1/* 2 * 3 * envctrl.h: Definitions for access to the i2c environment 4 * monitoring on Ultrasparc systems. 5 * 6 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) 7 * Copyright (C) 2000 Vinh Truong (vinh.truong@eng.sun.com) 8 * VT - Add all ioctl commands and environment status definitions 9 * VT - Add application note 10 */ 11#ifndef _SPARC64_ENVCTRL_H 12#define _SPARC64_ENVCTRL_H 1 13 14#include <linux/ioctl.h> 15 16/* Application note: 17 * 18 * The driver supports 4 operations: open(), close(), ioctl(), read() 19 * The device name is /dev/envctrl. 20 * Below is sample usage: 21 * 22 * fd = open("/dev/envtrl", O_RDONLY); 23 * if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0) 24 * printf("error\n"); 25 * ret = read(fd, buf, 10); 26 * close(fd); 27 * 28 * Notice in the case of cpu voltage and temperature, the default is 29 * cpu0. If we need to know the info of cpu1, cpu2, cpu3, we need to 30 * pass in cpu number in ioctl() last parameter. For example, to 31 * get the voltage of cpu2: 32 * 33 * ioctlbuf[0] = 2; 34 * if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0) 35 * printf("error\n"); 36 * ret = read(fd, buf, 10); 37 * 38 * All the return values are in ascii. So check read return value 39 * and do appropriate conversions in your application. 40 */ 41 42/* IOCTL commands */ 43 44/* Note: these commands reflect possible monitor features. 45 * Some boards choose to support some of the features only. 46 */ 47#define ENVCTRL_RD_CPU_TEMPERATURE _IOR('p', 0x40, int) 48#define ENVCTRL_RD_CPU_VOLTAGE _IOR('p', 0x41, int) 49#define ENVCTRL_RD_FAN_STATUS _IOR('p', 0x42, int) 50#define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p', 0x43, int) 51#define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p', 0x44, int) 52#define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p', 0x45, int) 53#define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p', 0x46, int) 54#define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p', 0x47, int) 55#define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p', 0x48, int) 56 57#define ENVCTRL_RD_GLOBALADDRESS _IOR('p', 0x49, int) 58 59/* Read return values for a voltage status request. */ 60#define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0x01 61#define ENVCTRL_VOLTAGE_BAD 0x02 62#define ENVCTRL_POWERSUPPLY_BAD 0x03 63#define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0x04 64 65/* Read return values for a fan status request. 66 * A failure match means either the fan fails or 67 * the fan is not connected. Some boards have optional 68 * connectors to connect extra fans. 69 * 70 * There are maximum 8 monitor fans. Some are cpu fans 71 * some are system fans. The mask below only indicates 72 * fan by order number. 73 * Below is a sample application: 74 * 75 * if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) { 76 * printf("ioctl fan failed\n"); 77 * } 78 * if (read(fd, rslt, 1) <= 0) { 79 * printf("error or fan not monitored\n"); 80 * } else { 81 * if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) { 82 * printf("all fans good\n"); 83 * } else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) { 84 * printf("all fans bad\n"); 85 * } else { 86 * if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) { 87 * printf("fan 0 failed or not connected\n"); 88 * } 89 * ...... 90 */ 91 92#define ENVCTRL_ALL_FANS_GOOD 0x00 93#define ENVCTRL_FAN0_FAILURE_MASK 0x01 94#define ENVCTRL_FAN1_FAILURE_MASK 0x02 95#define ENVCTRL_FAN2_FAILURE_MASK 0x04 96#define ENVCTRL_FAN3_FAILURE_MASK 0x08 97#define ENVCTRL_FAN4_FAILURE_MASK 0x10 98#define ENVCTRL_FAN5_FAILURE_MASK 0x20 99#define ENVCTRL_FAN6_FAILURE_MASK 0x40 100#define ENVCTRL_FAN7_FAILURE_MASK 0x80 101#define ENVCTRL_ALL_FANS_BAD 0xFF 102 103#endif /* !(_SPARC64_ENVCTRL_H) */ 104