WebSVN – Kolibri OS – Diff – /drivers/video/drm/ttm/ttm_bo.c

 /**************************************************************************
+ *
  * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
  * All Rights Reserved.
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sub license, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
+ *
  * The above copyright notice and this permission notice (including the
  * next paragraph) shall be included in all copies or substantial portions
  * of the Software.
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
  **************************************************************************/
 /*
  * Authors: Thomas Hellstrom
  */
 #define pr_fmt(fmt) "[TTM] " fmt
 #include
 #include
 #include
 #include
 #include
 #include
 #include
 #include
+#define pr_err(fmt, ...) \
+        printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
 #define TTM_ASSERT_LOCKED(param)
 #define TTM_DEBUG(fmt, arg...)
 #define TTM_BO_HASH_ORDER 13
-#define pr_err(fmt, ...) \
-        printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
+static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type)
-int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible)
+{
+	int i;
 	for (i = 0; i <= TTM_PL_PRIV5; i++)
 		if (flags & (1 << i)) {
-    mutex_lock(&man->io_reserve_mutex);
-    return 0;
-}
-void ttm_mem_io_unlock(struct ttm_mem_type_manager *man)
+			*mem_type = i;
-{
-    if (likely(man->io_reserve_fastpath))
-        return;
+    return 0;
+		}
-    mutex_unlock(&man->io_reserve_mutex);
+	return -EINVAL;
+}
-#if 0
-static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type)
-{
-    struct ttm_mem_type_manager *man = &bdev->man[mem_type];
-    pr_err("    has_type: %d\n", man->has_type);
-    pr_err("    use_type: %d\n", man->use_type);
-    pr_err("    flags: 0x%08X\n", man->flags);
-    pr_err("    gpu_offset: 0x%08lX\n", man->gpu_offset);
-    pr_err("    size: %llu\n", man->size);
-    pr_err("    available_caching: 0x%08X\n", man->available_caching);
-    pr_err("    default_caching: 0x%08X\n", man->default_caching);
-    if (mem_type != TTM_PL_SYSTEM)
-        (*man->func->debug)(man, TTM_PFX);
-}
-static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
-                    struct ttm_placement *placement)
-{
-    int i, ret, mem_type;
-    pr_err("No space for %p (%lu pages, %luK, %luM)\n",
-           bo, bo->mem.num_pages, bo->mem.size >> 10,
-           bo->mem.size >> 20);
-    for (i = 0; i < placement->num_placement; i++) {
-        ret = ttm_mem_type_from_flags(placement->placement[i],
-                        &mem_type);
-        if (ret)
-            return;
-        pr_err("  placement[%d]=0x%08X (%d)\n",
-               i, placement->placement[i], mem_type);
-        ttm_mem_type_debug(bo->bdev, mem_type);
-    }
-}
-static ssize_t ttm_bo_global_show(struct kobject *kobj,
-                  struct attribute *attr,
-                  char *buffer)
-{
-    struct ttm_bo_global *glob =
-        container_of(kobj, struct ttm_bo_global, kobj);
-    return snprintf(buffer, PAGE_SIZE, "%lu\n",
-            (unsigned long) atomic_read(&glob->bo_count));
-}
-static struct attribute *ttm_bo_global_attrs[] = {
-    &ttm_bo_count,
-    NULL
-};
-static const struct sysfs_ops ttm_bo_global_ops = {
-    .show = &ttm_bo_global_show
-};
 static struct kobj_type ttm_bo_glob_kobj_type  = {
     .release = &ttm_bo_global_kobj_release,
     .sysfs_ops = &ttm_bo_global_ops,
     .default_attrs = ttm_bo_global_attrs
 };
 #endif
 static inline uint32_t ttm_bo_type_flags(unsigned type)
+{
 	return 1 << (type);
+}
 static void ttm_bo_release_list(struct kref *list_kref)
+{
 	struct ttm_buffer_object *bo =
 	    container_of(list_kref, struct ttm_buffer_object, list_kref);
 	struct ttm_bo_device *bdev = bo->bdev;
 	size_t acc_size = bo->acc_size;
 	BUG_ON(atomic_read(&bo->list_kref.refcount));
 	BUG_ON(atomic_read(&bo->kref.refcount));
 	BUG_ON(atomic_read(&bo->cpu_writers));
 	BUG_ON(bo->sync_obj != NULL);
 	BUG_ON(bo->mem.mm_node != NULL);
 	BUG_ON(!list_empty(&bo->lru));
 	BUG_ON(!list_empty(&bo->ddestroy));
 	if (bo->ttm)
 		ttm_tt_destroy(bo->ttm);
 	atomic_dec(&bo->glob->bo_count);
+	if (bo->resv == &bo->ttm_resv)
+		reservation_object_fini(&bo->ttm_resv);
+	mutex_destroy(&bo->wu_mutex);
 	if (bo->destroy)
 		bo->destroy(bo);
 	else {
 		kfree(bo);
+	}
-	ttm_mem_global_free(bdev->glob->mem_glob, acc_size);
+}
 void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_mem_type_manager *man;
-//	BUG_ON(!ttm_bo_is_reserved(bo));
+	lockdep_assert_held(&bo->resv->lock.base);
 	if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) {
 		BUG_ON(!list_empty(&bo->lru));
 		man = &bdev->man[bo->mem.mem_type];
 		list_add_tail(&bo->lru, &man->lru);
 		kref_get(&bo->list_kref);
 		if (bo->ttm != NULL) {
 			list_add_tail(&bo->swap, &bo->glob->swap_lru);
 			kref_get(&bo->list_kref);
+		}
+	}
+}
 EXPORT_SYMBOL(ttm_bo_add_to_lru);
 int ttm_bo_del_from_lru(struct ttm_buffer_object *bo)
+{
 	int put_count = 0;
 	if (!list_empty(&bo->swap)) {
 		list_del_init(&bo->swap);
 		++put_count;
+	}
 	if (!list_empty(&bo->lru)) {
 		list_del_init(&bo->lru);
 		++put_count;
+	}
 	/*
 	 * TODO: Add a driver hook to delete from
 	 * driver-specific LRU's here.
 	 */
 	return put_count;
+}
 static void ttm_bo_ref_bug(struct kref *list_kref)
+{
 	BUG();
+}
 void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count,
 			 bool never_free)
+{
 //   kref_sub(&bo->list_kref, count,
 //        (never_free) ? ttm_bo_ref_bug : ttm_bo_release_list);
+}
 void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo)
+{
 	int put_count;
 	spin_lock(&bo->glob->lru_lock);
 	put_count = ttm_bo_del_from_lru(bo);
 	spin_unlock(&bo->glob->lru_lock);
 	ttm_bo_list_ref_sub(bo, put_count, true);
+}
 EXPORT_SYMBOL(ttm_bo_del_sub_from_lru);
 /*
  * Call bo->mutex locked.
  */
 static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_bo_global *glob = bo->glob;
 	int ret = 0;
 	uint32_t page_flags = 0;
 	TTM_ASSERT_LOCKED(&bo->mutex);
 	bo->ttm = NULL;
 	if (bdev->need_dma32)
 		page_flags |= TTM_PAGE_FLAG_DMA32;
 	switch (bo->type) {
 	case ttm_bo_type_device:
 		if (zero_alloc)
 			page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
 	case ttm_bo_type_kernel:
 		bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
 						      page_flags, glob->dummy_read_page);
 		if (unlikely(bo->ttm == NULL))
 			ret = -ENOMEM;
 		break;
 	case ttm_bo_type_sg:
 		bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
 						      page_flags | TTM_PAGE_FLAG_SG,
 						      glob->dummy_read_page);
 		if (unlikely(bo->ttm == NULL)) {
 			ret = -ENOMEM;
 			break;
+		}
 		bo->ttm->sg = bo->sg;
 		break;
 	default:
 		pr_err("Illegal buffer object type\n");
 		ret = -EINVAL;
 		break;
+	}
 	return ret;
+}
 #if 0
 static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
 				  struct ttm_mem_reg *mem,
 				  bool evict, bool interruptible,
 				  bool no_wait_gpu)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem);
 	bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem);
 	struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type];
 	struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type];
 	int ret = 0;
 	if (old_is_pci || new_is_pci ||
 	    ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) {
 		ret = ttm_mem_io_lock(old_man, true);
 		if (unlikely(ret != 0))
 			goto out_err;
 		ttm_bo_unmap_virtual_locked(bo);
 		ttm_mem_io_unlock(old_man);
+	}
 	/*
 	 * Create and bind a ttm if required.
 	 */
 	if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) {
 		if (bo->ttm == NULL) {
 			bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED);
 			ret = ttm_bo_add_ttm(bo, zero);
 			if (ret)
 				goto out_err;
+		}
 		ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement);
 		if (ret)
 			goto out_err;
 		if (mem->mem_type != TTM_PL_SYSTEM) {
 			ret = ttm_tt_bind(bo->ttm, mem);
 			if (ret)
 				goto out_err;
+		}
 		if (bo->mem.mem_type == TTM_PL_SYSTEM) {
 			if (bdev->driver->move_notify)
 				bdev->driver->move_notify(bo, mem);
 			bo->mem = *mem;
 			mem->mm_node = NULL;
 			goto moved;
+		}
+	}
 	if (bdev->driver->move_notify)
 		bdev->driver->move_notify(bo, mem);
 	if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
 	    !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
 		ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem);
 	else if (bdev->driver->move)
 		ret = bdev->driver->move(bo, evict, interruptible,
 					 no_wait_gpu, mem);
 	else
 		ret = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, mem);
 	if (ret) {
 		if (bdev->driver->move_notify) {
 			struct ttm_mem_reg tmp_mem = *mem;
 			*mem = bo->mem;
 			bo->mem = tmp_mem;
 			bdev->driver->move_notify(bo, mem);
 			bo->mem = *mem;
 			*mem = tmp_mem;
+		}
 		goto out_err;
+	}
 moved:
 	if (bo->evicted) {
+		if (bdev->driver->invalidate_caches) {
 		ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement);
 		if (ret)
 			pr_err("Can not flush read caches\n");
+		}
 		bo->evicted = false;
+	}
 	if (bo->mem.mm_node) {
 		bo->offset = (bo->mem.start << PAGE_SHIFT) +
 		    bdev->man[bo->mem.mem_type].gpu_offset;
 		bo->cur_placement = bo->mem.placement;
 	} else
 		bo->offset = 0;
 	return 0;
 out_err:
 	new_man = &bdev->man[bo->mem.mem_type];
 	if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) {
 		ttm_tt_unbind(bo->ttm);
 		ttm_tt_destroy(bo->ttm);
 		bo->ttm = NULL;
+	}
 	return ret;
+}
 /**
  * Call bo::reserved.
  * Will release GPU memory type usage on destruction.
  * This is the place to put in driver specific hooks to release
  * driver private resources.
  * Will release the bo::reserved lock.
  */
 static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
+{
 	if (bo->bdev->driver->move_notify)
 		bo->bdev->driver->move_notify(bo, NULL);
 	if (bo->ttm) {
 		ttm_tt_unbind(bo->ttm);
 		ttm_tt_destroy(bo->ttm);
 		bo->ttm = NULL;
+	}
 	ttm_bo_mem_put(bo, &bo->mem);
 	ww_mutex_unlock (&bo->resv->lock);
+}
 static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_bo_global *glob = bo->glob;
 	struct ttm_bo_driver *driver = bdev->driver;
 	void *sync_obj = NULL;
 	int put_count;
 	int ret;
 	spin_lock(&glob->lru_lock);
-	ret = ttm_bo_reserve_nolru(bo, false, true, false, 0);
+	ret = __ttm_bo_reserve(bo, false, true, false, NULL);
 	spin_lock(&bdev->fence_lock);
 	(void) ttm_bo_wait(bo, false, false, true);
 	if (!ret && !bo->sync_obj) {
 		spin_unlock(&bdev->fence_lock);
 		put_count = ttm_bo_del_from_lru(bo);
 		spin_unlock(&glob->lru_lock);
 		ttm_bo_cleanup_memtype_use(bo);
 		ttm_bo_list_ref_sub(bo, put_count, true);
 		return;
+	}
 	if (bo->sync_obj)
 		sync_obj = driver->sync_obj_ref(bo->sync_obj);
 	spin_unlock(&bdev->fence_lock);
 	if (!ret) {
 		/*
 		 * Make NO_EVICT bos immediately available to
 		 * shrinkers, now that they are queued for
 		 * destruction.
 		 */
 		if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) {
 			bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT;
 			ttm_bo_add_to_lru(bo);
+		}
-		ww_mutex_unlock(&bo->resv->lock);
+		__ttm_bo_unreserve(bo);
+	}
 	kref_get(&bo->list_kref);
 	list_add_tail(&bo->ddestroy, &bdev->ddestroy);
 	spin_unlock(&glob->lru_lock);
 	if (sync_obj) {
 		driver->sync_obj_flush(sync_obj);
 		driver->sync_obj_unref(&sync_obj);
+	}
-	schedule_delayed_work(&bdev->wq,
+//	schedule_delayed_work(&bdev->wq,
-			      ((HZ / 100) < 1) ? 1 : HZ / 100);
+//			      ((HZ / 100) < 1) ? 1 : HZ / 100);
+}
 /**
  * function ttm_bo_cleanup_refs_and_unlock
  * If bo idle, remove from delayed- and lru lists, and unref.
  * If not idle, do nothing.
+ *
  * Must be called with lru_lock and reservation held, this function
  * will drop both before returning.
+ *
  * @interruptible         Any sleeps should occur interruptibly.
  * @no_wait_gpu           Never wait for gpu. Return -EBUSY instead.
  */
 static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo,
 					  bool interruptible,
 					  bool no_wait_gpu)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_bo_driver *driver = bdev->driver;
 	struct ttm_bo_global *glob = bo->glob;
 	int put_count;
 	int ret;
 	spin_lock(&bdev->fence_lock);
 	ret = ttm_bo_wait(bo, false, false, true);
 	if (ret && !no_wait_gpu) {
 		void *sync_obj;
 		/*
 		 * Take a reference to the fence and unreserve,
 		 * at this point the buffer should be dead, so
 		 * no new sync objects can be attached.
 		 */
 		sync_obj = driver->sync_obj_ref(bo->sync_obj);
 		spin_unlock(&bdev->fence_lock);
-		ww_mutex_unlock(&bo->resv->lock);
+		__ttm_bo_unreserve(bo);
 		spin_unlock(&glob->lru_lock);
 		ret = driver->sync_obj_wait(sync_obj, false, interruptible);
 		driver->sync_obj_unref(&sync_obj);
 		if (ret)
 			return ret;
 		/*
 		 * remove sync_obj with ttm_bo_wait, the wait should be
 		 * finished, and no new wait object should have been added.
 		 */
 		spin_lock(&bdev->fence_lock);
 		ret = ttm_bo_wait(bo, false, false, true);
 		WARN_ON(ret);
 		spin_unlock(&bdev->fence_lock);
 		if (ret)
 			return ret;
 		spin_lock(&glob->lru_lock);
-		ret = ttm_bo_reserve_nolru(bo, false, true, false, 0);
+		ret = __ttm_bo_reserve(bo, false, true, false, NULL);
 		/*
 		 * We raced, and lost, someone else holds the reservation now,
 		 * and is probably busy in ttm_bo_cleanup_memtype_use.
+		 *
 		 * Even if it's not the case, because we finished waiting any
 		 * delayed destruction would succeed, so just return success
 		 * here.
 		 */
 		if (ret) {
 			spin_unlock(&glob->lru_lock);
 			return 0;
+		}
 	} else
 		spin_unlock(&bdev->fence_lock);
 	if (ret || unlikely(list_empty(&bo->ddestroy))) {
-		ww_mutex_unlock(&bo->resv->lock);
+		__ttm_bo_unreserve(bo);
 		spin_unlock(&glob->lru_lock);
 		return ret;
+	}
 	put_count = ttm_bo_del_from_lru(bo);
 	list_del_init(&bo->ddestroy);
 	++put_count;
 	spin_unlock(&glob->lru_lock);
 	ttm_bo_cleanup_memtype_use(bo);
 	ttm_bo_list_ref_sub(bo, put_count, true);
 	return 0;
+}
 /**
  * Traverse the delayed list, and call ttm_bo_cleanup_refs on all
  * encountered buffers.
  */
 static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all)
+{
 	struct ttm_bo_global *glob = bdev->glob;
 	struct ttm_buffer_object *entry = NULL;
 	int ret = 0;
 	spin_lock(&glob->lru_lock);
 	if (list_empty(&bdev->ddestroy))
 		goto out_unlock;
 	entry = list_first_entry(&bdev->ddestroy,
 		struct ttm_buffer_object, ddestroy);
 	kref_get(&entry->list_kref);
 	for (;;) {
 		struct ttm_buffer_object *nentry = NULL;
 		if (entry->ddestroy.next != &bdev->ddestroy) {
 			nentry = list_first_entry(&entry->ddestroy,
 				struct ttm_buffer_object, ddestroy);
 			kref_get(&nentry->list_kref);
+		}
-		ret = ttm_bo_reserve_nolru(entry, false, true, false, 0);
+		ret = __ttm_bo_reserve(entry, false, true, false, NULL);
 		if (remove_all && ret) {
 			spin_unlock(&glob->lru_lock);
-			ret = ttm_bo_reserve_nolru(entry, false, false,
+			ret = __ttm_bo_reserve(entry, false, false,
-						   false, 0);
+					       false, NULL);
 			spin_lock(&glob->lru_lock);
+		}
 		if (!ret)
 			ret = ttm_bo_cleanup_refs_and_unlock(entry, false,
 							     !remove_all);
 		else
 			spin_unlock(&glob->lru_lock);
 		kref_put(&entry->list_kref, ttm_bo_release_list);
 		entry = nentry;
 		if (ret || !entry)
 			goto out;
 		spin_lock(&glob->lru_lock);
 		if (list_empty(&entry->ddestroy))
 			break;
+	}
 out_unlock:
 	spin_unlock(&glob->lru_lock);
 out:
 	if (entry)
 		kref_put(&entry->list_kref, ttm_bo_release_list);
 	return ret;
+}
 static void ttm_bo_delayed_workqueue(struct work_struct *work)
+{
 	struct ttm_bo_device *bdev =
 	    container_of(work, struct ttm_bo_device, wq.work);
 	if (ttm_bo_delayed_delete(bdev, false)) {
 		schedule_delayed_work(&bdev->wq,
 				      ((HZ / 100) < 1) ? 1 : HZ / 100);
+	}
+}
-#endif
 static void ttm_bo_release(struct kref *kref)
+{
 	struct ttm_buffer_object *bo =
 	    container_of(kref, struct ttm_buffer_object, kref);
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];
 	drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node);
 	ttm_mem_io_lock(man, false);
-//   ttm_mem_io_free_vm(bo);
+	ttm_mem_io_free_vm(bo);
 	ttm_mem_io_unlock(man);
-//   ttm_bo_cleanup_refs_or_queue(bo);
+	ttm_bo_cleanup_refs_or_queue(bo);
-//   kref_put(&bo->list_kref, ttm_bo_release_list);
+	kref_put(&bo->list_kref, ttm_bo_release_list);
+}
 void ttm_bo_unref(struct ttm_buffer_object **p_bo)
+{
 	struct ttm_buffer_object *bo = *p_bo;
 	*p_bo = NULL;
 	kref_put(&bo->kref, ttm_bo_release);
+}
 EXPORT_SYMBOL(ttm_bo_unref);
-#if 0
-int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev)
-{
-	return cancel_delayed_work_sync(&bdev->wq);
-}
-EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue);
-void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched)
-{
-	if (resched)
-		schedule_delayed_work(&bdev->wq,
-				      ((HZ / 100) < 1) ? 1 : HZ / 100);
-}
-EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue);
-static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
-			bool no_wait_gpu)
-{
-	struct ttm_bo_device *bdev = bo->bdev;
-	struct ttm_mem_reg evict_mem;
-	struct ttm_placement placement;
-	int ret = 0;
-	spin_lock(&bdev->fence_lock);
-	ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
-	spin_unlock(&bdev->fence_lock);
-	if (unlikely(ret != 0)) {
-		if (ret != -ERESTARTSYS) {
-			pr_err("Failed to expire sync object before buffer eviction\n");
-		}
-		goto out;
-	}
-//	BUG_ON(!ttm_bo_is_reserved(bo));
-	evict_mem = bo->mem;
-	evict_mem.mm_node = NULL;
-	evict_mem.bus.io_reserved_vm = false;
-	evict_mem.bus.io_reserved_count = 0;
-	placement.fpfn = 0;
-	placement.lpfn = 0;
-	placement.num_placement = 0;
-	placement.num_busy_placement = 0;
-	bdev->driver->evict_flags(bo, &placement);
-	ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible,
-				no_wait_gpu);
-	if (ret) {
-		if (ret != -ERESTARTSYS) {
-			pr_err("Failed to find memory space for buffer 0x%p eviction\n",
-			       bo);
-			ttm_bo_mem_space_debug(bo, &placement);
-		}
-		goto out;
-	}
-	ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible,
-				     no_wait_gpu);
-	if (ret) {
-		if (ret != -ERESTARTSYS)
-			pr_err("Buffer eviction failed\n");
-		ttm_bo_mem_put(bo, &evict_mem);
-		goto out;
-	}
-	bo->evicted = true;
-out:
-	return ret;
-}
-static int ttm_mem_evict_first(struct ttm_bo_device *bdev,
-				uint32_t mem_type,
-				bool interruptible,
-				bool no_wait_gpu)
-{
-	struct ttm_bo_global *glob = bdev->glob;
-	struct ttm_mem_type_manager *man = &bdev->man[mem_type];
-	struct ttm_buffer_object *bo;
-	int ret = -EBUSY, put_count;
-	spin_lock(&glob->lru_lock);
-	list_for_each_entry(bo, &man->lru, lru) {
-		ret = ttm_bo_reserve_nolru(bo, false, true, false, 0);
-		if (!ret)
-			break;
-	}
-	if (ret) {
-		spin_unlock(&glob->lru_lock);
-		return ret;
-	}
-	kref_get(&bo->list_kref);
-	if (!list_empty(&bo->ddestroy)) {
-		ret = ttm_bo_cleanup_refs_and_unlock(bo, interruptible,
-						     no_wait_gpu);
-		kref_put(&bo->list_kref, ttm_bo_release_list);
-		return ret;
-	}
-	put_count = ttm_bo_del_from_lru(bo);
-	spin_unlock(&glob->lru_lock);
-	BUG_ON(ret != 0);
-	ttm_bo_list_ref_sub(bo, put_count, true);
-	ret = ttm_bo_evict(bo, interruptible, no_wait_gpu);
-	ttm_bo_unreserve(bo);
-	kref_put(&bo->list_kref, ttm_bo_release_list);
-	return ret;
-}
 void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem)
+{
 	struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type];
 	if (mem->mm_node)
 		(*man->func->put_node)(man, mem);
+}
 EXPORT_SYMBOL(ttm_bo_mem_put);
 /**
  * Repeatedly evict memory from the LRU for @mem_type until we create enough
  * space, or we've evicted everything and there isn't enough space.
  */
 static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
 					uint32_t mem_type,
 					struct ttm_placement *placement,
 					struct ttm_mem_reg *mem,
 					bool interruptible,
 					bool no_wait_gpu)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_mem_type_manager *man = &bdev->man[mem_type];
 	int ret;
 	do {
-		ret = (*man->func->get_node)(man, bo, placement, mem);
+		ret = (*man->func->get_node)(man, bo, placement, 0, mem);
 		if (unlikely(ret != 0))
 			return ret;
 		if (mem->mm_node)
 			break;
-		ret = ttm_mem_evict_first(bdev, mem_type,
+//		ret = ttm_mem_evict_first(bdev, mem_type,
-					  interruptible, no_wait_gpu);
+//					  interruptible, no_wait_gpu);
-		if (unlikely(ret != 0))
+//		if (unlikely(ret != 0))
-			return ret;
+//			return ret;
 	} while (1);
 	if (mem->mm_node == NULL)
 		return -ENOMEM;
 	mem->mem_type = mem_type;
 	return 0;
+}
 static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man,
 				      uint32_t cur_placement,
 				      uint32_t proposed_placement)
+{
 	uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING;
 	uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING;
 	/**
 	 * Keep current caching if possible.
 	 */
 	if ((cur_placement & caching) != 0)
 		result |= (cur_placement & caching);
 	else if ((man->default_caching & caching) != 0)
 		result |= man->default_caching;
 	else if ((TTM_PL_FLAG_CACHED & caching) != 0)
 		result |= TTM_PL_FLAG_CACHED;
 	else if ((TTM_PL_FLAG_WC & caching) != 0)
 		result |= TTM_PL_FLAG_WC;
 	else if ((TTM_PL_FLAG_UNCACHED & caching) != 0)
 		result |= TTM_PL_FLAG_UNCACHED;
 	return result;
+}
 static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man,
 				 uint32_t mem_type,
 				 uint32_t proposed_placement,
 				 uint32_t *masked_placement)
+{
 	uint32_t cur_flags = ttm_bo_type_flags(mem_type);
 	if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0)
 		return false;
 	if ((proposed_placement & man->available_caching) == 0)
 		return false;
 	cur_flags |= (proposed_placement & man->available_caching);
 	*masked_placement = cur_flags;
 	return true;
+}
 /**
  * Creates space for memory region @mem according to its type.
+ *
  * This function first searches for free space in compatible memory types in
  * the priority order defined by the driver.  If free space isn't found, then
  * ttm_bo_mem_force_space is attempted in priority order to evict and find
  * space.
  */
 int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 			struct ttm_placement *placement,
 			struct ttm_mem_reg *mem,
 			bool interruptible,
 			bool no_wait_gpu)
+{
 	struct ttm_bo_device *bdev = bo->bdev;
 	struct ttm_mem_type_manager *man;
 	uint32_t mem_type = TTM_PL_SYSTEM;
 	uint32_t cur_flags = 0;
 	bool type_found = false;
 	bool type_ok = false;
 	bool has_erestartsys = false;
 	int i, ret;
 	mem->mm_node = NULL;
 	for (i = 0; i < placement->num_placement; ++i) {
 		ret = ttm_mem_type_from_flags(placement->placement[i],
 						&mem_type);
 		if (ret)
 			return ret;
 		man = &bdev->man[mem_type];
 		type_ok = ttm_bo_mt_compatible(man,
 						mem_type,
 						placement->placement[i],
 						&cur_flags);
 		if (!type_ok)
 			continue;
 		cur_flags = ttm_bo_select_caching(man, bo->mem.placement,
 						  cur_flags);
 		/*
 		 * Use the access and other non-mapping-related flag bits from
 		 * the memory placement flags to the current flags
 		 */
 		ttm_flag_masked(&cur_flags, placement->placement[i],
 				~TTM_PL_MASK_MEMTYPE);
 		if (mem_type == TTM_PL_SYSTEM)
 			break;
 		if (man->has_type && man->use_type) {
 			type_found = true;
-			ret = (*man->func->get_node)(man, bo, placement, mem);
+			ret = (*man->func->get_node)(man, bo, placement,
+						     cur_flags, mem);
 			if (unlikely(ret))
 				return ret;
+		}
 		if (mem->mm_node)
 			break;
+	}
 	if ((type_ok && (mem_type == TTM_PL_SYSTEM)) || mem->mm_node) {
 		mem->mem_type = mem_type;
 		mem->placement = cur_flags;
 		return 0;
+	}
 	if (!type_found)
 		return -EINVAL;
 	for (i = 0; i < placement->num_busy_placement; ++i) {
 		ret = ttm_mem_type_from_flags(placement->busy_placement[i],
 						&mem_type);
 		if (ret)
 			return ret;
 		man = &bdev->man[mem_type];
 		if (!man->has_type)
 			continue;
 		if (!ttm_bo_mt_compatible(man,
 						mem_type,
 						placement->busy_placement[i],
 						&cur_flags))
 			continue;
 		cur_flags = ttm_bo_select_caching(man, bo->mem.placement,
 						  cur_flags);
 		/*
 		 * Use the access and other non-mapping-related flag bits from
 		 * the memory placement flags to the current flags
 		 */
 		ttm_flag_masked(&cur_flags, placement->busy_placement[i],
 				~TTM_PL_MASK_MEMTYPE);
 		if (mem_type == TTM_PL_SYSTEM) {
 			mem->mem_type = mem_type;
 			mem->placement = cur_flags;
 			mem->mm_node = NULL;
 			return 0;
+		}
 		ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem,
 						interruptible, no_wait_gpu);
 		if (ret == 0 && mem->mm_node) {
 			mem->placement = cur_flags;
 			return 0;
+		}
 		if (ret == -ERESTARTSYS)
 			has_erestartsys = true;
+	}
 	ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM;
 	return ret;
+}
 EXPORT_SYMBOL(ttm_bo_mem_space);
 static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
 			struct ttm_placement *placement,
 			bool interruptible,
 			bool no_wait_gpu)
+{
 	int ret = 0;
 	struct ttm_mem_reg mem;
 	struct ttm_bo_device *bdev = bo->bdev;
-//	BUG_ON(!ttm_bo_is_reserved(bo));
+	lockdep_assert_held(&bo->resv->lock.base);
 	/*
 	 * FIXME: It's possible to pipeline buffer moves.
 	 * Have the driver move function wait for idle when necessary,
 	 * instead of doing it here.
 	 */
 	spin_lock(&bdev->fence_lock);
 	ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
 	spin_unlock(&bdev->fence_lock);
 	if (ret)
 		return ret;
 	mem.num_pages = bo->num_pages;
 	mem.size = mem.num_pages << PAGE_SHIFT;
 	mem.page_alignment = bo->mem.page_alignment;
 	mem.bus.io_reserved_vm = false;
 	mem.bus.io_reserved_count = 0;
 	/*
 	 * Determine where to move the buffer.
 	 */
 	ret = ttm_bo_mem_space(bo, placement, &mem,
 			       interruptible, no_wait_gpu);
 	if (ret)
 		goto out_unlock;
 	ret = ttm_bo_handle_move_mem(bo, &mem, false,
 				     interruptible, no_wait_gpu);
 out_unlock:
 	if (ret && mem.mm_node)
 		ttm_bo_mem_put(bo, &mem);
 	return ret;
+}
-#endif
 static bool ttm_bo_mem_compat(struct ttm_placement *placement,
 			      struct ttm_mem_reg *mem,
 			      uint32_t *new_flags)
+{
 	int i;
 	if (mem->mm_node && placement->lpfn != 0 &&
 	    (mem->start < placement->fpfn ||
 	     mem->start + mem->num_pages > placement->lpfn))
 		return false;
 	for (i = 0; i < placement->num_placement; i++) {
 		*new_flags = placement->placement[i];
 		if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) &&
 		    (*new_flags & mem->placement & TTM_PL_MASK_MEM))
 			return true;
+	}
 	for (i = 0; i < placement->num_busy_placement; i++) {
 		*new_flags = placement->busy_placement[i];
 		if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) &&
 		    (*new_flags & mem->placement & TTM_PL_MASK_MEM))
 			return true;
+	}
 	return false;
+}
 int ttm_bo_validate(struct ttm_buffer_object *bo,
 			struct ttm_placement *placement,
 			bool interruptible,
 			bool no_wait_gpu)
+{
 	int ret;
 	uint32_t new_flags;
-//	BUG_ON(!ttm_bo_is_reserved(bo));
+	lockdep_assert_held(&bo->resv->lock.base);
 	/* Check that range is valid */
 	if (placement->lpfn || placement->fpfn)
 		if (placement->fpfn > placement->lpfn ||
 			(placement->lpfn - placement->fpfn) < bo->num_pages)
 			return -EINVAL;
 	/*
 	 * Check whether we need to move buffer.
 	 */
 	if (!ttm_bo_mem_compat(placement, &bo->mem, &new_flags)) {
-//       ret = ttm_bo_move_buffer(bo, placement, interruptible,
+		ret = ttm_bo_move_buffer(bo, placement, interruptible,
-//                    no_wait_gpu);
+					 no_wait_gpu);
 		if (ret)
 			return ret;
 	} else {
 		/*
 		 * Use the access and other non-mapping-related flag bits from
 		 * the compatible memory placement flags to the active flags
 		 */
 		ttm_flag_masked(&bo->mem.placement, new_flags,
 				~TTM_PL_MASK_MEMTYPE);
+	}
 	/*
 	 * We might need to add a TTM.
 	 */
 	if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
 		ret = ttm_bo_add_ttm(bo, true);
 		if (ret)
 			return ret;
+	}
 	return 0;
+}
 EXPORT_SYMBOL(ttm_bo_validate);
 int ttm_bo_check_placement(struct ttm_buffer_object *bo,
 				struct ttm_placement *placement)
+{
 	BUG_ON((placement->fpfn || placement->lpfn) &&
 	       (bo->mem.num_pages > (placement->lpfn - placement->fpfn)));
 	return 0;
+}
 int ttm_bo_init(struct ttm_bo_device *bdev,
 		struct ttm_buffer_object *bo,
 		unsigned long size,
 		enum ttm_bo_type type,
 		struct ttm_placement *placement,
 		uint32_t page_alignment,
 		bool interruptible,
 		struct file *persistent_swap_storage,
 		size_t acc_size,
 		struct sg_table *sg,
 		void (*destroy) (struct ttm_buffer_object *))
+{
 	int ret = 0;
 	unsigned long num_pages;
-	struct ttm_mem_global *mem_glob = bdev->glob->mem_glob;
 	bool locked;
-//   ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false);
-	if (ret) {
-		pr_err("Out of kernel memory\n");
-		if (destroy)
-			(*destroy)(bo);
-		else
-			kfree(bo);
-		return -ENOMEM;
-	}
 	num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	if (num_pages == 0) {
 		pr_err("Illegal buffer object size\n");
 		if (destroy)
 			(*destroy)(bo);
 		else
 			kfree(bo);
-//       ttm_mem_global_free(mem_glob, acc_size);
 		return -EINVAL;
+	}
 	bo->destroy = destroy;
 	kref_init(&bo->kref);
 	kref_init(&bo->list_kref);
 	atomic_set(&bo->cpu_writers, 0);
 	INIT_LIST_HEAD(&bo->lru);
 	INIT_LIST_HEAD(&bo->ddestroy);
 	INIT_LIST_HEAD(&bo->swap);
 	INIT_LIST_HEAD(&bo->io_reserve_lru);
 	mutex_init(&bo->wu_mutex);
 	bo->bdev = bdev;
 	bo->glob = bdev->glob;
 	bo->type = type;
 	bo->num_pages = num_pages;
 	bo->mem.size = num_pages << PAGE_SHIFT;
 	bo->mem.mem_type = TTM_PL_SYSTEM;
 	bo->mem.num_pages = bo->num_pages;
 	bo->mem.mm_node = NULL;
 	bo->mem.page_alignment = page_alignment;
 	bo->mem.bus.io_reserved_vm = false;
 	bo->mem.bus.io_reserved_count = 0;
 	bo->priv_flags = 0;
 	bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED);
 	bo->persistent_swap_storage = persistent_swap_storage;
 	bo->acc_size = acc_size;
 	bo->sg = sg;
 	bo->resv = &bo->ttm_resv;
-//   reservation_object_init(bo->resv);
+	reservation_object_init(bo->resv);
 	atomic_inc(&bo->glob->bo_count);
 	drm_vma_node_reset(&bo->vma_node);
 	ret = ttm_bo_check_placement(bo, placement);
 	/*
 	 * For ttm_bo_type_device buffers, allocate
 	 * address space from the device.
 	 */
-//   if (likely(!ret) &&
+	if (likely(!ret) &&
-//       (bo->type == ttm_bo_type_device ||
+	    (bo->type == ttm_bo_type_device ||
-//        bo->type == ttm_bo_type_sg))
+	     bo->type == ttm_bo_type_sg))
+		ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node,
-//       ret = ttm_bo_setup_vm(bo);
+					 bo->mem.num_pages);
-//   if (likely(!ret))
+	locked = ww_mutex_trylock(&bo->resv->lock);
-//   ret = ttm_bo_validate(bo, placement, interruptible, false);
+    WARN_ON(!locked);
+	if (likely(!ret))
+		ret = ttm_bo_validate(bo, placement, interruptible, false);
-//   ttm_bo_unreserve(bo);
+	ttm_bo_unreserve(bo);
-//   if (unlikely(ret))
+	if (unlikely(ret))
-//        ttm_bo_unref(&bo);
+		ttm_bo_unref(&bo);
 	return ret;
+}
 EXPORT_SYMBOL(ttm_bo_init);
 size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
 		       unsigned long bo_size,
 		       unsigned struct_size)
+{
 	unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT;
 	size_t size = 0;
 	size += ttm_round_pot(struct_size);
 	size += PAGE_ALIGN(npages * sizeof(void *));
 	size += ttm_round_pot(sizeof(struct ttm_tt));
 	return size;
+}
 EXPORT_SYMBOL(ttm_bo_acc_size);
 size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
 			   unsigned long bo_size,
 			   unsigned struct_size)
+{
 	unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT;
 	size_t size = 0;
 	size += ttm_round_pot(struct_size);
 	size += PAGE_ALIGN(npages * sizeof(void *));
 	size += PAGE_ALIGN(npages * sizeof(dma_addr_t));
 	size += ttm_round_pot(sizeof(struct ttm_dma_tt));
 	return size;
+}
 EXPORT_SYMBOL(ttm_bo_dma_acc_size);
-int ttm_bo_create(struct ttm_bo_device *bdev,
-			unsigned long size,
-			enum ttm_bo_type type,
-			struct ttm_placement *placement,
-			uint32_t page_alignment,
-			bool interruptible,
-			struct file *persistent_swap_storage,
-			struct ttm_buffer_object **p_bo)
-{
-	struct ttm_buffer_object *bo;
-	size_t acc_size;
-	int ret;
-	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
-	if (unlikely(bo == NULL))
-		return -ENOMEM;
-	acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object));
-	ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment,
-			  interruptible, persistent_swap_storage, acc_size,
-			  NULL, NULL);
-	if (likely(ret == 0))
-		*p_bo = bo;
-	return ret;
-}
-EXPORT_SYMBOL(ttm_bo_create);
 int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type,
 			unsigned long p_size)
+{
     int ret = -EINVAL;
     struct ttm_mem_type_manager *man;
-    ENTER();
 	BUG_ON(type >= TTM_NUM_MEM_TYPES);
     man = &bdev->man[type];
 	BUG_ON(man->has_type);
 	man->io_reserve_fastpath = true;
 	man->use_io_reserve_lru = false;
 	mutex_init(&man->io_reserve_mutex);
 	INIT_LIST_HEAD(&man->io_reserve_lru);
     ret = bdev->driver->init_mem_type(bdev, type, man);
     if (ret)
         return ret;
 	man->bdev = bdev;
     ret = 0;
     if (type != TTM_PL_SYSTEM) {
 		ret = (*man->func->init)(man, p_size);
         if (ret)
             return ret;
+    }
     man->has_type = true;
     man->use_type = true;
     man->size = p_size;
     INIT_LIST_HEAD(&man->lru);
-    LEAVE();
     return 0;
-}
+}
 EXPORT_SYMBOL(ttm_bo_init_mm);
 void ttm_bo_global_release(struct drm_global_reference *ref)
+{
 	struct ttm_bo_global *glob = ref->object;
+}
 EXPORT_SYMBOL(ttm_bo_global_release);
 int ttm_bo_global_init(struct drm_global_reference *ref)
+{
     struct ttm_bo_global_ref *bo_ref =
         container_of(ref, struct ttm_bo_global_ref, ref);
     struct ttm_bo_global *glob = ref->object;
     int ret;
-    ENTER();
 	mutex_init(&glob->device_list_mutex);
 	spin_lock_init(&glob->lru_lock);
     glob->mem_glob = bo_ref->mem_glob;
-    glob->dummy_read_page = AllocPage();
+	glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32);
     if (unlikely(glob->dummy_read_page == NULL)) {
         ret = -ENOMEM;
         goto out_no_drp;
+    }
     INIT_LIST_HEAD(&glob->swap_lru);
     INIT_LIST_HEAD(&glob->device_list);
     atomic_set(&glob->bo_count, 0);
-    LEAVE();
     return 0;
 out_no_drp:
     kfree(glob);
     return ret;
+}
 EXPORT_SYMBOL(ttm_bo_global_init);
 int ttm_bo_device_init(struct ttm_bo_device *bdev,
 		       struct ttm_bo_global *glob,
 		       struct ttm_bo_driver *driver,
+		       struct address_space *mapping,
 		       uint64_t file_page_offset,
 		       bool need_dma32)
+{
 	int ret = -EINVAL;
-    ENTER();
 	bdev->driver = driver;
 	memset(bdev->man, 0, sizeof(bdev->man));
 	/*
 	 * Initialize the system memory buffer type.
 	 * Other types need to be driver / IOCTL initialized.
 	 */
 	ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0);
 	if (unlikely(ret != 0))
 		goto out_no_sys;
 	drm_vma_offset_manager_init(&bdev->vma_manager, file_page_offset,
 x10000000);
-//	INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue);
+	INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue);
 	INIT_LIST_HEAD(&bdev->ddestroy);
-	bdev->dev_mapping = NULL;
+	bdev->dev_mapping = mapping;
 	bdev->glob = glob;
 	bdev->need_dma32 = need_dma32;
 	bdev->val_seq = 0;
 	spin_lock_init(&bdev->fence_lock);
 	mutex_lock(&glob->device_list_mutex);
 	list_add_tail(&bdev->device_list, &glob->device_list);
 	mutex_unlock(&glob->device_list_mutex);
-    LEAVE();
 	return 0;
 out_no_sys:
 	return ret;
+}
 EXPORT_SYMBOL(ttm_bo_device_init);
 /*
  * buffer object vm functions.
  */
 bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
+{
 	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 	if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) {
 		if (mem->mem_type == TTM_PL_SYSTEM)
 			return false;
 		if (man->flags & TTM_MEMTYPE_FLAG_CMA)
 			return false;
 		if (mem->placement & TTM_PL_FLAG_CACHED)
 			return false;
+	}
 	return true;
+}
+void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo)
+{
+	struct ttm_bo_device *bdev = bo->bdev;
+	drm_vma_node_unmap(&bo->vma_node, bdev->dev_mapping);
+	ttm_mem_io_free_vm(bo);
+}
+void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo)
+{
+	struct ttm_bo_device *bdev = bo->bdev;
+	struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];
+	ttm_mem_io_lock(man, false);
+	ttm_bo_unmap_virtual_locked(bo);
+	ttm_mem_io_unlock(man);
+}
+EXPORT_SYMBOL(ttm_bo_unmap_virtual);
 int ttm_bo_wait(struct ttm_buffer_object *bo,
 		bool lazy, bool interruptible, bool no_wait)
+{
 	struct ttm_bo_driver *driver = bo->bdev->driver;
 	struct ttm_bo_device *bdev = bo->bdev;
 	void *sync_obj;
 	int ret = 0;
 	if (likely(bo->sync_obj == NULL))
 		return 0;
-	return 0;
-}
-EXPORT_SYMBOL(ttm_bo_wait);
+	while (bo->sync_obj) {
-int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait)
+		if (driver->sync_obj_signaled(bo->sync_obj)) {
+			void *tmp_obj = bo->sync_obj;
+			bo->sync_obj = NULL;
+			clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
+			spin_unlock(&bdev->fence_lock);
-{
+			driver->sync_obj_unref(&tmp_obj);
+			spin_lock(&bdev->fence_lock);
-	struct ttm_bo_device *bdev = bo->bdev;
+			continue;
-	int ret = 0;
+		}
+		if (no_wait)
+			return -EBUSY;
+		sync_obj = driver->sync_obj_ref(bo->sync_obj);
+		spin_unlock(&bdev->fence_lock);
+		ret = driver->sync_obj_wait(sync_obj,
-	/*
+					    lazy, interruptible);
-	 * Using ttm_bo_reserve makes sure the lru lists are updated.
+		if (unlikely(ret != 0)) {
+			driver->sync_obj_unref(&sync_obj);
+			spin_lock(&bdev->fence_lock);
+	return ret;
+		}
+		spin_lock(&bdev->fence_lock);
+		if (likely(bo->sync_obj == sync_obj)) {
+			void *tmp_obj = bo->sync_obj;
-	 */
+			bo->sync_obj = NULL;
+			clear_bit(TTM_BO_PRIV_FLAG_MOVING,
+				  &bo->priv_flags);
+			spin_unlock(&bdev->fence_lock);
+			driver->sync_obj_unref(&sync_obj);
-	return ret;
+			driver->sync_obj_unref(&tmp_obj);
+			spin_lock(&bdev->fence_lock);
+		} else {
-}
+			spin_unlock(&bdev->fence_lock);
-EXPORT_SYMBOL(ttm_bo_synccpu_write_grab);
+			driver->sync_obj_unref(&sync_obj);
 			spin_lock(&bdev->fence_lock);
-void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo)
+		}
+	}
 	return 0;
 	atomic_dec(&bo->cpu_writers);
 EXPORT_SYMBOL(ttm_bo_wait);
 EXPORT_SYMBOL(ttm_bo_synccpu_write_release);

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/ttm/ttm_bo.c – Rev 4569 → 5078