static int kenvctrld(void *__unused)
{
int poll_interval;
int whichcpu;
char tempbuf[10];
struct i2c_child_t *cputemp;
if (NULL == (cputemp = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON))) {
printk(KERN_ERR
"envctrl: kenvctrld unable to monitor CPU temp-- exiting\n");
return -ENODEV;
}
poll_interval = 5 * HZ; /* TODO env_mon_interval */
daemonize();
strcpy(current->comm, "kenvctrld");
kenvctrld_task = current;
printk(KERN_INFO "envctrl: %s starting...\n", current->comm);
for (;;) {
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(poll_interval);
current->state = TASK_RUNNING;
if(signal_pending(current))
break;
for (whichcpu = 0; whichcpu < ENVCTRL_MAX_CPU; ++whichcpu) {
if (0 < envctrl_read_cpu_info(whichcpu, cputemp,
ENVCTRL_CPUTEMP_MON,
tempbuf)) {
if (tempbuf[0] >= shutdown_temperature) {
printk(KERN_CRIT
"%s: WARNING: CPU%i temperature %i C meets or exceeds "\
"shutdown threshold %i C\n",
current->comm, whichcpu,
tempbuf[0], shutdown_temperature);
envctrl_do_shutdown();
}
}
}
}
printk(KERN_INFO "envctrl: %s exiting...\n", current->comm);
return 0;
}
static int kenvctrld(void *__unused)
{
int poll_interval;
int whichcpu;
char tempbuf[10];
struct i2c_child_t *cputemp;
if (NULL == (cputemp = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON))) {
printk(KERN_ERR
"envctrl: kenvctrld unable to monitor CPU temp-- exiting\n");
return -ENODEV;
}
poll_interval = 5000; /* TODO env_mon_interval */
printk(KERN_INFO "envctrl: %s starting...\n", current->comm);
for (;;) {
msleep_interruptible(poll_interval);
if (kthread_should_stop())
break;
for (whichcpu = 0; whichcpu < ENVCTRL_MAX_CPU; ++whichcpu) {
if (0 < envctrl_read_cpu_info(whichcpu, cputemp,
ENVCTRL_CPUTEMP_MON,
tempbuf)) {
if (tempbuf[0] >= shutdown_temperature) {
printk(KERN_CRIT
"%s: WARNING: CPU%i temperature %i C meets or exceeds "\
"shutdown threshold %i C\n",
current->comm, whichcpu,
tempbuf[0], shutdown_temperature);
envctrl_do_shutdown();
}
}
}
}
printk(KERN_INFO "envctrl: %s exiting...\n", current->comm);
return 0;
}
static int kenvctrld(void *__unused)
{
int poll_interval;
int whichcpu;
char tempbuf[10];
struct i2c_child_t *cputemp;
if (NULL == (cputemp = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON))) {
// printk(KERN_ERR PFX
;
return -ENODEV;
}
poll_interval = 5000; /* TODO env_mon_interval */
;
for (;;) {
msleep_interruptible(poll_interval);
if (kthread_should_stop())
break;
for (whichcpu = 0; whichcpu < ENVCTRL_MAX_CPU; ++whichcpu) {
if (0 < envctrl_read_cpu_info(whichcpu, cputemp,
ENVCTRL_CPUTEMP_MON,
tempbuf)) {
if (tempbuf[0] >= shutdown_temperature) {
// printk(KERN_CRIT
// "%s: WARNING: CPU%i temperature %i C meets or exceeds "\
// "shutdown threshold %i C\n",
// current->comm, whichcpu,
;
envctrl_do_shutdown();
}
}
}
}
;
return 0;
}
/* Function Description: Read a byte from /dev/envctrl. Mapped to user read().
* Return: Number of read bytes. 0 for error.
*/
static ssize_t
envctrl_read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
struct i2c_child_t *pchild;
unsigned char data[10];
int ret = 0;
/* Get the type of read as decided in ioctl() call.
* Find the appropriate i2c child.
* Get the data and put back to the user buffer.
*/
switch ((int)(long)file->private_data) {
case ENVCTRL_RD_WARNING_TEMPERATURE:
if (warning_temperature == 0)
return 0;
data[0] = (unsigned char)(warning_temperature);
ret = 1;
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_SHUTDOWN_TEMPERATURE:
if (shutdown_temperature == 0)
return 0;
data[0] = (unsigned char)(shutdown_temperature);
ret = 1;
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_MTHRBD_TEMPERATURE:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_MTHRBDTEMP_MON)))
return 0;
ret = envctrl_read_noncpu_info(pchild, ENVCTRL_MTHRBDTEMP_MON, data);
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_CPU_TEMPERATURE:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON)))
return 0;
ret = envctrl_read_cpu_info(read_cpu, pchild, ENVCTRL_CPUTEMP_MON, data);
/* Reset cpu to the default cpu0. */
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_CPU_VOLTAGE:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_CPUVOLTAGE_MON)))
return 0;
ret = envctrl_read_cpu_info(read_cpu, pchild, ENVCTRL_CPUVOLTAGE_MON, data);
/* Reset cpu to the default cpu0. */
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_SCSI_TEMPERATURE:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_SCSITEMP_MON)))
return 0;
ret = envctrl_read_noncpu_info(pchild, ENVCTRL_SCSITEMP_MON, data);
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_ETHERNET_TEMPERATURE:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_ETHERTEMP_MON)))
return 0;
ret = envctrl_read_noncpu_info(pchild, ENVCTRL_ETHERTEMP_MON, data);
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_FAN_STATUS:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_FANSTAT_MON)))
return 0;
data[0] = envctrl_i2c_read_8574(pchild->addr);
ret = envctrl_i2c_fan_status(pchild,data[0], data);
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_GLOBALADDRESS:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_GLOBALADDR_MON)))
return 0;
data[0] = envctrl_i2c_read_8574(pchild->addr);
ret = envctrl_i2c_globaladdr(pchild, data[0], data);
copy_to_user((unsigned char *)buf, data, ret);
break;
case ENVCTRL_RD_VOLTAGE_STATUS:
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_VOLTAGESTAT_MON)))
/* If voltage monitor not present, check for CPCI equivalent */
if (!(pchild = envctrl_get_i2c_child(ENVCTRL_GLOBALADDR_MON)))
return 0;
data[0] = envctrl_i2c_read_8574(pchild->addr);
ret = envctrl_i2c_voltage_status(pchild, data[0], data);
copy_to_user((unsigned char *)buf, data, ret);
break;
default:
break;
};
return ret;
}
