C++ (Cpp) drm_mm_search_free_in_range Examples

Example #1

File: ttm_bo.c Project: kvaneesh/linux-kvm

static int ttm_bo_man_get_node(struct ttm_buffer_object *bo,
				struct ttm_mem_type_manager *man,
				struct ttm_placement *placement,
				struct ttm_mem_reg *mem,
				struct drm_mm_node **node)
{
	struct ttm_bo_global *glob = bo->glob;
	unsigned long lpfn;
	int ret;

	lpfn = placement->lpfn;
	if (!lpfn)
		lpfn = man->size;
	*node = NULL;
	do {
		ret = drm_mm_pre_get(&man->manager);
		if (unlikely(ret))
			return ret;

		spin_lock(&glob->lru_lock);
		*node = drm_mm_search_free_in_range(&man->manager,
					mem->num_pages, mem->page_alignment,
					placement->fpfn, lpfn, 1);
		if (unlikely(*node == NULL)) {
			spin_unlock(&glob->lru_lock);
			return 0;
		}
		*node = drm_mm_get_block_atomic_range(*node, mem->num_pages,
							mem->page_alignment,
							placement->fpfn,
							lpfn);
		spin_unlock(&glob->lru_lock);
	} while (*node == NULL);
	return 0;
}

Example #2

File: nouveau_notifier.c Project: 1111saeid/jb_kernel_3.0.16_htc_golfu

int
nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
		       int size, uint32_t start, uint32_t end,
		       uint32_t *b_offset)
{
	struct drm_device *dev = chan->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_gpuobj *nobj = NULL;
	struct drm_mm_node *mem;
	uint32_t offset;
	int target, ret;

	mem = drm_mm_search_free_in_range(&chan->notifier_heap, size, 0,
					  start, end, 0);
	if (mem)
		mem = drm_mm_get_block_range(mem, size, 0, start, end);
	if (!mem) {
		NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
		return -ENOMEM;
	}

	if (dev_priv->card_type < NV_50) {
		if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM)
			target = NV_MEM_TARGET_VRAM;
		else
			target = NV_MEM_TARGET_GART;
		offset  = chan->notifier_bo->bo.mem.start << PAGE_SHIFT;
	} else {
		target = NV_MEM_TARGET_VM;
		offset = chan->notifier_bo->vma.offset;
	}
	offset += mem->start;

	ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset,
				     mem->size, NV_MEM_ACCESS_RW, target,
				     &nobj);
	if (ret) {
		drm_mm_put_block(mem);
		NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
		return ret;
	}
	nobj->dtor = nouveau_notifier_gpuobj_dtor;
	nobj->priv = mem;

	ret = nouveau_ramht_insert(chan, handle, nobj);
	nouveau_gpuobj_ref(NULL, &nobj);
	if (ret) {
		drm_mm_put_block(mem);
		NV_ERROR(dev, "Error adding notifier to ramht: %d\n", ret);
		return ret;
	}

	*b_offset = mem->start;
	return 0;
}

Example #3

File: ttm_bo_manager.c Project: bjayesh/chandra

static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
			       struct ttm_buffer_object *bo,
			       struct ttm_placement *placement,
			       struct ttm_mem_reg *mem)
{
	struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
	struct drm_mm *mm = &rman->mm;
	struct drm_mm_node *node = NULL;
	unsigned long lpfn;
	int ret;

	lpfn = placement->lpfn;
	if (!lpfn)
		lpfn = man->size;
	do {
		ret = drm_mm_pre_get(mm);
		if (unlikely(ret))
			return ret;

		spin_lock(&rman->lock);
		node = drm_mm_search_free_in_range(mm,
					mem->num_pages, mem->page_alignment,
					placement->fpfn, lpfn,
					DRM_MM_SEARCH_BEST);
		if (unlikely(node == NULL)) {
			spin_unlock(&rman->lock);
			return 0;
		}
		node = drm_mm_get_block_atomic_range(node, mem->num_pages,
						     mem->page_alignment,
						     placement->fpfn,
						     lpfn);
		spin_unlock(&rman->lock);
	} while (node == NULL);

	mem->mm_node = node;
	mem->start = node->start;
	return 0;
}