diff options
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c (renamed from arch/ppc64/kernel/irq.c) | 265 | ||||
| -rw-r--r-- | arch/powerpc/kernel/misc_64.S | 8 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup.h | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/irq.c | 24 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/pic.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/xics.c | 1 | ||||
| -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 | ||||
| -rw-r--r-- | arch/ppc64/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/ppc64/kernel/misc.S | 8 | ||||
| -rw-r--r-- | include/asm-powerpc/hw_irq.h | 1 | ||||
| -rw-r--r-- | include/asm-powerpc/irq.h | 5 |
18 files changed, 164 insertions, 341 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 103cb81..92cfabf 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -12,7 +12,7 @@ CFLAGS_btext.o += -fPIC endif obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ - signal_32.o pmc.o + irq.o signal_32.o pmc.o obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \ signal_64.o ptrace32.o systbl.o \ paca.o ioctl32.o cpu_setup_power4.o \ diff --git a/arch/ppc64/kernel/irq.c b/arch/powerpc/kernel/irq.c index 8747458..4b79406 100644 --- a/arch/ppc64/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -5,12 +5,12 @@ * 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@cs.nmt.edu) - * Copyright (C) 1996 Cort Dougan + * 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 program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version @@ -21,6 +21,14 @@ * 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> @@ -29,6 +37,7 @@ #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> @@ -40,9 +49,13 @@ #include <linux/irq.h> #include <linux/proc_fs.h> #include <linux/random.h> -#include <linux/kallsyms.h> +#include <linux/seq_file.h> +#include <linux/cpumask.h> #include <linux/profile.h> #include <linux/bitops.h> +#ifdef CONFIG_PPC64 +#include <linux/kallsyms.h> +#endif #include <asm/uaccess.h> #include <asm/system.h> @@ -52,35 +65,54 @@ #include <asm/cache.h> #include <asm/prom.h> #include <asm/ptrace.h> -#include <asm/iseries/it_lp_queue.h> #include <asm/machdep.h> +#ifdef CONFIG_PPC64 +#include <asm/iseries/it_lp_queue.h> #include <asm/paca.h> +#endif -#ifdef CONFIG_SMP -extern void iSeries_smp_message_recv( struct pt_regs * ); +static int ppc_spurious_interrupts; + +#if defined(CONFIG_PPC_ISERIES) && defined(CONFIG_SMP) +extern void iSeries_smp_message_recv(struct pt_regs *); +#endif + +#ifdef CONFIG_PPC32 +#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) + +unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; +atomic_t ppc_n_lost_interrupts; + +#ifdef CONFIG_TAU_INT +extern int tau_initialized; +extern int tau_interrupts(int); +#endif + +#if defined(CONFIG_SMP) && !defined(CONFIG_PPC_MERGE) +extern atomic_t ipi_recv; +extern atomic_t ipi_sent; #endif +#endif /* CONFIG_PPC32 */ -extern irq_desc_t irq_desc[NR_IRQS]; +#ifdef CONFIG_PPC64 EXPORT_SYMBOL(irq_desc); int distribute_irqs = 1; int __irq_offset_value; -int ppc_spurious_interrupts; u64 ppc64_interrupt_controller; +#endif /* CONFIG_PPC64 */ int show_interrupts(struct seq_file *p, void *v) { - int i = *(loff_t *) v, j; - struct irqaction * action; + int i = *(loff_t *)v, j; + struct irqaction *action; irq_desc_t *desc; unsigned long flags; if (i == 0) { - seq_printf(p, " "); - for (j=0; j<NR_CPUS; j++) { - if (cpu_online(j)) - seq_printf(p, "CPU%d ",j); - } + seq_puts(p, " "); + for_each_online_cpu(j) + seq_printf(p, "CPU%d ", j); seq_putc(p, '\n'); } @@ -92,26 +124,41 @@ int show_interrupts(struct seq_file *p, void *v) 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]); - } + for_each_online_cpu(j) + seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); #else seq_printf(p, "%10u ", kstat_irqs(i)); #endif /* CONFIG_SMP */ if (desc->handler) - seq_printf(p, " %s ", desc->handler->typename ); + seq_printf(p, " %s ", desc->handler->typename); else - seq_printf(p, " None "); + seq_puts(p, " None "); seq_printf(p, "%s", (desc->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); + for (action = action->next; action; action = action->next) seq_printf(p, ", %s", action->name); seq_putc(p, '\n'); skip: spin_unlock_irqrestore(&desc->lock, flags); - } else if (i == NR_IRQS) + } else if (i == NR_IRQS) { +#ifdef CONFIG_PPC32 +#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 +#endif /* CONFIG_PPC32 */ seq_printf(p, "BAD: %10u\n", ppc_spurious_interrupts); + } return 0; } @@ -144,126 +191,6 @@ void fixup_irqs(cpumask_t map) } #endif -extern int noirqdebug; - -/* - * Eventually, this should take an array of interrupts and an array size - * so it can dispatch multiple interrupts. - */ -void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq) -{ - int status; - struct irqaction *action; - int cpu = smp_processor_id(); - irq_desc_t *desc = get_irq_desc(irq); - irqreturn_t action_ret; -#ifdef CONFIG_IRQSTACKS - struct thread_info *curtp, *irqtp; -#endif - - kstat_cpu(cpu).irqs[irq]++; - - if (desc->status & IRQ_PER_CPU) { - /* no locking required for CPU-local interrupts: */ - ack_irq(irq); - action_ret = handle_IRQ_event(irq, regs, desc->action); - desc->handler->end(irq); - return; - } - - spin_lock(&desc->lock); - ack_irq(irq); - /* - REPLAY is when Linux resends an IRQ that was dropped earlier - WAITING is used by probe to mark irqs that are being tested - */ - status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING); - status |= IRQ_PENDING; /* we _want_ to handle it */ - - /* - * If the IRQ is disabled for whatever reason, we cannot - * use the action we have. - */ - action = NULL; - if (likely(!(status & (IRQ_DISABLED | IRQ_INPROGRESS)))) { - action = desc->action; - if (!action || !action->handler) { - ppc_spurious_interrupts++; - printk(KERN_DEBUG "Unhandled interrupt %x, disabled\n", irq); - /* We can't call disable_irq here, it would deadlock */ - if (!desc->depth) - desc->depth = 1; - desc->status |= IRQ_DISABLED; - /* This is not a real spurrious interrupt, we - * have to eoi it, so we jump to out - */ - mask_irq(irq); - goto out; - } - status &= ~IRQ_PENDING; /* we commit to handling */ - status |= IRQ_INPROGRESS; /* we are handling it */ - } - desc->status = status; - - /* - * If there is no IRQ handler or it was disabled, exit early. - Since we set PENDING, if another processor is handling - a different instance of this same irq, the other processor - will take care of it. - */ - if (unlikely(!action)) - goto out; - - /* - * Edge triggered interrupts need to remember - * pending events. - * This applies to any hw interrupts that allow a second - * instance of the same irq to arrive while we are in do_IRQ - * or in the handler. But the code here only handles the _second_ - * instance of the irq, not the third or fourth. So it is mostly - * useful for irq hardware that does not mask cleanly in an - * SMP environment. - */ - for (;;) { - spin_unlock(&desc->lock); - -#ifdef CONFIG_IRQSTACKS - /* Switch to the irq stack to handle this */ - curtp = current_thread_info(); - irqtp = hardirq_ctx[smp_processor_id()]; - if (curtp != irqtp) { - irqtp->task = curtp->task; - irqtp->flags = 0; - action_ret = call_handle_IRQ_event(irq, regs, action, irqtp); - irqtp->task = NULL; - if (irqtp->flags) - set_bits(irqtp->flags, &curtp->flags); - } else -#endif - action_ret = handle_IRQ_event(irq, regs, action); - - spin_lock(&desc->lock); - if (!noirqdebug) - note_interrupt(irq, desc, action_ret, regs); - if (likely(!(desc->status & IRQ_PENDING))) - break; - desc->status &= ~IRQ_PENDING; - } -out: - desc->status &= ~IRQ_INPROGRESS; - /* - * The ->end() handler has to deal with interrupts which got - * disabled while the handler was running. - */ - if (desc->handler) { - if (desc->handler->end) - desc->handler->end(irq); - else if (desc->handler->enable) - desc->handler->enable(irq); - } - spin_unlock(&desc->lock); -} - #ifdef CONFIG_PPC_ISERIES void do_IRQ(struct pt_regs *regs) { @@ -310,8 +237,11 @@ void do_IRQ(struct pt_regs *regs) void do_IRQ(struct pt_regs *regs) { int irq; +#ifdef CONFIG_IRQSTACKS + struct thread_info *curtp, *irqtp; +#endif - irq_enter(); + irq_enter(); #ifdef CONFIG_DEBUG_STACKOVERFLOW /* Debugging check for stack overflow: is there less than 2KB free? */ @@ -328,20 +258,44 @@ void do_IRQ(struct pt_regs *regs) } #endif + /* + * 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. + * The value -2 is for buggy hardware and means that this IRQ + * has already been handled. -- Tom + */ irq = ppc_md.get_irq(regs); - if (irq >= 0) - ppc_irq_dispatch_handler(regs, irq); - else - /* That's not SMP safe ... but who cares ? */ - ppc_spurious_interrupts++; - - irq_exit(); + if (irq >= 0) { +#ifdef CONFIG_IRQSTACKS + /* Switch to the irq stack to handle this */ + curtp = current_thread_info(); + irqtp = hardirq_ctx[smp_processor_id()]; + if (curtp != irqtp) { + irqtp->task = curtp->task; + irqtp->flags = 0; + call___do_IRQ(irq, regs, irqtp); + irqtp->task = NULL; + if (irqtp->flags) + set_bits(irqtp->flags, &curtp->flags); + } else +#endif + __do_IRQ(irq, regs); + } else +#ifdef CONFIG_PPC32 + if (irq != -2) +#endif + /* That's not SMP safe ... but who cares ? */ + ppc_spurious_interrupts++; + irq_exit(); } + #endif /* CONFIG_PPC_ISERIES */ void __init init_IRQ(void) { +#ifdef CONFIG_PPC64 static int once = 0; if (once) @@ -349,10 +303,14 @@ void __init init_IRQ(void) once++; +#endif ppc_md.init_IRQ(); +#ifdef CONFIG_PPC64 irq_ctx_init(); +#endif } +#ifdef CONFIG_PPC64 #ifndef CONFIG_PPC_ISERIES /* * Virtual IRQ mapping code, used on systems with XICS interrupt controllers. @@ -517,3 +475,4 @@ static int __init setup_noirqdistrib(char *str) } __setup("noirqdistrib", setup_noirqdistrib); +#endif /* CONFIG_PPC64 */ diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index ae1433d..ae48a00 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -89,12 +89,12 @@ _GLOBAL(call_do_softirq) mtlr r0 blr -_GLOBAL(call_handle_IRQ_event) +_GLOBAL(call___do_IRQ) mflr r0 std r0,16(r1) - stdu r1,THREAD_SIZE-112(r6) - mr r1,r6 - bl .handle_IRQ_event + stdu r1,THREAD_SIZE-112(r5) + mr r1,r5 + bl .__do_IRQ ld r1,0(r1) ld r0,16(r1) mtlr r0 diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 26bb1fe..17c46a2 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -53,6 +53,8 @@ #include <asm/lmb.h> #include <asm/xmon.h> +#include "setup.h" + #undef DEBUG #ifdef DEBUG diff --git a/arch/powerpc/kernel/setup.h b/arch/powerpc/kernel/setup.h new file mode 100644 index 0000000..2ebba75 --- /dev/null +++ b/arch/powerpc/kernel/setup.h @@ -0,0 +1,6 @@ +#ifndef _POWERPC_KERNEL_SETUP_H +#define _POWERPC_KERNEL_SETUP_H + +void check_for_initrd(void); + +#endif /* _POWERPC_KERNEL_SETUP_H */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 0fbc73f..55f485f 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -40,6 +40,8 @@ #include <asm/xmon.h> #include <asm/time.h> +#include "setup.h" + #define DBG(fmt...) #if defined CONFIG_KGDB diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 54c606f..fe39aac 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -61,6 +61,8 @@ #include <asm/xmon.h> #include <asm/udbg.h> +#include "setup.h" + #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) #else diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c index a06603d..01090e9 100644 --- a/arch/powerpc/platforms/iseries/irq.c +++ b/arch/powerpc/platforms/iseries/irq.c @@ -103,6 +103,9 @@ static void intReceived(struct XmPciLpEvent *eventParm, struct pt_regs *regsParm) { int irq; +#ifdef CONFIG_IRQSTACKS + struct thread_info *curtp, *irqtp; +#endif ++Pci_Interrupt_Count; @@ -110,7 +113,20 @@ static void intReceived(struct XmPciLpEvent *eventParm, case XmPciLpEvent_SlotInterrupt: irq = eventParm->hvLpEvent.xCorrelationToken; /* Dispatch the interrupt handlers for this irq */ - ppc_irq_dispatch_handler(regsParm, irq); +#ifdef CONFIG_IRQSTACKS + /* Switch to the irq stack to handle this */ + curtp = current_thread_info(); + irqtp = hardirq_ctx[smp_processor_id()]; + if (curtp != irqtp) { + irqtp->task = curtp->task; + irqtp->flags = 0; + call___do_IRQ(irq, regsParm, irqtp); + irqtp->task = NULL; + if (irqtp->flags) + set_bits(irqtp->flags, &curtp->flags); + } else +#endif + __do_IRQ(irq, regsParm); HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber, eventParm->eventData.slotInterrupt.subBusNumber, eventParm->eventData.slotInterrupt.deviceId); @@ -310,10 +326,8 @@ static void iSeries_disable_IRQ(unsigned int irq) } /* - * Need to define this so ppc_irq_dispatch_handler will NOT call - * enable_IRQ at the end of interrupt handling. However, this does - * nothing because there is not enough information provided to do - * the EOI HvCall. This is done by XmPciLpEvent.c + * This does nothing because there is not enough information + * provided to do the EOI HvCall. This is done by XmPciLpEvent.c */ static void iSeries_end_IRQ(unsigned int irq) { diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index 83a49e8..90040c4 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -74,6 +74,9 @@ 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). diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index c72c86f..405c4f3 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -567,6 +567,7 @@ nextnode: xics_8259_pic.enable = i8259_pic.enable; xics_8259_pic.disable = i8259_pic.disable; + xics_8259_pic.end = i8259_pic.end; for (i = 0; i < 16; ++i) get_irq_desc(i)->handler = &xics_8259_pic; for (; i < NR_IRQS; ++i) diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile index 76a55a4..17a4da6 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 fbb2b9f..0000000 --- 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 fc0d05c..6550de7 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 9f2d95e..4742bf6 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). diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile index 7548968..1f71f23 100644 --- a/arch/ppc64/kernel/Makefile +++ b/arch/ppc64/kernel/Makefile @@ -11,7 +11,7 @@ obj-y := misc.o prom.o endif -obj-y += irq.o idle.o dma.o \ +obj-y += idle.o dma.o \ align.o \ udbg.o \ rtc.o \ diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S index 914632e..492bca6 100644 --- a/arch/ppc64/kernel/misc.S +++ b/arch/ppc64/kernel/misc.S @@ -78,12 +78,12 @@ _GLOBAL(call_do_softirq) mtlr r0 blr -_GLOBAL(call_handle_IRQ_event) +_GLOBAL(call___do_IRQ) mflr r0 std r0,16(r1) - stdu r1,THREAD_SIZE-112(r6) - mr r1,r6 - bl .handle_IRQ_event + stdu r1,THREAD_SIZE-112(r5) + mr r1,r5 + bl .__do_IRQ ld r1,0(r1) ld r0,16(r1) mtlr r0 diff --git a/include/asm-powerpc/hw_irq.h b/include/asm-powerpc/hw_irq.h index c37b31b..26b89d8 100644 --- a/include/asm-powerpc/hw_irq.h +++ b/include/asm-powerpc/hw_irq.h @@ -12,7 +12,6 @@ #include <asm/processor.h> extern void timer_interrupt(struct pt_regs *); -extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq); #ifdef CONFIG_PPC_ISERIES diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h index b3935ea..c9fbced 100644 --- a/include/asm-powerpc/irq.h +++ b/include/asm-powerpc/irq.h @@ -429,7 +429,6 @@ extern u64 ppc64_interrupt_controller; #define NR_MASK_WORDS ((NR_IRQS + 31) / 32) /* pedantic: these are long because they are used with set_bit --RR */ extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; -extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; extern atomic_t ppc_n_lost_interrupts; #define virt_irq_create_mapping(x) (x) @@ -488,8 +487,8 @@ extern struct thread_info *softirq_ctx[NR_CPUS]; extern void irq_ctx_init(void); extern void call_do_softirq(struct thread_info *tp); -extern int call_handle_IRQ_event(int irq, struct pt_regs *regs, - struct irqaction *action, struct thread_info *tp); +extern int call___do_IRQ(int irq, struct pt_regs *regs, + struct thread_info *tp); #define __ARCH_HAS_DO_SOFTIRQ |
