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/*
*
* 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) */