10-Bit Tag capability, introduced in PCIe-4.0 increases the total Tag field size from 8 bits to 10 bits. This patchset is to enable 10-Bit tag for PCIe EP devices (include VF) and RP devices. V2->V3: - Use cached Device Capabilities Register suggested by Christoph. - Fix code style to avoid > 80 char lines. - Renamve devcap2 to pcie_devcap2. V1->V2: Fix some comments by Christoph. - Store the devcap2 value in the pci_dev instead of reading it multiple times. - Change pci_info to pci_dbg to avoid the noisy log. - Rename ext_10bit_tag_comp_path to ext_10bit_tag. - Fix the compile error. - Rebased on v5.13-rc1. Dongdong Liu (6): PCI: Use cached Device Capabilities Register PCI: Use cached Device Capabilities 2 Register PCI: Add 10-Bit Tag register definitions PCI: Enable 10-Bit tag support for PCIe Endpoint devices PCI/IOV: Enable 10-Bit tag support for PCIe VF devices PCI: Enable 10-Bit tag support for PCIe RP devices drivers/media/pci/cobalt/cobalt-driver.c | 4 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 4 +- drivers/pci/iov.c | 8 +++ drivers/pci/pci.c | 13 ++--- drivers/pci/pcie/aspm.c | 11 ++-- drivers/pci/pcie/portdrv_pci.c | 75 +++++++++++++++++++++++++ drivers/pci/probe.c | 65 ++++++++++++++++----- drivers/pci/quirks.c | 3 +- include/linux/pci.h | 5 ++ include/uapi/linux/pci_regs.h | 5 ++ 10 files changed, 156 insertions(+), 37 deletions(-) -- 2.7.4
