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2007-06-06[MIPS] Make dma_map_sg handle sg elements which are longer than one pageThomas Bogendoerfer
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-05-21Detach sched.h from mm.hAlexey Dobriyan
First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11[MIPS] tlbex: use __maybe_unusedDavid Rientjes
Replace function instances of __attribute__((unused)) with __maybe_unused. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-05-11[MIPS] Remove LIMITED_DMA supportFranck Bui-Huu
This code was needed only by Jaguar ATX. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-27[MIPS] Remove unused argument from kunmap_coherent().Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-27[MIPS] Select ZONE_DMA only if GENERIC_ISA_DMA selectedAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] do_page_fault() needs to use raw_smp_processor_id().Ralf Baechle
Original patch posted by Deepak Saxena <dsaxena@plexity.net>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] SB1250: Fix bugs/warnings by creative use of volatile.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] SB1: Fix pile of gcc's bogus format string warnings.Ralf Baechle
CC arch/mips/mm/cerr-sb1.o arch/mips/mm/cerr-sb1.c: In function 'sb1_cache_error': arch/mips/mm/cerr-sb1.c:235: warning: format '%010llx' expects type 'long long unsigned int', but argument 2 has type 'uint64_t' arch/mips/mm/cerr-sb1.c: In function 'extract_ic': arch/mips/mm/cerr-sb1.c:385: warning: format '%016llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' arch/mips/mm/cerr-sb1.c:385: warning: format '%016llX' expects type 'long long unsigned int', but argument 6 has type 'uint64_t' arch/mips/mm/cerr-sb1.c: In function 'extract_dc': arch/mips/mm/cerr-sb1.c:523: warning: format '%010llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' arch/mips/mm/cerr-sb1.c:523: warning: format '%016llX' expects type 'long long unsigned int', but argument 7 has type 'uint64_t' arch/mips/mm/cerr-sb1.c:570: warning: format '%016llX' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' LD arch/mips/mm/built-in.o Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] R3000: local_flush_data_cache_page take a pointer argument.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] Implement flush_anon_page().Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] SPARSEMEM: The first pfn of zone should be min_low_pfn, not 0.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] Always use virt_to_phys() when translating kernel addressesFranck Bui-Huu
This patch fixes two places where we used plain 'x - PAGE_OFFSET' to achieve virtual to physical address convertions. This type of convertion is no more allowed since commit 6f284a2ce7b8bc49cb8455b1763357897a899abb. Reported-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> [Build fixes for machines that don't use the generic dma-coherence.h] Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-07[MIPS] TX39: Remove redundant tx39_blast_icache() callsAtsushi Nemoto
Apply commit 0550d9d13e02b30efa117d47fcadea450bb23d23 to c-tx39.c too. And fix a warning in local_tx39_flush_data_cache_page(). Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-04[MIPS] dma_sync_sg_for_cpu is a no-op except for non-coherent R10000s.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-04[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.Ralf Baechle
early_printk is a so much saner thing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-26[MIPS] Fix dma_sync_*_for_device() functionsThomas Bogendoerfer
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-26[MIPS] Kill redundant EXTRA_AFLAGSAtsushi Nemoto
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>
2007-02-22Revert "[PATCH] Generic ioremap_page_range: mips conversion"Ralf Baechle
The generic version truncates addresses. This reverts commit 8e087929df884dbb13e383d49d192bdd6928ecbf.
2007-02-20[MIPS] Declare highstart_pfn, highend_pfn only if CONFIG_HIGHMEM=yRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-18[MIPS] Add external declaration of pagetable_init() to pgalloc.hAtsushi Nemoto
This fixes some sparse warnings. pgtable-32.c:15:6: warning: symbol 'pgd_init' was not declared. Should it be static? pgtable-32.c:32:13: warning: symbol 'pagetable_init' 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>
2007-02-13[MIPS] Fix uniprocessor Sibyte builds.Andrew Sharp
Signed-off-by: Andrew Sharp <tigerand@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-13[MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}Ralf Baechle
Platforms will now have to supply a function dma_device_is_coherent which returns if a particular device participates in the coherence domain. For most platforms this function will always return 0 or 1. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-11[PATCH] extend the set of "__attribute__" shortcut macrosRobert P. J. Day
Extend the set of "__attribute__" shortcut macros, and remove identical (and now superfluous) definitions from a couple of source files. based on a page at robert love's blog: http://rlove.org/log/2005102601 extend the set of shortcut macros defined in compiler-gcc.h with the following: #define __packed __attribute__((packed)) #define __weak __attribute__((weak)) #define __naked __attribute__((naked)) #define __noreturn __attribute__((noreturn)) #define __pure __attribute__((pure)) #define __aligned(x) __attribute__((aligned(x))) #define __printf(a,b) __attribute__((format(printf,a,b))) Once these are in place, it's up to subsystem maintainers to decide if they want to take advantage of them. there is already a strong precedent for using shortcuts like this in the source tree. The ones that might give people pause are "__aligned" and "__printf", but shortcuts for both of those are already in use, and in some ways very confusingly. note the two very different definitions for a macro named "ALIGNED": drivers/net/sgiseeq.c:#define ALIGNED(x) ((((unsigned long)(x)) + 0xf) & ~(0xf)) drivers/scsi/ultrastor.c:#define ALIGNED(x) __attribute__((aligned(x))) also: include/acpi/platform/acgcc.h: #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1))) Given the precedent, then, it seems logical to at least standardize on a consistent set of these macros. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-06[MIPS] Move some kernel globals from asm file to C file.Atsushi Nemoto
This get rid of some undesirable hole in BSS section due to random order of placement. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06[MIPS] Setup min_low_pfn/max_low_pfn correctlyFranck Bui-Huu
This patch makes a better usage of these two globals. 'min_low_pfn' is now correctly setup for all configs, which allow us to rely on it in boot memory code init. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06[MIPS] prom_free_prom_memory cleanupAtsushi Nemoto
Current prom_free_prom_memory() implementations are almost same as free_init_pages(), or no-op. Make free_init_pages() extern (again) and make prom_free_prom_memory() use it. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-24[MIPS] Fix reported amount of freed memory - it's in kB not bytesThiemo Seufer
While at it, change message on DEC for consistency. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-19[MIPS] Delete duplicate call to load_irq_save.Ralf Baechle
This call may have resulted to local_tlb_flush_range returning with interrupts disabled resulting in excessive interrupt latency. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-08[MIPS] TX49: Fix use of CDEX build_store_reg()Atsushi Nemoto
The commit a923660d786a53e78834b19062f7af2535f7f8ad accidently prevents TX49 from using CDEX. Use build_dst_pref() only if prefetch for store was really available. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-13[PATCH] MIPS: Fix COW D-cache aliasing on forkAtsushi Nemoto
Provide a custom copy_user_highpage() to deal with aliasing issues on MIPS. It uses kmap_coherent() to map an user page for kernel with same color. Rewrite copy_to_user_page() and copy_from_user_page() with the new interfaces to avoid extra cache flushing. The main part of this patch was originally written by Ralf Baechle; Atushi Nemoto did the the debugging. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-12[MIPS] paging_init(): use highend_pfn/highstart_pfnFranck Bui-Huu
This patch makes paging_init() use highend_pfn/highstart_pfn globals. It removes the need of 'high' local which was needed only by HIGHMEM config. More important perhaps, it fixes a bug when HIGHMEM is set but there's actually no physical highmem (highend_pfn = 0) Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-10[MIPS] Export local_flush_data_cache_page for sake of IDE.Ralf Baechle
On a CPU with aliases the IDE core needs to flush caches in the special IDE variants of insw, insl etc. If IDE support is built as a module this will only work if local_flush_data_cache_page happens is exported as a module. As per policy export local_flush_data_cache_page as GPL symbol only. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-08[PATCH] Generic ioremap_page_range: mips conversionHaavard Skinnemoen
Convert MIPS to use generic ioremap_page_range() [yoichi_yuasa@tripeaks.co.jp: build fix] Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Pass struct dev pointer to dma_cache_sync()Ralf Baechle
Pass struct dev pointer to dma_cache_sync() dma_cache_sync() is ill-designed in that it does not have a struct device pointer argument which makes proper support for systems that consist of a mix of coherent and non-coherent DMA devices hard. Change dma_cache_sync to take a struct device pointer as first argument and fix all its callers to pass it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Add struct dev pointer to dma_is_consistent()Ralf Baechle
dma_is_consistent() is ill-designed in that it does not have a struct device pointer argument which makes proper support for systems that consist of a mix of coherent and non-coherent DMA devices hard. Change dma_is_consistent to take a struct device pointer as first argument and fix the sole caller to pass it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] mm: pagefault_{disable,enable}()Peter Zijlstra
Introduce pagefault_{disable,enable}() and use these where previously we did manual preempt increments/decrements to make the pagefault handler do the atomic thing. Currently they still rely on the increased preempt count, but do not rely on the disabled preemption, this might go away in the future. (NOTE: the extra barrier() in pagefault_disable might fix some holes on machines which have too many registers for their own good) [heiko.carstens@de.ibm.com: s390 fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Nick Piggin <npiggin@suse.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-30[MIPS] Avoid dupliate D-cache flush on R400C / R4400 SC and MC variants.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30[MIPS] Remove redundant r4k_blast_icache() callsAtsushi Nemoto
r4k_flush_cache_all() and r4k_flush_cache_mm() case: these are noop if the CPU did not have dc_aliases. It would mean we do not need to care about icache here. r4k_flush_cache_range case: if r4k_flush_cache_mm() did not need to care about icache, it would be same for this function. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30[MIPS] Load modules to CKSEG0 if CONFIG_BUILD_ELF64=nAtsushi Nemoto
This is a patch to load 64-bit modules to CKSEG0 so that can be compiled with -msym32 option. This makes each module ~10% smaller. * introduce MODULE_START and MODULE_END * custom module_alloc() * PGD for modules * change XTLB refill handler synthesizer * enable -msym32 for modules again (revert ca78b1a5c6a6e70e052d3ea253828e49b5d07c8a) New XTLB refill handler looks like this: 80000080 dmfc0 k0,C0_BADVADDR 80000084 bltz k0,800000e4 # goto l_module_alloc 80000088 lui k1,0x8046 # %high(pgd_current) 8000008c ld k1,24600(k1) # %low(pgd_current) 80000090 dsrl k0,k0,0x1b # l_vmalloc_done: 80000094 andi k0,k0,0x1ff8 80000098 daddu k1,k1,k0 8000009c dmfc0 k0,C0_BADVADDR 800000a0 ld k1,0(k1) 800000a4 dsrl k0,k0,0x12 800000a8 andi k0,k0,0xff8 800000ac daddu k1,k1,k0 800000b0 dmfc0 k0,C0_XCONTEXT 800000b4 ld k1,0(k1) 800000b8 andi k0,k0,0xff0 800000bc daddu k1,k1,k0 800000c0 ld k0,0(k1) 800000c4 ld k1,8(k1) 800000c8 dsrl k0,k0,0x6 800000cc mtc0 k0,C0_ENTRYLO0 800000d0 dsrl k1,k1,0x6 800000d4 mtc0 k1,C0_ENTRYL01 800000d8 nop 800000dc tlbwr 800000e0 eret 800000e4 dsll k1,k0,0x2 # l_module_alloc: 800000e8 bgez k1,80000008 # goto l_vmalloc 800000ec lui k1,0xc000 800000f0 dsubu k0,k0,k1 800000f4 lui k1,0x8046 # %high(module_pg_dir) 800000f8 beq zero,zero,80000000 800000fc nop 80000000 beq zero,zero,80000090 # goto l_vmalloc_done 80000004 daddiu k1,k1,0x4000 80000008 dsll32 k1,k1,0x0 # l_vmalloc: 8000000c dsubu k0,k0,k1 80000010 beq zero,zero,80000090 # goto l_vmalloc_done 80000014 lui k1,0x8046 # %high(swapper_pg_dir) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30[MIPS] Make free_init_pages() arguments to be physical addressesFranck Bui-Huu
It allows caller of this function to not care about CKSEG0/XKPHYS address mixes. It's now automatically done by free_init_pages(). We can now safely remove hack needed by 64 bit kernels with CONFIG_BUILD_ELF64=n in free_initmem(). Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30[MIPS] setup.c: clean up initrd related codeFranck Bui-Huu
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30[MIPS] page.h: remove __pa() usages.Franck Bui-Huu
__pa() was used by virt_to_page() and virt_addr_valid(). These latter are used when kernel is initialised so __pa() is not appropriate, we use virt_to_phys() instead. Futhermore __pa() is going to take care of CKSEG0/XKPHYS address mix for 64 bit kernels. This makes __pa() more complex than virt_to_phys() and this extra work is not needed by virt_to_page() and virt_addr_valid(). Eventually it consolidates virt_to_phys() prototype by making its argument 'const'. this avoids some warnings that was due to some virt_to_page() usages which pass const pointer. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-22[MIPS] Hack for SB1 cache issuesThiemo Seufer
Removing flush_icache_page a while ago broke SB1 which was using an empty flush_data_cache_page function. This glues things well enough so a more efficient but also more intrusive solution can be found later. Signed-Off-By: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06[MIPS] SB1: On bootup only flush cache on local CPU.Ralf Baechle
This fixes a warning on bootup warning in smp_call_function. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-01[MIPS] 16K & 64K page size fixesRalf Baechle
Derived from Peter Watkins <treestem@gmail.com>'s work. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Make SB1 cache flushes not to use on_each_cpuManish Lachwani
This fixes the start_kernel(): bug: interrupts were enabled early messages. Signed-off-by: Manish Lachwani <mlachwani@mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Fix warning about unused definition in c-sb1.cYoichi Yuasa
arch/mips/mm/c-sb1.c: In function `sb1_cache_init': arch/mips/mm/c-sb1.c:447: warning: unused variable `handle_vec2_sb1' Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-21[MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_pageRalf Baechle
The current implementation uses a sequence of a cacheflush and a copy. This is racy in case of a multithreaded debuggee and renders GDB virtually unusable. Aside this fixes a performance hog rendering access to /proc/cmdline very slow and resulting in a enough cache stalls for the 34K AP/SP programming model to make the bare metal code on the non-Linux VPE miss RT deadlines. The main part of this patch was originally written by Ralf Baechle; Atushi Nemoto did the the debugging. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>