rewrite of the amazon irq code
authorJohn Crispin <john@openwrt.org>
Sat, 4 Aug 2007 01:37:23 +0000 (01:37 +0000)
committerJohn Crispin <john@openwrt.org>
Sat, 4 Aug 2007 01:37:23 +0000 (01:37 +0000)
SVN-Revision: 8333

target/linux/amazon-2.6/files/arch/mips/amazon/interrupt.c
target/linux/amazon-2.6/files/include/asm-mips/amazon/amazon.h

index 6702ecf..5e34e05 100644 (file)
@@ -1,6 +1,7 @@
 /*
  *  Gary Jennejohn (C) 2003 <gj@denx.de>
  *  Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
+ *  Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
 
 static void amazon_disable_irq(unsigned int irq_nr)
 {
-       /* have to access the correct register here */
+       int i;
+       u32 amazon_ier = AMAZON_ICU_IM0_IER;
+
        if (irq_nr <= INT_NUM_IM0_IRL11 && irq_nr >= INT_NUM_IM0_IRL0)
-               /* access IM0 DMA channels */
-               *AMAZON_ICU_IM0_IER &= (~(AMAZON_DMA_H_MASK));
-       else if (irq_nr <= INT_NUM_IM0_IRL31 && irq_nr >= INT_NUM_IM0_IRL12)
-               /* access IM0 except DMA*/
-               *AMAZON_ICU_IM0_IER &= (~AMAZON_ICU_IM0_IER_IR(irq_nr));
-       else if (irq_nr <= INT_NUM_IM1_IRL31 && irq_nr >= INT_NUM_IM1_IRL0)
-               /* access IM1 */
-               *AMAZON_ICU_IM1_IER &= (~AMAZON_ICU_IM1_IER_IR(irq_nr - INT_NUM_IM1_IRL0));
-       else if (irq_nr <= INT_NUM_IM2_IRL31 && irq_nr >= INT_NUM_IM2_IRL0)
-               /* access IM2 */
-               *AMAZON_ICU_IM2_IER &= (~AMAZON_ICU_IM2_IER_IR(irq_nr - INT_NUM_IM2_IRL0));
-       else if (irq_nr <= INT_NUM_IM3_IRL31 && irq_nr >= INT_NUM_IM3_IRL0)
-               /* access IM3 */
-               *AMAZON_ICU_IM3_IER &= (~AMAZON_ICU_IM3_IER_IR((irq_nr - INT_NUM_IM3_IRL0)));
-       else if (irq_nr <= INT_NUM_IM4_IRL31 && irq_nr >= INT_NUM_IM4_IRL0)
-               /* access IM4 */
-               *AMAZON_ICU_IM4_IER &= (~AMAZON_ICU_IM4_IER_IR((irq_nr - INT_NUM_IM4_IRL0)));
+               amazon_writel(amazon_readl(amazon_ier) & (~(AMAZON_DMA_H_MASK)), amazon_ier);
+       else {
+               irq_nr -= INT_NUM_IRQ0;
+               for (i = 0; i <= 4; i++)
+               {
+                       if (irq_nr <= 31) 
+                       amazon_writel(amazon_readl(amazon_ier) & ~(1 << irq_nr ), amazon_ier);
+                       amazon_ier += 0x10;
+                       irq_nr -= 32;
+               }
+       }       
 }
 
 static void amazon_mask_and_ack_irq(unsigned int irq_nr)
 {
-       /* have to access the correct register here */
-       if (irq_nr <= INT_NUM_IM0_IRL11 && irq_nr >= INT_NUM_IM0_IRL0) {
-               /* access IM0 DMA channels */
-               *AMAZON_ICU_IM0_IER &= (~(AMAZON_DMA_H_MASK)); /* mask */
-               *AMAZON_ICU_IM0_ISR = AMAZON_DMA_H_MASK; /* ack */
-       } else if (irq_nr <= INT_NUM_IM0_IRL31 && irq_nr >= INT_NUM_IM0_IRL12) {
-               /* access IM0 except DMA */
-               *AMAZON_ICU_IM0_IER &= ~AMAZON_ICU_IM0_IER_IR(irq_nr - INT_NUM_IM0_IRL0); /* mask */
-               *AMAZON_ICU_IM0_ISR = AMAZON_ICU_IM0_ISR_IR(irq_nr - INT_NUM_IM0_IRL0); /* ack */
-       } else if (irq_nr <= INT_NUM_IM1_IRL31 && irq_nr >= INT_NUM_IM1_IRL0) {
-               /* access IM1 */
-               *AMAZON_ICU_IM1_IER &= ~AMAZON_ICU_IM1_IER_IR(irq_nr - INT_NUM_IM1_IRL0); /* mask */
-               *AMAZON_ICU_IM1_ISR = AMAZON_ICU_IM1_ISR_IR(irq_nr - INT_NUM_IM1_IRL0); /* ack */
-       } else if (irq_nr <= INT_NUM_IM2_IRL31 && irq_nr >= INT_NUM_IM2_IRL0) {
-               /* access IM2 */
-               *AMAZON_ICU_IM2_IER &= ~AMAZON_ICU_IM2_IER_IR(irq_nr - INT_NUM_IM2_IRL0); /* mask */
-               *AMAZON_ICU_IM2_ISR = AMAZON_ICU_IM2_ISR_IR(irq_nr - INT_NUM_IM2_IRL0); /* ack */
-       } else if (irq_nr <= INT_NUM_IM3_IRL31 && irq_nr >= INT_NUM_IM3_IRL0) {
-               /* access IM3 */
-               *AMAZON_ICU_IM3_IER &= ~AMAZON_ICU_IM3_IER_IR(irq_nr - INT_NUM_IM3_IRL0); /* mask */
-               *AMAZON_ICU_IM3_ISR = AMAZON_ICU_IM3_ISR_IR(irq_nr - INT_NUM_IM3_IRL0); /* ack */
-       } else if (irq_nr <= INT_NUM_IM4_IRL31 && irq_nr >= INT_NUM_IM4_IRL0) {
-               *AMAZON_ICU_IM4_IER &= ~AMAZON_ICU_IM4_IER_IR(irq_nr - INT_NUM_IM4_IRL0); /* mask */
-               *AMAZON_ICU_IM4_ISR = AMAZON_ICU_IM4_ISR_IR(irq_nr - INT_NUM_IM4_IRL0); /* ack */
+       int i;
+       u32 amazon_ier = AMAZON_ICU_IM0_IER;
+       u32 amazon_isr = AMAZON_ICU_IM0_ISR;
+
+       if (irq_nr <= INT_NUM_IM0_IRL11 && irq_nr >= INT_NUM_IM0_IRL0){
+               amazon_writel(amazon_readl(amazon_ier) & (~(AMAZON_DMA_H_MASK)), amazon_ier);
+               amazon_writel(AMAZON_DMA_H_MASK, amazon_isr); 
+       } else {
+               irq_nr -= INT_NUM_IRQ0;
+               for (i = 0; i <= 4; i++)
+               {
+                       if (irq_nr <= 31){ 
+                       amazon_writel(amazon_readl(amazon_ier) & ~(1 << irq_nr ), amazon_ier);
+                               amazon_writel((1 << irq_nr ), amazon_isr);
+                       }
+                       amazon_ier += 0x10;
+                       amazon_isr += 0x10;
+                       irq_nr -= 32;
+               }
        }
 }
 
 static void amazon_enable_irq(unsigned int irq_nr)
 {
-       /* have to access the correct register here */
+       int i;
+       u32 amazon_ier = AMAZON_ICU_IM0_IER;
+
        if (irq_nr <= INT_NUM_IM0_IRL11 && irq_nr >= INT_NUM_IM0_IRL0)
-               /* access IM0 DMA*/
-               *AMAZON_ICU_IM0_IER |= AMAZON_DMA_H_MASK;
-       else if (irq_nr <= INT_NUM_IM0_IRL31 && irq_nr >= INT_NUM_IM0_IRL12)
-               /* access IM0 except DMA*/
-               *AMAZON_ICU_IM0_IER |= AMAZON_ICU_IM0_IER_IR(irq_nr - INT_NUM_IM0_IRL0);
-       else if (irq_nr <= INT_NUM_IM1_IRL31 && irq_nr >= INT_NUM_IM1_IRL0)
-               /* access IM1 */
-               *AMAZON_ICU_IM1_IER |= AMAZON_ICU_IM1_IER_IR(irq_nr - INT_NUM_IM1_IRL0);
-       else if (irq_nr <= INT_NUM_IM2_IRL31 && irq_nr >= INT_NUM_IM2_IRL0)
-               /* access IM2 */
-               *AMAZON_ICU_IM2_IER |= AMAZON_ICU_IM2_IER_IR(irq_nr - INT_NUM_IM2_IRL0);
-       else if (irq_nr <= INT_NUM_IM3_IRL31 && irq_nr >= INT_NUM_IM3_IRL0)
-               /* access IM3 */
-               *AMAZON_ICU_IM3_IER |= AMAZON_ICU_IM3_IER_IR((irq_nr - INT_NUM_IM3_IRL0));
-       else if (irq_nr <= INT_NUM_IM4_IRL31 && irq_nr >= INT_NUM_IM4_IRL0)
-               /* access IM4 */
-               *AMAZON_ICU_IM4_IER |= AMAZON_ICU_IM4_IER_IR((irq_nr - INT_NUM_IM4_IRL0));
+               amazon_writel(amazon_readl(amazon_ier) | AMAZON_DMA_H_MASK, amazon_ier);
+       else {
+               irq_nr -= INT_NUM_IRQ0;
+               for (i = 0; i <= 4; i++)
+               {
+                       if (irq_nr <= 31)
+                               amazon_writel(amazon_readl(amazon_ier) | (1 << irq_nr ), amazon_ier);
+                       amazon_ier += 0x10;
+                       irq_nr -= 32;
+               }
+       }
 }
 
 static unsigned int amazon_startup_irq(unsigned int irq)
@@ -133,53 +121,17 @@ static struct hw_interrupt_type amazon_irq_type = {
        .end = amazon_end_irq
 };
 
-/* Cascaded interrupts from IM0 */
-static inline void amazon_hw0_irqdispatch(void)
+/* Cascaded interrupts from IM0-4 */
+static inline void amazon_hw_irqdispatch(u8 line)
 {
        u32 irq;
-                                                                                                                                                                                                
-       irq = (*AMAZON_ICU_IM_VEC) & AMAZON_ICU_IM0_VEC_MASK;
-       if (irq <= 11 && irq >= 0) {
+
+       irq = (amazon_readl(AMAZON_ICU_IM_VEC) >> (line * 5)) & AMAZON_ICU_IM0_VEC_MASK;
+       if (line == 0 && irq <= 11 && irq >= 0) {
                //DMA fixed to IM0_IRL0
                irq = 0;
        }
-       do_IRQ(irq + INT_NUM_IM0_IRL0);
-}
-                                                                                                         
-/* Cascaded interrupts from IM1 */
-static inline void amazon_hw1_irqdispatch(void)
-{
-       u32 irq;
-
-       irq = ((*AMAZON_ICU_IM_VEC) & AMAZON_ICU_IM1_VEC_MASK) >> 5;
-       do_IRQ(irq + INT_NUM_IM1_IRL0);
-}
-
-/* Cascaded interrupts from IM2 */
-static inline void amazon_hw2_irqdispatch(void)
-{
-       u32 irq;
-                                                                                                                                                                                                
-       irq = ((*AMAZON_ICU_IM_VEC) & AMAZON_ICU_IM2_VEC_MASK) >> 10;
-       do_IRQ(irq + INT_NUM_IM2_IRL0);
-}
-
-/* Cascaded interrupts from IM3 */
-static inline void amazon_hw3_irqdispatch(void)
-{
-       u32 irq;
-
-       irq = ((*AMAZON_ICU_IM_VEC) & AMAZON_ICU_IM3_VEC_MASK) >> 15;
-       do_IRQ(irq + INT_NUM_IM3_IRL0);
-}
-
-/* Cascaded interrupts from IM4 */
-static inline void amazon_hw4_irqdispatch(void)
-{
-       u32 irq;
-
-       irq = ((*AMAZON_ICU_IM_VEC) & AMAZON_ICU_IM4_VEC_MASK) >> 20;
-       do_IRQ(irq + INT_NUM_IM4_IRL0);
+       do_IRQ(irq + INT_NUM_IRQ0 + (line * 32));
 }
 
 asmlinkage void plat_irq_dispatch(void)
@@ -187,19 +139,20 @@ asmlinkage void plat_irq_dispatch(void)
        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
        if (pending & CAUSEF_IP7){
                do_IRQ(MIPS_CPU_TIMER_IRQ);
+               goto out;
+       } else {
+               unsigned int i;
+               for (i = 0; i <= 4; i++)
+               {
+                       if(pending & (CAUSEF_IP2 << i)){
+                               amazon_hw_irqdispatch(i);
+                               goto out;
+                       }
+               }
        }
-       else if (pending & CAUSEF_IP2)
-               amazon_hw0_irqdispatch();
-       else if (pending & CAUSEF_IP3)
-               amazon_hw1_irqdispatch();
-       else if (pending & CAUSEF_IP4)
-               amazon_hw2_irqdispatch();
-       else if (pending & CAUSEF_IP5)
-               amazon_hw3_irqdispatch();
-       else if (pending & CAUSEF_IP6)
-               amazon_hw4_irqdispatch();
-       else
-               printk("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status());
+       printk("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status());
+out:
+       return;
 }
 
 static struct irqaction cascade = {
@@ -208,19 +161,14 @@ static struct irqaction cascade = {
        .name           = "cascade",
 };
 
-
-/* Function for careful CP0 interrupt mask access */
-
 void __init arch_init_irq(void)
 {
        int i;
 
        /* mask all interrupt sources */
-       *AMAZON_ICU_IM0_IER = 0;
-       *AMAZON_ICU_IM1_IER = 0;
-       *AMAZON_ICU_IM2_IER = 0;
-       *AMAZON_ICU_IM3_IER = 0;
-       *AMAZON_ICU_IM4_IER = 0;
+       for(i = 0; i <= 4; i++){
+               amazon_writel(0, AMAZON_ICU_IM0_IER + (i * 0x10));
+       }
 
        mips_cpu_irq_init();
 
index fa90a5e..79e495a 100644 (file)
    the program to operate with any other programs), even if such holder or  
    other party has been advised of the possibility of such damages. 
 ******************************************************************************/
-               
+
+#define amazon_readl(a)                        readl(((u32*)(a)))
+#define amazon_writel(a,b)             writel(a, ((u32*)(b)))
+
 /* check ADSL link status */
 #define AMAZON_CHECK_LINK
          
@@ -962,119 +965,55 @@ If set and clear bit are written concurrently with 1, the associated bit is not
 /*  Module      :  ICU register address and bits                       */
 /***********************************************************************/
          
-#define AMAZON_ICU                          (KSEG1+0x1F101000)
+#define AMAZON_ICU                                                             (KSEG1+0x1F101000)
 /***********************************************************************/   
 
-      
 /***IM0 Interrupt Status Register***/ 
-#define AMAZON_ICU_IM0_ISR                      ((volatile u32*)(AMAZON_ICU+ 0x0010))
-#define AMAZON_ICU_IM0_ISR_IR(value)               (1 << (value))
-                      
-      
-/***IM1 Interrupt Status Register***/ 
-#define AMAZON_ICU_IM1_ISR                      ((volatile u32*)(AMAZON_ICU+ 0x0020))
-#define AMAZON_ICU_IM1_ISR_IR(value)               (1 << (value))
-                      
-      
-/***IM2 Interrupt Status Register***/ 
-#define AMAZON_ICU_IM2_ISR                      ((volatile u32*)(AMAZON_ICU+ 0x0030))
-#define AMAZON_ICU_IM2_ISR_IR(value)               (1 << (value))
-                      
-/***IM3 Interrupt Status Register***/
-#define AMAZON_ICU_IM3_ISR                      ((volatile u32*)(AMAZON_ICU+ 0x0040))
-#define AMAZON_ICU_IM3_ISR_IR(value)               (1 << (value))
-                                                                                       
-/***IM4 Interrupt Status Register***/
-#define AMAZON_ICU_IM4_ISR                      ((volatile u32*)(AMAZON_ICU+ 0x0050))
-#define AMAZON_ICU_IM4_ISR_IR(value)               (1 << (value))
-
+#define AMAZON_ICU_IM0_ISR                                             (AMAZON_ICU + 0x0010)
+#define AMAZON_ICU_IM1_ISR                                             (AMAZON_ICU + 0x0020)
+#define AMAZON_ICU_IM2_ISR                                             (AMAZON_ICU + 0x0030)
+#define AMAZON_ICU_IM3_ISR                                             (AMAZON_ICU + 0x0040)
+#define AMAZON_ICU_IM4_ISR                                             (AMAZON_ICU + 0x0050)
                        
 /***IM0 Interrupt Enable Register***/ 
-#define AMAZON_ICU_IM0_IER                      ((volatile u32*)(AMAZON_ICU+ 0x0014))
-#define AMAZON_ICU_IM0_IER_IR(value)               (1 << (value))
-                      
-      
-/***IM1 Interrupt Enable Register***/ 
-#define AMAZON_ICU_IM1_IER                      ((volatile u32*)(AMAZON_ICU+ 0x0024))
-#define AMAZON_ICU_IM1_IER_IR(value)               (1 << (value))
-                      
-      
-/***IM2 Interrupt Enable Register***/ 
-#define AMAZON_ICU_IM2_IER                      ((volatile u32*)(AMAZON_ICU+ 0x0034))
-#define AMAZON_ICU_IM2_IER_IR(value)               (1 << (value))
-                      
-/***IM3 Interrupt Enable Register***/
-#define AMAZON_ICU_IM3_IER                      ((volatile u32*)(AMAZON_ICU+ 0x0044))
-#define AMAZON_ICU_IM3_IER_IR(value)               (1 << (value))
-                                                                                       
-/***IM4 Interrupt Enable Register***/
-#define AMAZON_ICU_IM4_IER                      ((volatile u32*)(AMAZON_ICU+ 0x0054))
-#define AMAZON_ICU_IM4_IER_IR(value)               (1 << (value))
+#define AMAZON_ICU_IM0_IER                                             (AMAZON_ICU + 0x0014)
+#define AMAZON_ICU_IM1_IER                                             (AMAZON_ICU + 0x0024)
+#define AMAZON_ICU_IM2_IER                                             (AMAZON_ICU + 0x0034)
+#define AMAZON_ICU_IM3_IER                                             (AMAZON_ICU + 0x0044)
+#define AMAZON_ICU_IM4_IER                                             (AMAZON_ICU + 0x0054)
 
-            
 /***IM0 Interrupt Output Status Register***/ 
-#define AMAZON_ICU_IM0_IOSR                    ((volatile u32*)(AMAZON_ICU+ 0x0018))
-#define AMAZON_ICU_IM0_IOSR_IR(value)               (1 << (value))
-                      
-      
-/***IM1 Interrupt Output Status Register***/ 
-#define AMAZON_ICU_IM1_IOSR                    ((volatile u32*)(AMAZON_ICU+ 0x0028))
-#define AMAZON_ICU_IM1_IOSR_IR(value)               (1 << (value))
-                      
-      
-/***IM2 Interrupt Output Status Register***/ 
-#define AMAZON_ICU_IM2_IOSR                    ((volatile u32*)(AMAZON_ICU+ 0x0038))
-#define AMAZON_ICU_IM2_IOSR_IR(value)               (1 << (value))
-                      
-/***IM3 Interrupt Output Status Register***/
-#define AMAZON_ICU_IM3_IOSR                    ((volatile u32*)(AMAZON_ICU+ 0x0048))
-#define AMAZON_ICU_IM3_IOSR_IR(value)               (1 << (value))
-                                                                                       
-/***IM4 Interrupt Output Status Register***/
-#define AMAZON_ICU_IM4_IOSR                    ((volatile u32*)(AMAZON_ICU+ 0x0058))
-#define AMAZON_ICU_IM4_IOSR_IR(value)               (1 << (value))
+#define AMAZON_ICU_IM0_IOSR                                            (AMAZON_ICU + 0x0018)
+#define AMAZON_ICU_IM1_IOSR                                            (AMAZON_ICU + 0x0028)
+#define AMAZON_ICU_IM2_IOSR                                            (AMAZON_ICU + 0x0038)
+#define AMAZON_ICU_IM3_IOSR                                            (AMAZON_ICU + 0x0048)
+#define AMAZON_ICU_IM4_IOSR                                            (AMAZON_ICU + 0x0058)
 
-            
 /***IM0 Interrupt Request Set Register***/ 
-#define AMAZON_ICU_IM0_IRSR                    ((volatile u32*)(AMAZON_ICU+ 0x001c))
-#define AMAZON_ICU_IM0_IRSR_IR(value)               (1 << (value))
-                      
-      
-/***IM1 Interrupt Request Set Register***/ 
-#define AMAZON_ICU_IM1_IRSR                    ((volatile u32*)(AMAZON_ICU+ 0x002c))
-#define AMAZON_ICU_IM1_IRSR_IR(value)               (1 << (value))
-                      
-      
-/***IM2 Interrupt Request Set Register***/ 
-#define AMAZON_ICU_IM2_IRSR                    ((volatile u32*)(AMAZON_ICU+ 0x003c))
-#define AMAZON_ICU_IM2_IRSR_IR(value)               (1 << (value))
-                      
-/***IM3 Interrupt Request Set Register***/
-#define AMAZON_ICU_IM3_IRSR                    ((volatile u32*)(AMAZON_ICU+ 0x004c))
-#define AMAZON_ICU_IM3_IRSR_IR(value)               (1 << (value))
-                                                                                       
-/***IM4 Interrupt Request Set Register***/
-#define AMAZON_ICU_IM4_IRSR                    ((volatile u32*)(AMAZON_ICU+ 0x005c))
-#define AMAZON_ICU_IM4_IRSR_IR(value)               (1 << (value))
+#define AMAZON_ICU_IM0_IRSR                                            (AMAZON_ICU + 0x001c)
+#define AMAZON_ICU_IM1_IRSR                                            (AMAZON_ICU + 0x002c)
+#define AMAZON_ICU_IM2_IRSR                                            (AMAZON_ICU + 0x003c)
+#define AMAZON_ICU_IM3_IRSR                                            (AMAZON_ICU + 0x004c)
+#define AMAZON_ICU_IM4_IRSR                                            (AMAZON_ICU + 0x005c)
 
 /***Interrupt Vector Value Register***/
-#define AMAZON_ICU_IM_VEC                      ((volatile u32*)(AMAZON_ICU+ 0x0060))
+#define AMAZON_ICU_IM_VEC                                              (AMAZON_ICU + 0x0060)
 
 /***Interrupt Vector Value Mask***/
-#define AMAZON_ICU_IM0_VEC_MASK                0x0000001f
-#define AMAZON_ICU_IM1_VEC_MASK                0x000003e0
-#define AMAZON_ICU_IM2_VEC_MASK                0x00007c00
-#define AMAZON_ICU_IM3_VEC_MASK                0x000f8000
-#define AMAZON_ICU_IM4_VEC_MASK                0x01f00000
+#define AMAZON_ICU_IM0_VEC_MASK                                        0x0000001f
+#define AMAZON_ICU_IM1_VEC_MASK                                        0x000003e0
+#define AMAZON_ICU_IM2_VEC_MASK                                        0x00007c00
+#define AMAZON_ICU_IM3_VEC_MASK                                        0x000f8000
+#define AMAZON_ICU_IM4_VEC_MASK                                        0x01f00000
 
 /***DMA Interrupt Mask Value***/
-#define AMAZON_DMA_H_MASK                      0x00000fff
+#define AMAZON_DMA_H_MASK                                              0x00000fff
                                                                                        
 /***External Interrupt Control Register***/
-#define AMAZON_ICU_EXTINTCR                ((volatile u32*)(AMAZON_ICU+ 0x0000))                                                                                    
-#define AMAZON_ICU_IRNICR                  ((volatile u32*)(AMAZON_ICU+ 0x0004))                                                                                       
-#define AMAZON_ICU_IRNCR                   ((volatile u32*)(AMAZON_ICU+ 0x0008))                                                                                       
-#define AMAZON_ICU_IRNEN                   ((volatile u32*)(AMAZON_ICU+ 0x000c))
+#define AMAZON_ICU_EXTINTCR                                            (AMAZON_ICU + 0x0000)
+#define AMAZON_ICU_IRNICR                                              (AMAZON_ICU + 0x0004)   
+#define AMAZON_ICU_IRNCR                                               (AMAZON_ICU + 0x0008)   
+#define AMAZON_ICU_IRNEN                                               (AMAZON_ICU + 0x000c)
 
 /***********************************************************************/
 /*  Module      :   PCI/Card-BUS/PC-Card register address and bits     */