release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/txx9/generic/irq_tx4938.c

   1 /*
   2  * linux/arch/mips/tx4938/common/irq.c
   3  *
   4  * Common tx4938 irq handler
   5  * Copyright (C) 2000-2001 Toshiba Corporation
   6  *
   7  * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
   8  * terms of the GNU General Public License version 2. This program is
   9  * licensed "as is" without any warranty of any kind, whether express
  10  * or implied.
  11  *
  12  * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
  13  */
  14 #include <linux/init.h>
  15 #include <linux/interrupt.h>
  16 #include <asm/irq_cpu.h>
  17 #include <asm/txx9/tx4938.h>
  18
  19 void __init tx4938_irq_init(void)
  20 {
  21         int i;
  22
  23         mips_cpu_irq_init();
  24         txx9_irq_init(TX4938_IRC_REG & 0xfffffffffULL);
  25         set_irq_chained_handler(MIPS_CPU_IRQ_BASE + TX4938_IRC_INT,
  26                                 handle_simple_irq);
  27         /* raise priority for errors, timers, SIO */
  28         txx9_irq_set_pri(TX4938_IR_ECCERR, 7);
  29         txx9_irq_set_pri(TX4938_IR_WTOERR, 7);
  30         txx9_irq_set_pri(TX4938_IR_PCIERR, 7);
  31         txx9_irq_set_pri(TX4938_IR_PCIPME, 7);
  32         for (i = 0; i < TX4938_NUM_IR_TMR; i++)
  33                 txx9_irq_set_pri(TX4938_IR_TMR(i), 6);
  34         for (i = 0; i < TX4938_NUM_IR_SIO; i++)
  35                 txx9_irq_set_pri(TX4938_IR_SIO(i), 5);
  36 }