txx9/generic/irq_tx4927.c

0001 /*
0002  * Common tx4927 irq handler
0003  *
0004  * Author: MontaVista Software, Inc.
0005  *     source@mvista.com
0006  *
0007  *  under the terms of the GNU General Public License as published by the
0008  *  Free Software Foundation; either version 2 of the License, or (at your
0009  *  option) any later version.
0010  *
0011  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
0012  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
0013  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
0014  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
0015  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
0016  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
0017  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
0018  *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
0019  *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
0020  *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0021  *
0022  *  You should have received a copy of the GNU General Public License along
0023  *  with this program; if not, write to the Free Software Foundation, Inc.,
0024  *  675 Mass Ave, Cambridge, MA 02139, USA.
0025  */
0026 #include <linux/init.h>
0027 #include <linux/interrupt.h>
0028 #include <linux/irq.h>
0029 #include <asm/irq_cpu.h>
0030 #include <asm/txx9/tx4927.h>
0031
0032 void __init tx4927_irq_init(void)
0033 {
0034     int i;
0035
0036     mips_cpu_irq_init();
0037     txx9_irq_init(TX4927_IRC_REG & 0xfffffffffULL);
0038     irq_set_chained_handler(MIPS_CPU_IRQ_BASE + TX4927_IRC_INT,
0039                 handle_simple_irq);
0040     /* raise priority for errors, timers, SIO */
0041     txx9_irq_set_pri(TX4927_IR_ECCERR, 7);
0042     txx9_irq_set_pri(TX4927_IR_WTOERR, 7);
0043     txx9_irq_set_pri(TX4927_IR_PCIERR, 7);
0044     txx9_irq_set_pri(TX4927_IR_PCIPME, 7);
0045     for (i = 0; i < TX4927_NUM_IR_TMR; i++)
0046         txx9_irq_set_pri(TX4927_IR_TMR(i), 6);
0047     for (i = 0; i < TX4927_NUM_IR_SIO; i++)
0048         txx9_irq_set_pri(TX4927_IR_SIO(i), 5);
0049 }