1 files changed, 103 insertions, 0 deletions

diff --git a/include/asm-sparc/envctrl.h b/include/asm-sparc/envctrl.h
new file mode 100644
index 000000000000..624fa7e2da8e
--- /dev/null
+++ b/include/asm-sparc/envctrl.h
@@ -0,0 +1,103 @@
+/*
+ *
+ * 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) */