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2008-04-24[Blackfin] arch: Allow AD1836A board to be connected, either to SPORT2 or ↵Bernd Schmidt
SPORT3. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: actually implement get_cycles functionMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: add boot messages to quickly distinguish between MPU/NOMPU ↵Mike Frysinger
settings Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: theres no need to declare ram{end,start,base} in the head.S ↵Mike Frysinger
files theres no need to declare ram{end,start,base} in the head.S files when declaring them with the other memory related variables in setup.c is so much simpler/nicer Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: remove duplicated prototypes for internal cplb structures ↵Mike Frysinger
from the global blackfin header remove duplicated prototypes for internal cplb structures from the global blackfin header as nothing else should be accessing these Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: declare list of peripherals as const since we dont modify ↵Mike Frysinger
the incoming array Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: merge ip0x-specific board changesMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: USB header files are now located under linux/usb/.Peter Korsgaard
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: Resolve the clash issue of UART defines between blackfin ↵Graf Yang
headers and include/linux/serial_reg. Signed-off-by: Graf Yang <graf.yang@analog.com> Cc: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: Apply Bluetechnix vendor patchMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: This allows XIP to work with FD-PIC.Bernd Schmidt
Previously, init failed to do anything meaningful; it turns out that the reason is that FD-PIC has a readonly data section which can be located in the XIP filesystem, and various address checks in the kernel reject such addresses for syscall arguments. Hence, init's execve ("/bin/sh", ...) failed with error code EFAULT. There's room for improvement here: in case people want to have filesystems on flash rather than in main memory, _access_ok should be modified to allow this. This bug fix is also dedicated to Michael Hennerich. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: support the reserved memory region in the MPU codeBernd Schmidt
Pointed-out-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: fix bug - a crash on bootup with CONFIG_MPU on the BF548Bernd Schmidt
The function flush_switched_dcplbs was clearing the CPLB entries covering the process permission bitmasks. This means that the sequence flush_switched_dcplbs (); set_mask_dcplbs(mm->context.page_rwx_mask); has a problem: if kernel code (such as an interrupt) causes a CPLB miss before set_mask_dcplbs completes, the CPLB handler function causes a double fault, with an instantaneous reboot. This bug fix is dedicated to Michael Hennerich, the only person in the world capable of providing working JTAG hardware. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: a rather old performance improvement for the signal ↵Bernd Schmidt
handling code This is a rather old performance improvement for the signal handling code, which was originally only committed on the 2007R1 branch as a workaround for what we suspected to be a hardware bug. There's no point in constructing a sigreturn stub on the stack and flushing caches; we can just make signal handlers return to a known location in the fixed code area. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: finish removing remnants of old BF537_PORT_H option of ↵Mike Frysinger
Blackfin EMAC driver Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: Jeff Garzik <jeff@garzik.org>
2008-04-23[Blackfin] arch: LARGE_ALLOCS was dropped along the way ... bring Blackfin ↵Mike Frysinger
in line Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: we no longer use BFIN_{SINGLE,DUAL}_CORE in our sourceMike Frysinger
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24[Blackfin] arch: boards and machines defconfig updatesBryan Wu
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: __FUNCTION__ is gcc-specific, use __func__Harvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: fix bug - make sure we check the right L1 lengthMeihui Fan
Signed-off-by: Meihui Fan <mhfan@hhcn.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: add support for the rest of the gptimers on the BF54xMeihui Fan
Signed-off-by: Meihui Fan <mhfan@hhcn.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: relocate MAX_SWITCH_{D,I}_CPLBS from the header to the file ↵Mike Frysinger
where it actually gets used. relocate MAX_SWITCH_{D,I}_CPLBS from the header to the file where it actually gets used. this way when we change CONFIG_MEM_SIZE in our kconfig, we only rebuild one or two files rather than a whole bunch that implicitly include cplb.h. this will also remove the ability to clear the swapcount on the fly, but i really dont think that functionality is important. ultimate goal is for CONFIG_MEM_SIZE to go away and calculate this value on the fly based on what u-boot programmed for us. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: MEM_ADD_WIDTH only gets used when reprogramming clocks, so ↵Mike Frysinger
dont bother exposing it in the menu normally Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: update reboot code to match latest info (really just copy ↵Mike Frysinger
from u-boot) Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: fix bug - Make the MPU code aware of the async banks and ↵Bernd Schmidt
the uncached DMA area. Bug: CONFIG_MPU doesn't seem to handle access to ASYNC/IO Memory well http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3912 Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: fix bug - when using trace buffer with CONFIG_MPU enabled.Bernd Schmidt
There were a couple of problems with the way the trace buffer state is saved/restored in assembly. The DEBUG_HWTRACE_SAVE/RESTORE macros save a value to the stack, which is not immediately obvious; the CPLB exception code needed changes to load the correct value of the stack pointer. The other problem is that the SAVE/RESTORE macros weren't pushing and popping the value downwards on the stack, but rather moving it _upwards_, which is of course completely broken. We also need to make sure there's a matching DEBUG_HWTRACE_RESTORE in the error case of the CPLB handler. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23[Blackfin] arch: fix up - CONFIG_BLKFIN_WT was renamed CONFIG_BFIN_WT while ↵Bernd Schmidt
the MPU code was out-of-tree. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: fix bug - grab locks when not atomicRobin Getz
grab locks when not atomic - this fixes the issues sometimes seen when using magic sysrq. Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: fix bug - when we crash, current is not validRobin Getz
Sometimes when we crash, current is not valid, (has been written over), so the existing code causes a invalid read during exception context - which is a unrecoverable double fault. This fixes this. Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: add i2c board info struct and move to new-style i2c interfaceBryan Wu
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: fix up gpio code style -- no functional changesMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: dump the stack before printing out an error otherwise the ↵Mike Frysinger
stack dump is useless as it shows us tracing through printk Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: conditionally enable flash resources since it requests the ↵Mike Frysinger
async memory bank Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: add code to initialize globals declared in linux/bootmem.h: ↵Yi Li
max_pfn, max_low_pfn, min_low_pfn. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: remove NOTES from linker scriptBernd Schmidt
Since r3658 | vapier | 2007-09-12 16:26:11 +0200 (Wed, 12 Sep 2007) | 1 line add more common defines for output sections we've had a new line, NOTES, in our linker script, which causes upstream binutils to complain about "missing phdr". Currently the only other arch that uses NOTES is i386, and the patch which added it also added PHDRS { text PT_LOAD FLAGS(5); /* R_E */ data PT_LOAD FLAGS(7); /* RWE */ note PT_NOTE FLAGS(0); /* ___ */ } and a few other modifications to use ":text" and ":data" to the linker script. It seems that we don't need NOTES at all, so just remove it. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-26[Blackfin] arch: add twi resources to CM_BF537 board as reported by Servaes ↵Mike Frysinger
Joordens Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-07[Blackfin] arch: declare CHECKFLAGS to make sparse output more readableMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-07[Blackfin] arch: add missing __user marking to ss_sp member of signalstack ↵Mike Frysinger
and a few userspace system functions Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-29[Blackfin] arch: turn generic time on by defaultMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-29[Blackfin] arch: add board bluetechnix kernel defconfigs to kernelMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-29[Blackfin] arch: initial generic time and clock sourcesVitja Makarov
This patch enables Hight-Res Timers and tickless kernel Signed-off-by: Vitja Makarov <vitja.makarov@gmail.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-22[IA64] move XP and XPC to drivers/misc/sgi-xpDean Nelson
Move XPC and XPNET from arch/ia64/sn/kernel to drivers/misc/sgi-xp. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-22[IA64] minor irq handler cleanupsJeff Garzik
- remove unused 'irq' argument from pfm_do_interrupt_handler() - remove pointless cast to void* - add KERN_xxx prefix to printk() - remove braces around singleton C statement - in tioce_provider.c, start tioce_dma_consistent() and tioce_error_intr_handler() function declarations in column 0 This change's main purpose is to prepare for the patchset in jgarzik/misc-2.6.git#irq-remove, that explores removal of the never-used 'irq' argument in each interrupt handler. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-22[IA64] simplify notify hooks in mca.cHidetoshi Seto
There are many notify_die() and almost all take same style with ia64_mca_spin(). This patch defines macros and replace them all, to reduce lines and to improve readability. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-22[IA64] do notify DIE_MCA_MONARCH_PROCESS for each monarchsHidetoshi Seto
There are 3 hooks in MCA handler, but this DIE_MCA_MONARCH_PROCESS event does not notified other than for the first monarch. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-22[IA64] disable interrupts on exit of ia64_trace_syscallHidetoshi Seto
While testing with CONFIG_VIRT_CPU_ACCOUNTING=y, I found that I occasionally get very huge system time in some threads. So I dug the issue and finally noticed that it was caused because of an interrupt which interrupt in the following window: > [arch/ia64/kernel/entry.S: (!CONFIG_PREEMPT && CONFIG_VIRT_CPU_ACCOUNTING)] > > ENTRY(ia64_leave_syscall) > : > (pUStk) rsm psr.i > cmp.eq pLvSys,p0=r0,r0 // pLvSys=1: leave from syscall > (pUStk) cmp.eq.unc p6,p0=r0,r0 // p6 <- pUStk > .work_processed_syscall: > adds r2=PT(LOADRS)+16,r12 > (pUStk) mov.m r22=ar.itc // fetch time at leave > adds r18=TI_FLAGS+IA64_TASK_SIZE,r13 > ;; > <<< window: from here >>> > (p6) ld4 r31=[r18] // load current_thread_info()->flags > ld8 r19=[r2],PT(B6)-PT(LOADRS) > adds r3=PT(AR_BSPSTORE)+16,r12 > ;; > mov r16=ar.bsp > ld8 r18=[r2],PT(R9)-PT(B6) > (p6) and r15=TIF_WORK_MASK,r31 // any work other than TIF_SYSCALL_TRACE? > ;; > ld8 r23=[r3],PT(R11)-PT(AR_BSPSTORE) > (p6) cmp4.ne.unc p6,p0=r15, r0 // any special work pending? > (p6) br.cond.spnt .work_pending_syscall > ;; > ld8 r9=[r2],PT(CR_IPSR)-PT(R9) > ld8 r11=[r3],PT(CR_IIP)-PT(R11) > (pNonSys) break 0 // bug check: we shouldn't be here if pNonSys is TRUE! > ;; > invala > <<< window: to here >>> > rsm psr.i | psr.ic // turn off interrupts and interruption collection If pUStk is true, it means we are going to return user mode, hence we fetch ar.itc to get time at leave from system. It seems that it is not possible to interrupt the window if pUStk is true, because interrupts are disabled early. And also disabling interrupt makes sense because it is safe for referring current_thread_info()->flags. However interrupting the window while pUStk is true was possible. The route was: ia64_trace_syscall -> .work_pending_syscall_end -> .work_processed_syscall Only in case entering the window from this route, interrupts are enabled during in the window even if pUStk is true. I suppose interrupts must be disabled here anyway if pUStk is true. I'm not sure but afraid that what kind of bad effect were there, other than crazy system time which I found. FYI, there was a commit 6f6d75825dc49b082906b84537b4df28293c2977 that points out a bug at same point(exit of ia64_trace_syscall) in 2006. It can be said that there was an another bug. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Remove SunOS and Solaris binary support.
2008-04-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial: (24 commits) DOC: A couple corrections and clarifications in USB doc. Generate a slightly more informative error msg for bad HZ fix typo "is" -> "if" in Makefile ext*: spelling fix prefered -> preferred DOCUMENTATION: Use newer DEFINE_SPINLOCK macro in docs. KEYS: Fix the comment to match the file name in rxrpc-type.h. RAID: remove trailing space from printk line DMA engine: typo fixes Remove unused MAX_NODES_SHIFT MAINTAINERS: Clarify access to OCFS2 development mailing list. V4L: Storage class should be before const qualifier (sn9c102) V4L: Storage class should be before const qualifier sonypi: Storage class should be before const qualifier intel_menlow: Storage class should be before const qualifier DVB: Storage class should be before const qualifier arm: Storage class should be before const qualifier ALSA: Storage class should be before const qualifier acpi: Storage class should be before const qualifier firmware_sample_driver.c: fix coding style MAINTAINERS: Add ati_remote2 driver ... Fixed up trivial conflicts in firmware_sample_driver.c
2008-04-21frv: unexport kmap_atomic_to_pageAdrian Bunk
This patch removes the no longer used export of kmap_atomic_to_page. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (42 commits) PCI: Change PCI subsystem MAINTAINER PCI: pci-iommu-iotlb-flushing-speedup PCI: pci_setup_bridge() mustn't be __devinit PCI: pci_bus_size_cardbus() mustn't be __devinit PCI: pci_scan_device() mustn't be __devinit PCI: pci_alloc_child_bus() mustn't be __devinit PCI: replace remaining __FUNCTION__ occurrences PCI: Hotplug: fakephp: Return success, not ENODEV, when bus rescan is triggered PCI: Hotplug: Fix leaks in IBM Hot Plug Controller Driver - ibmphp_init_devno() PCI: clean up resource alignment management PCI: aerdrv_acpi.c: remove unneeded NULL check PCI: Update VIA CX700 quirk PCI: Expose PCI VPD through sysfs PCI: iommu: iotlb flushing PCI: simplify quirk debug output PCI: iova RB tree setup tweak PCI: parisc: use generic pci_enable_resources() PCI: ppc: use generic pci_enable_resources() PCI: powerpc: use generic pci_enable_resources() PCI: ia64: use generic pci_enable_resources() ...
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