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openpic_common.c revision 1.7 
      1 /*	$NetBSD: openpic_common.c,v 1.7 2013/09/19 23:28:52 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 Michael Lorenz
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: openpic_common.c,v 1.7 2013/09/19 23:28:52 christos Exp $");
     31 
     32 #include "opt_openpic.h"
     33 #include "opt_interrupt.h"
     34 
     35 #include <sys/param.h>
     36 #include <sys/kernel.h>
     37 
     38 #include <uvm/uvm_extern.h>
     39 
     40 #include <machine/pio.h>
     41 #include <powerpc/openpic.h>
     42 
     43 #include <powerpc/pic/picvar.h>
     44 
     45 volatile unsigned char *openpic_base;
     46 
     47 void
     48 opic_finish_setup(struct pic_ops *pic)
     49 {
     50 	uint32_t cpumask = 0;
     51 	int i;
     52 
     53 #ifdef OPENPIC_DISTRIBUTE
     54 	for (i = 0; i < ncpu; i++)
     55 		cpumask |= (1 << cpu_info[i].ci_index);
     56 #else
     57 	cpumask = 1;
     58 #endif
     59 	for (i = 0; i < pic->pic_numintrs; i++) {
     60 		/* send all interrupts to all active CPUs */
     61 		openpic_write(OPENPIC_IDEST(i), cpumask);
     62 	}
     63 }
     64 
     65 void
     66 openpic_set_priority(int cpu, int pri)
     67 {
     68 	u_int x;
     69 
     70 	x = openpic_read(OPENPIC_CPU_PRIORITY(cpu));
     71 	x &= ~OPENPIC_CPU_PRIORITY_MASK;
     72 	x |= pri;
     73 	openpic_write(OPENPIC_CPU_PRIORITY(cpu), x);
     74 }
     75 
     76 int
     77 opic_get_irq(struct pic_ops *pic, int mode)
     78 {
     79 
     80 	return openpic_read_irq(curcpu()->ci_index);
     81 }
     82 
     83 void
     84 opic_ack_irq(struct pic_ops *pic, int irq)
     85 {
     86 
     87 	openpic_eoi(curcpu()->ci_index);
     88 }
     89