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* [libata] pm: differentiate system and runtime pm for ata portAaron Lu2013-01-251-23/+53
| | | | | | | | | | | | | | | | | | We need to do different things for system PM and runtime PM, e.g. we do not need to enable runtime wake for ZPODD when we are doing system suspend, etc. Currently, we use PMSG_SUSPEND for both system suspend and runtime suspend and PMSG_ON for both system resume and runtime resume. Change this by using PMSG_AUTO_SUSPEND for runtime suspend and PMSG_AUTO_RESUME for runtime resume. And since PMSG_ON means no transition, it is changed to PMSG_RESUME for ata port's system resume. The ata_acpi_set_state is modified accordingly, and the sata case and pata case is seperated for easy reading. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: expose pm qos flags for ata deviceAaron Lu2013-01-211-0/+3
| | | | | | | | | | | | | | | | | Expose pm qos flags to user space so that user has a chance to disable ZPODD feature, if he/she has a broken platform or devices or simply does not like this feature. This flag is exposed to user space only for ZPODD devices. Due to this flag, it is possible the ODD is ZP ready but we didn't power it off. So the zp_ready flag will need to be cleared whenever we found the ODD is not in ZP ready state. Previously, once zp_ready is set, the ODD will always be powered off and the flag will be cleared in post_poweron. But this is no longer the case now. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: handle power transition of ODDAaron Lu2013-01-211-10/+25
| | | | | | | | | | | | | | | | | | | | When ata port is runtime suspended, it will check if the ODD attched to it is a zero power(ZP) capable ODD and if the ZP capable ODD is in zero power ready state. And if this is not the case, the highest acpi state will be limited to ACPI_STATE_D3_HOT to avoid powering off the ODD. And if the ODD can be powered off, runtime wake capability needs to be enabled and powered_off flag will be set to let resume code knows that the ODD was in powered off state. And on resume, before it is powered on, if it was powered off during suspend, runtime wake capability needs to be disabled. After it is recovered, the ODD is considered functional, post power on processing like eject tray if the ODD is drawer type is done, and several ZPODD related fields will also be reset. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: move acpi notification code to zpoddAaron Lu2013-01-211-71/+0
| | | | | | | | | | | | | | | | | Since the ata acpi notification code introduced in commit 3bd46600a7a7e938c54df8cdbac9910668c7dfb0 is solely for ZPODD, and we now have a dedicated place for it, move these code there. And the ata_acpi_add_pm_notifier code is changed a little bit in that it is now invoked when scsi device is not bound with ACPI yet, so the way to get the acpi handle is different with the previous version. And the ata_acpi_add/remove_pm_notifier is also simplified a little bit in that it doesn't check if the acpi_device for the handle exists or not as the odd_can_poweroff function already checked that. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: restore acpi disable functionalityAaron Lu2012-12-031-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | Commit 66fa7f215 "libata-acpi: improve ACPI disabling" introdcued the behaviour of disabling ATA ACPI if ata_acpi_on_devcfg failed the 2nd time, but commit 30dcf76ac dropped this behaviour and this caused problem for Dimitris Damigos, where his laptop can not resume correctly. The bugzilla page for it is: https://bugzilla.kernel.org/show_bug.cgi?id=49331 The problem is, ata_dev_push_id will fail the 2nd time it is invoked, and due to disabling ACPI code is dropped, ata_acpi_on_devcfg which calls ata_dev_push_id will keep failing and eventually made the device disabled. This patch restores the original behaviour, if acpi failed the 2nd time, disable acpi functionality for the device(and we do not event need to add a debug message for this as it is still there ;-). Reported-by: Dimitris Damigos <damigos@freemail.gr> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: Fix NULL ptr derference in ata_acpi_dev_handleAaron Lu2012-11-161-3/+8
| | | | | | | | | | | | | | | | | commit 6b66d95895c149cbc04d4fac5a2f5477c543a8ae didn't handle SATA PMP case in ata_acpi_bind_device and will cause a NULL ptr dereference when user attached a SATA drive to the PMP port. Fix this by checking PMP support. This bug is reported by Dan van der Ster in the following bugzilla page: https://bugzilla.kernel.org/show_bug.cgi?id=48211 Reported-by: Dan van der Ster <dan@vanderster.com> Tested-by: Dan van der Ster <dan@vanderster.com> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Tested-by: Simon <tangouniform@sbcglobal.net>
* [libata] acpi: call ata_acpi_gtm during ata port init timeAaron Lu2012-08-171-11/+4
| | | | | | | | | | | | | | Commit 30dcf76acc695cbd2fa919e294670fe9552e16e7 mistakenly dropped the code to get an initial gtm for the IDE channel. This caused the following problem for Sergei: http://marc.info/?l=linux-kernel&m=134484963618457&w=2 Fix this by adding the call back in ata_acpi_bind_host, and due to this, the ata_ap_acpi_handle is modified accordingly. Tested-by: Sergei Trofimovich <slyich@gmail.com> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: fix up for acpi_pm_device_sleep_state APIStephen Rothwell2012-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | After merging the libata tree, today's [2012-07-01] linux-next build (x86_64 allmodconfig) failed like this: drivers/ata/libata-acpi.c: In function 'ata_acpi_set_state': drivers/ata/libata-acpi.c:872:5: error: too few arguments to function 'acpi_pm_device_sleep_state' include/acpi/acpi_bus.h:418:5: note: declared here Caused by commit 3bd46600a7a7 ("libata-acpi: add ata port runtime D3Cold support") from the libata tree interacting with commit ee85f543710d ("ACPI/PM: specify lowest allowed state for device sleep state") from the pci tree. This patch adds ACPI_STATE_D3 as the new third parameter to acpi_pm_device_sleep_state() Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: tell scsi layer device supports runtime power offAaron Lu2012-06-291-2/+26
| | | | | | | | | If ATA device supports "Device Attention", then tell scsi layer that the device supports runtime power off. Signed-off-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: register/unregister device to/from power resourceLin Ming2012-06-291-0/+32
| | | | | Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: add ata port runtime D3Cold supportLin Ming2012-06-291-4/+74
| | | | | | | | | ATA port may support runtime D3Cold state, for example, Zero-power ODD case. This patch adds wakeup notifier and enable/disable run_wake during supend/resume. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: set acpi state for SATA portLin Ming2012-06-291-9/+11
| | | | | | | | | Currently, ata_acpi_set_state() only sets acpi sate for IDE port. Remove this limitation. Acked-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: migrate ACPI code over to new bindingsMatthew Garrett2012-06-291-125/+36
| | | | | | | | | | | Now that we have the ability to directly glue the ACPI namespace to the driver model in libata, we don't need the custom code to handle the same thing. Remove it and migrate the functions over to the new code. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Holger Macht <holger@homac.de> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: bind the Linux device tree to the ACPI device treeMatthew Garrett2012-06-291-0/+137
| | | | | | | | | | Associate the ACPI device tree and libata devices. This patch uses the generic ACPI glue framework to do so. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Holger Macht <holger@homac.de> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* Merge branch 'release' of ↵Linus Torvalds2011-08-031-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (28 commits) ACPI: delete stale reference in kernel-parameters.txt ACPI: add missing _OSI strings ACPI: remove NID_INVAL thermal: make THERMAL_HWMON implementation fully internal thermal: split hwmon lookup to a separate function thermal: hide CONFIG_THERMAL_HWMON ACPI print OSI(Linux) warning only once ACPI: DMI workaround for Asus A8N-SLI Premium and Asus A8N-SLI DELUX ACPI / Battery: propagate sysfs error in acpi_battery_add() ACPI / Battery: avoid acpi_battery_add() use-after-free ACPI: introduce "acpi_rsdp=" parameter for kdump ACPI: constify ops structs ACPI: fix CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS ACPI: fix 80 char overflow ACPI / Battery: Resolve the race condition in the sysfs_remove_battery() ACPI / Battery: Add the check before refresh sysfs in the battery_notify() ACPI / Battery: Add the hibernation process in the battery_notify() ACPI / Battery: Rename acpi_battery_quirks2 with acpi_battery_quirks ACPI / Battery: Change 16-bit signed negative battery current into correct value ACPI / Battery: Add the power unit macro ...
| * ACPI: constify ops structsVasiliy Kulikov2011-07-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Structs battery_file, acpi_dock_ops, file_operations, thermal_cooling_device_ops, thermal_zone_device_ops, kernel_param_ops are not changed in runtime. It is safe to make them const. register_hotplug_dock_device() was altered to take const "ops" argument to respect acpi_dock_ops' const notion. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>Joe Perches2011-07-231-38/+28
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* libata: remove ATA_FLAG_MMIOSergei Shtylyov2011-03-021-2/+1
| | | | | | | | | Commit 0d5ff566779f894ca9937231a181eb31e4adff0e (libata: convert to iomap) removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself. Do it now, at last... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* gcc-4.6: ACPI: fix unused but set variables in ACPIAndi Kleen2010-08-151-6/+0
| | | | | | | | | Some minor improvements in error handling, but overall it was mostly dead code. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* ACPI: replace acpi_integer by u64Lin Ming2010-01-281-2/+2
| | | | | | | | acpi_integer is now obsolete and removed from the ACPICA code base, replaced by u64. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* libata-acpi: missing _SDD is not an errorTejun Heo2009-12-031-6/+9
| | | | | | | | Missing _SDD is not an error. Don't treat it as one. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: make gtf_filter per-devTejun Heo2009-10-061-8/+9
| | | | | | | | | Add ->gtf_filter to ata_device and set it to ata_acpi_gtf_filter when initializing ata_link. This is to allow quirks which apply different gtf filters. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: implement more acpi filtering optionsTejun Heo2009-10-061-4/+15
| | | | | | | | | Currently libata-acpi can only filter DIPM among SATA feature enables via _GTF. This patch adds the capability to filter out FPDMA non-zero offset, in-order guarantee and auto-activation. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: cosmetic updatesTejun Heo2009-10-061-10/+0
| | | | | | | | We're about to add more SATA_* and ATA_ACPI_FILTER_* constants. Reformat them in preparation. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: add command name parsing for error outputRobert Hancock2009-09-021-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | 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 <hancockrwd@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* trivial: fix typos s/paramter/parameter/ and s/excute/execute/ in ↵Martin Olsson2009-06-121-2/+2
| | | | | | | documentation and source comments. Signed-off-by: Martin Olsson <martin@minimum.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Merge branch 'linus' into releaseLen Brown2009-01-091-11/+8
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| * libata: beef up iteratorsTejun Heo2008-12-291-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ACPI: remove private acpica headers from driver filesLin Ming2008-12-311-6/+0
|/ | | | | | | External driver files should not include any private acpica headers. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* dock: introduce .uevent for devices in dock, eg libataShaohua Li2008-09-241-2/+42
| | | | | | | | | | | 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 <shaohua.li@intel.com> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
* libata: remove functions now handed by ACPI dock driverShaohua Li2008-09-241-93/+14
| | | | | | | | | | 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 <shaohua.li@intel.com> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
* libata-acpi: don't call sleeping function from invalid contextZhang Rui2008-07-111-1/+4
| | | | | | | | | | | | 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=451399 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: filter out DIPM enableTejun Heo2008-07-111-2/+12
| | | | | | | | | | | | | | | | | 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 <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* [libata] ACPI: Properly handle bay devices in dock stationsHolger Macht2008-06-041-51/+114
| | | | | | | | | | | | | | | | | | | | | | | | | * 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 <mjg59@srcf.ucam.org>) * Call ACPI _EJ0 for detached devices Signed-off-by: Holger Macht <hmacht@suse.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* drivers/ata: trim trailing whitespaceJeff Garzik2008-05-191-4/+4
| | | | Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* Fixups to ATA ACPI hotplugMatthew Garrett2008-05-191-27/+50
| | | | | | | | | | | | | | | | | 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 <mjg@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi.c: remove unneeded #if'sAdrian Bunk2008-04-251-4/+0
| | | | | | | | | | | 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 <bunk@kernel.org> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ata-acpi: don't call _GTF for disabled driveShaohua Li2008-04-171-2/+4
| | | | | | | | | | | | | | | | | | 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 <shaohua.li@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata: implement PMP helpersTejun Heo2008-04-171-1/+1
| | | | | | | | | | | 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 <htejun@gmail.com>
* libata-acpi: improve dock event handlingTejun Heo2008-03-171-27/+69
| | | | | | | | | | | | | | | | | | | 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 <htejun@gmail.com> Cc: Holger Macht <hmacht@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ata: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-03-111-4/+4
| | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask()Tejun Heo2008-01-231-25/+16
| | | | | | | | | | | | | | | | 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 <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: implement ata_timing_cycle2mode() and use it in libata-acpi and ↵Tejun Heo2008-01-231-47/+15
| | | | | | | | | | | | | | pata_acpi 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 <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: fix ata_acpi_gtm_xfermask()Tejun Heo2008-01-231-21/+21
| | | | | | | | | | | | | | | | | | | 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 <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: separate out ata_acpi_gtm_xfermask() from pacpi_discover_modes()Tejun Heo2008-01-231-0/+78
| | | | | | | | | | | | | | 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 <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata-acpi: add ACPI _PSx methodShaohua Li2008-01-231-0/+30
| | | | | | | | | | | 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 <shaohua.li@intel.com> Acked-by: Len Brown <len.brown@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* libata-acpi: implement _GTF command filteringTejun Heo2007-12-181-44/+115
| | | | | | | | | | | | | | | | | 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 <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata-acpi: improve _GTF execution error handling and reportingTejun Heo2007-12-181-31/+46
| | | | | | | | | | | | | | | | | 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 <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata-acpi: improve ACPI disablingTejun Heo2007-12-181-21/+38
| | | | | | | | | | | | | | * 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 <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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