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scsi: hisi_sas: tidy channel interrupt handler for v3 hw
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / hisi_sas / hisi_sas_v3_hw.c
1 /*
2 * Copyright (c) 2017 Hisilicon Limited.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 */
10
11 #include "hisi_sas.h"
12 #define DRV_NAME "hisi_sas_v3_hw"
13
14 /* global registers need init*/
15 #define DLVRY_QUEUE_ENABLE 0x0
16 #define IOST_BASE_ADDR_LO 0x8
17 #define IOST_BASE_ADDR_HI 0xc
18 #define ITCT_BASE_ADDR_LO 0x10
19 #define ITCT_BASE_ADDR_HI 0x14
20 #define IO_BROKEN_MSG_ADDR_LO 0x18
21 #define IO_BROKEN_MSG_ADDR_HI 0x1c
22 #define PHY_CONTEXT 0x20
23 #define PHY_STATE 0x24
24 #define PHY_PORT_NUM_MA 0x28
25 #define PHY_CONN_RATE 0x30
26 #define ITCT_CLR 0x44
27 #define ITCT_CLR_EN_OFF 16
28 #define ITCT_CLR_EN_MSK (0x1 << ITCT_CLR_EN_OFF)
29 #define ITCT_DEV_OFF 0
30 #define ITCT_DEV_MSK (0x7ff << ITCT_DEV_OFF)
31 #define IO_SATA_BROKEN_MSG_ADDR_LO 0x58
32 #define IO_SATA_BROKEN_MSG_ADDR_HI 0x5c
33 #define SATA_INITI_D2H_STORE_ADDR_LO 0x60
34 #define SATA_INITI_D2H_STORE_ADDR_HI 0x64
35 #define CFG_MAX_TAG 0x68
36 #define HGC_SAS_TX_OPEN_FAIL_RETRY_CTRL 0x84
37 #define HGC_SAS_TXFAIL_RETRY_CTRL 0x88
38 #define HGC_GET_ITV_TIME 0x90
39 #define DEVICE_MSG_WORK_MODE 0x94
40 #define OPENA_WT_CONTI_TIME 0x9c
41 #define I_T_NEXUS_LOSS_TIME 0xa0
42 #define MAX_CON_TIME_LIMIT_TIME 0xa4
43 #define BUS_INACTIVE_LIMIT_TIME 0xa8
44 #define REJECT_TO_OPEN_LIMIT_TIME 0xac
45 #define CFG_AGING_TIME 0xbc
46 #define HGC_DFX_CFG2 0xc0
47 #define CFG_ABT_SET_QUERY_IPTT 0xd4
48 #define CFG_SET_ABORTED_IPTT_OFF 0
49 #define CFG_SET_ABORTED_IPTT_MSK (0xfff << CFG_SET_ABORTED_IPTT_OFF)
50 #define CFG_SET_ABORTED_EN_OFF 12
51 #define CFG_ABT_SET_IPTT_DONE 0xd8
52 #define CFG_ABT_SET_IPTT_DONE_OFF 0
53 #define HGC_IOMB_PROC1_STATUS 0x104
54 #define CHNL_INT_STATUS 0x148
55 #define HGC_AXI_FIFO_ERR_INFO 0x154
56 #define AXI_ERR_INFO_OFF 0
57 #define AXI_ERR_INFO_MSK (0xff << AXI_ERR_INFO_OFF)
58 #define FIFO_ERR_INFO_OFF 8
59 #define FIFO_ERR_INFO_MSK (0xff << FIFO_ERR_INFO_OFF)
60 #define INT_COAL_EN 0x19c
61 #define OQ_INT_COAL_TIME 0x1a0
62 #define OQ_INT_COAL_CNT 0x1a4
63 #define ENT_INT_COAL_TIME 0x1a8
64 #define ENT_INT_COAL_CNT 0x1ac
65 #define OQ_INT_SRC 0x1b0
66 #define OQ_INT_SRC_MSK 0x1b4
67 #define ENT_INT_SRC1 0x1b8
68 #define ENT_INT_SRC1_D2H_FIS_CH0_OFF 0
69 #define ENT_INT_SRC1_D2H_FIS_CH0_MSK (0x1 << ENT_INT_SRC1_D2H_FIS_CH0_OFF)
70 #define ENT_INT_SRC1_D2H_FIS_CH1_OFF 8
71 #define ENT_INT_SRC1_D2H_FIS_CH1_MSK (0x1 << ENT_INT_SRC1_D2H_FIS_CH1_OFF)
72 #define ENT_INT_SRC2 0x1bc
73 #define ENT_INT_SRC3 0x1c0
74 #define ENT_INT_SRC3_WP_DEPTH_OFF 8
75 #define ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF 9
76 #define ENT_INT_SRC3_RP_DEPTH_OFF 10
77 #define ENT_INT_SRC3_AXI_OFF 11
78 #define ENT_INT_SRC3_FIFO_OFF 12
79 #define ENT_INT_SRC3_LM_OFF 14
80 #define ENT_INT_SRC3_ITC_INT_OFF 15
81 #define ENT_INT_SRC3_ITC_INT_MSK (0x1 << ENT_INT_SRC3_ITC_INT_OFF)
82 #define ENT_INT_SRC3_ABT_OFF 16
83 #define ENT_INT_SRC_MSK1 0x1c4
84 #define ENT_INT_SRC_MSK2 0x1c8
85 #define ENT_INT_SRC_MSK3 0x1cc
86 #define ENT_INT_SRC_MSK3_ENT95_MSK_OFF 31
87 #define CHNL_PHYUPDOWN_INT_MSK 0x1d0
88 #define CHNL_ENT_INT_MSK 0x1d4
89 #define HGC_COM_INT_MSK 0x1d8
90 #define ENT_INT_SRC_MSK3_ENT95_MSK_MSK (0x1 << ENT_INT_SRC_MSK3_ENT95_MSK_OFF)
91 #define SAS_ECC_INTR 0x1e8
92 #define SAS_ECC_INTR_MSK 0x1ec
93 #define HGC_ERR_STAT_EN 0x238
94 #define CQE_SEND_CNT 0x248
95 #define DLVRY_Q_0_BASE_ADDR_LO 0x260
96 #define DLVRY_Q_0_BASE_ADDR_HI 0x264
97 #define DLVRY_Q_0_DEPTH 0x268
98 #define DLVRY_Q_0_WR_PTR 0x26c
99 #define DLVRY_Q_0_RD_PTR 0x270
100 #define HYPER_STREAM_ID_EN_CFG 0xc80
101 #define OQ0_INT_SRC_MSK 0xc90
102 #define COMPL_Q_0_BASE_ADDR_LO 0x4e0
103 #define COMPL_Q_0_BASE_ADDR_HI 0x4e4
104 #define COMPL_Q_0_DEPTH 0x4e8
105 #define COMPL_Q_0_WR_PTR 0x4ec
106 #define COMPL_Q_0_RD_PTR 0x4f0
107 #define AWQOS_AWCACHE_CFG 0xc84
108 #define ARQOS_ARCACHE_CFG 0xc88
109 #define HILINK_ERR_DFX 0xe04
110 #define SAS_GPIO_CFG_0 0x1000
111 #define SAS_GPIO_CFG_1 0x1004
112 #define SAS_GPIO_TX_0_1 0x1040
113 #define SAS_CFG_DRIVE_VLD 0x1070
114
115 /* phy registers requiring init */
116 #define PORT_BASE (0x2000)
117 #define PHY_CFG (PORT_BASE + 0x0)
118 #define HARD_PHY_LINKRATE (PORT_BASE + 0x4)
119 #define PHY_CFG_ENA_OFF 0
120 #define PHY_CFG_ENA_MSK (0x1 << PHY_CFG_ENA_OFF)
121 #define PHY_CFG_DC_OPT_OFF 2
122 #define PHY_CFG_DC_OPT_MSK (0x1 << PHY_CFG_DC_OPT_OFF)
123 #define PROG_PHY_LINK_RATE (PORT_BASE + 0x8)
124 #define PHY_CTRL (PORT_BASE + 0x14)
125 #define PHY_CTRL_RESET_OFF 0
126 #define PHY_CTRL_RESET_MSK (0x1 << PHY_CTRL_RESET_OFF)
127 #define SL_CFG (PORT_BASE + 0x84)
128 #define SL_CONTROL (PORT_BASE + 0x94)
129 #define SL_CONTROL_NOTIFY_EN_OFF 0
130 #define SL_CONTROL_NOTIFY_EN_MSK (0x1 << SL_CONTROL_NOTIFY_EN_OFF)
131 #define SL_CTA_OFF 17
132 #define SL_CTA_MSK (0x1 << SL_CTA_OFF)
133 #define RX_PRIMS_STATUS (PORT_BASE + 0x98)
134 #define RX_BCAST_CHG_OFF 1
135 #define RX_BCAST_CHG_MSK (0x1 << RX_BCAST_CHG_OFF)
136 #define TX_ID_DWORD0 (PORT_BASE + 0x9c)
137 #define TX_ID_DWORD1 (PORT_BASE + 0xa0)
138 #define TX_ID_DWORD2 (PORT_BASE + 0xa4)
139 #define TX_ID_DWORD3 (PORT_BASE + 0xa8)
140 #define TX_ID_DWORD4 (PORT_BASE + 0xaC)
141 #define TX_ID_DWORD5 (PORT_BASE + 0xb0)
142 #define TX_ID_DWORD6 (PORT_BASE + 0xb4)
143 #define TXID_AUTO (PORT_BASE + 0xb8)
144 #define CT3_OFF 1
145 #define CT3_MSK (0x1 << CT3_OFF)
146 #define TX_HARDRST_OFF 2
147 #define TX_HARDRST_MSK (0x1 << TX_HARDRST_OFF)
148 #define RX_IDAF_DWORD0 (PORT_BASE + 0xc4)
149 #define RXOP_CHECK_CFG_H (PORT_BASE + 0xfc)
150 #define STP_LINK_TIMER (PORT_BASE + 0x120)
151 #define STP_LINK_TIMEOUT_STATE (PORT_BASE + 0x124)
152 #define CON_CFG_DRIVER (PORT_BASE + 0x130)
153 #define SAS_SSP_CON_TIMER_CFG (PORT_BASE + 0x134)
154 #define SAS_SMP_CON_TIMER_CFG (PORT_BASE + 0x138)
155 #define SAS_STP_CON_TIMER_CFG (PORT_BASE + 0x13c)
156 #define CHL_INT0 (PORT_BASE + 0x1b4)
157 #define CHL_INT0_HOTPLUG_TOUT_OFF 0
158 #define CHL_INT0_HOTPLUG_TOUT_MSK (0x1 << CHL_INT0_HOTPLUG_TOUT_OFF)
159 #define CHL_INT0_SL_RX_BCST_ACK_OFF 1
160 #define CHL_INT0_SL_RX_BCST_ACK_MSK (0x1 << CHL_INT0_SL_RX_BCST_ACK_OFF)
161 #define CHL_INT0_SL_PHY_ENABLE_OFF 2
162 #define CHL_INT0_SL_PHY_ENABLE_MSK (0x1 << CHL_INT0_SL_PHY_ENABLE_OFF)
163 #define CHL_INT0_NOT_RDY_OFF 4
164 #define CHL_INT0_NOT_RDY_MSK (0x1 << CHL_INT0_NOT_RDY_OFF)
165 #define CHL_INT0_PHY_RDY_OFF 5
166 #define CHL_INT0_PHY_RDY_MSK (0x1 << CHL_INT0_PHY_RDY_OFF)
167 #define CHL_INT1 (PORT_BASE + 0x1b8)
168 #define CHL_INT1_DMAC_TX_ECC_ERR_OFF 15
169 #define CHL_INT1_DMAC_TX_ECC_ERR_MSK (0x1 << CHL_INT1_DMAC_TX_ECC_ERR_OFF)
170 #define CHL_INT1_DMAC_RX_ECC_ERR_OFF 17
171 #define CHL_INT1_DMAC_RX_ECC_ERR_MSK (0x1 << CHL_INT1_DMAC_RX_ECC_ERR_OFF)
172 #define CHL_INT1_DMAC_TX_AXI_WR_ERR_OFF 19
173 #define CHL_INT1_DMAC_TX_AXI_RD_ERR_OFF 20
174 #define CHL_INT1_DMAC_RX_AXI_WR_ERR_OFF 21
175 #define CHL_INT1_DMAC_RX_AXI_RD_ERR_OFF 22
176 #define CHL_INT2 (PORT_BASE + 0x1bc)
177 #define CHL_INT2_SL_IDAF_TOUT_CONF_OFF 0
178 #define CHL_INT2_RX_INVLD_DW_OFF 30
179 #define CHL_INT2_STP_LINK_TIMEOUT_OFF 31
180 #define CHL_INT0_MSK (PORT_BASE + 0x1c0)
181 #define CHL_INT1_MSK (PORT_BASE + 0x1c4)
182 #define CHL_INT2_MSK (PORT_BASE + 0x1c8)
183 #define CHL_INT_COAL_EN (PORT_BASE + 0x1d0)
184 #define SAS_RX_TRAIN_TIMER (PORT_BASE + 0x2a4)
185 #define PHY_CTRL_RDY_MSK (PORT_BASE + 0x2b0)
186 #define PHYCTRL_NOT_RDY_MSK (PORT_BASE + 0x2b4)
187 #define PHYCTRL_DWS_RESET_MSK (PORT_BASE + 0x2b8)
188 #define PHYCTRL_PHY_ENA_MSK (PORT_BASE + 0x2bc)
189 #define SL_RX_BCAST_CHK_MSK (PORT_BASE + 0x2c0)
190 #define PHYCTRL_OOB_RESTART_MSK (PORT_BASE + 0x2c4)
191 #define DMA_TX_STATUS (PORT_BASE + 0x2d0)
192 #define DMA_TX_STATUS_BUSY_OFF 0
193 #define DMA_TX_STATUS_BUSY_MSK (0x1 << DMA_TX_STATUS_BUSY_OFF)
194 #define DMA_RX_STATUS (PORT_BASE + 0x2e8)
195 #define DMA_RX_STATUS_BUSY_OFF 0
196 #define DMA_RX_STATUS_BUSY_MSK (0x1 << DMA_RX_STATUS_BUSY_OFF)
197
198 #define COARSETUNE_TIME (PORT_BASE + 0x304)
199 #define ERR_CNT_DWS_LOST (PORT_BASE + 0x380)
200 #define ERR_CNT_RESET_PROB (PORT_BASE + 0x384)
201 #define ERR_CNT_INVLD_DW (PORT_BASE + 0x390)
202 #define ERR_CNT_DISP_ERR (PORT_BASE + 0x398)
203
204 #define DEFAULT_ITCT_HW 2048 /* reset value, not reprogrammed */
205 #if (HISI_SAS_MAX_DEVICES > DEFAULT_ITCT_HW)
206 #error Max ITCT exceeded
207 #endif
208
209 #define AXI_MASTER_CFG_BASE (0x5000)
210 #define AM_CTRL_GLOBAL (0x0)
211 #define AM_CURR_TRANS_RETURN (0x150)
212
213 #define AM_CFG_MAX_TRANS (0x5010)
214 #define AM_CFG_SINGLE_PORT_MAX_TRANS (0x5014)
215 #define AXI_CFG (0x5100)
216 #define AM_ROB_ECC_ERR_ADDR (0x510c)
217 #define AM_ROB_ECC_ONEBIT_ERR_ADDR_OFF 0
218 #define AM_ROB_ECC_ONEBIT_ERR_ADDR_MSK (0xff << AM_ROB_ECC_ONEBIT_ERR_ADDR_OFF)
219 #define AM_ROB_ECC_MULBIT_ERR_ADDR_OFF 8
220 #define AM_ROB_ECC_MULBIT_ERR_ADDR_MSK (0xff << AM_ROB_ECC_MULBIT_ERR_ADDR_OFF)
221
222 /* RAS registers need init */
223 #define RAS_BASE (0x6000)
224 #define SAS_RAS_INTR0 (RAS_BASE)
225 #define SAS_RAS_INTR1 (RAS_BASE + 0x04)
226 #define SAS_RAS_INTR0_MASK (RAS_BASE + 0x08)
227 #define SAS_RAS_INTR1_MASK (RAS_BASE + 0x0c)
228 #define CFG_SAS_RAS_INTR_MASK (RAS_BASE + 0x1c)
229 #define SAS_RAS_INTR2 (RAS_BASE + 0x20)
230 #define SAS_RAS_INTR2_MASK (RAS_BASE + 0x24)
231
232 /* HW dma structures */
233 /* Delivery queue header */
234 /* dw0 */
235 #define CMD_HDR_ABORT_FLAG_OFF 0
236 #define CMD_HDR_ABORT_FLAG_MSK (0x3 << CMD_HDR_ABORT_FLAG_OFF)
237 #define CMD_HDR_ABORT_DEVICE_TYPE_OFF 2
238 #define CMD_HDR_ABORT_DEVICE_TYPE_MSK (0x1 << CMD_HDR_ABORT_DEVICE_TYPE_OFF)
239 #define CMD_HDR_RESP_REPORT_OFF 5
240 #define CMD_HDR_RESP_REPORT_MSK (0x1 << CMD_HDR_RESP_REPORT_OFF)
241 #define CMD_HDR_TLR_CTRL_OFF 6
242 #define CMD_HDR_TLR_CTRL_MSK (0x3 << CMD_HDR_TLR_CTRL_OFF)
243 #define CMD_HDR_PORT_OFF 18
244 #define CMD_HDR_PORT_MSK (0xf << CMD_HDR_PORT_OFF)
245 #define CMD_HDR_PRIORITY_OFF 27
246 #define CMD_HDR_PRIORITY_MSK (0x1 << CMD_HDR_PRIORITY_OFF)
247 #define CMD_HDR_CMD_OFF 29
248 #define CMD_HDR_CMD_MSK (0x7 << CMD_HDR_CMD_OFF)
249 /* dw1 */
250 #define CMD_HDR_UNCON_CMD_OFF 3
251 #define CMD_HDR_DIR_OFF 5
252 #define CMD_HDR_DIR_MSK (0x3 << CMD_HDR_DIR_OFF)
253 #define CMD_HDR_RESET_OFF 7
254 #define CMD_HDR_RESET_MSK (0x1 << CMD_HDR_RESET_OFF)
255 #define CMD_HDR_VDTL_OFF 10
256 #define CMD_HDR_VDTL_MSK (0x1 << CMD_HDR_VDTL_OFF)
257 #define CMD_HDR_FRAME_TYPE_OFF 11
258 #define CMD_HDR_FRAME_TYPE_MSK (0x1f << CMD_HDR_FRAME_TYPE_OFF)
259 #define CMD_HDR_DEV_ID_OFF 16
260 #define CMD_HDR_DEV_ID_MSK (0xffff << CMD_HDR_DEV_ID_OFF)
261 /* dw2 */
262 #define CMD_HDR_CFL_OFF 0
263 #define CMD_HDR_CFL_MSK (0x1ff << CMD_HDR_CFL_OFF)
264 #define CMD_HDR_NCQ_TAG_OFF 10
265 #define CMD_HDR_NCQ_TAG_MSK (0x1f << CMD_HDR_NCQ_TAG_OFF)
266 #define CMD_HDR_MRFL_OFF 15
267 #define CMD_HDR_MRFL_MSK (0x1ff << CMD_HDR_MRFL_OFF)
268 #define CMD_HDR_SG_MOD_OFF 24
269 #define CMD_HDR_SG_MOD_MSK (0x3 << CMD_HDR_SG_MOD_OFF)
270 /* dw3 */
271 #define CMD_HDR_IPTT_OFF 0
272 #define CMD_HDR_IPTT_MSK (0xffff << CMD_HDR_IPTT_OFF)
273 /* dw6 */
274 #define CMD_HDR_DIF_SGL_LEN_OFF 0
275 #define CMD_HDR_DIF_SGL_LEN_MSK (0xffff << CMD_HDR_DIF_SGL_LEN_OFF)
276 #define CMD_HDR_DATA_SGL_LEN_OFF 16
277 #define CMD_HDR_DATA_SGL_LEN_MSK (0xffff << CMD_HDR_DATA_SGL_LEN_OFF)
278 /* dw7 */
279 #define CMD_HDR_ADDR_MODE_SEL_OFF 15
280 #define CMD_HDR_ADDR_MODE_SEL_MSK (1 << CMD_HDR_ADDR_MODE_SEL_OFF)
281 #define CMD_HDR_ABORT_IPTT_OFF 16
282 #define CMD_HDR_ABORT_IPTT_MSK (0xffff << CMD_HDR_ABORT_IPTT_OFF)
283
284 /* Completion header */
285 /* dw0 */
286 #define CMPLT_HDR_CMPLT_OFF 0
287 #define CMPLT_HDR_CMPLT_MSK (0x3 << CMPLT_HDR_CMPLT_OFF)
288 #define CMPLT_HDR_ERROR_PHASE_OFF 2
289 #define CMPLT_HDR_ERROR_PHASE_MSK (0xff << CMPLT_HDR_ERROR_PHASE_OFF)
290 #define CMPLT_HDR_RSPNS_XFRD_OFF 10
291 #define CMPLT_HDR_RSPNS_XFRD_MSK (0x1 << CMPLT_HDR_RSPNS_XFRD_OFF)
292 #define CMPLT_HDR_ERX_OFF 12
293 #define CMPLT_HDR_ERX_MSK (0x1 << CMPLT_HDR_ERX_OFF)
294 #define CMPLT_HDR_ABORT_STAT_OFF 13
295 #define CMPLT_HDR_ABORT_STAT_MSK (0x7 << CMPLT_HDR_ABORT_STAT_OFF)
296 /* abort_stat */
297 #define STAT_IO_NOT_VALID 0x1
298 #define STAT_IO_NO_DEVICE 0x2
299 #define STAT_IO_COMPLETE 0x3
300 #define STAT_IO_ABORTED 0x4
301 /* dw1 */
302 #define CMPLT_HDR_IPTT_OFF 0
303 #define CMPLT_HDR_IPTT_MSK (0xffff << CMPLT_HDR_IPTT_OFF)
304 #define CMPLT_HDR_DEV_ID_OFF 16
305 #define CMPLT_HDR_DEV_ID_MSK (0xffff << CMPLT_HDR_DEV_ID_OFF)
306 /* dw3 */
307 #define CMPLT_HDR_IO_IN_TARGET_OFF 17
308 #define CMPLT_HDR_IO_IN_TARGET_MSK (0x1 << CMPLT_HDR_IO_IN_TARGET_OFF)
309
310 /* ITCT header */
311 /* qw0 */
312 #define ITCT_HDR_DEV_TYPE_OFF 0
313 #define ITCT_HDR_DEV_TYPE_MSK (0x3 << ITCT_HDR_DEV_TYPE_OFF)
314 #define ITCT_HDR_VALID_OFF 2
315 #define ITCT_HDR_VALID_MSK (0x1 << ITCT_HDR_VALID_OFF)
316 #define ITCT_HDR_MCR_OFF 5
317 #define ITCT_HDR_MCR_MSK (0xf << ITCT_HDR_MCR_OFF)
318 #define ITCT_HDR_VLN_OFF 9
319 #define ITCT_HDR_VLN_MSK (0xf << ITCT_HDR_VLN_OFF)
320 #define ITCT_HDR_SMP_TIMEOUT_OFF 16
321 #define ITCT_HDR_AWT_CONTINUE_OFF 25
322 #define ITCT_HDR_PORT_ID_OFF 28
323 #define ITCT_HDR_PORT_ID_MSK (0xf << ITCT_HDR_PORT_ID_OFF)
324 /* qw2 */
325 #define ITCT_HDR_INLT_OFF 0
326 #define ITCT_HDR_INLT_MSK (0xffffULL << ITCT_HDR_INLT_OFF)
327 #define ITCT_HDR_RTOLT_OFF 48
328 #define ITCT_HDR_RTOLT_MSK (0xffffULL << ITCT_HDR_RTOLT_OFF)
329
330 struct hisi_sas_complete_v3_hdr {
331 __le32 dw0;
332 __le32 dw1;
333 __le32 act;
334 __le32 dw3;
335 };
336
337 struct hisi_sas_err_record_v3 {
338 /* dw0 */
339 __le32 trans_tx_fail_type;
340
341 /* dw1 */
342 __le32 trans_rx_fail_type;
343
344 /* dw2 */
345 __le16 dma_tx_err_type;
346 __le16 sipc_rx_err_type;
347
348 /* dw3 */
349 __le32 dma_rx_err_type;
350 };
351
352 #define RX_DATA_LEN_UNDERFLOW_OFF 6
353 #define RX_DATA_LEN_UNDERFLOW_MSK (1 << RX_DATA_LEN_UNDERFLOW_OFF)
354
355 #define HISI_SAS_COMMAND_ENTRIES_V3_HW 4096
356 #define HISI_SAS_MSI_COUNT_V3_HW 32
357
358 #define DIR_NO_DATA 0
359 #define DIR_TO_INI 1
360 #define DIR_TO_DEVICE 2
361 #define DIR_RESERVED 3
362
363 #define FIS_CMD_IS_UNCONSTRAINED(fis) \
364 ((fis.command == ATA_CMD_READ_LOG_EXT) || \
365 (fis.command == ATA_CMD_READ_LOG_DMA_EXT) || \
366 ((fis.command == ATA_CMD_DEV_RESET) && \
367 ((fis.control & ATA_SRST) != 0)))
368
369 static u32 hisi_sas_read32(struct hisi_hba *hisi_hba, u32 off)
370 {
371 void __iomem *regs = hisi_hba->regs + off;
372
373 return readl(regs);
374 }
375
376 static u32 hisi_sas_read32_relaxed(struct hisi_hba *hisi_hba, u32 off)
377 {
378 void __iomem *regs = hisi_hba->regs + off;
379
380 return readl_relaxed(regs);
381 }
382
383 static void hisi_sas_write32(struct hisi_hba *hisi_hba, u32 off, u32 val)
384 {
385 void __iomem *regs = hisi_hba->regs + off;
386
387 writel(val, regs);
388 }
389
390 static void hisi_sas_phy_write32(struct hisi_hba *hisi_hba, int phy_no,
391 u32 off, u32 val)
392 {
393 void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;
394
395 writel(val, regs);
396 }
397
398 static u32 hisi_sas_phy_read32(struct hisi_hba *hisi_hba,
399 int phy_no, u32 off)
400 {
401 void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;
402
403 return readl(regs);
404 }
405
406 #define hisi_sas_read32_poll_timeout(off, val, cond, delay_us, \
407 timeout_us) \
408 ({ \
409 void __iomem *regs = hisi_hba->regs + off; \
410 readl_poll_timeout(regs, val, cond, delay_us, timeout_us); \
411 })
412
413 #define hisi_sas_read32_poll_timeout_atomic(off, val, cond, delay_us, \
414 timeout_us) \
415 ({ \
416 void __iomem *regs = hisi_hba->regs + off; \
417 readl_poll_timeout_atomic(regs, val, cond, delay_us, timeout_us);\
418 })
419
420 static void init_reg_v3_hw(struct hisi_hba *hisi_hba)
421 {
422 struct pci_dev *pdev = hisi_hba->pci_dev;
423 int i;
424
425 /* Global registers init */
426 hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE,
427 (u32)((1ULL << hisi_hba->queue_count) - 1));
428 hisi_sas_write32(hisi_hba, CFG_MAX_TAG, 0xfff0400);
429 hisi_sas_write32(hisi_hba, HGC_SAS_TXFAIL_RETRY_CTRL, 0x108);
430 hisi_sas_write32(hisi_hba, INT_COAL_EN, 0x1);
431 hisi_sas_write32(hisi_hba, OQ_INT_COAL_TIME, 0x1);
432 hisi_sas_write32(hisi_hba, OQ_INT_COAL_CNT, 0x1);
433 hisi_sas_write32(hisi_hba, OQ_INT_SRC, 0xffff);
434 hisi_sas_write32(hisi_hba, ENT_INT_SRC1, 0xffffffff);
435 hisi_sas_write32(hisi_hba, ENT_INT_SRC2, 0xffffffff);
436 hisi_sas_write32(hisi_hba, ENT_INT_SRC3, 0xffffffff);
437 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0xfefefefe);
438 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0xfefefefe);
439 if (pdev->revision >= 0x21)
440 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0xffff7fff);
441 else
442 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0xfffe20ff);
443 hisi_sas_write32(hisi_hba, CHNL_PHYUPDOWN_INT_MSK, 0x0);
444 hisi_sas_write32(hisi_hba, CHNL_ENT_INT_MSK, 0x0);
445 hisi_sas_write32(hisi_hba, HGC_COM_INT_MSK, 0x0);
446 hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0x0);
447 hisi_sas_write32(hisi_hba, AWQOS_AWCACHE_CFG, 0xf0f0);
448 hisi_sas_write32(hisi_hba, ARQOS_ARCACHE_CFG, 0xf0f0);
449 for (i = 0; i < hisi_hba->queue_count; i++)
450 hisi_sas_write32(hisi_hba, OQ0_INT_SRC_MSK+0x4*i, 0);
451
452 hisi_sas_write32(hisi_hba, HYPER_STREAM_ID_EN_CFG, 1);
453
454 for (i = 0; i < hisi_hba->n_phy; i++) {
455 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
456 struct asd_sas_phy *sas_phy = &phy->sas_phy;
457 u32 prog_phy_link_rate = 0x800;
458
459 if (!sas_phy->phy || (sas_phy->phy->maximum_linkrate <
460 SAS_LINK_RATE_1_5_GBPS)) {
461 prog_phy_link_rate = 0x855;
462 } else {
463 enum sas_linkrate max = sas_phy->phy->maximum_linkrate;
464
465 prog_phy_link_rate =
466 hisi_sas_get_prog_phy_linkrate_mask(max) |
467 0x800;
468 }
469 hisi_sas_phy_write32(hisi_hba, i, PROG_PHY_LINK_RATE,
470 prog_phy_link_rate);
471 hisi_sas_phy_write32(hisi_hba, i, SAS_RX_TRAIN_TIMER, 0x13e80);
472 hisi_sas_phy_write32(hisi_hba, i, CHL_INT0, 0xffffffff);
473 hisi_sas_phy_write32(hisi_hba, i, CHL_INT1, 0xffffffff);
474 hisi_sas_phy_write32(hisi_hba, i, CHL_INT2, 0xffffffff);
475 hisi_sas_phy_write32(hisi_hba, i, RXOP_CHECK_CFG_H, 0x1000);
476 if (pdev->revision >= 0x21)
477 hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK,
478 0xffffffff);
479 else
480 hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK,
481 0xff87ffff);
482 hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0xffffbfe);
483 hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL_RDY_MSK, 0x0);
484 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_NOT_RDY_MSK, 0x0);
485 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_DWS_RESET_MSK, 0x0);
486 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_PHY_ENA_MSK, 0x0);
487 hisi_sas_phy_write32(hisi_hba, i, SL_RX_BCAST_CHK_MSK, 0x0);
488 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_OOB_RESTART_MSK, 0x1);
489 hisi_sas_phy_write32(hisi_hba, i, STP_LINK_TIMER, 0x7f7a120);
490 hisi_sas_phy_write32(hisi_hba, i, CON_CFG_DRIVER, 0x2a0a01);
491
492 /* used for 12G negotiate */
493 hisi_sas_phy_write32(hisi_hba, i, COARSETUNE_TIME, 0x1e);
494 }
495
496 for (i = 0; i < hisi_hba->queue_count; i++) {
497 /* Delivery queue */
498 hisi_sas_write32(hisi_hba,
499 DLVRY_Q_0_BASE_ADDR_HI + (i * 0x14),
500 upper_32_bits(hisi_hba->cmd_hdr_dma[i]));
501
502 hisi_sas_write32(hisi_hba, DLVRY_Q_0_BASE_ADDR_LO + (i * 0x14),
503 lower_32_bits(hisi_hba->cmd_hdr_dma[i]));
504
505 hisi_sas_write32(hisi_hba, DLVRY_Q_0_DEPTH + (i * 0x14),
506 HISI_SAS_QUEUE_SLOTS);
507
508 /* Completion queue */
509 hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_HI + (i * 0x14),
510 upper_32_bits(hisi_hba->complete_hdr_dma[i]));
511
512 hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_LO + (i * 0x14),
513 lower_32_bits(hisi_hba->complete_hdr_dma[i]));
514
515 hisi_sas_write32(hisi_hba, COMPL_Q_0_DEPTH + (i * 0x14),
516 HISI_SAS_QUEUE_SLOTS);
517 }
518
519 /* itct */
520 hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_LO,
521 lower_32_bits(hisi_hba->itct_dma));
522
523 hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_HI,
524 upper_32_bits(hisi_hba->itct_dma));
525
526 /* iost */
527 hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_LO,
528 lower_32_bits(hisi_hba->iost_dma));
529
530 hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_HI,
531 upper_32_bits(hisi_hba->iost_dma));
532
533 /* breakpoint */
534 hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_LO,
535 lower_32_bits(hisi_hba->breakpoint_dma));
536
537 hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_HI,
538 upper_32_bits(hisi_hba->breakpoint_dma));
539
540 /* SATA broken msg */
541 hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_LO,
542 lower_32_bits(hisi_hba->sata_breakpoint_dma));
543
544 hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_HI,
545 upper_32_bits(hisi_hba->sata_breakpoint_dma));
546
547 /* SATA initial fis */
548 hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_LO,
549 lower_32_bits(hisi_hba->initial_fis_dma));
550
551 hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_HI,
552 upper_32_bits(hisi_hba->initial_fis_dma));
553
554 /* RAS registers init */
555 hisi_sas_write32(hisi_hba, SAS_RAS_INTR0_MASK, 0x0);
556 hisi_sas_write32(hisi_hba, SAS_RAS_INTR1_MASK, 0x0);
557 hisi_sas_write32(hisi_hba, SAS_RAS_INTR2_MASK, 0x0);
558 hisi_sas_write32(hisi_hba, CFG_SAS_RAS_INTR_MASK, 0x0);
559
560 /* LED registers init */
561 hisi_sas_write32(hisi_hba, SAS_CFG_DRIVE_VLD, 0x80000ff);
562 hisi_sas_write32(hisi_hba, SAS_GPIO_TX_0_1, 0x80808080);
563 hisi_sas_write32(hisi_hba, SAS_GPIO_TX_0_1 + 0x4, 0x80808080);
564 /* Configure blink generator rate A to 1Hz and B to 4Hz */
565 hisi_sas_write32(hisi_hba, SAS_GPIO_CFG_1, 0x121700);
566 hisi_sas_write32(hisi_hba, SAS_GPIO_CFG_0, 0x800000);
567 }
568
569 static void config_phy_opt_mode_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
570 {
571 u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);
572
573 cfg &= ~PHY_CFG_DC_OPT_MSK;
574 cfg |= 1 << PHY_CFG_DC_OPT_OFF;
575 hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
576 }
577
578 static void config_id_frame_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
579 {
580 struct sas_identify_frame identify_frame;
581 u32 *identify_buffer;
582
583 memset(&identify_frame, 0, sizeof(identify_frame));
584 identify_frame.dev_type = SAS_END_DEVICE;
585 identify_frame.frame_type = 0;
586 identify_frame._un1 = 1;
587 identify_frame.initiator_bits = SAS_PROTOCOL_ALL;
588 identify_frame.target_bits = SAS_PROTOCOL_NONE;
589 memcpy(&identify_frame._un4_11[0], hisi_hba->sas_addr, SAS_ADDR_SIZE);
590 memcpy(&identify_frame.sas_addr[0], hisi_hba->sas_addr, SAS_ADDR_SIZE);
591 identify_frame.phy_id = phy_no;
592 identify_buffer = (u32 *)(&identify_frame);
593
594 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD0,
595 __swab32(identify_buffer[0]));
596 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD1,
597 __swab32(identify_buffer[1]));
598 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD2,
599 __swab32(identify_buffer[2]));
600 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD3,
601 __swab32(identify_buffer[3]));
602 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD4,
603 __swab32(identify_buffer[4]));
604 hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD5,
605 __swab32(identify_buffer[5]));
606 }
607
608 static void setup_itct_v3_hw(struct hisi_hba *hisi_hba,
609 struct hisi_sas_device *sas_dev)
610 {
611 struct domain_device *device = sas_dev->sas_device;
612 struct device *dev = hisi_hba->dev;
613 u64 qw0, device_id = sas_dev->device_id;
614 struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
615 struct domain_device *parent_dev = device->parent;
616 struct asd_sas_port *sas_port = device->port;
617 struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
618
619 memset(itct, 0, sizeof(*itct));
620
621 /* qw0 */
622 qw0 = 0;
623 switch (sas_dev->dev_type) {
624 case SAS_END_DEVICE:
625 case SAS_EDGE_EXPANDER_DEVICE:
626 case SAS_FANOUT_EXPANDER_DEVICE:
627 qw0 = HISI_SAS_DEV_TYPE_SSP << ITCT_HDR_DEV_TYPE_OFF;
628 break;
629 case SAS_SATA_DEV:
630 case SAS_SATA_PENDING:
631 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
632 qw0 = HISI_SAS_DEV_TYPE_STP << ITCT_HDR_DEV_TYPE_OFF;
633 else
634 qw0 = HISI_SAS_DEV_TYPE_SATA << ITCT_HDR_DEV_TYPE_OFF;
635 break;
636 default:
637 dev_warn(dev, "setup itct: unsupported dev type (%d)\n",
638 sas_dev->dev_type);
639 }
640
641 qw0 |= ((1 << ITCT_HDR_VALID_OFF) |
642 (device->linkrate << ITCT_HDR_MCR_OFF) |
643 (1 << ITCT_HDR_VLN_OFF) |
644 (0xfa << ITCT_HDR_SMP_TIMEOUT_OFF) |
645 (1 << ITCT_HDR_AWT_CONTINUE_OFF) |
646 (port->id << ITCT_HDR_PORT_ID_OFF));
647 itct->qw0 = cpu_to_le64(qw0);
648
649 /* qw1 */
650 memcpy(&itct->sas_addr, device->sas_addr, SAS_ADDR_SIZE);
651 itct->sas_addr = __swab64(itct->sas_addr);
652
653 /* qw2 */
654 if (!dev_is_sata(device))
655 itct->qw2 = cpu_to_le64((5000ULL << ITCT_HDR_INLT_OFF) |
656 (0x1ULL << ITCT_HDR_RTOLT_OFF));
657 }
658
659 static void clear_itct_v3_hw(struct hisi_hba *hisi_hba,
660 struct hisi_sas_device *sas_dev)
661 {
662 DECLARE_COMPLETION_ONSTACK(completion);
663 u64 dev_id = sas_dev->device_id;
664 struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id];
665 u32 reg_val = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
666
667 sas_dev->completion = &completion;
668
669 /* clear the itct interrupt state */
670 if (ENT_INT_SRC3_ITC_INT_MSK & reg_val)
671 hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
672 ENT_INT_SRC3_ITC_INT_MSK);
673
674 /* clear the itct table*/
675 reg_val = ITCT_CLR_EN_MSK | (dev_id & ITCT_DEV_MSK);
676 hisi_sas_write32(hisi_hba, ITCT_CLR, reg_val);
677
678 wait_for_completion(sas_dev->completion);
679 memset(itct, 0, sizeof(struct hisi_sas_itct));
680 }
681
682 static void dereg_device_v3_hw(struct hisi_hba *hisi_hba,
683 struct domain_device *device)
684 {
685 struct hisi_sas_slot *slot, *slot2;
686 struct hisi_sas_device *sas_dev = device->lldd_dev;
687 u32 cfg_abt_set_query_iptt;
688
689 cfg_abt_set_query_iptt = hisi_sas_read32(hisi_hba,
690 CFG_ABT_SET_QUERY_IPTT);
691 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) {
692 cfg_abt_set_query_iptt &= ~CFG_SET_ABORTED_IPTT_MSK;
693 cfg_abt_set_query_iptt |= (1 << CFG_SET_ABORTED_EN_OFF) |
694 (slot->idx << CFG_SET_ABORTED_IPTT_OFF);
695 hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
696 cfg_abt_set_query_iptt);
697 }
698 cfg_abt_set_query_iptt &= ~(1 << CFG_SET_ABORTED_EN_OFF);
699 hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
700 cfg_abt_set_query_iptt);
701 hisi_sas_write32(hisi_hba, CFG_ABT_SET_IPTT_DONE,
702 1 << CFG_ABT_SET_IPTT_DONE_OFF);
703 }
704
705 static int reset_hw_v3_hw(struct hisi_hba *hisi_hba)
706 {
707 struct device *dev = hisi_hba->dev;
708 int ret;
709 u32 val;
710
711 hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0);
712
713 /* Disable all of the PHYs */
714 hisi_sas_stop_phys(hisi_hba);
715 udelay(50);
716
717 /* Ensure axi bus idle */
718 ret = hisi_sas_read32_poll_timeout(AXI_CFG, val, !val,
719 20000, 1000000);
720 if (ret) {
721 dev_err(dev, "axi bus is not idle, ret = %d!\n", ret);
722 return -EIO;
723 }
724
725 if (ACPI_HANDLE(dev)) {
726 acpi_status s;
727
728 s = acpi_evaluate_object(ACPI_HANDLE(dev), "_RST", NULL, NULL);
729 if (ACPI_FAILURE(s)) {
730 dev_err(dev, "Reset failed\n");
731 return -EIO;
732 }
733 } else {
734 dev_err(dev, "no reset method!\n");
735 return -EINVAL;
736 }
737
738 return 0;
739 }
740
741 static int hw_init_v3_hw(struct hisi_hba *hisi_hba)
742 {
743 struct device *dev = hisi_hba->dev;
744 int rc;
745
746 rc = reset_hw_v3_hw(hisi_hba);
747 if (rc) {
748 dev_err(dev, "hisi_sas_reset_hw failed, rc=%d", rc);
749 return rc;
750 }
751
752 msleep(100);
753 init_reg_v3_hw(hisi_hba);
754
755 return 0;
756 }
757
758 static void enable_phy_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
759 {
760 u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);
761
762 cfg |= PHY_CFG_ENA_MSK;
763 hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
764 }
765
766 static void disable_phy_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
767 {
768 u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);
769
770 cfg &= ~PHY_CFG_ENA_MSK;
771 hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
772 }
773
774 static void start_phy_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
775 {
776 config_id_frame_v3_hw(hisi_hba, phy_no);
777 config_phy_opt_mode_v3_hw(hisi_hba, phy_no);
778 enable_phy_v3_hw(hisi_hba, phy_no);
779 }
780
781 static void phy_hard_reset_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
782 {
783 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
784 u32 txid_auto;
785
786 disable_phy_v3_hw(hisi_hba, phy_no);
787 if (phy->identify.device_type == SAS_END_DEVICE) {
788 txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);
789 hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
790 txid_auto | TX_HARDRST_MSK);
791 }
792 msleep(100);
793 start_phy_v3_hw(hisi_hba, phy_no);
794 }
795
796 static enum sas_linkrate phy_get_max_linkrate_v3_hw(void)
797 {
798 return SAS_LINK_RATE_12_0_GBPS;
799 }
800
801 static void phys_init_v3_hw(struct hisi_hba *hisi_hba)
802 {
803 int i;
804
805 for (i = 0; i < hisi_hba->n_phy; i++) {
806 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
807 struct asd_sas_phy *sas_phy = &phy->sas_phy;
808
809 if (!sas_phy->phy->enabled)
810 continue;
811
812 start_phy_v3_hw(hisi_hba, i);
813 }
814 }
815
816 static void sl_notify_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
817 {
818 u32 sl_control;
819
820 sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
821 sl_control |= SL_CONTROL_NOTIFY_EN_MSK;
822 hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
823 msleep(1);
824 sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
825 sl_control &= ~SL_CONTROL_NOTIFY_EN_MSK;
826 hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
827 }
828
829 static int get_wideport_bitmap_v3_hw(struct hisi_hba *hisi_hba, int port_id)
830 {
831 int i, bitmap = 0;
832 u32 phy_port_num_ma = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
833 u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
834
835 for (i = 0; i < hisi_hba->n_phy; i++)
836 if (phy_state & BIT(i))
837 if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id)
838 bitmap |= BIT(i);
839
840 return bitmap;
841 }
842
843 /**
844 * The callpath to this function and upto writing the write
845 * queue pointer should be safe from interruption.
846 */
847 static int
848 get_free_slot_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq)
849 {
850 struct device *dev = hisi_hba->dev;
851 int queue = dq->id;
852 u32 r, w;
853
854 w = dq->wr_point;
855 r = hisi_sas_read32_relaxed(hisi_hba,
856 DLVRY_Q_0_RD_PTR + (queue * 0x14));
857 if (r == (w+1) % HISI_SAS_QUEUE_SLOTS) {
858 dev_warn(dev, "full queue=%d r=%d w=%d\n",
859 queue, r, w);
860 return -EAGAIN;
861 }
862
863 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
864
865 return w;
866 }
867
868 static void start_delivery_v3_hw(struct hisi_sas_dq *dq)
869 {
870 struct hisi_hba *hisi_hba = dq->hisi_hba;
871 struct hisi_sas_slot *s, *s1;
872 struct list_head *dq_list;
873 int dlvry_queue = dq->id;
874 int wp, count = 0;
875
876 dq_list = &dq->list;
877 list_for_each_entry_safe(s, s1, &dq->list, delivery) {
878 if (!s->ready)
879 break;
880 count++;
881 wp = (s->dlvry_queue_slot + 1) % HISI_SAS_QUEUE_SLOTS;
882 list_del(&s->delivery);
883 }
884
885 if (!count)
886 return;
887
888 hisi_sas_write32(hisi_hba, DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14), wp);
889 }
890
891 static void prep_prd_sge_v3_hw(struct hisi_hba *hisi_hba,
892 struct hisi_sas_slot *slot,
893 struct hisi_sas_cmd_hdr *hdr,
894 struct scatterlist *scatter,
895 int n_elem)
896 {
897 struct hisi_sas_sge_page *sge_page = hisi_sas_sge_addr_mem(slot);
898 struct scatterlist *sg;
899 int i;
900
901 for_each_sg(scatter, sg, n_elem, i) {
902 struct hisi_sas_sge *entry = &sge_page->sge[i];
903
904 entry->addr = cpu_to_le64(sg_dma_address(sg));
905 entry->page_ctrl_0 = entry->page_ctrl_1 = 0;
906 entry->data_len = cpu_to_le32(sg_dma_len(sg));
907 entry->data_off = 0;
908 }
909
910 hdr->prd_table_addr = cpu_to_le64(hisi_sas_sge_addr_dma(slot));
911
912 hdr->sg_len = cpu_to_le32(n_elem << CMD_HDR_DATA_SGL_LEN_OFF);
913 }
914
915 static void prep_ssp_v3_hw(struct hisi_hba *hisi_hba,
916 struct hisi_sas_slot *slot)
917 {
918 struct sas_task *task = slot->task;
919 struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
920 struct domain_device *device = task->dev;
921 struct hisi_sas_device *sas_dev = device->lldd_dev;
922 struct hisi_sas_port *port = slot->port;
923 struct sas_ssp_task *ssp_task = &task->ssp_task;
924 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
925 struct hisi_sas_tmf_task *tmf = slot->tmf;
926 int has_data = 0, priority = !!tmf;
927 u8 *buf_cmd;
928 u32 dw1 = 0, dw2 = 0;
929
930 hdr->dw0 = cpu_to_le32((1 << CMD_HDR_RESP_REPORT_OFF) |
931 (2 << CMD_HDR_TLR_CTRL_OFF) |
932 (port->id << CMD_HDR_PORT_OFF) |
933 (priority << CMD_HDR_PRIORITY_OFF) |
934 (1 << CMD_HDR_CMD_OFF)); /* ssp */
935
936 dw1 = 1 << CMD_HDR_VDTL_OFF;
937 if (tmf) {
938 dw1 |= 2 << CMD_HDR_FRAME_TYPE_OFF;
939 dw1 |= DIR_NO_DATA << CMD_HDR_DIR_OFF;
940 } else {
941 dw1 |= 1 << CMD_HDR_FRAME_TYPE_OFF;
942 switch (scsi_cmnd->sc_data_direction) {
943 case DMA_TO_DEVICE:
944 has_data = 1;
945 dw1 |= DIR_TO_DEVICE << CMD_HDR_DIR_OFF;
946 break;
947 case DMA_FROM_DEVICE:
948 has_data = 1;
949 dw1 |= DIR_TO_INI << CMD_HDR_DIR_OFF;
950 break;
951 default:
952 dw1 &= ~CMD_HDR_DIR_MSK;
953 }
954 }
955
956 /* map itct entry */
957 dw1 |= sas_dev->device_id << CMD_HDR_DEV_ID_OFF;
958 hdr->dw1 = cpu_to_le32(dw1);
959
960 dw2 = (((sizeof(struct ssp_command_iu) + sizeof(struct ssp_frame_hdr)
961 + 3) / 4) << CMD_HDR_CFL_OFF) |
962 ((HISI_SAS_MAX_SSP_RESP_SZ / 4) << CMD_HDR_MRFL_OFF) |
963 (2 << CMD_HDR_SG_MOD_OFF);
964 hdr->dw2 = cpu_to_le32(dw2);
965 hdr->transfer_tags = cpu_to_le32(slot->idx);
966
967 if (has_data)
968 prep_prd_sge_v3_hw(hisi_hba, slot, hdr, task->scatter,
969 slot->n_elem);
970
971 hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
972 hdr->cmd_table_addr = cpu_to_le64(hisi_sas_cmd_hdr_addr_dma(slot));
973 hdr->sts_buffer_addr = cpu_to_le64(hisi_sas_status_buf_addr_dma(slot));
974
975 buf_cmd = hisi_sas_cmd_hdr_addr_mem(slot) +
976 sizeof(struct ssp_frame_hdr);
977
978 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
979 if (!tmf) {
980 buf_cmd[9] = ssp_task->task_attr | (ssp_task->task_prio << 3);
981 memcpy(buf_cmd + 12, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
982 } else {
983 buf_cmd[10] = tmf->tmf;
984 switch (tmf->tmf) {
985 case TMF_ABORT_TASK:
986 case TMF_QUERY_TASK:
987 buf_cmd[12] =
988 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
989 buf_cmd[13] =
990 tmf->tag_of_task_to_be_managed & 0xff;
991 break;
992 default:
993 break;
994 }
995 }
996 }
997
998 static void prep_smp_v3_hw(struct hisi_hba *hisi_hba,
999 struct hisi_sas_slot *slot)
1000 {
1001 struct sas_task *task = slot->task;
1002 struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
1003 struct domain_device *device = task->dev;
1004 struct hisi_sas_port *port = slot->port;
1005 struct scatterlist *sg_req;
1006 struct hisi_sas_device *sas_dev = device->lldd_dev;
1007 dma_addr_t req_dma_addr;
1008 unsigned int req_len;
1009
1010 /* req */
1011 sg_req = &task->smp_task.smp_req;
1012 req_len = sg_dma_len(sg_req);
1013 req_dma_addr = sg_dma_address(sg_req);
1014
1015 /* create header */
1016 /* dw0 */
1017 hdr->dw0 = cpu_to_le32((port->id << CMD_HDR_PORT_OFF) |
1018 (1 << CMD_HDR_PRIORITY_OFF) | /* high pri */
1019 (2 << CMD_HDR_CMD_OFF)); /* smp */
1020
1021 /* map itct entry */
1022 hdr->dw1 = cpu_to_le32((sas_dev->device_id << CMD_HDR_DEV_ID_OFF) |
1023 (1 << CMD_HDR_FRAME_TYPE_OFF) |
1024 (DIR_NO_DATA << CMD_HDR_DIR_OFF));
1025
1026 /* dw2 */
1027 hdr->dw2 = cpu_to_le32((((req_len - 4) / 4) << CMD_HDR_CFL_OFF) |
1028 (HISI_SAS_MAX_SMP_RESP_SZ / 4 <<
1029 CMD_HDR_MRFL_OFF));
1030
1031 hdr->transfer_tags = cpu_to_le32(slot->idx << CMD_HDR_IPTT_OFF);
1032
1033 hdr->cmd_table_addr = cpu_to_le64(req_dma_addr);
1034 hdr->sts_buffer_addr = cpu_to_le64(hisi_sas_status_buf_addr_dma(slot));
1035
1036 }
1037
1038 static void prep_ata_v3_hw(struct hisi_hba *hisi_hba,
1039 struct hisi_sas_slot *slot)
1040 {
1041 struct sas_task *task = slot->task;
1042 struct domain_device *device = task->dev;
1043 struct domain_device *parent_dev = device->parent;
1044 struct hisi_sas_device *sas_dev = device->lldd_dev;
1045 struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
1046 struct asd_sas_port *sas_port = device->port;
1047 struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
1048 u8 *buf_cmd;
1049 int has_data = 0, hdr_tag = 0;
1050 u32 dw1 = 0, dw2 = 0;
1051
1052 hdr->dw0 = cpu_to_le32(port->id << CMD_HDR_PORT_OFF);
1053 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
1054 hdr->dw0 |= cpu_to_le32(3 << CMD_HDR_CMD_OFF);
1055 else
1056 hdr->dw0 |= cpu_to_le32(4 << CMD_HDR_CMD_OFF);
1057
1058 switch (task->data_dir) {
1059 case DMA_TO_DEVICE:
1060 has_data = 1;
1061 dw1 |= DIR_TO_DEVICE << CMD_HDR_DIR_OFF;
1062 break;
1063 case DMA_FROM_DEVICE:
1064 has_data = 1;
1065 dw1 |= DIR_TO_INI << CMD_HDR_DIR_OFF;
1066 break;
1067 default:
1068 dw1 &= ~CMD_HDR_DIR_MSK;
1069 }
1070
1071 if ((task->ata_task.fis.command == ATA_CMD_DEV_RESET) &&
1072 (task->ata_task.fis.control & ATA_SRST))
1073 dw1 |= 1 << CMD_HDR_RESET_OFF;
1074
1075 dw1 |= (hisi_sas_get_ata_protocol(
1076 &task->ata_task.fis, task->data_dir))
1077 << CMD_HDR_FRAME_TYPE_OFF;
1078 dw1 |= sas_dev->device_id << CMD_HDR_DEV_ID_OFF;
1079
1080 if (FIS_CMD_IS_UNCONSTRAINED(task->ata_task.fis))
1081 dw1 |= 1 << CMD_HDR_UNCON_CMD_OFF;
1082
1083 hdr->dw1 = cpu_to_le32(dw1);
1084
1085 /* dw2 */
1086 if (task->ata_task.use_ncq && hisi_sas_get_ncq_tag(task, &hdr_tag)) {
1087 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
1088 dw2 |= hdr_tag << CMD_HDR_NCQ_TAG_OFF;
1089 }
1090
1091 dw2 |= (HISI_SAS_MAX_STP_RESP_SZ / 4) << CMD_HDR_CFL_OFF |
1092 2 << CMD_HDR_SG_MOD_OFF;
1093 hdr->dw2 = cpu_to_le32(dw2);
1094
1095 /* dw3 */
1096 hdr->transfer_tags = cpu_to_le32(slot->idx);
1097
1098 if (has_data)
1099 prep_prd_sge_v3_hw(hisi_hba, slot, hdr, task->scatter,
1100 slot->n_elem);
1101
1102 hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
1103 hdr->cmd_table_addr = cpu_to_le64(hisi_sas_cmd_hdr_addr_dma(slot));
1104 hdr->sts_buffer_addr = cpu_to_le64(hisi_sas_status_buf_addr_dma(slot));
1105
1106 buf_cmd = hisi_sas_cmd_hdr_addr_mem(slot);
1107
1108 if (likely(!task->ata_task.device_control_reg_update))
1109 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
1110 /* fill in command FIS */
1111 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
1112 }
1113
1114 static void prep_abort_v3_hw(struct hisi_hba *hisi_hba,
1115 struct hisi_sas_slot *slot,
1116 int device_id, int abort_flag, int tag_to_abort)
1117 {
1118 struct sas_task *task = slot->task;
1119 struct domain_device *dev = task->dev;
1120 struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
1121 struct hisi_sas_port *port = slot->port;
1122
1123 /* dw0 */
1124 hdr->dw0 = cpu_to_le32((5 << CMD_HDR_CMD_OFF) | /*abort*/
1125 (port->id << CMD_HDR_PORT_OFF) |
1126 (dev_is_sata(dev)
1127 << CMD_HDR_ABORT_DEVICE_TYPE_OFF) |
1128 (abort_flag
1129 << CMD_HDR_ABORT_FLAG_OFF));
1130
1131 /* dw1 */
1132 hdr->dw1 = cpu_to_le32(device_id
1133 << CMD_HDR_DEV_ID_OFF);
1134
1135 /* dw7 */
1136 hdr->dw7 = cpu_to_le32(tag_to_abort << CMD_HDR_ABORT_IPTT_OFF);
1137 hdr->transfer_tags = cpu_to_le32(slot->idx);
1138
1139 }
1140
1141 static irqreturn_t phy_up_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
1142 {
1143 int i, res;
1144 u32 context, port_id, link_rate;
1145 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1146 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1147 struct device *dev = hisi_hba->dev;
1148 unsigned long flags;
1149
1150 hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 1);
1151
1152 port_id = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
1153 port_id = (port_id >> (4 * phy_no)) & 0xf;
1154 link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
1155 link_rate = (link_rate >> (phy_no * 4)) & 0xf;
1156
1157 if (port_id == 0xf) {
1158 dev_err(dev, "phyup: phy%d invalid portid\n", phy_no);
1159 res = IRQ_NONE;
1160 goto end;
1161 }
1162 sas_phy->linkrate = link_rate;
1163 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1164
1165 /* Check for SATA dev */
1166 context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
1167 if (context & (1 << phy_no)) {
1168 struct hisi_sas_initial_fis *initial_fis;
1169 struct dev_to_host_fis *fis;
1170 u8 attached_sas_addr[SAS_ADDR_SIZE] = {0};
1171
1172 dev_info(dev, "phyup: phy%d link_rate=%d(sata)\n", phy_no, link_rate);
1173 initial_fis = &hisi_hba->initial_fis[phy_no];
1174 fis = &initial_fis->fis;
1175 sas_phy->oob_mode = SATA_OOB_MODE;
1176 attached_sas_addr[0] = 0x50;
1177 attached_sas_addr[7] = phy_no;
1178 memcpy(sas_phy->attached_sas_addr,
1179 attached_sas_addr,
1180 SAS_ADDR_SIZE);
1181 memcpy(sas_phy->frame_rcvd, fis,
1182 sizeof(struct dev_to_host_fis));
1183 phy->phy_type |= PORT_TYPE_SATA;
1184 phy->identify.device_type = SAS_SATA_DEV;
1185 phy->frame_rcvd_size = sizeof(struct dev_to_host_fis);
1186 phy->identify.target_port_protocols = SAS_PROTOCOL_SATA;
1187 } else {
1188 u32 *frame_rcvd = (u32 *)sas_phy->frame_rcvd;
1189 struct sas_identify_frame *id =
1190 (struct sas_identify_frame *)frame_rcvd;
1191
1192 dev_info(dev, "phyup: phy%d link_rate=%d\n", phy_no, link_rate);
1193 for (i = 0; i < 6; i++) {
1194 u32 idaf = hisi_sas_phy_read32(hisi_hba, phy_no,
1195 RX_IDAF_DWORD0 + (i * 4));
1196 frame_rcvd[i] = __swab32(idaf);
1197 }
1198 sas_phy->oob_mode = SAS_OOB_MODE;
1199 memcpy(sas_phy->attached_sas_addr,
1200 &id->sas_addr,
1201 SAS_ADDR_SIZE);
1202 phy->phy_type |= PORT_TYPE_SAS;
1203 phy->identify.device_type = id->dev_type;
1204 phy->frame_rcvd_size = sizeof(struct sas_identify_frame);
1205 if (phy->identify.device_type == SAS_END_DEVICE)
1206 phy->identify.target_port_protocols =
1207 SAS_PROTOCOL_SSP;
1208 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1209 phy->identify.target_port_protocols =
1210 SAS_PROTOCOL_SMP;
1211 }
1212
1213 phy->port_id = port_id;
1214 phy->phy_attached = 1;
1215 hisi_sas_notify_phy_event(phy, HISI_PHYE_PHY_UP);
1216 res = IRQ_HANDLED;
1217 spin_lock_irqsave(&phy->lock, flags);
1218 if (phy->reset_completion) {
1219 phy->in_reset = 0;
1220 complete(phy->reset_completion);
1221 }
1222 spin_unlock_irqrestore(&phy->lock, flags);
1223 end:
1224 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
1225 CHL_INT0_SL_PHY_ENABLE_MSK);
1226 hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 0);
1227
1228 return res;
1229 }
1230
1231 static irqreturn_t phy_down_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
1232 {
1233 u32 phy_state, sl_ctrl, txid_auto;
1234 struct device *dev = hisi_hba->dev;
1235
1236 hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 1);
1237
1238 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
1239 dev_info(dev, "phydown: phy%d phy_state=0x%x\n", phy_no, phy_state);
1240 hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0);
1241
1242 sl_ctrl = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
1243 hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL,
1244 sl_ctrl&(~SL_CTA_MSK));
1245
1246 txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);
1247 hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
1248 txid_auto | CT3_MSK);
1249
1250 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0, CHL_INT0_NOT_RDY_MSK);
1251 hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 0);
1252
1253 return IRQ_HANDLED;
1254 }
1255
1256 static irqreturn_t phy_bcast_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
1257 {
1258 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1259 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1260 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1261 u32 bcast_status;
1262
1263 hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 1);
1264 bcast_status = hisi_sas_phy_read32(hisi_hba, phy_no, RX_PRIMS_STATUS);
1265 if ((bcast_status & RX_BCAST_CHG_MSK) &&
1266 !test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1267 sas_ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
1268 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
1269 CHL_INT0_SL_RX_BCST_ACK_MSK);
1270 hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 0);
1271
1272 return IRQ_HANDLED;
1273 }
1274
1275 static irqreturn_t int_phy_up_down_bcast_v3_hw(int irq_no, void *p)
1276 {
1277 struct hisi_hba *hisi_hba = p;
1278 u32 irq_msk;
1279 int phy_no = 0;
1280 irqreturn_t res = IRQ_NONE;
1281
1282 irq_msk = hisi_sas_read32(hisi_hba, CHNL_INT_STATUS)
1283 & 0x11111111;
1284 while (irq_msk) {
1285 if (irq_msk & 1) {
1286 u32 irq_value = hisi_sas_phy_read32(hisi_hba, phy_no,
1287 CHL_INT0);
1288 u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
1289 int rdy = phy_state & (1 << phy_no);
1290
1291 if (rdy) {
1292 if (irq_value & CHL_INT0_SL_PHY_ENABLE_MSK)
1293 /* phy up */
1294 if (phy_up_v3_hw(phy_no, hisi_hba)
1295 == IRQ_HANDLED)
1296 res = IRQ_HANDLED;
1297 if (irq_value & CHL_INT0_SL_RX_BCST_ACK_MSK)
1298 /* phy bcast */
1299 if (phy_bcast_v3_hw(phy_no, hisi_hba)
1300 == IRQ_HANDLED)
1301 res = IRQ_HANDLED;
1302 } else {
1303 if (irq_value & CHL_INT0_NOT_RDY_MSK)
1304 /* phy down */
1305 if (phy_down_v3_hw(phy_no, hisi_hba)
1306 == IRQ_HANDLED)
1307 res = IRQ_HANDLED;
1308 }
1309 }
1310 irq_msk >>= 4;
1311 phy_no++;
1312 }
1313
1314 return res;
1315 }
1316
1317 static const struct hisi_sas_hw_error port_axi_error[] = {
1318 {
1319 .irq_msk = BIT(CHL_INT1_DMAC_TX_AXI_WR_ERR_OFF),
1320 .msg = "dma_tx_axi_wr_err",
1321 },
1322 {
1323 .irq_msk = BIT(CHL_INT1_DMAC_TX_AXI_RD_ERR_OFF),
1324 .msg = "dma_tx_axi_rd_err",
1325 },
1326 {
1327 .irq_msk = BIT(CHL_INT1_DMAC_RX_AXI_WR_ERR_OFF),
1328 .msg = "dma_rx_axi_wr_err",
1329 },
1330 {
1331 .irq_msk = BIT(CHL_INT1_DMAC_RX_AXI_RD_ERR_OFF),
1332 .msg = "dma_rx_axi_rd_err",
1333 },
1334 };
1335
1336 static void handle_chl_int1_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
1337 {
1338 u32 irq_value = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT1);
1339 u32 irq_msk = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT1_MSK);
1340 struct device *dev = hisi_hba->dev;
1341 int i;
1342
1343 irq_value &= ~irq_msk;
1344 if (!irq_value)
1345 return;
1346
1347 for (i = 0; i < ARRAY_SIZE(port_axi_error); i++) {
1348 const struct hisi_sas_hw_error *error = &port_axi_error[i];
1349
1350 if (!(irq_value & error->irq_msk))
1351 continue;
1352
1353 dev_err(dev, "%s error (phy%d 0x%x) found!\n",
1354 error->msg, phy_no, irq_value);
1355 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
1356 }
1357
1358 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT1, irq_value);
1359 }
1360
1361 static void handle_chl_int2_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
1362 {
1363 u32 irq_msk = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT2_MSK);
1364 u32 irq_value = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT2);
1365 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1366 struct pci_dev *pci_dev = hisi_hba->pci_dev;
1367 struct device *dev = hisi_hba->dev;
1368
1369 irq_value &= ~irq_msk;
1370 if (!irq_value)
1371 return;
1372
1373 if (irq_value & BIT(CHL_INT2_SL_IDAF_TOUT_CONF_OFF)) {
1374 dev_warn(dev, "phy%d identify timeout\n", phy_no);
1375 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
1376 }
1377
1378 if (irq_value & BIT(CHL_INT2_STP_LINK_TIMEOUT_OFF)) {
1379 u32 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no,
1380 STP_LINK_TIMEOUT_STATE);
1381
1382 dev_warn(dev, "phy%d stp link timeout (0x%x)\n",
1383 phy_no, reg_value);
1384 if (reg_value & BIT(4))
1385 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
1386 }
1387
1388 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2, irq_value);
1389
1390 if ((irq_value & BIT(CHL_INT2_RX_INVLD_DW_OFF)) &&
1391 (pci_dev->revision == 0x20)) {
1392 u32 reg_value;
1393 int rc;
1394
1395 rc = hisi_sas_read32_poll_timeout_atomic(
1396 HILINK_ERR_DFX, reg_value,
1397 !((reg_value >> 8) & BIT(phy_no)),
1398 1000, 10000);
1399 if (rc) {
1400 disable_phy_v3_hw(hisi_hba, phy_no);
1401 hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2,
1402 BIT(CHL_INT2_RX_INVLD_DW_OFF));
1403 hisi_sas_phy_read32(hisi_hba, phy_no, ERR_CNT_INVLD_DW);
1404 mdelay(1);
1405 enable_phy_v3_hw(hisi_hba, phy_no);
1406 }
1407 }
1408 }
1409
1410 static irqreturn_t int_chnl_int_v3_hw(int irq_no, void *p)
1411 {
1412 struct hisi_hba *hisi_hba = p;
1413 u32 irq_msk;
1414 int phy_no = 0;
1415
1416 irq_msk = hisi_sas_read32(hisi_hba, CHNL_INT_STATUS)
1417 & 0xeeeeeeee;
1418
1419 while (irq_msk) {
1420 u32 irq_value0 = hisi_sas_phy_read32(hisi_hba, phy_no,
1421 CHL_INT0);
1422
1423 if (irq_msk & (4 << (phy_no * 4)))
1424 handle_chl_int1_v3_hw(hisi_hba, phy_no);
1425
1426 if (irq_msk & (8 << (phy_no * 4)))
1427 handle_chl_int2_v3_hw(hisi_hba, phy_no);
1428
1429 if (irq_msk & (2 << (phy_no * 4)) && irq_value0) {
1430 hisi_sas_phy_write32(hisi_hba, phy_no,
1431 CHL_INT0, irq_value0
1432 & (~CHL_INT0_SL_RX_BCST_ACK_MSK)
1433 & (~CHL_INT0_SL_PHY_ENABLE_MSK)
1434 & (~CHL_INT0_NOT_RDY_MSK));
1435 }
1436 irq_msk &= ~(0xe << (phy_no * 4));
1437 phy_no++;
1438 }
1439
1440 return IRQ_HANDLED;
1441 }
1442
1443 static const struct hisi_sas_hw_error axi_error[] = {
1444 { .msk = BIT(0), .msg = "IOST_AXI_W_ERR" },
1445 { .msk = BIT(1), .msg = "IOST_AXI_R_ERR" },
1446 { .msk = BIT(2), .msg = "ITCT_AXI_W_ERR" },
1447 { .msk = BIT(3), .msg = "ITCT_AXI_R_ERR" },
1448 { .msk = BIT(4), .msg = "SATA_AXI_W_ERR" },
1449 { .msk = BIT(5), .msg = "SATA_AXI_R_ERR" },
1450 { .msk = BIT(6), .msg = "DQE_AXI_R_ERR" },
1451 { .msk = BIT(7), .msg = "CQE_AXI_W_ERR" },
1452 {},
1453 };
1454
1455 static const struct hisi_sas_hw_error fifo_error[] = {
1456 { .msk = BIT(8), .msg = "CQE_WINFO_FIFO" },
1457 { .msk = BIT(9), .msg = "CQE_MSG_FIFIO" },
1458 { .msk = BIT(10), .msg = "GETDQE_FIFO" },
1459 { .msk = BIT(11), .msg = "CMDP_FIFO" },
1460 { .msk = BIT(12), .msg = "AWTCTRL_FIFO" },
1461 {},
1462 };
1463
1464 static const struct hisi_sas_hw_error fatal_axi_error[] = {
1465 {
1466 .irq_msk = BIT(ENT_INT_SRC3_WP_DEPTH_OFF),
1467 .msg = "write pointer and depth",
1468 },
1469 {
1470 .irq_msk = BIT(ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF),
1471 .msg = "iptt no match slot",
1472 },
1473 {
1474 .irq_msk = BIT(ENT_INT_SRC3_RP_DEPTH_OFF),
1475 .msg = "read pointer and depth",
1476 },
1477 {
1478 .irq_msk = BIT(ENT_INT_SRC3_AXI_OFF),
1479 .reg = HGC_AXI_FIFO_ERR_INFO,
1480 .sub = axi_error,
1481 },
1482 {
1483 .irq_msk = BIT(ENT_INT_SRC3_FIFO_OFF),
1484 .reg = HGC_AXI_FIFO_ERR_INFO,
1485 .sub = fifo_error,
1486 },
1487 {
1488 .irq_msk = BIT(ENT_INT_SRC3_LM_OFF),
1489 .msg = "LM add/fetch list",
1490 },
1491 {
1492 .irq_msk = BIT(ENT_INT_SRC3_ABT_OFF),
1493 .msg = "SAS_HGC_ABT fetch LM list",
1494 },
1495 };
1496
1497 static irqreturn_t fatal_axi_int_v3_hw(int irq_no, void *p)
1498 {
1499 u32 irq_value, irq_msk;
1500 struct hisi_hba *hisi_hba = p;
1501 struct device *dev = hisi_hba->dev;
1502 int i;
1503
1504 irq_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK3);
1505 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk | 0x1df00);
1506
1507 irq_value = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
1508 irq_value &= ~irq_msk;
1509
1510 for (i = 0; i < ARRAY_SIZE(fatal_axi_error); i++) {
1511 const struct hisi_sas_hw_error *error = &fatal_axi_error[i];
1512
1513 if (!(irq_value & error->irq_msk))
1514 continue;
1515
1516 if (error->sub) {
1517 const struct hisi_sas_hw_error *sub = error->sub;
1518 u32 err_value = hisi_sas_read32(hisi_hba, error->reg);
1519
1520 for (; sub->msk || sub->msg; sub++) {
1521 if (!(err_value & sub->msk))
1522 continue;
1523
1524 dev_err(dev, "%s error (0x%x) found!\n",
1525 sub->msg, irq_value);
1526 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
1527 }
1528 } else {
1529 dev_err(dev, "%s error (0x%x) found!\n",
1530 error->msg, irq_value);
1531 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
1532 }
1533 }
1534
1535 if (irq_value & BIT(ENT_INT_SRC3_ITC_INT_OFF)) {
1536 u32 reg_val = hisi_sas_read32(hisi_hba, ITCT_CLR);
1537 u32 dev_id = reg_val & ITCT_DEV_MSK;
1538 struct hisi_sas_device *sas_dev =
1539 &hisi_hba->devices[dev_id];
1540
1541 hisi_sas_write32(hisi_hba, ITCT_CLR, 0);
1542 dev_dbg(dev, "clear ITCT ok\n");
1543 complete(sas_dev->completion);
1544 }
1545
1546 hisi_sas_write32(hisi_hba, ENT_INT_SRC3, irq_value & 0x1df00);
1547 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk);
1548
1549 return IRQ_HANDLED;
1550 }
1551
1552 static void
1553 slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task,
1554 struct hisi_sas_slot *slot)
1555 {
1556 struct task_status_struct *ts = &task->task_status;
1557 struct hisi_sas_complete_v3_hdr *complete_queue =
1558 hisi_hba->complete_hdr[slot->cmplt_queue];
1559 struct hisi_sas_complete_v3_hdr *complete_hdr =
1560 &complete_queue[slot->cmplt_queue_slot];
1561 struct hisi_sas_err_record_v3 *record =
1562 hisi_sas_status_buf_addr_mem(slot);
1563 u32 dma_rx_err_type = record->dma_rx_err_type;
1564 u32 trans_tx_fail_type = record->trans_tx_fail_type;
1565
1566 switch (task->task_proto) {
1567 case SAS_PROTOCOL_SSP:
1568 if (dma_rx_err_type & RX_DATA_LEN_UNDERFLOW_MSK) {
1569 ts->residual = trans_tx_fail_type;
1570 ts->stat = SAS_DATA_UNDERRUN;
1571 } else if (complete_hdr->dw3 & CMPLT_HDR_IO_IN_TARGET_MSK) {
1572 ts->stat = SAS_QUEUE_FULL;
1573 slot->abort = 1;
1574 } else {
1575 ts->stat = SAS_OPEN_REJECT;
1576 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
1577 }
1578 break;
1579 case SAS_PROTOCOL_SATA:
1580 case SAS_PROTOCOL_STP:
1581 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1582 if (dma_rx_err_type & RX_DATA_LEN_UNDERFLOW_MSK) {
1583 ts->residual = trans_tx_fail_type;
1584 ts->stat = SAS_DATA_UNDERRUN;
1585 } else if (complete_hdr->dw3 & CMPLT_HDR_IO_IN_TARGET_MSK) {
1586 ts->stat = SAS_PHY_DOWN;
1587 slot->abort = 1;
1588 } else {
1589 ts->stat = SAS_OPEN_REJECT;
1590 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
1591 }
1592 hisi_sas_sata_done(task, slot);
1593 break;
1594 case SAS_PROTOCOL_SMP:
1595 ts->stat = SAM_STAT_CHECK_CONDITION;
1596 break;
1597 default:
1598 break;
1599 }
1600 }
1601
1602 static int
1603 slot_complete_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot)
1604 {
1605 struct sas_task *task = slot->task;
1606 struct hisi_sas_device *sas_dev;
1607 struct device *dev = hisi_hba->dev;
1608 struct task_status_struct *ts;
1609 struct domain_device *device;
1610 struct sas_ha_struct *ha;
1611 enum exec_status sts;
1612 struct hisi_sas_complete_v3_hdr *complete_queue =
1613 hisi_hba->complete_hdr[slot->cmplt_queue];
1614 struct hisi_sas_complete_v3_hdr *complete_hdr =
1615 &complete_queue[slot->cmplt_queue_slot];
1616 unsigned long flags;
1617 bool is_internal = slot->is_internal;
1618
1619 if (unlikely(!task || !task->lldd_task || !task->dev))
1620 return -EINVAL;
1621
1622 ts = &task->task_status;
1623 device = task->dev;
1624 ha = device->port->ha;
1625 sas_dev = device->lldd_dev;
1626
1627 spin_lock_irqsave(&task->task_state_lock, flags);
1628 task->task_state_flags &=
1629 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1630 spin_unlock_irqrestore(&task->task_state_lock, flags);
1631
1632 memset(ts, 0, sizeof(*ts));
1633 ts->resp = SAS_TASK_COMPLETE;
1634
1635 if (unlikely(!sas_dev)) {
1636 dev_dbg(dev, "slot complete: port has not device\n");
1637 ts->stat = SAS_PHY_DOWN;
1638 goto out;
1639 }
1640
1641 /*
1642 * Use SAS+TMF status codes
1643 */
1644 switch ((complete_hdr->dw0 & CMPLT_HDR_ABORT_STAT_MSK)
1645 >> CMPLT_HDR_ABORT_STAT_OFF) {
1646 case STAT_IO_ABORTED:
1647 /* this IO has been aborted by abort command */
1648 ts->stat = SAS_ABORTED_TASK;
1649 goto out;
1650 case STAT_IO_COMPLETE:
1651 /* internal abort command complete */
1652 ts->stat = TMF_RESP_FUNC_SUCC;
1653 goto out;
1654 case STAT_IO_NO_DEVICE:
1655 ts->stat = TMF_RESP_FUNC_COMPLETE;
1656 goto out;
1657 case STAT_IO_NOT_VALID:
1658 /*
1659 * abort single IO, the controller can't find the IO
1660 */
1661 ts->stat = TMF_RESP_FUNC_FAILED;
1662 goto out;
1663 default:
1664 break;
1665 }
1666
1667 /* check for erroneous completion */
1668 if ((complete_hdr->dw0 & CMPLT_HDR_CMPLT_MSK) == 0x3) {
1669 u32 *error_info = hisi_sas_status_buf_addr_mem(slot);
1670
1671 slot_err_v3_hw(hisi_hba, task, slot);
1672 if (ts->stat != SAS_DATA_UNDERRUN)
1673 dev_info(dev, "erroneous completion iptt=%d task=%p dev id=%d "
1674 "CQ hdr: 0x%x 0x%x 0x%x 0x%x "
1675 "Error info: 0x%x 0x%x 0x%x 0x%x\n",
1676 slot->idx, task, sas_dev->device_id,
1677 complete_hdr->dw0, complete_hdr->dw1,
1678 complete_hdr->act, complete_hdr->dw3,
1679 error_info[0], error_info[1],
1680 error_info[2], error_info[3]);
1681 if (unlikely(slot->abort))
1682 return ts->stat;
1683 goto out;
1684 }
1685
1686 switch (task->task_proto) {
1687 case SAS_PROTOCOL_SSP: {
1688 struct ssp_response_iu *iu =
1689 hisi_sas_status_buf_addr_mem(slot) +
1690 sizeof(struct hisi_sas_err_record);
1691
1692 sas_ssp_task_response(dev, task, iu);
1693 break;
1694 }
1695 case SAS_PROTOCOL_SMP: {
1696 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1697 void *to;
1698
1699 ts->stat = SAM_STAT_GOOD;
1700 to = kmap_atomic(sg_page(sg_resp));
1701
1702 dma_unmap_sg(dev, &task->smp_task.smp_resp, 1,
1703 DMA_FROM_DEVICE);
1704 dma_unmap_sg(dev, &task->smp_task.smp_req, 1,
1705 DMA_TO_DEVICE);
1706 memcpy(to + sg_resp->offset,
1707 hisi_sas_status_buf_addr_mem(slot) +
1708 sizeof(struct hisi_sas_err_record),
1709 sg_dma_len(sg_resp));
1710 kunmap_atomic(to);
1711 break;
1712 }
1713 case SAS_PROTOCOL_SATA:
1714 case SAS_PROTOCOL_STP:
1715 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1716 ts->stat = SAM_STAT_GOOD;
1717 hisi_sas_sata_done(task, slot);
1718 break;
1719 default:
1720 ts->stat = SAM_STAT_CHECK_CONDITION;
1721 break;
1722 }
1723
1724 if (!slot->port->port_attached) {
1725 dev_warn(dev, "slot complete: port %d has removed\n",
1726 slot->port->sas_port.id);
1727 ts->stat = SAS_PHY_DOWN;
1728 }
1729
1730 out:
1731 hisi_sas_slot_task_free(hisi_hba, task, slot);
1732 sts = ts->stat;
1733 spin_lock_irqsave(&task->task_state_lock, flags);
1734 if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
1735 spin_unlock_irqrestore(&task->task_state_lock, flags);
1736 dev_info(dev, "slot complete: task(%p) aborted\n", task);
1737 return SAS_ABORTED_TASK;
1738 }
1739 task->task_state_flags |= SAS_TASK_STATE_DONE;
1740 spin_unlock_irqrestore(&task->task_state_lock, flags);
1741
1742 if (!is_internal && (task->task_proto != SAS_PROTOCOL_SMP)) {
1743 spin_lock_irqsave(&device->done_lock, flags);
1744 if (test_bit(SAS_HA_FROZEN, &ha->state)) {
1745 spin_unlock_irqrestore(&device->done_lock, flags);
1746 dev_info(dev, "slot complete: task(%p) ignored\n ",
1747 task);
1748 return sts;
1749 }
1750 spin_unlock_irqrestore(&device->done_lock, flags);
1751 }
1752
1753 if (task->task_done)
1754 task->task_done(task);
1755
1756 return sts;
1757 }
1758
1759 static void cq_tasklet_v3_hw(unsigned long val)
1760 {
1761 struct hisi_sas_cq *cq = (struct hisi_sas_cq *)val;
1762 struct hisi_hba *hisi_hba = cq->hisi_hba;
1763 struct hisi_sas_slot *slot;
1764 struct hisi_sas_complete_v3_hdr *complete_queue;
1765 u32 rd_point = cq->rd_point, wr_point;
1766 int queue = cq->id;
1767
1768 complete_queue = hisi_hba->complete_hdr[queue];
1769
1770 wr_point = hisi_sas_read32(hisi_hba, COMPL_Q_0_WR_PTR +
1771 (0x14 * queue));
1772
1773 while (rd_point != wr_point) {
1774 struct hisi_sas_complete_v3_hdr *complete_hdr;
1775 struct device *dev = hisi_hba->dev;
1776 int iptt;
1777
1778 complete_hdr = &complete_queue[rd_point];
1779
1780 iptt = (complete_hdr->dw1) & CMPLT_HDR_IPTT_MSK;
1781 if (likely(iptt < HISI_SAS_COMMAND_ENTRIES_V3_HW)) {
1782 slot = &hisi_hba->slot_info[iptt];
1783 slot->cmplt_queue_slot = rd_point;
1784 slot->cmplt_queue = queue;
1785 slot_complete_v3_hw(hisi_hba, slot);
1786 } else
1787 dev_err(dev, "IPTT %d is invalid, discard it.\n", iptt);
1788
1789 if (++rd_point >= HISI_SAS_QUEUE_SLOTS)
1790 rd_point = 0;
1791 }
1792
1793 /* update rd_point */
1794 cq->rd_point = rd_point;
1795 hisi_sas_write32(hisi_hba, COMPL_Q_0_RD_PTR + (0x14 * queue), rd_point);
1796 }
1797
1798 static irqreturn_t cq_interrupt_v3_hw(int irq_no, void *p)
1799 {
1800 struct hisi_sas_cq *cq = p;
1801 struct hisi_hba *hisi_hba = cq->hisi_hba;
1802 int queue = cq->id;
1803
1804 hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue);
1805
1806 tasklet_schedule(&cq->tasklet);
1807
1808 return IRQ_HANDLED;
1809 }
1810
1811 static int interrupt_init_v3_hw(struct hisi_hba *hisi_hba)
1812 {
1813 struct device *dev = hisi_hba->dev;
1814 struct pci_dev *pdev = hisi_hba->pci_dev;
1815 int vectors, rc;
1816 int i, k;
1817 int max_msi = HISI_SAS_MSI_COUNT_V3_HW;
1818
1819 vectors = pci_alloc_irq_vectors(hisi_hba->pci_dev, 1,
1820 max_msi, PCI_IRQ_MSI);
1821 if (vectors < max_msi) {
1822 dev_err(dev, "could not allocate all msi (%d)\n", vectors);
1823 return -ENOENT;
1824 }
1825
1826 rc = devm_request_irq(dev, pci_irq_vector(pdev, 1),
1827 int_phy_up_down_bcast_v3_hw, 0,
1828 DRV_NAME " phy", hisi_hba);
1829 if (rc) {
1830 dev_err(dev, "could not request phy interrupt, rc=%d\n", rc);
1831 rc = -ENOENT;
1832 goto free_irq_vectors;
1833 }
1834
1835 rc = devm_request_irq(dev, pci_irq_vector(pdev, 2),
1836 int_chnl_int_v3_hw, 0,
1837 DRV_NAME " channel", hisi_hba);
1838 if (rc) {
1839 dev_err(dev, "could not request chnl interrupt, rc=%d\n", rc);
1840 rc = -ENOENT;
1841 goto free_phy_irq;
1842 }
1843
1844 rc = devm_request_irq(dev, pci_irq_vector(pdev, 11),
1845 fatal_axi_int_v3_hw, 0,
1846 DRV_NAME " fatal", hisi_hba);
1847 if (rc) {
1848 dev_err(dev, "could not request fatal interrupt, rc=%d\n", rc);
1849 rc = -ENOENT;
1850 goto free_chnl_interrupt;
1851 }
1852
1853 /* Init tasklets for cq only */
1854 for (i = 0; i < hisi_hba->queue_count; i++) {
1855 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1856 struct tasklet_struct *t = &cq->tasklet;
1857
1858 rc = devm_request_irq(dev, pci_irq_vector(pdev, i+16),
1859 cq_interrupt_v3_hw, 0,
1860 DRV_NAME " cq", cq);
1861 if (rc) {
1862 dev_err(dev,
1863 "could not request cq%d interrupt, rc=%d\n",
1864 i, rc);
1865 rc = -ENOENT;
1866 goto free_cq_irqs;
1867 }
1868
1869 tasklet_init(t, cq_tasklet_v3_hw, (unsigned long)cq);
1870 }
1871
1872 return 0;
1873
1874 free_cq_irqs:
1875 for (k = 0; k < i; k++) {
1876 struct hisi_sas_cq *cq = &hisi_hba->cq[k];
1877
1878 free_irq(pci_irq_vector(pdev, k+16), cq);
1879 }
1880 free_irq(pci_irq_vector(pdev, 11), hisi_hba);
1881 free_chnl_interrupt:
1882 free_irq(pci_irq_vector(pdev, 2), hisi_hba);
1883 free_phy_irq:
1884 free_irq(pci_irq_vector(pdev, 1), hisi_hba);
1885 free_irq_vectors:
1886 pci_free_irq_vectors(pdev);
1887 return rc;
1888 }
1889
1890 static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
1891 {
1892 int rc;
1893
1894 rc = hw_init_v3_hw(hisi_hba);
1895 if (rc)
1896 return rc;
1897
1898 rc = interrupt_init_v3_hw(hisi_hba);
1899 if (rc)
1900 return rc;
1901
1902 return 0;
1903 }
1904
1905 static void phy_set_linkrate_v3_hw(struct hisi_hba *hisi_hba, int phy_no,
1906 struct sas_phy_linkrates *r)
1907 {
1908 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1909 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1910 enum sas_linkrate min, max;
1911 u32 prog_phy_link_rate = 0x800;
1912
1913 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1914 max = sas_phy->phy->maximum_linkrate;
1915 min = r->minimum_linkrate;
1916 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1917 max = r->maximum_linkrate;
1918 min = sas_phy->phy->minimum_linkrate;
1919 } else
1920 return;
1921
1922 sas_phy->phy->maximum_linkrate = max;
1923 sas_phy->phy->minimum_linkrate = min;
1924 prog_phy_link_rate |= hisi_sas_get_prog_phy_linkrate_mask(max);
1925
1926 disable_phy_v3_hw(hisi_hba, phy_no);
1927 msleep(100);
1928 hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
1929 prog_phy_link_rate);
1930 start_phy_v3_hw(hisi_hba, phy_no);
1931 }
1932
1933 static void interrupt_disable_v3_hw(struct hisi_hba *hisi_hba)
1934 {
1935 struct pci_dev *pdev = hisi_hba->pci_dev;
1936 int i;
1937
1938 synchronize_irq(pci_irq_vector(pdev, 1));
1939 synchronize_irq(pci_irq_vector(pdev, 2));
1940 synchronize_irq(pci_irq_vector(pdev, 11));
1941 for (i = 0; i < hisi_hba->queue_count; i++) {
1942 hisi_sas_write32(hisi_hba, OQ0_INT_SRC_MSK + 0x4 * i, 0x1);
1943 synchronize_irq(pci_irq_vector(pdev, i + 16));
1944 }
1945
1946 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0xffffffff);
1947 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0xffffffff);
1948 hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0xffffffff);
1949 hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0xffffffff);
1950
1951 for (i = 0; i < hisi_hba->n_phy; i++) {
1952 hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK, 0xffffffff);
1953 hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0xffffffff);
1954 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_NOT_RDY_MSK, 0x1);
1955 hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_PHY_ENA_MSK, 0x1);
1956 hisi_sas_phy_write32(hisi_hba, i, SL_RX_BCAST_CHK_MSK, 0x1);
1957 }
1958 }
1959
1960 static u32 get_phys_state_v3_hw(struct hisi_hba *hisi_hba)
1961 {
1962 return hisi_sas_read32(hisi_hba, PHY_STATE);
1963 }
1964
1965 static void phy_get_events_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
1966 {
1967 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1968 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1969 struct sas_phy *sphy = sas_phy->phy;
1970 u32 reg_value;
1971
1972 /* loss dword sync */
1973 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no, ERR_CNT_DWS_LOST);
1974 sphy->loss_of_dword_sync_count += reg_value;
1975
1976 /* phy reset problem */
1977 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no, ERR_CNT_RESET_PROB);
1978 sphy->phy_reset_problem_count += reg_value;
1979
1980 /* invalid dword */
1981 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no, ERR_CNT_INVLD_DW);
1982 sphy->invalid_dword_count += reg_value;
1983
1984 /* disparity err */
1985 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no, ERR_CNT_DISP_ERR);
1986 sphy->running_disparity_error_count += reg_value;
1987
1988 }
1989
1990 static int soft_reset_v3_hw(struct hisi_hba *hisi_hba)
1991 {
1992 struct device *dev = hisi_hba->dev;
1993 int rc;
1994 u32 status;
1995
1996 interrupt_disable_v3_hw(hisi_hba);
1997 hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0);
1998 hisi_sas_kill_tasklets(hisi_hba);
1999
2000 hisi_sas_stop_phys(hisi_hba);
2001
2002 mdelay(10);
2003
2004 hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + AM_CTRL_GLOBAL, 0x1);
2005
2006 /* wait until bus idle */
2007 rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE +
2008 AM_CURR_TRANS_RETURN, status,
2009 status == 0x3, 10, 100);
2010 if (rc) {
2011 dev_err(dev, "axi bus is not idle, rc = %d\n", rc);
2012 return rc;
2013 }
2014
2015 hisi_sas_init_mem(hisi_hba);
2016
2017 return hw_init_v3_hw(hisi_hba);
2018 }
2019
2020 static int write_gpio_v3_hw(struct hisi_hba *hisi_hba, u8 reg_type,
2021 u8 reg_index, u8 reg_count, u8 *write_data)
2022 {
2023 struct device *dev = hisi_hba->dev;
2024 u32 *data = (u32 *)write_data;
2025 int i;
2026
2027 switch (reg_type) {
2028 case SAS_GPIO_REG_TX:
2029 if ((reg_index + reg_count) > ((hisi_hba->n_phy + 3) / 4)) {
2030 dev_err(dev, "write gpio: invalid reg range[%d, %d]\n",
2031 reg_index, reg_index + reg_count - 1);
2032 return -EINVAL;
2033 }
2034
2035 for (i = 0; i < reg_count; i++)
2036 hisi_sas_write32(hisi_hba,
2037 SAS_GPIO_TX_0_1 + (reg_index + i) * 4,
2038 data[i]);
2039 break;
2040 default:
2041 dev_err(dev, "write gpio: unsupported or bad reg type %d\n",
2042 reg_type);
2043 return -EINVAL;
2044 }
2045
2046 return 0;
2047 }
2048
2049 static void wait_cmds_complete_timeout_v3_hw(struct hisi_hba *hisi_hba,
2050 int delay_ms, int timeout_ms)
2051 {
2052 struct device *dev = hisi_hba->dev;
2053 int entries, entries_old = 0, time;
2054
2055 for (time = 0; time < timeout_ms; time += delay_ms) {
2056 entries = hisi_sas_read32(hisi_hba, CQE_SEND_CNT);
2057 if (entries == entries_old)
2058 break;
2059
2060 entries_old = entries;
2061 msleep(delay_ms);
2062 }
2063
2064 dev_dbg(dev, "wait commands complete %dms\n", time);
2065 }
2066
2067 static struct scsi_host_template sht_v3_hw = {
2068 .name = DRV_NAME,
2069 .module = THIS_MODULE,
2070 .queuecommand = sas_queuecommand,
2071 .target_alloc = sas_target_alloc,
2072 .slave_configure = hisi_sas_slave_configure,
2073 .scan_finished = hisi_sas_scan_finished,
2074 .scan_start = hisi_sas_scan_start,
2075 .change_queue_depth = sas_change_queue_depth,
2076 .bios_param = sas_bios_param,
2077 .can_queue = 1,
2078 .this_id = -1,
2079 .sg_tablesize = SG_ALL,
2080 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
2081 .use_clustering = ENABLE_CLUSTERING,
2082 .eh_device_reset_handler = sas_eh_device_reset_handler,
2083 .eh_target_reset_handler = sas_eh_target_reset_handler,
2084 .target_destroy = sas_target_destroy,
2085 .ioctl = sas_ioctl,
2086 .shost_attrs = host_attrs,
2087 };
2088
2089 static const struct hisi_sas_hw hisi_sas_v3_hw = {
2090 .hw_init = hisi_sas_v3_init,
2091 .setup_itct = setup_itct_v3_hw,
2092 .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V3_HW,
2093 .get_wideport_bitmap = get_wideport_bitmap_v3_hw,
2094 .complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
2095 .clear_itct = clear_itct_v3_hw,
2096 .sl_notify = sl_notify_v3_hw,
2097 .prep_ssp = prep_ssp_v3_hw,
2098 .prep_smp = prep_smp_v3_hw,
2099 .prep_stp = prep_ata_v3_hw,
2100 .prep_abort = prep_abort_v3_hw,
2101 .get_free_slot = get_free_slot_v3_hw,
2102 .start_delivery = start_delivery_v3_hw,
2103 .slot_complete = slot_complete_v3_hw,
2104 .phys_init = phys_init_v3_hw,
2105 .phy_start = start_phy_v3_hw,
2106 .phy_disable = disable_phy_v3_hw,
2107 .phy_hard_reset = phy_hard_reset_v3_hw,
2108 .phy_get_max_linkrate = phy_get_max_linkrate_v3_hw,
2109 .phy_set_linkrate = phy_set_linkrate_v3_hw,
2110 .dereg_device = dereg_device_v3_hw,
2111 .soft_reset = soft_reset_v3_hw,
2112 .get_phys_state = get_phys_state_v3_hw,
2113 .get_events = phy_get_events_v3_hw,
2114 .write_gpio = write_gpio_v3_hw,
2115 .wait_cmds_complete_timeout = wait_cmds_complete_timeout_v3_hw,
2116 };
2117
2118 static struct Scsi_Host *
2119 hisi_sas_shost_alloc_pci(struct pci_dev *pdev)
2120 {
2121 struct Scsi_Host *shost;
2122 struct hisi_hba *hisi_hba;
2123 struct device *dev = &pdev->dev;
2124
2125 shost = scsi_host_alloc(&sht_v3_hw, sizeof(*hisi_hba));
2126 if (!shost) {
2127 dev_err(dev, "shost alloc failed\n");
2128 return NULL;
2129 }
2130 hisi_hba = shost_priv(shost);
2131
2132 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2133 hisi_hba->hw = &hisi_sas_v3_hw;
2134 hisi_hba->pci_dev = pdev;
2135 hisi_hba->dev = dev;
2136 hisi_hba->shost = shost;
2137 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2138
2139 timer_setup(&hisi_hba->timer, NULL, 0);
2140
2141 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2142 goto err_out;
2143
2144 if (hisi_sas_alloc(hisi_hba, shost)) {
2145 hisi_sas_free(hisi_hba);
2146 goto err_out;
2147 }
2148
2149 return shost;
2150 err_out:
2151 scsi_host_put(shost);
2152 dev_err(dev, "shost alloc failed\n");
2153 return NULL;
2154 }
2155
2156 static int
2157 hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2158 {
2159 struct Scsi_Host *shost;
2160 struct hisi_hba *hisi_hba;
2161 struct device *dev = &pdev->dev;
2162 struct asd_sas_phy **arr_phy;
2163 struct asd_sas_port **arr_port;
2164 struct sas_ha_struct *sha;
2165 int rc, phy_nr, port_nr, i;
2166
2167 rc = pci_enable_device(pdev);
2168 if (rc)
2169 goto err_out;
2170
2171 pci_set_master(pdev);
2172
2173 rc = pci_request_regions(pdev, DRV_NAME);
2174 if (rc)
2175 goto err_out_disable_device;
2176
2177 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) ||
2178 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)) {
2179 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
2180 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
2181 dev_err(dev, "No usable DMA addressing method\n");
2182 rc = -EIO;
2183 goto err_out_regions;
2184 }
2185 }
2186
2187 shost = hisi_sas_shost_alloc_pci(pdev);
2188 if (!shost) {
2189 rc = -ENOMEM;
2190 goto err_out_regions;
2191 }
2192
2193 sha = SHOST_TO_SAS_HA(shost);
2194 hisi_hba = shost_priv(shost);
2195 dev_set_drvdata(dev, sha);
2196
2197 hisi_hba->regs = pcim_iomap(pdev, 5, 0);
2198 if (!hisi_hba->regs) {
2199 dev_err(dev, "cannot map register.\n");
2200 rc = -ENOMEM;
2201 goto err_out_ha;
2202 }
2203
2204 phy_nr = port_nr = hisi_hba->n_phy;
2205
2206 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2207 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2208 if (!arr_phy || !arr_port) {
2209 rc = -ENOMEM;
2210 goto err_out_ha;
2211 }
2212
2213 sha->sas_phy = arr_phy;
2214 sha->sas_port = arr_port;
2215 sha->core.shost = shost;
2216 sha->lldd_ha = hisi_hba;
2217
2218 shost->transportt = hisi_sas_stt;
2219 shost->max_id = HISI_SAS_MAX_DEVICES;
2220 shost->max_lun = ~0;
2221 shost->max_channel = 1;
2222 shost->max_cmd_len = 16;
2223 shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
2224 shost->can_queue = hisi_hba->hw->max_command_entries;
2225 shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
2226
2227 sha->sas_ha_name = DRV_NAME;
2228 sha->dev = dev;
2229 sha->lldd_module = THIS_MODULE;
2230 sha->sas_addr = &hisi_hba->sas_addr[0];
2231 sha->num_phys = hisi_hba->n_phy;
2232 sha->core.shost = hisi_hba->shost;
2233
2234 for (i = 0; i < hisi_hba->n_phy; i++) {
2235 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2236 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2237 }
2238
2239 hisi_sas_init_add(hisi_hba);
2240
2241 rc = scsi_add_host(shost, dev);
2242 if (rc)
2243 goto err_out_ha;
2244
2245 rc = sas_register_ha(sha);
2246 if (rc)
2247 goto err_out_register_ha;
2248
2249 rc = hisi_hba->hw->hw_init(hisi_hba);
2250 if (rc)
2251 goto err_out_register_ha;
2252
2253 scsi_scan_host(shost);
2254
2255 return 0;
2256
2257 err_out_register_ha:
2258 scsi_remove_host(shost);
2259 err_out_ha:
2260 scsi_host_put(shost);
2261 err_out_regions:
2262 pci_release_regions(pdev);
2263 err_out_disable_device:
2264 pci_disable_device(pdev);
2265 err_out:
2266 return rc;
2267 }
2268
2269 static void
2270 hisi_sas_v3_destroy_irqs(struct pci_dev *pdev, struct hisi_hba *hisi_hba)
2271 {
2272 int i;
2273
2274 free_irq(pci_irq_vector(pdev, 1), hisi_hba);
2275 free_irq(pci_irq_vector(pdev, 2), hisi_hba);
2276 free_irq(pci_irq_vector(pdev, 11), hisi_hba);
2277 for (i = 0; i < hisi_hba->queue_count; i++) {
2278 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2279
2280 free_irq(pci_irq_vector(pdev, i+16), cq);
2281 }
2282 pci_free_irq_vectors(pdev);
2283 }
2284
2285 static void hisi_sas_v3_remove(struct pci_dev *pdev)
2286 {
2287 struct device *dev = &pdev->dev;
2288 struct sas_ha_struct *sha = dev_get_drvdata(dev);
2289 struct hisi_hba *hisi_hba = sha->lldd_ha;
2290 struct Scsi_Host *shost = sha->core.shost;
2291
2292 if (timer_pending(&hisi_hba->timer))
2293 del_timer(&hisi_hba->timer);
2294
2295 sas_unregister_ha(sha);
2296 sas_remove_host(sha->core.shost);
2297
2298 hisi_sas_v3_destroy_irqs(pdev, hisi_hba);
2299 hisi_sas_kill_tasklets(hisi_hba);
2300 pci_release_regions(pdev);
2301 pci_disable_device(pdev);
2302 hisi_sas_free(hisi_hba);
2303 scsi_host_put(shost);
2304 }
2305
2306 static const struct hisi_sas_hw_error sas_ras_intr0_nfe[] = {
2307 { .irq_msk = BIT(19), .msg = "HILINK_INT" },
2308 { .irq_msk = BIT(20), .msg = "HILINK_PLL0_OUT_OF_LOCK" },
2309 { .irq_msk = BIT(21), .msg = "HILINK_PLL1_OUT_OF_LOCK" },
2310 { .irq_msk = BIT(22), .msg = "HILINK_LOSS_OF_REFCLK0" },
2311 { .irq_msk = BIT(23), .msg = "HILINK_LOSS_OF_REFCLK1" },
2312 { .irq_msk = BIT(24), .msg = "DMAC0_TX_POISON" },
2313 { .irq_msk = BIT(25), .msg = "DMAC1_TX_POISON" },
2314 { .irq_msk = BIT(26), .msg = "DMAC2_TX_POISON" },
2315 { .irq_msk = BIT(27), .msg = "DMAC3_TX_POISON" },
2316 { .irq_msk = BIT(28), .msg = "DMAC4_TX_POISON" },
2317 { .irq_msk = BIT(29), .msg = "DMAC5_TX_POISON" },
2318 { .irq_msk = BIT(30), .msg = "DMAC6_TX_POISON" },
2319 { .irq_msk = BIT(31), .msg = "DMAC7_TX_POISON" },
2320 };
2321
2322 static const struct hisi_sas_hw_error sas_ras_intr1_nfe[] = {
2323 { .irq_msk = BIT(0), .msg = "RXM_CFG_MEM3_ECC2B_INTR" },
2324 { .irq_msk = BIT(1), .msg = "RXM_CFG_MEM2_ECC2B_INTR" },
2325 { .irq_msk = BIT(2), .msg = "RXM_CFG_MEM1_ECC2B_INTR" },
2326 { .irq_msk = BIT(3), .msg = "RXM_CFG_MEM0_ECC2B_INTR" },
2327 { .irq_msk = BIT(4), .msg = "HGC_CQE_ECC2B_INTR" },
2328 { .irq_msk = BIT(5), .msg = "LM_CFG_IOSTL_ECC2B_INTR" },
2329 { .irq_msk = BIT(6), .msg = "LM_CFG_ITCTL_ECC2B_INTR" },
2330 { .irq_msk = BIT(7), .msg = "HGC_ITCT_ECC2B_INTR" },
2331 { .irq_msk = BIT(8), .msg = "HGC_IOST_ECC2B_INTR" },
2332 { .irq_msk = BIT(9), .msg = "HGC_DQE_ECC2B_INTR" },
2333 { .irq_msk = BIT(10), .msg = "DMAC0_RAM_ECC2B_INTR" },
2334 { .irq_msk = BIT(11), .msg = "DMAC1_RAM_ECC2B_INTR" },
2335 { .irq_msk = BIT(12), .msg = "DMAC2_RAM_ECC2B_INTR" },
2336 { .irq_msk = BIT(13), .msg = "DMAC3_RAM_ECC2B_INTR" },
2337 { .irq_msk = BIT(14), .msg = "DMAC4_RAM_ECC2B_INTR" },
2338 { .irq_msk = BIT(15), .msg = "DMAC5_RAM_ECC2B_INTR" },
2339 { .irq_msk = BIT(16), .msg = "DMAC6_RAM_ECC2B_INTR" },
2340 { .irq_msk = BIT(17), .msg = "DMAC7_RAM_ECC2B_INTR" },
2341 { .irq_msk = BIT(18), .msg = "OOO_RAM_ECC2B_INTR" },
2342 { .irq_msk = BIT(20), .msg = "HGC_DQE_POISON_INTR" },
2343 { .irq_msk = BIT(21), .msg = "HGC_IOST_POISON_INTR" },
2344 { .irq_msk = BIT(22), .msg = "HGC_ITCT_POISON_INTR" },
2345 { .irq_msk = BIT(23), .msg = "HGC_ITCT_NCQ_POISON_INTR" },
2346 { .irq_msk = BIT(24), .msg = "DMAC0_RX_POISON" },
2347 { .irq_msk = BIT(25), .msg = "DMAC1_RX_POISON" },
2348 { .irq_msk = BIT(26), .msg = "DMAC2_RX_POISON" },
2349 { .irq_msk = BIT(27), .msg = "DMAC3_RX_POISON" },
2350 { .irq_msk = BIT(28), .msg = "DMAC4_RX_POISON" },
2351 { .irq_msk = BIT(29), .msg = "DMAC5_RX_POISON" },
2352 { .irq_msk = BIT(30), .msg = "DMAC6_RX_POISON" },
2353 { .irq_msk = BIT(31), .msg = "DMAC7_RX_POISON" },
2354 };
2355
2356 static const struct hisi_sas_hw_error sas_ras_intr2_nfe[] = {
2357 { .irq_msk = BIT(0), .msg = "DMAC0_AXI_BUS_ERR" },
2358 { .irq_msk = BIT(1), .msg = "DMAC1_AXI_BUS_ERR" },
2359 { .irq_msk = BIT(2), .msg = "DMAC2_AXI_BUS_ERR" },
2360 { .irq_msk = BIT(3), .msg = "DMAC3_AXI_BUS_ERR" },
2361 { .irq_msk = BIT(4), .msg = "DMAC4_AXI_BUS_ERR" },
2362 { .irq_msk = BIT(5), .msg = "DMAC5_AXI_BUS_ERR" },
2363 { .irq_msk = BIT(6), .msg = "DMAC6_AXI_BUS_ERR" },
2364 { .irq_msk = BIT(7), .msg = "DMAC7_AXI_BUS_ERR" },
2365 { .irq_msk = BIT(8), .msg = "DMAC0_FIFO_OMIT_ERR" },
2366 { .irq_msk = BIT(9), .msg = "DMAC1_FIFO_OMIT_ERR" },
2367 { .irq_msk = BIT(10), .msg = "DMAC2_FIFO_OMIT_ERR" },
2368 { .irq_msk = BIT(11), .msg = "DMAC3_FIFO_OMIT_ERR" },
2369 { .irq_msk = BIT(12), .msg = "DMAC4_FIFO_OMIT_ERR" },
2370 { .irq_msk = BIT(13), .msg = "DMAC5_FIFO_OMIT_ERR" },
2371 { .irq_msk = BIT(14), .msg = "DMAC6_FIFO_OMIT_ERR" },
2372 { .irq_msk = BIT(15), .msg = "DMAC7_FIFO_OMIT_ERR" },
2373 { .irq_msk = BIT(16), .msg = "HGC_RLSE_SLOT_UNMATCH" },
2374 { .irq_msk = BIT(17), .msg = "HGC_LM_ADD_FCH_LIST_ERR" },
2375 { .irq_msk = BIT(18), .msg = "HGC_AXI_BUS_ERR" },
2376 { .irq_msk = BIT(19), .msg = "HGC_FIFO_OMIT_ERR" },
2377 };
2378
2379 static bool process_non_fatal_error_v3_hw(struct hisi_hba *hisi_hba)
2380 {
2381 struct device *dev = hisi_hba->dev;
2382 const struct hisi_sas_hw_error *ras_error;
2383 bool need_reset = false;
2384 u32 irq_value;
2385 int i;
2386
2387 irq_value = hisi_sas_read32(hisi_hba, SAS_RAS_INTR0);
2388 for (i = 0; i < ARRAY_SIZE(sas_ras_intr0_nfe); i++) {
2389 ras_error = &sas_ras_intr0_nfe[i];
2390 if (ras_error->irq_msk & irq_value) {
2391 dev_warn(dev, "SAS_RAS_INTR0: %s(irq_value=0x%x) found.\n",
2392 ras_error->msg, irq_value);
2393 need_reset = true;
2394 }
2395 }
2396 hisi_sas_write32(hisi_hba, SAS_RAS_INTR0, irq_value);
2397
2398 irq_value = hisi_sas_read32(hisi_hba, SAS_RAS_INTR1);
2399 for (i = 0; i < ARRAY_SIZE(sas_ras_intr1_nfe); i++) {
2400 ras_error = &sas_ras_intr1_nfe[i];
2401 if (ras_error->irq_msk & irq_value) {
2402 dev_warn(dev, "SAS_RAS_INTR1: %s(irq_value=0x%x) found.\n",
2403 ras_error->msg, irq_value);
2404 need_reset = true;
2405 }
2406 }
2407 hisi_sas_write32(hisi_hba, SAS_RAS_INTR1, irq_value);
2408
2409 irq_value = hisi_sas_read32(hisi_hba, SAS_RAS_INTR2);
2410 for (i = 0; i < ARRAY_SIZE(sas_ras_intr2_nfe); i++) {
2411 ras_error = &sas_ras_intr2_nfe[i];
2412 if (ras_error->irq_msk & irq_value) {
2413 dev_warn(dev, "SAS_RAS_INTR2: %s(irq_value=0x%x) found.\n",
2414 ras_error->msg, irq_value);
2415 need_reset = true;
2416 }
2417 }
2418 hisi_sas_write32(hisi_hba, SAS_RAS_INTR2, irq_value);
2419
2420 return need_reset;
2421 }
2422
2423 static pci_ers_result_t hisi_sas_error_detected_v3_hw(struct pci_dev *pdev,
2424 pci_channel_state_t state)
2425 {
2426 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
2427 struct hisi_hba *hisi_hba = sha->lldd_ha;
2428 struct device *dev = hisi_hba->dev;
2429
2430 dev_info(dev, "PCI error: detected callback, state(%d)!!\n", state);
2431 if (state == pci_channel_io_perm_failure)
2432 return PCI_ERS_RESULT_DISCONNECT;
2433
2434 if (process_non_fatal_error_v3_hw(hisi_hba))
2435 return PCI_ERS_RESULT_NEED_RESET;
2436
2437 return PCI_ERS_RESULT_CAN_RECOVER;
2438 }
2439
2440 static pci_ers_result_t hisi_sas_mmio_enabled_v3_hw(struct pci_dev *pdev)
2441 {
2442 return PCI_ERS_RESULT_RECOVERED;
2443 }
2444
2445 static pci_ers_result_t hisi_sas_slot_reset_v3_hw(struct pci_dev *pdev)
2446 {
2447 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
2448 struct hisi_hba *hisi_hba = sha->lldd_ha;
2449 struct device *dev = hisi_hba->dev;
2450 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
2451
2452 dev_info(dev, "PCI error: slot reset callback!!\n");
2453 queue_work(hisi_hba->wq, &r.work);
2454 wait_for_completion(r.completion);
2455 if (r.done)
2456 return PCI_ERS_RESULT_RECOVERED;
2457
2458 return PCI_ERS_RESULT_DISCONNECT;
2459 }
2460
2461 enum {
2462 /* instances of the controller */
2463 hip08,
2464 };
2465
2466 static int hisi_sas_v3_suspend(struct pci_dev *pdev, pm_message_t state)
2467 {
2468 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
2469 struct hisi_hba *hisi_hba = sha->lldd_ha;
2470 struct device *dev = hisi_hba->dev;
2471 struct Scsi_Host *shost = hisi_hba->shost;
2472 u32 device_state, status;
2473 int rc;
2474 u32 reg_val;
2475
2476 if (!pdev->pm_cap) {
2477 dev_err(dev, "PCI PM not supported\n");
2478 return -ENODEV;
2479 }
2480
2481 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
2482 return -1;
2483
2484 scsi_block_requests(shost);
2485 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
2486 flush_workqueue(hisi_hba->wq);
2487 /* disable DQ/PHY/bus */
2488 interrupt_disable_v3_hw(hisi_hba);
2489 hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0);
2490 hisi_sas_kill_tasklets(hisi_hba);
2491
2492 hisi_sas_stop_phys(hisi_hba);
2493
2494 reg_val = hisi_sas_read32(hisi_hba, AXI_MASTER_CFG_BASE +
2495 AM_CTRL_GLOBAL);
2496 reg_val |= 0x1;
2497 hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE +
2498 AM_CTRL_GLOBAL, reg_val);
2499
2500 /* wait until bus idle */
2501 rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE +
2502 AM_CURR_TRANS_RETURN, status,
2503 status == 0x3, 10, 100);
2504 if (rc) {
2505 dev_err(dev, "axi bus is not idle, rc = %d\n", rc);
2506 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
2507 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
2508 scsi_unblock_requests(shost);
2509 return rc;
2510 }
2511
2512 hisi_sas_init_mem(hisi_hba);
2513
2514 device_state = pci_choose_state(pdev, state);
2515 dev_warn(dev, "entering operating state [D%d]\n",
2516 device_state);
2517 pci_save_state(pdev);
2518 pci_disable_device(pdev);
2519 pci_set_power_state(pdev, device_state);
2520
2521 hisi_sas_release_tasks(hisi_hba);
2522
2523 sas_suspend_ha(sha);
2524 return 0;
2525 }
2526
2527 static int hisi_sas_v3_resume(struct pci_dev *pdev)
2528 {
2529 struct sas_ha_struct *sha = pci_get_drvdata(pdev);
2530 struct hisi_hba *hisi_hba = sha->lldd_ha;
2531 struct Scsi_Host *shost = hisi_hba->shost;
2532 struct device *dev = hisi_hba->dev;
2533 unsigned int rc;
2534 u32 device_state = pdev->current_state;
2535
2536 dev_warn(dev, "resuming from operating state [D%d]\n",
2537 device_state);
2538 pci_set_power_state(pdev, PCI_D0);
2539 pci_enable_wake(pdev, PCI_D0, 0);
2540 pci_restore_state(pdev);
2541 rc = pci_enable_device(pdev);
2542 if (rc)
2543 dev_err(dev, "enable device failed during resume (%d)\n", rc);
2544
2545 pci_set_master(pdev);
2546 scsi_unblock_requests(shost);
2547 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
2548
2549 sas_prep_resume_ha(sha);
2550 init_reg_v3_hw(hisi_hba);
2551 hisi_hba->hw->phys_init(hisi_hba);
2552 sas_resume_ha(sha);
2553 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
2554
2555 return 0;
2556 }
2557
2558 static const struct pci_device_id sas_v3_pci_table[] = {
2559 { PCI_VDEVICE(HUAWEI, 0xa230), hip08 },
2560 {}
2561 };
2562 MODULE_DEVICE_TABLE(pci, sas_v3_pci_table);
2563
2564 static const struct pci_error_handlers hisi_sas_err_handler = {
2565 .error_detected = hisi_sas_error_detected_v3_hw,
2566 .mmio_enabled = hisi_sas_mmio_enabled_v3_hw,
2567 .slot_reset = hisi_sas_slot_reset_v3_hw,
2568 };
2569
2570 static struct pci_driver sas_v3_pci_driver = {
2571 .name = DRV_NAME,
2572 .id_table = sas_v3_pci_table,
2573 .probe = hisi_sas_v3_probe,
2574 .remove = hisi_sas_v3_remove,
2575 .suspend = hisi_sas_v3_suspend,
2576 .resume = hisi_sas_v3_resume,
2577 .err_handler = &hisi_sas_err_handler,
2578 };
2579
2580 module_pci_driver(sas_v3_pci_driver);
2581
2582 MODULE_LICENSE("GPL");
2583 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2584 MODULE_DESCRIPTION("HISILICON SAS controller v3 hw driver based on pci device");
2585 MODULE_ALIAS("pci:" DRV_NAME);
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