mirror of https://gitee.com/openkylin/linux.git
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>
This commit is contained in:
Shaohua Li
Ingo Molnar
parent
d75586ad01
commit
37acee10f4
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@ -116,6 +116,7 @@ struct agp_bridge_driver {
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struct agp_memory *(*alloc_by_type) (size_t, int);
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void (*free_by_type)(struct agp_memory *);
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void *(*agp_alloc_page)(struct agp_bridge_data *);
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int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
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void (*agp_destroy_page)(void *, int flags);
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int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
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void (*chipset_flush)(struct agp_bridge_data *);
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@ -274,6 +275,8 @@ int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
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struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
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void agp_generic_free_by_type(struct agp_memory *curr);
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void *agp_generic_alloc_page(struct agp_bridge_data *bridge);
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int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
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struct agp_memory *memory, size_t page_count);
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void agp_generic_destroy_page(void *addr, int flags);
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void agp_free_key(int key);
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int agp_num_entries(void);
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@ -264,6 +264,15 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge,
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if (new == NULL)
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return NULL;
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if (bridge->driver->agp_alloc_pages) {
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if (bridge->driver->agp_alloc_pages(bridge, new, page_count)) {
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agp_free_memory(new);
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return NULL;
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}
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new->bridge = bridge;
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return new;
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}
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for (i = 0; i < page_count; i++) {
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void *addr = bridge->driver->agp_alloc_page(bridge);
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@ -1178,6 +1187,39 @@ EXPORT_SYMBOL(agp_generic_alloc_user);
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* against a maximum value.
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*/
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int agp_generic_alloc_pages(struct agp_bridge_data *bridge, struct agp_memory *mem, size_t num_pages)
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{
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struct page * page;
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int i, ret = -ENOMEM;
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for (i = 0; i < num_pages; i++) {
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page = alloc_page(GFP_KERNEL | GFP_DMA32);
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/* agp_free_memory() needs gart address */
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if (page == NULL)
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goto out;
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#ifndef CONFIG_X86
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map_page_into_agp(page);
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#endif
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get_page(page);
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atomic_inc(&agp_bridge->current_memory_agp);
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/* set_memory_array_uc() needs virtual address */
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mem->memory[i] = (unsigned long)page_address(page);
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mem->page_count++;
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}
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#ifdef CONFIG_X86
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set_memory_array_uc(mem->memory, num_pages);
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#endif
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ret = 0;
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out:
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for (i = 0; i < mem->page_count; i++)
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mem->memory[i] = virt_to_gart((void *)mem->memory[i]);
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return ret;
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}
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EXPORT_SYMBOL(agp_generic_alloc_pages);
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void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
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{
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struct page * page;
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@ -1703,6 +1703,7 @@ static const struct agp_bridge_driver intel_generic_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1728,6 +1729,7 @@ static const struct agp_bridge_driver intel_810_driver = {
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.alloc_by_type = intel_i810_alloc_by_type,
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.free_by_type = intel_i810_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1752,6 +1754,7 @@ static const struct agp_bridge_driver intel_815_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1777,6 +1780,7 @@ static const struct agp_bridge_driver intel_830_driver = {
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.alloc_by_type = intel_i830_alloc_by_type,
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.free_by_type = intel_i810_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = intel_i830_type_to_mask_type,
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.chipset_flush = intel_i830_chipset_flush,
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@ -1802,6 +1806,7 @@ static const struct agp_bridge_driver intel_820_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1826,6 +1831,7 @@ static const struct agp_bridge_driver intel_830mp_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1850,6 +1856,7 @@ static const struct agp_bridge_driver intel_840_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1874,6 +1881,7 @@ static const struct agp_bridge_driver intel_845_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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.chipset_flush = intel_i830_chipset_flush,
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@ -1899,6 +1907,7 @@ static const struct agp_bridge_driver intel_850_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1923,6 +1932,7 @@ static const struct agp_bridge_driver intel_860_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -1948,6 +1958,7 @@ static const struct agp_bridge_driver intel_915_driver = {
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.alloc_by_type = intel_i830_alloc_by_type,
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.free_by_type = intel_i810_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = intel_i830_type_to_mask_type,
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.chipset_flush = intel_i915_chipset_flush,
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@ -1974,6 +1985,7 @@ static const struct agp_bridge_driver intel_i965_driver = {
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.alloc_by_type = intel_i830_alloc_by_type,
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.free_by_type = intel_i810_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = intel_i830_type_to_mask_type,
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.chipset_flush = intel_i915_chipset_flush,
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@ -1999,6 +2011,7 @@ static const struct agp_bridge_driver intel_7505_driver = {
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.alloc_by_type = agp_generic_alloc_by_type,
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.free_by_type = agp_generic_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = agp_generic_type_to_mask_type,
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};
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@ -2024,6 +2037,7 @@ static const struct agp_bridge_driver intel_g33_driver = {
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.alloc_by_type = intel_i830_alloc_by_type,
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.free_by_type = intel_i810_free_by_type,
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.agp_alloc_page = agp_generic_alloc_page,
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.agp_alloc_pages = agp_generic_alloc_pages,
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.agp_destroy_page = agp_generic_destroy_page,
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.agp_type_to_mask_type = intel_i830_type_to_mask_type,
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.chipset_flush = intel_i915_chipset_flush,
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