@@ -725,6 +725,16 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
* Initialization". */
cap = le64_to_cpu(regs->cap);
+ trace_nvme_controller_capability("Maximum Queue Entries Supported",
+ NVME_CAP_MQES(cap));
+ trace_nvme_controller_capability("Contiguous Queues Required",
+ NVME_CAP_CQR(cap));
+ trace_nvme_controller_capability("Subsystem Reset Supported",
+ NVME_CAP_NSSRS(cap));
+ trace_nvme_controller_capability("Memory Page Size Minimum",
+ NVME_CAP_MPSMIN(cap));
+ trace_nvme_controller_capability("Memory Page Size Maximum",
+ NVME_CAP_MPSMAX(cap));
if (!NVME_CAP_CSS(cap)) {
error_setg(errp, "Device doesn't support NVMe command set");
ret = -EINVAL;
@@ -134,6 +134,7 @@ qed_aio_write_postfill(void *s, void *acb, uint64_t start, size_t len, uint64_t
qed_aio_write_main(void *s, void *acb, int ret, uint64_t offset, size_t len) "s %p acb %p ret %d offset %"PRIu64" len %zu"
# nvme.c
+nvme_controller_capability(const char *desc, uint64_t value) "%s: %"PRIu64
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"
Controllers have different capabilities and report them in the CAP register. We are particularly interested by the page size limits. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> --- block/nvme.c | 10 ++++++++++ block/trace-events | 1 + 2 files changed, 11 insertions(+)