Commit 5fc12ae9 authored by Xiaodong Liu's avatar Xiaodong Liu Committed by Jim Harris
Browse files

ocssd: check whether ctrlr support ocssd 



There isn't a standardized way to identify Open-Channel
SSD, different verdors may have different conditions.
Here just take the Qemu simulated OCSSD device as a
start.

Change-Id: I1aceaac09db438c203875bcf37badd542618bdd7
Signed-off-by: default avatarXiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/411590


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarZiye Yang <optimistyzy@gmail.com>
Reviewed-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarJakub Radtke <jakub.radtke@intel.com>
parent f22755cf

include/spdk/nvme_ocssd.h

+8 −0
Original line number Diff line number Diff line
@@ -48,6 +48,14 @@ extern "C" { 
#include "spdk/nvme.h"

#include "spdk/nvme_ocssd_spec.h"



/**

 * \brief Determine if OpenChannel is supported by the given NVMe controller.

 * \param ctrlr NVMe controller to check.

 *

 * \return true if support OpenChannel

 */

bool spdk_nvme_ctrlr_is_ocssd_supported(struct spdk_nvme_ctrlr *ctrlr);



/**

 * \brief Identify geometry of the given namespace.

 * \param ctrlr NVMe controller to query.

lib/nvme/nvme_ctrlr_ocssd_cmd.c

+21 −0
Original line number Diff line number Diff line
@@ -34,6 +34,27 @@ 
#include "spdk/nvme_ocssd.h"

#include "nvme_internal.h"



bool

spdk_nvme_ctrlr_is_ocssd_supported(struct spdk_nvme_ctrlr *ctrlr)

{

	if (ctrlr->quirks & NVME_QUIRK_OCSSD) {

		// TODO: There isn't a standardized way to identify Open-Channel SSD

		// different verdors may have different conditions.



		/*

		 * Current QEMU OpenChannel Device needs to check nsdata->vs[0].

		 * Here check nsdata->vs[0] of the first namespace.

		 */

		if (ctrlr->cdata.vid == SPDK_PCI_VID_CNEXLABS) {

			if (ctrlr->num_ns && ctrlr->nsdata[0].vendor_specific[0] == 0x1) {

				return true;

			}

		}

	}

	return false;

}





int

spdk_nvme_ocssd_ctrlr_cmd_geometry(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,

				   void *payload, uint32_t payload_size,