Commit 993c4a07 authored by Ben Walker's avatar Ben Walker Committed by Jim Harris
Browse files

nvme: Add a function to query controller memory buffer support 



Change-Id: Id539f4eaabe2038d4925eaa140864c0abd9b2649
Signed-off-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/442635


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarwuzhouhui <wuzhouhui@kingsoft.com>
parent 4ea3e632

include/spdk/nvme.h

+9 −0
Original line number Diff line number Diff line
@@ -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.

 *

lib/nvme/nvme_ctrlr.c

+18 −0
Original line number Diff line number Diff line
@@ -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)

{

lib/nvme/nvme_internal.h

+1 −0
Original line number Diff line number Diff line
@@ -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,