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/*
* Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
*
* 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
* PRECISION INSIGHT 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:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "drmP.h"
#include "drm.h"
#include "radeon_drm.h"
#include "radeon_drv.h"
struct drm_heap *radeon_get_heap(drm_radeon_private_t *, int);
/* Free all blocks associated with the releasing file.
*/
void
radeon_mem_release(struct drm_file *file_priv, struct drm_heap *heap)
{
struct drm_mem *p, *q;
if (heap == NULL || TAILQ_EMPTY(heap))
return;
TAILQ_FOREACH(p, heap, link) {
if (p->file_priv == file_priv)
p->file_priv = NULL;
}
/* Coalesce the entries. ugh... */
for (p = TAILQ_FIRST(heap); p != TAILQ_END(heap); p = q) {
while (p->file_priv == NULL &&
(q = TAILQ_NEXT(p, link)) != TAILQ_END(heap) &&
q->file_priv == NULL) {
p->size += q->size;
TAILQ_REMOVE(heap, q, link);
drm_free(q);
}
q = TAILQ_NEXT(p, link);
}
}
/* Shutdown.
*/
void
radeon_mem_takedown(struct drm_heap *heap)
{
struct drm_mem *p;
if (heap == NULL)
return;
while ((p = TAILQ_FIRST(heap)) != NULL) {
TAILQ_REMOVE(heap, p, link);
drm_free(p);
}
}
/* IOCTL HANDLERS */
struct drm_heap *
radeon_get_heap(drm_radeon_private_t * dev_priv, int region)
{
switch (region) {
case RADEON_MEM_REGION_GART:
return (&dev_priv->gart_heap);
case RADEON_MEM_REGION_FB:
return (&dev_priv->fb_heap);
default:
return (NULL);
}
}
int
radeon_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_mem_alloc_t *alloc = data;
struct drm_heap *heap;
struct drm_mem *block;
if (dev_priv == NULL) {
DRM_ERROR("called with no initialization\n");
return (EINVAL);
}
heap = radeon_get_heap(dev_priv, alloc->region);
if (heap == NULL)
return (EFAULT);
/*
* Make things easier on ourselves: all allocations at least
* 4k aligned.
*/
if (alloc->alignment < 12)
alloc->alignment = 12;
block = drm_alloc_block(heap, alloc->size, alloc->alignment, file_priv);
if (block == NULL)
return (ENOMEM);
if (DRM_COPY_TO_USER(alloc->region_offset, &block->start, sizeof(int)))
return (EFAULT);
return 0;
}
int
radeon_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_mem_free_t *memfree = data;
struct drm_heap *heap;
struct drm_mem *block;
if (dev_priv == NULL) {
DRM_ERROR("called with no initialization\n");
return (EINVAL);
}
heap = radeon_get_heap(dev_priv, memfree->region);
if (heap == NULL)
return (EFAULT);
block = drm_find_block(heap, memfree->region_offset);
if (block == NULL)
return (EFAULT);
if (block->file_priv != file_priv)
return (EPERM);
drm_free_block(heap, block);
return (0);
}
int
radeon_mem_init_heap(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_mem_init_heap_t *initheap = data;
struct drm_heap *heap;
if (dev_priv == NULL) {
DRM_ERROR("called with no initialization\n");
return (EINVAL);
}
/* Make sure it's valid and initialised */
heap = radeon_get_heap(dev_priv, initheap->region);
if (heap == NULL || !TAILQ_EMPTY(heap))
return (EFAULT);
return (drm_init_heap(heap, initheap->start, initheap->size));
}
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