[lkml]   [2010]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 0/15] Start coping gsis < 16 that are not isa irqs. v2 (Eric W. Biederman) writes:

    > It appears there are a few systems in the wild that use acpi
    > interrupt source overrides to report a gsi > 16 is an isa irq.
    > This breaks all kinds of assumptions I figure any BIOS doing that
    > probably should be shot as that is very much not a conservative position.
    > That said acpi appears to allow this insanity and on the basis of being
    > liberal in what we accept we should try to do something reasonable, and
    > keep our notions of gsi, isa irq, and linux irq as straight as we can.
    > To that end this patchset slightly modifies the gsi to linux irq
    > mapping. Making it a 1 to 1 identity mapping except for the first 16
    > gsis. If those gsis are isa irqs (the typical and default acpi
    > configuration) they will be mapped into the first 16 irqs. If those
    > first 16 gsis are not isa irqs they will be given a linux irq number
    > just past the last gsi. Allowing us the chance to use them.
    > This patchset is my attempt to straighten out our understanding of which
    > kind of irq name is used where and the cleanups used to get there.
    > Thanks to Yinghai Lu <> for taking the first stab at
    > this and finding that there is a real world problem here. This patchset
    > is inspired by his work, but little of it remains the same.
    > This patchset lies in the weird world between the acpi and x86 and ia64.
    > Since most of the changes are x86 related I think it makes most sense
    > to go via the x86 tree.
    > v2: Recognize that gsi_end is last gsi for an ioapic not one past the end.
    > Since I use gsi_end widely in my patchset a respin of many of the patches
    > made sense.
    > Eric W. Biederman (15):
    > x86 acpi/irq: Introduce apci_isa_irq_to_gsi
    > x86 acpi/irq: Teach acpi_get_override_irq to take a gsi not an isa_irq
    > x86 acpi/irq: pci device dev->irq is an isa irq not a gsi
    > x86 acpi/irq: Fix acpi_sci_ioapic_setup so it has both bus_irq and gsi
    > x86 acpi/irq: Generalize mp_config_acpi_legacy_irqs
    > x86 ioapic: Only export mp_find_ioapic and mp_find_ioapic_pin in io_apic.h
    > x86 ioapic: Fix io_apic_redir_entries to return the number of entries.
    > x86 ioapic: Fix the types of gsi values
    > x86 ioapic: Teach mp_register_ioapic to compute a global gsi_end
    > x86 ioapic: In mpparse use mp_register_ioapic
    > x86 ioapic: Move nr_ioapic_registers calculation to mp_register_ioapic.
    > x86 ioapic: Optimize pin_2_irq
    > x86 ioapic: Simplify probe_nr_irqs_gsi.
    > x86 acpi/irq: Handle isa irqs that are not identity mapped to gsi's.
    > x86 irq: Kill io_apic_renumber_irq
    > arch/ia64/kernel/acpi.c | 8 ++
    > arch/x86/include/asm/io_apic.h | 12 ++--
    > arch/x86/include/asm/mpspec.h | 10 ---
    > arch/x86/kernel/acpi/boot.c | 133 ++++++++++++++++++++++++--------------
    > arch/x86/kernel/apic/es7000_32.c | 19 ------
    > arch/x86/kernel/apic/io_apic.c | 99 +++++++++++++---------------
    > arch/x86/kernel/mpparse.c | 25 +-------
    > arch/x86/kernel/sfi.c | 4 +-
    > drivers/acpi/pci_irq.c | 8 ++-
    > include/linux/acpi.h | 5 +-
    > 10 files changed, 154 insertions(+), 169 deletions(-)


    Where are we at with this patchset?


     \ /
      Last update: 2010-05-04 01:25    [W:0.034 / U:75.476 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site