| 1 |
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| 2 | |
| 3 | *
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| 4 | * envctrl.h: Definitions for access to the i2c environment
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| 5 | * monitoring on Ultrasparc systems.
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| 6 | *
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| 7 | * Copyright (C) 1998 Eddie C. Dost ([email protected])
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| 8 | * Copyright (C) 2000 Vinh Truong ([email protected])
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| 9 | * VT - Add all ioctl commands and environment status definitions
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| 10 | * VT - Add application note
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| 11 |
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| 12 | #ifndef _SPARC64_ENVCTRL_H
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| 13 | #define _SPARC64_ENVCTRL_H 1
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| 14 |
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| 15 | #include <linux/ioctl.h>
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| 16 |
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| 17 | |
| 18 | *
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| 19 | * The driver supports 4 operations: open(), close(), ioctl(), read()
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| 20 | * The device name is /dev/envctrl.
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| 21 | * Below is sample usage:
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| 22 | *
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| 23 | * fd = open("/dev/envtrl", O_RDONLY);
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| 24 | * if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0)
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| 25 | * printf("error\n");
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| 26 | * ret = read(fd, buf, 10);
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| 27 | * close(fd);
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| 28 | *
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| 29 | * Notice in the case of cpu voltage and temperature, the default is
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| 30 | * cpu0. If we need to know the info of cpu1, cpu2, cpu3, we need to
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| 31 | * pass in cpu number in ioctl() last parameter. For example, to
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| 32 | * get the voltage of cpu2:
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| 33 | *
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| 34 | * ioctlbuf[0] = 2;
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| 35 | * if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0)
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| 36 | * printf("error\n");
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| 37 | * ret = read(fd, buf, 10);
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| 38 | *
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| 39 | * All the return values are in ascii. So check read return value
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| 40 | * and do appropriate conversions in your application.
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| 41 |
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| 42 |
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| 43 |
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| 44 |
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| 45 | |
| 46 | * Some boards choose to support some of the features only.
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| 47 |
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| 48 | #define ENVCTRL_RD_CPU_TEMPERATURE _IOR('p', 0x40, int)
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| 49 | #define ENVCTRL_RD_CPU_VOLTAGE _IOR('p', 0x41, int)
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| 50 | #define ENVCTRL_RD_FAN_STATUS _IOR('p', 0x42, int)
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| 51 | #define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p', 0x43, int)
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| 52 | #define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p', 0x44, int)
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| 53 | #define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p', 0x45, int)
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| 54 | #define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p', 0x46, int)
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| 55 | #define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p', 0x47, int)
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| 56 | #define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p', 0x48, int)
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| 57 |
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| 58 | #define ENVCTRL_RD_GLOBALADDRESS _IOR('p', 0x49, int)
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| 59 |
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| 60 |
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| 61 | #define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0x01
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| 62 | #define ENVCTRL_VOLTAGE_BAD 0x02
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| 63 | #define ENVCTRL_POWERSUPPLY_BAD 0x03
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| 64 | #define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0x04
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| 65 |
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| 66 | |
| 67 | * A failure match means either the fan fails or
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| 68 | * the fan is not connected. Some boards have optional
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| 69 | * connectors to connect extra fans.
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| 70 | *
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| 71 | * There are maximum 8 monitor fans. Some are cpu fans
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| 72 | * some are system fans. The mask below only indicates
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| 73 | * fan by order number.
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| 74 | * Below is a sample application:
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| 75 | *
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| 76 | * if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) {
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| 77 | * printf("ioctl fan failed\n");
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| 78 | * }
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| 79 | * if (read(fd, rslt, 1) <= 0) {
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| 80 | * printf("error or fan not monitored\n");
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| 81 | * } else {
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| 82 | * if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) {
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| 83 | * printf("all fans good\n");
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| 84 | * } else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) {
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| 85 | * printf("all fans bad\n");
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| 86 | * } else {
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| 87 | * if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) {
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| 88 | * printf("fan 0 failed or not connected\n");
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| 89 | * }
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| 90 | * ......
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| 91 |
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| 92 |
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| 93 | #define ENVCTRL_ALL_FANS_GOOD 0x00
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| 94 | #define ENVCTRL_FAN0_FAILURE_MASK 0x01
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| 95 | #define ENVCTRL_FAN1_FAILURE_MASK 0x02
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| 96 | #define ENVCTRL_FAN2_FAILURE_MASK 0x04
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| 97 | #define ENVCTRL_FAN3_FAILURE_MASK 0x08
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| 98 | #define ENVCTRL_FAN4_FAILURE_MASK 0x10
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| 99 | #define ENVCTRL_FAN5_FAILURE_MASK 0x20
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| 100 | #define ENVCTRL_FAN6_FAILURE_MASK 0x40
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| 101 | #define ENVCTRL_FAN7_FAILURE_MASK 0x80
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| 102 | #define ENVCTRL_ALL_FANS_BAD 0xFF
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| 103 |
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| 104 | #endif
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