From: Jiang Liu <liu...@gmail.com> As suggested by Bjorn Helgaas and Don Dutile in threads http://www.spinics.net/lists/linux-pci/msg15663.html, we could improve access to PCIe capabilities register in to way: 1) cache content of PCIe Capabilities Register into struct pce_dev to avoid repeatedly reading this register because it's read only. 2) provide access functions for PCIe Capabilities registers to hide differences among PCIe base specifications, so the caller don't need to handle those differences.
This patch set applies to git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git pci-next And you could pull the change set from https://github.com/jiangliu/linux.git topic/pcie-cap v2: 1) change return value to 0 when the register is not implemented by V1 PCIe devices. 2) Change all driver in the source tree to use the new interfaces. v3: 1) be more aggresive to remoce if (pci_is_pcie(dev)) check according to Don's suggestion. 2) Don't cache MSI/MSI-x information in PCIe capabilities flag register according to Kenji's suggestion. 3) add new pci_pcie_capability_change_word/dword() to reduce duplicated code. Jiang Liu (29): PCI: add PCIe capabilities access functions to hide differences among PCIe specs PCI/core: use PCIe capabilities access functions to simplify implementation PCI/hotplug: use PCIe capabilities access functions to simplify implementation PCI/portdrv: use PCIe capabilities access functions to simplify implementation PCI/pciehp: use PCIe capabilities access functions to simplify implementation PCI/PME: use PCIe capabilities access functions to simplify implementation PCI/AER: use PCIe capabilities access functions to simplify implementation PCI/ASPM: use PCIe capabilities access functions to simplify implementation PCI/ARM: use PCIe capabilities access functions to simplify implementation PCI/MIPS: use PCIe capabilities access functions to simplify implementation PCI/tile: use PCIe capabilities access functions to simplify implementation PCI/r8169: use PCIe capabilities access functions to simplify implementation PCI/broadcom: use PCIe capabilities access functions to simplify implementation PCI/igb: use PCIe capabilities access functions to simplify implementation PCI/vxge: use PCIe capabilities access functions to simplify implementation PCI/mlx4: use PCIe capabilities access functions to simplify implementation PCI/niu: use PCIe capabilities access functions to simplify implementation PCI/myri10ge: use PCIe capabilities access functions to simplify implementation PCI/chelsio: use PCIe capabilities access functions to simplify implementation PCI/atl1c: use PCIe capabilities access functions to simplify implementation PCI/ath9k: use PCIe capabilities access functions to simplify implementation PCI/iwl: use PCIe capabilities access functions to simplify implementation PCI/mthca: use PCIe capabilities access functions to simplify implementation PCI/qib: use PCIe capabilities access functions to simplify implementation PCI/qla: use PCIe capabilities access functions to simplify implementation PCI/radeon: use PCIe capabilities access functions to simplify implementation PCI/tsi721: use PCIe capabilities access functions to simplify implementation PCI/et131x: use PCIe capabilities access functions to simplify implementation PCI/rtl8192e: use PCIe capabilities access functions to simplify implementation Yijing Wang (3): PCI: add pcie_flags_reg into struct pci_dev to cache PCIe capabilities register PCI: introduce pci_pcie_type(dev) to replace pci_dev->pcie_type PCI: remove unused field pcie_type from struct pci_dev arch/arm/mach-tegra/pcie.c | 13 +- arch/mips/pci/pci-octeon.c | 15 +- arch/powerpc/platforms/powernv/pci-ioda.c | 2 +- arch/tile/kernel/pci.c | 25 +- drivers/gpu/drm/radeon/evergreen.c | 10 +- drivers/infiniband/hw/mthca/mthca_reset.c | 8 +- drivers/infiniband/hw/qib/qib_pcie.c | 40 +-- drivers/iommu/intel-iommu.c | 6 +- drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 2 +- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 25 +- drivers/net/ethernet/broadcom/tg3.c | 60 ++-- drivers/net/ethernet/chelsio/cxgb3/t3_hw.c | 19 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 11 +- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 10 +- drivers/net/ethernet/intel/e1000e/netdev.c | 27 +- drivers/net/ethernet/intel/igb/igb_main.c | 12 +- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +- drivers/net/ethernet/mellanox/mlx4/reset.c | 8 +- drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 39 +-- drivers/net/ethernet/neterion/vxge/vxge-config.c | 4 +- .../net/ethernet/qlogic/netxen/netxen_nic_main.c | 2 +- drivers/net/ethernet/realtek/r8169.c | 44 +-- drivers/net/ethernet/sun/niu.c | 18 +- drivers/net/wireless/ath/ath9k/pci.c | 21 +- drivers/net/wireless/iwlegacy/common.h | 5 +- drivers/net/wireless/iwlwifi/iwl-trans-pcie.c | 4 +- drivers/net/wireless/rtlwifi/pci.c | 8 +- drivers/pci/access.c | 195 ++++++++++++ drivers/pci/hotplug/pciehp_acpi.c | 6 +- drivers/pci/hotplug/pciehp_hpc.c | 12 +- drivers/pci/hotplug/pcihp_slot.c | 20 +- drivers/pci/iov.c | 6 +- drivers/pci/pci.c | 324 ++++---------------- drivers/pci/pcie/aer/aer_inject.c | 2 +- drivers/pci/pcie/aer/aerdrv.c | 24 +- drivers/pci/pcie/aer/aerdrv_acpi.c | 2 +- drivers/pci/pcie/aer/aerdrv_core.c | 47 +-- drivers/pci/pcie/aspm.c | 111 +++---- drivers/pci/pcie/pme.c | 28 +- drivers/pci/pcie/portdrv_bus.c | 2 +- drivers/pci/pcie/portdrv_core.c | 19 +- drivers/pci/pcie/portdrv_pci.c | 18 +- drivers/pci/probe.c | 29 +- drivers/pci/quirks.c | 9 +- drivers/pci/search.c | 2 +- drivers/rapidio/devices/tsi721.c | 19 +- drivers/scsi/qla2xxx/qla_init.c | 4 +- drivers/scsi/qla2xxx/qla_nx.c | 8 +- drivers/scsi/qla4xxx/ql4_nx.c | 4 +- drivers/staging/et131x/et131x.c | 19 +- drivers/staging/rtl8192e/rtl8192e/rtl_pci.c | 8 +- include/linux/pci.h | 21 +- include/linux/pci_regs.h | 2 + 53 files changed, 553 insertions(+), 828 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html 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