Commit graph

4290 commits

Author SHA1 Message Date
FUJITA Tomonori
8d8bb39b9e dma-mapping: add the device argument to dma_mapping_error()
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
architecture does:

This enables us to cleanly fix the Calgary IOMMU issue that some devices
are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).

I think that per-device dma_mapping_ops support would be also helpful for
KVM people to support PCI passthrough but Andi thinks that this makes it
difficult to support the PCI passthrough (see the above thread).  So I
CC'ed this to KVM camp.  Comments are appreciated.

A pointer to dma_mapping_ops to struct dev_archdata is added.  If the
pointer is non NULL, DMA operations in asm/dma-mapping.h use it.  If it's
NULL, the system-wide dma_ops pointer is used as before.

If it's useful for KVM people, I plan to implement a mechanism to register
a hook called when a new pci (or dma capable) device is created (it works
with hot plugging).  It enables IOMMUs to set up an appropriate
dma_mapping_ops per device.

The major obstacle is that dma_mapping_error doesn't take a pointer to the
device unlike other DMA operations.  So x86 can't have dma_mapping_ops per
device.  Note all the POWER IOMMUs use the same dma_mapping_error function
so this is not a problem for POWER but x86 IOMMUs use different
dma_mapping_error functions.

The first patch adds the device argument to dma_mapping_error.  The patch
is trivial but large since it touches lots of drivers and dma-mapping.h in
all the architecture.

This patch:

dma_mapping_error() doesn't take a pointer to the device unlike other DMA
operations.  So we can't have dma_mapping_ops per device.

Note that POWER already has dma_mapping_ops per device but all the POWER
IOMMUs use the same dma_mapping_error function.  x86 IOMMUs use device
argument.

[akpm@linux-foundation.org: fix sge]
[akpm@linux-foundation.org: fix svc_rdma]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix bnx2x]
[akpm@linux-foundation.org: fix s2io]
[akpm@linux-foundation.org: fix pasemi_mac]
[akpm@linux-foundation.org: fix sdhci]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix sparc]
[akpm@linux-foundation.org: fix ibmvscsi]
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:03 -07:00
Brian King
39c1ffecc6 ibmvfc: Add support for collaborative memory overcommit
Adds support to the ibmvfc driver for collaborative memory overcommit.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-25 15:44:45 +10:00
Robert Jennings
7912a0ac59 ibmvscsi: driver enablement for CMO
Enable the driver to function in a Cooperative Memory Overcommitment (CMO)
environment.

The following changes are made to enable the driver for CMO:
 * DMA mapping errors will not result in error messages if entitlement has
   been exceeded and resources were not available.
 * The driver has a get_desired_dma function defined to function
   in a CMO environment. It will indicate how much IO memory it would like
   to function.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-25 15:44:44 +10:00
Linus Torvalds
b5684b83b1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (76 commits)
  ide: use proper printk() KERN_* levels in ide-probe.c
  ide: fix for EATA SCSI HBA in ATA emulating mode
  ide: remove stale comments from drivers/ide/Makefile
  ide: enable local IRQs in all handlers for TASKFILE_NO_DATA data phase
  ide-scsi: remove kmalloced struct request
  ht6560b: remove old history
  ht6560b: update email address
  ide-cd: fix oops when using growisofs
  gayle: release resources on ide_host_add() failure
  palm_bk3710: add UltraDMA/100 support
  ide: trivial sparse annotations
  ide: ide-tape.c sparse annotations and unaligned access removal
  ide: drop 'name' parameter from ->init_chipset method
  ide: prefix messages from IDE PCI host drivers by driver name
  it821x: remove DECLARE_ITE_DEV() macro
  it8213: remove DECLARE_ITE_DEV() macro
  ide: include PCI device name in messages from IDE PCI host drivers
  ide: remove <asm/ide.h> for some archs
  ide-generic: remove ide_default_{io_base,irq}() inlines (take 3)
  ide-generic: is no longer needed on ppc32
  ...
2008-07-24 14:55:09 -07:00
FUJITA Tomonori
e27420d046 ide-scsi: remove kmalloced struct request
This converts ide-scsi to use blk_get/put_request instead of
kmalloc/kfree.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-24 22:53:35 +02:00
Bartlomiej Zolnierkiewicz
08da591e14 ide: add ide_device_{get,put}() helpers
* Add 'struct ide_host *host' field to ide_hwif_t and set it
  in ide_host_alloc_all().

* Add ide_device_{get,put}() helpers loosely based on SCSI's
  scsi_device_{get,put}() ones.

* Convert IDE device drivers to use ide_device_{get,put}().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-24 22:53:15 +02:00
Andrea Righi
27ac792ca0 PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures
On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit
boundary. For example:

	u64 val = PAGE_ALIGN(size);

always returns a value < 4GB even if size is greater than 4GB.

The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for
example):

#define PAGE_SHIFT      12
#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))
...
#define PAGE_ALIGN(addr)       (((addr)+PAGE_SIZE-1)&PAGE_MASK)

The "~" is performed on a 32-bit value, so everything in "and" with
PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary.
Using the ALIGN() macro seems to be the right way, because it uses
typeof(addr) for the mask.

Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in
include/linux/mm.h.

See also lkml discussion: http://lkml.org/lkml/2008/6/11/237

[akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c]
[akpm@linux-foundation.org: fix v850]
[akpm@linux-foundation.org: fix powerpc]
[akpm@linux-foundation.org: fix arm]
[akpm@linux-foundation.org: fix mips]
[akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c]
[akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c]
[akpm@linux-foundation.org: fix powerpc]
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:21 -07:00
Borislav Petkov
be4c916e96 ide-scsi: convert to using the new atapi_flags
Remove unused IDESCSI_PC_RQ while at it.

There should be no functionality change resulting from this patch.

[bart: IDE_FLAG_* -> IDE_AFLAG_*, dev_flags -> atapi_flags]

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:56:01 +02:00
Borislav Petkov
08feacf3bc ide-scsi: pass packet command in rq->cmd
Make a redundant copy of the packet command bits into rq->cmd.
Later, after all drivers have been converted, it'll be
switched to use that in the common code instead of pc->c.

There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:56:00 +02:00
Borislav Petkov
db9d286988 ide-scsi: use drive->pc_callback instead of pc->callback
There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:55:59 +02:00
Bartlomiej Zolnierkiewicz
374e042c3e ide: add struct ide_tp_ops (take 2)
* Add struct ide_tp_ops for transport methods.

* Add 'const struct ide_tp_ops *tp_ops' to struct ide_port_info
  and ide_hwif_t.

* Set the default hwif->tp_ops in ide_init_port_data().

* Set host driver specific hwif->tp_ops in ide_init_port().

* Export ide_exec_command(), ide_read_status(), ide_read_altstatus(),
  ide_read_sff_dma_status(), ide_set_irq(), ide_tf_{load,read}()
  and ata_{in,out}put_data().

* Convert host drivers and core code to use struct ide_tp_ops.

* Remove no longer needed default_hwif_transport().

* Cleanup ide_hwif_t from methods that are now in struct ide_tp_ops.

While at it:

* Use struct ide_port_info in falconide.c and q40ide.c.

* Rename ata_{in,out}put_data() to ide_{in,out}put_data().

v2:

* Fix missing convertion in ns87415.c.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:55:56 +02:00
Bartlomiej Zolnierkiewicz
b73c7ee25d ide: add ->read_status method
* Remove ide_read_status() inline helper.

* Add ->read_status method for reading ATA Status register
  and use it instead of ->INB.

While at it:

* Don't use HWGROUP() macro.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:55:52 +02:00
Bartlomiej Zolnierkiewicz
c6dfa867bb ide: add ->exec_command method
Add ->exec_command method for writing ATA Command register
and use it instead of ->OUTBSYNC.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-23 19:55:51 +02:00
Kay Sievers
aab0de2451 driver core: remove KOBJ_NAME_LEN define
Kobjects do not have a limit in name size since a while, so stop
pretending that they do.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:52 -07:00
Greg Kroah-Hartman
695794ae0c Driver Core: add ability for class_find_device to start in middle of list
This mirrors the functionality that driver_find_device has as well.

We add a start variable, and all callers of the function are fixed up at
the same time.

The block layer will be using this new functionality in a follow-on
patch.


Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:47 -07:00
Greg Kroah-Hartman
9def0b9761 device create: scsi: convert device_create to device_create_drvdata
device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.

Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:44 -07:00
Chandra Seetharaman
33af79d12e scsi_dh: Verify "dev" is a sdev before accessing it.
Before accessing the device data structure in hardware handlers,
make sure it is a indeed a sdev device.

Yinghai Lu <yhlu.kernel@gmail.com> found the bug on Jul 16, 2008,
and later tested/verified the following fix.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-16 17:54:21 -07:00
Elias Oltmanns
3ef5eb424e IDE: Remove unused code
Remove some code which has been made obsolete and hasn't worked properly
before anyway.  Part of the infrastructure may be reintroduced in a
follow up patch to implement a working command aborting facility.

Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk>
Cc: "Randy Dunlap" <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-16 20:33:48 +02:00
Linus Torvalds
89a93f2f48 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (102 commits)
  [SCSI] scsi_dh: fix kconfig related build errors
  [SCSI] sym53c8xx: Fix bogus sym_que_entry re-implementation of container_of
  [SCSI] scsi_cmnd.h: remove double inclusion of linux/blkdev.h
  [SCSI] make struct scsi_{host,target}_type static
  [SCSI] fix locking in host use of blk_plug_device()
  [SCSI] zfcp: Cleanup external header file
  [SCSI] zfcp: Cleanup code in zfcp_erp.c
  [SCSI] zfcp: zfcp_fsf cleanup.
  [SCSI] zfcp: consolidate sysfs things into one file.
  [SCSI] zfcp: Cleanup of code in zfcp_aux.c
  [SCSI] zfcp: Cleanup of code in zfcp_scsi.c
  [SCSI] zfcp: Move status accessors from zfcp to SCSI include file.
  [SCSI] zfcp: Small QDIO cleanups
  [SCSI] zfcp: Adapter reopen for large number of unsolicited status
  [SCSI] zfcp: Fix error checking for ELS ADISC requests
  [SCSI] zfcp: wait until adapter is finished with ERP during auto-port
  [SCSI] ibmvfc: IBM Power Virtual Fibre Channel Adapter Client Driver
  [SCSI] sg: Add target reset support
  [SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC
  [SCSI] sd: Move scsi_disk() accessor function to sd.h
  ...
2008-07-15 18:58:04 -07:00
Mikulas Patocka
3a628b0fd4 Don't crash on IOMMU overflow in A100U2W driver
Handle IOMMU overflow correctly, by retrying.  IOMMU errors can happen
and drivers must deal with them.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-15 14:30:56 -07:00
Mikulas Patocka
a5db33411a BUG_ON on kernel misbehavior on A100U2W driver
With broken Sparc64 IOMMU accounting, the kernel submits larger requests
then allowed.  Better to crash on BUG than corrupt memory.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-15 14:30:56 -07:00
Mikulas Patocka
56d387ec21 Add udelay to A100U2W SCSI driver
udelay is required on Sun Ultra 5.

I don't know any reason or explanation for this, it was found purely
experimentally.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-15 14:30:56 -07:00
Mikulas Patocka
987ff954cd Fix endianity in A100U2W SCSI driver
Support big endian systems in a100u2w driver.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-15 14:30:56 -07:00
Linus Torvalds
22a37bcb78 Merge branch 'sbp2-spindown' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'sbp2-spindown' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: sbp2: spin disks down on suspend and shutdown
  firewire: fw-sbp2: spin disks down on suspend and shutdown
  ieee1394: sbp2: fix spindown for PL-3507 and TSB42AA9 firmwares
  firewire: fw-sbp2: fix spindown for PL-3507 and TSB42AA9 firmwares
  scsi: sd: optionally set power condition in START STOP UNIT
2008-07-15 12:39:44 -07:00
Linus Torvalds
98339cbd36 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (80 commits)
  ide-floppy: fix unfortunate function naming
  ide-tape: unify idetape_create_read/write_cmd
  ide: add ide_pc_intr() helper
  ide-{floppy,scsi}: read Status Register before stopping DMA engine
  ide-scsi: add more debugging to idescsi_pc_intr()
  ide-scsi: use pc->callback
  ide-floppy: add more debugging to idefloppy_pc_intr()
  ide-tape: always log debug info in idetape_pc_intr() if debugging is enabled
  ide-tape: add ide_tape_io_buffers() helper
  ide-tape: factor out DSC handling from idetape_pc_intr()
  ide-{floppy,tape}: move checking of ->failed_pc to ->callback
  ide: add ide_issue_pc() helper
  ide: add PC_FLAG_DRQ_INTERRUPT pc flag
  ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc()
  ide: add ide_transfer_pc() helper
  ide-scsi: set drive->scsi flag for devices handled by the driver
  ide-{cd,floppy,tape}: remove checking for drive->scsi
  ide: add PC_FLAG_ZIP_DRIVE pc flag
  ide-tape: factor out waiting for good ireason from idetape_transfer_pc()
  ide-tape: set PC_FLAG_DMA_IN_PROGRESS flag in idetape_transfer_pc()
  ...
2008-07-15 11:15:36 -07:00
Bartlomiej Zolnierkiewicz
646c0cb6c4 ide: add ide_pc_intr() helper
* ide-tape.c: add 'drive' argument to idetape_update_buffers().

* Add generic ide_pc_intr() helper to ide-atapi.c and then
  convert ide-{floppy,tape,scsi} device drivers to use it.

* ide-tape.c: remove no longer needed DBG_PC_INTR.

There should be no functional changes caused by this patch
(unless the debugging is explicitely compiled in).

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:22:03 +02:00
Bartlomiej Zolnierkiewicz
55d82bfa67 ide-{floppy,scsi}: read Status Register before stopping DMA engine
Read Status Register before stopping DMA engine to match ide-tape
device driver - it should be safe and shouldn't affect anything.

This is a preparation for adding generic ide_pc_intr() helper.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:22:03 +02:00
Bartlomiej Zolnierkiewicz
cdca5c1f3b ide-scsi: add more debugging to idescsi_pc_intr()
Add more debugging to idescsi_pc_intr() to match ide-tape's
idetape_pc_intr().

While at it:

* Correct the first debug message.

This is a preparation for adding generic ide_pc_intr() helper.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:22:02 +02:00
Bartlomiej Zolnierkiewicz
c6b2d260b5 ide-scsi: use pc->callback
* Add ide_scsi_callback() pc->callback implementation, then update
  idescsi_check_condition() and idescsi_queue() to setup ->callback.

* Convert idescsi_pc_intr() to use pc->callback.

This is a preparation for adding generic ide_pc_intr() helper.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:22:02 +02:00
Bartlomiej Zolnierkiewicz
6bf1641ca1 ide: add ide_issue_pc() helper
Add generic ide_issue_pc() helper to ide-atapi.c and then
convert ide-{floppy,tape,scsi} device drivers to use it.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:22:00 +02:00
Bartlomiej Zolnierkiewicz
28c7214bd8 ide: add PC_FLAG_DRQ_INTERRUPT pc flag
Add PC_FLAG_DRQ_INTERRUPT pc flag, set it in ide*_do_request()
and check for it (instead of checking for IDE*_FLAG_DRQ_INTERRUPT)
in ide*_issue_pc().  This is a preparation for adding generic
ide_issue_pc() helper.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:59 +02:00
Bartlomiej Zolnierkiewicz
4cc196897d ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc()
Move idescsi_map_sg() call out from idescsi_issue_pc()
to idescsi_do_request() as a preparation to adding generic
ide_issue_pc() helper.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:58 +02:00
Bartlomiej Zolnierkiewicz
594c16d8dd ide: add ide_transfer_pc() helper
* Add ide-atapi.c file for generic ATAPI support together with
  CONFIG_IDE_ATAPI config option.

* Add generic ide_transfer_pc() helper to ide-atapi.c and then
  convert ide-{floppy,tape,scsi} device drivers to use it.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:58 +02:00
Bartlomiej Zolnierkiewicz
f83cbc77b0 ide-scsi: set drive->scsi flag for devices handled by the driver
This is a preparation for adding generic ide_transfer_pc() helper.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:58 +02:00
Bartlomiej Zolnierkiewicz
568ca92774 ide-{floppy,tape,scsi}: log device name instead of driver name
Log device name instead of driver name in *_pc_intr() and *_transfer_pc*().

While at it:

* Merge two consecutive printk()-s in *_pc_intr() together.

* Replace "floppy"/"tape"/"scsi" references in printk()-s by "device".

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:54 +02:00
Bartlomiej Zolnierkiewicz
43a2b5b293 ide-scsi: add debug_log() macro
Add debug_log() macro and convert the driver to use it.

[ This makes debug messages to be always prefixed with "ide-scsi: "
  and use KERN_INFO level. ]

While at it:

* Change "DMA complete" debug message to "DMA finished" to match
  other ATAPI device drivers.

* Use __func__.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:52 +02:00
Bartlomiej Zolnierkiewicz
c8c5112980 ide-scsi: remove superfluous BUG_ON() from idescsi_transfer_pc()
ide_set_handler() bugs on ->handler == NULL so no need to do it
in idescsi_transfer_pc().

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:52 +02:00
Bartlomiej Zolnierkiewicz
3e52fb4d1f ide-scsi: merge idescsi_input_buffers() and idescsi_output_buffers()
* Merge idescsi_input_buffers() and idescsi_output_buffers()
  into ide_scsi_io_buffers() helper.

While at it:

* Log device name instead of driver name on error.

* Use xfer_func_t.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:52 +02:00
Bartlomiej Zolnierkiewicz
6c60bd8ea7 ide-scsi: fix Interrupt Reason checking in idescsi_pc_intr()
Set PC_FLAG_WRITING pc flag in idescsi_queue() (if needed)
and then fix Interrupt Reason checking in idescsi_pc_intr().

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:52 +02:00
Bartlomiej Zolnierkiewicz
c04bbc812b ide-scsi: fix handling of DMA errors in idescsi_pc_intr()
Check return value of ->dma_end method and if there was a DMA error
handle it accordingly (set PC_FLAG_DMA_ERROR pc flag, don't update
pc->xferred and increase rq->errors).

Also move debug message in the right place while at it.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:51 +02:00
Bartlomiej Zolnierkiewicz
e8e25f03e1 ide-scsi: fix DRQ checking for DMA transfers in idescsi_pc_intr()
If DRQ bit of Status Register is not cleared it is an error condition
and should be handled accordingly (disable DMA + reset the device).

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:51 +02:00
Bartlomiej Zolnierkiewicz
b3d96afccf ide-scsi: fix race in idescsi_transfer_pc()
Start DMA engine before sending content of packet command (otherwise
it is possible that IRQ will happen before DMA engine is started).

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:51 +02:00
FUJITA Tomonori
63f5abb095 ide: remove action argument in ide_do_drive_cmd
ide_do_drive_cmd is called only with ide_preempt action argument. So
we can remove the action argument in ide_do_drive_cmd and ide_action_t
typedef.

This patch also includes two minor cleanups: 1) ide_do_drive_cmd
always succeeds so we don't need the return value; 2) the callers use
blk_rq_init before ide_do_drive_cmd so there is no need to initialize
rq->errors.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:51 +02:00
FUJITA Tomonori
7e12ca11d6 ide-scsi: replace ide_do_drive_cmd with blk_execute_rq_nowait
All the callers of ide_do_drive_cmd() except for ide-scsi use
ide_preempt action argument. This converts ide-scsi to use
blk_execute_rq_nowait instead of ide_do_drive_cmd so that we can
remove the action argument in ide_do_drive_cmd and ide_action_t
typedef.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:50 +02:00
Bartlomiej Zolnierkiewicz
f8c4bd0ab2 ide: pass 'hwif *' instead of 'drive *' to ->OUTBSYNC method
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:49 +02:00
Bartlomiej Zolnierkiewicz
9a410e79b5 ide: remove IDE_TFLAG_NO_SELECT_MASK taskfile flag
Always call SELECT_MASK(..., 0) in ide_tf_load() (needs to be done
to match ide_set_irq(..., 1)) and then remove IDE_TFLAG_NO_SELECT_MASK
taskfile flag.

This change should only affect hpt366 and icside host drivers since
->maskproc(..., 0) for sgiioc4 is equivalent to ide_set_irq(..., 1).

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:48 +02:00
FUJITA Tomonori
124cafc5eb ide: remove ide_init_drive_cmd
ide_init_drive_cmd just calls blk_rq_init. This converts the users of
ide_init_drive_cmd to use blk_rq_init directly and removes
ide_init_drive_cmd.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:44 +02:00
Bartlomiej Zolnierkiewicz
e8a96aa713 ide: set REQ_PREEMPT request flag in ide_do_drive_cmd() users
* Set REQ_PREEMPT request flag in ide_do_drive_cmd() users
  for ide_preempt and ide_head_wait action types.

* Remove setting REQ_PREEMPT from ide_do_drive_cmd().

While at it:

* Set 'where' variable outside ide_lock.

This is a preparation for converting IDE to use blk_execute_rq().

There should be no functional changes caused by this patch.

Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15 21:21:41 +02:00
Linus Torvalds
5a86102248 Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6
* 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6: (64 commits)
  firmware: convert sb16_csp driver to use firmware loader exclusively
  dsp56k: use request_firmware
  edgeport-ti: use request_firmware()
  edgeport: use request_firmware()
  vicam: use request_firmware()
  dabusb: use request_firmware()
  cpia2: use request_firmware()
  ip2: use request_firmware()
  firmware: convert Ambassador ATM driver to request_firmware()
  whiteheat: use request_firmware()
  ti_usb_3410_5052: use request_firmware()
  emi62: use request_firmware()
  emi26: use request_firmware()
  keyspan_pda: use request_firmware()
  keyspan: use request_firmware()
  ttusb-budget: use request_firmware()
  kaweth: use request_firmware()
  smctr: use request_firmware()
  firmware: convert ymfpci driver to use firmware loader exclusively
  firmware: convert maestro3 driver to use firmware loader exclusively
  ...

Fix up trivial conflicts with BKL removal in drivers/char/dsp56k.c and
drivers/char/ip2/ip2main.c manually.
2008-07-14 16:54:07 -07:00
Linus Torvalds
85082fd7cb Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (241 commits)
  [ARM] 5171/1: ep93xx: fix compilation of modules using clocks
  [ARM] 5133/2: at91sam9g20 defconfig file
  [ARM] 5130/4: Support for the at91sam9g20
  [ARM] 5160/1: IOP3XX: gpio/gpiolib support
  [ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits.
  [ARM] 5084/1: zylonite: Register AC97 device
  [ARM] 5085/2: PXA: Move AC97 over to the new central device declaration model
  [ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers
  [ARM] 5147/1: pxaficp_ir: drop pxa_gpio_mode calls, as pin setting
  [ARM] 5145/1: PXA2xx: provide api to control IrDA pins state
  [ARM] 5144/1: pxaficp_ir: cleanup includes
  [ARM] pxa: remove pxa_set_cken()
  [ARM] pxa: allow clk aliases
  [ARM] Feroceon: don't disable BPU on boot
  [ARM] Orion: LED support for HP mv2120
  [ARM] Orion: add RD88F5181L-FXO support
  [ARM] Orion: add RD88F5181L-GE support
  [ARM] Orion: add Netgear WNR854T support
  [ARM] s3c2410_defconfig: update for current build
  [ARM] Acer n30: Minor style and indentation fixes.
  ...
2008-07-14 16:06:58 -07:00