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Tejun Heo 5c4be57249 ide-cd,atapi: use bio for internal commands 
Impact: unify request data buffer handling

rq->data is used mostly to pass kernel buffer through request queue
without using bio.  There are only a couple of places which still do
this in kernel and converting to bio isn't difficult.

This patch converts ide-cd and atapi to use bio instead of rq->data
for request sense and internal pc commands.  With previous change to
unify sense request handling, this is relatively easily achieved by
adding blk_rq_map_kern() during sense_rq prep and PC issue.

If blk_rq_map_kern() fails for sense, the error is deferred till sense
issue and aborts the failed command which triggered the sense.  Note
that this is a slim possibility as sense prep is done on each command
issue, so for the above condition to actually trigger, all preps since
the last sense issue till the issue of the request which would require
a sense should fail.

* do_request functions might sleep now.  This should be okay as ide
  request_fn - do_ide_request() - is invoked only from make_request
  and plug work.  Make sure this is the case by adding might_sleep()
  to do_ide_request().

* Functions which access the read sense data before the sense request
  is complete now should access bio_data(sense_rq->bio) as the sense
  buffer might have been copied during blk_rq_map_kern().

* ide-tape updated to map sg.

* cdrom_do_block_pc() now doesn't have to deal with REQ_TYPE_ATA_PC
  special case.  Simplified.

* tp_ops->output/input_data path dropped from ide_pc_intr().

Signed-off-by: Tejun Heo <tj@kernel.org>
 		2009-04-19 07:00:42 +09:00
..
Kconfig ide: be able to build pmac driver without IDE built-in 2009-03-31 20:15:34 +02:00
Makefile ide: merge ide_arm and ide_generic host drivers 2009-03-31 20:15:24 +02:00
aec62xx.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
ali14xx.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
alim15x3.c ide: add ->dma_check method 2009-03-31 20:15:21 +02:00
amd74xx.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
at91_ide.c at91_ide: turn on PIO 6 support 2009-04-08 14:13:04 +02:00
atiixp.c ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS 2009-03-24 23:22:52 +01:00
au1xxx-ide.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
buddha.c ide: allow host drivers to specify IRQ flags 2009-03-27 12:46:27 +01:00
cmd64x.c ide: set/clear drive->waiting_for_dma flag in the core code 2009-03-31 20:15:22 +02:00
cmd640.c cmd640: use ide_get_pair_dev() helper 2009-01-06 17:20:55 +01:00
cs5520.c dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
cs5530.c ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3) 2009-03-31 20:15:27 +02:00
cs5535.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
cs5536.c cs5536: define dma_sff_read_status() method 2009-04-18 17:42:20 +02:00
cy82c693.c ide: remove HWIF() macro 2009-01-06 17:20:52 +01:00
delkin_cb.c ide: allow host drivers to specify IRQ flags 2009-03-27 12:46:27 +01:00
dtc2278.c ide: add IDE_HFLAG_DTC2278 host flag 2009-03-27 12:46:28 +01:00
falconide.c ide: falconide/q40ide - Use __ide_mm_{in,out}sw() for data 2009-04-08 14:12:48 +02:00
gayle.c ide: remove CONFIG_BLK_DEV_IDEDOUBLER config option 2009-03-31 20:15:26 +02:00
hpt366.c hpt366: use ATA_DMA_* constants 2009-04-18 17:42:19 +02:00
ht6560b.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
icside.c ide: set/clear drive->waiting_for_dma flag in the core code 2009-03-31 20:15:22 +02:00
ide-4drives.c ide: add IDE_HFLAG_4DRIVES host flag 2009-03-27 12:46:28 +01:00
ide-acpi.c ide: simplify 'struct ide_taskfile' 2009-04-08 14:13:02 +02:00
ide-atapi.c ide-cd,atapi: use bio for internal commands 2009-04-19 07:00:42 +09:00
ide-cd.c ide-cd,atapi: use bio for internal commands 2009-04-19 07:00:42 +09:00
ide-cd.h ide-cd: convert to using generic sense request 2009-04-19 07:00:42 +09:00
ide-cd_ioctl.c ide: remove IDE_AFLAG_NO_DOORLOCKING 2008-10-17 18:09:11 +02:00
ide-cd_verbose.c block: replace sizeof(rq->cmd) with BLK_MAX_CDB 2008-04-29 14:48:55 +02:00
ide-cs.c ide: allow host drivers to specify IRQ flags 2009-03-27 12:46:27 +01:00
ide-devsets.c ide: remove ide_end_request() 2009-03-27 12:46:45 +01:00
ide-disk.c ide: don't set REQ_SOFTBARRIER 2009-04-19 07:00:41 +09:00
ide-disk.h [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-disk_ioctl.c [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-disk_proc.c ide: replace IDE_TFLAG_* flags by IDE_VALID_* 2009-04-08 14:13:01 +02:00
ide-dma-sff.c ide: remove wmb() from ide-dma-sff.c and scc_pata.c 2009-04-08 14:12:49 +02:00
ide-dma.c ide: add support for CFA specified transfer modes (take 3) 2009-03-31 20:15:28 +02:00
ide-eh.c ide: inline SELECT_DRIVE() 2009-03-31 20:15:33 +02:00
ide-floppy.c ide-atapi: convert ide-{floppy,tape} to using preallocated sense buffer 2009-04-19 07:00:42 +09:00
ide-floppy.h [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-floppy_ioctl.c ide: decrease size of ->pc_buf field in struct ide_atapi_pc 2009-03-31 20:15:25 +02:00
ide-floppy_proc.c ide: NULL noise: drivers/ide/ide-*.c 2009-03-05 16:10:56 +01:00
ide-gd.c ide: remove ->end_request method 2009-03-27 12:46:36 +01:00
ide-gd.h ide: move ->failed_pc to ide_drive_t 2009-03-27 12:46:34 +01:00
ide-generic.c ide: merge ide_arm and ide_generic host drivers 2009-03-31 20:15:24 +02:00
ide-h8300.c ide-h8300: remove custom tf_{read|load}() methods 2009-04-08 14:12:51 +02:00
ide-io-std.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
ide-io.c ide-cd,atapi: use bio for internal commands 2009-04-19 07:00:42 +09:00
ide-ioctls.c ide: don't set REQ_SOFTBARRIER 2009-04-19 07:00:41 +09:00
ide-iops.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
ide-legacy.c ide: move legacy ISA/VLB ports handling to ide-legacy.c (v2) 2008-12-29 20:27:37 +01:00
ide-lib.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
ide-park.c ide: use blk_run_queue() instead of blk_start_queueing() 2009-04-19 07:00:41 +09:00
ide-pci-generic.c ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS 2009-03-24 23:22:52 +01:00
ide-pio-blacklist.c ide: move PIO blacklist to ide-pio-blacklist.c 2008-07-16 20:33:39 +02:00
ide-pm.c ide: replace IDE_TFLAG_* flags by IDE_VALID_* 2009-04-08 14:13:01 +02:00
ide-pnp.c ide-pnp: use struct ide_port_info 2009-03-27 12:46:18 +01:00
ide-probe.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
ide-proc.c ide: replace IDE_TFLAG_* flags by IDE_VALID_* 2009-04-08 14:13:01 +02:00
ide-scan-pci.c ide: replace remaining __FUNCTION__ occurrences 2008-04-26 22:25:20 +02:00
ide-sysfs.c ide: move sysfs support to ide-sysfs.c 2009-01-02 16:12:48 +01:00
ide-tape.c ide-cd,atapi: use bio for internal commands 2009-04-19 07:00:42 +09:00
ide-taskfile.c ide-taskfile: don't abuse rq->buffer 2009-04-19 07:00:42 +09:00
ide-timings.c ide: add support for CFA specified transfer modes (take 3) 2009-03-31 20:15:28 +02:00
ide-xfer-mode.c ide: add support for CFA specified transfer modes (take 3) 2009-03-31 20:15:28 +02:00
ide.c ide: move device settings code to ide-devsets.c 2009-03-24 23:22:44 +01:00
ide_platform.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
it821x.c ide: add ->dma_clear method and remove ->dma_timeout one 2009-03-31 20:15:19 +02:00
it8172.c Resurrect IT8172 IDE controller driver 2009-01-06 17:21:01 +01:00
it8213.c ide: remove HWIF() macro 2009-01-06 17:20:52 +01:00
jmicron.c ide: Switch to a common address 2008-11-02 21:40:08 +01:00
macide.c ide: allow host drivers to specify IRQ flags 2009-03-27 12:46:27 +01:00
ns87415.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
opti621.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
palm_bk3710.c IDE: palm_bk3710: use ioremap instead of arch-specific IO_ADDRESS() 2009-03-27 12:46:23 +01:00
pdc202xx_new.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
pdc202xx_old.c ide: add ->dma_clear method and remove ->dma_timeout one 2009-03-31 20:15:19 +02:00
piix.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
pmac.c ide: Remove void casts 2009-04-18 17:42:19 +02:00
q40ide.c ide: falconide/q40ide - Use __ide_mm_{in,out}sw() for data 2009-04-08 14:12:48 +02:00
qd65xx.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
qd65xx.h Fix my email address in qd65xx.[ch]/pata_qdi.c 2009-02-03 16:53:56 -08:00
rapide.c arm ide breakage 2008-10-26 09:35:05 -07:00
rz1000.c rz1000: apply chipset quirks early (v2) 2008-12-29 20:27:33 +01:00
sc1200.c ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3) 2009-03-31 20:15:27 +02:00
scc_pata.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
serverworks.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
setup-pci.c dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
sgiioc4.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
siimage.c ide: add ->dma_clear method and remove ->dma_timeout one 2009-03-31 20:15:19 +02:00
sis5513.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
sl82c105.c ide: add support for CFA specified transfer modes (take 3) 2009-03-31 20:15:28 +02:00
slc90e66.c ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS 2009-03-24 23:22:52 +01:00
tc86c001.c ide: add ->dma_clear method and remove ->dma_timeout one 2009-03-31 20:15:19 +02:00
triflex.c ide: remove HWIF() macro 2009-01-06 17:20:52 +01:00
trm290.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
tx4938ide.c tx493[89]ide: Remove big endian version of tx493[89]ide_tf_{load,read} 2009-04-08 14:12:52 +02:00
tx4939ide.c ide: refactor tf_load() method 2009-04-08 14:13:03 +02:00
umc8672.c ide: merge ide_hwgroup_t with ide_hwif_t (v2) 2009-01-06 17:20:50 +01:00
via82cxxx.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00