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      1 /*	$NetBSD: openpic_common.c,v 1.9 2020/07/06 11:02:44 rin 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 1.9 2020/07/06 11:02:44 rin Exp $");
     31 
     32 #ifdef _KERNEL_OPT
     33 #include "opt_openpic.h"
     34 #endif
     35 
     36 #include <sys/param.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 <powerpc/pic/picvar.h>
     45 
     46 volatile unsigned char *openpic_base;
     47 
     48 void
     49 opic_finish_setup(struct pic_ops *pic)
     50 {
     51 	uint32_t cpumask = 0;
     52 	int i;
     53 
     54 #ifdef OPENPIC_DISTRIBUTE
     55 	for (i = 0; i < ncpu; i++)
     56 		cpumask |= (1 << cpu_info[i].ci_index);
     57 #else
     58 	cpumask = 1;
     59 #endif
     60 	for (i = 0; i < pic->pic_numintrs; i++) {
     61 		/* send all interrupts to all active CPUs */
     62 		openpic_write(OPENPIC_IDEST(i), cpumask);
     63 	}
     64 }
     65 
     66 void
     67 openpic_set_priority(int cpu, int pri)
     68 {
     69 	u_int x;
     70 
     71 	x = openpic_read(OPENPIC_CPU_PRIORITY(cpu));
     72 	x &= ~OPENPIC_CPU_PRIORITY_MASK;
     73 	x |= pri;
     74 	openpic_write(OPENPIC_CPU_PRIORITY(cpu), x);
     75 }
     76 
     77 int
     78 opic_get_irq(struct pic_ops *pic, int mode)
     79 {
     80 
     81 	return openpic_read_irq(curcpu()->ci_index);
     82 }
     83 
     84 void
     85 opic_ack_irq(struct pic_ops *pic, int irq)
     86 {
     87 
     88 	openpic_eoi(curcpu()->ci_index);
     89 }
     90