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2011-05-25Blackfin: use new common PERCPU_INPUT defineMike Frysinger
The Blackfin percpu input sections are outdated, so rather than update them, drop them completely and use the new common define. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: work around anomaly 05000480Steven Miao
Anomaly 05000480 on BF537 rev 0.0, 0.1, 0.2: Multiple Simultaneous Urgent DMA Requests May Cause DMA System Instability Suggested Workaround: Program the DMA Traffic Control Period to a non-zero value. This forces the DMA block to group accesses together rather than allow arbitration for each piece of data placed on the internal DMA bus. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: switch /proc/gpio to seq_fileAlexey Dobriyan
->read_proc interface is going away, switch to seq_file. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: convert old cpumask API to new oneKOSAKI Motohiro
old cpu_xxx() APIs is planned to removed later. then, converted. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: don't touch task->cpus_allowed directlyKOSAKI Motohiro
Every callter (except kthread_bind) should use proper set_cpus_allowed_ptr() APIs. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: initial perf_event supportMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: use on-chip reset func with newer partsMike Frysinger
Turns out the documentation is wrong and doing "RAISE 1" does not result in a software reset, only a core reset. So when the on-chip rom has a functioning reset helper, use it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: optimize MMR reads during startup a bitMike Frysinger
Since the value of these MMRs aren't changing, store the value in a local variable and work off of that. This avoids multiple MMR reads which are implicitly forced by the volatile markings. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: bf537: demux port H mask A and emac rx intsMike Frysinger
The BF537 SIC combines the gpio port H mask A interrupts with the emac rx interrupt, so we need to demux this in software. It also combines the gpio port H mask B and the emac tx interrupts, and the watchdog and port F mask B interrupts, but since we don't support mask B yet, just add the defines for now. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: move internal irq prototypes out of global namespaceMike Frysinger
These are only used in a few internal Blackfin places, so move the irq prototypes out of the global header and into the internal irq one. No functional changes other than shuffling locales. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: bf51x/bf52x: fix typo in hysteresis MMR namesMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: SMP: drop unused blackfin_cpudata.idle pointerMike Frysinger
Not sure when we stopped using this field, but nothing in the tree uses this now, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: SMP: fix cpudata cache setupMike Frysinger
After some cache setup reordering changesets, the blackfin_cpudata init was left behind. While cpu0's data was correct, cpu1's data was not. Not that big of a deal as these are only used in the cpuinfo output, but should still be fixed. So move the setup of these fields to the common cache setup function to avoid this happening again in the future. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: clean up /proc/cpuinfo outputMike Frysinger
The smp flush lines are too long and have too many newlines, so scale them back to match the other lines. The %p modifier shows "(null)" for 0, so use %08x instead. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: first pass at debug mmr supportMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-24Merge branch 'for-2.6.40' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Unify input section names percpu: Avoid extra NOP in percpu_cmpxchg16b_double percpu: Cast away printk format warning percpu: Always align percpu output section to PAGE_SIZE Fix up fairly trivial conflict in arch/x86/include/asm/percpu.h as per Tejun
2011-05-19Merge branch 'timers-clocksource-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: convert mips to generic i8253 clocksource clocksource: convert x86 to generic i8253 clocksource clocksource: convert footbridge to generic i8253 clocksource clocksource: add common i8253 PIT clocksource blackfin: convert to clocksource_register_hz mips: convert to clocksource_register_hz/khz sparc: convert to clocksource_register_hz/khz alpha: convert to clocksource_register_hz microblaze: convert to clocksource_register_hz/khz ia64: convert to clocksource_register_hz/khz x86: Convert remaining x86 clocksources to clocksource_register_hz/khz Make clocksource name const
2011-05-14Merge branch 'consolidate-clksrc-i8253' of ↵Thomas Gleixner
master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource Conflicts: arch/ia64/kernel/cyclone.c arch/mips/kernel/i8253.c arch/x86/kernel/i8253.c Reason: Resolve conflicts so further cleanups do not conflict further Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-24PM / Blackfin: Use struct syscore_ops instead of sysdevs for PMRafael J. Wysocki
Convert some Blackfin architecture's code to using struct syscore_ops objects for power management instead of sysdev classes and sysdevs. This simplifies the code and reduces the kernel's memory footprint. It also is necessary for removing sysdevs from the kernel entirely in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13Blackfin: time-ts: ack gptimer sooner to avoid missing short intsMike Frysinger
If the period of a gptimer is fairly low, we might miss an interrupt by acking it too late (we end up acking the new int as well). Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13Blackfin: gptimers: fix thinko when disabling timersMike Frysinger
We only want to clear the run bit for this one timer, not all status bits. So don't read the whole reg and then write all the bits back out. Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: bitops: fix include order after little endian inclusion Blackfin: defconfigs: update after misc devices defaulted to N Blackfin: use more standard pr_fmt in the module loader
2011-03-29bfin: Use proper accessors in traceThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-29bfin: Convert irq namespaceThomas Gleixner
Convert to the new function names. Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org
2011-03-25Blackfin: use more standard pr_fmt in the module loaderJoe Perches
Changed pr_fmt(fmt) to make the format arguments match the format. Changed an argument name in apply_relocate from me to mod so that the pr_err is consistent with the other uses. Added missing '\n' to a format. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-24percpu: Always align percpu output section to PAGE_SIZETejun Heo
Percpu allocator honors alignment request upto PAGE_SIZE and both the percpu addresses in the percpu address space and the translated kernel addresses should be aligned accordingly. The calculation of the former depends on the alignment of percpu output section in the kernel image. The linker script macros PERCPU_VADDR() and PERCPU() are used to define this output section and the latter takes @align parameter. Several architectures are using @align smaller than PAGE_SIZE breaking percpu memory alignment. This patch removes @align parameter from PERCPU(), renames it to PERCPU_SECTION() and makes it always align to PAGE_SIZE. While at it, add PCPU_SETUP_BUG_ON() checks such that alignment problems are reliably detected and remove percpu alignment comment recently added in workqueue.c as the condition would trigger BUG way before reaching there. For um, this patch raises the alignment of percpu area. As the area is in .init, there shouldn't be any noticeable difference. This problem was discovered by David Howells while debugging boot failure on mn10300. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: user-mode-linux-devel@lists.sourceforge.net
2011-03-18Blackfin/ipipe: upgrade to I-pipe mainlinePhilippe Gerum
This patch introduces Blackfin-specific bits to support the current tip of the interrupt pipeline development, mainly: - 2/3-level interrupt maps (sparse IRQs) - generic virq handling - sysinfo v2 format for ipipe_get_sysinfo() Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: use accessor functions in show_interrupts()Thomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: SMP: work around anomaly 05000491Sonic Zhang
In order to safely work around anomaly 05000491, we have to execute IFLUSH from L1 instruction sram. The trouble with multi-core systems is that all L1 sram is visible only to the active core. So we can't just place the functions into L1 and call it directly. We need to setup a jump table and place the entry point in external memory. This will call the right func based on the active core. In the process, convert from the manual relocation of a small bit of code into Core B's L1 to the more general framework we already have in place for loading arbitrary pieces of code into L1. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: SMP: PERCPU section should be PAGE alignedsteven miao
Common code checks the alignment of some of the variables and calls BUG() if they aren't page aligned. Signed-off-by: steven miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: kgdb: drop dead KGDB_THR_PROC_SWAP for SMP systemsSonic Zhang
Common code no longer defines this, so stop using it. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: bf54x: add kconfig for UART2/3 DMA channel assignmentssteven miao
The BF54x lacks dedicated DMA channels for the UART peripherals and need to be muxed between others. So add a kconfig option so people can select which channels the UARTs will use so they can pick between SPORTs and the less commonly used EPPI/PIXC peripherals. Signed-off-by: steven miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-16Merge branch 'for-2.6.39' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support percpu: Generic support for this_cpu_cmpxchg_double() alpha: use L1_CACHE_BYTES for cacheline size in the linker script percpu: align percpu readmostly subsection to cacheline Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the percpu alignment having changed ("x86: Reduce back the alignment of the per-CPU data section")
2011-02-21blackfin: convert to clocksource_register_hzJohn Stultz
This converts the blackfin clocksource to use clocksource_register_hz. CC: Mike Frysinger <vapier@gentoo.org> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <johnstul@us.ibm.com>
2011-01-31blackfin: Switch from do_timer() to xtime_update()Torben Hohn
xtime_update() takes the xtime_lock itself. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: hch@infradead.org Cc: yong.zhang0@gmail.com LKML-Reference: <20110127145931.23248.33917.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-01-25percpu: align percpu readmostly subsection to cachelineTejun Heo
Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
2011-01-10Blackfin: kgdb_test: make sure to initialize num2Vivi Li
We check its value at runtime, so we want to avoid garbage across runs. Signed-off-by: Vivi Li <vivi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: kgdb: disable preempt schedule when running single step in kgdbSonic Zhang
Otherwise, gdb continue operation after a breakpoint is hit may trap into endless breakpoint. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: kgdb: disable interrupt when single stepping in ADEOSSonic Zhang
When ADEOS and kgdb are both enabled, single step in linux kernel may be scheduled to Xenomai core after return from interrupt handlers. This blocks gdb continue operation after a break point is hit. So, disable interrupt when running gdb single step. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: no-mpu: fix masking of small uncached dma regionSonic Zhang
When using an uncached DMA region less than 1 MiB, we try to mask off the whole last 1 MiB for it. Unfortunately, this fails as we forgot to subtract one from the calculated mask, leading to the region still be marked as cacheable. Reported-by: Andrew Rook <andrew.rook@speakerbus.co.uk> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-11-17BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann
The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-29Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdb,ppc: Individual register get/set for ppc kgdbts: prevent re-entry to kgdbts before it unregisters debug_core,x86,blackfin: Clean up hw debug disable API kdb: Fix early debugging crash regression kgdb,arm: fix register dump kdb: fix per_cpu command to remove supress mask kdb: Add kdb kernel module sample
2010-10-29debug_core,x86,blackfin: Clean up hw debug disable APIDongdong Deng
The kgdb_disable_hw_debug() was an architecture specific function for disabling all hardware breakpoints on a per cpu basis when entering the debug core. This patch will remove the weak function kdbg_disable_hw_debug() and change it into a call back which lives with the rest of hw breakpoint call backs in struct kgdb_arch. Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-10-27ptrace: cleanup arch_ptrace() and friends on BlackfinNamhyung Kim
Change signature of get/put_reg() according to the change of arch_ptrace() and remove unnecessary castings. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27ptrace: change signature of arch_ptrace()Namhyung Kim
Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (47 commits) Blackfin: bfin_spi.h: add MMR peripheral layout Blackfin: bfin_ppi.h: start a common PPI/EPPI header Blackfin: bfin_can.h: add missing VERSION/VERSION2 MMRs Blackfin: bf538: add missing SIC_RVECT define Blackfin: bf561: rewrite SICA_xxx to just SIC_xxx Blackfin: bf54x: add missing SIC_RVECT definition Blackfin: H8606: move 8250 irqflags to platform resources Blackfin: glue XIP/ROM kernel kconfigs Blackfin: update sparse flags for latest upstream changes Blackfin: coreb: update ioctl numbers Blackfin: coreb: add gpl module license Blackfin: bf518-ezkit: add ssm2603 codec resources Blackfin: bf51x/bf52x: fix 16/32bit SPORT MMR helpers Blackfin: tll6527m: new board port Blackfin: bf526-ezbrd/bf527-ezkit: add NAND partition for u-boot Blackfin: merge kernel init memory back into main memory region Blackfin: gpio: add peripheral group check Blackfin: dma: bf54x: add missing break for SPORT1 TX IRQ Blackfin: add new cacheflush syscall Blackfin: bf548-ezkit: increase u-boot partition size ...
2010-10-22Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds
* 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: vfs: make no_llseek the default vfs: don't use BKL in default_llseek llseek: automatically add .llseek fop libfs: use generic_file_llseek for simple_attr mac80211: disallow seeks in minstrel debug code lirc: make chardev nonseekable viotape: use noop_llseek raw: use explicit llseek file operations ibmasmfs: use generic_file_llseek spufs: use llseek in all file operations arm/omap: use generic_file_llseek in iommu_debug lkdtm: use generic_file_llseek in debugfs net/wireless: use generic_file_llseek in debugfs drm: use noop_llseek
2010-10-22Blackfin: gpio: add peripheral group checksteven miao
Many Blackfin parts group sets of pins into a single functional unit. This means you cannot use different pins within a group for different peripherals. Our resource conflict checking thus far has been limited to individual pins, so if someone tried to grab a different pin from the same group, it would be allowed while silently changing the other pins in the same group. One common example is the pin set PG12 - PG15 on BF51x parts. They may either be used with SPI0 (1st function), or they may be used with PTP/PWM/AMS3 (3rd function). Ideally, we'd like to use PG12 - PG14 for SPI0 while using PG15 with AMS3, but the hardware does not permit this. In the past, the software would allow the pins to be requested this way, but ultimately things like the Blackfin SPI driver would stop working when the hardware rerouted to a different peripheral. Signed-off-by: steven miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-22Blackfin: add new cacheflush syscallSonic Zhang
Flushing caches sometimes requires anomaly workarounds which require supervisor-only insns. Normally we don't need to flush caches from userspace so this isn't a problem, but when gcc generates trampolines on the stack, we do. So add a new syscall for gcc to use modeled after the mips version. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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