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* | [PATCH] libata-hp: update unload-unplugTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | Update unload unplug - driver unloading / PCI removal. This is done by ata_port_detach() which short-circuits EH, disables all devices and freezes the port. With this patch, EH and unloading/unplugging are properly synchronized. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp: implement bootplugTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | | | | | | | Implement bootplug - boot probing via hotplug path. While loading, ata_host_add() simply schedules probing and invokes EH. After EH completes, ata_host_add() scans and assicates them with SCSI devices. EH path is slightly modified to handle this (e.g. no autopsy during bootplug). The SCSI part is left in ata_host_add() because it's shared with legacy path and to keep probing order as before (ATA scan all ports in host_set then attach all). Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp: implement warmplugTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | Implement warmplug. User-initiated unplug can be detected by hostt->slave_destroy() and plug by transportt->user_scan(). This patch only implements the two callbacks. The next function will hook them. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp: implement SCSI part of hotplugTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | | | | | Implement SCSI part of hotplug. This must be done in a separate context as SCSI makes use of EH during probing. SCSI scan fails silently if EH is in progress. In such cases, libata pauses briefly and retries until every device is attached. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata: export ata_hsm_move()Tejun Heo2006-05-31
| | | | | | | | | | | | | | ata_hsm_move() will be used by LLDDs which depend on standard PIO HSM but implement their own interrupt handlers. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: add prereset() method and implement ata_std_prereset()Tejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With hotplug, every reset might be a probing reset and thus something similar to probe_init() is needed. prereset() method is called before a series of resets to a port and is the counterpart of postreset(). prereset() can tell EH to use different type of reset or skip reset by modifying ehc->i.action. This patch also implements ata_std_prereset(). Most controllers should be able to use this function directly or with some wrapping. After hotplug, different controllers need different actions to resume the PHY and detect the newly attached device. Controllers can be categorized as follows. * Controllers which can wait for the first D2H FIS after hotplug. Note that if the waiting is implemented by polling TF status, there needs to be a way to set BSY on PHY status change. It can be implemented by hardware or with the help of the driver. * Controllers which can wait for the first D2H FIS after sending COMRESET. These controllers need to issue COMRESET to wait for the first FIS. Note that the received D2H FIS could be the first D2H FIS after POR (power-on-reset) or D2H FIS in response to the COMRESET. Some controllers use COMRESET as TF status synchronization point and clear TF automatically (sata_sil). * Controllers which cannot wait for the first D2H FIS reliably. Blindly issuing SRST to spinning-up device often results in command issue failure or timeout, causing extended delay. For these controllers, ata_std_prereset() explicitly waits ATA_SPINUP_WAIT (currently 8s) to give newly attached device time to spin up, then issues reset. Note that failing to getting ready in ATA_SPINUP_WAIT is not critical. libata will retry. So, the timeout needs to be long enough to spin up most devices. LLDDs can tell ata_std_prereset() which of above action is needed with ATA_FLAG_HRST_TO_RESUME and ATA_FLAG_SKIP_D2H_BSY flags. These flags are PHY-specific property and will be moved to ata_link later. While at it, this patch unifies function typedef's such that they all have named arguments. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: implement sata_phy_debounce()Tejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With hotplug, PHY always needs to be debounced before a reset as any reset might find new devices. Extract PHY waiting code from sata_phy_resume() and extend it to include SStatus debouncing. Note that sata_phy_debounce() is superset of what used to be done inside sata_phy_resume(). Three default debounce timing parameters are defined to be used by hot/boot plug. As resume failure during probing will be properly handled as errors, timeout doesn't have to be long as before. probeinit() uses the same timeout to retain the original behavior. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: make probing related functions globalTejun Heo2006-05-31
| | | | | | | | | | | | | | Hotplug will be implemented in libata-eh.c. Make ata_dev_read_id() and ata_dev_configure() global. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: add ata_aux_wqTejun Heo2006-05-31
| | | | | | | | | | | | | | | | It's best to run ATA hotplug from EH but attaching SCSI devices needs working EH. ata_aux_wq is used to give SCSI hotplug operations a separate context. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: implement ap->hw_sata_spd_limitTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | Add ap->hw_sata_spd_limit and initialize it once during the boot initialization (or driver load initialization). ap->sata_spd_limit is reset to ap->hw_sata_spd_limit on hotplug. This prevents spd limits introduced by earlier devices from affecting new devices. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: make some ata_device fields persistentTejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lifetimes of some fields span over device plugging/unplugging. This patch moves such persistent fields to the top of ata_device and separate them with ATA_DEVICE_CLEAR_OFFSET. Fields above the offset are initialized once during host initializatino while all other fields are cleared before hotplugging. Currently ->ap, devno and part of flags are persistent. Note that flags is partially cleared while holding host_set lock. This is to synchronize with later warm plug implementation which will record hotplug request in dev->flags. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-hp-prep: implement ata_dev_init()Tejun Heo2006-05-31
| | | | | | | | | | | | | | | | Move initialization of struct ata_device into ata_dev_init() in preparation for hotplug. This patch calls ata_dev_init() from ata_host_init() and thus makes no functional difference. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata: implement ata_eh_wait()Tejun Heo2006-05-31
| | | | | | | | | | | | | | | | | | Implement ata_eh_wait(). On return from this function, it's guaranteed that the EH which was pending or in progress when the function was called is complete - including the tailing part of SCSI EH. This will be used by hotplug and others to synchronize with EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | libata debugging: set initial dbg valueBorislav Petkov2006-05-29
| | | | | | | | | | | | | | | | | | | | | | This patch sets the prerequisites for the new debugging scheme that more or less resembles Donald Becker's net driver example. This one liner doesn't change any functionality beside setting the appropriate debug level for the msg_enable control in the ata_port struct, which will be later used by the ata_msg_* macros to control the amount of debug information sent to printk. Signed-off-by: <petkov@uni-muenster.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | Merge branch 'upstream-fixes' into upstreamJeff Garzik2006-05-28
|\| | | | | | | | | | | Conflicts: drivers/scsi/libata-core.c
| * [PATCH] the latest consensus libata resume fixMark Lord2006-05-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Okay, just to sum things up. This forces libata to wait for up to 2 seconds for BUSY|DRQ to clear on resume before continuing. [jgarzik adds...] During testing we never saw DRQ asserted, but nonetheless (a) this works and (b) testing for DRQ won't hurt. Signed-off-by: Mark Lord <liml@rtr.ca> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] libata: add pio_data_xfer_noirqAlan Cox2006-05-26
| | | | | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] PATCH: libata. Add ->data_xfer methodAlan Cox2006-05-24
| | | | | | | | | | | | | | | | | | | | | | We need to pass the device in order to do per device checks such as 32bit I/O enables. With the changes to include dev->ap we now don't have to add parameters however just clean them up. Also add data_xfer methods to the existing drivers except ata_piix (which is in the other block of patches). If you reject the piix one just add a data_xfer to it... Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] libata: PIO 0Alan Cox2006-05-24
| | | | | | | | | | | | | | | | | | Ensure the pio_mode is always setup. Don't do any setup on the controller b just ensure the mode reporting is valid to avoid tons of special cases in PATA driver code when mode switching on the fly. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | Merge branch 'upstream-fixes' into upstreamJeff Garzik2006-05-24
|\| | | | | | | | | | | Conflicts: drivers/scsi/libata-core.c
| * [PATCH] libata: add pio flush for via atapi (was: Re: TR: ASUS A8V Deluxe, ↵Albert Lee2006-05-24
| | | | | | | | | | | | | | | | | | x86_64) Backport the "pio flush" from the libata major update to 2.6.17 for via atapi. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] libata: use qc->result_tf for temp taskfile storageAlbert Lee2006-05-20
| | | | | | | | | | | | | | Use qc->result_tf for temp taskfile storage. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] libata: Fix the HSM error_mask mapping (was: Re: libata-tj and SMART)Albert Lee2006-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix the HSM error_mask mapping. Changes: - Better mapping in ac_err_mask() - In HSM_ST_FIRST ans HSM_ST state, check ATA_ERR|ATA_DF and map it to AC_ERR_DEV instead of AC_ERR_HSM. - In HSM_ST_FIRST and HSM_ST state, map DRQ=1 ERR=1 to AC_ERR_HSM. - For PIO data in and DRQ=1 ERR=1, add check after the junk data block is read. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | Merge branch 'upstream-fixes' into upstreamJeff Garzik2006-05-20
|\| | | | | | | | | | | Conflicts: drivers/scsi/libata-core.c
| * [PATCH] libata-core: fix current kernel-doc warningsRandy Dunlap2006-05-20
| | | | | | | | | | | | | | Fix all current kernel-doc warnings. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * [PATCH] move ->eh_strategy_handler to the transport classChristoph Hellwig2006-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | Overriding the whole EH code is a per-transport, not per-host thing. Move ->eh_strategy_handler to the transport class, same as ->eh_timed_out. Downside is that scsi_host_alloc can't check for the total lack of EH anymore, but the transition period from old EH where we needed it is long gone already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [PATCH] libata-ncq: implement NCQ device configurationTejun Heo2006-05-15
| | | | | | | | | | | | | | | | | | | | Now that all NCQ related stuff are in place, implement NCQ device configuration and bump ATA_MAX_QUEUE to 32 thus activating NCQ support. Original implementation is from Jens Axboe. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-ncq: implement NCQ command translation and exclusionTejun Heo2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements NCQ command translation and exclusion. Note that NCQ commands don't use ata_rwcmd_protocol() to choose ATA command. This is because, unlike non-NCQ RW commands, NCQ commands can only be used for NCQ protocol and FUA handling is done with a flag rather than separate command. NCQ enabled device will have queue depth larger than one but no two non-NCQ commands can be issued simultaneously, neither can a non-NCQ command and NCQ commands. This patch makes ata_scsi_translate() return SCSI_MLQUEUE_DEVICE_BUSY if such exclusion is necessary. SCSI midlayer will retry the command later. As SCSI midlayer always retries once a command completes, this doesn't incur unnecessary delays and as most commands will be NCQ ones for NCQ device, so the overhead should be negligible. Initial implementation is from Jens Axboe and using SCSI_MLQUEUE_DEVICE_BUSY for exclusion is suggested by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-ncq: implement ap->qc_active, ap->sactive and complete helperTejun Heo2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | Add ap->qc_active and ap->sactive, mask of all active qcs and libata's view of the SActive register, respectively. Also, implement ata_qc_complete_multiple() which takes new qc_active mask and complete multiple qcs according to the mask. These will be used to track NCQ commands and complete them. The distinction between ap->qc_active and ap->sactive is also useful for later PM implementation. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata-ncq: rename ap->qactive to ap->qc_allocatedTejun Heo2006-05-15
| | | | | | | | | | | | | | Rename ap->qactive to ap->qc_allocated. This is to accomodate addition of ap->qc_active, mask of active qcs. Signed-off-by: Tejun Heo <htejun@gmail.com>
* | [PATCH] libata: fix irq-pio mergeTejun Heo2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | * kill ata_poll_qc_complete() and implement/use ata_hsm_qc_complete() which completes qcs in new EH compliant manner from HSM * don't print error message from ata_hsm_move(). it's responsibility of EH. * kill ATA_FLAG_NOINTR usage in bmdma EH Signed-off-by: Tejun Heo <htejun@gmail.com>
* | Merge branch 'irq-pio'Tejun Heo2006-05-15
|\ \ | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/libata-core.c include/linux/libata.h
| * \ Merge branch 'upstream'Jeff Garzik2006-04-12
| |\ \
| * \ \ Merge branch 'upstream'Jeff Garzik2006-04-04
| |\ \ \
| * | | | [PATCH] libata-dev: irq-pio minor fix 2Albert Lee2006-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | irq-pio minor fix 2: - Use qc as data for ata_pio_task(). Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | [PATCH] libata-dev: irq-pio minor fixAlbert Lee2006-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | irq-pio minor fix: - remove the redundant hsm_task_state = HSM_ST_IDLE - add devno to printk() as done in upstream Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | Merge branch 'upstream'Jeff Garzik2006-04-02
| |\ \ \ \
| * | | | | [libata] irq-pio: Fix merge mistakeJeff Garzik2006-04-02
| | | | | |
| * | | | | Merge branch 'upstream'Jeff Garzik2006-04-02
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/libata-core.c drivers/scsi/pdc_adma.c drivers/scsi/sata_mv.c drivers/scsi/sata_nv.c drivers/scsi/sata_promise.c drivers/scsi/sata_qstor.c drivers/scsi/sata_sx4.c drivers/scsi/sata_vsc.c include/linux/libata.h
| * \ \ \ \ \ Merge branch 'upstream'Jeff Garzik2006-04-01
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| * | | | | | | [PATCH] libata-dev: handle DRQ=1 ERR=1 (revised)Albert Lee2006-04-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle DRQ=1 ERR=1 situation. Revised according to what IDE try_to_flush_leftover_data() does. Changes: - For ATA PIO writes and ATAPI devices, just stop the HSM and let EH handle it. - For ATA PIO reads, read only one block of junk data and then let EH handle it. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | Merge branch 'upstream'Jeff Garzik2006-04-01
| |\ \ \ \ \ \ \
| * | | | | | | | [PATCH] libata-dev: print out information for ATAPI devices with CDB interruptsAlbert Lee2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | print out information for ATAPI devices with CDB interrupts Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | | Merge branch 'upstream'Jeff Garzik2006-03-29
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/sata_mv.c
| * \ \ \ \ \ \ \ \ Merge branch 'upstream'Jeff Garzik2006-03-29
| |\ \ \ \ \ \ \ \ \
| * | | | | | | | | | [PATCH] libata-dev: wait idle after reading the last data blockAlbert Lee2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some CD-ROM drives are slow to clear DRQ, after the last data block is read by PIO. Use ata_wait_idle() after reading the last data block. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | | | | [PATCH] libata-dev: fix the device err check sequence (respin)Albert Lee2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current irq-pio checks ERR bit and stops on ERR before it does anything else. This behavior doesn't look right. The DRQ bit should take higher precedence than the ERR bit. Changes: - Let the HSM do the data transfer whenever the device asks for DRQ bit, even if the ERR bit is set. - For DRQ=1 ERR=1, don't trust the data Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | | | | [PATCH] libata-dev: irq-pio minor fixes (respin)Albert Lee2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | irq-pio minor fixes for printk() and comments. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | | | | [PATCH] libata-dev: Make the the in_wq check as an inline functionAlbert Lee2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the the in_wq check easier to read as an inline function. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | | | | | | | [PATCH] libata-dev: ata_check_atapi_dma() fix for ATA_FLAG_PIO_POLLING LLDDsAlbert Lee2006-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ata_check_atapi_dma() fix for LLDDs with the ATA_FLAG_PIO_POLLING flag. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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