1 files changed, 27 insertions, 67 deletions

diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index 015cf4bb51dd..56235412cbb7 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -11,15 +11,17 @@
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
 
+#include <asm/irq_cpu.h>
 #include <asm/i8259.h>
 #include <asm/io.h>
 #include <asm/jazz.h>
+#include <asm/pgtable.h>
 
 static DEFINE_SPINLOCK(r4030_lock);
 
 static void enable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = 1 << (irq - JAZZ_PARALLEL_IRQ);
+	unsigned int mask = 1 << (irq - JAZZ_IRQ_START);
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -30,7 +32,7 @@ static void enable_r4030_irq(unsigned int irq)
 
 void disable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = ~(1 << (irq - JAZZ_PARALLEL_IRQ));
+	unsigned int mask = ~(1 << (irq - JAZZ_IRQ_START));
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -51,7 +53,7 @@ void __init init_r4030_ints(void)
 {
 	int i;
 
-	for (i = JAZZ_PARALLEL_IRQ; i <= JAZZ_TIMER_IRQ; i++)
+	for (i = JAZZ_IRQ_START; i <= JAZZ_IRQ_END; i++)
 		set_irq_chip_and_handler(i, &r4030_irq_type, handle_level_irq);
 
 	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
@@ -66,82 +68,40 @@ void __init init_r4030_ints(void)
  */
 void __init arch_init_irq(void)
 {
+	/*
+	 * this is a hack to get back the still needed wired mapping
+	 * killed by init_mm()
+	 */
+
+	/* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
+	add_wired_entry(0x02000017, 0x03c00017, 0xe0000000, PM_64K);
+	/* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
+	add_wired_entry(0x02400017, 0x02440017, 0xe2000000, PM_16M);
+	/* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
+	add_wired_entry(0x01800017, 0x01000017, 0xe4000000, PM_4M);
+
 	init_i8259_irqs();			/* Integrated i8259  */
+	mips_cpu_irq_init();
 	init_r4030_ints();
 
-	change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
-}
-
-static void loc_call(unsigned int irq, unsigned int mask)
-{
-	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
-	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
-	do_IRQ(irq);
-	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
-	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
-}
-
-static void ll_local_dev(void)
-{
-	switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
-	case 0:
-		panic("Unimplemented loc_no_irq handler");
-		break;
-	case 4:
-		loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_PARALLEL);
-		break;
-	case 8:
-		loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_FLOPPY);
-		break;
-	case 12:
-		panic("Unimplemented loc_sound handler");
-		break;
-	case 16:
-		panic("Unimplemented loc_video handler");
-		break;
-	case 20:
-		loc_call(JAZZ_ETHERNET_IRQ, JAZZ_IE_ETHERNET);
-		break;
-	case 24:
-		loc_call(JAZZ_SCSI_IRQ, JAZZ_IE_SCSI);
-		break;
-	case 28:
-		loc_call(JAZZ_KEYBOARD_IRQ, JAZZ_IE_KEYBOARD);
-		break;
-	case 32:
-		loc_call(JAZZ_MOUSE_IRQ, JAZZ_IE_MOUSE);
-		break;
-	case 36:
-		loc_call(JAZZ_SERIAL1_IRQ, JAZZ_IE_SERIAL1);
-		break;
-	case 40:
-		loc_call(JAZZ_SERIAL2_IRQ, JAZZ_IE_SERIAL2);
-		break;
-	}
+	change_c0_status(ST0_IM, IE_IRQ2 | IE_IRQ1);
 }
 
 asmlinkage void plat_irq_dispatch(void)
 {
 	unsigned int pending = read_c0_cause() & read_c0_status();
+	unsigned int irq;
 
-	if (pending & IE_IRQ5)
-		write_c0_compare(0);
-	else if (pending & IE_IRQ4) {
+	if (pending & IE_IRQ4) {
 		r4030_read_reg32(JAZZ_TIMER_REGISTER);
 		do_IRQ(JAZZ_TIMER_IRQ);
-	} else if (pending & IE_IRQ3)
-		panic("Unimplemented ISA NMI handler");
-	else if (pending & IE_IRQ2)
+	} else if (pending & IE_IRQ2)
 		do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK));
 	else if (pending & IE_IRQ1) {
-		ll_local_dev();
-	} else if (unlikely(pending & IE_IRQ0))
-		panic("Unimplemented local_dma handler");
-	else if (pending & IE_SW1) {
-		clear_c0_cause(IE_SW1);
-		panic("Unimplemented sw1 handler");
-	} else if (pending & IE_SW0) {
-		clear_c0_cause(IE_SW0);
-		panic("Unimplemented sw0 handler");
+		irq = *(volatile u8 *)JAZZ_IO_IRQ_SOURCE >> 2;
+		if (likely(irq > 0))
+			do_IRQ(irq + JAZZ_IRQ_START - 1);
+		else
+			panic("Unimplemented loc_no_irq handler");
 	}
 }