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SubjectRe: [PATCH 1/3] pci: Add Designated Vendor Specific Capability
On Tue, May 5, 2020 at 4:32 AM David E. Box <david.e.box@linux.intel.com> wrote:
>
> Add pcie dvsec extended capability id along with helper macros to

pcie -> PCIe

dvsec -> DVSEC (but here I'm not sure, what's official abbreviation for this?)

> retrieve information from the headers.



> https://members.pcisig.com/wg/PCI-SIG/document/12335

Perhaps

DocLink: ...

(as a tag)

>
> Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> ---
> include/uapi/linux/pci_regs.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
> index f9701410d3b5..c96f08d1e711 100644
> --- a/include/uapi/linux/pci_regs.h
> +++ b/include/uapi/linux/pci_regs.h
> @@ -720,6 +720,7 @@
> #define PCI_EXT_CAP_ID_DPC 0x1D /* Downstream Port Containment */
> #define PCI_EXT_CAP_ID_L1SS 0x1E /* L1 PM Substates */
> #define PCI_EXT_CAP_ID_PTM 0x1F /* Precision Time Measurement */
> +#define PCI_EXT_CAP_ID_DVSEC 0x23 /* Desinated Vendor-Specific */
> #define PCI_EXT_CAP_ID_DLF 0x25 /* Data Link Feature */
> #define PCI_EXT_CAP_ID_PL_16GT 0x26 /* Physical Layer 16.0 GT/s */
> #define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_PL_16GT
> @@ -1062,6 +1063,10 @@
> #define PCI_L1SS_CTL1_LTR_L12_TH_SCALE 0xe0000000 /* LTR_L1.2_THRESHOLD_Scale */
> #define PCI_L1SS_CTL2 0x0c /* Control 2 Register */
>
> +/* Designated Vendor-Specific (DVSEC, PCI_EXT_CAP_ID_DVSEC) */
> +#define PCI_DVSEC_HEADER1 0x4 /* Vendor-Specific Header1 */
> +#define PCI_DVSEC_HEADER2 0x8 /* Vendor-Specific Header2 */
> +
> /* Data Link Feature */
> #define PCI_DLF_CAP 0x04 /* Capabilities Register */
> #define PCI_DLF_EXCHANGE_ENABLE 0x80000000 /* Data Link Feature Exchange Enable */
> --
> 2.20.1
>


--
With Best Regards,
Andy Shevchenko

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