1 /* $NetBSD: ipi_bebox.c,v 1.1 2012/10/20 14:53:37 kiyohara Exp $ */
2
3 /*-
4 * Copyright (c) 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tim Rightnour
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
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: ipi_bebox.c,v 1.1 2012/10/20 14:53:37 kiyohara Exp $");
34
35 #include <sys/atomic.h>
36 #include <sys/cpu.h>
37
38 #include <powerpc/pic/picvar.h>
39 #include <powerpc/pic/ipivar.h>
40
41
42 static void bebox_send_ipi(cpuid_t, uint32_t);
43 static void bebox_establish_ipi(int, int, void *);
44
45 void
setup_bebox_ipi(void)46 setup_bebox_ipi(void)
47 {
48
49 ipiops.ppc_send_ipi = bebox_send_ipi;
50 ipiops.ppc_establish_ipi = bebox_establish_ipi;
51 ipiops.ppc_ipi_vector = IPI_VECTOR;
52 }
53
54 static void
bebox_send_ipi(cpuid_t target,uint32_t mesg)55 bebox_send_ipi(cpuid_t target, uint32_t mesg)
56 {
57 struct cpu_info * const ci = curcpu();
58 int i;
59
60 switch (target) {
61 case IPI_DST_ALL:
62 case IPI_DST_NOTME:
63 for (i = 0; i < ncpu; i++) {
64 struct cpu_info * const dst_ci = cpu_lookup(i);
65
66 if (target == IPI_DST_ALL || dst_ci != ci) {
67 atomic_or_32(&dst_ci->ci_pending_ipis, mesg);
68 }
69 }
70 break;
71
72 default:
73 {
74 struct cpu_info * const dst_ci = cpu_lookup(target);
75
76 atomic_or_32(&dst_ci->ci_pending_ipis, mesg);
77 break;
78 }
79 }
80 }
81
82 static void
bebox_establish_ipi(int type,int level,void * ih_args)83 bebox_establish_ipi(int type, int level, void *ih_args)
84 {
85 /* XXXXX: nothing? */
86 }
87