1276 lines
32 KiB
C
1276 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* nvme-lightnvm.c - LightNVM NVMe device
|
|
*
|
|
* Copyright (C) 2014-2015 IT University of Copenhagen
|
|
* Initial release: Matias Bjorling <mb@lightnvm.io>
|
|
*/
|
|
|
|
#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[];
|
|
};
|
|
|
|
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,
|
|
sector_t slba, int nchks,
|
|
struct nvm_chk_meta *meta)
|
|
{
|
|
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, *dev_meta_off;
|
|
struct ppa_addr ppa;
|
|
size_t left = nchks * sizeof(struct nvme_nvm_chk_meta);
|
|
size_t log_pos, offset, len;
|
|
int i, max_len;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* 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);
|
|
|
|
dev_meta = kmalloc(max_len, GFP_KERNEL);
|
|
if (!dev_meta)
|
|
return -ENOMEM;
|
|
|
|
/* 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);
|
|
|
|
memset(dev_meta, 0, max_len);
|
|
dev_meta_off = dev_meta;
|
|
|
|
ret = nvme_get_log(ctrl, ns->head->ns_id,
|
|
NVME_NVM_LOG_REPORT_CHUNK, 0, NVME_CSI_NVM,
|
|
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_off->state;
|
|
meta->type = dev_meta_off->type;
|
|
meta->wi = dev_meta_off->wi;
|
|
meta->slba = le64_to_cpu(dev_meta_off->slba);
|
|
meta->cnlb = le64_to_cpu(dev_meta_off->cnlb);
|
|
meta->wp = le64_to_cpu(dev_meta_off->wp);
|
|
|
|
meta++;
|
|
dev_meta_off++;
|
|
}
|
|
|
|
offset += len;
|
|
left -= len;
|
|
}
|
|
|
|
kfree(dev_meta);
|
|
|
|
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);
|
|
if (IS_ERR(rq))
|
|
return rq;
|
|
|
|
rq->cmd_flags &= ~REQ_FAILFAST_DRIVER;
|
|
|
|
if (rqd->bio)
|
|
blk_rq_append_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,
|
|
void *buf)
|
|
{
|
|
struct nvm_geo *geo = &dev->geo;
|
|
struct request_queue *q = dev->q;
|
|
struct nvme_nvm_command *cmd;
|
|
struct request *rq;
|
|
int ret;
|
|
|
|
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)) {
|
|
ret = PTR_ERR(rq);
|
|
goto err_free_cmd;
|
|
}
|
|
|
|
if (buf) {
|
|
ret = blk_rq_map_kern(q, rq, buf, geo->csecs * rqd->nr_ppas,
|
|
GFP_KERNEL);
|
|
if (ret)
|
|
goto err_free_cmd;
|
|
}
|
|
|
|
rq->end_io_data = rqd;
|
|
|
|
blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
|
|
|
|
return 0;
|
|
|
|
err_free_cmd:
|
|
kfree(cmd);
|
|
return ret;
|
|
}
|
|
|
|
static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name,
|
|
int size)
|
|
{
|
|
struct nvme_ns *ns = nvmdev->q->queuedata;
|
|
|
|
return dma_pool_create(name, ns->ctrl->dev, 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,
|
|
|
|
.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);
|
|
if (IS_ERR(rq)) {
|
|
ret = -ENOMEM;
|
|
goto err_cmd;
|
|
}
|
|
|
|
if (timeout)
|
|
rq->timeout = 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.cdw13 = cpu_to_le32(vcmd.cdw13);
|
|
c.common.cdw14 = cpu_to_le32(vcmd.cdw14);
|
|
c.common.cdw15 = 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;
|
|
}
|
|
}
|
|
|
|
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
|
|
{
|
|
struct request_queue *q = ns->queue;
|
|
struct nvm_dev *dev;
|
|
struct nvm_geo *geo;
|
|
|
|
_nvme_nvm_check_size();
|
|
|
|
dev = nvm_alloc_dev(node);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
/* Note that csecs and sos will be overridden if it is a 1.2 drive. */
|
|
geo = &dev->geo;
|
|
geo->csecs = 1 << ns->lba_shift;
|
|
geo->sos = ns->ms;
|
|
if (ns->features & NVME_NS_EXT_LBAS)
|
|
geo->ext = true;
|
|
else
|
|
geo->ext = false;
|
|
geo->mdts = ns->ctrl->max_hw_sectors;
|
|
|
|
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);
|
|
|
|
/* 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[] = {
|
|
/* version agnostic attrs */
|
|
&dev_attr_version.attr,
|
|
&dev_attr_capabilities.attr,
|
|
&dev_attr_read_typ.attr,
|
|
&dev_attr_read_max.attr,
|
|
|
|
/* 1.2 attrs */
|
|
&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_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,
|
|
|
|
/* 2.0 attrs */
|
|
&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_write_typ.attr,
|
|
&dev_attr_write_max.attr,
|
|
&dev_attr_reset_typ.attr,
|
|
&dev_attr_reset_max.attr,
|
|
|
|
NULL,
|
|
};
|
|
|
|
static umode_t nvm_dev_attrs_visible(struct kobject *kobj,
|
|
struct attribute *attr, int index)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct gendisk *disk = dev_to_disk(dev);
|
|
struct nvme_ns *ns = disk->private_data;
|
|
struct nvm_dev *ndev = ns->ndev;
|
|
struct device_attribute *dev_attr =
|
|
container_of(attr, typeof(*dev_attr), attr);
|
|
|
|
if (!ndev)
|
|
return 0;
|
|
|
|
if (dev_attr->show == nvm_dev_attr_show)
|
|
return attr->mode;
|
|
|
|
switch (ndev->geo.major_ver_id) {
|
|
case 1:
|
|
if (dev_attr->show == nvm_dev_attr_show_12)
|
|
return attr->mode;
|
|
break;
|
|
case 2:
|
|
if (dev_attr->show == nvm_dev_attr_show_20)
|
|
return attr->mode;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct attribute_group nvme_nvm_attr_group = {
|
|
.name = "lightnvm",
|
|
.attrs = nvm_dev_attrs,
|
|
.is_visible = nvm_dev_attrs_visible,
|
|
};
|