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Kirill Smelkov
linux
Commits
411d439b
Commit
411d439b
authored
Oct 17, 2002
by
Alexander Viro
Committed by
Linus Torvalds
Oct 17, 2002
Browse files
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Plain Diff
[PATCH] cdu31a.c
* switched to private queue * set ->queue * slightly cleaned up
parent
61320eeb
Changes
1
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Showing
1 changed file
with
87 additions
and
101 deletions
+87
-101
drivers/cdrom/cdu31a.c
drivers/cdrom/cdu31a.c
+87
-101
No files found.
drivers/cdrom/cdu31a.c
View file @
411d439b
...
...
@@ -177,7 +177,6 @@
#include "cdu31a.h"
#define MAJOR_NR CDU31A_CDROM_MAJOR
#define DEVICE_NR(device) (minor(device))
#include <linux/blk.h>
#define CDU31A_READAHEAD 4
/* 128 sector, 64kB, 32 reads read-ahead */
...
...
@@ -238,6 +237,7 @@ static volatile unsigned short sony_cd_result_reg;
static
volatile
unsigned
short
sony_cd_read_reg
;
static
volatile
unsigned
short
sony_cd_fifost_reg
;
static
struct
request_queue
cdu31a_queue
;
static
spinlock_t
cdu31a_lock
=
SPIN_LOCK_UNLOCKED
;
/* queue lock */
static
int
sony_spun_up
=
0
;
/* Has the drive been spun up? */
...
...
@@ -1531,6 +1531,7 @@ read_data_block(char *buffer,
*/
static
void
do_cdu31a_request
(
request_queue_t
*
q
)
{
struct
request
*
req
;
int
block
;
int
nblock
;
unsigned
char
res_reg
[
12
];
...
...
@@ -1578,125 +1579,111 @@ static void do_cdu31a_request(request_queue_t * q)
del_timer
(
&
cdu31a_abort_timer
);
while
(
1
)
{
cdu31a_request_startover:
/*
* The beginning here is stolen from the hard disk driver. I hope
* it's right.
*/
if
(
blk_queue_empty
(
QUEUE
))
if
(
blk_queue_empty
(
q
))
goto
end_do_cdu31a_request
;
if
(
!
sony_spun_up
)
{
if
(
!
sony_spun_up
)
scd_spinup
();
}
block
=
CURRENT
->
sector
;
nblock
=
CURRENT
->
nr_sectors
;
req
=
elv_next_request
(
q
);
block
=
req
->
sector
;
nblock
=
req
->
nr_sectors
;
if
(
!
sony_toc_read
)
{
printk
(
"CDU31A: TOC not read
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
end_request
(
req
,
0
);
continue
;
}
if
(
CURRENT
->
flags
&
REQ_CMD
)
{
switch
(
rq_data_dir
(
CURRENT
))
{
case
READ
:
/*
* If the block address is invalid or the request goes beyond the end of
* the media, return an error.
*/
if
((
block
/
4
)
>=
sony_toc
.
lead_out_start_lba
)
{
printk
(
"CDU31A: Request past end of media
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
if
(((
block
+
nblock
)
/
4
)
>=
sony_toc
.
lead_out_start_lba
)
{
printk
(
"CDU31A: Request past end of media
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
/* WTF??? */
if
(
!
(
req
->
flags
&
REQ_CMD
))
continue
;
if
(
rq_data_dir
(
req
)
==
WRITE
)
{
end_request
(
req
,
0
);
continue
;
}
if
(
rq_data_dir
(
req
)
!=
READ
)
panic
(
"CDU31A: Unknown cmd"
);
/*
* If the block address is invalid or the request goes beyond the end of
* the media, return an error.
*/
if
((
block
/
4
)
>=
sony_toc
.
lead_out_start_lba
)
{
printk
(
"CDU31A: Request past end of media
\n
"
);
end_request
(
req
,
0
);
continue
;
}
if
(((
block
+
nblock
)
/
4
)
>=
sony_toc
.
lead_out_start_lba
)
{
printk
(
"CDU31A: Request past end of media
\n
"
);
end_request
(
req
,
0
);
continue
;
}
num_retries
=
0
;
num_retries
=
0
;
try_read_again:
while
(
handle_sony_cd_attention
());
try_read_again:
while
(
handle_sony_cd_attention
());
if
(
!
sony_toc_read
)
{
printk
(
"CDU31A: TOC not read
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
if
(
!
sony_toc_read
)
{
printk
(
"CDU31A: TOC not read
\n
"
);
end_request
(
req
,
0
);
continue
;
}
/* If no data is left to be read from the drive, start the
next request. */
if
(
sony_blocks_left
==
0
)
{
if
(
start_request
(
block
/
4
,
CDU31A_READAHEAD
/
4
,
0
))
{
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
}
/* If the requested block is not the next one waiting in
the driver, abort the current operation and start a
new one. */
else
if
(
block
!=
sony_next_block
)
{
/* If no data is left to be read from the drive, start the
next request. */
if
(
sony_blocks_left
==
0
)
{
if
(
start_request
(
block
/
4
,
CDU31A_READAHEAD
/
4
,
0
))
{
end_request
(
req
,
0
);
continue
;
}
}
/* If the requested block is not the next one waiting in
the driver, abort the current operation and start a
new one. */
else
if
(
block
!=
sony_next_block
)
{
#if DEBUG
printk
(
"CDU31A Warning: Read for block %d, expected %d
\n
"
,
block
,
sony_next_block
);
printk
(
"CDU31A Warning: Read for block %d, expected %d
\n
"
,
block
,
sony_next_block
);
#endif
abort_read
();
if
(
!
sony_toc_read
)
{
printk
(
"CDU31A: TOC not read
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
if
(
start_request
(
block
/
4
,
CDU31A_READAHEAD
/
4
,
0
))
{
printk
(
"CDU31a: start request failed
\n
"
);
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
}
abort_read
();
if
(
!
sony_toc_read
)
{
printk
(
"CDU31A: TOC not read
\n
"
);
end_request
(
req
,
0
);
continue
;
}
if
(
start_request
(
block
/
4
,
CDU31A_READAHEAD
/
4
,
0
))
{
printk
(
"CDU31a: start request failed
\n
"
);
end_request
(
req
,
0
);
continue
;
}
}
read_data_block
(
CURRENT
->
buffer
,
block
,
nblock
,
res_reg
,
&
res_size
);
if
(
res_reg
[
0
]
==
0x20
)
{
if
(
num_retries
>
MAX_CDU31A_RETRIES
)
{
end_request
(
CURRENT
,
0
);
goto
cdu31a_request_startover
;
}
read_data_block
(
req
->
buffer
,
block
,
nblock
,
res_reg
,
&
res_size
);
num_retries
++
;
if
(
res_reg
[
1
]
==
SONY_NOT_SPIN_ERR
)
{
do_sony_cd_cmd
(
SONY_SPIN_UP_CMD
,
NULL
,
0
,
res_reg
,
&
res_size
);
}
else
{
printk
(
"CDU31A: %s error for block %d, nblock %d
\n
"
,
translate_error
(
res_reg
[
1
]),
block
,
nblock
);
}
goto
try_read_again
;
}
else
{
end_request
(
CURRENT
,
1
);
}
break
;
if
(
res_reg
[
0
]
!=
0x20
)
{
end_request
(
req
,
1
);
continue
;
}
case
WRITE
:
end_request
(
CURRENT
,
0
);
break
;
if
(
num_retries
>
MAX_CDU31A_RETRIES
)
{
end_request
(
req
,
0
);
continue
;
}
default:
panic
(
"CDU31A: Unknown cmd"
);
}
num_retries
++
;
if
(
res_reg
[
1
]
==
SONY_NOT_SPIN_ERR
)
{
do_sony_cd_cmd
(
SONY_SPIN_UP_CMD
,
NULL
,
0
,
res_reg
,
&
res_size
);
}
else
{
printk
(
"CDU31A: %s error for block %d, nblock %d
\n
"
,
translate_error
(
res_reg
[
1
]),
block
,
nblock
);
}
goto
try_read_again
;
}
end_do_cdu31a_request:
spin_lock_irq
(
q
->
queue_lock
);
...
...
@@ -3451,9 +3438,7 @@ int __init cdu31a_init(void)
is_a_cdu31a
=
strcmp
(
"CD-ROM CDU31A"
,
drive_config
.
product_id
)
==
0
;
blk_init_queue
(
BLK_DEFAULT_QUEUE
(
MAJOR_NR
),
do_cdu31a_request
,
&
cdu31a_lock
);
blk_init_queue
(
&
cdu31a_queue
,
do_cdu31a_request
,
&
cdu31a_lock
);
init_timer
(
&
cdu31a_abort_timer
);
cdu31a_abort_timer
.
function
=
handle_abort_timeout
;
...
...
@@ -3462,6 +3447,7 @@ int __init cdu31a_init(void)
scd_gendisk
=
disk
;
if
(
register_cdrom
(
&
scd_info
))
goto
errout0
;
disk
->
queue
=
&
cdu31a_queue
;
add_disk
(
disk
);
disk_changed
=
1
;
...
...
@@ -3469,7 +3455,7 @@ int __init cdu31a_init(void)
errout0:
printk
(
"Unable to register CDU-31a with Uniform cdrom driver
\n
"
);
blk_cleanup_queue
(
BLK_DEFAULT_QUEUE
(
MAJOR_NR
)
);
blk_cleanup_queue
(
&
cdu31a_queue
);
put_disk
(
disk
);
errout1:
if
(
unregister_blkdev
(
MAJOR_NR
,
"cdu31a"
))
{
...
...
@@ -3496,7 +3482,7 @@ void __exit cdu31a_exit(void)
return
;
}
blk_cleanup_queue
(
BLK_DEFAULT_QUEUE
(
MAJOR_NR
)
);
blk_cleanup_queue
(
&
cdu31a_queue
);
if
(
cdu31a_irq
>
0
)
free_irq
(
cdu31a_irq
,
NULL
);
...
...
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