From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: [PATCH 1/7] ACPI: Altix: ACPI _PRT support Date: Thu, 11 Jan 2007 04:11:42 -0500 Message-ID: <11685067091916-git-send-email-len.brown@intel.com> References: <11685067081383-git-send-email-len.brown@intel.com> Reply-To: Len Brown Return-path: Received: from mga01.intel.com ([192.55.52.88]:7019 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030243AbXAKJLw (ORCPT ); Thu, 11 Jan 2007 04:11:52 -0500 In-Reply-To: <11685067081383-git-send-email-len.brown@intel.com> Message-Id: <3948ec9406f9a60a43d63f23f6f5284db6529b9c.1168506584.git.len.brown@intel.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Cc: John Keller , Len Brown From: John Keller 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 +++ drivers/acpi/bus.c | 3 +++ 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 73ef4a8..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) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 279c4ba..766332e 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 2b0c955..91f1f23 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 }; -- 1.4.4.4.ge05d