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nvme: implement log page low/high offset and dwords

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NVMe 1.2.1 extends the get log page interface to include 64 bit
offset and increases the number of dwords to 32 bits. Implement
for future use.

Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Matias Bjørling 2018-02-26 13:55:40 +01:00 committed by Jens Axboe
parent 765cc031cd
commit 70da6094a6
1 changed files with 24 additions and 12 deletions
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36
drivers/nvme/host/core.c
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@ -100,11 +100,6 @@ static struct class *nvme_subsys_class;
static void nvme_ns_remove(struct nvme_ns *ns);
static int nvme_revalidate_disk(struct gendisk *disk);
static __le32 nvme_get_log_dw10(u8 lid, size_t size)
{
return cpu_to_le32((((size / 4) - 1) << 16) | lid);
}
int nvme_reset_ctrl(struct nvme_ctrl *ctrl)
{
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING))
@ -2218,16 +2213,33 @@ static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
return ret;
}
static int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 log_page, void *log,
size_t size, size_t 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.lid = log_page;
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(offset & ((1ULL << 32) - 1));
c.get_log_page.lpou = cpu_to_le32(offset >> 32ULL);
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)
{
struct nvme_command c = { };
c.common.opcode = nvme_admin_get_log_page;
c.common.nsid = cpu_to_le32(NVME_NSID_ALL);
c.common.cdw10[0] = nvme_get_log_dw10(log_page, size);
return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);
return nvme_get_log_ext(ctrl, NULL, log_page, log, size, 0);
}
static int nvme_get_effects_log(struct nvme_ctrl *ctrl)