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path: root/arch/x86/kernel/io_apic_32.c
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2008-07-08x86: let setup_arch call init_apic_mappings for 32bitYinghai Lu
instead of calling it from trap_init() also move init ioapic mapping out of apic_32.c so 32 bit do same as 64 bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change __setup_vector_irq with setup_vector_irqGlauber Costa
We create a version of it for i386, and then take the CONFIG_X86_64 ifdef out of the game. We could create a __setup_vector_irq for i386, but it would incur in an unnecessary lock taking. Moreover, it is better practice to only export setup_vector_irq anyway. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/mpparse' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/io_apic_32.c arch/x86/kernel/setup_64.c arch/x86/mm/init_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'linus' into tmp.x86.mpparse.newIngo Molnar
2008-07-08Merge branch 'x86/irq' into x86/develIngo Molnar
Conflicts: arch/x86/kernel/i8259.c arch/x86/kernel/irqinit_64.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branches 'x86/numa-fixes', 'x86/apic', 'x86/apm', 'x86/bitops', ↵Ingo Molnar
'x86/build', 'x86/cleanups', 'x86/cpa', 'x86/cpu', 'x86/defconfig', 'x86/gart', 'x86/i8259', 'x86/intel', 'x86/irqstats', 'x86/kconfig', 'x86/ldt', 'x86/mce', 'x86/memtest', 'x86/pat', 'x86/ptemask', 'x86/resumetrace', 'x86/threadinfo', 'x86/timers', 'x86/vdso' and 'x86/xen' into x86/devel
2008-07-08x86, arch/x86/kernel/io_apic_32.c: use kzalloc instead of kmalloc/memsetChristophe Jaillet
1) replace kmalloc/memset with equivalent kzalloc. Signed-off-by: Christophe Jaillet <jaillet.christophe@wanadoo.fr> Cc: cj <jaillet.christophe@wanadoo.fr> Cc: petero2@telia.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: coding style fixes to arch/x86/kernel/io_apic_32.cPaolo Ciarrocchi
Before: total: 91 errors, 73 warnings, 2850 lines checked After: total: 1 errors, 47 warnings, 2848 lines checked Compile tested: paolo@paolo-desktop:/tmp$ size io* text data bss dec hex filename 13836 1756 11104 26696 6848 io_apic_32.o.after 13836 1756 11104 26696 6848 io_apic_32.o.before Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, io-apic: use predefined names instead of numeric constantsCyrill Gorcunov
This patch replaces some hard-coded numbers with predefined names. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: IO-APIC - use NMI_NONE instead of numeric constantCyrill Gorcunov
Not sure but maybe it is better to use NMI_DISABLED, will take a look. But for now this patch is not change anything in logic so it will not hurt/broke the kernel. For most cases nmi_watchdog assignment is by one of NMI_* macro so I think there it make sense too. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: timer through 8259A second-chanceMaciej W. Rozycki
Some systems incorrectly report the ExtINTA pin of the I/O APIC as the genuine target of the timer interrupt. Here is a change that copies timer pin information found to the other pin if one has been found only. This way both a direct and a through-8259A route is tested with the pin letting these problematic systems work well enough. If no timer pin information has been found for the I/O APIC, then local APIC variations are tried only, similarly to what is done without the change (except without the misleading messages). Obviously if we try the first-chance path without being told by the BIOS to do so, we should not complain either, so do not print the message in this case. The 64-bit variation should be updated with a call to replace_pin_at_irq() which can be done with the upcoming merge. Since add_pin_to_irq() is now always called in the first-chance path, the condition to require it in the second-chance path no longer happens. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: keep the timer IRQ masked during set-upMaciej W. Rozycki
Keep the timer interrupt line masked when reconfiguring its interrupt redirection entry in the I/O APIC. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: unmask the second-chance timer interruptMaciej W. Rozycki
Unmask the timer interrupt line set up in the through-8259A mode explicitly after setup_timer_IRQ0_pin() has set up the I/O APIC interrupt redirection entry to let the two operations be unbound from each other. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: rename setup_ExtINT_IRQ0_pin()Maciej W. Rozycki
Rename setup_ExtINT_IRQ0_pin() to setup_timer_IRQ0_pin() to better reflect the upcoming role of a function setting up a (semi-)arbitrary I/O APIC pin appropriately for the 8254 timer. By "appropriate" the following settings are meant: edge-triggered, active-high, all the other settings per-architecture. Adjust comments to reflect code appropriately. No functional changes. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: remove redundant LVT0 maskingMaciej W. Rozycki
The LINT0 line of the local APIC is masked in the LVT0 entry in check_timer() before this function is ever called. Removed the redundant unmasking for better control. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: remove redundant 8259A {,un}maskingMaciej W. Rozycki
For a better control the masking and unmasking of the timer interrupt line in the 8259A operating in the 'Virtual Wire' mode has been moved out of setup_ExtINT_IRQ0_pin() now, so remove the redundant calls from the function. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: fix the name of the through-8259A handlerMaciej W. Rozycki
When the through-8259A mode is used for the timer, the call to set_irq_handler() will register a NULL handler name, resulting in "IO-APIC-<NULL>" reported. Fix by calling ioapic_register_intr() as done for all the other I/O APIC interrupts. The 64-bit variation calls set_irq_chip_and_handler_name() here needlessly and should get fixed with the upcoming merge. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: fix the name of the L-APIC IRQ handlerMaciej W. Rozycki
The local APIC interrupt handler gets registered with set_irq_chip_and_handler_name(), which results in "local-APIC-edge-fasteoi" reported as the name of the handler. Fix by removing the type of the handler left over from before the generic handlers were introduced. The 64-bit variation should get fixed with the upcoming merge. NB It should really use the "edge" handler and not the "fasteoi" one, but that's a separate issue. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: clean up the 8259A on a NMI watchdog failureMaciej W. Rozycki
There is no point in keeping the 8259A enabled if the I/O APIC NMI watchdog has failed and the 8259A is not used to pass through regular timer interrupts. This fixes problems with some systems where some logic gets confused. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: keep IRQ off when changing LVT registersMaciej W. Rozycki
Disable the 8259A acting in the "virtual wire" mode to keep the interrupt line inactive while fiddling with local APIC interrupt vector registers associated with its destination inputs. To be on the safe side, especially concerning flipping the trigger mode. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: clean up after a fasteoi failureMaciej W. Rozycki
Disable the 8259A when routing of the timer interrupt through the chip to the local APIC of the primary processor has failed. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: remove parameters to fiddle with the 8259AMaciej W. Rozycki
Remove the "disable_8254_timer" and "enable_8254_timer" kernel parameters. Now that AEOI acknowledgements are no longer needed for correct timer operation, the 8259A can be kept disabled unconditionally unless interrupts, either timer or watchdog ones, are actually passed through it. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: I/O APIC: AEOI timer acknowledgement clean-upsMaciej W. Rozycki
The code that used to be in do_slow_gettimeoffset() that relied on the IRR bit of the master 8259A PIC for IRQ0 to check the state of the output timer 0 of the PIT is no longer there. As a result, there is no need to use the POLL command to acknowledge the timer interrupt in the "8259A Virtual Wire", except for the NMI watchdog when the i82489DX APIC is used (this is because this particular APIC treats NMIs as level-triggered and keeping the input asserted would keep motherboard NMI sources held off for too long). Remove the unneeded bits and adjust comments accordingly. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Revert "Revert "x86: fix ioapic bug again""Ingo Molnar
This reverts commit 0b6a39f7ebcb1c82587ce35b401c513eed41ac5c. The changes in tip/x86/apic solve this better. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-16Merge branch 'linus' into x86/irqIngo Molnar
2008-06-16Merge branch 'linus' into x86/cleanupsIngo Molnar
2008-06-12Revert "x86: fix ioapic bug again"Ingo Molnar
This reverts commit 6e908947b4995bc0e551a8257c586d5c3e428201. Németh Márton reported: | there is a problem in 2.6.26-rc3 which was not there in case of | 2.6.25: the CPU wakes up ~90,000 times per sec instead of ~60 per sec. | | I also "git bisected" the problem, the result is: | | 6e908947b4995bc0e551a8257c586d5c3e428201 is first bad commit | commit 6e908947b4995bc0e551a8257c586d5c3e428201 | Author: Ingo Molnar <mingo@elte.hu> | Date: Fri Mar 21 14:32:36 2008 +0100 | | x86: fix ioapic bug again the original problem is fixed by Maciej W. Rozycki in the tip/x86/apic branch (confirmed by Márton), but those changes are too intrusive for v2.6.26 so we'll go for the less intrusive (repeated) revert now. Reported-and-bisected-by: Németh Márton <nm127@freemail.hu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-10x86: fix compile warning in io_apic_{32,64}.cAndreas Herrmann
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-10x86: make generic arch support NUMAQYinghai Lu
... so it could fall back to normal numa and we'd reduce the impact of the NUMAQ subarch. NUMAQ depends on GENERICARCH also decouple genericarch numa from acpi. also make it fall back to bigsmp if apicid > 8. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-25x86: move mp_bus_not_pci from mpparse.cAlexey Starikovskiy
2008-05-25x86: mp_bus_id_to_pci_bus is not neededAlexey Starikovskiy
2008-05-25x86: make config_irqsrc not MPspec specificAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-25x86: make struct config_ioapic not MPspec specificAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-12x86: change FIRST_SYSTEM_VECTOR to a variable, fixAlan Mayer
Fixes the build error introduced by my FIRST_SYSTEM_VECTOR patch Signed-off-by: Alan Mayer <ajm@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-12x86: change FIRST_SYSTEM_VECTOR to a variableAlan Mayer
The SGI UV system needs several more system vectors than a vanilla x86_64 system. Rather than burden the other archs with extra system vectors that they don't use, change FIRST_SYSTEM_VECTOR to a variable, so that it can be dynamic. Signed-off-by: Alan Mayer <ajm@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-28x86: Fix 32-bit MSI-X allocation leakagePJ Waskiewicz
This bug was introduced in the 2.6.24 i386/x86_64 tree merge, where MSI-X vector allocation will eventually fail. The cause is the new bit array tracking used vectors is not getting cleared properly on IRQ destruction on the 32-bit APIC code. This can be seen easily using the ixgbe 10 GbE driver on multi-core systems by simply loading and unloading the driver a few times. Depending on the number of available vectors on the host system, the MSI-X allocation will eventually fail, and the driver will only be able to use legacy interrupts. I am generating the same patch for both stable trees for 2.6.24 and 2.6.25. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-26x86: unlock_ExtINT_logic() - fix section mismatch warningsJacek Luczak
Fix following warning: WARNING: arch/x86/kernel/built-in.o(.text+0x12cc9): Section mismatch in reference from the function unlock_ExtINT_logic() unlock_ExtINT_logic() is only used by __init check_timer(). Annotate unlock_ExtINT_logic() witch __init. Signed-off-by: Jacek Luczak <luczak.jacek@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: remove unnecessary tmp local variableAkinobu Mita
There is no reason to use obscurer name. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use ioapic_read_entry() and ioapic_write_entry()Akinobu Mita
Remove duplicate code by using ioapic_read_entry() and ioapic_write_entry() in io_apic_{32,64}.c Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_irqs to io_apics_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_ioapics to io_apic_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: change GET_APIC_ID() from an inline function to an out-of-line functionJack Steiner
Introduce a function to read the local APIC_ID. This change is in preparation for additional changes to the APICID functions that will come in a later patch. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: fix ioapic bug againIngo Molnar
un-revert: commit 4960c9df1407c2723459c60ff13e6efe0c209c62 Author: Thomas Gleixner <tglx@linutronix.de> Date: Tue Jan 22 10:23:01 2008 +0100 Revert "x86: fix NMI watchdog & 'stopped time' problem" This reverts commit d4d25deca49ec2527a634557bf5a6cf449f85deb. needs a proper fix though ... Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: remove the write-only timer_uses_ioapic_pin_0Adrian Bunk
This patch removes the write-only timer_uses_ioapic_pin_0 (gsi can't be <= 15 in the line of it's fake usage in mpparse_32.c). Spotted by the GNU C compiler. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: make mp_bus_id_to_type optionalAlexey Starikovskiy
[ mingo@elte.hu: fix boot regression. ] Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use not_pci bitmap #6Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use not_pci bitmap #5Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use not_pci bitmap #4Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use not_pci bitmap #3Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use not_pci bitmap #2Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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