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authorShaohua Li <shaohua.li@intel.com>2007-11-17 01:05:28 -0500
committerLen Brown <len.brown@intel.com>2007-11-20 01:16:29 -0500
commit61fd47e0c84764f49b4e52bfd8170fac52636f00 (patch)
treec94c7b8c43dee4bb123900f49ef781607ee0d6fb /arch/x86/kernel/io_apic_64.c
parentf0714d20234062bd0a8f49a6b32f7d1d7f3c2943 (diff)
ACPI: fix two IRQ8 issues in IOAPIC mode
Use mp_irqs[] to get PNP device's interrupt polarity and trigger. There are two reasons to do this: 1. BIOS bug for PNP interrupt 2. BIOS explictly does override mp_irqs[] should cover all the cases. http://bugzilla.kernel.org/show_bug.cgi?id=5243 http://bugzilla.kernel.org/show_bug.cgi?id=7679 http://bugzilla.kernel.org/show_bug.cgi?id=9153 [lenb: fixed !IOAPIC and 64-bit !SMP builds] Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/kernel/io_apic_64.c')
-rw-r--r--arch/x86/kernel/io_apic_64.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 953328b55a3..435a8c9b55f 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -546,7 +546,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
#define default_PCI_trigger(idx) (1)
#define default_PCI_polarity(idx) (1)
-static int __init MPBIOS_polarity(int idx)
+static int MPBIOS_polarity(int idx)
{
int bus = mp_irqs[idx].mpc_srcbus;
int polarity;
@@ -2222,8 +2222,27 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int p
return 0;
}
-#endif /* CONFIG_ACPI */
+int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
+{
+ int i;
+
+ if (skip_ioapic_setup)
+ return -1;
+
+ for (i = 0; i < mp_irq_entries; i++)
+ if (mp_irqs[i].mpc_irqtype == mp_INT &&
+ mp_irqs[i].mpc_srcbusirq == bus_irq)
+ break;
+ if (i >= mp_irq_entries)
+ return -1;
+
+ *trigger = irq_trigger(i);
+ *polarity = irq_polarity(i);
+ return 0;
+}
+
+#endif /* CONFIG_ACPI */
/*
* This function currently is only a helper for the i386 smp boot process where
@@ -2260,3 +2279,4 @@ void __init setup_ioapic_dest(void)
}
}
#endif
+