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2006-03-28[PATCH] RTC: Remove RTC UIP synchronization on PPC MapleMatt Mackall
Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28[PATCH] RTC: Remove RTC UIP synchronization on CHRP (arch/powerpc)Matt Mackall
Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27[PATCH] Notifier chain update: API changesAlan Stern
The kernel's implementation of notifier chains is unsafe. There is no protection against entries being added to or removed from a chain while the chain is in use. The issues were discussed in this thread: http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2 We noticed that notifier chains in the kernel fall into two basic usage classes: "Blocking" chains are always called from a process context and the callout routines are allowed to sleep; "Atomic" chains can be called from an atomic context and the callout routines are not allowed to sleep. We decided to codify this distinction and make it part of the API. Therefore this set of patches introduces three new, parallel APIs: one for blocking notifiers, one for atomic notifiers, and one for "raw" notifiers (which is really just the old API under a new name). New kinds of data structures are used for the heads of the chains, and new routines are defined for registration, unregistration, and calling a chain. The three APIs are explained in include/linux/notifier.h and their implementation is in kernel/sys.c. With atomic and blocking chains, the implementation guarantees that the chain links will not be corrupted and that chain callers will not get messed up by entries being added or removed. For raw chains the implementation provides no guarantees at all; users of this API must provide their own protections. (The idea was that situations may come up where the assumptions of the atomic and blocking APIs are not appropriate, so it should be possible for users to handle these things in their own way.) There are some limitations, which should not be too hard to live with. For atomic/blocking chains, registration and unregistration must always be done in a process context since the chain is protected by a mutex/rwsem. Also, a callout routine for a non-raw chain must not try to register or unregister entries on its own chain. (This did happen in a couple of places and the code had to be changed to avoid it.) Since atomic chains may be called from within an NMI handler, they cannot use spinlocks for synchronization. Instead we use RCU. The overhead falls almost entirely in the unregister routine, which is okay since unregistration is much less frequent that calling a chain. Here is the list of chains that we adjusted and their classifications. None of them use the raw API, so for the moment it is only a placeholder. ATOMIC CHAINS ------------- arch/i386/kernel/traps.c: i386die_chain arch/ia64/kernel/traps.c: ia64die_chain arch/powerpc/kernel/traps.c: powerpc_die_chain arch/sparc64/kernel/traps.c: sparc64die_chain arch/x86_64/kernel/traps.c: die_chain drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list kernel/panic.c: panic_notifier_list kernel/profile.c: task_free_notifier net/bluetooth/hci_core.c: hci_notifier net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain net/ipv6/addrconf.c: inet6addr_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain net/netlink/af_netlink.c: netlink_chain BLOCKING CHAINS --------------- arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain arch/s390/kernel/process.c: idle_chain arch/x86_64/kernel/process.c idle_notifier drivers/base/memory.c: memory_chain drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list drivers/macintosh/adb.c: adb_client_list drivers/macintosh/via-pmu.c sleep_notifier_list drivers/macintosh/via-pmu68k.c sleep_notifier_list drivers/macintosh/windfarm_core.c wf_client_list drivers/usb/core/notify.c usb_notifier_list drivers/video/fbmem.c fb_notifier_list kernel/cpu.c cpu_chain kernel/module.c module_notify_list kernel/profile.c munmap_notifier kernel/profile.c task_exit_notifier kernel/sys.c reboot_notifier_list net/core/dev.c netdev_chain net/decnet/dn_dev.c: dnaddr_chain net/ipv4/devinet.c: inetaddr_chain It's possible that some of these classifications are wrong. If they are, please let us know or submit a patch to fix them. Note that any chain that gets called very frequently should be atomic, because the rwsem read-locking used for blocking chains is very likely to incur cache misses on SMP systems. (However, if the chain's callout routines may sleep then the chain cannot be atomic.) The patch set was written by Alan Stern and Chandra Seetharaman, incorporating material written by Keith Owens and suggestions from Paul McKenney and Andrew Morton. [jes@sgi.com: restructure the notifier chain initialization macros] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.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>
2006-02-10[PATCH] powerpc: lindent 85xx platform codeBecky Bruce
Ran arch/powerpc/platforms/85xx through Lindent Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-10[PATCH] powerpc: rename mpc85xx.c to misc.cBecky Bruce
Rename mpc85xx.c to misc.c to match the pattern established by the 8349 port - consistency is a good thing. Also run Lindent on the file to clean it up. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-10[PATCH] powerpc: mpc85xx_ads.c include file cleanupBecky Bruce
Cut-and-paste from the old platform code in arch/ppc resulted in arch/powerpc/platforms/85xx/mpc85xx_ads.c having way too many header files included. Clean this up. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-10Merge ../powerpc-mergePaul Mackerras
2006-02-08[PATCH] powermac pci iomem annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds
2006-02-07[PATCH] bogus extern in low_i2c.cAl Viro
extern in function definition is an odd thing.. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-07[PATCH] eeh_driver NULL noise removalAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-07[PATCH] drive_info removal outside of arch/i386Al Viro
drive_info is used only by hd.c and that happens under #ifdef __i386__. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>