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