1 /*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: @(#)sys_machdep.c 5.5 (Berkeley) 1/19/91
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: releng/6.0/sys/arm/arm/sys_machdep.c 142519 2005-02-25 22:56:16Z cognet $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/proc.h>
42 #include <sys/sysproto.h>
43 #include <sys/syscall.h>
44 #include <sys/sysent.h>
45
46 #include <machine/sysarch.h>
47
48 #ifndef _SYS_SYSPROTO_H_
49 struct sysarch_args {
50 int op;
51 char *parms;
52 };
53 #endif
54
55 /* Prototypes */
56 static int arm32_sync_icache (struct thread *, void *);
57 static int arm32_drain_writebuf(struct thread *, void *);
58
59 static int
60 arm32_sync_icache(struct thread *td, void *args)
61 {
62 struct arm_sync_icache_args ua;
63 int error;
64
65 if ((error = copyin(args, &ua, sizeof(ua))) != 0)
66 return (error);
67
68 cpu_icache_sync_range(ua.addr, ua.len);
69
70 td->td_retval[0] = 0;
71 return(0);
72 }
73
74 static int
75 arm32_drain_writebuf(struct thread *td, void *args)
76 {
77 /* No args. */
78
79 td->td_retval[0] = 0;
80 cpu_drain_writebuf();
81 return(0);
82 }
83
84 static int
85 arm32_set_tp(struct thread *td, void *args)
86 {
87
88 td->td_md.md_tp = args;
89 return (0);
90 }
91
92 static int
93 arm32_get_tp(struct thread *td, void *args)
94 {
95
96 td->td_retval[0] = (uint32_t)td->td_md.md_tp;
97 return (0);
98 }
99
100 int
101 sysarch(td, uap)
102 struct thread *td;
103 register struct sysarch_args *uap;
104 {
105 int error;
106
107 switch (uap->op) {
108 case ARM_SYNC_ICACHE :
109 error = arm32_sync_icache(td, uap->parms);
110 break;
111
112 case ARM_DRAIN_WRITEBUF :
113 error = arm32_drain_writebuf(td, uap->parms);
114 break;
115 case ARM_SET_TP:
116 error = arm32_set_tp(td, uap->parms);
117 break;
118 case ARM_GET_TP:
119 error = arm32_get_tp(td, uap->parms);
120 break;
121 default:
122 error = EINVAL;
123 break;
124 }
125 return (error);
126 }
127
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