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2008-03-26[POWERPC] Add 'model: ...' line to common show_cpuinfo()Marian Balakowicz
Print out 'model' property of '/' node as a machine name in generic show_cpuinfo() routine. Signed-off-by: Marian Balakowicz <m8@semihalf.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-13Merge branch 'linux-2.6'Paul Mackerras
2008-03-13[POWERPC] Export empty_zero_pageTheodore Ts'o
Once again, this time with feeling.... - Ted >From c91cfaabc17f8a53807a2f31f067a732e34a1550 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o <tytso@mit.edu> Date: Wed, 12 Mar 2008 11:50:39 -0400 Subject: Export empty_zero_page The empty_zero_page symbol is exported by most other architectures (s390, ia64, x86, um), and an upcoming ext4 patch needs it because ZERO_PAGE() references empty_zero_page, and we need it to zero out an unitialized extents in ext4 files. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-13[POWERPC] Fix bogus test for unassigned PCI resourcesBenjamin Herrenschmidt
A bogus test for unassigned resources that came from our 32-bit PCI code ended up being "merged" by my previous patch series, breaking some 64-bit setups where devices have legal resources ending at 0xffffffff. This fixes it by completely changing the test. We now test for res->start == 0, as the generic code expects, and we also only do so on platforms that don't have the PPC_PCI_PROBE_ONLY flag set, as there are cases of pSeries and iSeries where it could be a valid value and those can't reassign devices. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-13[POWERPC] Add __ucmpdi2 for 64-bit comparisons in 32-bit kernelsPaul Mackerras
Some drivers (such as V4L2) have code that causes gcc to generate calls to __ucmpdi2 when compiling for 32-bit powerpc, which results in either a link-time error or a module that can't be loaded, as we don't currently have a __ucmpdi2. This adds one so these drivers can be used. Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-07[POWERPC] 8xx: fix swapVitaly Bordug
This makes swap routines operate correctly on the ppc_8xx based machines. Code has been revalidated on mpc885ads (8M sdram) with recent kernel. Based on patch from Yuri Tikhonov <yur@emcraft.com> to do the same on arch/ppc instance. Recent kernel's size makes swap feature very important on low-memory platforms, those are actually non-operable without it. Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-26[POWERPC] Remove dead code at KernelAltiVecDale Farnsworth
This code isn't referenced anywhere, so remove it. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-26Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/lmb-2.6Paul Mackerras
2008-02-20[POWERPC] Fix dt_mem_next_cell() to read the full addressBecky Bruce
dt_mem_next_cell() currently does of_read_ulong(). This does not allow for the case where #size-cells and/or #address-cells = 2 on a 32-bit system, as it will end up reading 32 bits instead of the expected 64. Change it to use of_read_number instead and always return a u64. Signed-off-by: Becky Bruce <becky.bruce at freescale.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20[POWERPC] Kill sparse warnings in kprobesAnanth N Mavinakayanahalli
Fix sparse warnings in powerpc kprobes: CHECK arch/powerpc/kernel/kprobes.c arch/powerpc/kernel/kprobes.c:277:6: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static? arch/powerpc/kernel/kprobes.c:287:15: warning: symbol 'trampoline_probe_handler' was not declared. Should it be static? arch/powerpc/kernel/kprobes.c:525:16: warning: symbol 'jprobe_return_end' was not declared. Should it be static? Fix along the same lines as http://lkml.org/lkml/2008/2/13/642 Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14[POWERPC] vdso_do_func_patch{32,64}() must be __initAdrian Bunk
This fixes the following section mismatches: <-- snip --> ... WARNING: vmlinux.o(.text+0xe49c): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64() WARNING: vmlinux.o(.text+0xe4d0): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64() WARNING: vmlinux.o(.text+0xe56c): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32() WARNING: vmlinux.o(.text+0xe5a0): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32() ... <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14[POWERPC] Remove generated files on make cleanKumar Gala
vmlinux.lds and dtc-parser.tab.h get created but never cleaned up. Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14[POWERPC] Fix DEBUG_PREEMPT warning when warningHugh Dickins
The powerpc show_regs prints CPU using smp_processor_id: change that to raw_smp_processor_id, so that when it's showing a WARN_ON backtrace without preemption disabled, DEBUG_PREEMPT doesn't mess up that warning with its own. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-13[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-07Fix compilation of powerpc asm-offsets.c with old gccTony Breeds
Commit ad7f71674ad7c3c4467e48f6ab9e85516dae2720 ("[POWERPC] Use a sensible default for clock_getres() in the VDSO") corrected the clock resolution reported by the VDSO clock_getres() but introduced another problem in that older versions of gcc (gcc-4.0 and earlier) fail to compile the new code in arch/powerpc/kernel/asm-offsets.c. This fixes it by introducing a new MONOTONIC_RES_NSEC define in the generic code which is equivalent to KTIME_MONOTONIC_RES but is just an integer constant, not a ktime union. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Merge branch 'for-2.6.25' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits) [POWERPC] Add SPE registers to core dumps [POWERPC] Use regset code for compat PTRACE_*REGS* calls [POWERPC] Use generic compat_sys_ptrace [POWERPC] Use generic compat_ptrace_request [POWERPC] Use generic ptrace peekdata/pokedata [POWERPC] Use regset code for PTRACE_*REGS* requests [POWERPC] Switch to generic compat_binfmt_elf code [POWERPC] Switch to using user_regset-based core dumps [POWERPC] Add user_regset compat support [POWERPC] Add user_regset_view definitions [POWERPC] Use user_regset accessors for GPRs [POWERPC] ptrace accessors for special regs MSR and TRAP [POWERPC] Use user_regset accessors for SPE regs [POWERPC] Use user_regset accessors for altivec regs [POWERPC] Use user_regset accessors for FP regs [POWERPC] mpc52xx: fix compile error introduce when rebasing patch [POWERPC] 4xx: PCIe indirect DCR spinlock fix. [POWERPC] Add missing native dcr dcr_ind_lock spinlock [POWERPC] 4xx: Fix offset value on Warp board [POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry ...
2008-02-07[POWERPC] Add SPE registers to core dumpsRoland McGrath
This makes the SPE register data appear in ELF core dumps, using the new n_type value NT_PPC_SPE (0x101). This new note type is not used by any consumers of core files yet, but support can be added. I don't even have any hardware with SPE capabilities, so I've never seen such a note. But this demonstrates how simple it is to export register information in core dumps when the user_regset style is used for the low-level code. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use regset code for compat PTRACE_*REGS* callsRoland McGrath
This cleans up the 32-bit ptrace syscall support to use user_regset calls to get at the register data for PTRACE_*REGS* calls. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use generic compat_sys_ptraceRoland McGrath
This replaces powerpc's compat_sys_ptrace with a compat_arch_ptrace and enables the new generic definition of compat_sys_ptrace instead. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use generic compat_ptrace_requestRoland McGrath
This removes some duplicated code by calling the new generic compat_ptrace_request from powerpc's compat_sys_ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use generic ptrace peekdata/pokedataRoland McGrath
Now that ptrace_request handles these, we can drop some more boilerplate. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use regset code for PTRACE_*REGS* requestsRoland McGrath
This replaces all the code for powerpc PTRACE_*REGS* requests with simple calls to copy_regset_from_user and copy_regset_to_user. All the ptrace formats are either the whole corresponding user_regset format (core dump format) or a leading subset of it, so we can get rid of all the remaining embedded knowledge of both those layouts and of the internal data structures they correspond to. Only the user_regset accessors need to implement that. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Switch to generic compat_binfmt_elf codeRoland McGrath
This switches the CONFIG_PPC64 support for 32-bit ELF to use the generic fs/compat_binfmt_elf.c implementation instead of our own binfmt_elf32.c. Since so much is the same between 32/64, there is only one macro we have to define to make the generic support work out of the box. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Add user_regset compat supportRoland McGrath
This extends task_user_regset_view CONFIG_PPC64 with support for the 32-bit view of register state, compatible with what a CONFIG_PPC32 kernel provides. This will enable generic machine-independent code to access user-mode threads' registers for debugging and dumping. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Add user_regset_view definitionsRoland McGrath
This provides the task_user_regset_view entry point and support for all the native-mode (64 on CONFIG_PPC64, 32 on CONFIG_PPC32) thread register state. This will enable generic machine-independent code to access user-mode threads' registers for debugging and dumping. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use user_regset accessors for GPRsRoland McGrath
This implements user_regset-style accessors for the powerpc general registers. In the future these functions will be the only place that needs to understand the user_regset layout (core dump format) and how it maps to the internal representation of user thread state. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] ptrace accessors for special regs MSR and TRAPRoland McGrath
This isolates the ptrace code for the special-case registers msr and trap from the ptrace-layout dispatch code. This should inline away completely. It cleanly separates the low-level machine magic that has to be done for deep reasons, from the superficial details of the ptrace interface. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use user_regset accessors for SPE regsRoland McGrath
This implements user_regset-style accessors for the powerpc SPE data, and rewrites the existing ptrace code in terms of those calls. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use user_regset accessors for altivec regsRoland McGrath
This implements user_regset-style accessors for the powerpc Altivec data, and rewrites the existing ptrace code in terms of those calls. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Use user_regset accessors for FP regsRoland McGrath
This implements user_regset-style accessors for the powerpc FPU data, and rewrites the existing ptrace code in terms of those calls. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07[POWERPC] Fix compilation for CONFIG_DEBUGGER=n and CONFIG_KEXEC=yOlof Johansson
Looks like "[POWERPC] kdump shutdown hook support" broke builds when CONFIG_DEBUGGER=n and CONFIG_KEXEC=y, such as in g5_defconfig: arch/powerpc/kernel/crash.c: In function 'default_machine_crash_shutdown': arch/powerpc/kernel/crash.c:388: error: '__debugger_fault_handler' undeclared (first use in this function) arch/powerpc/kernel/crash.c:388: error: (Each undeclared identifier is reported only once arch/powerpc/kernel/crash.c:388: error: for each function it appears in.) Move the debugger hooks to under CONFIG_DEBUGGER || CONFIG_KEXEC, since that's when the crash code is enabled. (I should have caught this with my build-script pre-merge, my bad. :( ) Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06taskstats scaled time cleanupMichael Neuling
This moves the ability to scale cputime into generic code. This allows us to fix the issue in kernel/timer.c (noticed by Balbir) where we could only add an unscaled value to the scaled utime/stime. This adds a cputime_to_scaled function. As before, the POWERPC version does the scaling based on the last SPURR/PURR ratio calculated. The generic and s390 (only other arch to implement asm/cputime.h) versions are both NOPs. Also moves the SPURR and PURR snapshots closer. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: Jay Lan <jlan@engr.sgi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06Merge branch 'for-2.6.25' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.25
2008-02-05[POWERPC} Add oprofile support for e300Andy Fleming
The e300 c3 and c4 variants support hardware performance monitor counters which are identical to those found in the e500. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05[POWERPC] Made FSL Book-E PMC support more genericAndy Fleming
Some of the more recent e300 cores have the same performance monitor implementation as the e500. e300 isn't book-e, so the name isn't really appropriate. In preparation for e300 support, rename a bunch of fsl_booke things to say fsl_emb (Freescale Embedded Performance Monitors). Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-06[POWERPC] Fix legacy serial search for opb bus portsMichael Ellerman
The patch to legacy_serial.c (1a7507c7da2df6856e085e0fbb0c9ea8c12ac4e, Reduce code duplication in legacy_serial, add UART parent types) changed the semantics for opb ports from type = "opb" || compatible = "ibm,opb" to type = "opb" && compatible = "ibm,opb". The result is serial ports on our QS21s (Cell blades) don't get found, and for some reason the machine doesn't boot at all - possibly it's panicking due to lack of a console? The fix is to add two entries to the of_device_id table, one that looks for type = "opb" and the other compatible = "ibm,opb". Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06[POWERPC] Use a sensible default for clock_getres() in the VDSOTony Breeds
This ensures that the syscall and the (fast) vdso versions of clock_getres() will return the same resolution. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06[POWERPC] iSeries: Fix section mismatch in viodsasdStephen Rothwell
WARNING: vmlinux.o(.text+0x3017c): Section mismatch in reference from the function .vio_create_viodasd() to the function .devinit.text:.vio_register_device_node() Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-05iommu sg: powerpc: remove DMA 4GB boundary protectionFUJITA Tomonori
Previously, during initialization of the IOMMU tables, the last entry at each 4GB boundary is marked as used since there are many adapters which cannot handle DMAing across any 4GB boundary. The IOMMU doesn't allocate a memory area spanning LLD's segment boundary anymore. The segment boundary of devices are set to 4GB by default. So we can remove 4GB boundary protection now. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05iommu sg: powerpc: convert iommu to use the IOMMU helperFUJITA Tomonori
This patch converts PPC's IOMMU to use the IOMMU helper functions. The IOMMU doesn't allocate a memory area spanning LLD's segment boundary anymore. iseries_hv_alloc and iseries_hv_map don't have proper device struct. 4GB boundary is used for them. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05iommu sg merging: ppc: make iommu respect the segment size limitsFUJITA Tomonori
This patch makes iommu respect segment size limits when merging sg lists. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-31Merge branch 'linux-2.6'Paul Mackerras
2008-01-31Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xxPaul Mackerras
2008-01-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: PPC: Fix powerpc vio_find_name to not use devices_subsys Driver core: add bus_find_device_by_name function Module: check to see if we have a built in module with the same name x86: fix runtime error in arch/x86/kernel/cpu/mcheck/mce_amd_64.c Driver core: Fix up build when CONFIG_BLOCK=N
2008-01-30powerpc: ptrace generic resumeRoland McGrath
This removes the handling for PTRACE_CONT et al from the powerpc ptrace code, so it uses the new generic code via ptrace_request. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30powerpc: arch_has_single_stepRoland McGrath
This defines the new standard arch_has_single_step macro. It makes the existing set_single_step and clear_single_step entry points global, and renames them to the new standard names user_enable_single_step and user_disable_single_step, respectively. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-28remove __attribute_used__Adrian Bunk
Remove the deprecated __attribute_used__. [Introduce __section in a few places to silence checkpatch /sam] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28all archs: consolidate init and exit sections in vmlinux.lds.hSam Ravnborg
This patch consolidate all definitions of .init.text, .init.data and .exit.text, .exit.data section definitions in the generic vmlinux.lds.h. This is a preparational patch - alone it does not buy us much good. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28[POWERPC] 85xx: Only invalidate TLB0 and TLB1Kumar Gala
All current 85xx/e500 implementations only have two TLB arrays. We are wasting cycles by invalidating TLB2 and TLB3. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28[POWERPC] Reduce code duplication in legacy_serial, add UART parent typesPaul Gortmaker
The legacy_serial was treating each UART parent in a separate code block. Rather than continue this trend for the new parent IDs, this condenses all (soc, tsi, opb, plus two more new types) into one of_device_id array. The new types are wrs,epld-localbus for the Wind River sbc8560, and a more generic "simple-bus" as requested by Scott Wood. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>