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path: root/drivers/gpu/drm/radeon/radeon_mem.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_mem.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_mem.c302
1 files changed, 0 insertions, 302 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_mem.c b/drivers/gpu/drm/radeon/radeon_mem.c
deleted file mode 100644
index 146d253f1131..000000000000
--- a/drivers/gpu/drm/radeon/radeon_mem.c
+++ /dev/null
@@ -1,302 +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>
- *
- * ------------------------ This file is DEPRECATED! -------------------------
- */
-
-#include <drm/drmP.h>
-#include <drm/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,
- struct drm_file *file_priv)
-{
- /* Maybe cut off the start of an existing block */
- if (start > p->start) {
- struct mem_block *newblock = kmalloc(sizeof(*newblock),
- GFP_KERNEL);
- if (!newblock)
- goto out;
- newblock->start = start;
- newblock->size = p->size - (start - p->start);
- newblock->file_priv = 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 = kmalloc(sizeof(*newblock),
- GFP_KERNEL);
- if (!newblock)
- goto out;
- newblock->start = start + size;
- newblock->size = p->size - size;
- newblock->file_priv = 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->file_priv = file_priv;
- return p;
-}
-
-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;
-
- list_for_each(p, heap) {
- int start = (p->start + mask) & ~mask;
- if (p->file_priv == NULL && 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)
-{
- struct mem_block *p;
-
- list_for_each(p, heap)
- if (p->start == start)
- return p;
-
- return NULL;
-}
-
-static void free_block(struct mem_block *p)
-{
- p->file_priv = NULL;
-
- /* Assumes a single contiguous range. Needs a special file_priv in
- * 'heap' to stop it being subsumed.
- */
- if (p->next->file_priv == NULL) {
- struct mem_block *q = p->next;
- p->size += q->size;
- p->next = q->next;
- p->next->prev = p;
- kfree(q);
- }
-
- if (p->prev->file_priv == NULL) {
- struct mem_block *q = p->prev;
- q->size += p->size;
- q->next = p->next;
- q->next->prev = q;
- kfree(p);
- }
-}
-
-/* Initialize. How to check for an uninitialized heap?
- */
-static int init_heap(struct mem_block **heap, int start, int size)
-{
- struct mem_block *blocks = kmalloc(sizeof(*blocks), GFP_KERNEL);
-
- if (!blocks)
- return -ENOMEM;
-
- *heap = kzalloc(sizeof(**heap), GFP_KERNEL);
- if (!*heap) {
- kfree(blocks);
- return -ENOMEM;
- }
-
- blocks->start = start;
- blocks->size = size;
- blocks->file_priv = NULL;
- blocks->next = blocks->prev = *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(struct drm_file *file_priv, struct mem_block *heap)
-{
- struct mem_block *p;
-
- if (!heap || !heap->next)
- return;
-
- list_for_each(p, heap) {
- if (p->file_priv == file_priv)
- p->file_priv = NULL;
- }
-
- /* Assumes a single contiguous range. Needs a special file_priv in
- * 'heap' to stop it being subsumed.
- */
- list_for_each(p, heap) {
- while (p->file_priv == NULL && p->next->file_priv == NULL) {
- struct mem_block *q = p->next;
- p->size += q->size;
- p->next = q->next;
- p->next->prev = p;
- kfree(q);
- }
- }
-}
-
-/* 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;
- kfree(q);
- }
-
- kfree(*heap);
- *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(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 mem_block *block, **heap;
-
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
-
- heap = get_heap(dev_priv, alloc->region);
- if (!heap || !*heap)
- return -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, file_priv);
-
- if (!block)
- return -ENOMEM;
-
- if (copy_to_user(alloc->region_offset, &block->start,
- sizeof(int))) {
- DRM_ERROR("copy_to_user\n");
- 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 mem_block *block, **heap;
-
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
-
- heap = get_heap(dev_priv, memfree->region);
- if (!heap || !*heap)
- return -EFAULT;
-
- block = find_block(*heap, memfree->region_offset);
- if (!block)
- return -EFAULT;
-
- if (block->file_priv != file_priv)
- return -EPERM;
-
- free_block(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 mem_block **heap;
-
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
-
- heap = get_heap(dev_priv, initheap->region);
- if (!heap)
- return -EFAULT;
-
- if (*heap) {
- DRM_ERROR("heap already initialized?");
- return -EFAULT;
- }
-
- return init_heap(heap, initheap->start, initheap->size);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-23 09:15:09 +0000