-/* radeon_mem.c -- Simple GART/fb memory manager for radeon -*- linux-c -*-
- *
+/* radeon_mem.c -- Simple GART/fb memory manager for radeon -*- linux-c -*- */
+/*
* 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.
#include "radeon_drv.h"
/* Very simple allocator for GART memory, working on a static range
- * already mapped into each client's address space.
+ * already mapped into each client's address space.
*/
static struct mem_block *split_block(struct mem_block *p, int start, int size,
- DRMFILE filp )
+ struct drm_file *file_priv)
{
/* Maybe cut off the start of an existing block */
if (start > p->start) {
- struct mem_block *newblock = drm_alloc(sizeof(*newblock), DRM_MEM_BUFS );
- if (!newblock)
+ struct mem_block *newblock =
+ drm_alloc(sizeof(*newblock), DRM_MEM_BUFS);
+ if (!newblock)
goto out;
newblock->start = start;
newblock->size = p->size - (start - p->start);
- newblock->filp = NULL;
+ newblock->file_priv = NULL;
newblock->next = p->next;
newblock->prev = p;
p->next->prev = newblock;
p->size -= newblock->size;
p = newblock;
}
-
+
/* Maybe cut off the end of an existing block */
if (size < p->size) {
- struct mem_block *newblock = drm_alloc(sizeof(*newblock), DRM_MEM_BUFS );
+ struct mem_block *newblock =
+ drm_alloc(sizeof(*newblock), DRM_MEM_BUFS);
if (!newblock)
goto out;
newblock->start = start + size;
newblock->size = p->size - size;
- newblock->filp = NULL;
+ newblock->file_priv = NULL;
newblock->next = p->next;
newblock->prev = p;
p->next->prev = newblock;
p->size = size;
}
- out:
+ out:
/* Our block is in the middle */
- p->filp = filp;
+ p->file_priv = file_priv;
return p;
}
-static struct mem_block *alloc_block( struct mem_block *heap, int size,
- int align2, DRMFILE filp )
+static struct mem_block *alloc_block(struct mem_block *heap, int size,
+ int align2, struct drm_file *file_priv)
{
struct mem_block *p;
- int mask = (1 << align2)-1;
+ int mask = (1 << align2) - 1;
list_for_each(p, heap) {
int start = (p->start + mask) & ~mask;
- if (p->filp == 0 && start + size <= p->start + p->size)
- return split_block( p, start, size, filp );
+ if (p->file_priv == 0 && start + size <= p->start + p->size)
+ return split_block(p, start, size, file_priv);
}
return NULL;
}
-static struct mem_block *find_block( struct mem_block *heap, int start )
+static struct mem_block *find_block(struct mem_block *heap, int start)
{
struct mem_block *p;
list_for_each(p, heap)
- if (p->start == start)
- return p;
+ if (p->start == start)
+ return p;
return NULL;
}
-
-static void free_block( struct mem_block *p )
+static void free_block(struct mem_block *p)
{
- p->filp = NULL;
+ p->file_priv = NULL;
- /* Assumes a single contiguous range. Needs a special filp in
+ /* Assumes a single contiguous range. Needs a special file_priv in
* 'heap' to stop it being subsumed.
*/
- if (p->next->filp == 0) {
+ if (p->next->file_priv == 0) {
struct mem_block *q = p->next;
p->size += q->size;
p->next = q->next;
p->next->prev = p;
- drm_free(q, sizeof(*q), DRM_MEM_BUFS );
+ drm_free(q, sizeof(*q), DRM_MEM_BUFS);
}
- if (p->prev->filp == 0) {
+ if (p->prev->file_priv == 0) {
struct mem_block *q = p->prev;
q->size += p->size;
q->next = p->next;
q->next->prev = q;
- drm_free(p, sizeof(*q), DRM_MEM_BUFS );
+ drm_free(p, sizeof(*q), DRM_MEM_BUFS);
}
}
*/
static int init_heap(struct mem_block **heap, int start, int size)
{
- struct mem_block *blocks = drm_alloc(sizeof(*blocks), DRM_MEM_BUFS );
+ struct mem_block *blocks = drm_alloc(sizeof(*blocks), DRM_MEM_BUFS);
+
+ if (!blocks)
+ return -ENOMEM;
- if (!blocks)
- return DRM_ERR(ENOMEM);
-
- *heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFS );
+ *heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFS);
if (!*heap) {
- drm_free( blocks, sizeof(*blocks), DRM_MEM_BUFS );
- return DRM_ERR(ENOMEM);
+ drm_free(blocks, sizeof(*blocks), DRM_MEM_BUFS);
+ return -ENOMEM;
}
blocks->start = start;
blocks->size = size;
- blocks->filp = NULL;
+ blocks->file_priv = NULL;
blocks->next = blocks->prev = *heap;
- memset( *heap, 0, sizeof(**heap) );
- (*heap)->filp = (DRMFILE) -1;
+ memset(*heap, 0, sizeof(**heap));
+ (*heap)->file_priv = (struct drm_file *) - 1;
(*heap)->next = (*heap)->prev = blocks;
return 0;
}
-
/* Free all blocks associated with the releasing file.
*/
-void radeon_mem_release( DRMFILE filp, struct mem_block *heap )
+void radeon_mem_release(struct drm_file *file_priv, struct mem_block *heap)
{
struct mem_block *p;
return;
list_for_each(p, heap) {
- if (p->filp == filp)
- p->filp = NULL;
+ if (p->file_priv == file_priv)
+ p->file_priv = NULL;
}
- /* Assumes a single contiguous range. Needs a special filp in
+ /* Assumes a single contiguous range. Needs a special file_priv in
* 'heap' to stop it being subsumed.
*/
list_for_each(p, heap) {
- while (p->filp == 0 && p->next->filp == 0) {
+ while (p->file_priv == 0 && p->next->file_priv == 0) {
struct mem_block *q = p->next;
p->size += q->size;
p->next = q->next;
p->next->prev = p;
- drm_free(q, sizeof(*q),DRM_MEM_DRIVER);
+ drm_free(q, sizeof(*q), DRM_MEM_DRIVER);
}
}
}
/* Shutdown.
*/
-void radeon_mem_takedown( struct mem_block **heap )
+void radeon_mem_takedown(struct mem_block **heap)
{
struct mem_block *p;
-
+
if (!*heap)
return;
- for (p = (*heap)->next ; p != *heap ; ) {
+ for (p = (*heap)->next; p != *heap;) {
struct mem_block *q = p;
p = p->next;
- drm_free(q, sizeof(*q),DRM_MEM_DRIVER);
+ drm_free(q, sizeof(*q), DRM_MEM_DRIVER);
}
- drm_free( *heap, sizeof(**heap),DRM_MEM_DRIVER );
+ drm_free(*heap, sizeof(**heap), DRM_MEM_DRIVER);
*heap = NULL;
}
-
-
/* IOCTL HANDLERS */
-static struct mem_block **get_heap( drm_radeon_private_t *dev_priv,
- int region )
+static struct mem_block **get_heap(drm_radeon_private_t * dev_priv, int region)
{
- switch( region ) {
+ switch (region) {
case RADEON_MEM_REGION_GART:
- return &dev_priv->gart_heap;
+ return &dev_priv->gart_heap;
case RADEON_MEM_REGION_FB:
return &dev_priv->fb_heap;
default:
}
}
-int radeon_mem_alloc( DRM_IOCTL_ARGS )
+int radeon_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_alloc_t alloc;
+ drm_radeon_mem_alloc_t *alloc = data;
struct mem_block *block, **heap;
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(EINVAL);
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
}
- DRM_COPY_FROM_USER_IOCTL( alloc, (drm_radeon_mem_alloc_t __user *)data,
- sizeof(alloc) );
-
- heap = get_heap( dev_priv, alloc.region );
+ heap = get_heap(dev_priv, alloc->region);
if (!heap || !*heap)
- return DRM_ERR(EFAULT);
-
+ return -EFAULT;
+
/* Make things easier on ourselves: all allocations at least
* 4k aligned.
*/
- if (alloc.alignment < 12)
- alloc.alignment = 12;
+ if (alloc->alignment < 12)
+ alloc->alignment = 12;
- block = alloc_block( *heap, alloc.size, alloc.alignment,
- filp );
+ block = alloc_block(*heap, alloc->size, alloc->alignment, file_priv);
- if (!block)
- return DRM_ERR(ENOMEM);
+ if (!block)
+ return -ENOMEM;
- if ( DRM_COPY_TO_USER( alloc.region_offset, &block->start,
- sizeof(int) ) ) {
- DRM_ERROR( "copy_to_user\n" );
- return DRM_ERR(EFAULT);
+ if (DRM_COPY_TO_USER(alloc->region_offset, &block->start,
+ sizeof(int))) {
+ DRM_ERROR("copy_to_user\n");
+ return -EFAULT;
}
-
+
return 0;
}
-
-
-int radeon_mem_free( DRM_IOCTL_ARGS )
+int radeon_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_free_t memfree;
+ drm_radeon_mem_free_t *memfree = data;
struct mem_block *block, **heap;
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(EINVAL);
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
}
- DRM_COPY_FROM_USER_IOCTL( memfree, (drm_radeon_mem_free_t __user *)data,
- sizeof(memfree) );
-
- heap = get_heap( dev_priv, memfree.region );
+ heap = get_heap(dev_priv, memfree->region);
if (!heap || !*heap)
- return DRM_ERR(EFAULT);
-
- block = find_block( *heap, memfree.region_offset );
+ return -EFAULT;
+
+ block = find_block(*heap, memfree->region_offset);
if (!block)
- return DRM_ERR(EFAULT);
+ return -EFAULT;
- if (block->filp != filp)
- return DRM_ERR(EPERM);
+ if (block->file_priv != file_priv)
+ return -EPERM;
- free_block( block );
+ free_block(block);
return 0;
}
-int radeon_mem_init_heap( DRM_IOCTL_ARGS )
+int radeon_mem_init_heap(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_init_heap_t initheap;
+ drm_radeon_mem_init_heap_t *initheap = data;
struct mem_block **heap;
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(EINVAL);
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
}
- DRM_COPY_FROM_USER_IOCTL( initheap, (drm_radeon_mem_init_heap_t __user *)data,
- sizeof(initheap) );
+ heap = get_heap(dev_priv, initheap->region);
+ if (!heap)
+ return -EFAULT;
- heap = get_heap( dev_priv, initheap.region );
- if (!heap)
- return DRM_ERR(EFAULT);
-
if (*heap) {
DRM_ERROR("heap already initialized?");
- return DRM_ERR(EFAULT);
+ return -EFAULT;
}
-
- return init_heap( heap, initheap.start, initheap.size );
-}
-
+ return init_heap(heap, initheap->start, initheap->size);
+}
projects / linux-2.6-omap-h63xx.git / blobdiff