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drm/radeon/kms: add info query for max pipes

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The maximum number of pipes is needed by the user space compute
driver to calculate the number of wavefronts per thread group.

Signed-off-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Tom Stellard
2012-03-20 17:17:55 -04:00
committed by Dave Airlie
parent da0df92b57
commit 609c1e15a4
3 changed files with 17 additions and 1 deletions
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13
drivers/gpu/drm/radeon/radeon_kms.c
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@@ -264,6 +264,19 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
return -EINVAL;
value = RADEON_IB_VM_MAX_SIZE;
break;
case RADEON_INFO_MAX_PIPES:
if (rdev->family >= CHIP_CAYMAN)
value = rdev->config.cayman.max_pipes_per_simd;
else if (rdev->family >= CHIP_CEDAR)
value = rdev->config.evergreen.max_pipes;
else if (rdev->family >= CHIP_RV770)
value = rdev->config.rv770.max_pipes;
else if (rdev->family >= CHIP_R600)
value = rdev->config.r600.max_pipes;
else {
return -EINVAL;
}
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;