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path: root/drivers/ata
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2008-05-19sata_mv: ensure empty request queue for FBS-NCQ EHMark Lord
Check for an empty request queue before stopping EDMA after a FBS-NCQ error, as per recommendation from the Marvell datasheet. This ensures that the EDMA won't suddenly become active again just after our subsequent check of the empty/idle bits. Also bump DRV_VERSION. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: cache main_irq_mask register in hprivMark Lord
Part five of simplifying/fixing handling of the main_irq_mask register to resolve unexpected interrupt issues observed in 2.6.26-rc*. Keep a cached copy of the main_irq_mask so that we don't have to stall the CPU to read it on every pass through mv_interrupt. This significantly speeds up interrupt handling, both for sata_mv, and for any other driver/device sharing the same PCI IRQ line. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: disregard masked irqsMark Lord
Part four of simplifying/fixing handling of the main_irq_mask register to resolve unexpected interrupt issues observed in 2.6.26-rc*. Ignore masked IRQs in mv_interrupt(). This prevents "unexpected device interrupt while idle" messages. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: fix pmp drives not foundMark Lord
Part three of simplifying/fixing handling of the main_irq_mask register to resolve unexpected interrupt issues observed in 2.6.26-rc*. Partially fix a reported bug whereby we sometimes miss seeing drives on a port-multiplier, as reported by Gwendal Grignou <gwendal@google.com>. The problem was that we were receiving unexpected interrupts during EH from POLLed commands while accessing port-multiplier registers. These unexpected interrupts can be prevented by masking the DONE_IRQ bit for the port whenever not operating in EDMA mode. Also fix port_stop() to mask all port interrupts. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: consolidate main_irq_mask updatesMark Lord
Part two of simplifying/fixing handling of the main_irq_mask register to resolve unexpected interrupt issues observed in 2.6.26-rc*. Consolidate all updates of the host main_irq_mask register into a single function. This simplifies maintenance, and also prepares the way for caching it (later). No functionality changes in this update. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: don't blindly enable IRQsMark Lord
Part one of simplifying/fixing handling of the main_irq_mask register to resolve unexpected interrupt issues observed in 2.6.26-rc*. Don't blindly enable port IRQs at host init time. Instead, enable only the bits that we want, which in this case is simply the PCI_ERR bit. The per-port bits can wait until the ports are reset/probed for devices. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: async notify for genIIe onlyMark Lord
Now that we handle the FIS_IRQ_CAUSE register correctly, we can also now handle SATA asynchronous notification events. So enable them, but only for the more modern GenIIe chips. (older chips have unaddressed errata issues related to this). This fixes hot plug/unplug for port-muliplier ports. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: group genIIe flagsMark Lord
Group all of the flags for GenIIe devices into a common definition, to ensure that any updates to them are shared by all GenIIe devices. This will help make future maintenance somewhat simpler. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: fis irq register fixesMark Lord
Fix handling of the FIS_IRQ_CAUSE register in sata_mv. This register exists *only* on GenIIe devices, so don't bother writing to it on older chips. Also, it has to be read/cleared in mv_err_intr() before clearing the main ERR_IRQ_CAUSE register. This keeps sata_mv from getting stuck forever on certain error types. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19sata_mv: always do softresetMark Lord
Always request a softreset after hardreset succeeds. This fixes a regression reported by Martin Michlmayr <tbm@cyrius.com>. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19avr32/pata: avoid unnecessary memset (updated after comments)Christophe Jaillet
Remove an explicit memset(.., 0, ...) to a variable allocated with kzalloc (i.e. 'info'). Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-19pata-bf54x: Set ATAPI HSM to control IDE device terminate sequence.Sonic Zhang
Set ATAPI host state machine to control IDE device terminate sequence. Some IDE harddisk may assert terminate sequence in the middle of a formal DMA transaction and resume later. Bit DETECT_TERM in ATAPI_CTRL register determines whether the ATAPI host state machine or the kernel driver should take care of this case. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06pata_atiixp: Don't disableAlan Cox
A couple of distributions (Fedora, Ubuntu) were having weird problems with the ATI IXP series PATA controllers being reported as simplex. At the heart of the problem is that both distros ignored the recommendations to load pata_acpi and ata_generic *AFTER* specific host drivers. The underlying cause however is that if you D3 and then D0 an ATI IXP it helpfully throws away some configuration and won't let you rewrite it. Add checks to ata_generic and pata_acpi to pin ATIIXP devices. Possibly the real answer here is to quirk them and pin them, but right now we can't do that before they've been pcim_enable()'d by a driver. I'm indebted to David Gero for this. His bug report not only reported the problem but identified the cause correctly and he had tested the right values to prove what was going on [If you backport this for 2.6.24 you will need to pull in the 2.6.25 removal of the bogus WARN_ON() in pcim_enagle] Signed-off-by: Alan Cox <alan@redhat.com> Tested-by: David Gero <davidg@havidave.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: update intro comment, up the version and drop EXPERIMENTALTejun Heo
sata_inic162x is now ready for production use. Bump the version, explain what's working and what's not and drop EXPERIMENTAL. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: add cardbus supportTejun Heo
When attached to cardbus, mmio region is at BAR 1. Other than that, everything else is the same. Add support for it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: kill now unused SFF related stuffTejun Heo
sata_inic162x now doesn't use any SFF features. Remove all SFF related stuff. * Mask unsolicited ATA interrupts. This removes our primary source of spurious interrupts and spurious interrupt handling can be tightened up. There's no need to clear ATA interrupts by reading status register either. * Don't dance with IDMA_CTL_ATA_NIEN and simplify accesses to IDMA_CTL. * Inherit from sata_port_ops instead of ata_sff_port_ops. * Don't initialize or use ioaddr. There's no need to map BAR0-4 anymore. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: use IDMA for ATAPI commandsTejun Heo
Use IDMA for ATAPI commands. Write and some misc commands time out when executed using ATAPI_PROT_DMA but ATAPI_PROT_PIO works fine. As PIO is driven by DMA too, it doesn't make any noticeable difference for native SATA devices. inic_check_atapi_dma() is implemented to force PIO for those ATAPI commands. After this change, sata_inic162x issues all commands using IDMA. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: use IDMA for non DMA ATA commandsTejun Heo
Use IDMA for PIO and non-data commands. This allows sata_inic162x to safely drive LBA48 devices. Kill inic_dev_config() which contains code to reject LBA48 devices. With this change, status checking in inic_qc_issue() to avoid hard lock up after hotplug can go away too. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: kill now unused bmdma related stuffTejun Heo
sata_inic162x doesn't use BMDMA anymore. Kill bmdma related stuff. * prdctl manipulation * port IRQ mask manipulation * inherit ATA_BASE_SHT instead of ATA_BMDMA_SHT * BMDMA methods Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: use IDMA for ATA_PROT_DMATejun Heo
The modified driver on initio site has enough clue on how to use IDMA. Use IDMA for ATA_PROT_DMA. * LBA48 now works as long as it uses DMA (LBA48 devices still aren't allowed as it can destroy data if PIO is used for any reason). * No need to mask IRQs for read DMAs as IDMA_DONE is properly raised after transfer to memory is actually completed. There will be some spurious interrupts but host_intr will handle it correctly and manipulating port IRQ mask interacts badly with the other port for some reason, so command type dependent port IRQ masking is not used anymore. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: update TF read handlingTejun Heo
inic162x can't reliably read back TF or at least we don't know how to do it yet. The only values which seem reliable are status and error. This patch updates access to TF. * implement inic_tf_read() which reads the TF area in mmio area * implement custom inic_qc_fill_rtf() which only returns true if status indicates device error. it'll be returning bogus addresses for device errors but it'll be able to report why it failed at least. * implement custom inic_check_ready() and use ata_wait_after_reset() instead of the SFF version. * use inic_tf_read() for classification. This is not perfect but it fixes hotplug detection failure and at least makes the driver report 0's instead of random garbages while reporting valid status and error for device errors. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: add / update constantsTejun Heo
* add a bunch of constants, most are from the datasheet, a few undocumented ones are from initio's modified driver * HCTL_PWRDWN is bit 12 not 13 This is in preparation of further inic162x updates. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_inic162x: misc clean upsTejun Heo
* use larger indents for structure member definitions * kill unused variable @addr in inic_scr_write() * kill unnecessary flushes in inic_freeze/thaw() * kill buggy explicit kfree() on devres managed port private data This is in preparation of further inic162x updates. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv use hweight16() for bit counting (V2)Mark Lord
Some tidying as suggested by Grant Grundler. Nuke local bit-counting function from sata_mv in favour of using hweight16(). Also add a short explanation for the 15msec timeout used when waiting for empty/idle. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv NCQ-EH for FIS-based switchingMark Lord
Convert sata_mv's EH for FIS-based switching (FBS) over to the sequence recommended by Marvell. This enables us to catch/analyze multiple failed links on a port-multiplier when using NCQ. To do this, we clear the ERR_DEV bit in the EDMA Halt-Conditions register, so that the EDMA engine doesn't self-disable on the first NCQ error. Our EH code sets the MV_PP_FLAG_DELAYED_EH flag to prevent new commands being queued while we await completion of all outstanding NCQ commands on all links of the failed PM. The SATA Test Control register tells us which links have failed, so we must only wait for any other active links to finish up before we stop the EDMA and run the .error_handler afterward. The patch also includes skeleton code for handling of non-NCQ FBS operation. This is more for documentation purposes right now, as that mode is not yet enabled in sata_mv. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv delayed eh handlingMark Lord
Introduce a new "delayed error handling" mechanism in sata_mv, to enable us to eventually deal with multiple simultaneous NCQ failures on a single host link when a PM is present. This involves a port flag (MV_PP_FLAG_DELAYED_EH) to prevent new commands being queued, and a pmp bitmap to indicate which pmp links had NCQ errors. The new mv_pmp_error_handler() uses those values to invoke ata_eh_analyze_ncq_error() on each failed link, prior to freezing the port and passing control to sata_pmp_error_handler(). This is based upon a strategy suggested by Tejun. For now, we just implement the delayed mechanism. The next patch in this series will add the multiple-NCQ EH code to take advantage of it. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06libata: export ata_eh_analyze_ncq_errorMark Lord
Export ata_eh_analyze_ncq_error() for subsequent use by sata_mv, as suggested by Tejun. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv new mv_port_intr functionMark Lord
Separate out the inner loop body of mv_host_intr() into it's own function called mv_port_intr(). This should help maintainabilty. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv fix mv_host_intr bug for hc_irq_causeMark Lord
Remove the unwanted reads of hc_irq_cause from mv_host_intr(), thereby removing a bug whereby we were not always reading it when needed.. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv NCQ and SError fixes for mv_err_intrMark Lord
Sigh. Undo some earlier changes to mv_port_intr(), so that we now read/clear SError again in all cases. Arrange the top of the function to be as close as possible to what we need for a later update (in this series) for ERR_DEV handling. Fix things so that libata-eh can attempt a READ_LOG_EXT_10H in response to a failed NCQ command, by just doing a local mv_eh_freeze() rather than ata_port_freeze(). This will now fully handle NCQ errors much of the time, but more fixes are needed for FBS/PMP, and for certain chip errata. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv rearrange mv_config_fbsMark Lord
Rearrange mv_config_fbs() to more closely follow the (corrected) datasheet recommendations for NCQ and FIS-based switching (FBS). Also, maintain a port flag to let us know when FBS is enabled. We will make more use of that flag later in this patch series. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv errata workaround for sata25 part 1Mark Lord
Part 1 of workaround for errata "sata#25" for the 60x1 series (the second half of this errata workaround is still in development. Bit22 of the GPIO port has to be set "on" when in NCQ mode. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv new mv_qc_defer methodMark Lord
The EDMA engine cannot tolerate a mix of NCQ/non-NCQ commands, and cannot be used for PIO at all. So we need to prevent libata from trying to feed us such mixtures. Introduce mv_qc_defer() for this purpose, and use it for all chip versions. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv wait for empty+idleMark Lord
When performing EH, it is recommended to wait for the EDMA engine to empty out requests-in-progress before disabling EDMA. Introduce code to poll the EDMA_STATUS register for idle/empty bits before disabling EDMA. For non-EH operation, this will normally exit without delay, other than the register read. A later series of patches may focus on eliminating this and various other register reads (when possible) throughout the driver, but for now we're focussing on solid reliablity. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv pci featuresMark Lord
Some of the GenIIe EDMA optimizations should not be used for non-PCI (SOC) devices, and nor for certain configurations of conventional PCI (non PCI-X, PCIe) buses. Logic taken/simplified from that in the Marvell proprietary driver. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06sata_mv more cosmetic changesMark Lord
More cosmetic changes; no code changes. -- try and improve consistency of naming. -- add missing _OFS to tails of register offset definitions. -- rename mv_setup_ifctl() to mv_setup_ifcfg(), since that's what it really does. -- remove/move some dead comments Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06libata: Add Intel SCH PATA driverAlek Du
This patch adds Intel SCH chipsets (AF82US15W, AF82US15L, AF82UL11L) PATA controller support. Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06ata_piix: verify SIDPR access before enabling itTejun Heo
On certain configurations (certain macbooks), even though all the conditions for SIDPR access described in the datasheet are met, actually reading those registers just returns 0 and have no effect on write. Verify SIDPR is actually working before enabling it. This is reported by Ryan Roth in bz#10512. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Ryan Roth <ryan.roth@ch2m.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06libata: improve post-reset device ready testTejun Heo
Some controllers (jmb and inic162x) use 0x77 and 0x7f to indicate that the device isn't ready yet. It looks like they use 0xff if device presence is detected but connection isn't established. 0x77 or 0x7f after connection is established and use the value from signature FIS after receiving it. This patch implements ata_check_ready(), which takes TF status value and determines whether the port is ready or not considering the above and other conditions, and use it in @check_ready() functions. This is safe as both 0x77 and 0x7f aren't valid ready status value even though they have BSY bit cleared. This fixes hot plug detection failures which can be triggered with certain drives if they aren't already spun up when the data connector is hot plugged. Tested on sil, sil24, ahci (jmb/ich), piix and inic162x combined with eight drives from all major vendors. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29ahci: SB600 ahci can't do MSI, blacklist that capabilityTejun Heo
This fixes bz#10507. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Shane Huang <Shane.Huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29libata: More TSSTcorp pain, keep in sync with legacy IDEAlan Cox
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29pata_via: Fix 6410 misdetectAlan Cox
The discrete VIA ATA chips don't have 0x40 enable bits. We check that properly in one location but not another. This causes some users 6410 RAID cards to be incorrectly skipped. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29[libata] pata_atiixp: fix PIO timing data misprogrammingJeff Garzik
Use correct variable, achieve desired result... Spotted by LKML/linux-ide poster whose name I lost (apologies!) Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29Fix bug - Implement bfin ata interrupt handler to avoid "irq 68 nobody ↵Sonic Zhang
cared" (v2) Return IRQ_HANDLED when bfin ata device is busy. http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3513 v1-v2: - fold api breakage fixing patch together. - mark 'static', not 'inline'. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29sata_mv: Improve naming of main_irq cause/mask identifiersMark Lord
Tidy up naming of things associated with the PCI / SOC chip "main irq cause/mask" registers, as inspired by Jeff. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29libata-scsi: improve rbuf handling for simulated commandsTejun Heo
Buffer length handling in simulated commands is error-prone and full of bugs. There are a number of places where necessary length checks are missing and if the output buffer is passed in as sglist, nothing works. This patch adds a static buffer ata_scsi_rbuf which is sufficiently large to handle the larges output from simulated commands (4k currently), let all simulte functions write to the buffer and removes all length checks as we know that there always is enough buffer space. Copying in (for ATAPI inquiry fix up) and out are handled by sg_copy_to/from_buffer() behind ata_scsi_rbuf_get/put() interface which handles sglist properly. This patch is inspired from buffer length check fix patch from Petr Vandrovec. Updated to use sg_copy_to/from_buffer() as suggested by FUJITA Tomonori. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Petr Vandrovec <petr@vmware.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29libata-scsi: clean up inquiry / mode sense related functionsTejun Heo
* make ata_scsiop_*() static * make ata_scsi_set_sense() static and move it above its users * make ata_scsi_rbuf_fill() static * kill unused ata_scsi_badcmd() Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29[MIPS] ATA: Rename routerboard 500 to 532Ralf Baechle
The platform is actually named routerboard 532 so let's call it this. This patch only rename files, Kconfig and C symbols; no functional changes. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-28typo in sata_fslAl Viro
it's ata_link, not ata_linke Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-25pata_bf54x: decrease count first.Roel Kluin
When count reaches 0 the postfix decrement still subtracts (to -1), so bfin_reset_controller() returns as if the busy flag was cleared while it was not. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>