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path: root/arch/x86/include/asm/irq_remapping.h
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2013-04-19iommu: Fix compile warnings with forward declarationsJoerg Roedel1-0/+7
The irq_remapping.h file for x86 does not include all necessary forward declarations for the data structures used. This causes compile warnings, so fix it. Signed-off-by: Joerg Roedel <[email protected]>
2013-04-18iommu/vt-d: add quirk for broken interrupt remapping on 55XX chipsetsNeil Horman1-0/+2
A few years back intel published a spec update: http://www.intel.com/content/dam/doc/specification-update/5520-and-5500-chipset-ioh-specification-update.pdf For the 5520 and 5500 chipsets which contained an errata (specificially errata 53), which noted that these chipsets can't properly do interrupt remapping, and as a result the recommend that interrupt remapping be disabled in bios. While many vendors have a bios update to do exactly that, not all do, and of course not all users update their bios to a level that corrects the problem. As a result, occasionally interrupts can arrive at a cpu even after affinity for that interrupt has be moved, leading to lost or spurrious interrupts (usually characterized by the message: kernel: do_IRQ: 7.71 No irq handler for vector (irq -1) There have been several incidents recently of people seeing this error, and investigation has shown that they have system for which their BIOS level is such that this feature was not properly turned off. As such, it would be good to give them a reminder that their systems are vulnurable to this problem. For details of those that reported the problem, please see: https://bugzilla.redhat.com/show_bug.cgi?id=887006 [ Joerg: Removed CONFIG_IRQ_REMAP ifdef from early-quirks.c ] Signed-off-by: Neil Horman <[email protected]> CC: Prarit Bhargava <[email protected]> CC: Don Zickus <[email protected]> CC: Don Dutile <[email protected]> CC: Bjorn Helgaas <[email protected]> CC: Asit Mallick <[email protected]> CC: David Woodhouse <[email protected]> CC: [email protected] CC: Joerg Roedel <[email protected]> CC: Konrad Rzeszutek Wilk <[email protected]> CC: Arkadiusz Miśkiewicz <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2013-01-28x86, irq: Move irq_remapped out of x86 core codeJoerg Roedel1-10/+0
The irq_remapped function is only used in IOMMU code after the last patch. So move its definition there too. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, irq: Introduce setup_remapped_irq()Joerg Roedel1-0/+9
This function does irq-remapping specific interrupt setup like modifying the chip defaults. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, io-apic: Move CONFIG_IRQ_REMAP code out of x86 coreJoerg Roedel1-0/+17
Move all the code to either to the header file asm/irq_remapping.h or to drivers/iommu/. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, irq: Move irq_remapping_enabled declaration to iommu codeJoerg Roedel1-4/+0
Remove the last left-over from this flag from x86 code. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, io_apic: Move irq_remapping_enabled checks out of check_timer()Joerg Roedel1-0/+5
Move these checks to IRQ remapping code by introducing the panic_on_irq_remap() function. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, io_apic: Introduce set_affinity function pointerJoerg Roedel1-9/+0
With interrupt remapping a special function is used to change the affinity of an IO-APIC interrupt. Abstract this with a function pointer. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2013-01-28x86, msi: Use IRQ remapping specific setup_msi_irqs routineJoerg Roedel1-12/+0
Use seperate routines to setup MSI IRQs for both irq_remapping_enabled cases. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
2012-05-08irq_remap: Fix compiler warning with CONFIG_IRQ_REMAP=ySuresh Siddha1-4/+2
Fix the below compiler warning: arch/x86/include/asm/irq_remapping.h:72:19: warning: ‘struct IO_APIC_route_entry’ declared inside parameter list [enabled by default] Signed-off-by: Suresh Siddha <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Joerg Roedel <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2012-05-07iommu: rename intr_remapping.[ch] to irq_remapping.[ch]Suresh Siddha1-0/+103
Make the file names consistent with the naming conventions of irq subsystem. Signed-off-by: Suresh Siddha <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: David Woodhouse <[email protected]> Cc: Alex Williamson <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2012-05-07x86, iommu/vt-d: Clean up interfaces for interrupt remappingJoerg Roedel1-22/+0
Remove the Intel specific interfaces from dmar.h and remove asm/irq_remapping.h which is only used for io_apic.c anyway. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Yinghai Lu <[email protected]> Cc: David Woodhouse <[email protected]> Cc: Alex Williamson <[email protected]> Signed-off-by: Suresh Siddha <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2012-05-07iommu/vt-d: Convert MSI remapping setup to remap_opsJoerg Roedel1-23/+0
This patch introduces remapping-ops for setting ups MSI interrupts. Signed-off-by: Joerg Roedel <[email protected]> Acked-by: Yinghai Lu <[email protected]> Cc: David Woodhouse <[email protected]> Cc: Alex Williamson <[email protected]> Signed-off-by: Suresh Siddha <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2011-09-21iommu: Rename the DMAR and INTR_REMAP config optionsSuresh Siddha1-1/+1
Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2011-09-21x86, ioapic: Define irq_remap_modify_chip_defaults()Suresh Siddha1-0/+4
Define irq_remap_modify_chip_defaults() and remove the duplicate code, cleanup the unnecessary ifdefs. Signed-off-by: Suresh Siddha <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2010-10-12x86: Speed up the irq_remapped check in hot pathesThomas Gleixner1-0/+8
irq_2_iommu is in struct irq_cfg, so we can do the irq_remapped check based on irq_cfg instead of going through a lookup function. That's especially interesting in the eoi_ioapic_irq() hotpath. Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Ingo Molnar <[email protected]> Acked-by: Suresh Siddha <[email protected]> Cc: David Woodhouse <[email protected]> Cc: Jesse Barnes <[email protected]>
2010-09-15x86, intr-remap: Remove IRTE setup duplicate codeSuresh Siddha1-0/+27
Remove IRTE setup duplicate code with prepare_irte(). Signed-off-by: Suresh Siddha <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
2009-04-21x86: x2apic, IR: Clean up X86_X2APIC and INTR_REMAP config checksSuresh Siddha1-1/+1
Add x2apic_supported() to clean up CONFIG_X86_X2APIC checks. Fix CONFIG_INTR_REMAP checks. [ Impact: cleanup ] Signed-off-by: Suresh Siddha <[email protected]> Cc: [email protected] Cc: Suresh Siddha <[email protected]> Cc: Weidong Han <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-03-17x86, x2apic: fix clear_local_APIC() in the presence of x2apicSuresh Siddha1-2/+0
Impact: cleanup, paranoia We were not clearing the local APIC in clear_local_APIC() in the presence of x2apic. Fix it. Signed-off-by: Suresh Siddha <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
2008-10-23x86: canonicalize remaining header guardsH. Peter Anvin1-3/+3
Canonicalize a few remaining header guards, with the exception for those which are still in subarchitecture directories. Signed-off-by: H. Peter Anvin <[email protected]>
2008-10-22x86, um: ... and asm-x86 moveAl Viro1-0/+8
Signed-off-by: Al Viro <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
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