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authorDave Airlie <airlied@linux.ie>2007-10-29 01:14:03 -0400
committerDave Airlie <airlied@redhat.com>2008-02-04 23:33:32 -0500
commita13af4b4d842da6d7065b8c73fa8f0ac58fea1b6 (patch)
tree3269002c62ee1f10728cfa5a9782225329166d6b /drivers/char/agp
parent9ef9dc69d4167276c04590d67ee55de8380bc1ad (diff)
agp: add chipset flushing support to AGP interface
This bumps the AGP interface to 0.103. Certain Intel chipsets contains a global write buffer, and this can require flushing from the drm or X.org to make sure all data has hit RAM before initiating a GPU transfer, due to a lack of coherency with the integrated graphics device and this buffer. This just adds generic support to the AGP interfaces, a follow-on patch will add support to the Intel driver to use this interface. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/char/agp')
-rw-r--r--drivers/char/agp/agp.h3
-rw-r--r--drivers/char/agp/backend.c2
-rw-r--r--drivers/char/agp/compat_ioctl.c4
-rw-r--r--drivers/char/agp/compat_ioctl.h2
-rw-r--r--drivers/char/agp/frontend.c11
-rw-r--r--drivers/char/agp/generic.c7
6 files changed, 27 insertions, 2 deletions
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index b83824c41329..9ec9374ccc42 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -117,7 +117,8 @@ struct agp_bridge_driver {
117 void (*free_by_type)(struct agp_memory *); 117 void (*free_by_type)(struct agp_memory *);
118 void *(*agp_alloc_page)(struct agp_bridge_data *); 118 void *(*agp_alloc_page)(struct agp_bridge_data *);
119 void (*agp_destroy_page)(void *, int flags); 119 void (*agp_destroy_page)(void *, int flags);
120 int (*agp_type_to_mask_type) (struct agp_bridge_data *, int); 120 int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
121 void (*chipset_flush)(struct agp_bridge_data *);
121}; 122};
122 123
123struct agp_bridge_data { 124struct agp_bridge_data {
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index 2720882e66fe..b1bdd015165c 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -43,7 +43,7 @@
43 * fix some real stupidity. It's only by chance we can bump 43 * fix some real stupidity. It's only by chance we can bump
44 * past 0.99 at all due to some boolean logic error. */ 44 * past 0.99 at all due to some boolean logic error. */
45#define AGPGART_VERSION_MAJOR 0 45#define AGPGART_VERSION_MAJOR 0
46#define AGPGART_VERSION_MINOR 102 46#define AGPGART_VERSION_MINOR 103
47static const struct agp_version agp_current_version = 47static const struct agp_version agp_current_version =
48{ 48{
49 .major = AGPGART_VERSION_MAJOR, 49 .major = AGPGART_VERSION_MAJOR,
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
index ecd4248861b9..39275794fe63 100644
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -273,6 +273,10 @@ long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
273 case AGPIOC_UNBIND32: 273 case AGPIOC_UNBIND32:
274 ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg); 274 ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
275 break; 275 break;
276
277 case AGPIOC_CHIPSET_FLUSH32:
278 ret_val = agpioc_chipset_flush_wrap(curr_priv);
279 break;
276 } 280 }
277 281
278ioctl_out: 282ioctl_out:
diff --git a/drivers/char/agp/compat_ioctl.h b/drivers/char/agp/compat_ioctl.h
index 71939d637236..0c9678ac0371 100644
--- a/drivers/char/agp/compat_ioctl.h
+++ b/drivers/char/agp/compat_ioctl.h
@@ -39,6 +39,7 @@
39#define AGPIOC_DEALLOCATE32 _IOW (AGPIOC_BASE, 7, compat_int_t) 39#define AGPIOC_DEALLOCATE32 _IOW (AGPIOC_BASE, 7, compat_int_t)
40#define AGPIOC_BIND32 _IOW (AGPIOC_BASE, 8, compat_uptr_t) 40#define AGPIOC_BIND32 _IOW (AGPIOC_BASE, 8, compat_uptr_t)
41#define AGPIOC_UNBIND32 _IOW (AGPIOC_BASE, 9, compat_uptr_t) 41#define AGPIOC_UNBIND32 _IOW (AGPIOC_BASE, 9, compat_uptr_t)
42#define AGPIOC_CHIPSET_FLUSH32 _IO (AGPIOC_BASE, 10)
42 43
43struct agp_info32 { 44struct agp_info32 {
44 struct agp_version version; /* version of the driver */ 45 struct agp_version version; /* version of the driver */
@@ -101,5 +102,6 @@ void agp_free_memory_wrap(struct agp_memory *memory);
101struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type); 102struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type);
102struct agp_memory *agp_find_mem_by_key(int key); 103struct agp_memory *agp_find_mem_by_key(int key);
103struct agp_client *agp_find_client_by_pid(pid_t id); 104struct agp_client *agp_find_client_by_pid(pid_t id);
105int agpioc_chipset_flush_wrap(struct agp_file_private *priv);
104 106
105#endif /* _AGP_COMPAT_H */ 107#endif /* _AGP_COMPAT_H */
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 7791e98de51c..9bd5a958954c 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -960,6 +960,13 @@ static int agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
960 return agp_unbind_memory(memory); 960 return agp_unbind_memory(memory);
961} 961}
962 962
963int agpioc_chipset_flush_wrap(struct agp_file_private *priv)
964{
965 DBG("");
966 agp_flush_chipset(agp_bridge);
967 return 0;
968}
969
963static int agp_ioctl(struct inode *inode, struct file *file, 970static int agp_ioctl(struct inode *inode, struct file *file,
964 unsigned int cmd, unsigned long arg) 971 unsigned int cmd, unsigned long arg)
965{ 972{
@@ -1033,6 +1040,10 @@ static int agp_ioctl(struct inode *inode, struct file *file,
1033 case AGPIOC_UNBIND: 1040 case AGPIOC_UNBIND:
1034 ret_val = agpioc_unbind_wrap(curr_priv, (void __user *) arg); 1041 ret_val = agpioc_unbind_wrap(curr_priv, (void __user *) arg);
1035 break; 1042 break;
1043
1044 case AGPIOC_CHIPSET_FLUSH:
1045 ret_val = agpioc_chipset_flush_wrap(curr_priv);
1046 break;
1036 } 1047 }
1037 1048
1038ioctl_out: 1049ioctl_out:
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 1a4674ce0c71..7484bc759c4c 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -80,6 +80,13 @@ static int agp_get_key(void)
80 return -1; 80 return -1;
81} 81}
82 82
83void agp_flush_chipset(struct agp_bridge_data *bridge)
84{
85 if (bridge->driver->chipset_flush)
86 bridge->driver->chipset_flush(bridge);
87}
88EXPORT_SYMBOL(agp_flush_chipset);
89
83/* 90/*
84 * Use kmalloc if possible for the page list. Otherwise fall back to 91 * Use kmalloc if possible for the page list. Otherwise fall back to
85 * vmalloc. This speeds things up and also saves memory for small AGP 92 * vmalloc. This speeds things up and also saves memory for small AGP