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-rw-r--r--shared/radeon_mem.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/shared/radeon_mem.c b/shared/radeon_mem.c
deleted file mode 100644
index 9d7fded7..00000000
--- a/shared/radeon_mem.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/* 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.
- *
- * 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 "radeon.h"
-#include "drmP.h"
-#include "drm.h"
-#include "radeon_drm.h"
-#include "radeon_drv.h"
-
-/* Very simple allocator for GART memory, working on a static range
- * already mapped into each client's address space.
- */
-
-static struct mem_block *split_block(struct mem_block *p, int start, int size,
- DRMFILE filp )
-{
- /* 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)
- goto out;
- newblock->start = start;
- newblock->size = p->size - (start - p->start);
- newblock->filp = NULL;
- newblock->next = p->next;
- newblock->prev = p;
- p->next->prev = newblock;
- p->next = 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 );
- if (!newblock)
- goto out;
- newblock->start = start + size;
- newblock->size = p->size - size;
- newblock->filp = NULL;
- newblock->next = p->next;
- newblock->prev = p;
- p->next->prev = newblock;
- p->next = newblock;
- p->size = size;
- }
-
- out:
- /* Our block is in the middle */
- p->filp = filp;
- return p;
-}
-
-static struct mem_block *alloc_block( struct mem_block *heap, int size,
- int align2, DRMFILE filp )
-{
- struct mem_block *p;
- int mask = (1 << align2)-1;
-
- for (p = heap->next ; p != heap ; p = p->next) {
- int start = (p->start + mask) & ~mask;
- if (p->filp == 0 && start + size <= p->start + p->size)
- return split_block( p, start, size, filp );
- }
-
- return NULL;
-}
-
-static struct mem_block *find_block( struct mem_block *heap, int start )
-{
- struct mem_block *p;
-
- for (p = heap->next ; p != heap ; p = p->next)
- if (p->start == start)
- return p;
-
- return NULL;
-}
-
-
-static void free_block( struct mem_block *p )
-{
- p->filp = NULL;
-
- /* Assumes a single contiguous range. Needs a special filp in
- * 'heap' to stop it being subsumed.
- */
- if (p->next->filp == 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 );
- }
-
- if (p->prev->filp == 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 );
- }
-}
-
-/* Initialize. How to check for an uninitialized heap?
- */
-static int init_heap(struct mem_block **heap, int start, int size)
-{
- struct mem_block *blocks = DRM(alloc)(sizeof(*blocks), DRM_MEM_BUFS );
-
- if (!blocks)
- return DRM_ERR(ENOMEM);
-
- *heap = DRM(alloc)(sizeof(**heap), DRM_MEM_BUFS );
- if (!*heap) {
- DRM(free)( blocks, sizeof(*blocks), DRM_MEM_BUFS );
- return DRM_ERR(ENOMEM);
- }
-
- blocks->start = start;
- blocks->size = size;
- blocks->filp = NULL;
- blocks->next = blocks->prev = *heap;
-
- memset( *heap, 0, sizeof(**heap) );
- (*heap)->filp = (DRMFILE) -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 )
-{
- struct mem_block *p;
-
- if (!heap || !heap->next)
- return;
-
- for (p = heap->next ; p != heap ; p = p->next) {
- if (p->filp == filp)
- p->filp = NULL;
- }
-
- /* Assumes a single contiguous range. Needs a special filp in
- * 'heap' to stop it being subsumed.
- */
- for (p = heap->next ; p != heap ; p = p->next) {
- while (p->filp == 0 && p->next->filp == 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);
- }
- }
-}
-
-/* Shutdown.
- */
-void radeon_mem_takedown( struct mem_block **heap )
-{
- struct mem_block *p;
-
- if (!*heap)
- return;
-
- for (p = (*heap)->next ; p != *heap ; ) {
- struct mem_block *q = p;
- p = p->next;
- DRM(free)(q, sizeof(*q),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 )
-{
- 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( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_alloc_t alloc;
- struct mem_block *block, **heap;
-
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(EINVAL);
- }
-
- DRM_COPY_FROM_USER_IOCTL( alloc, (drm_radeon_mem_alloc_t __user *)data,
- sizeof(alloc) );
-
- heap = get_heap( dev_priv, alloc.region );
- if (!heap || !*heap)
- return DRM_ERR(EFAULT);
-
- /* Make things easier on ourselves: all allocations at least
- * 4k aligned.
- */
- if (alloc.alignment < 12)
- alloc.alignment = 12;
-
- block = alloc_block( *heap, alloc.size, alloc.alignment,
- filp );
-
- if (!block)
- return DRM_ERR(ENOMEM);
-
- if ( DRM_COPY_TO_USER( alloc.region_offset, &block->start,
- sizeof(int) ) ) {
- DRM_ERROR( "copy_to_user\n" );
- return DRM_ERR(EFAULT);
- }
-
- return 0;
-}
-
-
-
-int radeon_mem_free( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_free_t memfree;
- struct mem_block *block, **heap;
-
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(EINVAL);
- }
-
- DRM_COPY_FROM_USER_IOCTL( memfree, (drm_radeon_mem_free_t __user *)data,
- sizeof(memfree) );
-
- heap = get_heap( dev_priv, memfree.region );
- if (!heap || !*heap)
- return DRM_ERR(EFAULT);
-
- block = find_block( *heap, memfree.region_offset );
- if (!block)
- return DRM_ERR(EFAULT);
-
- if (block->filp != filp)
- return DRM_ERR(EPERM);
-
- free_block( block );
- return 0;
-}
-
-int radeon_mem_init_heap( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_mem_init_heap_t initheap;
- struct mem_block **heap;
-
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
- return DRM_ERR(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 DRM_ERR(EFAULT);
-
- if (*heap) {
- DRM_ERROR("heap already initialized?");
- return DRM_ERR(EFAULT);
- }
-
- return init_heap( heap, initheap.start, initheap.size );
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 01:38:43 +0000