diff options
Diffstat (limited to 'arch/arm/mach-shark/irq.c')
| -rw-r--r-- | arch/arm/mach-shark/irq.c | 108 | 
1 files changed, 0 insertions, 108 deletions
diff --git a/arch/arm/mach-shark/irq.c b/arch/arm/mach-shark/irq.c deleted file mode 100644 index 5dce13e429f..00000000000 --- a/arch/arm/mach-shark/irq.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - *  linux/arch/arm/mach-shark/irq.c - * - * by Alexander Schulz - * - * derived from linux/arch/ppc/kernel/i8259.c and: - * arch/arm/mach-ebsa110/include/mach/irq.h - * Copyright (C) 1996-1998 Russell King - */ - -#include <linux/init.h> -#include <linux/fs.h> -#include <linux/interrupt.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/mach/irq.h> - -/* - * 8259A PIC functions to handle ISA devices: - */ - -/* - * This contains the irq mask for both 8259A irq controllers, - * Let through the cascade-interrupt no. 2 (ff-(1<<2)==fb) - */ -static unsigned char cached_irq_mask[2] = { 0xfb, 0xff }; - -/* - * These have to be protected by the irq controller spinlock - * before being called. - */ -static void shark_disable_8259A_irq(struct irq_data *d) -{ -	unsigned int mask; -	if (d->irq<8) { -	  mask = 1 << d->irq; -	  cached_irq_mask[0] |= mask; -	  outb(cached_irq_mask[1],0xA1); -	} else { -	  mask = 1 << (d->irq-8); -	  cached_irq_mask[1] |= mask; -	  outb(cached_irq_mask[0],0x21); -	} -} - -static void shark_enable_8259A_irq(struct irq_data *d) -{ -	unsigned int mask; -	if (d->irq<8) { -	  mask = ~(1 << d->irq); -	  cached_irq_mask[0] &= mask; -	  outb(cached_irq_mask[0],0x21); -	} else { -	  mask = ~(1 << (d->irq-8)); -	  cached_irq_mask[1] &= mask; -	  outb(cached_irq_mask[1],0xA1); -	} -} - -static void shark_ack_8259A_irq(struct irq_data *d){} - -static irqreturn_t bogus_int(int irq, void *dev_id) -{ -	printk("Got interrupt %i!\n",irq); -	return IRQ_NONE; -} - -static struct irqaction cascade; - -static struct irq_chip fb_chip = { -	.name		= "XT-PIC", -	.irq_ack	= shark_ack_8259A_irq, -	.irq_mask	= shark_disable_8259A_irq, -	.irq_unmask	= shark_enable_8259A_irq, -}; - -void __init shark_init_irq(void) -{ -	int irq; - -	for (irq = 0; irq < NR_IRQS; irq++) { -		irq_set_chip_and_handler(irq, &fb_chip, handle_edge_irq); -		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); -	} - -	/* init master interrupt controller */ -	outb(0x11, 0x20); /* Start init sequence, edge triggered (level: 0x19)*/ -	outb(0x00, 0x21); /* Vector base */ -	outb(0x04, 0x21); /* Cascade (slave) on IRQ2 */ -	outb(0x03, 0x21); /* Select 8086 mode , auto eoi*/ -	outb(0x0A, 0x20); -	/* init slave interrupt controller */ -	outb(0x11, 0xA0); /* Start init sequence, edge triggered */ -	outb(0x08, 0xA1); /* Vector base */ -	outb(0x02, 0xA1); /* Cascade (slave) on IRQ2 */ -	outb(0x03, 0xA1); /* Select 8086 mode, auto eoi */ -	outb(0x0A, 0xA0); -	outb(cached_irq_mask[1],0xA1); -	outb(cached_irq_mask[0],0x21); -	//request_region(0x20,0x2,"pic1"); -	//request_region(0xA0,0x2,"pic2"); - -	cascade.handler = bogus_int; -	cascade.name = "cascade"; -	setup_irq(2,&cascade); -} -  | 
