projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/arch/m32r/kernel/irq.c | |
| 3 | * | |
| 4 | * Copyright (c) 2003, 2004 Hitoshi Yamamoto | |
| 5 | * Copyright (c) 2004 Hirokazu Takata <takata at linux-m32r.org> | |
| 6 | */ | |
| 7 | ||
| 8 | /* | |
| 9 | * linux/arch/i386/kernel/irq.c | |
| 10 | * | |
| 11 | * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar | |
| 12 | * | |
| 13 | * This file contains the lowest level m32r-specific interrupt | |
| 14 | * entry and irq statistics code. All the remaining irq logic is | |
| 15 | * done by the generic kernel/irq/ code and in the | |
| 16 | * m32r-specific irq controller code. | |
| 17 | */ | |
| 18 | ||
| 19 | #include <linux/kernel_stat.h> | |
| 20 | #include <linux/interrupt.h> | |
| 21 | #include <linux/seq_file.h> | |
| 22 | #include <linux/module.h> | |
| 23 | #include <asm/uaccess.h> | |
| 24 | ||
| 25 | atomic_t irq_err_count; | |
| 26 | atomic_t irq_mis_count; | |
| 27 | ||
| 28 | /* | |
| 29 | * Generic, controller-independent functions: | |
| 30 | */ | |
| 31 | ||
| 32 | int show_interrupts(struct seq_file *p, void *v) | |
| 33 | { | |
| 34 | int i = *(loff_t *) v, j; | |
| 35 | struct irqaction * action; | |
| 36 | unsigned long flags; | |
| 37 | ||
| 38 | if (i == 0) { | |
| 39 | seq_printf(p, " "); | |
| 40 | for (j=0; j<NR_CPUS; j++) | |
| 41 | if (cpu_online(j)) | |
| 42 | seq_printf(p, "CPU%d ",j); | |
| 43 | seq_putc(p, '\n'); | |
| 44 | } | |
| 45 | ||
| 46 | if (i < NR_IRQS) { | |
| 47 | spin_lock_irqsave(&irq_desc[i].lock, flags); | |
| 48 | action = irq_desc[i].action; | |
| 49 | if (!action) | |
| 50 | goto skip; | |
| 51 | seq_printf(p, "%3d: ",i); | |
| 52 | #ifndef CONFIG_SMP | |
| 53 | seq_printf(p, "%10u ", kstat_irqs(i)); | |
| 54 | #else | |
| 55 | for (j = 0; j < NR_CPUS; j++) | |
| 56 | if (cpu_online(j)) | |
| 57 | seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); | |
| 58 | #endif | |
| 59 | seq_printf(p, " %14s", irq_desc[i].handler->typename); | |
| 60 | seq_printf(p, " %s", action->name); | |
| 61 | ||
| 62 | for (action=action->next; action; action = action->next) | |
| 63 | seq_printf(p, ", %s", action->name); | |
| 64 | ||
| 65 | seq_putc(p, '\n'); | |
| 66 | skip: | |
| 67 | spin_unlock_irqrestore(&irq_desc[i].lock, flags); | |
| 68 | } else if (i == NR_IRQS) { | |
| 69 | seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); | |
| 70 | seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count)); | |
| 71 | } | |
| 72 | return 0; | |
| 73 | } | |
| 74 | ||
| 75 | /* | |
| 76 | * do_IRQ handles all normal device IRQ's (the special | |
| 77 | * SMP cross-CPU interrupts have their own specific | |
| 78 | * handlers). | |
| 79 | */ | |
| 80 | asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs) | |
| 81 | { | |
| 82 | irq_enter(); | |
| 83 | ||
| 84 | #ifdef CONFIG_DEBUG_STACKOVERFLOW | |
| 85 | /* FIXME M32R */ | |
| 86 | #endif | |
| 87 | __do_IRQ(irq, regs); | |
| 88 | irq_exit(); | |
| 89 | ||
| 90 | return 1; | |
| 91 | } |