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lib/env_dpdk: Allow iterating over all detected PCI devices

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Added spdk_pci_get_first_device() and
spdk_pci_get_next_device() to iterate
over all devices on g_pci_devices list.

Change-Id: I65079fb3e274195707dee64bc1fb8b4b72d07352
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450924
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Wojciech Malikowski 2019-04-11 05:43:50 -04:00 committed by Ben Walker
parent b9e8dc71f7
commit f056bc6524
2 changed files with 31 additions and 0 deletions
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19
include/spdk/env.h
View File

@ -728,6 +728,25 @@ struct spdk_pci_driver *spdk_pci_virtio_get_driver(void);
*/
int spdk_pci_enumerate(struct spdk_pci_driver *driver, spdk_pci_enum_cb enum_cb, void *enum_ctx);
/**
* Begin iterating over enumerated PCI device by calling this function to get
* the first PCI device. If there no PCI devices enumerated, return NULL
*
* \return a pointer to a PCI device on success, NULL otherwise.
*/
struct spdk_pci_device *spdk_pci_get_first_device(void);
/**
* Continue iterating over enumerated PCI devices.
* If no additional PCI devices, return NULL
*
* \param prev Previous PCI device returned from \ref spdk_pci_get_first_device
* or \ref spdk_pci_get_next_device
*
* \return a pointer to the next PCI device on success, NULL otherwise.
*/
struct spdk_pci_device *spdk_pci_get_next_device(struct spdk_pci_device *prev);
/**
* Map a PCI BAR in the current process.
*

12
lib/env_dpdk/pci.c
View File

@ -464,6 +464,18 @@ spdk_pci_enumerate(struct spdk_pci_driver *driver,
return 0;
}
struct spdk_pci_device *
spdk_pci_get_first_device(void)
{
return TAILQ_FIRST(&g_pci_devices);
}
struct spdk_pci_device *
spdk_pci_get_next_device(struct spdk_pci_device *prev)
{
return TAILQ_NEXT(prev, internal.tailq);
}
int
spdk_pci_device_map_bar(struct spdk_pci_device *dev, uint32_t bar,
void **mapped_addr, uint64_t *phys_addr, uint64_t *size)