X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fmips%2Fjazz%2Firq.c;h=eef05093deb41b174a8b3e10fda4bfc85cf50d02;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=e81e23429ae428964ee719237472196864cd387b;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index e81e23429..eef05093d 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -15,15 +15,11 @@
 #include <asm/io.h>
 #include <asm/jazz.h>
 
-extern asmlinkage void jazz_handle_int(void);
-
-static spinlock_t r4030_lock = SPIN_LOCK_UNLOCKED;
-
-extern asmlinkage void sni_rm200_pci_handle_int(void);
+static DEFINE_SPINLOCK(r4030_lock);
 
 static void enable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = 1 << (irq - JAZZ_IE_PARALLEL);
+	unsigned int mask = 1 << (irq - JAZZ_PARALLEL_IRQ);
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -42,7 +38,7 @@ static unsigned int startup_r4030_irq(unsigned int irq)
 
 void disable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = ~(1 << (irq - JAZZ_IE_PARALLEL));
+	unsigned int mask = ~(1 << (irq - JAZZ_PARALLEL_IRQ));
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -59,15 +55,14 @@ static void end_r4030_irq(unsigned int irq)
 		enable_r4030_irq(irq);
 }
 
-static struct hw_interrupt_type r4030_irq_type = {
-	"R4030",
-	startup_r4030_irq,
-	shutdown_r4030_irq,
-	enable_r4030_irq,
-	disable_r4030_irq,
-	mask_and_ack_r4030_irq,
-	end_r4030_irq,
-	NULL
+static struct irq_chip r4030_irq_type = {
+	.typename = "R4030",
+	.startup = startup_r4030_irq,
+	.shutdown = shutdown_r4030_irq,
+	.enable = enable_r4030_irq,
+	.disable = disable_r4030_irq,
+	.ack = mask_and_ack_r4030_irq,
+	.end = end_r4030_irq,
 };
 
 void __init init_r4030_ints(void)
@@ -78,7 +73,7 @@ void __init init_r4030_ints(void)
 		irq_desc[i].status     = IRQ_DISABLED;
 		irq_desc[i].action     = 0;
 		irq_desc[i].depth      = 1;
-		irq_desc[i].handler    = &r4030_irq_type;
+		irq_desc[i].chip    = &r4030_irq_type;
 	}
 
 	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
@@ -91,13 +86,84 @@ void __init init_r4030_ints(void)
  * driver compatibility reasons interrupts 0 - 15 to be the i8259
  * interrupts even if the hardware uses a different interrupt numbering.
  */
-void __init init_IRQ (void)
+void __init arch_init_irq(void)
 {
-	set_except_vector(0, jazz_handle_int);
-
-	init_generic_irq();
 	init_i8259_irqs();			/* Integrated i8259  */
 	init_r4030_ints();
 
 	change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
 }
+
+static void loc_call(unsigned int irq, struct pt_regs *regs, unsigned int mask)
+{
+	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
+	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
+	do_IRQ(irq, regs);
+	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
+	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
+}
+
+static void ll_local_dev(struct pt_regs *regs)
+{
+	switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
+	case 0:
+		panic("Unimplemented loc_no_irq handler");
+		break;
+	case 4:
+		loc_call(JAZZ_PARALLEL_IRQ, regs, JAZZ_IE_PARALLEL);
+		break;
+	case 8:
+		loc_call(JAZZ_PARALLEL_IRQ, regs, 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, regs, JAZZ_IE_ETHERNET);
+		break;
+	case 24:
+		loc_call(JAZZ_SCSI_IRQ, regs, JAZZ_IE_SCSI);
+		break;
+	case 28:
+		loc_call(JAZZ_KEYBOARD_IRQ, regs, JAZZ_IE_KEYBOARD);
+		break;
+	case 32:
+		loc_call(JAZZ_MOUSE_IRQ, regs, JAZZ_IE_MOUSE);
+		break;
+	case 36:
+		loc_call(JAZZ_SERIAL1_IRQ, regs, JAZZ_IE_SERIAL1);
+		break;
+	case 40:
+		loc_call(JAZZ_SERIAL2_IRQ, regs, JAZZ_IE_SERIAL2);
+		break;
+	}
+}
+
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+	unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+	if (pending & IE_IRQ5)
+		write_c0_compare(0);
+	else if (pending & IE_IRQ4) {
+		r4030_read_reg32(JAZZ_TIMER_REGISTER);
+		do_IRQ(JAZZ_TIMER_IRQ, regs);
+	} else if (pending & IE_IRQ3)
+		panic("Unimplemented ISA NMI handler");
+	else if (pending & IE_IRQ2)
+		do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK), regs);
+	else if (pending & IE_IRQ1) {
+		ll_local_dev(regs);
+	} 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");
+	}
+}