| /* $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) */ |
