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

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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"