diff options
Diffstat (limited to 'arch/ppc')
| -rw-r--r-- | arch/ppc/kernel/Makefile | 5 | ||||
| -rw-r--r-- | arch/ppc/kernel/irq.c | 165 | ||||
| -rw-r--r-- | arch/ppc/kernel/ppc_ksyms.c | 1 | ||||
| -rw-r--r-- | arch/ppc/platforms/pmac_pic.c | 3 |
4 files changed, 5 insertions, 169 deletions
diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile index 76a55a438f23..17a4da65e275 100644 --- a/arch/ppc/kernel/Makefile +++ b/arch/ppc/kernel/Makefile @@ -12,7 +12,7 @@ extra-$(CONFIG_6xx) += idle_6xx.o extra-$(CONFIG_POWER4) += idle_power4.o extra-y += vmlinux.lds -obj-y := entry.o traps.o irq.o idle.o time.o misc.o \ +obj-y := entry.o traps.o idle.o time.o misc.o \ process.o align.o \ setup.o \ ppc_htab.o @@ -38,8 +38,7 @@ endif # These are here while we do the architecture merge else -obj-y := irq.o idle.o \ - align.o +obj-y := idle.o align.o obj-$(CONFIG_6xx) += l2cr.o cpu_setup_6xx.o obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o obj-$(CONFIG_MODULES) += module.o diff --git a/arch/ppc/kernel/irq.c b/arch/ppc/kernel/irq.c deleted file mode 100644 index fbb2b9f8922c..000000000000 --- a/arch/ppc/kernel/irq.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * arch/ppc/kernel/irq.c - * - * Derived from arch/i386/kernel/irq.c - * Copyright (C) 1992 Linus Torvalds - * Adapted from arch/i386 by Gary Thomas - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) - * Updated and modified by Cort Dougan <cort@fsmlabs.com> - * Copyright (C) 1996-2001 Cort Dougan - * Adapted for Power Macintosh by Paul Mackerras - * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au) - * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk). - * - * This file contains the code used by various IRQ handling routines: - * asking for different IRQ's should be done through these routines - * instead of just grabbing them. Thus setups with different IRQ numbers - * shouldn't result in any weird surprises, and installing new handlers - * should be easier. - * - * The MPC8xx has an interrupt mask in the SIU. If a bit is set, the - * interrupt is _enabled_. As expected, IRQ0 is bit 0 in the 32-bit - * mask register (of which only 16 are defined), hence the weird shifting - * and complement of the cached_irq_mask. I want to be able to stuff - * this right into the SIU SMASK register. - * Many of the prep/chrp functions are conditional compiled on CONFIG_8xx - * to reduce code space and undefined function references. - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/threads.h> -#include <linux/kernel_stat.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ptrace.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/timex.h> -#include <linux/config.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/irq.h> -#include <linux/proc_fs.h> -#include <linux/random.h> -#include <linux/seq_file.h> -#include <linux/cpumask.h> -#include <linux/profile.h> -#include <linux/bitops.h> - -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/irq.h> -#include <asm/cache.h> -#include <asm/prom.h> -#include <asm/ptrace.h> -#include <asm/machdep.h> - -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) - -extern atomic_t ipi_recv; -extern atomic_t ipi_sent; - -#define MAXCOUNT 10000000 - -int ppc_spurious_interrupts = 0; -struct irqaction *ppc_irq_action[NR_IRQS]; -unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; -unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; -atomic_t ppc_n_lost_interrupts; - -#ifdef CONFIG_TAU_INT -extern int tau_initialized; -extern int tau_interrupts(int); -#endif - -int show_interrupts(struct seq_file *p, void *v) -{ - int i = *(loff_t *) v, j; - struct irqaction * action; - unsigned long flags; - - if (i == 0) { - seq_puts(p, " "); - for (j=0; j<NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "CPU%d ", j); - seq_putc(p, '\n'); - } - - if (i < NR_IRQS) { - spin_lock_irqsave(&irq_desc[i].lock, flags); - action = irq_desc[i].action; - if ( !action || !action->handler ) - goto skip; - seq_printf(p, "%3d: ", i); -#ifdef CONFIG_SMP - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", - kstat_cpu(j).irqs[i]); -#else - seq_printf(p, "%10u ", kstat_irqs(i)); -#endif /* CONFIG_SMP */ - if (irq_desc[i].handler) - seq_printf(p, " %s ", irq_desc[i].handler->typename); - else - seq_puts(p, " None "); - seq_printf(p, "%s", (irq_desc[i].status & IRQ_LEVEL) ? "Level " : "Edge "); - seq_printf(p, " %s", action->name); - for (action = action->next; action; action = action->next) - seq_printf(p, ", %s", action->name); - seq_putc(p, '\n'); -skip: - spin_unlock_irqrestore(&irq_desc[i].lock, flags); - } else if (i == NR_IRQS) { -#ifdef CONFIG_TAU_INT - if (tau_initialized){ - seq_puts(p, "TAU: "); - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", tau_interrupts(j)); - seq_puts(p, " PowerPC Thermal Assist (cpu temp)\n"); - } -#endif -#if defined(CONFIG_SMP) && !defined(CONFIG_PPC_MERGE) - /* should this be per processor send/receive? */ - seq_printf(p, "IPI (recv/sent): %10u/%u\n", - atomic_read(&ipi_recv), atomic_read(&ipi_sent)); -#endif - seq_printf(p, "BAD: %10u\n", ppc_spurious_interrupts); - } - return 0; -} - -void do_IRQ(struct pt_regs *regs) -{ - int irq, first = 1; - irq_enter(); - - /* - * Every platform is required to implement ppc_md.get_irq. - * This function will either return an irq number or -1 to - * indicate there are no more pending. But the first time - * through the loop this means there wasn't and IRQ pending. - * The value -2 is for buggy hardware and means that this IRQ - * has already been handled. -- Tom - */ - while ((irq = ppc_md.get_irq(regs)) >= 0) { - __do_IRQ(irq, regs); - first = 0; - } - if (irq != -2 && first) - /* That's not SMP safe ... but who cares ? */ - ppc_spurious_interrupts++; - irq_exit(); -} - -void __init init_IRQ(void) -{ - ppc_md.init_IRQ(); -} diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c index fc0d05c69895..6550de73a855 100644 --- a/arch/ppc/kernel/ppc_ksyms.c +++ b/arch/ppc/kernel/ppc_ksyms.c @@ -78,7 +78,6 @@ EXPORT_SYMBOL(program_check_exception); EXPORT_SYMBOL(single_step_exception); EXPORT_SYMBOL(sys_sigreturn); EXPORT_SYMBOL(ppc_n_lost_interrupts); -EXPORT_SYMBOL(ppc_lost_interrupts); EXPORT_SYMBOL(ISA_DMA_THRESHOLD); EXPORT_SYMBOL(DMA_MODE_READ); diff --git a/arch/ppc/platforms/pmac_pic.c b/arch/ppc/platforms/pmac_pic.c index 9f2d95ea8564..4742bf609357 100644 --- a/arch/ppc/platforms/pmac_pic.c +++ b/arch/ppc/platforms/pmac_pic.c @@ -75,6 +75,9 @@ static DEFINE_SPINLOCK(pmac_pic_lock); #define GATWICK_IRQ_POOL_SIZE 10 static struct interrupt_info gatwick_int_pool[GATWICK_IRQ_POOL_SIZE]; +#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) +static unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; + /* * Mark an irq as "lost". This is only used on the pmac * since it can lose interrupts (see pmac_set_irq_mask). |