Commit Graph

43 Commits

Author SHA1 Message Date
Harvey Harrison 48e1f800ea ata: fix sparse warning in sata_via.c
drivers/ata/sata_via.c:336:2: warning: returning void-valued expression

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-15 13:51:01 -05:00
Alejandro Riveira Fernández 4f743d1d22 sata_via.c: Remove missleading comment.
Maybe for the trivial tree...

sata_via.c has PATA support since:

  d73f30e1c9

  sata_via: PATA support

AFAICS so the TODO list is no longer true.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-06 07:00:33 -05:00
Jeff Garzik 5796d1c4c8 [libata] Address some checkpatch-spotted issues
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-29 06:15:27 -04:00
Al Viro b4482a4b2e more trivial signedness fixes in drivers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-14 12:41:52 -07:00
Tejun Heo b6d6c74628 sata_via: kill SATA_PATA_SHARING register handling
The SATA_PATA_SHARING register doesn't have anything to do with the
SATA part of the controller.  It indicates whether an extern SATA PHY
is attached to the PATA part of the controller and if so how it is
wired.  As the PATA part is driven by pata_via, sata_via has no reason
to care about that.  Also, pata_via should work fine under all
configurations.

This patch removes unnecessary attach failures.  It seems recent via
chipsets are defaulting to different values or are actually connected
to SATA PHY triggering this more often.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:42 -04:00
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 cc0680a580 libata-link: linkify reset
Make reset methods and related functions deal with ata_link instead of
ata_port.

* ata_do_reset()
* ata_eh_reset()
* all prereset/reset/postreset methods and related functions

This patch introduces no behavior change.

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 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
Ondrej Zary b4154d4a01 Fix sata_via write errors on PATA drive connected to VT6421
I think that I've found and fixed the problem. There is a copy/paste bug in
vt6421_set_dma_mode() function which causes wrong values to be written to
PATA_UDMA_TIMING register.

This patch fixes a copy/paste bug that breaks DMA modes on VT6421 PATA port.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-01 06:52:18 -04:00
Jeff Garzik 2a3103ce43 [libata] Bump driver versions
Bump the versions for drivers that were modified, but had not already
had a version number bump.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 04:54:06 -04:00
Tejun Heo da3dbb17a0 libata: make ->scr_read/write callbacks return error code
Convert ->scr_read/write callbacks to return error code to better
indicate failure.  This will help handling of SCR_NOTIFICATION.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 08:02:11 -04:00
Tejun Heo d583bc1881 libata: simplify PCI legacy SFF host handling
With PCI resource fix up for legacy hosts.  We can use the same code
path to allocate IO resources and initialize host for both legacy and
native SFF hosts.  Only IRQ requesting needs to be different.

Rename ata_pci_*_native_host() to ata_pci_*_sff_host(), kill all
legacy specific functions and use the renamed functions instead.  This
simplifies code a lot.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-10 21:27:09 -04:00
Jeff Garzik bf6263a853 [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info
The ATA_UDMAx masks are self-documenting, and far better than manually
writing in the hex mask.

Note that pata_it8213 mask differed from the comment.  Added a FIXME there.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-09 12:17:35 -04:00
Jeff Garzik a09060ffe5 [libata] sata_sx4, sata_via: minor documentation updates
sata_sx4:
- describe overall driver theory of operation
- add a few constants that will be used in the future

sata_via:
- remove mention of an old-EH function that is going away

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-09 12:17:33 -04:00
Jeff Garzik 52df0ee07c [libata] sata_via, pata_via: Add PCI IDs.
Supplied by VIA.

Also, convert named constants to hex values in the pata_via
PCI ID table.  (standard libata policy for PCI device IDs, which are
considered simply arbitrary hex numbers, without a need to create a
single-use constant in linux/pci_ids.h)

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-25 05:02:06 -04:00
Jeff Garzik 8bc3fc470e libata: bump versions
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-21 20:26:38 -04:00
Tejun Heo 8fd7d1b16e sata_via: pcim_iomap_regions() conversion missed BAR5
pcim_iomap_regions() conversion missed BAR5.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-17 20:57:38 -04:00
Andrew Morton 1d30c33d8d git-libata-all: sata_via build fix
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>
2007-05-11 18:16:00 -04:00
Tejun Heo 1626aeb881 libata: clean up SFF init mess
The intention of using port_mask in SFF init helpers was to eventually
support exoctic configurations such as combination of legacy and
native port on the same controller.  This never became actually
necessary and the related code always has been subtly broken one way
or the other.  Now that new init model is in place, there is no reason
to make common helpers capable of handling all corner cases.  Exotic
cases can simply dealt within LLDs as necessary.

This patch removes port_mask handling in SFF init helpers.  SFF init
helpers don't take n_ports argument and interpret it into port_mask
anymore.  All information is carried via port_info.  n_ports argument
is dropped and always two ports are allocated.  LLD can tell SFF to
skip certain port by marking it dummy.  Note that SFF code has been
treating unuvailable ports this way for a long time until recent
breakage fix from Linus and is consistent with how other drivers
handle with unavailable ports.

This fixes 1-port legacy host handling still broken after the recent
native mode fix and simplifies SFF init logic.  The following changes
are made...

* ata_pci_init_native_host() and ata_init_legacy_host() both now try
  to initialized whatever they can and mark failed ports dummy.  They
  return 0 if any port is successfully initialized.

* ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't
  take n_ports argument.  All info should be specified via port_info
  array.  Always two ports are allocated.

* ata_pci_init_bmdma() exported to be used by LLDs in exotic cases.

* port_info handling in all LLDs are standardized - all port_info
  arrays are const stack variable named ppi.  Unless the second port
  is different from the first, its port_info is specified as NULL
  (tells libata that it's identical to the last non-NULL port_info).

* pata_hpt37x/hpt3x2n: don't modify static variable directly.  Make an
  on-stack copy instead as ata_piix does.

* pata_uli: It has 4 ports instead of 2.  Don't use
  ata_pci_prepare_native_host().  Allocate the host explicitly and use
  init helpers.  It's simple enough.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-11 18:09:18 -04:00
Tejun Heo e1e143cf97 sata_via: add missing PM hooks
For some reason, sata_via is missing PM hooks.  Add them.  Spotted by
Jeroen Janssen <jeroen.janssen@gmail.com>.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jeroen Janssen <jeroen.janssen@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-09 20:15:46 -04:00
Tejun Heo d4b2bab4f2 libata: add deadline support to prereset and reset methods
Add @deadline to prereset and reset methods and make them honor it.
ata_wait_ready() which directly takes @deadline is implemented to be
used as the wait function.  This patch is in preparation for EH timing
improvements.

* ata_wait_ready() never does busy sleep.  It's only used from EH and
  no wait in EH is that urgent.  This function also prints 'be
  patient' message automatically after 5 secs of waiting if more than
  3 secs is remaining till deadline.

* ata_bus_post_reset() now fails with error code if any of its wait
  fails.  This is important because earlier reset tries will have
  shorter timeout than the spec requires.  If a device fails to
  respond before the short timeout, reset should be retried with
  longer timeout rather than silently ignoring the device.

  There are three behavior differences.

  1. Timeout is applied to both devices at once, not separately.  This
     is more consistent with what the spec says.

  2. When a device passes devchk but fails to become ready before
     deadline.  Previouly, post_reset would just succeed and let
     device classification remove the device.  New code fails the
     reset thus causing reset retry.  After a few times, EH will give
     up disabling the port.

  3. When slave device passes devchk but fails to become accessible
     (TF-wise) after reset.  Original code disables dev1 after 30s
     timeout and continues as if the device doesn't exist, while the
     patched code fails reset.  When this happens, new code fails
     reset on whole port rather than proceeding with only the primary
     device.

  If the failing device is suffering transient problems, new code
  retries reset which is a better behavior.  If the failing device is
  actually broken, the net effect is identical to it, but not to the
  other device sharing the channel.  In the previous code, reset would
  have succeeded after 30s thus detecting the working one.  In the new
  code, reset fails and whole port gets disabled.  IMO, it's a
  pathological case anyway (broken device sharing bus with working
  one) and doesn't really matter.

* ata_bus_softreset() is changed to return error code from
  ata_bus_post_reset().  It used to return 0 unconditionally.

* Spin up waiting is to be removed and not converted to honor
  deadline.

* To be on the safe side, deadline is set to 40s for the time being.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-01 07:49:53 -04:00
Tejun Heo eca25dca17 libata: convert drivers with combined SATA/PATA ports to new init model
Convert sata_via and sata_promise to new init model.  Both controllers
can have combined configuration (SATA + PATA) and used twisted
initialization method (modifying port in ->port_start) to overcome
probe_ent limitations.

This patch converts both drivers to new init model in which such
configuration is natively supported.

* promise: Combined pata port now uses separate port_info entry right
  after the sata counterpart entry.

* promise: Controller configuration is discerned using ap->flags.
  This simplifies init path and makes it look more like other LLDs.

* via: Both SATA and PATA ports in vt6421 are represented in their
  own port_info structure.

Tested on PDC20375 (SATA150 TX2plus) [105a:3375] and PDC40775 (SATA
300 TX2plus) [105a:3d73].  Couldn't test via cuz my c3 won't boot the
current kernel.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:03 -04:00
Jeff Garzik a0fcdc0259 [libata] Update several PATA drivers for new ->cable_detect hook
All patches authored and signed-off-by Alan Cox, sent on Mar 7, 2007.
I merely combined them all into a single patch.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:56 -04:00
Jeff Garzik cb48cab7f3 [libata] bump versions
Bump versions based on changes submitted during 2.6.21 merge window.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-26 06:04:24 -05:00
Jeff Garzik a84471fe26 [libata] Trim trailing whitespace.
No code changes.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-26 05:51:33 -05:00
Tejun Heo e1be5d73e0 sata_via: fix resource-managed iomap conversion
Conversion to resource-managed iomap was buggy causing init failures
on both vt6420 and 6421 - BAR5 wasn't mapped for both controllers
while on vt6420 sata_via tried to map BAR0-4 twice.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-21 04:58:19 -05:00
Akira Iguchi 246ce3b675 libata: add another IRQ calls (libata drivers)
This patch is against each libata driver.

Two IRQ calls are added in ata_port_operations.
- irq_on() is used to enable interrupts.
- irq_ack() is used to acknowledge a device interrupt.

In most drivers, ata_irq_on() and ata_irq_ack() are used for
irq_on and irq_ack respectively.

In some drivers (ex: ahci, sata_sil24) which cannot use them
as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:38 -05:00
Tejun Heo 0d5ff56677 libata: convert to iomap
Convert libata core layer and LLDs to use iomap.

* managed iomap is used.  Pointer to pcim_iomap_table() is cached at
  host->iomap and used through out LLDs.  This basically replaces
  host->mmio_base.

* if possible, pcim_iomap_regions() is used

Most iomap operation conversions are taken from Jeff Garzik
<jgarzik@pobox.com>'s iomap branch.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:38 -05:00
Tejun Heo 24dc5f33ea libata: update libata LLDs to use devres
Update libata LLDs to use devres.  Core layer is already converted to
support managed LLDs.  This patch simplifies initialization and fixes
many resource related bugs in init failure and detach path.  For
example, all converted drivers now handle ata_device_add() failure
gracefully without excessive resource rollback code.

As most resources are released automatically on driver detach, many
drivers don't need or can do with much simpler ->{port|host}_stop().
In general, stop callbacks are need iff port or host needs to be given
commands to shut it down.  Note that freezing is enough in many cases
and ports are automatically frozen before being detached.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:37 -05:00
Alan d73f30e1c9 sata_via: PATA support
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:30 -05:00
Jeff Garzik f20b16ff7c [libata] trim trailing whitespace
Most of these contributed by that mysterious figger known as A.C.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:29 -05:00
Tejun Heo d025987217 sata_via: style clean up, no indirect method call in LLD
Call ata_bmdma_irq_clear() directly instead of through
ap->ops->irq_clear() according to libata style guideline.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-26 17:24:07 -05:00
Tejun Heo 17234246eb sata_via: don't diddle with ATA_NIEN in ->freeze
vt6420 completely loses its ability to raise IRQ for ATAPI devices if
ATA_NIEN is diddled with in ->freeze.  Further investigation is
necessary to determine whether this problem is shared on other
controllers but it doesn't seem to be at this point.

Make vt6420's ->freeze only clear IRQ to fix this problem.  This makes
vt6420 relatively more prone to IRQ storms but the controller is way
too braindamaged to worry about that anyway.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-25 17:22:47 -05:00
Luca Pedrielli 96bc103f4c sata_via: add PCI ID 0x5337
Add PCI ID 0x5337 to supported PCI ID.  This is VT8237 in IDE mode.

Signed-off-by: Luca Pedrielli <luca.pedrielli@barradev.it>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-19 19:18:49 -05:00
Jeff Garzik 68ff6e8e0e [libata] sata_via: fix obvious typo
Spotted by Martin Devera.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-11-08 07:46:02 -05:00
Jeff Garzik 2d2744fc8b [libata] PCI ID table cleanup in various drivers
* Use PCI_VDEVICE() macro
* const-ify pci_device_id table
* standardize list terminator as "{ }"
* convert spaces to tab in pci_driver struct (Alan-ism)
* various minor whitespace cleanups

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-28 20:21:59 -04:00
Jeff Garzik 29da9f6d9c [libata] Fix oops introduced in non-uniform port handling fix
Noticed by several people.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-25 21:56:33 -04:00
Jeff Garzik cca3974e48 libata: Grand renaming.
The biggest change is that ata_host_set is renamed to ata_host.

* ata_host_set			=> ata_host
* ata_probe_ent->host_flags	=> ata_probe_ent->port_flags
* ata_probe_ent->host_set_flags	=> ata_probe_ent->_host_flags
* ata_host_stats		=> ata_port_stats
* ata_port->host		=> ata_port->scsi_host
* ata_port->host_set		=> ata_port->host
* ata_port_info->host_flags	=> ata_port_info->flags
* ata_(.*)host_set(.*)\(\)	=> ata_\1host\2()

The leading underscore in ata_probe_ent->_host_flags is to avoid
reusing ->host_flags for different purpose.  Currently, the only user
of the field is libata-bmdma.c and probe_ent itself is scheduled to be
removed.

ata_port->host is reused for different purpose but this field is used
inside libata core proper and of different type.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-24 03:19:22 -04:00
Jeff Garzik 54a86bfc3d Merge branch 'upstream-fixes' into upstream 2006-08-24 02:51:38 -04:00
Jay Cliburn 08be09b7c3 [PATCH] sata_via: Add SATA support for vt8237a
This patch adds support for the VIA Technologies VT8237A SATA controller,
used, for example, on the ASUS M2V socket AM2 motherboard.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-24 02:27:50 -04:00
Jeff Garzik c6fd280766 Move libata to drivers/ata. 2006-08-10 07:31:37 -04:00