diff options
Diffstat (limited to 'arch/arm26/machine/irq.c')
| -rw-r--r-- | arch/arm26/machine/irq.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/arch/arm26/machine/irq.c b/arch/arm26/machine/irq.c deleted file mode 100644 index a60d543edecc..000000000000 --- a/arch/arm26/machine/irq.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * linux/arch/arm26/mach-arc/irq.c - * - * Copyright (C) 1996 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Changelog: - * 24-09-1996 RMK Created - * 10-10-1996 RMK Brought up to date with arch-sa110eval - * 22-10-1996 RMK Changed interrupt numbers & uses new inb/outb macros - * 11-01-1998 RMK Added mask_and_ack_irq - * 22-08-1998 RMK Restructured IRQ routines - * 08-09-2002 IM Brought up to date for 2.5 - * 01-06-2003 JMA Removed arc_fiq_chip - */ -#include <linux/init.h> - -#include <asm/irq.h> -#include <asm/irqchip.h> -#include <asm/ioc.h> -#include <asm/io.h> -#include <asm/system.h> - -extern void init_FIQ(void); - -#define a_clf() clf() -#define a_stf() stf() - -static void arc_ack_irq_a(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << irq; - a_clf(); - val = ioc_readb(IOC_IRQMASKA); - ioc_writeb(val & ~mask, IOC_IRQMASKA); - ioc_writeb(mask, IOC_IRQCLRA); - a_stf(); -} - -static void arc_mask_irq_a(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << irq; - a_clf(); - val = ioc_readb(IOC_IRQMASKA); - ioc_writeb(val & ~mask, IOC_IRQMASKA); - a_stf(); -} - -static void arc_unmask_irq_a(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << irq; - a_clf(); - val = ioc_readb(IOC_IRQMASKA); - ioc_writeb(val | mask, IOC_IRQMASKA); - a_stf(); -} - -static struct irqchip arc_a_chip = { - .ack = arc_ack_irq_a, - .mask = arc_mask_irq_a, - .unmask = arc_unmask_irq_a, -}; - -static void arc_mask_irq_b(unsigned int irq) -{ - unsigned int val, mask; - mask = 1 << (irq & 7); - val = ioc_readb(IOC_IRQMASKB); - ioc_writeb(val & ~mask, IOC_IRQMASKB); -} - -static void arc_unmask_irq_b(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << (irq & 7); - val = ioc_readb(IOC_IRQMASKB); - ioc_writeb(val | mask, IOC_IRQMASKB); -} - -static struct irqchip arc_b_chip = { - .ack = arc_mask_irq_b, - .mask = arc_mask_irq_b, - .unmask = arc_unmask_irq_b, -}; - -/* FIXME - JMA none of these functions are used in arm26 currently -static void arc_mask_irq_fiq(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << (irq & 7); - val = ioc_readb(IOC_FIQMASK); - ioc_writeb(val & ~mask, IOC_FIQMASK); -} - -static void arc_unmask_irq_fiq(unsigned int irq) -{ - unsigned int val, mask; - - mask = 1 << (irq & 7); - val = ioc_readb(IOC_FIQMASK); - ioc_writeb(val | mask, IOC_FIQMASK); -} - -static struct irqchip arc_fiq_chip = { - .ack = arc_mask_irq_fiq, - .mask = arc_mask_irq_fiq, - .unmask = arc_unmask_irq_fiq, -}; -*/ - -void __init arc_init_irq(void) -{ - unsigned int irq, flags; - - /* Disable all IOC interrupt sources */ - ioc_writeb(0, IOC_IRQMASKA); - ioc_writeb(0, IOC_IRQMASKB); - ioc_writeb(0, IOC_FIQMASK); - - for (irq = 0; irq < NR_IRQS; irq++) { - flags = IRQF_VALID; - - if (irq <= 6 || (irq >= 9 && irq <= 15)) - flags |= IRQF_PROBE; - - if (irq == IRQ_KEYBOARDTX) - flags |= IRQF_NOAUTOEN; - - switch (irq) { - case 0 ... 7: - set_irq_chip(irq, &arc_a_chip); - set_irq_handler(irq, do_level_IRQ); - set_irq_flags(irq, flags); - break; - - case 8 ... 15: - set_irq_chip(irq, &arc_b_chip); - set_irq_handler(irq, do_level_IRQ); - set_irq_flags(irq, flags); - -/* case 64 ... 72: - set_irq_chip(irq, &arc_fiq_chip); - set_irq_flags(irq, flags); - break; -*/ - - } - } - - irq_desc[IRQ_KEYBOARDTX].noautoenable = 1; - - init_FIQ(); -} - |