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drm/radeon: Add RADEON_INFO_VA_UNMAP_WORKING query

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This tells userspace that it's safe to use the RADEON_VA_UNMAP operation
of the DRM_RADEON_GEM_VA ioctl.

Cc: stable@vger.kernel.org
(NOTE: Backporting this commit requires at least backports of commits
26d4d129b6042197b4cbc8341c0618f99231af2f,
48afbd70ac7b6aa62e8d452091023941d8085f8a and
c29c0876ec05d51a93508a39b90b92c29ba6423d as well, otherwise using
RADEON_VA_UNMAP runs into trouble)

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Michel Dänzer 2015-06-16 17:28:16 +09:00 committed by Christian König
parent 25161084b1
commit 3bc980bf19
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -576,6 +576,9 @@ static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file
if (radeon_get_allowed_info_register(rdev, *value, value))
return -EINVAL;
break;
case RADEON_INFO_VA_UNMAP_WORKING:
*value = true;
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;

1
include/uapi/drm/radeon_drm.h
View File

@ -1038,6 +1038,7 @@ struct drm_radeon_cs {
#define RADEON_INFO_CURRENT_GPU_SCLK 0x22
#define RADEON_INFO_CURRENT_GPU_MCLK 0x23
#define RADEON_INFO_READ_REG 0x24
#define RADEON_INFO_VA_UNMAP_WORKING 0x25
struct drm_radeon_info {
uint32_t request;