02 Sep, 2009
1 commit
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This patch improve libata's output for error/notification messages
to allow easier comprehension and debugging:When ATAPI commands issued through the SCSI layer fail, use SCSI
functions to print the CDB in human-readable form instead of just
dumping out the CDB in hex.Print out the name of the failed command (as defined by the ATA
specification) in error handling output along with the raw register
contents.When reporting status of ACPI taskfile commands executed on resume,
also output the names of the commands being executed (or not) in
readable form.Since the extra data for printing command names increases kernel
size slightly, a config option has been added to allow disabling
command name output (as well as some of the error register parsing)
for those highly sensitive to kernel text size.Signed-off-by: Robert Hancock
Signed-off-by: Jeff Garzik
13 Jun, 2009
1 commit
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Signed-off-by: Martin Olsson
Signed-off-by: Jiri Kosina
09 Jan, 2009
1 commit
31 Dec, 2008
1 commit
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External driver files should not include any private acpica headers.
Signed-off-by: Lin Ming
Signed-off-by: Len Brown
29 Dec, 2008
1 commit
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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 orderNow 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 orderThis 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
Signed-off-by: Jeff Garzik
24 Sep, 2008
2 commits
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dock's uevent reported itself, not ata. It might be difficult to find an
ata device just according to a dock. This patch introduces docking ops
for each device in a dock. when docking, dock driver can send device
specific uevent. This should help dock station too (not just bay)Signed-off-by: Shaohua Li
Acked-by: Tejun Heo
Signed-off-by: Len Brown -
dock driver can handle ata(bay) hotplug now. dock driver already handles
_EJ0 and _STA, so remove them. Also libata doesn't need register
notification handler anymore.Signed-off-by: Shaohua Li
Acked-by: Tejun Heo
Signed-off-by: Len Brown
11 Jul, 2008
2 commits
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The problem is introduced by commit
664d080c41463570b95717b5ad86e79dc1be0877.acpi_evaluate_integer is a sleeping function,
and it should not be called with spin_lock_irqsave.
https://bugzilla.redhat.com/show_bug.cgi?id=451399Signed-off-by: Zhang Rui
Signed-off-by: Jeff Garzik -
Some BIOSen enable DIPM via _GTF which causes command timeouts under
certain configuration. This didn't occur on 2.6.25 because 2.6.25
defaulted to SRST, so _GTF wasn't executed during boot probe, so ahci
host reset disabled DIPM and as _GTF wasn't executed after SRST, DIPM
wasn't enabled. On 2.6.26, hardreset is used during probe and after
probe _GTF is executed enabling DIPM and thus the failures.This patch could theoretically disable DIPM on machines which used to
have it enabled on 2.6.25 but AFAIK ahci is currently the only driver
which uses SATA ACPI hierarchy (_SDD) and as the host reset would have
always disabled DIPM, this shouldn't happen.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
04 Jun, 2008
1 commit
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* Differentiate between bay devices in dock stations and others:
- When an ACPI_NOTIFY_EJECT_REQUEST appears, just signal uevent to
userspace (that is when the optional eject button on a bay device is
pressed/pulled) giving the possibility to unmount file systems and to
clean up. Also, only send uevent in case we get an EJECT_REQUEST
without doing anything else. In other cases, you'll get an add/remove
event because libata attaches/detaches the device.- In case of a dock event, which in turn signals an
ACPI_NOTIFY_EJECT_REQUEST, immediately detach the device, because it
may already have been gone* In case of an ACPI_NOTIFY_DEVICE/BUS_CHECK, evaluate _STA to check if
the device has been plugged or unplugged. If plugged, hotplug it, if
unplugged, just signal event to userspace
(initial patch by Matthew Garrett )* Call ACPI _EJ0 for detached devices
Signed-off-by: Holger Macht
Signed-off-by: Jeff Garzik
20 May, 2008
2 commits
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Signed-off-by: Jeff Garzik
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The libata-acpi.c code currently accepts hotplug messages from both the
port and the device. This does not match the behaviour of the bay
driver, and may result in confusion when two hotplug requests are
received for the same device. This patch limits the hotplug notification
to removable ACPI devices, which in turn allows it to use the _STA
method to determine whether the device has been removed or inserted.
On removal, devices are marked as detached. On insertion, a hotplug scan
is started. This should avoid lockups caused by the ata layer attempting
to scan devices which have been removed. The uevent sending is moved
outside the spinlock in order to avoid a warning generated by it firing
when interrupts are disabled.Signed-off-by: Matthew Garrett
Signed-off-by: Jeff Garzik
25 Apr, 2008
1 commit
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These #if's are unneeded since they:
- did anyway not handle the CONFIG_ACPI_DOCK_MODULE case correctly and
- this is already handled in include/acpi/acpi_drivers.h and
- it's now correctly handled in kconfig.Signed-off-by: Adrian Bunk
Acked-by: Tejun Heo
Signed-off-by: Jeff Garzik
18 Apr, 2008
2 commits
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I got below log after a S3 resume in a ASUS A6VC laptop. The system has
only one IDE drive. It appears there is no reason calling _GTF for
disabled drive.ACPI Error (dsopcode-0483): Attempt to CreateField of length zero [20070126]
ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.IDE0.RATA] (Node df822a7c), AE_AML_OPERAND_VALUE
ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.IDE0.CHN1.DRV0._GTF] (Node df822bd0), AE_AML_OPERAND_VALUE
ata2.00: _GTF evaluation failed (AE 0x3006)
ACPI Error (dsopcode-0483): Attempt to CreateField of length zero [20070126]
ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.IDE0.RATA] (Node df822a7c), AE_AML_OPERAND_VALUE
ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.IDE0.CHN1.DRV1._GTF] (Node df822b94), AE_AML_OPERAND_VALUE
ata2.01: _GTF evaluation failed (AE 0x3006)Signed-off-by: Shaohua Li
Signed-off-by: Jeff Garzik -
Implement helpers to test whether PMP is supported, attached and
determine pmp number to use when issuing SRST to a link. While at it,
move ata_is_host_link() so that it's together with the two new PMP
helpers.This change simplifies LLDs and helps making PMP support optional.
Signed-off-by: Tejun Heo
17 Mar, 2008
1 commit
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Improve ACPI hotplug handling such that dock event is handled properly.
* Register handlers for dock events.
* Directly detach device on EJECT_REQUEST instead of signaling hotplug
event. This prevents libata from accessing severed controller
and/or device.* While at it, use named constants for ACPI events and move uevent
signaling inside host lock.Original patch and testing by Holger Macht.
Signed-off-by: Tejun Heo
Cc: Holger Macht
Signed-off-by: Jeff Garzik
11 Mar, 2008
1 commit
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__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison
Signed-off-by: Jeff Garzik
23 Jan, 2008
5 commits
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Reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() and
while at it relocate the function below ata_acpi_gtm_xfermask().New ata_acpi_cbl_80wire() implementation takes @gtm, in both pata_via
and pata_amd, use the initial GTM value. Both are trying to peek
initial BIOS configuration, so using initial caching value makes
sense. This fixes ACPI part of cable detection in pata_amd which
previously always returned 0 because configuring PIO0 during reset
clears DMA configuration.Signed-off-by: Tejun Heo
Cc: Alan Cox
Signed-off-by: Jeff Garzik -
libata-acpi is using separate timing tables for transfer modes
although libata-core has the complete ata_timing table. Implement
ata_timing_cycle2mode() to look for matching mode given transfer type
and cycle duration and use it in libata-acpi and pata_acpi to replace
private timing tables.Signed-off-by: Tejun Heo
Cc: Alan Cox
Signed-off-by: Jeff Garzik -
ata_acpi_gtm_xfermask() as separated out from pacpi_discover_modes()
has various bugs. Fix them.* The wrong comparison operator is used when finding for matching
cycle resulting totally bogus result.* With the comparion operator fixed, boundary condtion handling is
clumsy.* Setting of any DMA mask bit set all bits in PIO mask.
* MWDMA and UDMA blocks are swapped.
Signed-off-by: Tejun Heo
Cc: Alan Cox
Signed-off-by: Jeff Garzik -
Finding out matching transfer mode from ACPI GTM values is useful for
other purposes too. Separate out the function and timing tables from
pata_acpi::pacpi_discover_modes().Other than checking shared-configuration bit after doing
ata_acpi_gtm() in pacpi_discover_modes() which should be safe, this
patch doesn't introduce any behavior change.Signed-off-by: Tejun Heo
Cc: Alan Cox
Signed-off-by: Jeff Garzik -
ACPI spec (ver 3.0a, p289) requires IDE power on/off executes ACPI _PSx
methods. As recently most PATA drivers use libata, this patch adds _PSx
method support in libata. ACPI spec doesn't mention if SATA requires the
same _PSx method.Signed-off-by: Shaohua Li
Acked-by: Len Brown
Signed-off-by: Jeff Garzik
18 Dec, 2007
7 commits
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Implement _GTF command filtering which can be controlled by
libata.acpi_filter kernel parameter. Currently SETXFER and LOCK
commands are filtered.libata configures transfer mode by itself and _GTF SETXFER commands
can potentially disrupt device configuration. _GTM/_STM mechanism
can't handle hotplugging too well and when _GTF is executed,
controller is in PIO0 rather than the mode _STM configured.Note that detecting SET MAX LOCK requires looking at the previous
command. This adds a bit to code complexity.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
As _GTF commands can't transfer data, device error never signals
transfer error. It indicates that the device vetoed the operation, so
it's meaningless to retry.This patch makes libata-acpi to report and continue on device errors
when executing _GTF commands. Also commands rejected by device don't
contribute to the number of _GTF commands executed.While at it, update _GTF execution reporting such that all successful
commands are logged at KERN_DEBUG and rename taskfile_load_raw() to
ata_acpi_run_tf() for consistency.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
* If _GTF evalution fails, it's pointless to retry. If nothing else
is wrong, just ignore the error.* After disabling ACPI, return success iff the number of executed _GTF
command equals zero. Otherwise, tell EH to retry. This change
fixes bogus 1 return bug where ata_acpi_on_devcfg() expects the
caller to reload IDENTIFY data and continue but the caller
interprets it as an error.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
On certain implementations, _GTF evaluation depends on preceding _STM
and both can be pretty picky about the configuration. Using _GTM
result cached during controller initialization satisfies the most
neurotic _STM implementation. However, libata evaluates _GTF after
reset during device configuration and the hardware state can be
different from what _GTF expects and can cause evaluation failure.This patch adds dev->gtf_cache and updates ata_dev_get_GTF() such that
it uses the cached value if available. Cache is cleared with a call
to ata_acpi_clear_gtf().Because for SATA ACPI nodes _GTF must be evaluated after _SDD which
can't be done till IDENTIFY is complete, _GTF caching from
ata_acpi_on_resume() is used only for IDE ACPI nodes.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
_GTM fetches currently configured transfer mode while _STM configures
controller according to _GTM parameter and prepares transfer mode
configuration TFs for _GTF. In many cases _GTM and _STM
implementations are quite brittle and can't cope with configuration
changed by libata.libata does not depend on ATA ACPI to configure devices. The only
reason libata performs _GTM and _STM are to make _GTF evaluation
succeed and libata also doesn't care about how _GTF TFs configure
transfer mode. It overrides that configuration anyway, so from
libata's POV, it doesn't matter what value is feeded to _STM as long
as evaluation succeeds for _STM and following _GTF.This patch adds dev->__acpi_init_gtm and store initial _GTM values on
host initialization before modified by reset and mode configuration.
If the field is valid, ata_acpi_init_gtm() returns pointer to the
saved _GTM structure; otherwise, NULL.This saved value is used for _STM during resume and peek at
BIOS/firmware programmed initial timing for later use. The accessor
is there to make building w/o ACPI easy as dev->__acpi_init doesn't
exist if ACPI is not enabled.On driver detach, the initial BIOS configuration is restored by
executing _STM with the initial _GTM values such that the next driver
can also use the initial BIOS configured values.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Add two hooks - ata_acpi_dissociate() which is called during driver
detach after the whole host is shutdown and ata_acpi_on_disable()
which is called when a device is disabled.Signed-off-by: Tejun heo
Signed-off-by: Jeff Garzik -
* No internal function uses const ata_port. Drop const from @ap.
* Make ata_acpi_stm() copy @stm before using it and change @stm to
const.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
10 Nov, 2007
1 commit
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Experience suggests that the _GTF method may be bad. We currently fail
device revalidation in that case, which seems excessive.Signed-off-by: Matthew Garrett
Signed-off-by: Jeff Garzik
24 Oct, 2007
1 commit
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Tackle the relatively sane complaints of checkpatch --file.
The vast majority is indentation and whitespace changes, the rest are
* #include fixes
* printk KERN_xxx prefix addition
* BSS/initializer cleanupsSigned-off-by: Jeff Garzik
13 Oct, 2007
7 commits
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Add @timeout argument to ata_exec_internal[_sg](). If 0, default
timeout ata_probe_timeout is used.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Talk to the dark side our driver has to, yes. Much misleading is the
data. Store it in a structure we do so that it may be parsed.Signed-off-by: Alan Cox
--
Whats small, old and shouts phrases out of order across mountains ?
Yodla..
Signed-off-by: Jeff Garzik -
Modern laptops with hotswap bays still tend to utilise a PATA interface
on a SATA bridge, generally with the host controller in some legacy
emulation mode rather than AHCI. This means that the existing hotplug
code in libata is unable to work. The ACPI specification states that
these devices can send notifications when hotswapped, which avoids the
need to obtain notification from the controller. This patch uses the
existing libata-acpi code and simply registers a notification in order
to trigger a rescan whenever the firmware signals an event.Signed-off-by: Matthew Garrett
Signed-off-by: Jeff Garzik -
Extend ata_acpi_associate_sata_port() such that it can handle PMP and
call it when PMP is attached and detached.Build breakage when !CONFIG_ATA_ACPI was spotted and fixed by Petr
Vandrovec.Signed-off-by: Tejun Heo
Cc: Petr Vandrovec
Signed-off-by: Jeff Garzik -
Combined from two Alan Cox patches:
1) libata: ACPI checks for 80wire cable
We can use the ACPI mode information with several drivers as a hint to
cable type. If the ACPI mode set by the BIOS is faster than UDMA33 then
we know the BIOS thinks there are 80wire cables. If it doesn't set such a
mode or it has no ACPI method then we get no further information and can
rely on existing approachesIntroduce the function headers needed. Null it out for non ACPI boxes
Signed-off-by: Alan Cox
2) libata: ACPI checks for 80wire cable
Provide actual methods for checking if the ACPI support thinks the cable
is 80wire, or doesn't knowSigned-off-by: Alan Cox
Combined into a single changeset and
Signed-off-by: Jeff Garzik -
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
Signed-off-by: Jeff Garzik -
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
Cc: James Bottomley
Signed-off-by: Jeff Garzik
10 Jul, 2007
2 commits
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Implement _GTM/_STM support. acpi_gtm is added to ata_port which
stores _GTM parameters over suspend/resume cycle. A new hook
ata_acpi_on_suspend() is responsible for storing _GTM parameters
during suspend. _STM is executed in ata_acpi_on_resume(). With this
change, invoking _GTF is safe on IDE hierarchy and acpi_sata check
before _GTF is removed.ata_acpi_gtm() and ata_acpi_stm() implementation is taken from Alan
Cox's pata_acpi implementation. ata_acpi_gtm() is fixed such that the
result parameter is not shifted by sizeof(union acpi_object).Signed-off-by: Tejun Heo
Cc: Alan Cox
Signed-off-by: Jeff Garzik -
Remove remaining unnecessary feature and status checks.
Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik