/* 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' , 0 x40, int )
#define ENVCTRL_RD_CPU_VOLTAGE _IOR('p' , 0 x41, int )
#define ENVCTRL_RD_FAN_STATUS _IOR('p' , 0 x42, int )
#define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p' , 0 x43, int )
#define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p' , 0 x44, int )
#define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p' , 0 x45, int )
#define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p' , 0 x46, int )
#define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p' , 0 x47, int )
#define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p' , 0 x48, int )
#define ENVCTRL_RD_GLOBALADDRESS _IOR('p' , 0 x49, int )
/* Read return values for a voltage status request. */
#define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0 x01
#define ENVCTRL_VOLTAGE_BAD 0 x02
#define ENVCTRL_POWERSUPPLY_BAD 0 x03
#define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0 x04
/* 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 0 x00
#define ENVCTRL_FAN0_FAILURE_MASK 0 x01
#define ENVCTRL_FAN1_FAILURE_MASK 0 x02
#define ENVCTRL_FAN2_FAILURE_MASK 0 x04
#define ENVCTRL_FAN3_FAILURE_MASK 0 x08
#define ENVCTRL_FAN4_FAILURE_MASK 0 x10
#define ENVCTRL_FAN5_FAILURE_MASK 0 x20
#define ENVCTRL_FAN6_FAILURE_MASK 0 x40
#define ENVCTRL_FAN7_FAILURE_MASK 0 x80
#define ENVCTRL_ALL_FANS_BAD 0 xFF
#endif /* !(_SPARC64_ENVCTRL_H) */
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