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| author | Tom Stellard <thomas.stellard@amd.com> | 2013-08-16 17:47:39 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-01 09:17:47 -0700 |
| commit | c7384791a785d8f356aa9de8038596cfd2ea87d3 (patch) | |
| tree | 014bbcfff571218764c96099ed8b908f3c0ac486 /include/uapi | |
| parent | 5c6ece5d3786f287d61bc0ffd1ab372f47df2b81 (diff) | |
| download | linux-3.10-c7384791a785d8f356aa9de8038596cfd2ea87d3.tar.gz linux-3.10-c7384791a785d8f356aa9de8038596cfd2ea87d3.tar.bz2 linux-3.10-c7384791a785d8f356aa9de8038596cfd2ea87d3.zip | |
drm/radeon/si: Add support for CP DMA to CS checker for compute v2
commit e5b9e7503eb1f4884efa3b321d3cc47806779202 upstream.
Also add a new RADEON_INFO query to check that CP DMA packets are
supported on the compute ring.
CP DMA has been supported since the 3.8 kernel, but due to an oversight
we forgot to teach the CS checker that the CP DMA packet was legal for
the compute ring on Southern Islands GPUs.
This patch fixes a bug where the radeon driver will incorrectly reject a legal
CP DMA packet from user space. I would like to have the patch
backported to stable so that we don't have to require Mesa users to use a
bleeding edge kernel in order to take advantage of this feature which
is already present in the stable kernels (3.8 and newer).
v2:
- Don't bump kms version, so this patch can be backported to stable
kernels.
Signed-off-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/drm/radeon_drm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h index 321d4ac5c51..fa8b3adf9ff 100644 --- a/include/uapi/drm/radeon_drm.h +++ b/include/uapi/drm/radeon_drm.h @@ -979,6 +979,8 @@ struct drm_radeon_cs { #define RADEON_INFO_RING_WORKING 0x15 /* SI tile mode array */ #define RADEON_INFO_SI_TILE_MODE_ARRAY 0x16 +/* query if CP DMA is supported on the compute ring */ +#define RADEON_INFO_SI_CP_DMA_COMPUTE 0x17 struct drm_radeon_info { |