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2007-10-03[POWERPC] Limit range of __init_ref_ok somewhatStephen Rothwell
This patch introduces zalloc_maybe_bootmem and uses it so that we don't have to mark a whole (largish) routine as __init_ref_ok. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03[POWERPC] Create and use CONFIG_WORD_SIZEStephen Rothwell
Linus made this suggestion for the x86 merge and this starts the process for powerpc. We assume that CONFIG_PPC64 implies CONFIG_PPC_MERGE and CONFIG_PPC_STD_MMU_32 implies CONFIG_PPC_STD_MMU. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19[POWERPC] Fix section mismatch in PCI codeStephen Rothwell
Create a helper function (alloc_maybe_bootmem) that is marked __init_refok to limit the chances of mistakenly referring to other __init routines. WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier') WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr') WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-29Remove fs.h from mm.hAlexey Dobriyan
Remove fs.h from mm.h. For this, 1) Uninline vma_wants_writenotify(). It's pretty huge anyway. 2) Add back fs.h or less bloated headers (err.h) to files that need it. As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files rebuilt down to 3444 (-12.3%). Cross-compile tested without regressions on my two usual configs and (sigh): alpha arm-mx1ads mips-bigsur powerpc-ebony alpha-allnoconfig arm-neponset mips-capcella powerpc-g5 alpha-defconfig arm-netwinder mips-cobalt powerpc-holly alpha-up arm-netx mips-db1000 powerpc-iseries arm arm-ns9xxx mips-db1100 powerpc-linkstation arm-assabet arm-omap_h2_1610 mips-db1200 powerpc-lite5200 arm-at91rm9200dk arm-onearm mips-db1500 powerpc-maple arm-at91rm9200ek arm-picotux200 mips-db1550 powerpc-mpc7448_hpc2 arm-at91sam9260ek arm-pleb mips-ddb5477 powerpc-mpc8272_ads arm-at91sam9261ek arm-pnx4008 mips-decstation powerpc-mpc8313_rdb arm-at91sam9263ek arm-pxa255-idp mips-e55 powerpc-mpc832x_mds arm-at91sam9rlek arm-realview mips-emma2rh powerpc-mpc832x_rdb arm-ateb9200 arm-realview-smp mips-excite powerpc-mpc834x_itx arm-badge4 arm-rpc mips-fulong powerpc-mpc834x_itxgp arm-carmeva arm-s3c2410 mips-ip22 powerpc-mpc834x_mds arm-cerfcube arm-shannon mips-ip27 powerpc-mpc836x_mds arm-clps7500 arm-shark mips-ip32 powerpc-mpc8540_ads arm-collie arm-simpad mips-jazz powerpc-mpc8544_ds arm-corgi arm-spitz mips-jmr3927 powerpc-mpc8560_ads arm-csb337 arm-trizeps4 mips-malta powerpc-mpc8568mds arm-csb637 arm-versatile mips-mipssim powerpc-mpc85xx_cds arm-ebsa110 i386 mips-mpc30x powerpc-mpc8641_hpcn arm-edb7211 i386-allnoconfig mips-msp71xx powerpc-mpc866_ads arm-em_x270 i386-defconfig mips-ocelot powerpc-mpc885_ads arm-ep93xx i386-up mips-pb1100 powerpc-pasemi arm-footbridge ia64 mips-pb1500 powerpc-pmac32 arm-fortunet ia64-allnoconfig mips-pb1550 powerpc-ppc64 arm-h3600 ia64-bigsur mips-pnx8550-jbs powerpc-prpmc2800 arm-h7201 ia64-defconfig mips-pnx8550-stb810 powerpc-ps3 arm-h7202 ia64-gensparse mips-qemu powerpc-pseries arm-hackkit ia64-sim mips-rbhma4200 powerpc-up arm-integrator ia64-sn2 mips-rbhma4500 s390 arm-iop13xx ia64-tiger mips-rm200 s390-allnoconfig arm-iop32x ia64-up mips-sb1250-swarm s390-defconfig arm-iop33x ia64-zx1 mips-sead s390-up arm-ixp2000 m68k mips-tb0219 sparc arm-ixp23xx m68k-amiga mips-tb0226 sparc-allnoconfig arm-ixp4xx m68k-apollo mips-tb0287 sparc-defconfig arm-jornada720 m68k-atari mips-workpad sparc-up arm-kafa m68k-bvme6000 mips-wrppmc sparc64 arm-kb9202 m68k-hp300 mips-yosemite sparc64-allnoconfig arm-ks8695 m68k-mac parisc sparc64-defconfig arm-lart m68k-mvme147 parisc-allnoconfig sparc64-up arm-lpd270 m68k-mvme16x parisc-defconfig um-x86_64 arm-lpd7a400 m68k-q40 parisc-up x86_64 arm-lpd7a404 m68k-sun3 powerpc x86_64-allnoconfig arm-lubbock m68k-sun3x powerpc-cell x86_64-defconfig arm-lusl7200 mips powerpc-celleb x86_64-up arm-mainstone mips-atlas powerpc-chrp32 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-19[POWERPC] rheap - eliminates internal fragments caused by alignmentLi Yang
The patch adds fragments caused by rh_alloc_align() back to free list, instead of allocating the whole chunk of memory. This will greatly improve memory utilization managed by rheap. It solves MURAM not enough problem with 3 UCCs enabled on MPC8323. Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-17[POWERPC] Fix alignment problem in rh_alloc_align() with exact-sized blocksTimur Tabi
When an rheap is created, the caller can specify the alignment to use. In rh_alloc_align(), if a free block is found that is the exact size needed (including extra space for alignment), that configured alignment value is not used to align the pointer. Instead, the default alignment is used. If the default alignment is smaller than the configured alignment, then the returned value will not be aligned correctly. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-09[POWERPC] User rheap from arch/powerpc/libKumar Gala
Removed rheap in arch/ppc/lib and changed build system to use the one in arch/powerpc/lib. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-09[POWERPC] Change rheap functions to use ulongs instead of pointersTimur Tabi
The rheap allocation functions return a pointer, but the actual value is based on how the heap was initialized, and so it can be anything, e.g. an offset into a buffer. A ulong is a better representation of the value returned by the allocation functions. This patch changes all of the relevant rheap functions to use a unsigned long integers instead of a pointer. In case of an error, the value returned is a negative error code that has been cast to an unsigned long. The caller can use the IS_ERR_VALUE() macro to check for this. All code which calls the rheap functions is updated accordingly. Macros IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE(). Also added error checking to rh_attach_region(). Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-08[POWERPC] Remove use of 4level-fixup.h for ppc32David Gibson
For 32-bit systems, powerpc still relies on the 4level-fixup.h hack, to pretend that the generic pagetable handling stuff is 3-levels rather than 4. This patch removes this, instead using the newer pgtable-nopmd.h to handle the elision of both the pud and pmd pagetable levels (ppc32 pagetables are actually 2 levels). This removes a little extraneous code, and makes it more easily compared to the 64-bit pagetable code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30Merge branch 'linux-2.6' into for-2.6.22Paul Mackerras
2007-04-26[STRING]: Move strcasecmp/strncasecmp to lib/string.cDavid S. Miller
We have several platforms using local copies of identical code. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-24[POWERPC] Emulate more instructions in softwareAnanth N Mavinakayanahalli
Emulate a few more instructions in software - especially useful during singlestepping (xmon/kprobes). Instructions emulated with this patch are mfcr/mtcr rX, mfxer/mtxer rX, mflr/mtlr rX, mfctr/mtctr rX and mr rA,rB. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-13[POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=yOlof Johansson
mtocrf is a faster single-field mtcrf (move to condition register fields) instruction available in POWER4 and later processors. It can make quite a difference in performance on some implementations, so use it for CONFIG_POWER4_ONLY builds. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-09[POWERPC] Make ppc64_defconfig without CONFIG_PPC_PSERIES buildStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-02-08[POWERPC] Use ARRAY_SIZE macro when appropriateAhmed S. Darwish
Use ARRAY_SIZE macro already defined in linux/kernel.h Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-02-06[POWERPC] Added kprobes support to ppc32Kumar Gala
Added kprobes to ppc32 platforms that have use single_step_exception. This excludes 4xx and anything Book-E since their debug mechanisms for single stepping are completely different. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-02-07[POWERPC] Fix array indexing error in rheap grow()Timur Tabi
The grow() function in the rheap library allocates a larger array of blocks, copies the contents of the old blocks array to the newly allocated array and fixes the list_head pointers after the copy. At the end, the new blocks must be enqueued to the empty_list of the rh_info_t structure. This patch fixes a bug where the code was indexing past the end of the array when enqueueing blocks. The UCC ethernet driver, which uses the rheap allocator, experiences kernel panics because of this bug. Signed-off-by: Ionut Nicu <ionut.nicu@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-02-07[POWERPC] 8xx: generic 8xx code arch/powerpc portVitaly Bordug
Including support for non-coherent cache, some mm-related things + relevant field in Kconfig and Makefiles. Also included rheap.o compilation if 8xx is defined. Non-coherent mapping were refined and renamed according to Cristoph Hellwig. Orphaned functions were cleaned up. [Also removed arch/ppc/kernel/dma-mapping.c, because otherwise compiling with ARCH=ppc for a non DMA-cache-coherent platform ends up with two copies of __dma_alloc_coherent etc. -- paulus.] Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Disallow kprobes on emulate_step and branch_takenGui,Jian
On powerpc, probing on emulate_step function will crash 2.6.18.1 when it is triggered. When kprobe is triggered, emulate_step() is on its kernel path and will cause recursive kprobe fault. And branch_taken() is called in emulate_step(). This disallows kprobes on both of them. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-02[POWERPC] Fix rheap alignment problemLi Yang
Honor alignment parameter in the rheap allocator. This is needed by qe_lib. Remove compile warning. Signed-off-by: Pantelis Antoniou <pantelis@embeddedalley.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Kumar Galak <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-28Merge branch 'upstream' of ↵Paul Mackerras
git://git.kernel.org/pub/scm/linux/kernel/git/vitb/linux-2.6-PQ
2006-09-21POWERPC: Move generic cpm2 stuff to powerpcVitaly Bordug
This moves the cpm2 common code and PIC stuff to the powerpc. Most of the files were just copied from ppc/, with minor tuning to make it compile, and, subsequently, work. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-20[POWERPC] make spinlocks work in a combined kernelStephen Rothwell
If we build a pSeries/iSeries combined kernel, we will need this. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-08-31Merge branch 'merge'Paul Mackerras
2006-08-31[POWERPC] Fix return value from memcpyPaul Mackerras
As pointed out by Herbert Xu <herbert@gondor.apana.org.au>, our memcpy implementation didn't return the destination pointer as its return value, and there is code in the kernel that expects that. This fixes it. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-13[POWERPC] iseries: Move e2a()/strne2a() into their only callerMichael Ellerman
The ASCII -> EBCDIC functions, e2a() and strne2a() are now only used in dt.c, so move them in there. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-15[POWERPC] Optimise some TOC usageAnton Blanchard
Micro-optimisation - add no-minimal-toc to some more arch/powerpc Makefiles. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-05-24[PATCH] remove powerpc bitops in favor of existing generic bitopsJon Mason
There already exists a big endian safe bitops implementation in lib/find_next_bit.c. The code in it is 90%+ common with the powerpc specific version, so the powerpc version is redundant. This patch makes the necessary changes to use the generic bitops in powerpc, and removes the powerpc specific version. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: fix various sparse warningsStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-25powerpc: fix strncasecmp prototypeLinus Torvalds
It takes a size_t, not an int, as its third argument. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22[PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCIIMichael Ellerman
Add strne2a() which converts a string from EBCDIC to ASCII. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-10[PATCH] powerpc: trivial: modify comments to refer to new location of filesJon Mason
This patch removes all self references and fixes references to files in the now defunct arch/ppc64 tree. I think this accomplises everything wanted, though there might be a few references I missed. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-13[PATCH] powerpc: Remove lppaca structure from the PACADavid Gibson
At present the lppaca - the structure shared with the iSeries hypervisor and phyp - is contained within the PACA, our own low-level per-cpu structure. This doesn't have to be so, the patch below removes it, making a separate array of lppaca structures. This saves approximately 500*NR_CPUS bytes of image size and kernel memory, because we don't need aligning gap between the Linux and hypervisor portions of every PACA. On the other hand it means an extra level of dereference in many accesses to the lppaca. The patch also gets rid of several places where we assign the paca address to a local variable for no particular reason. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10powerpc: Fix find_next_bit on 32-bitPaul Mackerras
We had a "64" that didn't get changed to BITS_PER_LONG, resulting in find_next_bit not working correctly. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07Merge ../linux-2.6Paul Mackerras
2005-11-07powerpc: Various UP build fixesPaul Mackerras
Mostly this involves adding #include <asm/smp.h>, since that defines things like boot_cpuid[_phys] and [gs]et_hard_smp_processor_id, which are SMP-related but still needed on UP. This incorporates fixes posted by Olof Johansson and Heikki Lindholm. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-06[PATCH] ppc64: support 64k pagesBenjamin Herrenschmidt
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel base page size to 64K. The resulting kernel still boots on any hardware. On current machines with 4K pages support only, the kernel will maintain 16 "subpages" for each 64K page transparently. Note that while real 64K capable HW has been tested, the current patch will not enable it yet as such hardware is not released yet, and I'm still verifying with the firmware architects the proper to get the information from the newer hypervisors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-02Merge iSeries include file moveStephen Rothwell
2005-11-01[PATCH] powerpc: Merge bitops.hDavid Gibson
Here's a revised version. This re-introduces the set_bits() function from ppc64, which I removed because I thought it was unused (it exists on no other arch). In fact it is used in the powermac interrupt code (but not on pSeries). - We use LARXL/STCXL macros to generate the right (32 or 64 bit) instructions, similar to LDL/STL from ppc_asm.h, used in fpu.S - ppc32 previously used a full "sync" barrier at the end of test_and_*_bit(), whereas ppc64 used an "isync". The merged version uses "isync", since I believe that's sufficient. - The ppc64 versions of then minix_*() bitmap functions have changed semantics. Previously on ppc64, these functions were big-endian (that is bit 0 was the LSB in the first 64-bit, big-endian word). On ppc32 (and x86, for that matter, they were little-endian. As far as I can tell, the big-endian usage was simply wrong - I guess no-one ever tried to use minixfs on ppc64. - On ppc32 find_next_bit() and find_next_zero_bit() are no longer inline (they were already out-of-line on ppc64). - For ppc64, sched_find_first_bit() has moved from mmu_context.h to the merged bitops. What it was doing in mmu_context.h in the first place, I have no idea. - The fls() function is now implemented using the cntlzw instruction on ppc64, instead of generic_fls(), as it already was on ppc32. - For ARCH=ppc, this patch requires adding arch/powerpc/lib to the arch/ppc/Makefile. This in turn requires some changes to arch/powerpc/lib/Makefile which didn't correctly handle ARCH=ppc. Built and running on G5. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01merge filename and modify references to iseries/hv_call.hKelly Daly
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-01powerpc: fix __strnlen_user in merge treeStephen Rothwell
Change USER/KERNEL_DS so that the merged version of __strnlen_user can be used which allows us to complete the removal of arch/ppc64/lib/. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-31powerpc: apply recent changes to merged codePaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28powerpc: Merge xmonPaul Mackerras
The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28powerpc: Make single-stepping emulation (mostly) usable on 32-bitPaul Mackerras
The sc instruction emulation can't be done the same way on 32-bit as 64-bit yet, but this should work OK. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28ppc64: use mem_64.S from powerpc/libStephen Rothwell
and remove the same bits from ppc64/lib/string.S. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-28ppc64: use usercopy_64.c from powerpc/libStephen Rothwell
since it is identical to usercopy.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-28ppc64: user strcase.c from powerpc/libStephen Rothwell
since it is identical to strcase.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-28ppc64: use sstep.c from powerpc/libStephen Rothwell
since it is identical to sstep.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-28ppc64: use memcpy_64.S from powerpc/libStephen Rothwell
since it is identical to mempcy.S from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
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