#include <linux/module.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
-#include <asm/irq.h>
#include <asm/processor.h>
+#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/thread_info.h>
-#include <asm/cpu/mmu_context.h>
+#include <cpu/mmu_context.h>
+
+atomic_t irq_err_count;
/*
* 'what should we do if we get a hw irq event on an illegal vector'.
*/
void ack_bad_irq(unsigned int irq)
{
+ atomic_inc(&irq_err_count);
printk("unexpected IRQ trap at vector %02x\n", irq);
}
seq_putc(p, '\n');
}
- if (i < NR_IRQS) {
+ if (i < sh_mv.mv_nr_irqs) {
spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
if (!action)
goto unlock;
seq_printf(p, "%3d: ",i);
- seq_printf(p, "%10u ", kstat_irqs(i));
- seq_printf(p, " %14s", irq_desc[i].chip->typename);
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, " %14s", irq_desc[i].chip->name);
+ seq_printf(p, "-%-8s", irq_desc[i].name);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
seq_putc(p, '\n');
unlock:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
- }
+ } else if (i == sh_mv.mv_nr_irqs)
+ seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
+
return 0;
}
#endif
-#ifdef CONFIG_4KSTACKS
+#ifdef CONFIG_IRQSTACKS
/*
* per-CPU IRQ handling contexts (thread information and stack)
*/
u32 stack[THREAD_SIZE/sizeof(u32)];
};
-static union irq_ctx *hardirq_ctx[NR_CPUS];
-static union irq_ctx *softirq_ctx[NR_CPUS];
+static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
+static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
#endif
-asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs regs)
+asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs)
{
- int irq = r4;
-#ifdef CONFIG_4KSTACKS
+ struct pt_regs *old_regs = set_irq_regs(regs);
+#ifdef CONFIG_IRQSTACKS
union irq_ctx *curctx, *irqctx;
#endif
}
#endif
-#ifdef CONFIG_CPU_HAS_INTEVT
- __asm__ __volatile__ (
-#ifdef CONFIG_CPU_HAS_SR_RB
- "stc r2_bank, %0\n\t"
-#else
- "mov.l @%1, %0\n\t"
-#endif
- "shlr2 %0\n\t"
- "shlr2 %0\n\t"
- "shlr %0\n\t"
- "add #-16, %0\n\t"
- : "=z" (irq), "=r" (r4)
- : "1" (INTEVT)
- : "memory"
- );
-#endif
-
- irq = irq_demux(irq);
+ irq = irq_demux(evt2irq(irq));
-#ifdef CONFIG_4KSTACKS
+#ifdef CONFIG_IRQSTACKS
curctx = (union irq_ctx *)current_thread_info();
irqctx = hardirq_ctx[smp_processor_id()];
irqctx->tinfo.task = curctx->tinfo.task;
irqctx->tinfo.previous_sp = current_stack_pointer;
+ /*
+ * Copy the softirq bits in preempt_count so that the
+ * softirq checks work in the hardirq context.
+ */
+ irqctx->tinfo.preempt_count =
+ (irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
+ (curctx->tinfo.preempt_count & SOFTIRQ_MASK);
+
__asm__ __volatile__ (
"mov %0, r4 \n"
- "mov %1, r5 \n"
- "mov r15, r9 \n"
- "jsr @%2 \n"
+ "mov r15, r8 \n"
+ "jsr @%1 \n"
/* swith to the irq stack */
- " mov %3, r15 \n"
+ " mov %2, r15 \n"
/* restore the stack (ring zero) */
- "mov r9, r15 \n"
+ "mov r8, r15 \n"
: /* no outputs */
- : "r" (irq), "r" (®s), "r" (__do_IRQ), "r" (isp)
- /* XXX: A somewhat excessive clobber list? -PFM */
+ : "r" (irq), "r" (generic_handle_irq), "r" (isp)
: "memory", "r0", "r1", "r2", "r3", "r4",
"r5", "r6", "r7", "r8", "t", "pr"
);
} else
#endif
- __do_IRQ(irq, ®s);
+ generic_handle_irq(irq);
irq_exit();
+ set_irq_regs(old_regs);
return 1;
}
-#ifdef CONFIG_4KSTACKS
-/*
- * These should really be __section__(".bss.page_aligned") as well, but
- * gcc's 3.0 and earlier don't handle that correctly.
- */
+#ifdef CONFIG_IRQSTACKS
static char softirq_stack[NR_CPUS * THREAD_SIZE]
- __attribute__((__aligned__(THREAD_SIZE)));
+ __attribute__((__section__(".bss.page_aligned")));
static char hardirq_stack[NR_CPUS * THREAD_SIZE]
- __attribute__((__aligned__(THREAD_SIZE)));
+ __attribute__((__section__(".bss.page_aligned")));
/*
* allocate per-cpu stacks for hardirq and for softirq processing
irqctx->tinfo.task = NULL;
irqctx->tinfo.exec_domain = NULL;
irqctx->tinfo.cpu = cpu;
- irqctx->tinfo.preempt_count = SOFTIRQ_OFFSET;
+ irqctx->tinfo.preempt_count = 0;
irqctx->tinfo.addr_limit = MAKE_MM_SEG(0);
softirq_ctx[cpu] = irqctx;
hardirq_ctx[cpu] = NULL;
}
-extern asmlinkage void __do_softirq(void);
-
asmlinkage void do_softirq(void)
{
unsigned long flags;
"mov r9, r15 \n"
: /* no outputs */
: "r" (__do_softirq), "r" (isp)
- /* XXX: A somewhat excessive clobber list? -PFM */
: "memory", "r0", "r1", "r2", "r3", "r4",
"r5", "r6", "r7", "r8", "r9", "r15", "t", "pr"
);
+
+ /*
+ * Shouldnt happen, we returned above if in_interrupt():
+ */
+ WARN_ON_ONCE(softirq_count());
}
local_irq_restore(flags);
}
-EXPORT_SYMBOL(do_softirq);
#endif
+
+void __init init_IRQ(void)
+{
+ plat_irq_setup();
+
+ /* Perform the machine specific initialisation */
+ if (sh_mv.mv_init_irq)
+ sh_mv.mv_init_irq();
+
+ irq_ctx_init(smp_processor_id());
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff