| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 21 Aug 2008 10:46:11 +0800
From: Shaohua Li <shaohua.li@...el.com>
To: lkml <linux-kernel@...r.kernel.org>
Cc: Dave Airlie <airlied@...il.com>, Ingo Molnar <mingo@...e.hu>,
Arjan van de Ven <arjan@...radead.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [2/4]add agp_generic_alloc_pages()
Add agp_generic_alloc_pages(), it uses new pageattr array interface API.
Signed-off-by: Dave Airlie <airlied@...il.com>
Signed-off-by: Shaohua Li <shaohua.li@...el.com>
---
drivers/char/agp/agp.h | 3 +++
drivers/char/agp/generic.c | 42 ++++++++++++++++++++++++++++++++++++++++++
drivers/char/agp/intel-agp.c | 14 ++++++++++++++
3 files changed, 59 insertions(+)
Index: linux/drivers/char/agp/agp.h
===================================================================
--- linux.orig/drivers/char/agp/agp.h 2008-08-20 17:21:28.000000000 +0800
+++ linux/drivers/char/agp/agp.h 2008-08-21 10:07:39.000000000 +0800
@@ -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 *);
@@ -277,6 +278,8 @@ int agp_generic_remove_memory(struct agp
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);
Index: linux/drivers/char/agp/generic.c
===================================================================
--- linux.orig/drivers/char/agp/generic.c 2008-08-20 17:21:28.000000000 +0800
+++ linux/drivers/char/agp/generic.c 2008-08-21 10:07:39.000000000 +0800
@@ -264,6 +264,15 @@ struct agp_memory *agp_allocate_memory(s
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);
@@ -1203,6 +1212,39 @@ 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;
Index: linux/drivers/char/agp/intel-agp.c
===================================================================
--- linux.orig/drivers/char/agp/intel-agp.c 2008-08-20 17:21:28.000000000 +0800
+++ linux/drivers/char/agp/intel-agp.c 2008-08-21 10:07:39.000000000 +0800
@@ -1711,6 +1711,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1736,6 +1737,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1760,6 +1762,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1785,6 +1788,7 @@ static const struct agp_bridge_driver in
.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,
@@ -1810,6 +1814,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1834,6 +1839,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1858,6 +1864,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1882,6 +1889,7 @@ static const struct agp_bridge_driver in
.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,
@@ -1907,6 +1915,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1931,6 +1940,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -1956,6 +1966,7 @@ static const struct agp_bridge_driver in
.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,
@@ -1982,6 +1993,7 @@ static const struct agp_bridge_driver in
.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,
@@ -2007,6 +2019,7 @@ static const struct agp_bridge_driver in
.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,
};
@@ -2032,6 +2045,7 @@ static const struct agp_bridge_driver in
.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,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists