On Wed, 14 Aug 2019 11:52:14 -0600
Alex Williamson <alex.williamson@xxxxxxxxxx> wrote:
> On Tue, 6 Aug 2019 11:30:00 +0200
> Cornelia Huck <cohuck@xxxxxxxxxx> wrote:
>
> > It is easy to miss already defined region types. Let's re-arrange
> > the definitions a bit and add more comments to make it hopefully
> > a bit clearer.
> >
> > No functional change.
> >
> > Signed-off-by: Cornelia Huck <cohuck@xxxxxxxxxx>
> > ---
> > v1 -> v2:
> > - moved all pci subtypes together
> > - tweaked comments a bit more
> > ---
> > include/uapi/linux/vfio.h | 45 ++++++++++++++++++++++-----------------
> > 1 file changed, 26 insertions(+), 19 deletions(-)
>
> Thanks Connie! This looks good to me, I'll queue it for v5.4. Thanks,
Thanks for your patience, Connie. This is now in the vfio next branch
for v5.4. Thanks,
Alex
> > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
> > index 8f10748dac79..e809b22f6a60 100644
> > --- a/include/uapi/linux/vfio.h
> > +++ b/include/uapi/linux/vfio.h
> > @@ -295,15 +295,38 @@ struct vfio_region_info_cap_type {
> > __u32 subtype; /* type specific */
> > };
> >
> > +/*
> > + * List of region types, global per bus driver.
> > + * If you introduce a new type, please add it here.
> > + */
> > +
> > +/* PCI region type containing a PCI vendor part */
> > #define VFIO_REGION_TYPE_PCI_VENDOR_TYPE (1 << 31)
> > #define VFIO_REGION_TYPE_PCI_VENDOR_MASK (0xffff)
> > +#define VFIO_REGION_TYPE_GFX (1)
> > +#define VFIO_REGION_TYPE_CCW (2)
> > +
> > +/* sub-types for VFIO_REGION_TYPE_PCI_* */
> >
> > -/* 8086 Vendor sub-types */
> > +/* 8086 vendor PCI sub-types */
> > #define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION (1)
> > #define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG (2)
> > #define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG (3)
> >
> > -#define VFIO_REGION_TYPE_GFX (1)
> > +/* 10de vendor PCI sub-types */
> > +/*
> > + * NVIDIA GPU NVlink2 RAM is coherent RAM mapped onto the host address space.
> > + */
> > +#define VFIO_REGION_SUBTYPE_NVIDIA_NVLINK2_RAM (1)
> > +
> > +/* 1014 vendor PCI sub-types */
> > +/*
> > + * IBM NPU NVlink2 ATSD (Address Translation Shootdown) register of NPU
> > + * to do TLB invalidation on a GPU.
> > + */
> > +#define VFIO_REGION_SUBTYPE_IBM_NVLINK2_ATSD (1)
> > +
> > +/* sub-types for VFIO_REGION_TYPE_GFX */
> > #define VFIO_REGION_SUBTYPE_GFX_EDID (1)
> >
> > /**
> > @@ -353,25 +376,9 @@ struct vfio_region_gfx_edid {
> > #define VFIO_DEVICE_GFX_LINK_STATE_DOWN 2
> > };
> >
> > -#define VFIO_REGION_TYPE_CCW (2)
> > -/* ccw sub-types */
> > +/* sub-types for VFIO_REGION_TYPE_CCW */
> > #define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD (1)
> >
> > -/*
> > - * 10de vendor sub-type
> > - *
> > - * NVIDIA GPU NVlink2 RAM is coherent RAM mapped onto the host address space.
> > - */
> > -#define VFIO_REGION_SUBTYPE_NVIDIA_NVLINK2_RAM (1)
> > -
> > -/*
> > - * 1014 vendor sub-type
> > - *
> > - * IBM NPU NVlink2 ATSD (Address Translation Shootdown) register of NPU
> > - * to do TLB invalidation on a GPU.
> > - */
> > -#define VFIO_REGION_SUBTYPE_IBM_NVLINK2_ATSD (1)
> > -
> > /*
> > * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
> > * which allows direct access to non-MSIX registers which happened to be within
>
