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authorShaohua Li <shaohua.li@intel.com>2008-08-21 10:46:11 +0800
committerIngo Molnar <mingo@elte.hu>2008-08-21 13:47:46 +0200
commit37acee10f49cf3caa323e05675e8dc9221ef4fd8 (patch)
tree212754bec108fc139d47d3eecaf52bab90cf1603 /drivers/char/agp/generic.c
parentd75586ad01e6c5a30e7337fb87d61e03556a1ecb (diff)
downloadblackbird-op-linux-37acee10f49cf3caa323e05675e8dc9221ef4fd8.tar.gz
blackbird-op-linux-37acee10f49cf3caa323e05675e8dc9221ef4fd8.zip
agp: generic_alloc_pages()
Add agp_generic_alloc_pages(), it uses new pageattr array interface API. Signed-off-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/char/agp/generic.c')
-rw-r--r--drivers/char/agp/generic.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index eaa1a355bb32..13a5577ee434 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -264,6 +264,15 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge,
if (new == NULL)
return NULL;
+ if (bridge->driver->agp_alloc_pages) {
+ if (bridge->driver->agp_alloc_pages(bridge, new, page_count)) {
+ agp_free_memory(new);
+ return NULL;
+ }
+ new->bridge = bridge;
+ return new;
+ }
+
for (i = 0; i < page_count; i++) {
void *addr = bridge->driver->agp_alloc_page(bridge);
@@ -1178,6 +1187,39 @@ EXPORT_SYMBOL(agp_generic_alloc_user);
* against a maximum value.
*/
+int agp_generic_alloc_pages(struct agp_bridge_data *bridge, struct agp_memory *mem, size_t num_pages)
+{
+ struct page * page;
+ int i, ret = -ENOMEM;
+
+ for (i = 0; i < num_pages; i++) {
+ page = alloc_page(GFP_KERNEL | GFP_DMA32);
+ /* agp_free_memory() needs gart address */
+ if (page == NULL)
+ goto out;
+
+#ifndef CONFIG_X86
+ map_page_into_agp(page);
+#endif
+ get_page(page);
+ atomic_inc(&agp_bridge->current_memory_agp);
+
+ /* set_memory_array_uc() needs virtual address */
+ mem->memory[i] = (unsigned long)page_address(page);
+ mem->page_count++;
+ }
+
+#ifdef CONFIG_X86
+ set_memory_array_uc(mem->memory, num_pages);
+#endif
+ ret = 0;
+out:
+ for (i = 0; i < mem->page_count; i++)
+ mem->memory[i] = virt_to_gart((void *)mem->memory[i]);
+ return ret;
+}
+EXPORT_SYMBOL(agp_generic_alloc_pages);
+
void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
{
struct page * page;
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