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2012-03-21blackfin:dma: rename bfin_dma_5xx.c to bfin_dma.cBob Liu
bfin_dma_5xx is not a generic name for all blackfin chips. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-03-21Disintegrate asm/system.h for Blackfin [ver #2]David Howells
Disintegrate asm/system.h for Blackfin. Signed-off-by: David Howells <dhowells@redhat.com> cc: uclinux-dist-devel@blackfin.uclinux.org Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-03-21blackfin: cplb-mpu: fix page mask table overflowBarry Song
page mask table will overflow without xip related macros. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-03-01sched/rt: Use schedule_preempt_disabled()Thomas Gleixner
Coccinelle based conversion. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-24swm5zut3h9c4a6s46x8rws@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-09blackfin: time-ts: rm unused func broadcast_timer_setup()Bob Liu
broadcast_timer_setup() has no user now, drop it. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-01-09bf54x: get mem size: missing break in switchSteven Miao
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-01-09blackfin: smp: cleanup smp codeBob Liu
move idle task point to percpu blackfin_cpudata and add smp_timer_broadcast interface. enable SUPPLE_1_WAKEUP and add BFIN_IPI_TIMER ipi support. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2011-12-11nohz: Remove tick_nohz_idle_enter_norcu() / tick_nohz_idle_exit_norcu()Frederic Weisbecker
Those two APIs were provided to optimize the calls of tick_nohz_idle_enter() and rcu_idle_enter() into a single irq disabled section. This way no interrupt happening in-between would needlessly process any RCU job. Now we are talking about an optimization for which benefits have yet to be measured. Let's start simple and completely decouple idle rcu and dyntick idle logics to simplify. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2011-12-11nohz: Allow rcu extended quiescent state handling seperately from tick stopFrederic Weisbecker
It is assumed that rcu won't be used once we switch to tickless mode and until we restart the tick. However this is not always true, as in x86-64 where we dereference the idle notifiers after the tick is stopped. To prepare for fixing this, add two new APIs: tick_nohz_idle_enter_norcu() and tick_nohz_idle_exit_norcu(). If no use of RCU is made in the idle loop between tick_nohz_enter_idle() and tick_nohz_exit_idle() calls, the arch must instead call the new *_norcu() version such that the arch doesn't need to call rcu_idle_enter() and rcu_idle_exit(). Otherwise the arch must call tick_nohz_enter_idle() and tick_nohz_exit_idle() and also call explicitly: - rcu_idle_enter() after its last use of RCU before the CPU is put to sleep. - rcu_idle_exit() before the first use of RCU after the CPU is woken up. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: David Miller <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Mackerras <paulus@samba.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2011-12-11nohz: Separate out irq exit and idle loop dyntick logicFrederic Weisbecker
The tick_nohz_stop_sched_tick() function, which tries to delay the next timer tick as long as possible, can be called from two places: - From the idle loop to start the dytick idle mode - From interrupt exit if we have interrupted the dyntick idle mode, so that we reprogram the next tick event in case the irq changed some internal state that requires this action. There are only few minor differences between both that are handled by that function, driven by the ts->inidle cpu variable and the inidle parameter. The whole guarantees that we only update the dyntick mode on irq exit if we actually interrupted the dyntick idle mode, and that we enter in RCU extended quiescent state from idle loop entry only. Split this function into: - tick_nohz_idle_enter(), which sets ts->inidle to 1, enters dynticks idle mode unconditionally if it can, and enters into RCU extended quiescent state. - tick_nohz_irq_exit() which only updates the dynticks idle mode when ts->inidle is set (ie: if tick_nohz_idle_enter() has been called). To maintain symmetry, tick_nohz_restart_sched_tick() has been renamed into tick_nohz_idle_exit(). This simplifies the code and micro-optimize the irq exit path (no need for local_irq_save there). This also prepares for the split between dynticks and rcu extended quiescent state logics. We'll need this split to further fix illegal uses of RCU in extended quiescent states in the idle loop. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: David Miller <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Mackerras <paulus@samba.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2011-10-31blackfin: Add export.h to files using EXPORT_SYMBOL/THIS_MODULEPaul Gortmaker
These particular files were just assuming that module.h was somehow in the include paths. Give them the more minimalist header file explicitly. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-26Blackfin: irq: remove IRQF_DISABLEDYong Zhang
This flag is a NOOP and can be removed now. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Acked-by: Bob Liu <lliubbo@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-25Blackfin: kgdb_test: rework code to avoid -O0 usageSonic Zhang
__kfree_rcu() in rcupdate.h bugs when parameter offset is not a constant at compile time. Since we build the kgdb_test module with -O0 and it includes this header file, we hit the bug. So drop the -O0 and mark the one func we need for the test as noinline (so we can set a breakpoint on it and have it be hit). Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-26atomic: use <linux/atomic.h>Arun Sharma
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@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>
2011-07-24modules: make arch's use default loader hooksJonas Bonn
This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by: Jonas Bonn <jonas@southpole.se> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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
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