1 /* $NetBSD: cpu_counter.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */
2
3 /*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
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 #ifndef _OR1K_CPU_COUNTER_H_
33 #define _OR1K_CPU_COUNTER_H_
34
35 /*
36 * OR1K specific support for CPU counter.
37 */
38
39 #ifdef _KERNEL
40
41 #include <sys/cpu.h>
42 #include <or1k/armreg.h>
43
44 #define cpu_hascounter() (curcpu()->ci_data.cpu_cc_freq != 0)
45 #define cpu_counter() cpu_counter32()
46
47 static __inline uint32_t
cpu_counter32(void)48 cpu_counter32(void)
49 {
50 return 0; /* XXX */
51 }
52
53 static __inline uint64_t
cpu_frequency(struct cpu_info * ci)54 cpu_frequency(struct cpu_info *ci)
55 {
56 return ci->ci_data.cpu_cc_freq;
57 }
58
59 #endif /* _KERNEL */
60
61 #endif /* _OR1K_CPU_COUNTER_H_ */
62