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2009-11-02MIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinityDavid Daney
Since the locks are used from interrupt context we need the irqsave/irqrestore versions of the locking functions. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Set S-cache linesize to 64-bytes for MTI's S-cacheRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: SMTC: Avoid queing multiple reschedule IPIsJaidev Patwardhan
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: GCMP: Avoid accessing registers when they are not presentJaidev Patwardhan
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: GIC: Random fixes and enhancements.Chris Dearman
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: CMP: Fix memory barriers for correct operation of amon_cpu_startChris Dearman
Signed-off-by: Chris Dearman (chris@mips.com) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operandsNigel Stephens
This patch ensures that the sign bit is always updated for NaN operands. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: SPRAM: Clean up support code a littleChris Dearman
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: 1004K: Enable SPRAM support.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4Ralf Baechle
Based on original patch by Chris Dearman <chris@mips.com>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Kconfig: Fix duplicate default value for MIPS_L1_CACHE_SHIFT.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: MTI: Fix accesses to device registers on MIPS boardsChris Dearman
This fixes the remaining problems introduced by f197465384bf7ef1af184c2ed1a4e268911a91e3 (incorrect access length & byteswapping in bigendian mode) Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Fix machine check exception in kmap_coherent()Kevin Cernekee
On an SMP system with cache aliases, the following sequence of events may happen: 1) copy_user_highpage() runs on CPU0, invoking kmap_coherent() to create a temporary mapping in the fixmap region 2) copy_page() starts on CPU0 3) CPU1 sends CPU0 an IPI asking CPU0 to run local_r4k_flush_cache_page() 4) CPU0 takes the interrupt, interrupting copy_page() 5) local_r4k_flush_cache_page() on CPU0 calls kmap_coherent() again 6) The second invocation of kmap_coherent() on CPU0 tries to use the same fixmap virtual address that was being used by copy_user_highpage() 7) CPU0 throws a machine check exception for the TLB address conflict Fixed by creating an extra set of fixmap entries for use in interrupt handlers. This prevents fixmap VA conflicts between copy_user_highpage() running in user context, and local_r4k_flush_cache_page() invoked from an SMP IPI. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: MTX-1: Fix build if CONFIG_PCI is disabled.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: AR7: register watchdog device only if enabled in hw configurationFlorian Fainelli
This patch checks if the watchdog enable bit is set in the DCL register meaning that the hardware watchdog actually works and if so, register the ar7_wdt platform_device. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: BCM63xx: Prepare for watchdog supportFlorian Fainelli
This patch prepares the board code to register a bcm63xx_wdt platform_device that we are going to use in a subsequent patch. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: BCM63xx: Make bcm63xx_uart_register an initfuncFlorian Fainelli
This patch removes the calls to bcm63xx_uart_register in board_bcm963xx.c and make bcm63xx_uart_register an initfunc. Allows us to remove bcm63xx_dev_uart.h which was there to make checkpatch.pl happy. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: AU1000: Fix build failure for db1x00 configured for Au1100 SoCFlorian Fainelli
This patch fixes the following warning, which becomes an error due to -Werror to be turned on: CC arch/mips/alchemy/common/gpiolib-au1000.o cc1: warnings being treated as errors arch/mips/alchemy/common/gpiolib-au1000.c: In function 'au1100_gpio2_to_irq': /home/florian/dev/kernel/linux-queue/arch/mips/include/asm/mach-au1x00/gpio-au1000.h:107: warning: control reaches end of non-void function Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: BCM63xx: Fix soft-reset lockup on BCM6345Florian Fainelli
This patch fixes a lockup on BCM6345 where setting the PLL soft reset bit will also lock the other blocks including UART. Instead of setting only the PLL soft reset bit in the software reset register, set this bit but do not touch the others. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: TXx9: Fix error handling / Fix for noenexisting gpio_remove.Ralf Roesch
Error was introduced by commit 0385d1f3d394c6814be0b165c153fc3fc254469a. Signed-off-by: Ralf Roesch <ralf.roesch@rw-gmbh.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Add IRQF_TIMER flag for timer interruptsWu Zhangjin
As the commit 3ee4c147 shows, we need to "Add IRQF_TIMER flag for timer interrupts", Atsushi Nemoto have reported that some other timer interrupts should be considered, Here it is. Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: 64-bit: Fix o32 lookup_dcookie syscallWu Zhangjin
An o32 aplication passes a 64-bit value in a pair of registers; a 64-bit kernel expects a 64-bit argument in a single register. Signed-off-by: Chen Jie <chenj@lemote.com> Signed-off-by: Hu Hongbing <huhb@lemote.com> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: VPE: Remove stray unlock_kernel.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reported-by: Josip Rodin <joy@entuzijast.net>
2009-11-02MIPS: Add IRQF_TIMER flag for timer interruptsWu Zhangjin
Along the lines of d6c585a4342a2ff627a29f9aea77c5ed4cd76023, add IRQF_TIMER flag for all timer interrupts This ensures that timer interrupts won't be disabled on suspend and not threaded for PREEMPT_RT. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Loongson: Remove redundant local_irq_disable()Wu Zhangjin
That code is executed with irq disabled already, so, remove the redundant local_irq_disable() here. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: IP27: Fix buildRalf Baechle
Broken by 182a85f8a119c789610a9d464f4129ded9f3c107. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Cleanup CONFIG_DEBUG_STACK_USAGE version of alloc_thread_info.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Octeon: Fix compile error in arch/mips/cavium-octeon/smp.cDavid Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Don't write ones to reserved entryhi bits.Ralf Baechle
We've silently been relying on the hardware chopping off excess, reserved ASID bits for no better reason that it saving an instruction. Because we already have: #define cpu_asid(cpu, mm) (cpu_context((cpu), (mm)) & ASID_MASK) in <asm/mmu_context.h>. We can use a cleanup to avoid writing non-zero bits into the reserved entryhi bits. This avoid triggering some debugging assertion in the Cavium simulator. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-02MIPS: Extend COMMAND_LINE_SIZERalf Baechle
Some firmware may pass well over 256 bytes these days. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-10-12net: Introduce recvmmsg socket syscallArnaldo Carvalho de Melo
Meaning receive multiple messages, reducing the number of syscalls and net stack entry/exit operations. Next patches will introduce mechanisms where protocols that want to optimize this operation will provide an unlocked_recvmsg operation. This takes into account comments made by: . Paul Moore: sock_recvmsg is called only for the first datagram, sock_recvmsg_nosec is used for the rest. . Caitlin Bestler: recvmmsg now has a struct timespec timeout, that works in the same fashion as the ppoll one. If the underlying protocol returns a datagram with MSG_OOB set, this will make recvmmsg return right away with as many datagrams (+ the OOB one) it has received so far. . Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen datagrams and then recvmsg returns an error, recvmmsg will return the successfully received datagrams, store the error and return it in the next call. This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg, where we will be able to acquire the lock only at batch start and end, not at every underlying recvmsg call. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-12net: Generalize socket rx gap / receive queue overflow cmsgNeil Horman
Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is reverted Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30MIPS: Avoid spurious make includecheck messageRalf Baechle
arch/mips/include/asm/unaligned.h: linux/unaligned/generic.h is included more than once. Entirely legitimate but just noise. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: VPE: Get rid of BKL.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: VPE: Fix build after the credential changes a while ago.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Excite: Get rid of BKL.Ralf Baechle
It's not obvious what good it was supposed to do here anyway. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Sibyte: Get rid of BKL.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Add PCMCIA & Cardbus support.Maxime Bizon
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: MSP71xx: request_irq() failure ignored in msp_pcibios_config_access()Roel Kluin
Produce an error if request_irq() fails. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: "Ithamar R. Adema" <ithamar.adema@team-embedded.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Decrease size of au1xxx_dbdma_pm_regs[][]Roel Kluin
There are 16 individual channels (NUM_DBDMA_CHANS) to save/restore plus the global ddma block config (the +1). The last register in a channel can be skipped since it's read-only (at offset 0x18). Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask}Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMP: Fix build.Ralf Baechle
commit 48a048fed82a8e5fdd8618574f6d3de1a0d67a50 Author: Rusty Russell <rusty@rustcorp.com.au> Date: Thu Sep 24 09:34:44 2009 -0600 apparently only passed the "looks good" level of QA ;-) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: MIPSxx SC: Avoid destructive invalidation on partial L2 cachelines.Kevin Cernekee
This extends commit a8ca8b64e3fdfec17679cba0ca5ce6e3ffed092d to cover MIPSxx-style board cache code. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Sibyte: Fix compilation error.Mark Mason
Build error introduced by d4f587c67fc39e0030ddd718675e252e208da4d7. Signed-off-by: Mark Mason <mmason@upwardaccess.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM1480: Re-apply patch lost due to bad resolution of merge conflict.Ralf Baechle
Patch 14275ccdb1e4b487cca745aba994699c426a31ee and d5dedd4507d307eb3f35f21b6e16f336fdc0d82a are conflicting and the conflict was resolved badly in merge 92241940be501f798cb21db344bbb3d1ec3c4f1c resulting in the BCM1480 changes of 14275ccdb1e4b487cca745aba994699c426a31ee getting lost. Sort out the damage. Reported and initial patch by Mark Mason <mmason@upwardaccess.com>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Add serial driver for bcm63xx integrated UART.Maxime Bizon
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Loongson2: Fix typo "enalbe" -> "enable"Uwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Yanhua <yanh@lemote.com> Cc: Robert Richter <robert.richter@amd.com> Acked-by: Wu Zhangjin <wuzj@lemote.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMTC: Remove duplicate structure field initializationJulia Lawall
The definition of the irq_ipi structure has two initializations of the flags field. This combines them. [Ralf: The issue was originally introduced by commit be4894196d79455f420dd7bb78be7dc73bec115c (linux-mips.org) rsp. 033890b084adfa367c544864451d7730552ce8bf (kernel.org). The original intention of the code was to initialize .flags with both flags ored together. The broken C code as actually implemented will be compiled by an equally broken gcc to use only the last initialization, that is IRQF_PERCPU which means this turned into an SMTC bug for 2.6.23 and newer.] The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ identifier I, s, fld; position p0,p; expression E; @@ struct I s =@p0 { ... .fld@p = E, ...}; @s@ identifier I, s, r.fld; position r.p0,p; expression E; @@ struct I s =@p0 { ... .fld@p = E, ...}; @script:python@ p0 << r.p0; fld << r.fld; ps << s.p; pr << r.p; @@ if int(ps[0].line)!=int(pr[0].line) or int(ps[0].column)!=int(pr[0].column): cocci.print_main(fld,p0) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Remove duplicated #includeHuang Weiyi
Remove duplicated #include in arch/mips/kernel/smp.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Remove duplicated #includeHuang Weiyi
Remove duplicated #include in arch/mips/bcm63xx/boards/board_bcm963xx.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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