/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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*
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* envctrl.h: Definitions for access to the i2c environment
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* monitoring on Ultrasparc systems.
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*
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* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
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* Copyright (C) 2000 Vinh Truong (vinh.truong@eng.sun.com)
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* VT - Add all ioctl commands and environment status definitions
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* VT - Add application note
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*/
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#ifndef _SPARC64_ENVCTRL_H
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#define _SPARC64_ENVCTRL_H 1
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#include <linux/ioctl.h>
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/* Application note:
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*
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* The driver supports 4 operations: open(), close(), ioctl(), read()
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* The device name is /dev/envctrl.
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* Below is sample usage:
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*
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* fd = open("/dev/envtrl", O_RDONLY);
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* if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0)
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* printf("error\n");
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* ret = read(fd, buf, 10);
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* close(fd);
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*
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* Notice in the case of cpu voltage and temperature, the default is
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* cpu0. If we need to know the info of cpu1, cpu2, cpu3, we need to
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* pass in cpu number in ioctl() last parameter. For example, to
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* get the voltage of cpu2:
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*
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* ioctlbuf[0] = 2;
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* if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0)
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* printf("error\n");
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* ret = read(fd, buf, 10);
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*
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* All the return values are in ascii. So check read return value
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* and do appropriate conversions in your application.
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*/
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/* IOCTL commands */
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/* Note: these commands reflect possible monitor features.
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* Some boards choose to support some of the features only.
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*/
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#define ENVCTRL_RD_CPU_TEMPERATURE _IOR('p', 0x40, int)
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#define ENVCTRL_RD_CPU_VOLTAGE _IOR('p', 0x41, int)
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#define ENVCTRL_RD_FAN_STATUS _IOR('p', 0x42, int)
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#define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p', 0x43, int)
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#define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p', 0x44, int)
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#define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p', 0x45, int)
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#define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p', 0x46, int)
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#define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p', 0x47, int)
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#define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p', 0x48, int)
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#define ENVCTRL_RD_GLOBALADDRESS _IOR('p', 0x49, int)
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/* Read return values for a voltage status request. */
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#define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0x01
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#define ENVCTRL_VOLTAGE_BAD 0x02
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#define ENVCTRL_POWERSUPPLY_BAD 0x03
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#define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0x04
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/* Read return values for a fan status request.
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* A failure match means either the fan fails or
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* the fan is not connected. Some boards have optional
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* connectors to connect extra fans.
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*
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* There are maximum 8 monitor fans. Some are cpu fans
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* some are system fans. The mask below only indicates
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* fan by order number.
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* Below is a sample application:
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*
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* if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) {
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* printf("ioctl fan failed\n");
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* }
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* if (read(fd, rslt, 1) <= 0) {
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* printf("error or fan not monitored\n");
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* } else {
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* if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) {
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* printf("all fans good\n");
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* } else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) {
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* printf("all fans bad\n");
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* } else {
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* if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) {
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* printf("fan 0 failed or not connected\n");
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* }
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* ......
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*/
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#define ENVCTRL_ALL_FANS_GOOD 0x00
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#define ENVCTRL_FAN0_FAILURE_MASK 0x01
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#define ENVCTRL_FAN1_FAILURE_MASK 0x02
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#define ENVCTRL_FAN2_FAILURE_MASK 0x04
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#define ENVCTRL_FAN3_FAILURE_MASK 0x08
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#define ENVCTRL_FAN4_FAILURE_MASK 0x10
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#define ENVCTRL_FAN5_FAILURE_MASK 0x20
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#define ENVCTRL_FAN6_FAILURE_MASK 0x40
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#define ENVCTRL_FAN7_FAILURE_MASK 0x80
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#define ENVCTRL_ALL_FANS_BAD 0xFF
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#endif /* !(_SPARC64_ENVCTRL_H) */
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