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Kirill Smelkov
linux
Commits
1b13cadf
Commit
1b13cadf
authored
Feb 22, 2005
by
Dave Jones
Browse files
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Plain Diff
[AGPGART] Introduce routine to check current operating mode of agp bridge.
Signed-off-by:
Dave Jones
<
davej@redhat.com
>
parent
b108855a
Changes
1
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1 changed file
with
17 additions
and
11 deletions
+17
-11
drivers/char/agp/generic.c
drivers/char/agp/generic.c
+17
-11
No files found.
drivers/char/agp/generic.c
View file @
1b13cadf
...
@@ -589,6 +589,20 @@ static void agp_v3_parse_one(u32 *requested_mode, u32 *bridge_agpstat, u32 *vga_
...
@@ -589,6 +589,20 @@ static void agp_v3_parse_one(u32 *requested_mode, u32 *bridge_agpstat, u32 *vga_
}
}
}
}
static
int
check_bridge_mode
(
struct
pci_dev
*
dev
)
{
u32
agp3
;
u8
cap_ptr
;
cap_ptr
=
pci_find_capability
(
dev
,
PCI_CAP_ID_AGP
);
pci_read_config_dword
(
dev
,
cap_ptr
+
AGPSTAT
,
&
agp3
);
if
(
agp3
&
AGPSTAT_MODE_3_0
)
return
1
;
return
0
;
}
/**
/**
* agp_collect_device_status - determine correct agp_cmd from various agp_stat's
* agp_collect_device_status - determine correct agp_cmd from various agp_stat's
* @bridge: an agp_bridge_data struct allocated for the AGP host bridge.
* @bridge: an agp_bridge_data struct allocated for the AGP host bridge.
...
@@ -603,7 +617,6 @@ u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 requested_mode
...
@@ -603,7 +617,6 @@ u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 requested_mode
struct
pci_dev
*
device
=
NULL
;
struct
pci_dev
*
device
=
NULL
;
u8
cap_ptr
=
0
;
u8
cap_ptr
=
0
;
u32
vga_agpstat
;
u32
vga_agpstat
;
u32
agp3
;
while
(
!
cap_ptr
)
{
while
(
!
cap_ptr
)
{
device
=
pci_get_class
(
PCI_CLASS_DISPLAY_VGA
,
device
);
device
=
pci_get_class
(
PCI_CLASS_DISPLAY_VGA
,
device
);
...
@@ -636,12 +649,10 @@ u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 requested_mode
...
@@ -636,12 +649,10 @@ u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 requested_mode
bridge_agpstat
&=
~
AGPSTAT_FW
;
bridge_agpstat
&=
~
AGPSTAT_FW
;
/* Check to see if we are operating in 3.0 mode */
/* Check to see if we are operating in 3.0 mode */
pci_read_config_dword
(
agp_bridge
->
dev
,
cap_ptr
+
AGPSTAT
,
&
agp3
);
if
(
check_bridge_mode
(
agp_bridge
->
dev
))
if
(
agp3
&
AGPSTAT_MODE_3_0
)
{
agp_v3_parse_one
(
&
requested_mode
,
&
bridge_agpstat
,
&
vga_agpstat
);
agp_v3_parse_one
(
&
requested_mode
,
&
bridge_agpstat
,
&
vga_agpstat
);
}
else
{
else
agp_v2_parse_one
(
&
requested_mode
,
&
bridge_agpstat
,
&
vga_agpstat
);
agp_v2_parse_one
(
&
requested_mode
,
&
bridge_agpstat
,
&
vga_agpstat
);
}
pci_dev_put
(
device
);
pci_dev_put
(
device
);
return
bridge_agpstat
;
return
bridge_agpstat
;
...
@@ -689,7 +700,6 @@ EXPORT_SYMBOL(get_agp_version);
...
@@ -689,7 +700,6 @@ EXPORT_SYMBOL(get_agp_version);
void
agp_generic_enable
(
u32
requested_mode
)
void
agp_generic_enable
(
u32
requested_mode
)
{
{
u32
bridge_agpstat
,
temp
;
u32
bridge_agpstat
,
temp
;
u32
agp3
;
get_agp_version
(
agp_bridge
);
get_agp_version
(
agp_bridge
);
...
@@ -710,11 +720,7 @@ void agp_generic_enable(u32 requested_mode)
...
@@ -710,11 +720,7 @@ void agp_generic_enable(u32 requested_mode)
/* Do AGP version specific frobbing. */
/* Do AGP version specific frobbing. */
if
(
agp_bridge
->
major_version
>=
3
)
{
if
(
agp_bridge
->
major_version
>=
3
)
{
pci_read_config_dword
(
agp_bridge
->
dev
,
if
(
check_bridge_mode
(
agp_bridge
->
dev
))
{
agp_bridge
->
capndx
+
AGPSTAT
,
&
agp3
);
/* Check to see if we are operating in 3.0 mode */
if
(
agp3
&
AGPSTAT_MODE_3_0
)
{
/* If we have 3.5, we can do the isoch stuff. */
/* If we have 3.5, we can do the isoch stuff. */
if
(
agp_bridge
->
minor_version
>=
5
)
if
(
agp_bridge
->
minor_version
>=
5
)
agp_3_5_enable
(
agp_bridge
);
agp_3_5_enable
(
agp_bridge
);
...
...
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