Commit Graph

18 Commits

Author SHA1 Message Date
Borislav Petkov
19f52a784f ide-atapi: remove pc->buf
Now after all users of pc->buf have been converted, remove the 64B buffer
embedded in each packet command.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:38 +02:00
Borislav Petkov
60cfab85da ide-floppy/ide_floppy_get_format_progress: use local sense buffer
There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:28 +02:00
Borislav Petkov
5122e5174f ide-floppy/ide_floppy_format_unit: use local buffer
Pass the buffer into ide_floppy_create_format_unit_cmd instead of using
pc->buf.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:20 +02:00
Borislav Petkov
802e663427 ide-floppy/ide_floppy_get_sfrp_bit: use local buffer
There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:17 +02:00
Borislav Petkov
b13345f39d ide-atapi: add a buffer-arg to ide_queue_pc_tail
This is in preparation of removing ide_atapi_pc. Expose the buffer as an
argument to ide_queue_pc_tail with later replacing it with local buffer
or even kmalloc'ed one if needed due to stack usage constraints.

Also, add the possibility of passing a NULL-ptr buffer for cmds which
don't transfer data besides the cdb. While at it, switch to local buffer
in idetape_get_mode_sense_results().

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:09 +02:00
Borislav Petkov
5a0e43b5e2 ide-atapi: add a len-parameter to ide_queue_pc_tail
This is in preparation for removing ide_atapi_pc.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-05-15 06:44:06 +02:00
Bartlomiej Zolnierkiewicz
41fa9f863b ide: decrease size of ->pc_buf field in struct ide_atapi_pc
struct ide_atapi_pc is often allocated on the stack and size of ->pc_buf
size is 256 bytes.  However since only ide_floppy_create_read_capacity_cmd()
and idetape_create_inquiry_cmd() require such size allocate buffers for
these pc-s explicitely and decrease ->pc_buf size to 64 bytes.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:25 +02:00
Linus Torvalds
07bd3f4731 ide-floppy: allocate only toplevel packet commands
This makes the top-level function just allocate a single pc entry, and then
pass it down as a pointer to all the helper functions that also need one
of those "struct ide_atapi_pc" things. As far as I can tell, the use of
these things never overlaps each other, BUT I DID NOT CHECK VERY CLOSELY!

So I'm not guaranteeing this is correct, and I don't have the hardware. It
would be good for somebody who knows the code more, and has the hardware,
could please test this?

With this, ide-floppy still has fairly big stack usage, but instead of

	idefloppy_ioctl [vmlinux]:              1208
	ide_floppy_get_capacity [vmlinux]:      872
	idefloppy_release [vmlinux]:            408
	idefloppy_open [vmlinux]:               408

where those two first ones are at the very top of the list of stack users
for me, it's now

	ide_floppy_get_capacity [vmlinux]:           404
	ide_floppy_ioctl [vmlinux]:                  364

ie they are still high, but they are no longer at the top.

Borislav: Since ide_floppy_get_capacity is passed as a function pointer to other
parts of the kernel (e.g., block layer) we need that ide_atapi_pc to be created
on stack. Also, redid stack users numbers above. The two functions missing from
Linus' original 'make stackusage' output are due to ide being
rewritten/reorganized atm.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-02 16:12:51 +01:00
Al Viro
badf8082c3 [PATCH] switch ide_disk_ops ->ioctl() to sane prototype
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:30 -04:00
Al Viro
1bddd9e645 [PATCH] lose the unused file argument in generic_ide_ioctl()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:16 -04:00
Al Viro
74f3c8aff3 [PATCH] switch scsi_cmd_ioctl() to passing fmode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:14 -04:00
Al Viro
aeb5d72706 [PATCH] introduce fmode_t, do annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:06 -04:00
Bartlomiej Zolnierkiewicz
0df962777b ide-floppy: remove idefloppy_floppy_t typedef
There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-17 18:09:16 +02:00
Bartlomiej Zolnierkiewicz
806f80a6fc ide: add generic ATA/ATAPI disk driver
* Add struct ide_disk_ops containing protocol specific methods.

* Add 'struct ide_disk_ops *' to ide_drive_t.

* Convert ide-{disk,floppy} drivers to use struct ide_disk_ops.

* Merge ide-{disk,floppy} drivers into generic ide-gd driver.

While at it:
- ide_disk_init_capacity() -> ide_disk_get_capacity()

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-17 18:09:14 +02:00
Bartlomiej Zolnierkiewicz
e01286282e ide: IDE_AFLAG_FORMAT_IN_PROGRESS -> IDE_DFLAG_FORMAT_IN_PROGRESS
There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-17 18:09:11 +02:00
Bartlomiej Zolnierkiewicz
5bb1536a07 ide-floppy: move all ioctl handling to ide-floppy_ioctl.c (take 2)
While at it:
- idefloppy_ioctl() -> ide_floppy_ioctl()

v2:
Fix for idefloppy_ioctl name change from Stephen Rothwell.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-13 21:39:44 +02:00
Bartlomiej Zolnierkiewicz
6b0da28b2d ide: add ide_retry_pc() helper
* Add ide_create_request_sense_cmd() and ide_retry_pc() helpers
  and convert ide-{atapi,floppy,tape}.c to use them.

* Remove no longer used ide*_create_request_sense_cmd(),
  ide*_retry_pc() and 'retry_pc' argument from ide_pc_intr().

* Make ide_queue_pc_head() static.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-13 21:39:32 +02:00
Bartlomiej Zolnierkiewicz
0127854d7c ide-floppy: move floppy ioctls handling to ide-floppy_ioctl.c
While at it:

- idefloppy_create_read_capacity_cmd() -> ide_floppy_create_read_capacity_cmd()
- idefloppy_create_mode_sense_cmd() -> ide_floppy_create_mode_sense_cmd()
- idefloppy_create_request_sense_cmd() -> ide_floppy_create_request_sense_cmd()
- idefloppy_create_format_unit_cmd() -> ide_floppy_create_format_unit_cmd()
- idefloppy_get_sfrp_bit() -> ide_floppy_get_sfrp_bit()

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-10 22:39:38 +02:00