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nvme: Publish the drive's capabilities

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Add cap_lo and cap_hi sysctl to each nvme drive. This publishes the raw
capabilities of the drive. Now we can only discover these with
bootverbose.

Sponsored by:		Netflix
This commit is contained in:
Warner Losh 2022-03-29 17:03:47 -06:00
parent 6af6a52ee4
commit 161fcf7994
1 changed files with 8 additions and 0 deletions
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8
sys/dev/nvme/nvme_sysctl.c
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@ -372,6 +372,14 @@ nvme_sysctl_initialize_ctrlr(struct nvme_controller *ctrlr)
"reset_stats", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_MPSAFE, ctrlr,
0, nvme_sysctl_reset_stats, "IU", "Reset statistics to zero");
SYSCTL_ADD_UINT(ctrlr_ctx, ctrlr_list, OID_AUTO, "cap_lo",
CTLFLAG_RD, &ctrlr->cap_lo, 0,
"Low 32-bits of capacities for the drive");
SYSCTL_ADD_UINT(ctrlr_ctx, ctrlr_list, OID_AUTO, "cap_hi",
CTLFLAG_RD, &ctrlr->cap_hi, 0,
"Hi 32-bits of capacities for the drive");
que_tree = SYSCTL_ADD_NODE(ctrlr_ctx, ctrlr_list, OID_AUTO, "adminq",
CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Admin Queue");