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c21e0bbf MO |
1 | /* |
2 | * CXL Flash Device Driver | |
3 | * | |
4 | * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation | |
5 | * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation | |
6 | * | |
7 | * Copyright (C) 2015 IBM Corporation | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version | |
12 | * 2 of the License, or (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #ifndef _SISLITE_H | |
16 | #define _SISLITE_H | |
17 | ||
18 | #include <linux/types.h> | |
19 | ||
20 | typedef u16 ctx_hndl_t; | |
21 | typedef u32 res_hndl_t; | |
22 | ||
23 | #define SIZE_4K 4096 | |
24 | #define SIZE_64K 65536 | |
25 | ||
26 | /* | |
27 | * IOARCB: 64 bytes, min 16 byte alignment required, host native endianness | |
28 | * except for SCSI CDB which remains big endian per SCSI standards. | |
29 | */ | |
30 | struct sisl_ioarcb { | |
31 | u16 ctx_id; /* ctx_hndl_t */ | |
32 | u16 req_flags; | |
33 | #define SISL_REQ_FLAGS_RES_HNDL 0x8000U /* bit 0 (MSB) */ | |
34 | #define SISL_REQ_FLAGS_PORT_LUN_ID 0x0000U | |
35 | ||
36 | #define SISL_REQ_FLAGS_SUP_UNDERRUN 0x4000U /* bit 1 */ | |
37 | ||
38 | #define SISL_REQ_FLAGS_TIMEOUT_SECS 0x0000U /* bits 8,9 */ | |
39 | #define SISL_REQ_FLAGS_TIMEOUT_MSECS 0x0040U | |
40 | #define SISL_REQ_FLAGS_TIMEOUT_USECS 0x0080U | |
41 | #define SISL_REQ_FLAGS_TIMEOUT_CYCLES 0x00C0U | |
42 | ||
43 | #define SISL_REQ_FLAGS_TMF_CMD 0x0004u /* bit 13 */ | |
44 | ||
45 | #define SISL_REQ_FLAGS_AFU_CMD 0x0002U /* bit 14 */ | |
46 | ||
47 | #define SISL_REQ_FLAGS_HOST_WRITE 0x0001U /* bit 15 (LSB) */ | |
48 | #define SISL_REQ_FLAGS_HOST_READ 0x0000U | |
49 | ||
50 | union { | |
51 | u32 res_hndl; /* res_hndl_t */ | |
52 | u32 port_sel; /* this is a selection mask: | |
53 | * 0x1 -> port#0 can be selected, | |
54 | * 0x2 -> port#1 can be selected. | |
55 | * Can be bitwise ORed. | |
56 | */ | |
57 | }; | |
58 | u64 lun_id; | |
59 | u32 data_len; /* 4K for read/write */ | |
60 | u32 ioadl_len; | |
61 | union { | |
62 | u64 data_ea; /* min 16 byte aligned */ | |
63 | u64 ioadl_ea; | |
64 | }; | |
65 | u8 msi; /* LISN to send on RRQ write */ | |
66 | #define SISL_MSI_CXL_PFAULT 0 /* reserved for CXL page faults */ | |
67 | #define SISL_MSI_SYNC_ERROR 1 /* recommended for AFU sync error */ | |
68 | #define SISL_MSI_RRQ_UPDATED 2 /* recommended for IO completion */ | |
69 | #define SISL_MSI_ASYNC_ERROR 3 /* master only - for AFU async error */ | |
70 | ||
71 | u8 rrq; /* 0 for a single RRQ */ | |
72 | u16 timeout; /* in units specified by req_flags */ | |
73 | u32 rsvd1; | |
74 | u8 cdb[16]; /* must be in big endian */ | |
bae0ac69 MO |
75 | union { |
76 | u64 reserved; /* Reserved for IOARRIN mode */ | |
77 | struct sisl_ioasa *ioasa; /* IOASA EA for SQ Mode */ | |
78 | }; | |
c21e0bbf MO |
79 | } __packed; |
80 | ||
81 | struct sisl_rc { | |
82 | u8 flags; | |
83 | #define SISL_RC_FLAGS_SENSE_VALID 0x80U | |
84 | #define SISL_RC_FLAGS_FCP_RSP_CODE_VALID 0x40U | |
85 | #define SISL_RC_FLAGS_OVERRUN 0x20U | |
86 | #define SISL_RC_FLAGS_UNDERRUN 0x10U | |
87 | ||
88 | u8 afu_rc; | |
89 | #define SISL_AFU_RC_RHT_INVALID 0x01U /* user error */ | |
90 | #define SISL_AFU_RC_RHT_UNALIGNED 0x02U /* should never happen */ | |
91 | #define SISL_AFU_RC_RHT_OUT_OF_BOUNDS 0x03u /* user error */ | |
92 | #define SISL_AFU_RC_RHT_DMA_ERR 0x04u /* see afu_extra | |
93 | may retry if afu_retry is off | |
94 | possible on master exit | |
95 | */ | |
96 | #define SISL_AFU_RC_RHT_RW_PERM 0x05u /* no RW perms, user error */ | |
97 | #define SISL_AFU_RC_LXT_UNALIGNED 0x12U /* should never happen */ | |
98 | #define SISL_AFU_RC_LXT_OUT_OF_BOUNDS 0x13u /* user error */ | |
99 | #define SISL_AFU_RC_LXT_DMA_ERR 0x14u /* see afu_extra | |
100 | may retry if afu_retry is off | |
101 | possible on master exit | |
102 | */ | |
103 | #define SISL_AFU_RC_LXT_RW_PERM 0x15u /* no RW perms, user error */ | |
104 | ||
105 | #define SISL_AFU_RC_NOT_XLATE_HOST 0x1au /* possible if master exited */ | |
106 | ||
107 | /* NO_CHANNELS means the FC ports selected by dest_port in | |
108 | * IOARCB or in the LXT entry are down when the AFU tried to select | |
109 | * a FC port. If the port went down on an active IO, it will set | |
110 | * fc_rc to =0x54(NOLOGI) or 0x57(LINKDOWN) instead. | |
111 | */ | |
112 | #define SISL_AFU_RC_NO_CHANNELS 0x20U /* see afu_extra, may retry */ | |
113 | #define SISL_AFU_RC_CAP_VIOLATION 0x21U /* either user error or | |
114 | afu reset/master restart | |
115 | */ | |
116 | #define SISL_AFU_RC_OUT_OF_DATA_BUFS 0x30U /* always retry */ | |
117 | #define SISL_AFU_RC_DATA_DMA_ERR 0x31U /* see afu_extra | |
118 | may retry if afu_retry is off | |
119 | */ | |
120 | ||
121 | u8 scsi_rc; /* SCSI status byte, retry as appropriate */ | |
122 | #define SISL_SCSI_RC_CHECK 0x02U | |
123 | #define SISL_SCSI_RC_BUSY 0x08u | |
124 | ||
125 | u8 fc_rc; /* retry */ | |
126 | /* | |
127 | * We should only see fc_rc=0x57 (LINKDOWN) or 0x54(NOLOGI) for | |
128 | * commands that are in flight when a link goes down or is logged out. | |
129 | * If the link is down or logged out before AFU selects the port, either | |
130 | * it will choose the other port or we will get afu_rc=0x20 (no_channel) | |
131 | * if there is no valid port to use. | |
132 | * | |
133 | * ABORTPEND/ABORTOK/ABORTFAIL/TGTABORT can be retried, typically these | |
134 | * would happen if a frame is dropped and something times out. | |
135 | * NOLOGI or LINKDOWN can be retried if the other port is up. | |
136 | * RESIDERR can be retried as well. | |
137 | * | |
138 | * ABORTFAIL might indicate that lots of frames are getting CRC errors. | |
139 | * So it maybe retried once and reset the link if it happens again. | |
140 | * The link can also be reset on the CRC error threshold interrupt. | |
141 | */ | |
142 | #define SISL_FC_RC_ABORTPEND 0x52 /* exchange timeout or abort request */ | |
143 | #define SISL_FC_RC_WRABORTPEND 0x53 /* due to write XFER_RDY invalid */ | |
144 | #define SISL_FC_RC_NOLOGI 0x54 /* port not logged in, in-flight cmds */ | |
145 | #define SISL_FC_RC_NOEXP 0x55 /* FC protocol error or HW bug */ | |
146 | #define SISL_FC_RC_INUSE 0x56 /* tag already in use, HW bug */ | |
147 | #define SISL_FC_RC_LINKDOWN 0x57 /* link down, in-flight cmds */ | |
148 | #define SISL_FC_RC_ABORTOK 0x58 /* pending abort completed w/success */ | |
149 | #define SISL_FC_RC_ABORTFAIL 0x59 /* pending abort completed w/fail */ | |
150 | #define SISL_FC_RC_RESID 0x5A /* ioasa underrun/overrun flags set */ | |
151 | #define SISL_FC_RC_RESIDERR 0x5B /* actual data len does not match SCSI | |
f15fbf8d | 152 | reported len, possibly due to dropped |
c21e0bbf MO |
153 | frames */ |
154 | #define SISL_FC_RC_TGTABORT 0x5C /* command aborted by target */ | |
155 | }; | |
156 | ||
157 | #define SISL_SENSE_DATA_LEN 20 /* Sense data length */ | |
158 | ||
159 | /* | |
160 | * IOASA: 64 bytes & must follow IOARCB, min 16 byte alignment required, | |
161 | * host native endianness | |
162 | */ | |
163 | struct sisl_ioasa { | |
164 | union { | |
165 | struct sisl_rc rc; | |
166 | u32 ioasc; | |
167 | #define SISL_IOASC_GOOD_COMPLETION 0x00000000U | |
168 | }; | |
169 | u32 resid; | |
170 | u8 port; | |
171 | u8 afu_extra; | |
172 | /* when afu_rc=0x04, 0x14, 0x31 (_xxx_DMA_ERR): | |
173 | * afu_exta contains PSL response code. Useful codes are: | |
174 | */ | |
175 | #define SISL_AFU_DMA_ERR_PAGE_IN 0x0A /* AFU_retry_on_pagein Action | |
176 | * Enabled N/A | |
177 | * Disabled retry | |
178 | */ | |
179 | #define SISL_AFU_DMA_ERR_INVALID_EA 0x0B /* this is a hard error | |
180 | * afu_rc Implies | |
181 | * 0x04, 0x14 master exit. | |
182 | * 0x31 user error. | |
183 | */ | |
184 | /* when afu rc=0x20 (no channels): | |
185 | * afu_extra bits [4:5]: available portmask, [6:7]: requested portmask. | |
186 | */ | |
187 | #define SISL_AFU_NO_CLANNELS_AMASK(afu_extra) (((afu_extra) & 0x0C) >> 2) | |
188 | #define SISL_AFU_NO_CLANNELS_RMASK(afu_extra) ((afu_extra) & 0x03) | |
189 | ||
190 | u8 scsi_extra; | |
191 | u8 fc_extra; | |
192 | u8 sense_data[SISL_SENSE_DATA_LEN]; | |
193 | ||
194 | /* These fields are defined by the SISlite architecture for the | |
195 | * host to use as they see fit for their implementation. | |
196 | */ | |
197 | union { | |
198 | u64 host_use[4]; | |
199 | u8 host_use_b[32]; | |
200 | }; | |
201 | } __packed; | |
202 | ||
203 | #define SISL_RESP_HANDLE_T_BIT 0x1ULL /* Toggle bit */ | |
204 | ||
205 | /* MMIO space is required to support only 64-bit access */ | |
206 | ||
207 | /* | |
208 | * This AFU has two mechanisms to deal with endian-ness. | |
209 | * One is a global configuration (in the afu_config) register | |
210 | * below that specifies the endian-ness of the host. | |
211 | * The other is a per context (i.e. application) specification | |
212 | * controlled by the endian_ctrl field here. Since the master | |
213 | * context is one such application the master context's | |
214 | * endian-ness is set to be the same as the host. | |
215 | * | |
216 | * As per the SISlite spec, the MMIO registers are always | |
217 | * big endian. | |
218 | */ | |
219 | #define SISL_ENDIAN_CTRL_BE 0x8000000000000080ULL | |
220 | #define SISL_ENDIAN_CTRL_LE 0x0000000000000000ULL | |
221 | ||
222 | #ifdef __BIG_ENDIAN | |
223 | #define SISL_ENDIAN_CTRL SISL_ENDIAN_CTRL_BE | |
224 | #else | |
225 | #define SISL_ENDIAN_CTRL SISL_ENDIAN_CTRL_LE | |
226 | #endif | |
227 | ||
228 | /* per context host transport MMIO */ | |
229 | struct sisl_host_map { | |
230 | __be64 endian_ctrl; /* Per context Endian Control. The AFU will | |
231 | * operate on whatever the context is of the | |
232 | * host application. | |
233 | */ | |
234 | ||
235 | __be64 intr_status; /* this sends LISN# programmed in ctx_ctrl. | |
236 | * Only recovery in a PERM_ERR is a context | |
237 | * exit since there is no way to tell which | |
238 | * command caused the error. | |
239 | */ | |
240 | #define SISL_ISTATUS_PERM_ERR_CMDROOM 0x0010ULL /* b59, user error */ | |
241 | #define SISL_ISTATUS_PERM_ERR_RCB_READ 0x0008ULL /* b60, user error */ | |
242 | #define SISL_ISTATUS_PERM_ERR_SA_WRITE 0x0004ULL /* b61, user error */ | |
243 | #define SISL_ISTATUS_PERM_ERR_RRQ_WRITE 0x0002ULL /* b62, user error */ | |
244 | /* Page in wait accessing RCB/IOASA/RRQ is reported in b63. | |
245 | * Same error in data/LXT/RHT access is reported via IOASA. | |
246 | */ | |
247 | #define SISL_ISTATUS_TEMP_ERR_PAGEIN 0x0001ULL /* b63, can be generated | |
248 | * only when AFU auto | |
249 | * retry is disabled. | |
250 | * If user can determine | |
251 | * the command that | |
252 | * caused the error, it | |
253 | * can be retried. | |
254 | */ | |
255 | #define SISL_ISTATUS_UNMASK (0x001FULL) /* 1 means unmasked */ | |
256 | #define SISL_ISTATUS_MASK ~(SISL_ISTATUS_UNMASK) /* 1 means masked */ | |
257 | ||
258 | __be64 intr_clear; | |
259 | __be64 intr_mask; | |
260 | __be64 ioarrin; /* only write what cmd_room permits */ | |
261 | __be64 rrq_start; /* start & end are both inclusive */ | |
262 | __be64 rrq_end; /* write sequence: start followed by end */ | |
263 | __be64 cmd_room; | |
f15fbf8d | 264 | __be64 ctx_ctrl; /* least significant byte or b56:63 is LISN# */ |
c21e0bbf | 265 | __be64 mbox_w; /* restricted use */ |
bae0ac69 MO |
266 | __be64 sq_start; /* Submission Queue (R/W): write sequence and */ |
267 | __be64 sq_end; /* inclusion semantics are the same as RRQ */ | |
268 | __be64 sq_head; /* Submission Queue Head (R): for debugging */ | |
269 | __be64 sq_tail; /* Submission Queue TAIL (R/W): next IOARCB */ | |
270 | __be64 sq_ctx_reset; /* Submission Queue Context Reset (R/W) */ | |
c21e0bbf MO |
271 | }; |
272 | ||
273 | /* per context provisioning & control MMIO */ | |
274 | struct sisl_ctrl_map { | |
275 | __be64 rht_start; | |
276 | __be64 rht_cnt_id; | |
277 | /* both cnt & ctx_id args must be ULL */ | |
278 | #define SISL_RHT_CNT_ID(cnt, ctx_id) (((cnt) << 48) | ((ctx_id) << 32)) | |
279 | ||
280 | __be64 ctx_cap; /* afu_rc below is when the capability is violated */ | |
281 | #define SISL_CTX_CAP_PROXY_ISSUE 0x8000000000000000ULL /* afu_rc 0x21 */ | |
282 | #define SISL_CTX_CAP_REAL_MODE 0x4000000000000000ULL /* afu_rc 0x21 */ | |
283 | #define SISL_CTX_CAP_HOST_XLATE 0x2000000000000000ULL /* afu_rc 0x1a */ | |
284 | #define SISL_CTX_CAP_PROXY_TARGET 0x1000000000000000ULL /* afu_rc 0x21 */ | |
285 | #define SISL_CTX_CAP_AFU_CMD 0x0000000000000008ULL /* afu_rc 0x21 */ | |
286 | #define SISL_CTX_CAP_GSCSI_CMD 0x0000000000000004ULL /* afu_rc 0x21 */ | |
287 | #define SISL_CTX_CAP_WRITE_CMD 0x0000000000000002ULL /* afu_rc 0x21 */ | |
288 | #define SISL_CTX_CAP_READ_CMD 0x0000000000000001ULL /* afu_rc 0x21 */ | |
289 | __be64 mbox_r; | |
290 | }; | |
291 | ||
292 | /* single copy global regs */ | |
293 | struct sisl_global_regs { | |
294 | __be64 aintr_status; | |
a290b480 MO |
295 | /* |
296 | * In cxlflash, FC port/link are arranged in port pairs, each | |
297 | * gets a byte of status: | |
298 | * | |
299 | * *_OTHER: other err, FC_ERRCAP[31:20] | |
300 | * *_LOGO: target sent FLOGI/PLOGI/LOGO while logged in | |
301 | * *_CRC_T: CRC threshold exceeded | |
302 | * *_LOGI_R: login state machine timed out and retrying | |
303 | * *_LOGI_F: login failed, FC_ERROR[19:0] | |
304 | * *_LOGI_S: login succeeded | |
305 | * *_LINK_DN: link online to offline | |
306 | * *_LINK_UP: link offline to online | |
307 | */ | |
308 | #define SISL_ASTATUS_FC2_OTHER 0x80000000ULL /* b32 */ | |
309 | #define SISL_ASTATUS_FC2_LOGO 0x40000000ULL /* b33 */ | |
310 | #define SISL_ASTATUS_FC2_CRC_T 0x20000000ULL /* b34 */ | |
311 | #define SISL_ASTATUS_FC2_LOGI_R 0x10000000ULL /* b35 */ | |
312 | #define SISL_ASTATUS_FC2_LOGI_F 0x08000000ULL /* b36 */ | |
313 | #define SISL_ASTATUS_FC2_LOGI_S 0x04000000ULL /* b37 */ | |
314 | #define SISL_ASTATUS_FC2_LINK_DN 0x02000000ULL /* b38 */ | |
315 | #define SISL_ASTATUS_FC2_LINK_UP 0x01000000ULL /* b39 */ | |
316 | ||
317 | #define SISL_ASTATUS_FC3_OTHER 0x00800000ULL /* b40 */ | |
318 | #define SISL_ASTATUS_FC3_LOGO 0x00400000ULL /* b41 */ | |
319 | #define SISL_ASTATUS_FC3_CRC_T 0x00200000ULL /* b42 */ | |
320 | #define SISL_ASTATUS_FC3_LOGI_R 0x00100000ULL /* b43 */ | |
321 | #define SISL_ASTATUS_FC3_LOGI_F 0x00080000ULL /* b44 */ | |
322 | #define SISL_ASTATUS_FC3_LOGI_S 0x00040000ULL /* b45 */ | |
323 | #define SISL_ASTATUS_FC3_LINK_DN 0x00020000ULL /* b46 */ | |
324 | #define SISL_ASTATUS_FC3_LINK_UP 0x00010000ULL /* b47 */ | |
325 | ||
326 | #define SISL_ASTATUS_FC0_OTHER 0x00008000ULL /* b48 */ | |
327 | #define SISL_ASTATUS_FC0_LOGO 0x00004000ULL /* b49 */ | |
328 | #define SISL_ASTATUS_FC0_CRC_T 0x00002000ULL /* b50 */ | |
329 | #define SISL_ASTATUS_FC0_LOGI_R 0x00001000ULL /* b51 */ | |
330 | #define SISL_ASTATUS_FC0_LOGI_F 0x00000800ULL /* b52 */ | |
331 | #define SISL_ASTATUS_FC0_LOGI_S 0x00000400ULL /* b53 */ | |
332 | #define SISL_ASTATUS_FC0_LINK_DN 0x00000200ULL /* b54 */ | |
333 | #define SISL_ASTATUS_FC0_LINK_UP 0x00000100ULL /* b55 */ | |
334 | ||
335 | #define SISL_ASTATUS_FC1_OTHER 0x00000080ULL /* b56 */ | |
336 | #define SISL_ASTATUS_FC1_LOGO 0x00000040ULL /* b57 */ | |
337 | #define SISL_ASTATUS_FC1_CRC_T 0x00000020ULL /* b58 */ | |
338 | #define SISL_ASTATUS_FC1_LOGI_R 0x00000010ULL /* b59 */ | |
339 | #define SISL_ASTATUS_FC1_LOGI_F 0x00000008ULL /* b60 */ | |
340 | #define SISL_ASTATUS_FC1_LOGI_S 0x00000004ULL /* b61 */ | |
341 | #define SISL_ASTATUS_FC1_LINK_DN 0x00000002ULL /* b62 */ | |
342 | #define SISL_ASTATUS_FC1_LINK_UP 0x00000001ULL /* b63 */ | |
c21e0bbf MO |
343 | |
344 | #define SISL_FC_INTERNAL_UNMASK 0x0000000300000000ULL /* 1 means unmasked */ | |
345 | #define SISL_FC_INTERNAL_MASK ~(SISL_FC_INTERNAL_UNMASK) | |
346 | #define SISL_FC_INTERNAL_SHIFT 32 | |
347 | ||
704c4b0d UK |
348 | #define SISL_FC_SHUTDOWN_NORMAL 0x0000000000000010ULL |
349 | #define SISL_FC_SHUTDOWN_ABRUPT 0x0000000000000020ULL | |
350 | ||
351 | #define SISL_STATUS_SHUTDOWN_ACTIVE 0x0000000000000010ULL | |
352 | #define SISL_STATUS_SHUTDOWN_COMPLETE 0x0000000000000020ULL | |
353 | ||
a290b480 | 354 | #define SISL_ASTATUS_UNMASK 0xFFFFFFFFULL /* 1 means unmasked */ |
c21e0bbf MO |
355 | #define SISL_ASTATUS_MASK ~(SISL_ASTATUS_UNMASK) /* 1 means masked */ |
356 | ||
357 | __be64 aintr_clear; | |
358 | __be64 aintr_mask; | |
359 | __be64 afu_ctrl; | |
360 | __be64 afu_hb; | |
361 | __be64 afu_scratch_pad; | |
362 | __be64 afu_port_sel; | |
363 | #define SISL_AFUCONF_AR_IOARCB 0x4000ULL | |
364 | #define SISL_AFUCONF_AR_LXT 0x2000ULL | |
365 | #define SISL_AFUCONF_AR_RHT 0x1000ULL | |
366 | #define SISL_AFUCONF_AR_DATA 0x0800ULL | |
367 | #define SISL_AFUCONF_AR_RSRC 0x0400ULL | |
368 | #define SISL_AFUCONF_AR_IOASA 0x0200ULL | |
369 | #define SISL_AFUCONF_AR_RRQ 0x0100ULL | |
370 | /* Aggregate all Auto Retry Bits */ | |
371 | #define SISL_AFUCONF_AR_ALL (SISL_AFUCONF_AR_IOARCB|SISL_AFUCONF_AR_LXT| \ | |
372 | SISL_AFUCONF_AR_RHT|SISL_AFUCONF_AR_DATA| \ | |
373 | SISL_AFUCONF_AR_RSRC|SISL_AFUCONF_AR_IOASA| \ | |
374 | SISL_AFUCONF_AR_RRQ) | |
375 | #ifdef __BIG_ENDIAN | |
376 | #define SISL_AFUCONF_ENDIAN 0x0000ULL | |
377 | #else | |
378 | #define SISL_AFUCONF_ENDIAN 0x0020ULL | |
379 | #endif | |
380 | #define SISL_AFUCONF_MBOX_CLR_READ 0x0010ULL | |
381 | __be64 afu_config; | |
382 | __be64 rsvd[0xf8]; | |
e5ce067b | 383 | __le64 afu_version; |
c21e0bbf | 384 | __be64 interface_version; |
bae0ac69 MO |
385 | #define SISL_INTVER_CAP_SHIFT 16 |
386 | #define SISL_INTVER_MAJ_SHIFT 8 | |
387 | #define SISL_INTVER_CAP_MASK 0xFFFFFFFF00000000ULL | |
388 | #define SISL_INTVER_MAJ_MASK 0x00000000FFFF0000ULL | |
389 | #define SISL_INTVER_MIN_MASK 0x000000000000FFFFULL | |
390 | #define SISL_INTVER_CAP_IOARRIN_CMD_MODE 0x800000000000ULL | |
391 | #define SISL_INTVER_CAP_SQ_CMD_MODE 0x400000000000ULL | |
392 | #define SISL_INTVER_CAP_RESERVED_CMD_MODE_A 0x200000000000ULL | |
393 | #define SISL_INTVER_CAP_RESERVED_CMD_MODE_B 0x100000000000ULL | |
c21e0bbf MO |
394 | }; |
395 | ||
a290b480 | 396 | #define CXLFLASH_NUM_FC_PORTS_PER_BANK 2 /* fixed # of ports per bank */ |
bdcff1c5 | 397 | #define CXLFLASH_MAX_FC_BANKS 2 /* max # of banks supported */ |
a290b480 MO |
398 | #define CXLFLASH_MAX_FC_PORTS (CXLFLASH_NUM_FC_PORTS_PER_BANK * \ |
399 | CXLFLASH_MAX_FC_BANKS) | |
400 | #define CXLFLASH_MAX_CONTEXT 512 /* number of contexts per AFU */ | |
401 | #define CXLFLASH_NUM_VLUNS 512 /* number of vluns per AFU/port */ | |
402 | #define CXLFLASH_NUM_REGS 512 /* number of registers per port */ | |
403 | ||
404 | struct fc_port_bank { | |
405 | __be64 fc_port_regs[CXLFLASH_NUM_FC_PORTS_PER_BANK][CXLFLASH_NUM_REGS]; | |
406 | __be64 fc_port_luns[CXLFLASH_NUM_FC_PORTS_PER_BANK][CXLFLASH_NUM_VLUNS]; | |
407 | }; | |
c21e0bbf MO |
408 | |
409 | struct sisl_global_map { | |
410 | union { | |
411 | struct sisl_global_regs regs; | |
412 | char page0[SIZE_4K]; /* page 0 */ | |
413 | }; | |
414 | ||
415 | char page1[SIZE_4K]; /* page 1 */ | |
416 | ||
bdcff1c5 | 417 | struct fc_port_bank bank[CXLFLASH_MAX_FC_BANKS]; /* pages 2 - 9 */ |
c21e0bbf | 418 | |
bdcff1c5 | 419 | /* pages 10 - 15 are reserved */ |
c21e0bbf MO |
420 | |
421 | }; | |
422 | ||
423 | /* | |
424 | * CXL Flash Memory Map | |
425 | * | |
426 | * +-------------------------------+ | |
427 | * | 512 * 64 KB User MMIO | | |
428 | * | (per context) | | |
429 | * | User Accessible | | |
430 | * +-------------------------------+ | |
431 | * | 512 * 128 B per context | | |
432 | * | Provisioning and Control | | |
433 | * | Trusted Process accessible | | |
434 | * +-------------------------------+ | |
435 | * | 64 KB Global | | |
436 | * | Trusted Process accessible | | |
437 | * +-------------------------------+ | |
438 | */ | |
439 | struct cxlflash_afu_map { | |
440 | union { | |
441 | struct sisl_host_map host; | |
442 | char harea[SIZE_64K]; /* 64KB each */ | |
443 | } hosts[CXLFLASH_MAX_CONTEXT]; | |
444 | ||
445 | union { | |
446 | struct sisl_ctrl_map ctrl; | |
447 | char carea[cache_line_size()]; /* 128B each */ | |
448 | } ctrls[CXLFLASH_MAX_CONTEXT]; | |
449 | ||
450 | union { | |
451 | struct sisl_global_map global; | |
452 | char garea[SIZE_64K]; /* 64KB single block */ | |
453 | }; | |
454 | }; | |
455 | ||
2cb79266 MO |
456 | /* |
457 | * LXT - LBA Translation Table | |
458 | * LXT control blocks | |
459 | */ | |
c21e0bbf MO |
460 | struct sisl_lxt_entry { |
461 | u64 rlba_base; /* bits 0:47 is base | |
2cb79266 MO |
462 | * b48:55 is lun index |
463 | * b58:59 is write & read perms | |
464 | * (if no perm, afu_rc=0x15) | |
465 | * b60:63 is port_sel mask | |
466 | */ | |
c21e0bbf MO |
467 | }; |
468 | ||
65be2c79 MO |
469 | /* |
470 | * RHT - Resource Handle Table | |
471 | * Per the SISlite spec, RHT entries are to be 16-byte aligned | |
472 | */ | |
c21e0bbf MO |
473 | struct sisl_rht_entry { |
474 | struct sisl_lxt_entry *lxt_start; | |
475 | u32 lxt_cnt; | |
476 | u16 rsvd; | |
477 | u8 fp; /* format & perm nibbles. | |
478 | * (if no perm, afu_rc=0x05) | |
479 | */ | |
480 | u8 nmask; | |
481 | } __packed __aligned(16); | |
482 | ||
483 | struct sisl_rht_entry_f1 { | |
484 | u64 lun_id; | |
485 | union { | |
486 | struct { | |
487 | u8 valid; | |
488 | u8 rsvd[5]; | |
489 | u8 fp; | |
490 | u8 port_sel; | |
491 | }; | |
492 | ||
493 | u64 dw; | |
494 | }; | |
495 | } __packed __aligned(16); | |
496 | ||
497 | /* make the fp byte */ | |
498 | #define SISL_RHT_FP(fmt, perm) (((fmt) << 4) | (perm)) | |
499 | ||
500 | /* make the fp byte for a clone from a source fp and clone flags | |
501 | * flags must be only 2 LSB bits. | |
502 | */ | |
503 | #define SISL_RHT_FP_CLONE(src_fp, cln_flags) ((src_fp) & (0xFC | (cln_flags))) | |
504 | ||
505 | #define RHT_PERM_READ 0x01U | |
506 | #define RHT_PERM_WRITE 0x02U | |
507 | #define RHT_PERM_RW (RHT_PERM_READ | RHT_PERM_WRITE) | |
508 | ||
509 | /* extract the perm bits from a fp */ | |
510 | #define SISL_RHT_PERM(fp) ((fp) & RHT_PERM_RW) | |
511 | ||
512 | #define PORT0 0x01U | |
513 | #define PORT1 0x02U | |
a290b480 MO |
514 | #define PORT2 0x04U |
515 | #define PORT3 0x08U | |
e8e17ea6 | 516 | #define PORT_MASK(_n) ((1 << (_n)) - 1) |
c21e0bbf MO |
517 | |
518 | /* AFU Sync Mode byte */ | |
519 | #define AFU_LW_SYNC 0x0U | |
520 | #define AFU_HW_SYNC 0x1U | |
521 | #define AFU_GSYNC 0x2U | |
522 | ||
523 | /* Special Task Management Function CDB */ | |
524 | #define TMF_LUN_RESET 0x1U | |
525 | #define TMF_CLEAR_ACA 0x2U | |
526 | ||
2cb79266 MO |
527 | |
528 | #define SISLITE_MAX_WS_BLOCKS 512 | |
529 | ||
c21e0bbf | 530 | #endif /* _SISLITE_H */ |