From d890d73995257b4e10cdd7d55bad80e34a71ba22 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Sun, 11 Sep 2011 11:28:04 +0200 Subject: m68k/irq: Remove obsolete m68k irq framework Signed-off-by: Geert Uytterhoeven --- arch/m68k/kernel/Makefile | 10 +- arch/m68k/kernel/ints.c | 297 ---------------------------------------------- 2 files changed, 2 insertions(+), 305 deletions(-) (limited to 'arch/m68k/kernel') diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile index 1414257..c569619 100644 --- a/arch/m68k/kernel/Makefile +++ b/arch/m68k/kernel/Makefile @@ -6,11 +6,10 @@ extra-$(CONFIG_MMU) := head.o extra-$(CONFIG_SUN3) := sun3-head.o extra-y += vmlinux.lds -obj-y := entry.o m68k_ksyms.o module.o process.o ptrace.o setup.o signal.o \ - sys_m68k.o syscalltable.o time.o traps.o +obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \ + signal.o sys_m68k.o syscalltable.o time.o traps.o obj-$(CONFIG_MMU) += ints.o vectors.o -devres-$(CONFIG_MMU) = ../../../kernel/irq/devres.o ifndef CONFIG_MMU_SUN3 obj-y += dma.o @@ -18,9 +17,4 @@ endif ifndef CONFIG_MMU obj-y += init_task.o endif -ifdef CONFIG_GENERIC_HARDIRQS -obj-y += irq.o -else -obj-y += devres.o -endif diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c index cea439f..e2b056b 100644 --- a/arch/m68k/kernel/ints.c +++ b/arch/m68k/kernel/ints.c @@ -31,20 +31,6 @@ extern u32 auto_irqhandler_fixup[]; extern u32 user_irqhandler_fixup[]; extern u16 user_irqvec_fixup[]; -#ifndef CONFIG_GENERIC_HARDIRQS -/* table for system interrupt handlers */ -static struct irq_data *irq_list[NR_IRQS]; -static struct irq_chip *irq_chip[NR_IRQS]; -static int irq_depth[NR_IRQS]; - -static inline int irq_set_chip(unsigned int irq, struct irq_chip *chip) -{ - irq_chip[irq] = chip; - return 0; -} -#define irq_set_chip_and_handler(irq, chip, dummy) irq_set_chip(irq, chip) -#endif /* !CONFIG_GENERIC_HARDIRQS */ - static int m68k_first_user_vec; static struct irq_chip auto_irq_chip = { @@ -59,11 +45,6 @@ static struct irq_chip user_irq_chip = { .irq_shutdown = m68k_irq_shutdown, }; -#ifndef CONFIG_GENERIC_HARDIRQS -#define NUM_IRQ_NODES 100 -static struct irq_data nodes[NUM_IRQ_NODES]; -#endif /* !CONFIG_GENERIC_HARDIRQS */ - /* * void init_IRQ(void) * @@ -133,8 +114,6 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt, flush_icache(); } -#ifdef CONFIG_GENERIC_HARDIRQS - /** * m68k_setup_irq_controller * @chip: irq chip which controls specified irq @@ -160,198 +139,6 @@ void m68k_setup_irq_controller(struct irq_chip *chip, } } -#else /* !CONFIG_GENERIC_HARDIRQS */ - -/** - * m68k_setup_irq_chip - * @contr: irq controller which controls specified irq - * @irq: first irq to be managed by the controller - * - * Change the controller for the specified range of irq, which will be used to - * manage these irq. auto/user irq already have a default controller, which can - * be changed as well, but the controller probably should use m68k_irq_startup/ - * m68k_irq_shutdown. - */ -void m68k_setup_irq_chip(struct irq_chip *contr, unsigned int irq, - unsigned int cnt) -{ - int i; - - for (i = 0; i < cnt; i++) - irq_set_chip(irq + i, contr); -} - -struct irq_data *new_irq_node(void) -{ - struct irq_data *node; - short i; - - for (node = nodes, i = NUM_IRQ_NODES-1; i >= 0; node++, i--) { - if (!node->handler) { - memset(node, 0, sizeof(*node)); - return node; - } - } - - printk ("new_irq_node: out of nodes\n"); - return NULL; -} - -static int m68k_setup_irq(unsigned int irq, struct irq_data *node) -{ - struct irq_chip *contr; - struct irq_data **prev; - unsigned long flags; - - if (irq >= NR_IRQS || !(contr = irq_chip[irq])) { - printk("%s: Incorrect IRQ %d from %s\n", - __func__, irq, node->devname); - return -ENXIO; - } - - local_irq_save(flags); - - prev = irq_list + irq; - if (*prev) { - /* Can't share interrupts unless both agree to */ - if (!((*prev)->flags & node->flags & IRQF_SHARED)) { - local_irq_restore(flags); - return -EBUSY; - } - while (*prev) - prev = &(*prev)->next; - } - - if (!irq_list[irq]) { - if (contr->irq_startup) - contr->irq_startup(node); - else - contr->irq_enable(node); - } - node->next = NULL; - *prev = node; - - local_irq_restore(flags); - - return 0; -} - -int request_irq(unsigned int irq, - irq_handler_t handler, - unsigned long flags, const char *devname, void *dev_id) -{ - struct irq_data *node; - int res; - - node = new_irq_node(); - if (!node) - return -ENOMEM; - - node->irq = irq; - node->handler = handler; - node->flags = flags; - node->dev_id = dev_id; - node->devname = devname; - - res = m68k_setup_irq(irq, node); - if (res) - node->handler = NULL; - - return res; -} - -EXPORT_SYMBOL(request_irq); - -void free_irq(unsigned int irq, void *dev_id) -{ - struct irq_chip *contr; - struct irq_data **p, *node; - unsigned long flags; - - if (irq >= NR_IRQS || !(contr = irq_chip[irq])) { - printk("%s: Incorrect IRQ %d\n", __func__, irq); - return; - } - - local_irq_save(flags); - - p = irq_list + irq; - while ((node = *p)) { - if (node->dev_id == dev_id) - break; - p = &node->next; - } - - if (node) { - *p = node->next; - node->handler = NULL; - } else - printk("%s: Removing probably wrong IRQ %d\n", - __func__, irq); - - if (!irq_list[irq]) { - if (contr->irq_shutdown) - contr->irq_shutdown(node); - else - contr->irq_disable(node); - } - - local_irq_restore(flags); -} - -EXPORT_SYMBOL(free_irq); - -void enable_irq(unsigned int irq) -{ - struct irq_chip *contr; - unsigned long flags; - - if (irq >= NR_IRQS || !(contr = irq_chip[irq])) { - printk("%s: Incorrect IRQ %d\n", - __func__, irq); - return; - } - - local_irq_save(flags); - if (irq_depth[irq]) { - if (!--irq_depth[irq]) { - if (contr->irq_enable) - contr->irq_enable(irq_list[irq]); - } - } else - WARN_ON(1); - local_irq_restore(flags); -} - -EXPORT_SYMBOL(enable_irq); - -void disable_irq(unsigned int irq) -{ - struct irq_chip *contr; - unsigned long flags; - - if (irq >= NR_IRQS || !(contr = irq_chip[irq])) { - printk("%s: Incorrect IRQ %d\n", - __func__, irq); - return; - } - - local_irq_save(flags); - if (!irq_depth[irq]++) { - if (contr->irq_disable) - contr->irq_disable(irq_list[irq]); - } - local_irq_restore(flags); -} - -EXPORT_SYMBOL(disable_irq); - -void disable_irq_nosync(unsigned int irq) __attribute__((alias("disable_irq"))); - -EXPORT_SYMBOL(disable_irq_nosync); - -#endif /* !CONFIG_GENERIC_HARDIRQS */ - unsigned int m68k_irq_startup_irq(unsigned int irq) { if (irq <= IRQ_AUTO_7) @@ -377,36 +164,6 @@ void m68k_irq_shutdown(struct irq_data *data) } -#ifndef CONFIG_GENERIC_HARDIRQS - -/* - * Do we need these probe functions on the m68k? - * - * ... may be useful with ISA devices - */ -unsigned long probe_irq_on (void) -{ -#ifdef CONFIG_Q40 - if (MACH_IS_Q40) - return q40_probe_irq_on(); -#endif - return 0; -} - -EXPORT_SYMBOL(probe_irq_on); - -int probe_irq_off (unsigned long irqs) -{ -#ifdef CONFIG_Q40 - if (MACH_IS_Q40) - return q40_probe_irq_off(irqs); -#endif - return 0; -} - -EXPORT_SYMBOL(probe_irq_off); -#endif /* CONFIG_GENERIC_HARDIRQS */ - unsigned int irq_canonicalize(unsigned int irq) { #ifdef CONFIG_Q40 @@ -418,63 +175,9 @@ unsigned int irq_canonicalize(unsigned int irq) EXPORT_SYMBOL(irq_canonicalize); -#ifndef CONFIG_GENERIC_HARDIRQS -void generic_handle_irq(unsigned int irq) -{ - struct irq_data *node; - kstat_cpu(0).irqs[irq]++; - node = irq_list[irq]; - do { - node->handler(irq, node->dev_id); - node = node->next; - } while (node); -} - -asmlinkage void do_IRQ(int irq, struct pt_regs *regs) -{ - struct pt_regs *old_regs; - old_regs = set_irq_regs(regs); - generic_handle_irq(irq); - set_irq_regs(old_regs); -} - -asmlinkage void handle_badint(struct pt_regs *regs) -{ - kstat_cpu(0).irqs[0]++; - printk("unexpected interrupt from %u\n", regs->vector); -} - -int show_interrupts(struct seq_file *p, void *v) -{ - struct irq_chip *contr; - struct irq_data *node; - int i = *(loff_t *) v; - - /* autovector interrupts */ - if (irq_list[i]) { - contr = irq_chip[i]; - node = irq_list[i]; - seq_printf(p, "%-8s %3u: %10u %s", contr->name, i, kstat_cpu(0).irqs[i], node->devname); - while ((node = node->next)) - seq_printf(p, ", %s", node->devname); - seq_puts(p, "\n"); - } - return 0; -} - -#ifdef CONFIG_PROC_FS -void init_irq_proc(void) -{ - /* Insert /proc/irq driver here */ -} -#endif - -#else /* CONFIG_GENERIC_HARDIRQS */ asmlinkage void handle_badint(struct pt_regs *regs) { atomic_inc(&irq_err_count); pr_warn("unexpected interrupt from %u\n", regs->vector); } - -#endif /* CONFIG_GENERIC_HARDIRQS */ -- cgit v1.1