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5d0f6131 VV |
1 | /* |
2 | * NVM Express device driver | |
8757ad65 | 3 | * Copyright (c) 2011-2014, Intel Corporation. |
5d0f6131 VV |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
5d0f6131 VV |
13 | */ |
14 | ||
15 | /* | |
16 | * Refer to the SCSI-NVMe Translation spec for details on how | |
17 | * each command is translated. | |
18 | */ | |
19 | ||
20 | #include <linux/nvme.h> | |
21 | #include <linux/bio.h> | |
22 | #include <linux/bitops.h> | |
23 | #include <linux/blkdev.h> | |
320a3827 | 24 | #include <linux/compat.h> |
5d0f6131 VV |
25 | #include <linux/delay.h> |
26 | #include <linux/errno.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/genhd.h> | |
29 | #include <linux/idr.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/io.h> | |
33 | #include <linux/kdev_t.h> | |
34 | #include <linux/kthread.h> | |
35 | #include <linux/kernel.h> | |
36 | #include <linux/mm.h> | |
37 | #include <linux/module.h> | |
38 | #include <linux/moduleparam.h> | |
39 | #include <linux/pci.h> | |
40 | #include <linux/poison.h> | |
41 | #include <linux/sched.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/types.h> | |
5d0f6131 VV |
44 | #include <scsi/sg.h> |
45 | #include <scsi/scsi.h> | |
46 | ||
47 | ||
48 | static int sg_version_num = 30534; /* 2 digits for each component */ | |
49 | ||
50 | #define SNTI_TRANSLATION_SUCCESS 0 | |
51 | #define SNTI_INTERNAL_ERROR 1 | |
52 | ||
53 | /* VPD Page Codes */ | |
54 | #define VPD_SUPPORTED_PAGES 0x00 | |
55 | #define VPD_SERIAL_NUMBER 0x80 | |
56 | #define VPD_DEVICE_IDENTIFIERS 0x83 | |
57 | #define VPD_EXTENDED_INQUIRY 0x86 | |
58 | #define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1 | |
59 | ||
60 | /* CDB offsets */ | |
61 | #define REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET 6 | |
62 | #define REPORT_LUNS_SR_OFFSET 2 | |
63 | #define READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET 10 | |
64 | #define REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET 4 | |
65 | #define REQUEST_SENSE_DESC_OFFSET 1 | |
66 | #define REQUEST_SENSE_DESC_MASK 0x01 | |
67 | #define DESCRIPTOR_FORMAT_SENSE_DATA_TYPE 1 | |
68 | #define INQUIRY_EVPD_BYTE_OFFSET 1 | |
69 | #define INQUIRY_PAGE_CODE_BYTE_OFFSET 2 | |
70 | #define INQUIRY_EVPD_BIT_MASK 1 | |
71 | #define INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET 3 | |
72 | #define START_STOP_UNIT_CDB_IMMED_OFFSET 1 | |
73 | #define START_STOP_UNIT_CDB_IMMED_MASK 0x1 | |
74 | #define START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET 3 | |
75 | #define START_STOP_UNIT_CDB_POWER_COND_MOD_MASK 0xF | |
76 | #define START_STOP_UNIT_CDB_POWER_COND_OFFSET 4 | |
77 | #define START_STOP_UNIT_CDB_POWER_COND_MASK 0xF0 | |
78 | #define START_STOP_UNIT_CDB_NO_FLUSH_OFFSET 4 | |
79 | #define START_STOP_UNIT_CDB_NO_FLUSH_MASK 0x4 | |
80 | #define START_STOP_UNIT_CDB_START_OFFSET 4 | |
81 | #define START_STOP_UNIT_CDB_START_MASK 0x1 | |
82 | #define WRITE_BUFFER_CDB_MODE_OFFSET 1 | |
83 | #define WRITE_BUFFER_CDB_MODE_MASK 0x1F | |
84 | #define WRITE_BUFFER_CDB_BUFFER_ID_OFFSET 2 | |
85 | #define WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET 3 | |
86 | #define WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET 6 | |
87 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET 1 | |
88 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK 0xC0 | |
89 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT 6 | |
90 | #define FORMAT_UNIT_CDB_LONG_LIST_OFFSET 1 | |
91 | #define FORMAT_UNIT_CDB_LONG_LIST_MASK 0x20 | |
92 | #define FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET 1 | |
93 | #define FORMAT_UNIT_CDB_FORMAT_DATA_MASK 0x10 | |
94 | #define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4 | |
95 | #define FORMAT_UNIT_LONG_PARM_LIST_LEN 8 | |
96 | #define FORMAT_UNIT_PROT_INT_OFFSET 3 | |
97 | #define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0 | |
98 | #define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07 | |
ec503733 | 99 | #define UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET 7 |
5d0f6131 VV |
100 | |
101 | /* Misc. defines */ | |
102 | #define NIBBLE_SHIFT 4 | |
103 | #define FIXED_SENSE_DATA 0x70 | |
104 | #define DESC_FORMAT_SENSE_DATA 0x72 | |
105 | #define FIXED_SENSE_DATA_ADD_LENGTH 10 | |
106 | #define LUN_ENTRY_SIZE 8 | |
107 | #define LUN_DATA_HEADER_SIZE 8 | |
108 | #define ALL_LUNS_RETURNED 0x02 | |
109 | #define ALL_WELL_KNOWN_LUNS_RETURNED 0x01 | |
110 | #define RESTRICTED_LUNS_RETURNED 0x00 | |
111 | #define NVME_POWER_STATE_START_VALID 0x00 | |
112 | #define NVME_POWER_STATE_ACTIVE 0x01 | |
113 | #define NVME_POWER_STATE_IDLE 0x02 | |
114 | #define NVME_POWER_STATE_STANDBY 0x03 | |
115 | #define NVME_POWER_STATE_LU_CONTROL 0x07 | |
116 | #define POWER_STATE_0 0 | |
117 | #define POWER_STATE_1 1 | |
118 | #define POWER_STATE_2 2 | |
119 | #define POWER_STATE_3 3 | |
120 | #define DOWNLOAD_SAVE_ACTIVATE 0x05 | |
121 | #define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E | |
122 | #define ACTIVATE_DEFERRED_MICROCODE 0x0F | |
123 | #define FORMAT_UNIT_IMMED_MASK 0x2 | |
124 | #define FORMAT_UNIT_IMMED_OFFSET 1 | |
125 | #define KELVIN_TEMP_FACTOR 273 | |
126 | #define FIXED_FMT_SENSE_DATA_SIZE 18 | |
127 | #define DESC_FMT_SENSE_DATA_SIZE 8 | |
128 | ||
129 | /* SCSI/NVMe defines and bit masks */ | |
130 | #define INQ_STANDARD_INQUIRY_PAGE 0x00 | |
131 | #define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00 | |
132 | #define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80 | |
133 | #define INQ_DEVICE_IDENTIFICATION_PAGE 0x83 | |
134 | #define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86 | |
135 | #define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1 | |
136 | #define INQ_SERIAL_NUMBER_LENGTH 0x14 | |
137 | #define INQ_NUM_SUPPORTED_VPD_PAGES 5 | |
138 | #define VERSION_SPC_4 0x06 | |
139 | #define ACA_UNSUPPORTED 0 | |
140 | #define STANDARD_INQUIRY_LENGTH 36 | |
141 | #define ADDITIONAL_STD_INQ_LENGTH 31 | |
142 | #define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C | |
143 | #define RESERVED_FIELD 0 | |
144 | ||
145 | /* SCSI READ/WRITE Defines */ | |
146 | #define IO_CDB_WP_MASK 0xE0 | |
147 | #define IO_CDB_WP_SHIFT 5 | |
148 | #define IO_CDB_FUA_MASK 0x8 | |
149 | #define IO_6_CDB_LBA_OFFSET 0 | |
150 | #define IO_6_CDB_LBA_MASK 0x001FFFFF | |
151 | #define IO_6_CDB_TX_LEN_OFFSET 4 | |
152 | #define IO_6_DEFAULT_TX_LEN 256 | |
153 | #define IO_10_CDB_LBA_OFFSET 2 | |
154 | #define IO_10_CDB_TX_LEN_OFFSET 7 | |
155 | #define IO_10_CDB_WP_OFFSET 1 | |
156 | #define IO_10_CDB_FUA_OFFSET 1 | |
157 | #define IO_12_CDB_LBA_OFFSET 2 | |
158 | #define IO_12_CDB_TX_LEN_OFFSET 6 | |
159 | #define IO_12_CDB_WP_OFFSET 1 | |
160 | #define IO_12_CDB_FUA_OFFSET 1 | |
161 | #define IO_16_CDB_FUA_OFFSET 1 | |
162 | #define IO_16_CDB_WP_OFFSET 1 | |
163 | #define IO_16_CDB_LBA_OFFSET 2 | |
164 | #define IO_16_CDB_TX_LEN_OFFSET 10 | |
165 | ||
166 | /* Mode Sense/Select defines */ | |
167 | #define MODE_PAGE_INFO_EXCEP 0x1C | |
168 | #define MODE_PAGE_CACHING 0x08 | |
169 | #define MODE_PAGE_CONTROL 0x0A | |
170 | #define MODE_PAGE_POWER_CONDITION 0x1A | |
171 | #define MODE_PAGE_RETURN_ALL 0x3F | |
172 | #define MODE_PAGE_BLK_DES_LEN 0x08 | |
173 | #define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10 | |
174 | #define MODE_PAGE_CACHING_LEN 0x14 | |
175 | #define MODE_PAGE_CONTROL_LEN 0x0C | |
176 | #define MODE_PAGE_POW_CND_LEN 0x28 | |
177 | #define MODE_PAGE_INF_EXC_LEN 0x0C | |
178 | #define MODE_PAGE_ALL_LEN 0x54 | |
179 | #define MODE_SENSE6_MPH_SIZE 4 | |
180 | #define MODE_SENSE6_ALLOC_LEN_OFFSET 4 | |
181 | #define MODE_SENSE_PAGE_CONTROL_OFFSET 2 | |
182 | #define MODE_SENSE_PAGE_CONTROL_MASK 0xC0 | |
183 | #define MODE_SENSE_PAGE_CODE_OFFSET 2 | |
184 | #define MODE_SENSE_PAGE_CODE_MASK 0x3F | |
185 | #define MODE_SENSE_LLBAA_OFFSET 1 | |
186 | #define MODE_SENSE_LLBAA_MASK 0x10 | |
187 | #define MODE_SENSE_LLBAA_SHIFT 4 | |
188 | #define MODE_SENSE_DBD_OFFSET 1 | |
189 | #define MODE_SENSE_DBD_MASK 8 | |
190 | #define MODE_SENSE_DBD_SHIFT 3 | |
191 | #define MODE_SENSE10_MPH_SIZE 8 | |
192 | #define MODE_SENSE10_ALLOC_LEN_OFFSET 7 | |
193 | #define MODE_SELECT_CDB_PAGE_FORMAT_OFFSET 1 | |
194 | #define MODE_SELECT_CDB_SAVE_PAGES_OFFSET 1 | |
195 | #define MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET 4 | |
196 | #define MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET 7 | |
197 | #define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10 | |
198 | #define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1 | |
199 | #define MODE_SELECT_6_BD_OFFSET 3 | |
200 | #define MODE_SELECT_10_BD_OFFSET 6 | |
201 | #define MODE_SELECT_10_LLBAA_OFFSET 4 | |
202 | #define MODE_SELECT_10_LLBAA_MASK 1 | |
203 | #define MODE_SELECT_6_MPH_SIZE 4 | |
204 | #define MODE_SELECT_10_MPH_SIZE 8 | |
205 | #define CACHING_MODE_PAGE_WCE_MASK 0x04 | |
206 | #define MODE_SENSE_BLK_DESC_ENABLED 0 | |
207 | #define MODE_SENSE_BLK_DESC_COUNT 1 | |
208 | #define MODE_SELECT_PAGE_CODE_MASK 0x3F | |
209 | #define SHORT_DESC_BLOCK 8 | |
210 | #define LONG_DESC_BLOCK 16 | |
211 | #define MODE_PAGE_POW_CND_LEN_FIELD 0x26 | |
212 | #define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A | |
213 | #define MODE_PAGE_CACHING_LEN_FIELD 0x12 | |
214 | #define MODE_PAGE_CONTROL_LEN_FIELD 0x0A | |
215 | #define MODE_SENSE_PC_CURRENT_VALUES 0 | |
216 | ||
217 | /* Log Sense defines */ | |
218 | #define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00 | |
219 | #define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07 | |
220 | #define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F | |
221 | #define LOG_PAGE_TEMPERATURE_PAGE 0x0D | |
222 | #define LOG_SENSE_CDB_SP_OFFSET 1 | |
223 | #define LOG_SENSE_CDB_SP_NOT_ENABLED 0 | |
224 | #define LOG_SENSE_CDB_PC_OFFSET 2 | |
225 | #define LOG_SENSE_CDB_PC_MASK 0xC0 | |
226 | #define LOG_SENSE_CDB_PC_SHIFT 6 | |
227 | #define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1 | |
228 | #define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F | |
229 | #define LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET 7 | |
230 | #define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8 | |
231 | #define LOG_INFO_EXCP_PAGE_LENGTH 0xC | |
232 | #define REMAINING_TEMP_PAGE_LENGTH 0xC | |
233 | #define LOG_TEMP_PAGE_LENGTH 0x10 | |
234 | #define LOG_TEMP_UNKNOWN 0xFF | |
235 | #define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3 | |
236 | ||
237 | /* Read Capacity defines */ | |
238 | #define READ_CAP_10_RESP_SIZE 8 | |
239 | #define READ_CAP_16_RESP_SIZE 32 | |
240 | ||
241 | /* NVMe Namespace and Command Defines */ | |
5d0f6131 VV |
242 | #define BYTES_TO_DWORDS 4 |
243 | #define NVME_MAX_FIRMWARE_SLOT 7 | |
244 | ||
245 | /* Report LUNs defines */ | |
246 | #define REPORT_LUNS_FIRST_LUN_OFFSET 8 | |
247 | ||
248 | /* SCSI ADDITIONAL SENSE Codes */ | |
249 | ||
250 | #define SCSI_ASC_NO_SENSE 0x00 | |
251 | #define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03 | |
252 | #define SCSI_ASC_LUN_NOT_READY 0x04 | |
253 | #define SCSI_ASC_WARNING 0x0B | |
254 | #define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10 | |
255 | #define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10 | |
256 | #define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10 | |
257 | #define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11 | |
258 | #define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D | |
259 | #define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20 | |
260 | #define SCSI_ASC_ILLEGAL_COMMAND 0x20 | |
261 | #define SCSI_ASC_ILLEGAL_BLOCK 0x21 | |
262 | #define SCSI_ASC_INVALID_CDB 0x24 | |
263 | #define SCSI_ASC_INVALID_LUN 0x25 | |
264 | #define SCSI_ASC_INVALID_PARAMETER 0x26 | |
265 | #define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31 | |
266 | #define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44 | |
267 | ||
268 | /* SCSI ADDITIONAL SENSE Code Qualifiers */ | |
269 | ||
270 | #define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00 | |
271 | #define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01 | |
272 | #define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01 | |
273 | #define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02 | |
274 | #define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03 | |
275 | #define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04 | |
276 | #define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08 | |
277 | #define SCSI_ASCQ_INVALID_LUN_ID 0x09 | |
278 | ||
279 | /** | |
280 | * DEVICE_SPECIFIC_PARAMETER in mode parameter header (see sbc2r16) to | |
281 | * enable DPOFUA support type 0x10 value. | |
282 | */ | |
283 | #define DEVICE_SPECIFIC_PARAMETER 0 | |
284 | #define VPD_ID_DESCRIPTOR_LENGTH sizeof(VPD_IDENTIFICATION_DESCRIPTOR) | |
285 | ||
286 | /* MACROs to extract information from CDBs */ | |
287 | ||
288 | #define GET_OPCODE(cdb) cdb[0] | |
289 | ||
290 | #define GET_U8_FROM_CDB(cdb, index) (cdb[index] << 0) | |
291 | ||
292 | #define GET_U16_FROM_CDB(cdb, index) ((cdb[index] << 8) | (cdb[index + 1] << 0)) | |
293 | ||
294 | #define GET_U24_FROM_CDB(cdb, index) ((cdb[index] << 16) | \ | |
295 | (cdb[index + 1] << 8) | \ | |
296 | (cdb[index + 2] << 0)) | |
297 | ||
298 | #define GET_U32_FROM_CDB(cdb, index) ((cdb[index] << 24) | \ | |
299 | (cdb[index + 1] << 16) | \ | |
300 | (cdb[index + 2] << 8) | \ | |
301 | (cdb[index + 3] << 0)) | |
302 | ||
303 | #define GET_U64_FROM_CDB(cdb, index) ((((u64)cdb[index]) << 56) | \ | |
304 | (((u64)cdb[index + 1]) << 48) | \ | |
305 | (((u64)cdb[index + 2]) << 40) | \ | |
306 | (((u64)cdb[index + 3]) << 32) | \ | |
307 | (((u64)cdb[index + 4]) << 24) | \ | |
308 | (((u64)cdb[index + 5]) << 16) | \ | |
309 | (((u64)cdb[index + 6]) << 8) | \ | |
310 | (((u64)cdb[index + 7]) << 0)) | |
311 | ||
312 | /* Inquiry Helper Macros */ | |
313 | #define GET_INQ_EVPD_BIT(cdb) \ | |
314 | ((GET_U8_FROM_CDB(cdb, INQUIRY_EVPD_BYTE_OFFSET) & \ | |
315 | INQUIRY_EVPD_BIT_MASK) ? 1 : 0) | |
316 | ||
317 | #define GET_INQ_PAGE_CODE(cdb) \ | |
318 | (GET_U8_FROM_CDB(cdb, INQUIRY_PAGE_CODE_BYTE_OFFSET)) | |
319 | ||
320 | #define GET_INQ_ALLOC_LENGTH(cdb) \ | |
321 | (GET_U16_FROM_CDB(cdb, INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET)) | |
322 | ||
323 | /* Report LUNs Helper Macros */ | |
324 | #define GET_REPORT_LUNS_ALLOC_LENGTH(cdb) \ | |
325 | (GET_U32_FROM_CDB(cdb, REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET)) | |
326 | ||
327 | /* Read Capacity Helper Macros */ | |
328 | #define GET_READ_CAP_16_ALLOC_LENGTH(cdb) \ | |
329 | (GET_U32_FROM_CDB(cdb, READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET)) | |
330 | ||
331 | #define IS_READ_CAP_16(cdb) \ | |
eb846d9f | 332 | ((cdb[0] == SERVICE_ACTION_IN_16 && cdb[1] == SAI_READ_CAPACITY_16) ? 1 : 0) |
5d0f6131 VV |
333 | |
334 | /* Request Sense Helper Macros */ | |
335 | #define GET_REQUEST_SENSE_ALLOC_LENGTH(cdb) \ | |
336 | (GET_U8_FROM_CDB(cdb, REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET)) | |
337 | ||
338 | /* Mode Sense Helper Macros */ | |
339 | #define GET_MODE_SENSE_DBD(cdb) \ | |
340 | ((GET_U8_FROM_CDB(cdb, MODE_SENSE_DBD_OFFSET) & MODE_SENSE_DBD_MASK) >> \ | |
341 | MODE_SENSE_DBD_SHIFT) | |
342 | ||
343 | #define GET_MODE_SENSE_LLBAA(cdb) \ | |
344 | ((GET_U8_FROM_CDB(cdb, MODE_SENSE_LLBAA_OFFSET) & \ | |
345 | MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT) | |
346 | ||
347 | #define GET_MODE_SENSE_MPH_SIZE(cdb10) \ | |
348 | (cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE) | |
349 | ||
350 | ||
351 | /* Struct to gather data that needs to be extracted from a SCSI CDB. | |
352 | Not conforming to any particular CDB variant, but compatible with all. */ | |
353 | ||
354 | struct nvme_trans_io_cdb { | |
355 | u8 fua; | |
356 | u8 prot_info; | |
357 | u64 lba; | |
358 | u32 xfer_len; | |
359 | }; | |
360 | ||
361 | ||
362 | /* Internal Helper Functions */ | |
363 | ||
364 | ||
365 | /* Copy data to userspace memory */ | |
366 | ||
367 | static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, | |
368 | unsigned long n) | |
369 | { | |
370 | int res = SNTI_TRANSLATION_SUCCESS; | |
371 | unsigned long not_copied; | |
372 | int i; | |
373 | void *index = from; | |
374 | size_t remaining = n; | |
375 | size_t xfer_len; | |
376 | ||
377 | if (hdr->iovec_count > 0) { | |
8741ee4c | 378 | struct sg_iovec sgl; |
5d0f6131 VV |
379 | |
380 | for (i = 0; i < hdr->iovec_count; i++) { | |
8741ee4c VV |
381 | not_copied = copy_from_user(&sgl, hdr->dxferp + |
382 | i * sizeof(struct sg_iovec), | |
383 | sizeof(struct sg_iovec)); | |
384 | if (not_copied) | |
385 | return -EFAULT; | |
386 | xfer_len = min(remaining, sgl.iov_len); | |
387 | not_copied = copy_to_user(sgl.iov_base, index, | |
5d0f6131 VV |
388 | xfer_len); |
389 | if (not_copied) { | |
390 | res = -EFAULT; | |
391 | break; | |
392 | } | |
393 | index += xfer_len; | |
394 | remaining -= xfer_len; | |
395 | if (remaining == 0) | |
396 | break; | |
397 | } | |
398 | return res; | |
399 | } | |
8741ee4c | 400 | not_copied = copy_to_user(hdr->dxferp, from, n); |
5d0f6131 VV |
401 | if (not_copied) |
402 | res = -EFAULT; | |
403 | return res; | |
404 | } | |
405 | ||
406 | /* Copy data from userspace memory */ | |
407 | ||
408 | static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to, | |
409 | unsigned long n) | |
410 | { | |
411 | int res = SNTI_TRANSLATION_SUCCESS; | |
412 | unsigned long not_copied; | |
413 | int i; | |
414 | void *index = to; | |
415 | size_t remaining = n; | |
416 | size_t xfer_len; | |
417 | ||
418 | if (hdr->iovec_count > 0) { | |
8741ee4c | 419 | struct sg_iovec sgl; |
5d0f6131 VV |
420 | |
421 | for (i = 0; i < hdr->iovec_count; i++) { | |
8741ee4c VV |
422 | not_copied = copy_from_user(&sgl, hdr->dxferp + |
423 | i * sizeof(struct sg_iovec), | |
424 | sizeof(struct sg_iovec)); | |
425 | if (not_copied) | |
426 | return -EFAULT; | |
427 | xfer_len = min(remaining, sgl.iov_len); | |
428 | not_copied = copy_from_user(index, sgl.iov_base, | |
429 | xfer_len); | |
5d0f6131 VV |
430 | if (not_copied) { |
431 | res = -EFAULT; | |
432 | break; | |
433 | } | |
434 | index += xfer_len; | |
435 | remaining -= xfer_len; | |
436 | if (remaining == 0) | |
437 | break; | |
438 | } | |
439 | return res; | |
440 | } | |
441 | ||
8741ee4c | 442 | not_copied = copy_from_user(to, hdr->dxferp, n); |
5d0f6131 VV |
443 | if (not_copied) |
444 | res = -EFAULT; | |
445 | return res; | |
446 | } | |
447 | ||
448 | /* Status/Sense Buffer Writeback */ | |
449 | ||
450 | static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key, | |
451 | u8 asc, u8 ascq) | |
452 | { | |
453 | int res = SNTI_TRANSLATION_SUCCESS; | |
454 | u8 xfer_len; | |
455 | u8 resp[DESC_FMT_SENSE_DATA_SIZE]; | |
456 | ||
457 | if (scsi_status_is_good(status)) { | |
458 | hdr->status = SAM_STAT_GOOD; | |
459 | hdr->masked_status = GOOD; | |
460 | hdr->host_status = DID_OK; | |
461 | hdr->driver_status = DRIVER_OK; | |
462 | hdr->sb_len_wr = 0; | |
463 | } else { | |
464 | hdr->status = status; | |
465 | hdr->masked_status = status >> 1; | |
466 | hdr->host_status = DID_OK; | |
467 | hdr->driver_status = DRIVER_OK; | |
468 | ||
469 | memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE); | |
470 | resp[0] = DESC_FORMAT_SENSE_DATA; | |
471 | resp[1] = sense_key; | |
472 | resp[2] = asc; | |
473 | resp[3] = ascq; | |
474 | ||
475 | xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE); | |
476 | hdr->sb_len_wr = xfer_len; | |
8741ee4c | 477 | if (copy_to_user(hdr->sbp, resp, xfer_len) > 0) |
5d0f6131 VV |
478 | res = -EFAULT; |
479 | } | |
480 | ||
481 | return res; | |
482 | } | |
483 | ||
484 | static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc) | |
485 | { | |
486 | u8 status, sense_key, asc, ascq; | |
487 | int res = SNTI_TRANSLATION_SUCCESS; | |
488 | ||
489 | /* For non-nvme (Linux) errors, simply return the error code */ | |
490 | if (nvme_sc < 0) | |
491 | return nvme_sc; | |
492 | ||
493 | /* Mask DNR, More, and reserved fields */ | |
494 | nvme_sc &= 0x7FF; | |
495 | ||
496 | switch (nvme_sc) { | |
497 | /* Generic Command Status */ | |
498 | case NVME_SC_SUCCESS: | |
499 | status = SAM_STAT_GOOD; | |
500 | sense_key = NO_SENSE; | |
501 | asc = SCSI_ASC_NO_SENSE; | |
502 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
503 | break; | |
504 | case NVME_SC_INVALID_OPCODE: | |
505 | status = SAM_STAT_CHECK_CONDITION; | |
506 | sense_key = ILLEGAL_REQUEST; | |
507 | asc = SCSI_ASC_ILLEGAL_COMMAND; | |
508 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
509 | break; | |
510 | case NVME_SC_INVALID_FIELD: | |
511 | status = SAM_STAT_CHECK_CONDITION; | |
512 | sense_key = ILLEGAL_REQUEST; | |
513 | asc = SCSI_ASC_INVALID_CDB; | |
514 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
515 | break; | |
516 | case NVME_SC_DATA_XFER_ERROR: | |
517 | status = SAM_STAT_CHECK_CONDITION; | |
518 | sense_key = MEDIUM_ERROR; | |
519 | asc = SCSI_ASC_NO_SENSE; | |
520 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
521 | break; | |
522 | case NVME_SC_POWER_LOSS: | |
523 | status = SAM_STAT_TASK_ABORTED; | |
524 | sense_key = ABORTED_COMMAND; | |
525 | asc = SCSI_ASC_WARNING; | |
526 | ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED; | |
527 | break; | |
528 | case NVME_SC_INTERNAL: | |
529 | status = SAM_STAT_CHECK_CONDITION; | |
530 | sense_key = HARDWARE_ERROR; | |
531 | asc = SCSI_ASC_INTERNAL_TARGET_FAILURE; | |
532 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
533 | break; | |
534 | case NVME_SC_ABORT_REQ: | |
535 | status = SAM_STAT_TASK_ABORTED; | |
536 | sense_key = ABORTED_COMMAND; | |
537 | asc = SCSI_ASC_NO_SENSE; | |
538 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
539 | break; | |
540 | case NVME_SC_ABORT_QUEUE: | |
541 | status = SAM_STAT_TASK_ABORTED; | |
542 | sense_key = ABORTED_COMMAND; | |
543 | asc = SCSI_ASC_NO_SENSE; | |
544 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
545 | break; | |
546 | case NVME_SC_FUSED_FAIL: | |
547 | status = SAM_STAT_TASK_ABORTED; | |
548 | sense_key = ABORTED_COMMAND; | |
549 | asc = SCSI_ASC_NO_SENSE; | |
550 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
551 | break; | |
552 | case NVME_SC_FUSED_MISSING: | |
553 | status = SAM_STAT_TASK_ABORTED; | |
554 | sense_key = ABORTED_COMMAND; | |
555 | asc = SCSI_ASC_NO_SENSE; | |
556 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
557 | break; | |
558 | case NVME_SC_INVALID_NS: | |
559 | status = SAM_STAT_CHECK_CONDITION; | |
560 | sense_key = ILLEGAL_REQUEST; | |
561 | asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; | |
562 | ascq = SCSI_ASCQ_INVALID_LUN_ID; | |
563 | break; | |
564 | case NVME_SC_LBA_RANGE: | |
565 | status = SAM_STAT_CHECK_CONDITION; | |
566 | sense_key = ILLEGAL_REQUEST; | |
567 | asc = SCSI_ASC_ILLEGAL_BLOCK; | |
568 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
569 | break; | |
570 | case NVME_SC_CAP_EXCEEDED: | |
571 | status = SAM_STAT_CHECK_CONDITION; | |
572 | sense_key = MEDIUM_ERROR; | |
573 | asc = SCSI_ASC_NO_SENSE; | |
574 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
575 | break; | |
576 | case NVME_SC_NS_NOT_READY: | |
577 | status = SAM_STAT_CHECK_CONDITION; | |
578 | sense_key = NOT_READY; | |
579 | asc = SCSI_ASC_LUN_NOT_READY; | |
580 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
581 | break; | |
582 | ||
583 | /* Command Specific Status */ | |
584 | case NVME_SC_INVALID_FORMAT: | |
585 | status = SAM_STAT_CHECK_CONDITION; | |
586 | sense_key = ILLEGAL_REQUEST; | |
587 | asc = SCSI_ASC_FORMAT_COMMAND_FAILED; | |
588 | ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED; | |
589 | break; | |
590 | case NVME_SC_BAD_ATTRIBUTES: | |
591 | status = SAM_STAT_CHECK_CONDITION; | |
592 | sense_key = ILLEGAL_REQUEST; | |
593 | asc = SCSI_ASC_INVALID_CDB; | |
594 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
595 | break; | |
596 | ||
597 | /* Media Errors */ | |
598 | case NVME_SC_WRITE_FAULT: | |
599 | status = SAM_STAT_CHECK_CONDITION; | |
600 | sense_key = MEDIUM_ERROR; | |
601 | asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT; | |
602 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
603 | break; | |
604 | case NVME_SC_READ_ERROR: | |
605 | status = SAM_STAT_CHECK_CONDITION; | |
606 | sense_key = MEDIUM_ERROR; | |
607 | asc = SCSI_ASC_UNRECOVERED_READ_ERROR; | |
608 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
609 | break; | |
610 | case NVME_SC_GUARD_CHECK: | |
611 | status = SAM_STAT_CHECK_CONDITION; | |
612 | sense_key = MEDIUM_ERROR; | |
613 | asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED; | |
614 | ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED; | |
615 | break; | |
616 | case NVME_SC_APPTAG_CHECK: | |
617 | status = SAM_STAT_CHECK_CONDITION; | |
618 | sense_key = MEDIUM_ERROR; | |
619 | asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED; | |
620 | ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED; | |
621 | break; | |
622 | case NVME_SC_REFTAG_CHECK: | |
623 | status = SAM_STAT_CHECK_CONDITION; | |
624 | sense_key = MEDIUM_ERROR; | |
625 | asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED; | |
626 | ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED; | |
627 | break; | |
628 | case NVME_SC_COMPARE_FAILED: | |
629 | status = SAM_STAT_CHECK_CONDITION; | |
630 | sense_key = MISCOMPARE; | |
631 | asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY; | |
632 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
633 | break; | |
634 | case NVME_SC_ACCESS_DENIED: | |
635 | status = SAM_STAT_CHECK_CONDITION; | |
636 | sense_key = ILLEGAL_REQUEST; | |
637 | asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; | |
638 | ascq = SCSI_ASCQ_INVALID_LUN_ID; | |
639 | break; | |
640 | ||
641 | /* Unspecified/Default */ | |
642 | case NVME_SC_CMDID_CONFLICT: | |
643 | case NVME_SC_CMD_SEQ_ERROR: | |
644 | case NVME_SC_CQ_INVALID: | |
645 | case NVME_SC_QID_INVALID: | |
646 | case NVME_SC_QUEUE_SIZE: | |
647 | case NVME_SC_ABORT_LIMIT: | |
648 | case NVME_SC_ABORT_MISSING: | |
649 | case NVME_SC_ASYNC_LIMIT: | |
650 | case NVME_SC_FIRMWARE_SLOT: | |
651 | case NVME_SC_FIRMWARE_IMAGE: | |
652 | case NVME_SC_INVALID_VECTOR: | |
653 | case NVME_SC_INVALID_LOG_PAGE: | |
654 | default: | |
655 | status = SAM_STAT_CHECK_CONDITION; | |
656 | sense_key = ILLEGAL_REQUEST; | |
657 | asc = SCSI_ASC_NO_SENSE; | |
658 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
659 | break; | |
660 | } | |
661 | ||
662 | res = nvme_trans_completion(hdr, status, sense_key, asc, ascq); | |
663 | ||
664 | return res; | |
665 | } | |
666 | ||
667 | /* INQUIRY Helper Functions */ | |
668 | ||
669 | static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns, | |
670 | struct sg_io_hdr *hdr, u8 *inq_response, | |
671 | int alloc_len) | |
672 | { | |
673 | struct nvme_dev *dev = ns->dev; | |
674 | dma_addr_t dma_addr; | |
675 | void *mem; | |
676 | struct nvme_id_ns *id_ns; | |
677 | int res = SNTI_TRANSLATION_SUCCESS; | |
678 | int nvme_sc; | |
679 | int xfer_len; | |
680 | u8 resp_data_format = 0x02; | |
681 | u8 protect; | |
682 | u8 cmdque = 0x01 << 1; | |
dedf4b15 | 683 | u8 fw_offset = sizeof(dev->firmware_rev); |
5d0f6131 VV |
684 | |
685 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
686 | &dma_addr, GFP_KERNEL); | |
687 | if (mem == NULL) { | |
688 | res = -ENOMEM; | |
689 | goto out_dma; | |
690 | } | |
691 | ||
692 | /* nvme ns identify - use DPS value for PROTECT field */ | |
693 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
694 | res = nvme_trans_status_code(hdr, nvme_sc); | |
695 | /* | |
696 | * If nvme_sc was -ve, res will be -ve here. | |
697 | * If nvme_sc was +ve, the status would bace been translated, and res | |
698 | * can only be 0 or -ve. | |
699 | * - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc | |
700 | * - If -ve, return because its a Linux error. | |
701 | */ | |
702 | if (res) | |
703 | goto out_free; | |
704 | if (nvme_sc) { | |
705 | res = nvme_sc; | |
706 | goto out_free; | |
707 | } | |
708 | id_ns = mem; | |
709 | (id_ns->dps) ? (protect = 0x01) : (protect = 0); | |
710 | ||
711 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
712 | inq_response[2] = VERSION_SPC_4; | |
713 | inq_response[3] = resp_data_format; /*normaca=0 | hisup=0 */ | |
714 | inq_response[4] = ADDITIONAL_STD_INQ_LENGTH; | |
715 | inq_response[5] = protect; /* sccs=0 | acc=0 | tpgs=0 | pc3=0 */ | |
716 | inq_response[7] = cmdque; /* wbus16=0 | sync=0 | vs=0 */ | |
717 | strncpy(&inq_response[8], "NVMe ", 8); | |
718 | strncpy(&inq_response[16], dev->model, 16); | |
dedf4b15 KB |
719 | |
720 | while (dev->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4) | |
721 | fw_offset--; | |
722 | fw_offset -= 4; | |
723 | strncpy(&inq_response[32], dev->firmware_rev + fw_offset, 4); | |
5d0f6131 VV |
724 | |
725 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
726 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
727 | ||
728 | out_free: | |
729 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
730 | dma_addr); | |
731 | out_dma: | |
732 | return res; | |
733 | } | |
734 | ||
735 | static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns, | |
736 | struct sg_io_hdr *hdr, u8 *inq_response, | |
737 | int alloc_len) | |
738 | { | |
739 | int res = SNTI_TRANSLATION_SUCCESS; | |
740 | int xfer_len; | |
741 | ||
742 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
743 | inq_response[1] = INQ_SUPPORTED_VPD_PAGES_PAGE; /* Page Code */ | |
744 | inq_response[3] = INQ_NUM_SUPPORTED_VPD_PAGES; /* Page Length */ | |
745 | inq_response[4] = INQ_SUPPORTED_VPD_PAGES_PAGE; | |
746 | inq_response[5] = INQ_UNIT_SERIAL_NUMBER_PAGE; | |
747 | inq_response[6] = INQ_DEVICE_IDENTIFICATION_PAGE; | |
748 | inq_response[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE; | |
749 | inq_response[8] = INQ_BDEV_CHARACTERISTICS_PAGE; | |
750 | ||
751 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
752 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
753 | ||
754 | return res; | |
755 | } | |
756 | ||
757 | static int nvme_trans_unit_serial_page(struct nvme_ns *ns, | |
758 | struct sg_io_hdr *hdr, u8 *inq_response, | |
759 | int alloc_len) | |
760 | { | |
761 | struct nvme_dev *dev = ns->dev; | |
762 | int res = SNTI_TRANSLATION_SUCCESS; | |
763 | int xfer_len; | |
764 | ||
765 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
766 | inq_response[1] = INQ_UNIT_SERIAL_NUMBER_PAGE; /* Page Code */ | |
767 | inq_response[3] = INQ_SERIAL_NUMBER_LENGTH; /* Page Length */ | |
768 | strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH); | |
769 | ||
770 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
771 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
772 | ||
773 | return res; | |
774 | } | |
775 | ||
776 | static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
777 | u8 *inq_response, int alloc_len) | |
778 | { | |
779 | struct nvme_dev *dev = ns->dev; | |
780 | dma_addr_t dma_addr; | |
781 | void *mem; | |
5d0f6131 VV |
782 | int res = SNTI_TRANSLATION_SUCCESS; |
783 | int nvme_sc; | |
5d0f6131 | 784 | int xfer_len; |
8741ee4c | 785 | __be32 tmp_id = cpu_to_be32(ns->ns_id); |
5d0f6131 VV |
786 | |
787 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
788 | &dma_addr, GFP_KERNEL); | |
789 | if (mem == NULL) { | |
790 | res = -ENOMEM; | |
791 | goto out_dma; | |
792 | } | |
793 | ||
4f1982b4 | 794 | memset(inq_response, 0, alloc_len); |
5d0f6131 | 795 | inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; /* Page Code */ |
4f1982b4 KB |
796 | if (readl(&dev->bar->vs) >= NVME_VS(1, 1)) { |
797 | struct nvme_id_ns *id_ns = mem; | |
798 | void *eui = id_ns->eui64; | |
799 | int len = sizeof(id_ns->eui64); | |
5d0f6131 | 800 | |
4f1982b4 KB |
801 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); |
802 | res = nvme_trans_status_code(hdr, nvme_sc); | |
803 | if (res) | |
804 | goto out_free; | |
805 | if (nvme_sc) { | |
806 | res = nvme_sc; | |
807 | goto out_free; | |
808 | } | |
809 | ||
810 | if (readl(&dev->bar->vs) >= NVME_VS(1, 2)) { | |
811 | if (bitmap_empty(eui, len * 8)) { | |
812 | eui = id_ns->nguid; | |
813 | len = sizeof(id_ns->nguid); | |
814 | } | |
815 | } | |
816 | if (bitmap_empty(eui, len * 8)) | |
817 | goto scsi_string; | |
818 | ||
819 | inq_response[3] = 4 + len; /* Page Length */ | |
820 | /* Designation Descriptor start */ | |
821 | inq_response[4] = 0x01; /* Proto ID=0h | Code set=1h */ | |
822 | inq_response[5] = 0x02; /* PIV=0b | Asso=00b | Designator Type=2h */ | |
823 | inq_response[6] = 0x00; /* Rsvd */ | |
824 | inq_response[7] = len; /* Designator Length */ | |
825 | memcpy(&inq_response[8], eui, len); | |
826 | } else { | |
827 | scsi_string: | |
828 | if (alloc_len < 72) { | |
829 | res = nvme_trans_completion(hdr, | |
830 | SAM_STAT_CHECK_CONDITION, | |
831 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
832 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
833 | goto out_free; | |
834 | } | |
835 | inq_response[3] = 0x48; /* Page Length */ | |
836 | /* Designation Descriptor start */ | |
837 | inq_response[4] = 0x03; /* Proto ID=0h | Code set=3h */ | |
838 | inq_response[5] = 0x08; /* PIV=0b | Asso=00b | Designator Type=8h */ | |
839 | inq_response[6] = 0x00; /* Rsvd */ | |
840 | inq_response[7] = 0x44; /* Designator Length */ | |
841 | ||
842 | sprintf(&inq_response[8], "%04x", dev->pci_dev->vendor); | |
843 | memcpy(&inq_response[12], dev->model, sizeof(dev->model)); | |
844 | sprintf(&inq_response[52], "%04x", tmp_id); | |
845 | memcpy(&inq_response[56], dev->serial, sizeof(dev->serial)); | |
846 | } | |
847 | xfer_len = alloc_len; | |
5d0f6131 VV |
848 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); |
849 | ||
850 | out_free: | |
851 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
852 | dma_addr); | |
853 | out_dma: | |
854 | return res; | |
855 | } | |
856 | ||
857 | static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
858 | int alloc_len) | |
859 | { | |
860 | u8 *inq_response; | |
861 | int res = SNTI_TRANSLATION_SUCCESS; | |
862 | int nvme_sc; | |
863 | struct nvme_dev *dev = ns->dev; | |
864 | dma_addr_t dma_addr; | |
865 | void *mem; | |
866 | struct nvme_id_ctrl *id_ctrl; | |
867 | struct nvme_id_ns *id_ns; | |
868 | int xfer_len; | |
869 | u8 microcode = 0x80; | |
870 | u8 spt; | |
871 | u8 spt_lut[8] = {0, 0, 2, 1, 4, 6, 5, 7}; | |
872 | u8 grd_chk, app_chk, ref_chk, protect; | |
873 | u8 uask_sup = 0x20; | |
874 | u8 v_sup; | |
875 | u8 luiclr = 0x01; | |
876 | ||
877 | inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); | |
878 | if (inq_response == NULL) { | |
879 | res = -ENOMEM; | |
880 | goto out_mem; | |
881 | } | |
882 | ||
883 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
884 | &dma_addr, GFP_KERNEL); | |
885 | if (mem == NULL) { | |
886 | res = -ENOMEM; | |
887 | goto out_dma; | |
888 | } | |
889 | ||
890 | /* nvme ns identify */ | |
891 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
892 | res = nvme_trans_status_code(hdr, nvme_sc); | |
893 | if (res) | |
894 | goto out_free; | |
895 | if (nvme_sc) { | |
896 | res = nvme_sc; | |
897 | goto out_free; | |
898 | } | |
899 | id_ns = mem; | |
900 | spt = spt_lut[(id_ns->dpc) & 0x07] << 3; | |
901 | (id_ns->dps) ? (protect = 0x01) : (protect = 0); | |
902 | grd_chk = protect << 2; | |
903 | app_chk = protect << 1; | |
904 | ref_chk = protect; | |
905 | ||
906 | /* nvme controller identify */ | |
907 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
908 | res = nvme_trans_status_code(hdr, nvme_sc); | |
909 | if (res) | |
910 | goto out_free; | |
911 | if (nvme_sc) { | |
912 | res = nvme_sc; | |
913 | goto out_free; | |
914 | } | |
915 | id_ctrl = mem; | |
916 | v_sup = id_ctrl->vwc; | |
917 | ||
918 | memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
919 | inq_response[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE; /* Page Code */ | |
920 | inq_response[2] = 0x00; /* Page Length MSB */ | |
921 | inq_response[3] = 0x3C; /* Page Length LSB */ | |
922 | inq_response[4] = microcode | spt | grd_chk | app_chk | ref_chk; | |
923 | inq_response[5] = uask_sup; | |
924 | inq_response[6] = v_sup; | |
925 | inq_response[7] = luiclr; | |
926 | inq_response[8] = 0; | |
927 | inq_response[9] = 0; | |
928 | ||
929 | xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
930 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
931 | ||
932 | out_free: | |
933 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
934 | dma_addr); | |
935 | out_dma: | |
936 | kfree(inq_response); | |
937 | out_mem: | |
938 | return res; | |
939 | } | |
940 | ||
941 | static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
942 | int alloc_len) | |
943 | { | |
944 | u8 *inq_response; | |
945 | int res = SNTI_TRANSLATION_SUCCESS; | |
946 | int xfer_len; | |
947 | ||
03ea83e9 | 948 | inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); |
5d0f6131 VV |
949 | if (inq_response == NULL) { |
950 | res = -ENOMEM; | |
951 | goto out_mem; | |
952 | } | |
953 | ||
5d0f6131 VV |
954 | inq_response[1] = INQ_BDEV_CHARACTERISTICS_PAGE; /* Page Code */ |
955 | inq_response[2] = 0x00; /* Page Length MSB */ | |
956 | inq_response[3] = 0x3C; /* Page Length LSB */ | |
957 | inq_response[4] = 0x00; /* Medium Rotation Rate MSB */ | |
958 | inq_response[5] = 0x01; /* Medium Rotation Rate LSB */ | |
959 | inq_response[6] = 0x00; /* Form Factor */ | |
960 | ||
961 | xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
962 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
963 | ||
964 | kfree(inq_response); | |
965 | out_mem: | |
966 | return res; | |
967 | } | |
968 | ||
969 | /* LOG SENSE Helper Functions */ | |
970 | ||
971 | static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
972 | int alloc_len) | |
973 | { | |
974 | int res = SNTI_TRANSLATION_SUCCESS; | |
975 | int xfer_len; | |
976 | u8 *log_response; | |
977 | ||
03ea83e9 | 978 | log_response = kzalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH, GFP_KERNEL); |
5d0f6131 VV |
979 | if (log_response == NULL) { |
980 | res = -ENOMEM; | |
981 | goto out_mem; | |
982 | } | |
5d0f6131 VV |
983 | |
984 | log_response[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE; | |
985 | /* Subpage=0x00, Page Length MSB=0 */ | |
986 | log_response[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH; | |
987 | log_response[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE; | |
988 | log_response[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE; | |
989 | log_response[6] = LOG_PAGE_TEMPERATURE_PAGE; | |
990 | ||
991 | xfer_len = min(alloc_len, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH); | |
992 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
993 | ||
994 | kfree(log_response); | |
995 | out_mem: | |
996 | return res; | |
997 | } | |
998 | ||
999 | static int nvme_trans_log_info_exceptions(struct nvme_ns *ns, | |
1000 | struct sg_io_hdr *hdr, int alloc_len) | |
1001 | { | |
1002 | int res = SNTI_TRANSLATION_SUCCESS; | |
1003 | int xfer_len; | |
1004 | u8 *log_response; | |
1005 | struct nvme_command c; | |
1006 | struct nvme_dev *dev = ns->dev; | |
1007 | struct nvme_smart_log *smart_log; | |
1008 | dma_addr_t dma_addr; | |
1009 | void *mem; | |
1010 | u8 temp_c; | |
1011 | u16 temp_k; | |
1012 | ||
03ea83e9 | 1013 | log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL); |
5d0f6131 VV |
1014 | if (log_response == NULL) { |
1015 | res = -ENOMEM; | |
1016 | goto out_mem; | |
1017 | } | |
5d0f6131 VV |
1018 | |
1019 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1020 | sizeof(struct nvme_smart_log), | |
1021 | &dma_addr, GFP_KERNEL); | |
1022 | if (mem == NULL) { | |
1023 | res = -ENOMEM; | |
1024 | goto out_dma; | |
1025 | } | |
1026 | ||
1027 | /* Get SMART Log Page */ | |
1028 | memset(&c, 0, sizeof(c)); | |
1029 | c.common.opcode = nvme_admin_get_log_page; | |
1030 | c.common.nsid = cpu_to_le32(0xFFFFFFFF); | |
1031 | c.common.prp1 = cpu_to_le64(dma_addr); | |
4131f2fc | 1032 | c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) / |
ef351b97 | 1033 | BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART); |
5d0f6131 VV |
1034 | res = nvme_submit_admin_cmd(dev, &c, NULL); |
1035 | if (res != NVME_SC_SUCCESS) { | |
1036 | temp_c = LOG_TEMP_UNKNOWN; | |
1037 | } else { | |
1038 | smart_log = mem; | |
1039 | temp_k = (smart_log->temperature[1] << 8) + | |
1040 | (smart_log->temperature[0]); | |
1041 | temp_c = temp_k - KELVIN_TEMP_FACTOR; | |
1042 | } | |
1043 | ||
1044 | log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE; | |
1045 | /* Subpage=0x00, Page Length MSB=0 */ | |
1046 | log_response[3] = REMAINING_INFO_EXCP_PAGE_LENGTH; | |
1047 | /* Informational Exceptions Log Parameter 1 Start */ | |
1048 | /* Parameter Code=0x0000 bytes 4,5 */ | |
1049 | log_response[6] = 0x23; /* DU=0, TSD=1, ETC=0, TMC=0, FMT_AND_LNK=11b */ | |
1050 | log_response[7] = 0x04; /* PARAMETER LENGTH */ | |
1051 | /* Add sense Code and qualifier = 0x00 each */ | |
1052 | /* Use Temperature from NVMe Get Log Page, convert to C from K */ | |
1053 | log_response[10] = temp_c; | |
1054 | ||
1055 | xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH); | |
1056 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
1057 | ||
1058 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), | |
1059 | mem, dma_addr); | |
1060 | out_dma: | |
1061 | kfree(log_response); | |
1062 | out_mem: | |
1063 | return res; | |
1064 | } | |
1065 | ||
1066 | static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1067 | int alloc_len) | |
1068 | { | |
1069 | int res = SNTI_TRANSLATION_SUCCESS; | |
1070 | int xfer_len; | |
1071 | u8 *log_response; | |
1072 | struct nvme_command c; | |
1073 | struct nvme_dev *dev = ns->dev; | |
1074 | struct nvme_smart_log *smart_log; | |
1075 | dma_addr_t dma_addr; | |
1076 | void *mem; | |
1077 | u32 feature_resp; | |
1078 | u8 temp_c_cur, temp_c_thresh; | |
1079 | u16 temp_k; | |
1080 | ||
03ea83e9 | 1081 | log_response = kzalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL); |
5d0f6131 VV |
1082 | if (log_response == NULL) { |
1083 | res = -ENOMEM; | |
1084 | goto out_mem; | |
1085 | } | |
5d0f6131 VV |
1086 | |
1087 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1088 | sizeof(struct nvme_smart_log), | |
1089 | &dma_addr, GFP_KERNEL); | |
1090 | if (mem == NULL) { | |
1091 | res = -ENOMEM; | |
1092 | goto out_dma; | |
1093 | } | |
1094 | ||
1095 | /* Get SMART Log Page */ | |
1096 | memset(&c, 0, sizeof(c)); | |
1097 | c.common.opcode = nvme_admin_get_log_page; | |
1098 | c.common.nsid = cpu_to_le32(0xFFFFFFFF); | |
1099 | c.common.prp1 = cpu_to_le64(dma_addr); | |
4131f2fc | 1100 | c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) / |
ef351b97 | 1101 | BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART); |
5d0f6131 VV |
1102 | res = nvme_submit_admin_cmd(dev, &c, NULL); |
1103 | if (res != NVME_SC_SUCCESS) { | |
1104 | temp_c_cur = LOG_TEMP_UNKNOWN; | |
1105 | } else { | |
1106 | smart_log = mem; | |
1107 | temp_k = (smart_log->temperature[1] << 8) + | |
1108 | (smart_log->temperature[0]); | |
1109 | temp_c_cur = temp_k - KELVIN_TEMP_FACTOR; | |
1110 | } | |
1111 | ||
1112 | /* Get Features for Temp Threshold */ | |
1113 | res = nvme_get_features(dev, NVME_FEAT_TEMP_THRESH, 0, 0, | |
1114 | &feature_resp); | |
1115 | if (res != NVME_SC_SUCCESS) | |
1116 | temp_c_thresh = LOG_TEMP_UNKNOWN; | |
1117 | else | |
1118 | temp_c_thresh = (feature_resp & 0xFFFF) - KELVIN_TEMP_FACTOR; | |
1119 | ||
1120 | log_response[0] = LOG_PAGE_TEMPERATURE_PAGE; | |
1121 | /* Subpage=0x00, Page Length MSB=0 */ | |
1122 | log_response[3] = REMAINING_TEMP_PAGE_LENGTH; | |
1123 | /* Temperature Log Parameter 1 (Temperature) Start */ | |
1124 | /* Parameter Code = 0x0000 */ | |
1125 | log_response[6] = 0x01; /* Format and Linking = 01b */ | |
1126 | log_response[7] = 0x02; /* Parameter Length */ | |
1127 | /* Use Temperature from NVMe Get Log Page, convert to C from K */ | |
1128 | log_response[9] = temp_c_cur; | |
1129 | /* Temperature Log Parameter 2 (Reference Temperature) Start */ | |
1130 | log_response[11] = 0x01; /* Parameter Code = 0x0001 */ | |
1131 | log_response[12] = 0x01; /* Format and Linking = 01b */ | |
1132 | log_response[13] = 0x02; /* Parameter Length */ | |
1133 | /* Use Temperature Thresh from NVMe Get Log Page, convert to C from K */ | |
1134 | log_response[15] = temp_c_thresh; | |
1135 | ||
1136 | xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH); | |
1137 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
1138 | ||
1139 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), | |
1140 | mem, dma_addr); | |
1141 | out_dma: | |
1142 | kfree(log_response); | |
1143 | out_mem: | |
1144 | return res; | |
1145 | } | |
1146 | ||
1147 | /* MODE SENSE Helper Functions */ | |
1148 | ||
1149 | static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa, | |
1150 | u16 mode_data_length, u16 blk_desc_len) | |
1151 | { | |
1152 | /* Quick check to make sure I don't stomp on my own memory... */ | |
1153 | if ((cdb10 && len < 8) || (!cdb10 && len < 4)) | |
1154 | return SNTI_INTERNAL_ERROR; | |
1155 | ||
1156 | if (cdb10) { | |
1157 | resp[0] = (mode_data_length & 0xFF00) >> 8; | |
1158 | resp[1] = (mode_data_length & 0x00FF); | |
1159 | /* resp[2] and [3] are zero */ | |
1160 | resp[4] = llbaa; | |
1161 | resp[5] = RESERVED_FIELD; | |
1162 | resp[6] = (blk_desc_len & 0xFF00) >> 8; | |
1163 | resp[7] = (blk_desc_len & 0x00FF); | |
1164 | } else { | |
1165 | resp[0] = (mode_data_length & 0x00FF); | |
1166 | /* resp[1] and [2] are zero */ | |
1167 | resp[3] = (blk_desc_len & 0x00FF); | |
1168 | } | |
1169 | ||
1170 | return SNTI_TRANSLATION_SUCCESS; | |
1171 | } | |
1172 | ||
1173 | static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1174 | u8 *resp, int len, u8 llbaa) | |
1175 | { | |
1176 | int res = SNTI_TRANSLATION_SUCCESS; | |
1177 | int nvme_sc; | |
1178 | struct nvme_dev *dev = ns->dev; | |
1179 | dma_addr_t dma_addr; | |
1180 | void *mem; | |
1181 | struct nvme_id_ns *id_ns; | |
1182 | u8 flbas; | |
1183 | u32 lba_length; | |
1184 | ||
1185 | if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN) | |
1186 | return SNTI_INTERNAL_ERROR; | |
1187 | else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN) | |
1188 | return SNTI_INTERNAL_ERROR; | |
1189 | ||
1190 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1191 | &dma_addr, GFP_KERNEL); | |
1192 | if (mem == NULL) { | |
1193 | res = -ENOMEM; | |
1194 | goto out; | |
1195 | } | |
1196 | ||
1197 | /* nvme ns identify */ | |
1198 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1199 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1200 | if (res) | |
1201 | goto out_dma; | |
1202 | if (nvme_sc) { | |
1203 | res = nvme_sc; | |
1204 | goto out_dma; | |
1205 | } | |
1206 | id_ns = mem; | |
1207 | flbas = (id_ns->flbas) & 0x0F; | |
1208 | lba_length = (1 << (id_ns->lbaf[flbas].ds)); | |
1209 | ||
1210 | if (llbaa == 0) { | |
8741ee4c | 1211 | __be32 tmp_cap = cpu_to_be32(le64_to_cpu(id_ns->ncap)); |
5d0f6131 | 1212 | /* Byte 4 is reserved */ |
8741ee4c | 1213 | __be32 tmp_len = cpu_to_be32(lba_length & 0x00FFFFFF); |
5d0f6131 VV |
1214 | |
1215 | memcpy(resp, &tmp_cap, sizeof(u32)); | |
1216 | memcpy(&resp[4], &tmp_len, sizeof(u32)); | |
1217 | } else { | |
8741ee4c VV |
1218 | __be64 tmp_cap = cpu_to_be64(le64_to_cpu(id_ns->ncap)); |
1219 | __be32 tmp_len = cpu_to_be32(lba_length); | |
5d0f6131 VV |
1220 | |
1221 | memcpy(resp, &tmp_cap, sizeof(u64)); | |
1222 | /* Bytes 8, 9, 10, 11 are reserved */ | |
1223 | memcpy(&resp[12], &tmp_len, sizeof(u32)); | |
1224 | } | |
1225 | ||
1226 | out_dma: | |
1227 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
1228 | dma_addr); | |
1229 | out: | |
1230 | return res; | |
1231 | } | |
1232 | ||
1233 | static int nvme_trans_fill_control_page(struct nvme_ns *ns, | |
1234 | struct sg_io_hdr *hdr, u8 *resp, | |
1235 | int len) | |
1236 | { | |
1237 | if (len < MODE_PAGE_CONTROL_LEN) | |
1238 | return SNTI_INTERNAL_ERROR; | |
1239 | ||
1240 | resp[0] = MODE_PAGE_CONTROL; | |
1241 | resp[1] = MODE_PAGE_CONTROL_LEN_FIELD; | |
1242 | resp[2] = 0x0E; /* TST=000b, TMF_ONLY=0, DPICZ=1, | |
1243 | * D_SENSE=1, GLTSD=1, RLEC=0 */ | |
1244 | resp[3] = 0x12; /* Q_ALGO_MODIFIER=1h, NUAR=0, QERR=01b */ | |
1245 | /* Byte 4: VS=0, RAC=0, UA_INT=0, SWP=0 */ | |
1246 | resp[5] = 0x40; /* ATO=0, TAS=1, ATMPE=0, RWWP=0, AUTOLOAD=0 */ | |
1247 | /* resp[6] and [7] are obsolete, thus zero */ | |
1248 | resp[8] = 0xFF; /* Busy timeout period = 0xffff */ | |
1249 | resp[9] = 0xFF; | |
1250 | /* Bytes 10,11: Extended selftest completion time = 0x0000 */ | |
1251 | ||
1252 | return SNTI_TRANSLATION_SUCCESS; | |
1253 | } | |
1254 | ||
1255 | static int nvme_trans_fill_caching_page(struct nvme_ns *ns, | |
1256 | struct sg_io_hdr *hdr, | |
1257 | u8 *resp, int len) | |
1258 | { | |
1259 | int res = SNTI_TRANSLATION_SUCCESS; | |
1260 | int nvme_sc; | |
1261 | struct nvme_dev *dev = ns->dev; | |
1262 | u32 feature_resp; | |
1263 | u8 vwc; | |
1264 | ||
1265 | if (len < MODE_PAGE_CACHING_LEN) | |
1266 | return SNTI_INTERNAL_ERROR; | |
1267 | ||
1268 | nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0, | |
1269 | &feature_resp); | |
1270 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1271 | if (res) | |
1272 | goto out; | |
1273 | if (nvme_sc) { | |
1274 | res = nvme_sc; | |
1275 | goto out; | |
1276 | } | |
1277 | vwc = feature_resp & 0x00000001; | |
1278 | ||
1279 | resp[0] = MODE_PAGE_CACHING; | |
1280 | resp[1] = MODE_PAGE_CACHING_LEN_FIELD; | |
1281 | resp[2] = vwc << 2; | |
1282 | ||
1283 | out: | |
1284 | return res; | |
1285 | } | |
1286 | ||
1287 | static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns, | |
1288 | struct sg_io_hdr *hdr, u8 *resp, | |
1289 | int len) | |
1290 | { | |
1291 | int res = SNTI_TRANSLATION_SUCCESS; | |
1292 | ||
1293 | if (len < MODE_PAGE_POW_CND_LEN) | |
1294 | return SNTI_INTERNAL_ERROR; | |
1295 | ||
1296 | resp[0] = MODE_PAGE_POWER_CONDITION; | |
1297 | resp[1] = MODE_PAGE_POW_CND_LEN_FIELD; | |
1298 | /* All other bytes are zero */ | |
1299 | ||
1300 | return res; | |
1301 | } | |
1302 | ||
1303 | static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns, | |
1304 | struct sg_io_hdr *hdr, u8 *resp, | |
1305 | int len) | |
1306 | { | |
1307 | int res = SNTI_TRANSLATION_SUCCESS; | |
1308 | ||
1309 | if (len < MODE_PAGE_INF_EXC_LEN) | |
1310 | return SNTI_INTERNAL_ERROR; | |
1311 | ||
1312 | resp[0] = MODE_PAGE_INFO_EXCEP; | |
1313 | resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD; | |
1314 | resp[2] = 0x88; | |
1315 | /* All other bytes are zero */ | |
1316 | ||
1317 | return res; | |
1318 | } | |
1319 | ||
1320 | static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1321 | u8 *resp, int len) | |
1322 | { | |
1323 | int res = SNTI_TRANSLATION_SUCCESS; | |
1324 | u16 mode_pages_offset_1 = 0; | |
1325 | u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4; | |
1326 | ||
1327 | mode_pages_offset_2 = mode_pages_offset_1 + MODE_PAGE_CACHING_LEN; | |
1328 | mode_pages_offset_3 = mode_pages_offset_2 + MODE_PAGE_CONTROL_LEN; | |
1329 | mode_pages_offset_4 = mode_pages_offset_3 + MODE_PAGE_POW_CND_LEN; | |
1330 | ||
1331 | res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1], | |
1332 | MODE_PAGE_CACHING_LEN); | |
1333 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1334 | goto out; | |
1335 | res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2], | |
1336 | MODE_PAGE_CONTROL_LEN); | |
1337 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1338 | goto out; | |
1339 | res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3], | |
1340 | MODE_PAGE_POW_CND_LEN); | |
1341 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1342 | goto out; | |
1343 | res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4], | |
1344 | MODE_PAGE_INF_EXC_LEN); | |
1345 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1346 | goto out; | |
1347 | ||
1348 | out: | |
1349 | return res; | |
1350 | } | |
1351 | ||
1352 | static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa) | |
1353 | { | |
1354 | if (dbd == MODE_SENSE_BLK_DESC_ENABLED) { | |
1355 | /* SPC-4: len = 8 x Num_of_descriptors if llbaa = 0, 16x if 1 */ | |
1356 | return 8 * (llbaa + 1) * MODE_SENSE_BLK_DESC_COUNT; | |
1357 | } else { | |
1358 | return 0; | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | static int nvme_trans_mode_page_create(struct nvme_ns *ns, | |
1363 | struct sg_io_hdr *hdr, u8 *cmd, | |
1364 | u16 alloc_len, u8 cdb10, | |
1365 | int (*mode_page_fill_func) | |
1366 | (struct nvme_ns *, | |
1367 | struct sg_io_hdr *hdr, u8 *, int), | |
1368 | u16 mode_pages_tot_len) | |
1369 | { | |
1370 | int res = SNTI_TRANSLATION_SUCCESS; | |
1371 | int xfer_len; | |
1372 | u8 *response; | |
1373 | u8 dbd, llbaa; | |
1374 | u16 resp_size; | |
1375 | int mph_size; | |
1376 | u16 mode_pages_offset_1; | |
1377 | u16 blk_desc_len, blk_desc_offset, mode_data_length; | |
1378 | ||
1379 | dbd = GET_MODE_SENSE_DBD(cmd); | |
1380 | llbaa = GET_MODE_SENSE_LLBAA(cmd); | |
1381 | mph_size = GET_MODE_SENSE_MPH_SIZE(cdb10); | |
1382 | blk_desc_len = nvme_trans_get_blk_desc_len(dbd, llbaa); | |
1383 | ||
1384 | resp_size = mph_size + blk_desc_len + mode_pages_tot_len; | |
1385 | /* Refer spc4r34 Table 440 for calculation of Mode data Length field */ | |
1386 | mode_data_length = 3 + (3 * cdb10) + blk_desc_len + mode_pages_tot_len; | |
1387 | ||
1388 | blk_desc_offset = mph_size; | |
1389 | mode_pages_offset_1 = blk_desc_offset + blk_desc_len; | |
1390 | ||
03ea83e9 | 1391 | response = kzalloc(resp_size, GFP_KERNEL); |
5d0f6131 VV |
1392 | if (response == NULL) { |
1393 | res = -ENOMEM; | |
1394 | goto out_mem; | |
1395 | } | |
5d0f6131 VV |
1396 | |
1397 | res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10, | |
1398 | llbaa, mode_data_length, blk_desc_len); | |
1399 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1400 | goto out_free; | |
1401 | if (blk_desc_len > 0) { | |
1402 | res = nvme_trans_fill_blk_desc(ns, hdr, | |
1403 | &response[blk_desc_offset], | |
1404 | blk_desc_len, llbaa); | |
1405 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1406 | goto out_free; | |
1407 | } | |
1408 | res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1], | |
1409 | mode_pages_tot_len); | |
1410 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1411 | goto out_free; | |
1412 | ||
1413 | xfer_len = min(alloc_len, resp_size); | |
1414 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
1415 | ||
1416 | out_free: | |
1417 | kfree(response); | |
1418 | out_mem: | |
1419 | return res; | |
1420 | } | |
1421 | ||
1422 | /* Read Capacity Helper Functions */ | |
1423 | ||
1424 | static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns, | |
1425 | u8 cdb16) | |
1426 | { | |
1427 | u8 flbas; | |
1428 | u32 lba_length; | |
1429 | u64 rlba; | |
1430 | u8 prot_en; | |
1431 | u8 p_type_lut[4] = {0, 0, 1, 2}; | |
8741ee4c VV |
1432 | __be64 tmp_rlba; |
1433 | __be32 tmp_rlba_32; | |
1434 | __be32 tmp_len; | |
5d0f6131 VV |
1435 | |
1436 | flbas = (id_ns->flbas) & 0x0F; | |
1437 | lba_length = (1 << (id_ns->lbaf[flbas].ds)); | |
1438 | rlba = le64_to_cpup(&id_ns->nsze) - 1; | |
1439 | (id_ns->dps) ? (prot_en = 0x01) : (prot_en = 0); | |
1440 | ||
1441 | if (!cdb16) { | |
1442 | if (rlba > 0xFFFFFFFF) | |
1443 | rlba = 0xFFFFFFFF; | |
1444 | tmp_rlba_32 = cpu_to_be32(rlba); | |
1445 | tmp_len = cpu_to_be32(lba_length); | |
1446 | memcpy(response, &tmp_rlba_32, sizeof(u32)); | |
1447 | memcpy(&response[4], &tmp_len, sizeof(u32)); | |
1448 | } else { | |
1449 | tmp_rlba = cpu_to_be64(rlba); | |
1450 | tmp_len = cpu_to_be32(lba_length); | |
1451 | memcpy(response, &tmp_rlba, sizeof(u64)); | |
1452 | memcpy(&response[8], &tmp_len, sizeof(u32)); | |
1453 | response[12] = (p_type_lut[id_ns->dps & 0x3] << 1) | prot_en; | |
1454 | /* P_I_Exponent = 0x0 | LBPPBE = 0x0 */ | |
1455 | /* LBPME = 0 | LBPRZ = 0 | LALBA = 0x00 */ | |
1456 | /* Bytes 16-31 - Reserved */ | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | /* Start Stop Unit Helper Functions */ | |
1461 | ||
1462 | static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1463 | u8 pc, u8 pcmod, u8 start) | |
1464 | { | |
1465 | int res = SNTI_TRANSLATION_SUCCESS; | |
1466 | int nvme_sc; | |
1467 | struct nvme_dev *dev = ns->dev; | |
1468 | dma_addr_t dma_addr; | |
1469 | void *mem; | |
1470 | struct nvme_id_ctrl *id_ctrl; | |
1471 | int lowest_pow_st; /* max npss = lowest power consumption */ | |
1472 | unsigned ps_desired = 0; | |
1473 | ||
1474 | /* NVMe Controller Identify */ | |
1475 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1476 | sizeof(struct nvme_id_ctrl), | |
1477 | &dma_addr, GFP_KERNEL); | |
1478 | if (mem == NULL) { | |
1479 | res = -ENOMEM; | |
1480 | goto out; | |
1481 | } | |
1482 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
1483 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1484 | if (res) | |
1485 | goto out_dma; | |
1486 | if (nvme_sc) { | |
1487 | res = nvme_sc; | |
1488 | goto out_dma; | |
1489 | } | |
1490 | id_ctrl = mem; | |
b8e08084 | 1491 | lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1)); |
5d0f6131 VV |
1492 | |
1493 | switch (pc) { | |
1494 | case NVME_POWER_STATE_START_VALID: | |
1495 | /* Action unspecified if POWER CONDITION MODIFIER != 0 */ | |
1496 | if (pcmod == 0 && start == 0x1) | |
1497 | ps_desired = POWER_STATE_0; | |
1498 | if (pcmod == 0 && start == 0x0) | |
1499 | ps_desired = lowest_pow_st; | |
1500 | break; | |
1501 | case NVME_POWER_STATE_ACTIVE: | |
1502 | /* Action unspecified if POWER CONDITION MODIFIER != 0 */ | |
1503 | if (pcmod == 0) | |
1504 | ps_desired = POWER_STATE_0; | |
1505 | break; | |
1506 | case NVME_POWER_STATE_IDLE: | |
1507 | /* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */ | |
5d0f6131 | 1508 | if (pcmod == 0x0) |
b8e08084 | 1509 | ps_desired = POWER_STATE_1; |
5d0f6131 | 1510 | else if (pcmod == 0x1) |
b8e08084 | 1511 | ps_desired = POWER_STATE_2; |
5d0f6131 | 1512 | else if (pcmod == 0x2) |
b8e08084 | 1513 | ps_desired = POWER_STATE_3; |
5d0f6131 VV |
1514 | break; |
1515 | case NVME_POWER_STATE_STANDBY: | |
1516 | /* Action unspecified if POWER CONDITION MODIFIER != [0,1] */ | |
1517 | if (pcmod == 0x0) | |
b8e08084 | 1518 | ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2)); |
5d0f6131 | 1519 | else if (pcmod == 0x1) |
b8e08084 | 1520 | ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1)); |
5d0f6131 VV |
1521 | break; |
1522 | case NVME_POWER_STATE_LU_CONTROL: | |
1523 | default: | |
1524 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1525 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1526 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1527 | break; | |
1528 | } | |
1529 | nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0, | |
1530 | NULL); | |
1531 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1532 | if (res) | |
1533 | goto out_dma; | |
1534 | if (nvme_sc) | |
1535 | res = nvme_sc; | |
1536 | out_dma: | |
1537 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, | |
1538 | dma_addr); | |
1539 | out: | |
1540 | return res; | |
1541 | } | |
1542 | ||
1543 | /* Write Buffer Helper Functions */ | |
1544 | /* Also using this for Format Unit with hdr passed as NULL, and buffer_id, 0 */ | |
1545 | ||
1546 | static int nvme_trans_send_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1547 | u8 opcode, u32 tot_len, u32 offset, | |
1548 | u8 buffer_id) | |
1549 | { | |
1550 | int res = SNTI_TRANSLATION_SUCCESS; | |
1551 | int nvme_sc; | |
1552 | struct nvme_dev *dev = ns->dev; | |
1553 | struct nvme_command c; | |
1554 | struct nvme_iod *iod = NULL; | |
1555 | unsigned length; | |
1556 | ||
1557 | memset(&c, 0, sizeof(c)); | |
1558 | c.common.opcode = opcode; | |
1559 | if (opcode == nvme_admin_download_fw) { | |
1560 | if (hdr->iovec_count > 0) { | |
1561 | /* Assuming SGL is not allowed for this command */ | |
1562 | res = nvme_trans_completion(hdr, | |
1563 | SAM_STAT_CHECK_CONDITION, | |
1564 | ILLEGAL_REQUEST, | |
1565 | SCSI_ASC_INVALID_CDB, | |
1566 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1567 | goto out; | |
1568 | } | |
1569 | iod = nvme_map_user_pages(dev, DMA_TO_DEVICE, | |
1570 | (unsigned long)hdr->dxferp, tot_len); | |
1571 | if (IS_ERR(iod)) { | |
1572 | res = PTR_ERR(iod); | |
1573 | goto out; | |
1574 | } | |
edd10d33 | 1575 | length = nvme_setup_prps(dev, iod, tot_len, GFP_KERNEL); |
5d0f6131 VV |
1576 | if (length != tot_len) { |
1577 | res = -ENOMEM; | |
1578 | goto out_unmap; | |
1579 | } | |
1580 | ||
edd10d33 KB |
1581 | c.dlfw.prp1 = cpu_to_le64(sg_dma_address(iod->sg)); |
1582 | c.dlfw.prp2 = cpu_to_le64(iod->first_dma); | |
8741ee4c VV |
1583 | c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1); |
1584 | c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS); | |
5d0f6131 | 1585 | } else if (opcode == nvme_admin_activate_fw) { |
ab3ea5bf MW |
1586 | u32 cdw10 = buffer_id | NVME_FWACT_REPL_ACTV; |
1587 | c.common.cdw10[0] = cpu_to_le32(cdw10); | |
5d0f6131 VV |
1588 | } |
1589 | ||
1590 | nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); | |
1591 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1592 | if (res) | |
1593 | goto out_unmap; | |
1594 | if (nvme_sc) | |
1595 | res = nvme_sc; | |
1596 | ||
1597 | out_unmap: | |
1598 | if (opcode == nvme_admin_download_fw) { | |
1599 | nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod); | |
1600 | nvme_free_iod(dev, iod); | |
1601 | } | |
1602 | out: | |
1603 | return res; | |
1604 | } | |
1605 | ||
1606 | /* Mode Select Helper Functions */ | |
1607 | ||
1608 | static inline void nvme_trans_modesel_get_bd_len(u8 *parm_list, u8 cdb10, | |
1609 | u16 *bd_len, u8 *llbaa) | |
1610 | { | |
1611 | if (cdb10) { | |
1612 | /* 10 Byte CDB */ | |
1613 | *bd_len = (parm_list[MODE_SELECT_10_BD_OFFSET] << 8) + | |
1614 | parm_list[MODE_SELECT_10_BD_OFFSET + 1]; | |
9ac16938 | 1615 | *llbaa = parm_list[MODE_SELECT_10_LLBAA_OFFSET] & |
5d0f6131 VV |
1616 | MODE_SELECT_10_LLBAA_MASK; |
1617 | } else { | |
1618 | /* 6 Byte CDB */ | |
1619 | *bd_len = parm_list[MODE_SELECT_6_BD_OFFSET]; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list, | |
1624 | u16 idx, u16 bd_len, u8 llbaa) | |
1625 | { | |
1626 | u16 bd_num; | |
1627 | ||
1628 | bd_num = bd_len / ((llbaa == 0) ? | |
1629 | SHORT_DESC_BLOCK : LONG_DESC_BLOCK); | |
1630 | /* Store block descriptor info if a FORMAT UNIT comes later */ | |
1631 | /* TODO Saving 1st BD info; what to do if multiple BD received? */ | |
1632 | if (llbaa == 0) { | |
1633 | /* Standard Block Descriptor - spc4r34 7.5.5.1 */ | |
1634 | ns->mode_select_num_blocks = | |
1635 | (parm_list[idx + 1] << 16) + | |
1636 | (parm_list[idx + 2] << 8) + | |
1637 | (parm_list[idx + 3]); | |
1638 | ||
1639 | ns->mode_select_block_len = | |
1640 | (parm_list[idx + 5] << 16) + | |
1641 | (parm_list[idx + 6] << 8) + | |
1642 | (parm_list[idx + 7]); | |
1643 | } else { | |
1644 | /* Long LBA Block Descriptor - sbc3r27 6.4.2.3 */ | |
1645 | ns->mode_select_num_blocks = | |
1646 | (((u64)parm_list[idx + 0]) << 56) + | |
1647 | (((u64)parm_list[idx + 1]) << 48) + | |
1648 | (((u64)parm_list[idx + 2]) << 40) + | |
1649 | (((u64)parm_list[idx + 3]) << 32) + | |
1650 | (((u64)parm_list[idx + 4]) << 24) + | |
1651 | (((u64)parm_list[idx + 5]) << 16) + | |
1652 | (((u64)parm_list[idx + 6]) << 8) + | |
1653 | ((u64)parm_list[idx + 7]); | |
1654 | ||
1655 | ns->mode_select_block_len = | |
1656 | (parm_list[idx + 12] << 24) + | |
1657 | (parm_list[idx + 13] << 16) + | |
1658 | (parm_list[idx + 14] << 8) + | |
1659 | (parm_list[idx + 15]); | |
1660 | } | |
1661 | } | |
1662 | ||
710a143d | 1663 | static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, |
5d0f6131 VV |
1664 | u8 *mode_page, u8 page_code) |
1665 | { | |
1666 | int res = SNTI_TRANSLATION_SUCCESS; | |
1667 | int nvme_sc; | |
1668 | struct nvme_dev *dev = ns->dev; | |
1669 | unsigned dword11; | |
1670 | ||
1671 | switch (page_code) { | |
1672 | case MODE_PAGE_CACHING: | |
1673 | dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0); | |
1674 | nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11, | |
1675 | 0, NULL); | |
1676 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1677 | if (res) | |
1678 | break; | |
1679 | if (nvme_sc) { | |
1680 | res = nvme_sc; | |
1681 | break; | |
1682 | } | |
1683 | break; | |
1684 | case MODE_PAGE_CONTROL: | |
1685 | break; | |
1686 | case MODE_PAGE_POWER_CONDITION: | |
1687 | /* Verify the OS is not trying to set timers */ | |
1688 | if ((mode_page[2] & 0x01) != 0 || (mode_page[3] & 0x0F) != 0) { | |
1689 | res = nvme_trans_completion(hdr, | |
1690 | SAM_STAT_CHECK_CONDITION, | |
1691 | ILLEGAL_REQUEST, | |
1692 | SCSI_ASC_INVALID_PARAMETER, | |
1693 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1694 | if (!res) | |
1695 | res = SNTI_INTERNAL_ERROR; | |
1696 | break; | |
1697 | } | |
1698 | break; | |
1699 | default: | |
1700 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1701 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1702 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1703 | if (!res) | |
1704 | res = SNTI_INTERNAL_ERROR; | |
1705 | break; | |
1706 | } | |
1707 | ||
1708 | return res; | |
1709 | } | |
1710 | ||
1711 | static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1712 | u8 *cmd, u16 parm_list_len, u8 pf, | |
1713 | u8 sp, u8 cdb10) | |
1714 | { | |
1715 | int res = SNTI_TRANSLATION_SUCCESS; | |
1716 | u8 *parm_list; | |
1717 | u16 bd_len; | |
1718 | u8 llbaa = 0; | |
1719 | u16 index, saved_index; | |
1720 | u8 page_code; | |
1721 | u16 mp_size; | |
1722 | ||
1723 | /* Get parm list from data-in/out buffer */ | |
1724 | parm_list = kmalloc(parm_list_len, GFP_KERNEL); | |
1725 | if (parm_list == NULL) { | |
1726 | res = -ENOMEM; | |
1727 | goto out; | |
1728 | } | |
1729 | ||
1730 | res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len); | |
1731 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1732 | goto out_mem; | |
1733 | ||
1734 | nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa); | |
1735 | index = (cdb10) ? (MODE_SELECT_10_MPH_SIZE) : (MODE_SELECT_6_MPH_SIZE); | |
1736 | ||
1737 | if (bd_len != 0) { | |
1738 | /* Block Descriptors present, parse */ | |
1739 | nvme_trans_modesel_save_bd(ns, parm_list, index, bd_len, llbaa); | |
1740 | index += bd_len; | |
1741 | } | |
1742 | saved_index = index; | |
1743 | ||
1744 | /* Multiple mode pages may be present; iterate through all */ | |
1745 | /* In 1st Iteration, don't do NVME Command, only check for CDB errors */ | |
1746 | do { | |
1747 | page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK; | |
1748 | mp_size = parm_list[index + 1] + 2; | |
1749 | if ((page_code != MODE_PAGE_CACHING) && | |
1750 | (page_code != MODE_PAGE_CONTROL) && | |
1751 | (page_code != MODE_PAGE_POWER_CONDITION)) { | |
1752 | res = nvme_trans_completion(hdr, | |
1753 | SAM_STAT_CHECK_CONDITION, | |
1754 | ILLEGAL_REQUEST, | |
1755 | SCSI_ASC_INVALID_CDB, | |
1756 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1757 | goto out_mem; | |
1758 | } | |
1759 | index += mp_size; | |
1760 | } while (index < parm_list_len); | |
1761 | ||
1762 | /* In 2nd Iteration, do the NVME Commands */ | |
1763 | index = saved_index; | |
1764 | do { | |
1765 | page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK; | |
1766 | mp_size = parm_list[index + 1] + 2; | |
1767 | res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index], | |
1768 | page_code); | |
1769 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1770 | break; | |
1771 | index += mp_size; | |
1772 | } while (index < parm_list_len); | |
1773 | ||
1774 | out_mem: | |
1775 | kfree(parm_list); | |
1776 | out: | |
1777 | return res; | |
1778 | } | |
1779 | ||
1780 | /* Format Unit Helper Functions */ | |
1781 | ||
1782 | static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns, | |
1783 | struct sg_io_hdr *hdr) | |
1784 | { | |
1785 | int res = SNTI_TRANSLATION_SUCCESS; | |
1786 | int nvme_sc; | |
1787 | struct nvme_dev *dev = ns->dev; | |
1788 | dma_addr_t dma_addr; | |
1789 | void *mem; | |
1790 | struct nvme_id_ns *id_ns; | |
1791 | u8 flbas; | |
1792 | ||
1793 | /* | |
1794 | * SCSI Expects a MODE SELECT would have been issued prior to | |
1795 | * a FORMAT UNIT, and the block size and number would be used | |
1796 | * from the block descriptor in it. If a MODE SELECT had not | |
1797 | * been issued, FORMAT shall use the current values for both. | |
1798 | */ | |
1799 | ||
1800 | if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) { | |
1801 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1802 | sizeof(struct nvme_id_ns), &dma_addr, GFP_KERNEL); | |
1803 | if (mem == NULL) { | |
1804 | res = -ENOMEM; | |
1805 | goto out; | |
1806 | } | |
1807 | /* nvme ns identify */ | |
1808 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1809 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1810 | if (res) | |
1811 | goto out_dma; | |
1812 | if (nvme_sc) { | |
1813 | res = nvme_sc; | |
1814 | goto out_dma; | |
1815 | } | |
1816 | id_ns = mem; | |
1817 | ||
1818 | if (ns->mode_select_num_blocks == 0) | |
8741ee4c | 1819 | ns->mode_select_num_blocks = le64_to_cpu(id_ns->ncap); |
5d0f6131 VV |
1820 | if (ns->mode_select_block_len == 0) { |
1821 | flbas = (id_ns->flbas) & 0x0F; | |
1822 | ns->mode_select_block_len = | |
1823 | (1 << (id_ns->lbaf[flbas].ds)); | |
1824 | } | |
1825 | out_dma: | |
1826 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1827 | mem, dma_addr); | |
1828 | } | |
1829 | out: | |
1830 | return res; | |
1831 | } | |
1832 | ||
1833 | static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len, | |
1834 | u8 format_prot_info, u8 *nvme_pf_code) | |
1835 | { | |
1836 | int res = SNTI_TRANSLATION_SUCCESS; | |
1837 | u8 *parm_list; | |
1838 | u8 pf_usage, pf_code; | |
1839 | ||
1840 | parm_list = kmalloc(len, GFP_KERNEL); | |
1841 | if (parm_list == NULL) { | |
1842 | res = -ENOMEM; | |
1843 | goto out; | |
1844 | } | |
1845 | res = nvme_trans_copy_from_user(hdr, parm_list, len); | |
1846 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1847 | goto out_mem; | |
1848 | ||
1849 | if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] & | |
1850 | FORMAT_UNIT_IMMED_MASK) != 0) { | |
1851 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1852 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1853 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1854 | goto out_mem; | |
1855 | } | |
1856 | ||
1857 | if (len == FORMAT_UNIT_LONG_PARM_LIST_LEN && | |
1858 | (parm_list[FORMAT_UNIT_PROT_INT_OFFSET] & 0x0F) != 0) { | |
1859 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1860 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1861 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1862 | goto out_mem; | |
1863 | } | |
1864 | pf_usage = parm_list[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET] & | |
1865 | FORMAT_UNIT_PROT_FIELD_USAGE_MASK; | |
1866 | pf_code = (pf_usage << 2) | format_prot_info; | |
1867 | switch (pf_code) { | |
1868 | case 0: | |
1869 | *nvme_pf_code = 0; | |
1870 | break; | |
1871 | case 2: | |
1872 | *nvme_pf_code = 1; | |
1873 | break; | |
1874 | case 3: | |
1875 | *nvme_pf_code = 2; | |
1876 | break; | |
1877 | case 7: | |
1878 | *nvme_pf_code = 3; | |
1879 | break; | |
1880 | default: | |
1881 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1882 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1883 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1884 | break; | |
1885 | } | |
1886 | ||
1887 | out_mem: | |
1888 | kfree(parm_list); | |
1889 | out: | |
1890 | return res; | |
1891 | } | |
1892 | ||
1893 | static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1894 | u8 prot_info) | |
1895 | { | |
1896 | int res = SNTI_TRANSLATION_SUCCESS; | |
1897 | int nvme_sc; | |
1898 | struct nvme_dev *dev = ns->dev; | |
1899 | dma_addr_t dma_addr; | |
1900 | void *mem; | |
1901 | struct nvme_id_ns *id_ns; | |
1902 | u8 i; | |
1903 | u8 flbas, nlbaf; | |
1904 | u8 selected_lbaf = 0xFF; | |
1905 | u32 cdw10 = 0; | |
1906 | struct nvme_command c; | |
1907 | ||
1908 | /* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */ | |
1909 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1910 | &dma_addr, GFP_KERNEL); | |
1911 | if (mem == NULL) { | |
1912 | res = -ENOMEM; | |
1913 | goto out; | |
1914 | } | |
1915 | /* nvme ns identify */ | |
1916 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1917 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1918 | if (res) | |
1919 | goto out_dma; | |
1920 | if (nvme_sc) { | |
1921 | res = nvme_sc; | |
1922 | goto out_dma; | |
1923 | } | |
1924 | id_ns = mem; | |
1925 | flbas = (id_ns->flbas) & 0x0F; | |
1926 | nlbaf = id_ns->nlbaf; | |
1927 | ||
1928 | for (i = 0; i < nlbaf; i++) { | |
1929 | if (ns->mode_select_block_len == (1 << (id_ns->lbaf[i].ds))) { | |
1930 | selected_lbaf = i; | |
1931 | break; | |
1932 | } | |
1933 | } | |
1934 | if (selected_lbaf > 0x0F) { | |
1935 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1936 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER, | |
1937 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1938 | } | |
8741ee4c | 1939 | if (ns->mode_select_num_blocks != le64_to_cpu(id_ns->ncap)) { |
5d0f6131 VV |
1940 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, |
1941 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER, | |
1942 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1943 | } | |
1944 | ||
1945 | cdw10 |= prot_info << 5; | |
1946 | cdw10 |= selected_lbaf & 0x0F; | |
1947 | memset(&c, 0, sizeof(c)); | |
1948 | c.format.opcode = nvme_admin_format_nvm; | |
8741ee4c | 1949 | c.format.nsid = cpu_to_le32(ns->ns_id); |
5d0f6131 VV |
1950 | c.format.cdw10 = cpu_to_le32(cdw10); |
1951 | ||
1952 | nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); | |
1953 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1954 | if (res) | |
1955 | goto out_dma; | |
1956 | if (nvme_sc) | |
1957 | res = nvme_sc; | |
1958 | ||
1959 | out_dma: | |
1960 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
1961 | dma_addr); | |
1962 | out: | |
1963 | return res; | |
1964 | } | |
1965 | ||
1966 | /* Read/Write Helper Functions */ | |
1967 | ||
1968 | static inline void nvme_trans_get_io_cdb6(u8 *cmd, | |
1969 | struct nvme_trans_io_cdb *cdb_info) | |
1970 | { | |
1971 | cdb_info->fua = 0; | |
1972 | cdb_info->prot_info = 0; | |
1973 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_6_CDB_LBA_OFFSET) & | |
1974 | IO_6_CDB_LBA_MASK; | |
1975 | cdb_info->xfer_len = GET_U8_FROM_CDB(cmd, IO_6_CDB_TX_LEN_OFFSET); | |
1976 | ||
1977 | /* sbc3r27 sec 5.32 - TRANSFER LEN of 0 implies a 256 Block transfer */ | |
1978 | if (cdb_info->xfer_len == 0) | |
1979 | cdb_info->xfer_len = IO_6_DEFAULT_TX_LEN; | |
1980 | } | |
1981 | ||
1982 | static inline void nvme_trans_get_io_cdb10(u8 *cmd, | |
1983 | struct nvme_trans_io_cdb *cdb_info) | |
1984 | { | |
1985 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_10_CDB_FUA_OFFSET) & | |
1986 | IO_CDB_FUA_MASK; | |
1987 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_10_CDB_WP_OFFSET) & | |
1988 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
1989 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_10_CDB_LBA_OFFSET); | |
1990 | cdb_info->xfer_len = GET_U16_FROM_CDB(cmd, IO_10_CDB_TX_LEN_OFFSET); | |
1991 | } | |
1992 | ||
1993 | static inline void nvme_trans_get_io_cdb12(u8 *cmd, | |
1994 | struct nvme_trans_io_cdb *cdb_info) | |
1995 | { | |
1996 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_12_CDB_FUA_OFFSET) & | |
1997 | IO_CDB_FUA_MASK; | |
1998 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_12_CDB_WP_OFFSET) & | |
1999 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
2000 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_12_CDB_LBA_OFFSET); | |
2001 | cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_12_CDB_TX_LEN_OFFSET); | |
2002 | } | |
2003 | ||
2004 | static inline void nvme_trans_get_io_cdb16(u8 *cmd, | |
2005 | struct nvme_trans_io_cdb *cdb_info) | |
2006 | { | |
2007 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_16_CDB_FUA_OFFSET) & | |
2008 | IO_CDB_FUA_MASK; | |
2009 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_16_CDB_WP_OFFSET) & | |
2010 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
2011 | cdb_info->lba = GET_U64_FROM_CDB(cmd, IO_16_CDB_LBA_OFFSET); | |
2012 | cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_16_CDB_TX_LEN_OFFSET); | |
2013 | } | |
2014 | ||
2015 | static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr, | |
2016 | struct nvme_trans_io_cdb *cdb_info, | |
2017 | u32 max_blocks) | |
2018 | { | |
2019 | /* If using iovecs, send one nvme command per vector */ | |
2020 | if (hdr->iovec_count > 0) | |
2021 | return hdr->iovec_count; | |
2022 | else if (cdb_info->xfer_len > max_blocks) | |
2023 | return ((cdb_info->xfer_len - 1) / max_blocks) + 1; | |
2024 | else | |
2025 | return 1; | |
2026 | } | |
2027 | ||
2028 | static u16 nvme_trans_io_get_control(struct nvme_ns *ns, | |
2029 | struct nvme_trans_io_cdb *cdb_info) | |
2030 | { | |
2031 | u16 control = 0; | |
2032 | ||
2033 | /* When Protection information support is added, implement here */ | |
2034 | ||
2035 | if (cdb_info->fua > 0) | |
2036 | control |= NVME_RW_FUA; | |
2037 | ||
2038 | return control; | |
2039 | } | |
2040 | ||
2041 | static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2042 | struct nvme_trans_io_cdb *cdb_info, u8 is_write) | |
2043 | { | |
2044 | int res = SNTI_TRANSLATION_SUCCESS; | |
2045 | int nvme_sc; | |
2046 | struct nvme_dev *dev = ns->dev; | |
5d0f6131 VV |
2047 | u32 num_cmds; |
2048 | struct nvme_iod *iod; | |
2049 | u64 unit_len; | |
2050 | u64 unit_num_blocks; /* Number of blocks to xfer in each nvme cmd */ | |
2051 | u32 retcode; | |
2052 | u32 i = 0; | |
2053 | u64 nvme_offset = 0; | |
8741ee4c | 2054 | void __user *next_mapping_addr; |
5d0f6131 VV |
2055 | struct nvme_command c; |
2056 | u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read); | |
2057 | u16 control; | |
ddcb7762 | 2058 | u32 max_blocks = queue_max_hw_sectors(ns->queue); |
5d0f6131 VV |
2059 | |
2060 | num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks); | |
2061 | ||
2062 | /* | |
2063 | * This loop handles two cases. | |
2064 | * First, when an SGL is used in the form of an iovec list: | |
2065 | * - Use iov_base as the next mapping address for the nvme command_id | |
2066 | * - Use iov_len as the data transfer length for the command. | |
2067 | * Second, when we have a single buffer | |
2068 | * - If larger than max_blocks, split into chunks, offset | |
2069 | * each nvme command accordingly. | |
2070 | */ | |
2071 | for (i = 0; i < num_cmds; i++) { | |
2072 | memset(&c, 0, sizeof(c)); | |
2073 | if (hdr->iovec_count > 0) { | |
8741ee4c VV |
2074 | struct sg_iovec sgl; |
2075 | ||
2076 | retcode = copy_from_user(&sgl, hdr->dxferp + | |
2077 | i * sizeof(struct sg_iovec), | |
2078 | sizeof(struct sg_iovec)); | |
2079 | if (retcode) | |
2080 | return -EFAULT; | |
2081 | unit_len = sgl.iov_len; | |
5d0f6131 | 2082 | unit_num_blocks = unit_len >> ns->lba_shift; |
8741ee4c | 2083 | next_mapping_addr = sgl.iov_base; |
5d0f6131 VV |
2084 | } else { |
2085 | unit_num_blocks = min((u64)max_blocks, | |
2086 | (cdb_info->xfer_len - nvme_offset)); | |
2087 | unit_len = unit_num_blocks << ns->lba_shift; | |
2088 | next_mapping_addr = hdr->dxferp + | |
2089 | ((1 << ns->lba_shift) * nvme_offset); | |
2090 | } | |
2091 | ||
2092 | c.rw.opcode = opcode; | |
2093 | c.rw.nsid = cpu_to_le32(ns->ns_id); | |
2094 | c.rw.slba = cpu_to_le64(cdb_info->lba + nvme_offset); | |
2095 | c.rw.length = cpu_to_le16(unit_num_blocks - 1); | |
2096 | control = nvme_trans_io_get_control(ns, cdb_info); | |
2097 | c.rw.control = cpu_to_le16(control); | |
2098 | ||
2099 | iod = nvme_map_user_pages(dev, | |
2100 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2101 | (unsigned long)next_mapping_addr, unit_len); | |
2102 | if (IS_ERR(iod)) { | |
2103 | res = PTR_ERR(iod); | |
2104 | goto out; | |
2105 | } | |
edd10d33 | 2106 | retcode = nvme_setup_prps(dev, iod, unit_len, GFP_KERNEL); |
5d0f6131 VV |
2107 | if (retcode != unit_len) { |
2108 | nvme_unmap_user_pages(dev, | |
2109 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2110 | iod); | |
2111 | nvme_free_iod(dev, iod); | |
2112 | res = -ENOMEM; | |
2113 | goto out; | |
2114 | } | |
edd10d33 KB |
2115 | c.rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg)); |
2116 | c.rw.prp2 = cpu_to_le64(iod->first_dma); | |
5d0f6131 VV |
2117 | |
2118 | nvme_offset += unit_num_blocks; | |
2119 | ||
a4aea562 | 2120 | nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL); |
5d0f6131 VV |
2121 | if (nvme_sc != NVME_SC_SUCCESS) { |
2122 | nvme_unmap_user_pages(dev, | |
2123 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2124 | iod); | |
2125 | nvme_free_iod(dev, iod); | |
2126 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2127 | goto out; | |
2128 | } | |
2129 | nvme_unmap_user_pages(dev, | |
2130 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2131 | iod); | |
2132 | nvme_free_iod(dev, iod); | |
2133 | } | |
2134 | res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS); | |
2135 | ||
2136 | out: | |
2137 | return res; | |
2138 | } | |
2139 | ||
2140 | ||
2141 | /* SCSI Command Translation Functions */ | |
2142 | ||
2143 | static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, | |
2144 | u8 *cmd) | |
2145 | { | |
2146 | int res = SNTI_TRANSLATION_SUCCESS; | |
2147 | struct nvme_trans_io_cdb cdb_info; | |
2148 | u8 opcode = cmd[0]; | |
2149 | u64 xfer_bytes; | |
2150 | u64 sum_iov_len = 0; | |
8741ee4c | 2151 | struct sg_iovec sgl; |
5d0f6131 | 2152 | int i; |
8741ee4c | 2153 | size_t not_copied; |
5d0f6131 VV |
2154 | |
2155 | /* Extract Fields from CDB */ | |
2156 | switch (opcode) { | |
2157 | case WRITE_6: | |
2158 | case READ_6: | |
2159 | nvme_trans_get_io_cdb6(cmd, &cdb_info); | |
2160 | break; | |
2161 | case WRITE_10: | |
2162 | case READ_10: | |
2163 | nvme_trans_get_io_cdb10(cmd, &cdb_info); | |
2164 | break; | |
2165 | case WRITE_12: | |
2166 | case READ_12: | |
2167 | nvme_trans_get_io_cdb12(cmd, &cdb_info); | |
2168 | break; | |
2169 | case WRITE_16: | |
2170 | case READ_16: | |
2171 | nvme_trans_get_io_cdb16(cmd, &cdb_info); | |
2172 | break; | |
2173 | default: | |
2174 | /* Will never really reach here */ | |
2175 | res = SNTI_INTERNAL_ERROR; | |
2176 | goto out; | |
2177 | } | |
2178 | ||
2179 | /* Calculate total length of transfer (in bytes) */ | |
2180 | if (hdr->iovec_count > 0) { | |
5d0f6131 | 2181 | for (i = 0; i < hdr->iovec_count; i++) { |
8741ee4c VV |
2182 | not_copied = copy_from_user(&sgl, hdr->dxferp + |
2183 | i * sizeof(struct sg_iovec), | |
2184 | sizeof(struct sg_iovec)); | |
2185 | if (not_copied) | |
2186 | return -EFAULT; | |
2187 | sum_iov_len += sgl.iov_len; | |
5d0f6131 | 2188 | /* IO vector sizes should be multiples of block size */ |
8741ee4c | 2189 | if (sgl.iov_len % (1 << ns->lba_shift) != 0) { |
5d0f6131 VV |
2190 | res = nvme_trans_completion(hdr, |
2191 | SAM_STAT_CHECK_CONDITION, | |
2192 | ILLEGAL_REQUEST, | |
2193 | SCSI_ASC_INVALID_PARAMETER, | |
2194 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2195 | goto out; | |
2196 | } | |
2197 | } | |
2198 | } else { | |
2199 | sum_iov_len = hdr->dxfer_len; | |
2200 | } | |
2201 | ||
2202 | /* As Per sg ioctl howto, if the lengths differ, use the lower one */ | |
2203 | xfer_bytes = min(((u64)hdr->dxfer_len), sum_iov_len); | |
2204 | ||
2205 | /* If block count and actual data buffer size dont match, error out */ | |
2206 | if (xfer_bytes != (cdb_info.xfer_len << ns->lba_shift)) { | |
2207 | res = -EINVAL; | |
2208 | goto out; | |
2209 | } | |
2210 | ||
2211 | /* Check for 0 length transfer - it is not illegal */ | |
2212 | if (cdb_info.xfer_len == 0) | |
2213 | goto out; | |
2214 | ||
2215 | /* Send NVMe IO Command(s) */ | |
2216 | res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write); | |
2217 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2218 | goto out; | |
2219 | ||
2220 | out: | |
2221 | return res; | |
2222 | } | |
2223 | ||
2224 | static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2225 | u8 *cmd) | |
2226 | { | |
2227 | int res = SNTI_TRANSLATION_SUCCESS; | |
2228 | u8 evpd; | |
2229 | u8 page_code; | |
2230 | int alloc_len; | |
2231 | u8 *inq_response; | |
2232 | ||
2233 | evpd = GET_INQ_EVPD_BIT(cmd); | |
2234 | page_code = GET_INQ_PAGE_CODE(cmd); | |
2235 | alloc_len = GET_INQ_ALLOC_LENGTH(cmd); | |
2236 | ||
4f1982b4 | 2237 | inq_response = kmalloc(alloc_len, GFP_KERNEL); |
5d0f6131 VV |
2238 | if (inq_response == NULL) { |
2239 | res = -ENOMEM; | |
2240 | goto out_mem; | |
2241 | } | |
2242 | ||
2243 | if (evpd == 0) { | |
2244 | if (page_code == INQ_STANDARD_INQUIRY_PAGE) { | |
2245 | res = nvme_trans_standard_inquiry_page(ns, hdr, | |
2246 | inq_response, alloc_len); | |
2247 | } else { | |
2248 | res = nvme_trans_completion(hdr, | |
2249 | SAM_STAT_CHECK_CONDITION, | |
2250 | ILLEGAL_REQUEST, | |
2251 | SCSI_ASC_INVALID_CDB, | |
2252 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2253 | } | |
2254 | } else { | |
2255 | switch (page_code) { | |
2256 | case VPD_SUPPORTED_PAGES: | |
2257 | res = nvme_trans_supported_vpd_pages(ns, hdr, | |
2258 | inq_response, alloc_len); | |
2259 | break; | |
2260 | case VPD_SERIAL_NUMBER: | |
2261 | res = nvme_trans_unit_serial_page(ns, hdr, inq_response, | |
2262 | alloc_len); | |
2263 | break; | |
2264 | case VPD_DEVICE_IDENTIFIERS: | |
2265 | res = nvme_trans_device_id_page(ns, hdr, inq_response, | |
2266 | alloc_len); | |
2267 | break; | |
2268 | case VPD_EXTENDED_INQUIRY: | |
2269 | res = nvme_trans_ext_inq_page(ns, hdr, alloc_len); | |
2270 | break; | |
2271 | case VPD_BLOCK_DEV_CHARACTERISTICS: | |
2272 | res = nvme_trans_bdev_char_page(ns, hdr, alloc_len); | |
2273 | break; | |
2274 | default: | |
2275 | res = nvme_trans_completion(hdr, | |
2276 | SAM_STAT_CHECK_CONDITION, | |
2277 | ILLEGAL_REQUEST, | |
2278 | SCSI_ASC_INVALID_CDB, | |
2279 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2280 | break; | |
2281 | } | |
2282 | } | |
2283 | kfree(inq_response); | |
2284 | out_mem: | |
2285 | return res; | |
2286 | } | |
2287 | ||
2288 | static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2289 | u8 *cmd) | |
2290 | { | |
2291 | int res = SNTI_TRANSLATION_SUCCESS; | |
2292 | u16 alloc_len; | |
2293 | u8 sp; | |
2294 | u8 pc; | |
2295 | u8 page_code; | |
2296 | ||
2297 | sp = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_SP_OFFSET); | |
2298 | if (sp != LOG_SENSE_CDB_SP_NOT_ENABLED) { | |
2299 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2300 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2301 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2302 | goto out; | |
2303 | } | |
2304 | pc = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_PC_OFFSET); | |
2305 | page_code = pc & LOG_SENSE_CDB_PAGE_CODE_MASK; | |
2306 | pc = (pc & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT; | |
2307 | if (pc != LOG_SENSE_CDB_PC_CUMULATIVE_VALUES) { | |
2308 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2309 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2310 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2311 | goto out; | |
2312 | } | |
2313 | alloc_len = GET_U16_FROM_CDB(cmd, LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET); | |
2314 | switch (page_code) { | |
2315 | case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE: | |
2316 | res = nvme_trans_log_supp_pages(ns, hdr, alloc_len); | |
2317 | break; | |
2318 | case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE: | |
2319 | res = nvme_trans_log_info_exceptions(ns, hdr, alloc_len); | |
2320 | break; | |
2321 | case LOG_PAGE_TEMPERATURE_PAGE: | |
2322 | res = nvme_trans_log_temperature(ns, hdr, alloc_len); | |
2323 | break; | |
2324 | default: | |
2325 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2326 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2327 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2328 | break; | |
2329 | } | |
2330 | ||
2331 | out: | |
2332 | return res; | |
2333 | } | |
2334 | ||
2335 | static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2336 | u8 *cmd) | |
2337 | { | |
2338 | int res = SNTI_TRANSLATION_SUCCESS; | |
2339 | u8 cdb10 = 0; | |
2340 | u16 parm_list_len; | |
2341 | u8 page_format; | |
2342 | u8 save_pages; | |
2343 | ||
2344 | page_format = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_PAGE_FORMAT_OFFSET); | |
2345 | page_format &= MODE_SELECT_CDB_PAGE_FORMAT_MASK; | |
2346 | ||
2347 | save_pages = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_SAVE_PAGES_OFFSET); | |
2348 | save_pages &= MODE_SELECT_CDB_SAVE_PAGES_MASK; | |
2349 | ||
2350 | if (GET_OPCODE(cmd) == MODE_SELECT) { | |
2351 | parm_list_len = GET_U8_FROM_CDB(cmd, | |
2352 | MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET); | |
2353 | } else { | |
2354 | parm_list_len = GET_U16_FROM_CDB(cmd, | |
2355 | MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET); | |
2356 | cdb10 = 1; | |
2357 | } | |
2358 | ||
2359 | if (parm_list_len != 0) { | |
2360 | /* | |
2361 | * According to SPC-4 r24, a paramter list length field of 0 | |
2362 | * shall not be considered an error | |
2363 | */ | |
2364 | res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len, | |
2365 | page_format, save_pages, cdb10); | |
2366 | } | |
2367 | ||
2368 | return res; | |
2369 | } | |
2370 | ||
2371 | static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2372 | u8 *cmd) | |
2373 | { | |
2374 | int res = SNTI_TRANSLATION_SUCCESS; | |
2375 | u16 alloc_len; | |
2376 | u8 cdb10 = 0; | |
2377 | u8 page_code; | |
2378 | u8 pc; | |
2379 | ||
2380 | if (GET_OPCODE(cmd) == MODE_SENSE) { | |
2381 | alloc_len = GET_U8_FROM_CDB(cmd, MODE_SENSE6_ALLOC_LEN_OFFSET); | |
2382 | } else { | |
2383 | alloc_len = GET_U16_FROM_CDB(cmd, | |
2384 | MODE_SENSE10_ALLOC_LEN_OFFSET); | |
2385 | cdb10 = 1; | |
2386 | } | |
2387 | ||
2388 | pc = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CONTROL_OFFSET) & | |
2389 | MODE_SENSE_PAGE_CONTROL_MASK; | |
2390 | if (pc != MODE_SENSE_PC_CURRENT_VALUES) { | |
2391 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2392 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2393 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2394 | goto out; | |
2395 | } | |
2396 | ||
2397 | page_code = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CODE_OFFSET) & | |
2398 | MODE_SENSE_PAGE_CODE_MASK; | |
2399 | switch (page_code) { | |
2400 | case MODE_PAGE_CACHING: | |
2401 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2402 | cdb10, | |
2403 | &nvme_trans_fill_caching_page, | |
2404 | MODE_PAGE_CACHING_LEN); | |
2405 | break; | |
2406 | case MODE_PAGE_CONTROL: | |
2407 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2408 | cdb10, | |
2409 | &nvme_trans_fill_control_page, | |
2410 | MODE_PAGE_CONTROL_LEN); | |
2411 | break; | |
2412 | case MODE_PAGE_POWER_CONDITION: | |
2413 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2414 | cdb10, | |
2415 | &nvme_trans_fill_pow_cnd_page, | |
2416 | MODE_PAGE_POW_CND_LEN); | |
2417 | break; | |
2418 | case MODE_PAGE_INFO_EXCEP: | |
2419 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2420 | cdb10, | |
2421 | &nvme_trans_fill_inf_exc_page, | |
2422 | MODE_PAGE_INF_EXC_LEN); | |
2423 | break; | |
2424 | case MODE_PAGE_RETURN_ALL: | |
2425 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2426 | cdb10, | |
2427 | &nvme_trans_fill_all_pages, | |
2428 | MODE_PAGE_ALL_LEN); | |
2429 | break; | |
2430 | default: | |
2431 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2432 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2433 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2434 | break; | |
2435 | } | |
2436 | ||
2437 | out: | |
2438 | return res; | |
2439 | } | |
2440 | ||
2441 | static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2442 | u8 *cmd) | |
2443 | { | |
2444 | int res = SNTI_TRANSLATION_SUCCESS; | |
2445 | int nvme_sc; | |
2446 | u32 alloc_len = READ_CAP_10_RESP_SIZE; | |
2447 | u32 resp_size = READ_CAP_10_RESP_SIZE; | |
2448 | u32 xfer_len; | |
2449 | u8 cdb16; | |
2450 | struct nvme_dev *dev = ns->dev; | |
2451 | dma_addr_t dma_addr; | |
2452 | void *mem; | |
2453 | struct nvme_id_ns *id_ns; | |
2454 | u8 *response; | |
2455 | ||
2456 | cdb16 = IS_READ_CAP_16(cmd); | |
2457 | if (cdb16) { | |
2458 | alloc_len = GET_READ_CAP_16_ALLOC_LENGTH(cmd); | |
2459 | resp_size = READ_CAP_16_RESP_SIZE; | |
2460 | } | |
2461 | ||
2462 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
2463 | &dma_addr, GFP_KERNEL); | |
2464 | if (mem == NULL) { | |
2465 | res = -ENOMEM; | |
2466 | goto out; | |
2467 | } | |
2468 | /* nvme ns identify */ | |
2469 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
2470 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2471 | if (res) | |
2472 | goto out_dma; | |
2473 | if (nvme_sc) { | |
2474 | res = nvme_sc; | |
2475 | goto out_dma; | |
2476 | } | |
2477 | id_ns = mem; | |
2478 | ||
03ea83e9 | 2479 | response = kzalloc(resp_size, GFP_KERNEL); |
5d0f6131 VV |
2480 | if (response == NULL) { |
2481 | res = -ENOMEM; | |
2482 | goto out_dma; | |
2483 | } | |
5d0f6131 VV |
2484 | nvme_trans_fill_read_cap(response, id_ns, cdb16); |
2485 | ||
2486 | xfer_len = min(alloc_len, resp_size); | |
2487 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2488 | ||
2489 | kfree(response); | |
2490 | out_dma: | |
2491 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
2492 | dma_addr); | |
2493 | out: | |
2494 | return res; | |
2495 | } | |
2496 | ||
2497 | static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2498 | u8 *cmd) | |
2499 | { | |
2500 | int res = SNTI_TRANSLATION_SUCCESS; | |
2501 | int nvme_sc; | |
2502 | u32 alloc_len, xfer_len, resp_size; | |
2503 | u8 select_report; | |
2504 | u8 *response; | |
2505 | struct nvme_dev *dev = ns->dev; | |
2506 | dma_addr_t dma_addr; | |
2507 | void *mem; | |
2508 | struct nvme_id_ctrl *id_ctrl; | |
2509 | u32 ll_length, lun_id; | |
2510 | u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET; | |
8741ee4c | 2511 | __be32 tmp_len; |
5d0f6131 VV |
2512 | |
2513 | alloc_len = GET_REPORT_LUNS_ALLOC_LENGTH(cmd); | |
2514 | select_report = GET_U8_FROM_CDB(cmd, REPORT_LUNS_SR_OFFSET); | |
2515 | ||
2516 | if ((select_report != ALL_LUNS_RETURNED) && | |
2517 | (select_report != ALL_WELL_KNOWN_LUNS_RETURNED) && | |
2518 | (select_report != RESTRICTED_LUNS_RETURNED)) { | |
2519 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2520 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2521 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2522 | goto out; | |
2523 | } else { | |
2524 | /* NVMe Controller Identify */ | |
2525 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
2526 | sizeof(struct nvme_id_ctrl), | |
2527 | &dma_addr, GFP_KERNEL); | |
2528 | if (mem == NULL) { | |
2529 | res = -ENOMEM; | |
2530 | goto out; | |
2531 | } | |
2532 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
2533 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2534 | if (res) | |
2535 | goto out_dma; | |
2536 | if (nvme_sc) { | |
2537 | res = nvme_sc; | |
2538 | goto out_dma; | |
2539 | } | |
2540 | id_ctrl = mem; | |
8741ee4c | 2541 | ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE; |
5d0f6131 VV |
2542 | resp_size = ll_length + LUN_DATA_HEADER_SIZE; |
2543 | ||
2544 | if (alloc_len < resp_size) { | |
2545 | res = nvme_trans_completion(hdr, | |
2546 | SAM_STAT_CHECK_CONDITION, | |
2547 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2548 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2549 | goto out_dma; | |
2550 | } | |
2551 | ||
03ea83e9 | 2552 | response = kzalloc(resp_size, GFP_KERNEL); |
5d0f6131 VV |
2553 | if (response == NULL) { |
2554 | res = -ENOMEM; | |
2555 | goto out_dma; | |
2556 | } | |
5d0f6131 VV |
2557 | |
2558 | /* The first LUN ID will always be 0 per the SAM spec */ | |
8741ee4c | 2559 | for (lun_id = 0; lun_id < le32_to_cpu(id_ctrl->nn); lun_id++) { |
5d0f6131 VV |
2560 | /* |
2561 | * Set the LUN Id and then increment to the next LUN | |
2562 | * location in the parameter data. | |
2563 | */ | |
8741ee4c | 2564 | __be64 tmp_id = cpu_to_be64(lun_id); |
5d0f6131 VV |
2565 | memcpy(&response[lun_id_offset], &tmp_id, sizeof(u64)); |
2566 | lun_id_offset += LUN_ENTRY_SIZE; | |
2567 | } | |
2568 | tmp_len = cpu_to_be32(ll_length); | |
2569 | memcpy(response, &tmp_len, sizeof(u32)); | |
2570 | } | |
2571 | ||
2572 | xfer_len = min(alloc_len, resp_size); | |
2573 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2574 | ||
2575 | kfree(response); | |
2576 | out_dma: | |
2577 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, | |
2578 | dma_addr); | |
2579 | out: | |
2580 | return res; | |
2581 | } | |
2582 | ||
2583 | static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2584 | u8 *cmd) | |
2585 | { | |
2586 | int res = SNTI_TRANSLATION_SUCCESS; | |
2587 | u8 alloc_len, xfer_len, resp_size; | |
2588 | u8 desc_format; | |
2589 | u8 *response; | |
2590 | ||
2591 | alloc_len = GET_REQUEST_SENSE_ALLOC_LENGTH(cmd); | |
2592 | desc_format = GET_U8_FROM_CDB(cmd, REQUEST_SENSE_DESC_OFFSET); | |
2593 | desc_format &= REQUEST_SENSE_DESC_MASK; | |
2594 | ||
2595 | resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) : | |
2596 | (FIXED_FMT_SENSE_DATA_SIZE)); | |
03ea83e9 | 2597 | response = kzalloc(resp_size, GFP_KERNEL); |
5d0f6131 VV |
2598 | if (response == NULL) { |
2599 | res = -ENOMEM; | |
2600 | goto out; | |
2601 | } | |
5d0f6131 VV |
2602 | |
2603 | if (desc_format == DESCRIPTOR_FORMAT_SENSE_DATA_TYPE) { | |
2604 | /* Descriptor Format Sense Data */ | |
2605 | response[0] = DESC_FORMAT_SENSE_DATA; | |
2606 | response[1] = NO_SENSE; | |
2607 | /* TODO How is LOW POWER CONDITION ON handled? (byte 2) */ | |
2608 | response[2] = SCSI_ASC_NO_SENSE; | |
2609 | response[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
2610 | /* SDAT_OVFL = 0 | Additional Sense Length = 0 */ | |
2611 | } else { | |
2612 | /* Fixed Format Sense Data */ | |
2613 | response[0] = FIXED_SENSE_DATA; | |
2614 | /* Byte 1 = Obsolete */ | |
2615 | response[2] = NO_SENSE; /* FM, EOM, ILI, SDAT_OVFL = 0 */ | |
2616 | /* Bytes 3-6 - Information - set to zero */ | |
2617 | response[7] = FIXED_SENSE_DATA_ADD_LENGTH; | |
2618 | /* Bytes 8-11 - Cmd Specific Information - set to zero */ | |
2619 | response[12] = SCSI_ASC_NO_SENSE; | |
2620 | response[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
2621 | /* Byte 14 = Field Replaceable Unit Code = 0 */ | |
2622 | /* Bytes 15-17 - SKSV=0; Sense Key Specific = 0 */ | |
2623 | } | |
2624 | ||
2625 | xfer_len = min(alloc_len, resp_size); | |
2626 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2627 | ||
2628 | kfree(response); | |
2629 | out: | |
2630 | return res; | |
2631 | } | |
2632 | ||
2633 | static int nvme_trans_security_protocol(struct nvme_ns *ns, | |
2634 | struct sg_io_hdr *hdr, | |
2635 | u8 *cmd) | |
2636 | { | |
2637 | return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2638 | ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND, | |
2639 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2640 | } | |
2641 | ||
2642 | static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2643 | u8 *cmd) | |
2644 | { | |
2645 | int res = SNTI_TRANSLATION_SUCCESS; | |
2646 | int nvme_sc; | |
14385de1 | 2647 | struct nvme_command c; |
5d0f6131 VV |
2648 | u8 immed, pcmod, pc, no_flush, start; |
2649 | ||
2650 | immed = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_IMMED_OFFSET); | |
2651 | pcmod = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET); | |
2652 | pc = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_OFFSET); | |
2653 | no_flush = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_NO_FLUSH_OFFSET); | |
2654 | start = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_START_OFFSET); | |
2655 | ||
2656 | immed &= START_STOP_UNIT_CDB_IMMED_MASK; | |
2657 | pcmod &= START_STOP_UNIT_CDB_POWER_COND_MOD_MASK; | |
2658 | pc = (pc & START_STOP_UNIT_CDB_POWER_COND_MASK) >> NIBBLE_SHIFT; | |
2659 | no_flush &= START_STOP_UNIT_CDB_NO_FLUSH_MASK; | |
2660 | start &= START_STOP_UNIT_CDB_START_MASK; | |
2661 | ||
2662 | if (immed != 0) { | |
2663 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2664 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2665 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2666 | } else { | |
2667 | if (no_flush == 0) { | |
2668 | /* Issue NVME FLUSH command prior to START STOP UNIT */ | |
14385de1 KB |
2669 | memset(&c, 0, sizeof(c)); |
2670 | c.common.opcode = nvme_cmd_flush; | |
2671 | c.common.nsid = cpu_to_le32(ns->ns_id); | |
2672 | ||
a4aea562 | 2673 | nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL); |
5d0f6131 VV |
2674 | res = nvme_trans_status_code(hdr, nvme_sc); |
2675 | if (res) | |
2676 | goto out; | |
2677 | if (nvme_sc) { | |
2678 | res = nvme_sc; | |
2679 | goto out; | |
2680 | } | |
2681 | } | |
2682 | /* Setup the expected power state transition */ | |
2683 | res = nvme_trans_power_state(ns, hdr, pc, pcmod, start); | |
2684 | } | |
2685 | ||
2686 | out: | |
2687 | return res; | |
2688 | } | |
2689 | ||
2690 | static int nvme_trans_synchronize_cache(struct nvme_ns *ns, | |
2691 | struct sg_io_hdr *hdr, u8 *cmd) | |
2692 | { | |
2693 | int res = SNTI_TRANSLATION_SUCCESS; | |
2694 | int nvme_sc; | |
14385de1 | 2695 | struct nvme_command c; |
14385de1 KB |
2696 | |
2697 | memset(&c, 0, sizeof(c)); | |
2698 | c.common.opcode = nvme_cmd_flush; | |
2699 | c.common.nsid = cpu_to_le32(ns->ns_id); | |
2700 | ||
a4aea562 | 2701 | nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL); |
14385de1 | 2702 | |
5d0f6131 VV |
2703 | res = nvme_trans_status_code(hdr, nvme_sc); |
2704 | if (res) | |
2705 | goto out; | |
2706 | if (nvme_sc) | |
2707 | res = nvme_sc; | |
2708 | ||
2709 | out: | |
2710 | return res; | |
2711 | } | |
2712 | ||
2713 | static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2714 | u8 *cmd) | |
2715 | { | |
2716 | int res = SNTI_TRANSLATION_SUCCESS; | |
2717 | u8 parm_hdr_len = 0; | |
2718 | u8 nvme_pf_code = 0; | |
2719 | u8 format_prot_info, long_list, format_data; | |
2720 | ||
2721 | format_prot_info = GET_U8_FROM_CDB(cmd, | |
2722 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET); | |
2723 | long_list = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_LONG_LIST_OFFSET); | |
2724 | format_data = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET); | |
2725 | ||
2726 | format_prot_info = (format_prot_info & | |
2727 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK) >> | |
2728 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT; | |
2729 | long_list &= FORMAT_UNIT_CDB_LONG_LIST_MASK; | |
2730 | format_data &= FORMAT_UNIT_CDB_FORMAT_DATA_MASK; | |
2731 | ||
2732 | if (format_data != 0) { | |
2733 | if (format_prot_info != 0) { | |
2734 | if (long_list == 0) | |
2735 | parm_hdr_len = FORMAT_UNIT_SHORT_PARM_LIST_LEN; | |
2736 | else | |
2737 | parm_hdr_len = FORMAT_UNIT_LONG_PARM_LIST_LEN; | |
2738 | } | |
2739 | } else if (format_data == 0 && format_prot_info != 0) { | |
2740 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2741 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2742 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2743 | goto out; | |
2744 | } | |
2745 | ||
2746 | /* Get parm header from data-in/out buffer */ | |
2747 | /* | |
2748 | * According to the translation spec, the only fields in the parameter | |
2749 | * list we are concerned with are in the header. So allocate only that. | |
2750 | */ | |
2751 | if (parm_hdr_len > 0) { | |
2752 | res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len, | |
2753 | format_prot_info, &nvme_pf_code); | |
2754 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2755 | goto out; | |
2756 | } | |
2757 | ||
2758 | /* Attempt to activate any previously downloaded firmware image */ | |
2759 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, 0, 0, 0); | |
2760 | ||
2761 | /* Determine Block size and count and send format command */ | |
2762 | res = nvme_trans_fmt_set_blk_size_count(ns, hdr); | |
2763 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2764 | goto out; | |
2765 | ||
2766 | res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code); | |
2767 | ||
2768 | out: | |
2769 | return res; | |
2770 | } | |
2771 | ||
2772 | static int nvme_trans_test_unit_ready(struct nvme_ns *ns, | |
2773 | struct sg_io_hdr *hdr, | |
2774 | u8 *cmd) | |
2775 | { | |
2776 | int res = SNTI_TRANSLATION_SUCCESS; | |
2777 | struct nvme_dev *dev = ns->dev; | |
2778 | ||
2779 | if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY)) | |
2780 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2781 | NOT_READY, SCSI_ASC_LUN_NOT_READY, | |
2782 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2783 | else | |
2784 | res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0); | |
2785 | ||
2786 | return res; | |
2787 | } | |
2788 | ||
2789 | static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2790 | u8 *cmd) | |
2791 | { | |
2792 | int res = SNTI_TRANSLATION_SUCCESS; | |
2793 | u32 buffer_offset, parm_list_length; | |
2794 | u8 buffer_id, mode; | |
2795 | ||
2796 | parm_list_length = | |
2797 | GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET); | |
2798 | if (parm_list_length % BYTES_TO_DWORDS != 0) { | |
2799 | /* NVMe expects Firmware file to be a whole number of DWORDS */ | |
2800 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2801 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2802 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2803 | goto out; | |
2804 | } | |
2805 | buffer_id = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_ID_OFFSET); | |
2806 | if (buffer_id > NVME_MAX_FIRMWARE_SLOT) { | |
2807 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2808 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2809 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2810 | goto out; | |
2811 | } | |
2812 | mode = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_MODE_OFFSET) & | |
2813 | WRITE_BUFFER_CDB_MODE_MASK; | |
2814 | buffer_offset = | |
2815 | GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET); | |
2816 | ||
2817 | switch (mode) { | |
2818 | case DOWNLOAD_SAVE_ACTIVATE: | |
2819 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, | |
2820 | parm_list_length, buffer_offset, | |
2821 | buffer_id); | |
2822 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2823 | goto out; | |
2824 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, | |
2825 | parm_list_length, buffer_offset, | |
2826 | buffer_id); | |
2827 | break; | |
2828 | case DOWNLOAD_SAVE_DEFER_ACTIVATE: | |
2829 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, | |
2830 | parm_list_length, buffer_offset, | |
2831 | buffer_id); | |
2832 | break; | |
2833 | case ACTIVATE_DEFERRED_MICROCODE: | |
2834 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, | |
2835 | parm_list_length, buffer_offset, | |
2836 | buffer_id); | |
2837 | break; | |
2838 | default: | |
2839 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2840 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2841 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2842 | break; | |
2843 | } | |
2844 | ||
2845 | out: | |
2846 | return res; | |
2847 | } | |
2848 | ||
ec503733 KB |
2849 | struct scsi_unmap_blk_desc { |
2850 | __be64 slba; | |
2851 | __be32 nlb; | |
2852 | u32 resv; | |
2853 | }; | |
2854 | ||
2855 | struct scsi_unmap_parm_list { | |
2856 | __be16 unmap_data_len; | |
2857 | __be16 unmap_blk_desc_data_len; | |
2858 | u32 resv; | |
2859 | struct scsi_unmap_blk_desc desc[0]; | |
2860 | }; | |
2861 | ||
2862 | static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2863 | u8 *cmd) | |
2864 | { | |
2865 | struct nvme_dev *dev = ns->dev; | |
2866 | struct scsi_unmap_parm_list *plist; | |
2867 | struct nvme_dsm_range *range; | |
ec503733 KB |
2868 | struct nvme_command c; |
2869 | int i, nvme_sc, res = -ENOMEM; | |
2870 | u16 ndesc, list_len; | |
2871 | dma_addr_t dma_addr; | |
2872 | ||
2873 | list_len = GET_U16_FROM_CDB(cmd, UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET); | |
2874 | if (!list_len) | |
2875 | return -EINVAL; | |
2876 | ||
2877 | plist = kmalloc(list_len, GFP_KERNEL); | |
2878 | if (!plist) | |
2879 | return -ENOMEM; | |
2880 | ||
2881 | res = nvme_trans_copy_from_user(hdr, plist, list_len); | |
2882 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2883 | goto out; | |
2884 | ||
2885 | ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4; | |
2886 | if (!ndesc || ndesc > 256) { | |
2887 | res = -EINVAL; | |
2888 | goto out; | |
2889 | } | |
2890 | ||
2891 | range = dma_alloc_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range), | |
2892 | &dma_addr, GFP_KERNEL); | |
2893 | if (!range) | |
2894 | goto out; | |
2895 | ||
2896 | for (i = 0; i < ndesc; i++) { | |
2897 | range[i].nlb = cpu_to_le32(be32_to_cpu(plist->desc[i].nlb)); | |
2898 | range[i].slba = cpu_to_le64(be64_to_cpu(plist->desc[i].slba)); | |
2899 | range[i].cattr = 0; | |
2900 | } | |
2901 | ||
2902 | memset(&c, 0, sizeof(c)); | |
2903 | c.dsm.opcode = nvme_cmd_dsm; | |
2904 | c.dsm.nsid = cpu_to_le32(ns->ns_id); | |
2905 | c.dsm.prp1 = cpu_to_le64(dma_addr); | |
2906 | c.dsm.nr = cpu_to_le32(ndesc - 1); | |
2907 | c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD); | |
2908 | ||
a4aea562 | 2909 | nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL); |
ec503733 KB |
2910 | res = nvme_trans_status_code(hdr, nvme_sc); |
2911 | ||
2912 | dma_free_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range), | |
2913 | range, dma_addr); | |
2914 | out: | |
2915 | kfree(plist); | |
2916 | return res; | |
2917 | } | |
2918 | ||
5d0f6131 VV |
2919 | static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr) |
2920 | { | |
2921 | u8 cmd[BLK_MAX_CDB]; | |
2922 | int retcode; | |
2923 | unsigned int opcode; | |
2924 | ||
2925 | if (hdr->cmdp == NULL) | |
2926 | return -EMSGSIZE; | |
2927 | if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len)) | |
2928 | return -EFAULT; | |
2929 | ||
695a4fe7 KB |
2930 | /* |
2931 | * Prime the hdr with good status for scsi commands that don't require | |
2932 | * an nvme command for translation. | |
2933 | */ | |
2934 | retcode = nvme_trans_status_code(hdr, NVME_SC_SUCCESS); | |
2935 | if (retcode) | |
2936 | return retcode; | |
2937 | ||
5d0f6131 VV |
2938 | opcode = cmd[0]; |
2939 | ||
2940 | switch (opcode) { | |
2941 | case READ_6: | |
2942 | case READ_10: | |
2943 | case READ_12: | |
2944 | case READ_16: | |
2945 | retcode = nvme_trans_io(ns, hdr, 0, cmd); | |
2946 | break; | |
2947 | case WRITE_6: | |
2948 | case WRITE_10: | |
2949 | case WRITE_12: | |
2950 | case WRITE_16: | |
2951 | retcode = nvme_trans_io(ns, hdr, 1, cmd); | |
2952 | break; | |
2953 | case INQUIRY: | |
2954 | retcode = nvme_trans_inquiry(ns, hdr, cmd); | |
2955 | break; | |
2956 | case LOG_SENSE: | |
2957 | retcode = nvme_trans_log_sense(ns, hdr, cmd); | |
2958 | break; | |
2959 | case MODE_SELECT: | |
2960 | case MODE_SELECT_10: | |
2961 | retcode = nvme_trans_mode_select(ns, hdr, cmd); | |
2962 | break; | |
2963 | case MODE_SENSE: | |
2964 | case MODE_SENSE_10: | |
2965 | retcode = nvme_trans_mode_sense(ns, hdr, cmd); | |
2966 | break; | |
2967 | case READ_CAPACITY: | |
2968 | retcode = nvme_trans_read_capacity(ns, hdr, cmd); | |
2969 | break; | |
eb846d9f | 2970 | case SERVICE_ACTION_IN_16: |
5d0f6131 VV |
2971 | if (IS_READ_CAP_16(cmd)) |
2972 | retcode = nvme_trans_read_capacity(ns, hdr, cmd); | |
2973 | else | |
2974 | goto out; | |
2975 | break; | |
2976 | case REPORT_LUNS: | |
2977 | retcode = nvme_trans_report_luns(ns, hdr, cmd); | |
2978 | break; | |
2979 | case REQUEST_SENSE: | |
2980 | retcode = nvme_trans_request_sense(ns, hdr, cmd); | |
2981 | break; | |
2982 | case SECURITY_PROTOCOL_IN: | |
2983 | case SECURITY_PROTOCOL_OUT: | |
2984 | retcode = nvme_trans_security_protocol(ns, hdr, cmd); | |
2985 | break; | |
2986 | case START_STOP: | |
2987 | retcode = nvme_trans_start_stop(ns, hdr, cmd); | |
2988 | break; | |
2989 | case SYNCHRONIZE_CACHE: | |
2990 | retcode = nvme_trans_synchronize_cache(ns, hdr, cmd); | |
2991 | break; | |
2992 | case FORMAT_UNIT: | |
2993 | retcode = nvme_trans_format_unit(ns, hdr, cmd); | |
2994 | break; | |
2995 | case TEST_UNIT_READY: | |
2996 | retcode = nvme_trans_test_unit_ready(ns, hdr, cmd); | |
2997 | break; | |
2998 | case WRITE_BUFFER: | |
2999 | retcode = nvme_trans_write_buffer(ns, hdr, cmd); | |
3000 | break; | |
ec503733 KB |
3001 | case UNMAP: |
3002 | retcode = nvme_trans_unmap(ns, hdr, cmd); | |
3003 | break; | |
5d0f6131 VV |
3004 | default: |
3005 | out: | |
3006 | retcode = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
3007 | ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND, | |
3008 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
3009 | break; | |
3010 | } | |
3011 | return retcode; | |
3012 | } | |
3013 | ||
3014 | int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr) | |
3015 | { | |
3016 | struct sg_io_hdr hdr; | |
3017 | int retcode; | |
3018 | ||
3019 | if (!capable(CAP_SYS_ADMIN)) | |
3020 | return -EACCES; | |
3021 | if (copy_from_user(&hdr, u_hdr, sizeof(hdr))) | |
3022 | return -EFAULT; | |
3023 | if (hdr.interface_id != 'S') | |
3024 | return -EINVAL; | |
3025 | if (hdr.cmd_len > BLK_MAX_CDB) | |
3026 | return -EINVAL; | |
3027 | ||
3028 | retcode = nvme_scsi_translate(ns, &hdr); | |
3029 | if (retcode < 0) | |
3030 | return retcode; | |
3031 | if (retcode > 0) | |
3032 | retcode = SNTI_TRANSLATION_SUCCESS; | |
8741ee4c | 3033 | if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0) |
5d0f6131 VV |
3034 | return -EFAULT; |
3035 | ||
3036 | return retcode; | |
3037 | } | |
3038 | ||
3039 | int nvme_sg_get_version_num(int __user *ip) | |
3040 | { | |
3041 | return put_user(sg_version_num, ip); | |
3042 | } |