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env: Add spdk_pci_get_device

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This function will return a device handle from a pci
address.

Change-Id: I323d92c71014ef571f3df9f19c2ec887844707e8
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Ben Walker 2016-12-09 12:30:57 -07:00 committed by Daniel Verkamp
parent 5bc79e9c3d
commit 9511b2a20b
2 changed files with 30 additions and 0 deletions
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2
include/spdk/env.h
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@ -186,6 +186,8 @@ typedef int (*spdk_pci_enum_cb)(void *enum_ctx, struct spdk_pci_device *pci_dev)
int spdk_pci_nvme_enumerate(spdk_pci_enum_cb enum_cb, void *enum_ctx);
int spdk_pci_ioat_enumerate(spdk_pci_enum_cb enum_cb, void *enum_ctx);
struct spdk_pci_device *spdk_pci_get_device(struct spdk_pci_addr *pci_addr);
int spdk_pci_device_map_bar(struct spdk_pci_device *dev, uint32_t bar,
void **mapped_addr, uint64_t *phys_addr, uint64_t *size);
int spdk_pci_device_unmap_bar(struct spdk_pci_device *dev, uint32_t bar, void *addr);

28
lib/env_dpdk/pci.c
View File

@ -141,6 +141,34 @@ spdk_pci_enumerate(struct spdk_pci_enum_ctx *ctx,
return 0;
}
struct spdk_pci_device *
spdk_pci_get_device(struct spdk_pci_addr *pci_addr)
{
struct rte_pci_device *dev;
struct rte_pci_addr addr;
int rc;
addr.domain = pci_addr->domain;
addr.bus = pci_addr->bus;
addr.devid = pci_addr->dev;
addr.function = pci_addr->func;
TAILQ_FOREACH(dev, &pci_device_list, next) {
rc = rte_eal_compare_pci_addr(&dev->addr, &addr);
if (rc < 0) {
continue;
}
if (rc == 0) {
return (struct spdk_pci_device *)dev;
} else {
break;
}
}
return NULL;
}
int
spdk_pci_device_map_bar(struct spdk_pci_device *device, uint32_t bar,
void **mapped_addr, uint64_t *phys_addr, uint64_t *size)