path: root/arch/mips/lib
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2011-05-19MIPS: Kconfig and Makefile update for Netlogic XLR/XLSJayachandran C1-0/+1
Add NLM_XLR_BOARD, CPU_XLR and other config options Makefile updates, mostly based on r4k Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2334/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2010-12-16MIPS: Separate two consecutive loads in memset.STony Wu1-2/+2
partial_fixup is used in noreorder block. Separating two consecutive loads can save one cycle on processors with GPR intrelock and can fix load-use on processors that need a load delay slot. Also do so for fwd_fixup. [Ralf: Only R2000/R3000 class processors are lacking the the load-user interlock and even some of those got it retrofitted. With R2000/R3000 being fairly uncommon these days the impact of this bug should be minor.] Signed-off-by: Tony Wu <tung7970@gmail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1768/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: libgcc.h: Checkpatch cleanupAndrea Gelmini1-2/+1
arch/mips/lib/libgcc.h:21: ERROR: open brace '{' following union go on the same line Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> To: linux-kernel@vger.kernel.org Cc: Paul Mundt <lethal@linux-sh.org> Cc: linux-mips@linux-mips.org Cc: linux-sh@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/1007/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: delay: Fix use of current_cpu_data in preemptable code.Ralf Baechle1-2/+2
This may lead to warnings like: BUG: using smp_processor_id() in preemptible [00000000] code: reboot/1989 caller is __udelay+0x14/0x70 Call Trace: [<ffffffff8110ad28>] dump_stack+0x8/0x34 [<ffffffff812dde04>] debug_smp_processor_id+0xf4/0x110 [<ffffffff812d90bc>] __udelay+0x14/0x70 [<ffffffff81378274>] md_notify_reboot+0x12c/0x148 [<ffffffff81161054>] notifier_call_chain+0x64/0xc8 [<ffffffff811614dc>] __blocking_notifier_call_chain+0x64/0xc0 [<ffffffff8115566c>] kernel_restart_prepare+0x1c/0x38 [<ffffffff811556cc>] kernel_restart+0x14/0x50 [<ffffffff8115581c>] SyS_reboot+0x10c/0x1f0 [<ffffffff81103684>] handle_sysn32+0x44/0x84 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-17MIPS: Fix __ndelay build error and add 'ull' suffix for 32-bit kernelAtsushi Nemoto1-2/+2
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-08MIPS: Outline udelay and fix a few issues.Ralf Baechle2-2/+58
Outlining fixes the issue were on certain CPUs such as the R10000 family the delay loop would need an extra cycle if it overlaps a cacheline boundary. The rewrite also fixes build errors with GCC 4.4 which was changed in way incompatible with the kernel's inline assembly. Relying on pure C for computation of the delay value removes the need for explicit. The price we pay is a slight slowdown of the computation - to be fixed on another day. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-05-14MIPS: Cavium: Add support for 8k and 32k page sizes.Ralf Baechle1-0/+9
Beyond the requirements of the architecture standard Cavium also supports 8k and 32k pages. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: David Daney <ddaney@caviumnetworks.com>
2009-01-30MIPS: IP27: Switch from DMA_IP27 to DMA_COHERENTRalf Baechle2-2/+2
The special IP27 DMA code selected by DMA_IP27 has been removed a while ago turning DMA_IP27 into almost a nop. Also fixup the broken logic of its last users memcpy.S and memcpy-inatomic.s. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-11MIPS: Hook up Cavium OCTEON in arch/mips.David Daney1-0/+1
Take all the OCTEON specific files that were added, and hook them into the build system for the arch/mips. For versions of GCC that lack OCTEON support, override gas target architecture. Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Add CONFIG_CPU_R5500 for NEC VR5500 series processorsShinya Kuribayashi2-0/+2
We already have sufficient infrastructure to support VR5500 and VR5500A series processors. Here's a Makefile support to make it selectable by ports, and enable it for NEC EMMA2RH Markeins board. This patch also fixes a confused target help, and adds 1Gb PageMask bits supported by VR5500 and its variants. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-11MIPS: IP checksums: Optimize adjust of sum on buffers of odd alignment.Ralf Baechle1-11/+24
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-11MIPS: IP checksums: Remove unncessary .set pseudosRalf Baechle1-12/+0
They possibly silence meaningful warnings ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-11MIPS: IP checksums: Remove unncessary folding of sum to 16 bit.Ralf Baechle1-10/+0
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-09-21[MIPS] Fix 64-bit IP checksum codeAtsushi Nemoto1-4/+17
Use unsigned loads to avoid possible misscalculation of IP checksums. This bug was instruced in f761106cd728bcf65b7fe161b10221ee00cf7132 (lmo) / ed99e2bc1dc5dc54eb5a019f4975562dbef20103 (kernel.org). [Original fix by Atsushi. Improved instruction scheduling and fix for unaligned unsigned load by me -- Ralf] Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-29iomap: fix 64 bits resources on 32 bitsBenjamin Herrenschmidt1-2/+2
Almost all implementations of pci_iomap() in the kernel, including the generic lib/iomap.c one, copies the content of a struct resource into unsigned long's which will break on 32 bits platforms with 64 bits resources. This fixes all definitions of pci_iomap() to use resource_size_t. I also "fixed" the 64bits arch for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-12[MIPS] Fix loads of section missmatchesRalf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Export __ucmpdi2 to modules.Ralf Baechle1-0/+2
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29[MIPS] Eleminate local symbols from the symbol table.Ralf Baechle7-281/+282
These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29[MIPS] IP28: added cache barrier to assembly routinesThomas Bogendoerfer3-0/+16
IP28 needs special treatment to avoid speculative accesses. gcc takes care for .c code, but for assembly code we need to do it manually. This is taken from Peter Fuersts IP28 patches. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29[MIPS] Put cast inside macro instead of all the callersAndrew Sharp1-6/+6
Since all the callers of the PHYS_TO_XKPHYS macro call with a constant, put the cast to LL inside the macro where it really should be rather than in all the callers. This makes macros like PHYS_TO_XKSEG_UNCACHED work without gcc whining. Signed-off-by: Andrew Sharp <andy.sharp@onstor.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29[MIPS] R4000/R4400 daddiu erratum workaroundMaciej W. Rozycki5-31/+130
This complements the generic R4000/R4400 errata workaround code and adds bits for the daddiu problem. In most places it just modifies handwritten assembly code so that the assembler is allowed to use a temporary register as daddiu may now be treated as a macro that expands to a sequence of li and daddu. It is the AT register or, where AT is unavailable or used explicitly for another purpose, an explicitly-named register is selected, using the .set at=<reg> feature added recently to gas. This feature is only used if CONFIG_CPU_DADDI_WORKAROUNDS has been set, so if the workaround remains disabled, the required version of binutils stays unchanged. Similarly, daddiu instructions put in branch delay slots in noreorder fragments are now taken out of them and the assembler is allowed to reorder them itself as possible (which it does making the whole idea of scheduling them into delay slots manually questionable). Also in the very few places where such a simple conversion was not possible, a handcoded longer sequence is implemented. Other than that there are changes to code responsible for building the TLB fault and page clear/copy handlers to avoid daddiu as appropriate. These are only effective if the erratum is verified to be present at the run time. Finally there is a trivial update to __delay(), because it uses daddiu in a branch delay slot. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11[MIPS] Fix "no space between function name and open parenthesis" warnings.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27[MIPS] Add __cmpdi2Ralf Baechle2-1/+28
Certain 32-bit kernel configurations seem to be able to cause references, this was observed with gcc 4.1.2. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-12[MIPS] Include cacheflush.h in uncache.cAtsushi Nemoto1-0/+1
This fixes this sparse warning: arch/mips/lib/uncached.c:38:22: warning: symbol 'run_uncached' was not declared. Should it be static? Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-12[MIPS] Cleanup tlbdebug.hAtsushi Nemoto2-0/+2
Also include tlbdebug.h in dump_tlb.c and r3k_dump_tlb.c. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-10[MIPS] define Hit_Invalidate_I to Index_Invalidate_I for loongson2Fuxin Zhang1-0/+1
Signed-off-by: Fuxin Zhang <zhangfx@lemote.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-10[MIPS] Remove unused dump_tlb functionsAtsushi Nemoto2-264/+2
Remove unused dump_tlb functions and cleanup some includes. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-10[MIPS] Unify dump_tlbAtsushi Nemoto3-0/+442
Unify lib-{32,64}/dump_tlb.c into lib/dump_tlb.c and move lib-32/r3k_dump_tlb.c to lib directory. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-06[MIPS] Change libgcc-style functions from lib-y to obj-yRalf Baechle1-1/+1
Reported by Eugene Surovegin <ebs@ebshome.net>. If only modules were users of these functions they did not get linked into the kernel proper, so later module loads would fail as well. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-06-26[MIPS] __ucmpdi2 arguments are unsigned long long.Ralf Baechle1-1/+1
Reported by Eugene Surovegin <ebs@ebshome.net>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-05-11[MIPS] Add __ucmpdi2 implementationThiemo Seufer2-1/+20
Recent GCC SVN versions may generate calls to __ucmpdi2. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-05-02PCI: Cleanup the includes of <linux/pci.h>Jean Delvare1-1/+0
I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-04[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.Ralf Baechle2-26/+2
early_printk is a so much saner thing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-26[MIPS] Kill redundant EXTRA_AFLAGSAtsushi Nemoto1-2/+0
Many Makefiles in arch/mips have EXTRA_AFLAGS := $(CFLAGS) line. This is redundant while AFLAGS contains $(cflags-y) and any options only listed in CFLAGS (not in cflags-y) should be unnecessary for asm sources. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-20[MIPS] Fixup copy_from_user_inatomicRalf Baechle2-1/+437
From the 01408c4939479ec46c15aa7ef6e2406be50eeeca log message: The problem is that when we write to a file, the copy from userspace to pagecache is first done with preemption disabled, so if the source address is not immediately available the copy fails *and* *zeros* *the* *destination*. This is a problem because a concurrent read (which admittedly is an odd thing to do) might see zeros rather that was there before the write, or what was there after, or some mixture of the two (any of these being a reasonable thing to see). If the copy did fail, it will immediately be retried with preemption re-enabled so any transient problem with accessing the source won't cause an error. The first copying does not need to zero any uncopied bytes, and doing so causes the problem. It uses copy_from_user_atomic rather than copy_from_user so the simple expedient is to change copy_from_user_atomic to *not* zero out bytes on failure. < --- end cite --- > This patch finally implements at least a not so pretty solution by duplicating the relevant part of __copy_user. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-18[MIPS] Iomap implementation.Ralf Baechle3-53/+277
This implementation has support for the concept of one separate ioport address space by PCI domain. A pointer to the virtual address where the port space of a domain has been mapped has been added to struct pci_controller and systems should be fixed to fill in this value. For single domain systems this will be the same value as passed to set_io_port_base(). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06[MIPS] Fix warnings in run_uncached on 32bit kernelYoichi Yuasa1-0/+4
arch/mips/lib/uncached.c: In function 'run_uncached': arch/mips/lib/uncached.c:47: warning: comparison is always true due to limited range of data type arch/mips/lib/uncached.c:48: warning: comparison is always false due to limited range of data type arch/mips/lib/uncached.c:57: warning: comparison is always true due to limited range of data type arch/mips/lib/uncached.c:58: warning: comparison is always false due to limited range of data type Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06[MIPS] Unify memset.SAtsushi Nemoto2-1/+167
The 32-bit version and 64-bit version are almost equal. Unify them. This makes further improvements (for example, supporting CDEX, etc.) easier. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-08[MIPS] csum_partial and copy in parallelAtsushi Nemoto3-53/+443
Implement optimized asm version of csum_partial_copy_nocheck, csum_partial_copy_from_user and csum_and_copy_to_user which can do calculate and copy in parallel, based on memcpy.S. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-10[MIPS] Export csum_partial_copy_nocheck.Ralf Baechle1-0/+3
ibmtr.c and typhoon.c use it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-09[MIPS] Optimize csum_partial for 64bit kernelAtsushi Nemoto1-22/+54
Make csum_partial 64-bit powered. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-09[MIPS] Optimize flow of csum_partialAtsushi Nemoto1-75/+54
Delete dead codes at end of the function and move small_csumcopy there. This makes some labels (maybe_end_cruft, small_memcpy, end_bytes, out) needless and eliminates some branches. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-09[MIPS] Make csum_partial more readableAtsushi Nemoto1-70/+74
Use standard o32 register name instead of T0, T1, etc, like memcpy.S. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04[MIPS] Unify csum_partial.SAtsushi Nemoto2-2/+260
The 32-bit version and 64-bit version are almost equal. Unify them. This makes further improvements (for example, copying with parallel, supporting PREFETCH, etc.) easier. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-02[NET]: MIPS checksum annotations and cleanups.Al Viro1-4/+4
* sanitize prototypes, annotate * kill shift-by-16 in checksum calculations * htons->shift in l-e checksum calculations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-19[MIPS] Fix optimization for size build.Ralf Baechle5-0/+118
It took a while longer than on other architectures but gcc has finally started to strike us as well ... This also fixes the damage by 6edfba1b33c701108717f4e036320fc39abe1912. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-28[MIPS] Fix build error on processors that don's support copy-on-write.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10Update Yoichi Yuasa's email address.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>