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

/*
 * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
 * Copyright 2005 Stephane Marchesin
 *
 * The Weather Channel (TM) funded Tungsten Graphics to develop the
 * initial release of the Radeon 8500 driver under the XFree86 license.
 * This notice must be preserved.
 *
 * 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
 * THE AUTHORS AND/OR THEIR 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:
 *    Ben Skeggs <bskeggs@redhat.com>
 *    Roy Spliet <r.spliet@student.tudelft.nl>
 */


#include "drmP.h"
#include "drm.h"
#include "drm_sarea.h"

#include "nouveau_drv.h"
#include "nouveau_pm.h"
#include "nouveau_mm.h"
#include "nouveau_vm.h"

/*
 * NV10-NV40 tiling helpers
 */

static void
nv10_mem_update_tile_region(struct drm_device *dev,
			    struct nouveau_tile_reg *tile, uint32_t addr,
			    uint32_t size, uint32_t pitch, uint32_t flags)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
	int i = tile - dev_priv->tile.reg, j;
	unsigned long save;

	nouveau_fence_unref(&tile->fence);

	if (tile->pitch)
		pfb->free_tile_region(dev, i);

	if (pitch)
		pfb->init_tile_region(dev, i, addr, size, pitch, flags);

	spin_lock_irqsave(&dev_priv->context_switch_lock, save);
	pfifo->reassign(dev, false);
	pfifo->cache_pull(dev, false);

	nouveau_wait_for_idle(dev);

	pfb->set_tile_region(dev, i);
	for (j = 0; j < NVOBJ_ENGINE_NR; j++) {
		if (dev_priv->eng[j] && dev_priv->eng[j]->set_tile_region)
			dev_priv->eng[j]->set_tile_region(dev, i);
	}

	pfifo->cache_pull(dev, true);
	pfifo->reassign(dev, true);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, save);
}

static struct nouveau_tile_reg *
nv10_mem_get_tile_region(struct drm_device *dev, int i)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];

	spin_lock(&dev_priv->tile.lock);

	if (!tile->used &&
	    (!tile->fence || nouveau_fence_sig