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| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2020-10-29 10:32:45 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-11-03 19:06:20 +0000 |
| commit | 15b2260bef333762904535affa7fb30390b3fb98 (patch) | |
| tree | fc97846f5b5fcdf8dffb5a3b1717f89572f58f20 /block/nvme.c | |
| parent | 58ad6ae0cbad626bd574bc1347f210a35a8316eb (diff) | |
| download | qemu-15b2260bef333762904535affa7fb30390b3fb98.zip | |
block/nvme: Trace controller capabilities
Controllers have different capabilities and report them in the
CAP register. We are particularly interested by the page size
limits.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20201029093306.1063879-5-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Diffstat (limited to 'block/nvme.c')
| -rw-r--r-- | block/nvme.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/block/nvme.c b/block/nvme.c index 6f1d7f9b2a..361b5772b7 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -727,6 +727,19 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, * Initialization". */ cap = le64_to_cpu(regs->cap); + trace_nvme_controller_capability_raw(cap); + trace_nvme_controller_capability("Maximum Queue Entries Supported", + 1 + NVME_CAP_MQES(cap)); + trace_nvme_controller_capability("Contiguous Queues Required", + NVME_CAP_CQR(cap)); + trace_nvme_controller_capability("Doorbell Stride", + 2 << (2 + NVME_CAP_DSTRD(cap))); + trace_nvme_controller_capability("Subsystem Reset Supported", + NVME_CAP_NSSRS(cap)); + trace_nvme_controller_capability("Memory Page Size Minimum", + 1 << (12 + NVME_CAP_MPSMIN(cap))); + trace_nvme_controller_capability("Memory Page Size Maximum", + 1 << (12 + NVME_CAP_MPSMAX(cap))); if (!NVME_CAP_CSS(cap)) { error_setg(errp, "Device doesn't support NVMe command set"); ret = -EINVAL; |