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提交 37acee10 编写于 作者: S Shaohua Li 提交者： Ingo Molnar
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agp: generic_alloc_pages() 

Add agp_generic_alloc_pages(), it uses new pageattr array interface API.
Signed-off-by: NDave Airlie <airlied@gmail.com>
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 d75586ad
隐藏空白更改
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Showing with 59 addition and 0 deletion
drivers/char/agp/agp.h
浏览文件 @ 37acee10
......@@ -116,6 +116,7 @@ struct agp_bridge_driver {
struct agp_memory *(*alloc_by_type) (size_t, int);
void (*free_by_type)(struct agp_memory *);
void *(*agp_alloc_page)(struct agp_bridge_data *);
int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
void (*agp_destroy_page)(void *, int flags);
int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
void (*chipset_flush)(struct agp_bridge_data *);
......@@ -274,6 +275,8 @@ int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
void agp_generic_free_by_type(struct agp_memory *curr);
void *agp_generic_alloc_page(struct agp_bridge_data *bridge);
int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
struct agp_memory *memory, size_t page_count);
void agp_generic_destroy_page(void *addr, int flags);
void agp_free_key(int key);
int agp_num_entries(void);
......
drivers/char/agp/generic.c
浏览文件 @ 37acee10
......@@ -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;
......
drivers/char/agp/intel-agp.c
浏览文件 @ 37acee10
......@@ -1703,6 +1703,7 @@ static const struct agp_bridge_driver intel_generic_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1728,6 +1729,7 @@ static const struct agp_bridge_driver intel_810_driver = {
.alloc_by_type = intel_i810_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1752,6 +1754,7 @@ static const struct agp_bridge_driver intel_815_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1777,6 +1780,7 @@ static const struct agp_bridge_driver intel_830_driver = {
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = intel_i830_type_to_mask_type,
.chipset_flush = intel_i830_chipset_flush,
......@@ -1802,6 +1806,7 @@ static const struct agp_bridge_driver intel_820_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1826,6 +1831,7 @@ static const struct agp_bridge_driver intel_830mp_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1850,6 +1856,7 @@ static const struct agp_bridge_driver intel_840_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1874,6 +1881,7 @@ static const struct agp_bridge_driver intel_845_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
.chipset_flush = intel_i830_chipset_flush,
......@@ -1899,6 +1907,7 @@ static const struct agp_bridge_driver intel_850_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1923,6 +1932,7 @@ static const struct agp_bridge_driver intel_860_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -1948,6 +1958,7 @@ static const struct agp_bridge_driver intel_915_driver = {
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = intel_i830_type_to_mask_type,
.chipset_flush = intel_i915_chipset_flush,
......@@ -1974,6 +1985,7 @@ static const struct agp_bridge_driver intel_i965_driver = {
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = intel_i830_type_to_mask_type,
.chipset_flush = intel_i915_chipset_flush,
......@@ -1999,6 +2011,7 @@ static const struct agp_bridge_driver intel_7505_driver = {
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
......@@ -2024,6 +2037,7 @@ static const struct agp_bridge_driver intel_g33_driver = {
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = intel_i830_type_to_mask_type,
.chipset_flush = intel_i915_chipset_flush,
......
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