Add rudimentary check for the case that the page table overflows due to
merging of s/g elements by the IOMMU. This would have lead to
overwriting of arbitrary memory.
After this change I expect that an offending command will be
unsuccessfully retried until the scsi_device is taken offline by SCSI
core. It's a border case and not worth to implement a recovery
strategy.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Kristian Høgsberg <krh@redhat.com>
Replace a cast with a container_of(). As long as nobody reorders the
structure elements, they do the same thing, but container_of() is more
readable.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added complete_command_orb)
Acked-by: Kristian Høgsberg <krh@redhat.com>
The isochronous packet format is still not documented, but this
is a good first step.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (format, wording)
This affects of course only the "soft shutdown" case, e.g. "modprobe -r
firewire-sbp2", while it doesn't matter for hot unplug.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
This currently only affects one bridge in the hardwired blacklist.
I don't own one of those, hence haven't tested it.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
cleanup after "firewire: support S100B...S400B and link slower than PHY"
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Use a speed probe to determine the speed over 1394b buses and of nodes
which report a link speed less than their PHY speed.
Log the effective maximum speed of newly created nodes in dmesg.
Also, read the config ROM (except bus info block) at the maximum speed
rather than S100. This isn't a real optimization though because we
still only use quadlet read requests for the entire ROM.
The patch also adds support for S1600 and S3200, although such hardware
does not exist yet.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Table-based gap count optimization cannot be used if 1394b repeater PHYs
are present. But it does work with 1394b leaf nodes.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
cleanup after support of single-buffer requests was dropped
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Kristian Hoegsberg <krh@redhat.com>
Based on patch "the scheduled removal of RAW1394_REQ_ISO_{SEND,LISTEN}"
from Adrian Bunk, November 20 2006.
This patch also removes the underlying facilities in ohci1394 and
disables them in pcilynx. That is, hpsb_host_driver.devctl() and
hpsb_host_driver.transmit_packet() are no longer used for iso reception
and transmission.
Since video1394 and dv1394 only work with ohci1394 and raw1394's rawiso
interface has never been implemented in pcilynx, pcilynx is now no
longer useful for isochronous applications.
raw1394 will still handle the request types but will complete the
requests with errors that indicate API version conflicts.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This is upwards compatible, except that integer values other than 0 or 1
are no longer accepted. But values like "Y", "N", "no", "nnoooh!" work
now.
Also, improve a comment on the serialize_io parameter and make the
ORB_SET_EXCLUSIVE macro ultra-safe.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Association of a host device with a node on NUMA machines optimizes
allocations of skbs given from the networking stack to eth1394.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
After ieee1394 was converted away from class_device like the networking
subsystem was already in 2.6.21, eth1394's device may point to the
fw-host device as its parent again like in 2.6.20.
This affects userspace tools which examine the sysfs representation of
eth1394's device.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Remove the global nodemgr_serialize mutex which enclosed most of the
host thread event loop. This allows for parallelism between several
host adapter cards.
Properly serialize the driver hooks .update(), .suspend(), .resume(),
and .remove() by means of device->sem. These hooks can be called from
outside the host threads' contexts.
Get() and put() the device.driver when calling its hooks.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Here is a straightforward conversion to "struct device". The "struct
class_device" will be removed from the kernel.
It seems to work fine for me with and without CONFIG_SYSFS_DEPRECATED
set.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
I was told that only i386 aligns 64 bit integers at 4 bytes boundaries
while all other architectures (32 bit architectures with 64 bit
siblings) align it on 8 bytes boundaries.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Pointed out by Arnd Bergmann: PPC32 aligns this at 64bit, IA32 packs
it. A kernel-wide available __compat_u64 which is 4-byte aligned on
AMD64 and IA64 would be nicer though.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Add compat_ioctl. Although all structures are more or less same,
raw1394_iso_packets got pointer inside, and raw1394_cycle_timer got unwanted
padding in the middle. I did not add any translation for ioctls passing array
of integers around as integers seem to have same size (32 bits) on all
architectures supported by Linux.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
* write(fd, buf, 52) from 32bit app was returning 56. Most of callers did not
care, but some (arm registration) did, and anyway it looks bad if request for
writing 52 bytes returns 56. And returning sizeof anything in 'int' is not
good as well. So all functions now return '0' instead of
sizeof(struct raw1394_request) on success, and write() itself provides correct
return value (it just returns value it was asked to write on success as raw1394
does not do any partial writes at all).
* Related to this was problem that write() could have returned 0 when kernel
state would become corrupted and moved to different state than
opened/initialized/connected. Now it returns -EBADFD which seemed appropriate.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
read() always failed with -EFAULT. This was happening due to
raw1394_compat_read copying data to wrong location - access_ok always
failed as 'r' is kernel address, not user. Whole function just tried to
copy data from 'r' to 'r', which is not good.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
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>
This updates the DMA whitelist in MIPS specific au1xxx ide
driver to use NULL instead of "ALL" as the wildcard.
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>
