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* Blackfin: time-ts: ack gptimer sooner to avoid missing short intsMike Frysinger2011-04-131-1/+7
| | | | | | | | 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>
* Blackfin: gptimers: fix thinko when disabling timersMike Frysinger2011-04-131-1/+1
| | | | | | | | 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>
* Fix common misspellingsLucas De Marchi2011-03-312-2/+2
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-03-301-27/+18
|\ | | | | | | | | | | | | | | | | 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
| * Blackfin: use more standard pr_fmt in the module loaderJoe Perches2011-03-251-27/+18
| | | | | | | | | | | | | | | | | | | | 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>
* | bfin: Use proper accessors in traceThomas Gleixner2011-03-291-3/+4
| | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | bfin: Convert irq namespaceThomas Gleixner2011-03-291-1/+1
|/ | | | | | | | 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
* Blackfin/ipipe: upgrade to I-pipe mainlinePhilippe Gerum2011-03-181-45/+39
| | | | | | | | | | | | 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>
* Blackfin: use accessor functions in show_interrupts()Thomas Gleixner2011-03-181-4/+6
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: work around anomaly 05000491Sonic Zhang2011-03-182-0/+38
| | | | | | | | | | | | | | | | 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>
* Blackfin: SMP: PERCPU section should be PAGE alignedsteven miao2011-03-181-1/+1
| | | | | | | | 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>
* Blackfin: kgdb: drop dead KGDB_THR_PROC_SWAP for SMP systemsSonic Zhang2011-03-181-4/+0
| | | | | | | 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>
* Blackfin: bf54x: add kconfig for UART2/3 DMA channel assignmentssteven miao2011-03-181-13/+19
| | | | | | | | | | 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>
* Merge branch 'for-2.6.39' of ↵Linus Torvalds2011-03-161-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | 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")
| * percpu: align percpu readmostly subsection to cachelineTejun Heo2011-01-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | blackfin: Switch from do_timer() to xtime_update()Torben Hohn2011-01-311-4/+2
|/ | | | | | | | | | | | | 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>
* Blackfin: kgdb_test: make sure to initialize num2Vivi Li2011-01-101-0/+4
| | | | | | | 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>
* Blackfin: kgdb: disable preempt schedule when running single step in kgdbSonic Zhang2011-01-101-1/+7
| | | | | | | | 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>
* Blackfin: kgdb: disable interrupt when single stepping in ADEOSSonic Zhang2011-01-101-0/+20
| | | | | | | | | | 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>
* Blackfin: no-mpu: fix masking of small uncached dma regionSonic Zhang2011-01-101-1/+1
| | | | | | | | | | | 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>
* BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann2010-11-171-1/+0
| | | | | | | | | | 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>
* Merge branch 'for_linus' of ↵Linus Torvalds2010-10-291-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | 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
| * debug_core,x86,blackfin: Clean up hw debug disable APIDongdong Deng2010-10-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ptrace: cleanup arch_ptrace() and friends on BlackfinNamhyung Kim2010-10-271-6/+7
| | | | | | | | | | | | | | | | | | | | 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>
* | ptrace: change signature of arch_ptrace()Namhyung Kim2010-10-271-1/+2
|/ | | | | | | | | | | | | | | 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>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-10-224-69/+148
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * Blackfin: gpio: add peripheral group checksteven miao2010-10-221-67/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * Blackfin: add new cacheflush syscallSonic Zhang2010-10-222-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * Blackfin: access_ok: permit L1 stackBarry Song2010-10-221-0/+5
| | | | | | | | | | | | | | | | | | When apps run with their stack in L1, some system calls might be made where a buffer is in the stack as an argument. So make sure the core Blackfin access code does not reject this memory location. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: ptrace: enable access to L1 stacksBarry Song2010-10-221-0/+8
| | | | | | | | | | | | | | | | If an app is placing its stack in L1 scratchpad SRAM, make sure ptrace is granted access to it so that gdb can do its thing. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-221-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * '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
| * llseek: automatically add .llseek fopArnd Bergmann2010-10-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
* | Fix IRQ flag handling namingDavid Howells2010-10-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration, it maps: local_irq_enable() -> raw_local_irq_enable() local_irq_disable() -> raw_local_irq_disable() local_irq_save() -> raw_local_irq_save() ... and under the other configuration, it maps: raw_local_irq_enable() -> local_irq_enable() raw_local_irq_disable() -> local_irq_disable() raw_local_irq_save() -> local_irq_save() ... This is quite confusing. There should be one set of names expected of the arch, and this should be wrapped to give another set of names that are expected by users of this facility. Change this to have the arch provide: flags = arch_local_save_flags() flags = arch_local_irq_save() arch_local_irq_restore(flags) arch_local_irq_disable() arch_local_irq_enable() arch_irqs_disabled_flags(flags) arch_irqs_disabled() arch_safe_halt() Then linux/irqflags.h wraps these to provide: raw_local_save_flags(flags) raw_local_irq_save(flags) raw_local_irq_restore(flags) raw_local_irq_disable() raw_local_irq_enable() raw_irqs_disabled_flags(flags) raw_irqs_disabled() raw_safe_halt() with type checking on the flags 'arguments', and then wraps those to provide: local_save_flags(flags) local_irq_save(flags) local_irq_restore(flags) local_irq_disable() local_irq_enable() irqs_disabled_flags(flags) irqs_disabled() safe_halt() with tracing included if enabled. The arch functions can now all be inline functions rather than some of them having to be macros. Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile] Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze] Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM] Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR] Acked-by: Tony Luck <tony.luck@intel.com> [IA-64] Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R] Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU] Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC] Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC] Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390] Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score] Acked-by: Matt Fleming <matt@console-pimps.org> [SH] Acked-by: David S. Miller <davem@davemloft.net> [Sparc] Acked-by: Chris Zankel <chris@zankel.net> [Xtensa] Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha] Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300] Cc: starvik@axis.com [CRIS] Cc: jesper.nilsson@axis.com [CRIS] Cc: linux-cris-kernel@axis.com
* | Blackfin: Rename IRQ flags handling functionsDavid Howells2010-10-074-76/+76
|/ | | | | | | | | | | | | | | Rename h/w IRQ flags handling functions to be in line with what is expected for the irq renaming patch. This renames local_*_hw() to hard_local_*() using the following perl command: perl -pi -e 's/local_irq_(restore|enable|disable)_hw/hard_local_irq_\1/ or s/local_irq_save_hw([_a-z]*)[(]flags[)]/flags = hard_local_irq_save\1()/' `find arch/blackfin/ -name "*.[ch]"` and then fixing up asm/irqflags.h manually. Additionally, arch/hard_local_save_flags() and arch/hard_local_irq_save() both return the flags rather than passing it through the argument list. Signed-off-by: David Howells <dhowells@redhat.com>
* Make do_execve() take a const filename pointerDavid Howells2010-08-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Mark arguments to certain syscalls as being constDavid Howells2010-08-131-1/+1
| | | | | | | | | | | | | | | | Mark arguments to certain system calls as being const where they should be but aren't. The list includes: (*) The filename arguments of various stat syscalls, execve(), various utimes syscalls and some mount syscalls. (*) The filename arguments of some syscall helpers relating to the above. (*) The buffer argument of various write syscalls. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin: add support for dynamic ftraceMike Frysinger2010-08-063-9/+163
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: portmux: fix peripheral map overflow when requesting pinsMichael Hennerich2010-08-061-1/+1
| | | | | | | | | | | Some processors have groups of pins that aren't an even number of 16. This causes the array size calculation to under count the number of needed entries due to integer truncation. So on the BF51x, while we should have 3 bitmaps (41 / 16), we end up with 2 and pin requests for the 3rd bank end up scribbling over the top of the GPIO IRQ array. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: BF51x/BF52x: support GPIO Hysteresis/Schmitt Trigger optionsMichael Hennerich2010-08-061-0/+7
| | | | | | | | | Newer parts have optional Hysteresis/Schmitt Trigger options to help with dirty signals. So add some kconfig options for tuning this and enable it by default for people. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: gpio/portmux: clean up whitespace corruptionMike Frysinger2010-08-061-2/+2
| | | | | | | Random tabs instead of spaces, mixes of the two, and unicode spaces instead of ascii spaces. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix DMA/cache bug when resuming from suspend to RAMMichael Hennerich2010-08-061-2/+17
| | | | | | | | | | | | The dma_memcpy() function takes care of flushing different caches for us. Normally this is what we want, but when resuming from mem, we don't yet have caches enabled. If these functions happen to be placed into L1 mem (which is what we're trying to relocate), then things aren't going to work. So define a non-cache dma_memcpy() variant to utilize in situations like this. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: gpio: unify & clean up reserved map handlingMike Frysinger2010-08-061-51/+56
| | | | | | | | The duplicated bit banging logic is getting out of hand, so unify the local API to make management a lot easier. This also makes the code a lot easier to follow. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: move MPU anomaly check to common locationMike Frysinger2010-08-061-4/+0
| | | | | | Keep all anomaly/arch checks in one place to keep logic simple. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: use common EXCEPTION_TABLE() in vmlinux.ldsMike Frysinger2010-08-061-6/+1
| | | | | | Rather than do our own thing, use what common code provides. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* ptrace: unify FDPIC implementationsMike Frysinger2010-05-271-24/+9
| | | | | | | | | | | | | | | | The Blackfin/FRV/SuperH guys all have the same exact FDPIC ptrace code in their arch handlers (since they were probably copied & pasted). Since these ptrace interfaces are an arch independent aspect of the FDPIC code, unify them in the common ptrace code so new FDPIC ports don't need to copy and paste this fundamental stuff yet again. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-05-2411-958/+1510
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (30 commits) Blackfin: SMP: fix continuation lines Blackfin: acvilon: fix timeout usage for I2C Blackfin: fix typo in BF537 IRQ comment Blackfin: unify duplicate MEM_MT48LC32M8A2_75 kconfig options Blackfin: set ARCH_KMALLOC_MINALIGN Blackfin: use atomic kmalloc in L1 alloc so it too can be atomic Blackfin: another year of changes (update copyright in boot log) Blackfin: optimize strncpy a bit Blackfin: isram: clean up ITEST_COMMAND macro and improve the selftests Blackfin: move string functions to normal lib/ assembly Blackfin: SIC: cut down on IAR MMR reads a bit Blackfin: bf537-minotaur: fix build errors due to header changes Blackfin: kgdb: pass up the CC register instead of a 0 stub Blackfin: handle HW errors in the new "FAULT" printing code Blackfin: show the whole accumulator in the pseudo DBG insn Blackfin: support all possible registers in the pseudo instructions Blackfin: add support for the DBG (debug output) pseudo insn Blackfin: change the BUG opcode to an unused 16-bit opcode Blackfin: allow NMI watchdog to be used w/RETN as a scratch reg Blackfin: add support for the DBGA (debug assert) pseudo insn ...
| * Blackfin: another year of changes (update copyright in boot log)Mike Frysinger2010-05-221-2/+2
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: move string functions to normal lib/ assemblyRobin Getz2010-05-221-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 'extern inline' doesn't work correctly in the context of the Linux kernel (too many overriding defines), move the string functions to normal lib/ assembly files (like the existing mem funcs). This avoids the forced inline all over the kernel and allows us to place them constantly in L1. This also avoids some module failures when gcc inserts calls to string functions but the kernel build system doesn't fully consult the library archives. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: kgdb: pass up the CC register instead of a 0 stubMike Frysinger2010-05-221-1/+1
| | | | | | | | | | | | | | | | | | While the CC pseudo register can be deduced from the ASTAT register, make sure we set its value correctly instead of always stubbing it out as 0. GDB itself looks at this pseudo register instead of ASTAT, so we have to supply the right value. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: handle HW errors in the new "FAULT" printing codeRobin Getz2010-05-221-0/+9
| | | | | | | | | | Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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