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Commit 3bc980bf authored by Michel Dänzer's avatar Michel Dänzer Committed by Christian König
Browse files

drm/radeon: Add RADEON_INFO_VA_UNMAP_WORKING query 



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
26d4d129,
48afbd70 and
c29c0876 as well, otherwise using
RADEON_VA_UNMAP runs into trouble)

Signed-off-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
parent 25161084

drivers/gpu/drm/radeon/radeon_kms.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

include/uapi/drm/radeon_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -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;