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* MIPS: traps: Reformat notify_die invocations to 80 columns.Ralf Baechle2013-10-291-10/+14
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Print correct PC in trace dump after NMI exceptionLeonid Yegoshin2013-10-291-2/+11
| | | | | | | | | | | | | | | | | | | An NMI exception delivered from YAMON delivers the PC in ErrorPC instead of EPC. It's also necessary to clear the Status.BEV bit for the page fault exception handler to work properly. [ralf@linux-mips: Let the assembler do the loading of the mask value rather than the convoluted explicit %hi/%lo manual relocation sequence from the original patch.] Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6035/ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/6084/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove bogus BUG_ON()Markos Chandras2013-10-291-1/+0
| | | | | | | | | | | | Checking for n<0 && n>9 makes no sense because it can never be true. Moreover, we can have up to 64 vectored interrupts so BUG_ON(n>9) was wrong anyway. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5909/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Optimize current_cpu_type() for better code.Ralf Baechle2013-09-171-1/+2
| | | | | | | | | | | | | o Move current_cpu_type() to a separate header file o #ifdefing on supported CPU types lets modern GCC know that certain code in callers may be discarded ideally turning current_cpu_type() into a function returning a constant. o Use current_cpu_type() rather than direct access to struct cpuinfo_mips. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5833/
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2013-07-191-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS fixes from Ralf Baechle: "MIPS fixes for 3.11. Half of then is for Netlogic the remainder touches things across arch/mips. Nothing really dramatic and by rc1 standards MIPS will be in fairly good shape with this applied. Tested by building all MIPS defconfigs of which with this pull request four platforms won't build. And yes, it boots also on my favorite test systems" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: kvm: Kconfig: Drop HAVE_KVM dependency from VIRTUALIZATION MIPS: Octeon: Fix DT pruning bug with pip ports MIPS: KVM: Mark KVM_GUEST (T&E KVM) as BROKEN_ON_SMP MIPS: tlbex: fix broken build in v3.11-rc1 MIPS: Netlogic: Add XLP PIC irqdomain MIPS: Netlogic: Fix USB block's coherent DMA mask MIPS: tlbex: Fix typo in r3000 tlb store handler MIPS: BMIPS: Fix thinko to release slave TP from reset MIPS: Delete dead invocation of exception_exit().
| * MIPS: Delete dead invocation of exception_exit().Ralf Baechle2013-07-171-1/+0
| | | | | | | | | | | | | | panic() doesn't return so this call was useless. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reported-by: Alexander Sverdlin <alexander.sverdlin@nsn.com>
* | MIPS: Delete __cpuinit/__CPUINIT usage from MIPS codePaul Gortmaker2013-07-141-6/+6
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 3747069b25e419f6b51395f48127e9812abc3596 upstream. The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) and are flagged as __cpuinit -- so if we remove the __cpuinit from the arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit related content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. Here, we remove all the MIPS __cpuinit from C code and __CPUINIT from asm files. MIPS is interesting in this respect, because there are also uasm users hiding behind their own renamed versions of the __cpuinit macros. [1] https://lkml.org/lkml/2013/5/20/589 [ralf@linux-mips.org: Folded in Paul's followup fix.] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5494/ Patchwork: https://patchwork.linux-mips.org/patch/5495/ Patchwork: https://patchwork.linux-mips.org/patch/5509/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch '3.10-fixes' into mips-for-linux-nextRalf Baechle2013-07-121-2/+0
|\ | | | | | | | | This that should have been fixed but weren't, way to much, intrusive and late.
| * MIPS: Flush TLB handlers directly after writing themJonas Gorski2013-06-251-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When having enabled MIPS_PGD_C0_CONTEXT, trap_init() might call the generated tlbmiss_handler_setup_pgd before it was committed to memory, causing boot failures: trap_init() |- per_cpu_trap_init() | |- TLBMISS_HANDLER_SETUP() | |- tlbmiss_handler_setup_pgd() |- flush_tlb_handlers() To avoid this, move flush_tlb_handlers() into build_tlb_refill_handler() right after they were generated. We can do this as the cache handling is initialized just before creating the tlb handlers. This issue was introduced in 3d8bfdd0307223de678962f1c1907a7cec549136 ("MIPS: Use C0_KScratch (if present) to hold PGD pointer."). Signed-off-by: Jonas Gorski <jogo@openwrt.org> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Jayachandran C <jchandra@broadcom.com> Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/5539/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: microMIPS: Fix improper definition of ISA exception bit.Steven J. Hill2013-07-011-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | The ISA exception bit selects whether exceptions are taken in classic or microMIPS mode. This bit is Config3.ISAOnExc and was improperly defined as bits 16 and 17 instead of just bit 16. A new function was added so that platforms could set this bit when running a kernel compiled with only microMIPS instructions. Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5377/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: Get rid of MIPS I flag and test macros.Ralf Baechle2013-07-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIPS I is the ancestor of all MIPS ISA and architecture variants. Anything ever build in the MIPS empire is either MIPS I or at least contains MIPS I. If it's running Linux, that is. So there is little point in having cpu_has_mips_1 because it will always evaluate as true - though usually only at runtime. Thus there is no point in having the MIPS_CPU_ISA_I ISA flag, so get rid of it. Little complication: traps.c was using a test for a pure MIPS I ISA as a test for an R3000-style cp0. To deal with that, use a check for cpu_has_3kex or cpu_has_4kex instead. cpu_has_3kex is a new macro. At the moment its default implementation is !cpu_has_4kex but this may eventually change if Linux is ever going to support the oddball MIPS processors R6000 and R8000 so users of either of these macros should not make any assumptions. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/5551/
* | MIPS: Allow kernel to use coprocessor 2Jayachandran C2013-06-131-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Kernel threads should be able to use COP2 if the platform needs it. Do not call die_if_kernel() for a coprocessor unusable exception if the exception due to COP2 usage. Instead, the default notifier for COP2 exceptions is updated to call die_if_kernel. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Cc: ddaney.cavm@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/5415/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: Implement HAVE_CONTEXT_TRACKING.Ralf Baechle2013-06-101-14/+60
|/ | | | | | This enables support for CONFIG_NO_HZ_FULL. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Trap exception handling fixesMaciej W. Rozycki2013-05-231-13/+15
| | | | | | | | | | | 2a0b24f56c2492b932f1aed617ae80fb23500d21 broke Trap exception handling in the standard MIPS mode. Additionally the microMIPS-mode trap code mask is wrong, as it's a 4-bit field. Here's a fix. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5309/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Idle: Do address fiddlery in helper functions.Ralf Baechle2013-05-221-4/+3
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Idle: Consolidate all declarations in <asm/idle.h>.Ralf Baechle2013-05-221-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Revert "MIPS: Allow ASID size to be determined at boot time."David Daney2013-05-161-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit d532f3d26716a39dfd4b88d687bd344fbe77e390. The original commit has several problems: 1) Doesn't work with 64-bit kernels. 2) Calls TLBMISS_HANDLER_SETUP() before the code is generated. 3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when only one call is needed. [ralf@linux-mips.org: Also revert the bits of the ASID patch which were hidden in the KVM merge.] Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: "Steven J. Hill" <Steven.Hill@imgtec.com> Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/5242/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2013-05-101-92/+226
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: - More work on DT support for various platforms - Various fixes that were to late to make it straight into 3.9 - Improved platform support, in particular the Netlogic XLR and BCM63xx, and the SEAD3 and Malta eval boards. - Support for several Ralink SOC families. - Complete support for the microMIPS ASE which basically reencodes the existing MIPS32/MIPS64 ISA to use non-constant size instructions. - Some fallout from LTO work which remove old cruft and will generally make the MIPS kernel easier to maintain and resistant to compiler optimization, even in absence of LTO. - KVM support. While MIPS has announced hardware virtualization extensions this KVM extension uses trap and emulate mode for virtualization of MIPS32. More KVM work to add support for VZ hardware virtualizaiton extensions and MIPS64 will probably already be merged for 3.11. Most of this has been sitting in -next for a long time. All defconfigs have been build or run time tested except three for which fixes are being sent by other maintainers. Semantic conflict with kvm updates done as per Ralf * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (118 commits) MIPS: Add new GIC clockevent driver. MIPS: Formatting clean-ups for clocksources. MIPS: Refactor GIC clocksource code. MIPS: Move 'gic_frequency' to common location. MIPS: Move 'gic_present' to common location. MIPS: MIPS16e: Add unaligned access support. MIPS: MIPS16e: Support handling of delay slots. MIPS: MIPS16e: Add instruction formats. MIPS: microMIPS: Optimise 'strnlen' core library function. MIPS: microMIPS: Optimise 'strlen' core library function. MIPS: microMIPS: Optimise 'strncpy' core library function. MIPS: microMIPS: Optimise 'memset' core library function. MIPS: microMIPS: Add configuration option for microMIPS kernel. MIPS: microMIPS: Disable LL/SC and fix linker bug. MIPS: microMIPS: Add vdso support. MIPS: microMIPS: Add unaligned access support. MIPS: microMIPS: Support handling of delay slots. MIPS: microMIPS: Add support for exception handling. MIPS: microMIPS: Floating point support. MIPS: microMIPS: Fix macro naming in micro-assembler. ...
| * Merge branch 'mti-next' of ↵Ralf Baechle2013-05-091-86/+216
| |\ | | | | | | | | | git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next
| | * MIPS: microMIPS: Add support for exception handling.Steven J. Hill2013-05-091-82/+208
| | | | | | | | | | | | | | | | | | | | | | | | | | | All exceptions must be taken in microMIPS mode, never in classic MIPS mode or the kernel falls apart. A few NOP instructions are used to maintain the correct alignment of microMIPS versions of the exception vectors. Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
| | * MIPS: microMIPS: Floating point support.Leonid Yegoshin2013-05-091-1/+1
| | | | | | | | | | | | | | | | | | | | | Add logic needed to do floating point emulation in microMIPS mode. Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Signed-off-by: Steven J. Hill <Steven. Hill@imgtec.com>
| | * MIPS: Allow ASID size to be determined at boot time.Steven J. Hill2013-05-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original patch by Ralf Baechle and removed by Harold Koerfgen with commit f67e4ffc79905482c3b9b8c8dd65197bac7eb508. This allows for more generic kernels since the size of the ASID and corresponding masks can be determined at run-time. This patch is also required for the new Aptiv cores and has been tested on Malta and Malta Aptiv platforms. [ralf@linux-mips.org: Added relevant part of fix https://patchwork.linux-mips.org/patch/5213/] Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Merge branch 'next/kvm' into mips-for-linux-nextRalf Baechle2013-05-091-1/+6
| |\ \
| | * | KVM/MIPS32: KVM Guest kernel support.Sanjay Lal2013-05-081-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both Guest kernel and Guest Userspace execute in UM. The memory map is as follows: Guest User address space: 0x00000000 -> 0x40000000 Guest Kernel Unmapped: 0x40000000 -> 0x60000000 Guest Kernel Mapped: 0x60000000 -> 0x80000000 - Guest Usermode virtual memory is limited to 1GB. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | Merge branch 'mips-next-3.10' of ↵Ralf Baechle2013-05-081-1/+1
| |\ \ \ | | | |/ | | |/| | | | | git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next
| * | | MIPS: Avoid overoptimization by GCC.Ralf Baechle2013-04-111-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this, it's possible that LTO will discard the calls to set_except_vector() in the probe for the DADDI overflow bug resulting in a kernel crash like this: [...] Mount-cache hash table entries: 256 Checking for the daddi bug... Integer overflow[#1]: Cpu 0 $ 0 : 0000000000000000 0000000010008ce1 0000000000000001 0000000000000000 $ 4 : 7fffffffffffedcd ffffffff81410000 0000000000000030 000000000000003f [...] There are other similar places in the kernel so we've just been lucky that GCC's been tolerant. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | MIPS: Make tlb exception handler definitions and declarations match.Ralf Baechle2013-04-111-4/+4
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code was written as it is because it's more expressive, a bit easier. But it's always been dirty, if not a bug. But we can't cheat with LTO compilers, so this results in: [...] LDFINAL vmlinux.o In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:63:49: error: variable ‘handle_tlbl’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1448:5: note: previously declared here In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:62:49: error: variable ‘handle_tlbm’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1450:5: note: previously declared here In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:64:49: error: variable ‘handle_tlbs’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1449:5: note: previously declared here lto1: fatal error: errors during merging of translation units compilation terminated. lto-wrapper: /usr/bin/mips-linux-gcc returned 1 exit status /usr/lib64/gcc/mips-linux/4.7.1/../../../../mips-linux/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make: *** [vmlinux] Error 1 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | dump_stack: unify debug information printed by show_regs()Tejun Heo2013-04-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | show_regs() is inherently arch-dependent but it does make sense to print generic debug information and some archs already do albeit in slightly different forms. This patch introduces a generic function to print debug information from show_regs() so that different archs print out the same information and it's much easier to modify what's printed. show_regs_print_info() prints out the same debug info as dump_stack() does plus task and thread_info pointers. * Archs which didn't print debug info now do. alpha, arc, blackfin, c6x, cris, frv, h8300, hexagon, ia64, m32r, metag, microblaze, mn10300, openrisc, parisc, score, sh64, sparc, um, xtensa * Already prints debug info. Replaced with show_regs_print_info(). The printed information is superset of what used to be there. arm, arm64, avr32, mips, powerpc, sh32, tile, unicore32, x86 * s390 is special in that it used to print arch-specific information along with generic debug info. Heiko and Martin think that the arch-specific extra isn't worth keeping s390 specfic implementation. Converted to use the generic version. Note that now all archs print the debug info before actual register dumps. An example BUG() dump follows. kernel BUG at /work/os/work/kernel/workqueue.c:4841! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #7 Hardware name: empty empty/S3992, BIOS 080011 10/26/2007 task: ffff88007c85e040 ti: ffff88007c860000 task.ti: ffff88007c860000 RIP: 0010:[<ffffffff8234a07e>] [<ffffffff8234a07e>] init_workqueues+0x4/0x6 RSP: 0000:ffff88007c861ec8 EFLAGS: 00010246 RAX: ffff88007c861fd8 RBX: ffffffff824466a8 RCX: 0000000000000001 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffffffff8234a07a RBP: ffff88007c861ec8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8234a07a R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88007dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffff88015f7ff000 CR3: 00000000021f1000 CR4: 00000000000007f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88007c861ef8 ffffffff81000312 ffffffff824466a8 ffff88007c85e650 0000000000000003 0000000000000000 ffff88007c861f38 ffffffff82335e5d ffff88007c862080 ffffffff8223d8c0 ffff88007c862080 ffffffff81c47760 Call Trace: [<ffffffff81000312>] do_one_initcall+0x122/0x170 [<ffffffff82335e5d>] kernel_init_freeable+0x9b/0x1c8 [<ffffffff81c47760>] ? rest_init+0x140/0x140 [<ffffffff81c4776e>] kernel_init+0xe/0xf0 [<ffffffff81c6be9c>] ret_from_fork+0x7c/0xb0 [<ffffffff81c47760>] ? rest_init+0x140/0x140 ... v2: Typo fix in x86-32. v3: CPU number dropped from show_regs_print_info() as dump_stack_print_info() has been updated to print it. s390 specific implementation dropped as requested by s390 maintainers. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> [tile bits] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | dump_stack: consolidate dump_stack() implementations and unify their behaviorsTejun Heo2013-04-301-13/+0
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both dump_stack() and show_stack() are currently implemented by each architecture. show_stack(NULL, NULL) dumps the backtrace for the current task as does dump_stack(). On some archs, dump_stack() prints extra information - pid, utsname and so on - in addition to the backtrace while the two are identical on other archs. The usages in arch-independent code of the two functions indicate show_stack(NULL, NULL) should print out bare backtrace while dump_stack() is used for debugging purposes when something went wrong, so it does make sense to print additional information on the task which triggered dump_stack(). There's no reason to require archs to implement two separate but mostly identical functions. It leads to unnecessary subtle information. This patch expands the dummy fallback dump_stack() implementation in lib/dump_stack.c such that it prints out debug information (taken from x86) and invokes show_stack(NULL, NULL) and drops arch-specific dump_stack() implementations in all archs except blackfin. Blackfin's dump_stack() does something wonky that I don't understand. Debug information can be printed separately by calling dump_stack_print_info() so that arch-specific dump_stack() implementation can still emit the same debug information. This is used in blackfin. This patch brings the following behavior changes. * On some archs, an extra level in backtrace for show_stack() could be printed. This is because the top frame was determined in dump_stack() on those archs while generic dump_stack() can't do that reliably. It can be compensated by inlining dump_stack() but not sure whether that'd be necessary. * Most archs didn't use to print debug info on dump_stack(). They do now. An example WARN dump follows. WARNING: at kernel/workqueue.c:4841 init_workqueues+0x35/0x505() Hardware name: empty Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #9 0000000000000009 ffff88007c861e08 ffffffff81c614dc ffff88007c861e48 ffffffff8108f50f ffffffff82228240 0000000000000040 ffffffff8234a03c 0000000000000000 0000000000000000 0000000000000000 ffff88007c861e58 Call Trace: [<ffffffff81c614dc>] dump_stack+0x19/0x1b [<ffffffff8108f50f>] warn_slowpath_common+0x7f/0xc0 [<ffffffff8108f56a>] warn_slowpath_null+0x1a/0x20 [<ffffffff8234a071>] init_workqueues+0x35/0x505 ... v2: CPU number added to the generic debug info as requested by s390 folks and dropped the s390 specific dump_stack(). This loses %ksp from the debug message which the maintainers think isn't important enough to keep the s390-specific dump_stack() implementation. dump_stack_print_info() is moved to kernel/printk.c from lib/dump_stack.c. Because linkage is per objecct file, dump_stack_print_info() living in the same lib file as generic dump_stack() means that archs which implement custom dump_stack() - at this point, only blackfin - can't use dump_stack_print_info() as that will bring in the generic version of dump_stack() too. v1 The v1 patch broke build on blackfin due to this issue. The build breakage was reported by Fengguang Wu. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390 bits] Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | MIPS: Fix ISA level which causes secondary cache init bypassing and moreDeng-Cheng Zhu2013-04-051-1/+1
|/ | | | | | | | | | | | | | | | | | | The commit a96102be70 introduced set_isa() where compatible ISA info is also set aside from the one gets passed in. It means, for example, 1004K will have MIPS_CPU_ISA_M32R2/M32R1/II/I flags. This leads to things like the following inappropriate: if (c->isa_level == MIPS_CPU_ISA_M32R1 || c->isa_level == MIPS_CPU_ISA_M32R2 || c->isa_level == MIPS_CPU_ISA_M64R1 || c->isa_level == MIPS_CPU_ISA_M64R2) This patch fixes it. Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2013-03-021-16/+16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: o Add basic support for the Mediatek/Ralink Wireless SoC family. o The Qualcomm Atheros platform is extended by support for the new QCA955X SoC series as well as a bunch of patches that get the code ready for OF support. o Lantiq and BCM47XX platform have a few improvements and bug fixes. o MIPS has sent a few patches that get the kernel ready for the upcoming microMIPS support. o The rest of the series is made up of small bug fixes and cleanups that relate to various parts of the MIPS code. The biggy in there is a whitespace cleanup. After I was sent another set of whitespace cleanup patches I decided it was the time to clean the whitespace "issues" for once and and that touches many files below arch/mips/. Fix up silly conflicts, mostly due to whitespace cleanups. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits) MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h MIPS: remove broken conditional inside vpe loader code MIPS: SMTC: fix implicit declaration of set_vi_handler MIPS: early_printk: drop __init annotations MIPS: Probe for and report hardware virtualization support. MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board MIPS: ath79: add USB controller registration code for the QCA955X SoCs MIPS: ath79: add PCI controller registration code for the QCA955X SoCs MIPS: ath79: add WMAC registration code for the QCA955X SoCs MIPS: ath79: register UART for the QCA955X SoCs MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear} MIPS: ath79: add GPIO setup code for the QCA955X SoCs MIPS: ath79: add IRQ handling code for the QCA955X SoCs MIPS: ath79: add clock setup code for the QCA955X SoCs MIPS: ath79: add SoC detection code for the QCA955X SoCs MIPS: ath79: add early printk support for the QCA955X SoCs MIPS: ath79: fix WMAC IRQ resource assignment mips: reserve elfcorehdr mips: Make sure kernel memory is in iomem MIPS: ath79: use dynamically allocated USB platform devices ...
| * MIPS: Whitespace cleanup.Ralf Baechle2013-02-011-14/+14
| | | | | | | | | | | | | | | | Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Whitespace cleanups and reformatting.Steven J. Hill2013-02-011-2/+2
| | | | | | | | | | | | | | | | | | Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <sjhill@mips.com> Cc: Kevin Cernekee <cernekee@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/4781/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | taint: add explicit flag to show whether lock dep is still OK.Rusty Russell2013-01-211-1/+1
|/ | | | | | | Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* MIPS: Handle COP3 Unusable exception as COP1X for FP emulationMaciej W. Rozycki2012-12-131-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our FP emulator is hardcoded for the MIPS IV FP instruction set and does not match the FP ISA with the general ISA. However for the few MIPS IV FP instructions that use the COP1X major opcode it relies on the Coprocessor Unusable exception to be delivered as a COP1 rather than COP3 exception. This includes indexed transfer (LDXC1, etc.) and FP multiply-accumulate (MADD.D, etc.) instructions. All the MIPS I, II, III and IV processors and some newer chips that do not implement the FPU use the COP3 exception however. Therefore I believe the kernel should follow and redirect any COP3 Unusable traps to the emulator unless an actual FPU part or core is present. This is a change that implements it. Any minor opcode encodings that are not recognised as valid FP instructions are rejected by the emulator and will result in a SIGILL signal being delivered as they currently do. We do not support vendor-specific coprocessor 3 implementations supported with MIPS I and MIPS II ISA processors; we never set CP0.Status.CU3. [Ralf: On MIPS IV processors the kernel always enables the XX bit which replaces the CU3 bit off earlier architecture revisions.] If matching between the CPU and the FPU ISA is considered required one day, this can still be done in the emulator itself. I think the CpU exception dispatcher is not the right place to do this anyway, as there are further differences between MIPS I, MIPS II, MIPS III, MIPS IV and MIPS32 FP ISAs. Corresponding explanation of this implementation is included within the change itself. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/project/linux-mips/list/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: kdump: Add supportRalf Baechle2012-12-131-0/+4
| | | | | | | | | | | | [ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com> with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Cc: linux-mips@linux-mips.org Cc: kexec@lists.infradead.org Cc: horms@verge.net.au Patchwork: https://patchwork.linux-mips.org/patch/1025/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Add CPU support for Loongson1BKelvin Cheung2012-07-231-0/+1
| | | | | | | | | | | | | | | | | | | | Loongson 1B is a 32-bit SoC designed by Institute of Computing Technology (ICT) and the Chinese Academy of Sciences (CAS), which implements the MIPS32 release 2 instruction set. [ralf@linux-mips.org: But which is not strictly a MIPS32 compliant device which also is why it identifies itself with the Legacy Vendor ID in the PrID register. When applying the patch I shoveled some code around to keep things in alphabetical order and avoid forward declarations.] Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com> Cc: To: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: wuzhangjin@gmail.com Cc: zhzhl555@gmail.com Cc: Kelvin Cheung <keguang.zhang@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/3976/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Oprofile: Fix build as a module.Ralf Baechle2012-07-191-0/+1
| | | | | | | | | | | | When building oprofile as a module for R10000 or R7000 class processors, E9000 or MIPSxx class cores since 3572a2c37f667ee49333f8863722b8f43eac506b [MIPS: make oprofile use cp0_perfcount_irq if it is set] an ERROR: "cp0_compare_irq" [arch/mips/oprofile/oprofile.ko] undefined! error will happen. Fixed by exporting cp0_compare_irq. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix Magic SysRq L kernel crash.Vincent Wen2012-07-191-0/+3
| | | | | | | | | | | | show_backtrace() was passed a NULL pointer which caused paging request fail. Set to current task as other architectures (ARM, etc) do when passed a NULL task pointer. Signed-off-by: Vincent Wen <vincentwenlinux@gmail.com> Cc: linux-mips@linux-mips.org Cc: cernekee@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/3524/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Don't panic on 5KEc.Leonid Yegoshin2012-07-191-0/+1
| | | | | | | | | | | | | | It's a bloody bog standard MIPS64R2 core with just a new PrId ID. Iow that essentially means Linux just panics because it doesn't know how to name the core. [ralf@linux-mips.org: Split original patch into several smaller patches.] Signed-off-by: Leonid Yegoshin <yegoshin@mips.com> Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3792/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Provide a symbol for the legacy performance counter interrupt.Ralf Baechle2012-07-061-1/+1
| | | | | | | Based on https://patchwork.linux-mips.org/patch/3576 - but this really deserves its own patchset and the symbol should also be used :) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
*-. Merge branches 'fixes-for-linus', 'generic', 'cavium', 'module.h-fixes', ↵Ralf Baechle2012-05-261-6/+11
|\ \ | | | | | | | | | 'next/ath79' and 'next/lantiq' into mips-for-linux-next
| | * MIPS: Fix several implicit uses of export.h/module.hPaul Gortmaker2012-05-151-0/+1
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These will show up as a build failure once we clean up a misuse of module.h in the mips termios header. Uses export.h: (EXPORT_SYMBOL) arch/mips/cavium-octeon/setup.c arch/mips/pmc-sierra/yosemite/setup.c arch/mips/rb532/devices.c arch/mips/sni/setup.c Uses module.h: (symbol_get/put) arch/mips/alchemy/devboards/db1200.c Uses module.h: (print_modules) arch/mips/kernel/traps.c Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3448/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Move cache setup to setup_arch().David Daney2012-05-161-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 97ce2c88f9ad42e3c60a9beb9fca87abf3639faa (jump-label: initialize jump-label subsystem much earlier) breaks MIPS. The jump_label_init() call was moved before trap_init() which is where we initialize flush_icache_range(). In order to be good citizens, we move cache initialization earlier so that we don't jump through a null flush_icache_range function pointer when doing the jump label initialization. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3822/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Make set_handler() __cpuinit.David Daney2012-05-161-1/+1
| | | | | | | | | | | | | | | | | | Follow-on patches require this. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3818/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Introduce board_cache_error_setup() hook.David Daney2012-05-161-1/+4
|/ | | | | | | | | This is used in subsequent patches. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3819/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Disintegrate asm/system.h for MIPSDavid Howells2012-03-281-1/+0
| | | | | | | | Disintegrate asm/system.h for MIPS. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> cc: linux-mips@linux-mips.org
* MIPS: traps.c: Fix typoMasanari Iida2012-02-201-1/+1
| | | | | | | | | | | Correct spelling of "Schedulier" to "Scheduler" in arch/mips/kernel/traps.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Cc: linux-mips@linux-mips.org Cc: trivial@kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/3354/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2012-01-141-2/+14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (119 commits) MIPS: Delete unused function add_temporary_entry. MIPS: Set default pci cache line size. MIPS: Flush huge TLB MIPS: Octeon: Remove SYS_SUPPORTS_HIGHMEM. MIPS: Octeon: Add support for OCTEON II PCIe MIPS: Octeon: Update PCI Latency timer and enable more error reporting. MIPS: Alchemy: Update cpu-feature-overrides MIPS: Alchemy: db1200: Improve PB1200 detection. MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code. MIPS: Alchemy: chain IRQ controllers to MIPS IRQ controller MIPS: Alchemy: irq: register pm at irq init time MIPS: Alchemy: Touchscreen support on DB1100 MIPS: Alchemy: Hook up IrDA on DB1000/DB1100 net/irda: convert au1k_ir to platform driver. MIPS: Alchemy: remove unused board headers MTD: nand: make au1550nd.c a platform_driver MIPS: Netlogic: Mark Netlogic chips as SMT capable MIPS: Netlogic: Add support for XLP 3XX cores MIPS: Netlogic: Merge some of XLR/XLP wakup code MIPS: Netlogic: Add default XLP config. ... Fix up trivial conflicts in arch/mips/kernel/{perf_event_mipsxx.c, traps.c} and drivers/tty/serial/Makefile
| *-. Merge branches 'next/ar7', 'next/ath79', 'next/bcm63xx', 'next/bmips', ↵Ralf Baechle2012-01-111-0/+12
| |\ \ | | | | | | | | | | | | 'next/cavium', 'next/generic', 'next/kprobes', 'next/lantiq', 'next/perf' and 'next/raza' into mips-for-linux-next
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