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_ */ 93