From 3948ec9406f9a60a43d63f23f6f5284db6529b9c Mon Sep 17 00:00:00 2001 From: John Keller Date: Fri, 22 Dec 2006 11:50:04 -0600 Subject: ACPI: Altix: ACPI _PRT support Provide ACPI _PRT support for SN Altix systems. The SN Altix platform does not conform to the IOSAPIC IRQ routing model, so a new acpi_irq_model (ACPI_IRQ_MODEL_PLATFORM) has been defined. The SN platform specific code sets acpi_irq_model to this new value, and keys off of it in acpi_register_gsi() to avoid the iosapic code path. Signed-off-by: John Keller Signed-off-by: Len Brown --- arch/ia64/kernel/acpi.c | 3 +++ arch/ia64/sn/kernel/io_acpi_init.c | 3 +++ 2 files changed, 6 insertions(+) (limited to 'arch/ia64') diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 73ef4a85..ef2fe47 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -590,6 +590,9 @@ void __init acpi_numa_arch_fixup(void) */ int acpi_register_gsi(u32 gsi, int triggering, int polarity) { + if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) + return gsi; + if (has_8259 && gsi < 16) return isa_irq_to_vector(gsi); diff --git a/arch/ia64/sn/kernel/io_acpi_init.c b/arch/ia64/sn/kernel/io_acpi_init.c index 99d7f27..cb96b4e 100644 --- a/arch/ia64/sn/kernel/io_acpi_init.c +++ b/arch/ia64/sn/kernel/io_acpi_init.c @@ -223,6 +223,9 @@ sn_io_acpi_init(void) u64 result; s64 status; + /* SN Altix does not follow the IOSAPIC IRQ routing model */ + acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM; + acpi_bus_register_driver(&acpi_sn_hubdev_driver); status = sal_ioif_init(&result); if (status || result) -- cgit v1.1