/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* * * envctrl.h: Definitions for access to the i2c environment *            monitoring on Ultrasparc systems. * * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be) * Copyright (C) 2000  Vinh Truong  (vinh.truong@eng.sun.com) * VT - Add all ioctl commands and environment status definitions * VT - Add application note */#ifndef _SPARC64_ENVCTRL_H#define _SPARC64_ENVCTRL_H 1 #include <linux/ioctl.h> /* Application note: * * The driver supports 4 operations: open(), close(), ioctl(), read() * The device name is /dev/envctrl. * Below is sample usage: * *	fd = open("/dev/envtrl", O_RDONLY); *	if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0) *		printf("error\n"); *	ret = read(fd, buf, 10); *	close(fd); * * Notice in the case of cpu voltage and temperature, the default is * cpu0.  If we need to know the info of cpu1, cpu2, cpu3, we need to * pass in cpu number in ioctl() last parameter.  For example, to * get the voltage of cpu2: * *	ioctlbuf[0] = 2; *	if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0) *		printf("error\n"); *	ret = read(fd, buf, 10); * * All the return values are in ascii.  So check read return value * and do appropriate conversions in your application. */ /* IOCTL commands */ /* Note: these commands reflect possible monitor features. * Some boards choose to support some of the features only. */#define ENVCTRL_RD_CPU_TEMPERATURE	_IOR('p', 0x40, int)#define ENVCTRL_RD_CPU_VOLTAGE		_IOR('p', 0x41, int)#define ENVCTRL_RD_FAN_STATUS		_IOR('p', 0x42, int)#define ENVCTRL_RD_WARNING_TEMPERATURE	_IOR('p', 0x43, int)#define ENVCTRL_RD_SHUTDOWN_TEMPERATURE	_IOR('p', 0x44, int)#define ENVCTRL_RD_VOLTAGE_STATUS	_IOR('p', 0x45, int)#define ENVCTRL_RD_SCSI_TEMPERATURE	_IOR('p', 0x46, int)#define ENVCTRL_RD_ETHERNET_TEMPERATURE	_IOR('p', 0x47, int)#define ENVCTRL_RD_MTHRBD_TEMPERATURE	_IOR('p', 0x48, int) #define ENVCTRL_RD_GLOBALADDRESS	_IOR('p', 0x49, int) /* Read return values for a voltage status request. */#define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD	0x01#define ENVCTRL_VOLTAGE_BAD			0x02#define ENVCTRL_POWERSUPPLY_BAD			0x03#define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD		0x04 /* Read return values for a fan status request. * A failure match means either the fan fails or * the fan is not connected.  Some boards have optional * connectors to connect extra fans. * * There are maximum 8 monitor fans.  Some are cpu fans * some are system fans.  The mask below only indicates * fan by order number. * Below is a sample application: * *	if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) { *		printf("ioctl fan failed\n"); *	} *	if (read(fd, rslt, 1) <= 0) { *		printf("error or fan not monitored\n"); *	} else { *		if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) { *			printf("all fans good\n"); *	} else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) { *		printf("all fans bad\n"); *	} else { *		if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) { *			printf("fan 0 failed or not connected\n"); *	} *	...... */ #define ENVCTRL_ALL_FANS_GOOD			0x00#define ENVCTRL_FAN0_FAILURE_MASK		0x01#define ENVCTRL_FAN1_FAILURE_MASK		0x02#define ENVCTRL_FAN2_FAILURE_MASK		0x04#define ENVCTRL_FAN3_FAILURE_MASK		0x08#define ENVCTRL_FAN4_FAILURE_MASK		0x10#define ENVCTRL_FAN5_FAILURE_MASK		0x20#define ENVCTRL_FAN6_FAILURE_MASK		0x40#define ENVCTRL_FAN7_FAILURE_MASK		0x80#define ENVCTRL_ALL_FANS_BAD 			0xFF #endif /* !(_SPARC64_ENVCTRL_H) */