Commit 740b2f56 authored by James Bergsten's avatar James Bergsten Committed by Jim Harris
Browse files

nvme: spdk_nvme_ctrlr_get_registers 



This function returns a pointer to the PCIe I/O registers for a controller
or NULL if unsupported for this transport.

Used for PCIe only, other transports return NULL.

Use with caution.

Signed-off-by: default avatarJames Bergsten <jamesx.bergsten@intel.com>
Change-Id: I849f9de9ad259a65b1eef9c1237345eb7195b9bf
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/452927


Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent fb6fbf32

include/spdk/nvme.h

+12 −0
Original line number Diff line number Diff line
@@ -1504,6 +1504,18 @@ int spdk_nvme_ctrlr_update_firmware(struct spdk_nvme_ctrlr *ctrlr, void *payload 
				    int slot, enum spdk_nvme_fw_commit_action commit_action,

				    struct spdk_nvme_status *completion_status);



/**

 * Return virtual address of PCIe NVM I/O registers

 *

 * This function returns a pointer to the PCIe I/O registers for a controller

 * or NULL if unsupported for this transport.

 *

 * \param ctrlr Controller whose registers are to be accessed.

 *

 * \return Pointer to virtual address of register bank, or NULL.

 */

volatile struct spdk_nvme_registers *spdk_nvme_ctrlr_get_registers(struct spdk_nvme_ctrlr *ctrlr);



/**

 * Allocate an I/O buffer from the controller memory buffer (Experimental).

 *

lib/nvme/nvme_internal.h

+1 −0
Original line number Diff line number Diff line
@@ -989,6 +989,7 @@ struct spdk_nvme_ctrlr *spdk_nvme_get_ctrlr_by_trid_unsafe( 
	struct spdk_nvme_qpair *nvme_ ## name ## _ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid, const struct spdk_nvme_io_qpair_opts *opts); \

	void *nvme_ ## name ## _ctrlr_alloc_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, size_t size); \

	int nvme_ ## name ## _ctrlr_free_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, void *buf, size_t size); \

	volatile struct spdk_nvme_registers *nvme_ ## name ## _ctrlr_get_registers(struct spdk_nvme_ctrlr *ctrlr); \

	int nvme_ ## name ## _ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair); \

	int nvme_ ## name ## _ctrlr_reconnect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair); \

	void nvme_ ## name ## _qpair_abort_reqs(struct spdk_nvme_qpair *qpair, uint32_t dnr); \

lib/nvme/nvme_pcie.c

+8 −0
Original line number Diff line number Diff line
@@ -594,6 +594,14 @@ nvme_pcie_ctrlr_alloc_cmb(struct spdk_nvme_ctrlr *ctrlr, uint64_t length, uint64 
	return 0;

}



volatile struct spdk_nvme_registers *

nvme_pcie_ctrlr_get_registers(struct spdk_nvme_ctrlr *ctrlr)

{

	struct nvme_pcie_ctrlr *pctrlr = nvme_pcie_ctrlr(ctrlr);



	return pctrlr->regs;

}



void *

nvme_pcie_ctrlr_alloc_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, size_t size)

{

lib/nvme/nvme_rdma.c

+6 −0
Original line number Diff line number Diff line
@@ -1761,6 +1761,12 @@ nvme_rdma_ctrlr_get_max_sges(struct spdk_nvme_ctrlr *ctrlr) 
	return spdk_min(ctrlr->cdata.nvmf_specific.msdbd, NVME_RDMA_MAX_SGL_DESCRIPTORS);

}



volatile struct spdk_nvme_registers *

nvme_rdma_ctrlr_get_registers(struct spdk_nvme_ctrlr *ctrlr)

{

	return NULL;

}



void *

nvme_rdma_ctrlr_alloc_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, size_t size)

{

lib/nvme/nvme_tcp.c

+6 −0
Original line number Diff line number Diff line
@@ -1852,6 +1852,12 @@ nvme_tcp_ctrlr_get_max_sges(struct spdk_nvme_ctrlr *ctrlr) 
	return 1;

}



volatile struct spdk_nvme_registers *

nvme_tcp_ctrlr_get_registers(struct spdk_nvme_ctrlr *ctrlr)

{

	return NULL;

}



void *

nvme_tcp_ctrlr_alloc_cmb_io_buffer(struct spdk_nvme_ctrlr *ctrlr, size_t size)

{