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nexedi
linux
Commits
ee0bb666
Commit
ee0bb666
authored
Oct 05, 2003
by
Russell King
Browse files
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Plain Diff
Merge flint.arm.linux.org.uk:/usr/src/bk/linux-2.6
into flint.arm.linux.org.uk:/usr/src/bk/linux-2.6-serial
parents
cedc5632
67db702a
Changes
1
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Showing
1 changed file
with
71 additions
and
30 deletions
+71
-30
drivers/serial/8250_acpi.c
drivers/serial/8250_acpi.c
+71
-30
No files found.
drivers/serial/8250_acpi.c
View file @
ee0bb666
...
@@ -18,18 +18,33 @@
...
@@ -18,18 +18,33 @@
#include <asm/io.h>
#include <asm/io.h>
#include <asm/serial.h>
#include <asm/serial.h>
static
void
acpi_serial_address
(
struct
serial_struct
*
req
,
static
acpi_status
acpi_serial_mmio
(
struct
serial_struct
*
req
,
struct
acpi_resource_address32
*
addr32
)
struct
acpi_resource_address64
*
addr
)
{
{
unsigned
long
size
;
unsigned
long
size
;
size
=
addr
32
->
max_address_range
-
addr32
->
min_address_range
+
1
;
size
=
addr
->
max_address_range
-
addr
->
min_address_range
+
1
;
req
->
iomap_base
=
addr
32
->
min_address_range
;
req
->
iomap_base
=
addr
->
min_address_range
;
req
->
iomem_base
=
ioremap
(
req
->
iomap_base
,
size
);
req
->
iomem_base
=
ioremap
(
req
->
iomap_base
,
size
);
if
(
!
req
->
iomem_base
)
{
printk
(
KERN_ERR
"%s: couldn't ioremap 0x%lx-0x%lx
\n
"
,
__FUNCTION__
,
addr
->
min_address_range
,
addr
->
max_address_range
);
return
AE_ERROR
;
}
req
->
io_type
=
SERIAL_IO_MEM
;
req
->
io_type
=
SERIAL_IO_MEM
;
return
AE_OK
;
}
}
static
void
acpi_serial_irq
(
struct
serial_struct
*
req
,
static
acpi_status
acpi_serial_port
(
struct
serial_struct
*
req
,
struct
acpi_resource_io
*
io
)
{
req
->
port
=
io
->
min_base_address
;
req
->
io_type
=
SERIAL_IO_PORT
;
return
AE_OK
;
}
static
acpi_status
acpi_serial_ext_irq
(
struct
serial_struct
*
req
,
struct
acpi_resource_ext_irq
*
ext_irq
)
struct
acpi_resource_ext_irq
*
ext_irq
)
{
{
if
(
ext_irq
->
number_of_interrupts
>
0
)
{
if
(
ext_irq
->
number_of_interrupts
>
0
)
{
...
@@ -40,45 +55,71 @@ static void acpi_serial_irq(struct serial_struct *req,
...
@@ -40,45 +55,71 @@ static void acpi_serial_irq(struct serial_struct *req,
req
->
irq
=
ext_irq
->
interrupts
[
0
];
req
->
irq
=
ext_irq
->
interrupts
[
0
];
#endif
#endif
}
}
return
AE_OK
;
}
static
acpi_status
acpi_serial_irq
(
struct
serial_struct
*
req
,
struct
acpi_resource_irq
*
irq
)
{
if
(
irq
->
number_of_interrupts
>
0
)
{
#ifdef CONFIG_IA64
req
->
irq
=
acpi_register_irq
(
irq
->
interrupts
[
0
],
irq
->
active_high_low
,
irq
->
edge_level
);
#else
req
->
irq
=
irq
->
interrupts
[
0
];
#endif
}
return
AE_OK
;
}
static
acpi_status
acpi_serial_resource
(
struct
acpi_resource
*
res
,
void
*
data
)
{
struct
serial_struct
*
serial_req
=
(
struct
serial_struct
*
)
data
;
struct
acpi_resource_address64
addr
;
acpi_status
status
;
status
=
acpi_resource_to_address64
(
res
,
&
addr
);
if
(
ACPI_SUCCESS
(
status
))
return
acpi_serial_mmio
(
serial_req
,
&
addr
);
else
if
(
res
->
id
==
ACPI_RSTYPE_IO
)
return
acpi_serial_port
(
serial_req
,
&
res
->
data
.
io
);
else
if
(
res
->
id
==
ACPI_RSTYPE_EXT_IRQ
)
return
acpi_serial_ext_irq
(
serial_req
,
&
res
->
data
.
extended_irq
);
else
if
(
res
->
id
==
ACPI_RSTYPE_IRQ
)
return
acpi_serial_irq
(
serial_req
,
&
res
->
data
.
irq
);
return
AE_OK
;
}
}
static
int
acpi_serial_add
(
struct
acpi_device
*
device
)
static
int
acpi_serial_add
(
struct
acpi_device
*
device
)
{
{
acpi_status
result
;
acpi_status
status
;
struct
acpi_buffer
buffer
=
{
ACPI_ALLOCATE_BUFFER
,
NULL
};
struct
serial_struct
serial_req
;
struct
serial_struct
serial_req
;
int
line
,
offset
=
0
;
int
line
;
memset
(
&
serial_req
,
0
,
sizeof
(
serial_req
));
memset
(
&
serial_req
,
0
,
sizeof
(
serial_req
));
result
=
acpi_get_current_resources
(
device
->
handle
,
&
buffer
);
if
(
ACPI_FAILURE
(
result
))
{
result
=
-
ENODEV
;
goto
out
;
}
while
(
offset
<=
buffer
.
length
)
{
status
=
acpi_walk_resources
(
device
->
handle
,
METHOD_NAME__CRS
,
struct
acpi_resource
*
res
=
buffer
.
pointer
+
offset
;
acpi_serial_resource
,
&
serial_req
);
if
(
res
->
length
==
0
)
if
(
ACPI_FAILURE
(
status
))
break
;
return
-
ENODEV
;
offset
+=
res
->
length
;
if
(
res
->
id
==
ACPI_RSTYPE_ADDRESS32
)
{
if
(
!
serial_req
.
iomem_base
&&
!
serial_req
.
port
)
{
acpi_serial_address
(
&
serial_req
,
&
res
->
data
.
address32
);
printk
(
KERN_ERR
"%s: no iomem or port address in %s _CRS
\n
"
,
}
else
if
(
res
->
id
==
ACPI_RSTYPE_EXT_IRQ
)
{
__FUNCTION__
,
device
->
pnp
.
bus_id
);
acpi_serial_irq
(
&
serial_req
,
&
res
->
data
.
extended_irq
);
return
-
ENODEV
;
}
}
}
serial_req
.
baud_base
=
BASE_BAUD
;
serial_req
.
baud_base
=
BASE_BAUD
;
serial_req
.
flags
=
ASYNC_SKIP_TEST
|
ASYNC_BOOT_AUTOCONF
|
ASYNC_AUTO_IRQ
;
serial_req
.
flags
=
ASYNC_SKIP_TEST
|
ASYNC_BOOT_AUTOCONF
|
ASYNC_AUTO_IRQ
;
result
=
0
;
line
=
register_serial
(
&
serial_req
);
line
=
register_serial
(
&
serial_req
);
if
(
line
<
0
)
if
(
line
<
0
)
{
result
=
-
ENODEV
;
printk
(
KERN_WARNING
"Couldn't register serial port %s: %d"
,
device
->
pnp
.
bus_id
,
line
);
return
-
ENODEV
;
}
out:
return
0
;
acpi_os_free
(
buffer
.
pointer
);
return
result
;
}
}
static
int
acpi_serial_remove
(
struct
acpi_device
*
device
,
int
type
)
static
int
acpi_serial_remove
(
struct
acpi_device
*
device
,
int
type
)
...
...
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