Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754230Ab0BMBoE (ORCPT ); Fri, 12 Feb 2010 20:44:04 -0500 Received: from mga01.intel.com ([192.55.52.88]:22628 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753415Ab0BMBkP convert rfc822-to-8bit (ORCPT ); Fri, 12 Feb 2010 20:40:15 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.49,464,1262592000"; d="scan'208,223";a="772528556" From: "Pan, Jacob jun" To: "linux-kernel@vger.kernel.org" CC: Ingo Molnar , Thomas Gleixner , Arjan van de Ven , "Barnes, Jesse" , "Du, Alek" , "Tang, Feng" , "H. Peter Anvin" Date: Fri, 12 Feb 2010 17:40:13 -0800 Subject: PATCH 3/9] x86: Add pci_init_irq to x86_init Thread-Topic: PATCH 3/9] x86: Add pci_init_irq to x86_init Thread-Index: AcqsTXxmHyjv8A4QR0SchkmqdKnZ1Q== Message-ID: <43F901BD926A4E43B106BF17856F07559FB80CFF@orsmsx508.amr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5419 Lines: 169 >From cfab24ca34cb4e9de284cea8a5688f4293b4ae76 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 29 Aug 2009 17:47:33 +0200 Subject: [PATCH 3/9] x86: Add pci_init_irq to x86_init Moorestown wants to reuse pcibios_init_irq but needs to provide its own implementation of pci_enable_irq. After we distangled the init we can move the init_irq call to x86_init and remove the pci_enable_irq != NULL check in pcibios_init_irq. pci_enable_irq is compile time initialized to pirq_enable_irq and the special cases which override it (visws and acpi) set the x86_init function pointer to noop. That allows MSRT to override pci_enable_irq and otherwise run pcibios_init_irq unmodified. Signed-off-by: Thomas Gleixner Acked-by: Jesse Barnes Signed-off-by: Jacob Pan --- arch/x86/include/asm/pci_x86.h | 4 +++- arch/x86/include/asm/x86_init.h | 2 ++ arch/x86/kernel/visws_quirks.c | 1 + arch/x86/kernel/x86_init.c | 1 + arch/x86/pci/acpi.c | 1 + arch/x86/pci/irq.c | 12 ++++-------- arch/x86/pci/legacy.c | 2 +- 7 files changed, 13 insertions(+), 10 deletions(-) diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index 440124f..46511c5 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -110,7 +110,7 @@ extern void __init dmi_check_skip_isa_align(void); /* some common used subsys_initcalls */ extern int __init pci_acpi_init(void); -extern int __init pcibios_irq_init(void); +extern void __init pcibios_irq_init(void); extern int __init pcibios_init(void); extern int pci_legacy_init(void); @@ -187,6 +187,8 @@ static inline void mmio_config_writel(void __iomem *pos, u32 val) # else # define x86_default_pci_init pci_legacy_init # endif +# define x86_default_pci_init_irq pcibios_irq_init #else # define x86_default_pci_init NULL +# define x86_default_pci_init_irq NULL #endif diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index f145d84..34f61cd 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -101,9 +101,11 @@ struct x86_init_iommu { /* * struct x86_init_pci - platform specific pci init functions * @init: platform specific pci init + * @init_irq: platform specific pci irq init */ struct x86_init_pci { int (*init)(void); + void (*init_irq)(void); }; /** diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c index 843e9d3..b48ef6c 100644 --- a/arch/x86/kernel/visws_quirks.c +++ b/arch/x86/kernel/visws_quirks.c @@ -238,6 +238,7 @@ void __init visws_early_detect(void) x86_init.irqs.trap_init = visws_trap_init; x86_init.timers.timer_init = visws_time_init; x86_init.pci.init = pci_visws_init; + x86_init.pci.init_irq = x86_init_noop; /* * Install reboot quirks: diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 81faa6d..203f26f 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -74,6 +74,7 @@ struct x86_init_ops x86_init __initdata = { .pci = { .init = x86_default_pci_init, + .init_irq = x86_default_pci_init_irq, }, }; diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 73b3fe9..b53f048 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -289,6 +289,7 @@ int __init pci_acpi_init(void) acpi_irq_penalty_init(); pcibios_enable_irq = acpi_pci_irq_enable; pcibios_disable_irq = acpi_pci_irq_disable; + x86_init.pci.init_irq = x86_init_noop; if (pci_routeirq) { /* diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index 0696d50..0f40ff2 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -53,7 +53,7 @@ struct irq_router_handler { int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device); }; -int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL; +int (*pcibios_enable_irq)(struct pci_dev *dev) = pirq_enable_irq; void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL; /* @@ -1110,12 +1110,12 @@ static struct dmi_system_id __initdata pciirq_dmi_table[] = { { } }; -int __init pcibios_irq_init(void) +void __init pcibios_irq_init(void) { DBG(KERN_DEBUG "PCI: IRQ init\n"); - if (pcibios_enable_irq || raw_pci_ops == NULL) - return 0; + if (raw_pci_ops == NULL) + return; dmi_check_system(pciirq_dmi_table); @@ -1142,8 +1142,6 @@ int __init pcibios_irq_init(void) pirq_table = NULL; } - pcibios_enable_irq = pirq_enable_irq; - pcibios_fixup_irqs(); if (io_apic_assign_pci_irqs && pci_routeirq) { @@ -1157,8 +1155,6 @@ int __init pcibios_irq_init(void) for_each_pci_dev(dev) pirq_enable_irq(dev); } - - return 0; } static void pirq_penalize_isa_irq(int irq, int active) diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c index 0daf264..0db5eaf 100644 --- a/arch/x86/pci/legacy.c +++ b/arch/x86/pci/legacy.c @@ -60,7 +60,7 @@ int __init pci_subsys_init(void) pci_legacy_init(); pcibios_fixup_peer_bridges(); - pcibios_irq_init(); + x86_init.pci.init_irq(); pcibios_init(); return 0; -- 1.6.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/