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