diff options
| author | John Keller <jpk@sgi.com> | 2006-12-22 11:50:04 -0600 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-01-04 12:18:19 -0500 |
| commit | 3948ec9406f9a60a43d63f23f6f5284db6529b9c (patch) | |
| tree | 85bad329fb23be9527492d773dc2ed64f3908d60 | |
| parent | a7ec3f5289681e9d63b65db5f56857f998812b4b (diff) | |
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 <jpk@sgi.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | arch/ia64/kernel/acpi.c | 3 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/io_acpi_init.c | 3 | ||||
| -rw-r--r-- | drivers/acpi/bus.c | 3 | ||||
| -rw-r--r-- | include/linux/acpi.h | 1 |
4 files changed, 10 insertions, 0 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 73ef4a85b86..ef2fe474f10 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 99d7f278612..cb96b4ea7df 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) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 279c4bac92e..766332e4559 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -561,6 +561,9 @@ static int __init acpi_bus_init_irq(void) case ACPI_IRQ_MODEL_IOSAPIC: message = "IOSAPIC"; break; + case ACPI_IRQ_MODEL_PLATFORM: + message = "platform specific model"; + break; default: printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); return -ENODEV; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 2b0c955590f..91f1f236387 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -47,6 +47,7 @@ enum acpi_irq_model_id { ACPI_IRQ_MODEL_PIC = 0, ACPI_IRQ_MODEL_IOAPIC, ACPI_IRQ_MODEL_IOSAPIC, + ACPI_IRQ_MODEL_PLATFORM, ACPI_IRQ_MODEL_COUNT }; |