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Diffstat (limited to 'arch/sparc/include/uapi/asm/envctrl.h')
| -rw-r--r-- | arch/sparc/include/uapi/asm/envctrl.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/sparc/include/uapi/asm/envctrl.h b/arch/sparc/include/uapi/asm/envctrl.h new file mode 100644 index 000000000..cf8aa0a14 --- /dev/null +++ b/arch/sparc/include/uapi/asm/envctrl.h @@ -0,0 +1,104 @@ +/* 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', 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) */ |