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nvme: Add a function to query controller memory buffer support

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Change-Id: Id539f4eaabe2038d4925eaa140864c0abd9b2649
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/442635
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: wuzhouhui <wuzhouhui@kingsoft.com>
This commit is contained in:
Ben Walker 2019-01-29 14:44:36 -07:00 committed by Jim Harris
parent 4ea3e63291
commit 993c4a0799
3 changed files with 28 additions and 0 deletions
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9
include/spdk/nvme.h
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@ -615,6 +615,15 @@ union spdk_nvme_cap_register spdk_nvme_ctrlr_get_regs_cap(struct spdk_nvme_ctrlr
*/
union spdk_nvme_vs_register spdk_nvme_ctrlr_get_regs_vs(struct spdk_nvme_ctrlr *ctrlr);
/**
* Get the NVMe controller CMBSZ (Controller Memory Buffer Size) register
*
* \param ctrlr Opaque handle to NVMe controller.
*
* \return the NVMe controller CMBSZ (Controller Memory Buffer Size) register.
*/
union spdk_nvme_cmbsz_register spdk_nvme_ctrlr_get_regs_cmbsz(struct spdk_nvme_ctrlr *ctrlr);
/**
* Get the number of namespaces for the given NVMe controller.
*

18
lib/nvme/nvme_ctrlr.c
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@ -78,6 +78,13 @@ nvme_ctrlr_set_cc(struct spdk_nvme_ctrlr *ctrlr, const union spdk_nvme_cc_regist
cc->raw);
}
int
nvme_ctrlr_get_cmbsz(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_cmbsz_register *cmbsz)
{
return nvme_transport_ctrlr_get_reg_4(ctrlr, offsetof(struct spdk_nvme_registers, cmbsz.raw),
&cmbsz->raw);
}
void
spdk_nvme_ctrlr_get_default_ctrlr_opts(struct spdk_nvme_ctrlr_opts *opts, size_t opts_size)
{
@ -2354,6 +2361,17 @@ union spdk_nvme_vs_register spdk_nvme_ctrlr_get_regs_vs(struct spdk_nvme_ctrlr *
return ctrlr->vs;
}
union spdk_nvme_cmbsz_register spdk_nvme_ctrlr_get_regs_cmbsz(struct spdk_nvme_ctrlr *ctrlr)
{
union spdk_nvme_cmbsz_register cmbsz;
if (nvme_ctrlr_get_cmbsz(ctrlr, &cmbsz)) {
cmbsz.raw = 0;
}
return cmbsz;
}
uint32_t
spdk_nvme_ctrlr_get_num_ns(struct spdk_nvme_ctrlr *ctrlr)
{

1
lib/nvme/nvme_internal.h
View File

@ -816,6 +816,7 @@ int nvme_ctrlr_submit_admin_request(struct spdk_nvme_ctrlr *ctrlr,
struct nvme_request *req);
int nvme_ctrlr_get_cap(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_cap_register *cap);
int nvme_ctrlr_get_vs(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_vs_register *vs);
int nvme_ctrlr_get_cmbsz(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_cmbsz_register *cmbsz);
void nvme_ctrlr_init_cap(struct spdk_nvme_ctrlr *ctrlr, const union spdk_nvme_cap_register *cap,
const union spdk_nvme_vs_register *vs);
int nvme_qpair_init(struct spdk_nvme_qpair *qpair, uint16_t id,