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体验新版 GitCode,发现更多精彩内容 >>
提交
3db691da
编写于
3月 06, 2008
作者:
F
Florian Fainelli
提交者:
Jeff Garzik
3月 10, 2008
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操作
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电子邮件补丁
差异文件
[libata] Add support for the RB500 PATA CompactFlash
Signed-off-by:
N
Jeff Garzik
<
jeff@garzik.org
>
上级
258cd846
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
324 addition
and
0 deletion
+324
-0
drivers/ata/Kconfig
drivers/ata/Kconfig
+9
-0
drivers/ata/Makefile
drivers/ata/Makefile
+1
-0
drivers/ata/pata_rb500_cf.c
drivers/ata/pata_rb500_cf.c
+314
-0
未找到文件。
drivers/ata/Kconfig
浏览文件 @
3db691da
...
...
@@ -538,6 +538,15 @@ config PATA_RADISYS
If unsure, say N.
config PATA_RB500
tristate "RouterBoard 500 PATA CompactFlash support"
depends on MIKROTIK_RB500
help
This option enables support for the RouterBoard 500
PATA CompactFlash controller.
If unsure, say N.
config PATA_RZ1000
tristate "PC Tech RZ1000 PATA support"
depends on PCI
...
...
drivers/ata/Makefile
浏览文件 @
3db691da
...
...
@@ -55,6 +55,7 @@ obj-$(CONFIG_PATA_PDC2027X) += pata_pdc2027x.o
obj-$(CONFIG_PATA_PDC_OLD)
+=
pata_pdc202xx_old.o
obj-$(CONFIG_PATA_QDI)
+=
pata_qdi.o
obj-$(CONFIG_PATA_RADISYS)
+=
pata_radisys.o
obj-$(CONFIG_PATA_RB500)
+=
pata_rb500_cf.o
obj-$(CONFIG_PATA_RZ1000)
+=
pata_rz1000.o
obj-$(CONFIG_PATA_SC1200)
+=
pata_sc1200.o
obj-$(CONFIG_PATA_SERVERWORKS)
+=
pata_serverworks.o
...
...
drivers/ata/pata_rb500_cf.c
0 → 100644
浏览文件 @
3db691da
/*
* A low-level PATA driver to handle a Compact Flash connected on the
* Mikrotik's RouterBoard 532 board.
*
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
* Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
*
* This file was based on: drivers/ata/pata_ixp4xx_cf.c
* Copyright (C) 2006-07 Tower Technologies
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* Also was based on the driver for Linux 2.4.xx published by Mikrotik for
* their RouterBoard 1xx and 5xx series devices. The original Mikrotik code
* seems not to have a license.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/libata.h>
#include <scsi/scsi_host.h>
#include <asm/gpio.h>
#define DRV_NAME "pata-rb500-cf"
#define DRV_VERSION "0.1.0"
#define DRV_DESC "PATA driver for RouterBOARD 532 Compact Flash"
#define RB500_CF_MAXPORTS 1
#define RB500_CF_IO_DELAY 400
#define RB500_CF_REG_CMD 0x0800
#define RB500_CF_REG_CTRL 0x080E
#define RB500_CF_REG_DATA 0x0C00
struct
rb500_cf_info
{
void
__iomem
*
iobase
;
unsigned
int
gpio_line
;
int
frozen
;
unsigned
int
irq
;
};
/* ------------------------------------------------------------------------ */
static
inline
void
rb500_pata_finish_io
(
struct
ata_port
*
ap
)
{
struct
ata_host
*
ah
=
ap
->
host
;
struct
rb500_cf_info
*
info
=
ah
->
private_data
;
ata_altstatus
(
ap
);
ndelay
(
RB500_CF_IO_DELAY
);
set_irq_type
(
info
->
irq
,
IRQ_TYPE_LEVEL_HIGH
);
}
static
void
rb500_pata_exec_command
(
struct
ata_port
*
ap
,
const
struct
ata_taskfile
*
tf
)
{
writeb
(
tf
->
command
,
ap
->
ioaddr
.
command_addr
);
rb500_pata_finish_io
(
ap
);
}
static
void
rb500_pata_data_xfer
(
struct
ata_device
*
adev
,
unsigned
char
*
buf
,
unsigned
int
buflen
,
int
write_data
)
{
struct
ata_port
*
ap
=
adev
->
link
->
ap
;
void
__iomem
*
ioaddr
=
ap
->
ioaddr
.
data_addr
;
if
(
write_data
)
{
for
(;
buflen
>
0
;
buflen
--
,
buf
++
)
writeb
(
*
buf
,
ioaddr
);
}
else
{
for
(;
buflen
>
0
;
buflen
--
,
buf
++
)
*
buf
=
readb
(
ioaddr
);
}
rb500_pata_finish_io
(
adev
->
link
->
ap
);
}
static
void
rb500_pata_freeze
(
struct
ata_port
*
ap
)
{
struct
rb500_cf_info
*
info
=
ap
->
host
->
private_data
;
info
->
frozen
=
1
;
}
static
void
rb500_pata_thaw
(
struct
ata_port
*
ap
)
{
struct
rb500_cf_info
*
info
=
ap
->
host
->
private_data
;
info
->
frozen
=
0
;
}
static
irqreturn_t
rb500_pata_irq_handler
(
int
irq
,
void
*
dev_instance
)
{
struct
ata_host
*
ah
=
dev_instance
;
struct
rb500_cf_info
*
info
=
ah
->
private_data
;
if
(
gpio_get_value
(
info
->
gpio_line
))
{
set_irq_type
(
info
->
irq
,
IRQ_TYPE_LEVEL_LOW
);
if
(
!
info
->
frozen
)
ata_interrupt
(
info
->
irq
,
dev_instance
);
}
else
{
set_irq_type
(
info
->
irq
,
IRQ_TYPE_LEVEL_HIGH
);
}
return
IRQ_HANDLED
;
}
static
void
rb500_pata_irq_clear
(
struct
ata_port
*
ap
)
{
}
static
int
rb500_pata_port_start
(
struct
ata_port
*
ap
)
{
return
0
;
}
static
struct
ata_port_operations
rb500_pata_port_ops
=
{
.
tf_load
=
ata_tf_load
,
.
tf_read
=
ata_tf_read
,
.
exec_command
=
rb500_pata_exec_command
,
.
check_status
=
ata_check_status
,
.
dev_select
=
ata_std_dev_select
,
.
data_xfer
=
rb500_pata_data_xfer
,
.
qc_prep
=
ata_qc_prep
,
.
qc_issue
=
ata_qc_issue_prot
,
.
freeze
=
rb500_pata_freeze
,
.
thaw
=
rb500_pata_thaw
,
.
error_handler
=
ata_bmdma_error_handler
,
.
irq_handler
=
rb500_pata_irq_handler
,
.
irq_clear
=
rb500_pata_irq_clear
,
.
irq_on
=
ata_irq_on
,
.
port_start
=
rb500_pata_port_start
,
};
/* ------------------------------------------------------------------------ */
static
struct
scsi_host_template
rb500_pata_sht
=
{
.
module
=
THIS_MODULE
,
.
name
=
DRV_NAME
,
.
ioctl
=
ata_scsi_ioctl
,
.
queuecommand
=
ata_scsi_queuecmd
,
.
slave_configure
=
ata_scsi_slave_config
,
.
slave_destroy
=
ata_scsi_slave_destroy
,
.
bios_param
=
ata_std_bios_param
,
.
proc_name
=
DRV_NAME
,
.
can_queue
=
ATA_DEF_QUEUE
,
.
this_id
=
ATA_SHT_THIS_ID
,
.
sg_tablesize
=
LIBATA_MAX_PRD
,
.
dma_boundary
=
ATA_DMA_BOUNDARY
,
.
cmd_per_lun
=
ATA_SHT_CMD_PER_LUN
,
.
emulated
=
ATA_SHT_EMULATED
,
.
use_clustering
=
ATA_SHT_USE_CLUSTERING
,
};
/* ------------------------------------------------------------------------ */
static
void
rb500_pata_setup_ports
(
struct
ata_host
*
ah
)
{
struct
rb500_cf_info
*
info
=
ah
->
private_data
;
struct
ata_port
*
ap
;
ap
=
ah
->
ports
[
0
];
ap
->
ops
=
&
rb500_pata_port_ops
;
ap
->
pio_mask
=
0x1f
;
/* PIO4 */
ap
->
flags
=
ATA_FLAG_NO_LEGACY
|
ATA_FLAG_MMIO
;
ap
->
ioaddr
.
cmd_addr
=
info
->
iobase
+
RB500_CF_REG_CMD
;
ap
->
ioaddr
.
ctl_addr
=
info
->
iobase
+
RB500_CF_REG_CTRL
;
ap
->
ioaddr
.
altstatus_addr
=
info
->
iobase
+
RB500_CF_REG_CTRL
;
ata_std_ports
(
&
ap
->
ioaddr
);
ap
->
ioaddr
.
data_addr
=
info
->
iobase
+
RB500_CF_REG_DATA
;
}
static
__devinit
int
rb500_pata_driver_probe
(
struct
platform_device
*
pdev
)
{
unsigned
int
irq
;
int
gpio
;
struct
resource
*
res
;
struct
ata_host
*
ah
;
struct
rb500_cf_info
*
info
;
int
ret
;
res
=
platform_get_resource
(
pdev
,
IORESOURCE_MEM
,
0
);
if
(
!
res
)
{
dev_err
(
&
pdev
->
dev
,
"no IOMEM resource found
\n
"
);
return
-
EINVAL
;
}
irq
=
platform_get_irq
(
pdev
,
0
);
if
(
irq
<=
0
)
{
dev_err
(
&
pdev
->
dev
,
"no IRQ resource found
\n
"
);
return
-
ENOENT
;
}
gpio
=
irq_to_gpio
(
irq
);
if
(
gpio
<
0
)
{
dev_err
(
&
pdev
->
dev
,
"no GPIO found for irq%d
\n
"
,
irq
);
return
-
ENOENT
;
}
ret
=
gpio_request
(
gpio
,
DRV_NAME
);
if
(
ret
)
{
dev_err
(
&
pdev
->
dev
,
"GPIO request failed
\n
"
);
return
ret
;
}
/* allocate host */
ah
=
ata_host_alloc
(
&
pdev
->
dev
,
RB500_CF_MAXPORTS
);
if
(
!
ah
)
return
-
ENOMEM
;
platform_set_drvdata
(
pdev
,
ah
);
info
=
devm_kzalloc
(
&
pdev
->
dev
,
sizeof
(
*
info
),
GFP_KERNEL
);
if
(
!
info
)
return
-
ENOMEM
;
ah
->
private_data
=
info
;
info
->
gpio_line
=
gpio
;
info
->
irq
=
irq
;
info
->
iobase
=
devm_ioremap_nocache
(
&
pdev
->
dev
,
res
->
start
,
res
->
end
-
res
->
start
+
1
);
if
(
!
info
->
iobase
)
return
-
ENOMEM
;
ret
=
gpio_direction_input
(
gpio
);
if
(
ret
)
{
dev_err
(
&
pdev
->
dev
,
"unable to set GPIO direction, err=%d
\n
"
,
ret
);
goto
err_free_gpio
;
}
rb500_pata_setup_ports
(
ah
);
ret
=
ata_host_activate
(
ah
,
irq
,
rb500_pata_irq_handler
,
IRQF_TRIGGER_LOW
,
&
rb500_pata_sht
);
if
(
ret
)
goto
err_free_gpio
;
return
0
;
err_free_gpio:
gpio_free
(
gpio
);
return
ret
;
}
static
__devexit
int
rb500_pata_driver_remove
(
struct
platform_device
*
pdev
)
{
struct
ata_host
*
ah
=
platform_get_drvdata
(
pdev
);
struct
rb500_cf_info
*
info
=
ah
->
private_data
;
ata_host_detach
(
ah
);
gpio_free
(
info
->
gpio_line
);
return
0
;
}
static
struct
platform_driver
rb500_pata_platform_driver
=
{
.
probe
=
rb500_pata_driver_probe
,
.
remove
=
__devexit_p
(
rb500_pata_driver_remove
),
.
driver
=
{
.
name
=
DRV_NAME
,
.
owner
=
THIS_MODULE
,
},
};
/* ------------------------------------------------------------------------ */
#define DRV_INFO DRV_DESC " version " DRV_VERSION
static
int
__init
rb500_pata_module_init
(
void
)
{
printk
(
KERN_INFO
DRV_INFO
"
\n
"
);
return
platform_driver_register
(
&
rb500_pata_platform_driver
);
}
static
void
__exit
rb500_pata_module_exit
(
void
)
{
platform_driver_unregister
(
&
rb500_pata_platform_driver
);
}
MODULE_AUTHOR
(
"Gabor Juhos <juhosg at openwrt.org>"
);
MODULE_AUTHOR
(
"Florian Fainelli <florian@openwrt.org>"
);
MODULE_DESCRIPTION
(
DRV_DESC
);
MODULE_VERSION
(
DRV_VERSION
);
MODULE_LICENSE
(
"GPL"
);
module_init
(
rb500_pata_module_init
);
module_exit
(
rb500_pata_module_exit
);
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