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5d0f6131 VV |
1 | /* |
2 | * NVM Express device driver | |
3 | * Copyright (c) 2011, Intel Corporation. | |
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. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | /* | |
20 | * Refer to the SCSI-NVMe Translation spec for details on how | |
21 | * each command is translated. | |
22 | */ | |
23 | ||
24 | #include <linux/nvme.h> | |
25 | #include <linux/bio.h> | |
26 | #include <linux/bitops.h> | |
27 | #include <linux/blkdev.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/genhd.h> | |
32 | #include <linux/idr.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/io.h> | |
36 | #include <linux/kdev_t.h> | |
37 | #include <linux/kthread.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/moduleparam.h> | |
42 | #include <linux/pci.h> | |
43 | #include <linux/poison.h> | |
44 | #include <linux/sched.h> | |
45 | #include <linux/slab.h> | |
46 | #include <linux/types.h> | |
47 | #include <linux/version.h> | |
48 | #include <scsi/sg.h> | |
49 | #include <scsi/scsi.h> | |
50 | ||
51 | ||
52 | static int sg_version_num = 30534; /* 2 digits for each component */ | |
53 | ||
54 | #define SNTI_TRANSLATION_SUCCESS 0 | |
55 | #define SNTI_INTERNAL_ERROR 1 | |
56 | ||
57 | /* VPD Page Codes */ | |
58 | #define VPD_SUPPORTED_PAGES 0x00 | |
59 | #define VPD_SERIAL_NUMBER 0x80 | |
60 | #define VPD_DEVICE_IDENTIFIERS 0x83 | |
61 | #define VPD_EXTENDED_INQUIRY 0x86 | |
62 | #define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1 | |
63 | ||
64 | /* CDB offsets */ | |
65 | #define REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET 6 | |
66 | #define REPORT_LUNS_SR_OFFSET 2 | |
67 | #define READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET 10 | |
68 | #define REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET 4 | |
69 | #define REQUEST_SENSE_DESC_OFFSET 1 | |
70 | #define REQUEST_SENSE_DESC_MASK 0x01 | |
71 | #define DESCRIPTOR_FORMAT_SENSE_DATA_TYPE 1 | |
72 | #define INQUIRY_EVPD_BYTE_OFFSET 1 | |
73 | #define INQUIRY_PAGE_CODE_BYTE_OFFSET 2 | |
74 | #define INQUIRY_EVPD_BIT_MASK 1 | |
75 | #define INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET 3 | |
76 | #define START_STOP_UNIT_CDB_IMMED_OFFSET 1 | |
77 | #define START_STOP_UNIT_CDB_IMMED_MASK 0x1 | |
78 | #define START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET 3 | |
79 | #define START_STOP_UNIT_CDB_POWER_COND_MOD_MASK 0xF | |
80 | #define START_STOP_UNIT_CDB_POWER_COND_OFFSET 4 | |
81 | #define START_STOP_UNIT_CDB_POWER_COND_MASK 0xF0 | |
82 | #define START_STOP_UNIT_CDB_NO_FLUSH_OFFSET 4 | |
83 | #define START_STOP_UNIT_CDB_NO_FLUSH_MASK 0x4 | |
84 | #define START_STOP_UNIT_CDB_START_OFFSET 4 | |
85 | #define START_STOP_UNIT_CDB_START_MASK 0x1 | |
86 | #define WRITE_BUFFER_CDB_MODE_OFFSET 1 | |
87 | #define WRITE_BUFFER_CDB_MODE_MASK 0x1F | |
88 | #define WRITE_BUFFER_CDB_BUFFER_ID_OFFSET 2 | |
89 | #define WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET 3 | |
90 | #define WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET 6 | |
91 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET 1 | |
92 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK 0xC0 | |
93 | #define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT 6 | |
94 | #define FORMAT_UNIT_CDB_LONG_LIST_OFFSET 1 | |
95 | #define FORMAT_UNIT_CDB_LONG_LIST_MASK 0x20 | |
96 | #define FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET 1 | |
97 | #define FORMAT_UNIT_CDB_FORMAT_DATA_MASK 0x10 | |
98 | #define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4 | |
99 | #define FORMAT_UNIT_LONG_PARM_LIST_LEN 8 | |
100 | #define FORMAT_UNIT_PROT_INT_OFFSET 3 | |
101 | #define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0 | |
102 | #define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07 | |
103 | ||
104 | /* Misc. defines */ | |
105 | #define NIBBLE_SHIFT 4 | |
106 | #define FIXED_SENSE_DATA 0x70 | |
107 | #define DESC_FORMAT_SENSE_DATA 0x72 | |
108 | #define FIXED_SENSE_DATA_ADD_LENGTH 10 | |
109 | #define LUN_ENTRY_SIZE 8 | |
110 | #define LUN_DATA_HEADER_SIZE 8 | |
111 | #define ALL_LUNS_RETURNED 0x02 | |
112 | #define ALL_WELL_KNOWN_LUNS_RETURNED 0x01 | |
113 | #define RESTRICTED_LUNS_RETURNED 0x00 | |
114 | #define NVME_POWER_STATE_START_VALID 0x00 | |
115 | #define NVME_POWER_STATE_ACTIVE 0x01 | |
116 | #define NVME_POWER_STATE_IDLE 0x02 | |
117 | #define NVME_POWER_STATE_STANDBY 0x03 | |
118 | #define NVME_POWER_STATE_LU_CONTROL 0x07 | |
119 | #define POWER_STATE_0 0 | |
120 | #define POWER_STATE_1 1 | |
121 | #define POWER_STATE_2 2 | |
122 | #define POWER_STATE_3 3 | |
123 | #define DOWNLOAD_SAVE_ACTIVATE 0x05 | |
124 | #define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E | |
125 | #define ACTIVATE_DEFERRED_MICROCODE 0x0F | |
126 | #define FORMAT_UNIT_IMMED_MASK 0x2 | |
127 | #define FORMAT_UNIT_IMMED_OFFSET 1 | |
128 | #define KELVIN_TEMP_FACTOR 273 | |
129 | #define FIXED_FMT_SENSE_DATA_SIZE 18 | |
130 | #define DESC_FMT_SENSE_DATA_SIZE 8 | |
131 | ||
132 | /* SCSI/NVMe defines and bit masks */ | |
133 | #define INQ_STANDARD_INQUIRY_PAGE 0x00 | |
134 | #define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00 | |
135 | #define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80 | |
136 | #define INQ_DEVICE_IDENTIFICATION_PAGE 0x83 | |
137 | #define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86 | |
138 | #define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1 | |
139 | #define INQ_SERIAL_NUMBER_LENGTH 0x14 | |
140 | #define INQ_NUM_SUPPORTED_VPD_PAGES 5 | |
141 | #define VERSION_SPC_4 0x06 | |
142 | #define ACA_UNSUPPORTED 0 | |
143 | #define STANDARD_INQUIRY_LENGTH 36 | |
144 | #define ADDITIONAL_STD_INQ_LENGTH 31 | |
145 | #define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C | |
146 | #define RESERVED_FIELD 0 | |
147 | ||
148 | /* SCSI READ/WRITE Defines */ | |
149 | #define IO_CDB_WP_MASK 0xE0 | |
150 | #define IO_CDB_WP_SHIFT 5 | |
151 | #define IO_CDB_FUA_MASK 0x8 | |
152 | #define IO_6_CDB_LBA_OFFSET 0 | |
153 | #define IO_6_CDB_LBA_MASK 0x001FFFFF | |
154 | #define IO_6_CDB_TX_LEN_OFFSET 4 | |
155 | #define IO_6_DEFAULT_TX_LEN 256 | |
156 | #define IO_10_CDB_LBA_OFFSET 2 | |
157 | #define IO_10_CDB_TX_LEN_OFFSET 7 | |
158 | #define IO_10_CDB_WP_OFFSET 1 | |
159 | #define IO_10_CDB_FUA_OFFSET 1 | |
160 | #define IO_12_CDB_LBA_OFFSET 2 | |
161 | #define IO_12_CDB_TX_LEN_OFFSET 6 | |
162 | #define IO_12_CDB_WP_OFFSET 1 | |
163 | #define IO_12_CDB_FUA_OFFSET 1 | |
164 | #define IO_16_CDB_FUA_OFFSET 1 | |
165 | #define IO_16_CDB_WP_OFFSET 1 | |
166 | #define IO_16_CDB_LBA_OFFSET 2 | |
167 | #define IO_16_CDB_TX_LEN_OFFSET 10 | |
168 | ||
169 | /* Mode Sense/Select defines */ | |
170 | #define MODE_PAGE_INFO_EXCEP 0x1C | |
171 | #define MODE_PAGE_CACHING 0x08 | |
172 | #define MODE_PAGE_CONTROL 0x0A | |
173 | #define MODE_PAGE_POWER_CONDITION 0x1A | |
174 | #define MODE_PAGE_RETURN_ALL 0x3F | |
175 | #define MODE_PAGE_BLK_DES_LEN 0x08 | |
176 | #define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10 | |
177 | #define MODE_PAGE_CACHING_LEN 0x14 | |
178 | #define MODE_PAGE_CONTROL_LEN 0x0C | |
179 | #define MODE_PAGE_POW_CND_LEN 0x28 | |
180 | #define MODE_PAGE_INF_EXC_LEN 0x0C | |
181 | #define MODE_PAGE_ALL_LEN 0x54 | |
182 | #define MODE_SENSE6_MPH_SIZE 4 | |
183 | #define MODE_SENSE6_ALLOC_LEN_OFFSET 4 | |
184 | #define MODE_SENSE_PAGE_CONTROL_OFFSET 2 | |
185 | #define MODE_SENSE_PAGE_CONTROL_MASK 0xC0 | |
186 | #define MODE_SENSE_PAGE_CODE_OFFSET 2 | |
187 | #define MODE_SENSE_PAGE_CODE_MASK 0x3F | |
188 | #define MODE_SENSE_LLBAA_OFFSET 1 | |
189 | #define MODE_SENSE_LLBAA_MASK 0x10 | |
190 | #define MODE_SENSE_LLBAA_SHIFT 4 | |
191 | #define MODE_SENSE_DBD_OFFSET 1 | |
192 | #define MODE_SENSE_DBD_MASK 8 | |
193 | #define MODE_SENSE_DBD_SHIFT 3 | |
194 | #define MODE_SENSE10_MPH_SIZE 8 | |
195 | #define MODE_SENSE10_ALLOC_LEN_OFFSET 7 | |
196 | #define MODE_SELECT_CDB_PAGE_FORMAT_OFFSET 1 | |
197 | #define MODE_SELECT_CDB_SAVE_PAGES_OFFSET 1 | |
198 | #define MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET 4 | |
199 | #define MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET 7 | |
200 | #define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10 | |
201 | #define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1 | |
202 | #define MODE_SELECT_6_BD_OFFSET 3 | |
203 | #define MODE_SELECT_10_BD_OFFSET 6 | |
204 | #define MODE_SELECT_10_LLBAA_OFFSET 4 | |
205 | #define MODE_SELECT_10_LLBAA_MASK 1 | |
206 | #define MODE_SELECT_6_MPH_SIZE 4 | |
207 | #define MODE_SELECT_10_MPH_SIZE 8 | |
208 | #define CACHING_MODE_PAGE_WCE_MASK 0x04 | |
209 | #define MODE_SENSE_BLK_DESC_ENABLED 0 | |
210 | #define MODE_SENSE_BLK_DESC_COUNT 1 | |
211 | #define MODE_SELECT_PAGE_CODE_MASK 0x3F | |
212 | #define SHORT_DESC_BLOCK 8 | |
213 | #define LONG_DESC_BLOCK 16 | |
214 | #define MODE_PAGE_POW_CND_LEN_FIELD 0x26 | |
215 | #define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A | |
216 | #define MODE_PAGE_CACHING_LEN_FIELD 0x12 | |
217 | #define MODE_PAGE_CONTROL_LEN_FIELD 0x0A | |
218 | #define MODE_SENSE_PC_CURRENT_VALUES 0 | |
219 | ||
220 | /* Log Sense defines */ | |
221 | #define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00 | |
222 | #define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07 | |
223 | #define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F | |
224 | #define LOG_PAGE_TEMPERATURE_PAGE 0x0D | |
225 | #define LOG_SENSE_CDB_SP_OFFSET 1 | |
226 | #define LOG_SENSE_CDB_SP_NOT_ENABLED 0 | |
227 | #define LOG_SENSE_CDB_PC_OFFSET 2 | |
228 | #define LOG_SENSE_CDB_PC_MASK 0xC0 | |
229 | #define LOG_SENSE_CDB_PC_SHIFT 6 | |
230 | #define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1 | |
231 | #define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F | |
232 | #define LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET 7 | |
233 | #define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8 | |
234 | #define LOG_INFO_EXCP_PAGE_LENGTH 0xC | |
235 | #define REMAINING_TEMP_PAGE_LENGTH 0xC | |
236 | #define LOG_TEMP_PAGE_LENGTH 0x10 | |
237 | #define LOG_TEMP_UNKNOWN 0xFF | |
238 | #define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3 | |
239 | ||
240 | /* Read Capacity defines */ | |
241 | #define READ_CAP_10_RESP_SIZE 8 | |
242 | #define READ_CAP_16_RESP_SIZE 32 | |
243 | ||
244 | /* NVMe Namespace and Command Defines */ | |
245 | #define NVME_GET_SMART_LOG_PAGE 0x02 | |
246 | #define NVME_GET_FEAT_TEMP_THRESH 0x04 | |
247 | #define BYTES_TO_DWORDS 4 | |
248 | #define NVME_MAX_FIRMWARE_SLOT 7 | |
249 | ||
250 | /* Report LUNs defines */ | |
251 | #define REPORT_LUNS_FIRST_LUN_OFFSET 8 | |
252 | ||
253 | /* SCSI ADDITIONAL SENSE Codes */ | |
254 | ||
255 | #define SCSI_ASC_NO_SENSE 0x00 | |
256 | #define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03 | |
257 | #define SCSI_ASC_LUN_NOT_READY 0x04 | |
258 | #define SCSI_ASC_WARNING 0x0B | |
259 | #define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10 | |
260 | #define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10 | |
261 | #define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10 | |
262 | #define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11 | |
263 | #define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D | |
264 | #define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20 | |
265 | #define SCSI_ASC_ILLEGAL_COMMAND 0x20 | |
266 | #define SCSI_ASC_ILLEGAL_BLOCK 0x21 | |
267 | #define SCSI_ASC_INVALID_CDB 0x24 | |
268 | #define SCSI_ASC_INVALID_LUN 0x25 | |
269 | #define SCSI_ASC_INVALID_PARAMETER 0x26 | |
270 | #define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31 | |
271 | #define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44 | |
272 | ||
273 | /* SCSI ADDITIONAL SENSE Code Qualifiers */ | |
274 | ||
275 | #define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00 | |
276 | #define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01 | |
277 | #define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01 | |
278 | #define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02 | |
279 | #define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03 | |
280 | #define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04 | |
281 | #define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08 | |
282 | #define SCSI_ASCQ_INVALID_LUN_ID 0x09 | |
283 | ||
284 | /** | |
285 | * DEVICE_SPECIFIC_PARAMETER in mode parameter header (see sbc2r16) to | |
286 | * enable DPOFUA support type 0x10 value. | |
287 | */ | |
288 | #define DEVICE_SPECIFIC_PARAMETER 0 | |
289 | #define VPD_ID_DESCRIPTOR_LENGTH sizeof(VPD_IDENTIFICATION_DESCRIPTOR) | |
290 | ||
291 | /* MACROs to extract information from CDBs */ | |
292 | ||
293 | #define GET_OPCODE(cdb) cdb[0] | |
294 | ||
295 | #define GET_U8_FROM_CDB(cdb, index) (cdb[index] << 0) | |
296 | ||
297 | #define GET_U16_FROM_CDB(cdb, index) ((cdb[index] << 8) | (cdb[index + 1] << 0)) | |
298 | ||
299 | #define GET_U24_FROM_CDB(cdb, index) ((cdb[index] << 16) | \ | |
300 | (cdb[index + 1] << 8) | \ | |
301 | (cdb[index + 2] << 0)) | |
302 | ||
303 | #define GET_U32_FROM_CDB(cdb, index) ((cdb[index] << 24) | \ | |
304 | (cdb[index + 1] << 16) | \ | |
305 | (cdb[index + 2] << 8) | \ | |
306 | (cdb[index + 3] << 0)) | |
307 | ||
308 | #define GET_U64_FROM_CDB(cdb, index) ((((u64)cdb[index]) << 56) | \ | |
309 | (((u64)cdb[index + 1]) << 48) | \ | |
310 | (((u64)cdb[index + 2]) << 40) | \ | |
311 | (((u64)cdb[index + 3]) << 32) | \ | |
312 | (((u64)cdb[index + 4]) << 24) | \ | |
313 | (((u64)cdb[index + 5]) << 16) | \ | |
314 | (((u64)cdb[index + 6]) << 8) | \ | |
315 | (((u64)cdb[index + 7]) << 0)) | |
316 | ||
317 | /* Inquiry Helper Macros */ | |
318 | #define GET_INQ_EVPD_BIT(cdb) \ | |
319 | ((GET_U8_FROM_CDB(cdb, INQUIRY_EVPD_BYTE_OFFSET) & \ | |
320 | INQUIRY_EVPD_BIT_MASK) ? 1 : 0) | |
321 | ||
322 | #define GET_INQ_PAGE_CODE(cdb) \ | |
323 | (GET_U8_FROM_CDB(cdb, INQUIRY_PAGE_CODE_BYTE_OFFSET)) | |
324 | ||
325 | #define GET_INQ_ALLOC_LENGTH(cdb) \ | |
326 | (GET_U16_FROM_CDB(cdb, INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET)) | |
327 | ||
328 | /* Report LUNs Helper Macros */ | |
329 | #define GET_REPORT_LUNS_ALLOC_LENGTH(cdb) \ | |
330 | (GET_U32_FROM_CDB(cdb, REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET)) | |
331 | ||
332 | /* Read Capacity Helper Macros */ | |
333 | #define GET_READ_CAP_16_ALLOC_LENGTH(cdb) \ | |
334 | (GET_U32_FROM_CDB(cdb, READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET)) | |
335 | ||
336 | #define IS_READ_CAP_16(cdb) \ | |
337 | ((cdb[0] == SERVICE_ACTION_IN && cdb[1] == SAI_READ_CAPACITY_16) ? 1 : 0) | |
338 | ||
339 | /* Request Sense Helper Macros */ | |
340 | #define GET_REQUEST_SENSE_ALLOC_LENGTH(cdb) \ | |
341 | (GET_U8_FROM_CDB(cdb, REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET)) | |
342 | ||
343 | /* Mode Sense Helper Macros */ | |
344 | #define GET_MODE_SENSE_DBD(cdb) \ | |
345 | ((GET_U8_FROM_CDB(cdb, MODE_SENSE_DBD_OFFSET) & MODE_SENSE_DBD_MASK) >> \ | |
346 | MODE_SENSE_DBD_SHIFT) | |
347 | ||
348 | #define GET_MODE_SENSE_LLBAA(cdb) \ | |
349 | ((GET_U8_FROM_CDB(cdb, MODE_SENSE_LLBAA_OFFSET) & \ | |
350 | MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT) | |
351 | ||
352 | #define GET_MODE_SENSE_MPH_SIZE(cdb10) \ | |
353 | (cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE) | |
354 | ||
355 | ||
356 | /* Struct to gather data that needs to be extracted from a SCSI CDB. | |
357 | Not conforming to any particular CDB variant, but compatible with all. */ | |
358 | ||
359 | struct nvme_trans_io_cdb { | |
360 | u8 fua; | |
361 | u8 prot_info; | |
362 | u64 lba; | |
363 | u32 xfer_len; | |
364 | }; | |
365 | ||
366 | ||
367 | /* Internal Helper Functions */ | |
368 | ||
369 | ||
370 | /* Copy data to userspace memory */ | |
371 | ||
372 | static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, | |
373 | unsigned long n) | |
374 | { | |
375 | int res = SNTI_TRANSLATION_SUCCESS; | |
376 | unsigned long not_copied; | |
377 | int i; | |
378 | void *index = from; | |
379 | size_t remaining = n; | |
380 | size_t xfer_len; | |
381 | ||
382 | if (hdr->iovec_count > 0) { | |
383 | struct sg_iovec *sgl = hdr->dxferp; | |
384 | ||
385 | for (i = 0; i < hdr->iovec_count; i++) { | |
386 | xfer_len = min(remaining, sgl[i].iov_len); | |
387 | not_copied = copy_to_user(__user sgl[i].iov_base, index, | |
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 | } | |
400 | not_copied = copy_to_user(__user hdr->dxferp, from, n); | |
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) { | |
419 | struct sg_iovec *sgl = hdr->dxferp; | |
420 | ||
421 | for (i = 0; i < hdr->iovec_count; i++) { | |
422 | xfer_len = min(remaining, sgl[i].iov_len); | |
423 | not_copied = copy_from_user(index, | |
424 | __user sgl[i].iov_base, xfer_len); | |
425 | if (not_copied) { | |
426 | res = -EFAULT; | |
427 | break; | |
428 | } | |
429 | index += xfer_len; | |
430 | remaining -= xfer_len; | |
431 | if (remaining == 0) | |
432 | break; | |
433 | } | |
434 | return res; | |
435 | } | |
436 | ||
437 | not_copied = copy_from_user(to, __user hdr->dxferp, n); | |
438 | if (not_copied) | |
439 | res = -EFAULT; | |
440 | return res; | |
441 | } | |
442 | ||
443 | /* Status/Sense Buffer Writeback */ | |
444 | ||
445 | static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key, | |
446 | u8 asc, u8 ascq) | |
447 | { | |
448 | int res = SNTI_TRANSLATION_SUCCESS; | |
449 | u8 xfer_len; | |
450 | u8 resp[DESC_FMT_SENSE_DATA_SIZE]; | |
451 | ||
452 | if (scsi_status_is_good(status)) { | |
453 | hdr->status = SAM_STAT_GOOD; | |
454 | hdr->masked_status = GOOD; | |
455 | hdr->host_status = DID_OK; | |
456 | hdr->driver_status = DRIVER_OK; | |
457 | hdr->sb_len_wr = 0; | |
458 | } else { | |
459 | hdr->status = status; | |
460 | hdr->masked_status = status >> 1; | |
461 | hdr->host_status = DID_OK; | |
462 | hdr->driver_status = DRIVER_OK; | |
463 | ||
464 | memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE); | |
465 | resp[0] = DESC_FORMAT_SENSE_DATA; | |
466 | resp[1] = sense_key; | |
467 | resp[2] = asc; | |
468 | resp[3] = ascq; | |
469 | ||
470 | xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE); | |
471 | hdr->sb_len_wr = xfer_len; | |
472 | if (copy_to_user(__user hdr->sbp, resp, xfer_len) > 0) | |
473 | res = -EFAULT; | |
474 | } | |
475 | ||
476 | return res; | |
477 | } | |
478 | ||
479 | static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc) | |
480 | { | |
481 | u8 status, sense_key, asc, ascq; | |
482 | int res = SNTI_TRANSLATION_SUCCESS; | |
483 | ||
484 | /* For non-nvme (Linux) errors, simply return the error code */ | |
485 | if (nvme_sc < 0) | |
486 | return nvme_sc; | |
487 | ||
488 | /* Mask DNR, More, and reserved fields */ | |
489 | nvme_sc &= 0x7FF; | |
490 | ||
491 | switch (nvme_sc) { | |
492 | /* Generic Command Status */ | |
493 | case NVME_SC_SUCCESS: | |
494 | status = SAM_STAT_GOOD; | |
495 | sense_key = NO_SENSE; | |
496 | asc = SCSI_ASC_NO_SENSE; | |
497 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
498 | break; | |
499 | case NVME_SC_INVALID_OPCODE: | |
500 | status = SAM_STAT_CHECK_CONDITION; | |
501 | sense_key = ILLEGAL_REQUEST; | |
502 | asc = SCSI_ASC_ILLEGAL_COMMAND; | |
503 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
504 | break; | |
505 | case NVME_SC_INVALID_FIELD: | |
506 | status = SAM_STAT_CHECK_CONDITION; | |
507 | sense_key = ILLEGAL_REQUEST; | |
508 | asc = SCSI_ASC_INVALID_CDB; | |
509 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
510 | break; | |
511 | case NVME_SC_DATA_XFER_ERROR: | |
512 | status = SAM_STAT_CHECK_CONDITION; | |
513 | sense_key = MEDIUM_ERROR; | |
514 | asc = SCSI_ASC_NO_SENSE; | |
515 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
516 | break; | |
517 | case NVME_SC_POWER_LOSS: | |
518 | status = SAM_STAT_TASK_ABORTED; | |
519 | sense_key = ABORTED_COMMAND; | |
520 | asc = SCSI_ASC_WARNING; | |
521 | ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED; | |
522 | break; | |
523 | case NVME_SC_INTERNAL: | |
524 | status = SAM_STAT_CHECK_CONDITION; | |
525 | sense_key = HARDWARE_ERROR; | |
526 | asc = SCSI_ASC_INTERNAL_TARGET_FAILURE; | |
527 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
528 | break; | |
529 | case NVME_SC_ABORT_REQ: | |
530 | status = SAM_STAT_TASK_ABORTED; | |
531 | sense_key = ABORTED_COMMAND; | |
532 | asc = SCSI_ASC_NO_SENSE; | |
533 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
534 | break; | |
535 | case NVME_SC_ABORT_QUEUE: | |
536 | status = SAM_STAT_TASK_ABORTED; | |
537 | sense_key = ABORTED_COMMAND; | |
538 | asc = SCSI_ASC_NO_SENSE; | |
539 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
540 | break; | |
541 | case NVME_SC_FUSED_FAIL: | |
542 | status = SAM_STAT_TASK_ABORTED; | |
543 | sense_key = ABORTED_COMMAND; | |
544 | asc = SCSI_ASC_NO_SENSE; | |
545 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
546 | break; | |
547 | case NVME_SC_FUSED_MISSING: | |
548 | status = SAM_STAT_TASK_ABORTED; | |
549 | sense_key = ABORTED_COMMAND; | |
550 | asc = SCSI_ASC_NO_SENSE; | |
551 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
552 | break; | |
553 | case NVME_SC_INVALID_NS: | |
554 | status = SAM_STAT_CHECK_CONDITION; | |
555 | sense_key = ILLEGAL_REQUEST; | |
556 | asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; | |
557 | ascq = SCSI_ASCQ_INVALID_LUN_ID; | |
558 | break; | |
559 | case NVME_SC_LBA_RANGE: | |
560 | status = SAM_STAT_CHECK_CONDITION; | |
561 | sense_key = ILLEGAL_REQUEST; | |
562 | asc = SCSI_ASC_ILLEGAL_BLOCK; | |
563 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
564 | break; | |
565 | case NVME_SC_CAP_EXCEEDED: | |
566 | status = SAM_STAT_CHECK_CONDITION; | |
567 | sense_key = MEDIUM_ERROR; | |
568 | asc = SCSI_ASC_NO_SENSE; | |
569 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
570 | break; | |
571 | case NVME_SC_NS_NOT_READY: | |
572 | status = SAM_STAT_CHECK_CONDITION; | |
573 | sense_key = NOT_READY; | |
574 | asc = SCSI_ASC_LUN_NOT_READY; | |
575 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
576 | break; | |
577 | ||
578 | /* Command Specific Status */ | |
579 | case NVME_SC_INVALID_FORMAT: | |
580 | status = SAM_STAT_CHECK_CONDITION; | |
581 | sense_key = ILLEGAL_REQUEST; | |
582 | asc = SCSI_ASC_FORMAT_COMMAND_FAILED; | |
583 | ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED; | |
584 | break; | |
585 | case NVME_SC_BAD_ATTRIBUTES: | |
586 | status = SAM_STAT_CHECK_CONDITION; | |
587 | sense_key = ILLEGAL_REQUEST; | |
588 | asc = SCSI_ASC_INVALID_CDB; | |
589 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
590 | break; | |
591 | ||
592 | /* Media Errors */ | |
593 | case NVME_SC_WRITE_FAULT: | |
594 | status = SAM_STAT_CHECK_CONDITION; | |
595 | sense_key = MEDIUM_ERROR; | |
596 | asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT; | |
597 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
598 | break; | |
599 | case NVME_SC_READ_ERROR: | |
600 | status = SAM_STAT_CHECK_CONDITION; | |
601 | sense_key = MEDIUM_ERROR; | |
602 | asc = SCSI_ASC_UNRECOVERED_READ_ERROR; | |
603 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
604 | break; | |
605 | case NVME_SC_GUARD_CHECK: | |
606 | status = SAM_STAT_CHECK_CONDITION; | |
607 | sense_key = MEDIUM_ERROR; | |
608 | asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED; | |
609 | ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED; | |
610 | break; | |
611 | case NVME_SC_APPTAG_CHECK: | |
612 | status = SAM_STAT_CHECK_CONDITION; | |
613 | sense_key = MEDIUM_ERROR; | |
614 | asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED; | |
615 | ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED; | |
616 | break; | |
617 | case NVME_SC_REFTAG_CHECK: | |
618 | status = SAM_STAT_CHECK_CONDITION; | |
619 | sense_key = MEDIUM_ERROR; | |
620 | asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED; | |
621 | ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED; | |
622 | break; | |
623 | case NVME_SC_COMPARE_FAILED: | |
624 | status = SAM_STAT_CHECK_CONDITION; | |
625 | sense_key = MISCOMPARE; | |
626 | asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY; | |
627 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
628 | break; | |
629 | case NVME_SC_ACCESS_DENIED: | |
630 | status = SAM_STAT_CHECK_CONDITION; | |
631 | sense_key = ILLEGAL_REQUEST; | |
632 | asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; | |
633 | ascq = SCSI_ASCQ_INVALID_LUN_ID; | |
634 | break; | |
635 | ||
636 | /* Unspecified/Default */ | |
637 | case NVME_SC_CMDID_CONFLICT: | |
638 | case NVME_SC_CMD_SEQ_ERROR: | |
639 | case NVME_SC_CQ_INVALID: | |
640 | case NVME_SC_QID_INVALID: | |
641 | case NVME_SC_QUEUE_SIZE: | |
642 | case NVME_SC_ABORT_LIMIT: | |
643 | case NVME_SC_ABORT_MISSING: | |
644 | case NVME_SC_ASYNC_LIMIT: | |
645 | case NVME_SC_FIRMWARE_SLOT: | |
646 | case NVME_SC_FIRMWARE_IMAGE: | |
647 | case NVME_SC_INVALID_VECTOR: | |
648 | case NVME_SC_INVALID_LOG_PAGE: | |
649 | default: | |
650 | status = SAM_STAT_CHECK_CONDITION; | |
651 | sense_key = ILLEGAL_REQUEST; | |
652 | asc = SCSI_ASC_NO_SENSE; | |
653 | ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
654 | break; | |
655 | } | |
656 | ||
657 | res = nvme_trans_completion(hdr, status, sense_key, asc, ascq); | |
658 | ||
659 | return res; | |
660 | } | |
661 | ||
662 | /* INQUIRY Helper Functions */ | |
663 | ||
664 | static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns, | |
665 | struct sg_io_hdr *hdr, u8 *inq_response, | |
666 | int alloc_len) | |
667 | { | |
668 | struct nvme_dev *dev = ns->dev; | |
669 | dma_addr_t dma_addr; | |
670 | void *mem; | |
671 | struct nvme_id_ns *id_ns; | |
672 | int res = SNTI_TRANSLATION_SUCCESS; | |
673 | int nvme_sc; | |
674 | int xfer_len; | |
675 | u8 resp_data_format = 0x02; | |
676 | u8 protect; | |
677 | u8 cmdque = 0x01 << 1; | |
678 | ||
679 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
680 | &dma_addr, GFP_KERNEL); | |
681 | if (mem == NULL) { | |
682 | res = -ENOMEM; | |
683 | goto out_dma; | |
684 | } | |
685 | ||
686 | /* nvme ns identify - use DPS value for PROTECT field */ | |
687 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
688 | res = nvme_trans_status_code(hdr, nvme_sc); | |
689 | /* | |
690 | * If nvme_sc was -ve, res will be -ve here. | |
691 | * If nvme_sc was +ve, the status would bace been translated, and res | |
692 | * can only be 0 or -ve. | |
693 | * - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc | |
694 | * - If -ve, return because its a Linux error. | |
695 | */ | |
696 | if (res) | |
697 | goto out_free; | |
698 | if (nvme_sc) { | |
699 | res = nvme_sc; | |
700 | goto out_free; | |
701 | } | |
702 | id_ns = mem; | |
703 | (id_ns->dps) ? (protect = 0x01) : (protect = 0); | |
704 | ||
705 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
706 | inq_response[2] = VERSION_SPC_4; | |
707 | inq_response[3] = resp_data_format; /*normaca=0 | hisup=0 */ | |
708 | inq_response[4] = ADDITIONAL_STD_INQ_LENGTH; | |
709 | inq_response[5] = protect; /* sccs=0 | acc=0 | tpgs=0 | pc3=0 */ | |
710 | inq_response[7] = cmdque; /* wbus16=0 | sync=0 | vs=0 */ | |
711 | strncpy(&inq_response[8], "NVMe ", 8); | |
712 | strncpy(&inq_response[16], dev->model, 16); | |
713 | strncpy(&inq_response[32], dev->firmware_rev, 4); | |
714 | ||
715 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
716 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
717 | ||
718 | out_free: | |
719 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
720 | dma_addr); | |
721 | out_dma: | |
722 | return res; | |
723 | } | |
724 | ||
725 | static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns, | |
726 | struct sg_io_hdr *hdr, u8 *inq_response, | |
727 | int alloc_len) | |
728 | { | |
729 | int res = SNTI_TRANSLATION_SUCCESS; | |
730 | int xfer_len; | |
731 | ||
732 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
733 | inq_response[1] = INQ_SUPPORTED_VPD_PAGES_PAGE; /* Page Code */ | |
734 | inq_response[3] = INQ_NUM_SUPPORTED_VPD_PAGES; /* Page Length */ | |
735 | inq_response[4] = INQ_SUPPORTED_VPD_PAGES_PAGE; | |
736 | inq_response[5] = INQ_UNIT_SERIAL_NUMBER_PAGE; | |
737 | inq_response[6] = INQ_DEVICE_IDENTIFICATION_PAGE; | |
738 | inq_response[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE; | |
739 | inq_response[8] = INQ_BDEV_CHARACTERISTICS_PAGE; | |
740 | ||
741 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
742 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
743 | ||
744 | return res; | |
745 | } | |
746 | ||
747 | static int nvme_trans_unit_serial_page(struct nvme_ns *ns, | |
748 | struct sg_io_hdr *hdr, u8 *inq_response, | |
749 | int alloc_len) | |
750 | { | |
751 | struct nvme_dev *dev = ns->dev; | |
752 | int res = SNTI_TRANSLATION_SUCCESS; | |
753 | int xfer_len; | |
754 | ||
755 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
756 | inq_response[1] = INQ_UNIT_SERIAL_NUMBER_PAGE; /* Page Code */ | |
757 | inq_response[3] = INQ_SERIAL_NUMBER_LENGTH; /* Page Length */ | |
758 | strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH); | |
759 | ||
760 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
761 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
762 | ||
763 | return res; | |
764 | } | |
765 | ||
766 | static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
767 | u8 *inq_response, int alloc_len) | |
768 | { | |
769 | struct nvme_dev *dev = ns->dev; | |
770 | dma_addr_t dma_addr; | |
771 | void *mem; | |
772 | struct nvme_id_ctrl *id_ctrl; | |
773 | int res = SNTI_TRANSLATION_SUCCESS; | |
774 | int nvme_sc; | |
775 | u8 ieee[4]; | |
776 | int xfer_len; | |
777 | u32 tmp_id = cpu_to_be64(ns->ns_id); | |
778 | ||
779 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
780 | &dma_addr, GFP_KERNEL); | |
781 | if (mem == NULL) { | |
782 | res = -ENOMEM; | |
783 | goto out_dma; | |
784 | } | |
785 | ||
786 | /* nvme controller identify */ | |
787 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
788 | res = nvme_trans_status_code(hdr, nvme_sc); | |
789 | if (res) | |
790 | goto out_free; | |
791 | if (nvme_sc) { | |
792 | res = nvme_sc; | |
793 | goto out_free; | |
794 | } | |
795 | id_ctrl = mem; | |
796 | ||
797 | /* Since SCSI tried to save 4 bits... [SPC-4(r34) Table 591] */ | |
798 | ieee[0] = id_ctrl->ieee[0] << 4; | |
799 | ieee[1] = id_ctrl->ieee[0] >> 4 | id_ctrl->ieee[1] << 4; | |
800 | ieee[2] = id_ctrl->ieee[1] >> 4 | id_ctrl->ieee[2] << 4; | |
801 | ieee[3] = id_ctrl->ieee[2] >> 4; | |
802 | ||
803 | memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); | |
804 | inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; /* Page Code */ | |
805 | inq_response[3] = 20; /* Page Length */ | |
806 | /* Designation Descriptor start */ | |
807 | inq_response[4] = 0x01; /* Proto ID=0h | Code set=1h */ | |
808 | inq_response[5] = 0x03; /* PIV=0b | Asso=00b | Designator Type=3h */ | |
809 | inq_response[6] = 0x00; /* Rsvd */ | |
810 | inq_response[7] = 16; /* Designator Length */ | |
811 | /* Designator start */ | |
812 | inq_response[8] = 0x60 | ieee[3]; /* NAA=6h | IEEE ID MSB, High nibble*/ | |
813 | inq_response[9] = ieee[2]; /* IEEE ID */ | |
814 | inq_response[10] = ieee[1]; /* IEEE ID */ | |
815 | inq_response[11] = ieee[0]; /* IEEE ID| Vendor Specific ID... */ | |
816 | inq_response[12] = (dev->pci_dev->vendor & 0xFF00) >> 8; | |
817 | inq_response[13] = (dev->pci_dev->vendor & 0x00FF); | |
818 | inq_response[14] = dev->serial[0]; | |
819 | inq_response[15] = dev->serial[1]; | |
820 | inq_response[16] = dev->model[0]; | |
821 | inq_response[17] = dev->model[1]; | |
822 | memcpy(&inq_response[18], &tmp_id, sizeof(u32)); | |
823 | /* Last 2 bytes are zero */ | |
824 | ||
825 | xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); | |
826 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
827 | ||
828 | out_free: | |
829 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
830 | dma_addr); | |
831 | out_dma: | |
832 | return res; | |
833 | } | |
834 | ||
835 | static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
836 | int alloc_len) | |
837 | { | |
838 | u8 *inq_response; | |
839 | int res = SNTI_TRANSLATION_SUCCESS; | |
840 | int nvme_sc; | |
841 | struct nvme_dev *dev = ns->dev; | |
842 | dma_addr_t dma_addr; | |
843 | void *mem; | |
844 | struct nvme_id_ctrl *id_ctrl; | |
845 | struct nvme_id_ns *id_ns; | |
846 | int xfer_len; | |
847 | u8 microcode = 0x80; | |
848 | u8 spt; | |
849 | u8 spt_lut[8] = {0, 0, 2, 1, 4, 6, 5, 7}; | |
850 | u8 grd_chk, app_chk, ref_chk, protect; | |
851 | u8 uask_sup = 0x20; | |
852 | u8 v_sup; | |
853 | u8 luiclr = 0x01; | |
854 | ||
855 | inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); | |
856 | if (inq_response == NULL) { | |
857 | res = -ENOMEM; | |
858 | goto out_mem; | |
859 | } | |
860 | ||
861 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
862 | &dma_addr, GFP_KERNEL); | |
863 | if (mem == NULL) { | |
864 | res = -ENOMEM; | |
865 | goto out_dma; | |
866 | } | |
867 | ||
868 | /* nvme ns identify */ | |
869 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
870 | res = nvme_trans_status_code(hdr, nvme_sc); | |
871 | if (res) | |
872 | goto out_free; | |
873 | if (nvme_sc) { | |
874 | res = nvme_sc; | |
875 | goto out_free; | |
876 | } | |
877 | id_ns = mem; | |
878 | spt = spt_lut[(id_ns->dpc) & 0x07] << 3; | |
879 | (id_ns->dps) ? (protect = 0x01) : (protect = 0); | |
880 | grd_chk = protect << 2; | |
881 | app_chk = protect << 1; | |
882 | ref_chk = protect; | |
883 | ||
884 | /* nvme controller identify */ | |
885 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
886 | res = nvme_trans_status_code(hdr, nvme_sc); | |
887 | if (res) | |
888 | goto out_free; | |
889 | if (nvme_sc) { | |
890 | res = nvme_sc; | |
891 | goto out_free; | |
892 | } | |
893 | id_ctrl = mem; | |
894 | v_sup = id_ctrl->vwc; | |
895 | ||
896 | memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
897 | inq_response[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE; /* Page Code */ | |
898 | inq_response[2] = 0x00; /* Page Length MSB */ | |
899 | inq_response[3] = 0x3C; /* Page Length LSB */ | |
900 | inq_response[4] = microcode | spt | grd_chk | app_chk | ref_chk; | |
901 | inq_response[5] = uask_sup; | |
902 | inq_response[6] = v_sup; | |
903 | inq_response[7] = luiclr; | |
904 | inq_response[8] = 0; | |
905 | inq_response[9] = 0; | |
906 | ||
907 | xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
908 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
909 | ||
910 | out_free: | |
911 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
912 | dma_addr); | |
913 | out_dma: | |
914 | kfree(inq_response); | |
915 | out_mem: | |
916 | return res; | |
917 | } | |
918 | ||
919 | static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
920 | int alloc_len) | |
921 | { | |
922 | u8 *inq_response; | |
923 | int res = SNTI_TRANSLATION_SUCCESS; | |
924 | int xfer_len; | |
925 | ||
926 | inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); | |
927 | if (inq_response == NULL) { | |
928 | res = -ENOMEM; | |
929 | goto out_mem; | |
930 | } | |
931 | ||
932 | memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
933 | inq_response[1] = INQ_BDEV_CHARACTERISTICS_PAGE; /* Page Code */ | |
934 | inq_response[2] = 0x00; /* Page Length MSB */ | |
935 | inq_response[3] = 0x3C; /* Page Length LSB */ | |
936 | inq_response[4] = 0x00; /* Medium Rotation Rate MSB */ | |
937 | inq_response[5] = 0x01; /* Medium Rotation Rate LSB */ | |
938 | inq_response[6] = 0x00; /* Form Factor */ | |
939 | ||
940 | xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); | |
941 | res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); | |
942 | ||
943 | kfree(inq_response); | |
944 | out_mem: | |
945 | return res; | |
946 | } | |
947 | ||
948 | /* LOG SENSE Helper Functions */ | |
949 | ||
950 | static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
951 | int alloc_len) | |
952 | { | |
953 | int res = SNTI_TRANSLATION_SUCCESS; | |
954 | int xfer_len; | |
955 | u8 *log_response; | |
956 | ||
957 | log_response = kmalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH, GFP_KERNEL); | |
958 | if (log_response == NULL) { | |
959 | res = -ENOMEM; | |
960 | goto out_mem; | |
961 | } | |
962 | memset(log_response, 0, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH); | |
963 | ||
964 | log_response[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE; | |
965 | /* Subpage=0x00, Page Length MSB=0 */ | |
966 | log_response[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH; | |
967 | log_response[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE; | |
968 | log_response[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE; | |
969 | log_response[6] = LOG_PAGE_TEMPERATURE_PAGE; | |
970 | ||
971 | xfer_len = min(alloc_len, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH); | |
972 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
973 | ||
974 | kfree(log_response); | |
975 | out_mem: | |
976 | return res; | |
977 | } | |
978 | ||
979 | static int nvme_trans_log_info_exceptions(struct nvme_ns *ns, | |
980 | struct sg_io_hdr *hdr, int alloc_len) | |
981 | { | |
982 | int res = SNTI_TRANSLATION_SUCCESS; | |
983 | int xfer_len; | |
984 | u8 *log_response; | |
985 | struct nvme_command c; | |
986 | struct nvme_dev *dev = ns->dev; | |
987 | struct nvme_smart_log *smart_log; | |
988 | dma_addr_t dma_addr; | |
989 | void *mem; | |
990 | u8 temp_c; | |
991 | u16 temp_k; | |
992 | ||
993 | log_response = kmalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL); | |
994 | if (log_response == NULL) { | |
995 | res = -ENOMEM; | |
996 | goto out_mem; | |
997 | } | |
998 | memset(log_response, 0, LOG_INFO_EXCP_PAGE_LENGTH); | |
999 | ||
1000 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1001 | sizeof(struct nvme_smart_log), | |
1002 | &dma_addr, GFP_KERNEL); | |
1003 | if (mem == NULL) { | |
1004 | res = -ENOMEM; | |
1005 | goto out_dma; | |
1006 | } | |
1007 | ||
1008 | /* Get SMART Log Page */ | |
1009 | memset(&c, 0, sizeof(c)); | |
1010 | c.common.opcode = nvme_admin_get_log_page; | |
1011 | c.common.nsid = cpu_to_le32(0xFFFFFFFF); | |
1012 | c.common.prp1 = cpu_to_le64(dma_addr); | |
1013 | c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) / | |
1014 | BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE); | |
1015 | res = nvme_submit_admin_cmd(dev, &c, NULL); | |
1016 | if (res != NVME_SC_SUCCESS) { | |
1017 | temp_c = LOG_TEMP_UNKNOWN; | |
1018 | } else { | |
1019 | smart_log = mem; | |
1020 | temp_k = (smart_log->temperature[1] << 8) + | |
1021 | (smart_log->temperature[0]); | |
1022 | temp_c = temp_k - KELVIN_TEMP_FACTOR; | |
1023 | } | |
1024 | ||
1025 | log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE; | |
1026 | /* Subpage=0x00, Page Length MSB=0 */ | |
1027 | log_response[3] = REMAINING_INFO_EXCP_PAGE_LENGTH; | |
1028 | /* Informational Exceptions Log Parameter 1 Start */ | |
1029 | /* Parameter Code=0x0000 bytes 4,5 */ | |
1030 | log_response[6] = 0x23; /* DU=0, TSD=1, ETC=0, TMC=0, FMT_AND_LNK=11b */ | |
1031 | log_response[7] = 0x04; /* PARAMETER LENGTH */ | |
1032 | /* Add sense Code and qualifier = 0x00 each */ | |
1033 | /* Use Temperature from NVMe Get Log Page, convert to C from K */ | |
1034 | log_response[10] = temp_c; | |
1035 | ||
1036 | xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH); | |
1037 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
1038 | ||
1039 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), | |
1040 | mem, dma_addr); | |
1041 | out_dma: | |
1042 | kfree(log_response); | |
1043 | out_mem: | |
1044 | return res; | |
1045 | } | |
1046 | ||
1047 | static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1048 | int alloc_len) | |
1049 | { | |
1050 | int res = SNTI_TRANSLATION_SUCCESS; | |
1051 | int xfer_len; | |
1052 | u8 *log_response; | |
1053 | struct nvme_command c; | |
1054 | struct nvme_dev *dev = ns->dev; | |
1055 | struct nvme_smart_log *smart_log; | |
1056 | dma_addr_t dma_addr; | |
1057 | void *mem; | |
1058 | u32 feature_resp; | |
1059 | u8 temp_c_cur, temp_c_thresh; | |
1060 | u16 temp_k; | |
1061 | ||
1062 | log_response = kmalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL); | |
1063 | if (log_response == NULL) { | |
1064 | res = -ENOMEM; | |
1065 | goto out_mem; | |
1066 | } | |
1067 | memset(log_response, 0, LOG_TEMP_PAGE_LENGTH); | |
1068 | ||
1069 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1070 | sizeof(struct nvme_smart_log), | |
1071 | &dma_addr, GFP_KERNEL); | |
1072 | if (mem == NULL) { | |
1073 | res = -ENOMEM; | |
1074 | goto out_dma; | |
1075 | } | |
1076 | ||
1077 | /* Get SMART Log Page */ | |
1078 | memset(&c, 0, sizeof(c)); | |
1079 | c.common.opcode = nvme_admin_get_log_page; | |
1080 | c.common.nsid = cpu_to_le32(0xFFFFFFFF); | |
1081 | c.common.prp1 = cpu_to_le64(dma_addr); | |
1082 | c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) / | |
1083 | BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE); | |
1084 | res = nvme_submit_admin_cmd(dev, &c, NULL); | |
1085 | if (res != NVME_SC_SUCCESS) { | |
1086 | temp_c_cur = LOG_TEMP_UNKNOWN; | |
1087 | } else { | |
1088 | smart_log = mem; | |
1089 | temp_k = (smart_log->temperature[1] << 8) + | |
1090 | (smart_log->temperature[0]); | |
1091 | temp_c_cur = temp_k - KELVIN_TEMP_FACTOR; | |
1092 | } | |
1093 | ||
1094 | /* Get Features for Temp Threshold */ | |
1095 | res = nvme_get_features(dev, NVME_FEAT_TEMP_THRESH, 0, 0, | |
1096 | &feature_resp); | |
1097 | if (res != NVME_SC_SUCCESS) | |
1098 | temp_c_thresh = LOG_TEMP_UNKNOWN; | |
1099 | else | |
1100 | temp_c_thresh = (feature_resp & 0xFFFF) - KELVIN_TEMP_FACTOR; | |
1101 | ||
1102 | log_response[0] = LOG_PAGE_TEMPERATURE_PAGE; | |
1103 | /* Subpage=0x00, Page Length MSB=0 */ | |
1104 | log_response[3] = REMAINING_TEMP_PAGE_LENGTH; | |
1105 | /* Temperature Log Parameter 1 (Temperature) Start */ | |
1106 | /* Parameter Code = 0x0000 */ | |
1107 | log_response[6] = 0x01; /* Format and Linking = 01b */ | |
1108 | log_response[7] = 0x02; /* Parameter Length */ | |
1109 | /* Use Temperature from NVMe Get Log Page, convert to C from K */ | |
1110 | log_response[9] = temp_c_cur; | |
1111 | /* Temperature Log Parameter 2 (Reference Temperature) Start */ | |
1112 | log_response[11] = 0x01; /* Parameter Code = 0x0001 */ | |
1113 | log_response[12] = 0x01; /* Format and Linking = 01b */ | |
1114 | log_response[13] = 0x02; /* Parameter Length */ | |
1115 | /* Use Temperature Thresh from NVMe Get Log Page, convert to C from K */ | |
1116 | log_response[15] = temp_c_thresh; | |
1117 | ||
1118 | xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH); | |
1119 | res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); | |
1120 | ||
1121 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), | |
1122 | mem, dma_addr); | |
1123 | out_dma: | |
1124 | kfree(log_response); | |
1125 | out_mem: | |
1126 | return res; | |
1127 | } | |
1128 | ||
1129 | /* MODE SENSE Helper Functions */ | |
1130 | ||
1131 | static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa, | |
1132 | u16 mode_data_length, u16 blk_desc_len) | |
1133 | { | |
1134 | /* Quick check to make sure I don't stomp on my own memory... */ | |
1135 | if ((cdb10 && len < 8) || (!cdb10 && len < 4)) | |
1136 | return SNTI_INTERNAL_ERROR; | |
1137 | ||
1138 | if (cdb10) { | |
1139 | resp[0] = (mode_data_length & 0xFF00) >> 8; | |
1140 | resp[1] = (mode_data_length & 0x00FF); | |
1141 | /* resp[2] and [3] are zero */ | |
1142 | resp[4] = llbaa; | |
1143 | resp[5] = RESERVED_FIELD; | |
1144 | resp[6] = (blk_desc_len & 0xFF00) >> 8; | |
1145 | resp[7] = (blk_desc_len & 0x00FF); | |
1146 | } else { | |
1147 | resp[0] = (mode_data_length & 0x00FF); | |
1148 | /* resp[1] and [2] are zero */ | |
1149 | resp[3] = (blk_desc_len & 0x00FF); | |
1150 | } | |
1151 | ||
1152 | return SNTI_TRANSLATION_SUCCESS; | |
1153 | } | |
1154 | ||
1155 | static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1156 | u8 *resp, int len, u8 llbaa) | |
1157 | { | |
1158 | int res = SNTI_TRANSLATION_SUCCESS; | |
1159 | int nvme_sc; | |
1160 | struct nvme_dev *dev = ns->dev; | |
1161 | dma_addr_t dma_addr; | |
1162 | void *mem; | |
1163 | struct nvme_id_ns *id_ns; | |
1164 | u8 flbas; | |
1165 | u32 lba_length; | |
1166 | ||
1167 | if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN) | |
1168 | return SNTI_INTERNAL_ERROR; | |
1169 | else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN) | |
1170 | return SNTI_INTERNAL_ERROR; | |
1171 | ||
1172 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1173 | &dma_addr, GFP_KERNEL); | |
1174 | if (mem == NULL) { | |
1175 | res = -ENOMEM; | |
1176 | goto out; | |
1177 | } | |
1178 | ||
1179 | /* nvme ns identify */ | |
1180 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1181 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1182 | if (res) | |
1183 | goto out_dma; | |
1184 | if (nvme_sc) { | |
1185 | res = nvme_sc; | |
1186 | goto out_dma; | |
1187 | } | |
1188 | id_ns = mem; | |
1189 | flbas = (id_ns->flbas) & 0x0F; | |
1190 | lba_length = (1 << (id_ns->lbaf[flbas].ds)); | |
1191 | ||
1192 | if (llbaa == 0) { | |
1193 | u32 tmp_cap = cpu_to_be32(id_ns->ncap); | |
1194 | /* Byte 4 is reserved */ | |
1195 | u32 tmp_len = cpu_to_be32(lba_length) & 0x00FFFFFF; | |
1196 | ||
1197 | memcpy(resp, &tmp_cap, sizeof(u32)); | |
1198 | memcpy(&resp[4], &tmp_len, sizeof(u32)); | |
1199 | } else { | |
1200 | u64 tmp_cap = cpu_to_be64(id_ns->ncap); | |
1201 | u32 tmp_len = cpu_to_be32(lba_length); | |
1202 | ||
1203 | memcpy(resp, &tmp_cap, sizeof(u64)); | |
1204 | /* Bytes 8, 9, 10, 11 are reserved */ | |
1205 | memcpy(&resp[12], &tmp_len, sizeof(u32)); | |
1206 | } | |
1207 | ||
1208 | out_dma: | |
1209 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
1210 | dma_addr); | |
1211 | out: | |
1212 | return res; | |
1213 | } | |
1214 | ||
1215 | static int nvme_trans_fill_control_page(struct nvme_ns *ns, | |
1216 | struct sg_io_hdr *hdr, u8 *resp, | |
1217 | int len) | |
1218 | { | |
1219 | if (len < MODE_PAGE_CONTROL_LEN) | |
1220 | return SNTI_INTERNAL_ERROR; | |
1221 | ||
1222 | resp[0] = MODE_PAGE_CONTROL; | |
1223 | resp[1] = MODE_PAGE_CONTROL_LEN_FIELD; | |
1224 | resp[2] = 0x0E; /* TST=000b, TMF_ONLY=0, DPICZ=1, | |
1225 | * D_SENSE=1, GLTSD=1, RLEC=0 */ | |
1226 | resp[3] = 0x12; /* Q_ALGO_MODIFIER=1h, NUAR=0, QERR=01b */ | |
1227 | /* Byte 4: VS=0, RAC=0, UA_INT=0, SWP=0 */ | |
1228 | resp[5] = 0x40; /* ATO=0, TAS=1, ATMPE=0, RWWP=0, AUTOLOAD=0 */ | |
1229 | /* resp[6] and [7] are obsolete, thus zero */ | |
1230 | resp[8] = 0xFF; /* Busy timeout period = 0xffff */ | |
1231 | resp[9] = 0xFF; | |
1232 | /* Bytes 10,11: Extended selftest completion time = 0x0000 */ | |
1233 | ||
1234 | return SNTI_TRANSLATION_SUCCESS; | |
1235 | } | |
1236 | ||
1237 | static int nvme_trans_fill_caching_page(struct nvme_ns *ns, | |
1238 | struct sg_io_hdr *hdr, | |
1239 | u8 *resp, int len) | |
1240 | { | |
1241 | int res = SNTI_TRANSLATION_SUCCESS; | |
1242 | int nvme_sc; | |
1243 | struct nvme_dev *dev = ns->dev; | |
1244 | u32 feature_resp; | |
1245 | u8 vwc; | |
1246 | ||
1247 | if (len < MODE_PAGE_CACHING_LEN) | |
1248 | return SNTI_INTERNAL_ERROR; | |
1249 | ||
1250 | nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0, | |
1251 | &feature_resp); | |
1252 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1253 | if (res) | |
1254 | goto out; | |
1255 | if (nvme_sc) { | |
1256 | res = nvme_sc; | |
1257 | goto out; | |
1258 | } | |
1259 | vwc = feature_resp & 0x00000001; | |
1260 | ||
1261 | resp[0] = MODE_PAGE_CACHING; | |
1262 | resp[1] = MODE_PAGE_CACHING_LEN_FIELD; | |
1263 | resp[2] = vwc << 2; | |
1264 | ||
1265 | out: | |
1266 | return res; | |
1267 | } | |
1268 | ||
1269 | static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns, | |
1270 | struct sg_io_hdr *hdr, u8 *resp, | |
1271 | int len) | |
1272 | { | |
1273 | int res = SNTI_TRANSLATION_SUCCESS; | |
1274 | ||
1275 | if (len < MODE_PAGE_POW_CND_LEN) | |
1276 | return SNTI_INTERNAL_ERROR; | |
1277 | ||
1278 | resp[0] = MODE_PAGE_POWER_CONDITION; | |
1279 | resp[1] = MODE_PAGE_POW_CND_LEN_FIELD; | |
1280 | /* All other bytes are zero */ | |
1281 | ||
1282 | return res; | |
1283 | } | |
1284 | ||
1285 | static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns, | |
1286 | struct sg_io_hdr *hdr, u8 *resp, | |
1287 | int len) | |
1288 | { | |
1289 | int res = SNTI_TRANSLATION_SUCCESS; | |
1290 | ||
1291 | if (len < MODE_PAGE_INF_EXC_LEN) | |
1292 | return SNTI_INTERNAL_ERROR; | |
1293 | ||
1294 | resp[0] = MODE_PAGE_INFO_EXCEP; | |
1295 | resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD; | |
1296 | resp[2] = 0x88; | |
1297 | /* All other bytes are zero */ | |
1298 | ||
1299 | return res; | |
1300 | } | |
1301 | ||
1302 | static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1303 | u8 *resp, int len) | |
1304 | { | |
1305 | int res = SNTI_TRANSLATION_SUCCESS; | |
1306 | u16 mode_pages_offset_1 = 0; | |
1307 | u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4; | |
1308 | ||
1309 | mode_pages_offset_2 = mode_pages_offset_1 + MODE_PAGE_CACHING_LEN; | |
1310 | mode_pages_offset_3 = mode_pages_offset_2 + MODE_PAGE_CONTROL_LEN; | |
1311 | mode_pages_offset_4 = mode_pages_offset_3 + MODE_PAGE_POW_CND_LEN; | |
1312 | ||
1313 | res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1], | |
1314 | MODE_PAGE_CACHING_LEN); | |
1315 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1316 | goto out; | |
1317 | res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2], | |
1318 | MODE_PAGE_CONTROL_LEN); | |
1319 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1320 | goto out; | |
1321 | res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3], | |
1322 | MODE_PAGE_POW_CND_LEN); | |
1323 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1324 | goto out; | |
1325 | res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4], | |
1326 | MODE_PAGE_INF_EXC_LEN); | |
1327 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1328 | goto out; | |
1329 | ||
1330 | out: | |
1331 | return res; | |
1332 | } | |
1333 | ||
1334 | static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa) | |
1335 | { | |
1336 | if (dbd == MODE_SENSE_BLK_DESC_ENABLED) { | |
1337 | /* SPC-4: len = 8 x Num_of_descriptors if llbaa = 0, 16x if 1 */ | |
1338 | return 8 * (llbaa + 1) * MODE_SENSE_BLK_DESC_COUNT; | |
1339 | } else { | |
1340 | return 0; | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | static int nvme_trans_mode_page_create(struct nvme_ns *ns, | |
1345 | struct sg_io_hdr *hdr, u8 *cmd, | |
1346 | u16 alloc_len, u8 cdb10, | |
1347 | int (*mode_page_fill_func) | |
1348 | (struct nvme_ns *, | |
1349 | struct sg_io_hdr *hdr, u8 *, int), | |
1350 | u16 mode_pages_tot_len) | |
1351 | { | |
1352 | int res = SNTI_TRANSLATION_SUCCESS; | |
1353 | int xfer_len; | |
1354 | u8 *response; | |
1355 | u8 dbd, llbaa; | |
1356 | u16 resp_size; | |
1357 | int mph_size; | |
1358 | u16 mode_pages_offset_1; | |
1359 | u16 blk_desc_len, blk_desc_offset, mode_data_length; | |
1360 | ||
1361 | dbd = GET_MODE_SENSE_DBD(cmd); | |
1362 | llbaa = GET_MODE_SENSE_LLBAA(cmd); | |
1363 | mph_size = GET_MODE_SENSE_MPH_SIZE(cdb10); | |
1364 | blk_desc_len = nvme_trans_get_blk_desc_len(dbd, llbaa); | |
1365 | ||
1366 | resp_size = mph_size + blk_desc_len + mode_pages_tot_len; | |
1367 | /* Refer spc4r34 Table 440 for calculation of Mode data Length field */ | |
1368 | mode_data_length = 3 + (3 * cdb10) + blk_desc_len + mode_pages_tot_len; | |
1369 | ||
1370 | blk_desc_offset = mph_size; | |
1371 | mode_pages_offset_1 = blk_desc_offset + blk_desc_len; | |
1372 | ||
1373 | response = kmalloc(resp_size, GFP_KERNEL); | |
1374 | if (response == NULL) { | |
1375 | res = -ENOMEM; | |
1376 | goto out_mem; | |
1377 | } | |
1378 | memset(response, 0, resp_size); | |
1379 | ||
1380 | res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10, | |
1381 | llbaa, mode_data_length, blk_desc_len); | |
1382 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1383 | goto out_free; | |
1384 | if (blk_desc_len > 0) { | |
1385 | res = nvme_trans_fill_blk_desc(ns, hdr, | |
1386 | &response[blk_desc_offset], | |
1387 | blk_desc_len, llbaa); | |
1388 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1389 | goto out_free; | |
1390 | } | |
1391 | res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1], | |
1392 | mode_pages_tot_len); | |
1393 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1394 | goto out_free; | |
1395 | ||
1396 | xfer_len = min(alloc_len, resp_size); | |
1397 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
1398 | ||
1399 | out_free: | |
1400 | kfree(response); | |
1401 | out_mem: | |
1402 | return res; | |
1403 | } | |
1404 | ||
1405 | /* Read Capacity Helper Functions */ | |
1406 | ||
1407 | static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns, | |
1408 | u8 cdb16) | |
1409 | { | |
1410 | u8 flbas; | |
1411 | u32 lba_length; | |
1412 | u64 rlba; | |
1413 | u8 prot_en; | |
1414 | u8 p_type_lut[4] = {0, 0, 1, 2}; | |
1415 | u64 tmp_rlba; | |
1416 | u32 tmp_rlba_32; | |
1417 | u32 tmp_len; | |
1418 | ||
1419 | flbas = (id_ns->flbas) & 0x0F; | |
1420 | lba_length = (1 << (id_ns->lbaf[flbas].ds)); | |
1421 | rlba = le64_to_cpup(&id_ns->nsze) - 1; | |
1422 | (id_ns->dps) ? (prot_en = 0x01) : (prot_en = 0); | |
1423 | ||
1424 | if (!cdb16) { | |
1425 | if (rlba > 0xFFFFFFFF) | |
1426 | rlba = 0xFFFFFFFF; | |
1427 | tmp_rlba_32 = cpu_to_be32(rlba); | |
1428 | tmp_len = cpu_to_be32(lba_length); | |
1429 | memcpy(response, &tmp_rlba_32, sizeof(u32)); | |
1430 | memcpy(&response[4], &tmp_len, sizeof(u32)); | |
1431 | } else { | |
1432 | tmp_rlba = cpu_to_be64(rlba); | |
1433 | tmp_len = cpu_to_be32(lba_length); | |
1434 | memcpy(response, &tmp_rlba, sizeof(u64)); | |
1435 | memcpy(&response[8], &tmp_len, sizeof(u32)); | |
1436 | response[12] = (p_type_lut[id_ns->dps & 0x3] << 1) | prot_en; | |
1437 | /* P_I_Exponent = 0x0 | LBPPBE = 0x0 */ | |
1438 | /* LBPME = 0 | LBPRZ = 0 | LALBA = 0x00 */ | |
1439 | /* Bytes 16-31 - Reserved */ | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | /* Start Stop Unit Helper Functions */ | |
1444 | ||
1445 | static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1446 | u8 pc, u8 pcmod, u8 start) | |
1447 | { | |
1448 | int res = SNTI_TRANSLATION_SUCCESS; | |
1449 | int nvme_sc; | |
1450 | struct nvme_dev *dev = ns->dev; | |
1451 | dma_addr_t dma_addr; | |
1452 | void *mem; | |
1453 | struct nvme_id_ctrl *id_ctrl; | |
1454 | int lowest_pow_st; /* max npss = lowest power consumption */ | |
1455 | unsigned ps_desired = 0; | |
1456 | ||
1457 | /* NVMe Controller Identify */ | |
1458 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1459 | sizeof(struct nvme_id_ctrl), | |
1460 | &dma_addr, GFP_KERNEL); | |
1461 | if (mem == NULL) { | |
1462 | res = -ENOMEM; | |
1463 | goto out; | |
1464 | } | |
1465 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
1466 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1467 | if (res) | |
1468 | goto out_dma; | |
1469 | if (nvme_sc) { | |
1470 | res = nvme_sc; | |
1471 | goto out_dma; | |
1472 | } | |
1473 | id_ctrl = mem; | |
1474 | lowest_pow_st = id_ctrl->npss - 1; | |
1475 | ||
1476 | switch (pc) { | |
1477 | case NVME_POWER_STATE_START_VALID: | |
1478 | /* Action unspecified if POWER CONDITION MODIFIER != 0 */ | |
1479 | if (pcmod == 0 && start == 0x1) | |
1480 | ps_desired = POWER_STATE_0; | |
1481 | if (pcmod == 0 && start == 0x0) | |
1482 | ps_desired = lowest_pow_st; | |
1483 | break; | |
1484 | case NVME_POWER_STATE_ACTIVE: | |
1485 | /* Action unspecified if POWER CONDITION MODIFIER != 0 */ | |
1486 | if (pcmod == 0) | |
1487 | ps_desired = POWER_STATE_0; | |
1488 | break; | |
1489 | case NVME_POWER_STATE_IDLE: | |
1490 | /* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */ | |
1491 | /* min of desired state and (lps-1) because lps is STOP */ | |
1492 | if (pcmod == 0x0) | |
1493 | ps_desired = min(POWER_STATE_1, (lowest_pow_st - 1)); | |
1494 | else if (pcmod == 0x1) | |
1495 | ps_desired = min(POWER_STATE_2, (lowest_pow_st - 1)); | |
1496 | else if (pcmod == 0x2) | |
1497 | ps_desired = min(POWER_STATE_3, (lowest_pow_st - 1)); | |
1498 | break; | |
1499 | case NVME_POWER_STATE_STANDBY: | |
1500 | /* Action unspecified if POWER CONDITION MODIFIER != [0,1] */ | |
1501 | if (pcmod == 0x0) | |
1502 | ps_desired = max(0, (lowest_pow_st - 2)); | |
1503 | else if (pcmod == 0x1) | |
1504 | ps_desired = max(0, (lowest_pow_st - 1)); | |
1505 | break; | |
1506 | case NVME_POWER_STATE_LU_CONTROL: | |
1507 | default: | |
1508 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1509 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1510 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1511 | break; | |
1512 | } | |
1513 | nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0, | |
1514 | NULL); | |
1515 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1516 | if (res) | |
1517 | goto out_dma; | |
1518 | if (nvme_sc) | |
1519 | res = nvme_sc; | |
1520 | out_dma: | |
1521 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, | |
1522 | dma_addr); | |
1523 | out: | |
1524 | return res; | |
1525 | } | |
1526 | ||
1527 | /* Write Buffer Helper Functions */ | |
1528 | /* Also using this for Format Unit with hdr passed as NULL, and buffer_id, 0 */ | |
1529 | ||
1530 | static int nvme_trans_send_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1531 | u8 opcode, u32 tot_len, u32 offset, | |
1532 | u8 buffer_id) | |
1533 | { | |
1534 | int res = SNTI_TRANSLATION_SUCCESS; | |
1535 | int nvme_sc; | |
1536 | struct nvme_dev *dev = ns->dev; | |
1537 | struct nvme_command c; | |
1538 | struct nvme_iod *iod = NULL; | |
1539 | unsigned length; | |
1540 | ||
1541 | memset(&c, 0, sizeof(c)); | |
1542 | c.common.opcode = opcode; | |
1543 | if (opcode == nvme_admin_download_fw) { | |
1544 | if (hdr->iovec_count > 0) { | |
1545 | /* Assuming SGL is not allowed for this command */ | |
1546 | res = nvme_trans_completion(hdr, | |
1547 | SAM_STAT_CHECK_CONDITION, | |
1548 | ILLEGAL_REQUEST, | |
1549 | SCSI_ASC_INVALID_CDB, | |
1550 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1551 | goto out; | |
1552 | } | |
1553 | iod = nvme_map_user_pages(dev, DMA_TO_DEVICE, | |
1554 | (unsigned long)hdr->dxferp, tot_len); | |
1555 | if (IS_ERR(iod)) { | |
1556 | res = PTR_ERR(iod); | |
1557 | goto out; | |
1558 | } | |
1559 | length = nvme_setup_prps(dev, &c.common, iod, tot_len, | |
1560 | GFP_KERNEL); | |
1561 | if (length != tot_len) { | |
1562 | res = -ENOMEM; | |
1563 | goto out_unmap; | |
1564 | } | |
1565 | ||
1566 | c.dlfw.numd = (tot_len/BYTES_TO_DWORDS) - 1; | |
1567 | c.dlfw.offset = offset/BYTES_TO_DWORDS; | |
1568 | } else if (opcode == nvme_admin_activate_fw) { | |
1569 | c.common.cdw10[0] = buffer_id; | |
1570 | /* AA=01b Replace & activate at reset */ | |
1571 | c.common.cdw10[0] |= 0x00000008; | |
1572 | } | |
1573 | ||
1574 | nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); | |
1575 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1576 | if (res) | |
1577 | goto out_unmap; | |
1578 | if (nvme_sc) | |
1579 | res = nvme_sc; | |
1580 | ||
1581 | out_unmap: | |
1582 | if (opcode == nvme_admin_download_fw) { | |
1583 | nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod); | |
1584 | nvme_free_iod(dev, iod); | |
1585 | } | |
1586 | out: | |
1587 | return res; | |
1588 | } | |
1589 | ||
1590 | /* Mode Select Helper Functions */ | |
1591 | ||
1592 | static inline void nvme_trans_modesel_get_bd_len(u8 *parm_list, u8 cdb10, | |
1593 | u16 *bd_len, u8 *llbaa) | |
1594 | { | |
1595 | if (cdb10) { | |
1596 | /* 10 Byte CDB */ | |
1597 | *bd_len = (parm_list[MODE_SELECT_10_BD_OFFSET] << 8) + | |
1598 | parm_list[MODE_SELECT_10_BD_OFFSET + 1]; | |
1599 | *llbaa = parm_list[MODE_SELECT_10_LLBAA_OFFSET] && | |
1600 | MODE_SELECT_10_LLBAA_MASK; | |
1601 | } else { | |
1602 | /* 6 Byte CDB */ | |
1603 | *bd_len = parm_list[MODE_SELECT_6_BD_OFFSET]; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list, | |
1608 | u16 idx, u16 bd_len, u8 llbaa) | |
1609 | { | |
1610 | u16 bd_num; | |
1611 | ||
1612 | bd_num = bd_len / ((llbaa == 0) ? | |
1613 | SHORT_DESC_BLOCK : LONG_DESC_BLOCK); | |
1614 | /* Store block descriptor info if a FORMAT UNIT comes later */ | |
1615 | /* TODO Saving 1st BD info; what to do if multiple BD received? */ | |
1616 | if (llbaa == 0) { | |
1617 | /* Standard Block Descriptor - spc4r34 7.5.5.1 */ | |
1618 | ns->mode_select_num_blocks = | |
1619 | (parm_list[idx + 1] << 16) + | |
1620 | (parm_list[idx + 2] << 8) + | |
1621 | (parm_list[idx + 3]); | |
1622 | ||
1623 | ns->mode_select_block_len = | |
1624 | (parm_list[idx + 5] << 16) + | |
1625 | (parm_list[idx + 6] << 8) + | |
1626 | (parm_list[idx + 7]); | |
1627 | } else { | |
1628 | /* Long LBA Block Descriptor - sbc3r27 6.4.2.3 */ | |
1629 | ns->mode_select_num_blocks = | |
1630 | (((u64)parm_list[idx + 0]) << 56) + | |
1631 | (((u64)parm_list[idx + 1]) << 48) + | |
1632 | (((u64)parm_list[idx + 2]) << 40) + | |
1633 | (((u64)parm_list[idx + 3]) << 32) + | |
1634 | (((u64)parm_list[idx + 4]) << 24) + | |
1635 | (((u64)parm_list[idx + 5]) << 16) + | |
1636 | (((u64)parm_list[idx + 6]) << 8) + | |
1637 | ((u64)parm_list[idx + 7]); | |
1638 | ||
1639 | ns->mode_select_block_len = | |
1640 | (parm_list[idx + 12] << 24) + | |
1641 | (parm_list[idx + 13] << 16) + | |
1642 | (parm_list[idx + 14] << 8) + | |
1643 | (parm_list[idx + 15]); | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | static u16 nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1648 | u8 *mode_page, u8 page_code) | |
1649 | { | |
1650 | int res = SNTI_TRANSLATION_SUCCESS; | |
1651 | int nvme_sc; | |
1652 | struct nvme_dev *dev = ns->dev; | |
1653 | unsigned dword11; | |
1654 | ||
1655 | switch (page_code) { | |
1656 | case MODE_PAGE_CACHING: | |
1657 | dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0); | |
1658 | nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11, | |
1659 | 0, NULL); | |
1660 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1661 | if (res) | |
1662 | break; | |
1663 | if (nvme_sc) { | |
1664 | res = nvme_sc; | |
1665 | break; | |
1666 | } | |
1667 | break; | |
1668 | case MODE_PAGE_CONTROL: | |
1669 | break; | |
1670 | case MODE_PAGE_POWER_CONDITION: | |
1671 | /* Verify the OS is not trying to set timers */ | |
1672 | if ((mode_page[2] & 0x01) != 0 || (mode_page[3] & 0x0F) != 0) { | |
1673 | res = nvme_trans_completion(hdr, | |
1674 | SAM_STAT_CHECK_CONDITION, | |
1675 | ILLEGAL_REQUEST, | |
1676 | SCSI_ASC_INVALID_PARAMETER, | |
1677 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1678 | if (!res) | |
1679 | res = SNTI_INTERNAL_ERROR; | |
1680 | break; | |
1681 | } | |
1682 | break; | |
1683 | default: | |
1684 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1685 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1686 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1687 | if (!res) | |
1688 | res = SNTI_INTERNAL_ERROR; | |
1689 | break; | |
1690 | } | |
1691 | ||
1692 | return res; | |
1693 | } | |
1694 | ||
1695 | static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1696 | u8 *cmd, u16 parm_list_len, u8 pf, | |
1697 | u8 sp, u8 cdb10) | |
1698 | { | |
1699 | int res = SNTI_TRANSLATION_SUCCESS; | |
1700 | u8 *parm_list; | |
1701 | u16 bd_len; | |
1702 | u8 llbaa = 0; | |
1703 | u16 index, saved_index; | |
1704 | u8 page_code; | |
1705 | u16 mp_size; | |
1706 | ||
1707 | /* Get parm list from data-in/out buffer */ | |
1708 | parm_list = kmalloc(parm_list_len, GFP_KERNEL); | |
1709 | if (parm_list == NULL) { | |
1710 | res = -ENOMEM; | |
1711 | goto out; | |
1712 | } | |
1713 | ||
1714 | res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len); | |
1715 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1716 | goto out_mem; | |
1717 | ||
1718 | nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa); | |
1719 | index = (cdb10) ? (MODE_SELECT_10_MPH_SIZE) : (MODE_SELECT_6_MPH_SIZE); | |
1720 | ||
1721 | if (bd_len != 0) { | |
1722 | /* Block Descriptors present, parse */ | |
1723 | nvme_trans_modesel_save_bd(ns, parm_list, index, bd_len, llbaa); | |
1724 | index += bd_len; | |
1725 | } | |
1726 | saved_index = index; | |
1727 | ||
1728 | /* Multiple mode pages may be present; iterate through all */ | |
1729 | /* In 1st Iteration, don't do NVME Command, only check for CDB errors */ | |
1730 | do { | |
1731 | page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK; | |
1732 | mp_size = parm_list[index + 1] + 2; | |
1733 | if ((page_code != MODE_PAGE_CACHING) && | |
1734 | (page_code != MODE_PAGE_CONTROL) && | |
1735 | (page_code != MODE_PAGE_POWER_CONDITION)) { | |
1736 | res = nvme_trans_completion(hdr, | |
1737 | SAM_STAT_CHECK_CONDITION, | |
1738 | ILLEGAL_REQUEST, | |
1739 | SCSI_ASC_INVALID_CDB, | |
1740 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1741 | goto out_mem; | |
1742 | } | |
1743 | index += mp_size; | |
1744 | } while (index < parm_list_len); | |
1745 | ||
1746 | /* In 2nd Iteration, do the NVME Commands */ | |
1747 | index = saved_index; | |
1748 | do { | |
1749 | page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK; | |
1750 | mp_size = parm_list[index + 1] + 2; | |
1751 | res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index], | |
1752 | page_code); | |
1753 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1754 | break; | |
1755 | index += mp_size; | |
1756 | } while (index < parm_list_len); | |
1757 | ||
1758 | out_mem: | |
1759 | kfree(parm_list); | |
1760 | out: | |
1761 | return res; | |
1762 | } | |
1763 | ||
1764 | /* Format Unit Helper Functions */ | |
1765 | ||
1766 | static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns, | |
1767 | struct sg_io_hdr *hdr) | |
1768 | { | |
1769 | int res = SNTI_TRANSLATION_SUCCESS; | |
1770 | int nvme_sc; | |
1771 | struct nvme_dev *dev = ns->dev; | |
1772 | dma_addr_t dma_addr; | |
1773 | void *mem; | |
1774 | struct nvme_id_ns *id_ns; | |
1775 | u8 flbas; | |
1776 | ||
1777 | /* | |
1778 | * SCSI Expects a MODE SELECT would have been issued prior to | |
1779 | * a FORMAT UNIT, and the block size and number would be used | |
1780 | * from the block descriptor in it. If a MODE SELECT had not | |
1781 | * been issued, FORMAT shall use the current values for both. | |
1782 | */ | |
1783 | ||
1784 | if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) { | |
1785 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
1786 | sizeof(struct nvme_id_ns), &dma_addr, GFP_KERNEL); | |
1787 | if (mem == NULL) { | |
1788 | res = -ENOMEM; | |
1789 | goto out; | |
1790 | } | |
1791 | /* nvme ns identify */ | |
1792 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1793 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1794 | if (res) | |
1795 | goto out_dma; | |
1796 | if (nvme_sc) { | |
1797 | res = nvme_sc; | |
1798 | goto out_dma; | |
1799 | } | |
1800 | id_ns = mem; | |
1801 | ||
1802 | if (ns->mode_select_num_blocks == 0) | |
1803 | ns->mode_select_num_blocks = id_ns->ncap; | |
1804 | if (ns->mode_select_block_len == 0) { | |
1805 | flbas = (id_ns->flbas) & 0x0F; | |
1806 | ns->mode_select_block_len = | |
1807 | (1 << (id_ns->lbaf[flbas].ds)); | |
1808 | } | |
1809 | out_dma: | |
1810 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1811 | mem, dma_addr); | |
1812 | } | |
1813 | out: | |
1814 | return res; | |
1815 | } | |
1816 | ||
1817 | static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len, | |
1818 | u8 format_prot_info, u8 *nvme_pf_code) | |
1819 | { | |
1820 | int res = SNTI_TRANSLATION_SUCCESS; | |
1821 | u8 *parm_list; | |
1822 | u8 pf_usage, pf_code; | |
1823 | ||
1824 | parm_list = kmalloc(len, GFP_KERNEL); | |
1825 | if (parm_list == NULL) { | |
1826 | res = -ENOMEM; | |
1827 | goto out; | |
1828 | } | |
1829 | res = nvme_trans_copy_from_user(hdr, parm_list, len); | |
1830 | if (res != SNTI_TRANSLATION_SUCCESS) | |
1831 | goto out_mem; | |
1832 | ||
1833 | if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] & | |
1834 | FORMAT_UNIT_IMMED_MASK) != 0) { | |
1835 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1836 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1837 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1838 | goto out_mem; | |
1839 | } | |
1840 | ||
1841 | if (len == FORMAT_UNIT_LONG_PARM_LIST_LEN && | |
1842 | (parm_list[FORMAT_UNIT_PROT_INT_OFFSET] & 0x0F) != 0) { | |
1843 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1844 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1845 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1846 | goto out_mem; | |
1847 | } | |
1848 | pf_usage = parm_list[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET] & | |
1849 | FORMAT_UNIT_PROT_FIELD_USAGE_MASK; | |
1850 | pf_code = (pf_usage << 2) | format_prot_info; | |
1851 | switch (pf_code) { | |
1852 | case 0: | |
1853 | *nvme_pf_code = 0; | |
1854 | break; | |
1855 | case 2: | |
1856 | *nvme_pf_code = 1; | |
1857 | break; | |
1858 | case 3: | |
1859 | *nvme_pf_code = 2; | |
1860 | break; | |
1861 | case 7: | |
1862 | *nvme_pf_code = 3; | |
1863 | break; | |
1864 | default: | |
1865 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1866 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
1867 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1868 | break; | |
1869 | } | |
1870 | ||
1871 | out_mem: | |
1872 | kfree(parm_list); | |
1873 | out: | |
1874 | return res; | |
1875 | } | |
1876 | ||
1877 | static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
1878 | u8 prot_info) | |
1879 | { | |
1880 | int res = SNTI_TRANSLATION_SUCCESS; | |
1881 | int nvme_sc; | |
1882 | struct nvme_dev *dev = ns->dev; | |
1883 | dma_addr_t dma_addr; | |
1884 | void *mem; | |
1885 | struct nvme_id_ns *id_ns; | |
1886 | u8 i; | |
1887 | u8 flbas, nlbaf; | |
1888 | u8 selected_lbaf = 0xFF; | |
1889 | u32 cdw10 = 0; | |
1890 | struct nvme_command c; | |
1891 | ||
1892 | /* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */ | |
1893 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
1894 | &dma_addr, GFP_KERNEL); | |
1895 | if (mem == NULL) { | |
1896 | res = -ENOMEM; | |
1897 | goto out; | |
1898 | } | |
1899 | /* nvme ns identify */ | |
1900 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
1901 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1902 | if (res) | |
1903 | goto out_dma; | |
1904 | if (nvme_sc) { | |
1905 | res = nvme_sc; | |
1906 | goto out_dma; | |
1907 | } | |
1908 | id_ns = mem; | |
1909 | flbas = (id_ns->flbas) & 0x0F; | |
1910 | nlbaf = id_ns->nlbaf; | |
1911 | ||
1912 | for (i = 0; i < nlbaf; i++) { | |
1913 | if (ns->mode_select_block_len == (1 << (id_ns->lbaf[i].ds))) { | |
1914 | selected_lbaf = i; | |
1915 | break; | |
1916 | } | |
1917 | } | |
1918 | if (selected_lbaf > 0x0F) { | |
1919 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1920 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER, | |
1921 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1922 | } | |
1923 | if (ns->mode_select_num_blocks != id_ns->ncap) { | |
1924 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
1925 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER, | |
1926 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
1927 | } | |
1928 | ||
1929 | cdw10 |= prot_info << 5; | |
1930 | cdw10 |= selected_lbaf & 0x0F; | |
1931 | memset(&c, 0, sizeof(c)); | |
1932 | c.format.opcode = nvme_admin_format_nvm; | |
1933 | c.format.nsid = ns->ns_id; | |
1934 | c.format.cdw10 = cpu_to_le32(cdw10); | |
1935 | ||
1936 | nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); | |
1937 | res = nvme_trans_status_code(hdr, nvme_sc); | |
1938 | if (res) | |
1939 | goto out_dma; | |
1940 | if (nvme_sc) | |
1941 | res = nvme_sc; | |
1942 | ||
1943 | out_dma: | |
1944 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
1945 | dma_addr); | |
1946 | out: | |
1947 | return res; | |
1948 | } | |
1949 | ||
1950 | /* Read/Write Helper Functions */ | |
1951 | ||
1952 | static inline void nvme_trans_get_io_cdb6(u8 *cmd, | |
1953 | struct nvme_trans_io_cdb *cdb_info) | |
1954 | { | |
1955 | cdb_info->fua = 0; | |
1956 | cdb_info->prot_info = 0; | |
1957 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_6_CDB_LBA_OFFSET) & | |
1958 | IO_6_CDB_LBA_MASK; | |
1959 | cdb_info->xfer_len = GET_U8_FROM_CDB(cmd, IO_6_CDB_TX_LEN_OFFSET); | |
1960 | ||
1961 | /* sbc3r27 sec 5.32 - TRANSFER LEN of 0 implies a 256 Block transfer */ | |
1962 | if (cdb_info->xfer_len == 0) | |
1963 | cdb_info->xfer_len = IO_6_DEFAULT_TX_LEN; | |
1964 | } | |
1965 | ||
1966 | static inline void nvme_trans_get_io_cdb10(u8 *cmd, | |
1967 | struct nvme_trans_io_cdb *cdb_info) | |
1968 | { | |
1969 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_10_CDB_FUA_OFFSET) & | |
1970 | IO_CDB_FUA_MASK; | |
1971 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_10_CDB_WP_OFFSET) & | |
1972 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
1973 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_10_CDB_LBA_OFFSET); | |
1974 | cdb_info->xfer_len = GET_U16_FROM_CDB(cmd, IO_10_CDB_TX_LEN_OFFSET); | |
1975 | } | |
1976 | ||
1977 | static inline void nvme_trans_get_io_cdb12(u8 *cmd, | |
1978 | struct nvme_trans_io_cdb *cdb_info) | |
1979 | { | |
1980 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_12_CDB_FUA_OFFSET) & | |
1981 | IO_CDB_FUA_MASK; | |
1982 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_12_CDB_WP_OFFSET) & | |
1983 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
1984 | cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_12_CDB_LBA_OFFSET); | |
1985 | cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_12_CDB_TX_LEN_OFFSET); | |
1986 | } | |
1987 | ||
1988 | static inline void nvme_trans_get_io_cdb16(u8 *cmd, | |
1989 | struct nvme_trans_io_cdb *cdb_info) | |
1990 | { | |
1991 | cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_16_CDB_FUA_OFFSET) & | |
1992 | IO_CDB_FUA_MASK; | |
1993 | cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_16_CDB_WP_OFFSET) & | |
1994 | IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; | |
1995 | cdb_info->lba = GET_U64_FROM_CDB(cmd, IO_16_CDB_LBA_OFFSET); | |
1996 | cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_16_CDB_TX_LEN_OFFSET); | |
1997 | } | |
1998 | ||
1999 | static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr, | |
2000 | struct nvme_trans_io_cdb *cdb_info, | |
2001 | u32 max_blocks) | |
2002 | { | |
2003 | /* If using iovecs, send one nvme command per vector */ | |
2004 | if (hdr->iovec_count > 0) | |
2005 | return hdr->iovec_count; | |
2006 | else if (cdb_info->xfer_len > max_blocks) | |
2007 | return ((cdb_info->xfer_len - 1) / max_blocks) + 1; | |
2008 | else | |
2009 | return 1; | |
2010 | } | |
2011 | ||
2012 | static u16 nvme_trans_io_get_control(struct nvme_ns *ns, | |
2013 | struct nvme_trans_io_cdb *cdb_info) | |
2014 | { | |
2015 | u16 control = 0; | |
2016 | ||
2017 | /* When Protection information support is added, implement here */ | |
2018 | ||
2019 | if (cdb_info->fua > 0) | |
2020 | control |= NVME_RW_FUA; | |
2021 | ||
2022 | return control; | |
2023 | } | |
2024 | ||
2025 | static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2026 | struct nvme_trans_io_cdb *cdb_info, u8 is_write) | |
2027 | { | |
2028 | int res = SNTI_TRANSLATION_SUCCESS; | |
2029 | int nvme_sc; | |
2030 | struct nvme_dev *dev = ns->dev; | |
2031 | struct nvme_queue *nvmeq = get_nvmeq(ns->dev); | |
2032 | u32 num_cmds; | |
2033 | struct nvme_iod *iod; | |
2034 | u64 unit_len; | |
2035 | u64 unit_num_blocks; /* Number of blocks to xfer in each nvme cmd */ | |
2036 | u32 retcode; | |
2037 | u32 i = 0; | |
2038 | u64 nvme_offset = 0; | |
2039 | void *next_mapping_addr; | |
2040 | struct nvme_command c; | |
2041 | u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read); | |
2042 | u16 control; | |
2043 | u32 max_blocks = (dev->max_hw_sectors << 9) >> ns->lba_shift; | |
2044 | ||
2045 | num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks); | |
2046 | ||
2047 | /* | |
2048 | * This loop handles two cases. | |
2049 | * First, when an SGL is used in the form of an iovec list: | |
2050 | * - Use iov_base as the next mapping address for the nvme command_id | |
2051 | * - Use iov_len as the data transfer length for the command. | |
2052 | * Second, when we have a single buffer | |
2053 | * - If larger than max_blocks, split into chunks, offset | |
2054 | * each nvme command accordingly. | |
2055 | */ | |
2056 | for (i = 0; i < num_cmds; i++) { | |
2057 | memset(&c, 0, sizeof(c)); | |
2058 | if (hdr->iovec_count > 0) { | |
2059 | struct sg_iovec *sgl = hdr->dxferp; | |
2060 | ||
2061 | unit_len = sgl[i].iov_len; | |
2062 | unit_num_blocks = unit_len >> ns->lba_shift; | |
2063 | next_mapping_addr = sgl[i].iov_base; | |
2064 | } else { | |
2065 | unit_num_blocks = min((u64)max_blocks, | |
2066 | (cdb_info->xfer_len - nvme_offset)); | |
2067 | unit_len = unit_num_blocks << ns->lba_shift; | |
2068 | next_mapping_addr = hdr->dxferp + | |
2069 | ((1 << ns->lba_shift) * nvme_offset); | |
2070 | } | |
2071 | ||
2072 | c.rw.opcode = opcode; | |
2073 | c.rw.nsid = cpu_to_le32(ns->ns_id); | |
2074 | c.rw.slba = cpu_to_le64(cdb_info->lba + nvme_offset); | |
2075 | c.rw.length = cpu_to_le16(unit_num_blocks - 1); | |
2076 | control = nvme_trans_io_get_control(ns, cdb_info); | |
2077 | c.rw.control = cpu_to_le16(control); | |
2078 | ||
2079 | iod = nvme_map_user_pages(dev, | |
2080 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2081 | (unsigned long)next_mapping_addr, unit_len); | |
2082 | if (IS_ERR(iod)) { | |
2083 | res = PTR_ERR(iod); | |
2084 | goto out; | |
2085 | } | |
2086 | retcode = nvme_setup_prps(dev, &c.common, iod, unit_len, | |
2087 | GFP_KERNEL); | |
2088 | if (retcode != unit_len) { | |
2089 | nvme_unmap_user_pages(dev, | |
2090 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2091 | iod); | |
2092 | nvme_free_iod(dev, iod); | |
2093 | res = -ENOMEM; | |
2094 | goto out; | |
2095 | } | |
2096 | ||
2097 | nvme_offset += unit_num_blocks; | |
2098 | ||
2099 | nvmeq = get_nvmeq(dev); | |
2100 | /* | |
2101 | * Since nvme_submit_sync_cmd sleeps, we can't keep | |
2102 | * preemption disabled. We may be preempted at any | |
2103 | * point, and be rescheduled to a different CPU. That | |
2104 | * will cause cacheline bouncing, but no additional | |
2105 | * races since q_lock already protects against other | |
2106 | * CPUs. | |
2107 | */ | |
2108 | put_nvmeq(nvmeq); | |
2109 | nvme_sc = nvme_submit_sync_cmd(nvmeq, &c, NULL, | |
2110 | NVME_IO_TIMEOUT); | |
2111 | if (nvme_sc != NVME_SC_SUCCESS) { | |
2112 | nvme_unmap_user_pages(dev, | |
2113 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2114 | iod); | |
2115 | nvme_free_iod(dev, iod); | |
2116 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2117 | goto out; | |
2118 | } | |
2119 | nvme_unmap_user_pages(dev, | |
2120 | (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, | |
2121 | iod); | |
2122 | nvme_free_iod(dev, iod); | |
2123 | } | |
2124 | res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS); | |
2125 | ||
2126 | out: | |
2127 | return res; | |
2128 | } | |
2129 | ||
2130 | ||
2131 | /* SCSI Command Translation Functions */ | |
2132 | ||
2133 | static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, | |
2134 | u8 *cmd) | |
2135 | { | |
2136 | int res = SNTI_TRANSLATION_SUCCESS; | |
2137 | struct nvme_trans_io_cdb cdb_info; | |
2138 | u8 opcode = cmd[0]; | |
2139 | u64 xfer_bytes; | |
2140 | u64 sum_iov_len = 0; | |
2141 | struct sg_iovec *sgl; | |
2142 | int i; | |
2143 | ||
2144 | /* Extract Fields from CDB */ | |
2145 | switch (opcode) { | |
2146 | case WRITE_6: | |
2147 | case READ_6: | |
2148 | nvme_trans_get_io_cdb6(cmd, &cdb_info); | |
2149 | break; | |
2150 | case WRITE_10: | |
2151 | case READ_10: | |
2152 | nvme_trans_get_io_cdb10(cmd, &cdb_info); | |
2153 | break; | |
2154 | case WRITE_12: | |
2155 | case READ_12: | |
2156 | nvme_trans_get_io_cdb12(cmd, &cdb_info); | |
2157 | break; | |
2158 | case WRITE_16: | |
2159 | case READ_16: | |
2160 | nvme_trans_get_io_cdb16(cmd, &cdb_info); | |
2161 | break; | |
2162 | default: | |
2163 | /* Will never really reach here */ | |
2164 | res = SNTI_INTERNAL_ERROR; | |
2165 | goto out; | |
2166 | } | |
2167 | ||
2168 | /* Calculate total length of transfer (in bytes) */ | |
2169 | if (hdr->iovec_count > 0) { | |
2170 | sgl = hdr->dxferp; | |
2171 | for (i = 0; i < hdr->iovec_count; i++) { | |
2172 | sum_iov_len += sgl[i].iov_len; | |
2173 | /* IO vector sizes should be multiples of block size */ | |
2174 | if (sgl[i].iov_len % (1 << ns->lba_shift) != 0) { | |
2175 | res = nvme_trans_completion(hdr, | |
2176 | SAM_STAT_CHECK_CONDITION, | |
2177 | ILLEGAL_REQUEST, | |
2178 | SCSI_ASC_INVALID_PARAMETER, | |
2179 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2180 | goto out; | |
2181 | } | |
2182 | } | |
2183 | } else { | |
2184 | sum_iov_len = hdr->dxfer_len; | |
2185 | } | |
2186 | ||
2187 | /* As Per sg ioctl howto, if the lengths differ, use the lower one */ | |
2188 | xfer_bytes = min(((u64)hdr->dxfer_len), sum_iov_len); | |
2189 | ||
2190 | /* If block count and actual data buffer size dont match, error out */ | |
2191 | if (xfer_bytes != (cdb_info.xfer_len << ns->lba_shift)) { | |
2192 | res = -EINVAL; | |
2193 | goto out; | |
2194 | } | |
2195 | ||
2196 | /* Check for 0 length transfer - it is not illegal */ | |
2197 | if (cdb_info.xfer_len == 0) | |
2198 | goto out; | |
2199 | ||
2200 | /* Send NVMe IO Command(s) */ | |
2201 | res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write); | |
2202 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2203 | goto out; | |
2204 | ||
2205 | out: | |
2206 | return res; | |
2207 | } | |
2208 | ||
2209 | static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2210 | u8 *cmd) | |
2211 | { | |
2212 | int res = SNTI_TRANSLATION_SUCCESS; | |
2213 | u8 evpd; | |
2214 | u8 page_code; | |
2215 | int alloc_len; | |
2216 | u8 *inq_response; | |
2217 | ||
2218 | evpd = GET_INQ_EVPD_BIT(cmd); | |
2219 | page_code = GET_INQ_PAGE_CODE(cmd); | |
2220 | alloc_len = GET_INQ_ALLOC_LENGTH(cmd); | |
2221 | ||
2222 | inq_response = kmalloc(STANDARD_INQUIRY_LENGTH, GFP_KERNEL); | |
2223 | if (inq_response == NULL) { | |
2224 | res = -ENOMEM; | |
2225 | goto out_mem; | |
2226 | } | |
2227 | ||
2228 | if (evpd == 0) { | |
2229 | if (page_code == INQ_STANDARD_INQUIRY_PAGE) { | |
2230 | res = nvme_trans_standard_inquiry_page(ns, hdr, | |
2231 | inq_response, alloc_len); | |
2232 | } else { | |
2233 | res = nvme_trans_completion(hdr, | |
2234 | SAM_STAT_CHECK_CONDITION, | |
2235 | ILLEGAL_REQUEST, | |
2236 | SCSI_ASC_INVALID_CDB, | |
2237 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2238 | } | |
2239 | } else { | |
2240 | switch (page_code) { | |
2241 | case VPD_SUPPORTED_PAGES: | |
2242 | res = nvme_trans_supported_vpd_pages(ns, hdr, | |
2243 | inq_response, alloc_len); | |
2244 | break; | |
2245 | case VPD_SERIAL_NUMBER: | |
2246 | res = nvme_trans_unit_serial_page(ns, hdr, inq_response, | |
2247 | alloc_len); | |
2248 | break; | |
2249 | case VPD_DEVICE_IDENTIFIERS: | |
2250 | res = nvme_trans_device_id_page(ns, hdr, inq_response, | |
2251 | alloc_len); | |
2252 | break; | |
2253 | case VPD_EXTENDED_INQUIRY: | |
2254 | res = nvme_trans_ext_inq_page(ns, hdr, alloc_len); | |
2255 | break; | |
2256 | case VPD_BLOCK_DEV_CHARACTERISTICS: | |
2257 | res = nvme_trans_bdev_char_page(ns, hdr, alloc_len); | |
2258 | break; | |
2259 | default: | |
2260 | res = nvme_trans_completion(hdr, | |
2261 | SAM_STAT_CHECK_CONDITION, | |
2262 | ILLEGAL_REQUEST, | |
2263 | SCSI_ASC_INVALID_CDB, | |
2264 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2265 | break; | |
2266 | } | |
2267 | } | |
2268 | kfree(inq_response); | |
2269 | out_mem: | |
2270 | return res; | |
2271 | } | |
2272 | ||
2273 | static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2274 | u8 *cmd) | |
2275 | { | |
2276 | int res = SNTI_TRANSLATION_SUCCESS; | |
2277 | u16 alloc_len; | |
2278 | u8 sp; | |
2279 | u8 pc; | |
2280 | u8 page_code; | |
2281 | ||
2282 | sp = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_SP_OFFSET); | |
2283 | if (sp != LOG_SENSE_CDB_SP_NOT_ENABLED) { | |
2284 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2285 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2286 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2287 | goto out; | |
2288 | } | |
2289 | pc = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_PC_OFFSET); | |
2290 | page_code = pc & LOG_SENSE_CDB_PAGE_CODE_MASK; | |
2291 | pc = (pc & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT; | |
2292 | if (pc != LOG_SENSE_CDB_PC_CUMULATIVE_VALUES) { | |
2293 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2294 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2295 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2296 | goto out; | |
2297 | } | |
2298 | alloc_len = GET_U16_FROM_CDB(cmd, LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET); | |
2299 | switch (page_code) { | |
2300 | case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE: | |
2301 | res = nvme_trans_log_supp_pages(ns, hdr, alloc_len); | |
2302 | break; | |
2303 | case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE: | |
2304 | res = nvme_trans_log_info_exceptions(ns, hdr, alloc_len); | |
2305 | break; | |
2306 | case LOG_PAGE_TEMPERATURE_PAGE: | |
2307 | res = nvme_trans_log_temperature(ns, hdr, alloc_len); | |
2308 | break; | |
2309 | default: | |
2310 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2311 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2312 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2313 | break; | |
2314 | } | |
2315 | ||
2316 | out: | |
2317 | return res; | |
2318 | } | |
2319 | ||
2320 | static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2321 | u8 *cmd) | |
2322 | { | |
2323 | int res = SNTI_TRANSLATION_SUCCESS; | |
2324 | u8 cdb10 = 0; | |
2325 | u16 parm_list_len; | |
2326 | u8 page_format; | |
2327 | u8 save_pages; | |
2328 | ||
2329 | page_format = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_PAGE_FORMAT_OFFSET); | |
2330 | page_format &= MODE_SELECT_CDB_PAGE_FORMAT_MASK; | |
2331 | ||
2332 | save_pages = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_SAVE_PAGES_OFFSET); | |
2333 | save_pages &= MODE_SELECT_CDB_SAVE_PAGES_MASK; | |
2334 | ||
2335 | if (GET_OPCODE(cmd) == MODE_SELECT) { | |
2336 | parm_list_len = GET_U8_FROM_CDB(cmd, | |
2337 | MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET); | |
2338 | } else { | |
2339 | parm_list_len = GET_U16_FROM_CDB(cmd, | |
2340 | MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET); | |
2341 | cdb10 = 1; | |
2342 | } | |
2343 | ||
2344 | if (parm_list_len != 0) { | |
2345 | /* | |
2346 | * According to SPC-4 r24, a paramter list length field of 0 | |
2347 | * shall not be considered an error | |
2348 | */ | |
2349 | res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len, | |
2350 | page_format, save_pages, cdb10); | |
2351 | } | |
2352 | ||
2353 | return res; | |
2354 | } | |
2355 | ||
2356 | static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2357 | u8 *cmd) | |
2358 | { | |
2359 | int res = SNTI_TRANSLATION_SUCCESS; | |
2360 | u16 alloc_len; | |
2361 | u8 cdb10 = 0; | |
2362 | u8 page_code; | |
2363 | u8 pc; | |
2364 | ||
2365 | if (GET_OPCODE(cmd) == MODE_SENSE) { | |
2366 | alloc_len = GET_U8_FROM_CDB(cmd, MODE_SENSE6_ALLOC_LEN_OFFSET); | |
2367 | } else { | |
2368 | alloc_len = GET_U16_FROM_CDB(cmd, | |
2369 | MODE_SENSE10_ALLOC_LEN_OFFSET); | |
2370 | cdb10 = 1; | |
2371 | } | |
2372 | ||
2373 | pc = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CONTROL_OFFSET) & | |
2374 | MODE_SENSE_PAGE_CONTROL_MASK; | |
2375 | if (pc != MODE_SENSE_PC_CURRENT_VALUES) { | |
2376 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2377 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2378 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2379 | goto out; | |
2380 | } | |
2381 | ||
2382 | page_code = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CODE_OFFSET) & | |
2383 | MODE_SENSE_PAGE_CODE_MASK; | |
2384 | switch (page_code) { | |
2385 | case MODE_PAGE_CACHING: | |
2386 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2387 | cdb10, | |
2388 | &nvme_trans_fill_caching_page, | |
2389 | MODE_PAGE_CACHING_LEN); | |
2390 | break; | |
2391 | case MODE_PAGE_CONTROL: | |
2392 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2393 | cdb10, | |
2394 | &nvme_trans_fill_control_page, | |
2395 | MODE_PAGE_CONTROL_LEN); | |
2396 | break; | |
2397 | case MODE_PAGE_POWER_CONDITION: | |
2398 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2399 | cdb10, | |
2400 | &nvme_trans_fill_pow_cnd_page, | |
2401 | MODE_PAGE_POW_CND_LEN); | |
2402 | break; | |
2403 | case MODE_PAGE_INFO_EXCEP: | |
2404 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2405 | cdb10, | |
2406 | &nvme_trans_fill_inf_exc_page, | |
2407 | MODE_PAGE_INF_EXC_LEN); | |
2408 | break; | |
2409 | case MODE_PAGE_RETURN_ALL: | |
2410 | res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, | |
2411 | cdb10, | |
2412 | &nvme_trans_fill_all_pages, | |
2413 | MODE_PAGE_ALL_LEN); | |
2414 | break; | |
2415 | default: | |
2416 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2417 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2418 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2419 | break; | |
2420 | } | |
2421 | ||
2422 | out: | |
2423 | return res; | |
2424 | } | |
2425 | ||
2426 | static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2427 | u8 *cmd) | |
2428 | { | |
2429 | int res = SNTI_TRANSLATION_SUCCESS; | |
2430 | int nvme_sc; | |
2431 | u32 alloc_len = READ_CAP_10_RESP_SIZE; | |
2432 | u32 resp_size = READ_CAP_10_RESP_SIZE; | |
2433 | u32 xfer_len; | |
2434 | u8 cdb16; | |
2435 | struct nvme_dev *dev = ns->dev; | |
2436 | dma_addr_t dma_addr; | |
2437 | void *mem; | |
2438 | struct nvme_id_ns *id_ns; | |
2439 | u8 *response; | |
2440 | ||
2441 | cdb16 = IS_READ_CAP_16(cmd); | |
2442 | if (cdb16) { | |
2443 | alloc_len = GET_READ_CAP_16_ALLOC_LENGTH(cmd); | |
2444 | resp_size = READ_CAP_16_RESP_SIZE; | |
2445 | } | |
2446 | ||
2447 | mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), | |
2448 | &dma_addr, GFP_KERNEL); | |
2449 | if (mem == NULL) { | |
2450 | res = -ENOMEM; | |
2451 | goto out; | |
2452 | } | |
2453 | /* nvme ns identify */ | |
2454 | nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); | |
2455 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2456 | if (res) | |
2457 | goto out_dma; | |
2458 | if (nvme_sc) { | |
2459 | res = nvme_sc; | |
2460 | goto out_dma; | |
2461 | } | |
2462 | id_ns = mem; | |
2463 | ||
2464 | response = kmalloc(resp_size, GFP_KERNEL); | |
2465 | if (response == NULL) { | |
2466 | res = -ENOMEM; | |
2467 | goto out_dma; | |
2468 | } | |
2469 | memset(response, 0, resp_size); | |
2470 | nvme_trans_fill_read_cap(response, id_ns, cdb16); | |
2471 | ||
2472 | xfer_len = min(alloc_len, resp_size); | |
2473 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2474 | ||
2475 | kfree(response); | |
2476 | out_dma: | |
2477 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, | |
2478 | dma_addr); | |
2479 | out: | |
2480 | return res; | |
2481 | } | |
2482 | ||
2483 | static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2484 | u8 *cmd) | |
2485 | { | |
2486 | int res = SNTI_TRANSLATION_SUCCESS; | |
2487 | int nvme_sc; | |
2488 | u32 alloc_len, xfer_len, resp_size; | |
2489 | u8 select_report; | |
2490 | u8 *response; | |
2491 | struct nvme_dev *dev = ns->dev; | |
2492 | dma_addr_t dma_addr; | |
2493 | void *mem; | |
2494 | struct nvme_id_ctrl *id_ctrl; | |
2495 | u32 ll_length, lun_id; | |
2496 | u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET; | |
2497 | u32 tmp_len; | |
2498 | ||
2499 | alloc_len = GET_REPORT_LUNS_ALLOC_LENGTH(cmd); | |
2500 | select_report = GET_U8_FROM_CDB(cmd, REPORT_LUNS_SR_OFFSET); | |
2501 | ||
2502 | if ((select_report != ALL_LUNS_RETURNED) && | |
2503 | (select_report != ALL_WELL_KNOWN_LUNS_RETURNED) && | |
2504 | (select_report != RESTRICTED_LUNS_RETURNED)) { | |
2505 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2506 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2507 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2508 | goto out; | |
2509 | } else { | |
2510 | /* NVMe Controller Identify */ | |
2511 | mem = dma_alloc_coherent(&dev->pci_dev->dev, | |
2512 | sizeof(struct nvme_id_ctrl), | |
2513 | &dma_addr, GFP_KERNEL); | |
2514 | if (mem == NULL) { | |
2515 | res = -ENOMEM; | |
2516 | goto out; | |
2517 | } | |
2518 | nvme_sc = nvme_identify(dev, 0, 1, dma_addr); | |
2519 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2520 | if (res) | |
2521 | goto out_dma; | |
2522 | if (nvme_sc) { | |
2523 | res = nvme_sc; | |
2524 | goto out_dma; | |
2525 | } | |
2526 | id_ctrl = mem; | |
2527 | ll_length = id_ctrl->nn * LUN_ENTRY_SIZE; | |
2528 | resp_size = ll_length + LUN_DATA_HEADER_SIZE; | |
2529 | ||
2530 | if (alloc_len < resp_size) { | |
2531 | res = nvme_trans_completion(hdr, | |
2532 | SAM_STAT_CHECK_CONDITION, | |
2533 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2534 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2535 | goto out_dma; | |
2536 | } | |
2537 | ||
2538 | response = kmalloc(resp_size, GFP_KERNEL); | |
2539 | if (response == NULL) { | |
2540 | res = -ENOMEM; | |
2541 | goto out_dma; | |
2542 | } | |
2543 | memset(response, 0, resp_size); | |
2544 | ||
2545 | /* The first LUN ID will always be 0 per the SAM spec */ | |
2546 | for (lun_id = 0; lun_id < id_ctrl->nn; lun_id++) { | |
2547 | /* | |
2548 | * Set the LUN Id and then increment to the next LUN | |
2549 | * location in the parameter data. | |
2550 | */ | |
2551 | u64 tmp_id = cpu_to_be64(lun_id); | |
2552 | memcpy(&response[lun_id_offset], &tmp_id, sizeof(u64)); | |
2553 | lun_id_offset += LUN_ENTRY_SIZE; | |
2554 | } | |
2555 | tmp_len = cpu_to_be32(ll_length); | |
2556 | memcpy(response, &tmp_len, sizeof(u32)); | |
2557 | } | |
2558 | ||
2559 | xfer_len = min(alloc_len, resp_size); | |
2560 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2561 | ||
2562 | kfree(response); | |
2563 | out_dma: | |
2564 | dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, | |
2565 | dma_addr); | |
2566 | out: | |
2567 | return res; | |
2568 | } | |
2569 | ||
2570 | static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2571 | u8 *cmd) | |
2572 | { | |
2573 | int res = SNTI_TRANSLATION_SUCCESS; | |
2574 | u8 alloc_len, xfer_len, resp_size; | |
2575 | u8 desc_format; | |
2576 | u8 *response; | |
2577 | ||
2578 | alloc_len = GET_REQUEST_SENSE_ALLOC_LENGTH(cmd); | |
2579 | desc_format = GET_U8_FROM_CDB(cmd, REQUEST_SENSE_DESC_OFFSET); | |
2580 | desc_format &= REQUEST_SENSE_DESC_MASK; | |
2581 | ||
2582 | resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) : | |
2583 | (FIXED_FMT_SENSE_DATA_SIZE)); | |
2584 | response = kmalloc(resp_size, GFP_KERNEL); | |
2585 | if (response == NULL) { | |
2586 | res = -ENOMEM; | |
2587 | goto out; | |
2588 | } | |
2589 | memset(response, 0, resp_size); | |
2590 | ||
2591 | if (desc_format == DESCRIPTOR_FORMAT_SENSE_DATA_TYPE) { | |
2592 | /* Descriptor Format Sense Data */ | |
2593 | response[0] = DESC_FORMAT_SENSE_DATA; | |
2594 | response[1] = NO_SENSE; | |
2595 | /* TODO How is LOW POWER CONDITION ON handled? (byte 2) */ | |
2596 | response[2] = SCSI_ASC_NO_SENSE; | |
2597 | response[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
2598 | /* SDAT_OVFL = 0 | Additional Sense Length = 0 */ | |
2599 | } else { | |
2600 | /* Fixed Format Sense Data */ | |
2601 | response[0] = FIXED_SENSE_DATA; | |
2602 | /* Byte 1 = Obsolete */ | |
2603 | response[2] = NO_SENSE; /* FM, EOM, ILI, SDAT_OVFL = 0 */ | |
2604 | /* Bytes 3-6 - Information - set to zero */ | |
2605 | response[7] = FIXED_SENSE_DATA_ADD_LENGTH; | |
2606 | /* Bytes 8-11 - Cmd Specific Information - set to zero */ | |
2607 | response[12] = SCSI_ASC_NO_SENSE; | |
2608 | response[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; | |
2609 | /* Byte 14 = Field Replaceable Unit Code = 0 */ | |
2610 | /* Bytes 15-17 - SKSV=0; Sense Key Specific = 0 */ | |
2611 | } | |
2612 | ||
2613 | xfer_len = min(alloc_len, resp_size); | |
2614 | res = nvme_trans_copy_to_user(hdr, response, xfer_len); | |
2615 | ||
2616 | kfree(response); | |
2617 | out: | |
2618 | return res; | |
2619 | } | |
2620 | ||
2621 | static int nvme_trans_security_protocol(struct nvme_ns *ns, | |
2622 | struct sg_io_hdr *hdr, | |
2623 | u8 *cmd) | |
2624 | { | |
2625 | return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2626 | ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND, | |
2627 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2628 | } | |
2629 | ||
2630 | static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2631 | u8 *cmd) | |
2632 | { | |
2633 | int res = SNTI_TRANSLATION_SUCCESS; | |
2634 | int nvme_sc; | |
2635 | struct nvme_queue *nvmeq = get_nvmeq(ns->dev); | |
2636 | u8 immed, pcmod, pc, no_flush, start; | |
2637 | ||
2638 | immed = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_IMMED_OFFSET); | |
2639 | pcmod = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET); | |
2640 | pc = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_OFFSET); | |
2641 | no_flush = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_NO_FLUSH_OFFSET); | |
2642 | start = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_START_OFFSET); | |
2643 | ||
2644 | immed &= START_STOP_UNIT_CDB_IMMED_MASK; | |
2645 | pcmod &= START_STOP_UNIT_CDB_POWER_COND_MOD_MASK; | |
2646 | pc = (pc & START_STOP_UNIT_CDB_POWER_COND_MASK) >> NIBBLE_SHIFT; | |
2647 | no_flush &= START_STOP_UNIT_CDB_NO_FLUSH_MASK; | |
2648 | start &= START_STOP_UNIT_CDB_START_MASK; | |
2649 | ||
2650 | if (immed != 0) { | |
2651 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2652 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2653 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2654 | } else { | |
2655 | if (no_flush == 0) { | |
2656 | /* Issue NVME FLUSH command prior to START STOP UNIT */ | |
2657 | nvme_sc = nvme_submit_flush_data(nvmeq, ns); | |
2658 | put_nvmeq(nvmeq); | |
2659 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2660 | if (res) | |
2661 | goto out; | |
2662 | if (nvme_sc) { | |
2663 | res = nvme_sc; | |
2664 | goto out; | |
2665 | } | |
2666 | } | |
2667 | /* Setup the expected power state transition */ | |
2668 | res = nvme_trans_power_state(ns, hdr, pc, pcmod, start); | |
2669 | } | |
2670 | ||
2671 | out: | |
2672 | return res; | |
2673 | } | |
2674 | ||
2675 | static int nvme_trans_synchronize_cache(struct nvme_ns *ns, | |
2676 | struct sg_io_hdr *hdr, u8 *cmd) | |
2677 | { | |
2678 | int res = SNTI_TRANSLATION_SUCCESS; | |
2679 | int nvme_sc; | |
2680 | struct nvme_queue *nvmeq = get_nvmeq(ns->dev); | |
2681 | put_nvmeq(nvmeq); | |
2682 | nvme_sc = nvme_submit_flush_data(nvmeq, ns); | |
2683 | res = nvme_trans_status_code(hdr, nvme_sc); | |
2684 | if (res) | |
2685 | goto out; | |
2686 | if (nvme_sc) | |
2687 | res = nvme_sc; | |
2688 | ||
2689 | out: | |
2690 | return res; | |
2691 | } | |
2692 | ||
2693 | static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2694 | u8 *cmd) | |
2695 | { | |
2696 | int res = SNTI_TRANSLATION_SUCCESS; | |
2697 | u8 parm_hdr_len = 0; | |
2698 | u8 nvme_pf_code = 0; | |
2699 | u8 format_prot_info, long_list, format_data; | |
2700 | ||
2701 | format_prot_info = GET_U8_FROM_CDB(cmd, | |
2702 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET); | |
2703 | long_list = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_LONG_LIST_OFFSET); | |
2704 | format_data = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET); | |
2705 | ||
2706 | format_prot_info = (format_prot_info & | |
2707 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK) >> | |
2708 | FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT; | |
2709 | long_list &= FORMAT_UNIT_CDB_LONG_LIST_MASK; | |
2710 | format_data &= FORMAT_UNIT_CDB_FORMAT_DATA_MASK; | |
2711 | ||
2712 | if (format_data != 0) { | |
2713 | if (format_prot_info != 0) { | |
2714 | if (long_list == 0) | |
2715 | parm_hdr_len = FORMAT_UNIT_SHORT_PARM_LIST_LEN; | |
2716 | else | |
2717 | parm_hdr_len = FORMAT_UNIT_LONG_PARM_LIST_LEN; | |
2718 | } | |
2719 | } else if (format_data == 0 && format_prot_info != 0) { | |
2720 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2721 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2722 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2723 | goto out; | |
2724 | } | |
2725 | ||
2726 | /* Get parm header from data-in/out buffer */ | |
2727 | /* | |
2728 | * According to the translation spec, the only fields in the parameter | |
2729 | * list we are concerned with are in the header. So allocate only that. | |
2730 | */ | |
2731 | if (parm_hdr_len > 0) { | |
2732 | res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len, | |
2733 | format_prot_info, &nvme_pf_code); | |
2734 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2735 | goto out; | |
2736 | } | |
2737 | ||
2738 | /* Attempt to activate any previously downloaded firmware image */ | |
2739 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, 0, 0, 0); | |
2740 | ||
2741 | /* Determine Block size and count and send format command */ | |
2742 | res = nvme_trans_fmt_set_blk_size_count(ns, hdr); | |
2743 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2744 | goto out; | |
2745 | ||
2746 | res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code); | |
2747 | ||
2748 | out: | |
2749 | return res; | |
2750 | } | |
2751 | ||
2752 | static int nvme_trans_test_unit_ready(struct nvme_ns *ns, | |
2753 | struct sg_io_hdr *hdr, | |
2754 | u8 *cmd) | |
2755 | { | |
2756 | int res = SNTI_TRANSLATION_SUCCESS; | |
2757 | struct nvme_dev *dev = ns->dev; | |
2758 | ||
2759 | if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY)) | |
2760 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2761 | NOT_READY, SCSI_ASC_LUN_NOT_READY, | |
2762 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2763 | else | |
2764 | res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0); | |
2765 | ||
2766 | return res; | |
2767 | } | |
2768 | ||
2769 | static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr, | |
2770 | u8 *cmd) | |
2771 | { | |
2772 | int res = SNTI_TRANSLATION_SUCCESS; | |
2773 | u32 buffer_offset, parm_list_length; | |
2774 | u8 buffer_id, mode; | |
2775 | ||
2776 | parm_list_length = | |
2777 | GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET); | |
2778 | if (parm_list_length % BYTES_TO_DWORDS != 0) { | |
2779 | /* NVMe expects Firmware file to be a whole number of DWORDS */ | |
2780 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2781 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2782 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2783 | goto out; | |
2784 | } | |
2785 | buffer_id = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_ID_OFFSET); | |
2786 | if (buffer_id > NVME_MAX_FIRMWARE_SLOT) { | |
2787 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2788 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2789 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2790 | goto out; | |
2791 | } | |
2792 | mode = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_MODE_OFFSET) & | |
2793 | WRITE_BUFFER_CDB_MODE_MASK; | |
2794 | buffer_offset = | |
2795 | GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET); | |
2796 | ||
2797 | switch (mode) { | |
2798 | case DOWNLOAD_SAVE_ACTIVATE: | |
2799 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, | |
2800 | parm_list_length, buffer_offset, | |
2801 | buffer_id); | |
2802 | if (res != SNTI_TRANSLATION_SUCCESS) | |
2803 | goto out; | |
2804 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, | |
2805 | parm_list_length, buffer_offset, | |
2806 | buffer_id); | |
2807 | break; | |
2808 | case DOWNLOAD_SAVE_DEFER_ACTIVATE: | |
2809 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, | |
2810 | parm_list_length, buffer_offset, | |
2811 | buffer_id); | |
2812 | break; | |
2813 | case ACTIVATE_DEFERRED_MICROCODE: | |
2814 | res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, | |
2815 | parm_list_length, buffer_offset, | |
2816 | buffer_id); | |
2817 | break; | |
2818 | default: | |
2819 | res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2820 | ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, | |
2821 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2822 | break; | |
2823 | } | |
2824 | ||
2825 | out: | |
2826 | return res; | |
2827 | } | |
2828 | ||
2829 | static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr) | |
2830 | { | |
2831 | u8 cmd[BLK_MAX_CDB]; | |
2832 | int retcode; | |
2833 | unsigned int opcode; | |
2834 | ||
2835 | if (hdr->cmdp == NULL) | |
2836 | return -EMSGSIZE; | |
2837 | if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len)) | |
2838 | return -EFAULT; | |
2839 | ||
2840 | opcode = cmd[0]; | |
2841 | ||
2842 | switch (opcode) { | |
2843 | case READ_6: | |
2844 | case READ_10: | |
2845 | case READ_12: | |
2846 | case READ_16: | |
2847 | retcode = nvme_trans_io(ns, hdr, 0, cmd); | |
2848 | break; | |
2849 | case WRITE_6: | |
2850 | case WRITE_10: | |
2851 | case WRITE_12: | |
2852 | case WRITE_16: | |
2853 | retcode = nvme_trans_io(ns, hdr, 1, cmd); | |
2854 | break; | |
2855 | case INQUIRY: | |
2856 | retcode = nvme_trans_inquiry(ns, hdr, cmd); | |
2857 | break; | |
2858 | case LOG_SENSE: | |
2859 | retcode = nvme_trans_log_sense(ns, hdr, cmd); | |
2860 | break; | |
2861 | case MODE_SELECT: | |
2862 | case MODE_SELECT_10: | |
2863 | retcode = nvme_trans_mode_select(ns, hdr, cmd); | |
2864 | break; | |
2865 | case MODE_SENSE: | |
2866 | case MODE_SENSE_10: | |
2867 | retcode = nvme_trans_mode_sense(ns, hdr, cmd); | |
2868 | break; | |
2869 | case READ_CAPACITY: | |
2870 | retcode = nvme_trans_read_capacity(ns, hdr, cmd); | |
2871 | break; | |
2872 | case SERVICE_ACTION_IN: | |
2873 | if (IS_READ_CAP_16(cmd)) | |
2874 | retcode = nvme_trans_read_capacity(ns, hdr, cmd); | |
2875 | else | |
2876 | goto out; | |
2877 | break; | |
2878 | case REPORT_LUNS: | |
2879 | retcode = nvme_trans_report_luns(ns, hdr, cmd); | |
2880 | break; | |
2881 | case REQUEST_SENSE: | |
2882 | retcode = nvme_trans_request_sense(ns, hdr, cmd); | |
2883 | break; | |
2884 | case SECURITY_PROTOCOL_IN: | |
2885 | case SECURITY_PROTOCOL_OUT: | |
2886 | retcode = nvme_trans_security_protocol(ns, hdr, cmd); | |
2887 | break; | |
2888 | case START_STOP: | |
2889 | retcode = nvme_trans_start_stop(ns, hdr, cmd); | |
2890 | break; | |
2891 | case SYNCHRONIZE_CACHE: | |
2892 | retcode = nvme_trans_synchronize_cache(ns, hdr, cmd); | |
2893 | break; | |
2894 | case FORMAT_UNIT: | |
2895 | retcode = nvme_trans_format_unit(ns, hdr, cmd); | |
2896 | break; | |
2897 | case TEST_UNIT_READY: | |
2898 | retcode = nvme_trans_test_unit_ready(ns, hdr, cmd); | |
2899 | break; | |
2900 | case WRITE_BUFFER: | |
2901 | retcode = nvme_trans_write_buffer(ns, hdr, cmd); | |
2902 | break; | |
2903 | default: | |
2904 | out: | |
2905 | retcode = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, | |
2906 | ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND, | |
2907 | SCSI_ASCQ_CAUSE_NOT_REPORTABLE); | |
2908 | break; | |
2909 | } | |
2910 | return retcode; | |
2911 | } | |
2912 | ||
2913 | int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr) | |
2914 | { | |
2915 | struct sg_io_hdr hdr; | |
2916 | int retcode; | |
2917 | ||
2918 | if (!capable(CAP_SYS_ADMIN)) | |
2919 | return -EACCES; | |
2920 | if (copy_from_user(&hdr, u_hdr, sizeof(hdr))) | |
2921 | return -EFAULT; | |
2922 | if (hdr.interface_id != 'S') | |
2923 | return -EINVAL; | |
2924 | if (hdr.cmd_len > BLK_MAX_CDB) | |
2925 | return -EINVAL; | |
2926 | ||
2927 | retcode = nvme_scsi_translate(ns, &hdr); | |
2928 | if (retcode < 0) | |
2929 | return retcode; | |
2930 | if (retcode > 0) | |
2931 | retcode = SNTI_TRANSLATION_SUCCESS; | |
2932 | if (copy_to_user(__user u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0) | |
2933 | return -EFAULT; | |
2934 | ||
2935 | return retcode; | |
2936 | } | |
2937 | ||
2938 | int nvme_sg_get_version_num(int __user *ip) | |
2939 | { | |
2940 | return put_user(sg_version_num, ip); | |
2941 | } |