2 * Copyright 2007 Nouveau Project
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 #include "nouveau_private.h"
29 nouveau_resource_init(struct nouveau_resource **heap,
30 unsigned start, unsigned size)
32 struct nouveau_resource *r;
34 r = calloc(1, sizeof(struct nouveau_resource));
45 nouveau_resource_alloc(struct nouveau_resource *heap, int size, void *priv,
46 struct nouveau_resource **res)
48 struct nouveau_resource *r;
50 if (!heap || !size || !res || *res)
54 if (!heap->in_use && heap->size >= size) {
55 r = calloc(1, sizeof(struct nouveau_resource));
59 r->start = (heap->start + heap->size) - size;
83 nouveau_resource_free(struct nouveau_resource **res)
85 struct nouveau_resource *r;
94 if (r->next && !r->next->in_use) {
95 struct nouveau_resource *new = r->next;
100 new->size += r->size;
101 new->start = r->start;
107 if (r->prev && !r->prev->in_use) {
108 r->prev->next = r->next;
110 r->next->prev = r->prev;
111 r->prev->size += r->size;