snsc.h
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/*
* SN Platform system controller communication support
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
*/
/*
* This file contains macros and data types for communication with the
* system controllers in SGI SN systems.
*/
#ifndef _SN_SYSCTL_H_
#define _SN_SYSCTL_H_
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/semaphore.h>
#include <asm/sn/types.h>
#define CHUNKSIZE 127
/* This structure is used to track an open subchannel. */
struct subch_data_s {
nasid_t sd_nasid; /* node on which the subchannel was opened */
int sd_subch; /* subchannel number */
spinlock_t sd_rlock; /* monitor lock for rsv */
spinlock_t sd_wlock; /* monitor lock for wsv */
wait_queue_head_t sd_rq; /* wait queue for readers */
wait_queue_head_t sd_wq; /* wait queue for writers */
struct semaphore sd_rbs; /* semaphore for read buffer */
struct semaphore sd_wbs; /* semaphore for write buffer */
char sd_rb[CHUNKSIZE]; /* read buffer */
char sd_wb[CHUNKSIZE]; /* write buffer */
};
struct sysctl_data_s {
struct cdev scd_cdev; /* Character device info */
nasid_t scd_nasid; /* Node on which subchannels are opened. */
};
/* argument types */
#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */
#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */
#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low
* 7 bits will contain the data
* length. */
#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f
/* system controller event codes */
#define EV_CLASS_MASK 0xf000ul
#define EV_SEVERITY_MASK 0x0f00ul
#define EV_COMPONENT_MASK 0x00fful
#define EV_CLASS_POWER 0x1000ul
#define EV_CLASS_FAN 0x2000ul
#define EV_CLASS_TEMP 0x3000ul
#define EV_CLASS_ENV 0x4000ul
#define EV_CLASS_TEST_FAULT 0x5000ul
#define EV_CLASS_TEST_WARNING 0x6000ul
#define EV_CLASS_PWRD_NOTIFY 0x8000ul
/* ENV class codes */
#define ENV_PWRDN_PEND 0x4101ul
#define EV_SEVERITY_POWER_STABLE 0x0000ul
#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul
#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul
#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul
#define EV_SEVERITY_FAN_STABLE 0x0000ul
#define EV_SEVERITY_FAN_WARNING 0x0100ul
#define EV_SEVERITY_FAN_FAULT 0x0200ul
#define EV_SEVERITY_TEMP_STABLE 0x0000ul
#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul
#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul
#define EV_SEVERITY_TEMP_FAULT 0x0300ul
void scdrv_event_init(struct sysctl_data_s *);
#endif /* _SN_SYSCTL_H_ */