diff options
| author | Dave Airlie <airlied@redhat.com> | 2012-01-20 10:34:58 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-07-06 15:58:37 +0100 |
| commit | fb9e9339876d0a7c4821f9dbea1635a43a06da01 (patch) | |
| tree | bfca73d27765f6112eede3caff0edee49319722f | |
| parent | 652fe8d9dd2393127b11741ba63cb95a83ad454f (diff) | |
dri2proto: add prime protocol support. (v2.1)
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
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | dri2tokens.h | 5 |
1 files changed, 5 insertions, 0 deletions
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 |