Pull thermal into release branch

[linux-drm-fsl-dcu.git] / arch / sh / kernel / irq.c

diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index acf2602569c4928a5ecd6dc023ede793afd64d2e..27b923c45b3d3dbceb19a3310575dd5bf46d8b1f 100644 (file)
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -11,9 +11,9 @@
 #include <linux/module.h>
 #include <linux/kernel_stat.h>
 #include <linux/seq_file.h>
-#include <linux/io.h>
-#include <asm/irq.h>
+#include <linux/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>
@@ -45,7 +45,7 @@ int show_interrupts(struct seq_file *p, void *v)
                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)
@@ -54,7 +54,7 @@ int show_interrupts(struct seq_file *p, void *v)
                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, "-%s", handle_irq_name(irq_desc[i].handle_irq));
+               seq_printf(p, "-%-8s", irq_desc[i].name);
                seq_printf(p, "  %s", action->name);
 
                for (action=action->next; action; action = action->next)
@@ -62,7 +62,7 @@ int show_interrupts(struct seq_file *p, void *v)
                seq_putc(p, '\n');
 unlock:
                spin_unlock_irqrestore(&irq_desc[i].lock, flags);
-       } else if (i == NR_IRQS)
+       } else if (i == sh_mv.mv_nr_irqs)
                seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
 
        return 0;
@@ -78,16 +78,13 @@ union irq_ctx {
        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)
 {
-       struct pt_regs *old_regs = set_irq_regs(&regs);
-       int irq;
+       struct pt_regs *old_regs = set_irq_regs(regs);
 #ifdef CONFIG_4KSTACKS
        union irq_ctx *curctx, *irqctx;
 #endif
@@ -110,13 +107,7 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
        }
 #endif
 
-#ifdef CONFIG_CPU_HAS_INTEVT
-       irq = (ctrl_inl(INTEVT) >> 5) - 16;
-#else
-       irq = r4;
-#endif
-
-       irq = irq_demux(irq);
+       irq = irq_demux(evt2irq(irq));
 
 #ifdef CONFIG_4KSTACKS
        curctx = (union irq_ctx *)current_thread_info();
@@ -135,17 +126,24 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
                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    r15, r9         \n"
+                       "mov    r15, r8         \n"
                        "jsr    @%1             \n"
                        /* swith to the irq stack */
                        " mov   %2, r15         \n"
                        /* restore the stack (ring zero) */
-                       "mov    r9, r15         \n"
+                       "mov    r8, r15         \n"
                        : /* no outputs */
                        : "r" (irq), "r" (generic_handle_irq), "r" (isp)
-                       /* XXX: A somewhat excessive clobber list? -PFM */
                        : "memory", "r0", "r1", "r2", "r3", "r4",
                          "r5", "r6", "r7", "r8", "t", "pr"
                );
@@ -193,7 +191,7 @@ void irq_ctx_init(int cpu)
        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;
@@ -239,13 +237,38 @@ asmlinkage void do_softirq(void)
                        "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)
+{
+#ifdef CONFIG_CPU_HAS_PINT_IRQ
+       init_IRQ_pint();
+#endif
+
+#ifdef CONFIG_CPU_HAS_INTC2_IRQ
+       init_IRQ_intc2();
+#endif
+
+#ifdef CONFIG_CPU_HAS_IPR_IRQ
+       init_IRQ_ipr();
+#endif
+
+       /* Perform the machine specific initialisation */
+       if (sh_mv.mv_init_irq)
+               sh_mv.mv_init_irq();
+
+       irq_ctx_init(smp_processor_id());
+}