diff options
author | Ben Skeggs <skeggsb@gmail.com> | 2009-01-30 11:25:35 +1000 |
---|---|---|
committer | Ben Skeggs <skeggsb@gmail.com> | 2009-02-04 14:32:31 +1000 |
commit | 225e7e274f49d5e01fa1ad3fbbb9f1499865fe67 (patch) | |
tree | a0c22755f1fb0df1dd8c635ab63161252a25b5fe /libdrm/nouveau/nouveau_resource.c | |
parent | cb85630c02ddb46f168064befb2296d46b69f57a (diff) |
nouveau: install libdrm_nouveau with libdrm
Diffstat (limited to 'libdrm/nouveau/nouveau_resource.c')
-rw-r--r-- | libdrm/nouveau/nouveau_resource.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libdrm/nouveau/nouveau_resource.c b/libdrm/nouveau/nouveau_resource.c new file mode 100644 index 00000000..1cd37d50 --- /dev/null +++ b/libdrm/nouveau/nouveau_resource.c @@ -0,0 +1,115 @@ +/* + * Copyright 2007 Nouveau Project + * + * 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 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 + * THE AUTHORS 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. + */ + +#include <stdlib.h> +#include <errno.h> + +#include "nouveau_private.h" + +int +nouveau_resource_init(struct nouveau_resource **heap, + unsigned start, unsigned size) +{ + struct nouveau_resource *r; + + r = calloc(1, sizeof(struct nouveau_resource)); + if (!r) + return 1; + + r->start = start; + r->size = size; + *heap = r; + return 0; +} + +int +nouveau_resource_alloc(struct nouveau_resource *heap, int size, void *priv, + struct nouveau_resource **res) +{ + struct nouveau_resource *r; + + if (!heap || !size || !res || *res) + return 1; + + while (heap) { + if (!heap->in_use && heap->size >= size) { + r = calloc(1, sizeof(struct nouveau_resource)); + if (!r) + return 1; + + r->start = (heap->start + heap->size) - size; + r->size = size; + r->in_use = 1; + r->priv = priv; + + heap->size -= size; + + r->next = heap->next; + if (heap->next) + heap->next->prev = r; + r->prev = heap; + heap->next = r; + + *res = r; + return 0; + } + + heap = heap->next; + } + + return 1; +} + +void +nouveau_resource_free(struct nouveau_resource **res) +{ + struct nouveau_resource *r; + + if (!res || !*res) + return; + r = *res; + *res = NULL; + + r->in_use = 0; + + if (r->next && !r->next->in_use) { + struct nouveau_resource *new = r->next; + + new->prev = r->prev; + if (r->prev) + r->prev->next = new; + new->size += r->size; + new->start = r->start; + + free(r); + r = new; + } + + if (r->prev && !r->prev->in_use) { + r->prev->next = r->next; + if (r->next) + r->next->prev = r->prev; + r->prev->size += r->size; + free(r); + } + +} |