Signed-off-by: Tina Zhang <tina.zh...@intel.com>
---
drivers/gpu/drm/i915/i915_gem.c | 26 +++++++++++++++++++++++++-
drivers/gpu/drm/i915/i915_gem_object.h | 9 +++++++++
drivers/gpu/drm/i915/i915_gem_tiling.c | 5 +++++
3 files changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1b2dfa8..ebacc04 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1612,6 +1612,12 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void
*data,
if (!obj)
return -ENOENT;
+ /* proxy gem object does not support setting domain */
+ if (i915_gem_object_is_proxy(obj)) {
+ err = -EPERM;
+ goto out;
+ }
+
/* Try to flush the object off the GPU without holding the lock.
* We will repeat the flush holding the lock in the normal manner
* to catch cases where we are gazumped.
@@ -1680,6 +1686,12 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void
*data,
if (!obj)
return -ENOENT;
+ /* proxy gem obj does not support this operation */
+ if (i915_gem_object_is_proxy(obj)) {
+ i915_gem_object_put(obj);
+ return -EPERM;
+ }
+
/* Pinned buffers may be scanout, so flush the cache */
i915_gem_object_flush_if_display(obj);
i915_gem_object_put(obj);
@@ -1730,7 +1742,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
*/
if (!obj->base.filp) {
i915_gem_object_put(obj);
- return -EINVAL;
+ return -EPERM;
}
addr = vm_mmap(obj->base.filp, 0, args->size,
@@ -3764,6 +3776,12 @@ int i915_gem_set_caching_ioctl(struct drm_device *dev,
void *data,
if (!obj)
return -ENOENT;
+ /* proxy gem obj does not support setting caching mode */
+ if (i915_gem_object_is_proxy(obj)) {
+ ret = -EPERM;
+ goto out;
+ }
+
if (obj->cache_level == level)
goto out;
@@ -4210,6 +4228,12 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void
*data,
if (!obj)
return -ENOENT;
+ /* proxy gem obj does not support changing backding storage */
+ if (i915_gem_object_is_proxy(obj)) {
+ err = -EPERM;
+ goto out;
+ }
+
err = mutex_lock_interruptible(&obj->mm.lock);
if (err)
goto out;
diff --git a/drivers/gpu/drm/i915/i915_gem_object.h
b/drivers/gpu/drm/i915/i915_gem_object.h
index 5b19a49..c91e336 100644
--- a/drivers/gpu/drm/i915/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/i915_gem_object.h
@@ -39,6 +39,7 @@ struct drm_i915_gem_object_ops {
unsigned int flags;
#define I915_GEM_OBJECT_HAS_STRUCT_PAGE BIT(0)
#define I915_GEM_OBJECT_IS_SHRINKABLE BIT(1)
+#define I915_GEM_OBJECT_IS_PROXY BIT(2)
/* Interface between the GEM object and its backing storage.
* get_pages() is called once prior to the use of the associated set
@@ -198,6 +199,8 @@ struct drm_i915_gem_object {
} userptr;
unsigned long scratch;
+
+ void *gvt_info;
};
/** for phys allocated objects */
@@ -300,6 +303,12 @@ i915_gem_object_is_shrinkable(const struct
drm_i915_gem_object *obj)
}
static inline bool
+i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
+{
+ return obj->ops->flags & I915_GEM_OBJECT_IS_PROXY;
+}
+
+static inline bool
i915_gem_object_is_active(const struct drm_i915_gem_object *obj)
{
return obj->active_count;
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c
b/drivers/gpu/drm/i915/i915_gem_tiling.c
index fb5231f..21ec066 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -345,6 +345,11 @@ i915_gem_set_tiling_ioctl(struct drm_device *dev, void
*data,
if (!obj)
return -ENOENT;
+ if (i915_gem_object_is_proxy(obj)) {
+ err = -EPERM;
+ goto err;
+ }
+
if (!i915_tiling_ok(obj, args->tiling_mode, args->stride)) {
err = -EINVAL;
goto err;
--
2.7.4
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