release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/txx9/generic/irq_tx4927.c

   1 /*
   2  * Common tx4927 irq handler
   3  *
   4  * Author: MontaVista Software, Inc.
   5  *         source@mvista.com
   6  *
   7  *  under the terms of the GNU General Public License as published by the
   8  *  Free Software Foundation; either version 2 of the License, or (at your
   9  *  option) any later version.
  10  *
  11  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  12  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  13  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  14  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  15  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  16  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  17  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  18  *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  19  *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  20  *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  21  *
  22  *  You should have received a copy of the GNU General Public License along
  23  *  with this program; if not, write to the Free Software Foundation, Inc.,
  24  *  675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26 #include <linux/init.h>
  27 #include <linux/interrupt.h>
  28 #include <asm/irq_cpu.h>
  29 #include <asm/txx9/tx4927.h>
  30
  31 void __init tx4927_irq_init(void)
  32 {
  33         int i;
  34
  35         mips_cpu_irq_init();
  36         txx9_irq_init(TX4927_IRC_REG & 0xfffffffffULL);
  37         set_irq_chained_handler(MIPS_CPU_IRQ_BASE + TX4927_IRC_INT,
  38                                 handle_simple_irq);
  39         /* raise priority for errors, timers, SIO */
  40         txx9_irq_set_pri(TX4927_IR_ECCERR, 7);
  41         txx9_irq_set_pri(TX4927_IR_WTOERR, 7);
  42         txx9_irq_set_pri(TX4927_IR_PCIERR, 7);
  43         txx9_irq_set_pri(TX4927_IR_PCIPME, 7);
  44         for (i = 0; i < TX4927_NUM_IR_TMR; i++)
  45                 txx9_irq_set_pri(TX4927_IR_TMR(i), 6);
  46         for (i = 0; i < TX4927_NUM_IR_SIO; i++)
  47                 txx9_irq_set_pri(TX4927_IR_SIO(i), 5);
  48 }