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external_code/nvme: introduced nvme_ctrlr_get_data()

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This function allows the user to retrieve the controller's identify
data.  Currently, that buffer is zeroed, but it'll be populated by the
identify command.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I91a99feef25ecf94c43cf144c12ac3c541c76cd9
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6674
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Konrad Sztyber 2021-02-24 07:46:31 +01:00 committed by Tomasz Zawadzki
parent 5555513653
commit 48a89ec7d3
2 changed files with 32 additions and 0 deletions
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19
test/external_code/nvme/nvme.c
View File

@ -103,6 +103,8 @@ struct nvme_ctrlr {
uint32_t page_size;
/* Admin queue pair */
struct nvme_qpair *admin_qpair;
/* Controller's identify data */
struct spdk_nvme_ctrlr_data *cdata;
/* State of the controller */
enum nvme_ctrlr_state state;
TAILQ_ENTRY(nvme_ctrlr) tailq;
@ -332,11 +334,21 @@ pcie_enum_cb(void *ctx, struct spdk_pci_device *pci_dev)
ctrlr->page_size = 1 << (12 + cap.bits.mpsmin);
ctrlr->doorbell_stride_u32 = 1 << cap.bits.dstrd;
ctrlr->cdata = spdk_zmalloc(sizeof(*ctrlr->cdata), ctrlr->page_size, NULL,
SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_DMA);
if (!ctrlr->cdata) {
SPDK_ERRLOG("Failed to allocate identify data for NVMe controller: %s\n", addr);
spdk_pci_device_unclaim(pci_dev);
free(ctrlr);
return -1;
}
/* Initialize admin queue pair with minimum number of entries (2) */
ctrlr->admin_qpair = init_qpair(ctrlr, 0, SPDK_NVME_ADMIN_QUEUE_MIN_ENTRIES);
if (!ctrlr->admin_qpair) {
SPDK_ERRLOG("Failed to initialize admin queue pair for controller: %s\n", addr);
spdk_pci_device_unclaim(pci_dev);
spdk_free(ctrlr->cdata);
free(ctrlr);
return -1;
}
@ -418,6 +430,7 @@ free_ctrlr(struct nvme_ctrlr *ctrlr)
spdk_pci_device_unclaim(ctrlr->pci_device);
spdk_pci_device_detach(ctrlr->pci_device);
free_qpair(ctrlr->admin_qpair);
spdk_free(ctrlr->cdata);
free(ctrlr);
}
@ -497,4 +510,10 @@ nvme_detach(struct nvme_ctrlr *ctrlr)
free_ctrlr(ctrlr);
}
const struct spdk_nvme_ctrlr_data *
nvme_ctrlr_get_data(struct nvme_ctrlr *ctrlr)
{
return ctrlr->cdata;
}
SPDK_LOG_REGISTER_COMPONENT(nvme_external)

13
test/external_code/nvme/nvme.h
View File

@ -35,6 +35,7 @@
#define EXTERNAL_NVME_H
#include "spdk/env.h"
#include "spdk/nvme_spec.h"
struct nvme_ctrlr;
@ -86,4 +87,16 @@ struct nvme_ctrlr *nvme_connect(struct spdk_pci_addr *addr);
*/
void nvme_detach(struct nvme_ctrlr *ctrlr);
/**
* Get the identify controller data as defined by the NVMe specification.
*
* This function is thread safe and can be called at any point while the controller
* is attached to the SPDK NVMe driver.
*
* \param ctrlr Opaque handle to NVMe controller.
*
* \return pointer to the identify controller data.
*/
const struct spdk_nvme_ctrlr_data *nvme_ctrlr_get_data(struct nvme_ctrlr *ctrlr);
#endif /* EXTERNAL_NVME_H */