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authorAlex Deucher <alexander.deucher@amd.com>2012-03-20 17:18:14 -0400
committerDave Airlie <airlied@redhat.com>2012-03-21 06:55:53 +0000
commitdfcf5f36529d69eb35f4fdedfa6f244c5249698c (patch)
treeda1fc31a5ef8d53c63786121f16f29fe3b12a92a /include/drm
parentd2800ee59ed28a5eaf3a4a8645feca040eacf7df (diff)
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')
-rw-r--r--include/drm/radeon_drm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h
index 6cde931d8e6..7c491b4bcf6 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