arch/mips/mips-boards/sead/sead_int.c

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 2002 MIPS Technologies, Inc.  All rights reserved.
   4  * Copyright (C) 2003 Ralf Baechle (ralf@linux-mips.org)
   5  *
   6  *  This program is free software; you can distribute it and/or modify it
   7  *  under the terms of the GNU General Public License (Version 2) as
   8  *  published by the Free Software Foundation.
   9  *
  10  *  This program is distributed in the hope it will be useful, but WITHOUT
  11  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  *  for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  18  *
  19  * Routines for generic manipulation of the interrupts found on the MIPS
  20  * Sead board.
  21  */
  22 #include <linux/init.h>
  23 #include <linux/irq.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <asm/mips-boards/seadint.h>
  27
  28 extern asmlinkage void mipsIRQ(void);
  29
  30 asmlinkage void sead_hw0_irqdispatch(struct pt_regs *regs)
  31 {
  32         do_IRQ(SEADINT_UART0, regs);
  33 }
  34
  35 asmlinkage void sead_hw1_irqdispatch(struct pt_regs *regs)
  36 {
  37         do_IRQ(SEADINT_UART1, regs);
  38 }
  39
  40 void __init arch_init_irq(void)
  41 {
  42         /*
  43          * Mask out all interrupt
  44          */
  45         clear_c0_status(0x0000ff00);
  46
  47         /* Now safe to set the exception vector. */
  48         set_except_vector(0, mipsIRQ);
  49
  50         mips_cpu_irq_init(0);
  51 }