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2010-01-07blackfin,kgdb: Do not put PC in gdb_regs into retx.Sonic Zhang1-1/+1
In blackfin, kgdb is running in delayed exception IRQ5 other than in exception IRQ3 directly. Register reti other than retx in pt_regs is the kgdb return address. So, don't put PC in gdb_regs into retx. CC: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Sonic Zhang <sonic.adi@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-01-07blackfin,kgdb,probe_kernel: Cleanup probe_kernel_read/writeJason Wessel1-205/+0
Blackfin needs it own arch specific probe_kernel_read() and probe_kernel_write(). This was moved out of the kgdb code and into the arch/blackfin/maccess.c, because it is a generic kernel api. The arch specific kgdb.c for blackfin was cleaned of all functions which exist in the kgdb core that do the same thing after resolving the probe_kernel_read() and probe_kernel_write(). This also eliminated the need for most of the #include's. CC: Sonic Zhang <sonic.adi@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-16Merge branch 'for-linus' of ↵Linus Torvalds18-274/+474
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: (88 commits) Blackfin: Convert BUG() to use unreachable() Blackfin: define __NR_recvmmsg Blackfin: drop duplicate sched_clock Blackfin: NOMPU: skip DMA ICPLB hole when it is redundant Blackfin: MPU: add missing __init markings Blackfin: add support for TIF_NOTIFY_RESUME Blackfin: kgdb_test: clean up code a bit Blackfin: convert kgdbtest to proc_fops Blackfin: convert cyc2ns() to clocksource_cyc2ns() Blackfin: ip0x: pull in asm/portmux.h for P_xxx defines Blackfin: drop unused ax88180 resources Blackfin: bf537-stamp: add ADF702x network driver resources Blackfin: bf537-stamp: add CAN resources Blackfin: bf537-stamp: add AD5258 i2c address Blackfin: bf537-stamp: add adau1761 i2c address Blackfin: bf537-stamp: add adau1371 i2c address Blackfin: bf537-stamp: add ADP8870 resources Blackfin: bf537-stamp: kill AD714x board-specific Kconfigs Blackfin: bf537-stamp: update ADP5520 resources Blackfin: bf537-stamp: add ADXL346 orientation sensing support ...
2009-12-16Merge branch 'module' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'module' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: modpost: fix segfault with short symbol names module: handle ppc64 relocating kcrctabs when CONFIG_RELOCATABLE=y Kbuild: clear marker out of modpost module: make MODULE_SYMBOL_PREFIX into a CONFIG option ARM: unexport symbols used to implement floating point emulation ARM: use unified discard definition in linker script x86: don't export inline function sparc64: don't export static inline pci_ functions
2009-12-15module: make MODULE_SYMBOL_PREFIX into a CONFIG optionAlan Jenkins1-2/+0
The next commit will require the use of MODULE_SYMBOL_PREFIX in .tmp_exports-asm.S. Currently it is mixed in with C structure definitions in "asm/module.h". Move the definition of this arch option into Kconfig, so it can be easily accessed by any code. This also lets modpost.c use the same definition. Previously modpost relied on a hardcoded list of architectures in mk_elfconfig.c. A build test for blackfin, one of the two MODULE_SYMBOL_PREFIX archs, showed the generated code was unchanged. vmlinux was identical save for build ids, and an apparently randomized suffix on a single "__key" symbol in the kallsyms data). Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: Mike Frysinger <vapier@gentoo.org> (blackfin) CC: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-12-15Blackfin: drop duplicate sched_clockMike Frysinger1-8/+0
The Blackfin sched_clock() func is pretty much a duplicate of the common version, so just punt it. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: NOMPU: skip DMA ICPLB hole when it is redundantMike Frysinger1-5/+6
Normally there is no user-reserved memory after the DMA region which means there is no user-reserved ICPLB coverage. So the DMA hole can be covered by the large hole that is always added to cover up to the async bank. We only need an explicit DMA whole when we also add an explicit mapping for the user-reserved memory. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: MPU: add missing __init markingsMike Frysinger1-1/+1
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: add support for TIF_NOTIFY_RESUMEBarry Song1-0/+18
Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: kgdb_test: clean up code a bitMike Frysinger1-23/+21
- document simple global symbols - convert printk to pr_* - clean up spurious whitespace - use min_t() Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: convert kgdbtest to proc_fopsAlexey Dobriyan1-27/+12
The read_proc and write_proc interfaces are going to be removed in the common kernel code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: convert cyc2ns() to clocksource_cyc2ns()Mike Frysinger1-2/+4
The former no longer exists. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: dma-mapping.h: flesh out missing DMA mapping functionsBarry Song1-37/+17
Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: workaround anomaly 05000310Barry Song1-0/+30
While fetching instructions at the boundary of L1 instruction SRAM, a false External Memory Addressing Error might be triggered. We should ignore this and continue on our way to avoid random crashes. Because hardware errors are not exact in the Blackfin architecture, we need to catch a few more common cases when the code flow changes and the signal is finally delivered. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: drop ptrace() write support for fixed code/bootromMike Frysinger1-13/+0
These regions are either read-only and won't work anyways (bootrom), or we don't want people screwing with them because they're shared between all processes (fixed code). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: MPU: support XIP in async flash memoryBarry Song1-4/+9
The NOMPU code already supported executing in the async banks, so this brings the MPU code in line. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: drop 4KB reserve at end of memoryBarry Song1-5/+0
The point of this small chunk was to avoid anomaly 05000310. This never really seemed to do what it was intended though -- no valid CPLBs exist over the reserved memory, and there is often memory before it anyways (due to the uClinux MTD and/or reserved DMA region). Plus, it doesn't address the L1 instruction case. So drop this chunk as it wastes memory and is affront to humanity. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: support smaller uncached DMA chunks for memory constrained systemsBarry Song1-7/+13
When working with 8 meg systems, forcing a 1 meg DMA chunk heavily cuts into the available resources. So support smaller chunks to better cover needs for these systems. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: finish_atomic_sections: optimize the RTS stepMike Frysinger1-7/+11
No point in returning to userspace just to have it immediately perform the RTS step. We have to update the PC anyways, so do the RTS too. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: kgdb: punt dead codeSonic Zhang1-17/+0
None of these vars/funcs were being used. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: reject NULL callback in set_dma_callback()Mike Frysinger1-11/+10
It makes no sense to call this function with a NULL callback. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: gptimers: use unsigned timer/group idsMike Frysinger1-16/+16
Since we always use these ids as unsigned values, and we have some assert code to make sure they don't exceed a limit, avoid signed issues. Reported-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: don't walk VMAs when oopsingRobin Getz1-0/+9
If we're double faulting, then we have to assume the VMAs are not safe as broken pointers here will prevent full trace output for the double fault. Shouldn't be a big problem though as rarely is a double fault caused by code in userspace. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin/ipipe: prepare status bitops for SMP supportPhilippe Gerum1-0/+67
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Li Yi <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: don't give CPU its own line in traps outputMike Frysinger1-3/+3
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: announce current cpu rev when bootingRobin Getz1-1/+1
User reports rarely include full information, so include this important tidbit up front. It's also good to know at a glance in general. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: convert DMA mutex to an atomic and drop redundant codeMike Frysinger1-21/+10
The DMA channel status field was encoding redundant info wrt the DMA MMR config register, and it was doing an incomplete job of checking all DMA channels (some drivers write directly to the config register). So drop the tristate field in favor of a binary atomic field. This simplifies the code in general, removes the implicit need for sleeping, and forces the suspend code to handle all channels properly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: push down asm/ includes and out of bfin-global.hMike Frysinger1-0/+1
Avoid including unnecessary headers all the time as well as circular includes with core requirements. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: bf538: add support for extended GPIO banksMichael Hennerich1-0/+97
The GPIOs on ports C/D/E on the BF538/BF539 do not behave the same way as the other ports on the part and the same way as all other Blackfin parts. The MMRs are programmed slightly different and they cannot be used to generate interrupts or wakeup a sleeping system. Since these guys don't fit into the existing code, create a simple gpiolib driver for them. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: calculate on-chip lengths at link time rather than run timeMike Frysinger2-35/+32
Since the link sizes never change at runtime, push the calculation out to the linker script to save some useless calculation costs. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: improve async bank access checking (for cross-banks & XIP)Bernd Schmidt1-15/+62
The access_ok() function did not accept ranges within the async banks which made it impossible to do XIP in flash. Fixing that also showed that the current bfin_mem_access_type() code did not work with accesses that spanned async banks (like a file system). So split out and fix the async bank checks so that all these scenarios work as expected. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: convert DMA code to a proper bitmapMichael Hennerich1-7/+8
Rather than using our own data structures that basically boil down to a bitmap, use the standard bitmap functions. Reported-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: add some bounds checking to peripheral_requestBarry Song1-0/+2
The requested peripheral is turned into an index into some state arrays, so make sure the calculated index doesn't exceed the index. This occurs when using bogus pin values or the define headers are screwed up. Now we'll notice right away that something needs fixing instead of trying to track down random memory corruption. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: use common code for cycle->nanosecond conversionYi Li1-22/+4
No point in redefining things that common code already does for us. Also use CYC2NS_SCALE_FACTOR to better reflect reality and for better precision. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: unify sched_clock() handling between clock sourcesYi Li1-10/+33
Currently sched_clock() is only defined when using CYCLES as a clock source. Declare sched_clock() in common code and mark it with notrace to prevent invoking sched_clock() recursively (because ftrace uses sched_clock() to record time). Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15Blackfin: fix gptimer0 clock source compile warningYi Li1-1/+1
Some of the clocksource prototypes were updated, but the gptimer0 func was missed in the process. Not a big issue as the argument is ignored, but we should fix the compile warning anyways. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-14genirq: Convert irq_desc.lock to raw_spinlockThomas Gleixner2-5/+5
Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Ingo Molnar <mingo@elte.hu>
2009-12-11Unify sys_mmap*Al Viro1-33/+0
New helper - sys_mmap_pgoff(); switch syscalls to using it. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-09Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits) tree-wide: fix misspelling of "definition" in comments reiserfs: fix misspelling of "journaled" doc: Fix a typo in slub.txt. inotify: remove superfluous return code check hdlc: spelling fix in find_pvc() comment doc: fix regulator docs cut-and-pasteism mtd: Fix comment in Kconfig doc: Fix IRQ chip docs tree-wide: fix assorted typos all over the place drivers/ata/libata-sff.c: comment spelling fixes fix typos/grammos in Documentation/edac.txt sysctl: add missing comments fs/debugfs/inode.c: fix comment typos sgivwfb: Make use of ARRAY_SIZE. sky2: fix sky2_link_down copy/paste comment error tree-wide: fix typos "couter" -> "counter" tree-wide: fix typos "offest" -> "offset" fix kerneldoc for set_irq_msi() spidev: fix double "of of" in comment comment typo fix: sybsystem -> subsystem ...
2009-12-09Merge branch 'bkl-arch-for-linus' of ↵Linus Torvalds1-5/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'bkl-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mn10300: Remove the BKL from sys_execve m68knommu: Remove the BKL from sys_execve m68k: Remove the BKL from sys_execve h83000: Remove BKL from sys_execve frv: Remove the BKL from sys_execve blackfin: Remove the BKL from sys_execve um: Remove BKL from mmapper um: Remove BKL from random s390: Remove BKL from prng
2009-12-07Merge branch 'for-next' into for-linusJiri Kosina1-1/+1
Conflicts: kernel/irq/chip.c
2009-12-04tree-wide: fix assorted typos all over the placeAndré Goddard Rosa1-1/+1
That is "success", "unknown", "through", "performance", "[re|un]mapping" , "access", "default", "reasonable", "[con]currently", "temperature" , "channel", "[un]used", "application", "example","hierarchy", "therefore" , "[over|under]flow", "contiguous", "threshold", "enough" and others. Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-25Blackfin: fix SMP build error in start_thread()Graf Yang1-1/+1
Commit d5ce528c8e46fa5afb9 (Blackfin: convert irq/process to asm-generic) incorrectly merged the smp and non-smp cases of start_thread() causing the L1 stack to be setup on the SMP port instead of the UP port. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-11-25Blackfin: fix typo in ptrace pokingJie Zhang1-1/+1
Commit c014e15a2f667f9 (Blackfin: convert ptrace to new memory functions) introduced a copy & paste typo in the ptrace poke data/text handling. The access_process_vm() function call was telling it to read instead of write. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-11-25Blackfin: fix cache Kconfig typoAndré Goddard Rosa1-1/+1
The Kconfig option is "BFIN_EXTMEM_WRITETHROUGH", not "..._WRITETROUGH". Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-11-25Blackfin: fix suspend/resume failure with some on-chip ROMsMichael Hennerich1-2/+7
Some Blackfin on-chip ROMs utilize some MDMA channels during the suspend and resume process, but don't clean up after themselves. So manually clear all DMA channels when resuming since no DMA could have been running at this point in time. Now Linux should be able to work regardless of any laziness on the part of the on-chip ROM or boot loader. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-14blackfin: Remove the BKL from sys_execveJohn Kacur1-5/+1
This looks like a cut-and-paste job. For example, compare this function to sys_execve in arch/x86/kernel/process_64.c and it is almost line by line the same, except the one in x86 nolonger has the big kernel lock. All of the functions called between the lock are generic and not specific to blackfin - thus, I believe it is safe to remove the bkl here. Signed-off-by: John Kacur <jkacur@redhat.com> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <alpine.LFD.2.00.0910130007240.3658@localhost.localdomain> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-10-11headers: remove sched.h from interrupt.hAlexey Dobriyan1-0/+1
After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-10-08Blackfin: fix framebuffer mmap bug for nommuThomas Chou1-0/+11
The patch added a special get_unmapped_area for framebuffer which was hooked to the file ops in drivers/video/fbmem.c. This is needed since v2.6.29-rc1 where nommu vma management was updated, and mmap of framebuffer caused kernel BUG panic. You may turn on "Debug the global anon/private NOMMU mapping region tree" config to such message. As Documentation/nommu-mmap.txt said, "To provide shareable character device support, a driver must provide a file->f_op->get_unmapped_area() operation. The mmap() routines will call this to get a proposed address for the mapping." With this change, user space should call mmap for framebuffer using shared map. Or it can try shared map first, then private map if failed. This shared map usage is now consistent between mmu and nommu. The sys_ file may not be a good place for this patch. But there is a similar one for sparc. I tested a similar patch on nios2nommu, though I don't have a blackfin board to test. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07Blackfin: cplbinfo: drop d_path() hacksMike Frysinger1-13/+12
The cplbinfo was using d_path() to figure out which cpu/cplb was being parsed. As Al pointed out, this isn't exactly reliable as it assumes the static VFS path to be unchanged, and it's just poor form. So use the proc_create_data() to properly (and internally) pass the exact cpu/cplb requested to the parser function. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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