---

yaml --- r: 225857 b: refs/heads/master c: 5210864 h: refs/heads/master i: 225855: 79e4c24 v: v3
git-mirror · Dec 24, 2010 · d38d2ab · d38d2ab
1 parent 9eb8e5e
commit d38d2ab
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Showing 6 changed files with 31 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a50bfe365a977f634311504484342fbfffe855c
+refs/heads/master: 521086412ee423fbdfc7da81f257239c43f707b4
diff --git a/trunk/arch/arm/Kconfig b/trunk/arch/arm/Kconfig
@@ -1022,6 +1022,11 @@ config CPU_HAS_PMU
 	default y
 	bool
 
+config MULTI_IRQ_HANDLER
+	bool
+	help
+	  Allow each machine to specify it's own IRQ handler at run time.
+
 if !MMU
 source "arch/arm/Kconfig-nommu"
 endif

diff --git a/trunk/arch/arm/include/asm/mach/arch.h b/trunk/arch/arm/include/asm/mach/arch.h
@@ -40,6 +40,9 @@ struct machine_desc {
 	void			(*init_irq)(void);
 	struct sys_timer	*timer;		/* system tick timer	*/
 	void			(*init_machine)(void);
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+	void			(*handle_irq)(struct pt_regs *);
+#endif
 };
 
 /*

diff --git a/trunk/arch/arm/include/asm/mach/irq.h b/trunk/arch/arm/include/asm/mach/irq.h
@@ -22,6 +22,10 @@ extern void (*init_arch_irq)(void);
 extern void init_FIQ(void);
 extern int show_fiq_list(struct seq_file *, void *);
 
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+extern void (*handle_arch_irq)(struct pt_regs *);
+#endif
+
 /*
  * This is for easy migration, but should be changed in the source
  */

diff --git a/trunk/arch/arm/kernel/entry-armv.S b/trunk/arch/arm/kernel/entry-armv.S
@@ -30,6 +30,14 @@
  * Interrupt handling.  Preserves r7, r8, r9
  */
 	.macro	irq_handler
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+	ldr	r5, =handle_arch_irq
+	mov	r0, sp
+	ldr	r5, [r5]
+	adr	lr, BSYM(9997f)
+	teq	r5, #0
+	movne	pc, r5
+#endif
 	get_irqnr_preamble r5, lr
 1:	get_irqnr_and_base r0, r6, r5, lr
 	movne	r1, sp
@@ -58,9 +66,8 @@
 	adrne	lr, BSYM(1b)
 	bne	do_local_timer
 #endif
-9997:
 #endif
-
+9997:
 	.endm
 
 #ifdef CONFIG_KPROBES
@@ -1245,3 +1252,9 @@ cr_alignment:
 	.space	4
 cr_no_alignment:
 	.space	4
+
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+	.globl	handle_arch_irq
+handle_arch_irq:
+	.space	4
+#endif
diff --git a/trunk/arch/arm/kernel/setup.c b/trunk/arch/arm/kernel/setup.c
@@ -875,6 +875,9 @@ void __init setup_arch(char **cmdline_p)
 	init_arch_irq = mdesc->init_irq;
 	system_timer = mdesc->timer;
 	init_machine = mdesc->init_machine;
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+	handle_arch_irq = mdesc->handle_irq;
+#endif
 
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)