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| author | Alex Deucher <alexander.deucher@amd.com> | 2012-03-20 17:18:14 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-03-21 06:55:53 +0000 |
| commit | dfcf5f36529d69eb35f4fdedfa6f244c5249698c (patch) | |
| tree | da1fc31a5ef8d53c63786121f16f29fe3b12a92a /include/drm/radeon_drm.h | |
| parent | d2800ee59ed28a5eaf3a4a8645feca040eacf7df (diff) | |
| download | lwn-dfcf5f36529d69eb35f4fdedfa6f244c5249698c.tar.gz lwn-dfcf5f36529d69eb35f4fdedfa6f244c5249698c.zip | |
drm/radeon/kms: add support for the CONST IB to the CS ioctl
This adds a new chunk id to the CS ioctl to support the
INDIRECT_BUFFER_CONST packet.
On SI, the CP adds a new engine called the CE (Constant Engine)
which runs simulatenously with the DE (Drawing Engine, formerly
called the ME). This allows the CP to process two related IBs
simultaneously. The CE is tasked with loading the constant data
(constant buffers, resource descriptors, samplers, etc.) while
the DE loads context register state and issues drawing commands.
It's up to the userspace application to sychronize the CE and the
DE using special synchronization packets.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/radeon_drm.h')
| -rw-r--r-- | include/drm/radeon_drm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h index 6cde931d8e68..7c491b4bcf65 100644 --- a/include/drm/radeon_drm.h +++ b/include/drm/radeon_drm.h @@ -908,6 +908,7 @@ struct drm_radeon_gem_va { #define RADEON_CHUNK_ID_RELOCS 0x01 #define RADEON_CHUNK_ID_IB 0x02 #define RADEON_CHUNK_ID_FLAGS 0x03 +#define RADEON_CHUNK_ID_CONST_IB 0x04 /* The first dword of RADEON_CHUNK_ID_FLAGS is a uint32 of these flags: */ #define RADEON_CS_KEEP_TILING_FLAGS 0x01 |