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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
parentd75586ad01e6c5a30e7337fb87d61e03556a1ecb (diff)
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>
-rw-r--r--drivers/char/agp/agp.h3
-rw-r--r--drivers/char/agp/generic.c42
-rw-r--r--drivers/char/agp/intel-agp.c14
3 files changed, 59 insertions, 0 deletions
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index 81e14bea54b..55d2c9d1417 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -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);
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index eaa1a355bb3..13a5577ee43 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;
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index df702642ab8..2cff0976a66 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -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,