On Fri, 23 Aug 2024 23:21:17 +1000 Alexey Kardashevskiy <aik@xxxxxxx> wrote: > A new bit #30 from the PCI Express Device Capabilities Register is defined > in PCIe 6.1 as "TEE Device Interface Security Protocol (TDISP)". No it isn't. TEE-IO supported - When Set, this bit indicates the Function implements the TEE-IO functionality as described by .... So it is defined as TEE-IO not TDISP even though that definition is in the TDISP section fo the spec. As Bjorn said, spec reference. Jonathan > > Define the macro. > > Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxx> > --- > include/uapi/linux/pci_regs.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h > index 94c00996e633..0011a301b8c5 100644 > --- a/include/uapi/linux/pci_regs.h > +++ b/include/uapi/linux/pci_regs.h > @@ -498,6 +498,7 @@ > #define PCI_EXP_DEVCAP_PWR_VAL 0x03fc0000 /* Slot Power Limit Value */ > #define PCI_EXP_DEVCAP_PWR_SCL 0x0c000000 /* Slot Power Limit Scale */ > #define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */ > +#define PCI_EXP_DEVCAP_TEE_IO 0x40000000 /* TEE-IO Supported (TDISP) */ > #define PCI_EXP_DEVCTL 0x08 /* Device Control */ > #define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */ > #define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */
