1 /* $Id: envctrl.h,v 1.3 2000/11/03 00:37:40 davem Exp $
2 *
3 * envctrl.h: Definitions for access to the i2c environment
4 * monitoring on Ultrasparc systems.
5 *
6 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
7 * Copyright (C) 2000 Vinh Truong (vinh.truong@eng.sun.com)
8 * VT - Add all ioctl commands and environment status definitions
9 * VT - Add application note
10 */
11 #ifndef _SPARC64_ENVCTRL_H
12 #define _SPARC64_ENVCTRL_H 1
13
14 #include <linux/ioctl.h>
15
16 /* Application note:
17 *
18 * The driver supports 4 operations: open(), close(), ioctl(), read()
19 * The device name is /dev/envctrl.
20 * Below is sample usage:
21 *
22 * fd = open("/dev/envtrl", O_RDONLY);
23 * if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0)
24 * printf("error\n");
25 * ret = read(fd, buf, 10);
26 * close(fd);
27 *
28 * Notice in the case of cpu voltage and temperature, the default is
29 * cpu0. If we need to know the info of cpu1, cpu2, cpu3, we need to
30 * pass in cpu number in ioctl() last parameter. For example, to
31 * get the voltage of cpu2:
32 *
33 * ioctlbuf[0] = 2;
34 * if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0)
35 * printf("error\n");
36 * ret = read(fd, buf, 10);
37 *
38 * All the return values are in ascii. So check read return value
39 * and do appropriate conversions in your application.
40 */
41
42 /* IOCTL commands */
43
44 /* Note: these commands reflect possible monitor features.
45 * Some boards choose to support some of the features only.
46 */
47 #define ENVCTRL_RD_CPU_TEMPERATURE _IOR('p', 0x40, int)
48 #define ENVCTRL_RD_CPU_VOLTAGE _IOR('p', 0x41, int)
49 #define ENVCTRL_RD_FAN_STATUS _IOR('p', 0x42, int)
50 #define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p', 0x43, int)
51 #define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p', 0x44, int)
52 #define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p', 0x45, int)
53 #define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p', 0x46, int)
54 #define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p', 0x47, int)
55 #define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p', 0x48, int)
56
57 #define ENVCTRL_RD_GLOBALADDRESS _IOR('p', 0x49, int)
58
59 /* Read return values for a voltage status request. */
60 #define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0x01
61 #define ENVCTRL_VOLTAGE_BAD 0x02
62 #define ENVCTRL_POWERSUPPLY_BAD 0x03
63 #define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0x04
64
65 /* Read return values for a fan status request.
66 * A failure match means either the fan fails or
67 * the fan is not connected. Some boards have optional
68 * connectors to connect extra fans.
69 *
70 * There are maximum 8 monitor fans. Some are cpu fans
71 * some are system fans. The mask below only indicates
72 * fan by order number.
73 * Below is a sample application:
74 *
75 * if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) {
76 * printf("ioctl fan failed\n");
77 * }
78 * if (read(fd, rslt, 1) <= 0) {
79 * printf("error or fan not monitored\n");
80 * } else {
81 * if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) {
82 * printf("all fans good\n");
83 * } else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) {
84 * printf("all fans bad\n");
85 * } else {
86 * if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) {
87 * printf("fan 0 failed or not connected\n");
88 * }
89 * ......
90 */
91
92 #define ENVCTRL_ALL_FANS_GOOD 0x00
93 #define ENVCTRL_FAN0_FAILURE_MASK 0x01
94 #define ENVCTRL_FAN1_FAILURE_MASK 0x02
95 #define ENVCTRL_FAN2_FAILURE_MASK 0x04
96 #define ENVCTRL_FAN3_FAILURE_MASK 0x08
97 #define ENVCTRL_FAN4_FAILURE_MASK 0x10
98 #define ENVCTRL_FAN5_FAILURE_MASK 0x20
99 #define ENVCTRL_FAN6_FAILURE_MASK 0x40
100 #define ENVCTRL_FAN7_FAILURE_MASK 0x80
101 #define ENVCTRL_ALL_FANS_BAD 0xFF
102
103 #endif /* !(_SPARC64_ENVCTRL_H) */
104
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