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ocssd: check whether ctrlr support ocssd

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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: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/411590
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jakub Radtke <jakub.radtke@intel.com>
This commit is contained in:
Xiaodong Liu 2018-05-15 18:36:00 +08:00 committed by Jim Harris
parent f22755cfad
commit 5fc12ae9e2
2 changed files with 29 additions and 0 deletions
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8
include/spdk/nvme_ocssd.h
View File

@ -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.

21
lib/nvme/nvme_ctrlr_ocssd_cmd.c
View File

@ -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,