10-Bit Tag capability, introduced in PCIe-4.0 increases the total Tag field size from 8 bits to 10 bits. For platforms where the RC supports 10-Bit Tag Completer capability, it is highly recommended for platform firmware or operating software that configures PCIe hierarchies to Set the 10-Bit Tag Requester Enable bit automatically in Endpoints with 10-Bit Tag Requester capability. This enables the important class of 10-Bit Tag capable adapters that send Memory Read Requests only to host memory. This patchset is to enable 10-bits for PCIe EP devices. Dongdong Liu (3): PCI: Add 10-Bit Tag register definitions PCI: Enable 10-bit tags support for PCIe devices PCI/IOV: Enable 10-bit tags support for PCIe VF devices drivers/pci/iov.c | 8 ++++++++ drivers/pci/probe.c | 39 +++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 1 + include/uapi/linux/pci_regs.h | 5 +++++ 4 files changed, 53 insertions(+) -- 1.9.1
