drivers/nvme/host/lightnvm.c

   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
  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
  94 struct nvme_nvm_getbbtbl {
  95         __u8                    opcode;
  96         __u8                    flags;
  97         __u16                   command_id;
  98         __le32                  nsid;
  99         __u64                   rsvd[2];
 100         __le64                  prp1;
 101         __le64                  prp2;
 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];
 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;
 143                 struct nvme_nvm_getbbtbl get_bb;
 144                 struct nvme_nvm_setbbtbl set_bb;
 145                 struct nvme_nvm_erase_blk erase;
 146         };
 147 };
 148
 149 struct nvme_nvm_lp_mlc {
 150         __u16                   num_pairs;
 151         __u8                    pairs[886];
 152 };
 153
 154 struct nvme_nvm_lp_tbl {
 155         __u8                    id[8];
 156         struct nvme_nvm_lp_mlc  mlc;
 157 };
 158
 159 struct nvme_nvm_id_group {
 160         __u8                    mtype;
 161         __u8                    fmtype;
 162         __le16                  res16;
 163         __u8                    num_ch;
 164         __u8                    num_lun;
 165         __u8                    num_pln;
 166         __u8                    rsvd1;
 167         __le16                  num_blk;
 168         __le16                  num_pg;
 169         __le16                  fpg_sz;
 170         __le16                  csecs;
 171         __le16                  sos;
 172         __le16                  rsvd2;
 173         __le32                  trdt;
 174         __le32                  trdm;
 175         __le32                  tprt;
 176         __le32                  tprm;
 177         __le32                  tbet;
 178         __le32                  tbem;
 179         __le32                  mpos;
 180         __le32                  mccap;
 181         __le16                  cpar;
 182         __u8                    reserved[10];
 183         struct nvme_nvm_lp_tbl lptbl;
 184 } __packed;
 185
 186 struct nvme_nvm_addr_format {
 187         __u8                    ch_offset;
 188         __u8                    ch_len;
 189         __u8                    lun_offset;
 190         __u8                    lun_len;
 191         __u8                    pln_offset;
 192         __u8                    pln_len;
 193         __u8                    blk_offset;
 194         __u8                    blk_len;
 195         __u8                    pg_offset;
 196         __u8                    pg_len;
 197         __u8                    sect_offset;
 198         __u8                    sect_len;
 199         __u8                    res[4];
 200 } __packed;
 201
 202 struct nvme_nvm_id {
 203         __u8                    ver_id;
 204         __u8                    vmnt;
 205         __u8                    cgrps;
 206         __u8                    res;
 207         __le32                  cap;
 208         __le32                  dom;
 209         struct nvme_nvm_addr_format ppaf;
 210         __u8                    resv[228];
 211         struct nvme_nvm_id_group groups[4];
 212 } __packed;
 213
 214 struct nvme_nvm_bb_tbl {
 215         __u8    tblid[4];
 216         __le16  verid;
 217         __le16  revid;
 218         __le32  rvsd1;
 219         __le32  tblks;
 220         __le32  tfact;
 221         __le32  tgrown;
 222         __le32  tdresv;
 223         __le32  thresv;
 224         __le32  rsvd2[8];
 225         __u8    blk[0];
 226 };
 227
 228 /*
 229  * Check we didn't inadvertently grow the command struct
 230  */
 231 static inline void _nvme_nvm_check_size(void)
 232 {
 233         BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64);
 234         BUILD_BUG_ON(sizeof(struct nvme_nvm_hb_rw) != 64);
 235         BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64);
 236         BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64);
 237         BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64);
 238         BUILD_BUG_ON(sizeof(struct nvme_nvm_l2ptbl) != 64);
 239         BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64);
 240         BUILD_BUG_ON(sizeof(struct nvme_nvm_id_group) != 960);
 241         BUILD_BUG_ON(sizeof(struct nvme_nvm_addr_format) != 128);
 242         BUILD_BUG_ON(sizeof(struct nvme_nvm_id) != 4096);
 243         BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 512);
 244 }
 245
 246 static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
 247 {
 248         struct nvme_nvm_id_group *src;
 249         struct nvm_id_group *dst;
 250         int i, end;
 251
 252         end = min_t(u32, 4, nvm_id->cgrps);
 253
 254         for (i = 0; i < end; i++) {
 255                 src = &nvme_nvm_id->groups[i];
 256                 dst = &nvm_id->groups[i];
 257
 258                 dst->mtype = src->mtype;
 259                 dst->fmtype = src->fmtype;
 260                 dst->num_ch = src->num_ch;
 261                 dst->num_lun = src->num_lun;
 262                 dst->num_pln = src->num_pln;
 263
 264                 dst->num_pg = le16_to_cpu(src->num_pg);
 265                 dst->num_blk = le16_to_cpu(src->num_blk);
 266                 dst->fpg_sz = le16_to_cpu(src->fpg_sz);
 267                 dst->csecs = le16_to_cpu(src->csecs);
 268                 dst->sos = le16_to_cpu(src->sos);
 269
 270                 dst->trdt = le32_to_cpu(src->trdt);
 271                 dst->trdm = le32_to_cpu(src->trdm);
 272                 dst->tprt = le32_to_cpu(src->tprt);
 273                 dst->tprm = le32_to_cpu(src->tprm);
 274                 dst->tbet = le32_to_cpu(src->tbet);
 275                 dst->tbem = le32_to_cpu(src->tbem);
 276                 dst->mpos = le32_to_cpu(src->mpos);
 277                 dst->mccap = le32_to_cpu(src->mccap);
 278
 279                 dst->cpar = le16_to_cpu(src->cpar);
 280
 281                 if (dst->fmtype == NVM_ID_FMTYPE_MLC) {
 282                         memcpy(dst->lptbl.id, src->lptbl.id, 8);
 283                         dst->lptbl.mlc.num_pairs =
 284                                         le16_to_cpu(src->lptbl.mlc.num_pairs);
 285                         /* 4 bits per pair */
 286                         memcpy(dst->lptbl.mlc.pairs, src->lptbl.mlc.pairs,
 287                                                 dst->lptbl.mlc.num_pairs >> 1);
 288                 }
 289         }
 290
 291         return 0;
 292 }
 293
 294 static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
 295 {
 296         struct nvme_ns *ns = nvmdev->q->queuedata;
 297         struct nvme_nvm_id *nvme_nvm_id;
 298         struct nvme_nvm_command c = {};
 299         int ret;
 300
 301         c.identity.opcode = nvme_nvm_admin_identity;
 302         c.identity.nsid = cpu_to_le32(ns->ns_id);
 303         c.identity.chnl_off = 0;
 304
 305         nvme_nvm_id = kmalloc(sizeof(struct nvme_nvm_id), GFP_KERNEL);
 306         if (!nvme_nvm_id)
 307                 return -ENOMEM;
 308
 309         ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
 310                                 nvme_nvm_id, sizeof(struct nvme_nvm_id));
 311         if (ret) {
 312                 ret = -EIO;
 313                 goto out;
 314         }
 315
 316         nvm_id->ver_id = nvme_nvm_id->ver_id;
 317         nvm_id->vmnt = nvme_nvm_id->vmnt;
 318         nvm_id->cgrps = nvme_nvm_id->cgrps;
 319         nvm_id->cap = le32_to_cpu(nvme_nvm_id->cap);
 320         nvm_id->dom = le32_to_cpu(nvme_nvm_id->dom);
 321         memcpy(&nvm_id->ppaf, &nvme_nvm_id->ppaf,
 322                                         sizeof(struct nvme_nvm_addr_format));
 323
 324         ret = init_grps(nvm_id, nvme_nvm_id);
 325 out:
 326         kfree(nvme_nvm_id);
 327         return ret;
 328 }
 329
 330 static int nvme_nvm_get_l2p_tbl(struct nvm_dev *nvmdev, u64 slba, u32 nlb,
 331                                 nvm_l2p_update_fn *update_l2p, void *priv)
 332 {
 333         struct nvme_ns *ns = nvmdev->q->queuedata;
 334         struct nvme_nvm_command c = {};
 335         u32 len = queue_max_hw_sectors(ns->ctrl->admin_q) << 9;
 336         u32 nlb_pr_rq = len / sizeof(u64);
 337         u64 cmd_slba = slba;
 338         void *entries;
 339         int ret = 0;
 340
 341         c.l2p.opcode = nvme_nvm_admin_get_l2p_tbl;
 342         c.l2p.nsid = cpu_to_le32(ns->ns_id);
 343         entries = kmalloc(len, GFP_KERNEL);
 344         if (!entries)
 345                 return -ENOMEM;
 346
 347         while (nlb) {
 348                 u32 cmd_nlb = min(nlb_pr_rq, nlb);
 349
 350                 c.l2p.slba = cpu_to_le64(cmd_slba);
 351                 c.l2p.nlb = cpu_to_le32(cmd_nlb);
 352
 353                 ret = nvme_submit_sync_cmd(ns->ctrl->admin_q,
 354                                 (struct nvme_command *)&c, entries, len);
 355                 if (ret) {
 356                         dev_err(ns->ctrl->dev, "L2P table transfer failed (%d)\n",
 357                                                                         ret);
 358                         ret = -EIO;
 359                         goto out;
 360                 }
 361
 362                 if (update_l2p(cmd_slba, cmd_nlb, entries, priv)) {
 363                         ret = -EINTR;
 364                         goto out;
 365                 }
 366
 367                 cmd_slba += cmd_nlb;
 368                 nlb -= cmd_nlb;
 369         }
 370
 371 out:
 372         kfree(entries);
 373         return ret;
 374 }
 375
 376 static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
 377                                 int nr_blocks, nvm_bb_update_fn *update_bbtbl,
 378                                 void *priv)
 379 {
 380         struct request_queue *q = nvmdev->q;
 381         struct nvme_ns *ns = q->queuedata;
 382         struct nvme_ctrl *ctrl = ns->ctrl;
 383         struct nvme_nvm_command c = {};
 384         struct nvme_nvm_bb_tbl *bb_tbl;
 385         int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blocks;
 386         int ret = 0;
 387
 388         c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl;
 389         c.get_bb.nsid = cpu_to_le32(ns->ns_id);
 390         c.get_bb.spba = cpu_to_le64(ppa.ppa);
 391
 392         bb_tbl = kzalloc(tblsz, GFP_KERNEL);
 393         if (!bb_tbl)
 394                 return -ENOMEM;
 395
 396         ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c,
 397                                                                 bb_tbl, tblsz);
 398         if (ret) {
 399                 dev_err(ctrl->dev, "get bad block table failed (%d)\n", ret);
 400                 ret = -EIO;
 401                 goto out;
 402         }
 403
 404         if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' ||
 405                 bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') {
 406                 dev_err(ctrl->dev, "bbt format mismatch\n");
 407                 ret = -EINVAL;
 408                 goto out;
 409         }
 410
 411         if (le16_to_cpu(bb_tbl->verid) != 1) {
 412                 ret = -EINVAL;
 413                 dev_err(ctrl->dev, "bbt version not supported\n");
 414                 goto out;
 415         }
 416
 417         if (le32_to_cpu(bb_tbl->tblks) != nr_blocks) {
 418                 ret = -EINVAL;
 419                 dev_err(ctrl->dev, "bbt unsuspected blocks returned (%u!=%u)",
 420                                         le32_to_cpu(bb_tbl->tblks), nr_blocks);
 421                 goto out;
 422         }
 423
 424         ppa = dev_to_generic_addr(nvmdev, ppa);
 425         ret = update_bbtbl(ppa, nr_blocks, bb_tbl->blk, priv);
 426 out:
 427         kfree(bb_tbl);
 428         return ret;
 429 }
 430
 431 static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct nvm_rq *rqd,
 432                                                                 int type)
 433 {
 434         struct nvme_ns *ns = nvmdev->q->queuedata;
 435         struct nvme_nvm_command c = {};
 436         int ret = 0;
 437
 438         c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl;
 439         c.set_bb.nsid = cpu_to_le32(ns->ns_id);
 440         c.set_bb.spba = cpu_to_le64(rqd->ppa_addr.ppa);
 441         c.set_bb.nlb = cpu_to_le16(rqd->nr_pages - 1);
 442         c.set_bb.value = type;
 443
 444         ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
 445                                                                 NULL, 0);
 446         if (ret)
 447                 dev_err(ns->ctrl->dev, "set bad block table failed (%d)\n", ret);
 448         return ret;
 449 }
 450
 451 static inline void nvme_nvm_rqtocmd(struct request *rq, struct nvm_rq *rqd,
 452                                 struct nvme_ns *ns, struct nvme_nvm_command *c)
 453 {
 454         c->ph_rw.opcode = rqd->opcode;
 455         c->ph_rw.nsid = cpu_to_le32(ns->ns_id);
 456         c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa);
 457         c->ph_rw.control = cpu_to_le16(rqd->flags);
 458         c->ph_rw.length = cpu_to_le16(rqd->nr_pages - 1);
 459
 460         if (rqd->opcode == NVM_OP_HBWRITE || rqd->opcode == NVM_OP_HBREAD)
 461                 c->hb_rw.slba = cpu_to_le64(nvme_block_nr(ns,
 462                                                 rqd->bio->bi_iter.bi_sector));
 463 }
 464
 465 static void nvme_nvm_end_io(struct request *rq, int error)
 466 {
 467         struct nvm_rq *rqd = rq->end_io_data;
 468
 469         nvm_end_io(rqd, error);
 470
 471         kfree(rq->cmd);
 472         blk_mq_free_request(rq);
 473 }
 474
 475 static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
 476 {
 477         struct request_queue *q = dev->q;
 478         struct nvme_ns *ns = q->queuedata;
 479         struct request *rq;
 480         struct bio *bio = rqd->bio;
 481         struct nvme_nvm_command *cmd;
 482
 483         rq = blk_mq_alloc_request(q, bio_rw(bio), 0);
 484         if (IS_ERR(rq))
 485                 return -ENOMEM;
 486
 487         cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL);
 488         if (!cmd) {
 489                 blk_mq_free_request(rq);
 490                 return -ENOMEM;
 491         }
 492
 493         rq->cmd_type = REQ_TYPE_DRV_PRIV;
 494         rq->ioprio = bio_prio(bio);
 495
 496         if (bio_has_data(bio))
 497                 rq->nr_phys_segments = bio_phys_segments(q, bio);
 498
 499         rq->__data_len = bio->bi_iter.bi_size;
 500         rq->bio = rq->biotail = bio;
 501
 502         nvme_nvm_rqtocmd(rq, rqd, ns, cmd);
 503
 504         rq->cmd = (unsigned char *)cmd;
 505         rq->cmd_len = sizeof(struct nvme_nvm_command);
 506         rq->special = (void *)0;
 507
 508         rq->end_io_data = rqd;
 509
 510         blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
 511
 512         return 0;
 513 }
 514
 515 static int nvme_nvm_erase_block(struct nvm_dev *dev, struct nvm_rq *rqd)
 516 {
 517         struct request_queue *q = dev->q;
 518         struct nvme_ns *ns = q->queuedata;
 519         struct nvme_nvm_command c = {};
 520
 521         c.erase.opcode = NVM_OP_ERASE;
 522         c.erase.nsid = cpu_to_le32(ns->ns_id);
 523         c.erase.spba = cpu_to_le64(rqd->ppa_addr.ppa);
 524         c.erase.length = cpu_to_le16(rqd->nr_pages - 1);
 525
 526         return nvme_submit_sync_cmd(q, (struct nvme_command *)&c, NULL, 0);
 527 }
 528
 529 static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name)
 530 {
 531         struct nvme_ns *ns = nvmdev->q->queuedata;
 532
 533         return dma_pool_create(name, ns->ctrl->dev, PAGE_SIZE, PAGE_SIZE, 0);
 534 }
 535
 536 static void nvme_nvm_destroy_dma_pool(void *pool)
 537 {
 538         struct dma_pool *dma_pool = pool;
 539
 540         dma_pool_destroy(dma_pool);
 541 }
 542
 543 static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
 544                                     gfp_t mem_flags, dma_addr_t *dma_handler)
 545 {
 546         return dma_pool_alloc(pool, mem_flags, dma_handler);
 547 }
 548
 549 static void nvme_nvm_dev_dma_free(void *pool, void *ppa_list,
 550                                                         dma_addr_t dma_handler)
 551 {
 552         dma_pool_free(pool, ppa_list, dma_handler);
 553 }
 554
 555 static struct nvm_dev_ops nvme_nvm_dev_ops = {
 556         .identity               = nvme_nvm_identity,
 557
 558         .get_l2p_tbl            = nvme_nvm_get_l2p_tbl,
 559
 560         .get_bb_tbl             = nvme_nvm_get_bb_tbl,
 561         .set_bb_tbl             = nvme_nvm_set_bb_tbl,
 562
 563         .submit_io              = nvme_nvm_submit_io,
 564         .erase_block            = nvme_nvm_erase_block,
 565
 566         .create_dma_pool        = nvme_nvm_create_dma_pool,
 567         .destroy_dma_pool       = nvme_nvm_destroy_dma_pool,
 568         .dev_dma_alloc          = nvme_nvm_dev_dma_alloc,
 569         .dev_dma_free           = nvme_nvm_dev_dma_free,
 570
 571         .max_phys_sect          = 64,
 572 };
 573
 574 int nvme_nvm_register(struct request_queue *q, char *disk_name)
 575 {
 576         return nvm_register(q, disk_name, &nvme_nvm_dev_ops);
 577 }
 578
 579 void nvme_nvm_unregister(struct request_queue *q, char *disk_name)
 580 {
 581         nvm_unregister(disk_name);
 582 }
 583
 584 /* move to shared place when used in multiple places. */
 585 #define PCI_VENDOR_ID_CNEX 0x1d1d
 586 #define PCI_DEVICE_ID_CNEX_WL 0x2807
 587 #define PCI_DEVICE_ID_CNEX_QEMU 0x1f1f
 588
 589 int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
 590 {
 591         struct nvme_ctrl *ctrl = ns->ctrl;
 592         /* XXX: this is poking into PCI structures from generic code! */
 593         struct pci_dev *pdev = to_pci_dev(ctrl->dev);
 594
 595         /* QEMU NVMe simulator - PCI ID + Vendor specific bit */
 596         if (pdev->vendor == PCI_VENDOR_ID_CNEX &&
 597                                 pdev->device == PCI_DEVICE_ID_CNEX_QEMU &&
 598                                                         id->vs[0] == 0x1)
 599                 return 1;
 600
 601         /* CNEX Labs - PCI ID + Vendor specific bit */
 602         if (pdev->vendor == PCI_VENDOR_ID_CNEX &&
 603                                 pdev->device == PCI_DEVICE_ID_CNEX_WL &&
 604                                                         id->vs[0] == 0x1)
 605                 return 1;
 606
 607         return 0;
 608 }