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* [PATCH] Let WARN_ON/WARN_ON_ONCE return the conditionHerbert Xu2006-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | Letting WARN_ON/WARN_ON_ONCE return the condition means that you could do if (WARN_ON(blah)) { handle_impossible_case } Rather than if (unlikely(blah)) { WARN_ON(1) handle_impossible_case } I checked all the newly added WARN_ON_ONCE users and none of them test the return status so we can still change it. [akpm@osdl.org: warning fix] [akpm@osdl.org: build fix] Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Standardize pxx_page macrosDave McCracken2006-09-26
| | | | | | | | | | | | | | | | | | | | | One of the changes necessary for shared page tables is to standardize the pxx_page macros. pte_page and pmd_page have always returned the struct page associated with their entry, while pte_page_kernel and pmd_page_kernel have returned the kernel virtual address. pud_page and pgd_page, on the other hand, return the kernel virtual address. Shared page tables needs pud_page and pgd_page to return the actual page structures. There are very few actual users of these functions, so it is simple to standardize their usage. Since this is basic cleanup, I am submitting these changes as a standalone patch. Per Hugh Dickins' comments about it, I am also changing the pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning. Signed-off-by: Dave McCracken <dmccr@us.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [libata] No need for all those arch libata-portmap.h headersJeff Garzik2006-09-25
| | | | | | | They all contain the same thing. Instead, have a single generic one in include/asm-generic, and permit an arch to override as needed. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge branch 'master' into upstreamJeff Garzik2006-09-24
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| * Merge git://git.infradead.org/~dwmw2/hdronelineLinus Torvalds2006-09-22
| |\ | | | | | | | | | | | | | | | | | | * git://git.infradead.org/~dwmw2/hdroneline: [HEADERS] One line per header in Kbuild files to reduce conflicts Manual (trivial) conflict resolution in include/asm-s390/Kbuild
| | * [HEADERS] One line per header in Kbuild files to reduce conflictsDavid Woodhouse2006-09-19
| | | | | | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * | [POWERPC] powerpc: fix building gdb against asm/ptrace.hArnd Bergmann2006-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ulrich Weigand found a bug with the current version of the asm-powerpc/ptrace.h that prevents building at least the SPU target version of gdb, since some ptrace opcodes are not defined. The problem seems to have originated in the merging of 32 and 64 bit versions of that file, the problem is that some opcodes are only valid on 64 bit kernels, but are also used by 32 bit programs, so they can't depends on the __powerpc64__ symbol. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Remove DISCONTIGMEM cruft from page.hMichael Ellerman2006-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This looks like cruft to me, these functions don't exist AFAICT, and I can't see that it's possible to even enable DISCONTIGMEM on powerpc anymore. CC'ing some folks who might know better, based on the who-touched-it-last principle. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Merge iSeries i/o operations with the restStephen Rothwell2006-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the io operations so that they are out of line if CONFIG_PPC_ISERIES is set and includes a firmware feature check in that case. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] EEH: enable MMIO/DMA on frozen slotLinas Vepstas2006-09-21
| | | | | | | | | | | | | | | | | | | | | | | | Add wrapper around the rtas call to enable MMIO or DMA on a frozen pci slot. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Define of_read_ulong helperPaul Mackerras2006-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are various places where we want to extract an unsigned long value from a device-tree property that can be 1 or 2 cells in length. This replaces some open-coded calculations, and one place where we assumed without checking that properties were the length we wanted, with a little of_read_ulong() helper. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] iseries: eliminate a couple of warningsStephen Rothwell2006-09-20
| | | | | | | | | | | | | | | | | | Copy and paste bug in io.h Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | [POWERPC] convert string i/o operations to CStephen Rothwell2006-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This produces essentially the same code and will make the iSeries i/o consolidation easier. The count parameter is changed to long since that will produce the same (better) code on 32 and 64 bit builds. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | [POWERPC] clean up ide io accessorsStephen Rothwell2006-09-20
| | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | [POWERPC] remove unused asm routinesStephen Rothwell2006-09-20
| | | | | | | | | | | | | | | | | | _insw, _outsw, _insl amd _outsl are all unused, so remove them. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | [POWERPC] remove unused io accessorsStephen Rothwell2006-09-20
| | | | | | | | | | | | | | | | | | | | | | | | The io accessors insw_ns, outsw_ns, insl_ns and outsl_ns are unused (except for one unnecessary use in drivers/net/3c509.c that is addressed in a previous patch) and are only defined in powerpc/ppc, so remove them. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | Merge branch 'linux-2.6'Paul Mackerras2006-09-13
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| * | [POWERPC] powerpc: Instrument Hypervisor CallsMike Kravetz2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add instrumentation for hypervisor calls on pseries. Call statistics include number of calls, wall time and cpu cycles (if available) and are made available via debugfs. Instrumentation code is behind the HCALL_STATS config option and has no impact if not enabled. Signed-off-by: Mike Kravetz <kravetz@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] powerpc: PA6T cputable entry, PVR valueOlof Johansson2006-09-13
| | | | | | | | | | | | | | | | | | | | | Introduce PWRficient PA6T cputable entries and feature bits. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] powerpc: Divorce CPU_FTR_CTRL from CPU_FTR_PPCAS_ARCH_V2_BASEOlof Johansson2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The performance monitor implementation (including CTRL register behaviour) is just included in PPC v2 as an example, it's not truly part of the base. It's actually a somewhat misleading feature, but I'll leave that be for now: The presence of the register is not what the feature bit is used for, but instead it's used to determine if it contains the runlatch bit for idle reporting of the performance monitor. For alternative implementations, the register might still exist but the bit might have different meaning (or no meaning at all). For now, split it off and don't include it in CPU_FTR_PPCAS_ARCH_V2_BASE. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | Merge branch 'merge'Paul Mackerras2006-08-31
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| * \ \ Merge branch 'merge'Paul Mackerras2006-08-25
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| * | | | [POWERPC] Add a helper for calculating RTAS "config_addr" parametersMichael Ellerman2006-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several RTAS calls take a "config_addr" parameter, which is a particular way of specifying a PCI busno, devfn and register number into a 32-bit word. Currently these are open-coded, and I'll be adding another soon, replace them with a helper that encapsulates the logic. Be more strict about masking the busno too, just in case. Booted on P5 LPAR. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Allow MPC8641 HPCN to build with CONFIG_PCI disabled too.Jon Loeliger2006-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Cleanup CPU initsOlof Johansson2006-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup CPU inits a bit more, Geoff Levand already did some earlier. * Move CPU state save to cpu_setup, since cpu_setup is only ever done on cpu 0 on 64-bit and save is never done more than once. * Rename __restore_cpu_setup to __restore_cpu_ppc970 and add function pointers to the cputable to use instead. Powermac always has 970 so no need to check there. * Rename __970_cpu_preinit to __cpu_preinit_ppc970 and check PVR before calling it instead of in it, it's too early to use cputable. * Rename pSeries_secondary_smp_init to generic_secondary_smp_init since everyone but powermac and iSeries use it. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | Merge branch 'merge'Paul Mackerras2006-08-08
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| * | | | | [POWERPC] Update lppaca offset commentsMichael Neuling2006-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update offset comments. No functional change. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [POWERPC] Implement SLB shadow bufferMichael Neuling2006-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a shadow buffer for the SLBs and regsiters it with PHYP. Only the bolted SLB entries (top 3) are shadowed. The SLB shadow buffer tells the hypervisor what the kernel needs to have in the SLB for the kernel to be able to function. The hypervisor can use this information to speed up partition context switches. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [POWERPC] Make doc comments extractableMichael Ellerman2006-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't have much in the way of doc comments, but some of those we do have don't work because they start with "/***" or "/*", not "/**" which is what kernel-doc requires. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [POWERPC] clean up pseries hcall interfacesAnton Blanchard2006-08-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our pseries hcall interfaces are out of control: plpar_hcall_norets plpar_hcall plpar_hcall_8arg_2ret plpar_hcall_4out plpar_hcall_7arg_7ret plpar_hcall_9arg_9ret Create 3 interfaces to cover all cases: plpar_hcall_norets: 7 arguments no returns plpar_hcall: 6 arguments 4 returns plpar_hcall9: 9 arguments 9 returns There are only 2 cases in the kernel that need plpar_hcall9, hopefully we can keep it that way. Pass in a buffer to stash return parameters so we avoid the &dummy1, &dummy2 madness. Signed-off-by: Anton Blanchard <anton@samba.org> -- Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | Merge branch 'merge'Paul Mackerras2006-07-31
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| * | | | | | [POWERPC] Instrument Hypervisor Calls: merge headersMike Kravetz2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move all the Hypervisor call definitions to to a single header file. Signed-off-by: Mike Kravetz <kravetz@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] Make get_property() return a const void *Jeremy Kerr2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previous changes have treated the return values of get_property as const, so now we can make the actual change to get_property(). There shouldn't be a need to cast the return values anymore. We will now get compiler warnings when property values are assigned to a non-const variable. If properties need to be updated, there's still the of_find_property function. Built for cell_defconfig, chrp32_defconfig, g5_defconfig, iseries_defconfig, maple_defconfig, pmac32_defconfig, ppc64_defconfig and pseries_defconfig. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] powermac: Constify & voidify get_property()Jeremy Kerr2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. powermac platform & macintosh driver changes. Built for pmac32_defconfig, g5_defconfig Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] cell: Constify & voidify get_property()Jeremy Kerr2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. cell platform changes. Built for cell_defconfig Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] Constify & voidify get_property()Jeremy Kerr2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. powerpc core changes. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | Merge branch 'mpe'Stephen Rothwell2006-07-14
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| | * | | | | | [POWERPC] iseries: Move iommu_table_cb into platforms/iseriesMichael Ellerman2006-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Although we pass the address of an iommu_table_cb to HvCallXm_getTceTableParms, we don't actually need the structure definition anywhere except in the iseries iommu code, so move the struct in there. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | | | | [POWERPC] iseries: Move ItLpNaca into platforms/iseriesMichael Ellerman2006-07-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move ItLpNaca into platforms/iseries now that it's not used elsewhere. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | | | | [POWERPC] iseries: Make HvLpConfig_get(Primary)LpIndex functionsMichael Ellerman2006-07-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | HvLpConfig_get(Primary)LpIndex are currently static inlines that return fields from the itLpNaca, if we make them real functions we can make the itLpNaca private to iSeries. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | | | | [POWERPC] iseries: Make ItExtVpdPanel private to iSeriesMichael Ellerman2006-07-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No one outside platforms/iseries needs ItExtVpdPanel anymore, so move it in there. It used to be needed by lparcfg, and so was exported, but isn't needed anymore, so unexport it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | | | | [POWERPC] iseries: Move e2a()/strne2a() into their only callerMichael Ellerman2006-07-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | | | | Merge branch 'hvc_iseries'Stephen Rothwell2006-07-13
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| | * | | | | | | [POWERPC] iseries: A new iSeries consoleStephen Rothwell2006-07-13
| | |/ / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver uses the hvc_console.c infrastructure that is used by the pSeries virtual and RTAS consoles. This will allow us to make viocons.c obsolete and is another step along the way to a combined kernel (as viocons could not coexist with CONFIG_VT). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * / / / / / / [POWERPC] iseries: Remove unnecessary include of iseries/hv_lp_event.hStephen Rothwell2006-07-13
| |/ / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also remove unnecessary reference to struct HvLpEvent. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| * | | | | | [POWERPC] Use const qualifiers for prom parsing utilitesJeremy Kerr2006-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The of_bus callbacks map and get_flags can be constified, as they don't alter the range or addr arguments. of_dump_addr and of_read_addr can also be constified. Built for 32- and 64-bit powerpc Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] Add briq support to CHRPBenjamin Herrenschmidt2006-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The support for Briq machines has been floating around as patches for ages. This cleans it up and adds it once for all. Some of this is based on initial code provided by Karsten Jeppesen <karsten@jeppesens.com> and mostly rewritten from scratch by me. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | | | | | Merge branch 'master' into upstreamJeff Garzik2006-09-19
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| * | | | | | [POWERPC] Fix MMIO ops to provide expected barrier behaviourPaul Mackerras2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the writeX family of functions to have a sync instruction before the MMIO store rather than after, because the generally expected behaviour is that the device receiving the MMIO store can be guaranteed to see the effects of any preceding writes to normal memory. To preserve ordering between writeX and readX, and to preserve ordering between preceding stores and the readX, the readX family of functions have had an sync added before the load. Although writeX followed by spin_unlock is not officially guaranteed to keep the writeX inside the spin-locked region unless an mmiowb() is used, there are currently drivers that depend on the previous behaviour on powerpc, which was that the mmiowb wasn't actually required. Therefore we have a per-cpu flag that is set by writeX, cleared by __raw_spin_lock and mmiowb, and tested by __raw_spin_unlock. If it is set, __raw_spin_unlock does a sync and clears it. This changes both 32-bit and 64-bit readX/writeX. 32-bit already has a sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus doesn't need the per-cpu flag. Tested on G5 (PPC970) and POWER5. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [POWERPC] kdump: Support kernels having 64k page size.Sachin P. Sant2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is required to generate proper core files using kdump on ppc64. Create a backup region of 64K size irrespective of the PAGE SIZE. At present 32K was used as backup size. In the case of 64K page size, second PT_LOAD segments starts at 32K and the first one is not page aligned. __ioremap() (crash_dump.c) fails if pfn = 0 which is the case for the second PT_LOAD segment. This is not an issue for 4K page size because the the first page (32K backup) is copied to second kernel memory and thus referencing with the second kernel pfn. Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>