pci defines PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() interfaces, however,
it doesn't have interfaces to return PCI bus and PCI device id. Drivers
(AMD IOMMU, and AER) have module specific definitions for PCI_BUS() and
AMD_IOMMU driver also has a module specific interface to calculate PCI
device id from bus number and devfn.
This patch set adds PCI_BUS_NUM(), and PCI_DEVID() to pci.h, changes AER
to use PCI_BUS_NUM() from pci and remove local PCI_BUS() define. Changes
AMD_IOMMU driver to use PCI_BUS_NUM() and PCI_DEVID() from pci and remove
local PCI_BUS() define and local PCI_DEVID() implementation.
Files changed:
[PATCH v2 1/4] pci: Add PCI_BUS_NUM() and PCI_DEVID() interfaces to return bus
number and device id
include/linux/pci.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
[PATCH v2 2/4] pci/aer: Remove local PCI_BUS() define and use PCI_BUS_NUM()
from pci
drivers/pci/pcie/aer/aerdrv_core.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
[PATCH v2 3/4] iommu/amd: Remove local PCI_BUS() define and use PCI_BUS_NUM()
from pci
drivers/iommu/amd_iommu.c | 12 ++++++------
drivers/iommu/amd_iommu_init.c | 34 +++++++++++++++++-----------------
drivers/iommu/amd_iommu_types.h | 4 +---
3 files changed, 24 insertions(+), 26 deletions(-)
[PATCH v2 4/4] iommu/amd: Remove calc_devid() and use PCI_DEVID() from pci
(no change to this patch - but tagging it v2 for clarity)
drivers/iommu/amd_iommu.c | 2 +-
drivers/iommu/amd_iommu_init.c | 6 +++---
drivers/iommu/amd_iommu_types.h | 7 -------
3 files changed, 4 insertions(+), 11 deletions(-)
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