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2011-07-23Blackfin: bf526: restrict reboot workaround to 0.0 siliconMike Frysinger
The bug in the BF526 rom when doing a software reset exists only in older silicon versions, so don't clear SWRST on newer parts. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf54x: fix GPIO resume codeMike Frysinger
Back in commit c03c2a87347b849ec927d, we fixed logic in the non-bf54x GPIO resume code to set the data levels properly before the direction to avoid spurious line glitches. But we missed the bf54x code paths. So add the same fix there. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf538: pull gpio/port logic out of core hibernate pathsMike Frysinger
Re-architect how we save/restore the gpio/port logic that only pertains to bf538/bf539 parts by pulling it out of the core code paths and pushing it out to bf538-specific locations. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: debug-mmrs: generalize pint logicMike Frysinger
Don't bind the code to specific CPU defines. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf54x: tweak MMR pint namesMike Frysinger
The hardware block uses the name "request" rather than "irq", so update the struct accordingly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: pwm: implement linux/pwm.h APIMike Frysinger
For now, this only supports gptimers. Support for dedicated PWM devices as found on newer parts to come. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: make sure percpu section is aligned in XIP buildsSteven Miao
The alignment is normally handled by PERCPU(), but we need to do it ourselves in the XIP build due to the custom layout. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: gptimers: use bfin read/write helpersMike Frysinger
Use proper helper macros for reading/writing the MMRs rather than volatile markings on the struct. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: gptimers: use register structs from common headerMike Frysinger
Now that asm/gptimers.h has the hardware register struct layout, there's no need to duplicate things locally. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: debug-mmrs: use new gptimer_group layout to simplify codeMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: debug-mmrs: prevent macro arg from expandingMike Frysinger
Passing a non-simple expression in as the addr arg could incorrectly apply the pointer cast resulting in misbehavior. Add proper paren. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: exec: remove redundant set_fs(USER_DS)Mathias Krause
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: debug-mmrs: disable PERIPHERAL_MAP for IMDMA channelsMike Frysinger
The documentation for the IMDMA channels appears to be incorrect. These DMA blocks don't actually have PERIPHERAL_MAP MMRs for us to access. Attempts to do so lead to system mmr hardware errors. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: debug-mmrs: fix typo in single dmac setupMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: optimize double fault boot checkingMike Frysinger
This moves the double fault data used at boot time into a single struct which can then easily be addressed with indexed loads rather than having to explicitly load multiple addresses. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: time: replace magic numbers with definesMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-28Blackfin: debug-mmrs: include RSI_PID[4567] MMRsMike Frysinger
The documentation is a little iffy as to whether these are actual MMRs, but reading them on the hardware works, and the previous version of this logic (the SDH) had PID[4567]. So add it for RSI too. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-28Blackfin: debug-mmrs: fix typos with gptimers/mdma/ppiMike Frysinger
This code was mostly developed against a BF54x, so some BF537-specific issues were missed. The PPI block starts at PPI_CONTROL, not PPI_STATUS (which is the reverse of the EPPI block). The MDMA block starts at MDMA_NEXT_DESC_PTR, not MDMA_CONFIG. Seems the sim does not catch misreads here so that'll need to get fixed. The gptimer block is mostly 32bit regs, not 16bit. Use the gptimer struct to figure that out rather than hardcoding it locally. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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>
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