If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.
Also this host driver requires valid PCI BAR4 for normal operation so
check it in ->init_chipset and fail initialization if not set.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.
Also this host driver requires valid PCI BAR4 for normal operation so
check it in ->init_chipset and fail initialization if not set.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Use ->OUTBSYNC instead of ->OUTB when writing command register
(needed for scc_pata and pmac host drivers).
* Don't check DRDY bit of the status register on ATAPI devices
(ATAPI devices are free to ignore DRDY bit).
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Cc: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Acked-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>
pmac_ide_tune_chipset() don't set drive->init_speed.
Fix it by setting drive->{current,init}_speed in pmac_ide_do_setfeature()
and clean up pmac_ide_{tune_chipset,mdma_enable,udma_enable}().
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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 host drivers depend on CONFIG_IDE_GENERIC to do the probing but their
config options lack explicit dependencies on IDE_GENERIC. In the long-term
these host drivers should be fixed to do the probing themselves but for now
fix them by making their config options select CONFIG_IDE_GENERIC.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
These days, CONFIG_IDE_GENERIC causes more confusion and
misconfiguration than it helps. Especially so because libata is
linked after the generic driver. Default to N.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Cc: "P.C.Chan" <pc.chan@alcatel-lucent.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Use pio == 255 == "auto-tune" in scc_config_drive_for_dma() instead of
forcing PIO4 on PIO fallback. Fix comment while at it.
* Rename scc_tuneproc() to scc_tune_pio() and add scc_tuneproc() wrapper.
Move finding of the best PIO mode and setting of transfer mode on the device
to the new wrapper.
* Fix scc_tune_chipset() to tune PIO modes. Do a small cleanup while at it.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Don't call {piix,slc90e66}_dma_2_pio() for PIO modes in
{piix,slc90e66}_tune_chipset().
* Add PIO1 handling to {piix,slc90e66}_tune_chipset().
* Bump driver version.
v2:
* Remove PIO modes from {piix,slc90e66}_dma_2_pio(), they are no longer needed
there (Noticed by Sergei)
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Set transfer mode on the device in jmicron_tuneproc(),
also add pio == 255 == "auto-tune" handling.
* Use jmicron_tuneproc() in jmicron_config_drive_for_dma().
* Remove no longer needed config_jmicron_chipset_for_pio().
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Rename it8213_tuneproc() to it8213_tune_pio() and add it8213_tuneproc()
wrapper. Move finding of the best PIO mode to the new wrapper.
* Add setting of transfer mode on the device to it8213_tuneproc().
* Don't call it8213_dma_2_pio() for PIO modes in it8213_tune_chipset().
* Use it8213_tuneproc() in it8213_config_drive_for_dma().
v2:
* Remove PIO modes from it8213_dma_2_pio(), they are no longer needed there
(Noticed by Sergei)
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Fix cs5535_tuneproc() to pass PIO transfer mode value instead of PIO mode
number to cs5535_set_speed() (fixes random PIO timings being programmed
and a possible OOPS). Do a little cleanup while at it.
* Fix cs5535_set_speed() to check if the mate device is present (fixes PIO0
taskfile timings being used if there is no other device on the cable).
* Use cs5535_tuneproc() in cs5535_dma_check(). The old code had the same
issue as cs5535_tuneproc() and add additionally caused 0x00-0x04 transfer
mode values (== default PIO, default PIO w/ IORDY + two invalid values)
being set on the device instead of values 0x08-0x0c (XFER_PIO_[0,4]).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Is this a bug? In original verison memset cleared sizeof(state) bytes
instead of sizeof(*state). If it was intentional then this patch is invalid.
If not intentional -> valid :) Please review.
Bart: Yes, it is a bug so this patch is a valid bugfix. :-)
drivers/ide/arm/icside.c | 18883 -> 18849 (-34 bytes)
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
drivers/ide/ide-tape.c: In function '__idetape_kmalloc_stage':
drivers/ide/ide-tape.c:2588: warning: large integer implicitly truncated to unsigned type
drivers/ide/ide-tape.c:2616: warning: large integer implicitly truncated to unsigned type
b_size in struct idetape_bh is an unsigned short. We sometimes assigne
PAGE_SIZE to it and PAGE_SIZE can be 64K or larger, so make it a u32.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix a couple of runtogether printks in cmd64x.c IDE driver by adding
proper newlines.
Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Recognise the FSC Amilo A1630's incarnation of a SiS5513 chip as laptop to
get UDMA100 support.
Signed-off-by: David Lamparter <equinox@diac24.net>
Cc: Lionel Bouton <Lionel.Bouton@inet6.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
As found by the Coverity checker, and reported by Adrian Bunk, this
fixes a overrun error in the CS5535 IDE driver. Somebody got a little
excited with the if() statement - the CS5535 only supports UDMA 0-4.
Bart:
Not a bug per se since the upper layer will never feed this function
with speed > XFER_UDMA_4 (thanks to ->ultra_mask being set to 0x1f).
Worth fixing anyway.
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The arm26 port has been in a state where it was far from even compiling
for quite some time.
Ian Molton agreed with the removal.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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>
Now that ide-floppy supports SG_IO we can add support for SCSI ioctls
(except deprecated SCSI_IOCTL_SEND_COMMAND and legacy CDROM_SEND_PACKET
ones - we can add them later iff really needed).
While at it remove handling of CDROMEJECT and CDROMCLOSETRAY ioctls from
generic_ide_ioctl():
- This prevents ide-{disk,tape,scsi} device drivers from obtaining
REQ_TYPE_BLOCK_PC type requests which are currently unsupported by
these drivers and which are potentially harmful (as reported by Andrew).
- There is no functionality loss since aforementioned ioctls will now be
handled by idefloppy_ioctl()->scsi_cmd_ioctl() (for devices using
ide-floppy driver) and by idecd_ioctl->cdrom_ioctl()->scsi_cmd_ioctl()
(for devices using ide-cd driver).
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.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>
* Check IORDY bit for PIO modes > 2.
* Some devices claim maximum PIO mode > 2 in id->tPIO, they were punished too
severly for this by being limited to PIO_SLOW. Limit them to PIO2 instead.
v2:
* Fix PIO number being returned incorrectly instead of PIO mode
(Noticed by Sergei).
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>
* Nowadays core IDE code handles restoring of PIO and DMA modes
(ide-io.c:ide_start_power_step() etc) so remove open-coded version
from sc1200_resume().
There should be no change in behavior because settings done by
sc1200_resume() were always overridden by generic_ide_resume()
and ide_{start,stop}_power_step().
* Bump driver version.
Cc: Mark Lord <mlord@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Do the same thing as probe_hwif() and always disable DMA so chipset DMA
enabled bit gets cleared (if the drive doesn't support DMA ide_set_dma()
won't try to tune it anyway).
* Add TODO comment about respecting ->using_dma setting.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver used to depend on BIOS settings for deciding whether it is OK
to use DMA. However it seems that BIOS doesn't always handle all cases
correctly so just let IDE core to decide about this. It should be a safe
thing to do now, after the driver went through heavy bugfixing.
Thanks for bugreport and testing the patch goes out to Sven Niedner.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Always set ->autotune so PIO gets correctly auto-tuned (previously
->autotune was only set when ->dma_base wasn't available, however
->ide_dma_check()/->speedproc() was always trying to tune PIO when
tuning DMA).
* Move code responsible for programming chipset for PIO mode from
svwks_tune_chipset() to svwks_tune_pio(). Don't tune PIO when tuning
DMA (this is no longer needed since ->autotune is always set now).
* Handle PIO modes early in svwks_tune_chipset() so DMA configuration
registers don't get cleared when programming PIO mode.
* Bump driver version.
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>
* Add sil_tuneproc() wrapper for siimage_tuneproc() which also sets
PIO mode on the device.
* Add missing ide_get_best_pio_mode() call to sil_tuneproc() so
"pio" == 255 (autotune) is handled correctly (previously PIO0 was used)
and "pio" values > 4 && < 255 are filtered to PIO4 (instead of PIO0).
* Add code limiting maximum PIO mode according to the pair device capabilities
to sil_tuneproc().
* Convert users of config_siimage_chipset_for_pio() to use sil_tune_pio() and
sil_tuneproc(). This fixes PIO fallback in siimage_config_drive_for_dma() to
use max PIO mode available instead of PIO4 (config_siimage_chipset_for_pio()
used wrong arguments for ide_get_best_pio_mode() and as a results always
tried to set PIO4).
* Remove no longer needed siimage_taskfile_timing()
and config_siimage_chipset_for_pio().
* Enable ->autotune unconditionally and remove PIO tuning for UDMA/MDMA modes
from siimage_speedproc()
* Bump driver version.
v2:
* Fix issues noticed by Sergei:
- correct pair device check
- trim only taskfile PIO to the slowest of the master/slave
- enable ->autotune unconditionally and remove PIO tuning for UDMA/MDMA modes
from siimage_speedproc()
- add TODO item for IORDY bugs
- minor cleanups
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Split off exisiting atiixp_tuneproc() into atiixp_tune_pio()
and then add setting device PIO mode to atiixp_tuneproc().
* Add missing ide_get_best_pio_mode() call to atiixp_tuneproc() so
"pio" == 255 (autotune) is handled correctly and "pio" values > 4 && < 255
are filtered to PIO4 (previously "pio" == 5 could result in wrong timings
being used and "pio" values > 4 && < 255 in an OOPS).
* Handle PIO modes early in atiixp_speedproc() so save_mdma_mode[]
doesn't get cleared.
* In atiixp_dma_check():
- fix max_mode argument for ide_get_best_pio_mode()
- don't call atiixp_dma_2_pio() so PIO1 doesn't get remapped to PIO0
- use atiixp_tuneproc() instead of atiixp_speedproc()
* Bump driver version.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Various old IDE drivers go mapping ROM devices for no apparent reason and
without using the ROM mapping API we now have. They don't actually use
the ROM they map and the new libata drivers are happy without it being
mapped so rather than port them lets just junk it for the next -rc1.
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The two CONFIG variables
CONFIG_ETRAX_IDE_CSE1_16_RESET
CONFIG_ETRAX_IDE_CSP0_8_RESET
appear to have been dead since way back in 2.5.xx days:
http://www.linuxhq.com/kernel/v2.5/75/arch/cris/drivers/Kconfig
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Michael Starvik <starvik@axis.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
One card submitted by user.
Signed-off-by: Marcin Juszkiewicz <openembedded@hrw.one.pl>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Workaround for errata A308: turn down the UDMA mode and retry
the DMA command when the data lost condition is detected.
take2:
udma_filter() hook is used to limit ATAPI UDMA mode.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Move to using inline function variant of eieio instead of inline assmebly.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Cc: kou.ishizaki@toshiba.co.jp
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
ide-disk calls
ide_end_request(drive, 0, 0);
to finish an unknown request, but this doesn't work so well for non-fs
requests, since ide_end_request() internally looks at ->hard_cur_sectors
to see how much data to end. Only file system requests store a transfer
value in there, pc requests fill out ->data_len as a byte based transfer
value instead.
Since we ask to end 0 bytes of that request, it will never be terminated
and ide-disk gets stuck in a loop "handling" that same request over and
over.
Switch __ide_end_request() to take a byte based transfer count, and
adjust ide_end_request() to look at the right field to determine how
much IO to end when it's being passed in 0.
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Tested-By: Giacomo Catenazzi <cate@debian.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).
Here is a short excerpt of the semantic patch performing
this transformation:
@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@
x =
- kmalloc
+ kzalloc
(E1,E2)
... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);
@@
expression E1,E2,E3;
@@
- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)
[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The old IDE driver is not ready to take generic SCSI commands, even if
it uses them for some specific issues (ie the tray open/close ioctls for
IDE CD-ROM's). Pointed out by Bartlomiej.
I'm sure we'll have it fixed properly soon enough, but for now we should
not allow it to cause problems.
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing
variant in the past. But with __GFP_ZERO it is possible now to do zeroing
while allocating.
Use __GFP_ZERO to remove the explicit clearing of memory via memset whereever
we can.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
bsg uses scsi_cmd_ioctl() for some SCSI/sg ioctl
commands. scsi_cmd_ioctl() gets a request queue from a gendisk
arguement. This prevents bsg being bound to SCSI devices that don't
have a gendisk (like OSD). This adds a request_queue argument to
scsi_cmd_ioctl(). The SCSI/sg ioctl commands doesn't use a gendisk so
it's safe for any SCSI devices to use scsi_cmd_ioctl().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (34 commits)
PCI: Only build PCI syscalls on architectures that want them
PCI: limit pci_get_bus_and_slot to domain 0
PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug failure
PCI: hotplug: acpiphp: remove hot plug parameter write to PCI host bridge
PCI: hotplug: acpiphp: fix slot poweroff problem on systems without _PS3
PCI: hotplug: pciehp: wait for 1 second after power off slot
PCI: pci_set_power_state(): check for PM capabilities earlier
PCI: cpci_hotplug: Convert to use the kthread API
PCI: add pci_try_set_mwi
PCI: pcie: remove SPIN_LOCK_UNLOCKED
PCI: ROUND_UP macro cleanup in drivers/pci
PCI: remove pci_dac_dma_... APIs
PCI: pci-x-pci-express-read-control-interfaces cleanups
PCI: Fix typo in include/linux/pci.h
PCI: pci_ids, remove double or more empty lines
PCI: pci_ids, add atheros and 3com_2 vendors
PCI: pci_ids, reorder some entries
PCI: i386: traps, change VENDOR to DEVICE
PCI: ATM: lanai, change VENDOR to DEVICE
PCI: Change all drivers to use pci_device->revision
...
An ST-506 disk these days is pretty much someone trying to pull ancient
data using an auxilliary controller. Pulling data from the BIOS or CMOS
is just plain wrong, since it's likely to be the primary OS disk... and
would be user-entered data anyway. Instead, require the user enters it
on the command line.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As suggested by Andrew, add pci_try_set_mwi(), which does not require
return-value checking.
- add pci_try_set_mwi() without __must_check
- make it return 0 on success, errno if the "try" failed or error
- review callers
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.
This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.
In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.
Compile tested with make all{yes,mod}config on x86_64 and i386.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
- I have unearthed very old bugs in stale drivers that still
used request->cmd as a READ|WRITE int
- This patch is maybe a proof that these drivers have not been
used for a long time. Should they be removed completely?
Drivers that currently do not work for sure:
drivers/acorn/block/fd1772.c | 2 +-
drivers/acorn/block/mfmhd.c | 8 ++++----
drivers/cdrom/aztcd.c | 2 +-
drivers/cdrom/cm206.c | 2 +-
drivers/cdrom/gscd.c | 2 +-
drivers/cdrom/mcdx.c | 2 +-
drivers/cdrom/optcd.c | 2 +-
drivers/cdrom/sjcd.c | 2 +-
Drivers with cosmetic fixes only:
b/drivers/block/amiflop.c
b/drivers/block/nbd.c
b/drivers/ide/legacy/hd.c
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Backport short cables support from pata_via.c.
This patch should allow UDMA > 2 modes on Acer Ferrari 3400.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Backport short cables support from pata_sis.c.
This patch allows UDMA > 2 modes on ASUS A6K.
Thanks to testing this patch goes out to Jiri Stavinoha.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Backport short cables support from pata_ali.c and while at it cleanup
existing cable detection code.
This patch should allow UDMA > 2 modes on HP Pavilion N5430 and Fujitsu P2000.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Backport short cables support from ata_piix.c.
This patch should allow UDMA > 2 modes on:
- Acer 5602WLMi
- Acer 3682WLMi
- Asus W5F
- Acer Aspire 2023WLMi
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.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>
ide-timing.h:
* remove handling of DMA modes from ide_find_best_mode() and rename it to
ide_find_best_pio_mode()
* drop no longer needed "map" argument from ide_find_best_pio_mode()
and delete needless ->id check
* remove no longer needed XFER_SWDMA and XFER_UDMA* defines
au1xxx-ide.c:
* use ide_max_dma_mode() instead of ide_find_best_mode()
* remove needless CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA #ifdef
amd74xx.c:
* store UDMA masks in amd_ide_chip[] and while at it make "base" field
to be u8 instead of unsigned long
* convert the driver to use UDMA masks from amd_ide_chip[]
* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
of ide_find_best_mode()
* delete stale comment from amd74xx_ide_dma_check()
* remove no longer needed AMD_UDMA* defines
via82cxxx.c:
* remove unused DISPLAY_VIA_TIMINGS define
* store UDMA masks in via_isa_bridges[] and while at it make "flags" field
to be u8 instead of u16
* convert the driver to use UDMA masks from via_isa_bridges[]
* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
of ide_find_best_mode()
* remove no longer needed VIA_UDMA* defines
pmac.c:
* use ide_max_dma_mode() instead of ide_find_best_mode()
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
This patch replaces an array size calculation in drivers/ide/legacy/hd.c
that was done using sizeof with the ARRAY_SIZE macro.
Tested by compilation on an i386 box using "allyesconfig".
Diffed against Linus' git-tree.
Signed-off-by: Andi Drebes <lists-receive@programmierforen.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Delete the unnecessary macro ARY_LEN and use ARRAY_SIZE directly.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This removes the support to treat "ALL" as a wildcard for
firmware revision. This is made a separate patch, as it will
break out-of-tree ide drivers that feed its own table that uses
"ALL" as the wildcard to ide_in_drive_list().
Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Earlier, the matching of (model,rev) in ide-dma black/white list
handling was to consider "ALL" in the table to match any
revision. This makes NULL to be also an accepted wildcard, and
changes the entries of tables in ide-dma.c to use NULL.
The code still accepts "ALL" as the wildcard, in order to keep
any out-of-tree ide driver that feeds its own table that uses
"ALL" as the wildcard to ide_in_drive_list() function from
breaking.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
There's no reason to have the speedproc() method wrapper for the two quite
different chip families, so just get rid of it.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.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>
--
Get rid of the init_dma() method (which had no particular reason to exist) by
folding it into the init_hwif() method. While at it, also perform some cleanup
in the latter method:
- get rid of the useless clearing of hwif->autodma;
- fold the serialization code into one 'if' statement;
- fold setting the drives' 'autotune' and 'autodma' fields into the single
statements...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Rework init_setup_aec6x80() so that it won't rewrite the constant name strings
anymore -- in order to do this:
- in aec62xx_init_one(), pass a local copy of 'struct pci_device_id' down the
call chain;
- change the names for in aec62xx_chipsets[] to default to AEC-6280[R];
- override the 'name' field in init_setup_aec6x80() only if bit 4 of the DMA
status register is set.
While at it, also change the 'udma_mask' field for AEC-6x80R chips in this
function and remove the code doing the same from the init_hwif() method...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix two minor issues with PCI0646 chip reporting in the init_chipset() method:
"IRQ workaround enabled" message printed out not only for revision 0x01 and
"CMD646: chipset revision" printed twice (by IDE core and the driver itself).
Also, remove empty/pointless switch cases for the chips other than PCI0646,
duplicate write to the MRDMODE register when enabling interrupts and MEMORY
READ LINE cycles, and needless/misplaced initialization of the timing registers
in this method.
Switch to reading only the PCI revision ID register itself, not the whole 32
bits at its address in init_chipset() and init_hwif() methods; in addition,
get rid of the useless clearing of hwif->autodma and perform some cosmetic
style changes in the latter method.
Refactor ata66_cmd64x() by moving all the code into the 'switch' statement,
renaming/adding variables, and fixing the coding style.
While at it, finally get rid of the meaningless aliasing register #define's...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Simplify UltraDMA mode filtering in the driver:
- make use of the newly introduced 'udma_mask' field of 'ide_pci_device_t' to
set the correct hwif->ultra_mask, modifying init_setup_hpt366() to select
the correct mask based on the chip revision;
- replace 'max_mode' field of the 'struct hpt_info' with 'max_ultra' specifying
the maximum UltraDMA mode allowed;
- rewrite hpt3xx_udma_filter() to differ the filters based on the 'chip_type'
field, and only use it for HPT366 and HPT370[A] where it's really necessary.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.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>
Switch the driver to always program DMA/PIO timings and set device transfer
mode instead of trusting BIOS on CSB6 controllers (libata pata_serverworks.c
driver is also doing things this way and there were no problems reported so
far). While doing conversion I noticed that the old code had many issues:
* the code was assuming that hwif->dma_status is always valid
(which obviously isn't true if hwif->dma_base == NULL)
* value of "(ultra_timing >> (4*unit)) & ~(0xF0)" expression wasn't checked
to fit into udma_modes[5]
* code validating DMA timings didn't validate corresponding PIO timings
* extra CSB5 PIO register wasn't validated et all
* hwif->ide_dma_off_quietly() is always called before ide_set_dma() (which in
turn calls hwif->speedproc() method - svwks_tune_chipset() in this case)
so the code depending on DMA capable bit of DMA status to be set was never
executed (=> the code was never validating DMA timings despite actually
enabling DMA if the PIO timings were OK!)
* on resume driver dependend entirely on BIOS to restore timings and set
transfer mode on the device
While at it:
There is no need to read PIO/MWDMA timings now so don't do it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
PIO4 is a maximum PIO mode supported by a driver. Using "255" as a max_mode
argument to ide_get_best_pio_mode() could result in wrong timings being used
by a driver (for "pio" equal to 5) or OOPS (for "pio" values > 5 && < 255).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Reviewed-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
The SiS966 has one additional PCI-ID 1180.
If the chipset is using this PCI-ID, the primary channel is connected to the
first PATA-port. The secondary channel is connected to SATA-ports in IDE
emulation mode. The legacy IO-ports are used.
The including of the PCI-ID into pata_sis is not sufficient, because the legacy
driver in drivers/ide is initialized before pata_sis.
Signed-off-by: Uwe Koziolek <uwe.koziolek@gmx.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
drivers/ide/setup-pci.c: In function 'ide_scan_pcibus':
drivers/ide/setup-pci.c:879: warning: ignoring return value of '__pci_register_driver', declared with attribute warn_unused_result
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Recently the PLL input clock of Promise 2027x is sometimes detected
higher than expected (e.g. 20.027 MHz compared to 16.714 MHz).
It seems sometimes the mdelay() function is not as precise as it
used to be. Per Alan's advice, HT or power management might affect
the precision of mdelay().
This patch calls gettimeofday() to measure the time elapsed and
calculate the PLL input clock accordingly.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bahadir Balban <bahadir.balban@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
SWDMA modes are unsupported by it821x. Attempts to tune SWDMA modes always
fail (due to sanity check in ->speedproc) and result in PIO being tuned.
* Fix incorrect SWDMA mask so core code won't try these modes and will just
tune PIO if no other DMA modes are available.
* Bump driver version.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
* Driver can't skip programming transfer mode on the device in amd_set_drive()
(similar fix has been applied to via82cxxx driver ages ago).
* While at it remove redundant warning (ide_config_drive_speed() already
produces more valuable one).
* Bump driver version.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The HPT36x chips finally turned out to have the channel enable bits -- however,
badly implemented. Make use of them despite it's probably only going to burden
the driver's code -- assuming both channels are always enabled by the HighPoint
BIOS anyway...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Linas Vepstas <linas@austin.ibm.com>
Cc: michal.kepien@poczta.onet.pl
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add the MAXTOR STM3320620A drive into the UltraDMA/66 mode blacklist
for the HPT36x chips.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Found by a static analyser. It is in theory possible we dereference
dev->id when it has become invalid. Re-order to avoid this.
Not needed for new-ide as we no longer support the crazy exabyte nest stuff
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Look at wait_drive_not_busy in drivers/ide/ide-taskfile.c:
static u8 wait_drive_not_busy(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
int retries = 100;
u8 stat;
/*
* Last sector was transfered, wait until drive is ready.
* This can take up to 10 usec, but we will wait max 1 ms
* (drive_cmd_intr() waits that long).
*/
while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
udelay(10);
if (!retries)
printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
return stat;
}
`printk' is never called because `retries' never holds zero at the
outside of `while' loop: when `retries' holds zero at the while's loop
condition, `retries' will hold -1 at the if condition.
Signed-off-by: Masatake YAMATO <jet@gyve.org>
Cc: Chuck Ebbert <cebbert@redhat.com>
Cc: joe@perches.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
generic_ide_resume() should check if dev->driver is not NULL before applying
to_ide_driver() to it. Fix that.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Eliminate UltraATA/133 support for HPT374 -- the chip isn't capable of this mode
according to the manual, and doesn't even seem to tolerate 66 MHz DPLL clock...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Geller Sandor <wildy@petra.hos.u-szeged.hu>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
generic IDE PCI driver, add another device exception
This device is char device and is grabbed by generic ide driver:
00:0b.0 Class ffff: National Semiconductor Corporation 87410 IDE (rev ff) (prog-if ff)
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Disallow generic IDE PCI driver to grab it by adding next condition. Also
consolidate exceptions to one bigger 'switch (dev->vendor)'.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Ingo Korb <ml@akana.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
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>
The DMA support for RAID mode broke after:
commit 71ef51cc17
Author: Jens Axboe <axboe@suse.de>
Date:  Fri Jul 28 09:02:17 2006 +0200
  [PATCH] it821x: fix ide dma setup bug
  Only enable dma for a valid speed setting.
  Signed-off-by: Jens Axboe <axboe@suse.de>
commit 0a8348d086
Author: Jens Axboe <axboe@suse.de>
Date:  Fri Jul 28 08:58:26 2006 +0200
  [PATCH] ide: if the id fields looks screwy, disable DMA
  It's the safer choice. Originally due to a bug in itx821x, but a
  generally sound thing to do.
  Signed-off-by: Jens Axboe <axboe@suse.de>
However it worked by pure luck before Jens' fixes: bogus ide_dma_enable()
usage in it821x driver combined with loosy check in ide_dma_verbose() allowed
the hardware to operate in DMA mode. When these problems were fixed the DMA
support broke...
The source root for the regression turned out to be that the it821x.c code
was clearing too much of id->field_valid. The IDE core code was using the
original value of id->field_valid to do the tuning but later DMA got disabled
in ide_dma_verbose() because of the incorrect id->field_valid fixup. Fix it.
While at it:
* Do fixup() after probing the drives but before tuning them (which is also
OK w.r.t. ide_undecoded_slave() fixup). This change fixes device IDENTIFY
data to be consistent before/after the tuning and allows us to remove extra
re-tuning of drives from it821x_fixups().
* Fake MWDMA0 enabled/supported bits in IDENTIFY data if the device has
DMA capable bit set (this is just to tell the IDE core that DMA is
supported since it821x firmware takes care of DMA mode programming).
* Don't touch timing registers and don't program transfer modes on devices
et all when in RAID mode - depend solely on firmware to do the tuning
(as suggested by Alan Cox and done in libata pata_it821x driver).
Thanks for testing the patch goes out to Thomas Kuther.
Cc: Thomas Kuther <gimpel@sonnenkinder.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Problem noticed by Joe Zbiciak, see
http://kerneltrap.org/node/8252
for details.
On CSB6 the driver is using BIOS settings and not programming DMA/PIO timings
itself. However the logic was completely broken and resulted in wrong timings
being silently allowed (instead of being corrected by the driver).
This bug would explain some data corruption/timeout issues with Serverworks
MegaIDE in RAID mode that Alan Cox has fixed recently with:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=2074a106f52b6371885afbd714e929d60d0e3f64
For 2.6.23 we may be better off with completely switching the driver to always
programming timings (libata pata_serverworks.c driver is doing things this way
and there were no problems reported so far) but for 2.6.22 lets fix the bug
in the simplest and the least intrusive way.
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove crappy code noticed by Linus, see
http://lkml.org/lkml/2007/5/23/476
for details.
While at it simplify logic a bit.
There should be no functionality changes caused by this patch.
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
There are a few entries in ata_device_blacklist[] in libata-core.c
marked with HORKAGE_NODMA but are missing from drive_blacklist[]
in ide-dma.c. This patch makes the lists in sync.
Also remove a duplicated entry for "SanDisk SDP3B-64".
Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Compiling with '-Wswitch-enum' I noticed following:
CC drivers/ide/ide-proc.o
drivers/ide/ide-proc.c: In function ‘proc_ide_read_imodel’:
drivers/ide/ide-proc.c:54: warning: enumeration value ‘ide_etrax100’ not handled in switch
drivers/ide/ide-proc.c:54: warning: enumeration value ‘ide_acorn’ not handled in switch
How about the following patch?
Signed-off-by: Mika Kukkonen <mikukkon@iki.fi>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
It turns out from customer reports to Red Hat and some PCI dumps that the
MegaIDE in RAID mode doesn't provide the drive tuning data that the
serverworks driver expects but sometimes does provide something that
fools the code.
For the RAID class case skip the oem setup and don't trust the BIOS data.
We then tune from scratch and this sorts it out. (This has been confirmed
on an afflicted IBM blade)
[libata serverworks.c never trusts the BIOS in the first place so is
accidentally immune]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add the IDE device ID to atiixp_pci_tbl struct in atiixp.c for ATI SB700.
From: Henry Su <henry.su@amd.com>
Signed-off-by: Luugi Marsan <luugi.marsan@amd.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Use menuconfigs instead of menus, so the whole menu can be disabled at once
instead of going through all options.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Not sure how this one got missed in the great purge some time ago but it did.
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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>
Add the speedproc() method for setting transfer modes, modify config_for_dma()
to call it and use ide_max_dma_mode() to select the best DMA mode.
Add support for the multiword DMA modes 0 and 1, using the upper half of the
'drive_data' field to store the DMA timings to program into the drive control
register when DMA is turned on for real.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* add {cs5530,sc1200}_tunepio() for programming PIO timings
* add {cs5530,sc1200}_tune_chipset() (->speedproc method) for setting
transfer mode and convert {cs5530,sc1200}_config_dma() to use it
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
sc1200.c:
* remove open-coded variant of ide_dma_host_off() (== ->dma_host_off),
it is not needed because ->dma_off_quietly calls ->dma_host_off
* use ->dma_host_on (== ide_dma_host_on() for this driver) instead of
open-coded variant, call it from the users of sc1200_config_dma2()
[ there is no need to call ->dma_host_on in sc1200_config_dma() because
core code takes care of calling ->ide_dma_on on successful execution
of ->ide_dma_check ]
* add comment about ->tuneproc interface abuse
cs5530.c/sc1200.c:
* core code takes care of calling ->dma_off_quietly before calling
->ide_dma_check so there is no need to call it in ->ide_dma_check methods
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CS5530/SC1200 specifies that two drives on the same cable cannot mix
UDMA/MDMA. Add {cs5530,sc1200}_udma_filter() to handle this. This also
makes it possible to remove open-coded best DMA mode selection and use
standard ide_use_dma()/ide_max_dma_mode() helpers. While at it bump
version numbers.
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
ide_start_power_step() and set_using_dma() were missing ->dma_off_quietly
call (comment in probe_hwif() states that DMA should be always cleared before
tuning is attempted). Fix it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* remove code enabling IORDY and prefetch from config_chipset_for_dma(),
as the comment states it has no real effect because these settings are
overriden when the PIO mode is set (and for this driver ->autotune == 1
so PIO mode is always programmed)
* use ide_tune_dma() in pdcnew_config_drive_xfer_rate() and remove no longer
needed config_chipset_for_dma()
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Use ide_tune_dma() in ali15x3_config_drive_for_dma() and remove all the open
coded DMA tuning code and also config_chipset_for_dma(). Set ->atapi_dma flag
correctly in init_hwif_common_ali15x3() so ide_tune_dma() can take care of
checking if ATAPI DMA is allowed and remove open coded ATAPI DMA check from
ali15x3_config_drive_for_dma().
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* limit max PIO mode to PIO4, this driver doesn't support PIO5 and attempt
to program PIO5 by config_art_rwp_pio() could result in incorrect PIO
timings being programmed and possibly the data corruption (for < ATA100
family chipsets PIO0 timings were used, for ATA100 and ATA100a - the random
content of test1 variable was used, for ATA133 - MWDMA0 timings were used)
* BUG() in sis5513_tune_chipset() if somebody tries to force unsupported PIO5,
also cleanup this function a bit while at it
* add comment about PIO0 timings for < ATA100 family chipsets
* remove open-coded best PIO mode selection from config_art_rwp_pio(),
it contained numerous bugs:
- it didn't check for validity of id->eide_pio_modes and id->eide_pio_iordy
before using them
- it tried to found out maximum PIO mode basing on minimum IORDY cycle time
(moreover wrong cycle times were used for PIO1/5)
- it was overriding PIO blacklist and conservative PIO "downgrade" done
by ide_get_best_pio_mode()
* use sis5513_tune_drive() instead of config_art_rwp_pio()
in sis5513_config_xfer_rate() so the correct PIO mode is also set
on drive even if the device is not IORDY/DMA capable
* config_art_rwp_pio() was always setting the best possible mode and not
the wanted one - fix it and move ide_get_best_pio_mode() call to
config_chipset_for_pio()
* don't use ide_find_best_mode() in config_chipset_for_pio(), it was being
overriden by config_art_rwp_pio() for the host timings anyway + we need to
set the same PIO mode on the device and the host
* pass correct "pio" argument (255 instead of 5) to sis5513_tune_drive() call
in sis5513_config_xfer_rate() so the best PIO mode is set on the drive
and not PIO4
* rename sis5513_tune_drive() to sis5513_tuneproc()
and config_chipset_for_pio() to sis5513_tune_driver()
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* limit max PIO mode to PIO4, this driver doesn't support PIO5 and attempt
to program PIO5 by svwks_tune_chipset() could result in incorrect PIO
timings being programmed and possibly the data corruption (it seems that
the minimum possible values were used but I lack the datasheets to be sure)
* select best PIO mode in svwks_tune_drive() and not in svwks_tune_chipset()
when doing PIO autotuning (pio == 255)
* don't try to tune PIO in config_chipset_for_dma() as ide_dma_enable() could
return 1 if DMA was previously enabled (svwks_config_drive_xfer_rate()
takes care of PIO tuning if no suitable DMA mode is found)
* remove config_chipset_for_pio() and use svwks_tune_drive() instead,
config_chipset_for_pio() contained numerous bugs when selecting PIO mode
(luckily it was only used for devices limited to PIO by capabilities/BIOS):
- it didn't check for validity of id->eide_pio_modes and id->eide_pio_iordy
before using them
- it tried to found out maximum PIO mode basing on minimum IORDY cycle time
(moreover wrong cycle times were used for PIO0/1/5)
- it was overriding PIO blacklist and conservative PIO "downgrade" done
by ide_get_best_pio_mode()
- if the max drive PIO was PIO5 then XFER_PIO_0/XFER_PIO_SLOW was selected
(XFER_PIO_SLOW is not supported by svwks_tune_chipset() so the result
was the same as if using XFER_PIO_5 => wrong PIO timings were set)
- it was overriding drive->current_speed
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This patch is based on the documentation (I would like to thank Promise
for it) and also partially on the older vendor driver.
Rewrite mode programming code:
* disable 66MHz clock in pdc202xx_tune_chipset() so it is correctly disabled
even if both devices on the channel are not DMA capable and after reset
* enable/disable IORDY and PREFETCH bits in pdc202xx_tune_chipset()
as they need to be setup correctly also for PIO only devices, plus IORDY
wasn't disabled for non-IORDY devices and PREFETCH wasn't disabled for
ATAPI devices
* remove dead code for setting SYNC_ERDDY_EN bits from config_chipset_for_dma()
(driver sets ->autotune to 1 so PIO modes are always programmed => lower
nibble of register A never equals 4 => "chipset_is_set" is always true)
* enable PIO mode programming for all ATAPI devices
(it was limited to ->media == ide_cdrom devices)
* remove extra reads of registers A/B/C, don't read register D et all
* do clearing / programming of registers A/B/C in one go
(gets rid of extra PCI config space read/write cycle)
* set initial values of drive_conf/AP/BP/CP variables to zero
(paranoia for the case when PCI reads fail)
* remove XFER_UDMA6 to XFER_UDMA5 remapping case - it can't happen
(ide_rate_filter() takes care of it)
* fix XFER_MW_DMA0 timings (they were overclocked, use the official ones)
* fix bitmasks for clearing bits of register B:
- when programming DMA mode bit 0x10 of register B was cleared which
resulted in overclocked PIO timing setting (iff PIO0 was used)
- when programming PIO mode bits 0x18 weren't cleared so suboptimal
timings were used for PIO1-4 if PIO0 was previously set (bit 0x10)
and for PIO0/3/4 if PIO1/2 was previously set (bit 0x08)
* add FIXME comment about missing locking for 66MHz clock register
Also while at it:
* remove unused defines
* do a few cosmetic / CodingStyle fixes
* bump driver version
v2:
* in pdc202xx_tune_chipset() the old content of drive configuration
registers is used only by the debugging code so cover "drive_conf"
PCI registers read by #if PDC202XX_DEBUG_DRIVE_INFO
(Noticed by Sergei Shtylyov)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion
cards. Convert all expansion card drivers to use them.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rather than having every driver fiddle about setting its private
IRQ operations and data, provide a helper function to contain
this functionality in one place.
Arrange to remove the driver-private IRQ operations and data when
the device is removed from the driver, and remove the driver
private code to do this.
This fixes potential problems caused by drivers forgetting to
remove these hooks.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add "depends on HAS_IOMEM" to a number of menus to make them
disappear for s390 which does not have I/O memory.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: fix PIO setup on resume for ATAPI devices
ide: legacy PCI bus order probing fixes
ide: add ide_proc_register_port()
ide: add "initializing" argument to ide_register_hw()
ide: cable detection fixes (take 2)
ide: move IDE settings handling to ide-proc.c
ide: split off ioctl handling from IDE settings (v2)
ide: make /proc/ide/ optional
ide: add ide_tune_dma() helper
ide: rework the code for selecting the best DMA transfer mode (v3)
ide: fix UDMA/MWDMA/SWDMA masks (v3)
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>
for consistency with other Open Firmware interfaces (and Sparc).
This is just a straight replacement.
This leaves the compatibility define in place.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Without the following patch, the kernel does not automatically detect
2GB CompactFlash cards from Transcend.
Signed-off-by: Fabrice Aeschbacher <fabrice.aeschbacher@siemens.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Peter Stuge <peter@stuge.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
HPT36x chip don't seem to have the channel enable bits, so prevent the IDE core
from checking them...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Michal Kepien <michal.kepien@poczta.onet.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* fix ->speedproc to set the drive speed
* this driver doesn't support SWDMA so use the correct ->swdma_mask
* BUG() if an unsupported mode is passed to ->speedproc
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This driver doesn't support SWDMA so use the correct ->swdma_mask.
While at it:
* no need to call config_chipset_for_pio() in config_chipset_for_dma(),
if DMA is not available config_chipset_for_pio() will be called
by siimage_config_drive_for_dma() and if DMA is available
config_siimage_chipset_for_pio() will be called by siimage_tune_chipset()
* remove needless config_chipset_for_pio() wrapper
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* limit max PIO mode to PIO4, this driver doesn't support PIO5 and attempt
to setup PIO5 by it821x_tuneproc() could result in incorrect PIO timings
+ incorrect base clock being set for controller in the passthrough mode
* move code limiting max PIO according to the pair device capabilities from
config_it821x_chipset_for_pio() to it821x_tuneproc() so the check is also
applied for mode change requests coming through ->tuneproc and ->speedproc
interfaces
* set device speed in it821x_tuneproc()
* in it821x_tune_chipset() call it821x_tuneproc() also if the controller is
in the smart mode (so the check for pair device max PIO is done)
* rename it821x_tuneproc() to it821x_tune_pio(), then add it821x_tuneproc()
wrapper which does the max PIO mode check; it worked by the pure luck
previously, pio[4] and pio_want[4] arrays were used with index == 255
so random PIO timings and base clock were set for the controller in the
passthrough mode, thankfully PIO timings and base clock were corrected
later by config_it821x_chipset_for_pio() call (but it was not called for
PIO-only devices during resume and for user requested PIO autotuning)
* remove config_it821x_chipset_for_pio() call from config_chipset_for_dma()
as the driver sets ->autotune to 1 and ->tuneproc does the proper job now
* convert the last user of config_it821x_chipset_for_pio() to use
it821x_tuneproc(drive, 255) and remove no longer needed function
While at it:
* fix few comments
* bump driver version
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Teach the driver's tuneproc() method to do PIO auto-runing properly since it
treated 5 instead of 255 as auto-tune request, and also passed the mode limit
of PIO5 to ide_get_best_pio_mode() despite supporting up to PIO4 only.
While at it, also:
- remove the driver's wrong claim about supporting SWDMA modes;
- stop hooking ide_dma_timeout() method as the handler clearly doesn't fit for
the task...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fold the parts of the ide_dma_end() methods identical to __ide_dma_end() into a
mere call to it.
Start using faster versions of the ide_dma_end() and ide_dma_test_irq() methods
for the PCI0646U and newer chips that have the duplicate interrupt status bits
in the I/O mapped MRDMODE register, determing what methods to use at the driver
load time. Do some cleanup/renaming in the "old" ide_dma_test_irq() method too.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix several issues with the driver's procfs output:
- when testing if channel is enabled, the code looks at the "simplex" bits, not
at the real enable bits -- add #define for the primary channel enable bit;
- UltraDMA modes 0, 1, 3 for slave drive reported incorrectly due to using the
master drive's clock cycle resolution bit.
While at it, also perform the following cleanups:
- don't print extra newline before the first controller's dump;
- correct the chipset names (from CMDxxx to PCI-xxx)
- don't read from the registers which aren't used for dump;
- better align the table column sizes;
- rework UltraDMA mode dump code;
- remove PIO mode dump code that has never been finished;
- remove the duplicate interrupt status (the MRDMODE register bits mirror those
those in the CFR and ARTTIM23 registers) and fold the dump into single line;
- correct the style of the ?: operators...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The IDE core looks at the wrong bit when checking if the secondary channel is
enabled on PCI0646 -- CNTRL register bit 7 is read-ahead disable, bit 3 is the
correct one.
Starting with PCI0646U chip, the primary channel can also be enabled/disabled --
so, add 'enablebits' initializers to each 'ide_pci_device_t' structure, handling
the original PCI0646 via adding the init_setup() method and clearing the 'reg'
field there if necessary...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver's ide_dma_test_irq() method was reading the MRDMODE register even on
PCI0643/6 where it was write-only -- fix this by always reading the "backward-
compatible" interrupt bits, renaming dma_alt_stat to irq_stat as the interrupt
status bits are not coupled to DMA.
In addition, wrong interrupt bit was tested/cleared for the primary channel --
it's bit 2 in all the chip specs and the driver used bit 1... :-/
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fold the now equivalent code in the ide_dma_check() method into a mere call to
ide_use_dma(). Make config_for_dma() return non-zero if DMA mode has been set
and call it from the ide_dma_check() method instead of ide_dma_on().
Defer writing the DMA timings to the chip registers until DMA is really turned
on (and do not enable IORDY for DMA).
Remove unneeded code from the init_hwif() method, improve its overall looks.
Rename the dma_start(), ide_dma_check(), and ide_dma_lostirq() methods, and
also use more proper hwif->dma_command, fix printk() and comment in the latter
one as well. While at it, cleanup style in several places.
Signed-off-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>
These are all the remaining instances of get_property. Simple rename of
get_property to of_get_property.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The subsystem rwsem is not used by the driver core at all, so the use of
it in the ide-proc code of it doesn't make any sense. Perhaps a local
lock might be needed, but I do not really think so.
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: linux ide <linux-ide@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ide_hwif_to_major[] has only 10 entries as there are 10 major numbers
reserved for IDE (if somebody needs more it shouldn't be hard to fix).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver crashes the kernel on HPT302N chips due to the missing initializer
for 'hpt302n.settings' having been unfortunately overlooked so far. :-<
Much thanks to Mike Mattie for pin-pointing the reason of crash.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add PCI ID for a newer variant of cardbus CF/IDE adapter card.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add "optical" to sysfs "media" attribute as already in /proc
Signed-off-by: Danny Kukawka <dkukawka@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
I get the following error messages when trying to open a CD device
(specifically, the Teac CD-ROM CD-224E) that has no media present:
hda: packet command error: status=3D0x51 { DriveReady SeekComplete Error }
hda: packet command error: error=3D0x54 { AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
This happens when a "start stop unit" command (0x1b 0 0 0 3 0 0 0 0 0)
is sent to the drive to try to close the CD-ROM tray, but this drive
doesn't have that capability (it's a slim portable-type CD-ROM), so it
reports sense key 5 (illegal request) with asc/ascq 24/0. This is
exactly how SFF8090i says it should respond.
But ide-cd.c (in cdrom_decode_status() ) just sees sense key 5 and spews
out an error. It then goes on to request sense data, and
cdrom_log_sense() understands this error and doesn't log it.
The patch, for kernel 2.6.20.4, suppresses this error message.
Signed-off-by: Stuart Hayes <stuart_hayes@dell.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
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 IDLE 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>
[ bart: the ressurection of 2 years old patch which slipped thru the cracks
(thanks to Sergei Shtylyov for finding it) ]
These is the patch to turn on pdc202xx_new for ATAPI DMA. When testing, it
works fine without the (request_bufflen % 256) workaround as needed in libata.
ide-scsi filters out (pc->request_transfer % 1024) and use PIO, so the pdc202xx
ATAPI DMA problem is avoid. Both ide-cd and ide-scsi won't hit the ATAPI DMA
problem on pdc202xx_new.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Since especially Serial ATA has it's own menu point now, I guess we can
change the description of the deprecated SATA driver as well, since the
new libATA subsystem is not configured through a SCSI low-level driver
anymore, but has it's own menu point.
From: Patrick Ringl <patrick_@freenet.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Since hwif->ide_dma_check and hwif->ide_dma_on never queue any commands
(ide_config_drive_speed() sets transfer mode using polling and has no error
recovery) we are safe with setting hwgroup->busy for the time while DMA
setting for a drive is changed (so it won't race against I/O commands in fly).
I audited briefly all ->ide_dma_check/->ide_dma_on/->tuneproc/->speedproc
implementations and they all look OK wrt to this change.
This patch finally allowed me to close kernel bugzilla bug #8169
(once again thanks to Patrick Horn for reporting the issue & testing patches).
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
"ide: fix drive side 80c cable check, take 2" patch from Tejun Heo (commit
fab59375b9) fixed 80c bit test (bit13 of word93)
but we also need to fix master/slave IDENTIFY order (slave device should be
probed first in order to make it release PDIAG- signal) and we should also
check for pre-ATA3 slave devices (which may not release PDIAG- signal).
[ Unfortunately the fact that IDE driver doesn't reset devices itself helps
only a bit as it seems that some BIOS-es reset ATA devices after programming
the chipset, some BIOS-es can be set to not probe/configure selected devices,
there may be no BIOS in case of add-on cards etc. ]
Since we are quite late in the release cycle and the required changes will
affect a lot of systems just revert the fix for now.
[ Please also see libata commit f31f0cc2f0. ]
Thanks goes out to Fernando Mitio Yamada for reporting the problem
and patiently testing patches.
Acked-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
All modern distributions have been setting these options to "y" for ages.
(additionally "n" cases have been obsoleted for few years). Therefore use
DMA by default and remove CONFIG_IDEDMA_{ICS,PCI}_AUTO (also remove no longer
needed CONFIG_IDEDMA_AUTO). This fixes DMA support for rare configurations
where CONFIG_IDEDMA_{ICS,PCI}_AUTO was set to "n" but "hdparm -d 1" was used
to enable DMA support and which were forced to PIO mode by "ide: don't allow
DMA to be enabled if CONFIG_IDEDMA_{ICS,PCI}_AUTO=n" patch. There is no
functionality loss because "ide=nodma" kernel option is still available.
Cc: Patrick Horn <phrh@yahoo.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
For CONFIG_IDEDMA_{ICS,PCI}_AUTO=n and/or "ide=nodma" option the host/device
are not programmed for DMA and it is also explicitly disabled by ide_set_dma()
(->ide_dma_check returns "-1"). However the code responsible for manually
enabling DMA ("hdparm -d 1") has a bug which results in DMA being erroneously
enabled - ide_set_dma() incorrectly passes "0" return value to set_using_dma().
This may work if BIOS/firmware configured the host/device for DMA and chipset
allows independent configuration of DMA/PIO modes but won't work after suspend
and is generally unsafe on many chipsets (possibly including data corruption
if the same registers are used for DMA/PIO timings).
This patch fixes kernel bugzilla bug #8169 (piix host driver fixes for
setting PIO mode exposed the problem described above). The side-effect of
the fix is that some rare configuration may be forced to PIO mode when DMA
mode was previously used - this is addressed by the next patch which removes
CONFIG_IDEDMA_{PCI,ICS}_AUTO config option completely.
Thanks goes out to Patrick Horn for reporting the issue, narrowing it down
to the specific commit and testing the fix. Also thanks to Sergei Shtylyov
for help in debugging the problem.
Cc: Patrick Horn <phrh@yahoo.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This patch fixes:
* the dependency of scc_pata on BLK_DEV_IDEDMA_PCI
* incorrect link to ide-core
* move scc_pata from ide/ppc to ide/pci
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Cc: Al Viro <viro@ftp.linux.org.uk>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
When libata is configured, the device is configured such that SATA and
PATA ports live in separate functions with different programming
interfaces. pata_jmicron and ide jmicron drivers can drive only the
PATA part.
This patch makes jmicron match PCI class code such that it doesn't
attach itself to the SATA part preventing the proper ahci driver from
attaching.
This change is suggested by Bartlomiej.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: justin@jmicron.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver wrongly takes the address setup time into account when calculating
the PIO recovery time -- this leads to slight overclocking of the PIO modes 0
and 1 (so, the prayers failed to help, as usual :-). Rework the code to be
calculating recovery clock count as a difference between the total cycle count
and the active count (we don't need to calculate the recovery time itself since
it's not specified for the PIO modes 0 to 2, and for modes 3 and 4 this formula
gives enough recovery time anyway in the chip's supported PCI frequency range).
This patch has been inspired by reading the datasheets and looking at what the
libata driver does; it has been compile-tested only (as usual :-) but anyway,
the new code gives the same or longer recovery times than the old one...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
It's bool and it depends on IDE => should depend on IDE=y
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Legacy IDE VLB host drivers didn't check for "probe" options when compiled
as modules, which was obviously wrong as we don't want module to poke at
random I/O ports by simply loading it. Fix it by adding "probe" module param
to legacy IDE VLB host drivers.
v2:
* don't obsolete old "ide0=dtc2278/ht6560b/qd65xx/ali14xx/umc8672"
IDE driver options yet (per Alan Cox's request) and enhance documentation
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove
* "hdx=serialize"
* "idex=noautotune"
* "idex=autotune"
kernel params, they have been obsoleted for ages.
"idex=serialize", "hdx=noautotune" and "hdx=autotune" are still available
so there is no funcionality loss caused by this patch.
v2:
* fix CONFIG_BLK_DEV_4DRIVES=y build broken by version 1 of the patch
[ /me wearing brown paper bag ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
On Tuesday 27 February 2007, Akira Iguchi wrote:
>
> But since I sent the first patch, I found a bug for checking DMA IRQ status.
> (http://www.spinics.net/lists/linux-ide/msg06903.html)
> Then I sent the fixed patch for libata only. So my drivers/ide patch
> still has same bug and I want to fix it, too.
>
> The following patch fixes this bug. Please apply this patch.
From: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Revised DRAC4 warning as Jeff suggested, this one includes more info
about why the problem occurs
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix breakage added in the IDE devel tree.
Add header, then fix
drivers/ide/ppc/pmac.c: In function `pmac_ide_setup_dma':
drivers/ide/ppc/pmac.c:2044: warning: assignment from incompatible pointer type
drivers/ide/ppc/pmac.c: In function `pmac_ide_dma_host_on':
drivers/ide/ppc/pmac.c:1989: warning: control reaches end of non-void function
include/linux/pci.h: In function `pmac_ide_init':
drivers/ide/ppc/pmac.c:1563: warning: ignoring return value of `pci_register_driver', declared with attribute warn_unused_result
Then add some apparently-long-missing error handling.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add CFA devices from I-O Data, Mitsubishi and Viking. Add SanDisk comment.
Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
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>
The tuneproc() method in both these drivers failed to set the drive's own speed.
Fix this by renaming the function and "wrapping around it" the new tuneproc()
method. Switch back to calling tuneproc() in the PIO fallback code.
While at it, also convert the rest of the PIO timing code into proper C. :-)
Has been kind of tested on SLC90E66. I'm too lazy to reboot my box and test
on ICH4... :-)
[ bart: I quickly tested it on ICH4. ]
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
eighty_ninty_three() had word 93 validitity check but not the 80c bit
test itself (bit 13). This increases the chance of incorrect wire
detection especially because host side cable detection is often
unreliable and we sometimes soley depend on drive side cable
detection. Fix it.
[ bart: fix off-by-1 bit name in the patch description ]
Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver's tuneproc() method fails to set the drive's own speed -- fix this
by renaming the function to cmd64x_tune_pio(), making it return the mode set,
and "wrapping" the new tuneproc() method around it; while at it, also get rid
of the non-working prefetch control code (filtering out related argument values
in the "wrapper"), remove redundant PIO5 mode limitation, make cmdprintk() give
more sensible mode info, and remove mention about the obsolete /proc/ interface.
Get rid of the broken config_chipset_for_pio() which always tried to set PIO4,
switch to always auto-tuning PIO instead.
Oh, and add the missing PIO5 support to the speedproc() method while at it. :-)
Warning: compile tested only -- getting to the real hardware isn't that easy...
On Tuesday 06 February 2007 22:11, Mikael Pettersson <mikpe@it.uu.se> wrote:
>
> Worked fine on my SPARC Ultra5 with a CMD646 IDE controller.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
The driver's tuneproc() method fails to set the drive's own speed -- fix this
by renaming the function to ali15x3_tune_pio() and "wrapping" the new tuneproc()
method around it and making it return the mode set, update the heading comment.
Also, setting PIO mode via the speedproc() method does not work due to passing
to the tuneproc() method's a mode number not biased by XFER_PIO_0 -- fix this
along with a typo in the heading comment...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
Documentation/kernel-docs.txt update.
arch/cris: typo in KERN_INFO
Storage class should be before const qualifier
kernel/printk.c: comment fix
update I/O sched Kconfig help texts - CFQ is now default, not AS.
Remove duplicate listing of Cris arch from README
kbuild: more doc. cleanups
doc: make doc. for maxcpus= more visible
drivers/net/eexpress.c: remove duplicate comment
add a help text for BLK_DEV_GENERIC
correct a dead URL in the IP_MULTICAST help text
fix the BAYCOM_SER_HDX help text
fix SCSI_SCAN_ASYNC help text
trivial documentation patch for platform.txt
Fix typos concerning hierarchy
Fix comment typo "spin_lock_irqrestore".
Fix misspellings of "agressive".
drivers/scsi/a100u2w.c: trivial typo patch
Correct trivial typo in log2.h.
Remove useless FIND_FIRST_BIT() macro from cardbus.c.
...
* 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>
* add ide_set_dma() helper and make ide_hwif_t.ide_dma_check return
-1 when DMA needs to be disabled (== need to call ->ide_dma_off_quietly)
0 when DMA needs to be enabled (== need to call ->ide_dma_on)
1 when DMA setting shouldn't be changed
* fix IDE code to use ide_set_dma() instead if using ->ide_dma_check directly
v2:
* updated for scc_pata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
All users of ->mmio == 1 are gone so convert ->mmio into flag.
Noticed by Alan Cox.
v2:
* updated for scc_pata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This results in smaller/faster/simpler code and allows future optimizations.
Also remove no longer needed ide[_mm]_{inl,outl}() and ide_hwif_t.{INL,OUTL}.
v2:
* updated for scc_pata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* add ide_use_fast_pio() helper for use by host drivers
* add DMA capability and hwif->autodma checks to ide_use_dma()
- au1xxx-ide/it8213/it821x drivers didn't check for (id->capability & 1)
[ for the IT8211/2 in SMART mode this check shouldn't be made but since
in it821x_fixups() we set DMA bit explicitly:
if(strstr(id->model, "Integrated Technology Express")) {
/* In raid mode the ident block is slightly buggy
We need to set the bits so that the IDE layer knows
LBA28. LBA48 and DMA ar valid */
id->capability |= 3; /* LBA28, DMA */
we are better off using generic helper if we can ]
- ide-cris driver didn't set ->autodma
[ before the patch hwif->autodma was only checked in the chipset specific
hwif->ide_dma_check implementations, for ide-cris it is cris_dma_check()
function so there no behavior change here ]
v2:
* updated patch description (thanks to Alan Cox for the feedback)
v3:
* updated for scc_pata driver
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
In cmd64x, siimage and scc_pata drivers:
* don't set drive->init_speed as it should be already
set by successful execution of ide_set_xfer_rate()
* use hwif->speedproc functions directly
Above changes allows removal of EXPORT_SYMBOL_GPL(ide_set_xfer_rate).
v2:
* updated for scc_pata driver
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This field is no longer used by the core IDE code so fix ide-{disk,floppy}
drivers to keep openers count in the driver specific objects and remove
it from ide-{cd,scsi,tape} drivers (it was write-only).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* remove bogus comment for sis5513_config_xfer_rate()
* there is no need to call config_drive_art_rwp() because
it is called by config_art_rwp_pio()
* remove needless wrapper
* remove stale "TODO" comment
(IDE core should provide generic tuning code)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* disable DMA masks if no_piix_dma is set and remove now
not needed no_piix_dma_check from piix_config_drive_for_dma()
* there is no need to read register 0x55 in init_hwif_piix()
* move cable detection code to piix_cable_detect()
* remove unreachable 82371MX code from init_hwif_piix()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* remove redundant svwks_ide_dma_end() [ __ide_dma_end() is used by default ]
* remove init_dma_svwks() so the default ide_setup_dma() function is used
[ init_setup_csb6() takes care of not initializing disabled channels ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* BUG() on unknown DMA mode in cs5530_config_dma()
* there is no need to call hwif->ide_dma_host_{off,on}() in
cs5530_config_dma() because hwif->ide_dma_host_{off,on}()
is called by hwif->ide_dma_off_{quietly,on}()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
In drivers/ide/Kconfig BLK_DEV_TRM290 depends on
BLK_DEV_IDEDMA_PCI (on which is BLK_DEV_IDEDMA dependant on).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This is the patch (based on 2.6.19-rc4) for PATA controller of
Toshiba Cell reference set(Celleb). The reference set consists
of Cell, 512MB memory, Super Companion Chip(SCC) and some
peripherals such as HDD, GbE, etc. You can see brief explanation
and picture of Cell reference set at following URLs.
http://www.toshiba.co.jp/about/press/2005_09/pr2001.htmhttp://cell-industries.com/toshiba_announces.php
We use a drivers/ide driver because its design is more suitable for
SCC IDE controller than libata driver. Since SCC supports only 32bit
read/write, we must override many callbacks of ata_port_operations
by modifying generic helpers. Each time the libata common code is
updated, we must update those modified helpers. It is very hard for us.
But we will try to implement the libata driver as needed.
Signed-off-by: Kou Ishizaki <kou.ishizaki at toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi at toshiba.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix a number of issues with the DMA support code:
- driver claims support for all SW/MW DMA modes while supporting only MWDMA2;
- ide_dma_check() method tries to enable DMA on the "known good" drives which
don't support MWDMA2;
- ide_dma_on() method upon failure to set drive to MWDMA2 re-tunes already
tuned PIO mode and calls ide_dma_off() method instead of returning error;
- ide_dma_off() method sets drive->current_speed while it doesn't actually
change (only the PIO timings are re-loaded into the chip's registers);
- init_hwif() method forcibly sets/resets both "drive DMA capable" bits while
this is properly handled by ide_dma_{on,off}() methods being called later...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix the driver's tuneproc() method to always set the PIO mode requested and not
pick the best possible one, rename it to pdc202xx_tune_drive(), and change the
calls to it accordingly; remove the preceding comment which has nothing to do
with the code.
Sergei Shtylyov wrote:
> The tuneproc() method should take arg 255 for auto-selecting the best PIO
> mode, not 5 as it did here + this driver's method always auto-selected instead
> of setting the mode it's been told to -- issue typical to drivers/ide/...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix two typos found by SiI680A documentation check. They caused the taskfile
transfer overclocking:
- in PIO mode 1 as 0x2283 must be used for both data and taskfile transfers;
- in PIO mode 2 as data and taskfile timings are swapped when writing to the
MMIO regs.
Fix coding style and trailing whitespace in enclosing statements while at it...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
drivers/ide/pci/siimage.c | 59 ++++++++++++++++++++++------------------------
1 file changed, 29 insertions(+), 30 deletions(-)
patch 2/2:
Remove clearing bmdma status from cdrom_decode_status() since ATA devices
might need it as well.
(http://lkml.org/lkml/2006/12/4/201 and http://lkml.org/lkml/2006/11/15/94)
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "Adam W. Hawks" <awhawks@us.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
patch 1/2 (revised):
- Fix drive->waiting_for_dma to work with CDB-intr devices.
- Do the dma status clearing in ide_intr() and add a new
hwif->ide_dma_clear_irq for Intel ICHx controllers.
Revised per Alan, Sergei and Bart's advice.
Patch against 2.6.20-rc6. Tested ok on my ICH4 and pdc20275 adapters.
Please review/apply, thanks.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "Adam W. Hawks" <awhawks@us.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
A ZIP or similar with unformatted media will cause crashes when attempts
are made to read/write it in some cases. This is because bs_factor is
zero and we divide by it causing an oops.
As the size of a non-accessible/non-existant media is really a bit of a
zen question it doesn't matter if non-existant media is 512 bytes per
sector or zero. Setting it to 1 causes us to generate 512 bytes/sector
accesses and error properly.
Based on a fix found lurking in an ancient bugzilla entry since about 2004 (ugghhh)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* atiixp: if DMA can't be used atiixp_config_drive_for_dma() should return 0,
atiixp_dma_check() will tune the correct PIO mode anyway
* jmicron: if DMA can't be used config_chipset_for_dma() should return 0,
micron_config_drive_for_dma() will tune the correct PIO mode anyway
config_jmicron_chipset_for_pio(drive, !speed) doesn't program
device transfer mode for speed != 0 (only wastes some CPU cycles
on ide_get_best_pio_mode() call) so remove it
* triflex: if DMA can't be used triflex_config_drive_for_dma() should return 0,
triflex_config_drive_xfer_rate() will tune correct PIO mode anyway
Above changes also fix (theoretical) issue when ->speedproc fails to set
device transfer mode (i.e. when ide_config_drive_speed() fails to program it)
but one of DMA transfer modes is already enabled on the device by the BIOS.
In such scenario ide_dma_enable() will incorrectly return true statement
and ->ide_dma_check will try to enable DMA on the device.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* remember to clear reg2 bits for the current device before setting mode
* remove no longer needed hpt34x_clear_chipset()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there. Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.
To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.
Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm. I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).
Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Many struct file_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bug: pnx8550 code creates directory but resets ->nlink to 1.
create_proc_entry() et al will correctly set ->nlink for you.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Corey Minyard <minyard@acm.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This adds the module name to all PCI drivers, if they are built into the
kernel or not. It will show up in /sys/modules/MODULE_NAME/drivers/
It also fixes up the IDE core, which was calling __pci_register_driver()
directly.
Cc: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/ide/ide-acpi.c: In function 'ide_acpi_get_timing':
drivers/ide/ide-acpi.c:537: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'long unsigned int'
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This patch implements ACPI integration for generic IDE devices.
The ACPI spec mandates that some methods are called during suspend and
resume. And consequently there most modern Laptops cannot resume
properly without it.
According to the spec, we should call '_GTM' (Get Timing) upon suspend
to store the current IDE adapter settings.
Upon resume we should call '_STM' (Set Timing) to initialize the
adapter with the stored settings; afterwards '_GTF' (Get Taskfile)
should be called which returns a buffer with some IDE initialisation
commands. Those commands should be passed to the drive.
There are two module params which control the behaviour of this patch:
'ide=noacpi'
Do not call any ACPI methods (Disables any ACPI method calls)
'ide=acpigtf'
Enable execution of _GTF methods upon resume.
Has no effect if 'ide=noacpi' is set.
'ide=acpionboot'
Enable execution of ACPI methods during boot.
This might be required on some machines if 'ide=acpigtf' is
selected as some machines modify the _GTF information
depending on the drive identification passed down with _STM.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
On Thursday 11 January 2007 23:17, Bartlomiej Zolnierkiewicz wrote:
>
> My working IDE tree (against Linus' tree) now resides here:
>
> http://kernel.org/pub/linux/kernel/people/bart/pata-2.6/patches/
Bart, here's a driver I've been keeping out-of-tree for the past couple
of years. This is for the Delking/Lexar/ASKA/etc.. 32-bit cardbus IDE
CompactFlash adapter card.
It's probably way out of sync with the latest driver model (??), but it
still builds/works. I'm not interested in doing much of a rewrite, other
than for libata someday, as I no longer use the card myself.
But lots of other people do seem to use it, so it might be nice to see it
"in-tree".
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* set ATAPI/IORDY/TIME bits correctly in it8213_tuneproc()
* fix UDMA/MWDMA/SWDMA masks in it8213_init_hwif()
* in it8213_tune_chipset() SWDMA2 mode should be used instead of MWDMA0
* backport various fixes from piix/slc90e66 drivers:
- in it8213_tuneproc() the highest possible PIO mode is PIO4 (not PIO5)
- clear ATAPI/IORDY/TIME bits before setting them also for slave device
- use ->speedproc in it8213_config_drive_for_dma()
- don't try to tune PIO in config_chipset_for_pio()
- simplify is_slave calculation in it8213_tuneproc()
- misc cleanups
* fix it8213_ratemask() and it8213_tuneproc() comments
* simplify it8213_init_hwif()
* remove init_chipset_it8213()
* add missing Copyrights and update MODULE_AUTHOR()
* CodingStyle cleanups
* remove dead code
v2:
* PCI_DEVICE_ID_ITE_8213 is only defined in -mm kernels,
so just use PCI Device ID (0x8213) directly
* fix ->ultra_mask incorrectly changed to 0x3f in v1 version of the patch
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This is the driver for the Toshiba TC86C001 GOKU-S PCI IDE controller,
completely reworked from the original brain-damaged Toshiba's 2.4 version.
This single channel UltraDMA/66 controller is very simple in programming,
yet Toshiba managed to plant many interesting bugs in it. The particularly
nasty "limitation 5" (as they call the errata) caused me to abuse the IDE
core in a possibly most interesting way so far. However, this is still
better than the #ifdef mess in drivers/ide/ide-io.c that the original
version included (well, it had much more mess)...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fold check_in_drive_lists() into quirkproc() handler in both PDC202xx
drivers-- this function was never called with a list other than
pdc_quirk_drives and was a bad example of code overall...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove the following useless fragments from the driver:
- the ide_dma_lostirq() and ide_dma_timeout() handlers which boil down to just
printing the incoherent reset message and calling their default counterparts;
- check for non-NULL drive->id in the ide_dma_check() handler -- this is assumed
to be true by all other handlers (also, get rid of unnecessary nesting of the
conditional statements there);
- the comment before pdcnew_tune_drive() which has nothing to do with the code.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Synchronize with version 0.46 of the Intel PIIX/ICH driver:
- carry over Alan's and my own fixes in the tuneproc() method and my cleanups
both there and in the ratemask() method;
- SLC90E66 only supports MW DMA modes 1/2 and SW DMA mode 2 (just like Intel
chips), so don't claim support for other MW/SW DMA modes;
- don't check dor non-NULL drive->id in the ide_dma_check() method -- this is
assumed to be true in all other drivers;
- do some coding/formatting cleanups while at it...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix/cleanup the driver's tuneproc() and ratemask() methods:
- PPE, IE, and TIME bits need to be cleared beforehand for the slave drive as
well as master (Alan probably just forgot about it);
- this driver only supports PIO modes up to 4, so must pass the correct limit
to ide_get_best_pio_mode();
- use min_t() macro instead of min();
- simplify slave vs master drive evaluation;
- do come coding and formatting cleanups...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
According to the datasheet, Intel 82371MX (MPIIX) actually has only a
single IDE channel mapped to the primary or secondary ports depending on
the value of the bit 14 of the IDETIM register at PCI config. offset 0x6C
(the register at 0x6F which the driver refers to. doesn't exist). So,
disguise the controller as dual channel and set enablebits masks/values
such that only either primary or secondary channel is detected enabled.
Also, preclude the IDE probing code from reading PCI BARs, this controller
just doesn't have them (it's not the separate PCI function like the other
PCI controllers), it only decodes the legacy addresses.
[ Alan sayeth " MPIIX does not work with or without the change. It needs its
own different driver and not to use setup-pci. Huge job and since it works
well with libata who cares. Ditto the early PIIX chip." ]
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix minor coding mistake in the HPT36x PCI clock detection code noticed by
Bartlomiej Zolnierkiewicz -- it always reported 33 MHz due to the missing
'break' statements. This, however, most probably never mattered -- in fact, I
was thinking of removing the 25/40 MHz cases completely since HPT36x BIOSes
didn't seem to set any other value than 7 into the 'cmd_high_time' field, i.e.
supported only 33 MHz PCI.
Note that in the original driver there was another bug: 25 and 40 MHz cases
were interchanged. Since the 'cmd_high_time' field is in units of PCI clocks,
a lower clock count just *cannot* correspond to a higher frequency, i. e. it
should be 5 for 25 MHz PCI and 9 for 40 MHz PCI, not the other way around.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Finally, rework the driver init. code to correctly handle all the chip
variants HighPoint has created so far. This should cure the rest of the
timing issues in the driver (especially, on 66 MHz PCI) caused by the
HighPoint's habit of switching the base DPLL clock with every new revision
of the chips...
- switch to using the enumeration type to differ between the numerous chip
variants, matching PCI device/revision ID with the chip type early, at the
init_setup stage;
- extend the hpt_info structure to hold the DPLL and PCI clock frequencies,
stop duplicating it for each channel by storing the pointer in the pci_dev
structure: first, at the init_setup stage, point it to a static "template"
with only the chip type and its specific base DPLL frequency, the highest
supported DMA mode, and the chip settings table pointer filled, then, at
the init_chipset stage, allocate per-chip instance and fill it with the
rest of the necessary information;
- get rid of the constant thresholds in the HPT37x PCI clock detection code,
switch to calculating PCI clock frequency based on the chip's base DPLL
frequency;
- switch to using the DPLL clock and enable UltraATA/133 mode by default on
anything newer than HPT370/A;
- fold PCI clock detection and DPLL setup code into init_chipset_hpt366(),
unify the HPT36x/37x setup code and the speedproc handlers by joining the
register setting lists into the table indexed by the clock selected;
- add enablebits for all the chips to avoid touching disabled channels
(though the HighPoint BIOS seem to only disable the primary one on
HPT371/N);
- separate the UltraDMA and MWDMA masks there to avoid changing PIO timings
when setting an UltraDMA mode in hpt37x_tune_chipset().
This version has been tested on HPT370/302/371N.
Thanks to Alan for the inspiration. Hopefully, his libata driver will also
benefit from the work done on this "obsolete" driver...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Clean up DMA timeout handling for HPT370:
- hpt370_lostirq_timeout() cleared the DMA status which made __ide_dma_end()
called afterwards return the incorrect result, and the DMA engine was reset
both before and after stopping DMA while the HighPoint drivers only do it
after (which seems logical) -- fix this and also rename the function;
- get rid of the needless mutual recursion in hpt370_ide_dma_end() and
hpt370_ide_dma_timeout();
- get rid of hpt370_lostirq_timeout() since hwif->ide_dma_end() called from
the driver's interrupt handler later does all its work.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Continue with the driver rewrite:
- move the interrupt twiddling code from the speedproc handlers into the
init_hwif_hpt366 which allows to merge the two HPT37x speedproc handlers
into one;
- get rid of in init_hpt366 which solely consists of the duplicate code, then
fold init_hpt37x() into init_chipset_hpt366();
- fix hpt3xx_tune_drive() to always set the PIO mode requested, not the best
possible one, change hpt366_config_drive_xfer_rate() accordingly, simplify
it a bit;
- group all the DMA related code together init_hwif_hpt366(), and generally
clean up and beautify it.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Begin the real driver redesign. For the starters:
- cache the offset of the IDE channel's MISC. control registers which are used
throughout the driver in hwif->select_data;
- only touch the relevant MCR when detecting the cable type on HPT374's
function 1;
- make HPT36x's speedproc handler look the same way as HPT37x ones; fix the
PIO timing register mask for HPT37x.
- rename all the HPT3xx register related variables consistently; clean up the
whitespace.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Switch to using pci_get_slot() to get to the function 1 of HPT36x/374 chips --
there's no need for the driver itself to walk the list of the PCI devices, and
it also forgets to check the bus number of the device found.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
- Rework the driver setup code so that it prefixes the driver startup
messages with the real chip name.
- Print the measured f_CNT value and the DPLL setting for non-HPT3xx
chips as well.
- Claim the extra 240 bytes of I/O space for all chips, not only for
those having PCI device ID of 0x0004.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
- Rework hpt3xx_ratemask() and hpt3xx_ratefilter() so that the former
returns the max. mode computed at the load time and doesn't have to do
bad Ultra33 drive list lookups anymore; remove the duplicate code from
the latter function. Move the quirky drive list lookup into
hpt3xx_quirkproc() where it should have been from the start...
- Disable UltraATA/100 for HPT370 by default as the 33 MHz ATA clock
being used does not allow for it, and this *greatly* increases the
transfer speed.
- Save some space by using byte-wide fields in struct hpt_info; switch to
reading the 8-bit PCI revision ID reg. only, not the whole 32-bit reg.
- Start incrementing the driver version number with each patch (should
have been done from the first one posted).
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
