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openpic_common.c revision 1.2 
      1 /*	$NetBSD: openpic_common.c,v 1.2 2008/04/08 02:33:03 garbled 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  * 3. Neither the name of The NetBSD Foundation nor the names of its
     16  *    contributors may be used to endorse or promote products derived
     17  *    from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: openpic_common.c,v 1.2 2008/04/08 02:33:03 garbled Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/malloc.h>
     37 #include <sys/kernel.h>
     38 
     39 #include <uvm/uvm_extern.h>
     40 
     41 #include <machine/pio.h>
     42 #include <powerpc/openpic.h>
     43 
     44 #include <arch/powerpc/pic/picvar.h>
     45 
     46 #include "opt_interrupt.h"
     47 
     48 volatile unsigned char *openpic_base;
     49 
     50 void
     51 opic_finish_setup(struct pic_ops *pic)
     52 {
     53 	uint32_t cpumask = 0;
     54 	int i;
     55 
     56 #ifdef OPENPIC_DISTRIBUTE
     57 	for (i = 0; i < ncpu; i++)
     58 		cpumask |= (1 << cpu_info[i].ci_cpuid);
     59 #else
     60 	cpumask = 1;
     61 #endif
     62 	for (i = 0; i < pic->pic_numintrs; i++) {
     63 		/* send all interrupts to all active CPUs */
     64 		openpic_write(OPENPIC_IDEST(i), cpumask);
     65 	}
     66 }
     67 
     68 void
     69 openpic_set_priority(int cpu, int pri)
     70 {
     71 	u_int x;
     72 
     73 	x = openpic_read(OPENPIC_CPU_PRIORITY(cpu));
     74 	x &= ~OPENPIC_CPU_PRIORITY_MASK;
     75 	x |= pri;
     76 	openpic_write(OPENPIC_CPU_PRIORITY(cpu), x);
     77 }
     78 
     79 int
     80 opic_get_irq(struct pic_ops *pic, int mode)
     81 {
     82 
     83 	return openpic_read_irq(curcpu()->ci_index);
     84 }
     85 
     86 void
     87 opic_ack_irq(struct pic_ops *pic, int irq)
     88 {
     89 
     90 	openpic_eoi(curcpu()->ci_index);
     91 }
     92