[MIPS] TXx9: Make single kernel can support multiple boards

[linux-2.6-omap-h63xx.git] / arch / mips / txx9 / jmr3927 / irq.c

diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c
index b97d22e15da6fc773f45be4c72897230ba57f3eb..070c9a115e57a559ba023015015ae40ba67ab9ea 100644 (file)
--- a/arch/mips/txx9/jmr3927/irq.c
+++ b/arch/mips/txx9/jmr3927/irq.c
@@ -39,6 +39,7 @@
 #include <asm/system.h>
 
 #include <asm/processor.h>
+#include <asm/txx9/generic.h>
 #include <asm/txx9/jmr3927.h>
 
 #if JMR3927_IRQ_END > NR_IRQS
@@ -77,37 +78,30 @@ static void unmask_irq_ioc(unsigned int irq)
        (void)jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR);
 }
 
-asmlinkage void plat_irq_dispatch(void)
-{
-       unsigned long cp0_cause = read_c0_cause();
-       int irq;
-
-       if ((cp0_cause & CAUSEF_IP7) == 0)
-               return;
-       irq = (cp0_cause >> CAUSEB_IP2) & 0x0f;
-
-       do_IRQ(irq + JMR3927_IRQ_IRC);
-}
-
-static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id)
+static int jmr3927_ioc_irqroute(void)
 {
        unsigned char istat = jmr3927_ioc_reg_in(JMR3927_IOC_INTS2_ADDR);
        int i;
 
        for (i = 0; i < JMR3927_NR_IRQ_IOC; i++) {
-               if (istat & (1 << i)) {
-                       irq = JMR3927_IRQ_IOC + i;
-                       do_IRQ(irq);
-               }
+               if (istat & (1 << i))
+                       return JMR3927_IRQ_IOC + i;
        }
-       return IRQ_HANDLED;
+       return -1;
 }
 
-static struct irqaction ioc_action = {
-       .handler = jmr3927_ioc_interrupt,
-       .mask = CPU_MASK_NONE,
-       .name = "IOC",
-};
+static int jmr3927_irq_dispatch(int pending)
+{
+       int irq;
+
+       if ((pending & CAUSEF_IP7) == 0)
+               return -1;
+       irq = (pending >> CAUSEB_IP2) & 0x0f;
+       irq += JMR3927_IRQ_IRC;
+       if (irq == JMR3927_IRQ_IOCINT)
+               irq = jmr3927_ioc_irqroute();
+       return irq;
+}
 
 #ifdef CONFIG_PCI
 static irqreturn_t jmr3927_pcierr_interrupt(int irq, void *dev_id)
@@ -127,8 +121,9 @@ static struct irqaction pcierr_action = {
 
 static void __init jmr3927_irq_init(void);
 
-void __init arch_init_irq(void)
+void __init jmr3927_irq_setup(void)
 {
+       txx9_irq_dispatch = jmr3927_irq_dispatch;
        /* Now, interrupt control disabled, */
        /* all IRC interrupts are masked, */
        /* all IRC interrupt mode are Low Active. */
@@ -146,7 +141,7 @@ void __init arch_init_irq(void)
        jmr3927_irq_init();
 
        /* setup IOC interrupt 1 (PCI, MODEM) */
-       setup_irq(JMR3927_IRQ_IOCINT, &ioc_action);
+       set_irq_chained_handler(JMR3927_IRQ_IOCINT, handle_simple_irq);
 
 #ifdef CONFIG_PCI
        setup_irq(JMR3927_IRQ_IRC_PCI, &pcierr_action);