Граф коммитов

67 Коммитов

Автор SHA1 Сообщение Дата
Sergey Shtylyov 171a93182e ata: pata_legacy: fix pdc20230_set_piomode()
Clang gives a warning when compiling pata_legacy.c with 'make W=1' about
the 'rt' local variable in pdc20230_set_piomode() being set but unused.
Quite obviously, there is an outb() call missing to write back the updated
variable. Moreover, checking the docs by Petr Soucek revealed that bitwise
AND should have been done with a negated timing mask and the master/slave
timing masks were swapped while updating...

Fixes: 669a5db411 ("[libata] Add a bunch of PATA drivers.")
Reported-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2022-10-31 20:27:27 +09:00
Dan Carpenter 013923477c pata_legacy: fix a couple uninitialized variable bugs
The last byte of "pad" is used without being initialized.

Fixes: 55dba3120f ("libata: update ->data_xfer hook for ATAPI")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2021-10-12 09:52:35 +09:00
Maciej W. Rozycki 7d33004d24 pata_legacy: Add `probe_mask' parameter like with ide-generic
Carry the `probe_mask' parameter over from ide-generic to pata_legacy so
that there is a way to prevent random poking at ISA port I/O locations
in attempt to discover adapter option cards with libata like with the
old IDE driver.  By default all enabled locations are tried, however it
may interfere with a different kind of hardware responding there.

For example with a plain (E)ISA system the driver tries all the six
possible locations:

scsi host0: pata_legacy
ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
ata1.00: ATA-4: ST310211A, 3.54, max UDMA/100
ata1.00: 19541088 sectors, multi 16: LBA
ata1.00: configured for PIO
scsi 0:0:0:0: Direct-Access     ATA      ST310211A        3.54 PQ: 0 ANSI: 5
scsi 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] 19541088 512-byte logical blocks: (10.0 GB/9.32 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
scsi host1: pata_legacy
ata2: PATA max PIO4 cmd 0x170 ctl 0x376 irq 15
scsi host1: pata_legacy
ata3: PATA max PIO4 cmd 0x1e8 ctl 0x3ee irq 11
scsi host1: pata_legacy
ata4: PATA max PIO4 cmd 0x168 ctl 0x36e irq 10
scsi host1: pata_legacy
ata5: PATA max PIO4 cmd 0x1e0 ctl 0x3e6 irq 8
scsi host1: pata_legacy
ata6: PATA max PIO4 cmd 0x160 ctl 0x366 irq 12

however giving the kernel "pata_legacy.probe_mask=21" makes it try every
other location only:

scsi host0: pata_legacy
ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
ata1.00: ATA-4: ST310211A, 3.54, max UDMA/100
ata1.00: 19541088 sectors, multi 16: LBA
ata1.00: configured for PIO
scsi 0:0:0:0: Direct-Access     ATA      ST310211A        3.54 PQ: 0 ANSI: 5
scsi 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] 19541088 512-byte logical blocks: (10.0 GB/9.32 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
scsi host1: pata_legacy
ata2: PATA max PIO4 cmd 0x1e8 ctl 0x3ee irq 11
scsi host1: pata_legacy
ata3: PATA max PIO4 cmd 0x1e0 ctl 0x3e6 irq 8

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2103211800110.21463@angie.orcam.me.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-06 09:27:30 -06:00
Maciej W. Rozycki 426e2c6a2c pata_legacy: Properly document module parameters
Most pata_legacy module parameters lack MODULE_PARM_DESC documentation
and none is described in kernel-parameters.txt.  Also several comments
are inaccurate or wrong.

Add the missing documentation pieces then and reorder parameters into a
consistent block.  Remove inaccuracies as follows:

- `all' affects primary and secondary port ranges only rather than all,

- `probe_all' affects tertiary and further port ranges rather than all,

- `ht6560b' is for HT 6560B rather than HT 6560A.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2103211909560.21463@angie.orcam.me.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-06 09:27:30 -06:00
Lee Jones 145f74fa62 ata: pata_legacy: Repair a couple kernel-doc problems
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_legacy.c:606: warning: expecting prototype for opt82c465mv_qc_issue(). Prototype was for opti82c46x_qc_issue() instead
 drivers/ata/pata_legacy.c:933: warning: Function parameter or member 'probe' not described in 'legacy_init_one'
 drivers/ata/pata_legacy.c:933: warning: Excess function parameter 'pl' description in 'legacy_init_one'
 drivers/ata/pata_legacy.c:1024: warning: Function parameter or member 'primary' not described in 'legacy_check_special_cases'
 drivers/ata/pata_legacy.c:1024: warning: Function parameter or member 'secondary' not described in 'legacy_check_special_cases'
 drivers/ata/pata_legacy.c:1024: warning: Excess function parameter 'master' description in 'legacy_check_special_cases'
 drivers/ata/pata_legacy.c:1024: warning: Excess function parameter 'master' description in 'legacy_check_special_cases'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Colten Edwards <pje120@cs.usask.ca>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210318085150.3131936-12-lee.jones@linaro.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-30 20:21:26 -06:00
Thomas Gleixner c82ee6d3be treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 or at your option any
  later version this program is distributed in the hope that it will
  be useful but without any warranty without even the implied warranty
  of merchantability or fitness for a particular purpose see the gnu
  general public license for more details you should have received a
  copy of the gnu general public license along with this program see
  the file copying if not write to the free software foundation 675
  mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 52 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154042.342335923@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:46 +02:00
Sebastian Andrzej Siewior 23ebda2fc7 libata: remove ata_sff_data_xfer_noirq()
ata_sff_data_xfer_noirq() is invoked via the ->sff_data_xfer hook. The
latter is invoked by ata_pio_sector(), atapi_send_cdb() and
__atapi_pio_bytes() which in turn is invoked by ata_sff_hsm_move().
The latter function requires that the "ap->lock" lock is held which
needs to be taken with disabled interrupts.

There is no need have to have ata_sff_data_xfer_noirq() which invokes
ata_sff_data_xfer32() with disabled interrupts because at this point the
interrupts are already disabled.
Remove the function and its references to it and replace all callers
with ata_sff_data_xfer32().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2018-07-11 10:45:28 -07:00
Bartlomiej Zolnierkiewicz 989e0aac1a ata: pass queued command to ->sff_data_xfer method
For Atari Falcon PATA support we need to check the current command
in its ->sff_data_xfer method.  Update core code and all users
accordingly.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10 11:11:17 -05:00
Silvan Jegen e853a4e01f pata_legacy: Remove dead code
The current flow of control prevents this function from being
called. Let's remove the call.

Signed-off-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-11 08:30:53 -04:00
Dan Carpenter e0044c9822 pata_legacy: bogus clock in opti82c46x_set_piomode()
"sysclk" is used as an index into a 4 element array.  My static
checker complains because it can be out of bounds.  From the
context, it looks like there is a right bit shift missing.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2013-04-03 19:53:10 -04:00
Sergei Shtylyov 9716387311 pata_legacy: correctly mask recovery field for HT6560B
According to the HT6560H datasheet, the recovery timing field is 4-bit wide,
with a value of 0 meaning 16 cycles. Correct obvious thinko in the recovery
field mask.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-03-13 12:43:13 -04:00
Bartlomiej Zolnierkiewicz b2f104bba3 pata_legacy: use PIO mask defines
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-10-14 13:27:23 -04:00
Bartlomiej Zolnierkiewicz 8c7e8f947f pata_legacy: unify QDI ->set_piomode methods
Add controller type field to struct legacy_data and then use it
to merge together all ->set_piomode methods for QDI controllers.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-10-14 13:27:03 -04:00
Bartlomiej Zolnierkiewicz 0dcd0a7637 libata: remove no longer needed pata_qdi driver
QDI65x0 controllers are fully supported by pata_legacy driver
so remove no longer needed pata_qdi driver.

Leave PATA_QDI config option for compatibility reasons and teach
pata_legacy to preserve the old behavior of pata_qdi driver.

Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-10-14 13:25:24 -04:00
Joe Perches a9a79dfec2 ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
Saves text by removing nearly duplicated text format strings by
creating ata_<foo>_printk functions and printf extension %pV.

ata defconfig size shrinks ~5% (~8KB), allyesconfig ~2.5% (~13KB)

Format string duplication comes from:

 #define ata_link_printk(link, lv, fmt, args...) do { \
       if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link)    \
               printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id,   \
                      (link)->pmp , ##args); \
       else \
               printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
       } while(0)

Coalesce long formats.

$ size drivers/ata/built-in.*
   text	   data	    bss	    dec	    hex	filename
 544969	  73893	 116584	 735446	  b38d6	drivers/ata/built-in.allyesconfig.ata.o
 558429	  73893	 117864	 750186	  b726a	drivers/ata/built-in.allyesconfig.dev_level.o
 141328	  14689	   4220	 160237	  271ed	drivers/ata/built-in.defconfig.ata.o
 149567	  14689	   4220	 168476	  2921c	drivers/ata/built-in.defconfig.dev_level.o

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-07-23 17:57:36 -04:00
Tejun Heo f60215a130 pata_legacy: fix CONFIG_PATA_WINBOND_VLB_MODULE test
pata_legacy is incorrectly testing PATA_WINBOND_VLB_MODULE instead of
CONFIG_PATA_WINBOND_VLB_MODULE.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: "Robert P. J. Day" <rpjday@crashcourse.ca>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-11-12 17:10:53 -05:00
Bartlomiej Zolnierkiewicz 6d981b9a91 libata: remove no longer needed pata_winbond driver
Winbond W83759A controller is fully supported by pata_legacy driver
so remove no longer needed pata_winbond driver.

Leave PATA_WINBOND_VLB config option for compatibility reasons
and teach pata_legacy to preserve the old behavior of pata_winbond
driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-08-25 19:24:15 -04:00
Bartlomiej Zolnierkiewicz 9c7e0d22c5 pata_legacy: add pointers to QDI65x0 documentation
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:47 -05:00
Bartlomiej Zolnierkiewicz 6809e7301f pata_legacy: fix access to control register for QDI6580
We need to mask out the port offset from the port number
cached in ld_qdi->timing.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:14 -05:00
Bartlomiej Zolnierkiewicz 43c7d17ee7 pata_legacy: fix QDI6580DP support
Dual port QDI6580 has shared PIO timings for master/slave
devices so it needs to use custom ->qc_issue method.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:00 -05:00
James Bottomley 45bc955bb1 pata_legacy: wait for async probing
The basic problem here that pata_legacy attaches the host, sees if it found
any devices and detaches it if none were found.  With async probing, it's not
waiting until discovery is finished before deciding it has no devices and
trying the detach leading to this warning:

ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
------------[ cut here ]------------
WARNING: at drivers/ata/libata-core.c:6222 ata_host_detach+0x75/0x90()
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.30-rc7 #1
Call Trace:
 [<c01fbb05>] ? ata_host_detach+0x75/0x90
 [<c01fbb05>] ? ata_host_detach+0x75/0x90
 [<c01139b5>] ? warn_slowpath_common+0x45/0x80
 [<c01139fa>] ? warn_slowpath_null+0xa/0x10
 [<c01fbb05>] ? ata_host_detach+0x75/0x90
 [<c02f40e0>] ? legacy_init+0x44e/0x87f
 [<c02f3c92>] ? legacy_init+0x0/0x87f
 [<c0101021>] ? _stext+0x21/0x140
 [<c01890ff>] ? proc_register+0x2f/0x190
 [<c018938c>] ? create_proc_entry+0x5c/0xc0
 [<c0135ebe>] ? register_irq_proc+0x6e/0x90
 [<c02e6484>] ? kernel_init+0x6e/0xbf
 [<c02e6416>] ? kernel_init+0x0/0xbf
 [<c01031d7>] ? kernel_thread_helper+0x7/0x10
---[ end trace ef1ee36e873ae3a0 ]---

Because it detaches before the probe is complete.

One way to fix it would be to put an async_synchronize_full() before looking
for devices, which this patch does.  A better way might be to separate libata
into its own domain and only wait for that.

Reported-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-06-05 14:40:46 -04:00
Zhenwen Xu 16e6aeca9e [libata] fix build error on drivers/ata/pata_legacy.c
fix those errors:

drivers/ata/pata_legacy.c: In function ‘pdc_data_xfer_vlb’:
drivers/ata/pata_legacy.c:289: error: ‘ap’ undeclared (first use in this function)
drivers/ata/pata_legacy.c:289: error: (Each undeclared identifier is reported only once
drivers/ata/pata_legacy.c:289: error: for each function it appears in.)
drivers/ata/pata_legacy.c: At top level:
drivers/ata/pata_legacy.c:869: error: ‘ATA_PFLAG_PIO32_CHANGE’ undeclared here (not in a
+function)
make[2]: *** [drivers/ata/pata_legacy.o] Error 1
make[1]: *** [drivers/ata] Error 2

Signed-off-by: Zhenwen Xu <helight.xu@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-17 19:05:33 -04:00
Alan Cox e3cf95dd6d ata: Report 16/32bit PIO as best we can
The legacy old IDE ioctl API for this is a bit primitive so we try
and map stuff sensibly onto it.

- Set PIO over DMA devices to report 32bit
- Add ability to change the PIO32 settings if the controller permits it
- Add that functionality into the sff drivers
- Add that functionality into the VLB legacy driver
- Turn on the 32bit PIO on the ninja32 and add support there

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16 15:28:23 -04:00
Tejun Heo 20cbf5f8c0 pata_legacy: fix no device fail path
When pata_legacy can't detect any device, it unregisters the
platform_device and fails detection.  However, it forgets to detach
ata host triggering weird failures as the host later gets freed by
devres while still attached.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16 15:21:22 -04:00
Erik Inge Bolsø 14bdef982c [libata] convert drivers to use ata.h mode mask defines
No functional changes in this patch.

Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-03-24 22:13:27 -04:00
Alan Cox c55af1f5ab [libata] pata_legacy: for VLB 32bit PIO don't try tricks with slop
These devices are generally used with ATA anyway and it seems that some
ATAPI will need us to issue the right number of words.  Therefore as we
can't switch mid burst on VLB devices we should only use 32bit I/O for
suitable block sizes.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-25 15:30:23 -05:00
Qinghuang Feng bd353ffdc9 [libata] Update kernel-doc comments to match source code
Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
2008-12-28 22:43:21 -05:00
Tejun Heo 1eca4365be libata: beef up iterators
There currently are the following looping constructs.

* __ata_port_for_each_link() for all available links
* ata_port_for_each_link() for edge links
* ata_link_for_each_dev() for all devices
* ata_link_for_each_dev_reverse() for all devices in reverse order

Now there's a need for looping construct which is similar to
__ata_port_for_each_link() but iterates over PMP links before the host
link.  Instead of adding another one with long name, do the following
cleanup.

* Implement and export ata_link_next() and ata_dev_next() which take
  @mode parameter and can be used to build custom loop.
* Implement ata_for_each_link() and ata_for_each_dev() which take
  looping mode explicitly.

The following iteration modes are implemented.

* ATA_LITER_EDGE		: loop over edge links
* ATA_LITER_HOST_FIRST		: loop over all links, host link first
* ATA_LITER_PMP_FIRST		: loop over all links, PMP links first

* ATA_DITER_ENABLED		: loop over enabled devices
* ATA_DITER_ENABLED_REVERSE	: loop over enabled devices in reverse order
* ATA_DITER_ALL			: loop over all devices
* ATA_DITER_ALL_REVERSE		: loop over all devices in reverse order

This change removes exlicit device enabledness checks from many loops
and makes it clear which ones are iterated over in which direction.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-28 22:43:20 -05:00
Alan Cox ab77163008 ata: Switch all my stuff to a common address
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27 23:54:50 -04:00
Harvey Harrison 6ad67403da ata: endianness annotations in pata drivers
drivers/ata/pata_qdi.c:142:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_qdi.c:142:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_qdi.c:142:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_qdi.c:146:15: warning: cast to restricted __le32

drivers/ata/pata_winbond.c:110:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_winbond.c:110:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_winbond.c:110:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_winbond.c:114:15: warning: cast to restricted __le32

drivers/ata/pata_legacy.c:310:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:310:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_legacy.c:310:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_legacy.c:314:15: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:752:11: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:756:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:756:9:    expected unsigned int [unsigned] [addressable] [assigned] [usertype] pad
drivers/ata/pata_legacy.c:756:9:    got restricted __le32 [usertype] <noident>

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-14 15:59:33 -04:00
Harvey Harrison 07633b5d07 ata: remove FIT() macro
Use the kernel-provided clamp_val() macro.

FIT was always applied to a member of struct ata_timing (unsigned short)
and two constants.  clamp_val will not cast to short anymore.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19 17:30:32 -04:00
Tejun Heo 5682ed33aa libata: rename SFF port ops
Add sff_ prefix to SFF specific port ops.

This rename is in preparation of separating SFF support out of libata
core layer.  This patch strictly renames ops and doesn't introduce any
behavior difference.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:22 -04:00
Tejun Heo 9363c3825e libata: rename SFF functions
SFF functions have confusing names.  Some have sff prefix, some have
bmdma, some std, some pci and some none.  Unify the naming by...

* SFF functions which are common to both BMDMA and non-BMDMA are
  prefixed with ata_sff_.

* SFF functions which are specific to BMDMA are prefixed with
  ata_bmdma_.

* SFF functions which are specific to PCI but apply to both BMDMA and
  non-BMDMA are prefixed with ata_pci_sff_.

* SFF functions which are specific to PCI and BMDMA are prefixed with
  ata_pci_bmdma_.

* Drop generic prefixes from LLD specific routines.  For example,
  bfin_std_dev_select -> bfin_dev_select.

The following renames are noteworthy.

  ata_qc_issue_prot() -> ata_sff_qc_issue()
  ata_pci_default_filter() -> ata_bmdma_mode_filter()
  ata_dev_try_classify() -> ata_sff_dev_classify()

This rename is in preparation of separating SFF support out of libata
core layer.  This patch strictly renames functions and doesn't
introduce any behavior difference.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:21 -04:00
Tejun Heo 029cfd6b74 libata: implement and use ops inheritance
libata lets low level drivers build ata_port_operations table and
register it with libata core layer.  This allows low level drivers
high level of flexibility but also burdens them with lots of
boilerplate entries.

This becomes worse for drivers which support related similar
controllers which differ slightly.  They share most of the operations
except for a few.  However, the driver still needs to list all
operations for each variant.  This results in large number of
duplicate entries, which is not only inefficient but also error-prone
as it becomes very difficult to tell what the actual differences are.

This duplicate boilerplates all over the low level drivers also make
updating the core layer exteremely difficult and error-prone.  When
compounded with multi-branched development model, it ends up
accumulating inconsistencies over time.  Some of those inconsistencies
cause immediate problems and fixed.  Others just remain there dormant
making maintenance increasingly difficult.

To rectify the problem, this patch implements ata_port_operations
inheritance.  To allow LLDs to easily re-use their own ops tables
overriding only specific methods, this patch implements poor man's
class inheritance.  An ops table has ->inherits field which can be set
to any ops table as long as it doesn't create a loop.  When the host
is started, the inheritance chain is followed and any operation which
isn't specified is taken from the nearest ancestor which has it
specified.  This operation is called finalization and done only once
per an ops table and the LLD doesn't have to do anything special about
it other than making the ops table non-const such that libata can
update it.

libata provides four base ops tables lower drivers can inherit from -
base, sata, pmp, sff and bmdma.  To avoid overriding these ops
accidentaly, these ops are declared const and LLDs should always
inherit these instead of using them directly.

After finalization, all the ops table are identical before and after
the patch except for setting .irq_handler to ata_interrupt in drivers
which didn't use to.  The .irq_handler doesn't have any actual effect
and the field will soon be removed by later patch.

* sata_sx4 is still using old style EH and currently doesn't take
  advantage of ops inheritance.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:17 -04:00
Tejun Heo 68d1d07b51 libata: implement and use SHT initializers
libata lets low level drivers build scsi_host_template and register it
to the SCSI layer.  This allows low level drivers high level of
flexibility but also burdens them with lots of boilerplate entries.

This patch implements SHT initializers which can be used to initialize
all the boilerplate entries in a sht.  Three variants of them are
implemented - BASE, BMDMA and NCQ - for different types of drivers.
Note that entries can be overriden by putting individual initializers
after the helper macro.

All sht tables are identical before and after this patch.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:17 -04:00
Tejun Heo 358f9a77a6 libata: implement and use ata_noop_irq_clear()
->irq_clear() is used to clear IRQ bit of a SFF controller and isn't
useful for drivers which don't use libata SFF HSM implementation.
However, it's a required callback and many drivers implement their own
noop version as placeholder.  This patch implements ata_noop_irq_clear
and use it to replace those custom placeholders.

Also, SFF drivers which don't support BMDMA don't need to use
ata_bmdma_irq_clear().  It becomes noop if BMDMA address isn't
initialized.  Convert them to use ata_noop_irq_clear().

Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17 15:44:16 -04:00
Harvey Harrison cb616dd5bb ata: fix sparse warnings in pata_legacy.c
Use ld_qdi and ld_winbond to avoid shadowing static int
variables qdi and winbond.  The ld_ prefix refers to
legacy_data.

drivers/ata/pata_legacy.c:777:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:811:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:848:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:882:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:1040:21: warning: symbol 'winbond' shadows an earlier one
drivers/ata/pata_legacy.c:129:12: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-20 12:08:15 -05:00
Tejun Heo 7a3a16fe7d pata_legacy: don't call ata_host_detach() after initialization failure
ata_host_detach() detaches an attached port and shouldn't be called on
a port which hasn't been attached yet.  pata_legacy incorrectly calls
ata_host_detach() on unattached port after initialization failure
causing oops.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-15 13:51:12 -05:00
Alan Cox 8397248d46 pata_legacy: typo fix
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-11 14:30:06 -05:00
Alan Cox b832548773 pata_legacy: Merge winbond support
This puts winbond VLB in with the other ISA/VLB support and means we can
lose pata_winbond.c. With all the VLB/ISA probe in one space (and out of
the core libata) this makes legacy probing work sanely.

Also switch to devm_ for resource handling on the ports post probe

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-23 05:24:17 -05:00
Alan Cox defc9cd826 pata_legacy: resychronize with upstream changes and resubmit
Update the legacy driver so it can handle VLB ports nicely, and has an
internal structure for nailing new ISA/VLB forms in.  Anyone got an ALI14xx
and a spare day ;)

Also adds an "all" parameter so you can load this driver after all the PCI
ones in a boot time kernel and tell it to grab anything ST412 compatible
even if it is an unknown PCI device.  That allows libata to offer the same
"just get me a disk somehow" fallback that old IDE did.

Obsoletes pata_qdi.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-23 05:24:16 -05:00
Andrew Morton c294f1b329 [libata] pata_legacy: typo fix
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-23 05:24:16 -05:00
Tejun Heo 55dba3120f libata: update ->data_xfer hook for ATAPI
Depending on how many bytes are transferred as a unit, PIO data
transfer may consume more bytes than requested.  Knowing how much
data is consumed is necessary to determine how much is left for
draining.  This patch update ->data_xfer such that it returns the
number of consumed bytes.

While at it, it also makes the following changes.

* s/adev/dev/
* use READ/WRITE constants for rw indication
* misc clean ups

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-23 05:24:14 -05:00
Al Viro b50e56d81e libata fixes for sparse-found problems
In pata_legacy and pata_winbond we've got bugs - cpu_to_le16() instead
of cpu_to_le32().  Fortunately, both affected suckers are VLB, thus
l-e-only, so we might get away with that unless we hit it with slop == 3
(hadn't checked if playing with badly aligned sg could trigger that).
Still buggy...  Moreover, pata_legacy, pata_winbond and pata_qdi forgot to
initialize pad on the write side of 32bit case in their ->data_xfer().
Hopefully the hardware does't care, but still, sending uninitialized
data to it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-15 15:58:36 -05:00
Tejun Heo cbcdd87593 libata: implement and use ata_port_desc() to report port configuration
Currently, port configuration reporting has the following problems.

* iomapped address is reported instead of raw address
* report contains irrelevant fields or lacks necessary fields for
  non-SFF controllers.
* host->irq/irq2 are there just for reporting and hacky.

This patch implements and uses ata_port_desc() and
ata_port_pbar_desc().  ata_port_desc() is almost identical to
ata_ehi_push_desc() except that it takes @ap instead of @ehi, has no
locking requirement, can only be used during host initialization and "
" is used as separator instead of ", ".  ata_port_pbar_desc() is a
helper to ease reporting of a PCI BAR or an offsetted address into it.

LLD pushes whatever description it wants using the above two
functions.  The accumulated description is printed on host
registration after "[S/P]ATA max MAX_XFERMODE ".

SFF init helpers and ata_host_activate() automatically add
descriptions for addresses and irq respectively, so only LLDs which
isn't standard SFF need to add custom descriptions.  In many cases,
such controllers need to report different things anyway.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:37 -04:00
Jeff Garzik ac8869d56d [libata] Remove ->port_disable() hook
It was always set to ata_port_disable().  Removed the hook, and replaced
the very few ap->ops->port_disable() callsites with direct calls to
ata_port_disable().

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:35 -04:00
Jeff Garzik 6d32d30f55 [libata] Remove ->irq_ack() hook, and ata_dummy_irq_on()
* ->irq_ack() is redundant to what the irq handler already
  performs... chk-status + irq-clear.  Furthermore, it is only
  called in one place, when screaming-irq-debugging is enabled,
  so we don't want to bother with a hook just for that.

* ata_dummy_irq_on() is only ever used in drivers that have
  no callpath reaching ->irq_on().  Remove .irq_on hook from
  those drivers, and the now-unused ata_dummy_irq_on()

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:34 -04:00
Tejun Heo 0260731f01 libata-link: linkify config/EH related functions
Make the following functions deal with ata_link instead of ata_port.

* ata_set_mode()
* ata_eh_autopsy() and related functions
* ata_eh_report() and related functions
* suspend/resume related functions
* ata_eh_recover() and related functions

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:31 -04:00
Tejun Heo f58229f806 libata-link: implement and use link/device iterators
Multiple links and different number of devices per link should be
considered to iterate over links and devices.  This patch implements
and uses link and device iterators - ata_port_for_each_link() and
ata_link_for_each_dev() - and ata_link_max_devices().

This change makes a lot of functions iterate over only possible
devices instead of from dev 0 to dev ATA_MAX_DEVICES.  All such
changes have been examined and nothing should be broken.

While at it, add a separating comment before device helpers to
distinguish them better from link helpers and others.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:30 -04:00
Tejun Heo 9af5c9c97d libata-link: introduce ata_link
Introduce ata_link.  It abstracts PHY and sits between ata_port and
ata_device.  This new level of abstraction is necessary to support
SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
a ATA host port.  Fields related to command execution, spd_limit and
EH are per-link and thus moved to ata_link.

This patch only defines the host link.  Multiple link handling will be
added later.  Also, a lot of ap->link derefences are added but many of
them will be removed as each part is converted to deal directly with
ata_link instead of ata_port.

This patch introduces no behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:30 -04:00