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 <linux/irq.h>
29 #include <asm/irq_cpu.h>
30 #include <asm/txx9/tx4927.h>
31
tx4927_irq_init(void)32 void __init tx4927_irq_init(void)
33 {
34 int i;
35
36 mips_cpu_irq_init();
37 txx9_irq_init(TX4927_IRC_REG & 0xfffffffffULL);
38 irq_set_chained_handler(MIPS_CPU_IRQ_BASE + TX4927_IRC_INT,
39 handle_simple_irq);
40 /* raise priority for errors, timers, SIO */
41 txx9_irq_set_pri(TX4927_IR_ECCERR, 7);
42 txx9_irq_set_pri(TX4927_IR_WTOERR, 7);
43 txx9_irq_set_pri(TX4927_IR_PCIERR, 7);
44 txx9_irq_set_pri(TX4927_IR_PCIPME, 7);
45 for (i = 0; i < TX4927_NUM_IR_TMR; i++)
46 txx9_irq_set_pri(TX4927_IR_TMR(i), 6);
47 for (i = 0; i < TX4927_NUM_IR_SIO; i++)
48 txx9_irq_set_pri(TX4927_IR_SIO(i), 5);
49 }
50