1 /* $OpenBSD: gscpmreg.h,v 1.1 2004/09/15 20:28:53 grange Exp $ */
2 /*
3 * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #ifndef _DEV_PCI_GSCPMREG_H_
19 #define _DEV_PCI_GSCPMREG_H_
20
21 /*
22 * National Semiconductor Geode SC1100 SMI/ACPI module register definitions.
23 */
24
25 /* PCI configuration space */
26 #define GSCPM_ACPIBASE 0x40 /* ACPI I/O space base address */
27 #define GSCPM_ACPISIZE 256 /* ACPI I/O space size */
28
29 /* ACPI I/O space */
30 #define GSCPM_P_CNT 0x00 /* processor control */
31 #define GSCPM_P_CNT_CLK(val) ((val) & 0x7)
32 #define GSCPM_P_CNT_THTEN (1 << 4) /* throttle enable */
33 #define GSCPM_PM_TMR 0x1c /* PM timer */
34
35 /* CPU throttling values */
36 static const struct {
37 int level;
38 int value;
39 } gscpm_tht[] = {
40 { 88, 1 },
41 { 75, 2 },
42 { 63, 3 },
43 { 50, 4 },
44 { 38, 5 },
45 { 25, 6 },
46 { 13, 7 }
47 };
48
49 #define GSCPM_THT_LEVELS (sizeof(gscpm_tht) / sizeof(gscpm_tht[0]))
50
51 #endif /* !_DEV_PCI_GSCPMREG_H_ */