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authorPaul Mundt <lethal@linux-sh.org>2006-01-17 01:14:14 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-17 02:15:28 -0500
commitbf3a00f88c926635932c91afd90b4a0907dfbe78 (patch)
tree179a56c061461a0f3d25cd0171ba8ce90e5e7ed5 /arch/sh/kernel/irq.c
parent9d44190eae97ad4c9ce30f1084e1b0dabd646df5 (diff)
[PATCH] sh: IRQ handler updates
This moves the various IRQ controller drivers into a new subdirectory, and also extends the INTC2 IRQ handler to also deal with SH7760 and SH7780 interrupts, rather than just ST-40. The old CONFIG_SH_GENERIC has also been removed from the IRQ definitions, as new ports are expected to be based off of CONFIG_SH_UNKNOWN. Since there are plenty of incompatible machvecs, CONFIG_SH_GENERIC doesn't make sense anymore. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sh/kernel/irq.c')
-rw-r--r--arch/sh/kernel/irq.c64
1 files changed, 26 insertions, 38 deletions
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 54c171225b78..6883c00728cb 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -8,38 +8,13 @@
8 * SuperH version: Copyright (C) 1999 Niibe Yutaka 8 * SuperH version: Copyright (C) 1999 Niibe Yutaka
9 */ 9 */
10 10
11/* 11#include <linux/irq.h>
12 * IRQs are in fact implemented a bit like signal handlers for the kernel.
13 * Naturally it's not a 1:1 relation, but there are similarities.
14 */
15
16#include <linux/config.h>
17#include <linux/module.h>
18#include <linux/ptrace.h>
19#include <linux/errno.h>
20#include <linux/kernel_stat.h>
21#include <linux/signal.h>
22#include <linux/sched.h>
23#include <linux/ioport.h>
24#include <linux/interrupt.h> 12#include <linux/interrupt.h>
25#include <linux/timex.h> 13#include <linux/kernel_stat.h>
26#include <linux/mm.h>
27#include <linux/slab.h>
28#include <linux/random.h>
29#include <linux/smp.h>
30#include <linux/smp_lock.h>
31#include <linux/init.h>
32#include <linux/seq_file.h> 14#include <linux/seq_file.h>
33#include <linux/kallsyms.h>
34#include <linux/bitops.h>
35
36#include <asm/system.h>
37#include <asm/io.h>
38#include <asm/pgalloc.h>
39#include <asm/delay.h>
40#include <asm/irq.h> 15#include <asm/irq.h>
41#include <linux/irq.h> 16#include <asm/processor.h>
42 17#include <asm/cpu/mmu_context.h>
43 18
44/* 19/*
45 * 'what should we do if we get a hw irq event on an illegal vector'. 20 * 'what should we do if we get a hw irq event on an illegal vector'.
@@ -66,7 +41,7 @@ int show_interrupts(struct seq_file *p, void *v)
66 seq_putc(p, '\n'); 41 seq_putc(p, '\n');
67 } 42 }
68 43
69 if (i < ACTUAL_NR_IRQS) { 44 if (i < NR_IRQS) {
70 spin_lock_irqsave(&irq_desc[i].lock, flags); 45 spin_lock_irqsave(&irq_desc[i].lock, flags);
71 action = irq_desc[i].action; 46 action = irq_desc[i].action;
72 if (!action) 47 if (!action)
@@ -86,19 +61,32 @@ unlock:
86} 61}
87#endif 62#endif
88 63
64
89asmlinkage int do_IRQ(unsigned long r4, unsigned long r5, 65asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
90 unsigned long r6, unsigned long r7, 66 unsigned long r6, unsigned long r7,
91 struct pt_regs regs) 67 struct pt_regs regs)
92{ 68{
93 int irq; 69 int irq = r4;
94 70
95 irq_enter(); 71 irq_enter();
96 asm volatile("stc r2_bank, %0\n\t" 72
97 "shlr2 %0\n\t" 73#ifdef CONFIG_CPU_HAS_INTEVT
98 "shlr2 %0\n\t" 74 __asm__ __volatile__ (
99 "shlr %0\n\t" 75#ifdef CONFIG_CPU_HAS_SR_RB
100 "add #-16, %0\n\t" 76 "stc r2_bank, %0\n\t"
101 :"=z" (irq)); 77#else
78 "mov.l @%1, %0\n\t"
79#endif
80 "shlr2 %0\n\t"
81 "shlr2 %0\n\t"
82 "shlr %0\n\t"
83 "add #-16, %0\n\t"
84 : "=z" (irq), "=r" (r4)
85 : "1" (INTEVT)
86 : "memory"
87 );
88#endif
89
102 irq = irq_demux(irq); 90 irq = irq_demux(irq);
103 __do_IRQ(irq, &regs); 91 __do_IRQ(irq, &regs);
104 irq_exit(); 92 irq_exit();