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2007-07-14[NETFILTER]: Lower *tables printk severityPatrick McHardy
Lower ip6tables, arptables and ebtables printk severity similar to Dan Aloni's patch for iptables. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NETFILTER]: nf_conntrack: Don't track locally generated special ICMP errorYasuyuki Kozakai
The conntrack assigned to locally generated ICMP error is usually the one assigned to the original packet which has caused the error. But if the original packet is handled as invalid by nf_conntrack, no conntrack is assigned to the original packet. Then nf_ct_attach() cannot assign any conntrack to the ICMP error packet. In that case the current nf_conntrack_icmp assigns appropriate conntrack to it. But the current code mistakes the direction of the packet. As a result, NAT code mistakes the address to be mangled. To fix the bug, this changes nf_conntrack_icmp not to assign conntrack to such ICMP error. Actually no address is necessary to be mangled in this case. Spotted by Jordan Russell. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NETFILTER]: nf_conntrack: Introduces nf_ct_get_tuplepr and uses itYasuyuki Kozakai
nf_ct_get_tuple() requires the offset to transport header and that bothers callers such as icmp[v6] l4proto modules. This introduces new function to simplify them. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NETFILTER]: nf_conntrack: make l3proto->prepare() generic and renames itYasuyuki Kozakai
The icmp[v6] l4proto modules parse headers in ICMP[v6] error to get tuple. But they have to find the offset to transport protocol header before that. Their processings are almost same as prepare() of l3proto modules. This makes prepare() more generic to simplify icmp[v6] l4proto module later. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NETFILTER]: nf_conntrack: Increment error count on parsing IPv4 headerYasuyuki Kozakai
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NET]: Add ethtool support for NETIF_F_IPV6_CSUM devices.Michael Chan
Add ethtool utility function to set or clear IPV6_CSUM feature flag. Modify tg3.c and bnx2.c to use this function when doing ethtool -K to change tx checksum. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[AF_IUCV]: Add lock when updating accept_qUrsula Braun
The accept_queue of an af_iucv socket will be corrupted, if adding and deleting of entries in this queue occurs at the same time (connect request from one client, while accept call is processed for another client). Solution: add locking when updating accept_q Signed-off-by: Ursula Braun <braunu@de.ibm.com> Acked-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[AF_IUCV]: Avoid deadlock between iucv_path_connect and tasklet.Ursula Braun
An iucv deadlock may occur, where one CPU is spinning on the iucv_table_lock for iucv_tasklet_fn(), while another CPU is holding the iucv_table_lock for an iucv_path_connect() and is waiting for the first CPU in an smp_call_function. Solution: replace spin_lock in iucv_tasklet_fn by spin_trylock and reschedule tasklet in case of non-granted lock. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Acked-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[AF_IUCV]: Improve description of IUCV and AFIUCV configuration options.Jennifer Hunt
Signed-off-by: Jennifer Hunt <jenhunt@us.ibm.com> Signed-off-by: Ursula Braun >braunu@de.ibm.com> Acked-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[INET_SOCK]: make net/ipv4/inet_timewait_sock.c:__inet_twsk_kill() staticAdrian Bunk
This patch makes the needlessly global __inet_twsk_kill() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14Merge branch 'upstream-davem' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6
2007-07-14[TCP]: tcp probe add back ssthresh fieldStephen Hemminger
Sangtae noticed the ssthresh got missed. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[VLAN]: Fix memset lengthPatrick McHardy
Fix sizeof(ETH_ALEN) Introduced by my rtnl_link patches. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NET]: Add macvlan driverPatrick McHardy
Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[VLAN]: Use multicast list synchronization helpersPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[VLAN]: Fix promiscous/allmulti synchronization racesPatrick McHardy
The set_multicast_list function may be called without holding the rtnl mutex, resulting in races when changing the underlying device's promiscous and allmulti state. Use the change_rx_mode hook, which is always invoked under the rtnl. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NET]: dev_mcast: add multicast list synchronization helpersPatrick McHardy
The method drivers currently use to synchronize multicast lists is not very pretty: - walk the multicast list - search each entry on a copy of the previous list - if new add to lower device - walk the copy of the previous list - search each entry on the current list - if removed delete from lower device - copy entire list This patch adds a new field to struct dev_addr_list to store the synchronization state and adds two helper functions for synchronization and cleanup. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[NET]: Add net_device change_rx_mode callbackPatrick McHardy
Currently the set_multicast_list (and set_rx_mode) callbacks are responsible for configuring the device according to the IFF_PROMISC, IFF_MULTICAST and IFF_ALLMULTI flags and the mc_list (and uc_list in case of set_rx_mode). These callbacks can be invoked from BH context without the rtnl_mutex by dev_mc_add/dev_mc_delete, which makes reading the device flags and promiscous/allmulti count racy. For real hardware drivers that just commit all changes to the hardware this is not a real problem since the stack guarantees to call them for every change, so at least the final call will not race and commit the correct configuration to the hardware. For software devices that want to synchronize promiscous and multicast state to an underlying device however this can cause corruption of the underlying device's flags or promisc/allmulti counts. When the software device is concurrently put in promiscous or allmulti mode while set_multicast_list is invoked from bottem half context, the device might synchronize the change to the underlying device without holding the rtnl_mutex, which races with concurrent changes to the underlying device. Add a dev->change_rx_flags hook that is invoked when any of the flags that affect rx filtering change (under the rtnl_mutex), which allows drivers to perform synchronization immediately and only synchronize the address lists in set_multicast_list/set_rx_mode. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14[RFKILL]: fix net/rfkill/rfkill-input.c bug on 64-bit systemsIngo Molnar
Subject: [patch] net/input: fix net/rfkill/rfkill-input.c bug on 64-bit systems this recent commit: commit cf4328cd949c2086091c62c5685f1580fe9b55e4 Author: Ivo van Doorn <IvDoorn@gmail.com> Date: Mon May 7 00:34:20 2007 -0700 [NET]: rfkill: add support for input key to control wireless radio added this 64-bit bug: .... unsigned int flags; spin_lock_irqsave(&task->lock, flags); .... irq 'flags' must be unsigned long, not unsigned int. The -rt tree has strict checks about this on 64-bit so this triggered a build failure. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-13Revert "SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for ↵Linus Torvalds
NetLabel" This reverts commit 9faf65fb6ee2b4e08325ba2d69e5ccf0c46453d0. It bit people like Michal Piotrowski: "My system is too secure, I can not login :)" because it changed how CONFIG_NETLABEL worked, and broke older SElinux policies. As a result, quoth James Morris: "Can you please revert this patch? We thought it only affected people running MLS, but it will affect others. Sorry for the hassle." Cc: James Morris <jmorris@namei.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Cc: Paul Moore <paul.moore@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13Merge git://git.linux-nfs.org/pub/linux/nfs-2.6Linus Torvalds
* git://git.linux-nfs.org/pub/linux/nfs-2.6: (122 commits) sunrpc: drop BKL around wrap and unwrap NFSv4: Make sure unlock is really an unlock when cancelling a lock NLM: fix source address of callback to client SUNRPC client: add interface for binding to a local address SUNRPC server: record the destination address of a request SUNRPC: cleanup transport creation argument passing NFSv4: Make the NFS state model work with the nosharedcache mount option NFS: Error when mounting the same filesystem with different options NFS: Add the mount option "nosharecache" NFS: Add support for mounting NFSv4 file systems with string options NFS: Add final pieces to support in-kernel mount option parsing NFS: Introduce generic mount client API NFS: Add enums and match tables for mount option parsing NFS: Improve debugging output in NFS in-kernel mount client NFS: Clean up in-kernel NFS mount NFS: Remake nfsroot_mount as a permanent part of NFS client SUNRPC: Add a convenient default for the hostname when calling rpc_create() SUNRPC: Rename rpcb_getport to be consistent with new rpcb_getport_sync name SUNRPC: Rename rpcb_getport_external routine SUNRPC: Allow rpcbind requests to be interrupted by a signal. ...
2007-07-13nfsd: fix nfsd_vfs_read() splice actor setupJens Axboe
When nfsd was transitioned to use splice instead of sendfile() for data transfers, a line setting the page index was lost. Restore it, so that nfsd is functional when that path is used. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13CFS: Fix missing digit off in wmult tableThomas Gleixner
Roman Zippel noticed another inconsistency of the wmult table. wmult[16] has a missing digit. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Fix typos in powernow-k8 printk's. [CPUFREQ] Restore previously used governor on a hot-replugged CPU [CPUFREQ] bugfix cpufreq in combination with performance governor [CPUFREQ] powernow-k8 compile fix. [CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI [CPUFREQ] Longhaul - Option to disable ACPI C3 support Fixed up arch/i386/kernel/cpu/cpufreq/powernow-k8.c due to revert that got fixed differently in the cpufreq branch. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13Merge branch 'ioat-md-accel-for-linus' of ↵Linus Torvalds
git://lost.foo-projects.org/~dwillia2/git/iop * 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop: (28 commits) ioatdma: add the unisys "i/oat" pci vendor/device id ARM: Add drivers/dma to arch/arm/Kconfig iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver iop13xx: surface the iop13xx adma units to the iop-adma driver dmaengine: driver for the iop32x, iop33x, and iop13xx raid engines md: remove raid5 compute_block and compute_parity5 md: handle_stripe5 - request io processing in raid5_run_ops md: handle_stripe5 - add request/completion logic for async expand ops md: handle_stripe5 - add request/completion logic for async read ops md: handle_stripe5 - add request/completion logic for async check ops md: handle_stripe5 - add request/completion logic for async compute ops md: handle_stripe5 - add request/completion logic for async write ops md: common infrastructure for running operations with raid5_run_ops md: raid5_run_ops - run stripe operations outside sh->lock raid5: replace custom debug PRINTKs with standard pr_debug raid5: refactor handle_stripe5 and handle_stripe6 (v3) async_tx: add the async_tx api xor: make 'xor_blocks' a library routine for use with async_tx dmaengine: make clients responsible for managing channels dmaengine: refactor dmaengine around dma_async_tx_descriptor ...
2007-07-13Merge branch 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds
* 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-block: splice: fix offset mangling with direct splicing (sendfile) security: revalidate rw permissions for sys_splice and sys_vmsplice relay: fixup kerneldoc comment relay: fix bogus cast in subbuf_splice_actor()
2007-07-13Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Workaround for a sparse warning in include/asm-mips/mach-tx4927/ioremap.h [MIPS] Make show_code static and add __user tag [MIPS] Workaround for a sparse warning in include/asm-mips/compat.h [MIPS] Add some __user tags [MIPS] math-emu minor cleanup [MIPS] Kill CONFIG_TX4927BUG_WORKAROUND [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_FB_XPERT98 [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_SRC_CLK [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_USE32K [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1XXX_PSC_SPI [CHAR] Delete leftovers of old Alchemy UART driver
2007-07-13Revert "[CPUFREQ] powernow-k8: clarify number of cores."Linus Torvalds
This reverts commit 904f7a3f042b5c6aa9e53ce83f2c9de5e33170ff. As noted by Peter Anvin: "It causes build failures on i386. Yet another case of unnecessary divergence between i386 and x86-64 I'm afraid..." Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: [PATCH] sched: small topology.h cleanup [PATCH] sched: fix show_task()/show_tasks() output [PATCH] sched: remove stale version info from kernel/sched_debug.c [PATCH] sched: allow larger granularity [PATCH] sched: fix prio_to_wmult[] for nice 1 [ I re-did the commits to get rid of some bogus merge commit that Ingo had. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[PATCH] sched: small topology.h cleanupIngo Molnar
trivial cleanup: LOCAL_DISTANCE and REMOTE_DISTANCE are only used in topology.h and inside an #ifndef section - limit their existence to that #ifndef. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[PATCH] sched: fix show_task()/show_tasks() outputIngo Molnar
fix show_task()/show_tasks() output: - there's no sibling info anymore - the fields were not aligned properly with the description - get rid of the lazy-TLB output: it's been quite some time since we last had a bug there, and when we had a bug it wasnt helped a bit by this debug output. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[PATCH] sched: remove stale version info from kernel/sched_debug.cIngo Molnar
kernel/sched_debug.c referred to CFS -v20, but there's no CFS versioning needed within the upstream kernel. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[PATCH] sched: allow larger granularityIngo Molnar
Allow granularity up to 100 msecs, instead of 10 msecs. (needed on larger boxes) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[PATCH] sched: fix prio_to_wmult[] for nice 1Mike Galbraith
There's a typo in the values in prio_to_wmult[] for nice level 1. While it did not cause bad CPU distribution, but caused more rescheduling between nice-0 and nice-1 tasks than necessary. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-13[MIPS] Workaround for a sparse warning in include/asm-mips/mach-tx4927/ioremap.hAtsushi Nemoto
include2/asm/mach-tx49xx/ioremap.h:39:52: warning: cast truncates bits from constant value (fff000000 becomes ff000000) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Make show_code static and add __user tagAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Workaround for a sparse warning in include/asm-mips/compat.hAtsushi Nemoto
Cast to a __user pointer via "unsigned long" to get rid of this warning: include2/asm/compat.h:135:10: warning: cast adds address space to expression (<asn:1>) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Add some __user tagsAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] math-emu minor cleanupAtsushi Nemoto
Declaring emulpc and contpc as "unsigned long" can get rid of some casts. This also get rid of some sparse warnings. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Kill CONFIG_TX4927BUG_WORKAROUNDAtsushi Nemoto
Kill workarounds for very early chip (perhaps pre-TX4927A). Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_FB_XPERT98Ralf Baechle
Noticed by Robert P. J. Day (rpjday@mindspring.com). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_SRC_CLKRalf Baechle
Noticed by Robert P. J. Day (rpjday@mindspring.com). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_USE32KRalf Baechle
Noticed by Robert P. J. Day (rpjday@mindspring.com). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1XXX_PSC_SPIRalf Baechle
Noticed by Robert P. J. Day (rpjday@mindspring.com). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13[CHAR] Delete leftovers of old Alchemy UART driverRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13ioatdma: add the unisys "i/oat" pci vendor/device idDan Williams
Cc: John Magolan <john.magolan@unisys.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2007-07-13ARM: Add drivers/dma to arch/arm/KconfigDan Williams
Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2007-07-13iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driverDan Williams
Adds the platform device definitions and the architecture specific support routines (i.e. register initialization and descriptor formats) for the iop-adma driver. Changelog: * add support for > 1k zero sum buffer sizes * added dma/aau platform devices to iq80321 and iq80332 setup * fixed the calculation in iop_desc_is_aligned * support xor buffer sizes larger than 16MB * fix places where software descriptors are assumed to be contiguous, only hardware descriptors are contiguous for up to a PAGE_SIZE buffer size * convert to async_tx * add interrupt support * add platform devices for 80219 boards * do not call platform register macros in driver code * remove switch() statements for compatible register offsets/layouts * change over to bitmap based capabilities * remove unnecessary ARM assembly statement * checkpatch.pl fixes * gpl v2 only correction * phys move to dma_async_tx_descriptor Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2007-07-13iop13xx: surface the iop13xx adma units to the iop-adma driverDan Williams
Adds the platform device definitions and the architecture specific support routines (i.e. register initialization and descriptor formats) for the iop-adma driver. Changelog: * added 'descriptor pool size' to the platform data * add base support for buffer sizes larger than 16MB (hw max) * build error fix from Kirill A. Shutemov * rebase for async_tx changes * add interrupt support * do not call platform register macros in driver code * remove unnecessary ARM assembly statement * checkpatch.pl fixes * gpl v2 only correction Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2007-07-13dmaengine: driver for the iop32x, iop33x, and iop13xx raid enginesDan Williams
The Intel(R) IOP series of i/o processors integrate an Xscale core with raid acceleration engines. The capabilities per platform are: iop219: (2) copy engines iop321: (2) copy engines (1) xor and block fill engine iop33x: (2) copy and crc32c engines (1) xor, xor zero sum, pq, pq zero sum, and block fill engine iop34x (iop13xx): (2) copy, crc32c, xor, xor zero sum, and block fill engines (1) copy, crc32c, xor, xor zero sum, pq, pq zero sum, and block fill engine The driver supports the features of the async_tx api: * asynchronous notification of operation completion * implicit (interupt triggered) handling of inter-channel transaction dependencies The driver adapts to the platform it is running by two methods. 1/ #include <asm/arch/adma.h> which defines the hardware specific iop_chan_* and iop_desc_* routines as a series of static inline functions 2/ The private platform data attached to the platform_device defines the capabilities of the channels 20070626: Callbacks are run in a tasklet. Given the recent discussion on LKML about killing tasklets in favor of workqueues I did a quick conversion of the driver. Raid5 resync performance dropped from 50MB/s to 30MB/s, so the tasklet implementation remains until a generic softirq interface is available. Changelog: * fixed a slot allocation bug in do_iop13xx_adma_xor that caused too few slots to be requested eventually leading to data corruption * enabled the slot allocation routine to attempt to free slots before returning -ENOMEM * switched the cleanup routine to solely use the software chain and the status register to determine if a descriptor is complete. This is necessary to support other IOP engines that do not have status writeback capability * make the driver iop generic * modified the allocation routines to understand allocating a group of slots for a single operation * added a null xor initialization operation for the xor only channel on iop3xx * support xor operations on buffers larger than the hardware maximum * split the do_* routines into separate prep, src/dest set, submit stages * added async_tx support (dependent operations initiation at cleanup time) * simplified group handling * added interrupt support (callbacks via tasklets) * brought the pending depth inline with ioat (i.e. 4 descriptors) * drop dma mapping methods, suggested by Chris Leech * don't use inline in C files, Adrian Bunk * remove static tasklet declarations * make iop_adma_alloc_slots easier to read and remove chances for a corrupted descriptor chain * fix locking bug in iop_adma_alloc_chan_resources, Benjamin Herrenschmidt * convert capabilities over to dma_cap_mask_t * fixup sparse warnings * add descriptor flush before iop_chan_enable * checkpatch.pl fixes * gpl v2 only correction * move set_src, set_dest, submit to async_tx methods * move group_list and phys to async_tx Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Dan Williams <dan.j.williams@intel.com>