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nvme: simplify the API for getting log pages

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Merge nvme_get_log and nvme_get_log_ext into a single helper, which takes
a plain nsid instead of the nvme_ns pointer.  Also add support for the
log specific field while we're at it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
This commit is contained in:
Christoph Hellwig 2018-06-06 14:39:00 +02:00
parent 1a37621658
commit 0e98719b0e
3 changed files with 16 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/nvme/host/core.c
View File

@ -2249,21 +2249,16 @@ out_unlock:
return ret;
}
int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 log_page, void *log,
size_t size, u64 offset)
int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp,
void *log, size_t size, u64 offset)
{
struct nvme_command c = { };
unsigned long dwlen = size / 4 - 1;
c.get_log_page.opcode = nvme_admin_get_log_page;
if (ns)
c.get_log_page.nsid = cpu_to_le32(ns->head->ns_id);
else
c.get_log_page.nsid = cpu_to_le32(NVME_NSID_ALL);
c.get_log_page.nsid = cpu_to_le32(nsid);
c.get_log_page.lid = log_page;
c.get_log_page.lsp = lsp;
c.get_log_page.numdl = cpu_to_le16(dwlen & ((1 << 16) - 1));
c.get_log_page.numdu = cpu_to_le16(dwlen >> 16);
c.get_log_page.lpol = cpu_to_le32(lower_32_bits(offset));
@ -2272,12 +2267,6 @@ int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);
}
static int nvme_get_log(struct nvme_ctrl *ctrl, u8 log_page, void *log,
size_t size)
{
return nvme_get_log_ext(ctrl, NULL, log_page, log, size, 0);
}
static int nvme_get_effects_log(struct nvme_ctrl *ctrl)
{
int ret;
@ -2288,8 +2277,8 @@ static int nvme_get_effects_log(struct nvme_ctrl *ctrl)
if (!ctrl->effects)
return 0;
ret = nvme_get_log(ctrl, NVME_LOG_CMD_EFFECTS, ctrl->effects,
sizeof(*ctrl->effects));
ret = nvme_get_log(ctrl, NVME_NSID_ALL, NVME_LOG_CMD_EFFECTS, 0,
ctrl->effects, sizeof(*ctrl->effects), 0);
if (ret) {
kfree(ctrl->effects);
ctrl->effects = NULL;
@ -3208,7 +3197,8 @@ static void nvme_clear_changed_ns_log(struct nvme_ctrl *ctrl)
* raced with us in reading the log page, which could cause us to miss
* updates.
*/
error = nvme_get_log(ctrl, NVME_LOG_CHANGED_NS, log, log_size);
error = nvme_get_log(ctrl, NVME_NSID_ALL, NVME_LOG_CHANGED_NS, 0, log,
log_size, 0);
if (error)
dev_warn(ctrl->device,
"reading changed ns log failed: %d\n", error);
@ -3325,9 +3315,9 @@ static void nvme_get_fw_slot_info(struct nvme_ctrl *ctrl)
if (!log)
return;
if (nvme_get_log(ctrl, NVME_LOG_FW_SLOT, log, sizeof(*log)))
dev_warn(ctrl->device,
"Get FW SLOT INFO log error\n");
if (nvme_get_log(ctrl, NVME_NSID_ALL, 0, NVME_LOG_FW_SLOT, log,
sizeof(*log), 0))
dev_warn(ctrl->device, "Get FW SLOT INFO log error\n");
kfree(log);
}

5
drivers/nvme/host/lightnvm.c
View File

@ -604,8 +604,9 @@ static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
while (left) {
len = min_t(unsigned int, left, max_len);
ret = nvme_get_log_ext(ctrl, ns, NVME_NVM_LOG_REPORT_CHUNK,
dev_meta, len, offset);
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;

4
drivers/nvme/host/nvme.h
View File

@ -443,8 +443,8 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl);
int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 log_page, void *log, size_t size, u64 offset);
int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp,
void *log, size_t size, u64 offset);
extern const struct attribute_group nvme_ns_id_attr_group;
extern const struct block_device_operations nvme_ns_head_ops;