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* genirq: revert dynarrayThomas Gleixner2008-10-16
| | | | | | Revert the dynarray changes. They need more thought and polishing. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* genirq: remove irq_to_desc_allocThomas Gleixner2008-10-16
| | | | | | Remove the leftover of sparseirqs. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* genirq: remove sparse irq codeThomas Gleixner2008-10-16
| | | | | | | This code is not ready, but we need to rip it out instead of rebasing as we would lose the APIC/IO_APIC unification otherwise. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* genirq: use inline function for irq_to_descThomas Gleixner2008-10-16
| | | | | | For the non sparse irq case an inline function is perfectly fine. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* genirq: consolidate nr_irqs and for_each_irq_desc()Thomas Gleixner2008-10-16
| | | | | | Move all of those to linux/irq.h where they belong. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: remove sparse irq from KconfigThomas Gleixner2008-10-16
| | | | | | This code is not ready yet. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=nThomas Gleixner2008-10-16
| | | | | | | Revert the sparse irq changes in m68k/s390/sparc and just define nr_irqs as NR_IRQS for those architectures. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: apic - unify APIC_DIVISORCyrill Gorcunov2008-10-16
| | | | | | | | | | | | | | | | Use APIC_DIVISOR being set to 16 for both 32/64bit mode. To escape APIC timer underflow during calibration set it to the maximum possible value. Also typo error (CONFG instead of proper CONFIG) fixed. The error was caught by Venkatesh Pallipadi, thanks a lot Venkatesh! See details on http://lkml.org/lkml/2008/10/9/425 Reported-by: Venkatesh Pallipad <venkatesh.pallipadi@intel.com> Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Acked-by: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: sparse_irq: fix typo in debug print outYinghai Lu2008-10-16
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Add sysfs entries for UV v4Russ Anderson2008-10-16
| | | | | | | | Create /sys/firmware/sgi_uv sysfs entries for partition_id and coherence_id. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Add UV partition call v4Russ Anderson2008-10-16
| | | | | | | | Add a bios call to return partitioning related info. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Add UV bios call infrastructure v4Russ Anderson2008-10-16
| | | | | | | | | | | Add the EFI callback function and associated wrapper code. Initialize SAL system table entry info at boot time. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Huang Ying <ying.huang@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Add UV EFI table entry v4Russ Anderson2008-10-16
| | | | | | | | | | Look for a UV entry in the EFI tables. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Huang Ying <ying.huang@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, UV: add uv_setup_irq() and uv_teardown_irq() functions, v3, fixIngo Molnar2008-10-16
| | | | | | | | | fix: arch/x86/kernel/uv_irq.c: In function 'uv_ack_apic': arch/x86/kernel/uv_irq.c:26: error: implicit declaration of function 'ack_APIC_irq' Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, UV: add uv_setup_irq() and uv_teardown_irq() functions, v3Dean Nelson2008-10-16
| | | | | | | | Provide a means for UV interrupt MMRs to be setup with the message to be sent when an MSI is raised. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* hpet: clean up warningVenki Pallipadi2008-10-16
| | | | | | | | | | | Fix the below compile warnings due to recent HPET MSI changes arch/x86/kernel/hpet.c:48: warning: 'hpet_devs' defined but not used arch/x86/kernel/hpet.c:50: warning: 'per_cpu__cpu_hpet_dev' defined but not used Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: print out irq nr for msi/ht, v3Yinghai Lu2008-10-16
| | | | | | | | | | v2: fix hpet compiling error v3: Bjorn want to use dev_printk instead Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - interrupt remapping fixCyrill Gorcunov2008-10-16
| | | | | | | | | Clean up obscure for() cycle with straight while() form Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: irq no should not use hex in /proc/interruptsYinghai Lu2008-10-16
| | | | | | | | | | Arjan van de Ven noticed that we changed IRQ numbers from decimal to hex in /proc/interrupts - that can break user-space utilities like irqbalanced. Reported-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix typo in irq_desc arrayYinghai Lu2008-10-16
| | | | | | | when SPARSE_IRQ is not used, should still use irq_desc->lock Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, uv: fix ordering of calls to uv_system_init & uv_cpu_initJack Steiner2008-10-16
| | | | | | | | | | | | Fix problem caused by reordering of the calls to uv_cpu_init() & uv_system_init. Originally, uv_cpu_init() was called AFTER uv_system_init. This order was recently broken as a side-effect of other patches. With this patch, initialization of cpu 0 is now done by the system_init call. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - interrupt remapping fixCyrill Gorcunov2008-10-16
| | | | | | | | | | | Interrupt remapping could lead to NULL dereference in case of kzalloc failed and memory leak in other way. So fix the both cases. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* fix warning: "x86: sparse_irq needs spin_lock in allocations"Andrew Morton2008-10-16
| | | | | | | | | | | | | caused by commit a532e19680ada3b8579b81e67e76d3ebd19c340f Author: Yinghai Lu <yhlu.kernel@gmail.com> Date: Wed Aug 20 20:46:25 2008 -0700 x86: sparse_irq needs spin_lock in allocations Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sparseirq: remove some debug print outYinghai Lu2008-10-16
| | | | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* irq: fix irqpoll && sparseirqYinghai Lu2008-10-16
| | | | | | | | | | | | | Steven Noonan reported a boot hang when using irqpoll and CONFIG_HAVE_SPARSE_IRQ=y. The irqpoll loop needs to be updated to not iterate from 1 to nr_irqs but to iterate via for_each_irq_desc(). (in the former case desc can be NULL which crashes the box) Reported-by: Steven Noonan <steven@uplinklabs.net> Tested-by: Steven Noonan <steven@uplinklabs.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - do not use KERN_DEBUG marker too much, fixCyrill Gorcunov2008-10-16
| | | | | | | | | | | | | | | | | | Yinghai Lu reported: | > 0 add_pin_to_irq: irq 15 --> apic 0 pin 15 | > IOAPIC[0]: Set routing entry (8-15 -> 0x3f -> IRQ 15 Mode:0 Active:0) | > 8-16 8-17 8-18 8-19 8-20 8-21 8-22 8-23 (apicid-pin) not connected | > 9-0 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 9-10 9-11 9-12 9-13 9-14 9-15 | > 9-16 9-17 9-18 9-19 9-20 9-21 9-22 9-23 (apicid-pin) not connected | > | | only first one not connected at first, and ... here is a quick fix for this. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: apic - fix unused vars warning in calibrate_APIC_clockCyrill Gorcunov2008-10-16
| | | | | | | | | | If we don't have CONFIG_X86_PM_TIMER=y compiler warns about unused variables. Move PM timer based calibration into a separate function and make the code cleaner and the compiler happy as well. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: apic - skip writting ESR register if we dont have onCyrill Gorcunov2008-10-16
| | | | | | | | On 82489DX we don't have ESR register so we should not write it. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: apic - lapic_setup_esr does not handle esr_disable - fix itCyrill Gorcunov2008-10-16
| | | | | | | | | lapic_setup_esr doesn't handle esr_disable inquire. The error brought in during unification process. Fix it. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* dyn_array: use %pF instead of print_fn_descriptor_symbolYinghai Lu2008-10-16
| | | | | | | ... and tidy up the printouts. Suggested by Andrew Morton. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: print out apic id in hex formatYinghai Lu2008-10-16
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - get rid of __DO_ACTION macroCyrill Gorcunov2008-10-16
| | | | | | | | | | | | | | | Replace __DO_ACTION macro with io_apic_modify_irq function. This allow us to 'grep' definitions being hided by __DO_ACTION macro: __unmask_IO_APIC_irq __mask_IO_APIC_irq __mask_and_edge_IO_APIC_irq __unmask_and_level_IO_APIC_irq Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Acked-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix HPET compiler error when not using CONFIG_PCI_MSISteven Noonan2008-10-16
| | | | | | | Added dummy function for hpet_setup_msi_irq(). Signed-off-by: Steven Noonan <steven@uplinklabs.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: using HPET in MSI mode and setting up per CPU HPET timers, fixVenki Pallipadi2008-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sat, Sep 06, 2008 at 06:03:53AM -0700, Ingo Molnar wrote: > > it crashes two testsystems, the fault on a NULL pointer in hpet init, > with: > > initcall print_all_ICs+0x0/0x520 returned 0 after 26 msecs > calling hpet_late_init+0x0/0x1c0 > BUG: unable to handle kernel NULL pointer dereference at 000000000000008c > IP: [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > PGD 0 > Oops: 0000 [1] SMP > CPU 0 > Modules linked in: > Pid: 1, comm: swapper Not tainted 2.6.27-rc5 #29725 > RIP: 0010:[<ffffffff80d228be>] [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > RSP: 0018:ffff88003fa07dd0 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 > RDX: ffffc20000000160 RSI: 0000000000000000 RDI: 0000000000000003 > RBP: ffff88003fa07e90 R08: 0000000000000000 R09: ffff88003fa07dd0 > R10: 0000000000000001 R11: 0000000000000000 R12: ffff88003fa07dd0 > R13: 0000000000000002 R14: ffffc20000000000 R15: 000000006f57e511 > FS: 0000000000000000(0000) GS:ffffffff80cf6a80(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 000000000000008c CR3: 0000000000201000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process swapper (pid: 1, threadinfo ffff88003fa06000, task ffff88003fa08000) > Stack: 00000000fed00000 ffffc20000000000 0000000100000003 0000000800000002 > 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > Call Trace: > [<ffffffff80d227c0>] ? hpet_late_init+0x0/0x1c0 > [<ffffffff80209045>] do_one_initcall+0x45/0x190 > [<ffffffff80296f39>] ? register_irq_proc+0x19/0xe0 > [<ffffffff80d0d140>] ? early_idt_handler+0x0/0x73 > [<ffffffff80d0dabc>] kernel_init+0x14c/0x1b0 > [<ffffffff80942ac1>] ? trace_hardirqs_on_thunk+0x3a/0x3f > [<ffffffff8020dbd9>] child_rip+0xa/0x11 > [<ffffffff8020ceee>] ? restore_args+0x0/0x30 > [<ffffffff80d0d970>] ? kernel_init+0x0/0x1b0 > [<ffffffff8020dbcf>] ? child_rip+0x0/0x11 > Code: 20 48 83 c1 01 48 39 f1 75 e3 44 89 e8 4c 8b 05 29 29 22 00 31 f6 48 8d 78 01 66 66 90 89 f0 48 8d 04 80 48 c1 e0 05 4a 8d 0c 00 <f6> 81 8c 00 00 00 08 74 26 8b 81 80 00 00 00 8b 91 88 00 00 00 > RIP [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > RSP <ffff88003fa07dd0> > CR2: 000000000000008c > Kernel panic - not syncing: Fatal exception There was one code path, with CONFIG_PCI_MSI disabled, where we were accessing hpet_devs without initialization. That resulted in the above crash. The change below adds a check for hpet_devs. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - do not use KERN_DEBUG marker too muchCyrill Gorcunov2008-10-16
| | | | | | | | | Do not use KERN_DEBUG several times on the same line being printed. Introduced by mine previous patch, sorry. Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: lapic address print out like io apic addrYinghai Lu2008-10-16
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* dyn_array: remove one panicYinghai Lu2008-10-16
| | | | | | | | Andrew said, we don't need duplicated panic. because __alloc_bootmem already have that. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - code style cleaning for setup_IO_APIC_irqsCyrill Gorcunov2008-10-16
| | | | | | | | | | | | | | | | | | | By changing printout form we are able to shrink (and clean up) code a bit. Former printout example: init IO_APIC IRQs IO-APIC (apicid-pin) 1-1, 1-2, 1-3 not connected. IO-APIC (apicid-pin) 2-1, 2-2, 2-3 not connected. New printout example: init IO_APIC IRQs 1-1 1-2 1-3 (apicid-pin) not connected 2-1 2-2 2-3 (apicid-pin) not connected Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: HPET_MSI Initialise per-cpu HPET timersvenkatesh.pallipadi@intel.com2008-10-16
| | | | | | | | | | | | | | | Initialize a per CPU HPET MSI timer when possible. We retain the HPET timer 0 (IRQ 0) and timer 1 (IRQ 8) as is when legacy mode is being used. We setup the remaining HPET timers as per CPU MSI based timers. This per CPU timer will eliminate the need for timer broadcasting with IRQ 0 when there is non-functional LAPIC timer across CPU deep C-states. If there are more CPUs than number of available timers, CPUs that do not find any timer to use will continue using LAPIC and IRQ 0 broadcast. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: HPET_MSI Basic HPET_MSI setup code, cleanupsIngo Molnar2008-10-16
| | | | | | small style cleanups. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: HPET_MSI Basic HPET_MSI setup codevenkatesh.pallipadi@intel.com2008-10-16
| | | | | | | | | Basic HPET MSI setup code. Routines to perform basic MSI read write in HPET memory map and setting up irq_chip for HPET MSI. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: HPET_MSI Refactor code in preparation for HPET_MSIvenkatesh.pallipadi@intel.com2008-10-16
| | | | | | | | | | Preparatory patch before the actual HPET MSI changes. Sets up hpet_set_mode and hpet_next_event for the MSI related changes. Just the code refactoring and should be zero functional change. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: HPET_MSI change IRQ affinity in process context when it is disabledvenkatesh.pallipadi@intel.com2008-10-16
| | | | | | | | Change the IRQ affinity in the process context when the IRQ is disabled. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* irq: error missed ifndef CONFIG_HAVE_SPARSE_IRQ, v2Yinghai Lu2008-10-16
| | | | | | need to change irq to int too Signed-off-by: Ingo Molnar <mingo@elte.hu>
* irq: set_irq_chip() has redundant call to irq_to_desc()Dean Nelson2008-10-16
| | | | | | | | Extraneous call to irq_to_desc(). Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* irq: error missed ifndef CONFIG_HAVE_SPARSE_IRQDean Nelson2008-10-16
| | | | | | | | | An error return from create_irq_nr() is 0, but an error return from create_irq() is -1. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - declare irq_cfg_lock for SPARSE_IRQ onlyCyrill Gorcunov2008-10-16
| | | | | | | | We use irq_cfg_lock lock in SPARSE_IRQ only context so move it under #ifdef and compiler will be happy. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: io-apic - use ARRAY_SIZE macroCyrill Gorcunov2008-10-16
| | | | | | | Make the code width a bit shorter with ARRAY_SIZE macro. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* dyn_array: fix typoYinghai Lu2008-10-16
| | | | | | | | | Andrew found the typo could break some platforms. also fix a checkpatch warning. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: print out if acpi want physical flat of allYinghai Lu2008-10-16
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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