[PATCH] dri2proto: add prime protocol support. (v2.1)

[Kristian Høgsberg]

On Fri, Jul 6, 2012 at 6:27 AM, Dave Airlie <airlied at gmail.com> wrote:
> From: Dave Airlie <airlied at redhat.com>
>
> So we reserve bits 16->19 for offload device ids, this means we can
> have 6 offload devices, which is plenty for now, and we can bump
> this further later without fear.
>
> v2: I suck at maths, that is all. Fixed up the maths to match reality.
> v2.1: fix typo

Looks fine to me.  Is there a version bump that goes along with this
so drivers can know they can ask for prime devices or should they just
try and expect a NULL reply if it's not available?

Reviewed-by: Kristian Høgsberg <krh at bitplanet.net>

> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
>  dri2tokens.h |    5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/dri2tokens.h b/dri2tokens.h
> index 16c9008..bdca866 100644
> --- a/dri2tokens.h
> +++ b/dri2tokens.h
> @@ -45,6 +45,11 @@
>  #define DRI2BufferDepthStencil         9
>  #define DRI2BufferHiz                  10
>
> +/* keep bits 16 and above for prime IDs */
> +#define DRI2DriverPrimeMask             7 /* 0 - 7 - allows for 6 devices*/
> +#define DRI2DriverPrimeShift           16
> +#define DRI2DriverPrimeId(x)         (((x) >> DRI2DriverPrimeShift) & (DRI2DriverPrimeMask))
> +
>  #define DRI2DriverDRI                  0
>  #define DRI2DriverVDPAU                        1
>
> --
> 1.7.10.2
>
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