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2012-11-28bfin: switch to generic vfork, get rid of pointless wrappersAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-14blackfin: convert kernel_thread() and kernel_execve() to generic onesAl Viro1-55/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-08Blackfin: smp: add smp_mb() to keep coherencySteven Miao1-2/+2
After use generic smp helpers, smp_mb() should be added to keep coherency. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-10-08Blackfin: drop irq enable in init_arch_irq()Steven Miao1-1/+0
Kernel common code will enable irq, drop it in init_arch_irq(). Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-10-08Blackfin: fix wrong place disabled irqSteven Miao1-3/+1
Shouldn't disable irq before send ipi. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-10-08Blackfin: cpufreq: fix dpm_state_tableJames Cosin1-3/+2
This patch fixes an assumption that cclk's initial divisor will always be 1 (or 0 in the register). TSCALE is always initialized on startup with a value of 4 regardless of the inital cclk divisor; so, we can't make the assumption without making lots of other assumptions. The TPERIOD value is set with a value of the current cclk (value / (HZ * TSCALE)) - 1; so, we need to adjust based on this initial frequency and not use cclk's initial divisor for adjusting the tscale. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-09-07blackfin: smp: adapt to generic smp helpersSteven Miao1-157/+66
Replace blackfin ipi message queue with generic smp helper function. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: fix build warningBob Liu1-3/+3
Fix several build warning while using bf609-ezkit_defconfig. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: cpufreq: fix anomaly 05000273Sonic Zhang1-1/+2
Anomaly 05000273 doesn't apply to bf60x. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: Add double fault, hardware error and NMI SEC handlerSonic Zhang1-1/+33
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: sec: Enable sec interrupt source priority configuration.Sonic Zhang1-0/+21
Customize the SEC interrupt priority array in machine ints-priority.c. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: sec: Clean up interrupt initialization code for SEC.Sonic Zhang1-87/+121
Turn SEC related macro CONFIG_BF60x into SEC_GCTL. Move machine specific GPIO_PINT macros to machine gpio header. Split SEC init_arch_irq() and vec_to_irq() from old SIC. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24cleanup: sec and linkport only built on bf60xSteven Miao1-0/+2
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bfin: pint: add pint suspend and resumeSteven Miao1-0/+4
Add pint suspend and resume if defined BFIN_GPIO_PINT. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: pm: add pint suspend and resume supportSteven Miao2-18/+58
save and restore pint sec CTL save and restore pint registers add pint suspend and resume when suspend to mem Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24blackfin: mach-common: ints-priority add irq_set_wakeBob Liu1-1/+5
Add irq_set_wake to bfin_sec_irqchip, drivers like stmmac need it. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24cpufreq: change debug message level to show clock change errorSteven Miao1-1/+1
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bfin: pm: add deepsleep for bf60xSonic Zhang1-7/+0
Add add deepsleep for bf60x. 1. Call DMC init functions to enter and exit DDR self refresh mode. 2. Wait till CGU PLL is locked after wake up and exit DDR self refresh mode. 3. Make asessembly function enter_deepsleep comply with C funtion ABI in order to call other C functions. 4. Switch kernel stack by register EX_SCRATCH_REG. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24irq: set cgu event handle to fasteoi handleSteven Miao1-1/+1
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bfin: reorg clock init steps for bf609Bob Liu1-132/+7
So that user can set the clocks through menuconfig. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-06-01TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is setAl Viro1-2/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-21Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds1-18/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull smp hotplug cleanups from Thomas Gleixner: "This series is merily a cleanup of code copied around in arch/* and not changing any of the real cpu hotplug horrors yet. I wish I'd had something more substantial for 3.5, but I underestimated the lurking horror..." Fix up trivial conflicts in arch/{arm,sparc,x86}/Kconfig and arch/sparc/include/asm/thread_info_32.h * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (79 commits) um: Remove leftover declaration of alloc_task_struct_node() task_allocator: Use config switches instead of magic defines sparc: Use common threadinfo allocator score: Use common threadinfo allocator sh-use-common-threadinfo-allocator mn10300: Use common threadinfo allocator powerpc: Use common threadinfo allocator mips: Use common threadinfo allocator hexagon: Use common threadinfo allocator m32r: Use common threadinfo allocator frv: Use common threadinfo allocator cris: Use common threadinfo allocator x86: Use common threadinfo allocator c6x: Use common threadinfo allocator fork: Provide kmemcache based thread_info allocator tile: Use common threadinfo allocator fork: Provide weak arch_release_[task_struct|thread_info] functions fork: Move thread info gfp flags to header fork: Remove the weak insanity sh: Remove cpu_idle_wait() ...
2012-05-21blackfin: bf60x: pm: Add a debug option to calculate kernel wakeup time.Sonic Zhang2-0/+38
Display the total time when kernel resumes normal from standby or suspend to mem mode. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: add wakeup source selectSteven Miao2-4/+3
Support select the wakeup source for power management on bf60x. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: make clock changeable in kernel menuconfigBob Liu1-3/+150
Add clock changeable support in kernel menuconfig for bf60x. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: remove redundant CONFIG_BF60x macroSonic Zhang1-6/+0
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21Blackfin: delete fork funcMike Frysinger1-1/+1
We don't implement fork() since we are no-mmu, so redirect it to the existing ENOSYS stub rather than adding a custom EINVAL one. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: mach-common: ints-priority: fix compile errorBob Liu1-0/+2
IRQ_PINT4/PINT5 are not defined on !CONFIG_BF60x, this patch fix it. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: fix compiling warningBob Liu1-1/+6
Fix several compiling warning for bf60x. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: add power management supportSteven Miao3-595/+48
Add bf60x cpu pm callbacks and change blackfin pm framework to support bf60x. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: mach-common: add sec support for bf60xSteven Miao1-38/+380
Add system event controller support for bf60x so that interrupt can be handled. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: add clock supportSteven Miao3-2/+68
Add clock support for bf60x. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: add bf60x to current frameworkBob Liu2-3/+2
This patch added bf60x to current blackfin kernel framework. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-04-26blackfin: Use generic idle thread allocationThomas Gleixner1-18/+1
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Mike Frysinger <vapier@gentoo.org> Link: http://lkml.kernel.org/r/20120420124557.717064871@linutronix.de
2012-04-26smp: Add task_struct argument to __cpu_up()Thomas Gleixner1-1/+1
Preparatory patch to make the idle thread allocation for secondary cpus generic. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Richard Weinberger <richard@nod.at> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/20120420124556.964170564@linutronix.de
2012-03-21Blackfin: s/#if CONFIG/#ifdef CONFIG/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-03-21Blackfin: wire up new process_vm syscallsMike Frysinger1-0/+2
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-01-09blackfin: smp: fix msg queue overflow issueSteven Miao1-5/+3
disable preemption when icache flush and use wait mode cross call, hold the msg queue lock while handle cross function call to avoid overflow Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-01-09blackfin: smp: cleanup smp codeBob Liu1-12/+41
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>
2011-10-31blackfin: add module.h to files implicitly expecting to use it.Paul Gortmaker1-0/+1
Its presence was implicit everywhere, but we are aiming to fix that, so call out the users explicitly. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-25Blackfin: SMP: fix scheduling deadlockSteven Miao1-1/+6
Make sure our smp_send_reschedule() implementation matches the scheduler_ipi() callback so that it can kick the idle cpu. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-08-26All Arch: remove linkage for sys_nfsservctl system callNeilBrown1-1/+1
The nfsservctl system call is now gone, so we should remove all linkage for it. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26atomic: use <linux/atomic.h>Arun Sharma1-1/+1
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>
2011-07-23Blackfin: dpmc: optimize SDRAM programming slightlyMike Frysinger1-9/+10
No need to reload these registers constantly since they're always available (we're not making any function calls in between). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: dpmc: don't save/restore scratch registersMike Frysinger1-6/+6
The Blackfin C ABI says we do not need to save/restore R0-R3 and P0-P2 as they are available as scratch registers. So don't bother. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf538: pull gpio/port logic out of core hibernate pathsMike Frysinger1-35/+0
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: dpmc: optimize hibernate/resume pathMike Frysinger1-438/+572
The current save logic used in hibernation is to do a MMR load (base + offset) into a register, and then push that onto the stack. Then when restoring, pop off the stack into a register followed by a MMR store (base + offset). These use plenty of 32bit insns rather than 16bit, are pretty long winded, and full of pipeline bubbles. So, by taking advantage of MMRs that are contiguous, the multi-register push/pop insn, and register abuse, we can shrink this code considerably. When saving, the new logic does a lot of loads into the data and pointer registers before executing a single multi-register push insn. Then when restoring, we do a single multi-register pop insn followed by a lot of stores. Overall, this allows us to cut the insn count by ~30%, the code size by ~45%, and drastically reduce the register hazards that trigger bubbles in the pipeline. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: dpmc: do not save/restore EVT0/EVT1/EVT4 when hibernatingMike Frysinger1-6/+0
EVT0 is for emulation, EVT1 is for reset, and EVT4 is the "global int disable" region. None of these are used by software (or even hardware), so don't bother saving/restoring them when we hibernate since nothing ever uses these in Linux (the only thing they would be useful for is core-memory scratch, but that's just crazy talk). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: dpmc: relocate hibernate helper macrosMike Frysinger1-0/+24
This defines only get used in the hibernate code, so remove them from the global dpmc header as no one else cares. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: dpmc: omit RETE/RETN when hibernatingMike Frysinger1-4/+0
The RETE/RETN registers are only used in emulation(JTAG) and NMI nodes, or as scratch registers, neither of which need to be saved/restored as this code doesn't execute at those core event levels. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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