diff options
| author | Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> | 2025-08-20 12:33:29 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-09-09 16:17:53 -0400 |
| commit | 056132483724a1ba1ff8823914dace71f8e8938c (patch) | |
| tree | 4cd30619510ae2596691db48e2af373c2aa6b96c /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | 60df8a5d8f6505974784f7290fdfa94e2aa4e255 (diff) | |
drm/amdgpu/uapi: Introduce AMDGPU_GEM_DOMAIN_MMIO_REMAP
Add a new GEM domain bit AMDGPU_GEM_DOMAIN_MMIO_REMAP to allow
userspace to request the MMIO remap (HDP flush) page via GEM_CREATE.
- include/uapi/drm/amdgpu_drm.h:
* define AMDGPU_GEM_DOMAIN_MMIO_REMAP
* include the bit in AMDGPU_GEM_DOMAIN_MASK
v2: Add early reject in amdgpu_gem_create_ioctl() (Alex).
Cc: Christian König <christian.koenig@amd.com>
Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 630175746780..a8fa09184459 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -457,6 +457,9 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, /* always clear VRAM */ flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED; + if (args->in.domains & AMDGPU_GEM_DOMAIN_MMIO_REMAP) + return -EINVAL; + /* create a gem object to contain this object in */ if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { |