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authorThomas Gleixner <tglx@linutronix.de>2009-08-29 17:47:33 +0200
committerH. Peter Anvin <hpa@zytor.com>2010-02-19 16:12:33 -0800
commitab3b37937e8f4fb38dc9780b7bc3fd3c5195cca3 (patch)
treed1d96406b6bfcfb93fcc71ea825c7f5c53cf9f06
parentb72d0db9dd41da1f2ec6274b03e8909583c64e41 (diff)
downloadblackbird-op-linux-ab3b37937e8f4fb38dc9780b7bc3fd3c5195cca3.tar.gz
blackbird-op-linux-ab3b37937e8f4fb38dc9780b7bc3fd3c5195cca3.zip
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 <tglx@linutronix.de> LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80CFF@orsmsx508.amr.corp.intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-rw-r--r--arch/x86/include/asm/pci_x86.h4
-rw-r--r--arch/x86/include/asm/x86_init.h2
-rw-r--r--arch/x86/kernel/visws_quirks.c1
-rw-r--r--arch/x86/kernel/x86_init.c1
-rw-r--r--arch/x86/pci/acpi.c1
-rw-r--r--arch/x86/pci/irq.c12
-rw-r--r--arch/x86/pci/legacy.c2
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 440124f1224d..46511c5be456 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 f145d843f03d..34f61cd56f3b 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 843e9d30a1e3..b48ef6c0d716 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 81faa6d67d69..203f26fb7f33 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 73b3fe9aa716..b53f0487e2d3 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 0696d506c4ad..0f40ff20dd67 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 0daf264ddb6c..0db5eaf54560 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;
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