path: root/drivers/gpu/drm/nouveau/nouveau_bo.c

/*
 * Copyright 2007 Dave Airlied
 * 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, sublicense,
 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS 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: Dave Airlied <airlied@linux.ie>
 *	    Ben Skeggs   <darktama@iinet.net.au>
 *	    Jeremy Kolb  <jkolb@brandeis.edu>
 */

#include "drmP.h"

#include "nouveau_drm.h"
#include "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_mm.h"
#include "nouveau_vm.h"

#include <linux/log2.h>
#include <linux/slab.h>

static void
nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
{
	struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
	struct drm_device *dev = dev_priv->dev;
	struct nouveau_bo *nvbo = nouveau_bo(bo);

	if (unlikely(nvbo->gem))
		DRM_ERROR("bo %p still attached to GEM object\n", bo);

	nv10_mem_put_tile_region(dev, nvbo->tile, NULL);
	if (nvbo->vma.node) {
		nouveau_vm_unmap(&nvbo->vma);
		nouveau_vm_put(&nvbo->vma);
	}
	kfree(nvbo);
}

static void
nouveau_bo_fixup_align(struct nouveau_bo *nvbo, int *align, int *size,
		       int *page_shift)
{
	struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);

	if (dev_priv->card_type < NV_50) {
		if (nvbo->tile_mode) {
			if (dev_priv->chipset >= 0x40) {
				*align = 65536;
				*size = roundup(*size, 64 * nvbo->tile_mode);

			} else if (dev_priv->chipset >= 0x30) {
				*align = 32768;
				*size = roundup(*size, 64 * nvbo->tile_mode);

			} else if (dev_priv->chipset >= 0x20) {
				*align = 16384;
				*size = roundup(*size, 64 * nvbo->tile_mode);

			} else if (dev_priv->chipset >= 0x10) {
				*align = 16384;
				*size = roundup(*size, 32 * nvbo->tile_mode);
			}
		}
	} else {
		if (likely(dev_priv->chan_vm)) {
			if (*size > 256 * 1024)
				*page_shift = dev_priv->chan_vm->lpg_shift;
			else
				*page_shift = dev_priv->chan_vm->spg_shift;
		} else {
			*page_shift = 12;
		}

		*size = roundup(*size, (1 << *page_shift));
		*align = max((1 << *page_shift), *align);
	}

	*size = roundup(*size, PAGE_SIZE);
}

int
nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
	       int size, int align, uint32_t flags, uint32_t tile_mode,
	       uint32_t tile_flags, bool no_vm, bool mappable,
	       struct nouveau_bo **pnvbo)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_bo *nvbo;
	int ret = 0, page_shift = 0;

	nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
	if (!nvbo)
		return -ENOMEM;
	INIT_LIST_HEAD(&nvbo->head);
	INIT_LIST_HEAD(&