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Subject[RFC patch 13/32] x86: Move pre_intr_init to platform_setup
Replace the quirk machinery by a platform setup function which
defaults to the standard implementation. This is also a preparatory
patch for Moorestown support which needs to replace the default
init_ISA_irqs as well.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/include/asm/irq.h | 2 ++
arch/x86/include/asm/platform.h | 10 ++++++++++
arch/x86/include/asm/setup.h | 1 -
arch/x86/kernel/apic/numaq_32.c | 1 -
arch/x86/kernel/irqinit.c | 24 ++----------------------
arch/x86/kernel/platform_setup.c | 5 +++++
arch/x86/kernel/visws_quirks.c | 10 +++-------
7 files changed, 22 insertions(+), 31 deletions(-)
Index: linux-2.6/arch/x86/include/asm/irq.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/irq.h
+++ linux-2.6/arch/x86/include/asm/irq.h
@@ -47,4 +47,6 @@ extern unsigned int do_IRQ(struct pt_reg
extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
extern int vector_used_by_percpu_irq(unsigned int vector);

+extern void init_ISA_irqs(void);
+
#endif /* _ASM_X86_IRQ_H */
Index: linux-2.6/arch/x86/include/asm/platform.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/platform.h
+++ linux-2.6/arch/x86/include/asm/platform.h
@@ -50,12 +50,22 @@ struct platform_setup_resources {
};

/**
+ * struct platform_setup_irqs - platform specific interrupt setup
+ * @pre_vector_init: init code to run before interrupt vectors
+ * are set up.
+ */
+struct platform_setup_irqs {
+ void (*pre_vector_init)(void);
+};
+
+/**
* struct platform_setup_ops - functions for platform specific setup
*
*/
struct platform_setup_ops {
struct platform_setup_resources resources;
struct platform_setup_mpparse mpparse;
+ struct platform_setup_irqs irqs;
struct platform_setup_quirks quirks;
};

Index: linux-2.6/arch/x86/include/asm/setup.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/setup.h
+++ linux-2.6/arch/x86/include/asm/setup.h
@@ -16,7 +16,6 @@
struct x86_quirks {
int (*arch_pre_time_init)(void);
int (*arch_time_init)(void);
- int (*arch_pre_intr_init)(void);
int (*arch_intr_init)(void);
int (*arch_trap_init)(void);
};
Index: linux-2.6/arch/x86/kernel/apic/numaq_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/apic/numaq_32.c
+++ linux-2.6/arch/x86/kernel/apic/numaq_32.c
@@ -265,7 +265,6 @@ static void __init smp_read_mpc_oem(stru
static struct x86_quirks numaq_x86_quirks __initdata = {
.arch_pre_time_init = numaq_pre_time_init,
.arch_time_init = NULL,
- .arch_pre_intr_init = NULL,
.arch_intr_init = NULL,
.arch_trap_init = NULL,
};
Index: linux-2.6/arch/x86/kernel/irqinit.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/irqinit.c
+++ linux-2.6/arch/x86/kernel/irqinit.c
@@ -116,7 +116,7 @@ int vector_used_by_percpu_irq(unsigned i
return 0;
}

-static void __init init_ISA_irqs(void)
+void __init init_ISA_irqs(void)
{
int i;

@@ -213,32 +213,12 @@ static void __init apic_intr_init(void)
#endif
}

-/**
- * x86_quirk_pre_intr_init - initialisation prior to setting up interrupt vectors
- *
- * Description:
- * Perform any necessary interrupt initialisation prior to setting up
- * the "ordinary" interrupt call gates. For legacy reasons, the ISA
- * interrupts should be initialised here if the machine emulates a PC
- * in any way.
- **/
-static void __init x86_quirk_pre_intr_init(void)
-{
-#ifdef CONFIG_X86_32
- if (x86_quirks->arch_pre_intr_init) {
- if (x86_quirks->arch_pre_intr_init())
- return;
- }
-#endif
- init_ISA_irqs();
-}
-
void __init native_init_IRQ(void)
{
int i;

/* Execute any quirks before the call gates are initialised: */
- x86_quirk_pre_intr_init();
+ platform_setup.irqs.pre_vector_init();

apic_intr_init();

Index: linux-2.6/arch/x86/kernel/platform_setup.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/platform_setup.c
+++ linux-2.6/arch/x86/kernel/platform_setup.c
@@ -9,6 +9,7 @@
#include <asm/mpspec.h>
#include <asm/setup.h>
#include <asm/e820.h>
+#include <asm/irq.h>

void __cpuinit platform_setup_noop(void) { }
void __init platform_setup_uint_noop(unsigned int unused) { }
@@ -35,6 +36,10 @@ struct __initdata platform_setup_ops pla
.get_smp_config = default_get_smp_config,
},

+ .irqs = {
+ .pre_vector_init = init_ISA_irqs,
+ },
+
.quirks = {
.mpc_record = platform_setup_uint_noop,
},
Index: linux-2.6/arch/x86/kernel/visws_quirks.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/visws_quirks.c
+++ linux-2.6/arch/x86/kernel/visws_quirks.c
@@ -73,14 +73,10 @@ static int __init visws_time_init(void)
return 0;
}

-static int __init visws_pre_intr_init(void)
+/* Replaces the default init_ISA_irqs in the generic setup */
+static void __init visws_pre_intr_init(void)
{
init_VISWS_APIC_irqs();
-
- /*
- * We dont want ISA irqs to be set up by the generic code:
- */
- return 1;
}

/* Quirk for machine specific memory setup. */
@@ -232,7 +228,6 @@ static int visws_trap_init(void);

static struct x86_quirks visws_x86_quirks __initdata = {
.arch_time_init = visws_time_init,
- .arch_pre_intr_init = visws_pre_intr_init,
.arch_intr_init = NULL,
.arch_trap_init = visws_trap_init,
};
@@ -257,6 +252,7 @@ void __init visws_early_detect(void)
platform_setup.resources.memory_setup = visws_memory_setup;
platform_setup.mpparse.get_smp_config = visws_get_smp_config;
platform_setup.mpparse.find_smp_config = visws_find_smp_config;
+ platform_setup.irqs.pre_vector_init = visws_pre_intr_init;

/*
* Install reboot quirks:



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