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path: root/drivers/ide/ide-io.c
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* ide: Implement disk shock protection support (v4)Elias Oltmanns2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On user request (through sysfs), the IDLE IMMEDIATE command with UNLOAD FEATURE as specified in ATA-7 is issued to the device and processing of the request queue is stopped thereafter until the specified timeout expires or user space asks to resume normal operation. This is supposed to prevent the heads of a hard drive from accidentally crashing onto the platter when a heavy shock is anticipated (like a falling laptop expected to hit the floor). Port resets are deferred whenever a device on that port is in the parked state. v3: Elias Oltmanns <eo@nebensachen.de> wrote: [...] > >> 1. Make sure that no negative value is being passed to > >> jiffies_to_msecs() in ide_park_show(). > >> 2. Drop the superfluous variable hwif in ide_special_rq(). > >> 3. Skip initialisation of task and tf in ide_special_rq() if we are not > >> handling a (un)park request. > > > > Well, #3 should have been done differently because we donn't want to > > check for REQ_(UN)?PARK_HEADS more often than is necessary. > > While preparing the backport to 2.6.27, it has just occurred to me that > we need to clear the IDE_DFLAG_PARKED flag in ide_disk_pre_reset() > because this flag must not be set after *any* sort of access to the > device. v4: Fix a memory leak due to a missing blk_put_request() in issue_park_cmd(). Additionally, we should plug the queue when enqueueing the unpark request because there is no guarantee that the park timeout has not expired by then. Even though the chance for that to happen is very slim, the request might end up hanging in the queue until the next I/O operation is queued up. While at it, clean up the code a little: - make issue_park_cmd() a function of type void since nobody cares for the return value anyway; - use blk_start_queueing() instead of __blk_run_queue() since we don't have to worry about recursion; - remove a superfluous pointer deference in task_no_data_intr(). Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Cc: Jeff Garzik <jeff@garzik.org>, Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: Two fixes regarding memory allocationElias Oltmanns2008-10-13
| | | | | | | | | | | | In function ide_devset_execute() we should use __GFP_WAIT rather than GFP_KERNEL. Also, the allocation cannot possibly fail at that point. More importantly, there is a potential memory leak in the device probing code. The infrastructure seems rather complex and I hope I haven't messed anything up by trying to fix this. Signed-off-by: Elias Oltmanns <eo@nebensachen.de> [bart: remove superfluous ide_lock taking] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: ->ide_dma_clear_irq() -> ->clear_irq()Bartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | | | | | | | | | * Rename ->ide_dma_clear_irq method to ->clear_irq and move it from ide_hwif_t to struct ide_port_ops. * Move ->waiting_for_dma check inside ->clear_irq method. * Move ->dma_base check inside ->clear_irq method. piix.c: * Add ich_port_ops and remove init_hwif_ich() wrapper. There should be no functional changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: convert 'pio_mode' device setting to use DS_SYNC flagBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | * Convert 'pio_mode' device setting to use DS_SYNC flag. * Remove unused special_t.b.{set_tune,serviced} and ide_drive_t.tune_req. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove [ata_]select_tBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | | | | | * Use 'drive->dn & 1' in ide_init_disk(). * remove [ata_]select_t. While at it: * Use ATA_DEVICE_OBS define in ide_port_init_devices_data(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: sanitize ide*_pm_* enumsBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | | | | | | | | * Move ide*_pm_* enums from ide-io.c to <linux/ide.h>. * idedisk_pm_* -> ide_pm_* * ide_pm_state_* -> ide_pm_* * No need to set ide_pm_* enums to the fixed values. * Uppercase ide_pm_* enums. * Fix/update comments. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: fix HDIO_DRIVE_TASK[FILE] ioctls for CHS commands on LBA devicesBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | Add IDE_DFLAG_LBA device flag and use it instead of ->select.b.lba. Since ->tf_load uses ->select.all for ATA Device/Head register this fixes HDIO_DRIVE_TASK[FILE] ioctls for CHS commands on LBA devices. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: DMA_PIO_RETRY -> IDE_DFLAG_DMA_PIO_RETRYBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | Add IDE_DFLAG_DMA_PIO_RETRY and use it instead of ide_drive_t.state + DMA_PIO_RETRY. There should be no functional changes cause by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add device flagsBartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | | | | | | Add 'unsigned long dev_flags' to ide_drive_t and convert bitfields to IDE_DFLAG_* flags. While at it: - IDE_DFLAG_ADDRESSING -> IDE_DFLAG_LBA48 - fixup some comments - remove needless g->flags zeroing from ide*_probe() There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: Remove ide_spin_wait_hwgroup() and use special requests insteadElias Oltmanns2008-10-10
| | | | | | | | | | Use a special request for serialisation purposes and get rid of the awkward ide_spin_wait_hwgroup(). This also involves converting the ide_devset structure so it can be shared by the /proc and the ioctl code. Signed-off-by: Elias Oltmanns <eo@nebensachen.de> [bart: use rq->cmd[] directly] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: ide_id_has_flush_cache_ext() -> ata_id_flush_ext_enabled()Bartlomiej Zolnierkiewicz2008-10-10
| | | | | | | | | | | | * Add ata_id_flush_ext_enabled() inline helper to <linux/ata.h>. * ide_id_has_flush_cache_ext() -> ata_id_flush_ext_enabled() The latter one also checks if the command is marked as supported in word 83 and validity of words 83 & 86. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: ide_id_has_flush_cache() -> ata_id_flush_enabled()Bartlomiej Zolnierkiewicz2008-10-10
| | | | | | | | | | | | * Add ata_id_flush_enabled() inline helper to <linux/ata.h>. * ide_id_has_flush_cache() -> ata_id_flush_enabled() The latter one also checks if the command is marked as supported in word 83 and validity of words 83 & 86. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: include <linux/hdreg.h> only when neededBartlomiej Zolnierkiewicz2008-10-10
| | | | | | | | | | * Include <linux/ata.h> directly in <linux/ide.h> instead of through <linux/hdreg.h>. * Include <linux/hdreg.h> only when needed. Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove no longer needed ide_drive_t fieldsBartlomiej Zolnierkiewicz2008-10-10
| | | | | | Remove ->remap_0_to_1 and ->sect0 (they are always zero now). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use ATA_* defines instead of *_STAT and *_ERR onesBartlomiej Zolnierkiewicz2008-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * ERR_STAT -> ATA_ERR * INDEX_STAT -> ATA_IDX * ECC_STAT -> ATA_CORR * DRQ_STAT -> ATA_DRQ * SEEK_STAT -> ATA_DSC * WRERR_STAT -> ATA_DF * READY_STAT -> ATA_DRDY * BUSY_STAT -> ATA_BUSY * MARK_ERR -> ATA_AMNF * TRK0_ERR -> ATA_TRK0NF * ABRT_ERR -> ATA_ABORTED * MCR_ERR -> ATA_MCR * ID_ERR -> ATA_IDNF * MC_ERR -> ATA_MC * ECC_ERR -> ATA_UNC * ICRC_ERR -> ATA_ICRC * BBD_ERR -> ATA_BBK Also: * ILI_ERR -> ATAPI_ILI * EOM_ERR -> ATAPI_EOM * LFS_ERR -> ATAPI_LFS * CD -> ATAPI_COD * IO -> ATAPI_IO Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: WIN_* -> ATA_CMD_*Bartlomiej Zolnierkiewicz2008-10-10
| | | | | | | | | | | | | | | | | | | | | * Use ATA_CMD_* defines instead of WIN_* ones. While at it: * EXABYTE_ENABLE_NEXT -> ATA_EXABYTE_ENABLE_NEST * SETFEATURES_{EN,DIS}_WCACHE -> SETFEATURES_WC_{ON,OFF} * SETFEATURES_{EN,DIS}_AAM -> SETFEATURES_AAM_{ON,OFF} * SMART_* -> ATA_SMART_* * Remove stale comment from ide-proc.c. Partially based on earlier work by Chris Wedgwood. Acked-by: Chris Wedgwood <cw@f00f.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove superfluous check from ide_disk_special()Bartlomiej Zolnierkiewicz2008-10-10
| | | | | | | This condition is checked by both ide_disk_init_mult_count() and set_multcount() so no need to do it again in ide_disk_special(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add struct ide_tp_ops (take 2)Bartlomiej Zolnierkiewicz2008-07-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add struct ide_tp_ops for transport methods. * Add 'const struct ide_tp_ops *tp_ops' to struct ide_port_info and ide_hwif_t. * Set the default hwif->tp_ops in ide_init_port_data(). * Set host driver specific hwif->tp_ops in ide_init_port(). * Export ide_exec_command(), ide_read_status(), ide_read_altstatus(), ide_read_sff_dma_status(), ide_set_irq(), ide_tf_{load,read}() and ata_{in,out}put_data(). * Convert host drivers and core code to use struct ide_tp_ops. * Remove no longer needed default_hwif_transport(). * Cleanup ide_hwif_t from methods that are now in struct ide_tp_ops. While at it: * Use struct ide_port_info in falconide.c and q40ide.c. * Rename ata_{in,out}put_data() to ide_{in,out}put_data(). v2: * Fix missing convertion in ns87415.c. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ->set_irq methodBartlomiej Zolnierkiewicz2008-07-23
| | | | | | | | | | | | | | | Add ->set_irq method for setting nIEN bit of ATA Device Control register and use it instead of ide_set_irq(). While at it: * Use ->set_irq in init_irq() and do_reset1(). * Don't use HWIF() macro in ide_check_pm_state(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ->read_status methodBartlomiej Zolnierkiewicz2008-07-23
| | | | | | | | | | | | | | | * Remove ide_read_status() inline helper. * Add ->read_status method for reading ATA Status register and use it instead of ->INB. While at it: * Don't use HWGROUP() macro. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ->exec_command methodBartlomiej Zolnierkiewicz2008-07-23
| | | | | | | | | Add ->exec_command method for writing ATA Command register and use it instead of ->OUTBSYNC. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* IDE: Remove unused codeElias Oltmanns2008-07-16
| | | | | | | | | | | Remove some code which has been made obsolete and hasn't worked properly before anyway. Part of the infrastructure may be reintroduced in a follow up patch to implement a working command aborting facility. Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk> Cc: "Randy Dunlap" <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* IDE: Fix HDIO_DRIVE_RESET handlingElias Oltmanns2008-07-16
| | | | | | | | | | | | | Currently, the code path executing an HDIO_DRIVE_RESET ioctl is broken in various ways. Most importantly, it is treated as an out of band request in an illegal way which may very likely lead to system lock ups. Use the drive's request queue to avoid this problem (and fix a locking issue for free along the way). Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk> Cc: "Randy Dunlap" <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove action argument in ide_do_drive_cmdFUJITA Tomonori2008-07-15
| | | | | | | | | | | | | | | ide_do_drive_cmd is called only with ide_preempt action argument. So we can remove the action argument in ide_do_drive_cmd and ide_action_t typedef. This patch also includes two minor cleanups: 1) ide_do_drive_cmd always succeeds so we don't need the return value; 2) the callers use blk_rq_init before ide_do_drive_cmd so there is no need to initialize rq->errors. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: pass 'hwif *' instead of 'drive *' to ->OUTBSYNC methodBartlomiej Zolnierkiewicz2008-07-15
| | | | | | There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move IRQ unmasking out from ->tf_load methodBartlomiej Zolnierkiewicz2008-07-15
| | | | | | | | | Move IRQ unmasking out from ->tf_load method to its users. There should be no functional changes caused by this patch (SELECT_MASK() is NOP except for hpt366, icside and sgiioc4). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove try_to_flush_leftover_data()Bartlomiej Zolnierkiewicz2008-07-15
| | | | | | | | | Just use the new & shiny ide_pad_transfer() helper instead. Also remove the superfluous check for 'drive->media == ide_disk' while at it (ide_ata_error() is used only for ide_disk devices). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_init_drive_cmdFUJITA Tomonori2008-07-15
| | | | | | | | | | | ide_init_drive_cmd just calls blk_rq_init. This converts the users of ide_init_drive_cmd to use blk_rq_init directly and removes ide_init_drive_cmd. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_wait/head_wait path in ide_do_drive_cmdFUJITA Tomonori2008-07-15
| | | | | | | | | | | Now all the users of ide_do_drive_cmd using ide_wait/head_wait are converted to use blk_execute_rq this removes the ide_wait/head_wait path in ide_do_drive_cmd. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use __generic_unplug_device() in ide_do_drive_cmd() (take 2)Bartlomiej Zolnierkiewicz2008-07-15
| | | | | | | | | | | | | | | | | | | | | | * Call __elv_add_request() with 'plug' == 1 (so the device will be plugged) and then use __generic_unplug_device() instead of calling ide_do_request() directly. v2: * For blk_pm_resume_request() requests the queue is stopped so we need to call ->request_fn explicitly. Thanks to: - Rafael for reporting/bisecting the bug - Borislav/Rafael for testing the fix This is a preparation for converting IDE to use blk_execute_rq(). Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: set REQ_PREEMPT request flag in ide_do_drive_cmd() usersBartlomiej Zolnierkiewicz2008-07-15
| | | | | | | | | | | | | | | | | | | | * Set REQ_PREEMPT request flag in ide_do_drive_cmd() users for ide_preempt and ide_head_wait action types. * Remove setting REQ_PREEMPT from ide_do_drive_cmd(). While at it: * Set 'where' variable outside ide_lock. This is a preparation for converting IDE to use blk_execute_rq(). There should be no functional changes caused by this patch. Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use blk_rq_init() to initialize the requestFUJITA Tomonori2008-04-29
| | | | | | | | | | | | | This converts ide to use blk_rq_init to initialize the request. This is a preparation for large command support, which needs to initialize the request in a proper way (that is, just doing a memset() will not work). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* ide: add ide_pad_transfer() helperBartlomiej Zolnierkiewicz2008-04-28
| | | | | | | | | | | | * Add ide_pad_transfer() helper (which uses ->{in,out}put_data methods internally so the transfer is also padded to drive+host requirements) and use it instead of ide_atapi_{write_zeros,discard_data}(). * Remove no longer needed ide_atapi_{write_zeros,discard_data}(). Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ->tf_load and ->tf_read methodsBartlomiej Zolnierkiewicz2008-04-28
| | | | | | | | | | | | | | * Add ->tf_load and ->tf_read methods to ide_hwif_t and set the default methods in default_hwif_transport(). * Use ->tf_{load,read} instead o calling ide_tf_{load,read}() directly. * Make ide_tf_{load,read}() static. There should be no functional changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move ide_tf_{load,read} to ide-iops.cBartlomiej Zolnierkiewicz2008-04-28
| | | | Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: factor out debugging code from ide_tf_load()Bartlomiej Zolnierkiewicz2008-04-28
| | | | | | | Factor out debugging code from ide_tf_load() to ide_tf_dump() helper and update ide_tf_load() users accordingly. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: always use ->OUTBSYNC method for executing commandsBartlomiej Zolnierkiewicz2008-04-28
| | | | | | | Always use ->OUTBSYNC method for executing commands so the posting is done if needed (this affects only pmac and scc_pata host drivers at the moment). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: merge ->atapi_*put_bytes and ->ata_*put_data methodsBartlomiej Zolnierkiewicz2008-04-28
| | | | | | | | | | | | | | | * Merge ->atapi_{in,out}put_bytes and ->ata_{in,out}put_data methods into new ->{in,out}put_data methods which take number of bytes to transfer as an argument and always do padding. While at it: * Use 'hwif' or 'drive->hwif' instead of 'HWIF(drive)'. There should be no functional changes caused by this patch (all users of ->ata_{in,out}put_data methods were using multiply-of-4 word counts). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* falconide/q40ide: add ->atapi_*put_bytes and ->ata_*put_data methods (take 2)Bartlomiej Zolnierkiewicz2008-04-28
| | | | | | | | | | | | | | | | | | | | | | | * Add ->atapi_{in,out}put_bytes and ->ata_{in,out}put_data methods to falconide and q40ide host drivers (->ata_* methods are implemented on top of ->atapi_* methods so they also do byte-swapping now). * Cleanup atapi_{in,out}put_bytes(). v2: * Add 'struct request *rq' argument to ->ata_{in,out}put_data methods and don't byte-swap disk fs requests (we shouldn't un-swap fs requests because fs itself is stored byte-swapped on the disk) - this is how things were done before the patch (ideally device mapper should be used instead but it would break existing setups and would have some performance impact). Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michael Schmitz <schmitz@debian.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Richard Zidlicky <rz@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add struct ide_io_ports (take 3)Bartlomiej Zolnierkiewicz2008-04-27
| | | | | | | | | | | | | | | | | | | | | * Add struct ide_io_ports and use it instead of `unsigned long io_ports[]` in ide_hwif_t. * Rename io_ports[] in hw_regs_t to io_ports_array[]. * Use un-named union for 'unsigned long io_ports_array[]' and 'struct ide_io_ports io_ports' in hw_regs_t. * Remove IDE_*_OFFSET defines. v2: * scc_pata.c build fix from Stephen Rothwell. v3: * Fix ctl_adrr typo in Sparc-specific part of ns87415.c. (Noticed by Andrew Morton) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add struct ide_dma_ops (take 3)Bartlomiej Zolnierkiewicz2008-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add struct ide_dma_ops and convert core code + drivers to use it. While at it: * Drop "ide_" prefix from ->ide_dma_end and ->ide_dma_test_irq methods. * Drop "ide_" "infixes" from DMA methods. * au1xxx-ide.c: - use auide_dma_{test_irq,end}() directly in auide_dma_timeout() * pdc202xx_old.c: - drop "old_" "infixes" from DMA methods * siimage.c: - add siimage_dma_test_irq() helper - print SATA warning in siimage_init_one() * Remove no longer needed ->init_hwif implementations. v2: * Changes based on review from Sergei: - s/siimage_ide_dma_test_irq/siimage_dma_test_irq/ - s/drive->hwif/hwif/ in idefloppy_pc_intr(). - fix patch description w.r.t. au1xxx-ide changes - fix au1xxx-ide build - fix naming for cmd64*_dma_ops - drop "ide_" and "old_" infixes - s/hpt3xxx_dma_ops/hpt37x_dma_ops/ - s/hpt370x_dma_ops/hpt370_dma_ops/ - use correct DMA ops for HPT302/N, HPT371/N and HPT374 - s/it821x_smart_dma_ops/it821x_pass_through_dma_ops/ v3: * Two bugs slipped in v2 (noticed by Sergei): - use correct DMA ops for HPT374 (for real this time) - handle HPT370/HPT370A properly Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add struct ide_port_ops (take 2)Bartlomiej Zolnierkiewicz2008-04-26
| | | | | | | | | | | | | | | | | | | | | * Move hooks for port/host specific methods from ide_hwif_t to 'struct ide_port_ops'. * Add 'const struct ide_port_ops *port_ops' to 'struct ide_port_info' and ide_hwif_t. * Update host drivers and core code accordingly. While at it: * Rename ata66_*() cable detect functions to *_cable_detect() to match the standard naming. (Suggested by Sergei Shtylyov) v2: * Fix build for bast-ide. (Noticed by Andrew Morton) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: sanitize handling of IDE_HFLAG_NO_SET_MODE host flagBartlomiej Zolnierkiewicz2008-04-26
| | | | | | | | | | | | | | * Check for IDE_HFLAG_NO_SET_MODE host flag in ide_set_pio(), ide_set_[pio,dma]_mode(), ide_set_xfer_rate() and set_pio_mode(). * Remove no longer needed IDE_HFLAG_NO_SET_MODE host flag checking from ide_tune_dma(). * Remove superfluous ->set_pio_mode checking from do_special(). This is a part of preparations for adding 'struct ide_port_ops'. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove IDE_*_REG macrosBartlomiej Zolnierkiewicz2008-04-17
| | | | | | | | | | | | | * Add IDE_{ALTSTATUS,IREASON,BCOUNTL,BCOUNTH}_OFFSET defines. * Remove IDE_*_REG macros - this results in more readable and slightly smaller code. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide-disk: fix flush requests (take 2)Bartlomiej Zolnierkiewicz2008-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 813a0eb233ee67d7166241a8b389b6a76f2247f9 Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Date: Fri Jan 25 22:17:10 2008 +0100 ide: switch idedisk_prepare_flush() to use REQ_TYPE_ATA_TASKFILE requests ... broke flush requests. Allocating IDE command structure on the stack for flush requests is not a very brilliant idea: - idedisk_prepare_flush() only prepares the request and it doesn't wait for it to be completed - there are can be multiple flush requests queued in the queue Fix the problem (per hints from James Bottomley) by: - dynamically allocating ide_task_t instance using kmalloc(..., GFP_ATOMIC) - adding new taskfile flag (IDE_TFLAG_DYN) - calling kfree() in ide_end_drive_command() if IDE_TFLAG_DYN is set (while at it rename 'args' to 'task' and fix whitespace damage) [ This will be fixed properly before 2.6.25 but this bug is rather critical and the proper solution requires some more work + testing. ] Thanks to Sebastian Siewior and Christoph Hellwig for reporting the problem and testing patches (extra thanks to Sebastian for bisecting it to the guilty commmit). Tested-by: Sebastian Siewior <ide-bug@ml.breakpoint.cc> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: another possible ide panic fix for blk-end-requestKiyoshi Ueda2008-02-10
| | | | | | | | | | | | | | | | | | | | | | I have reviewed all blk-end-request patches again to confirm whether there are any similar problems with the last week's ide-cd panic: http://lkml.org/lkml/2008/1/29/140 And I found a possible similar bug in ide-io change: ide_end_drive_cmd() could be called for blk_pc_request() which could have bios. To complete such requests correctly, we need to pass the actual size of the request. Otherwise, __blk_end_request() returns 1 because the request still has bios, and the system will BUG() unnecessarily. The following patch fixes the bug and should be applied on top of Linus' git. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ide_read_error() inline helperBartlomiej Zolnierkiewicz2008-02-05
| | | | | Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ide_read_[alt]status() inline helpersBartlomiej Zolnierkiewicz2008-02-05
| | | | | Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: fix ide_intr() for non-PCI devices and CONFIG_BLK_DEV_IDEPCI=yBartlomiej Zolnierkiewicz2008-02-01
| | | | | | | | 'hwif->pci_dev && !hwif->pci_dev->vendor' condition is never true, check for 'hwif->chipset != ide_pci' instead. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* blk_end_request: changing ide normal caller (take 4)Kiyoshi Ueda2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts "normal" parts of ide to use blk_end_request interfaces. Related 'uptodate' arguments are converted to 'error'. The conversion of 'uptodate' to 'error' is done only for the internal function, __ide_end_request(). ide_end_request() was not changed since it's exported and used by many ide drivers. With this patch, blkdev_dequeue_request() in __ide_end_request() is moved to blk_end_request, since blk_end_request takes care of dequeueing request like below: if (!list_empty(&rq->queuelist)) blkdev_dequeue_request(rq); In the case of ide, o 'dequeue' variable of __ide_end_request() is 1 only when the request is still linked to the queue (i.e. rq->queuelist is not empty) o 'dequeue' variable of __ide_end_request() is 0 only when the request has already been removed from the queue (i.e. rq->queuelist is empty) So blk_end_request can handle it correctly although ide always run thought the code above. Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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