blob: 4be62eda9fbc6ddac0522e8d321b7afd1bba015a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * SN Platform system controller communication support
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
Aaron Young28ff6b9b2006-01-23 09:00:51 -08008 * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 */
10
11/*
12 * This file contains macros and data types for communication with the
13 * system controllers in SGI SN systems.
14 */
15
16#ifndef _SN_SYSCTL_H_
17#define _SN_SYSCTL_H_
18
19#include <linux/types.h>
20#include <linux/spinlock.h>
21#include <linux/wait.h>
22#include <linux/kobject.h>
23#include <linux/fs.h>
24#include <linux/cdev.h>
Matthew Wilcox6188e102008-04-18 22:21:05 -040025#include <linux/semaphore.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <asm/sn/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
28#define CHUNKSIZE 127
29
30/* This structure is used to track an open subchannel. */
31struct subch_data_s {
32 nasid_t sd_nasid; /* node on which the subchannel was opened */
33 int sd_subch; /* subchannel number */
34 spinlock_t sd_rlock; /* monitor lock for rsv */
35 spinlock_t sd_wlock; /* monitor lock for wsv */
36 wait_queue_head_t sd_rq; /* wait queue for readers */
37 wait_queue_head_t sd_wq; /* wait queue for writers */
38 struct semaphore sd_rbs; /* semaphore for read buffer */
39 struct semaphore sd_wbs; /* semaphore for write buffer */
40
41 char sd_rb[CHUNKSIZE]; /* read buffer */
42 char sd_wb[CHUNKSIZE]; /* write buffer */
43};
44
45struct sysctl_data_s {
46 struct cdev scd_cdev; /* Character device info */
47 nasid_t scd_nasid; /* Node on which subchannels are opened. */
48};
49
Greg Howard67639de2005-04-25 13:28:52 -070050
51/* argument types */
52#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */
53#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */
54#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low
55 * 7 bits will contain the data
56 * length. */
57#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f
58
59
60/* system controller event codes */
61#define EV_CLASS_MASK 0xf000ul
62#define EV_SEVERITY_MASK 0x0f00ul
63#define EV_COMPONENT_MASK 0x00fful
64
65#define EV_CLASS_POWER 0x1000ul
66#define EV_CLASS_FAN 0x2000ul
67#define EV_CLASS_TEMP 0x3000ul
68#define EV_CLASS_ENV 0x4000ul
69#define EV_CLASS_TEST_FAULT 0x5000ul
70#define EV_CLASS_TEST_WARNING 0x6000ul
71#define EV_CLASS_PWRD_NOTIFY 0x8000ul
72
Aaron Young28ff6b9b2006-01-23 09:00:51 -080073/* ENV class codes */
74#define ENV_PWRDN_PEND 0x4101ul
75
Greg Howard67639de2005-04-25 13:28:52 -070076#define EV_SEVERITY_POWER_STABLE 0x0000ul
77#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
78#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul
79#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul
80#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul
81
82#define EV_SEVERITY_FAN_STABLE 0x0000ul
83#define EV_SEVERITY_FAN_WARNING 0x0100ul
84#define EV_SEVERITY_FAN_FAULT 0x0200ul
85
86#define EV_SEVERITY_TEMP_STABLE 0x0000ul
87#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul
88#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul
89#define EV_SEVERITY_TEMP_FAULT 0x0300ul
90
91void scdrv_event_init(struct sysctl_data_s *);
92
Linus Torvalds1da177e2005-04-16 15:20:36 -070093#endif /* _SN_SYSCTL_H_ */