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* [POWERPC] Fix pci_setup_phb_io_dynamic for pci_iomapArnd Bergmann2007-06-071-1/+1
| | | | | | | | | | | | | We had a problem on a system with only dynamically allocated PCI buses (using of_pci_phb_driver) in combination with libata. This setup ended up having no "primary" phb, which means that pci_io_base never got initialized and all IO port numbers are 64 bit numbers, which is larger than the PIO_MASK limit. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Compare irq numbers with NO_IRQ not IRQ_NONEMichael Ellerman2007-06-021-3/+3
| | | | | | | | | | | | | There is a thinko in the irq code, it uses IRQ_NONE to indicate no irq, whereas it should be using NO_IRQ. IRQ_NONE is returned from irq handlers to say "not handled". As it happens they currently have the same value (0), so this is just for future proof-ness. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix ppc32 single-stepping out of syscallsBenjamin Herrenschmidt2007-06-021-0/+2
| | | | | | | | | | | | | The ppc32 kernel didn't properly set/clear the TIF_SINGLESTEP flag, causing return from syscalls to not SIGTRAP, thus executing one more instruction before stopping again. This fixes it. The ptrace code is a bit of a mess, and is overdue for at least a -proper- 32/64 bits split and possibly more cleanups but this minimum fix should be ok for 2.6.22 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Update documentation for of_find_node_by_type()Michael Ellerman2007-06-021-5/+6
| | | | | | | | | | The documentation for of_find_node_by_type() incorrectly refers to the "name" parameter - it should be "type". Also the behaviour when from == NULL is not really documented, fix that. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix powerpc vmlinux.lds.SBenjamin Herrenschmidt2007-05-221-1/+0
| | | | | | | | | | | | | | | Sam's recent change in 7664709b44a13e2e0b545e2dd8e7b8797a1748dc broke things for us because we ended up with *(.text.*) before *(.text), whereas previously *(.text) was first. This was important because the start of the text section contains the kernel entry point. In fact, we don't need that *(.text.*) thing anymore and it incorrectly matched .text.init.refok, thus putting it before .text. .. ouch ! Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix typo: MMCR0_PMA0 != MMCR0_PMAOAnton Blanchard2007-05-221-3/+3
| | | | | | | | | | | | | | | | | pmc.c has: #ifndef MMCR0_PMA0 #define MMCR0_PMA0 0 This one took a while to find. Unfortunately its the wrong define (number 0 vs letter O). Its probably worth removing this override, since if our includes get screwed up we will have the same (hard to debug) failure. Fix it simply for now, so that we can backport to stable. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add missing pmc_type fields in cpu_tableAnton Blanchard2007-05-221-0/+4
| | | | | | | | | A number of cpu_table entries were missing the pmc_type field, which means that the sysfs entries for the performance monitor counters don't get created. This adds them. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix smp_call_function to be preempt-safeHugh Dickins2007-05-221-16/+18
| | | | | | | | | | | | smp_call_function_map() was not safe against preemption to another cpu: its test for removing self from map was outside the spinlock. Rearrange it a little to fix that. smp_call_function_single() was also wrong: now get_cpu() before excluding self, as other architectures do. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* all-archs: consolidate .data section definition in asm-genericSam Ravnborg2007-05-191-1/+1
| | | | | | | With this consolidation we can now modify the .data section definition in one spot for all archs. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* all-archs: consolidate .text section definition in asm-genericSam Ravnborg2007-05-191-1/+2
| | | | | | Move definition of .text section to asm-generic. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* [POWERPC] Fix ppc_rtas_progress_show()Segher Boessenkool2007-05-171-1/+1
| | | | | | | | | | | | | Fixes the warning arch/powerpc/kernel/rtas-proc.c: In function 'ppc_rtas_progress_show': arch/powerpc/kernel/rtas-proc.c:382: warning: the address of 'progress_led' will always evaluate as 'true' by fixing the code to do what it presumably is meant to do. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Make sure device node type/name is not NULL on hot-added nodesBenjamin Herrenschmidt2007-05-171-0/+5
| | | | | | | | | | | Our device-tree unflattening code makes sure the name and type fields of a device-node are not NULL. However, the code for dynamically adding devices nodes which is used for pSeries hotplug for example didn't do it, potentially causing crashes in some code that assume it can always do things like strcmp on those. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix IO space on PCI buses created from of_platformBenjamin Herrenschmidt2007-05-172-5/+28
| | | | | | | | | | | | | | | | This changes the way of_platform_pci creates PCI host bridges such that it uses request_phb_iospace() for mapping the IO ports, instead of using the dynamic hotplug stuff. That guarantees the IO space stays within the 2GB limit and thus doesn't break half of the legacy drivers around. Fixes a couple of warnings due to missing IO space while at it. This patch is a temporary workaround for 2.6.22 before a more complete rewrite of IO mappings is merged in 2.6.23 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix COMMON symbol warningsKumar Gala2007-05-171-3/+15
| | | | | | | | | | | | | | | | | We get the following warnings in various ARCH=powerpc builds: WARNING: "ee_restarts" [arch/powerpc/kernel/built-in] is COMMON symbol WARNING: "fee_restarts" [arch/powerpc/kernel/built-in] is COMMON symbol WARNING: "htab_hash_searches" [arch/powerpc/mm/built-in] is COMMON symbol WARNING: "next_slot" [arch/powerpc/mm/built-in] is COMMON symbol WARNING: "mmu_hash_lock" [arch/powerpc/mm/built-in] is COMMON symbol WARNING: "primary_pteg_full" [arch/powerpc/mm/built-in] is COMMON symbol WARNING: "global_dbcr0" [arch/powerpc/kernel/built-in] is COMMON symbol Switch to moving local symbols (except mmu_hash_lock which is global) and space directive instead. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Remove CPU_FTR_NEED_COHERENT for 7448.James.Yang2007-05-171-1/+1
| | | | | | | | | Remove CPU_FTR_NEED_COHERENT for MPC7448 (and single-core MPC86xx). This prevents needlessly setting M=1 when not SMP. Signed-off-by: James.Yang <James.Yang@freescale.com> Acked-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Check cache coherency of kernel vs firmwareDale Farnsworth2007-05-121-0/+41
| | | | | | | | | check_cache_coherency() verifies that the cache coherency setting of the kernel (CONFIG_NOT_COHERENT_CACHE) matches that left by the firmware, as indicated by coherency-off device tree property. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Don't complain if size-cells == 0 in prom_parse()Kim Phillips2007-05-121-1/+1
| | | | | | | | | | | | | An mdio bus scan was added with ucc_geth phylib migration patches, now machines complain on boot, saying: prom_parse: Bad cell count for /qe@e0100000/mdio@2120/ethernet-phy@00 prom_parse: Bad cell count for /qe@e0100000/mdio@2120/ethernet-phy@01 since size-cells can indeed be 0, this patch fixes the check. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Simplify smp_space_timerswill schmidt2007-05-121-17/+2
| | | | | | | | | | | | | | | | | | | Greatly simplify the function smp_space_timers. The stolen time calculation (per comment within the code) doesn't need the half-jiffy stagger any more. There isn't an issue with bouncing off global locks, so we really shouldn't need any sort of staggering at all. However, the last_jiffy value still needs to be set. This removes the extra stagger logic, and just sets the values. This change should benefit applications that rely on barrier synchronization, and will help cut down OS jitter. Boot tested across the board (G5,power3,power4,power5,970mp blade). Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'audit.b38' of ↵Linus Torvalds2007-05-112-0/+22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b38' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] Abnormal End of Processes [PATCH] match audit name data [PATCH] complete message queue auditing [PATCH] audit inode for all xattr syscalls [PATCH] initialize name osid [PATCH] audit signal recipients [PATCH] add SIGNAL syscall class (v3) [PATCH] auditing ptrace
| * [PATCH] audit signal recipientsAmy Griffis2007-05-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | When auditing syscalls that send signals, log the pid and security context for each target process. Optimize the data collection by adding a counter for signal-related rules, and avoiding allocating an aux struct unless we have more than one target process. For process groups, collect pid/context data in blocks of 16. Move the audit_signal_info() hook up in check_kill_permission() so we audit attempts where permission is denied. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] add SIGNAL syscall class (v3)Amy Griffis2007-05-112-0/+13
| | | | | | | | | | | | | | Add a syscall class for sending signals. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | powerpc: fixup hard_irq_disable semanticsBenjamin Herrenschmidt2007-05-112-5/+1
|/ | | | | | | | | | | | | | | | | | | | This patch renames the raw hard_irq_{enable,disable} into __hard_irq_{enable,disable} and introduces a higher level hard_irq_disable() function that can be used by any code to enforce that IRQs are fully disabled, not only lazy disabled. The difference with the __ versions is that it will update some per-processor fields so that the kernel keeps track and properly re-enables them in the next local_irq_disable(); This prepares powerpc for my next patch that introduces hard_irq_disable() generically. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [POWERPC] Split initrd logic out of early_init_dt_scan_chosen() to fix warningMichael Ellerman2007-05-101-16/+31
| | | | | | | | | | | | | If CONFIG_BLK_DEV_INITRD is not defined the prop variable in early_init_dt_scan_chosen() is unused, causing a compiler warning. So split the initrd logic into a separate function, allowing us to declare prop only when we need it. Built for both cases and booted with an initrd. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix incorrect calculation of I/O window addressesPaul Mackerras2007-05-101-24/+13
| | | | | | | | | | | | My patch "Cope with PCI host bridge I/O window not starting at 0" introduced a bug in the calculation of the virtual addresses for the I/O windows of PCI host bridges other than the first, because it didn't account for the fact that hose->io_resource gets offset so that it reflects the range of global I/O port numbers assigned to the bridge. This fixes it and simplifies get_bus_io_range() in the process. Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'master' of ↵Linus Torvalds2007-05-092-6/+13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Further fixes for the removal of 4level-fixup hack from ppc32 [POWERPC] EEH: log all PCI-X and PCI-E AER registers [POWERPC] EEH: capture and log pci state on error [POWERPC] EEH: Split up long error msg [POWERPC] EEH: log error only after driver notification. [POWERPC] fsl_soc: Make mac_addr const in fs_enet_of_init(). [POWERPC] Don't use SLAB/SLUB for PTE pages [POWERPC] Spufs support for 64K LS mappings on 4K kernels [POWERPC] Add ability to 4K kernel to hash in 64K pages [POWERPC] Introduce address space "slices" [POWERPC] Small fixes & cleanups in segment page size demotion [POWERPC] iSeries: Make HVC_ISERIES the default [POWERPC] iSeries: suppress build warning in lparmap.c [POWERPC] Mark pages that don't exist as nosave [POWERPC] swsusp: Introduce register_nosave_region_late
| * [POWERPC] Introduce address space "slices"Benjamin Herrenschmidt2007-05-091-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The basic issue is to be able to do what hugetlbfs does but with different page sizes for some other special filesystems; more specifically, my need is: - Huge pages - SPE local store mappings using 64K pages on a 4K base page size kernel on Cell - Some special 4K segments in 64K-page kernels for mapping a dodgy type of powerpc-specific infiniband hardware that requires 4K MMU mappings for various reasons I won't explain here. The main issues are: - To maintain/keep track of the page size per "segment" (as we can only have one page size per segment on powerpc, which are 256MB divisions of the address space). - To make sure special mappings stay within their allotted "segments" (including MAP_FIXED crap) - To make sure everybody else doesn't mmap/brk/grow_stack into a "segment" that is used for a special mapping Some of the necessary mechanisms to handle that were present in the hugetlbfs code, but mostly in ways not suitable for anything else. The patch relies on some changes to the generic get_unmapped_area() that just got merged. It still hijacks hugetlb callbacks here or there as the generic code hasn't been entirely cleaned up yet but that shouldn't be a problem. So what is a slice ? Well, I re-used the mechanism used formerly by our hugetlbfs implementation which divides the address space in "meta-segments" which I called "slices". The division is done using 256MB slices below 4G, and 1T slices above. Thus the address space is divided currently into 16 "low" slices and 16 "high" slices. (Special case: high slice 0 is the area between 4G and 1T). Doing so simplifies significantly the tracking of segments and avoids having to keep track of all the 256MB segments in the address space. While I used the "concepts" of hugetlbfs, I mostly re-implemented everything in a more generic way and "ported" hugetlbfs to it. Slices can have an associated page size, which is encoded in the mmu context and used by the SLB miss handler to set the segment sizes. The hash code currently doesn't care, it has a specific check for hugepages, though I might add a mechanism to provide per-slice hash mapping functions in the future. The slice code provide a pair of "generic" get_unmapped_area() (bottomup and topdown) functions that should work with any slice size. There is some trickiness here so I would appreciate people to have a look at the implementation of these and let me know if I got something wrong. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] iSeries: suppress build warning in lparmap.cStephen Rothwell2007-05-091-1/+2
| | | | | | | | | | | | | | | | | | | | lparmap.c: Assembler messages: lparmap.c:51: Warning: ignoring changed section attributes for .text Idea from Segher Boessenkool. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | rename thread_info to stackRoman Zippel2007-05-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> 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> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Add suspend-related notifications for CPU hotplugRafael J. Wysocki2007-05-091-0/+2
|/ | | | | | | | | | | | | | | | | | | | | Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵Linus Torvalds2007-05-0824-116/+521
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (77 commits) [POWERPC] Abolish powerpc_flash_init() [POWERPC] Early serial debug support for PPC44x [POWERPC] Support for the Ebony 440GP reference board in arch/powerpc [POWERPC] Add device tree for Ebony [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for now [POWERPC] MPIC U3/U4 MSI backend [POWERPC] MPIC MSI allocator [POWERPC] Enable MSI mappings for MPIC [POWERPC] Tell Phyp we support MSI [POWERPC] RTAS MSI implementation [POWERPC] PowerPC MSI infrastructure [POWERPC] Rip out the existing powerpc msi stubs [POWERPC] Remove use of 4level-fixup.h for ppc32 [POWERPC] Add powerpc PCI-E reset API implementation [POWERPC] Holly bootwrapper [POWERPC] Holly DTS [POWERPC] Holly defconfig [POWERPC] Add support for 750CL Holly board [POWERPC] Generalize tsi108 PCI setup [POWERPC] Generalize tsi108 PHY types ... Fixed conflict in include/asm-powerpc/kdebug.h manually Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * [POWERPC] Early serial debug support for PPC44xDavid Gibson2007-05-084-22/+39
| | | | | | | | | | | | | | | | | | | | This adds support for early serial debugging via the built in port on IBM/AMCC PowerPC 44x CPUs. It uses a bolted TLB entry in address space 1 for the UART's mapping, allowing robust debugging both before and after the initialization of the MMU. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for nowDavid Gibson2007-05-081-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prepares for Ebony/440 support by creating an arch/powerpc/platforms/44x directory. It is populated with a single misc_44x.S file, into which is moved the 44x specific reset code from head_44x.S (on the grounds that we should really stop clogging up the head_* files with random asm helper routines). At the same time, we disable the (empty save Kconfig and Makefile) arch/powerpc/platforms/4xx directory from the arch/powerpc/platforms Makefile. Contrary to the comment in arch/powerpc/platforms/4xx/Makefile, attempting to build such an empty Makefile will fail, thus breaking compile for the 44x platforms we're about to add. It can go back in once we start porting some of the 40x platforms (and thus it becomes non-empty). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Tell Phyp we support MSIMichael Ellerman2007-05-081-1/+7
| | | | | | | | | | | | | | | | Tell Phyp we support MSI via the client architecture support mechanism. Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] PowerPC MSI infrastructureMichael Ellerman2007-05-082-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | This provides the architecture specific hooks to support MSI on powerpc. We implement the newly added arch_setup_msi_irqs() and arch_teardown_msi_irqs(), and then delegate to ppc_md routines. Platforms that don't implement MSI will leave the ppc_md calls blank, arch_msi_check_device() will detect this and return ENOSYS. Drivers should detect this error and continue to use LSI. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Rip out the existing powerpc msi stubsMichael Ellerman2007-05-081-27/+0
| | | | | | | | | | | | | | | | Rip out the existing powerpc msi stubs. These were the start of an implementation based on ppc_md calls, but were never used in mainline. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * Merge branch 'linux-2.6'Paul Mackerras2007-05-087-12/+33
| |\
| * | [POWERPC] Add __init annotations to reserve_mem() and stabs_alloc()Michael Ellerman2007-05-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | reserve_mem() and stabs_alloc() are both called only from other __init routines, so can be marked __init. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Cope with PCI host bridge I/O window not starting at 0Paul Mackerras2007-05-081-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently our code to set up the data structures for a PCI host bridge and create the mapping for its I/O window assumes that the window starts at I/O port 0 on the PCI side. If this is not true, we can end up with I/O port numbers in the resources for PCI devices which will cause an oops if a driver tries to access them via inb/outb etc., because there is no mapping for the corresponding addresses. Normally the I/O window starts at 0, but there are some situations on partitioned machines with a hypervisor where the window may not start at 0. This fixes the problem by allocating space for the range from 0 to the end of the I/O window. That is, hose->io_base_virt contains the virtual address for I/O port 0 on the PCI bus, and thus the assumption that hose->io_base_virt - pci_io_base is the offset between the "global" I/O port numbers (those in the PCI device resources) and the I/O port numbers on the PCI bus is maintained. For PCI host bridges that are present at boot, we only map the portion of that range that correspond to the bridge's I/O window. For bridges added after boot we ioremap the range from 0 to the end of the I/O window, for now; in fact hot-added bridges should be using reserve_phb_iospace() and __ioremap_explicit (so they get sensible global port numbers), but we don't have the infrastructure yet to do that (basically a free_phb_iospace() routine plus appropriate locking). Interestingly, this makes the two arms of the if statement in get_bus_io_range do almost exactly the same thing; that function could now be simplified in a further patch. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Set efika's device_type to "soc"Domen Puncer2007-05-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Device type should be "soc" (as in lite5200.dts), compatible is already set to "mpc5200". Signed-off-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Export of_device_get_modaliasSylvain Munaut2007-05-071-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Apparently other parts of the kernel need to know the modalias internally (like the sysfs code in macintosh driver). To avoid consistency issues, we export this code and use it everywhere it's needed rather than repeat it ... Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] powermac: Suspend to disk on G5Johannes Berg2007-05-076-3/+268
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Powermac G5 suspend to disk implementation. The code is platform agnostic but only tested on powermac, no other 64-bit powerpc machines. Because nvidiafb still breaks suspend I have marked it EXPERIMENTAL on powermac and because I can't test it and some lowlevel code will need changes it is BROKEN on all other 64-bit platforms. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Rename device_is_compatible to of_device_is_compatibleStephen Rothwell2007-05-073-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for consistency with other Open Firmware interfaces (and Sparc). This is just a straight replacement. This leaves the compatibility define in place. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] powermac: Support G5 CPU hotplugJohannes Berg2007-05-071-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows "hotplugging" of CPUs on G5 machines. CPUs that are disabled are put into an idle loop with the decrementer frequency set to minimum. To wake them up again we kick them just like when bringing them up. To stop those CPUs from messing with any global state we stop them from entering the timer interrupt. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Add smp_call_function_map and smp_call_function_singlewill schmidt2007-05-071-21/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new function named smp_call_function_single(). This matches a generic prototype from include/linux/smp.h. Add a function smp_call_function_map(). This is, for the most part, a rename of smp_call_function, with some added cpumask support. smp_call_function and smp_call_function_single call into smp_call_function_map. Lightly tested on 970mp (blade), power4 and power5. Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> cc: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Change topology_init() to a subsys_initcallKevin Corry2007-05-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Change the powerpc version of topology_init() from an __initcall to a subsys_initcall to match all other architectures. Signed-off-by: Kevin Corry <kevcorry@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Minor fault path optimizationChristoph Hellwig2007-05-021-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | Call the kprobes pagefault handler directly instead of going through the complex notifier chain. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Remove duplicate export of __div64_32.Scott Wood2007-05-021-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Change 3927f2e8f9afa3424bb51ca81f7abac01ffd0005 moved lib/lib64.c from lib-y to obj-y, preventing the export in ppc_ksyms.c from overriding the one in lib, and thus causing a duplicate-export warning. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] PS3: Fix system slowdownTakao Shinohara2007-05-021-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PS3 HV will deliver soft-disabled interrupts at the next HV call or interrupt. Add an HV call to local_irq_restore() to force the timely delivery of any pending interrupts. This fixes the system slowdown bug reported here http://bugzilla.kernel.org/show_bug.cgi?id=8260 Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix suspend states againJohannes Berg2007-05-022-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 0fba3a1f39f8b0a50b56c8b068fa52131cbc84c2 (a very long time ago, May 2006), I fixed a bug that caused powermacs to crash when you tried entering standby/mem suspend states. As I'm now getting more familiar with the suspend code I notice a few more things: 1. we previously misunderstood what pm_ops is for, it isn't supposed to be for doing platform dependent suspend/resume stuff that needs to be done for suspend to disk (as we currently try to use it!), it is instead for entering platform dependent suspend states ("standby", "mem"). 2. due to the first point, we never properly save FPU and altivec states when suspending to disk. It probably hasn't hurt yet because the process that writes the "disk" to /sys/power/state uses neither and its context is used. This patch addresses these points as follows: 1. remove all pm_ops from powermac, powermac suspend to ram isn't currently usable via /sys/power/state but is done via the PMU instead. 2. move the code responsible for storing FPU/altivec state into save_processor_state and the set_context() call to restore_processor_state. 3. add a call to kernel_enable_spe() It may look like there is some code removal missing but that is actually because the new suspend.h file overrides the ppc/suspend.h one which was previously used. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix STRICT_MM_TYPECHECKSDavid Gibson2007-05-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we don't have it active by default, the STRICT_MM_TYPECHECKS option has bitrotted again. This patch fixes a couple of simple build fixes if the option is selected. First, pud_t mustn't be defined in page.h on 32-bit systems, because it conflicts with the version in the generic pud-folding code. Second, pci_32.c is missing a __pgprot() wrapper call. Third, a couple of PS3 files use constants of type pgprot_t when they need the raw values, we add pgprot_val() calls to fix this. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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