsfp_interrupt_status[5] & QSFP_HIGH_BIAS_WARNING)) | |
5695 | dd_dev_info(dd, | |
5696 | "%s: Cable TX channel 1/2 bias too high\n", | |
5697 | __func__); | |
5698 | ||
5699 | if ((qsfp_interrupt_status[5] & QSFP_LOW_BIAS_ALARM) || | |
5700 | (qsfp_interrupt_status[5] & QSFP_LOW_BIAS_WARNING)) | |
5701 | dd_dev_info(dd, | |
5702 | "%s: Cable TX channel 1/2 bias too low\n", | |
5703 | __func__); | |
5704 | ||
5705 | if ((qsfp_interrupt_status[6] & QSFP_HIGH_BIAS_ALARM) || | |
5706 | (qsfp_interrupt_status[6] & QSFP_HIGH_BIAS_WARNING)) | |
5707 | dd_dev_info(dd, | |
5708 | "%s: Cable TX channel 3/4 bias too high\n", | |
5709 | __func__); | |
5710 | ||
5711 | if ((qsfp_interrupt_status[6] & QSFP_LOW_BIAS_ALARM) || | |
5712 | (qsfp_interrupt_status[6] & QSFP_LOW_BIAS_WARNING)) | |
5713 | dd_dev_info(dd, | |
5714 | "%s: Cable TX channel 3/4 bias too low\n", | |
5715 | __func__); | |
5716 | ||
5717 | if ((qsfp_interrupt_status[7] & QSFP_HIGH_POWER_ALARM) || | |
5718 | (qsfp_interrupt_status[7] & QSFP_HIGH_POWER_WARNING)) | |
5719 | dd_dev_info(dd, | |
5720 | "%s: Cable TX channel 1/2 power too high\n", | |
5721 | __func__); | |
5722 | ||
5723 | if ((qsfp_interrupt_status[7] & QSFP_LOW_POWER_ALARM) || | |
5724 | (qsfp_interrupt_status[7] & QSFP_LOW_POWER_WARNING)) | |
5725 | dd_dev_info(dd, | |
5726 | "%s: Cable TX channel 1/2 power too low\n", | |
5727 | __func__); | |
5728 | ||
5729 | if ((qsfp_interrupt_status[8] & QSFP_HIGH_POWER_ALARM) || | |
5730 | (qsfp_interrupt_status[8] & QSFP_HIGH_POWER_WARNING)) | |
5731 | dd_dev_info(dd, | |
5732 | "%s: Cable TX channel 3/4 power too high\n", | |
5733 | __func__); | |
5734 | ||
5735 | if ((qsfp_interrupt_status[8] & QSFP_LOW_POWER_ALARM) || | |
5736 | (qsfp_interrupt_status[8] & QSFP_LOW_POWER_WARNING)) | |
5737 | dd_dev_info(dd, | |
5738 | "%s: Cable TX channel 3/4 power too low\n", | |
5739 | __func__); | |
5740 | ||
5741 | /* Bytes 9-10 and 11-12 are reserved */ | |
5742 | /* Bytes 13-15 are vendor specific */ | |
5743 | ||
5744 | return 0; | |
5745 | } | |
5746 | ||
5747 | static int do_pre_lni_host_behaviors(struct hfi1_pportdata *ppd) | |
5748 | { | |
5749 | refresh_qsfp_cache(ppd, &ppd->qsfp_info); | |
5750 | ||
5751 | return 0; | |
5752 | } | |
5753 | ||
5754 | static int do_qsfp_intr_fallback(struct hfi1_pportdata *ppd) | |
5755 | { | |
5756 | struct hfi1_devdata *dd = ppd->dd; | |
5757 | u8 qsfp_interrupt_status = 0; | |
5758 | ||
5759 | if (qsfp_read(ppd, dd->hfi1_id, 2, &qsfp_interrupt_status, 1) | |
5760 | != 1) { | |
5761 | dd_dev_info(dd, | |
5762 | "%s: Failed to read status of QSFP module\n", | |
5763 | __func__); | |
5764 | return -EIO; | |
5765 | } | |
5766 | ||
5767 | /* We don't care about alarms & warnings with a non-functional INT_N */ | |
5768 | if (!(qsfp_interrupt_status & QSFP_DATA_NOT_READY)) | |
5769 | do_pre_lni_host_behaviors(ppd); | |
5770 | ||
5771 | return 0; | |
5772 | } | |
5773 | ||
5774 | /* This routine will only be scheduled if the QSFP module is present */ | |
5775 | static void qsfp_event(struct work_struct *work) | |
5776 | { | |
5777 | struct qsfp_data *qd; | |
5778 | struct hfi1_pportdata *ppd; | |
5779 | struct hfi1_devdata *dd; | |
5780 | ||
5781 | qd = container_of(work, struct qsfp_data, qsfp_work); | |
5782 | ppd = qd->ppd; | |
5783 | dd = ppd->dd; | |
5784 | ||
5785 | /* Sanity check */ | |
5786 | if (!qsfp_mod_present(ppd)) | |
5787 | return; | |
5788 | ||
5789 | /* | |
5790 | * Turn DC back on after cables has been | |
5791 | * re-inserted. Up until now, the DC has been in | |
5792 | * reset to save power. | |
5793 | */ | |
5794 | dc_start(dd); | |
5795 | ||
5796 | if (qd->cache_refresh_required) { | |
5797 | msleep(3000); | |
5798 | reset_qsfp(ppd); | |
5799 | ||
5800 | /* Check for QSFP interrupt after t_init (SFF 8679) | |
5801 | * + extra | |
5802 | */ | |
5803 | msleep(3000); | |
5804 | if (!qd->qsfp_interrupt_functional) { | |
5805 | if (do_qsfp_intr_fallback(ppd) < 0) | |
5806 | dd_dev_info(dd, "%s: QSFP fallback failed\n", | |
5807 | __func__); | |
5808 | ppd->driver_link_ready = 1; | |
5809 | start_link(ppd); | |
5810 | } | |
5811 | } | |
5812 | ||
5813 | if (qd->check_interrupt_flags) { | |
5814 | u8 qsfp_interrupt_status[16] = {0,}; | |
5815 | ||
5816 | if (qsfp_read(ppd, dd->hfi1_id, 6, | |
5817 | &qsfp_interrupt_status[0], 16) != 16) { | |
5818 | dd_dev_info(dd, | |
5819 | "%s: Failed to read status of QSFP module\n", | |
5820 | __func__); | |
5821 | } else { | |
5822 | unsigned long flags; | |
5823 | u8 data_status; | |
5824 | ||
5825 | spin_lock_irqsave(&ppd->qsfp_info.qsfp_lock, flags); | |
5826 | ppd->qsfp_info.check_interrupt_flags = 0; | |
5827 | spin_unlock_irqrestore(&ppd->qsfp_info.qsfp_lock, | |
5828 | flags); | |
5829 | ||
5830 | if (qsfp_read(ppd, dd->hfi1_id, 2, &data_status, 1) | |
5831 | != 1) { | |
5832 | dd_dev_info(dd, | |
5833 | "%s: Failed to read status of QSFP module\n", | |
5834 | __func__); | |
5835 | } | |
5836 | if (!(data_status & QSFP_DATA_NOT_READY)) { | |
5837 | do_pre_lni_host_behaviors(ppd); | |
5838 | start_link(ppd); | |
5839 | } else | |
5840 | handle_qsfp_error_conditions(ppd, | |
5841 | qsfp_interrupt_status); | |
5842 | } | |
5843 | } | |
5844 | } | |
5845 | ||
5846 | void init_qsfp(struct hfi1_pportdata *ppd) | |
5847 | { | |
5848 | struct hfi1_devdata *dd = ppd->dd; | |
5849 | u64 qsfp_mask; | |
5850 | ||
5851 | if (loopback == LOOPBACK_SERDES || loopback == LOOPBACK_LCB || | |
3c2f85b8 | 5852 | ppd->dd->icode == ICODE_FUNCTIONAL_SIMULATOR) { |
77241056 MM |
5853 | ppd->driver_link_ready = 1; |
5854 | return; | |
5855 | } | |
5856 | ||
5857 | ppd->qsfp_info.ppd = ppd; | |
5858 | INIT_WORK(&ppd->qsfp_info.qsfp_work, qsfp_event); | |
5859 | ||
5860 | qsfp_mask = (u64)(QSFP_HFI0_INT_N | QSFP_HFI0_MODPRST_N); | |
5861 | /* Clear current status to avoid spurious interrupts */ | |
5862 | write_csr(dd, | |
5863 | dd->hfi1_id ? | |
5864 | ASIC_QSFP2_CLEAR : | |
5865 | ASIC_QSFP1_CLEAR, | |
5866 | qsfp_mask); | |
5867 | ||
5868 | /* Handle active low nature of INT_N and MODPRST_N pins */ | |
5869 | if (qsfp_mod_present(ppd)) | |
5870 | qsfp_mask &= ~(u64)QSFP_HFI0_MODPRST_N; | |
5871 | write_csr(dd, | |
5872 | dd->hfi1_id ? ASIC_QSFP2_INVERT : ASIC_QSFP1_INVERT, | |
5873 | qsfp_mask); | |
5874 | ||
5875 | /* Allow only INT_N and MODPRST_N to trigger QSFP interrupts */ | |
5876 | qsfp_mask |= (u64)QSFP_HFI0_MODPRST_N; | |
5877 | write_csr(dd, | |
5878 | dd->hfi1_id ? ASIC_QSFP2_MASK : ASIC_QSFP1_MASK, | |
5879 | qsfp_mask); | |
5880 | ||
5881 | if (qsfp_mod_present(ppd)) { | |
5882 | msleep(3000); | |
5883 | reset_qsfp(ppd); | |
5884 | ||
5885 | /* Check for QSFP interrupt after t_init (SFF 8679) | |
5886 | * + extra | |
5887 | */ | |
5888 | msleep(3000); | |
5889 | if (!ppd->qsfp_info.qsfp_interrupt_functional) { | |
5890 | if (do_qsfp_intr_fallback(ppd) < 0) | |
5891 | dd_dev_info(dd, | |
5892 | "%s: QSFP fallback failed\n", | |
5893 | __func__); | |
5894 | ppd->driver_link_ready = 1; | |
5895 | } | |
5896 | } | |
5897 | } | |
5898 | ||
5899 | int bringup_serdes(struct hfi1_pportdata *ppd) | |
5900 | { | |
5901 | struct hfi1_devdata *dd = ppd->dd; | |
5902 | u64 guid; | |
5903 | int ret; | |
5904 | ||
5905 | if (HFI1_CAP_IS_KSET(EXTENDED_PSN)) | |
5906 | add_rcvctrl(dd, RCV_CTRL_RCV_EXTENDED_PSN_ENABLE_SMASK); | |
5907 | ||
5908 | guid = ppd->guid; | |
5909 | if (!guid) { | |
5910 | if (dd->base_guid) | |
5911 | guid = dd->base_guid + ppd->port - 1; | |
5912 | ppd->guid = guid; | |
5913 | } | |
5914 | ||
5915 | /* the link defaults to enabled */ | |
5916 | ppd->link_enabled = 1; | |
5917 | /* Set linkinit_reason on power up per OPA spec */ | |
5918 | ppd->linkinit_reason = OPA_LINKINIT_REASON_LINKUP; | |
5919 | ||
5920 | if (loopback) { | |
5921 | ret = init_loopback(dd); | |
5922 | if (ret < 0) | |
5923 | return ret; | |
5924 | } | |
5925 | ||
5926 | return start_link(ppd); | |
5927 | } | |
5928 | ||
5929 | void hfi1_quiet_serdes(struct hfi1_pportdata *ppd) | |
5930 | { | |
5931 | struct hfi1_devdata *dd = ppd->dd; | |
5932 | ||
5933 | /* | |
5934 | * Shut down the link and keep it down. First turn off that the | |
5935 | * driver wants to allow the link to be up (driver_link_ready). | |
5936 | * Then make sure the link is not automatically restarted | |
5937 | * (link_enabled). Cancel any pending restart. And finally | |
5938 | * go offline. | |
5939 | */ | |
5940 | ppd->driver_link_ready = 0; | |
5941 | ppd->link_enabled = 0; | |
5942 | ||
5943 | set_link_down_reason(ppd, OPA_LINKDOWN_REASON_SMA_DISABLED, 0, | |
5944 | OPA_LINKDOWN_REASON_SMA_DISABLED); | |
5945 | set_link_state(ppd, HLS_DN_OFFLINE); | |
5946 | ||
5947 | /* disable the port */ | |
5948 | clear_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK); | |
5949 | } | |
5950 | ||
5951 | static inline int init_cpu_counters(struct hfi1_devdata *dd) | |
5952 | { | |
5953 | struct hfi1_pportdata *ppd; | |
5954 | int i; | |
5955 | ||
5956 | ppd = (struct hfi1_pportdata *)(dd + 1); | |
5957 | for (i = 0; i < dd->num_pports; i++, ppd++) { | |
5958 | ppd->ibport_data.rc_acks = NULL; | |
5959 | ppd->ibport_data.rc_qacks = NULL; | |
5960 | ppd->ibport_data.rc_acks = alloc_percpu(u64); | |
5961 | ppd->ibport_data.rc_qacks = alloc_percpu(u64); | |
5962 | ppd->ibport_data.rc_delayed_comp = alloc_percpu(u64); | |
5963 | if ((ppd->ibport_data.rc_acks == NULL) || | |
5964 | (ppd->ibport_data.rc_delayed_comp == NULL) || | |
5965 | (ppd->ibport_data.rc_qacks == NULL)) | |
5966 | return -ENOMEM; | |
5967 | } | |
5968 | ||
5969 | return 0; | |
5970 | } | |
5971 | ||
5972 | static const char * const pt_names[] = { | |
5973 | "expected", | |
5974 | "eager", | |
5975 | "invalid" | |
5976 | }; | |
5977 | ||
5978 | static const char *pt_name(u32 type) | |
5979 | { | |
5980 | return type >= ARRAY_SIZE(pt_names) ? "unknown" : pt_names[type]; | |
5981 | } | |
5982 | ||
5983 | /* | |
5984 | * index is the index into the receive array | |
5985 | */ | |
5986 | void hfi1_put_tid(struct hfi1_devdata *dd, u32 index, | |
5987 | u32 type, unsigned long pa, u16 order) | |
5988 | { | |
5989 | u64 reg; | |
5990 | void __iomem *base = (dd->rcvarray_wc ? dd->rcvarray_wc : | |
5991 | (dd->kregbase + RCV_ARRAY)); | |
5992 | ||
5993 | if (!(dd->flags & HFI1_PRESENT)) | |
5994 | goto done; | |
5995 | ||
5996 | if (type == PT_INVALID) { | |
5997 | pa = 0; | |
5998 | } else if (type > PT_INVALID) { | |
5999 | dd_dev_err(dd, | |
6000 | "unexpected receive array type %u for index %u, not handled\n", | |
6001 | type, index); | |
6002 | goto done; | |
6003 | } | |
6004 | ||
6005 | hfi1_cdbg(TID, "type %s, index 0x%x, pa 0x%lx, bsize 0x%lx", | |
6006 | pt_name(type), index, pa, (unsigned long)order); | |
6007 | ||
6008 | #define RT_ADDR_SHIFT 12 /* 4KB kernel address boundary */ | |
6009 | reg = RCV_ARRAY_RT_WRITE_ENABLE_SMASK | |
6010 | | (u64)order << RCV_ARRAY_RT_BUF_SIZE_SHIFT | |
6011 | | ((pa >> RT_ADDR_SHIFT) & RCV_ARRAY_RT_ADDR_MASK) | |
6012 | << RCV_ARRAY_RT_ADDR_SHIFT; | |
6013 | writeq(reg, base + (index * 8)); | |
6014 | ||
6015 | if (type == PT_EAGER) | |
6016 | /* | |
6017 | * Eager entries are written one-by-one so we have to push them | |
6018 | * after we write the entry. | |
6019 | */ | |
6020 | flush_wc(); | |
6021 | done: | |
6022 | return; | |
6023 | } | |
6024 | ||
6025 | void hfi1_clear_tids(struct hfi1_ctxtdata *rcd) | |
6026 | { | |
6027 | struct hfi1_devdata *dd = rcd->dd; | |
6028 | u32 i; | |
6029 | ||
6030 | /* this could be optimized */ | |
6031 | for (i = rcd->eager_base; i < rcd->eager_base + | |
6032 | rcd->egrbufs.alloced; i++) | |
6033 | hfi1_put_tid(dd, i, PT_INVALID, 0, 0); | |
6034 | ||
6035 | for (i = rcd->expected_base; | |
6036 | i < rcd->expected_base + rcd->expected_count; i++) | |
6037 | hfi1_put_tid(dd, i, PT_INVALID, 0, 0); | |
6038 | } | |
6039 | ||
6040 | int hfi1_get_base_kinfo(struct hfi1_ctxtdata *rcd, | |
6041 | struct hfi1_ctxt_info *kinfo) | |
6042 | { | |
6043 | kinfo->runtime_flags = (HFI1_MISC_GET() << HFI1_CAP_USER_SHIFT) | | |
6044 | HFI1_CAP_UGET(MASK) | HFI1_CAP_KGET(K2U); | |
6045 | return 0; | |
6046 | } | |
6047 | ||
6048 | struct hfi1_message_header *hfi1_get_msgheader( | |
6049 | struct hfi1_devdata *dd, __le32 *rhf_addr) | |
6050 | { | |
6051 | u32 offset = rhf_hdrq_offset(rhf_to_cpu(rhf_addr)); | |
6052 | ||
6053 | return (struct hfi1_message_header *) | |
6054 | (rhf_addr - dd->rhf_offset + offset); | |
6055 | } | |
6056 | ||
6057 | static const char * const ib_cfg_name_strings[] = { | |
6058 | "HFI1_IB_CFG_LIDLMC", | |
6059 | "HFI1_IB_CFG_LWID_DG_ENB", | |
6060 | "HFI1_IB_CFG_LWID_ENB", | |
6061 | "HFI1_IB_CFG_LWID", | |
6062 | "HFI1_IB_CFG_SPD_ENB", | |
6063 | "HFI1_IB_CFG_SPD", | |
6064 | "HFI1_IB_CFG_RXPOL_ENB", | |
6065 | "HFI1_IB_CFG_LREV_ENB", | |
6066 | "HFI1_IB_CFG_LINKLATENCY", | |
6067 | "HFI1_IB_CFG_HRTBT", | |
6068 | "HFI1_IB_CFG_OP_VLS", | |
6069 | "HFI1_IB_CFG_VL_HIGH_CAP", | |
6070 | "HFI1_IB_CFG_VL_LOW_CAP", | |
6071 | "HFI1_IB_CFG_OVERRUN_THRESH", | |
6072 | "HFI1_IB_CFG_PHYERR_THRESH", | |
6073 | "HFI1_IB_CFG_LINKDEFAULT", | |
6074 | "HFI1_IB_CFG_PKEYS", | |
6075 | "HFI1_IB_CFG_MTU", | |
6076 | "HFI1_IB_CFG_LSTATE", | |
6077 | "HFI1_IB_CFG_VL_HIGH_LIMIT", | |
6078 | "HFI1_IB_CFG_PMA_TICKS", | |
6079 | "HFI1_IB_CFG_PORT" | |
6080 | }; | |
6081 | ||
6082 | static const char *ib_cfg_name(int which) | |
6083 | { | |
6084 | if (which < 0 || which >= ARRAY_SIZE(ib_cfg_name_strings)) | |
6085 | return "invalid"; | |
6086 | return ib_cfg_name_strings[which]; | |
6087 | } | |
6088 | ||
6089 | int hfi1_get_ib_cfg(struct hfi1_pportdata *ppd, int which) | |
6090 | { | |
6091 | struct hfi1_devdata *dd = ppd->dd; | |
6092 | int val = 0; | |
6093 | ||
6094 | switch (which) { | |
6095 | case HFI1_IB_CFG_LWID_ENB: /* allowed Link-width */ | |
6096 | val = ppd->link_width_enabled; | |
6097 | break; | |
6098 | case HFI1_IB_CFG_LWID: /* currently active Link-width */ | |
6099 | val = ppd->link_width_active; | |
6100 | break; | |
6101 | case HFI1_IB_CFG_SPD_ENB: /* allowed Link speeds */ | |
6102 | val = ppd->link_speed_enabled; | |
6103 | break; | |
6104 | case HFI1_IB_CFG_SPD: /* current Link speed */ | |
6105 | val = ppd->link_speed_active; | |
6106 | break; | |
6107 | ||
6108 | case HFI1_IB_CFG_RXPOL_ENB: /* Auto-RX-polarity enable */ | |
6109 | case HFI1_IB_CFG_LREV_ENB: /* Auto-Lane-reversal enable */ | |
6110 | case HFI1_IB_CFG_LINKLATENCY: | |
6111 | goto unimplemented; | |
6112 | ||
6113 | case HFI1_IB_CFG_OP_VLS: | |
6114 | val = ppd->vls_operational; | |
6115 | break; | |
6116 | case HFI1_IB_CFG_VL_HIGH_CAP: /* VL arb high priority table size */ | |
6117 | val = VL_ARB_HIGH_PRIO_TABLE_SIZE; | |
6118 | break; | |
6119 | case HFI1_IB_CFG_VL_LOW_CAP: /* VL arb low priority table size */ | |
6120 | val = VL_ARB_LOW_PRIO_TABLE_SIZE; | |
6121 | break; | |
6122 | case HFI1_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */ | |
6123 | val = ppd->overrun_threshold; | |
6124 | break; | |
6125 | case HFI1_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */ | |
6126 | val = ppd->phy_error_threshold; | |
6127 | break; | |
6128 | case HFI1_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */ | |
6129 | val = dd->link_default; | |
6130 | break; | |
6131 | ||
6132 | case HFI1_IB_CFG_HRTBT: /* Heartbeat off/enable/auto */ | |
6133 | case HFI1_IB_CFG_PMA_TICKS: | |
6134 | default: | |
6135 | unimplemented: | |
6136 | if (HFI1_CAP_IS_KSET(PRINT_UNIMPL)) | |
6137 | dd_dev_info( | |
6138 | dd, | |
6139 | "%s: which %s: not implemented\n", | |
6140 | __func__, | |
6141 | ib_cfg_name(which)); | |
6142 | break; | |
6143 | } | |
6144 | ||
6145 | return val; | |
6146 | } | |
6147 | ||
6148 | /* | |
6149 | * The largest MAD packet size. | |
6150 | */ | |
6151 | #define MAX_MAD_PACKET 2048 | |
6152 | ||
6153 | /* | |
6154 | * Return the maximum header bytes that can go on the _wire_ | |
6155 | * for this device. This count includes the ICRC which is | |
6156 | * not part of the packet held in memory but it is appended | |
6157 | * by the HW. | |
6158 | * This is dependent on the device's receive header entry size. | |
6159 | * HFI allows this to be set per-receive context, but the | |
6160 | * driver presently enforces a global value. | |
6161 | */ | |
6162 | u32 lrh_max_header_bytes(struct hfi1_devdata *dd) | |
6163 | { | |
6164 | /* | |
6165 | * The maximum non-payload (MTU) bytes in LRH.PktLen are | |
6166 | * the Receive Header Entry Size minus the PBC (or RHF) size | |
6167 | * plus one DW for the ICRC appended by HW. | |
6168 | * | |
6169 | * dd->rcd[0].rcvhdrqentsize is in DW. | |
6170 | * We use rcd[0] as all context will have the same value. Also, | |
6171 | * the first kernel context would have been allocated by now so | |
6172 | * we are guaranteed a valid value. | |
6173 | */ | |
6174 | return (dd->rcd[0]->rcvhdrqentsize - 2/*PBC/RHF*/ + 1/*ICRC*/) << 2; | |
6175 | } | |
6176 | ||
6177 | /* | |
6178 | * Set Send Length | |
6179 | * @ppd - per port data | |
6180 | * | |
6181 | * Set the MTU by limiting how many DWs may be sent. The SendLenCheck* | |
6182 | * registers compare against LRH.PktLen, so use the max bytes included | |
6183 | * in the LRH. | |
6184 | * | |
6185 | * This routine changes all VL values except VL15, which it maintains at | |
6186 | * the same value. | |
6187 | */ | |
6188 | static void set_send_length(struct hfi1_pportdata *ppd) | |
6189 | { | |
6190 | struct hfi1_devdata *dd = ppd->dd; | |
6191 | u32 max_hb = lrh_max_header_bytes(dd), maxvlmtu = 0, dcmtu; | |
6192 | u64 len1 = 0, len2 = (((dd->vld[15].mtu + max_hb) >> 2) | |
6193 | & SEND_LEN_CHECK1_LEN_VL15_MASK) << | |
6194 | SEND_LEN_CHECK1_LEN_VL15_SHIFT; | |
6195 | int i; | |
6196 | ||
6197 | for (i = 0; i < ppd->vls_supported; i++) { | |
6198 | if (dd->vld[i].mtu > maxvlmtu) | |
6199 | maxvlmtu = dd->vld[i].mtu; | |
6200 | if (i <= 3) | |
6201 | len1 |= (((dd->vld[i].mtu + max_hb) >> 2) | |
6202 | & SEND_LEN_CHECK0_LEN_VL0_MASK) << | |
6203 | ((i % 4) * SEND_LEN_CHECK0_LEN_VL1_SHIFT); | |
6204 | else | |
6205 | len2 |= (((dd->vld[i].mtu + max_hb) >> 2) | |
6206 | & SEND_LEN_CHECK1_LEN_VL4_MASK) << | |
6207 | ((i % 4) * SEND_LEN_CHECK1_LEN_VL5_SHIFT); | |
6208 | } | |
6209 | write_csr(dd, SEND_LEN_CHECK0, len1); | |
6210 | write_csr(dd, SEND_LEN_CHECK1, len2); | |
6211 | /* adjust kernel credit return thresholds based on new MTUs */ | |
6212 | /* all kernel receive contexts have the same hdrqentsize */ | |
6213 | for (i = 0; i < ppd->vls_supported; i++) { | |
6214 | sc_set_cr_threshold(dd->vld[i].sc, | |
6215 | sc_mtu_to_threshold(dd->vld[i].sc, dd->vld[i].mtu, | |
6216 | dd->rcd[0]->rcvhdrqentsize)); | |
6217 | } | |
6218 | sc_set_cr_threshold(dd->vld[15].sc, | |
6219 | sc_mtu_to_threshold(dd->vld[15].sc, dd->vld[15].mtu, | |
6220 | dd->rcd[0]->rcvhdrqentsize)); | |
6221 | ||
6222 | /* Adjust maximum MTU for the port in DC */ | |
6223 | dcmtu = maxvlmtu == 10240 ? DCC_CFG_PORT_MTU_CAP_10240 : | |
6224 | (ilog2(maxvlmtu >> 8) + 1); | |
6225 | len1 = read_csr(ppd->dd, DCC_CFG_PORT_CONFIG); | |
6226 | len1 &= ~DCC_CFG_PORT_CONFIG_MTU_CAP_SMASK; | |
6227 | len1 |= ((u64)dcmtu & DCC_CFG_PORT_CONFIG_MTU_CAP_MASK) << | |
6228 | DCC_CFG_PORT_CONFIG_MTU_CAP_SHIFT; | |
6229 | write_csr(ppd->dd, DCC_CFG_PORT_CONFIG, len1); | |
6230 | } | |
6231 | ||
6232 | static void set_lidlmc(struct hfi1_pportdata *ppd) | |
6233 | { | |
6234 | int i; | |
6235 | u64 sreg = 0; | |
6236 | struct hfi1_devdata *dd = ppd->dd; | |
6237 | u32 mask = ~((1U << ppd->lmc) - 1); | |
6238 | u64 c1 = read_csr(ppd->dd, DCC_CFG_PORT_CONFIG1); | |
6239 | ||
6240 | if (dd->hfi1_snoop.mode_flag) | |
6241 | dd_dev_info(dd, "Set lid/lmc while snooping"); | |
6242 | ||
6243 | c1 &= ~(DCC_CFG_PORT_CONFIG1_TARGET_DLID_SMASK | |
6244 | | DCC_CFG_PORT_CONFIG1_DLID_MASK_SMASK); | |
6245 | c1 |= ((ppd->lid & DCC_CFG_PORT_CONFIG1_TARGET_DLID_MASK) | |
6246 | << DCC_CFG_PORT_CONFIG1_TARGET_DLID_SHIFT)| | |
6247 | ((mask & DCC_CFG_PORT_CONFIG1_DLID_MASK_MASK) | |
6248 | << DCC_CFG_PORT_CONFIG1_DLID_MASK_SHIFT); | |
6249 | write_csr(ppd->dd, DCC_CFG_PORT_CONFIG1, c1); | |
6250 | ||
6251 | /* | |
6252 | * Iterate over all the send contexts and set their SLID check | |
6253 | */ | |
6254 | sreg = ((mask & SEND_CTXT_CHECK_SLID_MASK_MASK) << | |
6255 | SEND_CTXT_CHECK_SLID_MASK_SHIFT) | | |
6256 | (((ppd->lid & mask) & SEND_CTXT_CHECK_SLID_VALUE_MASK) << | |
6257 | SEND_CTXT_CHECK_SLID_VALUE_SHIFT); | |
6258 | ||
6259 | for (i = 0; i < dd->chip_send_contexts; i++) { | |
6260 | hfi1_cdbg(LINKVERB, "SendContext[%d].SLID_CHECK = 0x%x", | |
6261 | i, (u32)sreg); | |
6262 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_SLID, sreg); | |
6263 | } | |
6264 | ||
6265 | /* Now we have to do the same thing for the sdma engines */ | |
6266 | sdma_update_lmc(dd, mask, ppd->lid); | |
6267 | } | |
6268 | ||
6269 | static int wait_phy_linkstate(struct hfi1_devdata *dd, u32 state, u32 msecs) | |
6270 | { | |
6271 | unsigned long timeout; | |
6272 | u32 curr_state; | |
6273 | ||
6274 | timeout = jiffies + msecs_to_jiffies(msecs); | |
6275 | while (1) { | |
6276 | curr_state = read_physical_state(dd); | |
6277 | if (curr_state == state) | |
6278 | break; | |
6279 | if (time_after(jiffies, timeout)) { | |
6280 | dd_dev_err(dd, | |
6281 | "timeout waiting for phy link state 0x%x, current state is 0x%x\n", | |
6282 | state, curr_state); | |
6283 | return -ETIMEDOUT; | |
6284 | } | |
6285 | usleep_range(1950, 2050); /* sleep 2ms-ish */ | |
6286 | } | |
6287 | ||
6288 | return 0; | |
6289 | } | |
6290 | ||
6291 | /* | |
6292 | * Helper for set_link_state(). Do not call except from that routine. | |
6293 | * Expects ppd->hls_mutex to be held. | |
6294 | * | |
6295 | * @rem_reason value to be sent to the neighbor | |
6296 | * | |
6297 | * LinkDownReasons only set if transition succeeds. | |
6298 | */ | |
6299 | static int goto_offline(struct hfi1_pportdata *ppd, u8 rem_reason) | |
6300 | { | |
6301 | struct hfi1_devdata *dd = ppd->dd; | |
6302 | u32 pstate, previous_state; | |
6303 | u32 last_local_state; | |
6304 | u32 last_remote_state; | |
6305 | int ret; | |
6306 | int do_transition; | |
6307 | int do_wait; | |
6308 | ||
6309 | previous_state = ppd->host_link_state; | |
6310 | ppd->host_link_state = HLS_GOING_OFFLINE; | |
6311 | pstate = read_physical_state(dd); | |
6312 | if (pstate == PLS_OFFLINE) { | |
6313 | do_transition = 0; /* in right state */ | |
6314 | do_wait = 0; /* ...no need to wait */ | |
6315 | } else if ((pstate & 0xff) == PLS_OFFLINE) { | |
6316 | do_transition = 0; /* in an offline transient state */ | |
6317 | do_wait = 1; /* ...wait for it to settle */ | |
6318 | } else { | |
6319 | do_transition = 1; /* need to move to offline */ | |
6320 | do_wait = 1; /* ...will need to wait */ | |
6321 | } | |
6322 | ||
6323 | if (do_transition) { | |
6324 | ret = set_physical_link_state(dd, | |
6325 | PLS_OFFLINE | (rem_reason << 8)); | |
6326 | ||
6327 | if (ret != HCMD_SUCCESS) { | |
6328 | dd_dev_err(dd, | |
6329 | "Failed to transition to Offline link state, return %d\n", | |
6330 | ret); | |
6331 | return -EINVAL; | |
6332 | } | |
6333 | if (ppd->offline_disabled_reason == OPA_LINKDOWN_REASON_NONE) | |
6334 | ppd->offline_disabled_reason = | |
6335 | OPA_LINKDOWN_REASON_TRANSIENT; | |
6336 | } | |
6337 | ||
6338 | if (do_wait) { | |
6339 | /* it can take a while for the link to go down */ | |
dc060245 | 6340 | ret = wait_phy_linkstate(dd, PLS_OFFLINE, 10000); |
77241056 MM |
6341 | if (ret < 0) |
6342 | return ret; | |
6343 | } | |
6344 | ||
6345 | /* make sure the logical state is also down */ | |
6346 | wait_logical_linkstate(ppd, IB_PORT_DOWN, 1000); | |
6347 | ||
6348 | /* | |
6349 | * Now in charge of LCB - must be after the physical state is | |
6350 | * offline.quiet and before host_link_state is changed. | |
6351 | */ | |
6352 | set_host_lcb_access(dd); | |
6353 | write_csr(dd, DC_LCB_ERR_EN, ~0ull); /* watch LCB errors */ | |
6354 | ppd->host_link_state = HLS_LINK_COOLDOWN; /* LCB access allowed */ | |
6355 | ||
6356 | /* | |
6357 | * The LNI has a mandatory wait time after the physical state | |
6358 | * moves to Offline.Quiet. The wait time may be different | |
6359 | * depending on how the link went down. The 8051 firmware | |
6360 | * will observe the needed wait time and only move to ready | |
6361 | * when that is completed. The largest of the quiet timeouts | |
6362 | * is 2.5s, so wait that long and then a bit more. | |
6363 | */ | |
6364 | ret = wait_fm_ready(dd, 3000); | |
6365 | if (ret) { | |
6366 | dd_dev_err(dd, | |
6367 | "After going offline, timed out waiting for the 8051 to become ready to accept host requests\n"); | |
6368 | /* state is really offline, so make it so */ | |
6369 | ppd->host_link_state = HLS_DN_OFFLINE; | |
6370 | return ret; | |
6371 | } | |
6372 | ||
6373 | /* | |
6374 | * The state is now offline and the 8051 is ready to accept host | |
6375 | * requests. | |
6376 | * - change our state | |
6377 | * - notify others if we were previously in a linkup state | |
6378 | */ | |
6379 | ppd->host_link_state = HLS_DN_OFFLINE; | |
6380 | if (previous_state & HLS_UP) { | |
6381 | /* went down while link was up */ | |
6382 | handle_linkup_change(dd, 0); | |
6383 | } else if (previous_state | |
6384 | & (HLS_DN_POLL | HLS_VERIFY_CAP | HLS_GOING_UP)) { | |
6385 | /* went down while attempting link up */ | |
6386 | /* byte 1 of last_*_state is the failure reason */ | |
6387 | read_last_local_state(dd, &last_local_state); | |
6388 | read_last_remote_state(dd, &last_remote_state); | |
6389 | dd_dev_err(dd, | |
6390 | "LNI failure last states: local 0x%08x, remote 0x%08x\n", | |
6391 | last_local_state, last_remote_state); | |
6392 | } | |
6393 | ||
6394 | /* the active link width (downgrade) is 0 on link down */ | |
6395 | ppd->link_width_active = 0; | |
6396 | ppd->link_width_downgrade_tx_active = 0; | |
6397 | ppd->link_width_downgrade_rx_active = 0; | |
6398 | ppd->current_egress_rate = 0; | |
6399 | return 0; | |
6400 | } | |
6401 | ||
6402 | /* return the link state name */ | |
6403 | static const char *link_state_name(u32 state) | |
6404 | { | |
6405 | const char *name; | |
6406 | int n = ilog2(state); | |
6407 | static const char * const names[] = { | |
6408 | [__HLS_UP_INIT_BP] = "INIT", | |
6409 | [__HLS_UP_ARMED_BP] = "ARMED", | |
6410 | [__HLS_UP_ACTIVE_BP] = "ACTIVE", | |
6411 | [__HLS_DN_DOWNDEF_BP] = "DOWNDEF", | |
6412 | [__HLS_DN_POLL_BP] = "POLL", | |
6413 | [__HLS_DN_DISABLE_BP] = "DISABLE", | |
6414 | [__HLS_DN_OFFLINE_BP] = "OFFLINE", | |
6415 | [__HLS_VERIFY_CAP_BP] = "VERIFY_CAP", | |
6416 | [__HLS_GOING_UP_BP] = "GOING_UP", | |
6417 | [__HLS_GOING_OFFLINE_BP] = "GOING_OFFLINE", | |
6418 | [__HLS_LINK_COOLDOWN_BP] = "LINK_COOLDOWN" | |
6419 | }; | |
6420 | ||
6421 | name = n < ARRAY_SIZE(names) ? names[n] : NULL; | |
6422 | return name ? name : "unknown"; | |
6423 | } | |
6424 | ||
6425 | /* return the link state reason name */ | |
6426 | static const char *link_state_reason_name(struct hfi1_pportdata *ppd, u32 state) | |
6427 | { | |
6428 | if (state == HLS_UP_INIT) { | |
6429 | switch (ppd->linkinit_reason) { | |
6430 | case OPA_LINKINIT_REASON_LINKUP: | |
6431 | return "(LINKUP)"; | |
6432 | case OPA_LINKINIT_REASON_FLAPPING: | |
6433 | return "(FLAPPING)"; | |
6434 | case OPA_LINKINIT_OUTSIDE_POLICY: | |
6435 | return "(OUTSIDE_POLICY)"; | |
6436 | case OPA_LINKINIT_QUARANTINED: | |
6437 | return "(QUARANTINED)"; | |
6438 | case OPA_LINKINIT_INSUFIC_CAPABILITY: | |
6439 | return "(INSUFIC_CAPABILITY)"; | |
6440 | default: | |
6441 | break; | |
6442 | } | |
6443 | } | |
6444 | return ""; | |
6445 | } | |
6446 | ||
6447 | /* | |
6448 | * driver_physical_state - convert the driver's notion of a port's | |
6449 | * state (an HLS_*) into a physical state (a {IB,OPA}_PORTPHYSSTATE_*). | |
6450 | * Return -1 (converted to a u32) to indicate error. | |
6451 | */ | |
6452 | u32 driver_physical_state(struct hfi1_pportdata *ppd) | |
6453 | { | |
6454 | switch (ppd->host_link_state) { | |
6455 | case HLS_UP_INIT: | |
6456 | case HLS_UP_ARMED: | |
6457 | case HLS_UP_ACTIVE: | |
6458 | return IB_PORTPHYSSTATE_LINKUP; | |
6459 | case HLS_DN_POLL: | |
6460 | return IB_PORTPHYSSTATE_POLLING; | |
6461 | case HLS_DN_DISABLE: | |
6462 | return IB_PORTPHYSSTATE_DISABLED; | |
6463 | case HLS_DN_OFFLINE: | |
6464 | return OPA_PORTPHYSSTATE_OFFLINE; | |
6465 | case HLS_VERIFY_CAP: | |
6466 | return IB_PORTPHYSSTATE_POLLING; | |
6467 | case HLS_GOING_UP: | |
6468 | return IB_PORTPHYSSTATE_POLLING; | |
6469 | case HLS_GOING_OFFLINE: | |
6470 | return OPA_PORTPHYSSTATE_OFFLINE; | |
6471 | case HLS_LINK_COOLDOWN: | |
6472 | return OPA_PORTPHYSSTATE_OFFLINE; | |
6473 | case HLS_DN_DOWNDEF: | |
6474 | default: | |
6475 | dd_dev_err(ppd->dd, "invalid host_link_state 0x%x\n", | |
6476 | ppd->host_link_state); | |
6477 | return -1; | |
6478 | } | |
6479 | } | |
6480 | ||
6481 | /* | |
6482 | * driver_logical_state - convert the driver's notion of a port's | |
6483 | * state (an HLS_*) into a logical state (a IB_PORT_*). Return -1 | |
6484 | * (converted to a u32) to indicate error. | |
6485 | */ | |
6486 | u32 driver_logical_state(struct hfi1_pportdata *ppd) | |
6487 | { | |
6488 | if (ppd->host_link_state && !(ppd->host_link_state & HLS_UP)) | |
6489 | return IB_PORT_DOWN; | |
6490 | ||
6491 | switch (ppd->host_link_state & HLS_UP) { | |
6492 | case HLS_UP_INIT: | |
6493 | return IB_PORT_INIT; | |
6494 | case HLS_UP_ARMED: | |
6495 | return IB_PORT_ARMED; | |
6496 | case HLS_UP_ACTIVE: | |
6497 | return IB_PORT_ACTIVE; | |
6498 | default: | |
6499 | dd_dev_err(ppd->dd, "invalid host_link_state 0x%x\n", | |
6500 | ppd->host_link_state); | |
6501 | return -1; | |
6502 | } | |
6503 | } | |
6504 | ||
6505 | void set_link_down_reason(struct hfi1_pportdata *ppd, u8 lcl_reason, | |
6506 | u8 neigh_reason, u8 rem_reason) | |
6507 | { | |
6508 | if (ppd->local_link_down_reason.latest == 0 && | |
6509 | ppd->neigh_link_down_reason.latest == 0) { | |
6510 | ppd->local_link_down_reason.latest = lcl_reason; | |
6511 | ppd->neigh_link_down_reason.latest = neigh_reason; | |
6512 | ppd->remote_link_down_reason = rem_reason; | |
6513 | } | |
6514 | } | |
6515 | ||
6516 | /* | |
6517 | * Change the physical and/or logical link state. | |
6518 | * | |
6519 | * Do not call this routine while inside an interrupt. It contains | |
6520 | * calls to routines that can take multiple seconds to finish. | |
6521 | * | |
6522 | * Returns 0 on success, -errno on failure. | |
6523 | */ | |
6524 | int set_link_state(struct hfi1_pportdata *ppd, u32 state) | |
6525 | { | |
6526 | struct hfi1_devdata *dd = ppd->dd; | |
6527 | struct ib_event event = {.device = NULL}; | |
6528 | int ret1, ret = 0; | |
6529 | int was_up, is_down; | |
6530 | int orig_new_state, poll_bounce; | |
6531 | ||
6532 | mutex_lock(&ppd->hls_lock); | |
6533 | ||
6534 | orig_new_state = state; | |
6535 | if (state == HLS_DN_DOWNDEF) | |
6536 | state = dd->link_default; | |
6537 | ||
6538 | /* interpret poll -> poll as a link bounce */ | |
6539 | poll_bounce = ppd->host_link_state == HLS_DN_POLL | |
6540 | && state == HLS_DN_POLL; | |
6541 | ||
6542 | dd_dev_info(dd, "%s: current %s, new %s %s%s\n", __func__, | |
6543 | link_state_name(ppd->host_link_state), | |
6544 | link_state_name(orig_new_state), | |
6545 | poll_bounce ? "(bounce) " : "", | |
6546 | link_state_reason_name(ppd, state)); | |
6547 | ||
6548 | was_up = !!(ppd->host_link_state & HLS_UP); | |
6549 | ||
6550 | /* | |
6551 | * If we're going to a (HLS_*) link state that implies the logical | |
6552 | * link state is neither of (IB_PORT_ARMED, IB_PORT_ACTIVE), then | |
6553 | * reset is_sm_config_started to 0. | |
6554 | */ | |
6555 | if (!(state & (HLS_UP_ARMED | HLS_UP_ACTIVE))) | |
6556 | ppd->is_sm_config_started = 0; | |
6557 | ||
6558 | /* | |
6559 | * Do nothing if the states match. Let a poll to poll link bounce | |
6560 | * go through. | |
6561 | */ | |
6562 | if (ppd->host_link_state == state && !poll_bounce) | |
6563 | goto done; | |
6564 | ||
6565 | switch (state) { | |
6566 | case HLS_UP_INIT: | |
6567 | if (ppd->host_link_state == HLS_DN_POLL && (quick_linkup | |
6568 | || dd->icode == ICODE_FUNCTIONAL_SIMULATOR)) { | |
6569 | /* | |
6570 | * Quick link up jumps from polling to here. | |
6571 | * | |
6572 | * Whether in normal or loopback mode, the | |
6573 | * simulator jumps from polling to link up. | |
6574 | * Accept that here. | |
6575 | */ | |
6576 | /* OK */; | |
6577 | } else if (ppd->host_link_state != HLS_GOING_UP) { | |
6578 | goto unexpected; | |
6579 | } | |
6580 | ||
6581 | ppd->host_link_state = HLS_UP_INIT; | |
6582 | ret = wait_logical_linkstate(ppd, IB_PORT_INIT, 1000); | |
6583 | if (ret) { | |
6584 | /* logical state didn't change, stay at going_up */ | |
6585 | ppd->host_link_state = HLS_GOING_UP; | |
6586 | dd_dev_err(dd, | |
6587 | "%s: logical state did not change to INIT\n", | |
6588 | __func__); | |
6589 | } else { | |
6590 | /* clear old transient LINKINIT_REASON code */ | |
6591 | if (ppd->linkinit_reason >= OPA_LINKINIT_REASON_CLEAR) | |
6592 | ppd->linkinit_reason = | |
6593 | OPA_LINKINIT_REASON_LINKUP; | |
6594 | ||
6595 | /* enable the port */ | |
6596 | add_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK); | |
6597 | ||
6598 | handle_linkup_change(dd, 1); | |
6599 | } | |
6600 | break; | |
6601 | case HLS_UP_ARMED: | |
6602 | if (ppd->host_link_state != HLS_UP_INIT) | |
6603 | goto unexpected; | |
6604 | ||
6605 | ppd->host_link_state = HLS_UP_ARMED; | |
6606 | set_logical_state(dd, LSTATE_ARMED); | |
6607 | ret = wait_logical_linkstate(ppd, IB_PORT_ARMED, 1000); | |
6608 | if (ret) { | |
6609 | /* logical state didn't change, stay at init */ | |
6610 | ppd->host_link_state = HLS_UP_INIT; | |
6611 | dd_dev_err(dd, | |
6612 | "%s: logical state did not change to ARMED\n", | |
6613 | __func__); | |
6614 | } | |
6615 | /* | |
6616 | * The simulator does not currently implement SMA messages, | |
6617 | * so neighbor_normal is not set. Set it here when we first | |
6618 | * move to Armed. | |
6619 | */ | |
6620 | if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR) | |
6621 | ppd->neighbor_normal = 1; | |
6622 | break; | |
6623 | case HLS_UP_ACTIVE: | |
6624 | if (ppd->host_link_state != HLS_UP_ARMED) | |
6625 | goto unexpected; | |
6626 | ||
6627 | ppd->host_link_state = HLS_UP_ACTIVE; | |
6628 | set_logical_state(dd, LSTATE_ACTIVE); | |
6629 | ret = wait_logical_linkstate(ppd, IB_PORT_ACTIVE, 1000); | |
6630 | if (ret) { | |
6631 | /* logical state didn't change, stay at armed */ | |
6632 | ppd->host_link_state = HLS_UP_ARMED; | |
6633 | dd_dev_err(dd, | |
6634 | "%s: logical state did not change to ACTIVE\n", | |
6635 | __func__); | |
6636 | } else { | |
6637 | ||
6638 | /* tell all engines to go running */ | |
6639 | sdma_all_running(dd); | |
6640 | ||
6641 | /* Signal the IB layer that the port has went active */ | |
6642 | event.device = &dd->verbs_dev.ibdev; | |
6643 | event.element.port_num = ppd->port; | |
6644 | event.event = IB_EVENT_PORT_ACTIVE; | |
6645 | } | |
6646 | break; | |
6647 | case HLS_DN_POLL: | |
6648 | if ((ppd->host_link_state == HLS_DN_DISABLE || | |
6649 | ppd->host_link_state == HLS_DN_OFFLINE) && | |
6650 | dd->dc_shutdown) | |
6651 | dc_start(dd); | |
6652 | /* Hand LED control to the DC */ | |
6653 | write_csr(dd, DCC_CFG_LED_CNTRL, 0); | |
6654 | ||
6655 | if (ppd->host_link_state != HLS_DN_OFFLINE) { | |
6656 | u8 tmp = ppd->link_enabled; | |
6657 | ||
6658 | ret = goto_offline(ppd, ppd->remote_link_down_reason); | |
6659 | if (ret) { | |
6660 | ppd->link_enabled = tmp; | |
6661 | break; | |
6662 | } | |
6663 | ppd->remote_link_down_reason = 0; | |
6664 | ||
6665 | if (ppd->driver_link_ready) | |
6666 | ppd->link_enabled = 1; | |
6667 | } | |
6668 | ||
6669 | ret = set_local_link_attributes(ppd); | |
6670 | if (ret) | |
6671 | break; | |
6672 | ||
6673 | ppd->port_error_action = 0; | |
6674 | ppd->host_link_state = HLS_DN_POLL; | |
6675 | ||
6676 | if (quick_linkup) { | |
6677 | /* quick linkup does not go into polling */ | |
6678 | ret = do_quick_linkup(dd); | |
6679 | } else { | |
6680 | ret1 = set_physical_link_state(dd, PLS_POLLING); | |
6681 | if (ret1 != HCMD_SUCCESS) { | |
6682 | dd_dev_err(dd, | |
6683 | "Failed to transition to Polling link state, return 0x%x\n", | |
6684 | ret1); | |
6685 | ret = -EINVAL; | |
6686 | } | |
6687 | } | |
6688 | ppd->offline_disabled_reason = OPA_LINKDOWN_REASON_NONE; | |
6689 | /* | |
6690 | * If an error occurred above, go back to offline. The | |
6691 | * caller may reschedule another attempt. | |
6692 | */ | |
6693 | if (ret) | |
6694 | goto_offline(ppd, 0); | |
6695 | break; | |
6696 | case HLS_DN_DISABLE: | |
6697 | /* link is disabled */ | |
6698 | ppd->link_enabled = 0; | |
6699 | ||
6700 | /* allow any state to transition to disabled */ | |
6701 | ||
6702 | /* must transition to offline first */ | |
6703 | if (ppd->host_link_state != HLS_DN_OFFLINE) { | |
6704 | ret = goto_offline(ppd, ppd->remote_link_down_reason); | |
6705 | if (ret) | |
6706 | break; | |
6707 | ppd->remote_link_down_reason = 0; | |
6708 | } | |
6709 | ||
6710 | ret1 = set_physical_link_state(dd, PLS_DISABLED); | |
6711 | if (ret1 != HCMD_SUCCESS) { | |
6712 | dd_dev_err(dd, | |
6713 | "Failed to transition to Disabled link state, return 0x%x\n", | |
6714 | ret1); | |
6715 | ret = -EINVAL; | |
6716 | break; | |
6717 | } | |
6718 | ppd->host_link_state = HLS_DN_DISABLE; | |
6719 | dc_shutdown(dd); | |
6720 | break; | |
6721 | case HLS_DN_OFFLINE: | |
6722 | if (ppd->host_link_state == HLS_DN_DISABLE) | |
6723 | dc_start(dd); | |
6724 | ||
6725 | /* allow any state to transition to offline */ | |
6726 | ret = goto_offline(ppd, ppd->remote_link_down_reason); | |
6727 | if (!ret) | |
6728 | ppd->remote_link_down_reason = 0; | |
6729 | break; | |
6730 | case HLS_VERIFY_CAP: | |
6731 | if (ppd->host_link_state != HLS_DN_POLL) | |
6732 | goto unexpected; | |
6733 | ppd->host_link_state = HLS_VERIFY_CAP; | |
6734 | break; | |
6735 | case HLS_GOING_UP: | |
6736 | if (ppd->host_link_state != HLS_VERIFY_CAP) | |
6737 | goto unexpected; | |
6738 | ||
6739 | ret1 = set_physical_link_state(dd, PLS_LINKUP); | |
6740 | if (ret1 != HCMD_SUCCESS) { | |
6741 | dd_dev_err(dd, | |
6742 | "Failed to transition to link up state, return 0x%x\n", | |
6743 | ret1); | |
6744 | ret = -EINVAL; | |
6745 | break; | |
6746 | } | |
6747 | ppd->host_link_state = HLS_GOING_UP; | |
6748 | break; | |
6749 | ||
6750 | case HLS_GOING_OFFLINE: /* transient within goto_offline() */ | |
6751 | case HLS_LINK_COOLDOWN: /* transient within goto_offline() */ | |
6752 | default: | |
6753 | dd_dev_info(dd, "%s: state 0x%x: not supported\n", | |
6754 | __func__, state); | |
6755 | ret = -EINVAL; | |
6756 | break; | |
6757 | } | |
6758 | ||
6759 | is_down = !!(ppd->host_link_state & (HLS_DN_POLL | | |
6760 | HLS_DN_DISABLE | HLS_DN_OFFLINE)); | |
6761 | ||
6762 | if (was_up && is_down && ppd->local_link_down_reason.sma == 0 && | |
6763 | ppd->neigh_link_down_reason.sma == 0) { | |
6764 | ppd->local_link_down_reason.sma = | |
6765 | ppd->local_link_down_reason.latest; | |
6766 | ppd->neigh_link_down_reason.sma = | |
6767 | ppd->neigh_link_down_reason.latest; | |
6768 | } | |
6769 | ||
6770 | goto done; | |
6771 | ||
6772 | unexpected: | |
6773 | dd_dev_err(dd, "%s: unexpected state transition from %s to %s\n", | |
6774 | __func__, link_state_name(ppd->host_link_state), | |
6775 | link_state_name(state)); | |
6776 | ret = -EINVAL; | |
6777 | ||
6778 | done: | |
6779 | mutex_unlock(&ppd->hls_lock); | |
6780 | ||
6781 | if (event.device) | |
6782 | ib_dispatch_event(&event); | |
6783 | ||
6784 | return ret; | |
6785 | } | |
6786 | ||
6787 | int hfi1_set_ib_cfg(struct hfi1_pportdata *ppd, int which, u32 val) | |
6788 | { | |
6789 | u64 reg; | |
6790 | int ret = 0; | |
6791 | ||
6792 | switch (which) { | |
6793 | case HFI1_IB_CFG_LIDLMC: | |
6794 | set_lidlmc(ppd); | |
6795 | break; | |
6796 | case HFI1_IB_CFG_VL_HIGH_LIMIT: | |
6797 | /* | |
6798 | * The VL Arbitrator high limit is sent in units of 4k | |
6799 | * bytes, while HFI stores it in units of 64 bytes. | |
6800 | */ | |
6801 | val *= 4096/64; | |
6802 | reg = ((u64)val & SEND_HIGH_PRIORITY_LIMIT_LIMIT_MASK) | |
6803 | << SEND_HIGH_PRIORITY_LIMIT_LIMIT_SHIFT; | |
6804 | write_csr(ppd->dd, SEND_HIGH_PRIORITY_LIMIT, reg); | |
6805 | break; | |
6806 | case HFI1_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */ | |
6807 | /* HFI only supports POLL as the default link down state */ | |
6808 | if (val != HLS_DN_POLL) | |
6809 | ret = -EINVAL; | |
6810 | break; | |
6811 | case HFI1_IB_CFG_OP_VLS: | |
6812 | if (ppd->vls_operational != val) { | |
6813 | ppd->vls_operational = val; | |
6814 | if (!ppd->port) | |
6815 | ret = -EINVAL; | |
6816 | else | |
6817 | ret = sdma_map_init( | |
6818 | ppd->dd, | |
6819 | ppd->port - 1, | |
6820 | val, | |
6821 | NULL); | |
6822 | } | |
6823 | break; | |
6824 | /* | |
6825 | * For link width, link width downgrade, and speed enable, always AND | |
6826 | * the setting with what is actually supported. This has two benefits. | |
6827 | * First, enabled can't have unsupported values, no matter what the | |
6828 | * SM or FM might want. Second, the ALL_SUPPORTED wildcards that mean | |
6829 | * "fill in with your supported value" have all the bits in the | |
6830 | * field set, so simply ANDing with supported has the desired result. | |
6831 | */ | |
6832 | case HFI1_IB_CFG_LWID_ENB: /* set allowed Link-width */ | |
6833 | ppd->link_width_enabled = val & ppd->link_width_supported; | |
6834 | break; | |
6835 | case HFI1_IB_CFG_LWID_DG_ENB: /* set allowed link width downgrade */ | |
6836 | ppd->link_width_downgrade_enabled = | |
6837 | val & ppd->link_width_downgrade_supported; | |
6838 | break; | |
6839 | case HFI1_IB_CFG_SPD_ENB: /* allowed Link speeds */ | |
6840 | ppd->link_speed_enabled = val & ppd->link_speed_supported; | |
6841 | break; | |
6842 | case HFI1_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */ | |
6843 | /* | |
6844 | * HFI does not follow IB specs, save this value | |
6845 | * so we can report it, if asked. | |
6846 | */ | |
6847 | ppd->overrun_threshold = val; | |
6848 | break; | |
6849 | case HFI1_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */ | |
6850 | /* | |
6851 | * HFI does not follow IB specs, save this value | |
6852 | * so we can report it, if asked. | |
6853 | */ | |
6854 | ppd->phy_error_threshold = val; | |
6855 | break; | |
6856 | ||
6857 | case HFI1_IB_CFG_MTU: | |
6858 | set_send_length(ppd); | |
6859 | break; | |
6860 | ||
6861 | case HFI1_IB_CFG_PKEYS: | |
6862 | if (HFI1_CAP_IS_KSET(PKEY_CHECK)) | |
6863 | set_partition_keys(ppd); | |
6864 | break; | |
6865 | ||
6866 | default: | |
6867 | if (HFI1_CAP_IS_KSET(PRINT_UNIMPL)) | |
6868 | dd_dev_info(ppd->dd, | |
6869 | "%s: which %s, val 0x%x: not implemented\n", | |
6870 | __func__, ib_cfg_name(which), val); | |
6871 | break; | |
6872 | } | |
6873 | return ret; | |
6874 | } | |
6875 | ||
6876 | /* begin functions related to vl arbitration table caching */ | |
6877 | static void init_vl_arb_caches(struct hfi1_pportdata *ppd) | |
6878 | { | |
6879 | int i; | |
6880 | ||
6881 | BUILD_BUG_ON(VL_ARB_TABLE_SIZE != | |
6882 | VL_ARB_LOW_PRIO_TABLE_SIZE); | |
6883 | BUILD_BUG_ON(VL_ARB_TABLE_SIZE != | |
6884 | VL_ARB_HIGH_PRIO_TABLE_SIZE); | |
6885 | ||
6886 | /* | |
6887 | * Note that we always return values directly from the | |
6888 | * 'vl_arb_cache' (and do no CSR reads) in response to a | |
6889 | * 'Get(VLArbTable)'. This is obviously correct after a | |
6890 | * 'Set(VLArbTable)', since the cache will then be up to | |
6891 | * date. But it's also correct prior to any 'Set(VLArbTable)' | |
6892 | * since then both the cache, and the relevant h/w registers | |
6893 | * will be zeroed. | |
6894 | */ | |
6895 | ||
6896 | for (i = 0; i < MAX_PRIO_TABLE; i++) | |
6897 | spin_lock_init(&ppd->vl_arb_cache[i].lock); | |
6898 | } | |
6899 | ||
6900 | /* | |
6901 | * vl_arb_lock_cache | |
6902 | * | |
6903 | * All other vl_arb_* functions should be called only after locking | |
6904 | * the cache. | |
6905 | */ | |
6906 | static inline struct vl_arb_cache * | |
6907 | vl_arb_lock_cache(struct hfi1_pportdata *ppd, int idx) | |
6908 | { | |
6909 | if (idx != LO_PRIO_TABLE && idx != HI_PRIO_TABLE) | |
6910 | return NULL; | |
6911 | spin_lock(&ppd->vl_arb_cache[idx].lock); | |
6912 | return &ppd->vl_arb_cache[idx]; | |
6913 | } | |
6914 | ||
6915 | static inline void vl_arb_unlock_cache(struct hfi1_pportdata *ppd, int idx) | |
6916 | { | |
6917 | spin_unlock(&ppd->vl_arb_cache[idx].lock); | |
6918 | } | |
6919 | ||
6920 | static void vl_arb_get_cache(struct vl_arb_cache *cache, | |
6921 | struct ib_vl_weight_elem *vl) | |
6922 | { | |
6923 | memcpy(vl, cache->table, VL_ARB_TABLE_SIZE * sizeof(*vl)); | |
6924 | } | |
6925 | ||
6926 | static void vl_arb_set_cache(struct vl_arb_cache *cache, | |
6927 | struct ib_vl_weight_elem *vl) | |
6928 | { | |
6929 | memcpy(cache->table, vl, VL_ARB_TABLE_SIZE * sizeof(*vl)); | |
6930 | } | |
6931 | ||
6932 | static int vl_arb_match_cache(struct vl_arb_cache *cache, | |
6933 | struct ib_vl_weight_elem *vl) | |
6934 | { | |
6935 | return !memcmp(cache->table, vl, VL_ARB_TABLE_SIZE * sizeof(*vl)); | |
6936 | } | |
6937 | /* end functions related to vl arbitration table caching */ | |
6938 | ||
6939 | static int set_vl_weights(struct hfi1_pportdata *ppd, u32 target, | |
6940 | u32 size, struct ib_vl_weight_elem *vl) | |
6941 | { | |
6942 | struct hfi1_devdata *dd = ppd->dd; | |
6943 | u64 reg; | |
6944 | unsigned int i, is_up = 0; | |
6945 | int drain, ret = 0; | |
6946 | ||
6947 | mutex_lock(&ppd->hls_lock); | |
6948 | ||
6949 | if (ppd->host_link_state & HLS_UP) | |
6950 | is_up = 1; | |
6951 | ||
6952 | drain = !is_ax(dd) && is_up; | |
6953 | ||
6954 | if (drain) | |
6955 | /* | |
6956 | * Before adjusting VL arbitration weights, empty per-VL | |
6957 | * FIFOs, otherwise a packet whose VL weight is being | |
6958 | * set to 0 could get stuck in a FIFO with no chance to | |
6959 | * egress. | |
6960 | */ | |
6961 | ret = stop_drain_data_vls(dd); | |
6962 | ||
6963 | if (ret) { | |
6964 | dd_dev_err( | |
6965 | dd, | |
6966 | "%s: cannot stop/drain VLs - refusing to change VL arbitration weights\n", | |
6967 | __func__); | |
6968 | goto err; | |
6969 | } | |
6970 | ||
6971 | for (i = 0; i < size; i++, vl++) { | |
6972 | /* | |
6973 | * NOTE: The low priority shift and mask are used here, but | |
6974 | * they are the same for both the low and high registers. | |
6975 | */ | |
6976 | reg = (((u64)vl->vl & SEND_LOW_PRIORITY_LIST_VL_MASK) | |
6977 | << SEND_LOW_PRIORITY_LIST_VL_SHIFT) | |
6978 | | (((u64)vl->weight | |
6979 | & SEND_LOW_PRIORITY_LIST_WEIGHT_MASK) | |
6980 | << SEND_LOW_PRIORITY_LIST_WEIGHT_SHIFT); | |
6981 | write_csr(dd, target + (i * 8), reg); | |
6982 | } | |
6983 | pio_send_control(dd, PSC_GLOBAL_VLARB_ENABLE); | |
6984 | ||
6985 | if (drain) | |
6986 | open_fill_data_vls(dd); /* reopen all VLs */ | |
6987 | ||
6988 | err: | |
6989 | mutex_unlock(&ppd->hls_lock); | |
6990 | ||
6991 | return ret; | |
6992 | } | |
6993 | ||
6994 | /* | |
6995 | * Read one credit merge VL register. | |
6996 | */ | |
6997 | static void read_one_cm_vl(struct hfi1_devdata *dd, u32 csr, | |
6998 | struct vl_limit *vll) | |
6999 | { | |
7000 | u64 reg = read_csr(dd, csr); | |
7001 | ||
7002 | vll->dedicated = cpu_to_be16( | |
7003 | (reg >> SEND_CM_CREDIT_VL_DEDICATED_LIMIT_VL_SHIFT) | |
7004 | & SEND_CM_CREDIT_VL_DEDICATED_LIMIT_VL_MASK); | |
7005 | vll->shared = cpu_to_be16( | |
7006 | (reg >> SEND_CM_CREDIT_VL_SHARED_LIMIT_VL_SHIFT) | |
7007 | & SEND_CM_CREDIT_VL_SHARED_LIMIT_VL_MASK); | |
7008 | } | |
7009 | ||
7010 | /* | |
7011 | * Read the current credit merge limits. | |
7012 | */ | |
7013 | static int get_buffer_control(struct hfi1_devdata *dd, | |
7014 | struct buffer_control *bc, u16 *overall_limit) | |
7015 | { | |
7016 | u64 reg; | |
7017 | int i; | |
7018 | ||
7019 | /* not all entries are filled in */ | |
7020 | memset(bc, 0, sizeof(*bc)); | |
7021 | ||
7022 | /* OPA and HFI have a 1-1 mapping */ | |
7023 | for (i = 0; i < TXE_NUM_DATA_VL; i++) | |
7024 | read_one_cm_vl(dd, SEND_CM_CREDIT_VL + (8*i), &bc->vl[i]); | |
7025 | ||
7026 | /* NOTE: assumes that VL* and VL15 CSRs are bit-wise identical */ | |
7027 | read_one_cm_vl(dd, SEND_CM_CREDIT_VL15, &bc->vl[15]); | |
7028 | ||
7029 | reg = read_csr(dd, SEND_CM_GLOBAL_CREDIT); | |
7030 | bc->overall_shared_limit = cpu_to_be16( | |
7031 | (reg >> SEND_CM_GLOBAL_CREDIT_SHARED_LIMIT_SHIFT) | |
7032 | & SEND_CM_GLOBAL_CREDIT_SHARED_LIMIT_MASK); | |
7033 | if (overall_limit) | |
7034 | *overall_limit = (reg | |
7035 | >> SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT) | |
7036 | & SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_MASK; | |
7037 | return sizeof(struct buffer_control); | |
7038 | } | |
7039 | ||
7040 | static int get_sc2vlnt(struct hfi1_devdata *dd, struct sc2vlnt *dp) | |
7041 | { | |
7042 | u64 reg; | |
7043 | int i; | |
7044 | ||
7045 | /* each register contains 16 SC->VLnt mappings, 4 bits each */ | |
7046 | reg = read_csr(dd, DCC_CFG_SC_VL_TABLE_15_0); | |
7047 | for (i = 0; i < sizeof(u64); i++) { | |
7048 | u8 byte = *(((u8 *)®) + i); | |
7049 | ||
7050 | dp->vlnt[2 * i] = byte & 0xf; | |
7051 | dp->vlnt[(2 * i) + 1] = (byte & 0xf0) >> 4; | |
7052 | } | |
7053 | ||
7054 | reg = read_csr(dd, DCC_CFG_SC_VL_TABLE_31_16); | |
7055 | for (i = 0; i < sizeof(u64); i++) { | |
7056 | u8 byte = *(((u8 *)®) + i); | |
7057 | ||
7058 | dp->vlnt[16 + (2 * i)] = byte & 0xf; | |
7059 | dp->vlnt[16 + (2 * i) + 1] = (byte & 0xf0) >> 4; | |
7060 | } | |
7061 | return sizeof(struct sc2vlnt); | |
7062 | } | |
7063 | ||
7064 | static void get_vlarb_preempt(struct hfi1_devdata *dd, u32 nelems, | |
7065 | struct ib_vl_weight_elem *vl) | |
7066 | { | |
7067 | unsigned int i; | |
7068 | ||
7069 | for (i = 0; i < nelems; i++, vl++) { | |
7070 | vl->vl = 0xf; | |
7071 | vl->weight = 0; | |
7072 | } | |
7073 | } | |
7074 | ||
7075 | static void set_sc2vlnt(struct hfi1_devdata *dd, struct sc2vlnt *dp) | |
7076 | { | |
7077 | write_csr(dd, DCC_CFG_SC_VL_TABLE_15_0, | |
7078 | DC_SC_VL_VAL(15_0, | |
7079 | 0, dp->vlnt[0] & 0xf, | |
7080 | 1, dp->vlnt[1] & 0xf, | |
7081 | 2, dp->vlnt[2] & 0xf, | |
7082 | 3, dp->vlnt[3] & 0xf, | |
7083 | 4, dp->vlnt[4] & 0xf, | |
7084 | 5, dp->vlnt[5] & 0xf, | |
7085 | 6, dp->vlnt[6] & 0xf, | |
7086 | 7, dp->vlnt[7] & 0xf, | |
7087 | 8, dp->vlnt[8] & 0xf, | |
7088 | 9, dp->vlnt[9] & 0xf, | |
7089 | 10, dp->vlnt[10] & 0xf, | |
7090 | 11, dp->vlnt[11] & 0xf, | |
7091 | 12, dp->vlnt[12] & 0xf, | |
7092 | 13, dp->vlnt[13] & 0xf, | |
7093 | 14, dp->vlnt[14] & 0xf, | |
7094 | 15, dp->vlnt[15] & 0xf)); | |
7095 | write_csr(dd, DCC_CFG_SC_VL_TABLE_31_16, | |
7096 | DC_SC_VL_VAL(31_16, | |
7097 | 16, dp->vlnt[16] & 0xf, | |
7098 | 17, dp->vlnt[17] & 0xf, | |
7099 | 18, dp->vlnt[18] & 0xf, | |
7100 | 19, dp->vlnt[19] & 0xf, | |
7101 | 20, dp->vlnt[20] & 0xf, | |
7102 | 21, dp->vlnt[21] & 0xf, | |
7103 | 22, dp->vlnt[22] & 0xf, | |
7104 | 23, dp->vlnt[23] & 0xf, | |
7105 | 24, dp->vlnt[24] & 0xf, | |
7106 | 25, dp->vlnt[25] & 0xf, | |
7107 | 26, dp->vlnt[26] & 0xf, | |
7108 | 27, dp->vlnt[27] & 0xf, | |
7109 | 28, dp->vlnt[28] & 0xf, | |
7110 | 29, dp->vlnt[29] & 0xf, | |
7111 | 30, dp->vlnt[30] & 0xf, | |
7112 | 31, dp->vlnt[31] & 0xf)); | |
7113 | } | |
7114 | ||
7115 | static void nonzero_msg(struct hfi1_devdata *dd, int idx, const char *what, | |
7116 | u16 limit) | |
7117 | { | |
7118 | if (limit != 0) | |
7119 | dd_dev_info(dd, "Invalid %s limit %d on VL %d, ignoring\n", | |
7120 | what, (int)limit, idx); | |
7121 | } | |
7122 | ||
7123 | /* change only the shared limit portion of SendCmGLobalCredit */ | |
7124 | static void set_global_shared(struct hfi1_devdata *dd, u16 limit) | |
7125 | { | |
7126 | u64 reg; | |
7127 | ||
7128 | reg = read_csr(dd, SEND_CM_GLOBAL_CREDIT); | |
7129 | reg &= ~SEND_CM_GLOBAL_CREDIT_SHARED_LIMIT_SMASK; | |
7130 | reg |= (u64)limit << SEND_CM_GLOBAL_CREDIT_SHARED_LIMIT_SHIFT; | |
7131 | write_csr(dd, SEND_CM_GLOBAL_CREDIT, reg); | |
7132 | } | |
7133 | ||
7134 | /* change only the total credit limit portion of SendCmGLobalCredit */ | |
7135 | static void set_global_limit(struct hfi1_devdata *dd, u16 limit) | |
7136 | { | |
7137 | u64 reg; | |
7138 | ||
7139 | reg = read_csr(dd, SEND_CM_GLOBAL_CREDIT); | |
7140 | reg &= ~SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SMASK; | |
7141 | reg |= (u64)limit << SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT; | |
7142 | write_csr(dd, SEND_CM_GLOBAL_CREDIT, reg); | |
7143 | } | |
7144 | ||
7145 | /* set the given per-VL shared limit */ | |
7146 | static void set_vl_shared(struct hfi1_devdata *dd, int vl, u16 limit) | |
7147 | { | |
7148 | u64 reg; | |
7149 | u32 addr; | |
7150 | ||
7151 | if (vl < TXE_NUM_DATA_VL) | |
7152 | addr = SEND_CM_CREDIT_VL + (8 * vl); | |
7153 | else | |
7154 | addr = SEND_CM_CREDIT_VL15; | |
7155 | ||
7156 | reg = read_csr(dd, addr); | |
7157 | reg &= ~SEND_CM_CREDIT_VL_SHARED_LIMIT_VL_SMASK; | |
7158 | reg |= (u64)limit << SEND_CM_CREDIT_VL_SHARED_LIMIT_VL_SHIFT; | |
7159 | write_csr(dd, addr, reg); | |
7160 | } | |
7161 | ||
7162 | /* set the given per-VL dedicated limit */ | |
7163 | static void set_vl_dedicated(struct hfi1_devdata *dd, int vl, u16 limit) | |
7164 | { | |
7165 | u64 reg; | |
7166 | u32 addr; | |
7167 | ||
7168 | if (vl < TXE_NUM_DATA_VL) | |
7169 | addr = SEND_CM_CREDIT_VL + (8 * vl); | |
7170 | else | |
7171 | addr = SEND_CM_CREDIT_VL15; | |
7172 | ||
7173 | reg = read_csr(dd, addr); | |
7174 | reg &= ~SEND_CM_CREDIT_VL_DEDICATED_LIMIT_VL_SMASK; | |
7175 | reg |= (u64)limit << SEND_CM_CREDIT_VL_DEDICATED_LIMIT_VL_SHIFT; | |
7176 | write_csr(dd, addr, reg); | |
7177 | } | |
7178 | ||
7179 | /* spin until the given per-VL status mask bits clear */ | |
7180 | static void wait_for_vl_status_clear(struct hfi1_devdata *dd, u64 mask, | |
7181 | const char *which) | |
7182 | { | |
7183 | unsigned long timeout; | |
7184 | u64 reg; | |
7185 | ||
7186 | timeout = jiffies + msecs_to_jiffies(VL_STATUS_CLEAR_TIMEOUT); | |
7187 | while (1) { | |
7188 | reg = read_csr(dd, SEND_CM_CREDIT_USED_STATUS) & mask; | |
7189 | ||
7190 | if (reg == 0) | |
7191 | return; /* success */ | |
7192 | if (time_after(jiffies, timeout)) | |
7193 | break; /* timed out */ | |
7194 | udelay(1); | |
7195 | } | |
7196 | ||
7197 | dd_dev_err(dd, | |
7198 | "%s credit change status not clearing after %dms, mask 0x%llx, not clear 0x%llx\n", | |
7199 | which, VL_STATUS_CLEAR_TIMEOUT, mask, reg); | |
7200 | /* | |
7201 | * If this occurs, it is likely there was a credit loss on the link. | |
7202 | * The only recovery from that is a link bounce. | |
7203 | */ | |
7204 | dd_dev_err(dd, | |
7205 | "Continuing anyway. A credit loss may occur. Suggest a link bounce\n"); | |
7206 | } | |
7207 | ||
7208 | /* | |
7209 | * The number of credits on the VLs may be changed while everything | |
7210 | * is "live", but the following algorithm must be followed due to | |
7211 | * how the hardware is actually implemented. In particular, | |
7212 | * Return_Credit_Status[] is the only correct status check. | |
7213 | * | |
7214 | * if (reducing Global_Shared_Credit_Limit or any shared limit changing) | |
7215 | * set Global_Shared_Credit_Limit = 0 | |
7216 | * use_all_vl = 1 | |
7217 | * mask0 = all VLs that are changing either dedicated or shared limits | |
7218 | * set Shared_Limit[mask0] = 0 | |
7219 | * spin until Return_Credit_Status[use_all_vl ? all VL : mask0] == 0 | |
7220 | * if (changing any dedicated limit) | |
7221 | * mask1 = all VLs that are lowering dedicated limits | |
7222 | * lower Dedicated_Limit[mask1] | |
7223 | * spin until Return_Credit_Status[mask1] == 0 | |
7224 | * raise Dedicated_Limits | |
7225 | * raise Shared_Limits | |
7226 | * raise Global_Shared_Credit_Limit | |
7227 | * | |
7228 | * lower = if the new limit is lower, set the limit to the new value | |
7229 | * raise = if the new limit is higher than the current value (may be changed | |
7230 | * earlier in the algorithm), set the new limit to the new value | |
7231 | */ | |
7232 | static int set_buffer_control(struct hfi1_devdata *dd, | |
7233 | struct buffer_control *new_bc) | |
7234 | { | |
7235 | u64 changing_mask, ld_mask, stat_mask; | |
7236 | int change_count; | |
7237 | int i, use_all_mask; | |
7238 | int this_shared_changing; | |
7239 | /* | |
7240 | * A0: add the variable any_shared_limit_changing below and in the | |
7241 | * algorithm above. If removing A0 support, it can be removed. | |
7242 | */ | |
7243 | int any_shared_limit_changing; | |
7244 | struct buffer_control cur_bc; | |
7245 | u8 changing[OPA_MAX_VLS]; | |
7246 | u8 lowering_dedicated[OPA_MAX_VLS]; | |
7247 | u16 cur_total; | |
7248 | u32 new_total = 0; | |
7249 | const u64 all_mask = | |
7250 | SEND_CM_CREDIT_USED_STATUS_VL0_RETURN_CREDIT_STATUS_SMASK | |
7251 | | SEND_CM_CREDIT_USED_STATUS_VL1_RETURN_CREDIT_STATUS_SMASK | |
7252 | | SEND_CM_CREDIT_USED_STATUS_VL2_RETURN_CREDIT_STATUS_SMASK | |
7253 | | SEND_CM_CREDIT_USED_STATUS_VL3_RETURN_CREDIT_STATUS_SMASK | |
7254 | | SEND_CM_CREDIT_USED_STATUS_VL4_RETURN_CREDIT_STATUS_SMASK | |
7255 | | SEND_CM_CREDIT_USED_STATUS_VL5_RETURN_CREDIT_STATUS_SMASK | |
7256 | | SEND_CM_CREDIT_USED_STATUS_VL6_RETURN_CREDIT_STATUS_SMASK | |
7257 | | SEND_CM_CREDIT_USED_STATUS_VL7_RETURN_CREDIT_STATUS_SMASK | |
7258 | | SEND_CM_CREDIT_USED_STATUS_VL15_RETURN_CREDIT_STATUS_SMASK; | |
7259 | ||
7260 | #define valid_vl(idx) ((idx) < TXE_NUM_DATA_VL || (idx) == 15) | |
7261 | #define NUM_USABLE_VLS 16 /* look at VL15 and less */ | |
7262 | ||
7263 | ||
7264 | /* find the new total credits, do sanity check on unused VLs */ | |
7265 | for (i = 0; i < OPA_MAX_VLS; i++) { | |
7266 | if (valid_vl(i)) { | |
7267 | new_total += be16_to_cpu(new_bc->vl[i].dedicated); | |
7268 | continue; | |
7269 | } | |
7270 | nonzero_msg(dd, i, "dedicated", | |
7271 | be16_to_cpu(new_bc->vl[i].dedicated)); | |
7272 | nonzero_msg(dd, i, "shared", | |
7273 | be16_to_cpu(new_bc->vl[i].shared)); | |
7274 | new_bc->vl[i].dedicated = 0; | |
7275 | new_bc->vl[i].shared = 0; | |
7276 | } | |
7277 | new_total += be16_to_cpu(new_bc->overall_shared_limit); | |
7278 | if (new_total > (u32)dd->link_credits) | |
7279 | return -EINVAL; | |
7280 | /* fetch the current values */ | |
7281 | get_buffer_control(dd, &cur_bc, &cur_total); | |
7282 | ||
7283 | /* | |
7284 | * Create the masks we will use. | |
7285 | */ | |
7286 | memset(changing, 0, sizeof(changing)); | |
7287 | memset(lowering_dedicated, 0, sizeof(lowering_dedicated)); | |
7288 | /* NOTE: Assumes that the individual VL bits are adjacent and in | |
7289 | increasing order */ | |
7290 | stat_mask = | |
7291 | SEND_CM_CREDIT_USED_STATUS_VL0_RETURN_CREDIT_STATUS_SMASK; | |
7292 | changing_mask = 0; | |
7293 | ld_mask = 0; | |
7294 | change_count = 0; | |
7295 | any_shared_limit_changing = 0; | |
7296 | for (i = 0; i < NUM_USABLE_VLS; i++, stat_mask <<= 1) { | |
7297 | if (!valid_vl(i)) | |
7298 | continue; | |
7299 | this_shared_changing = new_bc->vl[i].shared | |
7300 | != cur_bc.vl[i].shared; | |
7301 | if (this_shared_changing) | |
7302 | any_shared_limit_changing = 1; | |
7303 | if (new_bc->vl[i].dedicated != cur_bc.vl[i].dedicated | |
7304 | || this_shared_changing) { | |
7305 | changing[i] = 1; | |
7306 | changing_mask |= stat_mask; | |
7307 | change_count++; | |
7308 | } | |
7309 | if (be16_to_cpu(new_bc->vl[i].dedicated) < | |
7310 | be16_to_cpu(cur_bc.vl[i].dedicated)) { | |
7311 | lowering_dedicated[i] = 1; | |
7312 | ld_mask |= stat_mask; | |
7313 | } | |
7314 | } | |
7315 | ||
7316 | /* bracket the credit change with a total adjustment */ | |
7317 | if (new_total > cur_total) | |
7318 | set_global_limit(dd, new_total); | |
7319 | ||
7320 | /* | |
7321 | * Start the credit change algorithm. | |
7322 | */ | |
7323 | use_all_mask = 0; | |
7324 | if ((be16_to_cpu(new_bc->overall_shared_limit) < | |
995deafa MM |
7325 | be16_to_cpu(cur_bc.overall_shared_limit)) || |
7326 | (is_ax(dd) && any_shared_limit_changing)) { | |
77241056 MM |
7327 | set_global_shared(dd, 0); |
7328 | cur_bc.overall_shared_limit = 0; | |
7329 | use_all_mask = 1; | |
7330 | } | |
7331 | ||
7332 | for (i = 0; i < NUM_USABLE_VLS; i++) { | |
7333 | if (!valid_vl(i)) | |
7334 | continue; | |
7335 | ||
7336 | if (changing[i]) { | |
7337 | set_vl_shared(dd, i, 0); | |
7338 | cur_bc.vl[i].shared = 0; | |
7339 | } | |
7340 | } | |
7341 | ||
7342 | wait_for_vl_status_clear(dd, use_all_mask ? all_mask : changing_mask, | |
7343 | "shared"); | |
7344 | ||
7345 | if (change_count > 0) { | |
7346 | for (i = 0; i < NUM_USABLE_VLS; i++) { | |
7347 | if (!valid_vl(i)) | |
7348 | continue; | |
7349 | ||
7350 | if (lowering_dedicated[i]) { | |
7351 | set_vl_dedicated(dd, i, | |
7352 | be16_to_cpu(new_bc->vl[i].dedicated)); | |
7353 | cur_bc.vl[i].dedicated = | |
7354 | new_bc->vl[i].dedicated; | |
7355 | } | |
7356 | } | |
7357 | ||
7358 | wait_for_vl_status_clear(dd, ld_mask, "dedicated"); | |
7359 | ||
7360 | /* now raise all dedicated that are going up */ | |
7361 | for (i = 0; i < NUM_USABLE_VLS; i++) { | |
7362 | if (!valid_vl(i)) | |
7363 | continue; | |
7364 | ||
7365 | if (be16_to_cpu(new_bc->vl[i].dedicated) > | |
7366 | be16_to_cpu(cur_bc.vl[i].dedicated)) | |
7367 | set_vl_dedicated(dd, i, | |
7368 | be16_to_cpu(new_bc->vl[i].dedicated)); | |
7369 | } | |
7370 | } | |
7371 | ||
7372 | /* next raise all shared that are going up */ | |
7373 | for (i = 0; i < NUM_USABLE_VLS; i++) { | |
7374 | if (!valid_vl(i)) | |
7375 | continue; | |
7376 | ||
7377 | if (be16_to_cpu(new_bc->vl[i].shared) > | |
7378 | be16_to_cpu(cur_bc.vl[i].shared)) | |
7379 | set_vl_shared(dd, i, be16_to_cpu(new_bc->vl[i].shared)); | |
7380 | } | |
7381 | ||
7382 | /* finally raise the global shared */ | |
7383 | if (be16_to_cpu(new_bc->overall_shared_limit) > | |
7384 | be16_to_cpu(cur_bc.overall_shared_limit)) | |
7385 | set_global_shared(dd, | |
7386 | be16_to_cpu(new_bc->overall_shared_limit)); | |
7387 | ||
7388 | /* bracket the credit change with a total adjustment */ | |
7389 | if (new_total < cur_total) | |
7390 | set_global_limit(dd, new_total); | |
7391 | return 0; | |
7392 | } | |
7393 | ||
7394 | /* | |
7395 | * Read the given fabric manager table. Return the size of the | |
7396 | * table (in bytes) on success, and a negative error code on | |
7397 | * failure. | |
7398 | */ | |
7399 | int fm_get_table(struct hfi1_pportdata *ppd, int which, void *t) | |
7400 | ||
7401 | { | |
7402 | int size; | |
7403 | struct vl_arb_cache *vlc; | |
7404 | ||
7405 | switch (which) { | |
7406 | case FM_TBL_VL_HIGH_ARB: | |
7407 | size = 256; | |
7408 | /* | |
7409 | * OPA specifies 128 elements (of 2 bytes each), though | |
7410 | * HFI supports only 16 elements in h/w. | |
7411 | */ | |
7412 | vlc = vl_arb_lock_cache(ppd, HI_PRIO_TABLE); | |
7413 | vl_arb_get_cache(vlc, t); | |
7414 | vl_arb_unlock_cache(ppd, HI_PRIO_TABLE); | |
7415 | break; | |
7416 | case FM_TBL_VL_LOW_ARB: | |
7417 | size = 256; | |
7418 | /* | |
7419 | * OPA specifies 128 elements (of 2 bytes each), though | |
7420 | * HFI supports only 16 elements in h/w. | |
7421 | */ | |
7422 | vlc = vl_arb_lock_cache(ppd, LO_PRIO_TABLE); | |
7423 | vl_arb_get_cache(vlc, t); | |
7424 | vl_arb_unlock_cache(ppd, LO_PRIO_TABLE); | |
7425 | break; | |
7426 | case FM_TBL_BUFFER_CONTROL: | |
7427 | size = get_buffer_control(ppd->dd, t, NULL); | |
7428 | break; | |
7429 | case FM_TBL_SC2VLNT: | |
7430 | size = get_sc2vlnt(ppd->dd, t); | |
7431 | break; | |
7432 | case FM_TBL_VL_PREEMPT_ELEMS: | |
7433 | size = 256; | |
7434 | /* OPA specifies 128 elements, of 2 bytes each */ | |
7435 | get_vlarb_preempt(ppd->dd, OPA_MAX_VLS, t); | |
7436 | break; | |
7437 | case FM_TBL_VL_PREEMPT_MATRIX: | |
7438 | size = 256; | |
7439 | /* | |
7440 | * OPA specifies that this is the same size as the VL | |
7441 | * arbitration tables (i.e., 256 bytes). | |
7442 | */ | |
7443 | break; | |
7444 | default: | |
7445 | return -EINVAL; | |
7446 | } | |
7447 | return size; | |
7448 | } | |
7449 | ||
7450 | /* | |
7451 | * Write the given fabric manager table. | |
7452 | */ | |
7453 | int fm_set_table(struct hfi1_pportdata *ppd, int which, void *t) | |
7454 | { | |
7455 | int ret = 0; | |
7456 | struct vl_arb_cache *vlc; | |
7457 | ||
7458 | switch (which) { | |
7459 | case FM_TBL_VL_HIGH_ARB: | |
7460 | vlc = vl_arb_lock_cache(ppd, HI_PRIO_TABLE); | |
7461 | if (vl_arb_match_cache(vlc, t)) { | |
7462 | vl_arb_unlock_cache(ppd, HI_PRIO_TABLE); | |
7463 | break; | |
7464 | } | |
7465 | vl_arb_set_cache(vlc, t); | |
7466 | vl_arb_unlock_cache(ppd, HI_PRIO_TABLE); | |
7467 | ret = set_vl_weights(ppd, SEND_HIGH_PRIORITY_LIST, | |
7468 | VL_ARB_HIGH_PRIO_TABLE_SIZE, t); | |
7469 | break; | |
7470 | case FM_TBL_VL_LOW_ARB: | |
7471 | vlc = vl_arb_lock_cache(ppd, LO_PRIO_TABLE); | |
7472 | if (vl_arb_match_cache(vlc, t)) { | |
7473 | vl_arb_unlock_cache(ppd, LO_PRIO_TABLE); | |
7474 | break; | |
7475 | } | |
7476 | vl_arb_set_cache(vlc, t); | |
7477 | vl_arb_unlock_cache(ppd, LO_PRIO_TABLE); | |
7478 | ret = set_vl_weights(ppd, SEND_LOW_PRIORITY_LIST, | |
7479 | VL_ARB_LOW_PRIO_TABLE_SIZE, t); | |
7480 | break; | |
7481 | case FM_TBL_BUFFER_CONTROL: | |
7482 | ret = set_buffer_control(ppd->dd, t); | |
7483 | break; | |
7484 | case FM_TBL_SC2VLNT: | |
7485 | set_sc2vlnt(ppd->dd, t); | |
7486 | break; | |
7487 | default: | |
7488 | ret = -EINVAL; | |
7489 | } | |
7490 | return ret; | |
7491 | } | |
7492 | ||
7493 | /* | |
7494 | * Disable all data VLs. | |
7495 | * | |
7496 | * Return 0 if disabled, non-zero if the VLs cannot be disabled. | |
7497 | */ | |
7498 | static int disable_data_vls(struct hfi1_devdata *dd) | |
7499 | { | |
995deafa | 7500 | if (is_ax(dd)) |
77241056 MM |
7501 | return 1; |
7502 | ||
7503 | pio_send_control(dd, PSC_DATA_VL_DISABLE); | |
7504 | ||
7505 | return 0; | |
7506 | } | |
7507 | ||
7508 | /* | |
7509 | * open_fill_data_vls() - the counterpart to stop_drain_data_vls(). | |
7510 | * Just re-enables all data VLs (the "fill" part happens | |
7511 | * automatically - the name was chosen for symmetry with | |
7512 | * stop_drain_data_vls()). | |
7513 | * | |
7514 | * Return 0 if successful, non-zero if the VLs cannot be enabled. | |
7515 | */ | |
7516 | int open_fill_data_vls(struct hfi1_devdata *dd) | |
7517 | { | |
995deafa | 7518 | if (is_ax(dd)) |
77241056 MM |
7519 | return 1; |
7520 | ||
7521 | pio_send_control(dd, PSC_DATA_VL_ENABLE); | |
7522 | ||
7523 | return 0; | |
7524 | } | |
7525 | ||
7526 | /* | |
7527 | * drain_data_vls() - assumes that disable_data_vls() has been called, | |
7528 | * wait for occupancy (of per-VL FIFOs) for all contexts, and SDMA | |
7529 | * engines to drop to 0. | |
7530 | */ | |
7531 | static void drain_data_vls(struct hfi1_devdata *dd) | |
7532 | { | |
7533 | sc_wait(dd); | |
7534 | sdma_wait(dd); | |
7535 | pause_for_credit_return(dd); | |
7536 | } | |
7537 | ||
7538 | /* | |
7539 | * stop_drain_data_vls() - disable, then drain all per-VL fifos. | |
7540 | * | |
7541 | * Use open_fill_data_vls() to resume using data VLs. This pair is | |
7542 | * meant to be used like this: | |
7543 | * | |
7544 | * stop_drain_data_vls(dd); | |
7545 | * // do things with per-VL resources | |
7546 | * open_fill_data_vls(dd); | |
7547 | */ | |
7548 | int stop_drain_data_vls(struct hfi1_devdata *dd) | |
7549 | { | |
7550 | int ret; | |
7551 | ||
7552 | ret = disable_data_vls(dd); | |
7553 | if (ret == 0) | |
7554 | drain_data_vls(dd); | |
7555 | ||
7556 | return ret; | |
7557 | } | |
7558 | ||
7559 | /* | |
7560 | * Convert a nanosecond time to a cclock count. No matter how slow | |
7561 | * the cclock, a non-zero ns will always have a non-zero result. | |
7562 | */ | |
7563 | u32 ns_to_cclock(struct hfi1_devdata *dd, u32 ns) | |
7564 | { | |
7565 | u32 cclocks; | |
7566 | ||
7567 | if (dd->icode == ICODE_FPGA_EMULATION) | |
7568 | cclocks = (ns * 1000) / FPGA_CCLOCK_PS; | |
7569 | else /* simulation pretends to be ASIC */ | |
7570 | cclocks = (ns * 1000) / ASIC_CCLOCK_PS; | |
7571 | if (ns && !cclocks) /* if ns nonzero, must be at least 1 */ | |
7572 | cclocks = 1; | |
7573 | return cclocks; | |
7574 | } | |
7575 | ||
7576 | /* | |
7577 | * Convert a cclock count to nanoseconds. Not matter how slow | |
7578 | * the cclock, a non-zero cclocks will always have a non-zero result. | |
7579 | */ | |
7580 | u32 cclock_to_ns(struct hfi1_devdata *dd, u32 cclocks) | |
7581 | { | |
7582 | u32 ns; | |
7583 | ||
7584 | if (dd->icode == ICODE_FPGA_EMULATION) | |
7585 | ns = (cclocks * FPGA_CCLOCK_PS) / 1000; | |
7586 | else /* simulation pretends to be ASIC */ | |
7587 | ns = (cclocks * ASIC_CCLOCK_PS) / 1000; | |
7588 | if (cclocks && !ns) | |
7589 | ns = 1; | |
7590 | return ns; | |
7591 | } | |
7592 | ||
7593 | /* | |
7594 | * Dynamically adjust the receive interrupt timeout for a context based on | |
7595 | * incoming packet rate. | |
7596 | * | |
7597 | * NOTE: Dynamic adjustment does not allow rcv_intr_count to be zero. | |
7598 | */ | |
7599 | static void adjust_rcv_timeout(struct hfi1_ctxtdata *rcd, u32 npkts) | |
7600 | { | |
7601 | struct hfi1_devdata *dd = rcd->dd; | |
7602 | u32 timeout = rcd->rcvavail_timeout; | |
7603 | ||
7604 | /* | |
7605 | * This algorithm doubles or halves the timeout depending on whether | |
7606 | * the number of packets received in this interrupt were less than or | |
7607 | * greater equal the interrupt count. | |
7608 | * | |
7609 | * The calculations below do not allow a steady state to be achieved. | |
7610 | * Only at the endpoints it is possible to have an unchanging | |
7611 | * timeout. | |
7612 | */ | |
7613 | if (npkts < rcv_intr_count) { | |
7614 | /* | |
7615 | * Not enough packets arrived before the timeout, adjust | |
7616 | * timeout downward. | |
7617 | */ | |
7618 | if (timeout < 2) /* already at minimum? */ | |
7619 | return; | |
7620 | timeout >>= 1; | |
7621 | } else { | |
7622 | /* | |
7623 | * More than enough packets arrived before the timeout, adjust | |
7624 | * timeout upward. | |
7625 | */ | |
7626 | if (timeout >= dd->rcv_intr_timeout_csr) /* already at max? */ | |
7627 | return; | |
7628 | timeout = min(timeout << 1, dd->rcv_intr_timeout_csr); | |
7629 | } | |
7630 | ||
7631 | rcd->rcvavail_timeout = timeout; | |
7632 | /* timeout cannot be larger than rcv_intr_timeout_csr which has already | |
7633 | been verified to be in range */ | |
7634 | write_kctxt_csr(dd, rcd->ctxt, RCV_AVAIL_TIME_OUT, | |
7635 | (u64)timeout << RCV_AVAIL_TIME_OUT_TIME_OUT_RELOAD_SHIFT); | |
7636 | } | |
7637 | ||
7638 | void update_usrhead(struct hfi1_ctxtdata *rcd, u32 hd, u32 updegr, u32 egrhd, | |
7639 | u32 intr_adjust, u32 npkts) | |
7640 | { | |
7641 | struct hfi1_devdata *dd = rcd->dd; | |
7642 | u64 reg; | |
7643 | u32 ctxt = rcd->ctxt; | |
7644 | ||
7645 | /* | |
7646 | * Need to write timeout register before updating RcvHdrHead to ensure | |
7647 | * that a new value is used when the HW decides to restart counting. | |
7648 | */ | |
7649 | if (intr_adjust) | |
7650 | adjust_rcv_timeout(rcd, npkts); | |
7651 | if (updegr) { | |
7652 | reg = (egrhd & RCV_EGR_INDEX_HEAD_HEAD_MASK) | |
7653 | << RCV_EGR_INDEX_HEAD_HEAD_SHIFT; | |
7654 | write_uctxt_csr(dd, ctxt, RCV_EGR_INDEX_HEAD, reg); | |
7655 | } | |
7656 | mmiowb(); | |
7657 | reg = ((u64)rcv_intr_count << RCV_HDR_HEAD_COUNTER_SHIFT) | | |
7658 | (((u64)hd & RCV_HDR_HEAD_HEAD_MASK) | |
7659 | << RCV_HDR_HEAD_HEAD_SHIFT); | |
7660 | write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, reg); | |
7661 | mmiowb(); | |
7662 | } | |
7663 | ||
7664 | u32 hdrqempty(struct hfi1_ctxtdata *rcd) | |
7665 | { | |
7666 | u32 head, tail; | |
7667 | ||
7668 | head = (read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) | |
7669 | & RCV_HDR_HEAD_HEAD_SMASK) >> RCV_HDR_HEAD_HEAD_SHIFT; | |
7670 | ||
7671 | if (rcd->rcvhdrtail_kvaddr) | |
7672 | tail = get_rcvhdrtail(rcd); | |
7673 | else | |
7674 | tail = read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL); | |
7675 | ||
7676 | return head == tail; | |
7677 | } | |
7678 | ||
7679 | /* | |
7680 | * Context Control and Receive Array encoding for buffer size: | |
7681 | * 0x0 invalid | |
7682 | * 0x1 4 KB | |
7683 | * 0x2 8 KB | |
7684 | * 0x3 16 KB | |
7685 | * 0x4 32 KB | |
7686 | * 0x5 64 KB | |
7687 | * 0x6 128 KB | |
7688 | * 0x7 256 KB | |
7689 | * 0x8 512 KB (Receive Array only) | |
7690 | * 0x9 1 MB (Receive Array only) | |
7691 | * 0xa 2 MB (Receive Array only) | |
7692 | * | |
7693 | * 0xB-0xF - reserved (Receive Array only) | |
7694 | * | |
7695 | * | |
7696 | * This routine assumes that the value has already been sanity checked. | |
7697 | */ | |
7698 | static u32 encoded_size(u32 size) | |
7699 | { | |
7700 | switch (size) { | |
7701 | case 4*1024: return 0x1; | |
7702 | case 8*1024: return 0x2; | |
7703 | case 16*1024: return 0x3; | |
7704 | case 32*1024: return 0x4; | |
7705 | case 64*1024: return 0x5; | |
7706 | case 128*1024: return 0x6; | |
7707 | case 256*1024: return 0x7; | |
7708 | case 512*1024: return 0x8; | |
7709 | case 1*1024*1024: return 0x9; | |
7710 | case 2*1024*1024: return 0xa; | |
7711 | } | |
7712 | return 0x1; /* if invalid, go with the minimum size */ | |
7713 | } | |
7714 | ||
7715 | void hfi1_rcvctrl(struct hfi1_devdata *dd, unsigned int op, int ctxt) | |
7716 | { | |
7717 | struct hfi1_ctxtdata *rcd; | |
7718 | u64 rcvctrl, reg; | |
7719 | int did_enable = 0; | |
7720 | ||
7721 | rcd = dd->rcd[ctxt]; | |
7722 | if (!rcd) | |
7723 | return; | |
7724 | ||
7725 | hfi1_cdbg(RCVCTRL, "ctxt %d op 0x%x", ctxt, op); | |
7726 | ||
7727 | rcvctrl = read_kctxt_csr(dd, ctxt, RCV_CTXT_CTRL); | |
7728 | /* if the context already enabled, don't do the extra steps */ | |
7729 | if ((op & HFI1_RCVCTRL_CTXT_ENB) | |
7730 | && !(rcvctrl & RCV_CTXT_CTRL_ENABLE_SMASK)) { | |
7731 | /* reset the tail and hdr addresses, and sequence count */ | |
7732 | write_kctxt_csr(dd, ctxt, RCV_HDR_ADDR, | |
7733 | rcd->rcvhdrq_phys); | |
7734 | if (HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL)) | |
7735 | write_kctxt_csr(dd, ctxt, RCV_HDR_TAIL_ADDR, | |
7736 | rcd->rcvhdrqtailaddr_phys); | |
7737 | rcd->seq_cnt = 1; | |
7738 | ||
7739 | /* reset the cached receive header queue head value */ | |
7740 | rcd->head = 0; | |
7741 | ||
7742 | /* | |
7743 | * Zero the receive header queue so we don't get false | |
7744 | * positives when checking the sequence number. The | |
7745 | * sequence numbers could land exactly on the same spot. | |
7746 | * E.g. a rcd restart before the receive header wrapped. | |
7747 | */ | |
7748 | memset(rcd->rcvhdrq, 0, rcd->rcvhdrq_size); | |
7749 | ||
7750 | /* starting timeout */ | |
7751 | rcd->rcvavail_timeout = dd->rcv_intr_timeout_csr; | |
7752 | ||
7753 | /* enable the context */ | |
7754 | rcvctrl |= RCV_CTXT_CTRL_ENABLE_SMASK; | |
7755 | ||
7756 | /* clean the egr buffer size first */ | |
7757 | rcvctrl &= ~RCV_CTXT_CTRL_EGR_BUF_SIZE_SMASK; | |
7758 | rcvctrl |= ((u64)encoded_size(rcd->egrbufs.rcvtid_size) | |
7759 | & RCV_CTXT_CTRL_EGR_BUF_SIZE_MASK) | |
7760 | << RCV_CTXT_CTRL_EGR_BUF_SIZE_SHIFT; | |
7761 | ||
7762 | /* zero RcvHdrHead - set RcvHdrHead.Counter after enable */ | |
7763 | write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, 0); | |
7764 | did_enable = 1; | |
7765 | ||
7766 | /* zero RcvEgrIndexHead */ | |
7767 | write_uctxt_csr(dd, ctxt, RCV_EGR_INDEX_HEAD, 0); | |
7768 | ||
7769 | /* set eager count and base index */ | |
7770 | reg = (((u64)(rcd->egrbufs.alloced >> RCV_SHIFT) | |
7771 | & RCV_EGR_CTRL_EGR_CNT_MASK) | |
7772 | << RCV_EGR_CTRL_EGR_CNT_SHIFT) | | |
7773 | (((rcd->eager_base >> RCV_SHIFT) | |
7774 | & RCV_EGR_CTRL_EGR_BASE_INDEX_MASK) | |
7775 | << RCV_EGR_CTRL_EGR_BASE_INDEX_SHIFT); | |
7776 | write_kctxt_csr(dd, ctxt, RCV_EGR_CTRL, reg); | |
7777 | ||
7778 | /* | |
7779 | * Set TID (expected) count and base index. | |
7780 | * rcd->expected_count is set to individual RcvArray entries, | |
7781 | * not pairs, and the CSR takes a pair-count in groups of | |
7782 | * four, so divide by 8. | |
7783 | */ | |
7784 | reg = (((rcd->expected_count >> RCV_SHIFT) | |
7785 | & RCV_TID_CTRL_TID_PAIR_CNT_MASK) | |
7786 | << RCV_TID_CTRL_TID_PAIR_CNT_SHIFT) | | |
7787 | (((rcd->expected_base >> RCV_SHIFT) | |
7788 | & RCV_TID_CTRL_TID_BASE_INDEX_MASK) | |
7789 | << RCV_TID_CTRL_TID_BASE_INDEX_SHIFT); | |
7790 | write_kctxt_csr(dd, ctxt, RCV_TID_CTRL, reg); | |
82c2611d NV |
7791 | if (ctxt == HFI1_CTRL_CTXT) |
7792 | write_csr(dd, RCV_VL15, HFI1_CTRL_CTXT); | |
77241056 MM |
7793 | } |
7794 | if (op & HFI1_RCVCTRL_CTXT_DIS) { | |
7795 | write_csr(dd, RCV_VL15, 0); | |
46b010d3 MB |
7796 | /* |
7797 | * When receive context is being disabled turn on tail | |
7798 | * update with a dummy tail address and then disable | |
7799 | * receive context. | |
7800 | */ | |
7801 | if (dd->rcvhdrtail_dummy_physaddr) { | |
7802 | write_kctxt_csr(dd, ctxt, RCV_HDR_TAIL_ADDR, | |
7803 | dd->rcvhdrtail_dummy_physaddr); | |
7804 | rcvctrl |= RCV_CTXT_CTRL_TAIL_UPD_SMASK; | |
7805 | } | |
7806 | ||
77241056 MM |
7807 | rcvctrl &= ~RCV_CTXT_CTRL_ENABLE_SMASK; |
7808 | } | |
7809 | if (op & HFI1_RCVCTRL_INTRAVAIL_ENB) | |
7810 | rcvctrl |= RCV_CTXT_CTRL_INTR_AVAIL_SMASK; | |
7811 | if (op & HFI1_RCVCTRL_INTRAVAIL_DIS) | |
7812 | rcvctrl &= ~RCV_CTXT_CTRL_INTR_AVAIL_SMASK; | |
7813 | if (op & HFI1_RCVCTRL_TAILUPD_ENB && rcd->rcvhdrqtailaddr_phys) | |
7814 | rcvctrl |= RCV_CTXT_CTRL_TAIL_UPD_SMASK; | |
7815 | if (op & HFI1_RCVCTRL_TAILUPD_DIS) | |
7816 | rcvctrl &= ~RCV_CTXT_CTRL_TAIL_UPD_SMASK; | |
7817 | if (op & HFI1_RCVCTRL_TIDFLOW_ENB) | |
7818 | rcvctrl |= RCV_CTXT_CTRL_TID_FLOW_ENABLE_SMASK; | |
7819 | if (op & HFI1_RCVCTRL_TIDFLOW_DIS) | |
7820 | rcvctrl &= ~RCV_CTXT_CTRL_TID_FLOW_ENABLE_SMASK; | |
7821 | if (op & HFI1_RCVCTRL_ONE_PKT_EGR_ENB) { | |
7822 | /* In one-packet-per-eager mode, the size comes from | |
7823 | the RcvArray entry. */ | |
7824 | rcvctrl &= ~RCV_CTXT_CTRL_EGR_BUF_SIZE_SMASK; | |
7825 | rcvctrl |= RCV_CTXT_CTRL_ONE_PACKET_PER_EGR_BUFFER_SMASK; | |
7826 | } | |
7827 | if (op & HFI1_RCVCTRL_ONE_PKT_EGR_DIS) | |
7828 | rcvctrl &= ~RCV_CTXT_CTRL_ONE_PACKET_PER_EGR_BUFFER_SMASK; | |
7829 | if (op & HFI1_RCVCTRL_NO_RHQ_DROP_ENB) | |
7830 | rcvctrl |= RCV_CTXT_CTRL_DONT_DROP_RHQ_FULL_SMASK; | |
7831 | if (op & HFI1_RCVCTRL_NO_RHQ_DROP_DIS) | |
7832 | rcvctrl &= ~RCV_CTXT_CTRL_DONT_DROP_RHQ_FULL_SMASK; | |
7833 | if (op & HFI1_RCVCTRL_NO_EGR_DROP_ENB) | |
7834 | rcvctrl |= RCV_CTXT_CTRL_DONT_DROP_EGR_FULL_SMASK; | |
7835 | if (op & HFI1_RCVCTRL_NO_EGR_DROP_DIS) | |
7836 | rcvctrl &= ~RCV_CTXT_CTRL_DONT_DROP_EGR_FULL_SMASK; | |
7837 | rcd->rcvctrl = rcvctrl; | |
7838 | hfi1_cdbg(RCVCTRL, "ctxt %d rcvctrl 0x%llx\n", ctxt, rcvctrl); | |
7839 | write_kctxt_csr(dd, ctxt, RCV_CTXT_CTRL, rcd->rcvctrl); | |
7840 | ||
7841 | /* work around sticky RcvCtxtStatus.BlockedRHQFull */ | |
7842 | if (did_enable | |
7843 | && (rcvctrl & RCV_CTXT_CTRL_DONT_DROP_RHQ_FULL_SMASK)) { | |
7844 | reg = read_kctxt_csr(dd, ctxt, RCV_CTXT_STATUS); | |
7845 | if (reg != 0) { | |
7846 | dd_dev_info(dd, "ctxt %d status %lld (blocked)\n", | |
7847 | ctxt, reg); | |
7848 | read_uctxt_csr(dd, ctxt, RCV_HDR_HEAD); | |
7849 | write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, 0x10); | |
7850 | write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, 0x00); | |
7851 | read_uctxt_csr(dd, ctxt, RCV_HDR_HEAD); | |
7852 | reg = read_kctxt_csr(dd, ctxt, RCV_CTXT_STATUS); | |
7853 | dd_dev_info(dd, "ctxt %d status %lld (%s blocked)\n", | |
7854 | ctxt, reg, reg == 0 ? "not" : "still"); | |
7855 | } | |
7856 | } | |
7857 | ||
7858 | if (did_enable) { | |
7859 | /* | |
7860 | * The interrupt timeout and count must be set after | |
7861 | * the context is enabled to take effect. | |
7862 | */ | |
7863 | /* set interrupt timeout */ | |
7864 | write_kctxt_csr(dd, ctxt, RCV_AVAIL_TIME_OUT, | |
7865 | (u64)rcd->rcvavail_timeout << | |
7866 | RCV_AVAIL_TIME_OUT_TIME_OUT_RELOAD_SHIFT); | |
7867 | ||
7868 | /* set RcvHdrHead.Counter, zero RcvHdrHead.Head (again) */ | |
7869 | reg = (u64)rcv_intr_count << RCV_HDR_HEAD_COUNTER_SHIFT; | |
7870 | write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, reg); | |
7871 | } | |
7872 | ||
7873 | if (op & (HFI1_RCVCTRL_TAILUPD_DIS | HFI1_RCVCTRL_CTXT_DIS)) | |
7874 | /* | |
7875 | * If the context has been disabled and the Tail Update has | |
46b010d3 MB |
7876 | * been cleared, set the RCV_HDR_TAIL_ADDR CSR to dummy address |
7877 | * so it doesn't contain an address that is invalid. | |
77241056 | 7878 | */ |
46b010d3 MB |
7879 | write_kctxt_csr(dd, ctxt, RCV_HDR_TAIL_ADDR, |
7880 | dd->rcvhdrtail_dummy_physaddr); | |
77241056 MM |
7881 | } |
7882 | ||
7883 | u32 hfi1_read_cntrs(struct hfi1_devdata *dd, loff_t pos, char **namep, | |
7884 | u64 **cntrp) | |
7885 | { | |
7886 | int ret; | |
7887 | u64 val = 0; | |
7888 | ||
7889 | if (namep) { | |
7890 | ret = dd->cntrnameslen; | |
7891 | if (pos != 0) { | |
7892 | dd_dev_err(dd, "read_cntrs does not support indexing"); | |
7893 | return 0; | |
7894 | } | |
7895 | *namep = dd->cntrnames; | |
7896 | } else { | |
7897 | const struct cntr_entry *entry; | |
7898 | int i, j; | |
7899 | ||
7900 | ret = (dd->ndevcntrs) * sizeof(u64); | |
7901 | if (pos != 0) { | |
7902 | dd_dev_err(dd, "read_cntrs does not support indexing"); | |
7903 | return 0; | |
7904 | } | |
7905 | ||
7906 | /* Get the start of the block of counters */ | |
7907 | *cntrp = dd->cntrs; | |
7908 | ||
7909 | /* | |
7910 | * Now go and fill in each counter in the block. | |
7911 | */ | |
7912 | for (i = 0; i < DEV_CNTR_LAST; i++) { | |
7913 | entry = &dev_cntrs[i]; | |
7914 | hfi1_cdbg(CNTR, "reading %s", entry->name); | |
7915 | if (entry->flags & CNTR_DISABLED) { | |
7916 | /* Nothing */ | |
7917 | hfi1_cdbg(CNTR, "\tDisabled\n"); | |
7918 | } else { | |
7919 | if (entry->flags & CNTR_VL) { | |
7920 | hfi1_cdbg(CNTR, "\tPer VL\n"); | |
7921 | for (j = 0; j < C_VL_COUNT; j++) { | |
7922 | val = entry->rw_cntr(entry, | |
7923 | dd, j, | |
7924 | CNTR_MODE_R, | |
7925 | 0); | |
7926 | hfi1_cdbg( | |
7927 | CNTR, | |
7928 | "\t\tRead 0x%llx for %d\n", | |
7929 | val, j); | |
7930 | dd->cntrs[entry->offset + j] = | |
7931 | val; | |
7932 | } | |
7933 | } else { | |
7934 | val = entry->rw_cntr(entry, dd, | |
7935 | CNTR_INVALID_VL, | |
7936 | CNTR_MODE_R, 0); | |
7937 | dd->cntrs[entry->offset] = val; | |
7938 | hfi1_cdbg(CNTR, "\tRead 0x%llx", val); | |
7939 | } | |
7940 | } | |
7941 | } | |
7942 | } | |
7943 | return ret; | |
7944 | } | |
7945 | ||
7946 | /* | |
7947 | * Used by sysfs to create files for hfi stats to read | |
7948 | */ | |
7949 | u32 hfi1_read_portcntrs(struct hfi1_devdata *dd, loff_t pos, u32 port, | |
7950 | char **namep, u64 **cntrp) | |
7951 | { | |
7952 | int ret; | |
7953 | u64 val = 0; | |
7954 | ||
7955 | if (namep) { | |
7956 | ret = dd->portcntrnameslen; | |
7957 | if (pos != 0) { | |
7958 | dd_dev_err(dd, "index not supported"); | |
7959 | return 0; | |
7960 | } | |
7961 | *namep = dd->portcntrnames; | |
7962 | } else { | |
7963 | const struct cntr_entry *entry; | |
7964 | struct hfi1_pportdata *ppd; | |
7965 | int i, j; | |
7966 | ||
7967 | ret = (dd->nportcntrs) * sizeof(u64); | |
7968 | if (pos != 0) { | |
7969 | dd_dev_err(dd, "indexing not supported"); | |
7970 | return 0; | |
7971 | } | |
7972 | ppd = (struct hfi1_pportdata *)(dd + 1 + port); | |
7973 | *cntrp = ppd->cntrs; | |
7974 | ||
7975 | for (i = 0; i < PORT_CNTR_LAST; i++) { | |
7976 | entry = &port_cntrs[i]; | |
7977 | hfi1_cdbg(CNTR, "reading %s", entry->name); | |
7978 | if (entry->flags & CNTR_DISABLED) { | |
7979 | /* Nothing */ | |
7980 | hfi1_cdbg(CNTR, "\tDisabled\n"); | |
7981 | continue; | |
7982 | } | |
7983 | ||
7984 | if (entry->flags & CNTR_VL) { | |
7985 | hfi1_cdbg(CNTR, "\tPer VL"); | |
7986 | for (j = 0; j < C_VL_COUNT; j++) { | |
7987 | val = entry->rw_cntr(entry, ppd, j, | |
7988 | CNTR_MODE_R, | |
7989 | 0); | |
7990 | hfi1_cdbg( | |
7991 | CNTR, | |
7992 | "\t\tRead 0x%llx for %d", | |
7993 | val, j); | |
7994 | ppd->cntrs[entry->offset + j] = val; | |
7995 | } | |
7996 | } else { | |
7997 | val = entry->rw_cntr(entry, ppd, | |
7998 | CNTR_INVALID_VL, | |
7999 | CNTR_MODE_R, | |
8000 | 0); | |
8001 | ppd->cntrs[entry->offset] = val; | |
8002 | hfi1_cdbg(CNTR, "\tRead 0x%llx", val); | |
8003 | } | |
8004 | } | |
8005 | } | |
8006 | return ret; | |
8007 | } | |
8008 | ||
8009 | static void free_cntrs(struct hfi1_devdata *dd) | |
8010 | { | |
8011 | struct hfi1_pportdata *ppd; | |
8012 | int i; | |
8013 | ||
8014 | if (dd->synth_stats_timer.data) | |
8015 | del_timer_sync(&dd->synth_stats_timer); | |
8016 | dd->synth_stats_timer.data = 0; | |
8017 | ppd = (struct hfi1_pportdata *)(dd + 1); | |
8018 | for (i = 0; i < dd->num_pports; i++, ppd++) { | |
8019 | kfree(ppd->cntrs); | |
8020 | kfree(ppd->scntrs); | |
8021 | free_percpu(ppd->ibport_data.rc_acks); | |
8022 | free_percpu(ppd->ibport_data.rc_qacks); | |
8023 | free_percpu(ppd->ibport_data.rc_delayed_comp); | |
8024 | ppd->cntrs = NULL; | |
8025 | ppd->scntrs = NULL; | |
8026 | ppd->ibport_data.rc_acks = NULL; | |
8027 | ppd->ibport_data.rc_qacks = NULL; | |
8028 | ppd->ibport_data.rc_delayed_comp = NULL; | |
8029 | } | |
8030 | kfree(dd->portcntrnames); | |
8031 | dd->portcntrnames = NULL; | |
8032 | kfree(dd->cntrs); | |
8033 | dd->cntrs = NULL; | |
8034 | kfree(dd->scntrs); | |
8035 | dd->scntrs = NULL; | |
8036 | kfree(dd->cntrnames); | |
8037 | dd->cntrnames = NULL; | |
8038 | } | |
8039 | ||
8040 | #define CNTR_MAX 0xFFFFFFFFFFFFFFFFULL | |
8041 | #define CNTR_32BIT_MAX 0x00000000FFFFFFFF | |
8042 | ||
8043 | static u64 read_dev_port_cntr(struct hfi1_devdata *dd, struct cntr_entry *entry, | |
8044 | u64 *psval, void *context, int vl) | |
8045 | { | |
8046 | u64 val; | |
8047 | u64 sval = *psval; | |
8048 | ||
8049 | if (entry->flags & CNTR_DISABLED) { | |
8050 | dd_dev_err(dd, "Counter %s not enabled", entry->name); | |
8051 | return 0; | |
8052 | } | |
8053 | ||
8054 | hfi1_cdbg(CNTR, "cntr: %s vl %d psval 0x%llx", entry->name, vl, *psval); | |
8055 | ||
8056 | val = entry->rw_cntr(entry, context, vl, CNTR_MODE_R, 0); | |
8057 | ||
8058 | /* If its a synthetic counter there is more work we need to do */ | |
8059 | if (entry->flags & CNTR_SYNTH) { | |
8060 | if (sval == CNTR_MAX) { | |
8061 | /* No need to read already saturated */ | |
8062 | return CNTR_MAX; | |
8063 | } | |
8064 | ||
8065 | if (entry->flags & CNTR_32BIT) { | |
8066 | /* 32bit counters can wrap multiple times */ | |
8067 | u64 upper = sval >> 32; | |
8068 | u64 lower = (sval << 32) >> 32; | |
8069 | ||
8070 | if (lower > val) { /* hw wrapped */ | |
8071 | if (upper == CNTR_32BIT_MAX) | |
8072 | val = CNTR_MAX; | |
8073 | else | |
8074 | upper++; | |
8075 | } | |
8076 | ||
8077 | if (val != CNTR_MAX) | |
8078 | val = (upper << 32) | val; | |
8079 | ||
8080 | } else { | |
8081 | /* If we rolled we are saturated */ | |
8082 | if ((val < sval) || (val > CNTR_MAX)) | |
8083 | val = CNTR_MAX; | |
8084 | } | |
8085 | } | |
8086 | ||
8087 | *psval = val; | |
8088 | ||
8089 | hfi1_cdbg(CNTR, "\tNew val=0x%llx", val); | |
8090 | ||
8091 | return val; | |
8092 | } | |
8093 | ||
8094 | static u64 write_dev_port_cntr(struct hfi1_devdata *dd, | |
8095 | struct cntr_entry *entry, | |
8096 | u64 *psval, void *context, int vl, u64 data) | |
8097 | { | |
8098 | u64 val; | |
8099 | ||
8100 | if (entry->flags & CNTR_DISABLED) { | |
8101 | dd_dev_err(dd, "Counter %s not enabled", entry->name); | |
8102 | return 0; | |
8103 | } | |
8104 | ||
8105 | hfi1_cdbg(CNTR, "cntr: %s vl %d psval 0x%llx", entry->name, vl, *psval); | |
8106 | ||
8107 | if (entry->flags & CNTR_SYNTH) { | |
8108 | *psval = data; | |
8109 | if (entry->flags & CNTR_32BIT) { | |
8110 | val = entry->rw_cntr(entry, context, vl, CNTR_MODE_W, | |
8111 | (data << 32) >> 32); | |
8112 | val = data; /* return the full 64bit value */ | |
8113 | } else { | |
8114 | val = entry->rw_cntr(entry, context, vl, CNTR_MODE_W, | |
8115 | data); | |
8116 | } | |
8117 | } else { | |
8118 | val = entry->rw_cntr(entry, context, vl, CNTR_MODE_W, data); | |
8119 | } | |
8120 | ||
8121 | *psval = val; | |
8122 | ||
8123 | hfi1_cdbg(CNTR, "\tNew val=0x%llx", val); | |
8124 | ||
8125 | return val; | |
8126 | } | |
8127 | ||
8128 | u64 read_dev_cntr(struct hfi1_devdata *dd, int index, int vl) | |
8129 | { | |
8130 | struct cntr_entry *entry; | |
8131 | u64 *sval; | |
8132 | ||
8133 | entry = &dev_cntrs[index]; | |
8134 | sval = dd->scntrs + entry->offset; | |
8135 | ||
8136 | if (vl != CNTR_INVALID_VL) | |
8137 | sval += vl; | |
8138 | ||
8139 | return read_dev_port_cntr(dd, entry, sval, dd, vl); | |
8140 | } | |
8141 | ||
8142 | u64 write_dev_cntr(struct hfi1_devdata *dd, int index, int vl, u64 data) | |
8143 | { | |
8144 | struct cntr_entry *entry; | |
8145 | u64 *sval; | |
8146 | ||
8147 | entry = &dev_cntrs[index]; | |
8148 | sval = dd->scntrs + entry->offset; | |
8149 | ||
8150 | if (vl != CNTR_INVALID_VL) | |
8151 | sval += vl; | |
8152 | ||
8153 | return write_dev_port_cntr(dd, entry, sval, dd, vl, data); | |
8154 | } | |
8155 | ||
8156 | u64 read_port_cntr(struct hfi1_pportdata *ppd, int index, int vl) | |
8157 | { | |
8158 | struct cntr_entry *entry; | |
8159 | u64 *sval; | |
8160 | ||
8161 | entry = &port_cntrs[index]; | |
8162 | sval = ppd->scntrs + entry->offset; | |
8163 | ||
8164 | if (vl != CNTR_INVALID_VL) | |
8165 | sval += vl; | |
8166 | ||
8167 | if ((index >= C_RCV_HDR_OVF_FIRST + ppd->dd->num_rcv_contexts) && | |
8168 | (index <= C_RCV_HDR_OVF_LAST)) { | |
8169 | /* We do not want to bother for disabled contexts */ | |
8170 | return 0; | |
8171 | } | |
8172 | ||
8173 | return read_dev_port_cntr(ppd->dd, entry, sval, ppd, vl); | |
8174 | } | |
8175 | ||
8176 | u64 write_port_cntr(struct hfi1_pportdata *ppd, int index, int vl, u64 data) | |
8177 | { | |
8178 | struct cntr_entry *entry; | |
8179 | u64 *sval; | |
8180 | ||
8181 | entry = &port_cntrs[index]; | |
8182 | sval = ppd->scntrs + entry->offset; | |
8183 | ||
8184 | if (vl != CNTR_INVALID_VL) | |
8185 | sval += vl; | |
8186 | ||
8187 | if ((index >= C_RCV_HDR_OVF_FIRST + ppd->dd->num_rcv_contexts) && | |
8188 | (index <= C_RCV_HDR_OVF_LAST)) { | |
8189 | /* We do not want to bother for disabled contexts */ | |
8190 | return 0; | |
8191 | } | |
8192 | ||
8193 | return write_dev_port_cntr(ppd->dd, entry, sval, ppd, vl, data); | |
8194 | } | |
8195 | ||
8196 | static void update_synth_timer(unsigned long opaque) | |
8197 | { | |
8198 | u64 cur_tx; | |
8199 | u64 cur_rx; | |
8200 | u64 total_flits; | |
8201 | u8 update = 0; | |
8202 | int i, j, vl; | |
8203 | struct hfi1_pportdata *ppd; | |
8204 | struct cntr_entry *entry; | |
8205 | ||
8206 | struct hfi1_devdata *dd = (struct hfi1_devdata *)opaque; | |
8207 | ||
8208 | /* | |
8209 | * Rather than keep beating on the CSRs pick a minimal set that we can | |
8210 | * check to watch for potential roll over. We can do this by looking at | |
8211 | * the number of flits sent/recv. If the total flits exceeds 32bits then | |
8212 | * we have to iterate all the counters and update. | |
8213 | */ | |
8214 | entry = &dev_cntrs[C_DC_RCV_FLITS]; | |
8215 | cur_rx = entry->rw_cntr(entry, dd, CNTR_INVALID_VL, CNTR_MODE_R, 0); | |
8216 | ||
8217 | entry = &dev_cntrs[C_DC_XMIT_FLITS]; | |
8218 | cur_tx = entry->rw_cntr(entry, dd, CNTR_INVALID_VL, CNTR_MODE_R, 0); | |
8219 | ||
8220 | hfi1_cdbg( | |
8221 | CNTR, | |
8222 | "[%d] curr tx=0x%llx rx=0x%llx :: last tx=0x%llx rx=0x%llx\n", | |
8223 | dd->unit, cur_tx, cur_rx, dd->last_tx, dd->last_rx); | |
8224 | ||
8225 | if ((cur_tx < dd->last_tx) || (cur_rx < dd->last_rx)) { | |
8226 | /* | |
8227 | * May not be strictly necessary to update but it won't hurt and | |
8228 | * simplifies the logic here. | |
8229 | */ | |
8230 | update = 1; | |
8231 | hfi1_cdbg(CNTR, "[%d] Tripwire counter rolled, updating", | |
8232 | dd->unit); | |
8233 | } else { | |
8234 | total_flits = (cur_tx - dd->last_tx) + (cur_rx - dd->last_rx); | |
8235 | hfi1_cdbg(CNTR, | |
8236 | "[%d] total flits 0x%llx limit 0x%llx\n", dd->unit, | |
8237 | total_flits, (u64)CNTR_32BIT_MAX); | |
8238 | if (total_flits >= CNTR_32BIT_MAX) { | |
8239 | hfi1_cdbg(CNTR, "[%d] 32bit limit hit, updating", | |
8240 | dd->unit); | |
8241 | update = 1; | |
8242 | } | |
8243 | } | |
8244 | ||
8245 | if (update) { | |
8246 | hfi1_cdbg(CNTR, "[%d] Updating dd and ppd counters", dd->unit); | |
8247 | for (i = 0; i < DEV_CNTR_LAST; i++) { | |
8248 | entry = &dev_cntrs[i]; | |
8249 | if (entry->flags & CNTR_VL) { | |
8250 | for (vl = 0; vl < C_VL_COUNT; vl++) | |
8251 | read_dev_cntr(dd, i, vl); | |
8252 | } else { | |
8253 | read_dev_cntr(dd, i, CNTR_INVALID_VL); | |
8254 | } | |
8255 | } | |
8256 | ppd = (struct hfi1_pportdata *)(dd + 1); | |
8257 | for (i = 0; i < dd->num_pports; i++, ppd++) { | |
8258 | for (j = 0; j < PORT_CNTR_LAST; j++) { | |
8259 | entry = &port_cntrs[j]; | |
8260 | if (entry->flags & CNTR_VL) { | |
8261 | for (vl = 0; vl < C_VL_COUNT; vl++) | |
8262 | read_port_cntr(ppd, j, vl); | |
8263 | } else { | |
8264 | read_port_cntr(ppd, j, CNTR_INVALID_VL); | |
8265 | } | |
8266 | } | |
8267 | } | |
8268 | ||
8269 | /* | |
8270 | * We want the value in the register. The goal is to keep track | |
8271 | * of the number of "ticks" not the counter value. In other | |
8272 | * words if the register rolls we want to notice it and go ahead | |
8273 | * and force an update. | |
8274 | */ | |
8275 | entry = &dev_cntrs[C_DC_XMIT_FLITS]; | |
8276 | dd->last_tx = entry->rw_cntr(entry, dd, CNTR_INVALID_VL, | |
8277 | CNTR_MODE_R, 0); | |
8278 | ||
8279 | entry = &dev_cntrs[C_DC_RCV_FLITS]; | |
8280 | dd->last_rx = entry->rw_cntr(entry, dd, CNTR_INVALID_VL, | |
8281 | CNTR_MODE_R, 0); | |
8282 | ||
8283 | hfi1_cdbg(CNTR, "[%d] setting last tx/rx to 0x%llx 0x%llx", | |
8284 | dd->unit, dd->last_tx, dd->last_rx); | |
8285 | ||
8286 | } else { | |
8287 | hfi1_cdbg(CNTR, "[%d] No update necessary", dd->unit); | |
8288 | } | |
8289 | ||
8290 | mod_timer(&dd->synth_stats_timer, jiffies + HZ * SYNTH_CNT_TIME); | |
8291 | } | |
8292 | ||
8293 | #define C_MAX_NAME 13 /* 12 chars + one for /0 */ | |
8294 | static int init_cntrs(struct hfi1_devdata *dd) | |
8295 | { | |
8296 | int i, rcv_ctxts, index, j; | |
8297 | size_t sz; | |
8298 | char *p; | |
8299 | char name[C_MAX_NAME]; | |
8300 | struct hfi1_pportdata *ppd; | |
8301 | ||
8302 | /* set up the stats timer; the add_timer is done at the end */ | |
24523a94 MFW |
8303 | setup_timer(&dd->synth_stats_timer, update_synth_timer, |
8304 | (unsigned long)dd); | |
77241056 MM |
8305 | |
8306 | /***********************/ | |
8307 | /* per device counters */ | |
8308 | /***********************/ | |
8309 | ||
8310 | /* size names and determine how many we have*/ | |
8311 | dd->ndevcntrs = 0; | |
8312 | sz = 0; | |
8313 | index = 0; | |
8314 | ||
8315 | for (i = 0; i < DEV_CNTR_LAST; i++) { | |
8316 | hfi1_dbg_early("Init cntr %s\n", dev_cntrs[i].name); | |
8317 | if (dev_cntrs[i].flags & CNTR_DISABLED) { | |
8318 | hfi1_dbg_early("\tSkipping %s\n", dev_cntrs[i].name); | |
8319 | continue; | |
8320 | } | |
8321 | ||
8322 | if (dev_cntrs[i].flags & CNTR_VL) { | |
8323 | hfi1_dbg_early("\tProcessing VL cntr\n"); | |
8324 | dev_cntrs[i].offset = index; | |
8325 | for (j = 0; j < C_VL_COUNT; j++) { | |
8326 | memset(name, '\0', C_MAX_NAME); | |
8327 | snprintf(name, C_MAX_NAME, "%s%d", | |
8328 | dev_cntrs[i].name, | |
8329 | vl_from_idx(j)); | |
8330 | sz += strlen(name); | |
8331 | sz++; | |
8332 | hfi1_dbg_early("\t\t%s\n", name); | |
8333 | dd->ndevcntrs++; | |
8334 | index++; | |
8335 | } | |
8336 | } else { | |
8337 | /* +1 for newline */ | |
8338 | sz += strlen(dev_cntrs[i].name) + 1; | |
8339 | dd->ndevcntrs++; | |
8340 | dev_cntrs[i].offset = index; | |
8341 | index++; | |
8342 | hfi1_dbg_early("\tAdding %s\n", dev_cntrs[i].name); | |
8343 | } | |
8344 | } | |
8345 | ||
8346 | /* allocate space for the counter values */ | |
8347 | dd->cntrs = kcalloc(index, sizeof(u64), GFP_KERNEL); | |
8348 | if (!dd->cntrs) | |
8349 | goto bail; | |
8350 | ||
8351 | dd->scntrs = kcalloc(index, sizeof(u64), GFP_KERNEL); | |
8352 | if (!dd->scntrs) | |
8353 | goto bail; | |
8354 | ||
8355 | ||
8356 | /* allocate space for the counter names */ | |
8357 | dd->cntrnameslen = sz; | |
8358 | dd->cntrnames = kmalloc(sz, GFP_KERNEL); | |
8359 | if (!dd->cntrnames) | |
8360 | goto bail; | |
8361 | ||
8362 | /* fill in the names */ | |
8363 | for (p = dd->cntrnames, i = 0, index = 0; i < DEV_CNTR_LAST; i++) { | |
8364 | if (dev_cntrs[i].flags & CNTR_DISABLED) { | |
8365 | /* Nothing */ | |
8366 | } else { | |
8367 | if (dev_cntrs[i].flags & CNTR_VL) { | |
8368 | for (j = 0; j < C_VL_COUNT; j++) { | |
8369 | memset(name, '\0', C_MAX_NAME); | |
8370 | snprintf(name, C_MAX_NAME, "%s%d", | |
8371 | dev_cntrs[i].name, | |
8372 | vl_from_idx(j)); | |
8373 | memcpy(p, name, strlen(name)); | |
8374 | p += strlen(name); | |
8375 | *p++ = '\n'; | |
8376 | } | |
8377 | } else { | |
8378 | memcpy(p, dev_cntrs[i].name, | |
8379 | strlen(dev_cntrs[i].name)); | |
8380 | p += strlen(dev_cntrs[i].name); | |
8381 | *p++ = '\n'; | |
8382 | } | |
8383 | index++; | |
8384 | } | |
8385 | } | |
8386 | ||
8387 | /*********************/ | |
8388 | /* per port counters */ | |
8389 | /*********************/ | |
8390 | ||
8391 | /* | |
8392 | * Go through the counters for the overflows and disable the ones we | |
8393 | * don't need. This varies based on platform so we need to do it | |
8394 | * dynamically here. | |
8395 | */ | |
8396 | rcv_ctxts = dd->num_rcv_contexts; | |
8397 | for (i = C_RCV_HDR_OVF_FIRST + rcv_ctxts; | |
8398 | i <= C_RCV_HDR_OVF_LAST; i++) { | |
8399 | port_cntrs[i].flags |= CNTR_DISABLED; | |
8400 | } | |
8401 | ||
8402 | /* size port counter names and determine how many we have*/ | |
8403 | sz = 0; | |
8404 | dd->nportcntrs = 0; | |
8405 | for (i = 0; i < PORT_CNTR_LAST; i++) { | |
8406 | hfi1_dbg_early("Init pcntr %s\n", port_cntrs[i].name); | |
8407 | if (port_cntrs[i].flags & CNTR_DISABLED) { | |
8408 | hfi1_dbg_early("\tSkipping %s\n", port_cntrs[i].name); | |
8409 | continue; | |
8410 | } | |
8411 | ||
8412 | if (port_cntrs[i].flags & CNTR_VL) { | |
8413 | hfi1_dbg_early("\tProcessing VL cntr\n"); | |
8414 | port_cntrs[i].offset = dd->nportcntrs; | |
8415 | for (j = 0; j < C_VL_COUNT; j++) { | |
8416 | memset(name, '\0', C_MAX_NAME); | |
8417 | snprintf(name, C_MAX_NAME, "%s%d", | |
8418 | port_cntrs[i].name, | |
8419 | vl_from_idx(j)); | |
8420 | sz += strlen(name); | |
8421 | sz++; | |
8422 | hfi1_dbg_early("\t\t%s\n", name); | |
8423 | dd->nportcntrs++; | |
8424 | } | |
8425 | } else { | |
8426 | /* +1 for newline */ | |
8427 | sz += strlen(port_cntrs[i].name) + 1; | |
8428 | port_cntrs[i].offset = dd->nportcntrs; | |
8429 | dd->nportcntrs++; | |
8430 | hfi1_dbg_early("\tAdding %s\n", port_cntrs[i].name); | |
8431 | } | |
8432 | } | |
8433 | ||
8434 | /* allocate space for the counter names */ | |
8435 | dd->portcntrnameslen = sz; | |
8436 | dd->portcntrnames = kmalloc(sz, GFP_KERNEL); | |
8437 | if (!dd->portcntrnames) | |
8438 | goto bail; | |
8439 | ||
8440 | /* fill in port cntr names */ | |
8441 | for (p = dd->portcntrnames, i = 0; i < PORT_CNTR_LAST; i++) { | |
8442 | if (port_cntrs[i].flags & CNTR_DISABLED) | |
8443 | continue; | |
8444 | ||
8445 | if (port_cntrs[i].flags & CNTR_VL) { | |
8446 | for (j = 0; j < C_VL_COUNT; j++) { | |
8447 | memset(name, '\0', C_MAX_NAME); | |
8448 | snprintf(name, C_MAX_NAME, "%s%d", | |
8449 | port_cntrs[i].name, | |
8450 | vl_from_idx(j)); | |
8451 | memcpy(p, name, strlen(name)); | |
8452 | p += strlen(name); | |
8453 | *p++ = '\n'; | |
8454 | } | |
8455 | } else { | |
8456 | memcpy(p, port_cntrs[i].name, | |
8457 | strlen(port_cntrs[i].name)); | |
8458 | p += strlen(port_cntrs[i].name); | |
8459 | *p++ = '\n'; | |
8460 | } | |
8461 | } | |
8462 | ||
8463 | /* allocate per port storage for counter values */ | |
8464 | ppd = (struct hfi1_pportdata *)(dd + 1); | |
8465 | for (i = 0; i < dd->num_pports; i++, ppd++) { | |
8466 | ppd->cntrs = kcalloc(dd->nportcntrs, sizeof(u64), GFP_KERNEL); | |
8467 | if (!ppd->cntrs) | |
8468 | goto bail; | |
8469 | ||
8470 | ppd->scntrs = kcalloc(dd->nportcntrs, sizeof(u64), GFP_KERNEL); | |
8471 | if (!ppd->scntrs) | |
8472 | goto bail; | |
8473 | } | |
8474 | ||
8475 | /* CPU counters need to be allocated and zeroed */ | |
8476 | if (init_cpu_counters(dd)) | |
8477 | goto bail; | |
8478 | ||
8479 | mod_timer(&dd->synth_stats_timer, jiffies + HZ * SYNTH_CNT_TIME); | |
8480 | return 0; | |
8481 | bail: | |
8482 | free_cntrs(dd); | |
8483 | return -ENOMEM; | |
8484 | } | |
8485 | ||
8486 | ||
8487 | static u32 chip_to_opa_lstate(struct hfi1_devdata *dd, u32 chip_lstate) | |
8488 | { | |
8489 | switch (chip_lstate) { | |
8490 | default: | |
8491 | dd_dev_err(dd, | |
8492 | "Unknown logical state 0x%x, reporting IB_PORT_DOWN\n", | |
8493 | chip_lstate); | |
8494 | /* fall through */ | |
8495 | case LSTATE_DOWN: | |
8496 | return IB_PORT_DOWN; | |
8497 | case LSTATE_INIT: | |
8498 | return IB_PORT_INIT; | |
8499 | case LSTATE_ARMED: | |
8500 | return IB_PORT_ARMED; | |
8501 | case LSTATE_ACTIVE: | |
8502 | return IB_PORT_ACTIVE; | |
8503 | } | |
8504 | } | |
8505 | ||
8506 | u32 chip_to_opa_pstate(struct hfi1_devdata *dd, u32 chip_pstate) | |
8507 | { | |
8508 | /* look at the HFI meta-states only */ | |
8509 | switch (chip_pstate & 0xf0) { | |
8510 | default: | |
8511 | dd_dev_err(dd, "Unexpected chip physical state of 0x%x\n", | |
8512 | chip_pstate); | |
8513 | /* fall through */ | |
8514 | case PLS_DISABLED: | |
8515 | return IB_PORTPHYSSTATE_DISABLED; | |
8516 | case PLS_OFFLINE: | |
8517 | return OPA_PORTPHYSSTATE_OFFLINE; | |
8518 | case PLS_POLLING: | |
8519 | return IB_PORTPHYSSTATE_POLLING; | |
8520 | case PLS_CONFIGPHY: | |
8521 | return IB_PORTPHYSSTATE_TRAINING; | |
8522 | case PLS_LINKUP: | |
8523 | return IB_PORTPHYSSTATE_LINKUP; | |
8524 | case PLS_PHYTEST: | |
8525 | return IB_PORTPHYSSTATE_PHY_TEST; | |
8526 | } | |
8527 | } | |
8528 | ||
8529 | /* return the OPA port logical state name */ | |
8530 | const char *opa_lstate_name(u32 lstate) | |
8531 | { | |
8532 | static const char * const port_logical_names[] = { | |
8533 | "PORT_NOP", | |
8534 | "PORT_DOWN", | |
8535 | "PORT_INIT", | |
8536 | "PORT_ARMED", | |
8537 | "PORT_ACTIVE", | |
8538 | "PORT_ACTIVE_DEFER", | |
8539 | }; | |
8540 | if (lstate < ARRAY_SIZE(port_logical_names)) | |
8541 | return port_logical_names[lstate]; | |
8542 | return "unknown"; | |
8543 | } | |
8544 | ||
8545 | /* return the OPA port physical state name */ | |
8546 | const char *opa_pstate_name(u32 pstate) | |
8547 | { | |
8548 | static const char * const port_physical_names[] = { | |
8549 | "PHYS_NOP", | |
8550 | "reserved1", | |
8551 | "PHYS_POLL", | |
8552 | "PHYS_DISABLED", | |
8553 | "PHYS_TRAINING", | |
8554 | "PHYS_LINKUP", | |
8555 | "PHYS_LINK_ERR_RECOVER", | |
8556 | "PHYS_PHY_TEST", | |
8557 | "reserved8", | |
8558 | "PHYS_OFFLINE", | |
8559 | "PHYS_GANGED", | |
8560 | "PHYS_TEST", | |
8561 | }; | |
8562 | if (pstate < ARRAY_SIZE(port_physical_names)) | |
8563 | return port_physical_names[pstate]; | |
8564 | return "unknown"; | |
8565 | } | |
8566 | ||
8567 | /* | |
8568 | * Read the hardware link state and set the driver's cached value of it. | |
8569 | * Return the (new) current value. | |
8570 | */ | |
8571 | u32 get_logical_state(struct hfi1_pportdata *ppd) | |
8572 | { | |
8573 | u32 new_state; | |
8574 | ||
8575 | new_state = chip_to_opa_lstate(ppd->dd, read_logical_state(ppd->dd)); | |
8576 | if (new_state != ppd->lstate) { | |
8577 | dd_dev_info(ppd->dd, "logical state changed to %s (0x%x)\n", | |
8578 | opa_lstate_name(new_state), new_state); | |
8579 | ppd->lstate = new_state; | |
8580 | } | |
8581 | /* | |
8582 | * Set port status flags in the page mapped into userspace | |
8583 | * memory. Do it here to ensure a reliable state - this is | |
8584 | * the only function called by all state handling code. | |
8585 | * Always set the flags due to the fact that the cache value | |
8586 | * might have been changed explicitly outside of this | |
8587 | * function. | |
8588 | */ | |
8589 | if (ppd->statusp) { | |
8590 | switch (ppd->lstate) { | |
8591 | case IB_PORT_DOWN: | |
8592 | case IB_PORT_INIT: | |
8593 | *ppd->statusp &= ~(HFI1_STATUS_IB_CONF | | |
8594 | HFI1_STATUS_IB_READY); | |
8595 | break; | |
8596 | case IB_PORT_ARMED: | |
8597 | *ppd->statusp |= HFI1_STATUS_IB_CONF; | |
8598 | break; | |
8599 | case IB_PORT_ACTIVE: | |
8600 | *ppd->statusp |= HFI1_STATUS_IB_READY; | |
8601 | break; | |
8602 | } | |
8603 | } | |
8604 | return ppd->lstate; | |
8605 | } | |
8606 | ||
8607 | /** | |
8608 | * wait_logical_linkstate - wait for an IB link state change to occur | |
8609 | * @ppd: port device | |
8610 | * @state: the state to wait for | |
8611 | * @msecs: the number of milliseconds to wait | |
8612 | * | |
8613 | * Wait up to msecs milliseconds for IB link state change to occur. | |
8614 | * For now, take the easy polling route. | |
8615 | * Returns 0 if state reached, otherwise -ETIMEDOUT. | |
8616 | */ | |
8617 | static int wait_logical_linkstate(struct hfi1_pportdata *ppd, u32 state, | |
8618 | int msecs) | |
8619 | { | |
8620 | unsigned long timeout; | |
8621 | ||
8622 | timeout = jiffies + msecs_to_jiffies(msecs); | |
8623 | while (1) { | |
8624 | if (get_logical_state(ppd) == state) | |
8625 | return 0; | |
8626 | if (time_after(jiffies, timeout)) | |
8627 | break; | |
8628 | msleep(20); | |
8629 | } | |
8630 | dd_dev_err(ppd->dd, "timeout waiting for link state 0x%x\n", state); | |
8631 | ||
8632 | return -ETIMEDOUT; | |
8633 | } | |
8634 | ||
8635 | u8 hfi1_ibphys_portstate(struct hfi1_pportdata *ppd) | |
8636 | { | |
8637 | static u32 remembered_state = 0xff; | |
8638 | u32 pstate; | |
8639 | u32 ib_pstate; | |
8640 | ||
8641 | pstate = read_physical_state(ppd->dd); | |
8642 | ib_pstate = chip_to_opa_pstate(ppd->dd, pstate); | |
8643 | if (remembered_state != ib_pstate) { | |
8644 | dd_dev_info(ppd->dd, | |
8645 | "%s: physical state changed to %s (0x%x), phy 0x%x\n", | |
8646 | __func__, opa_pstate_name(ib_pstate), ib_pstate, | |
8647 | pstate); | |
8648 | remembered_state = ib_pstate; | |
8649 | } | |
8650 | return ib_pstate; | |
8651 | } | |
8652 | ||
8653 | /* | |
8654 | * Read/modify/write ASIC_QSFP register bits as selected by mask | |
8655 | * data: 0 or 1 in the positions depending on what needs to be written | |
8656 | * dir: 0 for read, 1 for write | |
8657 | * mask: select by setting | |
8658 | * I2CCLK (bit 0) | |
8659 | * I2CDATA (bit 1) | |
8660 | */ | |
8661 | u64 hfi1_gpio_mod(struct hfi1_devdata *dd, u32 target, u32 data, u32 dir, | |
8662 | u32 mask) | |
8663 | { | |
8664 | u64 qsfp_oe, target_oe; | |
8665 | ||
8666 | target_oe = target ? ASIC_QSFP2_OE : ASIC_QSFP1_OE; | |
8667 | if (mask) { | |
8668 | /* We are writing register bits, so lock access */ | |
8669 | dir &= mask; | |
8670 | data &= mask; | |
8671 | ||
8672 | qsfp_oe = read_csr(dd, target_oe); | |
8673 | qsfp_oe = (qsfp_oe & ~(u64)mask) | (u64)dir; | |
8674 | write_csr(dd, target_oe, qsfp_oe); | |
8675 | } | |
8676 | /* We are exclusively reading bits here, but it is unlikely | |
8677 | * we'll get valid data when we set the direction of the pin | |
8678 | * in the same call, so read should call this function again | |
8679 | * to get valid data | |
8680 | */ | |
8681 | return read_csr(dd, target ? ASIC_QSFP2_IN : ASIC_QSFP1_IN); | |
8682 | } | |
8683 | ||
8684 | #define CLEAR_STATIC_RATE_CONTROL_SMASK(r) \ | |
8685 | (r &= ~SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK) | |
8686 | ||
8687 | #define SET_STATIC_RATE_CONTROL_SMASK(r) \ | |
8688 | (r |= SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK) | |
8689 | ||
8690 | int hfi1_init_ctxt(struct send_context *sc) | |
8691 | { | |
8692 | if (sc != NULL) { | |
8693 | struct hfi1_devdata *dd = sc->dd; | |
8694 | u64 reg; | |
8695 | u8 set = (sc->type == SC_USER ? | |
8696 | HFI1_CAP_IS_USET(STATIC_RATE_CTRL) : | |
8697 | HFI1_CAP_IS_KSET(STATIC_RATE_CTRL)); | |
8698 | reg = read_kctxt_csr(dd, sc->hw_context, | |
8699 | SEND_CTXT_CHECK_ENABLE); | |
8700 | if (set) | |
8701 | CLEAR_STATIC_RATE_CONTROL_SMASK(reg); | |
8702 | else | |
8703 | SET_STATIC_RATE_CONTROL_SMASK(reg); | |
8704 | write_kctxt_csr(dd, sc->hw_context, | |
8705 | SEND_CTXT_CHECK_ENABLE, reg); | |
8706 | } | |
8707 | return 0; | |
8708 | } | |
8709 | ||
8710 | int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp) | |
8711 | { | |
8712 | int ret = 0; | |
8713 | u64 reg; | |
8714 | ||
8715 | if (dd->icode != ICODE_RTL_SILICON) { | |
8716 | if (HFI1_CAP_IS_KSET(PRINT_UNIMPL)) | |
8717 | dd_dev_info(dd, "%s: tempsense not supported by HW\n", | |
8718 | __func__); | |
8719 | return -EINVAL; | |
8720 | } | |
8721 | reg = read_csr(dd, ASIC_STS_THERM); | |
8722 | temp->curr = ((reg >> ASIC_STS_THERM_CURR_TEMP_SHIFT) & | |
8723 | ASIC_STS_THERM_CURR_TEMP_MASK); | |
8724 | temp->lo_lim = ((reg >> ASIC_STS_THERM_LO_TEMP_SHIFT) & | |
8725 | ASIC_STS_THERM_LO_TEMP_MASK); | |
8726 | temp->hi_lim = ((reg >> ASIC_STS_THERM_HI_TEMP_SHIFT) & | |
8727 | ASIC_STS_THERM_HI_TEMP_MASK); | |
8728 | temp->crit_lim = ((reg >> ASIC_STS_THERM_CRIT_TEMP_SHIFT) & | |
8729 | ASIC_STS_THERM_CRIT_TEMP_MASK); | |
8730 | /* triggers is a 3-bit value - 1 bit per trigger. */ | |
8731 | temp->triggers = (u8)((reg >> ASIC_STS_THERM_LOW_SHIFT) & 0x7); | |
8732 | ||
8733 | return ret; | |
8734 | } | |
8735 | ||
8736 | /* ========================================================================= */ | |
8737 | ||
8738 | /* | |
8739 | * Enable/disable chip from delivering interrupts. | |
8740 | */ | |
8741 | void set_intr_state(struct hfi1_devdata *dd, u32 enable) | |
8742 | { | |
8743 | int i; | |
8744 | ||
8745 | /* | |
8746 | * In HFI, the mask needs to be 1 to allow interrupts. | |
8747 | */ | |
8748 | if (enable) { | |
8749 | u64 cce_int_mask; | |
8750 | const int qsfp1_int_smask = QSFP1_INT % 64; | |
8751 | const int qsfp2_int_smask = QSFP2_INT % 64; | |
8752 | ||
8753 | /* enable all interrupts */ | |
8754 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) | |
8755 | write_csr(dd, CCE_INT_MASK + (8*i), ~(u64)0); | |
8756 | ||
8757 | /* | |
8758 | * disable QSFP1 interrupts for HFI1, QSFP2 interrupts for HFI0 | |
8759 | * Qsfp1Int and Qsfp2Int are adjacent bits in the same CSR, | |
8760 | * therefore just one of QSFP1_INT/QSFP2_INT can be used to find | |
8761 | * the index of the appropriate CSR in the CCEIntMask CSR array | |
8762 | */ | |
8763 | cce_int_mask = read_csr(dd, CCE_INT_MASK + | |
8764 | (8*(QSFP1_INT/64))); | |
8765 | if (dd->hfi1_id) { | |
8766 | cce_int_mask &= ~((u64)1 << qsfp1_int_smask); | |
8767 | write_csr(dd, CCE_INT_MASK + (8*(QSFP1_INT/64)), | |
8768 | cce_int_mask); | |
8769 | } else { | |
8770 | cce_int_mask &= ~((u64)1 << qsfp2_int_smask); | |
8771 | write_csr(dd, CCE_INT_MASK + (8*(QSFP2_INT/64)), | |
8772 | cce_int_mask); | |
8773 | } | |
8774 | } else { | |
8775 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) | |
8776 | write_csr(dd, CCE_INT_MASK + (8*i), 0ull); | |
8777 | } | |
8778 | } | |
8779 | ||
8780 | /* | |
8781 | * Clear all interrupt sources on the chip. | |
8782 | */ | |
8783 | static void clear_all_interrupts(struct hfi1_devdata *dd) | |
8784 | { | |
8785 | int i; | |
8786 | ||
8787 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) | |
8788 | write_csr(dd, CCE_INT_CLEAR + (8*i), ~(u64)0); | |
8789 | ||
8790 | write_csr(dd, CCE_ERR_CLEAR, ~(u64)0); | |
8791 | write_csr(dd, MISC_ERR_CLEAR, ~(u64)0); | |
8792 | write_csr(dd, RCV_ERR_CLEAR, ~(u64)0); | |
8793 | write_csr(dd, SEND_ERR_CLEAR, ~(u64)0); | |
8794 | write_csr(dd, SEND_PIO_ERR_CLEAR, ~(u64)0); | |
8795 | write_csr(dd, SEND_DMA_ERR_CLEAR, ~(u64)0); | |
8796 | write_csr(dd, SEND_EGRESS_ERR_CLEAR, ~(u64)0); | |
8797 | for (i = 0; i < dd->chip_send_contexts; i++) | |
8798 | write_kctxt_csr(dd, i, SEND_CTXT_ERR_CLEAR, ~(u64)0); | |
8799 | for (i = 0; i < dd->chip_sdma_engines; i++) | |
8800 | write_kctxt_csr(dd, i, SEND_DMA_ENG_ERR_CLEAR, ~(u64)0); | |
8801 | ||
8802 | write_csr(dd, DCC_ERR_FLG_CLR, ~(u64)0); | |
8803 | write_csr(dd, DC_LCB_ERR_CLR, ~(u64)0); | |
8804 | write_csr(dd, DC_DC8051_ERR_CLR, ~(u64)0); | |
8805 | } | |
8806 | ||
8807 | /* Move to pcie.c? */ | |
8808 | static void disable_intx(struct pci_dev *pdev) | |
8809 | { | |
8810 | pci_intx(pdev, 0); | |
8811 | } | |
8812 | ||
8813 | static void clean_up_interrupts(struct hfi1_devdata *dd) | |
8814 | { | |
8815 | int i; | |
8816 | ||
8817 | /* remove irqs - must happen before disabling/turning off */ | |
8818 | if (dd->num_msix_entries) { | |
8819 | /* MSI-X */ | |
8820 | struct hfi1_msix_entry *me = dd->msix_entries; | |
8821 | ||
8822 | for (i = 0; i < dd->num_msix_entries; i++, me++) { | |
8823 | if (me->arg == NULL) /* => no irq, no affinity */ | |
8824 | break; | |
8825 | irq_set_affinity_hint(dd->msix_entries[i].msix.vector, | |
8826 | NULL); | |
8827 | free_irq(me->msix.vector, me->arg); | |
8828 | } | |
8829 | } else { | |
8830 | /* INTx */ | |
8831 | if (dd->requested_intx_irq) { | |
8832 | free_irq(dd->pcidev->irq, dd); | |
8833 | dd->requested_intx_irq = 0; | |
8834 | } | |
8835 | } | |
8836 | ||
8837 | /* turn off interrupts */ | |
8838 | if (dd->num_msix_entries) { | |
8839 | /* MSI-X */ | |
6e5b6131 | 8840 | pci_disable_msix(dd->pcidev); |
77241056 MM |
8841 | } else { |
8842 | /* INTx */ | |
8843 | disable_intx(dd->pcidev); | |
8844 | } | |
8845 | ||
8846 | /* clean structures */ | |
8847 | for (i = 0; i < dd->num_msix_entries; i++) | |
8848 | free_cpumask_var(dd->msix_entries[i].mask); | |
8849 | kfree(dd->msix_entries); | |
8850 | dd->msix_entries = NULL; | |
8851 | dd->num_msix_entries = 0; | |
8852 | } | |
8853 | ||
8854 | /* | |
8855 | * Remap the interrupt source from the general handler to the given MSI-X | |
8856 | * interrupt. | |
8857 | */ | |
8858 | static void remap_intr(struct hfi1_devdata *dd, int isrc, int msix_intr) | |
8859 | { | |
8860 | u64 reg; | |
8861 | int m, n; | |
8862 | ||
8863 | /* clear from the handled mask of the general interrupt */ | |
8864 | m = isrc / 64; | |
8865 | n = isrc % 64; | |
8866 | dd->gi_mask[m] &= ~((u64)1 << n); | |
8867 | ||
8868 | /* direct the chip source to the given MSI-X interrupt */ | |
8869 | m = isrc / 8; | |
8870 | n = isrc % 8; | |
8871 | reg = read_csr(dd, CCE_INT_MAP + (8*m)); | |
8872 | reg &= ~((u64)0xff << (8*n)); | |
8873 | reg |= ((u64)msix_intr & 0xff) << (8*n); | |
8874 | write_csr(dd, CCE_INT_MAP + (8*m), reg); | |
8875 | } | |
8876 | ||
8877 | static void remap_sdma_interrupts(struct hfi1_devdata *dd, | |
8878 | int engine, int msix_intr) | |
8879 | { | |
8880 | /* | |
8881 | * SDMA engine interrupt sources grouped by type, rather than | |
8882 | * engine. Per-engine interrupts are as follows: | |
8883 | * SDMA | |
8884 | * SDMAProgress | |
8885 | * SDMAIdle | |
8886 | */ | |
8887 | remap_intr(dd, IS_SDMA_START + 0*TXE_NUM_SDMA_ENGINES + engine, | |
8888 | msix_intr); | |
8889 | remap_intr(dd, IS_SDMA_START + 1*TXE_NUM_SDMA_ENGINES + engine, | |
8890 | msix_intr); | |
8891 | remap_intr(dd, IS_SDMA_START + 2*TXE_NUM_SDMA_ENGINES + engine, | |
8892 | msix_intr); | |
8893 | } | |
8894 | ||
77241056 MM |
8895 | static int request_intx_irq(struct hfi1_devdata *dd) |
8896 | { | |
8897 | int ret; | |
8898 | ||
9805071e JJ |
8899 | snprintf(dd->intx_name, sizeof(dd->intx_name), DRIVER_NAME "_%d", |
8900 | dd->unit); | |
77241056 MM |
8901 | ret = request_irq(dd->pcidev->irq, general_interrupt, |
8902 | IRQF_SHARED, dd->intx_name, dd); | |
8903 | if (ret) | |
8904 | dd_dev_err(dd, "unable to request INTx interrupt, err %d\n", | |
8905 | ret); | |
8906 | else | |
8907 | dd->requested_intx_irq = 1; | |
8908 | return ret; | |
8909 | } | |
8910 | ||
8911 | static int request_msix_irqs(struct hfi1_devdata *dd) | |
8912 | { | |
8913 | const struct cpumask *local_mask; | |
8914 | cpumask_var_t def, rcv; | |
8915 | bool def_ret, rcv_ret; | |
8916 | int first_general, last_general; | |
8917 | int first_sdma, last_sdma; | |
8918 | int first_rx, last_rx; | |
82c2611d | 8919 | int first_cpu, curr_cpu; |
77241056 MM |
8920 | int rcv_cpu, sdma_cpu; |
8921 | int i, ret = 0, possible; | |
8922 | int ht; | |
8923 | ||
8924 | /* calculate the ranges we are going to use */ | |
8925 | first_general = 0; | |
8926 | first_sdma = last_general = first_general + 1; | |
8927 | first_rx = last_sdma = first_sdma + dd->num_sdma; | |
8928 | last_rx = first_rx + dd->n_krcv_queues; | |
8929 | ||
8930 | /* | |
8931 | * Interrupt affinity. | |
8932 | * | |
8933 | * non-rcv avail gets a default mask that | |
8934 | * starts as possible cpus with threads reset | |
8935 | * and each rcv avail reset. | |
8936 | * | |
8937 | * rcv avail gets node relative 1 wrapping back | |
8938 | * to the node relative 1 as necessary. | |
8939 | * | |
8940 | */ | |
8941 | local_mask = cpumask_of_pcibus(dd->pcidev->bus); | |
8942 | /* if first cpu is invalid, use NUMA 0 */ | |
8943 | if (cpumask_first(local_mask) >= nr_cpu_ids) | |
8944 | local_mask = topology_core_cpumask(0); | |
8945 | ||
8946 | def_ret = zalloc_cpumask_var(&def, GFP_KERNEL); | |
8947 | rcv_ret = zalloc_cpumask_var(&rcv, GFP_KERNEL); | |
8948 | if (!def_ret || !rcv_ret) | |
8949 | goto bail; | |
8950 | /* use local mask as default */ | |
8951 | cpumask_copy(def, local_mask); | |
8952 | possible = cpumask_weight(def); | |
8953 | /* disarm threads from default */ | |
8954 | ht = cpumask_weight( | |
8955 | topology_sibling_cpumask(cpumask_first(local_mask))); | |
8956 | for (i = possible/ht; i < possible; i++) | |
8957 | cpumask_clear_cpu(i, def); | |
77241056 MM |
8958 | /* def now has full cores on chosen node*/ |
8959 | first_cpu = cpumask_first(def); | |
8960 | if (nr_cpu_ids >= first_cpu) | |
8961 | first_cpu++; | |
82c2611d | 8962 | curr_cpu = first_cpu; |
77241056 | 8963 | |
82c2611d NV |
8964 | /* One context is reserved as control context */ |
8965 | for (i = first_cpu; i < dd->n_krcv_queues + first_cpu - 1; i++) { | |
77241056 MM |
8966 | cpumask_clear_cpu(curr_cpu, def); |
8967 | cpumask_set_cpu(curr_cpu, rcv); | |
82c2611d NV |
8968 | curr_cpu = cpumask_next(curr_cpu, def); |
8969 | if (curr_cpu >= nr_cpu_ids) | |
8970 | break; | |
77241056 MM |
8971 | } |
8972 | /* def mask has non-rcv, rcv has recv mask */ | |
8973 | rcv_cpu = cpumask_first(rcv); | |
8974 | sdma_cpu = cpumask_first(def); | |
8975 | ||
8976 | /* | |
8977 | * Sanity check - the code expects all SDMA chip source | |
8978 | * interrupts to be in the same CSR, starting at bit 0. Verify | |
8979 | * that this is true by checking the bit location of the start. | |
8980 | */ | |
8981 | BUILD_BUG_ON(IS_SDMA_START % 64); | |
8982 | ||
8983 | for (i = 0; i < dd->num_msix_entries; i++) { | |
8984 | struct hfi1_msix_entry *me = &dd->msix_entries[i]; | |
8985 | const char *err_info; | |
8986 | irq_handler_t handler; | |
f4f30031 | 8987 | irq_handler_t thread = NULL; |
77241056 MM |
8988 | void *arg; |
8989 | int idx; | |
8990 | struct hfi1_ctxtdata *rcd = NULL; | |
8991 | struct sdma_engine *sde = NULL; | |
8992 | ||
8993 | /* obtain the arguments to request_irq */ | |
8994 | if (first_general <= i && i < last_general) { | |
8995 | idx = i - first_general; | |
8996 | handler = general_interrupt; | |
8997 | arg = dd; | |
8998 | snprintf(me->name, sizeof(me->name), | |
9805071e | 8999 | DRIVER_NAME "_%d", dd->unit); |
77241056 MM |
9000 | err_info = "general"; |
9001 | } else if (first_sdma <= i && i < last_sdma) { | |
9002 | idx = i - first_sdma; | |
9003 | sde = &dd->per_sdma[idx]; | |
9004 | handler = sdma_interrupt; | |
9005 | arg = sde; | |
9006 | snprintf(me->name, sizeof(me->name), | |
9805071e | 9007 | DRIVER_NAME "_%d sdma%d", dd->unit, idx); |
77241056 MM |
9008 | err_info = "sdma"; |
9009 | remap_sdma_interrupts(dd, idx, i); | |
9010 | } else if (first_rx <= i && i < last_rx) { | |
9011 | idx = i - first_rx; | |
9012 | rcd = dd->rcd[idx]; | |
9013 | /* no interrupt if no rcd */ | |
9014 | if (!rcd) | |
9015 | continue; | |
9016 | /* | |
9017 | * Set the interrupt register and mask for this | |
9018 | * context's interrupt. | |
9019 | */ | |
9020 | rcd->ireg = (IS_RCVAVAIL_START+idx) / 64; | |
9021 | rcd->imask = ((u64)1) << | |
9022 | ((IS_RCVAVAIL_START+idx) % 64); | |
9023 | handler = receive_context_interrupt; | |
f4f30031 | 9024 | thread = receive_context_thread; |
77241056 MM |
9025 | arg = rcd; |
9026 | snprintf(me->name, sizeof(me->name), | |
9805071e | 9027 | DRIVER_NAME "_%d kctxt%d", dd->unit, idx); |
77241056 | 9028 | err_info = "receive context"; |
66c0933b | 9029 | remap_intr(dd, IS_RCVAVAIL_START + idx, i); |
77241056 MM |
9030 | } else { |
9031 | /* not in our expected range - complain, then | |
9032 | ignore it */ | |
9033 | dd_dev_err(dd, | |
9034 | "Unexpected extra MSI-X interrupt %d\n", i); | |
9035 | continue; | |
9036 | } | |
9037 | /* no argument, no interrupt */ | |
9038 | if (arg == NULL) | |
9039 | continue; | |
9040 | /* make sure the name is terminated */ | |
9041 | me->name[sizeof(me->name)-1] = 0; | |
9042 | ||
f4f30031 DL |
9043 | ret = request_threaded_irq(me->msix.vector, handler, thread, 0, |
9044 | me->name, arg); | |
77241056 MM |
9045 | if (ret) { |
9046 | dd_dev_err(dd, | |
9047 | "unable to allocate %s interrupt, vector %d, index %d, err %d\n", | |
9048 | err_info, me->msix.vector, idx, ret); | |
9049 | return ret; | |
9050 | } | |
9051 | /* | |
9052 | * assign arg after request_irq call, so it will be | |
9053 | * cleaned up | |
9054 | */ | |
9055 | me->arg = arg; | |
9056 | ||
9057 | if (!zalloc_cpumask_var( | |
9058 | &dd->msix_entries[i].mask, | |
9059 | GFP_KERNEL)) | |
9060 | goto bail; | |
9061 | if (handler == sdma_interrupt) { | |
9062 | dd_dev_info(dd, "sdma engine %d cpu %d\n", | |
9063 | sde->this_idx, sdma_cpu); | |
0a226edd | 9064 | sde->cpu = sdma_cpu; |
77241056 MM |
9065 | cpumask_set_cpu(sdma_cpu, dd->msix_entries[i].mask); |
9066 | sdma_cpu = cpumask_next(sdma_cpu, def); | |
9067 | if (sdma_cpu >= nr_cpu_ids) | |
9068 | sdma_cpu = cpumask_first(def); | |
9069 | } else if (handler == receive_context_interrupt) { | |
82c2611d NV |
9070 | dd_dev_info(dd, "rcv ctxt %d cpu %d\n", rcd->ctxt, |
9071 | (rcd->ctxt == HFI1_CTRL_CTXT) ? | |
9072 | cpumask_first(def) : rcv_cpu); | |
9073 | if (rcd->ctxt == HFI1_CTRL_CTXT) { | |
9074 | /* map to first default */ | |
9075 | cpumask_set_cpu(cpumask_first(def), | |
9076 | dd->msix_entries[i].mask); | |
9077 | } else { | |
9078 | cpumask_set_cpu(rcv_cpu, | |
9079 | dd->msix_entries[i].mask); | |
9080 | rcv_cpu = cpumask_next(rcv_cpu, rcv); | |
9081 | if (rcv_cpu >= nr_cpu_ids) | |
9082 | rcv_cpu = cpumask_first(rcv); | |
9083 | } | |
77241056 MM |
9084 | } else { |
9085 | /* otherwise first def */ | |
9086 | dd_dev_info(dd, "%s cpu %d\n", | |
9087 | err_info, cpumask_first(def)); | |
9088 | cpumask_set_cpu( | |
9089 | cpumask_first(def), dd->msix_entries[i].mask); | |
9090 | } | |
9091 | irq_set_affinity_hint( | |
9092 | dd->msix_entries[i].msix.vector, | |
9093 | dd->msix_entries[i].mask); | |
9094 | } | |
9095 | ||
9096 | out: | |
9097 | free_cpumask_var(def); | |
9098 | free_cpumask_var(rcv); | |
9099 | return ret; | |
9100 | bail: | |
9101 | ret = -ENOMEM; | |
9102 | goto out; | |
9103 | } | |
9104 | ||
9105 | /* | |
9106 | * Set the general handler to accept all interrupts, remap all | |
9107 | * chip interrupts back to MSI-X 0. | |
9108 | */ | |
9109 | static void reset_interrupts(struct hfi1_devdata *dd) | |
9110 | { | |
9111 | int i; | |
9112 | ||
9113 | /* all interrupts handled by the general handler */ | |
9114 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) | |
9115 | dd->gi_mask[i] = ~(u64)0; | |
9116 | ||
9117 | /* all chip interrupts map to MSI-X 0 */ | |
9118 | for (i = 0; i < CCE_NUM_INT_MAP_CSRS; i++) | |
9119 | write_csr(dd, CCE_INT_MAP + (8*i), 0); | |
9120 | } | |
9121 | ||
9122 | static int set_up_interrupts(struct hfi1_devdata *dd) | |
9123 | { | |
9124 | struct hfi1_msix_entry *entries; | |
9125 | u32 total, request; | |
9126 | int i, ret; | |
9127 | int single_interrupt = 0; /* we expect to have all the interrupts */ | |
9128 | ||
9129 | /* | |
9130 | * Interrupt count: | |
9131 | * 1 general, "slow path" interrupt (includes the SDMA engines | |
9132 | * slow source, SDMACleanupDone) | |
9133 | * N interrupts - one per used SDMA engine | |
9134 | * M interrupt - one per kernel receive context | |
9135 | */ | |
9136 | total = 1 + dd->num_sdma + dd->n_krcv_queues; | |
9137 | ||
9138 | entries = kcalloc(total, sizeof(*entries), GFP_KERNEL); | |
9139 | if (!entries) { | |
77241056 MM |
9140 | ret = -ENOMEM; |
9141 | goto fail; | |
9142 | } | |
9143 | /* 1-1 MSI-X entry assignment */ | |
9144 | for (i = 0; i < total; i++) | |
9145 | entries[i].msix.entry = i; | |
9146 | ||
9147 | /* ask for MSI-X interrupts */ | |
9148 | request = total; | |
9149 | request_msix(dd, &request, entries); | |
9150 | ||
9151 | if (request == 0) { | |
9152 | /* using INTx */ | |
9153 | /* dd->num_msix_entries already zero */ | |
9154 | kfree(entries); | |
9155 | single_interrupt = 1; | |
9156 | dd_dev_err(dd, "MSI-X failed, using INTx interrupts\n"); | |
9157 | } else { | |
9158 | /* using MSI-X */ | |
9159 | dd->num_msix_entries = request; | |
9160 | dd->msix_entries = entries; | |
9161 | ||
9162 | if (request != total) { | |
9163 | /* using MSI-X, with reduced interrupts */ | |
9164 | dd_dev_err( | |
9165 | dd, | |
9166 | "cannot handle reduced interrupt case, want %u, got %u\n", | |
9167 | total, request); | |
9168 | ret = -EINVAL; | |
9169 | goto fail; | |
9170 | } | |
9171 | dd_dev_info(dd, "%u MSI-X interrupts allocated\n", total); | |
9172 | } | |
9173 | ||
9174 | /* mask all interrupts */ | |
9175 | set_intr_state(dd, 0); | |
9176 | /* clear all pending interrupts */ | |
9177 | clear_all_interrupts(dd); | |
9178 | ||
9179 | /* reset general handler mask, chip MSI-X mappings */ | |
9180 | reset_interrupts(dd); | |
9181 | ||
9182 | if (single_interrupt) | |
9183 | ret = request_intx_irq(dd); | |
9184 | else | |
9185 | ret = request_msix_irqs(dd); | |
9186 | if (ret) | |
9187 | goto fail; | |
9188 | ||
9189 | return 0; | |
9190 | ||
9191 | fail: | |
9192 | clean_up_interrupts(dd); | |
9193 | return ret; | |
9194 | } | |
9195 | ||
9196 | /* | |
9197 | * Set up context values in dd. Sets: | |
9198 | * | |
9199 | * num_rcv_contexts - number of contexts being used | |
9200 | * n_krcv_queues - number of kernel contexts | |
9201 | * first_user_ctxt - first non-kernel context in array of contexts | |
9202 | * freectxts - number of free user contexts | |
9203 | * num_send_contexts - number of PIO send contexts being used | |
9204 | */ | |
9205 | static int set_up_context_variables(struct hfi1_devdata *dd) | |
9206 | { | |
9207 | int num_kernel_contexts; | |
9208 | int num_user_contexts; | |
9209 | int total_contexts; | |
9210 | int ret; | |
9211 | unsigned ngroups; | |
9212 | ||
9213 | /* | |
9214 | * Kernel contexts: (to be fixed later): | |
9215 | * - min or 2 or 1 context/numa | |
82c2611d NV |
9216 | * - Context 0 - control context (VL15/multicast/error) |
9217 | * - Context 1 - default context | |
77241056 MM |
9218 | */ |
9219 | if (n_krcvqs) | |
82c2611d NV |
9220 | /* |
9221 | * Don't count context 0 in n_krcvqs since | |
9222 | * is isn't used for normal verbs traffic. | |
9223 | * | |
9224 | * krcvqs will reflect number of kernel | |
9225 | * receive contexts above 0. | |
9226 | */ | |
9227 | num_kernel_contexts = n_krcvqs + MIN_KERNEL_KCTXTS - 1; | |
77241056 MM |
9228 | else |
9229 | num_kernel_contexts = num_online_nodes(); | |
9230 | num_kernel_contexts = | |
9231 | max_t(int, MIN_KERNEL_KCTXTS, num_kernel_contexts); | |
9232 | /* | |
9233 | * Every kernel receive context needs an ACK send context. | |
9234 | * one send context is allocated for each VL{0-7} and VL15 | |
9235 | */ | |
9236 | if (num_kernel_contexts > (dd->chip_send_contexts - num_vls - 1)) { | |
9237 | dd_dev_err(dd, | |
9238 | "Reducing # kernel rcv contexts to: %d, from %d\n", | |
9239 | (int)(dd->chip_send_contexts - num_vls - 1), | |
9240 | (int)num_kernel_contexts); | |
9241 | num_kernel_contexts = dd->chip_send_contexts - num_vls - 1; | |
9242 | } | |
9243 | /* | |
9244 | * User contexts: (to be fixed later) | |
9245 | * - set to num_rcv_contexts if non-zero | |
9246 | * - default to 1 user context per CPU | |
9247 | */ | |
9248 | if (num_rcv_contexts) | |
9249 | num_user_contexts = num_rcv_contexts; | |
9250 | else | |
9251 | num_user_contexts = num_online_cpus(); | |
9252 | ||
9253 | total_contexts = num_kernel_contexts + num_user_contexts; | |
9254 | ||
9255 | /* | |
9256 | * Adjust the counts given a global max. | |
9257 | */ | |
9258 | if (total_contexts > dd->chip_rcv_contexts) { | |
9259 | dd_dev_err(dd, | |
9260 | "Reducing # user receive contexts to: %d, from %d\n", | |
9261 | (int)(dd->chip_rcv_contexts - num_kernel_contexts), | |
9262 | (int)num_user_contexts); | |
9263 | num_user_contexts = dd->chip_rcv_contexts - num_kernel_contexts; | |
9264 | /* recalculate */ | |
9265 | total_contexts = num_kernel_contexts + num_user_contexts; | |
9266 | } | |
9267 | ||
9268 | /* the first N are kernel contexts, the rest are user contexts */ | |
9269 | dd->num_rcv_contexts = total_contexts; | |
9270 | dd->n_krcv_queues = num_kernel_contexts; | |
9271 | dd->first_user_ctxt = num_kernel_contexts; | |
9272 | dd->freectxts = num_user_contexts; | |
9273 | dd_dev_info(dd, | |
9274 | "rcv contexts: chip %d, used %d (kernel %d, user %d)\n", | |
9275 | (int)dd->chip_rcv_contexts, | |
9276 | (int)dd->num_rcv_contexts, | |
9277 | (int)dd->n_krcv_queues, | |
9278 | (int)dd->num_rcv_contexts - dd->n_krcv_queues); | |
9279 | ||
9280 | /* | |
9281 | * Receive array allocation: | |
9282 | * All RcvArray entries are divided into groups of 8. This | |
9283 | * is required by the hardware and will speed up writes to | |
9284 | * consecutive entries by using write-combining of the entire | |
9285 | * cacheline. | |
9286 | * | |
9287 | * The number of groups are evenly divided among all contexts. | |
9288 | * any left over groups will be given to the first N user | |
9289 | * contexts. | |
9290 | */ | |
9291 | dd->rcv_entries.group_size = RCV_INCREMENT; | |
9292 | ngroups = dd->chip_rcv_array_count / dd->rcv_entries.group_size; | |
9293 | dd->rcv_entries.ngroups = ngroups / dd->num_rcv_contexts; | |
9294 | dd->rcv_entries.nctxt_extra = ngroups - | |
9295 | (dd->num_rcv_contexts * dd->rcv_entries.ngroups); | |
9296 | dd_dev_info(dd, "RcvArray groups %u, ctxts extra %u\n", | |
9297 | dd->rcv_entries.ngroups, | |
9298 | dd->rcv_entries.nctxt_extra); | |
9299 | if (dd->rcv_entries.ngroups * dd->rcv_entries.group_size > | |
9300 | MAX_EAGER_ENTRIES * 2) { | |
9301 | dd->rcv_entries.ngroups = (MAX_EAGER_ENTRIES * 2) / | |
9302 | dd->rcv_entries.group_size; | |
9303 | dd_dev_info(dd, | |
9304 | "RcvArray group count too high, change to %u\n", | |
9305 | dd->rcv_entries.ngroups); | |
9306 | dd->rcv_entries.nctxt_extra = 0; | |
9307 | } | |
9308 | /* | |
9309 | * PIO send contexts | |
9310 | */ | |
9311 | ret = init_sc_pools_and_sizes(dd); | |
9312 | if (ret >= 0) { /* success */ | |
9313 | dd->num_send_contexts = ret; | |
9314 | dd_dev_info( | |
9315 | dd, | |
9316 | "send contexts: chip %d, used %d (kernel %d, ack %d, user %d)\n", | |
9317 | dd->chip_send_contexts, | |
9318 | dd->num_send_contexts, | |
9319 | dd->sc_sizes[SC_KERNEL].count, | |
9320 | dd->sc_sizes[SC_ACK].count, | |
9321 | dd->sc_sizes[SC_USER].count); | |
9322 | ret = 0; /* success */ | |
9323 | } | |
9324 | ||
9325 | return ret; | |
9326 | } | |
9327 | ||
9328 | /* | |
9329 | * Set the device/port partition key table. The MAD code | |
9330 | * will ensure that, at least, the partial management | |
9331 | * partition key is present in the table. | |
9332 | */ | |
9333 | static void set_partition_keys(struct hfi1_pportdata *ppd) | |
9334 | { | |
9335 | struct hfi1_devdata *dd = ppd->dd; | |
9336 | u64 reg = 0; | |
9337 | int i; | |
9338 | ||
9339 | dd_dev_info(dd, "Setting partition keys\n"); | |
9340 | for (i = 0; i < hfi1_get_npkeys(dd); i++) { | |
9341 | reg |= (ppd->pkeys[i] & | |
9342 | RCV_PARTITION_KEY_PARTITION_KEY_A_MASK) << | |
9343 | ((i % 4) * | |
9344 | RCV_PARTITION_KEY_PARTITION_KEY_B_SHIFT); | |
9345 | /* Each register holds 4 PKey values. */ | |
9346 | if ((i % 4) == 3) { | |
9347 | write_csr(dd, RCV_PARTITION_KEY + | |
9348 | ((i - 3) * 2), reg); | |
9349 | reg = 0; | |
9350 | } | |
9351 | } | |
9352 | ||
9353 | /* Always enable HW pkeys check when pkeys table is set */ | |
9354 | add_rcvctrl(dd, RCV_CTRL_RCV_PARTITION_KEY_ENABLE_SMASK); | |
9355 | } | |
9356 | ||
9357 | /* | |
9358 | * These CSRs and memories are uninitialized on reset and must be | |
9359 | * written before reading to set the ECC/parity bits. | |
9360 | * | |
9361 | * NOTE: All user context CSRs that are not mmaped write-only | |
9362 | * (e.g. the TID flows) must be initialized even if the driver never | |
9363 | * reads them. | |
9364 | */ | |
9365 | static void write_uninitialized_csrs_and_memories(struct hfi1_devdata *dd) | |
9366 | { | |
9367 | int i, j; | |
9368 | ||
9369 | /* CceIntMap */ | |
9370 | for (i = 0; i < CCE_NUM_INT_MAP_CSRS; i++) | |
9371 | write_csr(dd, CCE_INT_MAP+(8*i), 0); | |
9372 | ||
9373 | /* SendCtxtCreditReturnAddr */ | |
9374 | for (i = 0; i < dd->chip_send_contexts; i++) | |
9375 | write_kctxt_csr(dd, i, SEND_CTXT_CREDIT_RETURN_ADDR, 0); | |
9376 | ||
9377 | /* PIO Send buffers */ | |
9378 | /* SDMA Send buffers */ | |
9379 | /* These are not normally read, and (presently) have no method | |
9380 | to be read, so are not pre-initialized */ | |
9381 | ||
9382 | /* RcvHdrAddr */ | |
9383 | /* RcvHdrTailAddr */ | |
9384 | /* RcvTidFlowTable */ | |
9385 | for (i = 0; i < dd->chip_rcv_contexts; i++) { | |
9386 | write_kctxt_csr(dd, i, RCV_HDR_ADDR, 0); | |
9387 | write_kctxt_csr(dd, i, RCV_HDR_TAIL_ADDR, 0); | |
9388 | for (j = 0; j < RXE_NUM_TID_FLOWS; j++) | |
9389 | write_uctxt_csr(dd, i, RCV_TID_FLOW_TABLE+(8*j), 0); | |
9390 | } | |
9391 | ||
9392 | /* RcvArray */ | |
9393 | for (i = 0; i < dd->chip_rcv_array_count; i++) | |
9394 | write_csr(dd, RCV_ARRAY + (8*i), | |
9395 | RCV_ARRAY_RT_WRITE_ENABLE_SMASK); | |
9396 | ||
9397 | /* RcvQPMapTable */ | |
9398 | for (i = 0; i < 32; i++) | |
9399 | write_csr(dd, RCV_QP_MAP_TABLE + (8 * i), 0); | |
9400 | } | |
9401 | ||
9402 | /* | |
9403 | * Use the ctrl_bits in CceCtrl to clear the status_bits in CceStatus. | |
9404 | */ | |
9405 | static void clear_cce_status(struct hfi1_devdata *dd, u64 status_bits, | |
9406 | u64 ctrl_bits) | |
9407 | { | |
9408 | unsigned long timeout; | |
9409 | u64 reg; | |
9410 | ||
9411 | /* is the condition present? */ | |
9412 | reg = read_csr(dd, CCE_STATUS); | |
9413 | if ((reg & status_bits) == 0) | |
9414 | return; | |
9415 | ||
9416 | /* clear the condition */ | |
9417 | write_csr(dd, CCE_CTRL, ctrl_bits); | |
9418 | ||
9419 | /* wait for the condition to clear */ | |
9420 | timeout = jiffies + msecs_to_jiffies(CCE_STATUS_TIMEOUT); | |
9421 | while (1) { | |
9422 | reg = read_csr(dd, CCE_STATUS); | |
9423 | if ((reg & status_bits) == 0) | |
9424 | return; | |
9425 | if (time_after(jiffies, timeout)) { | |
9426 | dd_dev_err(dd, | |
9427 | "Timeout waiting for CceStatus to clear bits 0x%llx, remaining 0x%llx\n", | |
9428 | status_bits, reg & status_bits); | |
9429 | return; | |
9430 | } | |
9431 | udelay(1); | |
9432 | } | |
9433 | } | |
9434 | ||
9435 | /* set CCE CSRs to chip reset defaults */ | |
9436 | static void reset_cce_csrs(struct hfi1_devdata *dd) | |
9437 | { | |
9438 | int i; | |
9439 | ||
9440 | /* CCE_REVISION read-only */ | |
9441 | /* CCE_REVISION2 read-only */ | |
9442 | /* CCE_CTRL - bits clear automatically */ | |
9443 | /* CCE_STATUS read-only, use CceCtrl to clear */ | |
9444 | clear_cce_status(dd, ALL_FROZE, CCE_CTRL_SPC_UNFREEZE_SMASK); | |
9445 | clear_cce_status(dd, ALL_TXE_PAUSE, CCE_CTRL_TXE_RESUME_SMASK); | |
9446 | clear_cce_status(dd, ALL_RXE_PAUSE, CCE_CTRL_RXE_RESUME_SMASK); | |
9447 | for (i = 0; i < CCE_NUM_SCRATCH; i++) | |
9448 | write_csr(dd, CCE_SCRATCH + (8 * i), 0); | |
9449 | /* CCE_ERR_STATUS read-only */ | |
9450 | write_csr(dd, CCE_ERR_MASK, 0); | |
9451 | write_csr(dd, CCE_ERR_CLEAR, ~0ull); | |
9452 | /* CCE_ERR_FORCE leave alone */ | |
9453 | for (i = 0; i < CCE_NUM_32_BIT_COUNTERS; i++) | |
9454 | write_csr(dd, CCE_COUNTER_ARRAY32 + (8 * i), 0); | |
9455 | write_csr(dd, CCE_DC_CTRL, CCE_DC_CTRL_RESETCSR); | |
9456 | /* CCE_PCIE_CTRL leave alone */ | |
9457 | for (i = 0; i < CCE_NUM_MSIX_VECTORS; i++) { | |
9458 | write_csr(dd, CCE_MSIX_TABLE_LOWER + (8 * i), 0); | |
9459 | write_csr(dd, CCE_MSIX_TABLE_UPPER + (8 * i), | |
9460 | CCE_MSIX_TABLE_UPPER_RESETCSR); | |
9461 | } | |
9462 | for (i = 0; i < CCE_NUM_MSIX_PBAS; i++) { | |
9463 | /* CCE_MSIX_PBA read-only */ | |
9464 | write_csr(dd, CCE_MSIX_INT_GRANTED, ~0ull); | |
9465 | write_csr(dd, CCE_MSIX_VEC_CLR_WITHOUT_INT, ~0ull); | |
9466 | } | |
9467 | for (i = 0; i < CCE_NUM_INT_MAP_CSRS; i++) | |
9468 | write_csr(dd, CCE_INT_MAP, 0); | |
9469 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) { | |
9470 | /* CCE_INT_STATUS read-only */ | |
9471 | write_csr(dd, CCE_INT_MASK + (8 * i), 0); | |
9472 | write_csr(dd, CCE_INT_CLEAR + (8 * i), ~0ull); | |
9473 | /* CCE_INT_FORCE leave alone */ | |
9474 | /* CCE_INT_BLOCKED read-only */ | |
9475 | } | |
9476 | for (i = 0; i < CCE_NUM_32_BIT_INT_COUNTERS; i++) | |
9477 | write_csr(dd, CCE_INT_COUNTER_ARRAY32 + (8 * i), 0); | |
9478 | } | |
9479 | ||
9480 | /* set ASIC CSRs to chip reset defaults */ | |
9481 | static void reset_asic_csrs(struct hfi1_devdata *dd) | |
9482 | { | |
77241056 MM |
9483 | int i; |
9484 | ||
9485 | /* | |
9486 | * If the HFIs are shared between separate nodes or VMs, | |
9487 | * then more will need to be done here. One idea is a module | |
9488 | * parameter that returns early, letting the first power-on or | |
9489 | * a known first load do the reset and blocking all others. | |
9490 | */ | |
9491 | ||
7c03ed85 EH |
9492 | if (!(dd->flags & HFI1_DO_INIT_ASIC)) |
9493 | return; | |
77241056 MM |
9494 | |
9495 | if (dd->icode != ICODE_FPGA_EMULATION) { | |
9496 | /* emulation does not have an SBus - leave these alone */ | |
9497 | /* | |
9498 | * All writes to ASIC_CFG_SBUS_REQUEST do something. | |
9499 | * Notes: | |
9500 | * o The reset is not zero if aimed at the core. See the | |
9501 | * SBus documentation for details. | |
9502 | * o If the SBus firmware has been updated (e.g. by the BIOS), | |
9503 | * will the reset revert that? | |
9504 | */ | |
9505 | /* ASIC_CFG_SBUS_REQUEST leave alone */ | |
9506 | write_csr(dd, ASIC_CFG_SBUS_EXECUTE, 0); | |
9507 | } | |
9508 | /* ASIC_SBUS_RESULT read-only */ | |
9509 | write_csr(dd, ASIC_STS_SBUS_COUNTERS, 0); | |
9510 | for (i = 0; i < ASIC_NUM_SCRATCH; i++) | |
9511 | write_csr(dd, ASIC_CFG_SCRATCH + (8 * i), 0); | |
9512 | write_csr(dd, ASIC_CFG_MUTEX, 0); /* this will clear it */ | |
7c03ed85 EH |
9513 | |
9514 | /* We might want to retain this state across FLR if we ever use it */ | |
77241056 | 9515 | write_csr(dd, ASIC_CFG_DRV_STR, 0); |
7c03ed85 | 9516 | |
4ef98989 | 9517 | /* ASIC_CFG_THERM_POLL_EN leave alone */ |
77241056 MM |
9518 | /* ASIC_STS_THERM read-only */ |
9519 | /* ASIC_CFG_RESET leave alone */ | |
9520 | ||
9521 | write_csr(dd, ASIC_PCIE_SD_HOST_CMD, 0); | |
9522 | /* ASIC_PCIE_SD_HOST_STATUS read-only */ | |
9523 | write_csr(dd, ASIC_PCIE_SD_INTRPT_DATA_CODE, 0); | |
9524 | write_csr(dd, ASIC_PCIE_SD_INTRPT_ENABLE, 0); | |
9525 | /* ASIC_PCIE_SD_INTRPT_PROGRESS read-only */ | |
9526 | write_csr(dd, ASIC_PCIE_SD_INTRPT_STATUS, ~0ull); /* clear */ | |
9527 | /* ASIC_HFI0_PCIE_SD_INTRPT_RSPD_DATA read-only */ | |
9528 | /* ASIC_HFI1_PCIE_SD_INTRPT_RSPD_DATA read-only */ | |
9529 | for (i = 0; i < 16; i++) | |
9530 | write_csr(dd, ASIC_PCIE_SD_INTRPT_LIST + (8 * i), 0); | |
9531 | ||
9532 | /* ASIC_GPIO_IN read-only */ | |
9533 | write_csr(dd, ASIC_GPIO_OE, 0); | |
9534 | write_csr(dd, ASIC_GPIO_INVERT, 0); | |
9535 | write_csr(dd, ASIC_GPIO_OUT, 0); | |
9536 | write_csr(dd, ASIC_GPIO_MASK, 0); | |
9537 | /* ASIC_GPIO_STATUS read-only */ | |
9538 | write_csr(dd, ASIC_GPIO_CLEAR, ~0ull); | |
9539 | /* ASIC_GPIO_FORCE leave alone */ | |
9540 | ||
9541 | /* ASIC_QSFP1_IN read-only */ | |
9542 | write_csr(dd, ASIC_QSFP1_OE, 0); | |
9543 | write_csr(dd, ASIC_QSFP1_INVERT, 0); | |
9544 | write_csr(dd, ASIC_QSFP1_OUT, 0); | |
9545 | write_csr(dd, ASIC_QSFP1_MASK, 0); | |
9546 | /* ASIC_QSFP1_STATUS read-only */ | |
9547 | write_csr(dd, ASIC_QSFP1_CLEAR, ~0ull); | |
9548 | /* ASIC_QSFP1_FORCE leave alone */ | |
9549 | ||
9550 | /* ASIC_QSFP2_IN read-only */ | |
9551 | write_csr(dd, ASIC_QSFP2_OE, 0); | |
9552 | write_csr(dd, ASIC_QSFP2_INVERT, 0); | |
9553 | write_csr(dd, ASIC_QSFP2_OUT, 0); | |
9554 | write_csr(dd, ASIC_QSFP2_MASK, 0); | |
9555 | /* ASIC_QSFP2_STATUS read-only */ | |
9556 | write_csr(dd, ASIC_QSFP2_CLEAR, ~0ull); | |
9557 | /* ASIC_QSFP2_FORCE leave alone */ | |
9558 | ||
9559 | write_csr(dd, ASIC_EEP_CTL_STAT, ASIC_EEP_CTL_STAT_RESETCSR); | |
9560 | /* this also writes a NOP command, clearing paging mode */ | |
9561 | write_csr(dd, ASIC_EEP_ADDR_CMD, 0); | |
9562 | write_csr(dd, ASIC_EEP_DATA, 0); | |
77241056 MM |
9563 | } |
9564 | ||
9565 | /* set MISC CSRs to chip reset defaults */ | |
9566 | static void reset_misc_csrs(struct hfi1_devdata *dd) | |
9567 | { | |
9568 | int i; | |
9569 | ||
9570 | for (i = 0; i < 32; i++) { | |
9571 | write_csr(dd, MISC_CFG_RSA_R2 + (8 * i), 0); | |
9572 | write_csr(dd, MISC_CFG_RSA_SIGNATURE + (8 * i), 0); | |
9573 | write_csr(dd, MISC_CFG_RSA_MODULUS + (8 * i), 0); | |
9574 | } | |
9575 | /* MISC_CFG_SHA_PRELOAD leave alone - always reads 0 and can | |
9576 | only be written 128-byte chunks */ | |
9577 | /* init RSA engine to clear lingering errors */ | |
9578 | write_csr(dd, MISC_CFG_RSA_CMD, 1); | |
9579 | write_csr(dd, MISC_CFG_RSA_MU, 0); | |
9580 | write_csr(dd, MISC_CFG_FW_CTRL, 0); | |
9581 | /* MISC_STS_8051_DIGEST read-only */ | |
9582 | /* MISC_STS_SBM_DIGEST read-only */ | |
9583 | /* MISC_STS_PCIE_DIGEST read-only */ | |
9584 | /* MISC_STS_FAB_DIGEST read-only */ | |
9585 | /* MISC_ERR_STATUS read-only */ | |
9586 | write_csr(dd, MISC_ERR_MASK, 0); | |
9587 | write_csr(dd, MISC_ERR_CLEAR, ~0ull); | |
9588 | /* MISC_ERR_FORCE leave alone */ | |
9589 | } | |
9590 | ||
9591 | /* set TXE CSRs to chip reset defaults */ | |
9592 | static void reset_txe_csrs(struct hfi1_devdata *dd) | |
9593 | { | |
9594 | int i; | |
9595 | ||
9596 | /* | |
9597 | * TXE Kernel CSRs | |
9598 | */ | |
9599 | write_csr(dd, SEND_CTRL, 0); | |
9600 | __cm_reset(dd, 0); /* reset CM internal state */ | |
9601 | /* SEND_CONTEXTS read-only */ | |
9602 | /* SEND_DMA_ENGINES read-only */ | |
9603 | /* SEND_PIO_MEM_SIZE read-only */ | |
9604 | /* SEND_DMA_MEM_SIZE read-only */ | |
9605 | write_csr(dd, SEND_HIGH_PRIORITY_LIMIT, 0); | |
9606 | pio_reset_all(dd); /* SEND_PIO_INIT_CTXT */ | |
9607 | /* SEND_PIO_ERR_STATUS read-only */ | |
9608 | write_csr(dd, SEND_PIO_ERR_MASK, 0); | |
9609 | write_csr(dd, SEND_PIO_ERR_CLEAR, ~0ull); | |
9610 | /* SEND_PIO_ERR_FORCE leave alone */ | |
9611 | /* SEND_DMA_ERR_STATUS read-only */ | |
9612 | write_csr(dd, SEND_DMA_ERR_MASK, 0); | |
9613 | write_csr(dd, SEND_DMA_ERR_CLEAR, ~0ull); | |
9614 | /* SEND_DMA_ERR_FORCE leave alone */ | |
9615 | /* SEND_EGRESS_ERR_STATUS read-only */ | |
9616 | write_csr(dd, SEND_EGRESS_ERR_MASK, 0); | |
9617 | write_csr(dd, SEND_EGRESS_ERR_CLEAR, ~0ull); | |
9618 | /* SEND_EGRESS_ERR_FORCE leave alone */ | |
9619 | write_csr(dd, SEND_BTH_QP, 0); | |
9620 | write_csr(dd, SEND_STATIC_RATE_CONTROL, 0); | |
9621 | write_csr(dd, SEND_SC2VLT0, 0); | |
9622 | write_csr(dd, SEND_SC2VLT1, 0); | |
9623 | write_csr(dd, SEND_SC2VLT2, 0); | |
9624 | write_csr(dd, SEND_SC2VLT3, 0); | |
9625 | write_csr(dd, SEND_LEN_CHECK0, 0); | |
9626 | write_csr(dd, SEND_LEN_CHECK1, 0); | |
9627 | /* SEND_ERR_STATUS read-only */ | |
9628 | write_csr(dd, SEND_ERR_MASK, 0); | |
9629 | write_csr(dd, SEND_ERR_CLEAR, ~0ull); | |
9630 | /* SEND_ERR_FORCE read-only */ | |
9631 | for (i = 0; i < VL_ARB_LOW_PRIO_TABLE_SIZE; i++) | |
9632 | write_csr(dd, SEND_LOW_PRIORITY_LIST + (8*i), 0); | |
9633 | for (i = 0; i < VL_ARB_HIGH_PRIO_TABLE_SIZE; i++) | |
9634 | write_csr(dd, SEND_HIGH_PRIORITY_LIST + (8*i), 0); | |
9635 | for (i = 0; i < dd->chip_send_contexts/NUM_CONTEXTS_PER_SET; i++) | |
9636 | write_csr(dd, SEND_CONTEXT_SET_CTRL + (8*i), 0); | |
9637 | for (i = 0; i < TXE_NUM_32_BIT_COUNTER; i++) | |
9638 | write_csr(dd, SEND_COUNTER_ARRAY32 + (8*i), 0); | |
9639 | for (i = 0; i < TXE_NUM_64_BIT_COUNTER; i++) | |
9640 | write_csr(dd, SEND_COUNTER_ARRAY64 + (8*i), 0); | |
9641 | write_csr(dd, SEND_CM_CTRL, SEND_CM_CTRL_RESETCSR); | |
9642 | write_csr(dd, SEND_CM_GLOBAL_CREDIT, | |
9643 | SEND_CM_GLOBAL_CREDIT_RESETCSR); | |
9644 | /* SEND_CM_CREDIT_USED_STATUS read-only */ | |
9645 | write_csr(dd, SEND_CM_TIMER_CTRL, 0); | |
9646 | write_csr(dd, SEND_CM_LOCAL_AU_TABLE0_TO3, 0); | |
9647 | write_csr(dd, SEND_CM_LOCAL_AU_TABLE4_TO7, 0); | |
9648 | write_csr(dd, SEND_CM_REMOTE_AU_TABLE0_TO3, 0); | |
9649 | write_csr(dd, SEND_CM_REMOTE_AU_TABLE4_TO7, 0); | |
9650 | for (i = 0; i < TXE_NUM_DATA_VL; i++) | |
9651 | write_csr(dd, SEND_CM_CREDIT_VL + (8*i), 0); | |
9652 | write_csr(dd, SEND_CM_CREDIT_VL15, 0); | |
9653 | /* SEND_CM_CREDIT_USED_VL read-only */ | |
9654 | /* SEND_CM_CREDIT_USED_VL15 read-only */ | |
9655 | /* SEND_EGRESS_CTXT_STATUS read-only */ | |
9656 | /* SEND_EGRESS_SEND_DMA_STATUS read-only */ | |
9657 | write_csr(dd, SEND_EGRESS_ERR_INFO, ~0ull); | |
9658 | /* SEND_EGRESS_ERR_INFO read-only */ | |
9659 | /* SEND_EGRESS_ERR_SOURCE read-only */ | |
9660 | ||
9661 | /* | |
9662 | * TXE Per-Context CSRs | |
9663 | */ | |
9664 | for (i = 0; i < dd->chip_send_contexts; i++) { | |
9665 | write_kctxt_csr(dd, i, SEND_CTXT_CTRL, 0); | |
9666 | write_kctxt_csr(dd, i, SEND_CTXT_CREDIT_CTRL, 0); | |
9667 | write_kctxt_csr(dd, i, SEND_CTXT_CREDIT_RETURN_ADDR, 0); | |
9668 | write_kctxt_csr(dd, i, SEND_CTXT_CREDIT_FORCE, 0); | |
9669 | write_kctxt_csr(dd, i, SEND_CTXT_ERR_MASK, 0); | |
9670 | write_kctxt_csr(dd, i, SEND_CTXT_ERR_CLEAR, ~0ull); | |
9671 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_ENABLE, 0); | |
9672 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_VL, 0); | |
9673 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_JOB_KEY, 0); | |
9674 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_PARTITION_KEY, 0); | |
9675 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_SLID, 0); | |
9676 | write_kctxt_csr(dd, i, SEND_CTXT_CHECK_OPCODE, 0); | |
9677 | } | |
9678 | ||
9679 | /* | |
9680 | * TXE Per-SDMA CSRs | |
9681 | */ | |
9682 | for (i = 0; i < dd->chip_sdma_engines; i++) { | |
9683 | write_kctxt_csr(dd, i, SEND_DMA_CTRL, 0); | |
9684 | /* SEND_DMA_STATUS read-only */ | |
9685 | write_kctxt_csr(dd, i, SEND_DMA_BASE_ADDR, 0); | |
9686 | write_kctxt_csr(dd, i, SEND_DMA_LEN_GEN, 0); | |
9687 | write_kctxt_csr(dd, i, SEND_DMA_TAIL, 0); | |
9688 | /* SEND_DMA_HEAD read-only */ | |
9689 | write_kctxt_csr(dd, i, SEND_DMA_HEAD_ADDR, 0); | |
9690 | write_kctxt_csr(dd, i, SEND_DMA_PRIORITY_THLD, 0); | |
9691 | /* SEND_DMA_IDLE_CNT read-only */ | |
9692 | write_kctxt_csr(dd, i, SEND_DMA_RELOAD_CNT, 0); | |
9693 | write_kctxt_csr(dd, i, SEND_DMA_DESC_CNT, 0); | |
9694 | /* SEND_DMA_DESC_FETCHED_CNT read-only */ | |
9695 | /* SEND_DMA_ENG_ERR_STATUS read-only */ | |
9696 | write_kctxt_csr(dd, i, SEND_DMA_ENG_ERR_MASK, 0); | |
9697 | write_kctxt_csr(dd, i, SEND_DMA_ENG_ERR_CLEAR, ~0ull); | |
9698 | /* SEND_DMA_ENG_ERR_FORCE leave alone */ | |
9699 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_ENABLE, 0); | |
9700 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_VL, 0); | |
9701 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_JOB_KEY, 0); | |
9702 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_PARTITION_KEY, 0); | |
9703 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_SLID, 0); | |
9704 | write_kctxt_csr(dd, i, SEND_DMA_CHECK_OPCODE, 0); | |
9705 | write_kctxt_csr(dd, i, SEND_DMA_MEMORY, 0); | |
9706 | } | |
9707 | } | |
9708 | ||
9709 | /* | |
9710 | * Expect on entry: | |
9711 | * o Packet ingress is disabled, i.e. RcvCtrl.RcvPortEnable == 0 | |
9712 | */ | |
9713 | static void init_rbufs(struct hfi1_devdata *dd) | |
9714 | { | |
9715 | u64 reg; | |
9716 | int count; | |
9717 | ||
9718 | /* | |
9719 | * Wait for DMA to stop: RxRbufPktPending and RxPktInProgress are | |
9720 | * clear. | |
9721 | */ | |
9722 | count = 0; | |
9723 | while (1) { | |
9724 | reg = read_csr(dd, RCV_STATUS); | |
9725 | if ((reg & (RCV_STATUS_RX_RBUF_PKT_PENDING_SMASK | |
9726 | | RCV_STATUS_RX_PKT_IN_PROGRESS_SMASK)) == 0) | |
9727 | break; | |
9728 | /* | |
9729 | * Give up after 1ms - maximum wait time. | |
9730 | * | |
9731 | * RBuf size is 148KiB. Slowest possible is PCIe Gen1 x1 at | |
9732 | * 250MB/s bandwidth. Lower rate to 66% for overhead to get: | |
9733 | * 148 KB / (66% * 250MB/s) = 920us | |
9734 | */ | |
9735 | if (count++ > 500) { | |
9736 | dd_dev_err(dd, | |
9737 | "%s: in-progress DMA not clearing: RcvStatus 0x%llx, continuing\n", | |
9738 | __func__, reg); | |
9739 | break; | |
9740 | } | |
9741 | udelay(2); /* do not busy-wait the CSR */ | |
9742 | } | |
9743 | ||
9744 | /* start the init - expect RcvCtrl to be 0 */ | |
9745 | write_csr(dd, RCV_CTRL, RCV_CTRL_RX_RBUF_INIT_SMASK); | |
9746 | ||
9747 | /* | |
9748 | * Read to force the write of Rcvtrl.RxRbufInit. There is a brief | |
9749 | * period after the write before RcvStatus.RxRbufInitDone is valid. | |
9750 | * The delay in the first run through the loop below is sufficient and | |
9751 | * required before the first read of RcvStatus.RxRbufInintDone. | |
9752 | */ | |
9753 | read_csr(dd, RCV_CTRL); | |
9754 | ||
9755 | /* wait for the init to finish */ | |
9756 | count = 0; | |
9757 | while (1) { | |
9758 | /* delay is required first time through - see above */ | |
9759 | udelay(2); /* do not busy-wait the CSR */ | |
9760 | reg = read_csr(dd, RCV_STATUS); | |
9761 | if (reg & (RCV_STATUS_RX_RBUF_INIT_DONE_SMASK)) | |
9762 | break; | |
9763 | ||
9764 | /* give up after 100us - slowest possible at 33MHz is 73us */ | |
9765 | if (count++ > 50) { | |
9766 | dd_dev_err(dd, | |
9767 | "%s: RcvStatus.RxRbufInit not set, continuing\n", | |
9768 | __func__); | |
9769 | break; | |
9770 | } | |
9771 | } | |
9772 | } | |
9773 | ||
9774 | /* set RXE CSRs to chip reset defaults */ | |
9775 | static void reset_rxe_csrs(struct hfi1_devdata *dd) | |
9776 | { | |
9777 | int i, j; | |
9778 | ||
9779 | /* | |
9780 | * RXE Kernel CSRs | |
9781 | */ | |
9782 | write_csr(dd, RCV_CTRL, 0); | |
9783 | init_rbufs(dd); | |
9784 | /* RCV_STATUS read-only */ | |
9785 | /* RCV_CONTEXTS read-only */ | |
9786 | /* RCV_ARRAY_CNT read-only */ | |
9787 | /* RCV_BUF_SIZE read-only */ | |
9788 | write_csr(dd, RCV_BTH_QP, 0); | |
9789 | write_csr(dd, RCV_MULTICAST, 0); | |
9790 | write_csr(dd, RCV_BYPASS, 0); | |
9791 | write_csr(dd, RCV_VL15, 0); | |
9792 | /* this is a clear-down */ | |
9793 | write_csr(dd, RCV_ERR_INFO, | |
9794 | RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK); | |
9795 | /* RCV_ERR_STATUS read-only */ | |
9796 | write_csr(dd, RCV_ERR_MASK, 0); | |
9797 | write_csr(dd, RCV_ERR_CLEAR, ~0ull); | |
9798 | /* RCV_ERR_FORCE leave alone */ | |
9799 | for (i = 0; i < 32; i++) | |
9800 | write_csr(dd, RCV_QP_MAP_TABLE + (8 * i), 0); | |
9801 | for (i = 0; i < 4; i++) | |
9802 | write_csr(dd, RCV_PARTITION_KEY + (8 * i), 0); | |
9803 | for (i = 0; i < RXE_NUM_32_BIT_COUNTERS; i++) | |
9804 | write_csr(dd, RCV_COUNTER_ARRAY32 + (8 * i), 0); | |
9805 | for (i = 0; i < RXE_NUM_64_BIT_COUNTERS; i++) | |
9806 | write_csr(dd, RCV_COUNTER_ARRAY64 + (8 * i), 0); | |
9807 | for (i = 0; i < RXE_NUM_RSM_INSTANCES; i++) { | |
9808 | write_csr(dd, RCV_RSM_CFG + (8 * i), 0); | |
9809 | write_csr(dd, RCV_RSM_SELECT + (8 * i), 0); | |
9810 | write_csr(dd, RCV_RSM_MATCH + (8 * i), 0); | |
9811 | } | |
9812 | for (i = 0; i < 32; i++) | |
9813 | write_csr(dd, RCV_RSM_MAP_TABLE + (8 * i), 0); | |
9814 | ||
9815 | /* | |
9816 | * RXE Kernel and User Per-Context CSRs | |
9817 | */ | |
9818 | for (i = 0; i < dd->chip_rcv_contexts; i++) { | |
9819 | /* kernel */ | |
9820 | write_kctxt_csr(dd, i, RCV_CTXT_CTRL, 0); | |
9821 | /* RCV_CTXT_STATUS read-only */ | |
9822 | write_kctxt_csr(dd, i, RCV_EGR_CTRL, 0); | |
9823 | write_kctxt_csr(dd, i, RCV_TID_CTRL, 0); | |
9824 | write_kctxt_csr(dd, i, RCV_KEY_CTRL, 0); | |
9825 | write_kctxt_csr(dd, i, RCV_HDR_ADDR, 0); | |
9826 | write_kctxt_csr(dd, i, RCV_HDR_CNT, 0); | |
9827 | write_kctxt_csr(dd, i, RCV_HDR_ENT_SIZE, 0); | |
9828 | write_kctxt_csr(dd, i, RCV_HDR_SIZE, 0); | |
9829 | write_kctxt_csr(dd, i, RCV_HDR_TAIL_ADDR, 0); | |
9830 | write_kctxt_csr(dd, i, RCV_AVAIL_TIME_OUT, 0); | |
9831 | write_kctxt_csr(dd, i, RCV_HDR_OVFL_CNT, 0); | |
9832 | ||
9833 | /* user */ | |
9834 | /* RCV_HDR_TAIL read-only */ | |
9835 | write_uctxt_csr(dd, i, RCV_HDR_HEAD, 0); | |
9836 | /* RCV_EGR_INDEX_TAIL read-only */ | |
9837 | write_uctxt_csr(dd, i, RCV_EGR_INDEX_HEAD, 0); | |
9838 | /* RCV_EGR_OFFSET_TAIL read-only */ | |
9839 | for (j = 0; j < RXE_NUM_TID_FLOWS; j++) { | |
9840 | write_uctxt_csr(dd, i, RCV_TID_FLOW_TABLE + (8 * j), | |
9841 | 0); | |
9842 | } | |
9843 | } | |
9844 | } | |
9845 | ||
9846 | /* | |
9847 | * Set sc2vl tables. | |
9848 | * | |
9849 | * They power on to zeros, so to avoid send context errors | |
9850 | * they need to be set: | |
9851 | * | |
9852 | * SC 0-7 -> VL 0-7 (respectively) | |
9853 | * SC 15 -> VL 15 | |
9854 | * otherwise | |
9855 | * -> VL 0 | |
9856 | */ | |
9857 | static void init_sc2vl_tables(struct hfi1_devdata *dd) | |
9858 | { | |
9859 | int i; | |
9860 | /* init per architecture spec, constrained by hardware capability */ | |
9861 | ||
9862 | /* HFI maps sent packets */ | |
9863 | write_csr(dd, SEND_SC2VLT0, SC2VL_VAL( | |
9864 | 0, | |
9865 | 0, 0, 1, 1, | |
9866 | 2, 2, 3, 3, | |
9867 | 4, 4, 5, 5, | |
9868 | 6, 6, 7, 7)); | |
9869 | write_csr(dd, SEND_SC2VLT1, SC2VL_VAL( | |
9870 | 1, | |
9871 | 8, 0, 9, 0, | |
9872 | 10, 0, 11, 0, | |
9873 | 12, 0, 13, 0, | |
9874 | 14, 0, 15, 15)); | |
9875 | write_csr(dd, SEND_SC2VLT2, SC2VL_VAL( | |
9876 | 2, | |
9877 | 16, 0, 17, 0, | |
9878 | 18, 0, 19, 0, | |
9879 | 20, 0, 21, 0, | |
9880 | 22, 0, 23, 0)); | |
9881 | write_csr(dd, SEND_SC2VLT3, SC2VL_VAL( | |
9882 | 3, | |
9883 | 24, 0, 25, 0, | |
9884 | 26, 0, 27, 0, | |
9885 | 28, 0, 29, 0, | |
9886 | 30, 0, 31, 0)); | |
9887 | ||
9888 | /* DC maps received packets */ | |
9889 | write_csr(dd, DCC_CFG_SC_VL_TABLE_15_0, DC_SC_VL_VAL( | |
9890 | 15_0, | |
9891 | 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, | |
9892 | 8, 0, 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 15)); | |
9893 | write_csr(dd, DCC_CFG_SC_VL_TABLE_31_16, DC_SC_VL_VAL( | |
9894 | 31_16, | |
9895 | 16, 0, 17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, | |
9896 | 24, 0, 25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0)); | |
9897 | ||
9898 | /* initialize the cached sc2vl values consistently with h/w */ | |
9899 | for (i = 0; i < 32; i++) { | |
9900 | if (i < 8 || i == 15) | |
9901 | *((u8 *)(dd->sc2vl) + i) = (u8)i; | |
9902 | else | |
9903 | *((u8 *)(dd->sc2vl) + i) = 0; | |
9904 | } | |
9905 | } | |
9906 | ||
9907 | /* | |
9908 | * Read chip sizes and then reset parts to sane, disabled, values. We cannot | |
9909 | * depend on the chip going through a power-on reset - a driver may be loaded | |
9910 | * and unloaded many times. | |
9911 | * | |
9912 | * Do not write any CSR values to the chip in this routine - there may be | |
9913 | * a reset following the (possible) FLR in this routine. | |
9914 | * | |
9915 | */ | |
9916 | static void init_chip(struct hfi1_devdata *dd) | |
9917 | { | |
9918 | int i; | |
9919 | ||
9920 | /* | |
9921 | * Put the HFI CSRs in a known state. | |
9922 | * Combine this with a DC reset. | |
9923 | * | |
9924 | * Stop the device from doing anything while we do a | |
9925 | * reset. We know there are no other active users of | |
9926 | * the device since we are now in charge. Turn off | |
9927 | * off all outbound and inbound traffic and make sure | |
9928 | * the device does not generate any interrupts. | |
9929 | */ | |
9930 | ||
9931 | /* disable send contexts and SDMA engines */ | |
9932 | write_csr(dd, SEND_CTRL, 0); | |
9933 | for (i = 0; i < dd->chip_send_contexts; i++) | |
9934 | write_kctxt_csr(dd, i, SEND_CTXT_CTRL, 0); | |
9935 | for (i = 0; i < dd->chip_sdma_engines; i++) | |
9936 | write_kctxt_csr(dd, i, SEND_DMA_CTRL, 0); | |
9937 | /* disable port (turn off RXE inbound traffic) and contexts */ | |
9938 | write_csr(dd, RCV_CTRL, 0); | |
9939 | for (i = 0; i < dd->chip_rcv_contexts; i++) | |
9940 | write_csr(dd, RCV_CTXT_CTRL, 0); | |
9941 | /* mask all interrupt sources */ | |
9942 | for (i = 0; i < CCE_NUM_INT_CSRS; i++) | |
9943 | write_csr(dd, CCE_INT_MASK + (8*i), 0ull); | |
9944 | ||
9945 | /* | |
9946 | * DC Reset: do a full DC reset before the register clear. | |
9947 | * A recommended length of time to hold is one CSR read, | |
9948 | * so reread the CceDcCtrl. Then, hold the DC in reset | |
9949 | * across the clear. | |
9950 | */ | |
9951 | write_csr(dd, CCE_DC_CTRL, CCE_DC_CTRL_DC_RESET_SMASK); | |
9952 | (void) read_csr(dd, CCE_DC_CTRL); | |
9953 | ||
9954 | if (use_flr) { | |
9955 | /* | |
9956 | * A FLR will reset the SPC core and part of the PCIe. | |
9957 | * The parts that need to be restored have already been | |
9958 | * saved. | |
9959 | */ | |
9960 | dd_dev_info(dd, "Resetting CSRs with FLR\n"); | |
9961 | ||
9962 | /* do the FLR, the DC reset will remain */ | |
9963 | hfi1_pcie_flr(dd); | |
9964 | ||
9965 | /* restore command and BARs */ | |
9966 | restore_pci_variables(dd); | |
9967 | ||
995deafa | 9968 | if (is_ax(dd)) { |
77241056 MM |
9969 | dd_dev_info(dd, "Resetting CSRs with FLR\n"); |
9970 | hfi1_pcie_flr(dd); | |
9971 | restore_pci_variables(dd); | |
9972 | } | |
9973 | ||
7c03ed85 | 9974 | reset_asic_csrs(dd); |
77241056 MM |
9975 | } else { |
9976 | dd_dev_info(dd, "Resetting CSRs with writes\n"); | |
9977 | reset_cce_csrs(dd); | |
9978 | reset_txe_csrs(dd); | |
9979 | reset_rxe_csrs(dd); | |
9980 | reset_asic_csrs(dd); | |
9981 | reset_misc_csrs(dd); | |
9982 | } | |
9983 | /* clear the DC reset */ | |
9984 | write_csr(dd, CCE_DC_CTRL, 0); | |
7c03ed85 | 9985 | |
77241056 | 9986 | /* Set the LED off */ |
995deafa | 9987 | if (is_ax(dd)) |
77241056 MM |
9988 | setextled(dd, 0); |
9989 | /* | |
9990 | * Clear the QSFP reset. | |
72a67ba2 | 9991 | * An FLR enforces a 0 on all out pins. The driver does not touch |
77241056 | 9992 | * ASIC_QSFPn_OUT otherwise. This leaves RESET_N low and |
72a67ba2 | 9993 | * anything plugged constantly in reset, if it pays attention |
77241056 | 9994 | * to RESET_N. |
72a67ba2 | 9995 | * Prime examples of this are optical cables. Set all pins high. |
77241056 MM |
9996 | * I2CCLK and I2CDAT will change per direction, and INT_N and |
9997 | * MODPRS_N are input only and their value is ignored. | |
9998 | */ | |
72a67ba2 EH |
9999 | write_csr(dd, ASIC_QSFP1_OUT, 0x1f); |
10000 | write_csr(dd, ASIC_QSFP2_OUT, 0x1f); | |
77241056 MM |
10001 | } |
10002 | ||
10003 | static void init_early_variables(struct hfi1_devdata *dd) | |
10004 | { | |
10005 | int i; | |
10006 | ||
10007 | /* assign link credit variables */ | |
10008 | dd->vau = CM_VAU; | |
10009 | dd->link_credits = CM_GLOBAL_CREDITS; | |
995deafa | 10010 | if (is_ax(dd)) |
77241056 MM |
10011 | dd->link_credits--; |
10012 | dd->vcu = cu_to_vcu(hfi1_cu); | |
10013 | /* enough room for 8 MAD packets plus header - 17K */ | |
10014 | dd->vl15_init = (8 * (2048 + 128)) / vau_to_au(dd->vau); | |
10015 | if (dd->vl15_init > dd->link_credits) | |
10016 | dd->vl15_init = dd->link_credits; | |
10017 | ||
10018 | write_uninitialized_csrs_and_memories(dd); | |
10019 | ||
10020 | if (HFI1_CAP_IS_KSET(PKEY_CHECK)) | |
10021 | for (i = 0; i < dd->num_pports; i++) { | |
10022 | struct hfi1_pportdata *ppd = &dd->pport[i]; | |
10023 | ||
10024 | set_partition_keys(ppd); | |
10025 | } | |
10026 | init_sc2vl_tables(dd); | |
10027 | } | |
10028 | ||
10029 | static void init_kdeth_qp(struct hfi1_devdata *dd) | |
10030 | { | |
10031 | /* user changed the KDETH_QP */ | |
10032 | if (kdeth_qp != 0 && kdeth_qp >= 0xff) { | |
10033 | /* out of range or illegal value */ | |
10034 | dd_dev_err(dd, "Invalid KDETH queue pair prefix, ignoring"); | |
10035 | kdeth_qp = 0; | |
10036 | } | |
10037 | if (kdeth_qp == 0) /* not set, or failed range check */ | |
10038 | kdeth_qp = DEFAULT_KDETH_QP; | |
10039 | ||
10040 | write_csr(dd, SEND_BTH_QP, | |
10041 | (kdeth_qp & SEND_BTH_QP_KDETH_QP_MASK) | |
10042 | << SEND_BTH_QP_KDETH_QP_SHIFT); | |
10043 | ||
10044 | write_csr(dd, RCV_BTH_QP, | |
10045 | (kdeth_qp & RCV_BTH_QP_KDETH_QP_MASK) | |
10046 | << RCV_BTH_QP_KDETH_QP_SHIFT); | |
10047 | } | |
10048 | ||
10049 | /** | |
10050 | * init_qpmap_table | |
10051 | * @dd - device data | |
10052 | * @first_ctxt - first context | |
10053 | * @last_ctxt - first context | |
10054 | * | |
10055 | * This return sets the qpn mapping table that | |
10056 | * is indexed by qpn[8:1]. | |
10057 | * | |
10058 | * The routine will round robin the 256 settings | |
10059 | * from first_ctxt to last_ctxt. | |
10060 | * | |
10061 | * The first/last looks ahead to having specialized | |
10062 | * receive contexts for mgmt and bypass. Normal | |
10063 | * verbs traffic will assumed to be on a range | |
10064 | * of receive contexts. | |
10065 | */ | |
10066 | static void init_qpmap_table(struct hfi1_devdata *dd, | |
10067 | u32 first_ctxt, | |
10068 | u32 last_ctxt) | |
10069 | { | |
10070 | u64 reg = 0; | |
10071 | u64 regno = RCV_QP_MAP_TABLE; | |
10072 | int i; | |
10073 | u64 ctxt = first_ctxt; | |
10074 | ||
10075 | for (i = 0; i < 256;) { | |
77241056 MM |
10076 | reg |= ctxt << (8 * (i % 8)); |
10077 | i++; | |
10078 | ctxt++; | |
10079 | if (ctxt > last_ctxt) | |
10080 | ctxt = first_ctxt; | |
10081 | if (i % 8 == 0) { | |
10082 | write_csr(dd, regno, reg); | |
10083 | reg = 0; | |
10084 | regno += 8; | |
10085 | } | |
10086 | } | |
10087 | if (i % 8) | |
10088 | write_csr(dd, regno, reg); | |
10089 | ||
10090 | add_rcvctrl(dd, RCV_CTRL_RCV_QP_MAP_ENABLE_SMASK | |
10091 | | RCV_CTRL_RCV_BYPASS_ENABLE_SMASK); | |
10092 | } | |
10093 | ||
10094 | /** | |
10095 | * init_qos - init RX qos | |
10096 | * @dd - device data | |
10097 | * @first_context | |
10098 | * | |
10099 | * This routine initializes Rule 0 and the | |
10100 | * RSM map table to implement qos. | |
10101 | * | |
10102 | * If all of the limit tests succeed, | |
10103 | * qos is applied based on the array | |
10104 | * interpretation of krcvqs where | |
10105 | * entry 0 is VL0. | |
10106 | * | |
10107 | * The number of vl bits (n) and the number of qpn | |
10108 | * bits (m) are computed to feed both the RSM map table | |
10109 | * and the single rule. | |
10110 | * | |
10111 | */ | |
10112 | static void init_qos(struct hfi1_devdata *dd, u32 first_ctxt) | |
10113 | { | |
10114 | u8 max_by_vl = 0; | |
10115 | unsigned qpns_per_vl, ctxt, i, qpn, n = 1, m; | |
10116 | u64 *rsmmap; | |
10117 | u64 reg; | |
995deafa | 10118 | u8 rxcontext = is_ax(dd) ? 0 : 0xff; /* 0 is default if a0 ver. */ |
77241056 MM |
10119 | |
10120 | /* validate */ | |
10121 | if (dd->n_krcv_queues <= MIN_KERNEL_KCTXTS || | |
10122 | num_vls == 1 || | |
10123 | krcvqsset <= 1) | |
10124 | goto bail; | |
10125 | for (i = 0; i < min_t(unsigned, num_vls, krcvqsset); i++) | |
10126 | if (krcvqs[i] > max_by_vl) | |
10127 | max_by_vl = krcvqs[i]; | |
10128 | if (max_by_vl > 32) | |
10129 | goto bail; | |
10130 | qpns_per_vl = __roundup_pow_of_two(max_by_vl); | |
10131 | /* determine bits vl */ | |
10132 | n = ilog2(num_vls); | |
10133 | /* determine bits for qpn */ | |
10134 | m = ilog2(qpns_per_vl); | |
10135 | if ((m + n) > 7) | |
10136 | goto bail; | |
10137 | if (num_vls * qpns_per_vl > dd->chip_rcv_contexts) | |
10138 | goto bail; | |
10139 | rsmmap = kmalloc_array(NUM_MAP_REGS, sizeof(u64), GFP_KERNEL); | |
10140 | memset(rsmmap, rxcontext, NUM_MAP_REGS * sizeof(u64)); | |
10141 | /* init the local copy of the table */ | |
10142 | for (i = 0, ctxt = first_ctxt; i < num_vls; i++) { | |
10143 | unsigned tctxt; | |
10144 | ||
10145 | for (qpn = 0, tctxt = ctxt; | |
10146 | krcvqs[i] && qpn < qpns_per_vl; qpn++) { | |
10147 | unsigned idx, regoff, regidx; | |
10148 | ||
10149 | /* generate index <= 128 */ | |
10150 | idx = (qpn << n) ^ i; | |
10151 | regoff = (idx % 8) * 8; | |
10152 | regidx = idx / 8; | |
10153 | reg = rsmmap[regidx]; | |
10154 | /* replace 0xff with context number */ | |
10155 | reg &= ~(RCV_RSM_MAP_TABLE_RCV_CONTEXT_A_MASK | |
10156 | << regoff); | |
10157 | reg |= (u64)(tctxt++) << regoff; | |
10158 | rsmmap[regidx] = reg; | |
10159 | if (tctxt == ctxt + krcvqs[i]) | |
10160 | tctxt = ctxt; | |
10161 | } | |
10162 | ctxt += krcvqs[i]; | |
10163 | } | |
10164 | /* flush cached copies to chip */ | |
10165 | for (i = 0; i < NUM_MAP_REGS; i++) | |
10166 | write_csr(dd, RCV_RSM_MAP_TABLE + (8 * i), rsmmap[i]); | |
10167 | /* add rule0 */ | |
10168 | write_csr(dd, RCV_RSM_CFG /* + (8 * 0) */, | |
10169 | RCV_RSM_CFG_ENABLE_OR_CHAIN_RSM0_MASK | |
10170 | << RCV_RSM_CFG_ENABLE_OR_CHAIN_RSM0_SHIFT | | |
10171 | 2ull << RCV_RSM_CFG_PACKET_TYPE_SHIFT); | |
10172 | write_csr(dd, RCV_RSM_SELECT /* + (8 * 0) */, | |
10173 | LRH_BTH_MATCH_OFFSET | |
10174 | << RCV_RSM_SELECT_FIELD1_OFFSET_SHIFT | | |
10175 | LRH_SC_MATCH_OFFSET << RCV_RSM_SELECT_FIELD2_OFFSET_SHIFT | | |
10176 | LRH_SC_SELECT_OFFSET << RCV_RSM_SELECT_INDEX1_OFFSET_SHIFT | | |
10177 | ((u64)n) << RCV_RSM_SELECT_INDEX1_WIDTH_SHIFT | | |
10178 | QPN_SELECT_OFFSET << RCV_RSM_SELECT_INDEX2_OFFSET_SHIFT | | |
10179 | ((u64)m + (u64)n) << RCV_RSM_SELECT_INDEX2_WIDTH_SHIFT); | |
10180 | write_csr(dd, RCV_RSM_MATCH /* + (8 * 0) */, | |
10181 | LRH_BTH_MASK << RCV_RSM_MATCH_MASK1_SHIFT | | |
10182 | LRH_BTH_VALUE << RCV_RSM_MATCH_VALUE1_SHIFT | | |
10183 | LRH_SC_MASK << RCV_RSM_MATCH_MASK2_SHIFT | | |
10184 | LRH_SC_VALUE << RCV_RSM_MATCH_VALUE2_SHIFT); | |
10185 | /* Enable RSM */ | |
10186 | add_rcvctrl(dd, RCV_CTRL_RCV_RSM_ENABLE_SMASK); | |
10187 | kfree(rsmmap); | |
82c2611d NV |
10188 | /* map everything else to first context */ |
10189 | init_qpmap_table(dd, FIRST_KERNEL_KCTXT, MIN_KERNEL_KCTXTS - 1); | |
77241056 MM |
10190 | dd->qos_shift = n + 1; |
10191 | return; | |
10192 | bail: | |
10193 | dd->qos_shift = 1; | |
82c2611d | 10194 | init_qpmap_table(dd, FIRST_KERNEL_KCTXT, dd->n_krcv_queues - 1); |
77241056 MM |
10195 | } |
10196 | ||
10197 | static void init_rxe(struct hfi1_devdata *dd) | |
10198 | { | |
10199 | /* enable all receive errors */ | |
10200 | write_csr(dd, RCV_ERR_MASK, ~0ull); | |
10201 | /* setup QPN map table - start where VL15 context leaves off */ | |
10202 | init_qos( | |
10203 | dd, | |
10204 | dd->n_krcv_queues > MIN_KERNEL_KCTXTS ? MIN_KERNEL_KCTXTS : 0); | |
10205 | /* | |
10206 | * make sure RcvCtrl.RcvWcb <= PCIe Device Control | |
10207 | * Register Max_Payload_Size (PCI_EXP_DEVCTL in Linux PCIe config | |
10208 | * space, PciCfgCap2.MaxPayloadSize in HFI). There is only one | |
10209 | * invalid configuration: RcvCtrl.RcvWcb set to its max of 256 and | |
10210 | * Max_PayLoad_Size set to its minimum of 128. | |
10211 | * | |
10212 | * Presently, RcvCtrl.RcvWcb is not modified from its default of 0 | |
10213 | * (64 bytes). Max_Payload_Size is possibly modified upward in | |
10214 | * tune_pcie_caps() which is called after this routine. | |
10215 | */ | |
10216 | } | |
10217 | ||
10218 | static void init_other(struct hfi1_devdata *dd) | |
10219 | { | |
10220 | /* enable all CCE errors */ | |
10221 | write_csr(dd, CCE_ERR_MASK, ~0ull); | |
10222 | /* enable *some* Misc errors */ | |
10223 | write_csr(dd, MISC_ERR_MASK, DRIVER_MISC_MASK); | |
10224 | /* enable all DC errors, except LCB */ | |
10225 | write_csr(dd, DCC_ERR_FLG_EN, ~0ull); | |
10226 | write_csr(dd, DC_DC8051_ERR_EN, ~0ull); | |
10227 | } | |
10228 | ||
10229 | /* | |
10230 | * Fill out the given AU table using the given CU. A CU is defined in terms | |
10231 | * AUs. The table is a an encoding: given the index, how many AUs does that | |
10232 | * represent? | |
10233 | * | |
10234 | * NOTE: Assumes that the register layout is the same for the | |
10235 | * local and remote tables. | |
10236 | */ | |
10237 | static void assign_cm_au_table(struct hfi1_devdata *dd, u32 cu, | |
10238 | u32 csr0to3, u32 csr4to7) | |
10239 | { | |
10240 | write_csr(dd, csr0to3, | |
10241 | 0ull << | |
10242 | SEND_CM_LOCAL_AU_TABLE0_TO3_LOCAL_AU_TABLE0_SHIFT | |
10243 | | 1ull << | |
10244 | SEND_CM_LOCAL_AU_TABLE0_TO3_LOCAL_AU_TABLE1_SHIFT | |
10245 | | 2ull * cu << | |
10246 | SEND_CM_LOCAL_AU_TABLE0_TO3_LOCAL_AU_TABLE2_SHIFT | |
10247 | | 4ull * cu << | |
10248 | SEND_CM_LOCAL_AU_TABLE0_TO3_LOCAL_AU_TABLE3_SHIFT); | |
10249 | write_csr(dd, csr4to7, | |
10250 | 8ull * cu << | |
10251 | SEND_CM_LOCAL_AU_TABLE4_TO7_LOCAL_AU_TABLE4_SHIFT | |
10252 | | 16ull * cu << | |
10253 | SEND_CM_LOCAL_AU_TABLE4_TO7_LOCAL_AU_TABLE5_SHIFT | |
10254 | | 32ull * cu << | |
10255 | SEND_CM_LOCAL_AU_TABLE4_TO7_LOCAL_AU_TABLE6_SHIFT | |
10256 | | 64ull * cu << | |
10257 | SEND_CM_LOCAL_AU_TABLE4_TO7_LOCAL_AU_TABLE7_SHIFT); | |
10258 | ||
10259 | } | |
10260 | ||
10261 | static void assign_local_cm_au_table(struct hfi1_devdata *dd, u8 vcu) | |
10262 | { | |
10263 | assign_cm_au_table(dd, vcu_to_cu(vcu), SEND_CM_LOCAL_AU_TABLE0_TO3, | |
10264 | SEND_CM_LOCAL_AU_TABLE4_TO7); | |
10265 | } | |
10266 | ||
10267 | void assign_remote_cm_au_table(struct hfi1_devdata *dd, u8 vcu) | |
10268 | { | |
10269 | assign_cm_au_table(dd, vcu_to_cu(vcu), SEND_CM_REMOTE_AU_TABLE0_TO3, | |
10270 | SEND_CM_REMOTE_AU_TABLE4_TO7); | |
10271 | } | |
10272 | ||
10273 | static void init_txe(struct hfi1_devdata *dd) | |
10274 | { | |
10275 | int i; | |
10276 | ||
10277 | /* enable all PIO, SDMA, general, and Egress errors */ | |
10278 | write_csr(dd, SEND_PIO_ERR_MASK, ~0ull); | |
10279 | write_csr(dd, SEND_DMA_ERR_MASK, ~0ull); | |
10280 | write_csr(dd, SEND_ERR_MASK, ~0ull); | |
10281 | write_csr(dd, SEND_EGRESS_ERR_MASK, ~0ull); | |
10282 | ||
10283 | /* enable all per-context and per-SDMA engine errors */ | |
10284 | for (i = 0; i < dd->chip_send_contexts; i++) | |
10285 | write_kctxt_csr(dd, i, SEND_CTXT_ERR_MASK, ~0ull); | |
10286 | for (i = 0; i < dd->chip_sdma_engines; i++) | |
10287 | write_kctxt_csr(dd, i, SEND_DMA_ENG_ERR_MASK, ~0ull); | |
10288 | ||
10289 | /* set the local CU to AU mapping */ | |
10290 | assign_local_cm_au_table(dd, dd->vcu); | |
10291 | ||
10292 | /* | |
10293 | * Set reasonable default for Credit Return Timer | |
10294 | * Don't set on Simulator - causes it to choke. | |
10295 | */ | |
10296 | if (dd->icode != ICODE_FUNCTIONAL_SIMULATOR) | |
10297 | write_csr(dd, SEND_CM_TIMER_CTRL, HFI1_CREDIT_RETURN_RATE); | |
10298 | } | |
10299 | ||
10300 | int hfi1_set_ctxt_jkey(struct hfi1_devdata *dd, unsigned ctxt, u16 jkey) | |
10301 | { | |
10302 | struct hfi1_ctxtdata *rcd = dd->rcd[ctxt]; | |
10303 | unsigned sctxt; | |
10304 | int ret = 0; | |
10305 | u64 reg; | |
10306 | ||
10307 | if (!rcd || !rcd->sc) { | |
10308 | ret = -EINVAL; | |
10309 | goto done; | |
10310 | } | |
10311 | sctxt = rcd->sc->hw_context; | |
10312 | reg = SEND_CTXT_CHECK_JOB_KEY_MASK_SMASK | /* mask is always 1's */ | |
10313 | ((jkey & SEND_CTXT_CHECK_JOB_KEY_VALUE_MASK) << | |
10314 | SEND_CTXT_CHECK_JOB_KEY_VALUE_SHIFT); | |
10315 | /* JOB_KEY_ALLOW_PERMISSIVE is not allowed by default */ | |
10316 | if (HFI1_CAP_KGET_MASK(rcd->flags, ALLOW_PERM_JKEY)) | |
10317 | reg |= SEND_CTXT_CHECK_JOB_KEY_ALLOW_PERMISSIVE_SMASK; | |
10318 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_JOB_KEY, reg); | |
10319 | /* | |
10320 | * Enable send-side J_KEY integrity check, unless this is A0 h/w | |
10321 | * (due to A0 erratum). | |
10322 | */ | |
995deafa | 10323 | if (!is_ax(dd)) { |
77241056 MM |
10324 | reg = read_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE); |
10325 | reg |= SEND_CTXT_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; | |
10326 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE, reg); | |
10327 | } | |
10328 | ||
10329 | /* Enable J_KEY check on receive context. */ | |
10330 | reg = RCV_KEY_CTRL_JOB_KEY_ENABLE_SMASK | | |
10331 | ((jkey & RCV_KEY_CTRL_JOB_KEY_VALUE_MASK) << | |
10332 | RCV_KEY_CTRL_JOB_KEY_VALUE_SHIFT); | |
10333 | write_kctxt_csr(dd, ctxt, RCV_KEY_CTRL, reg); | |
10334 | done: | |
10335 | return ret; | |
10336 | } | |
10337 | ||
10338 | int hfi1_clear_ctxt_jkey(struct hfi1_devdata *dd, unsigned ctxt) | |
10339 | { | |
10340 | struct hfi1_ctxtdata *rcd = dd->rcd[ctxt]; | |
10341 | unsigned sctxt; | |
10342 | int ret = 0; | |
10343 | u64 reg; | |
10344 | ||
10345 | if (!rcd || !rcd->sc) { | |
10346 | ret = -EINVAL; | |
10347 | goto done; | |
10348 | } | |
10349 | sctxt = rcd->sc->hw_context; | |
10350 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_JOB_KEY, 0); | |
10351 | /* | |
10352 | * Disable send-side J_KEY integrity check, unless this is A0 h/w. | |
10353 | * This check would not have been enabled for A0 h/w, see | |
10354 | * set_ctxt_jkey(). | |
10355 | */ | |
995deafa | 10356 | if (!is_ax(dd)) { |
77241056 MM |
10357 | reg = read_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE); |
10358 | reg &= ~SEND_CTXT_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; | |
10359 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE, reg); | |
10360 | } | |
10361 | /* Turn off the J_KEY on the receive side */ | |
10362 | write_kctxt_csr(dd, ctxt, RCV_KEY_CTRL, 0); | |
10363 | done: | |
10364 | return ret; | |
10365 | } | |
10366 | ||
10367 | int hfi1_set_ctxt_pkey(struct hfi1_devdata *dd, unsigned ctxt, u16 pkey) | |
10368 | { | |
10369 | struct hfi1_ctxtdata *rcd; | |
10370 | unsigned sctxt; | |
10371 | int ret = 0; | |
10372 | u64 reg; | |
10373 | ||
10374 | if (ctxt < dd->num_rcv_contexts) | |
10375 | rcd = dd->rcd[ctxt]; | |
10376 | else { | |
10377 | ret = -EINVAL; | |
10378 | goto done; | |
10379 | } | |
10380 | if (!rcd || !rcd->sc) { | |
10381 | ret = -EINVAL; | |
10382 | goto done; | |
10383 | } | |
10384 | sctxt = rcd->sc->hw_context; | |
10385 | reg = ((u64)pkey & SEND_CTXT_CHECK_PARTITION_KEY_VALUE_MASK) << | |
10386 | SEND_CTXT_CHECK_PARTITION_KEY_VALUE_SHIFT; | |
10387 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_PARTITION_KEY, reg); | |
10388 | reg = read_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE); | |
10389 | reg |= SEND_CTXT_CHECK_ENABLE_CHECK_PARTITION_KEY_SMASK; | |
10390 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE, reg); | |
10391 | done: | |
10392 | return ret; | |
10393 | } | |
10394 | ||
10395 | int hfi1_clear_ctxt_pkey(struct hfi1_devdata *dd, unsigned ctxt) | |
10396 | { | |
10397 | struct hfi1_ctxtdata *rcd; | |
10398 | unsigned sctxt; | |
10399 | int ret = 0; | |
10400 | u64 reg; | |
10401 | ||
10402 | if (ctxt < dd->num_rcv_contexts) | |
10403 | rcd = dd->rcd[ctxt]; | |
10404 | else { | |
10405 | ret = -EINVAL; | |
10406 | goto done; | |
10407 | } | |
10408 | if (!rcd || !rcd->sc) { | |
10409 | ret = -EINVAL; | |
10410 | goto done; | |
10411 | } | |
10412 | sctxt = rcd->sc->hw_context; | |
10413 | reg = read_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE); | |
10414 | reg &= ~SEND_CTXT_CHECK_ENABLE_CHECK_PARTITION_KEY_SMASK; | |
10415 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_ENABLE, reg); | |
10416 | write_kctxt_csr(dd, sctxt, SEND_CTXT_CHECK_PARTITION_KEY, 0); | |
10417 | done: | |
10418 | return ret; | |
10419 | } | |
10420 | ||
10421 | /* | |
10422 | * Start doing the clean up the the chip. Our clean up happens in multiple | |
10423 | * stages and this is just the first. | |
10424 | */ | |
10425 | void hfi1_start_cleanup(struct hfi1_devdata *dd) | |
10426 | { | |
10427 | free_cntrs(dd); | |
10428 | free_rcverr(dd); | |
10429 | clean_up_interrupts(dd); | |
10430 | } | |
10431 | ||
10432 | #define HFI_BASE_GUID(dev) \ | |
10433 | ((dev)->base_guid & ~(1ULL << GUID_HFI_INDEX_SHIFT)) | |
10434 | ||
10435 | /* | |
10436 | * Certain chip functions need to be initialized only once per asic | |
10437 | * instead of per-device. This function finds the peer device and | |
10438 | * checks whether that chip initialization needs to be done by this | |
10439 | * device. | |
10440 | */ | |
10441 | static void asic_should_init(struct hfi1_devdata *dd) | |
10442 | { | |
10443 | unsigned long flags; | |
10444 | struct hfi1_devdata *tmp, *peer = NULL; | |
10445 | ||
10446 | spin_lock_irqsave(&hfi1_devs_lock, flags); | |
10447 | /* Find our peer device */ | |
10448 | list_for_each_entry(tmp, &hfi1_dev_list, list) { | |
10449 | if ((HFI_BASE_GUID(dd) == HFI_BASE_GUID(tmp)) && | |
10450 | dd->unit != tmp->unit) { | |
10451 | peer = tmp; | |
10452 | break; | |
10453 | } | |
10454 | } | |
10455 | ||
10456 | /* | |
10457 | * "Claim" the ASIC for initialization if it hasn't been | |
10458 | " "claimed" yet. | |
10459 | */ | |
10460 | if (!peer || !(peer->flags & HFI1_DO_INIT_ASIC)) | |
10461 | dd->flags |= HFI1_DO_INIT_ASIC; | |
10462 | spin_unlock_irqrestore(&hfi1_devs_lock, flags); | |
10463 | } | |
10464 | ||
5d9157aa DL |
10465 | /* |
10466 | * Set dd->boardname. Use a generic name if a name is not returned from | |
10467 | * EFI variable space. | |
10468 | * | |
10469 | * Return 0 on success, -ENOMEM if space could not be allocated. | |
10470 | */ | |
10471 | static int obtain_boardname(struct hfi1_devdata *dd) | |
10472 | { | |
10473 | /* generic board description */ | |
10474 | const char generic[] = | |
10475 | "Intel Omni-Path Host Fabric Interface Adapter 100 Series"; | |
10476 | unsigned long size; | |
10477 | int ret; | |
10478 | ||
10479 | ret = read_hfi1_efi_var(dd, "description", &size, | |
10480 | (void **)&dd->boardname); | |
10481 | if (ret) { | |
10482 | dd_dev_err(dd, "Board description not found\n"); | |
10483 | /* use generic description */ | |
10484 | dd->boardname = kstrdup(generic, GFP_KERNEL); | |
10485 | if (!dd->boardname) | |
10486 | return -ENOMEM; | |
10487 | } | |
10488 | return 0; | |
10489 | } | |
10490 | ||
77241056 | 10491 | /** |
7c03ed85 | 10492 | * Allocate and initialize the device structure for the hfi. |
77241056 MM |
10493 | * @dev: the pci_dev for hfi1_ib device |
10494 | * @ent: pci_device_id struct for this dev | |
10495 | * | |
10496 | * Also allocates, initializes, and returns the devdata struct for this | |
10497 | * device instance | |
10498 | * | |
10499 | * This is global, and is called directly at init to set up the | |
10500 | * chip-specific function pointers for later use. | |
10501 | */ | |
10502 | struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev, | |
10503 | const struct pci_device_id *ent) | |
10504 | { | |
10505 | struct hfi1_devdata *dd; | |
10506 | struct hfi1_pportdata *ppd; | |
10507 | u64 reg; | |
10508 | int i, ret; | |
10509 | static const char * const inames[] = { /* implementation names */ | |
10510 | "RTL silicon", | |
10511 | "RTL VCS simulation", | |
10512 | "RTL FPGA emulation", | |
10513 | "Functional simulator" | |
10514 | }; | |
10515 | ||
10516 | dd = hfi1_alloc_devdata(pdev, | |
10517 | NUM_IB_PORTS * sizeof(struct hfi1_pportdata)); | |
10518 | if (IS_ERR(dd)) | |
10519 | goto bail; | |
10520 | ppd = dd->pport; | |
10521 | for (i = 0; i < dd->num_pports; i++, ppd++) { | |
10522 | int vl; | |
10523 | /* init common fields */ | |
10524 | hfi1_init_pportdata(pdev, ppd, dd, 0, 1); | |
10525 | /* DC supports 4 link widths */ | |
10526 | ppd->link_width_supported = | |
10527 | OPA_LINK_WIDTH_1X | OPA_LINK_WIDTH_2X | | |
10528 | OPA_LINK_WIDTH_3X | OPA_LINK_WIDTH_4X; | |
10529 | ppd->link_width_downgrade_supported = | |
10530 | ppd->link_width_supported; | |
10531 | /* start out enabling only 4X */ | |
10532 | ppd->link_width_enabled = OPA_LINK_WIDTH_4X; | |
10533 | ppd->link_width_downgrade_enabled = | |
10534 | ppd->link_width_downgrade_supported; | |
10535 | /* link width active is 0 when link is down */ | |
10536 | /* link width downgrade active is 0 when link is down */ | |
10537 | ||
10538 | if (num_vls < HFI1_MIN_VLS_SUPPORTED | |
10539 | || num_vls > HFI1_MAX_VLS_SUPPORTED) { | |
10540 | hfi1_early_err(&pdev->dev, | |
10541 | "Invalid num_vls %u, using %u VLs\n", | |
10542 | num_vls, HFI1_MAX_VLS_SUPPORTED); | |
10543 | num_vls = HFI1_MAX_VLS_SUPPORTED; | |
10544 | } | |
10545 | ppd->vls_supported = num_vls; | |
10546 | ppd->vls_operational = ppd->vls_supported; | |
10547 | /* Set the default MTU. */ | |
10548 | for (vl = 0; vl < num_vls; vl++) | |
10549 | dd->vld[vl].mtu = hfi1_max_mtu; | |
10550 | dd->vld[15].mtu = MAX_MAD_PACKET; | |
10551 | /* | |
10552 | * Set the initial values to reasonable default, will be set | |
10553 | * for real when link is up. | |
10554 | */ | |
10555 | ppd->lstate = IB_PORT_DOWN; | |
10556 | ppd->overrun_threshold = 0x4; | |
10557 | ppd->phy_error_threshold = 0xf; | |
10558 | ppd->port_crc_mode_enabled = link_crc_mask; | |
10559 | /* initialize supported LTP CRC mode */ | |
10560 | ppd->port_ltp_crc_mode = cap_to_port_ltp(link_crc_mask) << 8; | |
10561 | /* initialize enabled LTP CRC mode */ | |
10562 | ppd->port_ltp_crc_mode |= cap_to_port_ltp(link_crc_mask) << 4; | |
10563 | /* start in offline */ | |
10564 | ppd->host_link_state = HLS_DN_OFFLINE; | |
10565 | init_vl_arb_caches(ppd); | |
10566 | } | |
10567 | ||
10568 | dd->link_default = HLS_DN_POLL; | |
10569 | ||
10570 | /* | |
10571 | * Do remaining PCIe setup and save PCIe values in dd. | |
10572 | * Any error printing is already done by the init code. | |
10573 | * On return, we have the chip mapped. | |
10574 | */ | |
10575 | ret = hfi1_pcie_ddinit(dd, pdev, ent); | |
10576 | if (ret < 0) | |
10577 | goto bail_free; | |
10578 | ||
10579 | /* verify that reads actually work, save revision for reset check */ | |
10580 | dd->revision = read_csr(dd, CCE_REVISION); | |
10581 | if (dd->revision == ~(u64)0) { | |
10582 | dd_dev_err(dd, "cannot read chip CSRs\n"); | |
10583 | ret = -EINVAL; | |
10584 | goto bail_cleanup; | |
10585 | } | |
10586 | dd->majrev = (dd->revision >> CCE_REVISION_CHIP_REV_MAJOR_SHIFT) | |
10587 | & CCE_REVISION_CHIP_REV_MAJOR_MASK; | |
10588 | dd->minrev = (dd->revision >> CCE_REVISION_CHIP_REV_MINOR_SHIFT) | |
10589 | & CCE_REVISION_CHIP_REV_MINOR_MASK; | |
10590 | ||
10591 | /* obtain the hardware ID - NOT related to unit, which is a | |
10592 | software enumeration */ | |
10593 | reg = read_csr(dd, CCE_REVISION2); | |
10594 | dd->hfi1_id = (reg >> CCE_REVISION2_HFI_ID_SHIFT) | |
10595 | & CCE_REVISION2_HFI_ID_MASK; | |
10596 | /* the variable size will remove unwanted bits */ | |
10597 | dd->icode = reg >> CCE_REVISION2_IMPL_CODE_SHIFT; | |
10598 | dd->irev = reg >> CCE_REVISION2_IMPL_REVISION_SHIFT; | |
10599 | dd_dev_info(dd, "Implementation: %s, revision 0x%x\n", | |
10600 | dd->icode < ARRAY_SIZE(inames) ? inames[dd->icode] : "unknown", | |
10601 | (int)dd->irev); | |
10602 | ||
10603 | /* speeds the hardware can support */ | |
10604 | dd->pport->link_speed_supported = OPA_LINK_SPEED_25G; | |
10605 | /* speeds allowed to run at */ | |
10606 | dd->pport->link_speed_enabled = dd->pport->link_speed_supported; | |
10607 | /* give a reasonable active value, will be set on link up */ | |
10608 | dd->pport->link_speed_active = OPA_LINK_SPEED_25G; | |
10609 | ||
10610 | dd->chip_rcv_contexts = read_csr(dd, RCV_CONTEXTS); | |
10611 | dd->chip_send_contexts = read_csr(dd, SEND_CONTEXTS); | |
10612 | dd->chip_sdma_engines = read_csr(dd, SEND_DMA_ENGINES); | |
10613 | dd->chip_pio_mem_size = read_csr(dd, SEND_PIO_MEM_SIZE); | |
10614 | dd->chip_sdma_mem_size = read_csr(dd, SEND_DMA_MEM_SIZE); | |
10615 | /* fix up link widths for emulation _p */ | |
10616 | ppd = dd->pport; | |
10617 | if (dd->icode == ICODE_FPGA_EMULATION && is_emulator_p(dd)) { | |
10618 | ppd->link_width_supported = | |
10619 | ppd->link_width_enabled = | |
10620 | ppd->link_width_downgrade_supported = | |
10621 | ppd->link_width_downgrade_enabled = | |
10622 | OPA_LINK_WIDTH_1X; | |
10623 | } | |
10624 | /* insure num_vls isn't larger than number of sdma engines */ | |
10625 | if (HFI1_CAP_IS_KSET(SDMA) && num_vls > dd->chip_sdma_engines) { | |
10626 | dd_dev_err(dd, "num_vls %u too large, using %u VLs\n", | |
10627 | num_vls, HFI1_MAX_VLS_SUPPORTED); | |
10628 | ppd->vls_supported = num_vls = HFI1_MAX_VLS_SUPPORTED; | |
10629 | ppd->vls_operational = ppd->vls_supported; | |
10630 | } | |
10631 | ||
10632 | /* | |
10633 | * Convert the ns parameter to the 64 * cclocks used in the CSR. | |
10634 | * Limit the max if larger than the field holds. If timeout is | |
10635 | * non-zero, then the calculated field will be at least 1. | |
10636 | * | |
10637 | * Must be after icode is set up - the cclock rate depends | |
10638 | * on knowing the hardware being used. | |
10639 | */ | |
10640 | dd->rcv_intr_timeout_csr = ns_to_cclock(dd, rcv_intr_timeout) / 64; | |
10641 | if (dd->rcv_intr_timeout_csr > | |
10642 | RCV_AVAIL_TIME_OUT_TIME_OUT_RELOAD_MASK) | |
10643 | dd->rcv_intr_timeout_csr = | |
10644 | RCV_AVAIL_TIME_OUT_TIME_OUT_RELOAD_MASK; | |
10645 | else if (dd->rcv_intr_timeout_csr == 0 && rcv_intr_timeout) | |
10646 | dd->rcv_intr_timeout_csr = 1; | |
10647 | ||
7c03ed85 EH |
10648 | /* needs to be done before we look for the peer device */ |
10649 | read_guid(dd); | |
10650 | ||
10651 | /* should this device init the ASIC block? */ | |
10652 | asic_should_init(dd); | |
10653 | ||
77241056 MM |
10654 | /* obtain chip sizes, reset chip CSRs */ |
10655 | init_chip(dd); | |
10656 | ||
10657 | /* read in the PCIe link speed information */ | |
10658 | ret = pcie_speeds(dd); | |
10659 | if (ret) | |
10660 | goto bail_cleanup; | |
10661 | ||
77241056 MM |
10662 | /* read in firmware */ |
10663 | ret = hfi1_firmware_init(dd); | |
10664 | if (ret) | |
10665 | goto bail_cleanup; | |
10666 | ||
10667 | /* | |
10668 | * In general, the PCIe Gen3 transition must occur after the | |
10669 | * chip has been idled (so it won't initiate any PCIe transactions | |
10670 | * e.g. an interrupt) and before the driver changes any registers | |
10671 | * (the transition will reset the registers). | |
10672 | * | |
10673 | * In particular, place this call after: | |
10674 | * - init_chip() - the chip will not initiate any PCIe transactions | |
10675 | * - pcie_speeds() - reads the current link speed | |
10676 | * - hfi1_firmware_init() - the needed firmware is ready to be | |
10677 | * downloaded | |
10678 | */ | |
10679 | ret = do_pcie_gen3_transition(dd); | |
10680 | if (ret) | |
10681 | goto bail_cleanup; | |
10682 | ||
10683 | /* start setting dd values and adjusting CSRs */ | |
10684 | init_early_variables(dd); | |
10685 | ||
10686 | parse_platform_config(dd); | |
10687 | ||
5d9157aa DL |
10688 | ret = obtain_boardname(dd); |
10689 | if (ret) | |
77241056 | 10690 | goto bail_cleanup; |
77241056 MM |
10691 | |
10692 | snprintf(dd->boardversion, BOARD_VERS_MAX, | |
5d9157aa | 10693 | "ChipABI %u.%u, ChipRev %u.%u, SW Compat %llu\n", |
77241056 | 10694 | HFI1_CHIP_VERS_MAJ, HFI1_CHIP_VERS_MIN, |
77241056 MM |
10695 | (u32)dd->majrev, |
10696 | (u32)dd->minrev, | |
10697 | (dd->revision >> CCE_REVISION_SW_SHIFT) | |
10698 | & CCE_REVISION_SW_MASK); | |
10699 | ||
10700 | ret = set_up_context_variables(dd); | |
10701 | if (ret) | |
10702 | goto bail_cleanup; | |
10703 | ||
10704 | /* set initial RXE CSRs */ | |
10705 | init_rxe(dd); | |
10706 | /* set initial TXE CSRs */ | |
10707 | init_txe(dd); | |
10708 | /* set initial non-RXE, non-TXE CSRs */ | |
10709 | init_other(dd); | |
10710 | /* set up KDETH QP prefix in both RX and TX CSRs */ | |
10711 | init_kdeth_qp(dd); | |
10712 | ||
10713 | /* send contexts must be set up before receive contexts */ | |
10714 | ret = init_send_contexts(dd); | |
10715 | if (ret) | |
10716 | goto bail_cleanup; | |
10717 | ||
10718 | ret = hfi1_create_ctxts(dd); | |
10719 | if (ret) | |
10720 | goto bail_cleanup; | |
10721 | ||
10722 | dd->rcvhdrsize = DEFAULT_RCVHDRSIZE; | |
10723 | /* | |
10724 | * rcd[0] is guaranteed to be valid by this point. Also, all | |
10725 | * context are using the same value, as per the module parameter. | |
10726 | */ | |
10727 | dd->rhf_offset = dd->rcd[0]->rcvhdrqentsize - sizeof(u64) / sizeof(u32); | |
10728 | ||
10729 | ret = init_pervl_scs(dd); | |
10730 | if (ret) | |
10731 | goto bail_cleanup; | |
10732 | ||
10733 | /* sdma init */ | |
10734 | for (i = 0; i < dd->num_pports; ++i) { | |
10735 | ret = sdma_init(dd, i); | |
10736 | if (ret) | |
10737 | goto bail_cleanup; | |
10738 | } | |
10739 | ||
10740 | /* use contexts created by hfi1_create_ctxts */ | |
10741 | ret = set_up_interrupts(dd); | |
10742 | if (ret) | |
10743 | goto bail_cleanup; | |
10744 | ||
10745 | /* set up LCB access - must be after set_up_interrupts() */ | |
10746 | init_lcb_access(dd); | |
10747 | ||
10748 | snprintf(dd->serial, SERIAL_MAX, "0x%08llx\n", | |
10749 | dd->base_guid & 0xFFFFFF); | |
10750 | ||
10751 | dd->oui1 = dd->base_guid >> 56 & 0xFF; | |
10752 | dd->oui2 = dd->base_guid >> 48 & 0xFF; | |
10753 | dd->oui3 = dd->base_guid >> 40 & 0xFF; | |
10754 | ||
10755 | ret = load_firmware(dd); /* asymmetric with dispose_firmware() */ | |
10756 | if (ret) | |
10757 | goto bail_clear_intr; | |
10758 | check_fabric_firmware_versions(dd); | |
10759 | ||
10760 | thermal_init(dd); | |
10761 | ||
10762 | ret = init_cntrs(dd); | |
10763 | if (ret) | |
10764 | goto bail_clear_intr; | |
10765 | ||
10766 | ret = init_rcverr(dd); | |
10767 | if (ret) | |
10768 | goto bail_free_cntrs; | |
10769 | ||
10770 | ret = eprom_init(dd); | |
10771 | if (ret) | |
10772 | goto bail_free_rcverr; | |
10773 | ||
10774 | goto bail; | |
10775 | ||
10776 | bail_free_rcverr: | |
10777 | free_rcverr(dd); | |
10778 | bail_free_cntrs: | |
10779 | free_cntrs(dd); | |
10780 | bail_clear_intr: | |
10781 | clean_up_interrupts(dd); | |
10782 | bail_cleanup: | |
10783 | hfi1_pcie_ddcleanup(dd); | |
10784 | bail_free: | |
10785 | hfi1_free_devdata(dd); | |
10786 | dd = ERR_PTR(ret); | |
10787 | bail: | |
10788 | return dd; | |
10789 | } | |
10790 | ||
10791 | static u16 delay_cycles(struct hfi1_pportdata *ppd, u32 desired_egress_rate, | |
10792 | u32 dw_len) | |
10793 | { | |
10794 | u32 delta_cycles; | |
10795 | u32 current_egress_rate = ppd->current_egress_rate; | |
10796 | /* rates here are in units of 10^6 bits/sec */ | |
10797 | ||
10798 | if (desired_egress_rate == -1) | |
10799 | return 0; /* shouldn't happen */ | |
10800 | ||
10801 | if (desired_egress_rate >= current_egress_rate) | |
10802 | return 0; /* we can't help go faster, only slower */ | |
10803 | ||
10804 | delta_cycles = egress_cycles(dw_len * 4, desired_egress_rate) - | |
10805 | egress_cycles(dw_len * 4, current_egress_rate); | |
10806 | ||
10807 | return (u16)delta_cycles; | |
10808 | } | |
10809 | ||
10810 | ||
10811 | /** | |
10812 | * create_pbc - build a pbc for transmission | |
10813 | * @flags: special case flags or-ed in built pbc | |
10814 | * @srate: static rate | |
10815 | * @vl: vl | |
10816 | * @dwlen: dword length (header words + data words + pbc words) | |
10817 | * | |
10818 | * Create a PBC with the given flags, rate, VL, and length. | |
10819 | * | |
10820 | * NOTE: The PBC created will not insert any HCRC - all callers but one are | |
10821 | * for verbs, which does not use this PSM feature. The lone other caller | |
10822 | * is for the diagnostic interface which calls this if the user does not | |
10823 | * supply their own PBC. | |
10824 | */ | |
10825 | u64 create_pbc(struct hfi1_pportdata *ppd, u64 flags, int srate_mbs, u32 vl, | |
10826 | u32 dw_len) | |
10827 | { | |
10828 | u64 pbc, delay = 0; | |
10829 | ||
10830 | if (unlikely(srate_mbs)) | |
10831 | delay = delay_cycles(ppd, srate_mbs, dw_len); | |
10832 | ||
10833 | pbc = flags | |
10834 | | (delay << PBC_STATIC_RATE_CONTROL_COUNT_SHIFT) | |
10835 | | ((u64)PBC_IHCRC_NONE << PBC_INSERT_HCRC_SHIFT) | |
10836 | | (vl & PBC_VL_MASK) << PBC_VL_SHIFT | |
10837 | | (dw_len & PBC_LENGTH_DWS_MASK) | |
10838 | << PBC_LENGTH_DWS_SHIFT; | |
10839 | ||
10840 | return pbc; | |
10841 | } | |
10842 | ||
10843 | #define SBUS_THERMAL 0x4f | |
10844 | #define SBUS_THERM_MONITOR_MODE 0x1 | |
10845 | ||
10846 | #define THERM_FAILURE(dev, ret, reason) \ | |
10847 | dd_dev_err((dd), \ | |
10848 | "Thermal sensor initialization failed: %s (%d)\n", \ | |
10849 | (reason), (ret)) | |
10850 | ||
10851 | /* | |
10852 | * Initialize the Avago Thermal sensor. | |
10853 | * | |
10854 | * After initialization, enable polling of thermal sensor through | |
10855 | * SBus interface. In order for this to work, the SBus Master | |
10856 | * firmware has to be loaded due to the fact that the HW polling | |
10857 | * logic uses SBus interrupts, which are not supported with | |
10858 | * default firmware. Otherwise, no data will be returned through | |
10859 | * the ASIC_STS_THERM CSR. | |
10860 | */ | |
10861 | static int thermal_init(struct hfi1_devdata *dd) | |
10862 | { | |
10863 | int ret = 0; | |
10864 | ||
10865 | if (dd->icode != ICODE_RTL_SILICON || | |
10866 | !(dd->flags & HFI1_DO_INIT_ASIC)) | |
10867 | return ret; | |
10868 | ||
10869 | acquire_hw_mutex(dd); | |
10870 | dd_dev_info(dd, "Initializing thermal sensor\n"); | |
4ef98989 JAQ |
10871 | /* Disable polling of thermal readings */ |
10872 | write_csr(dd, ASIC_CFG_THERM_POLL_EN, 0x0); | |
10873 | msleep(100); | |
77241056 MM |
10874 | /* Thermal Sensor Initialization */ |
10875 | /* Step 1: Reset the Thermal SBus Receiver */ | |
10876 | ret = sbus_request_slow(dd, SBUS_THERMAL, 0x0, | |
10877 | RESET_SBUS_RECEIVER, 0); | |
10878 | if (ret) { | |
10879 | THERM_FAILURE(dd, ret, "Bus Reset"); | |
10880 | goto done; | |
10881 | } | |
10882 | /* Step 2: Set Reset bit in Thermal block */ | |
10883 | ret = sbus_request_slow(dd, SBUS_THERMAL, 0x0, | |
10884 | WRITE_SBUS_RECEIVER, 0x1); | |
10885 | if (ret) { | |
10886 | THERM_FAILURE(dd, ret, "Therm Block Reset"); | |
10887 | goto done; | |
10888 | } | |
10889 | /* Step 3: Write clock divider value (100MHz -> 2MHz) */ | |
10890 | ret = sbus_request_slow(dd, SBUS_THERMAL, 0x1, | |
10891 | WRITE_SBUS_RECEIVER, 0x32); | |
10892 | if (ret) { | |
10893 | THERM_FAILURE(dd, ret, "Write Clock Div"); | |
10894 | goto done; | |
10895 | } | |
10896 | /* Step 4: Select temperature mode */ | |
10897 | ret = sbus_request_slow(dd, SBUS_THERMAL, 0x3, | |
10898 | WRITE_SBUS_RECEIVER, | |
10899 | SBUS_THERM_MONITOR_MODE); | |
10900 | if (ret) { | |
10901 | THERM_FAILURE(dd, ret, "Write Mode Sel"); | |
10902 | goto done; | |
10903 | } | |
10904 | /* Step 5: De-assert block reset and start conversion */ | |
10905 | ret = sbus_request_slow(dd, SBUS_THERMAL, 0x0, | |
10906 | WRITE_SBUS_RECEIVER, 0x2); | |
10907 | if (ret) { | |
10908 | THERM_FAILURE(dd, ret, "Write Reset Deassert"); | |
10909 | goto done; | |
10910 | } | |
10911 | /* Step 5.1: Wait for first conversion (21.5ms per spec) */ | |
10912 | msleep(22); | |
10913 | ||
10914 | /* Enable polling of thermal readings */ | |
10915 | write_csr(dd, ASIC_CFG_THERM_POLL_EN, 0x1); | |
10916 | done: | |
10917 | release_hw_mutex(dd); | |
10918 | return ret; | |
10919 | } | |
10920 | ||
10921 | static void handle_temp_err(struct hfi1_devdata *dd) | |
10922 | { | |
10923 | struct hfi1_pportdata *ppd = &dd->pport[0]; | |
10924 | /* | |
10925 | * Thermal Critical Interrupt | |
10926 | * Put the device into forced freeze mode, take link down to | |
10927 | * offline, and put DC into reset. | |
10928 | */ | |
10929 | dd_dev_emerg(dd, | |
10930 | "Critical temperature reached! Forcing device into freeze mode!\n"); | |
10931 | dd->flags |= HFI1_FORCED_FREEZE; | |
10932 | start_freeze_handling(ppd, FREEZE_SELF|FREEZE_ABORT); | |
10933 | /* | |
10934 | * Shut DC down as much and as quickly as possible. | |
10935 | * | |
10936 | * Step 1: Take the link down to OFFLINE. This will cause the | |
10937 | * 8051 to put the Serdes in reset. However, we don't want to | |
10938 | * go through the entire link state machine since we want to | |
10939 | * shutdown ASAP. Furthermore, this is not a graceful shutdown | |
10940 | * but rather an attempt to save the chip. | |
10941 | * Code below is almost the same as quiet_serdes() but avoids | |
10942 | * all the extra work and the sleeps. | |
10943 | */ | |
10944 | ppd->driver_link_ready = 0; | |
10945 | ppd->link_enabled = 0; | |
10946 | set_physical_link_state(dd, PLS_OFFLINE | | |
10947 | (OPA_LINKDOWN_REASON_SMA_DISABLED << 8)); | |
10948 | /* | |
10949 | * Step 2: Shutdown LCB and 8051 | |
10950 | * After shutdown, do not restore DC_CFG_RESET value. | |
10951 | */ | |
10952 | dc_shutdown(dd); | |
10953 | } |