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drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2)

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Use semaphores to sync buffers across rings in the CS
ioctl.  Add a reloc flag to allow userspace to skip
sync for buffers.

agd5f: port to latest CS ioctl changes.

v2: add ring lock/unlock to make sure changes hit the ring.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Christian König
2012-01-05 22:11:06 -05:00
committed by Dave Airlie
parent 721604a15b
commit 93504fce28
4 changed files with 53 additions and 0 deletions
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include/drm/radeon_drm.h
+3
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@@ -917,6 +917,9 @@ struct drm_radeon_cs_chunk {
uint64_t chunk_data;
};
/* drm_radeon_cs_reloc.flags */
#define RADEON_RELOC_DONT_SYNC 0x01
struct drm_radeon_cs_reloc {
uint32_t handle;
uint32_t read_domains;