1/*
2 *      Intel_SCU 0.2:  An Intel SCU IOH Based Watchdog Device
3 *			for Intel part #(s):
4 *				- AF82MP20 PCH
5 *
6 *      Copyright (C) 2009-2010 Intel Corporation. All rights reserved.
7 *
8 *      This program is free software; you can redistribute it and/or
9 *      modify it under the terms of version 2 of the GNU General
10 *      Public License as published by the Free Software Foundation.
11 *
12 *      This program is distributed in the hope that it will be
13 *      useful, but WITHOUT ANY WARRANTY; without even the implied
14 *      warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 *      PURPOSE.  See the GNU General Public License for more details.
16 *      You should have received a copy of the GNU General Public
17 *      License along with this program; if not, write to the Free
18 *      Software Foundation, Inc., 59 Temple Place - Suite 330,
19 *      Boston, MA  02111-1307, USA.
20 *      The full GNU General Public License is included in this
21 *      distribution in the file called COPYING.
22 *
23 */
24
25#ifndef __INTEL_SCU_WATCHDOG_H
26#define __INTEL_SCU_WATCHDOG_H
27
28#define WDT_VER "0.3"
29
30/* minimum time between interrupts */
31#define MIN_TIME_CYCLE 1
32
33/* Time from warning to reboot is 2 seconds */
34#define DEFAULT_SOFT_TO_HARD_MARGIN 2
35
36#define MAX_TIME 170
37
38#define DEFAULT_TIME 5
39
40#define MAX_SOFT_TO_HARD_MARGIN (MAX_TIME-MIN_TIME_CYCLE)
41
42/* Ajustment to clock tick frequency to make timing come out right */
43#define FREQ_ADJUSTMENT 8
44
45struct intel_scu_watchdog_dev {
46	ulong driver_open;
47	ulong driver_closed;
48	u32 timer_started;
49	u32 timer_set;
50	u32 threshold;
51	u32 soft_threshold;
52	u32 __iomem *timer_load_count_addr;
53	u32 __iomem *timer_current_value_addr;
54	u32 __iomem *timer_control_addr;
55	u32 __iomem *timer_clear_interrupt_addr;
56	u32 __iomem *timer_interrupt_status_addr;
57	struct sfi_timer_table_entry *timer_tbl_ptr;
58	struct notifier_block intel_scu_notifier;
59	struct miscdevice miscdev;
60};
61
62extern int sfi_mtimer_num;
63
64/* extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint); */
65#endif /* __INTEL_SCU_WATCHDOG_H */
66