summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-iop3xx/iop331-irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-iop3xx/iop331-irq.c')
-rw-r--r--arch/arm/mach-iop3xx/iop331-irq.c129
1 files changed, 0 insertions, 129 deletions
diff --git a/arch/arm/mach-iop3xx/iop331-irq.c b/arch/arm/mach-iop3xx/iop331-irq.c
deleted file mode 100644
index cab11722ced2..000000000000
--- a/arch/arm/mach-iop3xx/iop331-irq.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * linux/arch/arm/mach-iop3xx/iop331-irq.c
- *
- * Generic IOP331 IRQ handling functionality
- *
- * Author: Dave Jiang <dave.jiang@intel.com>
- * Copyright (C) 2003 Intel Corp.
- *
- * 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.
- *
- *
- */
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/list.h>
-
-#include <asm/mach/irq.h>
-#include <asm/irq.h>
-#include <asm/hardware.h>
-
-#include <asm/mach-types.h>
-
-static u32 iop331_mask0 = 0;
-static u32 iop331_mask1 = 0;
-
-static inline void intctl_write0(u32 val)
-{
- // INTCTL0
- asm volatile("mcr p6,0,%0,c0,c0,0"::"r" (val));
-}
-
-static inline void intctl_write1(u32 val)
-{
- // INTCTL1
- asm volatile("mcr p6,0,%0,c1,c0,0"::"r" (val));
-}
-
-static inline void intstr_write0(u32 val)
-{
- // INTSTR0
- asm volatile("mcr p6,0,%0,c2,c0,0"::"r" (val));
-}
-
-static inline void intstr_write1(u32 val)
-{
- // INTSTR1
- asm volatile("mcr p6,0,%0,c3,c0,0"::"r" (val));
-}
-
-static void
-iop331_irq_mask1 (unsigned int irq)
-{
- iop331_mask0 &= ~(1 << (irq - IOP331_IRQ_OFS));
- intctl_write0(iop331_mask0);
-}
-
-static void
-iop331_irq_mask2 (unsigned int irq)
-{
- iop331_mask1 &= ~(1 << (irq - IOP331_IRQ_OFS - 32));
- intctl_write1(iop331_mask1);
-}
-
-static void
-iop331_irq_unmask1(unsigned int irq)
-{
- iop331_mask0 |= (1 << (irq - IOP331_IRQ_OFS));
- intctl_write0(iop331_mask0);
-}
-
-static void
-iop331_irq_unmask2(unsigned int irq)
-{
- iop331_mask1 |= (1 << (irq - IOP331_IRQ_OFS - 32));
- intctl_write1(iop331_mask1);
-}
-
-struct irq_chip iop331_irqchip1 = {
- .name = "IOP-1",
- .ack = iop331_irq_mask1,
- .mask = iop331_irq_mask1,
- .unmask = iop331_irq_unmask1,
-};
-
-struct irq_chip iop331_irqchip2 = {
- .name = "IOP-2",
- .ack = iop331_irq_mask2,
- .mask = iop331_irq_mask2,
- .unmask = iop331_irq_unmask2,
-};
-
-void __init iop331_init_irq(void)
-{
- unsigned int i, tmp;
-
- /* Enable access to coprocessor 6 for dealing with IRQs.
- * From RMK:
- * Basically, the Intel documentation here is poor. It appears that
- * you need to set the bit to be able to access the coprocessor from
- * SVC mode. Whether that allows access from user space or not is
- * unclear.
- */
- asm volatile (
- "mrc p15, 0, %0, c15, c1, 0\n\t"
- "orr %0, %0, %1\n\t"
- "mcr p15, 0, %0, c15, c1, 0\n\t"
- /* The action is delayed, so we have to do this: */
- "mrc p15, 0, %0, c15, c1, 0\n\t"
- "mov %0, %0\n\t"
- "sub pc, pc, #4"
- : "=r" (tmp) : "i" (1 << 6) );
-
- intctl_write0(0); // disable all interrupts
- intctl_write1(0);
- intstr_write0(0); // treat all as IRQ
- intstr_write1(0);
- if(machine_is_iq80331()) // all interrupts are inputs to chip
- *IOP331_PCIIRSR = 0x0f;
-
- for(i = IOP331_IRQ_OFS; i < NR_IOP331_IRQS; i++)
- {
- set_irq_chip(i, (i < 32) ? &iop331_irqchip1 : &iop331_irqchip2);
- set_irq_handler(i, do_level_IRQ);
- set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
- }
-}
-