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Diffstat (limited to 'include/asm-sparc64/envctrl.h')
-rw-r--r-- | include/asm-sparc64/envctrl.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/include/asm-sparc64/envctrl.h b/include/asm-sparc64/envctrl.h new file mode 100644 index 000000000000..53a6653815eb --- /dev/null +++ b/include/asm-sparc64/envctrl.h | |||
@@ -0,0 +1,103 @@ | |||
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) */ | ||