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nvme: add API to get CAP and VS registers

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This is intended to be used for examples/nvme/identify and similar
diagnostic utilities.

Change-Id: Ib2f941e9af7a3fb7555865ef253742e30ccad2b5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-07-06 14:55:28 -07:00
parent a9df326a0e
commit a464f1394e
2 changed files with 26 additions and 0 deletions
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10
include/spdk/nvme.h
View File

@ -163,6 +163,16 @@ int spdk_nvme_ctrlr_reset(struct spdk_nvme_ctrlr *ctrlr);
*/
const struct spdk_nvme_ctrlr_data *spdk_nvme_ctrlr_get_data(struct spdk_nvme_ctrlr *ctrlr);
/**
* \brief Get the NVMe controller CAP (Capabilities) register.
*/
union spdk_nvme_cap_register spdk_nvme_ctrlr_get_regs_cap(struct spdk_nvme_ctrlr *ctrlr);
/**
* \brief Get the NVMe controller VS (Version) register.
*/
union spdk_nvme_vs_register spdk_nvme_ctrlr_get_regs_vs(struct spdk_nvme_ctrlr *ctrlr);
/**
* \brief Get the number of namespaces for the given NVMe controller.
*

16
lib/nvme/nvme_ctrlr.c
View File

@ -1175,6 +1175,22 @@ spdk_nvme_ctrlr_get_data(struct spdk_nvme_ctrlr *ctrlr)
return &ctrlr->cdata;
}
union spdk_nvme_cap_register spdk_nvme_ctrlr_get_regs_cap(struct spdk_nvme_ctrlr *ctrlr)
{
union spdk_nvme_cap_register cap;
cap.raw = nvme_mmio_read_8(ctrlr, cap.raw);
return cap;
}
union spdk_nvme_vs_register spdk_nvme_ctrlr_get_regs_vs(struct spdk_nvme_ctrlr *ctrlr)
{
union spdk_nvme_vs_register vs;
vs.raw = nvme_mmio_read_4(ctrlr, vs.raw);
return vs;
}
uint32_t
spdk_nvme_ctrlr_get_num_ns(struct spdk_nvme_ctrlr *ctrlr)
{