1/*
 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 *
 8 * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
 9 */
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/fs.h>
23#include <linux/cdev.h>
24#include <linux/semaphore.h>
25#include <asm/sn/types.h>
26
27#define CHUNKSIZE 127
28
29/* This structure is used to track an open subchannel. */
30struct subch_data_s {
31	nasid_t sd_nasid;	/* node on which the subchannel was opened */
32	int sd_subch;		/* subchannel number */
33	spinlock_t sd_rlock;	/* monitor lock for rsv */
34	spinlock_t sd_wlock;	/* monitor lock for wsv */
35	wait_queue_head_t sd_rq;	/* wait queue for readers */
36	wait_queue_head_t sd_wq;	/* wait queue for writers */
37	struct semaphore sd_rbs;	/* semaphore for read buffer */
38	struct semaphore sd_wbs;	/* semaphore for write buffer */
39
40	char sd_rb[CHUNKSIZE];	/* read buffer */
41	char sd_wb[CHUNKSIZE];	/* write buffer */
42};
43
44struct sysctl_data_s {
45	struct cdev scd_cdev;	/* Character device info */
46	nasid_t scd_nasid;	/* Node on which subchannels are opened. */
47};
48
49
50/* argument types */
51#define IR_ARG_INT              0x00    /* 4-byte integer (big-endian)  */
52#define IR_ARG_ASCII            0x01    /* null-terminated ASCII string */
53#define IR_ARG_UNKNOWN          0x80    /* unknown data type.  The low
54                                         * 7 bits will contain the data
55                                         * length.                      */
56#define IR_ARG_UNKNOWN_LENGTH_MASK	0x7f
57
58
59/* system controller event codes */
60#define EV_CLASS_MASK		0xf000ul
61#define EV_SEVERITY_MASK	0x0f00ul
62#define EV_COMPONENT_MASK	0x00fful
63
64#define EV_CLASS_POWER		0x1000ul
65#define EV_CLASS_FAN		0x2000ul
66#define EV_CLASS_TEMP		0x3000ul
67#define EV_CLASS_ENV		0x4000ul
68#define EV_CLASS_TEST_FAULT	0x5000ul
69#define EV_CLASS_TEST_WARNING	0x6000ul
70#define EV_CLASS_PWRD_NOTIFY	0x8000ul
71
72/* ENV class codes */
73#define ENV_PWRDN_PEND		0x4101ul
74
75#define EV_SEVERITY_POWER_STABLE	0x0000ul
76#define EV_SEVERITY_POWER_LOW_WARNING	0x0100ul
77#define EV_SEVERITY_POWER_HIGH_WARNING	0x0200ul
78#define EV_SEVERITY_POWER_HIGH_FAULT	0x0300ul
79#define EV_SEVERITY_POWER_LOW_FAULT	0x0400ul
80
81#define EV_SEVERITY_FAN_STABLE		0x0000ul
82#define EV_SEVERITY_FAN_WARNING		0x0100ul
83#define EV_SEVERITY_FAN_FAULT		0x0200ul
84
85#define EV_SEVERITY_TEMP_STABLE		0x0000ul
86#define EV_SEVERITY_TEMP_ADVISORY	0x0100ul
87#define EV_SEVERITY_TEMP_CRITICAL	0x0200ul
88#define EV_SEVERITY_TEMP_FAULT		0x0300ul
89
90void scdrv_event_init(struct sysctl_data_s *);
91
92#endif /* _SN_SYSCTL_H_ */