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drm/radeon: add new INFO ioctl requests 

Add requests to get the number of shader engines (SE) and
the number of SH per SE.  These are needed for geometry
and tesselation shaders in the 3D driver as well as setting
up PA_SC_RASTER_CONFIG on SI asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-12-04 12:55:37 -05:00
parent a02dc74b31
commit 2e1a7674f6
2 changed files with 20 additions and 0 deletions
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16
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -361,6 +361,22 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
return -EINVAL;
}
break;
case RADEON_INFO_MAX_SE:
if (rdev->family >= CHIP_TAHITI)
value = rdev->config.si.max_shader_engines;
else if (rdev->family >= CHIP_CAYMAN)
value = rdev->config.cayman.max_shader_engines;
else if (rdev->family >= CHIP_CEDAR)
value = rdev->config.evergreen.num_ses;
else
value = 1;
break;
case RADEON_INFO_MAX_SH_PER_SE:
if (rdev->family >= CHIP_TAHITI)
value = rdev->config.si.max_sh_per_se;
else
return -EINVAL;
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;

4
include/uapi/drm/radeon_drm.h
View File

@ -967,6 +967,10 @@ struct drm_radeon_cs {
#define RADEON_INFO_MAX_PIPES 0x10
/* timestamp for GL_ARB_timer_query (OpenGL), returns the current GPU clock */
#define RADEON_INFO_TIMESTAMP 0x11
/* max shader engines (SE) - needed for geometry shaders, etc. */
#define RADEON_INFO_MAX_SE 0x12
/* max SH per SE */
#define RADEON_INFO_MAX_SH_PER_SE 0x13
struct drm_radeon_info {
uint32_t request;