Commit Graph

35556 Commits

Author SHA1 Message Date
Linus Torvalds 8af03e782c Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (454 commits)
  [POWERPC] Cell IOMMU fixed mapping support
  [POWERPC] Split out the ioid fetching/checking logic
  [POWERPC] Add support to cell_iommu_setup_page_tables() for multiple windows
  [POWERPC] Split out the IOMMU logic from cell_dma_dev_setup()
  [POWERPC] Split cell_iommu_setup_hardware() into two parts
  [POWERPC] Split out the logic that allocates struct iommus
  [POWERPC] Allocate the hash table under 1G on cell
  [POWERPC] Add set_dma_ops() to match get_dma_ops()
  [POWERPC] 83xx: Clean up / convert mpc83xx board DTS files to v1 format.
  [POWERPC] 85xx: Only invalidate TLB0 and TLB1
  [POWERPC] 83xx: Fix typo in mpc837x compatible entries
  [POWERPC] 85xx: convert sbc85* boards to use machine_device_initcall
  [POWERPC] 83xx: rework platform Kconfig
  [POWERPC] 85xx: rework platform Kconfig
  [POWERPC] 86xx: Remove unused IRQ defines
  [POWERPC] QE: Explicitly set address-cells and size cells for muram
  [POWERPC] Convert StorCenter DTS file to /dts-v1/ format.
  [POWERPC] 86xx: Convert all 86xx DTS files to /dts-v1/ format.
  [PPC] Remove 85xx from arch/ppc
  [PPC] Remove 83xx from arch/ppc
  ...
2008-01-31 13:37:27 +11:00
Linus Torvalds 94ed294c20 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (26 commits)
  firewire: fw-sbp2: Use sbp2 device-provided mgt orb timeout for logins
  firewire: fw-sbp2: increase login orb reply timeout, fix "failed to login"
  firewire: replace subtraction with bitwise and
  firewire: fw-core: react on bus resets while the config ROM is being fetched
  firewire: enforce access order between generation and node ID, fix "giving up on config rom"
  firewire: fw-cdev: use device generation, not card generation
  firewire: fw-sbp2: use device generation, not card generation
  firewire: fw-sbp2: try to increase reconnect_hold (speed up reconnection)
  firewire: fw-sbp2: skip unnecessary logout
  firewire vs. ieee1394: clarify MAINTAINERS
  firewire: fw-ohci: Dynamically allocate buffers for DMA descriptors
  firewire: fw-ohci: CycleTooLong interrupt management
  firewire: Fix extraction of source node id
  firewire: fw-ohci: Bug fixes for packet-per-buffer support
  firewire: fw-ohci: Fix for dualbuffer three-or-more buffers
  firewire: fw-sbp2: remove unused misleading macro
  firewire: fw-sbp2: prepare for s/g chaining
  firewire: fw-sbp2: refactor workq and kref handling
  ieee1394: ohci1394: don't schedule IT tasklets on IR events
  ieee1394: sbp2: raise default transfer size limit
  ...
2008-01-31 11:40:18 +11:00
Paul Mackerras bd45ac0c5d Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
Paul Mackerras 4eece4ccf9 Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx 2008-01-31 10:50:17 +11:00
Linus Torvalds 5bdeae46be Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] use SGI_HAS_INDYDOG for INDYDOG depends
2008-01-31 09:36:35 +11:00
Linus Torvalds d145c7253c Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (27 commits)
  lguest: use __PAGE_KERNEL instead of _PAGE_KERNEL
  lguest: Use explicit includes rateher than indirect
  lguest: get rid of lg variable assignments
  lguest: change gpte_addr header
  lguest: move changed bitmap to lg_cpu
  lguest: move last_pages to lg_cpu
  lguest: change last_guest to last_cpu
  lguest: change spte_addr header
  lguest: per-vcpu lguest pgdir management
  lguest: make pending notifications per-vcpu
  lguest: makes special fields be per-vcpu
  lguest: per-vcpu lguest task management
  lguest: replace lguest_arch with lg_cpu_arch.
  lguest: make registers per-vcpu
  lguest: make emulate_insn receive a vcpu struct.
  lguest: map_switcher_in_guest() per-vcpu
  lguest: per-vcpu interrupt processing.
  lguest: per-vcpu lguest timers
  lguest: make hypercalls use the vcpu struct
  lguest: make write() operation smp aware
  ...

Manual conflict resolved (maybe even correctly, who knows) in
drivers/lguest/x86/core.c
2008-01-31 09:35:32 +11:00
Linus Torvalds 3b470ac43f Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
  PPC: Fix powerpc vio_find_name to not use devices_subsys
  Driver core: add bus_find_device_by_name function
  Module: check to see if we have a built in module with the same name
  x86: fix runtime error in arch/x86/kernel/cpu/mcheck/mce_amd_64.c
  Driver core: Fix up build when CONFIG_BLOCK=N
2008-01-31 09:31:37 +11:00
Linus Torvalds 2c57ee6f92 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (249 commits)
  KVM: Move apic timer migration away from critical section
  KVM: Put kvm_para.h include outside __KERNEL__
  KVM: Fix unbounded preemption latency
  KVM: Initialize the mmu caches only after verifying cpu support
  KVM: MMU: Fix dirty page setting for pages removed from rmap
  KVM: Portability: Move kvm_fpu to asm-x86/kvm.h
  KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
  KVM: MMU: Merge shadow level check in FNAME(fetch)
  KVM: MMU: Move kvm_free_some_pages() into critical section
  KVM: MMU: Switch to mmu spinlock
  KVM: MMU: Avoid calling gfn_to_page() in mmu_set_spte()
  KVM: Add kvm_read_guest_atomic()
  KVM: MMU: Concurrent guest walkers
  KVM: Disable vapic support on Intel machines with FlexPriority
  KVM: Accelerated apic support
  KVM: local APIC TPR access reporting facility
  KVM: Print data for unimplemented wrmsr
  KVM: MMU: Add cache miss statistic
  KVM: MMU: Coalesce remote tlb flushes
  KVM: Expose ioapic to ia64 save/restore APIs
  ...
2008-01-31 09:30:10 +11:00
Linus Torvalds 2419505acc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (21 commits)
  [SCSI] Revert "[SCSI] aacraid: fib context lock for management ioctls"
  [SCSI] bsg: copy the cmd_type field to the subordinate request for bidi
  [SCSI] handle scsi_init_queue failure properly
  [SCSI] destroy scsi_bidi_sdb_cache in scsi_exit_queue
  [SCSI] scsi_debug: add XDWRITEREAD_10 support
  [SCSI] scsi_debug: add bidi data transfer support
  [SCSI] scsi_debug: add get_data_transfer_info helper function
  [SCSI] remove use_sg_chaining
  [SCSI] bidirectional: fix up for the new blk_end_request code
  [SCSI] bidirectional command support
  [SCSI] implement scsi_data_buffer
  [SCSI] tgt: use scsi_init_io instead of scsi_alloc_sgtable
  [SCSI] aic7xxx: fix warnings with CONFIG_PM disabled
  [SCSI] aic79xx: fix warnings with CONFIG_PM disabled
  [SCSI] aic7xxx: fix ahc_done check SCB_ACTIVE for tagged transactions
  [SCSI] sgiwd93: use cached memory access to make driver work on IP28
  [SCSI] zfcp: fix sense_buffer access bug
  [SCSI] ncr53c8xx: fix sense_buffer access bug
  [SCSI] aic79xx: fix sense_buffer access bug
  [SCSI] hptiop: fix sense_buffer access bug
  ...
2008-01-31 09:28:49 +11:00
Randy Dunlap a63ca8f65d docbook: fix drivers/base/class warning
Fix kernel-doc empty line warning:
Warning(linux-2.6.24-git8//drivers/base/class.c:866): bad line:

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-31 09:28:20 +11:00
Jarod Wilson 384170da93 firewire: fw-sbp2: Use sbp2 device-provided mgt orb timeout for logins
To be more compliant with section 7.4.8 of the SBP-2 specification,
use the mgt_ORB_timeout specified in the SBP-2 device's config rom
for login ORB attempts (though with some sanity checks). A happy
side-effect is that certain device and controller combinations that
sometimes take more than 20 seconds to get synced up (like my laptop
with just about any SBP-2 device) now function more reliably.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (silenced sparse)
2008-01-30 22:22:29 +01:00
Jarod Wilson a4c379c197 firewire: fw-sbp2: increase login orb reply timeout, fix "failed to login"
Increase (and rename) the login orb reply timeout value to 20s
to match that of the old firewire stack. 2s simply didn't give
many devices enough time to spin up and reply.

Fixes inability to recognize some devices.
Failure mode was "orb reply timed out"/"failed to login".

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (style, comments, changelog)
2008-01-30 22:22:28 +01:00
Jarod Wilson 8f9f963e5d firewire: replace subtraction with bitwise and
Replace an unnecessary subtraction with a bitwise AND when determining the
value of ext_tcode in fw_fill_transaction() to save a cpu cycle or two in a
somewhat critical path.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:28 +01:00
Stefan Richter f8d2dc3938 firewire: fw-core: react on bus resets while the config ROM is being fetched
read_rom() obtained a fresh new fw_device.generation for each read
transaction.  Hence it was able to continue reading in the middle of the
ROM even if a bus reset happened.  However the device may have modified
the ROM during the reset.  We would end up with a corrupt fetched ROM
image then.

Although all of this is quite unlikely, it is not impossible.
Therefore we now restart reading the ROM if the bus generation changed.

Note, the memory barrier in read_rom() is still necessary according to
tests by Jarod Wilson, despite of the ->generation access being moved up
in the call chain.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

This is essentially what I've been beating on locally, and I've yet to hit
another config rom read failure with it.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-01-30 22:22:28 +01:00
Stefan Richter b5d2a5e04e firewire: enforce access order between generation and node ID, fix "giving up on config rom"
fw_device.node_id and fw_device.generation are accessed without mutexes.
We have to ensure that all readers will get to see node_id updates
before generation updates.

Fixes an inability to recognize devices after "giving up on config rom",
https://bugzilla.redhat.com/show_bug.cgi?id=429950

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Reviewed by Nick Piggin <nickpiggin@yahoo.com.au>.

Verified to fix 'giving up on config rom' issues on multiple system and
drive combinations that were previously affected.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
2008-01-30 22:22:27 +01:00
Stefan Richter cf5a56ac80 firewire: fw-cdev: use device generation, not card generation
We have to use the fw_device.generation here, not the fw_card.generation,
because the generation must never be newer than the node ID when we emit
a transaction.  This cannot be guaranteed with fw_card.generation.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Verified in concert with subsequent memory barriers patch to fix 'giving
up on config rom' issues on multiple system and drive combinations that
were previously affected.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-01-30 22:22:27 +01:00
Stefan Richter 5a8a1bcd15 firewire: fw-sbp2: use device generation, not card generation
There was a small window where a login or reconnect job could use an
already updated card generation with an outdated node ID.  We have to
use the fw_device.generation here, not the fw_card.generation, because
the generation must never be newer than the node ID when we emit a
transaction.  This cannot be guaranteed with fw_card.generation.

Furthermore, the target's and initiator's node IDs can be obtained from
fw_device and fw_card.  Dereferencing their underlying topology objects
is not necessary.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Verified in concert with subsequent memory barriers patch to fix 'giving
up on config rom' issues on multiple system and drive combinations that
were previously affected.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-01-30 22:22:26 +01:00
Stefan Richter 14dc992aa7 firewire: fw-sbp2: try to increase reconnect_hold (speed up reconnection)
Ask the target to grant 4 seconds instead of the standard and minimum of
1 second window after bus reset for reconnection.  This accelerates
reconnection if there are more than one targets on the bus:  If a login
and inquiry to one target blocks the fw-sbp2 workqueue for more than 1s
after bus reset, we now still can reconnect to the other target.

Before that, fw-sbp2's reconnect attempts would be rejected with "error
status: 0:9" (function rejected), and fw-sbp2 would finally re-login.
All those futile reconnect attemps cost extra time until the target
which needs re-login is ready for I/O again.

The reconnect timeout field in the login ORB doesn't have to be honored
by the target though.  I found that we could get up to
  - allegedly 32768s from an old OXFW911 firmware
  - 256s from LSI bridges
  - 4s from OXUF922 and OXFW912 bridges,
  - 2s from TI bridges,
  - only the standard 1s from Initio and Prolific bridges and from
    Apple OpenFirmware in target mode.

We just try to get 4 seconds which already covers the case of a few
HDDs on the same bus quite nicely.

A minor drawback occurs in the following (rare and impractical) border
case:
  - two initiators are there, initiator 1 holds an exclusive login to
    a target,
  - initiator 1 goes off the bus,
  - target refuses login attempts from initiator 2 until reconnect_hold
    seconds after bus reset.

An alternative approach to the issue at hand would be to parallelize
fw-sbp2's reconnect and login work.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Jarod Wilson <jwilson@redhat.com>
2008-01-30 22:22:26 +01:00
Stefan Richter 4dccd020d7 firewire: fw-sbp2: skip unnecessary logout
Don't attempt to send a logout ORB if the target was already unplugged
or had its link switched off.  If two targets are attached, this
enhances the chance to quickly reconnect to the remaining target when
one target is plugged out.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Jarod Wilson <jwilson@redhat.com>
2008-01-30 22:22:26 +01:00
David Moore fe5ca63430 firewire: fw-ohci: Dynamically allocate buffers for DMA descriptors
Previously, the fw-ohci driver used fixed-length buffers for storing
descriptors for isochronous receive DMA programs.  If an application
(such as libdc1394) generated a DMA program that was too large, fw-ohci
would reach the limit of its fixed-sized buffer and return an error to
userspace.

This patch replaces the fixed-length ring-buffer with a linked-list of
page-sized buffers.  Additional buffers can be dynamically allocated and
appended to the list when necessary.  For a particular context, buffers
are kept around after use and reused as necessary, so there is no
allocation taking place after the DMA program is generated for the first
time.

In addition, the buffers it uses are coherent for DMA so there is no
syncing required before and after writes.  This syncing wasn't properly
done in the previous version of the code.

-

This is the fourth version of my patch that replaces a fixed-length
buffer for DMA descriptors with a dynamically allocated linked-list of
buffers.

As we discovered with the last attempt, new context programs are
sometimes queued from interrupt context, making it unacceptable to call
tasklet_disable() from context_get_descriptors().

This version of the patch uses ohci->lock for all locking needs instead
of tasklet_disable/enable.  There is a new requirement that
context_get_descriptors() be called while holding ohci->lock.  It was
already held for the AT context, so adding the requirement for the iso
context did not seem particularly onerous.  In addition, this has the
side benefit of allowing iso queue to be safely called from concurrent
user-space threads, which previously was not safe.

Signed-off-by: David Moore <dcm@acm.org>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>

-

Fixes the following issues:
  - Isochronous reception stopped prematurely if an application used a
    larger buffer.  (Reproduced with coriander.)
  - Isochronous reception stopped after one or a few frames on VT630x
    in OHCI 1.0 mode.  (Fixes reception in coriander, but dvgrab still
    doesn't work with these chips.)

Patch update: struct member alignment, whitespace nits

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:24 +01:00
Stefan Richter bb9f2206b6 firewire: fw-ohci: CycleTooLong interrupt management
The firewire-ohci driver so far lacked the ability to resume cycle
master duty after that condition happened, as added to ohci1394 in Linux
2.6.18 by commit 57fdb58fa5.  This ports
this patch to fw-ohci.

The "cycle too long" condition has been seen in practice
  - with IIDC cameras if a mode with packets too large for a speed is
    chosen,
  - sporadically when capturing DV on a VIA VT6306 card with ohci1394/
    ieee1394/ raw1394/ dvgrab 2.
    https://bugzilla.redhat.com/show_bug.cgi?id=415841#c7
(This does not fix Fedora bug 415841.)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:24 +01:00
Rabin Vincent 478b233eda firewire: Fix extraction of source node id
Fix extraction of the source node id from the packet header.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:24 +01:00
David Moore bcee893c6c firewire: fw-ohci: Bug fixes for packet-per-buffer support
This patch corrects a number of bugs in the current OHCI 1.0
packet-per-buffer support:

1. Correctly deal with payloads that cross a page boundary.  The
previous version would not split the descriptor at such a boundary,
potentially corrupting unrelated memory.

2. Allow user-space to specify multiple packets per struct
fw_cdev_iso_packet in the same way that dual-buffer allows.  This is
signaled by header_length being a multiple of header_size.  This
multiple determines the number of packets.  The payload size allocated
per packet is determined by dividing the total payload size by the
number of packets.

3. Make sync support work properly for packet-per-buffer.

I have tested this patch with libdc1394 by forcing my OHCI 1.1
controller to use the packet-per-buffer support instead of dual-buffer.

I would greatly appreciate testing by those who have a DV devices and
other types of iso streamers to make sure I didn't cause any
regressions.

Stefan, with this patch, I'm hoping that libdc1394 will work with all
your OHCI 1.0 controllers now.

The one bit of future work that remains for packet-per-buffer support is
the automatic compaction of short payloads that I discussed with
Kristian.

Signed-off-by: David Moore <dcm@acm.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:23 +01:00
David Moore 0642b6577f firewire: fw-ohci: Fix for dualbuffer three-or-more buffers
This patch fixes the problem where different OHCI 1.1 controllers behave
differently when a received iso packet straddles three or more buffers
when using the dual-buffer receive mode.  Two changes are made in order
to handle this situation:

1. The packet sync DMA descriptor is given a non-zero header length and
non-zero payload length.  This is because zero-payload descriptors are
not discussed in the OHCI 1.1 specs and their behavior is thus
undefined.  Instead we use a header size just large enough for a single
header and a payload length of 4 bytes for this first descriptor.

2. As we process received packets in the context's tasklet, read the
packet length out of the headers.  Keep track of the running total of
the packet length as "excess_bytes", so we can ignore any descriptors
where no packet starts or ends.  These descriptors may not have had
their first_res_count or second_res_count fields updated by the
controller so we cannot rely on those values.

The main drawback of this patch is that the excess_bytes value might get
"out of sync" with the packet descriptors if something strange happens
to the DMA program.  I'm not if such a thing could ever happen, but I
appreciate any suggestions in making it more robust.

Also, the packet-per-buffer support may need a similar fix to deal with
issue 1, but I haven't done any work on that yet.

Stefan, I'm hoping that with this patch, all your OHCI 1.1 controllers
will work properly with an unmodified version of libdc1394.

Signed-off-by: David Moore <dcm@acm.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:23 +01:00
Stefan Richter 4b11ea96a0 firewire: fw-sbp2: remove unused misleading macro
SBP2_MAX_SECTORS is nowhere used in fw-sbp2.
It merely got copied over from sbp2 where it played a role in the past.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:22 +01:00
Stefan Richter b7811da2d9 firewire: fw-sbp2: prepare for s/g chaining
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:22 +01:00
Stefan Richter 285838eb22 firewire: fw-sbp2: refactor workq and kref handling
This somewhat reduces the size of firewire-sbp2.ko.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:21 +01:00
Stefan Richter 85c5798b09 ieee1394: ohci1394: don't schedule IT tasklets on IR events
Bug noted by Pieter Palmers:  Isochronous transmit tasklets were
scheduled on isochronous receive events, in addition to the proper
isochronous receive tasklets.

http://marc.info/?l=linux1394-devel&m=119783196222802

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:21 +01:00
Stefan Richter 4e6343a10b ieee1394: sbp2: raise default transfer size limit
This patch speeds up sbp2 a little bit --- but more importantly, it
brings the behavior of sbp2 and fw-sbp2 closer to each other.  Like
fw-sbp2, sbp2 now does not limit the size of single transfers to 255
sectors anymore, unless told so by a blacklist flag or by module load
parameters.

Only very old bridge chips have been known to need the 255 sectors
limit, and we have got one such chip in our hardwired blacklist.  There
certainly is a danger that more bridges need that limit; but I prefer to
have this issue present in both fw-sbp2 and sbp2 rather than just one of
them.

An OXUF922 with 400GB 7200RPM disk on an S400 controller is sped up by
this patch from 22.9 to 23.5 MB/s according to hdparm.  The same effect
could be achieved before by setting a higher max_sectors module
parameter.  On buses which use 1394b beta mode, sbp2 and fw-sbp2 will
now achieve virtually the same bandwidth.  Fw-sbp2 only remains faster
on 1394a buses due to fw-core's gap count optimization.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:21 +01:00
Stefan Richter 3e75b493fb ieee1394: remove unused code
The code has been in "#if 0 - #endif" since Linux 2.6.12.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:20 +01:00
Stefan Richter c7ea990f87 ieee1394: small cleanup after "nopage"
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:20 +01:00
Nick Piggin 61db81214b ieee1394: nopage
Convert ieee1394 from nopage to fault.
Remove redundant vma range checks (correct resource range check is retained).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:19 +01:00
Joe Perches a5c52df8bc ieee1394: Add missing "space"
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:19 +01:00
Stefan Richter 825f1df545 ieee1394: sbp2: s/g list access cosmetics
Replace sg->length by sg_dma_len(sg).  Rename a variable for shorter
line lengths and eliminate some superfluous local variables.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:19 +01:00
Stefan Richter 8c4ac0949f ieee1394: sbp2: prepare for s/g chaining
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30 22:22:18 +01:00
James Bottomley 203a512f09 [SCSI] Revert "[SCSI] aacraid: fib context lock for management ioctls"
This reverts commit a119ee8ee3.

Adaptec found this was causing system lockups.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:26 -06:00
FUJITA Tomonori 3d9dd6eef8 [SCSI] handle scsi_init_queue failure properly
scsi_init_queue is expected to clean up allocated things when it
fails.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:25 -06:00
FUJITA Tomonori b172b6e99e [SCSI] destroy scsi_bidi_sdb_cache in scsi_exit_queue
Needs to call kmem_cache_destroy for scsi_bidi_sdb_cache in
scsi_exit_queue.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:25 -06:00
FUJITA Tomonori c639d14e2f [SCSI] scsi_debug: add XDWRITEREAD_10 support
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:25 -06:00
FUJITA Tomonori 072d0bb3ce [SCSI] scsi_debug: add bidi data transfer support
This enables fill_from_dev_buffer and fetch_to_dev_buffer to handle
bidi commands.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:24 -06:00
FUJITA Tomonori 3de9f94479 [SCSI] scsi_debug: add get_data_transfer_info helper function
This adds get_data_transfer_info helper function that get lha and
sectors for READ_* and WRITE_* commands (and XDWRITEREAD_10 later).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:24 -06:00
James Bottomley d3f46f39b7 [SCSI] remove use_sg_chaining
With the sg table code, every SCSI driver is now either chain capable
or broken (or has sg_tablesize set so chaining is never activated), so
there's no need to have a check in the host template.

Also tidy up the code by moving the scatterlist size defines into the
SCSI includes and permit the last entry of the scatterlist pools not
to be a power of two.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:14:02 -06:00
Kiyoshi Ueda b8de163184 [SCSI] bidirectional: fix up for the new blk_end_request code
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:41 -06:00
Boaz Harrosh 6f9a35e2da [SCSI] bidirectional command support
At the block level bidi request uses req->next_rq pointer for a second
bidi_read request.
At Scsi-midlayer a second scsi_data_buffer structure is used for the
bidi_read part. This bidi scsi_data_buffer is put on
request->next_rq->special. Struct scsi_cmnd is not changed.

- Define scsi_bidi_cmnd() to return true if it is a bidi request and a
  second sgtable was allocated.

- Define scsi_in()/scsi_out() to return the in or out scsi_data_buffer
  from this command This API is to isolate users from the mechanics of
  bidi.

- Define scsi_end_bidi_request() to do what scsi_end_request() does but
  for a bidi request. This is necessary because bidi commands are a bit
  tricky here. (See comments in body)

- scsi_release_buffers() will also release the bidi_read scsi_data_buffer

- scsi_io_completion() on bidi commands will now call
  scsi_end_bidi_request() and return.

- The previous work done in scsi_init_io() is now done in a new
  scsi_init_sgtable() (which is 99% identical to old scsi_init_io())
  The new scsi_init_io() will call the above twice if needed also for
  the bidi_read command. Only at this point is a command bidi.

- In scsi_error.c at scsi_eh_prep/restore_cmnd() make sure bidi-lld is not
  confused by a get-sense command that looks like bidi. This is done
  by puting NULL at request->next_rq, and restoring.

[jejb: update to sg_table and resolve conflicts
also update to blk-end-request and resolve conflicts]

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:41 -06:00
Boaz Harrosh 30b0c37b27 [SCSI] implement scsi_data_buffer
In preparation for bidi we abstract all IO members of scsi_cmnd,
that will need to duplicate, into a substructure.

- Group all IO members of scsi_cmnd into a scsi_data_buffer
  structure.
- Adjust accessors to new members.
- scsi_{alloc,free}_sgtable receive a scsi_data_buffer instead of
  scsi_cmnd. And work on it.
- Adjust scsi_init_io() and  scsi_release_buffers() for above
  change.
- Fix other parts of scsi_lib/scsi.c to members migration. Use
  accessors where appropriate.

- fix Documentation about scsi_cmnd in scsi_host.h

- scsi_error.c
  * Changed needed members of struct scsi_eh_save.
  * Careful considerations in scsi_eh_prep/restore_cmnd.

- sd.c and sr.c
  * sd and sr would adjust IO size to align on device's block
    size so code needs to change once we move to scsi_data_buff
    implementation.
  * Convert code to use scsi_for_each_sg
  * Use data accessors where appropriate.

- tgt: convert libsrp to use scsi_data_buffer

- isd200: This driver still bangs on scsi_cmnd IO members,
  so need changing

[jejb: rebased on top of sg_table patches fixed up conflicts
and used the synergy to eliminate use_sg and sg_count]

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:40 -06:00
Boaz Harrosh bb52d82f45 [SCSI] tgt: use scsi_init_io instead of scsi_alloc_sgtable
If we export scsi_init_io()/scsi_release_buffers() instead of
scsi_{alloc,free}_sgtable() from scsi_lib than tgt code is much more
insulated from scsi_lib changes. As a bonus it will also gain bidi
capability when it comes.

[jejb: rebase on to sg_table and fix up rejections]

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:40 -06:00
FUJITA Tomonori 03e7925d07 [SCSI] aic7xxx: fix warnings with CONFIG_PM disabled
CC [M]  drivers/scsi/aic7xxx/aic7xxx_osm_pci.o
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:148: warning: 'ahc_linux_pci_dev_suspend' defined but not used
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:166: warning: 'ahc_linux_pci_dev_resume' defined but not used

This moves aic7xxx_pci_driver struct, removes some forward declarations,
and adds some ifdef CONFIG_PM.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:40 -06:00
FUJITA Tomonori 67eb63364e [SCSI] aic79xx: fix warnings with CONFIG_PM disabled
CC [M]  drivers/scsi/aic7xxx/aic79xx_osm_pci.o
drivers/scsi/aic7xxx/aic79xx_osm_pci.c:101: warning: 'ahd_linux_pci_dev_suspend' defined but not used
drivers/scsi/aic7xxx/aic79xx_osm_pci.c:121: warning: 'ahd_linux_pci_dev_resume' defined but not used

This moves aic79xx_pci_driver struct, removes some forward
declarations, and adds some ifdef CONFIG_PM.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:40 -06:00
David Milburn 969ceffb66 [SCSI] aic7xxx: fix ahc_done check SCB_ACTIVE for tagged transactions
The driver only needs to check the SCB_ACTIVE flag if the SCB is not
in the untagged queue.

If the driver is in error recovery, you may end panic'ing on a TUR
that is in the untagged queue.

Attempting to queue an ABORT message
CDB: 0x0 0x0 0x0 0x0 0x0 0x0
SCB 3 done'd twice

This patch is included in Adaptec's 6.3.11 driver on their website.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:39 -06:00
Thomas Bogendoerfer 2adbfa333a [SCSI] sgiwd93: use cached memory access to make driver work on IP28
SGI IP28 machines would need special treatment (enable adding addtional
wait states) when accessing memory uncached. To avoid this pain I
changed the driver to use only cached access to memory.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:39 -06:00