| /* $Id: envctrl.h,v 1.3 2000/11/03 00:37:40 davem Exp $ | |
| * | |
| * 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) */ |