* hpt34x.c: disable DMA masks for HPT345
(hwif->autodma is zero so DMA won't be enabled anyway).
* trm290.c: disable IDE_HFLAG_TRUST_BIOS_FOR_DMA flag
(hwif->autodma is zero so DMA won't be enabled anyway).
* Check noautodma global variable instead of drive->autodma in ide_tune_dma().
This fixes handling of "ide=nodma" kernel parameter for icside, ide-cris,
au1xxx-ide, pmac, it821x, jmicron, sgiioc4 and siimage host drivers.
* Remove hwif->autodma (it was not checked by IDE core code anyway) and
drive->autodma (was set by all host drivers - except HPT345/TRM290 special
cases - unless "ide=nodma" was used).
While at it:
- remove needless printk() from icside.c
- remove stale FIXME/comment from ide-probe.c
- don't force DMA off if PCI bus-mastering had to be enabled in setup-pci.c
(this setting was always later over-ridden by host drivers anyway)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add IDE_HFLAG_TRUST_BIOS_FOR_DMA host flag for host drivers that depend
on BIOS for programming device/controller for DMA. Set it in cy82c693,
generic, ns87415, opti621 and trm290 host drivers.
* Add IDE_HFLAG_VDMA host flag for host drivers using VDMA. Set it in cs5520
host driver.
* Teach ide_tune_dma() about IDE_HFLAG_TRUST_BIOS_FOR_DMA flag.
* Add generic ide_dma_check() helper and remove all open coded ->ide_dma_check
implementations. Fix all places checking for presence of ->ide_dma_check
hook to check for ->ide_dma_on instead.
* Remove no longer needed code from config_drive_for_dma().
* Make ide_tune_dma() static.
v2:
* Fix config_drive_for_dma() return values.
* Fix ide-dma.c build for CONFIG_BLK_DEV_IDEDMA_PCI=n by adding
dummy config_drive_for_dma() inline.
* Fix IDE_HFLAG_TRUST_BIOS_FOR_DMA handling in ide_dma_check().
* Fix init_hwif_it8213() comment.
There should be no functionality changes caused by this patch.
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove ide_use_fast_pio() and just re-tune PIO unconditionally if DMA tuning
has failed in ->ide_dma_check. All host drivers using ide_use_fast_pio() set
drive->autotune so PIO is always tuned anyway and in some cases we _really_
need to re-tune PIO because PIO and DMA timings are shared.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16.
* Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program
the host for the transfer mode after programming the device. Set it
in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac
and via82cxxx host drivers.
* Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely
skip programming of host/device for the transfer mode ("smart" hosts).
Set it in it821x host driver and check it in ide_tune_dma().
* Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all
direct ->set_pio_mode/->speedproc users to use these helpers.
* Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc
methods to callers.
* Rename ->speedproc method to ->set_dma_mode, make it void and update
all implementations accordingly.
* Update ide_set_xfer_rate() comments.
* Unexport ide_config_drive_speed().
v2:
* Fix issues noticed by Sergei:
- export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt
to setting DMA modes from sc1200_set_pio_mode() to do_special()
- check IDE_HFLAG_NO_SET_MODE in ide_tune_dma()
- check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode()
- check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode()
- return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL
- don't set ->set_{pio,dma}_mode on it821x in "smart" mode
- fix build problem in pmac.c
- minor fixes in au1xxx-ide.c/cs5530.c/siimage.c
- improve patch description
Changes in behavior caused by this patch:
- HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change
PIO mode if it821x controller is in "smart" mode
- removal of two debugging printk-s (from cs5530.c and sc1200.c)
- transfer modes 0x00-0x07 passed from user space may be programmed twice on
the device (not really an issue since 0x00 is not supported correctly by
any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid)
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add "good DMA drives" hack for icside to ide-dma.c::ide_find_dma_mode()
(in the long-term it should be either removed or generalized for all hosts).
* Use ide_tune_dma() in icside.c::icside_dma_check().
This results in the following changes in behavior:
- pre-EIDE SWDMA modes are now also respected
- drive->autodma is checked instead of hwif->autodma
(doesn't really matter as icside sets both to "1")
* Make ide-dma.c::__ide_dma_good_drive() static and drop "__" prefix.
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Use ide_config_drive_speed() instead of pmac_ide_do_setfeature() and remove
the latter, also ide-iops.c::__ide_wait_stat() could be static again.
Since for IDE PMAC host driver IDE_CONTROL_REG is always true, device's
->quirk_list is always zero and ->ide_dma_host_{on,off} are nops than
the only changes in behavior are:
* if PIO mode is set then ->dma_off_queitly is called to disable DMA
* if setting transfer mode fails ide_dump_status() is called to dump status
v2:
* IDE PMAC controllers allow separate PIO and DMA timings and PPC userland
depends on this fact, and calls "hdparm -p" without calling "hdparm -d".
Therefore to compensate for DMA being disabled by ide_config_drive_speed()
for PIO modes:
- add IDE_HFLAG_SET_PIO_MODE_KEEP_DMA flag and set it in PMAC host driver
- add handling of the new flag to ide-io.c::do_special()
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Use __ide_wait_stat() instead of wait_for_ready() in pmac_ide_do_setfeature().
While at it do following changes to match __ide_wait_stat() call in
ide_config_drive_speed():
* Wait WAIT_CMD time (20 sec) instead of 2 sec for device to clear BUSY_STAT.
* Check DRQ_STAT bit (shouldn't be set for good device status).
Also remove no longer needed wait_for_ready() from ide-iops.c.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Split off checking of the status register from ide_wait_stat() to
__ide_wait_stat() helper.
* Use the new helper in ide_config_drive_speed(). The only change in the
functionality is that the function now fails if after 20 sec (WAIT_CMD)
device is still busy (BUSY_STAT bit is set) while previously instead of
failing the function continued with checking for the correct device status
(which would give the device additional 10 usec to clear BUSY_STAT bit).
* Remove stale comment for ide_config_drive_speed().
* Remove duplicate comment for ide_wait_stat() from <linux/ide.h>.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add IDE_HFLAG_ABUSE_{PREFETCH,FAST_DEVSEL,DMA_MODES} flags
and set them in ht6560, cmd640, cmd64x and sc1200 host drivers.
* Add set_pio_mode_abuse() for checking if host driver has a non-standard
->tuneproc() implementation and use it in do_special().
* Add ide_set_pio() for setting PIO mode (it uses hwif->pio_mask to find
the maximum PIO mode supported by the host), also add ide_set_max_pio()
wrapper for ide_set_pio() to use for auto-tuning. Convert users of
->tuneproc to use ide_set{_max}_pio() where possible. This leaves only
do_special(), set_using_pio(), ide_hwif_restore() and ide_set_pio() as
a direct users of ->tuneproc.
* Remove no longer needed ide_get_best_pio_mode() calls and printk-s
reporting PIO mode selected from ->tuneproc implementations.
* Rename ->tuneproc hook to ->set_pio_mode and make 'pio' argument const.
* Remove stale comment from ide_config_drive_speed().
v2:
* Fix "ata_" prefix (Noticed by Jeff).
v3:
* Minor cleanups/fixups per Sergei's suggestions.
v4:
* Fix compile problem in drivers/ide/pci/cmd640.c
(Noticed by Andrew Morton).
* Improve some ->set_pio_mode comments.
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Move ide_rate_filter() calls from host drivers to IDE core.
* Make ide_rate_filter() static.
* Make 'speed' argument of ->speedproc const.
v2:
* Fix it8213_tune_chipset() comment.
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add an extra argument to ide_max_dma_mode() for passing requested transfer
mode. Use it as an upper limit when finding the best DMA for device/host.
* Rename ide_max_dma_mode() to ide_find_dma_mode() and at the same time add
ide_max_dma_mode() wrapper which passes XFER_UDMA_6 as a requested mode to
ide_find_dma_mode(). Also add inline ide_find_dma_mode() version for
CONFIG_BLK_DEV_IDEDMA=n case.
* Pass requested transfer mode from ide_find_dma_mode() to ide_get_mode_mask()
to avoid false warning from eighty_ninty_three().
* Use ide_find_dma_mode() to limit the user requested transfer mode in
ide_rate_filter(). Also limit the requested mode by host max PIO mode.
Above changes make ide_rate_filter() to:
* Clip desired transfer mode down if it is invalid (values 0x0F, 0x13-0x19
and 0x25-0x39, values > 0x46 were already clipped down, same for values
0x25-0x39 but iff UDMA was not supported by the host).
* Clip desired transfer mode down if it is currently unsupported by IDE core
(PIO6 and MWDMA3-4, the latter were already clipped down but iff UDMA was
not supported by the host).
* Clip desired transfer mode down according to the host capabilities
(UDMA modes were already clipped down but MWDMA/SWDMA/PIO weren't,
also ->atapi_dma flag was not respected).
* Clip desired transfer mode down according to the device capabilities
(except PIO modes for now which require mode work) - shouldn't be a
problem since ide_set_xfer_rate() is called _after_ device has accepted
given transfer mode.
and also result in a number of host driver specific bugfixes:
* icside
- clip unsupported PIO5 mode down
- fix unsupported/invalid modes being set in drive->current_speed
* ide-cris
- clip unsupported PIO5 and SWDMA0-2 modes down
- clip DMA modes down for ATAPI devices
- fix BUG() on unsupported/invalid modes
* au1xxx-ide
- clip unsupported PIO5, SWDMA0-2 and MWDMA0-2
(if BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=n) modes down
* aec62xx
- clip unsupported PIO5 and SWDMA0-2 modes down
- clip DMA modes down for ATAPI devices
- fix 0x00 being programmed as PIO timing for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* alim15x3
- clip DMA modes down for ATAPI devices (chipset revision == 0x20 only)
- fix theoretical OOPS for 0x0F mode
- fix unsupported/invalid modes being set on the device
* amd74xx
- clip unsupported SWDMA0-2 (on COBRA_7401 revs <= 7) modes down
- fix random PIO timings being set for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* atiixp
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix cached MWDMA mode being cleared for unsupported/invalid modes
- fix PIO{0,2} timings being programmed for unsupported/invalid modes
- fix theoretical OOPS for PIO5-6 and 0x0F modes
- fix unsupported/invalid modes being set on the device
* cmd64x
- clip unsupported SWDMA0-2 modes down
* cs5530
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix unsupported/invalid modes being set on the device
- fix BUG() on unsupported/invalid modes
(which happened if the device accepted the setting)
* cs5535
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix unsupported/invalid modes being set on the device
- fix theoretical OOPS for PIO5-6 and 0x0F modes
* hpt34x
- clip DMA modes down for ATAPI devices
- fix invalid timings being programmed for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* hpt366
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix PIO0 timings being programmed for unsupported/invalid modes
- fix DMA timings being cleared for MWDMA3-4 and 0x25-0x39 modes
- fix unsupported/invalid modes being set on the device
* it8213
- clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down
* it821x
- clip unsupported PIO5 and SWDMA0-2 modes down
- clip DMA modes down for ATAPI devices
(chipset in smart mode and revision 0x10 in pass-through mode)
* jmicron
- clip unsupported SWDMA0-2 modes down
- fix unsupported/invalid modes being set on the device
* pdc202xx_new
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix unsupported/invalid modes being set on the device
* pdc202xx_old
- clip unsupported PIO5 mode down
- fix incorrect timings being set for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* piix
- clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down
* sc1200
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix unsupported/invalid modes being set on the device
- fix BUG() on unsupported/invalid modes
(which happened if the device accepted the setting)
* scc_pata
- clip unsupported PIO5, SWDMA0-2 and MWDMA0-2 modes down
* serverworks
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix DMA/UDMA timings/settings being cleared for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* siimage
- clip unsupported PIO5 and SWDMA0-2 modes down
- clip DMA modes down for ATAPI devices (SATA chipsets)
* sis5513
- clip unsupported PIO5 mode down
- fix BUG() on unsupported/invalid modes
* sl82c105
- clip unsupported SWDMA0-2 modes down
* slc90e66
- clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down
* tc86c001
- clip unsupported PIO5 and SWDMA0-2 modes down
- fix PIO0 timings being programmed for PIO5/0x0F/SWDMA0-2/0x13-0x19 modes
- fix invalid 0x00 DMA timing being programmed for MWDMA3-4/0x25-0x39 modes
- fix unsupported/invalid modes being set on the device
* triflex
- clip unsupported PIO5 mode down
* via82cxxx
- fix random PIO timings being set for unsupported/invalid modes
- fix unsupported/invalid modes being set on the device
* pmac
- clip unsupported PIO5 and SWDMA0-2 modes down
* cmd640/ht6560b
- clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y)
- fix PIO5 being clipped to PIO4 (if CONFIG_BLK_DEV_IDEDMA=n)
* opti621
- clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y)
- clip unsupported PIO4 to PIO3 (if CONFIG_BLK_DEV_IDEDMA=n)
While at it:
* Use ide_rate_filter() in cs5520.c::cs5520_tune_chipset().
* Remove no longer needed checks from hpt366.c::hpt3{6,7}x_tune_chipset().
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
ACPI spec defines the sequence of IDE power on/off:
Powering down:
Call _GTM.
Power down drive (calls _PS3 method and turns off power planes).
Powering up:
Power up drive (calls _PS0 method if present and turns on power planes).
Call _STM passing info from _GTM (possibly modified), with ID data from
each drive.
Initialize the channel.
May modify the results of _GTF.
For each drive:
Call _GTF.
Execute task file (possibly modified).
This patch adds the missed _PS0/_PS3 methods call.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The Marvell bridge chips used on HighPoint SATA cards do not seem to support
the MWDMA modes (at least that could be seen in their so-called drivers :-),
so the driver needs to account for this -- to achieve this:
- add mdma_filter() method from the original patch by Bartlomiej Zolnierkiewicz
with his consent;
- install the method for all chips to only return empty mask if a SATA drive
is detected on HPT372{AN]/374 chips...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Make the SATA drive detection code from eighty_ninty_three() into inline
ide_dev_is_sata() helper fixing it along the way to be more strict while
checking word 80 for the reserved values...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Move ide_in_drive_list() from ide-dma.c to ide-iops.c.
* Add ivb_list[] table for listening early UDMA66 devices which don't conform
to ATA4 standard wrt cable detection (bit14 is zero, only bit13 is valid)
and use only device side cable detection for them since host side cable
detection may be unreliable.
* Add model "QUANTUM FIREBALLlct10 05" with firwmare "A03.0900" to the list
(from Craig's bugreport).
v2:
* Improve kernel message basing on suggestion from Sergei.
v3:
* Don't print kernel message when no device side cable detection is done,
plus some minor fixes. (Noticed by Sergei)
Thanks to Craig for testing this patch.
Cc: Craig Block <chblock3@yahoo.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add DMA blacklist checking (->ide_dma_on check probably can go now).
* Add ->atapi_dma flag checking and remove no longer needed
ns87415_ide_dma_check() from ns87415 host driver.
* Remove now needless __ide_dma_check() wrapper and symbol export.
* Check drive->autodma instead of hwif->autodma (there should be no changes in
behavior as all users of config_drive_for_dma() set both ->autodma flags).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Add ATA_PIO[0-6] defines to <linux/ata.h>.
* Add ->pio_mask field to ide_pci_device_t and ide_hwif_t.
* Add PIO masks to host drivers.
<linux/ata.h> change ACK-ed by Jeff Garzik <jeff@garzik.org>.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add ->host_flags to ide_hwif_t to store ide_pci_device_t.host_flags,
assign it in setup-pci.c:ide_pci_setup_ports().
* Add IDE_HFLAG_PIO_NO_{BLACKLIST,DOWNGRADE} to ide_pci_device_t.host_flags
and teach ide_get_best_pio_mode() about them. Also remove needless
!drive->id check while at it (drive->id is always present).
* Convert amd74xx, via82cxxx and ide-timing.h to use ide_get_best_pio_mode()
and then remove no longer needed ide_find_best_pio_mode().
There should be no functionality changes caused by this patch.
Acked-by: Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Drop no longer needed "PIO data" argument from ide_get_best_pio_mode()
and convert all users accordingly.
* Remove no longer needed ide_pio_data_t.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add ide_pio_cycle_time() helper.
* Use it in ali14xx/ht6560b/qd65xx/cmd64{0,x}/sl82c105 and pmac host drivers
(previously cycle time given by the device was only used for "pio" == 255).
* Remove no longer needed ide_pio_data_t.cycle_time field.
v2:
* Fix "ata_" prefix (Noticed by Jeff).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Rename ide_pci_device_t.flags to ide_pci_device_t.host_flags
and IDEPCI_FLAG_ISA_PORTS flag to IDE_HFLAG_ISA_PORTS.
* Add IDE_HFLAG_SINGLE flag for single channel devices.
* Convert core code and all IDE PCI drivers to use IDE_HFLAG_SINGLE
and remove no longer needed ide_pci_device_t.channels field.
v2:
* Fix issues noticed by Sergei:
- correct code alignment in scc_pata.c
- s/IDE_HFLAG_SINGLE/~IDE_HFLAG_SINGLE/ in serverworks.c
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Print info about overriding PIO mode in ide_get_best_pio_mode().
* Remove info about overriding PIO mode from cmd64{0,x} host drivers.
* Remove no longer needed ide_pio_data_t.overridden field.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This patch allows users to override both host and device side cable detection
with "ideX=ata66" kernel parameter. Thanks to this it should be now possible
to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable
instead of 80-pin one.
Next patches add automatic detection of some systems using short cables.
Changes:
* Rename hwif->udma_four to hwif->cbl and make it u8.
* Convert all existing users accordingly (use ATA_CBL_* defines while at it).
* Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three().
* Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
--
The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Since ide_dma_timeout() method's result is discarded, make it return 'void'.
While at it, drop 'ide_' from the method's name, drop the '__' prefix from
the default method's name, and do some cleanups in this method driver-wise:
- in ide-dma.c, au1xxx-ide.c, and pdc202xx_old.c, define/use 'hwif' variable;
- in au1xxx-ide.c, get rid of commented out printk();
- in sl82c105.c, get rid of unnecessary variables.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Since ide_dma_lostirq() method's result is discarded, make it return 'void'.
While at it, rename the method to dma_lost_irq(), drop the '__' prefix from the
default method's name, and do some cleanups in this method driver-wise:
- in aec62xx.c, rename the method in accordance with other drivers, and get rid
of unnecessary variables there;
- in pdc202xx_old.c, define/use 'hwif' variable;
- in sgiioc4.c, rearrange the code to call the resetproc() method directly.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Currently when system which have HPA require HPA to be detected and
disabled upon resume from RAM or disk. The current IDE drivers do not do
this nor does libata (obviously it since it doesn't support HPA yet).
I have implemented this into the current IDE drivers and it has been
tested by many others since 7/15/2006 in bug number 6840:
http://bugzilla.kernel.org/show_bug.cgi?id=6840
and it has been confirmed to work fine with no problems.
bart: added drv != NULL check to generic_ide_suspend()
From: Lee Trager <lt73@cs.drexel.edu>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
ide_use_dma() duplicates a lot of ide_max_dma_mode() functionality
and as all users of ide_use_dma() were converted to use ide_tune_dma()
now it is possible to add missing checks to ide_tune_dma() and remove
ide_use_dma() completely, so do it.
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* check ->speedproc return value in ide_tune_dma()
* use ide_tune_dma() in cmd64x/cs5530/sc1200/siimage/sl82c105/scc_pata drivers
* remove no longer needed ide_dma_enable()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
IDE PCI host drivers should register themselves with IDE core only when
IDE driver is built-in, otherwise (IDE driver is modular and thus IDE PCI
host drivers are also modular) the code has no effect and just complicates
the probing.
Fix it by adding new config option CONFIG_IDEPCI_PCIBUS (defined only when
needed and invisible to the user) and covering by #ifdef/#endif the code
in question. It turned out that "ide=reverse" was silently accepted but did
nothing in case when IDE driver was modular, this is fixed now.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* create_proc_ide_interfaces() tries to add /proc entries for every probed
and initialized IDE port, replace it by ide_proc_register_port() which does
it only for the given port (also rename destroy_proc_ide_interface() to
ide_proc_unregister_port() for consistency)
* convert {create,destroy}_proc_ide_interface[s]() users to use new functions
* pmac driver depended on proc_ide_create() to add /proc port entries, fix it
* au1xxx-ide, swarm and cs5520 drivers depended indirectly on ide-generic
driver (CONFIG_IDE_GENERIC=y) to add port /proc entries, fix them
* there is now no need to add /proc entries for IDE ports in proc_ide_create()
so don't do it
* proc_ide_create() needs now to be called before drivers are probed - fix it,
while at it make proc_ide_create() create /proc "ide" directory
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add "initializing" argument to ide_register_hw() and use it instead of ide.c
wide variable of the same name. Update all users of ide_register_hw()
accordingly.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Tejun's recent eighty_ninty_three() fix has inspired me to do more thorough
review of the cable detection code...
* print user-friendly warning about limiting the maximum transfer speed
to UDMA33 (and the reason behind it) when 80-wire cable is not detected,
also while at it cleanup eighty_ninty_three() a bit
* use eighty_ninty_three() in ide_ata66_check(), this actually fixes 3 bugs:
- bit 14 (word 93 validity check) == 1 && bit 13 (80-wire cable test) == 1
were used as 80-wire cable present test for CONFIG_IDEDMA_IVB=n case
(please see FIXME comment in eighty_ninty_three() for more details)
- CONFIG_IDEDMA_IVB=y/n cases were interchanged
- check for SATA devices was missing
* remove private cable warnings from pdc_202xx{old,new} drivers now that core
code provides this functionality (plus, in pdc202xx_new case the test could
give false warnings for ATAPI devices because pdc202xx_new driver doesn't
even support ATAPI DMA)
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* move
__ide_add_setting()
ide_add_setting()
__ide_remove_setting()
auto_remove_settings()
ide_find_setting_by_name()
ide_read_setting()
ide_write_setting()
set_xfer_rate()
ide_add_generic_settings()
ide_register_subdriver()
ide_unregister_subdriver()
from ide.c to ide-proc.c
* set_{io_32bit,pio_mode,using_dma}() cannot be marked static now, fix it
* rename ide_[un]register_subdriver() to ide_proc_[un]register_driver(),
update device drivers to use new names
* add CONFIG_IDE_PROC_FS=n versions of ide_proc_[un]register_driver()
and ide_add_generic_settings()
* make ide_find_setting_by_name(), ide_{read,write}_setting()
and ide_{add,remove}_proc_entries() static
* cover IDE settings code in device drivers with CONFIG_IDE_PROC_FS #ifdef,
also while at it cover with CONFIG_IDE_PROC_FS #ifdef ide_driver_t.proc
* remove bogus comment from ide.h
* cover with CONFIG_IDE_PROC_FS #ifdef .proc and .settings in ide_drive_t
Besides saner code this patch results in the IDE core smaller by ~2 kB
(on x86-32) and IDE disk driver by ~1 kB (ditto) when CONFIG_IDE_PROC_FS=n.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* do write permission and min/max checks in ide_procset_t functions
* ide-disk.c: drive->id is always available so cleanup "multcount" setting
accordingly
* ide-disk.c: "address" setting was incorrectly defined as type TYPE_INTA,
fix it by using type TYPE_BYTE and updating ide_drive_t->adressing field,
the bug didn't trigger because this IDE setting uses custom ->set function
* ide.c: add set_ksettings() for handling HDIO_SET_KEEPSETTINGS ioctl
* ide.c: add set_unmaskirq() for handling HDIO_SET_UNMASKINTR ioctl
* handle ioctls directly in generic_ide_ioclt() and idedisk_ioctl()
instead of using IDE settings to deal with them
* remove no longer needed ide_find_setting_by_ioctl() and {read,write}_ioctl
fields from ide_settings_t, also remove now unused TYPE_INTA handling
v2:
* add missing EXPORT_SYMBOL_GPL(ide_setting_sem) needed now for ide-disk
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
All important information/features should be already available through
sysfs and ioctl interfaces.
Add CONFIG_IDE_PROC_FS (CONFIG_SCSI_PROC_FS rip-off) config option,
disabling it makes IDE driver ~5 kB smaller (on x86-32).
While at it add CONFIG_PROC_FS=n versions of proc_ide_{create,destroy}()
and remove no longer needed #ifdefs.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
After reworking the code responsible for selecting the best DMA
transfer mode it is now possible to add generic ide_tune_dma() helper.
Convert some IDE PCI host drivers to use it (the ones left need more work).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Depends on the "ide: fix UDMA/MWDMA/SWDMA masks" patch.
* add ide_hwif_t.udma_filter hook for filtering UDMA mask
(use it in alim15x3, hpt366, siimage and serverworks drivers)
* add ide_max_dma_mode() for finding best DMA mode for the device
(loosely based on some older libata-core.c code)
* convert ide_dma_speed() users to use ide_max_dma_mode()
* make ide_rate_filter() take "ide_drive_t *drive" as an argument instead
of "u8 mode" and teach it to how to use UDMA mask to do filtering
* use ide_rate_filter() in hpt366 driver
* remove no longer needed ide_dma_speed() and *_ratemask()
* unexport eighty_ninty_three()
v2:
* rename ->filter_udma_mask to ->udma_filter
[ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
v3:
* updated for scc_pata driver (fixes XFER_UDMA_6 filtering for user-space
originated transfer mode change requests when 100MHz clock is used)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* use 0x00 instead of 0x80 to disable ->{ultra,mwdma,swdma}_mask
* add udma_mask field to ide_pci_device_t and use it to initialize
->ultra_mask in aec62xx, cmd64x, pdc202xx_{new,old} and piix drivers
* fix UDMA masks to match with chipset specific *_ratemask()
(alim15x3, hpt366, serverworks and siimage drivers need UDMA mask
filtering method - done in the next patch)
v2:
* piix: fix cable detection for 82801AA_1 and 82372FB_1
[ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
* cmd64x: use hwif->cds->udma_mask
[ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
* aec62xx: fix newly introduced bug - check DMA status not command register
[ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
v3:
* piix: use hwif->cds->udma_mask
[ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Get rid of the 'pio_speed' member of 'ide_drive_t' that was only used by this
driver by storing the PIO mode timings in the 'drive_data' instead -- this
allows us to greatly simplify the process of "reloading" of the chip's timing
register and do it right in sl82c150_dma_off_quietly() and to get rid of two
extra arguments to config_for_pio() -- which got renamed to sl82c105_tune_pio()
and now returns a PIO mode selected, with ide_config_drive_speed() call moved
into the tuneproc() method, now called sl82c105_tune_drive() with the code to
set drive's 'io_32bit' and 'unmask' flags in its turn moved to its proper place
in the init_hwif() method.
Also, while at it, rename get_timing_sl82c105() into get_pio_timings() and get
rid of the code in it clamping cycle counts to 32 which was both incorrect and
never executed anyway...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
It is possible for the timer expiry function to run even though the
request has already been handled: ide_timer_expiry() only checks that
the handler is not NULL, but it is possible that we have handled a
request (thus clearing the handler) and then started a new request
(thus starting the timer again, and setting a handler).
A simple way to exhibit this is to set the DMA timeout to 1 jiffy and
run dd: The kernel will panic after a few minutes because
ide_timer_expiry() tries to add a timer when it's already active.
To fix this, we simply add a request generation count that gets
incremented at every interrupt, and check in ide_timer_expiry() that
we have not already handled a new interrupt before running the expiry
function.
Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
IDE error recovery is using IDLE IMMEDIATE if the drive is busy or has DRQ set.
This violates the ATA spec (can only send IDLEÂ IMMEDIATE when drive is not
busy) and really hoses up some drives (modern drives will not be able to
recover using this error handling). The correct thing to do is issue a SRST
followed by a SET FEATURES command. This is what Western Digital recommends
for error recovery and what Western Digital says Windows does.  It also does
not violate the ATA spec as far as I can tell.
Bart:
* port the patch over the current tree
* undo the recalibration code removal
* send SET FEATURES command after checking for good drive status
* don't check whether the current request is of REQ_TYPE_ATA_{CMD,TASK}
type because we need to send SET FEATURES before handling any requests
* some pre-ATA4 drives require INITIALIZE DEVICE PARAMETERS command before
other commands (except IDENTIFY) so send SET FEATURES only if there are
no pending drive->special requests
* update comments and patch description
* any bugs introduced by this patch are mine and not Suleiman's :-)
Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The function ide_get_best_pio_mode() fails to return the correct IORDY setting
for the explicitly specified modes -- fix this along with the heading comment,
and also remove the long commented out code.
Also, while at it, correct the misliading comment about the PIO cycle time in
<linux/ide.h> -- it actually consists of only the active and recovery periods,
with only some chips also including the address setup time into equation...
[ bart: sl82c105 seems to be currently the only driver affected by this fix ]
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* since ide_hwif_t.ide_dma_host_on is called either when drive->using_dma == 1
or when return value is discarded make it void, also drop "ide_" prefix
* make __ide_dma_host_on() void and drop "__" prefix
v2:
* while at it rename atiixp_ide_dma_host_on() to atiixp_dma_host_on()
and sgiioc4_ide_dma_host_on() to sgiioc4_dma_host_on().
[ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* since ide_hwif_t.ide_dma_{host_off,off_quietly} always return '0'
make these functions void and while at it drop "ide_" prefix
* fix comment for __ide_dma_off_quietly()
* make __ide_dma_{host_off,off_quietly,off}() void and drop "__" prefix
v2:
* while at it rename atiixp_ide_dma_host_off() to atiixp_dma_host_off(),
sgiioc4_ide_dma_{host_off,off_quietly}() to sgiioc4_dma_{host_off,off_quietly}()
and sl82c105_ide_dma_off_quietly() to sl82c105_dma_off_quietly()
[ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Bartlomiej Zolnierkiewicz