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path: root/drivers/ide/ide-taskfile.c
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* Merge branch 'for-2.6.31' of ↵Linus Torvalds2009-06-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 * 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (29 commits) ide: re-implement ide_pci_init_one() on top of ide_pci_init_two() ide: unexport ide_find_dma_mode() ide: fix PowerMac bootup oops ide: skip probe if there are no devices on the port (v2) sl82c105: add printk() logging facility ide-tape: fix proc warning ide: add IDE_DFLAG_NIEN_QUIRK device flag ide: respect quirk_drives[] list on all controllers hpt366: enable all quirks for devices on quirk_drives[] list hpt366: sync quirk_drives[] list with pdc202xx_{new,old}.c ide: remove superfluous SELECT_MASK() call from do_rw_taskfile() ide: remove superfluous SELECT_MASK() call from ide_driveid_update() icside: remove superfluous ->maskproc method ide-tape: fix IDE_AFLAG_* atomic accesses ide-tape: change IDE_AFLAG_IGNORE_DSC non-atomically pdc202xx_old: kill resetproc() method pdc202xx_old: don't call pdc202xx_reset() on IRQ timeout pdc202xx_old: use ide_dma_test_irq() ide: preserve Host Protected Area by default (v2) ide-gd: implement block device ->set_capacity method (v2) ...
| * ide: remove superfluous SELECT_MASK() call from do_rw_taskfile()Bartlomiej Zolnierkiewicz2009-06-07
| | | | | | | | | | | | | | | | | | | | | | | | With ->write_devctl method call (which unmasks drive IRQ) preceding SELECT_MASK() call there is really no need for the latter. Moreover with the combination of HPT36x controller and the drive on the quirk_drives[] list this can result in superfluous enable_irq() call which in turn will trigger WARN() in __enable_irq(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * ide: replace special_t typedef by IDE_SFLAG_* flagsBartlomiej Zolnierkiewicz2009-05-17
| | | | | | | | | | | | | | | | | | | | | | Replace: - special_t typedef by IDE_SFLAG_* flags - 'special_t special' ide_drive_t's field by 'u8 special_flags' one 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-taskfile: don't abuse rq->bufferTejun Heo2009-04-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: rq->buffer usage cleanup ide_raw_taskfile() directly uses rq->buffer to carry pointer to the data buffer. This complicates both block interface and ide backend request handling. Use blk_rq_map_kern() instead and drop special handling for REQ_TYPE_ATA_TASKFILE from ide_map_sg(). Note that REQ_RW setting is moved upwards as blk_rq_map_kern() uses it to initialize bio rw flag. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk>
* | ide: convert to rq pos and nr_sectors accessorsTejun Heo2009-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ide doesn't manipulate request fields anymore and thus all hard and their soft equivalents are always equal. Convert all references to accessors. [ Impact: use pos and nr_sectors accessors ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | ide-taskfile: don't abuse rq->bufferTejun Heo2009-04-28
|/ | | | | | | | | | | | | | | Impact: rq->buffer usage cleanup ide_raw_taskfile() directly uses rq->buffer to carry pointer to the data buffer. This complicates both block interface and ide backend request handling. Use blk_rq_map_kern() instead and drop special handling for REQ_TYPE_ATA_TASKFILE from ide_map_sg(). Note that REQ_RW setting is moved upwards as blk_rq_map_kern() uses it to initialize bio rw flag. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk>
* ide: refactor tf_read() methodSergei Shtylyov2009-04-08
| | | | | | | | | | | | | | Simplify tf_read() method, making it deal only with 'struct ide_taskfile' and the validity flags that the upper layer passes, and factoring out the code that deals with the high order bytes into ide_tf_readback() to be called from the only two functions interested, ide_complete_cmd() and ide_dump_sector(). This should stop the needless code duplication in this method and so make it about twice smaller than it was; along with simplifying the setup for the method call, this should save both time and space... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: refactor tf_load() methodSergei Shtylyov2009-04-08
| | | | | | | | | | | | | Simplify tf_load() method, making it deal only with 'struct ide_taskfile' and the validity flags that the upper layer passes, and moving the code that deals with the high order bytes into the only function interested, do_rw_taskfile(). This should stop the needless code duplication in this method and so make it about twice smaller than it was; along with simplifying the setup for the method call, this should save both time and space... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move common code out of tf_load() methodSergei Shtylyov2009-04-08
| | | | | | | | | Move device register masking (and setting drive->select) out of tf_load() method and into the only function that needs to use this code, do_rw_taskfile()... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> [bart: fix whitespace error] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: simplify 'struct ide_taskfile'Sergei Shtylyov2009-04-08
| | | | | | | | | | | | Make 'struct ide_taskfile' cover only 8 register values and thus put two such fields ('tf' and 'hob') into 'struct ide_cmd', dropping unnecessary 'tf_array' field from it. This required changing the prototype of ide_get_lba_addr() and ide_tf_dump(). Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> [bart: fix setting of ATA_LBA bit for LBA48 commands in __ide_do_rw_disk()] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: replace IDE_TFLAG_* flags by IDE_VALID_*Sergei Shtylyov2009-04-08
| | | | | | | | | | | Replace IDE_TFLAG_{IN|OUT}_* flags meaning to the taskfile register validity on input/output by the IDE_VALID_* flags and introduce 4 symmetric 8-bit register validity indicator subfields, 'valid.{input/output}.{tf|hob}', into the 'struct ide_cmd' instead of using the 'tf_flags' field for that purpose (this field can then be turned from 32-bit into 8-bit one). Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move data register access out of tf_{read|load}() methods (take 2)Sergei Shtylyov2009-03-31
| | | | | | | | | Move IDE_FTFLAG_{IN|OUT}_DATA flag handling out of tf_{read|load}() methods into the only two functions where these flags actually need to be handled: do_rw_taskfile() and ide_complete_cmd()... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: turn set_irq() method into write_devctl() methodSergei Shtylyov2009-03-31
| | | | | | | | Turn set_irq() method with its software reset hack into write_devctl() method (for just writing a value into the device control register) at last... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ide_dma_prepare() helperBartlomiej Zolnierkiewicz2009-03-31
| | | | | | | | | | | | | * Add ide_dma_prepare() helper. * Convert ide_issue_pc() and do_rw_taskfile() to use it. * Make ide_build_sglist() 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-cd: use scatterlists for PIO transfers (fs requests)Bartlomiej Zolnierkiewicz2009-03-31
| | | | | | | | | | | | | | | | | | | | | * Export ide_pio_bytes(). * Add ->last_xfer_len field to struct ide_cmd. * Add ide_cd_error_cmd() helper to ide-cd. * Convert ide-cd to use scatterlists also for PIO transfers (fs requests only for now) and get rid of partial completions (except when the error happens -- which is still subject to change later because looking at ATAPI spec it seems that the device is free to error the whole transfer with setting the Error bit only on the last transfer chunk). * Update ide_cd_{prepare_rw,restore_request,do_request}() accordingly. * Inline ide_cd_restore_request() into cdrom_start_rw(). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use PageHighMem() instead of ifdefs in ide_pio_bytes()Bartlomiej Zolnierkiewicz2009-03-31
| | | | | | | | Use PageHighMem() instead of ifdefs in ide_pio_bytes() (=> local IRQs won't be disabled when not necessary). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add support for arbitrary transfer lengths to ide_pio_bytes()Bartlomiej Zolnierkiewicz2009-03-31
| | | | | | | | | | Add support for arbitrary transfer lengths to ide_pio_bytes() and then inline ide_pio_multi() into ide_pio_datablock(). There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: keep track of number of bytes instead of sectors in struct ide_cmdBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | * Pass number of bytes instead of sectors to ide_init_sg_cmd(). * Pass number of bytes to process to ide_pio_sector() and rename it to ide_pio_bytes(). * Rename ->nsect field to ->nbytes in struct ide_cmd and use ->nbytes, ->nleft and ->cursg_ofs to keep track of number of bytes instead of sectors. There should be no functional changes caused by this patch. Acked-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_execute_pkt_cmd() (v2)Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | * Pass command structure to ide_execute_command() and skip __ide_set_handler() for ATAPI protocols on non-DRQ devices. * Convert ide_issue_pc() to always use ide_execute_command() and remove no longer needed ide_execute_pkt_cmd(). v2: * Fix for non-DRQ devices (based on report from Borislav). There should be no functional changes caused by this patch. Acked-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Rename dma_timer_expiry() to ide_dma_sff_timer_expiry() and export it. * Add ->dma_timer_expiry method and use it to set hwif->expiry for ATA_PROT_DMA protocol in do_rw_taskfile(). * Initialize ->dma_timer_expiry to ide_dma_sff_timer_expiry() for SFF hosts. * Move setting hwif->expiry from ide_execute_command() to its users and drop 'expiry' argument. * Use ide_execute_command() instead of ->dma_exec_cmd in do_rw_taskfile(). * Remove ->dma_exec_cmd method and its implementations. * Unexport ide_execute_command() and ide_dma_intr(). v2: * Fix CONFIG_BLK_DEV_IDEDMA=n build (noticed by Randy Dunlap). * Fix *dma_expiry naming (suggested by Sergei Shtylyov). There should be no functional changes caused by this patch. Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: set hwif->expiry prior to calling [__]ide_set_handler()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | * Set hwif->expiry prior to calling [__]ide_set_handler() and drop 'expiry' argument. * Set hwif->expiry to NULL in ide_{timer_expiry,intr}() and remove 'hwif->expiry = NULL' assignments. 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: use do_rw_taskfile() for ATA_CMD_PACKET commandsBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | * Pass command to ide_issue_pc() and update ->do_request methods in ide-{cd,floppy,tape}.c accordingly. * Convert ide_pktcmd_tf_load() to ide_init_packet_cmd() which just initializes command structure and use do_rw_taskfile() to load ATA_CMD_PACKET commands. While at it: * Rename ide{floppy,tape}_issue_pc() to ide_{floppy,tape}_issue_pc(). There should be no functional changes caused by this patch. Acked-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: pass command to ide_map_sg()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | * Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET commands. * Pass command to ->dma_setup method and update all its implementations accordingly. * Pass command instead of request to ide_build_sglist(), *_build_dmatable() and ide_map_sg(). While at it: * Fix scc_dma_setup() documentation + use ATA_DMA_WR define. * Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(), change return value type to 'int' and drop unused 'ddir' argument. * Do some minor cleanups in [tx4939]ide_dma_setup(). There should be no functional changes caused by this patch. Acked-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_end_request()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | * Add ide_rq_bytes() helper. * Add blk_noretry_request() quirk to ide_complete_rq() (currently only fs requests can be marked as "noretry" so there is no change in behavior). * Switch current ide_end_request() users to use ide_complete_rq(). [ No need to check for rq->nr_sectors == 0 in {ide_dma,task_pio}_intr(), nsectors == 0 in cdrom_end_request() and err == 0 in ide_do_devset(). ] * Remove no longer needed ide_end_request(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: pass number of bytes to complete to ide_complete_rq()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: pass error value to ide_complete_rq()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | Set rq->errors at ide_complete_rq() call sites and then pass error value to ide_complete_rq(). [ Some rq->errors assignments look really wrong but this patch leaves them alone to not introduce too many changes at once. ] There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: sanitize ide_finish_cmd()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | * Move ide_end_request() call out from ide_finish_cmd() to its users. * Use ide_finish_cmd() in task_no_data_intr(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use ide_complete_cmd() for REQ_UNPARK_HEADSBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | * Fixup ->tf_flags in ide_do_park_unpark() to match their current use. * Use ide_complete_cmd() for REQ_UNPARK_HEADS. While at it: * No need to read Error register for PM requests in task_no_data_intr(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use ide_complete_cmd() for head unload commandsBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | Move handling of head unload commands from task_no_data_intr() to ide_complete_cmd() and then use ide_complete_cmd() also for head unload commands. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: task_error() -> task_error_cmd()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | * Move ide_error() call from task_error() to task_pio_intr() (the only user). * Drop no longer used arguments from task_error(). * Rename task_error() to ide_error_cmd(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: unify exit paths in task_pio_intr()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: inline task_in_unexpected() into task_pio_intr()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | task_in_unexpected() is only used by task_pio_intr() so inline it there. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: merge task_{in,out}_intr()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | * Merge task_out_intr() with task_in_intr(). * Rename task_in_intr() to task_pio_intr(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use ata_tf_protocols enumsBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | * Add IDE_TFLAG_MULTI_PIO taskfile flag and set it for commands using multi-PIO protocol. * Use ata_tf_protocols enums instead of TASKFILE_* defines to denote command's protocol and then rename ->data_phase field to ->protocol. * Remove no longer needed <linux/hdreg.h> includes. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: set IDE_TFLAG_WRITE basing on data phase used in ide_taskfile_ioctl()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | Also take care of fixing up incorrect TASKFILE_IN_DMA[Q] data phase when IDE_DRIVE_TASK_RAW_WRITE is requested (no need to do it for TASKFILE_NO_DATA and TASKFILE_[MULTI]_IN -- it had no chance of working previously). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move command related fields from ide_hwif_t to struct ide_cmdBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | * Move command related fields from ide_hwif_t to struct ide_cmd. * Make ide_init_sg_cmd() take command and sectors number as arguments. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: pass command instead of request to ide_pio_datablock()Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | * Add IDE_TFLAG_FS taskfile flag and set it for REQ_TYPE_FS requests. * Convert ->{in,out}put_data methods to take command instead of request as an argument. Then convert pre_task_out_intr(), task_end_request(), task_error(), task_in_unexpected(), ide_pio_sector(), ide_pio_multi() and ide_pio_datablock() in similar way. * Rename task_end_request() to ide_finish_cmd(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_task_t typedefBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | While at it: - rename struct ide_task_s to struct ide_cmd - remove stale comments from idedisk_{read_native,set}_max_address() - drop unused 'cmd' argument from ide_{cmd,task}_ioctl() - drop unused 'task' argument from tx4939ide_tf_load_fixup() - rename ide_complete_task() to ide_complete_cmd() - use consistent naming for struct ide_cmd variables There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: call ide_build_sglist() prior to ->dma_setup (v2)Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | * Re-map sg table if needed in ide_build_sglist(). * Move ide_build_sglist() call from ->dma_setup to its users. * Un-export ide_build_sglist(). v2: * Build fix for CONFIG_BLK_DEV_IDEDMA=n (noticed by Randy Dunlap). There should be no functional changes caused by this patch. Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use blk_fs_request() check in ide-taskfile.cBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | Use blk_fs_request() in ide-taskfile.c instead of checking for: - rq->bio in ide_pio_datablock() and task_error() - rq->cmd_type == REQ_TYPE_ATA_TASKFILE in task_end_request() There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: use ->end_request only for private device driver requestsBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | * Move IDE{FLOPPY,TAPE}_ERROR_* defines to <linux/ide.h> and rename them to IDE_DRV_ERROR_*. * Handle ->end_request special cases for floppy/tape media in ide_kill_rq(). * Call ->end_request only for private device driver requests. There should be no functional changes caused by this patch. Acked-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ->data_phase field from ide_hwif_tBartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | * Always use hwif->task->data_phase and remove ->data_phase field from ide_hwif_t. * Remove superfluous REQ_TYPE_ATA_TASKFILE check from ide_pio_datablock() while at it. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: move request type specific code from ide_end_drive_cmd() to callers (v3)Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | | * Move request type specific code from ide_end_drive_cmd() to callers. * Remove stale ide_end_drive_cmd() documentation and drop no longer used 'stat' argument. Then rename the function to ide_complete_rq(). v2: * Fix handling of blk_pm_request() requests in task_no_data_intr(). v3: * Some ide_no_data_taskfile() users (HPA code and HDIO_DRIVE_* ioctls handlers) access original command later so we need to update it in ide_complete_task(). There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: add "flagged" taskfile flags to struct ide_taskfile (v2)Bartlomiej Zolnierkiewicz2009-03-27
| | | | | | | | | | | | | | | | | | | | * Add ->ftf_flags field to struct ide_taskfile and convert flags for TASKFILE ioctl to use it. * Rename "flagged" taskfile flags: - IDE_TFLAG_FLAGGED -> IDE_FTFLAG_FLAGGED - IDE_TFLAG_FLAGGED_SET_IN_FLAGS -> IDE_FTFLAG_SET_IN_FLAGS - IDE_TFLAG_{OUT,IN}_DATA -> IDE_FTFLAG_{OUT,IN}_DATA v2: * Remember to fully update ide-h8300.c, scc_pata.c and tx493{8,9}ide.c (thanks to Stephen Rothwell for noticing). There should be no functional changes caused by this patch. Cc: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: fix error message in pre_task_out_intr()Bartlomiej Zolnierkiewicz2009-03-27
| | | | Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove ide_driver_t typedefBartlomiej Zolnierkiewicz2009-01-06
| | | | | | | | While at it: - s/struct ide_driver_s/struct ide_driver/ - use to_ide_driver() macro in ide-proc.c Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: remove HWIF() macroBartlomiej Zolnierkiewicz2009-01-06
| | | | Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide: merge ide_hwgroup_t with ide_hwif_t (v2)Bartlomiej Zolnierkiewicz2009-01-06
| | | | | | | | | | | | | | | | | | | * Merge ide_hwgroup_t with ide_hwif_t. * Cleanup init_irq() accordingly, then remove no longer needed ide_remove_port_from_hwgroup() and ide_ports[]. * Remove now unused HWGROUP() macro. While at it: * ide_dump_ata_error() fixups v2: * Fix ->quirk_list check in do_ide_request() (s/hwif->cur_dev/prev_port->cur_dev). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* 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: merge all TASKFILE_NO_DATA data phase handlers into taskfile_no_intr()Bartlomiej Zolnierkiewicz2008-10-13
| | | | | | | | | * Add 'struct task_s' to ide_hwif_t and init it to the current command in do_rw_taskfile(). * Merge all TASKFILE_NO_DATA data phase handlers into taskfile_no_intr(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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