uint64_t offset;
int ret;
+ intel_runtime_pm_get(to_i915(dev));
vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
if (!IS_ERR(vma)) {
node.start = i915_ggtt_offset(vma);
i915_vma_unpin(vma);
}
out:
+ intel_runtime_pm_put(to_i915(dev));
return ret;
}
ret = i915_gem_shmem_pread(dev, obj, args, file);
/* pread for non shmem backed objects */
- if (ret == -EFAULT || ret == -ENODEV) {
- intel_runtime_pm_get(to_i915(dev));
+ if (ret == -EFAULT || ret == -ENODEV)
ret = i915_gem_gtt_pread(dev, obj, args->size,
args->offset, args->data_ptr);
- intel_runtime_pm_put(to_i915(dev));
- }
i915_gem_object_put(obj);
mutex_unlock(&dev->struct_mutex);
if (i915_gem_object_is_tiled(obj))
return -EFAULT;
+ intel_runtime_pm_get(i915);
vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0,
PIN_MAPPABLE | PIN_NONBLOCK);
if (!IS_ERR(vma)) {
i915_vma_unpin(vma);
}
out:
+ intel_runtime_pm_put(i915);
return ret;
}
* perspective, requiring manual detiling by the client.
*/
if (!i915_gem_object_has_struct_page(obj) ||
- cpu_write_needs_clflush(obj)) {
- ret = i915_gem_gtt_pwrite_fast(dev_priv, obj, args, file);
+ cpu_write_needs_clflush(obj))
/* Note that the gtt paths might fail with non-page-backed user
* pointers (e.g. gtt mappings when moving data between
- * textures). Fallback to the shmem path in that case. */
- }
+ * textures). Fallback to the shmem path in that case.
+ */
+ ret = i915_gem_gtt_pwrite_fast(dev_priv, obj, args, file);
if (ret == -EFAULT || ret == -ENOSPC) {
if (obj->phys_handle)
if (ret)
goto err_unpin;
+ /* Mark as being mmapped into userspace for later revocation */
+ assert_rpm_wakelock_held(dev_priv);
+ if (list_empty(&obj->userfault_link))
+ list_add(&obj->userfault_link, &dev_priv->mm.userfault_list);
+
/* Finally, remap it using the new GTT offset */
ret = remap_io_mapping(area,
area->vm_start + (vma->ggtt_view.params.partial.offset << PAGE_SHIFT),
(ggtt->mappable_base + vma->node.start) >> PAGE_SHIFT,
min_t(u64, vma->size, area->vm_end - area->vm_start),
&ggtt->mappable);
- if (ret)
- goto err_unpin;
- obj->fault_mappable = true;
err_unpin:
__i915_vma_unpin(vma);
err_unlock:
void
i915_gem_release_mmap(struct drm_i915_gem_object *obj)
{
+ struct drm_i915_private *i915 = to_i915(obj->base.dev);
+
/* Serialisation between user GTT access and our code depends upon
* revoking the CPU's PTE whilst the mutex is held. The next user
* pagefault then has to wait until we release the mutex.
+ *
+ * Note that RPM complicates somewhat by adding an additional
+ * requirement that operations to the GGTT be made holding the RPM
+ * wakeref.
*/
- lockdep_assert_held(&obj->base.dev->struct_mutex);
+ lockdep_assert_held(&i915->drm.struct_mutex);
+ intel_runtime_pm_get(i915);
- if (!obj->fault_mappable)
- return;
+ if (list_empty(&obj->userfault_link))
+ goto out;
+ list_del_init(&obj->userfault_link);
drm_vma_node_unmap(&obj->base.vma_node,
obj->base.dev->anon_inode->i_mapping);
*/
wmb();
- obj->fault_mappable = false;
+out:
+ intel_runtime_pm_put(i915);
}
-void
-i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv)
+void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv)
{
- struct drm_i915_gem_object *obj;
+ struct drm_i915_gem_object *obj, *on;
+ int i;
- list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
- i915_gem_release_mmap(obj);
+ /*
+ * Only called during RPM suspend. All users of the userfault_list
+ * must be holding an RPM wakeref to ensure that this can not
+ * run concurrently with themselves (and use the struct_mutex for
+ * protection between themselves).
+ */
+
+ list_for_each_entry_safe(obj, on,
+ &dev_priv->mm.userfault_list, userfault_link) {
+ list_del_init(&obj->userfault_link);
+ drm_vma_node_unmap(&obj->base.vma_node,
+ obj->base.dev->anon_inode->i_mapping);
+ }
+
+ /* The fence will be lost when the device powers down. If any were
+ * in use by hardware (i.e. they are pinned), we should not be powering
+ * down! All other fences will be reacquired by the user upon waking.
+ */
+ for (i = 0; i < dev_priv->num_fence_regs; i++) {
+ struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i];
+
+ if (WARN_ON(reg->pin_count))
+ continue;
+
+ if (!reg->vma)
+ continue;
+
+ GEM_BUG_ON(!list_empty(®->vma->obj->userfault_link));
+ reg->dirty = true;
+ }
}
/**
int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_i915_private *i915 = to_i915(dev);
struct drm_i915_gem_caching *args = data;
struct drm_i915_gem_object *obj;
enum i915_cache_level level;
* cacheline, whereas normally such cachelines would get
* invalidated.
*/
- if (!HAS_LLC(dev) && !HAS_SNOOP(dev))
+ if (!HAS_LLC(i915) && !HAS_SNOOP(i915))
return -ENODEV;
level = I915_CACHE_LLC;
break;
case I915_CACHING_DISPLAY:
- level = HAS_WT(dev_priv) ? I915_CACHE_WT : I915_CACHE_NONE;
+ level = HAS_WT(i915) ? I915_CACHE_WT : I915_CACHE_NONE;
break;
default:
return -EINVAL;
}
- intel_runtime_pm_get(dev_priv);
-
ret = i915_mutex_lock_interruptible(dev);
if (ret)
- goto rpm_put;
+ return ret;
obj = i915_gem_object_lookup(file, args->handle);
if (!obj) {
}
ret = i915_gem_object_set_cache_level(obj, level);
-
i915_gem_object_put(obj);
unlock:
mutex_unlock(&dev->struct_mutex);
-rpm_put:
- intel_runtime_pm_put(dev_priv);
-
return ret;
}
int i;
INIT_LIST_HEAD(&obj->global_list);
+ INIT_LIST_HEAD(&obj->userfault_link);
for (i = 0; i < I915_NUM_ENGINES; i++)
init_request_active(&obj->last_read[i],
i915_gem_object_retire__read);
INIT_LIST_HEAD(&dev_priv->mm.unbound_list);
INIT_LIST_HEAD(&dev_priv->mm.bound_list);
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
+ INIT_LIST_HEAD(&dev_priv->mm.userfault_list);
INIT_DELAYED_WORK(&dev_priv->gt.retire_work,
i915_gem_retire_work_handler);
INIT_DELAYED_WORK(&dev_priv->gt.idle_work,
projects / linux-2.6-microblaze.git / blobdiff