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Date: Thu, 30 Sep 2021 18:28:11 -0700 From: "David E. Box" <david.e.box@...ux.intel.com> To: lee.jones@...aro.org, hdegoede@...hat.com, mgross@...ux.intel.com, bhelgaas@...gle.com, gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com, srinivas.pandruvada@...el.com Cc: "David E. Box" <david.e.box@...ux.intel.com>, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, platform-driver-x86@...r.kernel.org, linux-pci@...r.kernel.org Subject: [PATCH 1/5] PCI: Add #defines for accessing PCIe DVSEC fields Add #defines for accessing Vendor ID, Revision, Length, and ID offsets in the Designated Vendor Specific Extended Capability (DVSEC). Defined in PCIe r5.0, sec 7.9.6. Signed-off-by: David E. Box <david.e.box@...ux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@...gle.com> --- V1: s/PCIE/PCIe in commit message as requested by Bjorn include/uapi/linux/pci_regs.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index e709ae8235e7..57ee51f19283 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -1080,7 +1080,11 @@ /* Designated Vendor-Specific (DVSEC, PCI_EXT_CAP_ID_DVSEC) */ #define PCI_DVSEC_HEADER1 0x4 /* Designated Vendor-Specific Header1 */ +#define PCI_DVSEC_HEADER1_VID(x) ((x) & 0xffff) +#define PCI_DVSEC_HEADER1_REV(x) (((x) >> 16) & 0xf) +#define PCI_DVSEC_HEADER1_LEN(x) (((x) >> 20) & 0xfff) #define PCI_DVSEC_HEADER2 0x8 /* Designated Vendor-Specific Header2 */ +#define PCI_DVSEC_HEADER2_ID(x) ((x) & 0xffff) /* Data Link Feature */ #define PCI_DLF_CAP 0x04 /* Capabilities Register */ -- 2.25.1
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