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2006-03-27[PATCH] spufs: Fix endless protection fault on LS writes by SPE.Arnd Bergmann
If an SPE attempts a DMA put to a local store after already doing a get, the kernel must update the HW PTE to allow the write access. This case was not being handled correctly. From: Mike Kistler <mkistler@us.ibm.com> Signed-off-by: Mike Kistler <mkistler@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: use guarded ioremap for cell on-chip mappingsArnd Bergmann
I'm not sure where the information came from, but I assumed that doing cache-inhibited mappings for mmio regions was sufficient. It seems we also need the guarded bit set, like everyone else, which is the default for ioremap. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: fix spider-pic affinity settingArnd Bergmann
As noticed by Milton Miller, setting the initial affinity in spider-pic can go wrong if the target node field was not orinally empty. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: dynamic probe - use ppc_md.pci_probe_mode()John Rose
Change the dynamic PCI probe function for pSeries to use ppc_md.pci_probe_mode() when appropriate. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] spufs: initialize context correctlyDirk Herrendoerfer
the mfc member of a new context was not initialized to zero, which potentially leads to wild memory accesses. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] spufs: enable SPE problem state MMIO access.Mark Nutter
This patch is layered on top of CONFIG_SPARSEMEM and is patterned after direct mapping of LS. This patch allows mmap() of the following regions: "mfc", which represents the area from [0x3000 - 0x3fff]; "cntl", which represents the area from [0x4000 - 0x4fff]; "signal1" which begins at offset 0x14000; "signal2" which begins at offset 0x1c000. The signal1 & signal2 files may be mmap()'d by regular user processes. The cntl and mfc file, on the other hand, may only be accessed if the owning process has CAP_SYS_RAWIO, because they have the potential to confuse the kernel with regard to parallel access to the same files with regular file operations: the kernel always holds a spinlock when accessing registers in these areas to serialize them, which can not be guaranteed with user mmaps, Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] spufs: implement mfc access for PPE-side DMAArnd Bergmann
This patch adds a new file called 'mfc' to each spufs directory. The file accepts DMA commands that are a subset of what would be legal DMA commands for problem state register access. Upon reading the file, a bitmask is returned with the completed tag groups set. The file is meant to be used from an abstraction in libspe that is added by a different patch. From the kernel perspective, this means a process can now offload a memory copy from or into an SPE local store without having to run code on the SPE itself. The transfer will only be performed while the SPE is owned by one thread that is waiting in the spu_run system call and the data will be transferred into that thread's address space, independent of which thread started the transfer. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] spufs: allow SPU code to do syscallsArnd Bergmann
An SPU does not have a way to implement system calls itself, but it can create intercepts to the kernel. This patch uses the method defined by the JSRE interface for C99 host library calls from an SPU to implement Linux system calls. It uses the reserved SPU stop code 0x2104 for this, using the structure layout and syscall numbers for ppc64-linux. I'm still undecided wether it is better to have a list of allowed syscalls or a list of forbidden syscalls, since we can't allow an SPU to call all syscalls that are defined for ppc64-linux. This patch implements the easier choice of them, with a blacklist that only prevents an SPU from calling anything that interacts with its own execution, e.g fork, execve, clone, vfork, exit, spu_run and spu_create and everything that deals with signals. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: work around a cell interrupt HW bugArnd Bergmann
Apparently we have found a bug in the CPU that causes external interrupts to sometimes get disabled indefinitely. This adds a workaround for the problem. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: cell interrupt controller updatesJens Osterkamp
The current interrupt controller setup on Cell is done in a rather ad-hoc way with device tree properties that are not standardized at all. In an attempt to do something that follows the OF standard (or at least the IBM extensions to it) more closely, we have now come up with this patch. It still provides a fallback to the old behaviour when we find older firmware, that hack can not be removed until the existing customer installations have upgraded. Cc: hpenner@de.ibm.com Cc: stk@de.ibm.com Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Milton Miller <miltonm@bga.com> Cc: benh@kernel.crashing.org Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27[PATCH] powerpc: fix cell iommu setupArnd Bergmann
A small bug crept in the iommu driver when we made it more generic. This patch is needed for boards that have a dma window that does not start at bus address zero. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.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>
2006-03-26[PATCH] sem2mutex: misc static one-file mutexesIngo Molnar
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Jens Axboe <axboe@suse.de> Cc: Neil Brown <neilb@cse.unsw.edu.au> Acked-by: Alasdair G Kergon <agk@redhat.com> Cc: Greg KH <greg@kroah.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23[PATCH] more for_each_cpu() conversionsAndrew Morton
When we stop allocating percpu memory for not-possible CPUs we must not touch the percpu data for not-possible CPUs at all. The correct way of doing this is to test cpu_possible() or to use for_each_cpu(). This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very few instances of this bug, if any. But the patch converts lots of open-coded test to use the preferred helper macros. Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Acked-by: Kyle McMartin <kyle@parisc-linux.org> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: Andi Kleen <ak@muc.de> Cc: Christian Zankel <chris@zankel.net> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: Nathan Scott <nathans@sgi.com> Cc: Jens Axboe <axboe@suse.de> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (78 commits) [PATCH] powerpc: Add FSL SEC node to documentation [PATCH] macintosh: tidy-up driver_register() return values [PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values [PATCH] powerpc: via-pmu warning fix [PATCH] macintosh: cleanup the use of i2c headers [PATCH] powerpc: dont allow old RTC to be selected [PATCH] powerpc: make powerbook_sleep_grackle static [PATCH] powerpc: Fix warning in add_memory [PATCH] powerpc: update mailing list addresses [PATCH] powerpc: Remove calculation of io hole [PATCH] powerpc: iseries: Add bootargs to /chosen [PATCH] powerpc: iseries: Add /system-id, /model and /compatible [PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCII [PATCH] powerpc: iseries: Make more stuff static in platforms/iseries/mf.c [PATCH] powerpc: iseries: Remove pointless iSeries_(restart|power_off|halt) [PATCH] powerpc: iseries: mf related cleanups [PATCH] powerpc: Replace platform_is_lpar() with a firmware feature [PATCH] powerpc: trivial: Cleanup whitespace in cputable.h [PATCH] powerpc: Remove unused iommu_off logic from pSeries_init_early() [PATCH] powerpc: Unconfuse htab_bolt_mapping() callers ...
2006-03-22[PATCH] remove set_page_count() outside mm/Nick Piggin
set_page_count usage outside mm/ is limited to setting the refcount to 1. Remove set_page_count from outside mm/, and replace those users with init_page_count() and set_page_refcounted(). This allows more debug checking, and tighter control on how code is allowed to play around with page->_count. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22[PATCH] powerpc: iseries: Add bootargs to /chosenMichael Ellerman
Add the command line args to the device tree as /chosen/bootargs. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: iseries: Add /system-id, /model and /compatibleMichael Ellerman
Add /system-id, /model and /compatible to the iSeries device tree. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: iseries: Make more stuff static in platforms/iseries/mf.cMichael Ellerman
Make mf_get_rtc(), mf_get_boot_rtc() and mf_set_rtc() static, cause they can be. We need to move mf_set_rtc() to avoid a forward declaration. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: iseries: Remove pointless iSeries_(restart|power_off|halt)Michael Ellerman
These routines just call through to the mf routines, so point ppc_md straight at the mf routines. We need to pass the cmd through to mf_reboot to make it work, but that seems reasonable. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: iseries: mf related cleanupsMichael Ellerman
Some cleanups in the iSeries code. - Make mf_display_progress() check mf_initialized rather than the caller. - Set mf_initialized in mf_init() rather than in setup.c - Then move mf_initialized into mf.c, the only place it's used. - Move the mf related logic from iSeries_progress() to mf_display_progress() - Use a #define to size the pending_event_prealloc array - Use that define in the initialsation loop rather than sizeof jiggery pokery - Remove stupid comment(s) - Mark stuff static and/or __init Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: Replace platform_is_lpar() with a firmware featureMichael Ellerman
It has been decreed that platform numbers are evil, so as a step in that direction, replace platform_is_lpar() with a FW_FEATURE_LPAR bit. Currently FW_FEATURE_LPAR really means i/pSeries LPAR, in the future we might have to clean that up if we need to be more specific about what LPAR actually means. But that's another patch ... Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22[PATCH] powerpc: Remove unused iommu_off logic from pSeries_init_early()Michael Ellerman
When iommu_init_early_pSeries() was added, ages ago, we forgot to remove the code that checks /chosen/linux,iommu-off in pSeries_init_early(). We do it now in iommu_init_early_pSeries(). Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-22Merge branch '85xx' of ↵Paul Mackerras
git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc
2006-03-20Merge branch 'master'Kumar Gala
2006-03-20Merge branch 'master'Kumar Gala
2006-03-17Merge ../linux-2.6Paul Mackerras
2006-03-16[PATCH] powerpc: properly configure DDR/P5IOC children devsJohn Rose
The dynamic add path for PCI Host Bridges can fail to configure children adapters under P5IOC controllers. It fails to properly fixup bus/device resources, and it fails to properly enable EEH. Both of these steps need to occur before any children devices are enabled in pci_bus_add_devices(). Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: enable NAP only on cpus who support it to avoid memory ↵Benjamin Herrenschmidt
corruption This patch fixes incorrect setting of powersave_nap to 1 on all PowerMacs, potentially causing memory corruption on some models. This bug was introuced by me during the 32/64 bits merge. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-14powerpc: Disallow lparcfg being a modulePaul Mackerras
The lparcfg code needs several things which are pretty arcane internal details and which we don't want to export, which means that lparcfg doesn't work when built as a module. This makes it a bool instead of a tristate in the Kconfig so that users can't try to build it as a module. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-09Merge ../linux-2.6Paul Mackerras
2006-03-03powerpc32: Fix timebase synchronization on 32-bit powermacsPaul Mackerras
The variable `timebase' used to transfer the current timebase value from one cpu to the other in smp_core99_give/take_timebase was only an unsigned long, i.e. 32 bits on 32-bit machines. It needs to be 64 bits. This makes it a u64, and fixes the issue reported by Kyle Moffett, that the two cpus see wildly different values for the time of day. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-03powerpc: Turn off verbose debug output in powermac platform functionsPaul Mackerras
This is along the lines suggested by Chris Lumens but goes further in that it leaves the DEBUG symbol undefined, making the DBG macro empty. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-28Merge branch 'master' of ↵Kumar Gala
git+ssh://galak@master.kernel.org/pub/scm/linux/kernel/git/galak/powerpc
2006-02-28Merge ../powerpc-mergePaul Mackerras
2006-02-28[PATCH] powerpc: fix NULL pointer in handle_eeh_eventsOlaf Hering
This patch fixes a crash in handle_eeh_events, but ethtool -t still doesnt work right. ... pepino:~ # cpu 0x3: Vector: 300 (Data Access) at [c00000005192bbe0] pc: c00000000004a380: .handle_eeh_events+0xe0/0x23c lr: c00000000004a374: .handle_eeh_events+0xd4/0x23c sp: c00000005192be60 msr: 9000000000009032 dar: 268 dsisr: 40000000 current = 0xc0000001fe7bf1a0 paca = 0xc00000000048b280 pid = 16322, comm = eehd enter ? for help [c00000005192bf00] c00000000004a808 .eeh_event_handler+0xcc/0x130 [c00000005192bf90] c000000000025e00 .kernel_thread+0x4c/0x68 ... (none):/# /usr/sbin/ethtool -i eth0 driver: e100 version: 3.5.10-k2-NAPI firmware-version: N/A bus-info: 0000:21:01.0 (none):/# /usr/sbin/ethtool -t eth0 Call Trace: [C00000000F8DEFF0] [C00000000000F270] .show_stack+0x74/0x1b4 (unreliable) [C00000000F8DF0A0] [C000000000049D04] .eeh_dn_check_failure+0x290/0x2d8 [C00000000F8DF150] [C000000000049E58] .eeh_check_failure+0x10c/0x138 [C00000000F8DF1E0] [C0000000002DFDB0] .e100_hw_reset+0x70/0xf4 [C00000000F8DF270] [C0000000002E1BBC] .e100_hw_init+0x2c/0x260 [C00000000F8DF310] [C0000000002E2464] .e100_loopback_test+0x8c/0x220 [C00000000F8DF3C0] [C0000000002E28DC] .e100_diag_test+0xdc/0x16c [C00000000F8DF490] [C000000000420BE0] .dev_ethtool+0xf24/0x14f8 [C00000000F8DF8F0] [C00000000041F4A8] .dev_ioctl+0x5cc/0x740 [C00000000F8DFA20] [C00000000040FEFC] .sock_ioctl+0x3d0/0x404 [C00000000F8DFAC0] [C0000000000D513C] .do_ioctl+0x68/0x108 [C00000000F8DFB50] [C0000000000D56B0] .vfs_ioctl+0x4d4/0x510 [C00000000F8DFC10] [C0000000000D5740] .sys_ioctl+0x54/0x94 [C00000000F8DFCC0] [C0000000000FB6EC] .ethtool_ioctl+0x11c/0x150 [C00000000F8DFD60] [C0000000000F7E40] .compat_sys_ioctl+0x338/0x3bc [C00000000F8DFE30] [C00000000000871C] syscall_exit+0x0/0x40 EEH: Detected PCI bus error on device 0000:21:01.0 EEH: This PCI device has failed 1 times since last reboot: <NULL> - modprobe: FATAL: Could not load /lib/modules/2.6.16-rc4-git7/modules.dep: No such file or directory Cannot get strings: No such device (none):/# (none):/# EEH: Unable to configure device bridge (-3) for /pci@400000000110/pci@2,2 (none):/# Call Trace: [C00000000FA17940] [C00000000000F270] .show_stack+0x74/0x1b4 (unreliable) [C00000000FA179F0] [C000000000049D04] .eeh_dn_check_failure+0x290/0x2d8 [C00000000FA17AA0] [C00000000001E114] .rtas_read_config+0x120/0x154 [C00000000FA17B40] [C000000000049664] .early_enable_eeh+0x274/0x2bc [C00000000FA17C00] [C000000000049708] .eeh_add_device_early+0x5c/0x6c [C00000000FA17C90] [C000000000049748] .eeh_add_device_tree_early+0x30/0x5c [C00000000FA17D20] [C000000000046568] .pcibios_add_pci_devices+0x8c/0x1f8 [C00000000FA17DD0] [C00000000004A528] .eeh_reset_device+0xe0/0x110 [C00000000FA17E60] [C00000000004A698] .handle_eeh_events+0x140/0x250 [C00000000FA17F00] [C00000000004AC7C] .eeh_event_handler+0xe8/0x140 [C00000000FA17F90] [C000000000025784] .kernel_thread+0x4c/0x68 EEH: Detected PCI bus error on device <NULL> EEH: This PCI device has failed 1 times since last reboot: <NULL> - EEH: Unable to configure device bridge (-3) for /pci@400000000110/pci@2,2 Call Trace: [C00000000FA17940] [C00000000000F270] .show_stack+0x74/0x1b4 (unreliable) [C00000000FA179F0] [C000000000049D04] .eeh_dn_check_failure+0x290/0x2d8 [C00000000FA17AA0] [C00000000001E114] .rtas_read_config+0x120/0x154 [C00000000FA17B40] [C000000000049664] .early_enable_eeh+0x274/0x2bc [C00000000FA17C00] [C000000000049708] .eeh_add_device_early+0x5c/0x6c [C00000000FA17C90] [C000000000049748] .eeh_add_device_tree_early+0x30/0x5c [C00000000FA17D20] [C000000000046568] .pcibios_add_pci_devices+0x8c/0x1f8 [C00000000FA17DD0] [C00000000004A528] .eeh_reset_device+0xe0/0x110 [C00000000FA17E60] [C00000000004A698] .handle_eeh_events+0x140/0x250 [C00000000FA17F00] [C00000000004AC7C] .eeh_event_handler+0xe8/0x140 [C00000000FA17F90] [C000000000025784] .kernel_thread+0x4c/0x68 EEH: Detected PCI bus error on device <NULL> EEH: This PCI device has failed 1 times since last reboot: <NULL> - EEH: Unable to configure device bridge (-3) for /pci@400000000110/pci@2,2 Call Trace: [C00000000FA17940] [C00000000000F270] .show_stack+0x74/0x1b4 (unreliable) [C00000000FA179F0] [C000000000049D04] .eeh_dn_check_failure+0x290/0x2d8 [C00000000FA17AA0] [C00000000001E114] .rtas_read_config+0x120/0x154 [C00000000FA17B40] [C000000000049664] .early_enable_eeh+0x274/0x2bc [C00000000FA17C00] [C000000000049708] .eeh_add_device_early+0x5c/0x6c [C00000000FA17C90] [C000000000049748] .eeh_add_device_tree_early+0x30/0x5c [C00000000FA17D20] [C000000000046568] .pcibios_add_pci_devices+0x8c/0x1f8 [C00000000FA17DD0] [C00000000004A528] .eeh_reset_device+0xe0/0x110 [C00000000FA17E60] [C00000000004A698] .handle_eeh_events+0x140/0x250 [C00000000FA17F00] [C00000000004AC7C] .eeh_event_handler+0xe8/0x140 [C00000000FA17F90] [C000000000025784] .kernel_thread+0x4c/0x68 EEH: Detected PCI bus error on device <NULL> and so on Signed-off-by: Olaf Hering <olh@suse.de> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-28[PATCH] powerpc: fix dynamic PCI probe regressionJohn Rose
Some hotplug driver functions were migrated to the kernel for use by EEH in commit 2bf6a8fa21570f37fd1789610da30f70a05ac5e3. Previously, the PCI Hotplug module had been changed to use the new OFDT-based PCI probe when appropriate: 5fa80fcdca9d20d30c9ecec30d4dbff4ed93a5c6 When rpaphp_pci_config_slot() was moved from the rpaphp driver to the new kernel function pcibios_add_pci_devices(), the OFDT-based probe stuff was dropped. This patch restores it. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-24Merge ../powerpc-mergePaul Mackerras
2006-02-24[PATCH] powerpc: Don't re-assign PCI resources on MapleSegher Boessenkool
Maple firmware does not need PCI resource allocation, and in fact, it can cause problems in some strange cases. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-24[PATCH] powerpc64: remove broken/bitrotted HMT supportAnton Blanchard
HMT support is currently broken and needs to be reworked to play nicely with the SMT scheduler. Remove the bit rotten bits for the time being. I also updated an incorrect comment, we enter __secondary_hold with the physical cpu id in r3. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-24[PATCH] powerpc: Fix runlatch performance issuesAnton Blanchard
The runlatch SPR can take a lot of time to write. My original runlatch code would set it on every exception entry even though most of the time this was not required. It would also continually set it in the idle loop, which is an issue on an SMT capable processor. Now we cache the runlatch value in a threadinfo bit, and only check for it in decrementer and hardware interrupt exceptions as well as the idle loop. Boot on POWER3, POWER5 and iseries, and compile tested on pmac32. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-23[PATCH] powerpc: Initialise hvlpevent_queue.lock correctlyMichael Ellerman
When I changed the hvlpevent_queue code to use a spinlock instead of a custom atomic (719d1cd86780c156f954fc34f34481adac197aec) I didn't initialise the lock anywhere, oops. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-21powerpc: Add PCI support for 8540 ADS to powerpc treeAndy Fleming
Add PCI support for setting PCI from flat device tree on 85xx specifically for MPC8540 ADS. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2006-02-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds
2006-02-20[PATCH] powermac: Fix loss of ethernet PHY on sleepBenjamin Herrenschmidt
Some recent PowerBook models tend to lose the ethernet PHY on suspend/resume. It -seems- that they use a combo ethernet-firewire PHY chip and the firewire PHY seems to die the same way when that happens. Not trying to toggle the firewire cable power appears to fix it. So this patch disables changes to the firewire cable power control GPIO on those models. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-20[PATCH] powerpc: Fix bug in spinup of renumbered secondary threadsMichael Ellerman
If the logical and physical cpu ids of a secondary thread don't match, we will fail to spin the thread up on pSeries machines due to a bug in pseries/smp.c We call the RTAS "start-cpu" method with the physical cpu id, the address of pSeries_secondary_smp_init and the value to pass that function in r3. Currently we pass "lcpu", the logical cpu id, but pSeries_secondary_smp_init expects the physical cpu id in r3. We should be passing pcpu instead. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-16powerpc: Fix mpc83xx restart bugKumar Gala
We need to write the correct value to the RCR to get a HW reset. Signed-off-by: Kumar Gala <galak@kernel.crashing.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>
2006-02-10[PATCH] powerpc: Move pSeries firmware feature setup into platforms/pseriesMichael Ellerman
Currently we have some stuff in firmware.h and kernel/firmware.c that is #ifdef CONFIG_PPC_PSERIES. Move it all into platforms/pseries. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-10[PATCH] powerpc: Clean up pSeries firmware feature initialisationMichael Ellerman
Clean up fw_feature_init in platforms/pseries/setup.c. Clean up white space and replace the while loop with a for loop - which seems clearer to me. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>