diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2014-10-01 11:26:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-19 12:26:42 -0400 |
| commit | 4535cb9cefbc736b47bc1e7f8628065aba5ca0d7 (patch) | |
| tree | 61ac646bcce16d863c023e05510200e735036ec7 | |
| parent | 353eec2ab229867d59a12375a48fc65e2d749e8b (diff) | |
| download | op-kernel-dev-4535cb9cefbc736b47bc1e7f8628065aba5ca0d7.zip op-kernel-dev-4535cb9cefbc736b47bc1e7f8628065aba5ca0d7.tar.gz | |
drm/radeon: add support for read reg query from radeon info ioctl
This allows us to query certain registers from userspace
for profiling and harvest configuration. E.g., it can
be used by the GALLIUM_HUD for profiling the status of
various gfx blocks.
Tested-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_kms.c | 8 | ||||
| -rw-r--r-- | include/uapi/drm/radeon_drm.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index cf7e54e..7b2a733 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -568,6 +568,14 @@ static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file else *value = rdev->pm.current_mclk / 100; break; + case RADEON_INFO_READ_REG: + if (copy_from_user(value, value_ptr, sizeof(uint32_t))) { + DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__); + return -EFAULT; + } + if (radeon_get_allowed_info_register(rdev, *value, value)) + return -EINVAL; + break; default: DRM_DEBUG_KMS("Invalid request %d\n", info->request); return -EINVAL; diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h index de7ee21..871e73f 100644 --- a/include/uapi/drm/radeon_drm.h +++ b/include/uapi/drm/radeon_drm.h @@ -1037,6 +1037,7 @@ struct drm_radeon_cs { #define RADEON_INFO_CURRENT_GPU_TEMP 0x21 #define RADEON_INFO_CURRENT_GPU_SCLK 0x22 #define RADEON_INFO_CURRENT_GPU_MCLK 0x23 +#define RADEON_INFO_READ_REG 0x24 struct drm_radeon_info { uint32_t request; |
