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
opic_finish_setup(struct pic_ops * pic)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
openpic_set_priority(int cpu,int pri)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
opic_get_irq(struct pic_ops * pic,int mode)78 opic_get_irq(struct pic_ops *pic, int mode)
79 {
80
81 return openpic_read_irq(curcpu()->ci_index);
82 }
83
84 void
opic_ack_irq(struct pic_ops * pic,int irq)85 opic_ack_irq(struct pic_ops *pic, int irq)
86 {
87
88 openpic_eoi(curcpu()->ci_index);
89 }
90