drm/radeon: add a way to get and set initial buffer domains v2
When passing buffers between processes, the receiving process needs to know
the original buffer domain, so that it doesn't accidentally move the buffer.
v2: reserve the buffer
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 1ac3393..c20d88c 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -456,6 +456,7 @@
/* Protected by gem.mutex */
struct list_head list;
/* Protected by tbo.reserved */
+ u32 initial_domain;
u32 placements[3];
struct ttm_placement placement;
struct ttm_buffer_object tbo;
@@ -2116,6 +2117,8 @@
struct drm_file *filp);
int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
+int radeon_gem_op_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *filp);
int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 84a1bbb7..4392b7c 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -79,9 +79,10 @@
* 2.35.0 - Add CIK macrotile mode array query
* 2.36.0 - Fix CIK DCE tiling setup
* 2.37.0 - allow GS ring setup on r6xx/r7xx
+ * 2.38.0 - RADEON_GEM_OP (GET_INITIAL_DOMAIN, SET_INITIAL_DOMAIN)
*/
#define KMS_DRIVER_MAJOR 2
-#define KMS_DRIVER_MINOR 37
+#define KMS_DRIVER_MINOR 38
#define KMS_DRIVER_PATCHLEVEL 0
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
int radeon_driver_unload_kms(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index b96c819..9863ca7 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -533,6 +533,42 @@
return r;
}
+int radeon_gem_op_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *filp)
+{
+ struct drm_radeon_gem_op *args = data;
+ struct drm_gem_object *gobj;
+ struct radeon_bo *robj;
+ int r;
+
+ gobj = drm_gem_object_lookup(dev, filp, args->handle);
+ if (gobj == NULL) {
+ return -ENOENT;
+ }
+ robj = gem_to_radeon_bo(gobj);
+ r = radeon_bo_reserve(robj, false);
+ if (unlikely(r))
+ goto out;
+
+ switch (args->op) {
+ case RADEON_GEM_OP_GET_INITIAL_DOMAIN:
+ args->value = robj->initial_domain;
+ break;
+ case RADEON_GEM_OP_SET_INITIAL_DOMAIN:
+ robj->initial_domain = args->value & (RADEON_GEM_DOMAIN_VRAM |
+ RADEON_GEM_DOMAIN_GTT |
+ RADEON_GEM_DOMAIN_CPU);
+ break;
+ default:
+ r = -EINVAL;
+ }
+
+ radeon_bo_unreserve(robj);
+out:
+ drm_gem_object_unreference_unlocked(gobj);
+ return r;
+}
+
int radeon_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index baff98b..0b631eb 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -814,5 +814,6 @@
DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(RADEON_GEM_OP, radeon_gem_op_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
};
int radeon_max_kms_ioctl = DRM_ARRAY_SIZE(radeon_ioctls_kms);
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 08595cf..dd12bb4 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -145,6 +145,9 @@
bo->surface_reg = -1;
INIT_LIST_HEAD(&bo->list);
INIT_LIST_HEAD(&bo->va);
+ bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM |
+ RADEON_GEM_DOMAIN_GTT |
+ RADEON_GEM_DOMAIN_CPU);
radeon_ttm_placement_from_domain(bo, domain);
/* Kernel allocation are uninterruptible */
down_read(&rdev->pm.mclk_lock);