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* Merge branch 'origin' into develRussell King2009-03-2876-542/+1316
|\ | | | | | | | | Conflicts: sound/soc/pxa/pxa2xx-i2s.c
| * [libata] Improve timeout handlingAlan Cox2009-03-249-5/+83
| | | | | | | | | | | | | | | | | | | | | | | | On a timeout call a device specific handler early in the recovery so that we can complete and process successful commands which timed out due to IRQ loss or the like rather more elegantly. [Revised to exclude the timeout handling on a few devices that inherit from SFF but are not SFF enough to use the default timeout handler] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] Drain data on errorsAlan Cox2009-03-242-3/+76
| | | | | | | | | | | | | | | | | | | | | | If the device is signalling that there is data to drain after an error we should read the bytes out and throw them away. Without this some devices and controllers get wedged and don't recover. Based on earlier work by Mark Lord Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_sc1200: Activate secondary channelAlan Cox2009-03-241-2/+27
| | | | | | | | | | | | | | Implement serialize and turn on slave channel Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_artop: Serializing supportAlan Cox2009-03-241-6/+27
| | | | | | | | | | | | | | Enable both ports on the 6210 and serialize them Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] ahci: correct enclosure LED state saveDavid Milburn2009-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ahci_transmit_led_message saves off the led_state with a value that includes the port number OR'd in, this incorrect value maybe reported back in ahci_led_store. For instance, if you turn off all the leds for port 1 and cat the value back it will report 1 instead of 0. # echo 0 > /sys/class/scsi_host/host1/em_message # cat /sys/class/scsi_host/host1/em_message 1 Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] More robust parsing for IDENTIFY DEVICE multi_count fieldMark Lord2009-03-241-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make libata more robust when parsing the multi_count field from a drive's identify data. This prevents us from attempting to use dubious multi_count values ad infinitum. Reset dev->multi_count to zero and reprobe it each time through this routine, as it can change on device reset. Also ensure that the reported "maximum" value is valid and is a power of two, and that the reported "count" value is valid and also a power of two. And that the "count" value is not greater than the "maximum" value. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: fix LED blinking for SoC+NCQMark Lord2009-03-241-0/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | For Marvell SoC chips, the HDD LED does not blink when there is disk I/O if NCQ is enabled. Add a quirk that enables blink mode for the LED while NCQ is enabled on any port of a SoC host controller. Normal LED function is restored when NCQ is not enabled on any port. The code to enable the blink mode is based on earlier code and suggestions from Frans Pop, Saeed Bishara, and possibly others. Signed-off-by: Mark Lord <mlord@pobox.com> Tested-by: Frans Pop <elendil@planet.nl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: optimize IRQ coalescing for 8-port chipsMark Lord2009-03-241-14/+18
| | | | | | | | | | | | | | | | | | | | | | | | Enable use of the "all ports" IRQ coalescing optimization for GEN_II / GEN_IIE chips that have dual host-controllers (8-ports). Currently only the 6081 chip qualifies, but other chips may come along someday. Rather than each half of the chip having to satisfy a local set of coalescing thresholds, use of this feature groups all ports together under a single set of thresholds. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: implement IRQ coalescing (v2)Mark Lord2009-03-241-8/+135
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add IRQ coalescing to sata_mv (off by default). This feature can reduce total interrupt overhead for RAID setups in some situations, by deferring the interrupt signal until one or both of: a) a specified io_count (completed SATA commands) is achieved, or b) a specified time interval elapses after an IO completion. For now, module parameters are used to set the irq_coalescing_io_count and irq_coalescing_usecs (timeout) globally. These may eventually be supplemented with sysfs attributes, so that thresholds can be set on-the-fly and on a per-chip (or even per-host_controller) basis. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: cosmetic preparations for IRQ coalescingMark Lord2009-03-241-35/+27
| | | | | | | | | | | | | | | | | | | | Various cosmetic changes in preparation for the IRQ coalescing feature. Note that the various MV_IRQ_COAL_* definitions are restored/renamed in the folloup patch which adds IRQ coalescing to the driver. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata-rb532-cf: platform_get_irq() fix ignored failureFlorian Fainelli2009-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | platform_get_irq() can return -ENXIO, but since 'irq' is an unsigned int, it does not show when the IRQ resource wasn't found. Make irq an int so that we can use a single variable to test the platform_get_irq() return value. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_efar: fix *dma_maskErik Inge Bolsø2009-03-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | According to Alan: >and yes the EFAR does UDMA66. mwdma: >Yep - wrong comment. The EFAR is a sort of clone of the PIIX and I >copied the comment while EFAR don't appear to have copied the >limitation Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_radisys: fix mwdma_mask to exclude mwdma0Erik Inge Bolsø2009-03-241-1/+1
| | | | | | | | | | | | | | | | | | As noted by Alan: >Your suspicions are correct here btw - the device can only do MWDMA1 and >MWDMA2 (much like some PIIX devices) Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] convert drivers to use ata.h mode mask definesErik Inge Bolsø2009-03-2471-331/+339
| | | | | | | | | | | | | | No functional changes in this patch. Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: Blacklist HP Compaq 6720s that spins off disks during ACPI power offMaciej Rutecki2009-03-241-0/+9
| | | | | | | | | | | | | | | | | | | | Blacklist HP Compaq 6720s so that it doesn't play a "spin down, spin up, spin down" ping-pong with the hard disk during system power off. Signed-off-by: Maciej Rutecki <maciej.rutecki@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_mv: Implement direct FIS transmission via mv_qc_issue_fis().Mark Lord2009-03-241-0/+116
| | | | | | | | | | | | | | | | | | | | | | | | This is initially needed to work around NCQ errata, whereby the READ_LOG_EXT command sometimes fails when issued in the traditional (sff) fashion. Portions of this code will likely be reused for implementation of the target mode feature later on. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] Export ata_pio_queue_task() so that it can be used from sata_mv.Mark Lord2009-03-242-2/+1
| | | | | | | | | | Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_mv: Add a new mv_sff_check_status() function to sata_mv.Mark Lord2009-03-241-1/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | This is necessary for use with the upcoming "mv_qc_issue_fis()" patch, but is being added separately here for easier code review. When using command issue via the "mv_qc_issue_fis()" mechanism, the initial ATA_BUSY bit does not show in the ATA status (shadow) register. This can confuse libata! So here we add a hook to fake ATA_BUSY for that situation, until the first time a BUSY, DRQ, or ERR bit is seen. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_mv: Tighten up interrupt masking in mv_qc_issue()Mark Lord2009-03-241-13/+21
| | | | | | | | | | | | | | | | | | | | | | so that it doesn't miss any protocols. Handle future cases where a qc is specially marked for polled issue or where a particular chip version prefers interrupts over polling for PIO. This mimics the polling decision logic from ata_sff_qc_issue(). Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_mv: Enable use of (basic) DMA for ATAPI on GEN_IIE chipsMark Lord2009-03-241-24/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This also gets rid of any need for mv_mode_filter(). Using basic DMA on GEN_IIE requires setting an undocumented bit in an undocumented register. For safety, we clear that bit again when switching back to EDMA mode. To avoid a performance penalty when switching modes, we cache the register in port_priv, as already done for other regs. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_mv: cache frequently-accessed registersMark Lord2009-03-241-21/+70
| | | | | | | | | | | | | | | | | | | | Maintain a local (mv_port_priv) cache of frequently accessed registers, to avoid having to re-read them (very slow) on every transistion between EDMA and non-EDMA modes. This speeds up things like flushing the drive write cache, and anything using basic DMA transfers. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: drop intx manipulation on msi enableTejun Heo2009-03-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's no need to turn off intx explicitly on msi enable. This is automatically handled by pci. Drop it. This might be needed on machines if the BIOS turns intx off during boot. However, there's no evidence of such behavior for ahci and the only such case seems to be ICH5 PATA according to ata_piix. Also, given the way ahci operates, it's highly unlikely BIOS ever disables IRQ for the controller. However, as this change has slight possibility of introducing failure, please schedule it for #upstream. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata-rb532-cf: drop custom freeze and thawPhil Sutter2009-03-241-19/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | I'm not quite sure what freezing and thawing is used for. Tests showed that the port is being frozen at initialisation state and thawed right afterwards, then the functions were not called anymore. Dropping the complete custom code for handling the frozen state seems to work at least for a standard use case including mounting a partition, copying some files in it (in parallel) and finally removing them and unmounting the partition. Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata-rb532-cf: use ata_sff_data_xfer32()Phil Sutter2009-03-241-20/+1
| | | | | | | | | | | | | | | | | | | | | | | | The biggest difference between rb532_pata_data_xfer() and ata_sff_data_xfer32() is the call to ata_sff_pause() at the end of rb532_pata_data_xfer() which I suppose to be unnecessary since it works without. I've also tested using ata_sff_data_xfer() as replacement, but since we know that the driver supports 32bit IO, using the optimised version should be safe. Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata-rb532-cf: use ata_sff_exec_command()Phil Sutter2009-03-241-8/+0
| | | | | | | | | | | | | | | | | | The only difference between rb532_pata_exec_command() and ata_sff_exec_command() is added debugging output, so it can be dropped and the standard op used instead. Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata-rb532-cf: replace rb532_pata_finish_io()Phil Sutter2009-03-241-13/+2
| | | | | | | | | | | | | | | | | | Since the delay used internally is just the same as ata_sff_pause() uses, rb532_pata_finish_io() does exactly the same as ata_sff_pause() and thus can be replaced by the later one. Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: remove leftoversMark Lord2009-03-241-2/+0
| | | | | | | | | | | | | | Remove redundant code left over from the earlier patch 04/07. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: optimize use of mv_edma_cfgMark Lord2009-03-241-3/+6
| | | | | | | | | | | | | | | | | | | | Try and avoid unnecessary reconfiguration of the EDMA config register on every single non-EDMA I/O operation, by moving the call to mv_edma_cfg() into mv_stop_edma(). It must then also be invoked from mv_hardreset() and from mv_port_start(). Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: introduce support for ATAPI devicesMark Lord2009-03-241-4/+186
| | | | | | | | | | | | | | | | Add ATAPI support to sata_mv, using sff DMA for GEN_II chipsets, and plain old PIO for GEN_IIE. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: mv_fill_sg fixes v2Mark Lord2009-03-241-1/+3
| | | | | | | | | | | | | | | | | | Fix mv_fill_sg() to zero out the reserved word (required for ATAPI), and to include a memory barrier. This may also help with problems reported by Jens on the PPC platform. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: update ata_qc_from_tagMark Lord2009-03-241-0/+6
| | | | | | | | | | | | | | | | Update the logic in ata_qc_from_tag() to match that used in similar places elsewhere in libata. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: restructure mv_qc_issueMark Lord2009-03-241-15/+22
| | | | | | | | | | | | | | | | | | Rearrange logic in mv_qc_issue() to handle protocols other than ATA_PROT_DMA, ATA_PROT_NCQ, and ATA_PROT_PIO. This is in preparation for later enabling ATAPI support. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: rearrange mv_start_dma() and friendsMark Lord2009-03-241-28/+38
| | | | | | | | | | | | | | | | Rearrange mv_start_dma() and friends, in preparation for adding non-EDMA DMA modes, and non-EDMA interrupts, to the driver. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: cleanup chipset GENeration FLAGSMark Lord2009-03-241-17/+14
| | | | | | | | | | | | | | | | Clean up the chipset GENeration FLAGS, and rename them for consistency with other uses of GEN_XX within sata_mv. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge branch 'for-next' of ↵Russell King2009-03-253-2/+44
|\ \ | |/ | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into devel
| * ata_piix: add workaround for Samsung DB-P70Tejun Heo2009-03-131-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Samsung DB-P70 somehow botched the first ICH9 SATA port. The board doesn't expose the first port but somehow SStatus reports link online while failing SRST protocol leading to repeated probe failures and thus long boot delay. Because the BIOS doesn't carry any identifying DMI information, the port can't be blacklisted safely. Fortunately, the controller does have subsystem vendor and ID set. It's unclear whether the subsystem IDs are used only for the board but it can be safely worked around by disabling SIDPR access and just using SRST works around the problem. Even when the workaround is triggered on an unaffected board the only side effect will be missing SCR access. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Joseph Jang <josephjang@gmail.com> Reported-by: Jonghyon Sohn <mrsohn@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: Keep shadow last_ctl up to date during resetsStuart MENEFY2009-03-131-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libata keeps a shadow copy of the ATA CTL register (which is write only), and only writes to the hardware when the required value doesn't match the shadow. However this copy wasn't being maintained when performing reset functions. This could cause problems for the first operation after a reset when the correct value might not be written to the CTL register. This problem was observed when hotplugging a drive: the identify command was being issued with interrupts enabled, when they should have been disabled. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: fix MSI irq race conditionMark Lord2009-03-131-1/+2
| | | | | | | | | | | | | | | | | | | | | | Fix a (rare) race condition in mv_interrupt() when using MSI. The value of hpriv->main_irq_mask_addr can change on on the fly, and without this patch we could end up writing back a stale copy to the hardware. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into develRussell King2009-03-1310-66/+133
|\ \ | |/ | | | | | | | | Conflicts: arch/arm/mach-at91/gpio.c
| * libata: Don't trust current capacity values in identify words 57-58Robert Hancock2009-03-051-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hanno Böck reported a problem where an old Conner CP30254 240MB hard drive was reported as 1.1TB in capacity by libata: http://lkml.org/lkml/2009/2/13/134 This was caused by libata trusting the drive's reported current capacity in sectors in identify words 57 and 58 if the drive does not support LBA and the current CHS translation values appear valid. Unfortunately it seems older ATA specs were vague about what this field should contain and a number of drives used values with wrong byte order or that were totally bogus. There's no unique information that it conveys and so we can just calculate the number of sectors from the reported current CHS values. While we're at it, clean up this function to use named constants for the identify word values. Signed-off-by: Robert Hancock <hancockrwd@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: make sure port is thawed when skipping resetsTejun Heo2009-03-051-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When SCR access is available and the link is offline, softreset is skipped as it only wastes time and some controllers don't respond very well. However, the skip path forgot to thaw the port, which not only blocks further event notification from the port but also causes repeated EH invocations on the same event on drivers which rely on ->thaw() to clear events if the IRQ is shared with another device or port. This problem has always been there but is uncovered by recent sata_nv nf2/3 change which dropped hardreset support while maintaining SCR access. nf2/3 doesn't clear hotplug event mask from the interrupt handler but relies on ->thaw() to clear them. When the hardreset was there, the reset action was never skipped and the port was always thawed but, with the hardreset gone, ->prereset() determines that there's no need for softreset and both ->softreset() and ->thaw() are skipped. This leads to stuck hotplug event in the IRQ status register triggering hotplug event whenever IRQ is delieverd on the same IRQ. As the controller shares the same IRQ for both ports, this happens on every IO if one port is occpupied and the other isn't. This patch fixes the problem by making sure that the port is thawed on reset-skip path. bko#11615 reports this problem. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Robert Hancock <hancockrwd@gmail.com> Reported-by: Dan Andresan <danyer@gmail.com> Reported-by: Arne Woerner <arne_woerner@yahoo.com> Reported-by: Stefan Lippers-Hollmann <s.L-H@gmx.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_nv: fix module parameter descriptionBrandon Ehle2009-03-051-1/+1
| | | | | | | | | | | | | | | | Update MODULE_PARM_DESC for ADMA to reflect the fact that the option is disabled by default. Signed-off-by: Brandon Ehle <azverkan@yahoo.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: Add the Device IDs for MCP89 and remove IDs of MCP7B to/from ahci.cpeerchen2009-03-051-12/+12
| | | | | | | | | | | | | | | | | | Added the Device IDs for MCP89 AHCI controller. Removed the IDs of MCP7B because this chipset had been cancelled. Signed-off-by: Peer Chen <peerchen@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: don't use on-stack sense bufferTejun Heo2009-03-051-1/+1
| | | | | | | | | | | | | | | | | | | | sense_buffer is used as DMA target and shouldn't be allocated on stack. Use ap->sector_buf instead. This problem is spotted by Chuck Ebbert. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: fix dma_unmap_sg misuseFUJITA Tomonori2009-03-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libata passes the returned value of dma_map_sg() to dma_unmap_sg(),which is the misuse of dma_unmap_sg(). DMA-mapping.txt says: To unmap a scatterlist, just call: pci_unmap_sg(pdev, sglist, nents, direction); Again, make sure DMA activity has already finished. PLEASE NOTE: The 'nents' argument to the pci_unmap_sg call must be the _same_ one you passed into the pci_map_sg call, it should _NOT_ be the 'count' value _returned_ from the pci_map_sg call. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] pata_legacy: for VLB 32bit PIO don't try tricks with slopAlan Cox2009-02-251-3/+4
| | | | | | | | | | | | | | | | | | | | These devices are generally used with ATA anyway and it seems that some ATAPI will need us to issue the right number of words. Therefore as we can't switch mid burst on VLB devices we should only use 32bit I/O for suitable block sizes. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] pata_amd: program FIFOAlan Cox2009-02-251-17/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | With 32bit PIO we can use the posted write buffers, but only for 32bit I/O cycles. This means we must disable the FIFO for ATAPI where a final 16bit cycle may occur. Rework the FIFO logic so that we disable the FIFO then selectively re-enable it when we set the timings on AMD devices. Also fix a case where we scribbled on PCI config 0x41 of Nvidia chips when we shouldn't. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_mv: fix SoC interrupt breakageMark Lord2009-02-251-11/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some reason, sata_mv doesn't clear interrupt status during init when it's running on an SoC host adapter. If the bootloader has touched the SATA controller before starting Linux, Linux can end up enabling the SATA interrupt with events pending, which will cause the interrupt to be marked as spurious and then be disabled, which then breaks all further accesses to the controller. This patch makes the SoC path clear interrupt status on init like in the non-SoC case. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_it821x: resume from hibernation fails with RAID volumeOndrej Zary2009-02-251-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hibernation didn't work for me since I started to use IT8212 controller. I did some debugging (booting with no_console_suspend init=/bin/sh). Found that resume fails (2.6.28) with "serial number mismatch 'some garbage' != 'some other garbage'" and "revalidation failed" messages. That's because the controller firmware fills different serial number in the IDENTIFY every boot. The patch below fixes the resume simply clearing the serial number. The proper fix would be probably to fill in the serial number of the RAID volume instead. I assume that there must be something like that stored on the drives but I don't know where. Fix resume on pata_it821x RAID volume by clearing the serial number in IDENTIFY data, which is otherwise different on each boot. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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