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nvmet: implement rotational media information log

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Most of the information is stubbed. Supporting these commands is a
requirement for supporting rotational media.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Keith Busch
2024-11-01 13:48:47 -07:00
parent 266b652c65
commit 5fd075cdaf
3 changed files with 57 additions and 1 deletions
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1
drivers/nvme/host/core.c
View File

@@ -5002,6 +5002,7 @@ static inline void _nvme_check_size(void)
BUILD_BUG_ON(sizeof(struct nvme_lba_range_type) != 64);
BUILD_BUG_ON(sizeof(struct nvme_smart_log) != 512);
BUILD_BUG_ON(sizeof(struct nvme_endurance_group_log) != 512);
BUILD_BUG_ON(sizeof(struct nvme_rotational_media_log) != 512);
BUILD_BUG_ON(sizeof(struct nvme_dbbuf) != 64);
BUILD_BUG_ON(sizeof(struct nvme_directive_cmd) != 64);
BUILD_BUG_ON(sizeof(struct nvme_feat_host_behavior) != 512);

42
drivers/nvme/target/admin-cmd.c
View File

@@ -91,6 +91,7 @@ static void nvmet_execute_get_supported_log_pages(struct nvmet_req *req)
logs->lids[NVME_LOG_ENDURANCE_GROUP] = cpu_to_le32(NVME_LIDS_LSUPP);
logs->lids[NVME_LOG_ANA] = cpu_to_le32(NVME_LIDS_LSUPP);
logs->lids[NVME_LOG_FEATURES] = cpu_to_le32(NVME_LIDS_LSUPP);
logs->lids[NVME_LOG_RMI] = cpu_to_le32(NVME_LIDS_LSUPP);
logs->lids[NVME_LOG_RESERVATION] = cpu_to_le32(NVME_LIDS_LSUPP);
status = nvmet_copy_to_sgl(req, 0, logs, sizeof(*logs));
@@ -158,6 +159,45 @@ static u16 nvmet_get_smart_log_all(struct nvmet_req *req,
return NVME_SC_SUCCESS;
}
static void nvmet_execute_get_log_page_rmi(struct nvmet_req *req)
{
struct nvme_rotational_media_log *log;
struct gendisk *disk;
u16 status;
req->cmd->common.nsid = cpu_to_le32(le16_to_cpu(
req->cmd->get_log_page.lsi));
status = nvmet_req_find_ns(req);
if (status)
goto out;
if (!req->ns->bdev || bdev_nonrot(req->ns->bdev)) {
status = NVME_SC_INVALID_FIELD | NVME_STATUS_DNR;
goto out;
}
if (req->transfer_len != sizeof(*log)) {
status = NVME_SC_SGL_INVALID_DATA | NVME_STATUS_DNR;
goto out;
}
log = kzalloc(sizeof(*log), GFP_KERNEL);
if (!log)
goto out;
log->endgid = req->cmd->get_log_page.lsi;
disk = req->ns->bdev->bd_disk;
if (disk && disk->ia_ranges)
log->numa = cpu_to_le16(disk->ia_ranges->nr_ia_ranges);
else
log->numa = cpu_to_le16(1);
status = nvmet_copy_to_sgl(req, 0, log, sizeof(*log));
kfree(log);
out:
nvmet_req_complete(req, status);
}
static void nvmet_execute_get_log_page_smart(struct nvmet_req *req)
{
struct nvme_smart_log *log;
@@ -451,6 +491,8 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req)
return nvmet_execute_get_log_page_ana(req);
case NVME_LOG_FEATURES:
return nvmet_execute_get_log_page_features(req);
case NVME_LOG_RMI:
return nvmet_execute_get_log_page_rmi(req);
case NVME_LOG_RESERVATION:
return nvmet_execute_get_log_page_resv(req);
}

15
include/linux/nvme.h
View File

@@ -642,6 +642,18 @@ struct nvme_endurance_group_log {
__u8 rsvd192[320];
};
struct nvme_rotational_media_log {
__le16 endgid;
__le16 numa;
__le16 nrs;
__u8 rsvd6[2];
__le32 spinc;
__le32 fspinc;
__le32 ldc;
__le32 fldc;
__u8 rsvd24[488];
};
struct nvme_smart_log {
__u8 critical_warning;
__u8 temperature[2];
@@ -1281,6 +1293,7 @@ enum {
NVME_LOG_ENDURANCE_GROUP = 0x09,
NVME_LOG_ANA = 0x0c,
NVME_LOG_FEATURES = 0x12,
NVME_LOG_RMI = 0x16,
NVME_LOG_DISC = 0x70,
NVME_LOG_RESERVATION = 0x80,
NVME_FWACT_REPL = (0 << 3),
@@ -1435,7 +1448,7 @@ struct nvme_get_log_page_command {
__u8 lsp; /* upper 4 bits reserved */
__le16 numdl;
__le16 numdu;
__u16 rsvd11;
__le16 lsi;
union {
struct {
__le32 lpol;