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block/nvme: Trace NVMe spec version supported by the controller 

NVMe controllers implement different versions of the spec,
and different features of it. It is useful to gather this
information when debugging.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210127212137.3482291-3-philmd@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2021-01-27 22:21:37 +01:00 committed by Kevin Wolf
parent 97b709f32e
commit fcc8672aca
2 changed files with 7 additions and 0 deletions
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6
block/nvme.c
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@ -708,6 +708,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
AioContext *aio_context = bdrv_get_aio_context(bs);
int ret;
uint64_t cap;
uint32_t ver;
uint64_t timeout_ms;
uint64_t deadline, now;
volatile NvmeBar *regs = NULL;
@ -764,6 +765,11 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
bs->bl.request_alignment = s->page_size;
timeout_ms = MIN(500 * NVME_CAP_TO(cap), 30000);
ver = le32_to_cpu(regs->vs);
trace_nvme_controller_spec_version(extract32(ver, 16, 16),
extract32(ver, 8, 8),
extract32(ver, 0, 8));
/* Reset device to get a clean state. */
regs->cc = cpu_to_le32(le32_to_cpu(regs->cc) & 0xFE);
/* Wait for CSTS.RDY = 0. */

1
block/trace-events
View File

@ -136,6 +136,7 @@ qed_aio_write_main(void *s, void *acb, int ret, uint64_t offset, size_t len) "s
# nvme.c
nvme_controller_capability_raw(uint64_t value) "0x%08"PRIx64
nvme_controller_capability(const char *desc, uint64_t value) "%s: %"PRIu64
nvme_controller_spec_version(uint32_t mjr, uint32_t mnr, uint32_t ter) "Specification supported: %u.%u.%u"
nvme_kick(void *s, unsigned q_index) "s %p q #%u"
nvme_dma_flush_queue_wait(void *s) "s %p"
nvme_error(int cmd_specific, int sq_head, int sqid, int cid, int status) "cmd_specific %d sq_head %d sqid %d cid %d status 0x%x"