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ca064085 MB |
1 | /* |
2 | * nvme-lightnvm.c - LightNVM NVMe device | |
3 | * | |
4 | * Copyright (C) 2014-2015 IT University of Copenhagen | |
5 | * Initial release: Matias Bjorling <mb@lightnvm.io> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License version | |
9 | * 2 as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; see the file COPYING. If not, write to | |
18 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, | |
19 | * USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include "nvme.h" | |
24 | ||
ca064085 MB |
25 | #include <linux/nvme.h> |
26 | #include <linux/bitops.h> | |
27 | #include <linux/lightnvm.h> | |
28 | #include <linux/vmalloc.h> | |
29 | ||
30 | enum nvme_nvm_admin_opcode { | |
31 | nvme_nvm_admin_identity = 0xe2, | |
32 | nvme_nvm_admin_get_l2p_tbl = 0xea, | |
33 | nvme_nvm_admin_get_bb_tbl = 0xf2, | |
34 | nvme_nvm_admin_set_bb_tbl = 0xf1, | |
35 | }; | |
36 | ||
37 | struct nvme_nvm_hb_rw { | |
38 | __u8 opcode; | |
39 | __u8 flags; | |
40 | __u16 command_id; | |
41 | __le32 nsid; | |
42 | __u64 rsvd2; | |
43 | __le64 metadata; | |
44 | __le64 prp1; | |
45 | __le64 prp2; | |
46 | __le64 spba; | |
47 | __le16 length; | |
48 | __le16 control; | |
49 | __le32 dsmgmt; | |
50 | __le64 slba; | |
51 | }; | |
52 | ||
53 | struct nvme_nvm_ph_rw { | |
54 | __u8 opcode; | |
55 | __u8 flags; | |
56 | __u16 command_id; | |
57 | __le32 nsid; | |
58 | __u64 rsvd2; | |
59 | __le64 metadata; | |
60 | __le64 prp1; | |
61 | __le64 prp2; | |
62 | __le64 spba; | |
63 | __le16 length; | |
64 | __le16 control; | |
65 | __le32 dsmgmt; | |
66 | __le64 resv; | |
67 | }; | |
68 | ||
69 | struct nvme_nvm_identity { | |
70 | __u8 opcode; | |
71 | __u8 flags; | |
72 | __u16 command_id; | |
73 | __le32 nsid; | |
74 | __u64 rsvd[2]; | |
75 | __le64 prp1; | |
76 | __le64 prp2; | |
77 | __le32 chnl_off; | |
78 | __u32 rsvd11[5]; | |
79 | }; | |
80 | ||
81 | struct nvme_nvm_l2ptbl { | |
82 | __u8 opcode; | |
83 | __u8 flags; | |
84 | __u16 command_id; | |
85 | __le32 nsid; | |
86 | __le32 cdw2[4]; | |
87 | __le64 prp1; | |
88 | __le64 prp2; | |
89 | __le64 slba; | |
90 | __le32 nlb; | |
91 | __le16 cdw14[6]; | |
92 | }; | |
93 | ||
11450469 | 94 | struct nvme_nvm_getbbtbl { |
ca064085 MB |
95 | __u8 opcode; |
96 | __u8 flags; | |
97 | __u16 command_id; | |
98 | __le32 nsid; | |
99 | __u64 rsvd[2]; | |
100 | __le64 prp1; | |
101 | __le64 prp2; | |
11450469 MB |
102 | __le64 spba; |
103 | __u32 rsvd4[4]; | |
104 | }; | |
105 | ||
106 | struct nvme_nvm_setbbtbl { | |
107 | __u8 opcode; | |
108 | __u8 flags; | |
109 | __u16 command_id; | |
110 | __le32 nsid; | |
111 | __le64 rsvd[2]; | |
112 | __le64 prp1; | |
113 | __le64 prp2; | |
114 | __le64 spba; | |
115 | __le16 nlb; | |
116 | __u8 value; | |
117 | __u8 rsvd3; | |
118 | __u32 rsvd4[3]; | |
ca064085 MB |
119 | }; |
120 | ||
121 | struct nvme_nvm_erase_blk { | |
122 | __u8 opcode; | |
123 | __u8 flags; | |
124 | __u16 command_id; | |
125 | __le32 nsid; | |
126 | __u64 rsvd[2]; | |
127 | __le64 prp1; | |
128 | __le64 prp2; | |
129 | __le64 spba; | |
130 | __le16 length; | |
131 | __le16 control; | |
132 | __le32 dsmgmt; | |
133 | __le64 resv; | |
134 | }; | |
135 | ||
136 | struct nvme_nvm_command { | |
137 | union { | |
138 | struct nvme_common_command common; | |
139 | struct nvme_nvm_identity identity; | |
140 | struct nvme_nvm_hb_rw hb_rw; | |
141 | struct nvme_nvm_ph_rw ph_rw; | |
142 | struct nvme_nvm_l2ptbl l2p; | |
11450469 MB |
143 | struct nvme_nvm_getbbtbl get_bb; |
144 | struct nvme_nvm_setbbtbl set_bb; | |
ca064085 MB |
145 | struct nvme_nvm_erase_blk erase; |
146 | }; | |
147 | }; | |
148 | ||
9f867268 MB |
149 | struct nvme_nvm_completion { |
150 | __le64 result; /* Used by LightNVM to return ppa completions */ | |
151 | __le16 sq_head; /* how much of this queue may be reclaimed */ | |
152 | __le16 sq_id; /* submission queue that generated this entry */ | |
153 | __u16 command_id; /* of the command which completed */ | |
154 | __le16 status; /* did the command fail, and if so, why? */ | |
155 | }; | |
156 | ||
6dde1d6c | 157 | #define NVME_NVM_LP_MLC_PAIRS 886 |
ca5927e7 MB |
158 | struct nvme_nvm_lp_mlc { |
159 | __u16 num_pairs; | |
6dde1d6c | 160 | __u8 pairs[NVME_NVM_LP_MLC_PAIRS]; |
ca5927e7 MB |
161 | }; |
162 | ||
163 | struct nvme_nvm_lp_tbl { | |
164 | __u8 id[8]; | |
165 | struct nvme_nvm_lp_mlc mlc; | |
166 | }; | |
167 | ||
ca064085 MB |
168 | struct nvme_nvm_id_group { |
169 | __u8 mtype; | |
170 | __u8 fmtype; | |
171 | __le16 res16; | |
172 | __u8 num_ch; | |
173 | __u8 num_lun; | |
174 | __u8 num_pln; | |
36d5dbc6 | 175 | __u8 rsvd1; |
ca064085 MB |
176 | __le16 num_blk; |
177 | __le16 num_pg; | |
178 | __le16 fpg_sz; | |
179 | __le16 csecs; | |
180 | __le16 sos; | |
36d5dbc6 | 181 | __le16 rsvd2; |
ca064085 MB |
182 | __le32 trdt; |
183 | __le32 trdm; | |
184 | __le32 tprt; | |
185 | __le32 tprm; | |
186 | __le32 tbet; | |
187 | __le32 tbem; | |
188 | __le32 mpos; | |
12be5edf | 189 | __le32 mccap; |
ca064085 | 190 | __le16 cpar; |
ca5927e7 MB |
191 | __u8 reserved[10]; |
192 | struct nvme_nvm_lp_tbl lptbl; | |
ca064085 MB |
193 | } __packed; |
194 | ||
195 | struct nvme_nvm_addr_format { | |
196 | __u8 ch_offset; | |
197 | __u8 ch_len; | |
198 | __u8 lun_offset; | |
199 | __u8 lun_len; | |
200 | __u8 pln_offset; | |
201 | __u8 pln_len; | |
202 | __u8 blk_offset; | |
203 | __u8 blk_len; | |
204 | __u8 pg_offset; | |
205 | __u8 pg_len; | |
206 | __u8 sect_offset; | |
207 | __u8 sect_len; | |
208 | __u8 res[4]; | |
209 | } __packed; | |
210 | ||
211 | struct nvme_nvm_id { | |
212 | __u8 ver_id; | |
213 | __u8 vmnt; | |
214 | __u8 cgrps; | |
dad1b009 | 215 | __u8 res; |
ca064085 MB |
216 | __le32 cap; |
217 | __le32 dom; | |
218 | struct nvme_nvm_addr_format ppaf; | |
dad1b009 | 219 | __u8 resv[228]; |
ca064085 MB |
220 | struct nvme_nvm_id_group groups[4]; |
221 | } __packed; | |
222 | ||
11450469 MB |
223 | struct nvme_nvm_bb_tbl { |
224 | __u8 tblid[4]; | |
225 | __le16 verid; | |
226 | __le16 revid; | |
227 | __le32 rvsd1; | |
228 | __le32 tblks; | |
229 | __le32 tfact; | |
230 | __le32 tgrown; | |
231 | __le32 tdresv; | |
232 | __le32 thresv; | |
233 | __le32 rsvd2[8]; | |
234 | __u8 blk[0]; | |
235 | }; | |
236 | ||
ca064085 MB |
237 | /* |
238 | * Check we didn't inadvertently grow the command struct | |
239 | */ | |
240 | static inline void _nvme_nvm_check_size(void) | |
241 | { | |
242 | BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64); | |
243 | BUILD_BUG_ON(sizeof(struct nvme_nvm_hb_rw) != 64); | |
244 | BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64); | |
11450469 MB |
245 | BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64); |
246 | BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64); | |
ca064085 MB |
247 | BUILD_BUG_ON(sizeof(struct nvme_nvm_l2ptbl) != 64); |
248 | BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64); | |
249 | BUILD_BUG_ON(sizeof(struct nvme_nvm_id_group) != 960); | |
250 | BUILD_BUG_ON(sizeof(struct nvme_nvm_addr_format) != 128); | |
251 | BUILD_BUG_ON(sizeof(struct nvme_nvm_id) != 4096); | |
11450469 | 252 | BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 512); |
ca064085 MB |
253 | } |
254 | ||
255 | static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id) | |
256 | { | |
257 | struct nvme_nvm_id_group *src; | |
258 | struct nvm_id_group *dst; | |
259 | int i, end; | |
260 | ||
261 | end = min_t(u32, 4, nvm_id->cgrps); | |
262 | ||
263 | for (i = 0; i < end; i++) { | |
264 | src = &nvme_nvm_id->groups[i]; | |
265 | dst = &nvm_id->groups[i]; | |
266 | ||
267 | dst->mtype = src->mtype; | |
268 | dst->fmtype = src->fmtype; | |
269 | dst->num_ch = src->num_ch; | |
270 | dst->num_lun = src->num_lun; | |
271 | dst->num_pln = src->num_pln; | |
272 | ||
273 | dst->num_pg = le16_to_cpu(src->num_pg); | |
274 | dst->num_blk = le16_to_cpu(src->num_blk); | |
275 | dst->fpg_sz = le16_to_cpu(src->fpg_sz); | |
276 | dst->csecs = le16_to_cpu(src->csecs); | |
277 | dst->sos = le16_to_cpu(src->sos); | |
278 | ||
279 | dst->trdt = le32_to_cpu(src->trdt); | |
280 | dst->trdm = le32_to_cpu(src->trdm); | |
281 | dst->tprt = le32_to_cpu(src->tprt); | |
282 | dst->tprm = le32_to_cpu(src->tprm); | |
283 | dst->tbet = le32_to_cpu(src->tbet); | |
284 | dst->tbem = le32_to_cpu(src->tbem); | |
285 | dst->mpos = le32_to_cpu(src->mpos); | |
12be5edf | 286 | dst->mccap = le32_to_cpu(src->mccap); |
ca064085 MB |
287 | |
288 | dst->cpar = le16_to_cpu(src->cpar); | |
ca5927e7 MB |
289 | |
290 | if (dst->fmtype == NVM_ID_FMTYPE_MLC) { | |
291 | memcpy(dst->lptbl.id, src->lptbl.id, 8); | |
292 | dst->lptbl.mlc.num_pairs = | |
293 | le16_to_cpu(src->lptbl.mlc.num_pairs); | |
6dde1d6c MB |
294 | |
295 | if (dst->lptbl.mlc.num_pairs > NVME_NVM_LP_MLC_PAIRS) { | |
296 | pr_err("nvm: number of MLC pairs not supported\n"); | |
297 | return -EINVAL; | |
298 | } | |
299 | ||
ca5927e7 | 300 | memcpy(dst->lptbl.mlc.pairs, src->lptbl.mlc.pairs, |
6dde1d6c | 301 | dst->lptbl.mlc.num_pairs); |
ca5927e7 | 302 | } |
ca064085 MB |
303 | } |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
16f26c3a | 308 | static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id) |
ca064085 | 309 | { |
16f26c3a | 310 | struct nvme_ns *ns = nvmdev->q->queuedata; |
ca064085 MB |
311 | struct nvme_nvm_id *nvme_nvm_id; |
312 | struct nvme_nvm_command c = {}; | |
313 | int ret; | |
314 | ||
315 | c.identity.opcode = nvme_nvm_admin_identity; | |
316 | c.identity.nsid = cpu_to_le32(ns->ns_id); | |
317 | c.identity.chnl_off = 0; | |
318 | ||
319 | nvme_nvm_id = kmalloc(sizeof(struct nvme_nvm_id), GFP_KERNEL); | |
320 | if (!nvme_nvm_id) | |
321 | return -ENOMEM; | |
322 | ||
ac02ddde | 323 | ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
47b3115a | 324 | nvme_nvm_id, sizeof(struct nvme_nvm_id)); |
ca064085 MB |
325 | if (ret) { |
326 | ret = -EIO; | |
327 | goto out; | |
328 | } | |
329 | ||
330 | nvm_id->ver_id = nvme_nvm_id->ver_id; | |
331 | nvm_id->vmnt = nvme_nvm_id->vmnt; | |
332 | nvm_id->cgrps = nvme_nvm_id->cgrps; | |
333 | nvm_id->cap = le32_to_cpu(nvme_nvm_id->cap); | |
334 | nvm_id->dom = le32_to_cpu(nvme_nvm_id->dom); | |
2393bd39 MB |
335 | memcpy(&nvm_id->ppaf, &nvme_nvm_id->ppaf, |
336 | sizeof(struct nvme_nvm_addr_format)); | |
ca064085 MB |
337 | |
338 | ret = init_grps(nvm_id, nvme_nvm_id); | |
339 | out: | |
340 | kfree(nvme_nvm_id); | |
341 | return ret; | |
342 | } | |
343 | ||
16f26c3a | 344 | static int nvme_nvm_get_l2p_tbl(struct nvm_dev *nvmdev, u64 slba, u32 nlb, |
ca064085 MB |
345 | nvm_l2p_update_fn *update_l2p, void *priv) |
346 | { | |
16f26c3a | 347 | struct nvme_ns *ns = nvmdev->q->queuedata; |
ca064085 | 348 | struct nvme_nvm_command c = {}; |
ac02ddde | 349 | u32 len = queue_max_hw_sectors(ns->ctrl->admin_q) << 9; |
5f436e5e | 350 | u32 nlb_pr_rq = len / sizeof(u64); |
ca064085 MB |
351 | u64 cmd_slba = slba; |
352 | void *entries; | |
353 | int ret = 0; | |
354 | ||
355 | c.l2p.opcode = nvme_nvm_admin_get_l2p_tbl; | |
356 | c.l2p.nsid = cpu_to_le32(ns->ns_id); | |
357 | entries = kmalloc(len, GFP_KERNEL); | |
358 | if (!entries) | |
359 | return -ENOMEM; | |
360 | ||
361 | while (nlb) { | |
5f436e5e | 362 | u32 cmd_nlb = min(nlb_pr_rq, nlb); |
ca064085 MB |
363 | |
364 | c.l2p.slba = cpu_to_le64(cmd_slba); | |
365 | c.l2p.nlb = cpu_to_le32(cmd_nlb); | |
366 | ||
ac02ddde | 367 | ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, |
47b3115a | 368 | (struct nvme_command *)&c, entries, len); |
ca064085 | 369 | if (ret) { |
ac02ddde | 370 | dev_err(ns->ctrl->dev, "L2P table transfer failed (%d)\n", |
ca064085 MB |
371 | ret); |
372 | ret = -EIO; | |
373 | goto out; | |
374 | } | |
375 | ||
376 | if (update_l2p(cmd_slba, cmd_nlb, entries, priv)) { | |
377 | ret = -EINTR; | |
378 | goto out; | |
379 | } | |
380 | ||
381 | cmd_slba += cmd_nlb; | |
382 | nlb -= cmd_nlb; | |
383 | } | |
384 | ||
385 | out: | |
386 | kfree(entries); | |
387 | return ret; | |
388 | } | |
389 | ||
d5bdec8d MB |
390 | static void nvme_nvm_bb_tbl_fold(struct nvm_dev *nvmdev, |
391 | int nr_dst_blks, u8 *dst_blks, | |
392 | int nr_src_blks, u8 *src_blks) | |
393 | { | |
394 | int blk, offset, pl, blktype; | |
395 | ||
396 | for (blk = 0; blk < nr_dst_blks; blk++) { | |
397 | offset = blk * nvmdev->plane_mode; | |
398 | blktype = src_blks[offset]; | |
399 | ||
400 | /* Bad blocks on any planes take precedence over other types */ | |
401 | for (pl = 0; pl < nvmdev->plane_mode; pl++) { | |
402 | if (src_blks[offset + pl] & | |
403 | (NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) { | |
404 | blktype = src_blks[offset + pl]; | |
405 | break; | |
406 | } | |
407 | } | |
408 | ||
409 | dst_blks[blk] = blktype; | |
410 | } | |
411 | } | |
412 | ||
08236c6b | 413 | static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa, |
d5bdec8d | 414 | int nr_dst_blks, nvm_bb_update_fn *update_bbtbl, |
11450469 | 415 | void *priv) |
ca064085 | 416 | { |
08236c6b | 417 | struct request_queue *q = nvmdev->q; |
ca064085 | 418 | struct nvme_ns *ns = q->queuedata; |
ac02ddde | 419 | struct nvme_ctrl *ctrl = ns->ctrl; |
ca064085 | 420 | struct nvme_nvm_command c = {}; |
11450469 | 421 | struct nvme_nvm_bb_tbl *bb_tbl; |
d5bdec8d MB |
422 | u8 *dst_blks = NULL; |
423 | int nr_src_blks = nr_dst_blks * nvmdev->plane_mode; | |
424 | int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_src_blks; | |
ca064085 MB |
425 | int ret = 0; |
426 | ||
427 | c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl; | |
428 | c.get_bb.nsid = cpu_to_le32(ns->ns_id); | |
11450469 | 429 | c.get_bb.spba = cpu_to_le64(ppa.ppa); |
ca064085 | 430 | |
11450469 MB |
431 | bb_tbl = kzalloc(tblsz, GFP_KERNEL); |
432 | if (!bb_tbl) | |
433 | return -ENOMEM; | |
ca064085 | 434 | |
d5bdec8d MB |
435 | dst_blks = kzalloc(nr_dst_blks, GFP_KERNEL); |
436 | if (!dst_blks) { | |
437 | ret = -ENOMEM; | |
438 | goto out; | |
439 | } | |
440 | ||
ac02ddde | 441 | ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c, |
47b3115a | 442 | bb_tbl, tblsz); |
ca064085 | 443 | if (ret) { |
ac02ddde | 444 | dev_err(ctrl->dev, "get bad block table failed (%d)\n", ret); |
ca064085 MB |
445 | ret = -EIO; |
446 | goto out; | |
447 | } | |
448 | ||
11450469 MB |
449 | if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' || |
450 | bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') { | |
ac02ddde | 451 | dev_err(ctrl->dev, "bbt format mismatch\n"); |
11450469 MB |
452 | ret = -EINVAL; |
453 | goto out; | |
454 | } | |
455 | ||
456 | if (le16_to_cpu(bb_tbl->verid) != 1) { | |
457 | ret = -EINVAL; | |
ac02ddde | 458 | dev_err(ctrl->dev, "bbt version not supported\n"); |
11450469 MB |
459 | goto out; |
460 | } | |
461 | ||
d5bdec8d | 462 | if (le32_to_cpu(bb_tbl->tblks) != nr_src_blks) { |
11450469 | 463 | ret = -EINVAL; |
ac02ddde | 464 | dev_err(ctrl->dev, "bbt unsuspected blocks returned (%u!=%u)", |
d5bdec8d | 465 | le32_to_cpu(bb_tbl->tblks), nr_src_blks); |
11450469 MB |
466 | goto out; |
467 | } | |
468 | ||
d5bdec8d MB |
469 | nvme_nvm_bb_tbl_fold(nvmdev, nr_dst_blks, dst_blks, |
470 | nr_src_blks, bb_tbl->blk); | |
471 | ||
08236c6b | 472 | ppa = dev_to_generic_addr(nvmdev, ppa); |
d5bdec8d MB |
473 | ret = update_bbtbl(ppa, nr_dst_blks, dst_blks, priv); |
474 | ||
ca064085 | 475 | out: |
d5bdec8d | 476 | kfree(dst_blks); |
11450469 MB |
477 | kfree(bb_tbl); |
478 | return ret; | |
479 | } | |
480 | ||
16f26c3a | 481 | static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct nvm_rq *rqd, |
11450469 MB |
482 | int type) |
483 | { | |
16f26c3a | 484 | struct nvme_ns *ns = nvmdev->q->queuedata; |
11450469 MB |
485 | struct nvme_nvm_command c = {}; |
486 | int ret = 0; | |
487 | ||
488 | c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl; | |
489 | c.set_bb.nsid = cpu_to_le32(ns->ns_id); | |
490 | c.set_bb.spba = cpu_to_le64(rqd->ppa_addr.ppa); | |
491 | c.set_bb.nlb = cpu_to_le16(rqd->nr_pages - 1); | |
492 | c.set_bb.value = type; | |
493 | ||
ac02ddde | 494 | ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
47b3115a | 495 | NULL, 0); |
11450469 | 496 | if (ret) |
ac02ddde | 497 | dev_err(ns->ctrl->dev, "set bad block table failed (%d)\n", ret); |
ca064085 MB |
498 | return ret; |
499 | } | |
500 | ||
501 | static inline void nvme_nvm_rqtocmd(struct request *rq, struct nvm_rq *rqd, | |
502 | struct nvme_ns *ns, struct nvme_nvm_command *c) | |
503 | { | |
504 | c->ph_rw.opcode = rqd->opcode; | |
505 | c->ph_rw.nsid = cpu_to_le32(ns->ns_id); | |
506 | c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa); | |
507 | c->ph_rw.control = cpu_to_le16(rqd->flags); | |
508 | c->ph_rw.length = cpu_to_le16(rqd->nr_pages - 1); | |
509 | ||
510 | if (rqd->opcode == NVM_OP_HBWRITE || rqd->opcode == NVM_OP_HBREAD) | |
511 | c->hb_rw.slba = cpu_to_le64(nvme_block_nr(ns, | |
512 | rqd->bio->bi_iter.bi_sector)); | |
513 | } | |
514 | ||
515 | static void nvme_nvm_end_io(struct request *rq, int error) | |
516 | { | |
517 | struct nvm_rq *rqd = rq->end_io_data; | |
9f867268 MB |
518 | struct nvme_nvm_completion *cqe = rq->special; |
519 | ||
520 | if (cqe) | |
521 | rqd->ppa_status = le64_to_cpu(cqe->result); | |
ca064085 | 522 | |
91276162 | 523 | nvm_end_io(rqd, error); |
ca064085 MB |
524 | |
525 | kfree(rq->cmd); | |
526 | blk_mq_free_request(rq); | |
527 | } | |
528 | ||
16f26c3a | 529 | static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) |
ca064085 | 530 | { |
16f26c3a | 531 | struct request_queue *q = dev->q; |
ca064085 MB |
532 | struct nvme_ns *ns = q->queuedata; |
533 | struct request *rq; | |
534 | struct bio *bio = rqd->bio; | |
535 | struct nvme_nvm_command *cmd; | |
536 | ||
6f3b0e8b | 537 | rq = blk_mq_alloc_request(q, bio_rw(bio), 0); |
ca064085 MB |
538 | if (IS_ERR(rq)) |
539 | return -ENOMEM; | |
540 | ||
9f867268 MB |
541 | cmd = kzalloc(sizeof(struct nvme_nvm_command) + |
542 | sizeof(struct nvme_nvm_completion), GFP_KERNEL); | |
ca064085 MB |
543 | if (!cmd) { |
544 | blk_mq_free_request(rq); | |
545 | return -ENOMEM; | |
546 | } | |
547 | ||
548 | rq->cmd_type = REQ_TYPE_DRV_PRIV; | |
549 | rq->ioprio = bio_prio(bio); | |
550 | ||
551 | if (bio_has_data(bio)) | |
552 | rq->nr_phys_segments = bio_phys_segments(q, bio); | |
553 | ||
554 | rq->__data_len = bio->bi_iter.bi_size; | |
555 | rq->bio = rq->biotail = bio; | |
556 | ||
557 | nvme_nvm_rqtocmd(rq, rqd, ns, cmd); | |
558 | ||
559 | rq->cmd = (unsigned char *)cmd; | |
560 | rq->cmd_len = sizeof(struct nvme_nvm_command); | |
9f867268 | 561 | rq->special = cmd + 1; |
ca064085 MB |
562 | |
563 | rq->end_io_data = rqd; | |
564 | ||
565 | blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
16f26c3a | 570 | static int nvme_nvm_erase_block(struct nvm_dev *dev, struct nvm_rq *rqd) |
ca064085 | 571 | { |
16f26c3a | 572 | struct request_queue *q = dev->q; |
ca064085 MB |
573 | struct nvme_ns *ns = q->queuedata; |
574 | struct nvme_nvm_command c = {}; | |
575 | ||
576 | c.erase.opcode = NVM_OP_ERASE; | |
577 | c.erase.nsid = cpu_to_le32(ns->ns_id); | |
578 | c.erase.spba = cpu_to_le64(rqd->ppa_addr.ppa); | |
579 | c.erase.length = cpu_to_le16(rqd->nr_pages - 1); | |
580 | ||
581 | return nvme_submit_sync_cmd(q, (struct nvme_command *)&c, NULL, 0); | |
582 | } | |
583 | ||
16f26c3a | 584 | static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name) |
ca064085 | 585 | { |
16f26c3a | 586 | struct nvme_ns *ns = nvmdev->q->queuedata; |
ca064085 | 587 | |
ac02ddde | 588 | return dma_pool_create(name, ns->ctrl->dev, PAGE_SIZE, PAGE_SIZE, 0); |
ca064085 MB |
589 | } |
590 | ||
591 | static void nvme_nvm_destroy_dma_pool(void *pool) | |
592 | { | |
593 | struct dma_pool *dma_pool = pool; | |
594 | ||
595 | dma_pool_destroy(dma_pool); | |
596 | } | |
597 | ||
16f26c3a | 598 | static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool, |
ca064085 MB |
599 | gfp_t mem_flags, dma_addr_t *dma_handler) |
600 | { | |
601 | return dma_pool_alloc(pool, mem_flags, dma_handler); | |
602 | } | |
603 | ||
604 | static void nvme_nvm_dev_dma_free(void *pool, void *ppa_list, | |
605 | dma_addr_t dma_handler) | |
606 | { | |
607 | dma_pool_free(pool, ppa_list, dma_handler); | |
608 | } | |
609 | ||
610 | static struct nvm_dev_ops nvme_nvm_dev_ops = { | |
611 | .identity = nvme_nvm_identity, | |
612 | ||
613 | .get_l2p_tbl = nvme_nvm_get_l2p_tbl, | |
614 | ||
615 | .get_bb_tbl = nvme_nvm_get_bb_tbl, | |
11450469 | 616 | .set_bb_tbl = nvme_nvm_set_bb_tbl, |
ca064085 MB |
617 | |
618 | .submit_io = nvme_nvm_submit_io, | |
619 | .erase_block = nvme_nvm_erase_block, | |
620 | ||
621 | .create_dma_pool = nvme_nvm_create_dma_pool, | |
622 | .destroy_dma_pool = nvme_nvm_destroy_dma_pool, | |
623 | .dev_dma_alloc = nvme_nvm_dev_dma_alloc, | |
624 | .dev_dma_free = nvme_nvm_dev_dma_free, | |
625 | ||
626 | .max_phys_sect = 64, | |
627 | }; | |
628 | ||
629 | int nvme_nvm_register(struct request_queue *q, char *disk_name) | |
630 | { | |
631 | return nvm_register(q, disk_name, &nvme_nvm_dev_ops); | |
632 | } | |
633 | ||
634 | void nvme_nvm_unregister(struct request_queue *q, char *disk_name) | |
635 | { | |
636 | nvm_unregister(disk_name); | |
637 | } | |
638 | ||
09f2e716 MB |
639 | /* move to shared place when used in multiple places. */ |
640 | #define PCI_VENDOR_ID_CNEX 0x1d1d | |
641 | #define PCI_DEVICE_ID_CNEX_WL 0x2807 | |
642 | #define PCI_DEVICE_ID_CNEX_QEMU 0x1f1f | |
643 | ||
ca064085 MB |
644 | int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id) |
645 | { | |
ac02ddde CH |
646 | struct nvme_ctrl *ctrl = ns->ctrl; |
647 | /* XXX: this is poking into PCI structures from generic code! */ | |
648 | struct pci_dev *pdev = to_pci_dev(ctrl->dev); | |
ca064085 MB |
649 | |
650 | /* QEMU NVMe simulator - PCI ID + Vendor specific bit */ | |
09f2e716 MB |
651 | if (pdev->vendor == PCI_VENDOR_ID_CNEX && |
652 | pdev->device == PCI_DEVICE_ID_CNEX_QEMU && | |
ca064085 MB |
653 | id->vs[0] == 0x1) |
654 | return 1; | |
655 | ||
656 | /* CNEX Labs - PCI ID + Vendor specific bit */ | |
09f2e716 MB |
657 | if (pdev->vendor == PCI_VENDOR_ID_CNEX && |
658 | pdev->device == PCI_DEVICE_ID_CNEX_WL && | |
ca064085 MB |
659 | id->vs[0] == 0x1) |
660 | return 1; | |
661 | ||
662 | return 0; | |
663 | } |