patch-2.4.2 linux/arch/mips/cobalt/via.c

• Lines: 91
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.1/linux/arch/mips/cobalt/via.c
• Orig date: Sun Jul 9 22:18:15 2000

diff -u --recursive --new-file v2.4.1/linux/arch/mips/cobalt/via.c linux/arch/mips/cobalt/via.c
@@ -1,90 +0,0 @@
-/*
- * Interrupt handling for the VIA ISA bridge.
- *
- * Everything the same ... just different ...
- */
-#include <linux/kernel.h>
-#include <asm/cobalt.h>
-#include <asm/ptrace.h>
-#include <asm/io.h>
-
-extern asmlinkage void do_IRQ(int irq, struct pt_regs * regs);
-
-extern unsigned char cache_21;
-extern unsigned char cache_A1;
-
-/*
- * (un)mask_irq, disable_irq() and enable_irq() only handle (E)ISA and
- * PCI devices.  Other onboard hardware needs specific routines.
- */
-void mask_irq(unsigned int irq_nr)
-{
-	unsigned char mask;
-
-	mask = 1 << (irq_nr & 7);
-	if (irq_nr < 8) {
-		cache_21 |= mask;
-		outb(cache_21, 0x10000021);
-	} else {
-		cache_A1 |= mask;
-		outb(cache_A1, 0x100000a1);
-	}
-}
-
-void unmask_irq(unsigned int irq_nr)
-{
-	unsigned char mask;
-
-	mask = ~(1 << (irq_nr & 7));
-	if (irq_nr < 8) {
-		cache_21 &= mask;
-		outb(cache_21, 0x10000021);
-	} else {
-		cache_A1 &= mask;
-		outb(cache_A1, 0x100000a1);
-	}
-}
-
-asmlinkage void via_irq(struct pt_regs *regs)
-{
-	char mstat, sstat;
-  
-	/* Read Master Status */
-	VIA_PORT_WRITE(0x20, 0x0C);
-	mstat = VIA_PORT_READ(0x20);
- 
-	if (mstat < 0) {
-		mstat &= 0x7f;
-		if (mstat != 2) {     	
-			do_IRQ(mstat, regs);
-			VIA_PORT_WRITE(0x20, mstat | 0x20);
-		} else {
-			sstat = VIA_PORT_READ(0xA0);
-
-			/* Slave interrupt */
-			VIA_PORT_WRITE(0xA0, 0x0C);
-			sstat = VIA_PORT_READ(0xA0);
-   
-			if (sstat < 0) {
-				do_IRQ((sstat + 8) & 0x7f, regs);
-				VIA_PORT_WRITE(0x20, 0x22);       
-				VIA_PORT_WRITE(0xA0, (sstat & 0x7f) | 0x20);
-			} else {
-				printk("Spurious slave interrupt...\n");
-			}
-		}
-	} else
-		printk("Spurious master interrupt...");
-}
-
-asmlinkage void galileo_irq(struct pt_regs *regs)
-{
-	unsigned long irq_src = *((unsigned long *) 0xb4000c18); 
-  
-	/* Check for timer irq ... */
-	if (irq_src & 0x00000100) {
-		*((volatile unsigned long *) 0xb4000c18) = 0;
-		do_IRQ(0, regs);
-	} else
-		printk("Spurious Galileo interrupt...\n");
-}