101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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* linux/arch/arm/mm/mm-lusl7200.c
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*
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* Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
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*
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* Extra MM routines for L7200 architecture
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/device.h>
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#include <asm/types.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/page.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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/*
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* IRQ base register
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*/
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#define IRQ_BASE (IO_BASE_2 + 0x1000)
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/*
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* Normal IRQ registers
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*/
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#define IRQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x000))
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#define IRQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x004))
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#define IRQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x008))
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#define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c))
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#define IRQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x010))
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#define IRQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x018))
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/*
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* Fast IRQ registers
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*/
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#define FIQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x100))
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#define FIQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x104))
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#define FIQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x108))
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#define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c))
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#define FIQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x110))
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#define FIQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x118))
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static void l7200_mask_irq(unsigned int irq)
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{
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IRQ_ENABLECLEAR = 1 << irq;
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}
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static void l7200_unmask_irq(unsigned int irq)
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{
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IRQ_ENABLE = 1 << irq;
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}
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static struct irq_chip l7200_irq_chip = {
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.ack = l7200_mask_irq,
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.mask = l7200_mask_irq,
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.unmask = l7200_unmask_irq
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};
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static void __init l7200_init_irq(void)
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{
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int irq;
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IRQ_ENABLECLEAR = 0xffffffff; /* clear all interrupt enables */
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FIQ_ENABLECLEAR = 0xffffffff; /* clear all fast interrupt enables */
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for (irq = 0; irq < NR_IRQS; irq++) {
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set_irq_chip(irq, &l7200_irq_chip);
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set_irq_flags(irq, IRQF_VALID);
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set_irq_handler(irq, handle_level_irq);
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}
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init_FIQ();
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}
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static struct map_desc l7200_io_desc[] __initdata = {
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{ IO_BASE, IO_START, IO_SIZE, MT_DEVICE },
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{ IO_BASE_2, IO_START_2, IO_SIZE_2, MT_DEVICE },
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{ AUX_BASE, AUX_START, AUX_SIZE, MT_DEVICE },
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{ FLASH1_BASE, FLASH1_START, FLASH1_SIZE, MT_DEVICE },
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{ FLASH2_BASE, FLASH2_START, FLASH2_SIZE, MT_DEVICE }
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};
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static void __init l7200_map_io(void)
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{
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iotable_init(l7200_io_desc, ARRAY_SIZE(l7200_io_desc));
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}
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MACHINE_START(L7200, "LinkUp Systems L7200")
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/* Maintainer: Steve Hill / Scott McConnell */
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.phys_io = 0x80040000,
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.io_pg_offst = ((0xd0000000) >> 18) & 0xfffc,
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.map_io = l7200_map_io,
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.init_irq = l7200_init_irq,
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MACHINE_END
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