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Kirill Smelkov
linux
Commits
2ca394c5
Commit
2ca394c5
authored
Apr 15, 2003
by
David Mosberger
Browse files
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Plain Diff
ia64: Export hp_acpi_csr_space() for modules.
parent
e707bbea
Changes
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2 changed files
with
3 additions
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348 deletions
+3
-348
arch/ia64/hp/zx1/hpzx1_misc.c
arch/ia64/hp/zx1/hpzx1_misc.c
+0
-348
arch/ia64/kernel/acpi-ext.c
arch/ia64/kernel/acpi-ext.c
+3
-0
No files found.
arch/ia64/hp/zx1/hpzx1_misc.c
deleted
100644 → 0
View file @
e707bbea
/*
* Misc. support for HP zx1 chipset support
*
* Copyright (C) 2002-2003 Hewlett-Packard Co
* Alex Williamson <alex_williamson@hp.com>
* Bjorn Helgaas <bjorn_helgaas@hp.com>
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/efi.h>
#include <asm/dma.h>
#include <asm/iosapic.h>
extern
acpi_status
acpi_evaluate_integer
(
acpi_handle
,
acpi_string
,
struct
acpi_object_list
*
,
unsigned
long
*
);
#define PFX "hpzx1: "
static
int
hpzx1_devices
;
struct
fake_pci_dev
{
struct
fake_pci_dev
*
next
;
struct
pci_dev
*
pci_dev
;
unsigned
long
csr_base
;
unsigned
long
csr_size
;
unsigned
long
mapped_csrs
;
// ioremapped
int
sizing
;
// in middle of BAR sizing operation?
}
*
fake_pci_dev_list
;
static
struct
pci_ops
*
orig_pci_ops
;
struct
fake_pci_dev
*
lookup_fake_dev
(
struct
pci_bus
*
bus
,
unsigned
int
devfn
)
{
struct
fake_pci_dev
*
fake_dev
;
for
(
fake_dev
=
fake_pci_dev_list
;
fake_dev
;
fake_dev
=
fake_dev
->
next
)
if
(
fake_dev
->
pci_dev
->
bus
==
bus
&&
fake_dev
->
pci_dev
->
devfn
==
devfn
)
return
fake_dev
;
return
NULL
;
}
static
int
hp_cfg_read
(
struct
pci_bus
*
bus
,
unsigned
int
devfn
,
int
where
,
int
size
,
u32
*
value
)
{
struct
fake_pci_dev
*
fake_dev
=
lookup_fake_dev
(
bus
,
devfn
);
if
(
!
fake_dev
)
return
(
*
orig_pci_ops
->
read
)(
bus
,
devfn
,
where
,
size
,
value
);
if
(
where
==
PCI_BASE_ADDRESS_0
)
{
if
(
fake_dev
->
sizing
)
*
value
=
~
(
fake_dev
->
csr_size
-
1
);
else
*
value
=
((
fake_dev
->
csr_base
&
PCI_BASE_ADDRESS_MEM_MASK
)
|
PCI_BASE_ADDRESS_SPACE_MEMORY
);
fake_dev
->
sizing
=
0
;
return
PCIBIOS_SUCCESSFUL
;
}
switch
(
size
)
{
case
1
:
*
value
=
readb
(
fake_dev
->
mapped_csrs
+
where
);
break
;
case
2
:
*
value
=
readw
(
fake_dev
->
mapped_csrs
+
where
);
break
;
case
4
:
*
value
=
readl
(
fake_dev
->
mapped_csrs
+
where
);
break
;
default:
printk
(
KERN_WARNING
"hp_cfg_read: bad size = %d bytes"
,
size
);
break
;
}
if
(
where
==
PCI_COMMAND
)
*
value
|=
PCI_COMMAND_MEMORY
;
/* SBA omits this */
return
PCIBIOS_SUCCESSFUL
;
}
static
int
hp_cfg_write
(
struct
pci_bus
*
bus
,
unsigned
int
devfn
,
int
where
,
int
size
,
u32
value
)
{
struct
fake_pci_dev
*
fake_dev
=
lookup_fake_dev
(
bus
,
devfn
);
if
(
!
fake_dev
)
return
(
*
orig_pci_ops
->
write
)(
bus
,
devfn
,
where
,
size
,
value
);
if
(
where
==
PCI_BASE_ADDRESS_0
)
{
if
(
value
==
((
1UL
<<
8
*
size
)
-
1
))
fake_dev
->
sizing
=
1
;
return
PCIBIOS_SUCCESSFUL
;
}
switch
(
size
)
{
case
1
:
writeb
(
value
,
fake_dev
->
mapped_csrs
+
where
);
break
;
case
2
:
writew
(
value
,
fake_dev
->
mapped_csrs
+
where
);
break
;
case
4
:
writel
(
value
,
fake_dev
->
mapped_csrs
+
where
);
break
;
default:
printk
(
KERN_WARNING
"hp_cfg_write: bad size = %d bytes"
,
size
);
break
;
}
return
PCIBIOS_SUCCESSFUL
;
}
static
struct
pci_ops
hp_pci_conf
=
{
.
read
=
hp_cfg_read
,
.
write
=
hp_cfg_write
};
static
void
hpzx1_fake_pci_dev
(
char
*
name
,
unsigned
int
busnum
,
unsigned
long
addr
,
unsigned
int
size
)
{
struct
fake_pci_dev
*
fake
;
int
slot
,
ret
;
struct
pci_dev
*
dev
;
struct
pci_bus
*
b
,
*
bus
=
NULL
;
u8
hdr
;
fake
=
kmalloc
(
sizeof
(
*
fake
),
GFP_KERNEL
);
if
(
!
fake
)
{
printk
(
KERN_ERR
PFX
"No memory for %s (0x%p) sysdata
\n
"
,
name
,
(
void
*
)
addr
);
return
;
}
memset
(
fake
,
0
,
sizeof
(
*
fake
));
fake
->
csr_base
=
addr
;
fake
->
csr_size
=
size
;
fake
->
mapped_csrs
=
(
unsigned
long
)
ioremap
(
addr
,
size
);
fake
->
sizing
=
0
;
pci_for_each_bus
(
b
)
if
(
busnum
==
b
->
number
)
{
bus
=
b
;
break
;
}
if
(
!
bus
)
{
printk
(
KERN_ERR
PFX
"No host bus 0x%02x for %s (0x%p)
\n
"
,
busnum
,
name
,
(
void
*
)
addr
);
kfree
(
fake
);
return
;
}
for
(
slot
=
0x1e
;
slot
;
slot
--
)
if
(
!
pci_find_slot
(
busnum
,
PCI_DEVFN
(
slot
,
0
)))
break
;
if
(
slot
<
0
)
{
printk
(
KERN_ERR
PFX
"No space for %s (0x%p) on bus 0x%02x
\n
"
,
name
,
(
void
*
)
addr
,
busnum
);
kfree
(
fake
);
return
;
}
dev
=
kmalloc
(
sizeof
(
*
dev
),
GFP_KERNEL
);
if
(
!
dev
)
{
printk
(
KERN_ERR
PFX
"No memory for %s (0x%p)
\n
"
,
name
,
(
void
*
)
addr
);
kfree
(
fake
);
return
;
}
bus
->
ops
=
&
hp_pci_conf
;
// replace pci ops for this bus
fake
->
pci_dev
=
dev
;
fake
->
next
=
fake_pci_dev_list
;
fake_pci_dev_list
=
fake
;
memset
(
dev
,
0
,
sizeof
(
*
dev
));
dev
->
bus
=
bus
;
dev
->
sysdata
=
fake
;
dev
->
dev
.
parent
=
bus
->
dev
;
dev
->
dev
.
bus
=
&
pci_bus_type
;
dev
->
devfn
=
PCI_DEVFN
(
slot
,
0
);
pci_read_config_word
(
dev
,
PCI_VENDOR_ID
,
&
dev
->
vendor
);
pci_read_config_word
(
dev
,
PCI_DEVICE_ID
,
&
dev
->
device
);
pci_read_config_byte
(
dev
,
PCI_HEADER_TYPE
,
&
hdr
);
dev
->
hdr_type
=
hdr
&
0x7f
;
pci_setup_device
(
dev
);
// pci_insert_device() without running /sbin/hotplug
list_add_tail
(
&
dev
->
bus_list
,
&
bus
->
devices
);
list_add_tail
(
&
dev
->
global_list
,
&
pci_devices
);
strcpy
(
dev
->
dev
.
bus_id
,
dev
->
slot_name
);
ret
=
device_register
(
&
dev
->
dev
);
if
(
ret
<
0
)
printk
(
KERN_INFO
PFX
"fake device registration failed (%d)
\n
"
,
ret
);
printk
(
KERN_INFO
PFX
"%s at 0x%lx; pci dev %s
\n
"
,
name
,
addr
,
dev
->
slot_name
);
hpzx1_devices
++
;
}
struct
acpi_hp_vendor_long
{
u8
guid_id
;
u8
guid
[
16
];
u8
csr_base
[
8
];
u8
csr_length
[
8
];
};
#define HP_CCSR_LENGTH 0x21
#define HP_CCSR_TYPE 0x2
#define HP_CCSR_GUID EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, \
0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad)
extern
acpi_status
acpi_get_crs
(
acpi_handle
,
struct
acpi_buffer
*
);
extern
struct
acpi_resource
*
acpi_get_crs_next
(
struct
acpi_buffer
*
,
int
*
);
extern
union
acpi_resource_data
*
acpi_get_crs_type
(
struct
acpi_buffer
*
,
int
*
,
int
);
extern
void
acpi_dispose_crs
(
struct
acpi_buffer
*
);
static
acpi_status
hp_csr_space
(
acpi_handle
obj
,
u64
*
csr_base
,
u64
*
csr_length
)
{
int
i
,
offset
=
0
;
acpi_status
status
;
struct
acpi_buffer
buf
;
struct
acpi_resource_vendor
*
res
;
struct
acpi_hp_vendor_long
*
hp_res
;
efi_guid_t
vendor_guid
;
*
csr_base
=
0
;
*
csr_length
=
0
;
status
=
acpi_get_crs
(
obj
,
&
buf
);
if
(
ACPI_FAILURE
(
status
))
{
printk
(
KERN_ERR
PFX
"Unable to get _CRS data on object
\n
"
);
return
status
;
}
res
=
(
struct
acpi_resource_vendor
*
)
acpi_get_crs_type
(
&
buf
,
&
offset
,
ACPI_RSTYPE_VENDOR
);
if
(
!
res
)
{
printk
(
KERN_ERR
PFX
"Failed to find config space for device
\n
"
);
acpi_dispose_crs
(
&
buf
);
return
AE_NOT_FOUND
;
}
hp_res
=
(
struct
acpi_hp_vendor_long
*
)(
res
->
reserved
);
if
(
res
->
length
!=
HP_CCSR_LENGTH
||
hp_res
->
guid_id
!=
HP_CCSR_TYPE
)
{
printk
(
KERN_ERR
PFX
"Unknown Vendor data
\n
"
);
acpi_dispose_crs
(
&
buf
);
return
AE_TYPE
;
/* Revisit error? */
}
memcpy
(
&
vendor_guid
,
hp_res
->
guid
,
sizeof
(
efi_guid_t
));
if
(
efi_guidcmp
(
vendor_guid
,
HP_CCSR_GUID
)
!=
0
)
{
printk
(
KERN_ERR
PFX
"Vendor GUID does not match
\n
"
);
acpi_dispose_crs
(
&
buf
);
return
AE_TYPE
;
/* Revisit error? */
}
for
(
i
=
0
;
i
<
8
;
i
++
)
{
*
csr_base
|=
((
u64
)(
hp_res
->
csr_base
[
i
])
<<
(
i
*
8
));
*
csr_length
|=
((
u64
)(
hp_res
->
csr_length
[
i
])
<<
(
i
*
8
));
}
acpi_dispose_crs
(
&
buf
);
return
AE_OK
;
}
static
acpi_status
hpzx1_sba_probe
(
acpi_handle
obj
,
u32
depth
,
void
*
context
,
void
**
ret
)
{
u64
csr_base
=
0
,
csr_length
=
0
;
acpi_status
status
;
char
*
name
=
context
;
char
fullname
[
16
];
status
=
hp_csr_space
(
obj
,
&
csr_base
,
&
csr_length
);
if
(
ACPI_FAILURE
(
status
))
return
status
;
/*
* Only SBA shows up in ACPI namespace, so its CSR space
* includes both SBA and IOC. Make SBA and IOC show up
* separately in PCI space.
*/
sprintf
(
fullname
,
"%s SBA"
,
name
);
hpzx1_fake_pci_dev
(
fullname
,
0
,
csr_base
,
0x1000
);
sprintf
(
fullname
,
"%s IOC"
,
name
);
hpzx1_fake_pci_dev
(
fullname
,
0
,
csr_base
+
0x1000
,
0x1000
);
return
AE_OK
;
}
static
acpi_status
hpzx1_lba_probe
(
acpi_handle
obj
,
u32
depth
,
void
*
context
,
void
**
ret
)
{
u64
csr_base
=
0
,
csr_length
=
0
;
acpi_status
status
;
acpi_native_uint
busnum
;
char
*
name
=
context
;
char
fullname
[
32
];
status
=
hp_csr_space
(
obj
,
&
csr_base
,
&
csr_length
);
if
(
ACPI_FAILURE
(
status
))
return
status
;
status
=
acpi_evaluate_integer
(
obj
,
METHOD_NAME__BBN
,
NULL
,
&
busnum
);
if
(
ACPI_FAILURE
(
status
))
{
printk
(
KERN_WARNING
PFX
"evaluate _BBN fail=0x%x
\n
"
,
status
);
busnum
=
0
;
// no _BBN; stick it on bus 0
}
sprintf
(
fullname
,
"%s _BBN 0x%02x"
,
name
,
(
unsigned
int
)
busnum
);
hpzx1_fake_pci_dev
(
fullname
,
busnum
,
csr_base
,
csr_length
);
return
AE_OK
;
}
static
void
hpzx1_acpi_dev_init
(
void
)
{
extern
struct
pci_ops
*
pci_root_ops
;
orig_pci_ops
=
pci_root_ops
;
/*
* Make fake PCI devices for the following hardware in the
* ACPI namespace. This makes it more convenient for drivers
* because they can claim these devices based on PCI
* information, rather than needing to know about ACPI. The
* 64-bit "HPA" space for this hardware is available as BAR
* 0/1.
*
* HWP0001: Single IOC SBA w/o IOC in namespace
* HWP0002: LBA device
* HWP0003: AGP LBA device
*/
acpi_get_devices
(
"HWP0001"
,
hpzx1_sba_probe
,
"HWP0001"
,
NULL
);
acpi_get_devices
(
"HWP0002"
,
hpzx1_lba_probe
,
"HWP0002 PCI LBA"
,
NULL
);
acpi_get_devices
(
"HWP0003"
,
hpzx1_lba_probe
,
"HWP0003 AGP LBA"
,
NULL
);
}
extern
void
sba_init
(
void
);
static
int
hpzx1_init
(
void
)
{
/* zx1 has a hardware I/O TLB which lets us DMA from any device to any address */
MAX_DMA_ADDRESS
=
~
0UL
;
hpzx1_acpi_dev_init
();
sba_init
();
return
0
;
}
subsys_initcall
(
hpzx1_init
);
arch/ia64/kernel/acpi-ext.c
View file @
2ca394c5
...
...
@@ -9,6 +9,7 @@
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/efi.h>
...
...
@@ -69,3 +70,5 @@ hp_acpi_csr_space (acpi_handle obj, u64 *csr_base, u64 *csr_length)
acpi_dispose_crs
(
&
buf
);
return
AE_OK
;
}
EXPORT_SYMBOL
(
hp_acpi_csr_space
);
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