On Thu, Aug 20, 2020 at 21:59:42, Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: > On Thu, Aug 13, 2020 at 04:08:50PM +0200, Gustavo Pimentel wrote: > > Add #defines for the max payload size options. No functional change > > intended. > > > > Cc: Joao Pinto <jpinto@xxxxxxxxxxxx> > > Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx> > > --- > > include/uapi/linux/pci_regs.h | 6 ++++++ > > 1 file changed, 6 insertions(+) > > > > diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h > > index f970141..db625bd 100644 > > --- a/include/uapi/linux/pci_regs.h > > +++ b/include/uapi/linux/pci_regs.h > > @@ -503,6 +503,12 @@ > > #define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */ > > #define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */ > > #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_128B 0x0000 /* 128 Bytes */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_256B 0x0020 /* 256 Bytes */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_512B 0x0040 /* 512 Bytes */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_1024B 0x0060 /* 1024 Bytes */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_2048B 0x0080 /* 2048 Bytes */ > > +#define PCI_EXP_DEVCTL_PAYLOAD_4096B 0x00a0 /* 4096 Bytes */ > > I would apply this if we actually *used* these anywhere, but I'm not > sure it's worth adding them just as documentation. Hi Bjorn, I'll be using that with a driver that I developed. I didn't send the driver yet, because I'm still waiting for a final validation from a colleague that is on vacation. If you want I can include this patch with the driver patch set. -Gustavo > > > #define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */ > > #define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */ > > #define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */ > > -- > > 2.7.4 > >
