/* * (C) Copyright 2006 * Stefan Roese, DENX Software Engineering, sr@denx.de. * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Alex Zuepke <azu@sysgo.de> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <asm/arch/ixp425.h> #include <asm/proc-armv/ptrace.h> struct _irq_handler { void *m_data; void (*m_func)( void *data); }; static struct _irq_handler IRQ_HANDLER[N_IRQS]; static void default_isr(void *data) { printf("default_isr(): called for IRQ %d, Interrupt Status=%x PR=%x\n", (int)data, *IXP425_ICIP, *IXP425_ICIH); } static int next_irq(void) { return (((*IXP425_ICIH & 0x000000fc) >> 2) - 1); } void do_irq (struct pt_regs *pt_regs) { int irq = next_irq(); IRQ_HANDLER[irq].m_func(IRQ_HANDLER[irq].m_data); } void irq_install_handler (int irq, interrupt_handler_t handle_irq, void *data) { if (irq >= N_IRQS || !handle_irq) return; IRQ_HANDLER[irq].m_data = data; IRQ_HANDLER[irq].m_func = handle_irq; } int arch_interrupt_init (void) { int i; /* install default interrupt handlers */ for (i = 0; i < N_IRQS; i++) irq_install_handler(i, default_isr, (void *)i); /* configure interrupts for IRQ mode */ *IXP425_ICLR = 0x00000000; return (0); }