| /* |
| * nvme-lightnvm.c - LightNVM NVMe device |
| * |
| * Copyright (C) 2014-2015 IT University of Copenhagen |
| * Initial release: Matias Bjorling <mb@lightnvm.io> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License version |
| * 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, write to |
| * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, |
| * USA. |
| * |
| */ |
| |
| #include "nvme.h" |
| |
| #include <linux/nvme.h> |
| #include <linux/bitops.h> |
| #include <linux/lightnvm.h> |
| #include <linux/vmalloc.h> |
| #include <linux/sched/sysctl.h> |
| #include <uapi/linux/lightnvm.h> |
| |
| enum nvme_nvm_admin_opcode { |
| nvme_nvm_admin_identity = 0xe2, |
| nvme_nvm_admin_get_bb_tbl = 0xf2, |
| nvme_nvm_admin_set_bb_tbl = 0xf1, |
| }; |
| |
| enum nvme_nvm_log_page { |
| NVME_NVM_LOG_REPORT_CHUNK = 0xca, |
| }; |
| |
| struct nvme_nvm_ph_rw { |
| __u8 opcode; |
| __u8 flags; |
| __u16 command_id; |
| __le32 nsid; |
| __u64 rsvd2; |
| __le64 metadata; |
| __le64 prp1; |
| __le64 prp2; |
| __le64 spba; |
| __le16 length; |
| __le16 control; |
| __le32 dsmgmt; |
| __le64 resv; |
| }; |
| |
| struct nvme_nvm_erase_blk { |
| __u8 opcode; |
| __u8 flags; |
| __u16 command_id; |
| __le32 nsid; |
| __u64 rsvd[2]; |
| __le64 prp1; |
| __le64 prp2; |
| __le64 spba; |
| __le16 length; |
| __le16 control; |
| __le32 dsmgmt; |
| __le64 resv; |
| }; |
| |
| struct nvme_nvm_identity { |
| __u8 opcode; |
| __u8 flags; |
| __u16 command_id; |
| __le32 nsid; |
| __u64 rsvd[2]; |
| __le64 prp1; |
| __le64 prp2; |
| __u32 rsvd11[6]; |
| }; |
| |
| struct nvme_nvm_getbbtbl { |
| __u8 opcode; |
| __u8 flags; |
| __u16 command_id; |
| __le32 nsid; |
| __u64 rsvd[2]; |
| __le64 prp1; |
| __le64 prp2; |
| __le64 spba; |
| __u32 rsvd4[4]; |
| }; |
| |
| struct nvme_nvm_setbbtbl { |
| __u8 opcode; |
| __u8 flags; |
| __u16 command_id; |
| __le32 nsid; |
| __le64 rsvd[2]; |
| __le64 prp1; |
| __le64 prp2; |
| __le64 spba; |
| __le16 nlb; |
| __u8 value; |
| __u8 rsvd3; |
| __u32 rsvd4[3]; |
| }; |
| |
| struct nvme_nvm_command { |
| union { |
| struct nvme_common_command common; |
| struct nvme_nvm_ph_rw ph_rw; |
| struct nvme_nvm_erase_blk erase; |
| struct nvme_nvm_identity identity; |
| struct nvme_nvm_getbbtbl get_bb; |
| struct nvme_nvm_setbbtbl set_bb; |
| }; |
| }; |
| |
| struct nvme_nvm_id12_grp { |
| __u8 mtype; |
| __u8 fmtype; |
| __le16 res16; |
| __u8 num_ch; |
| __u8 num_lun; |
| __u8 num_pln; |
| __u8 rsvd1; |
| __le16 num_chk; |
| __le16 num_pg; |
| __le16 fpg_sz; |
| __le16 csecs; |
| __le16 sos; |
| __le16 rsvd2; |
| __le32 trdt; |
| __le32 trdm; |
| __le32 tprt; |
| __le32 tprm; |
| __le32 tbet; |
| __le32 tbem; |
| __le32 mpos; |
| __le32 mccap; |
| __le16 cpar; |
| __u8 reserved[906]; |
| } __packed; |
| |
| struct nvme_nvm_id12_addrf { |
| __u8 ch_offset; |
| __u8 ch_len; |
| __u8 lun_offset; |
| __u8 lun_len; |
| __u8 pln_offset; |
| __u8 pln_len; |
| __u8 blk_offset; |
| __u8 blk_len; |
| __u8 pg_offset; |
| __u8 pg_len; |
| __u8 sec_offset; |
| __u8 sec_len; |
| __u8 res[4]; |
| } __packed; |
| |
| struct nvme_nvm_id12 { |
| __u8 ver_id; |
| __u8 vmnt; |
| __u8 cgrps; |
| __u8 res; |
| __le32 cap; |
| __le32 dom; |
| struct nvme_nvm_id12_addrf ppaf; |
| __u8 resv[228]; |
| struct nvme_nvm_id12_grp grp; |
| __u8 resv2[2880]; |
| } __packed; |
| |
| struct nvme_nvm_bb_tbl { |
| __u8 tblid[4]; |
| __le16 verid; |
| __le16 revid; |
| __le32 rvsd1; |
| __le32 tblks; |
| __le32 tfact; |
| __le32 tgrown; |
| __le32 tdresv; |
| __le32 thresv; |
| __le32 rsvd2[8]; |
| __u8 blk[0]; |
| }; |
| |
| struct nvme_nvm_id20_addrf { |
| __u8 grp_len; |
| __u8 pu_len; |
| __u8 chk_len; |
| __u8 lba_len; |
| __u8 resv[4]; |
| }; |
| |
| struct nvme_nvm_id20 { |
| __u8 mjr; |
| __u8 mnr; |
| __u8 resv[6]; |
| |
| struct nvme_nvm_id20_addrf lbaf; |
| |
| __le32 mccap; |
| __u8 resv2[12]; |
| |
| __u8 wit; |
| __u8 resv3[31]; |
| |
| /* Geometry */ |
| __le16 num_grp; |
| __le16 num_pu; |
| __le32 num_chk; |
| __le32 clba; |
| __u8 resv4[52]; |
| |
| /* Write data requirements */ |
| __le32 ws_min; |
| __le32 ws_opt; |
| __le32 mw_cunits; |
| __le32 maxoc; |
| __le32 maxocpu; |
| __u8 resv5[44]; |
| |
| /* Performance related metrics */ |
| __le32 trdt; |
| __le32 trdm; |
| __le32 twrt; |
| __le32 twrm; |
| __le32 tcrst; |
| __le32 tcrsm; |
| __u8 resv6[40]; |
| |
| /* Reserved area */ |
| __u8 resv7[2816]; |
| |
| /* Vendor specific */ |
| __u8 vs[1024]; |
| }; |
| |
| struct nvme_nvm_chk_meta { |
| __u8 state; |
| __u8 type; |
| __u8 wi; |
| __u8 rsvd[5]; |
| __le64 slba; |
| __le64 cnlb; |
| __le64 wp; |
| }; |
| |
| /* |
| * Check we didn't inadvertently grow the command struct |
| */ |
| static inline void _nvme_nvm_check_size(void) |
| { |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_grp) != 960); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_addrf) != 16); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_id12) != NVME_IDENTIFY_DATA_SIZE); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 64); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_id20_addrf) != 8); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != 32); |
| BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != |
| sizeof(struct nvm_chk_meta)); |
| } |
| |
| static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst, |
| struct nvme_nvm_id12_addrf *src) |
| { |
| dst->ch_len = src->ch_len; |
| dst->lun_len = src->lun_len; |
| dst->blk_len = src->blk_len; |
| dst->pg_len = src->pg_len; |
| dst->pln_len = src->pln_len; |
| dst->sec_len = src->sec_len; |
| |
| dst->ch_offset = src->ch_offset; |
| dst->lun_offset = src->lun_offset; |
| dst->blk_offset = src->blk_offset; |
| dst->pg_offset = src->pg_offset; |
| dst->pln_offset = src->pln_offset; |
| dst->sec_offset = src->sec_offset; |
| |
| dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset; |
| dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset; |
| dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset; |
| dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset; |
| dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset; |
| dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset; |
| } |
| |
| static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id, |
| struct nvm_geo *geo) |
| { |
| struct nvme_nvm_id12_grp *src; |
| int sec_per_pg, sec_per_pl, pg_per_blk; |
| |
| if (id->cgrps != 1) |
| return -EINVAL; |
| |
| src = &id->grp; |
| |
| if (src->mtype != 0) { |
| pr_err("nvm: memory type not supported\n"); |
| return -EINVAL; |
| } |
| |
| /* 1.2 spec. only reports a single version id - unfold */ |
| geo->major_ver_id = id->ver_id; |
| geo->minor_ver_id = 2; |
| |
| /* Set compacted version for upper layers */ |
| geo->version = NVM_OCSSD_SPEC_12; |
| |
| geo->num_ch = src->num_ch; |
| geo->num_lun = src->num_lun; |
| geo->all_luns = geo->num_ch * geo->num_lun; |
| |
| geo->num_chk = le16_to_cpu(src->num_chk); |
| |
| geo->csecs = le16_to_cpu(src->csecs); |
| geo->sos = le16_to_cpu(src->sos); |
| |
| pg_per_blk = le16_to_cpu(src->num_pg); |
| sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs; |
| sec_per_pl = sec_per_pg * src->num_pln; |
| geo->clba = sec_per_pl * pg_per_blk; |
| |
| geo->all_chunks = geo->all_luns * geo->num_chk; |
| geo->total_secs = geo->clba * geo->all_chunks; |
| |
| geo->ws_min = sec_per_pg; |
| geo->ws_opt = sec_per_pg; |
| geo->mw_cunits = geo->ws_opt << 3; /* default to MLC safe values */ |
| |
| /* Do not impose values for maximum number of open blocks as it is |
| * unspecified in 1.2. Users of 1.2 must be aware of this and eventually |
| * specify these values through a quirk if restrictions apply. |
| */ |
| geo->maxoc = geo->all_luns * geo->num_chk; |
| geo->maxocpu = geo->num_chk; |
| |
| geo->mccap = le32_to_cpu(src->mccap); |
| |
| geo->trdt = le32_to_cpu(src->trdt); |
| geo->trdm = le32_to_cpu(src->trdm); |
| geo->tprt = le32_to_cpu(src->tprt); |
| geo->tprm = le32_to_cpu(src->tprm); |
| geo->tbet = le32_to_cpu(src->tbet); |
| geo->tbem = le32_to_cpu(src->tbem); |
| |
| /* 1.2 compatibility */ |
| geo->vmnt = id->vmnt; |
| geo->cap = le32_to_cpu(id->cap); |
| geo->dom = le32_to_cpu(id->dom); |
| |
| geo->mtype = src->mtype; |
| geo->fmtype = src->fmtype; |
| |
| geo->cpar = le16_to_cpu(src->cpar); |
| geo->mpos = le32_to_cpu(src->mpos); |
| |
| geo->pln_mode = NVM_PLANE_SINGLE; |
| |
| if (geo->mpos & 0x020202) { |
| geo->pln_mode = NVM_PLANE_DOUBLE; |
| geo->ws_opt <<= 1; |
| } else if (geo->mpos & 0x040404) { |
| geo->pln_mode = NVM_PLANE_QUAD; |
| geo->ws_opt <<= 2; |
| } |
| |
| geo->num_pln = src->num_pln; |
| geo->num_pg = le16_to_cpu(src->num_pg); |
| geo->fpg_sz = le16_to_cpu(src->fpg_sz); |
| |
| nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf); |
| |
| return 0; |
| } |
| |
| static void nvme_nvm_set_addr_20(struct nvm_addrf *dst, |
| struct nvme_nvm_id20_addrf *src) |
| { |
| dst->ch_len = src->grp_len; |
| dst->lun_len = src->pu_len; |
| dst->chk_len = src->chk_len; |
| dst->sec_len = src->lba_len; |
| |
| dst->sec_offset = 0; |
| dst->chk_offset = dst->sec_len; |
| dst->lun_offset = dst->chk_offset + dst->chk_len; |
| dst->ch_offset = dst->lun_offset + dst->lun_len; |
| |
| dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset; |
| dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset; |
| dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset; |
| dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset; |
| } |
| |
| static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id, |
| struct nvm_geo *geo) |
| { |
| geo->major_ver_id = id->mjr; |
| geo->minor_ver_id = id->mnr; |
| |
| /* Set compacted version for upper layers */ |
| geo->version = NVM_OCSSD_SPEC_20; |
| |
| geo->num_ch = le16_to_cpu(id->num_grp); |
| geo->num_lun = le16_to_cpu(id->num_pu); |
| geo->all_luns = geo->num_ch * geo->num_lun; |
| |
| geo->num_chk = le32_to_cpu(id->num_chk); |
| geo->clba = le32_to_cpu(id->clba); |
| |
| geo->all_chunks = geo->all_luns * geo->num_chk; |
| geo->total_secs = geo->clba * geo->all_chunks; |
| |
| geo->ws_min = le32_to_cpu(id->ws_min); |
| geo->ws_opt = le32_to_cpu(id->ws_opt); |
| geo->mw_cunits = le32_to_cpu(id->mw_cunits); |
| geo->maxoc = le32_to_cpu(id->maxoc); |
| geo->maxocpu = le32_to_cpu(id->maxocpu); |
| |
| geo->trdt = le32_to_cpu(id->trdt); |
| geo->trdm = le32_to_cpu(id->trdm); |
| geo->tprt = le32_to_cpu(id->twrt); |
| geo->tprm = le32_to_cpu(id->twrm); |
| geo->tbet = le32_to_cpu(id->tcrst); |
| geo->tbem = le32_to_cpu(id->tcrsm); |
| |
| nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf); |
| |
| return 0; |
| } |
| |
| static int nvme_nvm_identity(struct nvm_dev *nvmdev) |
| { |
| struct nvme_ns *ns = nvmdev->q->queuedata; |
| struct nvme_nvm_id12 *id; |
| struct nvme_nvm_command c = {}; |
| int ret; |
| |
| c.identity.opcode = nvme_nvm_admin_identity; |
| c.identity.nsid = cpu_to_le32(ns->head->ns_id); |
| |
| id = kmalloc(sizeof(struct nvme_nvm_id12), GFP_KERNEL); |
| if (!id) |
| return -ENOMEM; |
| |
| ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
| id, sizeof(struct nvme_nvm_id12)); |
| if (ret) { |
| ret = -EIO; |
| goto out; |
| } |
| |
| /* |
| * The 1.2 and 2.0 specifications share the first byte in their geometry |
| * command to make it possible to know what version a device implements. |
| */ |
| switch (id->ver_id) { |
| case 1: |
| ret = nvme_nvm_setup_12(id, &nvmdev->geo); |
| break; |
| case 2: |
| ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id, |
| &nvmdev->geo); |
| break; |
| default: |
| dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n", |
| id->ver_id); |
| ret = -EINVAL; |
| } |
| |
| out: |
| kfree(id); |
| return ret; |
| } |
| |
| static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa, |
| u8 *blks) |
| { |
| struct request_queue *q = nvmdev->q; |
| struct nvm_geo *geo = &nvmdev->geo; |
| struct nvme_ns *ns = q->queuedata; |
| struct nvme_ctrl *ctrl = ns->ctrl; |
| struct nvme_nvm_command c = {}; |
| struct nvme_nvm_bb_tbl *bb_tbl; |
| int nr_blks = geo->num_chk * geo->num_pln; |
| int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks; |
| int ret = 0; |
| |
| c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl; |
| c.get_bb.nsid = cpu_to_le32(ns->head->ns_id); |
| c.get_bb.spba = cpu_to_le64(ppa.ppa); |
| |
| bb_tbl = kzalloc(tblsz, GFP_KERNEL); |
| if (!bb_tbl) |
| return -ENOMEM; |
| |
| ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c, |
| bb_tbl, tblsz); |
| if (ret) { |
| dev_err(ctrl->device, "get bad block table failed (%d)\n", ret); |
| ret = -EIO; |
| goto out; |
| } |
| |
| if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' || |
| bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') { |
| dev_err(ctrl->device, "bbt format mismatch\n"); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if (le16_to_cpu(bb_tbl->verid) != 1) { |
| ret = -EINVAL; |
| dev_err(ctrl->device, "bbt version not supported\n"); |
| goto out; |
| } |
| |
| if (le32_to_cpu(bb_tbl->tblks) != nr_blks) { |
| ret = -EINVAL; |
| dev_err(ctrl->device, |
| "bbt unsuspected blocks returned (%u!=%u)", |
| le32_to_cpu(bb_tbl->tblks), nr_blks); |
| goto out; |
| } |
| |
| memcpy(blks, bb_tbl->blk, geo->num_chk * geo->num_pln); |
| out: |
| kfree(bb_tbl); |
| return ret; |
| } |
| |
| static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas, |
| int nr_ppas, int type) |
| { |
| struct nvme_ns *ns = nvmdev->q->queuedata; |
| struct nvme_nvm_command c = {}; |
| int ret = 0; |
| |
| c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl; |
| c.set_bb.nsid = cpu_to_le32(ns->head->ns_id); |
| c.set_bb.spba = cpu_to_le64(ppas->ppa); |
| c.set_bb.nlb = cpu_to_le16(nr_ppas - 1); |
| c.set_bb.value = type; |
| |
| ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
| NULL, 0); |
| if (ret) |
| dev_err(ns->ctrl->device, "set bad block table failed (%d)\n", |
| ret); |
| return ret; |
| } |
| |
| /* |
| * Expect the lba in device format |
| */ |
| static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev, |
| struct nvm_chk_meta *meta, |
| sector_t slba, int nchks) |
| { |
| struct nvm_geo *geo = &ndev->geo; |
| struct nvme_ns *ns = ndev->q->queuedata; |
| struct nvme_ctrl *ctrl = ns->ctrl; |
| struct nvme_nvm_chk_meta *dev_meta = (struct nvme_nvm_chk_meta *)meta; |
| struct ppa_addr ppa; |
| size_t left = nchks * sizeof(struct nvme_nvm_chk_meta); |
| size_t log_pos, offset, len; |
| int ret, i, max_len; |
| |
| /* |
| * limit requests to maximum 256K to avoid issuing arbitrary large |
| * requests when the device does not specific a maximum transfer size. |
| */ |
| max_len = min_t(unsigned int, ctrl->max_hw_sectors << 9, 256 * 1024); |
| |
| /* Normalize lba address space to obtain log offset */ |
| ppa.ppa = slba; |
| ppa = dev_to_generic_addr(ndev, ppa); |
| |
| log_pos = ppa.m.chk; |
| log_pos += ppa.m.pu * geo->num_chk; |
| log_pos += ppa.m.grp * geo->num_lun * geo->num_chk; |
| |
| offset = log_pos * sizeof(struct nvme_nvm_chk_meta); |
| |
| while (left) { |
| len = min_t(unsigned int, left, max_len); |
| |
| ret = nvme_get_log(ctrl, ns->head->ns_id, |
| NVME_NVM_LOG_REPORT_CHUNK, 0, dev_meta, len, |
| offset); |
| if (ret) { |
| dev_err(ctrl->device, "Get REPORT CHUNK log error\n"); |
| break; |
| } |
| |
| for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) { |
| meta->state = dev_meta->state; |
| meta->type = dev_meta->type; |
| meta->wi = dev_meta->wi; |
| meta->slba = le64_to_cpu(dev_meta->slba); |
| meta->cnlb = le64_to_cpu(dev_meta->cnlb); |
| meta->wp = le64_to_cpu(dev_meta->wp); |
| |
| meta++; |
| dev_meta++; |
| } |
| |
| offset += len; |
| left -= len; |
| } |
| |
| return ret; |
| } |
| |
| static inline void nvme_nvm_rqtocmd(struct nvm_rq *rqd, struct nvme_ns *ns, |
| struct nvme_nvm_command *c) |
| { |
| c->ph_rw.opcode = rqd->opcode; |
| c->ph_rw.nsid = cpu_to_le32(ns->head->ns_id); |
| c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa); |
| c->ph_rw.metadata = cpu_to_le64(rqd->dma_meta_list); |
| c->ph_rw.control = cpu_to_le16(rqd->flags); |
| c->ph_rw.length = cpu_to_le16(rqd->nr_ppas - 1); |
| } |
| |
| static void nvme_nvm_end_io(struct request *rq, blk_status_t status) |
| { |
| struct nvm_rq *rqd = rq->end_io_data; |
| |
| rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64); |
| rqd->error = nvme_req(rq)->status; |
| nvm_end_io(rqd); |
| |
| kfree(nvme_req(rq)->cmd); |
| blk_mq_free_request(rq); |
| } |
| |
| static struct request *nvme_nvm_alloc_request(struct request_queue *q, |
| struct nvm_rq *rqd, |
| struct nvme_nvm_command *cmd) |
| { |
| struct nvme_ns *ns = q->queuedata; |
| struct request *rq; |
| |
| nvme_nvm_rqtocmd(rqd, ns, cmd); |
| |
| rq = nvme_alloc_request(q, (struct nvme_command *)cmd, 0, NVME_QID_ANY); |
| if (IS_ERR(rq)) |
| return rq; |
| |
| rq->cmd_flags &= ~REQ_FAILFAST_DRIVER; |
| |
| if (rqd->bio) |
| blk_init_request_from_bio(rq, rqd->bio); |
| else |
| rq->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM); |
| |
| return rq; |
| } |
| |
| static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) |
| { |
| struct request_queue *q = dev->q; |
| struct nvme_nvm_command *cmd; |
| struct request *rq; |
| |
| cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL); |
| if (!cmd) |
| return -ENOMEM; |
| |
| rq = nvme_nvm_alloc_request(q, rqd, cmd); |
| if (IS_ERR(rq)) { |
| kfree(cmd); |
| return PTR_ERR(rq); |
| } |
| |
| rq->end_io_data = rqd; |
| |
| blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io); |
| |
| return 0; |
| } |
| |
| static int nvme_nvm_submit_io_sync(struct nvm_dev *dev, struct nvm_rq *rqd) |
| { |
| struct request_queue *q = dev->q; |
| struct request *rq; |
| struct nvme_nvm_command cmd; |
| int ret = 0; |
| |
| memset(&cmd, 0, sizeof(struct nvme_nvm_command)); |
| |
| rq = nvme_nvm_alloc_request(q, rqd, &cmd); |
| if (IS_ERR(rq)) |
| return PTR_ERR(rq); |
| |
| /* I/Os can fail and the error is signaled through rqd. Callers must |
| * handle the error accordingly. |
| */ |
| blk_execute_rq(q, NULL, rq, 0); |
| if (nvme_req(rq)->flags & NVME_REQ_CANCELLED) |
| ret = -EINTR; |
| |
| rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64); |
| rqd->error = nvme_req(rq)->status; |
| |
| blk_mq_free_request(rq); |
| |
| return ret; |
| } |
| |
| static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name) |
| { |
| struct nvme_ns *ns = nvmdev->q->queuedata; |
| |
| return dma_pool_create(name, ns->ctrl->dev, PAGE_SIZE, PAGE_SIZE, 0); |
| } |
| |
| static void nvme_nvm_destroy_dma_pool(void *pool) |
| { |
| struct dma_pool *dma_pool = pool; |
| |
| dma_pool_destroy(dma_pool); |
| } |
| |
| static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool, |
| gfp_t mem_flags, dma_addr_t *dma_handler) |
| { |
| return dma_pool_alloc(pool, mem_flags, dma_handler); |
| } |
| |
| static void nvme_nvm_dev_dma_free(void *pool, void *addr, |
| dma_addr_t dma_handler) |
| { |
| dma_pool_free(pool, addr, dma_handler); |
| } |
| |
| static struct nvm_dev_ops nvme_nvm_dev_ops = { |
| .identity = nvme_nvm_identity, |
| |
| .get_bb_tbl = nvme_nvm_get_bb_tbl, |
| .set_bb_tbl = nvme_nvm_set_bb_tbl, |
| |
| .get_chk_meta = nvme_nvm_get_chk_meta, |
| |
| .submit_io = nvme_nvm_submit_io, |
| .submit_io_sync = nvme_nvm_submit_io_sync, |
| |
| .create_dma_pool = nvme_nvm_create_dma_pool, |
| .destroy_dma_pool = nvme_nvm_destroy_dma_pool, |
| .dev_dma_alloc = nvme_nvm_dev_dma_alloc, |
| .dev_dma_free = nvme_nvm_dev_dma_free, |
| }; |
| |
| static int nvme_nvm_submit_user_cmd(struct request_queue *q, |
| struct nvme_ns *ns, |
| struct nvme_nvm_command *vcmd, |
| void __user *ubuf, unsigned int bufflen, |
| void __user *meta_buf, unsigned int meta_len, |
| void __user *ppa_buf, unsigned int ppa_len, |
| u32 *result, u64 *status, unsigned int timeout) |
| { |
| bool write = nvme_is_write((struct nvme_command *)vcmd); |
| struct nvm_dev *dev = ns->ndev; |
| struct gendisk *disk = ns->disk; |
| struct request *rq; |
| struct bio *bio = NULL; |
| __le64 *ppa_list = NULL; |
| dma_addr_t ppa_dma; |
| __le64 *metadata = NULL; |
| dma_addr_t metadata_dma; |
| DECLARE_COMPLETION_ONSTACK(wait); |
| int ret = 0; |
| |
| rq = nvme_alloc_request(q, (struct nvme_command *)vcmd, 0, |
| NVME_QID_ANY); |
| if (IS_ERR(rq)) { |
| ret = -ENOMEM; |
| goto err_cmd; |
| } |
| |
| rq->timeout = timeout ? timeout : ADMIN_TIMEOUT; |
| |
| if (ppa_buf && ppa_len) { |
| ppa_list = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, &ppa_dma); |
| if (!ppa_list) { |
| ret = -ENOMEM; |
| goto err_rq; |
| } |
| if (copy_from_user(ppa_list, (void __user *)ppa_buf, |
| sizeof(u64) * (ppa_len + 1))) { |
| ret = -EFAULT; |
| goto err_ppa; |
| } |
| vcmd->ph_rw.spba = cpu_to_le64(ppa_dma); |
| } else { |
| vcmd->ph_rw.spba = cpu_to_le64((uintptr_t)ppa_buf); |
| } |
| |
| if (ubuf && bufflen) { |
| ret = blk_rq_map_user(q, rq, NULL, ubuf, bufflen, GFP_KERNEL); |
| if (ret) |
| goto err_ppa; |
| bio = rq->bio; |
| |
| if (meta_buf && meta_len) { |
| metadata = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, |
| &metadata_dma); |
| if (!metadata) { |
| ret = -ENOMEM; |
| goto err_map; |
| } |
| |
| if (write) { |
| if (copy_from_user(metadata, |
| (void __user *)meta_buf, |
| meta_len)) { |
| ret = -EFAULT; |
| goto err_meta; |
| } |
| } |
| vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma); |
| } |
| |
| bio->bi_disk = disk; |
| } |
| |
| blk_execute_rq(q, NULL, rq, 0); |
| |
| if (nvme_req(rq)->flags & NVME_REQ_CANCELLED) |
| ret = -EINTR; |
| else if (nvme_req(rq)->status & 0x7ff) |
| ret = -EIO; |
| if (result) |
| *result = nvme_req(rq)->status & 0x7ff; |
| if (status) |
| *status = le64_to_cpu(nvme_req(rq)->result.u64); |
| |
| if (metadata && !ret && !write) { |
| if (copy_to_user(meta_buf, (void *)metadata, meta_len)) |
| ret = -EFAULT; |
| } |
| err_meta: |
| if (meta_buf && meta_len) |
| dma_pool_free(dev->dma_pool, metadata, metadata_dma); |
| err_map: |
| if (bio) |
| blk_rq_unmap_user(bio); |
| err_ppa: |
| if (ppa_buf && ppa_len) |
| dma_pool_free(dev->dma_pool, ppa_list, ppa_dma); |
| err_rq: |
| blk_mq_free_request(rq); |
| err_cmd: |
| return ret; |
| } |
| |
| static int nvme_nvm_submit_vio(struct nvme_ns *ns, |
| struct nvm_user_vio __user *uvio) |
| { |
| struct nvm_user_vio vio; |
| struct nvme_nvm_command c; |
| unsigned int length; |
| int ret; |
| |
| if (copy_from_user(&vio, uvio, sizeof(vio))) |
| return -EFAULT; |
| if (vio.flags) |
| return -EINVAL; |
| |
| memset(&c, 0, sizeof(c)); |
| c.ph_rw.opcode = vio.opcode; |
| c.ph_rw.nsid = cpu_to_le32(ns->head->ns_id); |
| c.ph_rw.control = cpu_to_le16(vio.control); |
| c.ph_rw.length = cpu_to_le16(vio.nppas); |
| |
| length = (vio.nppas + 1) << ns->lba_shift; |
| |
| ret = nvme_nvm_submit_user_cmd(ns->queue, ns, &c, |
| (void __user *)(uintptr_t)vio.addr, length, |
| (void __user *)(uintptr_t)vio.metadata, |
| vio.metadata_len, |
| (void __user *)(uintptr_t)vio.ppa_list, vio.nppas, |
| &vio.result, &vio.status, 0); |
| |
| if (ret && copy_to_user(uvio, &vio, sizeof(vio))) |
| return -EFAULT; |
| |
| return ret; |
| } |
| |
| static int nvme_nvm_user_vcmd(struct nvme_ns *ns, int admin, |
| struct nvm_passthru_vio __user *uvcmd) |
| { |
| struct nvm_passthru_vio vcmd; |
| struct nvme_nvm_command c; |
| struct request_queue *q; |
| unsigned int timeout = 0; |
| int ret; |
| |
| if (copy_from_user(&vcmd, uvcmd, sizeof(vcmd))) |
| return -EFAULT; |
| if ((vcmd.opcode != 0xF2) && (!capable(CAP_SYS_ADMIN))) |
| return -EACCES; |
| if (vcmd.flags) |
| return -EINVAL; |
| |
| memset(&c, 0, sizeof(c)); |
| c.common.opcode = vcmd.opcode; |
| c.common.nsid = cpu_to_le32(ns->head->ns_id); |
| c.common.cdw2[0] = cpu_to_le32(vcmd.cdw2); |
| c.common.cdw2[1] = cpu_to_le32(vcmd.cdw3); |
| /* cdw11-12 */ |
| c.ph_rw.length = cpu_to_le16(vcmd.nppas); |
| c.ph_rw.control = cpu_to_le16(vcmd.control); |
| c.common.cdw10[3] = cpu_to_le32(vcmd.cdw13); |
| c.common.cdw10[4] = cpu_to_le32(vcmd.cdw14); |
| c.common.cdw10[5] = cpu_to_le32(vcmd.cdw15); |
| |
| if (vcmd.timeout_ms) |
| timeout = msecs_to_jiffies(vcmd.timeout_ms); |
| |
| q = admin ? ns->ctrl->admin_q : ns->queue; |
| |
| ret = nvme_nvm_submit_user_cmd(q, ns, |
| (struct nvme_nvm_command *)&c, |
| (void __user *)(uintptr_t)vcmd.addr, vcmd.data_len, |
| (void __user *)(uintptr_t)vcmd.metadata, |
| vcmd.metadata_len, |
| (void __user *)(uintptr_t)vcmd.ppa_list, vcmd.nppas, |
| &vcmd.result, &vcmd.status, timeout); |
| |
| if (ret && copy_to_user(uvcmd, &vcmd, sizeof(vcmd))) |
| return -EFAULT; |
| |
| return ret; |
| } |
| |
| int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg) |
| { |
| switch (cmd) { |
| case NVME_NVM_IOCTL_ADMIN_VIO: |
| return nvme_nvm_user_vcmd(ns, 1, (void __user *)arg); |
| case NVME_NVM_IOCTL_IO_VIO: |
| return nvme_nvm_user_vcmd(ns, 0, (void __user *)arg); |
| case NVME_NVM_IOCTL_SUBMIT_VIO: |
| return nvme_nvm_submit_vio(ns, (void __user *)arg); |
| default: |
| return -ENOTTY; |
| } |
| } |
| |
| void nvme_nvm_update_nvm_info(struct nvme_ns *ns) |
| { |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| |
| if (geo->version == NVM_OCSSD_SPEC_12) |
| return; |
| |
| geo->csecs = 1 << ns->lba_shift; |
| geo->sos = ns->ms; |
| } |
| |
| int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node) |
| { |
| struct request_queue *q = ns->queue; |
| struct nvm_dev *dev; |
| |
| _nvme_nvm_check_size(); |
| |
| dev = nvm_alloc_dev(node); |
| if (!dev) |
| return -ENOMEM; |
| |
| dev->q = q; |
| memcpy(dev->name, disk_name, DISK_NAME_LEN); |
| dev->ops = &nvme_nvm_dev_ops; |
| dev->private_data = ns; |
| ns->ndev = dev; |
| |
| return nvm_register(dev); |
| } |
| |
| void nvme_nvm_unregister(struct nvme_ns *ns) |
| { |
| nvm_unregister(ns->ndev); |
| } |
| |
| static ssize_t nvm_dev_attr_show(struct device *dev, |
| struct device_attribute *dattr, char *page) |
| { |
| struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| struct attribute *attr; |
| |
| if (!ndev) |
| return 0; |
| |
| attr = &dattr->attr; |
| |
| if (strcmp(attr->name, "version") == 0) { |
| if (geo->major_ver_id == 1) |
| return scnprintf(page, PAGE_SIZE, "%u\n", |
| geo->major_ver_id); |
| else |
| return scnprintf(page, PAGE_SIZE, "%u.%u\n", |
| geo->major_ver_id, |
| geo->minor_ver_id); |
| } else if (strcmp(attr->name, "capabilities") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap); |
| } else if (strcmp(attr->name, "read_typ") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt); |
| } else if (strcmp(attr->name, "read_max") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm); |
| } else { |
| return scnprintf(page, |
| PAGE_SIZE, |
| "Unhandled attr(%s) in `%s`\n", |
| attr->name, __func__); |
| } |
| } |
| |
| static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page) |
| { |
| return scnprintf(page, PAGE_SIZE, |
| "0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| ppaf->ch_offset, ppaf->ch_len, |
| ppaf->lun_offset, ppaf->lun_len, |
| ppaf->pln_offset, ppaf->pln_len, |
| ppaf->blk_offset, ppaf->blk_len, |
| ppaf->pg_offset, ppaf->pg_len, |
| ppaf->sec_offset, ppaf->sec_len); |
| } |
| |
| static ssize_t nvm_dev_attr_show_12(struct device *dev, |
| struct device_attribute *dattr, char *page) |
| { |
| struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| struct attribute *attr; |
| |
| if (!ndev) |
| return 0; |
| |
| attr = &dattr->attr; |
| |
| if (strcmp(attr->name, "vendor_opcode") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt); |
| } else if (strcmp(attr->name, "device_mode") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom); |
| /* kept for compatibility */ |
| } else if (strcmp(attr->name, "media_manager") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm"); |
| } else if (strcmp(attr->name, "ppa_format") == 0) { |
| return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page); |
| } else if (strcmp(attr->name, "media_type") == 0) { /* u8 */ |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype); |
| } else if (strcmp(attr->name, "flash_media_type") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype); |
| } else if (strcmp(attr->name, "num_channels") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch); |
| } else if (strcmp(attr->name, "num_luns") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun); |
| } else if (strcmp(attr->name, "num_planes") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln); |
| } else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */ |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk); |
| } else if (strcmp(attr->name, "num_pages") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg); |
| } else if (strcmp(attr->name, "page_size") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz); |
| } else if (strcmp(attr->name, "hw_sector_size") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs); |
| } else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */ |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos); |
| } else if (strcmp(attr->name, "prog_typ") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt); |
| } else if (strcmp(attr->name, "prog_max") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm); |
| } else if (strcmp(attr->name, "erase_typ") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet); |
| } else if (strcmp(attr->name, "erase_max") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem); |
| } else if (strcmp(attr->name, "multiplane_modes") == 0) { |
| return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos); |
| } else if (strcmp(attr->name, "media_capabilities") == 0) { |
| return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap); |
| } else if (strcmp(attr->name, "max_phys_secs") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA); |
| } else { |
| return scnprintf(page, PAGE_SIZE, |
| "Unhandled attr(%s) in `%s`\n", |
| attr->name, __func__); |
| } |
| } |
| |
| static ssize_t nvm_dev_attr_show_20(struct device *dev, |
| struct device_attribute *dattr, char *page) |
| { |
| struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| struct attribute *attr; |
| |
| if (!ndev) |
| return 0; |
| |
| attr = &dattr->attr; |
| |
| if (strcmp(attr->name, "groups") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch); |
| } else if (strcmp(attr->name, "punits") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun); |
| } else if (strcmp(attr->name, "chunks") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk); |
| } else if (strcmp(attr->name, "clba") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba); |
| } else if (strcmp(attr->name, "ws_min") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min); |
| } else if (strcmp(attr->name, "ws_opt") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt); |
| } else if (strcmp(attr->name, "maxoc") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxoc); |
| } else if (strcmp(attr->name, "maxocpu") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxocpu); |
| } else if (strcmp(attr->name, "mw_cunits") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits); |
| } else if (strcmp(attr->name, "write_typ") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt); |
| } else if (strcmp(attr->name, "write_max") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm); |
| } else if (strcmp(attr->name, "reset_typ") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet); |
| } else if (strcmp(attr->name, "reset_max") == 0) { |
| return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem); |
| } else { |
| return scnprintf(page, PAGE_SIZE, |
| "Unhandled attr(%s) in `%s`\n", |
| attr->name, __func__); |
| } |
| } |
| |
| #define NVM_DEV_ATTR_RO(_name) \ |
| DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL) |
| #define NVM_DEV_ATTR_12_RO(_name) \ |
| DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_12, NULL) |
| #define NVM_DEV_ATTR_20_RO(_name) \ |
| DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_20, NULL) |
| |
| /* general attributes */ |
| static NVM_DEV_ATTR_RO(version); |
| static NVM_DEV_ATTR_RO(capabilities); |
| |
| static NVM_DEV_ATTR_RO(read_typ); |
| static NVM_DEV_ATTR_RO(read_max); |
| |
| /* 1.2 values */ |
| static NVM_DEV_ATTR_12_RO(vendor_opcode); |
| static NVM_DEV_ATTR_12_RO(device_mode); |
| static NVM_DEV_ATTR_12_RO(ppa_format); |
| static NVM_DEV_ATTR_12_RO(media_manager); |
| static NVM_DEV_ATTR_12_RO(media_type); |
| static NVM_DEV_ATTR_12_RO(flash_media_type); |
| static NVM_DEV_ATTR_12_RO(num_channels); |
| static NVM_DEV_ATTR_12_RO(num_luns); |
| static NVM_DEV_ATTR_12_RO(num_planes); |
| static NVM_DEV_ATTR_12_RO(num_blocks); |
| static NVM_DEV_ATTR_12_RO(num_pages); |
| static NVM_DEV_ATTR_12_RO(page_size); |
| static NVM_DEV_ATTR_12_RO(hw_sector_size); |
| static NVM_DEV_ATTR_12_RO(oob_sector_size); |
| static NVM_DEV_ATTR_12_RO(prog_typ); |
| static NVM_DEV_ATTR_12_RO(prog_max); |
| static NVM_DEV_ATTR_12_RO(erase_typ); |
| static NVM_DEV_ATTR_12_RO(erase_max); |
| static NVM_DEV_ATTR_12_RO(multiplane_modes); |
| static NVM_DEV_ATTR_12_RO(media_capabilities); |
| static NVM_DEV_ATTR_12_RO(max_phys_secs); |
| |
| static struct attribute *nvm_dev_attrs_12[] = { |
| &dev_attr_version.attr, |
| &dev_attr_capabilities.attr, |
| |
| &dev_attr_vendor_opcode.attr, |
| &dev_attr_device_mode.attr, |
| &dev_attr_media_manager.attr, |
| &dev_attr_ppa_format.attr, |
| &dev_attr_media_type.attr, |
| &dev_attr_flash_media_type.attr, |
| &dev_attr_num_channels.attr, |
| &dev_attr_num_luns.attr, |
| &dev_attr_num_planes.attr, |
| &dev_attr_num_blocks.attr, |
| &dev_attr_num_pages.attr, |
| &dev_attr_page_size.attr, |
| &dev_attr_hw_sector_size.attr, |
| &dev_attr_oob_sector_size.attr, |
| &dev_attr_read_typ.attr, |
| &dev_attr_read_max.attr, |
| &dev_attr_prog_typ.attr, |
| &dev_attr_prog_max.attr, |
| &dev_attr_erase_typ.attr, |
| &dev_attr_erase_max.attr, |
| &dev_attr_multiplane_modes.attr, |
| &dev_attr_media_capabilities.attr, |
| &dev_attr_max_phys_secs.attr, |
| |
| NULL, |
| }; |
| |
| static const struct attribute_group nvm_dev_attr_group_12 = { |
| .name = "lightnvm", |
| .attrs = nvm_dev_attrs_12, |
| }; |
| |
| /* 2.0 values */ |
| static NVM_DEV_ATTR_20_RO(groups); |
| static NVM_DEV_ATTR_20_RO(punits); |
| static NVM_DEV_ATTR_20_RO(chunks); |
| static NVM_DEV_ATTR_20_RO(clba); |
| static NVM_DEV_ATTR_20_RO(ws_min); |
| static NVM_DEV_ATTR_20_RO(ws_opt); |
| static NVM_DEV_ATTR_20_RO(maxoc); |
| static NVM_DEV_ATTR_20_RO(maxocpu); |
| static NVM_DEV_ATTR_20_RO(mw_cunits); |
| static NVM_DEV_ATTR_20_RO(write_typ); |
| static NVM_DEV_ATTR_20_RO(write_max); |
| static NVM_DEV_ATTR_20_RO(reset_typ); |
| static NVM_DEV_ATTR_20_RO(reset_max); |
| |
| static struct attribute *nvm_dev_attrs_20[] = { |
| &dev_attr_version.attr, |
| &dev_attr_capabilities.attr, |
| |
| &dev_attr_groups.attr, |
| &dev_attr_punits.attr, |
| &dev_attr_chunks.attr, |
| &dev_attr_clba.attr, |
| &dev_attr_ws_min.attr, |
| &dev_attr_ws_opt.attr, |
| &dev_attr_maxoc.attr, |
| &dev_attr_maxocpu.attr, |
| &dev_attr_mw_cunits.attr, |
| |
| &dev_attr_read_typ.attr, |
| &dev_attr_read_max.attr, |
| &dev_attr_write_typ.attr, |
| &dev_attr_write_max.attr, |
| &dev_attr_reset_typ.attr, |
| &dev_attr_reset_max.attr, |
| |
| NULL, |
| }; |
| |
| static const struct attribute_group nvm_dev_attr_group_20 = { |
| .name = "lightnvm", |
| .attrs = nvm_dev_attrs_20, |
| }; |
| |
| int nvme_nvm_register_sysfs(struct nvme_ns *ns) |
| { |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| |
| if (!ndev) |
| return -EINVAL; |
| |
| switch (geo->major_ver_id) { |
| case 1: |
| return sysfs_create_group(&disk_to_dev(ns->disk)->kobj, |
| &nvm_dev_attr_group_12); |
| case 2: |
| return sysfs_create_group(&disk_to_dev(ns->disk)->kobj, |
| &nvm_dev_attr_group_20); |
| } |
| |
| return -EINVAL; |
| } |
| |
| void nvme_nvm_unregister_sysfs(struct nvme_ns *ns) |
| { |
| struct nvm_dev *ndev = ns->ndev; |
| struct nvm_geo *geo = &ndev->geo; |
| |
| switch (geo->major_ver_id) { |
| case 1: |
| sysfs_remove_group(&disk_to_dev(ns->disk)->kobj, |
| &nvm_dev_attr_group_12); |
| break; |
| case 2: |
| sysfs_remove_group(&disk_to_dev(ns->disk)->kobj, |
| &nvm_dev_attr_group_20); |
| break; |
| } |
| } |