Commit Graph

226 Commits

Author SHA1 Message Date
Tejun Heo
be9a50c852 [PATCH] libata: fix ata_xfer_tbl termination
ata_xfer_tbl is terminated by entry with -1 as ->shift.  However,
->shift was unsigned int making the termination condition bogus.  This
patch converts ->shift and ->bits to int.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-31 10:14:42 -05:00
Tejun Heo
8e0e694a3a [PATCH] libata: make ata_qc_issue complete failed qcs
There is no reason for the issuer to diddle with a failed qc as the
issuer has complete control over when a qc gets freed (usually in
->complete_fn).  Make ata_qc_issue() responsible for completing qcs
which failed to issue.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-31 10:14:42 -05:00
Tejun Heo
e4a70e76ad [PATCH] libata: fix ata_qc_issue failure path
On sg_err failure path, ata_qc_issue() doesn't mark the qc active
before returning.  This triggers WARN_ON() in __ata_qc_complete() when
the qc gets completed.  This patch moves ap->active_tag and
QCFLAG_ACTIVE setting to the top of the function.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-31 10:14:42 -05:00
Albert Lee
00b6f5e9e0 [PATCH] libata: ata_dev_init_params() fixes
ata_dev_init_params() fixes:
- Get the "heads" and "sectors" parameters from caller instead of implicitly from dev->id[].
- Return AC_ERR_INVALID instead of 0 if an invalid parameter is found

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 19:30:28 -05:00
Alan Cox
17efc5f723 [PATCH] libata: Fix interesting use of "extern" and also some bracketing
Signed-off-by: Alan Cox <alan@redhat.com>

Last of the set, just clean up some oddments. Assuming the whole set is
now ok then the remaining differences are the setup of PIO_0 at reset
and the ->data_xfer method.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 19:30:28 -05:00
Alan Cox
5444a6f405 [PATCH] libata: Simplex and other mode filtering logic
Add a field to the host_set called 'flags' (was host_set_flags changed
to suit Jeff)
Add a simplex_claimed field so we can remember who owns the DMA channel
Add a ->mode_filter() hook to allow drivers to filter modes
Add docs for mode_filter and set_mode
Filter according to simplex state
Filter cable in core

This provides the needed framework to support all the mode rules found
in the PATA world. The simplex filter deals with 'to spec' simplex DMA
systems found in older chips. The cable filter avoids duplicating the
same rules in each chip driver with PATA. Finally the mode filter is
neccessary because drive/chip combinations have errata that forbid
certain modes with some drives or types of ATA object.

Drive speed setup remains per channel for now and the filters now use
the framework Tejun put into place which cleans them up a lot from the
older libata-pata patches.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 19:30:28 -05:00
Alan Cox
692785e798 [PATCH] libata - ATA is both ATA and CFA
I think this is still needed with the new probe code (which btw seems to
be missing docs in upstream ?).

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 19:30:28 -05:00
Alan Cox
e35a9e01f2 [PATCH] libata: Add ->set_mode hook for odd drivers
Some hardware doesn't want the usual mode setup logic running. This
allows the hardware driver to replace it for special cases in the least
invasive way possible.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 19:30:27 -05:00
Tejun Heo
05c8e0ac5c [PATCH] libata: kill trailing whitespace
Kill trailing whitespace.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 17:19:13 -05:00
Tejun Heo
600511e86b [PATCH] libata: add FIXME above ata_dev_xfermask()
Add FIXME above ata_dev_xfermask noting that the current
implementation limits all transfer modes to the fastest of the slowest
device on a port which isn't necessary.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 23:08:36 -05:00
Tejun Heo
298a41ca41 [PATCH] libata: cosmetic changes in ata_bus_softreset()
ata_bus_softreset() should return AC_ERR_* on failure not arbitrary
positive number.  While at it, reformat comment above it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 23:04:29 -05:00
Tejun Heo
aec5c3c1a9 [PATCH] libata: kill E.D.D.
E.D.D. has no user in-tree and mostly useless.  Kill it.  For possible
out-of-tree users, add a nice warning message and error handling if
LLDD doesn't report any useable reset mechanism (and thus tries to use
E.D.D.).

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 12:24:33 -05:00
Brian King
2f1f610b62 [PATCH] libata: Remove dependence on host_set->dev for SAS
Remove some of the dependence on the host_set struct
in preparation for supporting SAS HBAs. Adds a struct device
pointer to the ata_port struct.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 10:18:43 -05:00
Jeff Garzik
2e9edbf815 [libata] export ata_dev_pair; trim trailing whitespace
Mostly, trim trailing whitespace.

Also:
* export ata_dev_pair
* move ata_dev_classify export closer to ata_dev_pair export
2006-03-24 09:56:57 -05:00
Alan Cox
ebdfca6eb1 [PATCH] libata: add ata_dev_pair helper
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:52:32 -05:00
Nigel Cunningham
082776e4be [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE.
At the moment libata doesn't pass pm_message_t down ata_device_suspend.
This causes drives to be powered down when we just want a freeze,
causing unnecessary wear and tear. This patch gets pm_message_t passed
down so that it can be used to determine whether to power down the
drive.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 drivers/scsi/libata-core.c |    5 +++--
 drivers/scsi/libata-scsi.c |    4 ++--
 drivers/scsi/scsi_sysfs.c  |    2 +-
 include/linux/libata.h     |    4 ++--
 include/scsi/scsi_host.h   |    2 +-
 5 files changed, 9 insertions(+), 8 deletions(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:51:36 -05:00
Tejun Heo
83206a2903 [PATCH] libata: make ata_set_mode() responsible for failure handling
Make ata_set_mode() responsible for determining whether to take port
or device offline on failure.  ata_dev_set_xfermode() and
ata_dev_set_mode() indicate error to the caller instead of disabling
port directly on failure.  Also, for consistency, ata_dev_present()
check is done in ata_set_mode() instead of ata_dev_set_mode().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:39:57 -05:00
Tejun Heo
fcef978f9d [PATCH] libata: use ata_dev_disable() in ata_bus_probe()
We may or may not disable a device after ata_dev_configure() fails.
Kill 'not supported, ignoring' message in ata_dev_configure() and use
ata_dev_disable() in ata_bus_probe().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:39:57 -05:00
Tejun Heo
0b8efb0a16 [PATCH] libata: implement ata_dev_disable()
This patch implements ata_dev_disable() which prints a warning message
and takes @dev offline.  Currently, this is done by explicitly
incrementing dev->class with case-by-case warning messages.  Giving
user clear indication when libata gives up will be more important as
libata will be doing more retries.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:39:57 -05:00
Tejun Heo
1f7dd3e9d6 [PATCH] libata: check if port is disabled after internal command
libata core is being changed to disallow port/device disable on lower
layers.  However, some LLDDs (sata_mv) directly disable port on
command failure.  This patch makes ata_exec_internal() check whether a
port got disabled after an internal command.  If it is, AC_ERR_SYSTEM
is added to err_mask and the port gets re-enabled.

As internal command failure results in device disable for drivers
which don't implement newer reset/EH callbacks, this change results in
no behavior change for single device per port controllers.  For
slave-possible LLDDs which disable port on command failure, (1) such
drivers don't exist currently, (2) issuing command to the other device
of once-disabled port shouldn't result in catastrophe even if such
driver exists.  So, this should be enough as a temporary measure.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:39:57 -05:00
Tejun Heo
5a52913955 [PATCH] libata: make per-dev transfer mode limits per-dev
Now that each ata_device has xfer masks, per-dev limits can be made
per-dev instead of per-port.  Make per-dev limits per-dev.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:28:33 -05:00
Tejun Heo
acf356b12d [PATCH] libata: add per-dev pio/mwdma/udma_mask
Add per-dev pio/mwdma/udma_mask.  All transfer mode limits used to be
applied to ap->*_mask which unnecessarily restricted other devices
sharing the port.  This change will also benefit later EH speed down
and hotplug.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:28:33 -05:00
Tejun Heo
c0489e4efc [PATCH] libata: implement ata_unpack_xfermask()
Implement ata_unpack_xfermask().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:28:33 -05:00
Jeff Garzik
2cc432eed0 [libata] Move some bmdma-specific code to libata-bmdma.c
No code changes, just moving code between files.
2006-03-23 00:32:03 -05:00
Tejun Heo
f0c8bbfa15 [PATCH] libata: do not ignore PIO-only devices
As libata now can do PIO, don't ignore PIO-only devices.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-22 19:56:53 -05:00
Alan Cox
67951aded3 [PATCH] libata: Symbol exports
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-22 19:55:41 -05:00
Alan Cox
f4b15fefb3 [PATCH] Update libata DMA blacklist to cover versions, and resync with IDE layer
Not much to say here except that some drives have fixed and bad firmware

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-22 19:55:41 -05:00
Alan Cox
09c7ad79dc [PATCH] libata: Fix a drive detection problem
The current code follows the spec but uses an overlong delay. This would
be great if the hardware did. Several vendors however forget the D7
pulldown. Fortunately 0xFF isnt a sane reset state so we can use it to
skip detection as is done in drivers/ide. (ie this is a tested solution
over a long time)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-22 19:55:40 -05:00
Jeff Garzik
f01c184569 Merge branch 'master' 2006-03-22 19:13:54 -05:00
Jeff Garzik
4d4681f6b9 [libata] fix oops on non-DMA bmdma hardware
Alan noted: "bmdma may be zero but the bmdma_irq_clear function gets
called even in this case during pure PIO operation. Check we have a
bmdma before we use it."

I fixed this by adding a check for zero.  While was I there, I fixed the
non-standard indentation of the small function's code.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:31:22 -05:00
Alan Cox
23cfce8924 [PATCH] libata: make irqtrap mode compile
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:21:32 -05:00
Alan Cox
88f93a31dc [PATCH] libata: report which drive is causing mode problems
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:21:32 -05:00
Brian King
e46834cd2d [PATCH] libata: Add some dummy noop functions
Add some dummy noop functions for use by libata clients
that do not need to do anything. Future SAS patches will
utilize these functions.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:03:43 -05:00
Albert Lee
f59b0cf8a3 [PATCH] libata-dev: Remove ATA_PROT_PIO_MULT
Remove the ATA_PROT_PIO_MULT protocol.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 20:39:46 -05:00
Albert Lee
41ade50c4e [PATCH] libata-dev: add flush task to ata_exec_internal()
Add ata_port_flush_task() to ata_exec_internal().

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 20:39:46 -05:00
Tejun Heo
30afc84cf7 [SCSI] libata: implement minimal transport template for ->eh_timed_out
SCSI midlayer has moved hostt->eh_timed_out to transport template.  As
libata doesn't need full-blown transport support yet, implement
minimal transport for libata.  No transport class or whatsoever, just
empty transport template with ->eh_timed_out hook.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-03-21 13:07:05 -06:00
Tejun Heo
c39f5ebe0a [PATCH] libata: move IDENTIFY info printing from ata_dev_read_id() to ata_dev_configure()
Move IDENTIFY info printing from ata_dev_read_id() to
ata_dev_configure() and print only if @print_info is non-zero.  This
kills duplicate IDENTIFY info printing during probing.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-16 19:22:57 -05:00
Tejun Heo
1148c3a78a [PATCH] libata: use local *id instead of dev->id in ata_dev_configure()
dev->id is used many times in ata_dev_configure().  Use local variable
id instead for shorter notation.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-16 19:22:57 -05:00
Tejun Heo
fb21f0d0ec [PATCH] libata: check Word 88 validity in ata_id_xfer_mask()
Check bit 2 of Word 53 for Word 88 validity before using Word 88 to
determine UDMA mask.  Note that the original xfer mask implementation
using ata_get_mode_mask() didn't consider bit 2 of Word 53.  This
patch introduces different (correct) behavior.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-12 12:51:11 -05:00
Tejun Heo
2044470ccc [PATCH] libata: fix class handling in ata_bus_probe()
ata_bus_probe() didn't set classes[] properly for port disabled case
of ->phy_reset() compatibility path.  This patch moves classes[]
initialization and normalization out of ->probe_reset block such that
it applies to both ->probe_reset and ->phy_reset paths.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-12 12:49:45 -05:00
Jeff Garzik
418dc1f5a8 libata: turn on ATAPI by default 2006-03-11 20:50:08 -05:00
Tejun Heo
2061a47a9b [PATCH] libata: fix missing classes[] initialization in ata_bus_probe()
ata_bus_probe() didn't initialize classes[] properly with
ATA_DEV_UNKNOWN.  As ->probe_reset() is allowed to leave @classes
alone when no device is present, this results in garbage class values.
ATM, the only affected driver is ata_piix.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:04:49 -05:00
Tejun Heo
75f554bc13 [PATCH] libata: kill unused xfer_mode functions
Preceding xfer_mask changes make the following functions unused.

  ata_pio_modes(), base_from_shift(), ata_pr_blacklisted(), fgb()

Kill them.  Also, as xfer_mode_str[] is now only used by
ata_mode_string(), move it into the function.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:39 -05:00
Tejun Heo
a6d5a51cf1 [PATCH] libata: reimplement ata_set_mode() using xfer_mask helpers
Use xfer_mask helpers to determine transfer mode.  This rewrite also
makes transfer mode determination done before any actual
configuration.  This patch doesn't result in any functional changes.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:39 -05:00
Tejun Heo
23e71c3d3e [PATCH] libata: use xfer_mask helpers in ata_dev_set_mode()
Rewrite hardcoded xfer_mode string determination in ata_dev_set_mode()
using xfer_mask helpers.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:39 -05:00
Tejun Heo
ff8854b271 [PATCH] libata: use ata_id_xfermask() in ata_dev_configure()
Replace quick & dirty max transfer mode determination in
ata_dev_configure() with ata_id_xfermask().  While at it, rename
xfer_modes variable to xfer_mask and make it unsigned int for
consistency.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:39 -05:00
Tejun Heo
cb95d562e4 [PATCH] libata: add xfer_mask handling functions
Add ata_pack_xfermask(), ata_xfer_mask2mode(), ata_xfer_mode2mask(),
ata_xfer_mode2shift() and ata_id_xfermask().  These functions will be
used by following patches to simplify xfer_mask handling.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:39 -05:00
Tejun Heo
1da7b0d01b [PATCH] libata: improve xfer mask constants and update ata_mode_string()
Add ATA_BITS_*, ATA_MASK_* macros and reorder xfer_mask fields such
that higher transfer mode is placed at higher order bit.  As thie
reordering breaks ata_mode_string(), this patch also rewrites
ata_mode_string().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 19:03:38 -05:00
Tejun Heo
2e755f68ee [PATCH] libata: rename ATA_FLAG_FLUSH_PIO_TASK to ATA_FLAG_FLUSH_PORT_TASK
Rename ATA_FLAG_FLUSH_PIO_TASK to ATA_FLAG_FLUSH_PORT_TASK.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 17:57:21 -05:00
Tejun Heo
507ceda003 [PATCH] libata: kill unused pio_task and packet_task
Kill unused pio_task and packet_task.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 17:57:20 -05:00