/*
* First write to nvram, if fatal error, that is the only
* place we log the info. The error will be picked up
* on the next reboot by rtasd. If not fatal, run the
* method for the type of error. Currently, only RTAS
* errors have methods implemented, but in the future
* there might be a need to store data in nvram before a
* call to panic().
*
* XXX We write to nvram periodically, to indicate error has
* been written and sync'd, but there is a possibility
* that if we don't shutdown correctly, a duplicate error
* record will be created on next reboot.
*/
void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
{
unsigned long offset;
unsigned long s;
int len = 0;
pr_debug("rtasd: logging event\n");
if (buf == NULL)
return;
spin_lock_irqsave(&rtasd_log_lock, s);
/* get length and increase count */
switch (err_type & ERR_TYPE_MASK) {
case ERR_TYPE_RTAS_LOG:
len = log_rtas_len(buf);
if (!(err_type & ERR_FLAG_BOOT))
error_log_cnt++;
break;
case ERR_TYPE_KERNEL_PANIC:
default:
WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
spin_unlock_irqrestore(&rtasd_log_lock, s);
return;
}
#ifdef CONFIG_PPC64
/* Write error to NVRAM */
if (logging_enabled && !(err_type & ERR_FLAG_BOOT))
nvram_write_error_log(buf, len, err_type, error_log_cnt);
#endif /* CONFIG_PPC64 */
/*
* rtas errors can occur during boot, and we do want to capture
* those somewhere, even if nvram isn't ready (why not?), and even
* if rtasd isn't ready. Put them into the boot log, at least.
*/
if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG)
printk_log_rtas(buf, len);
/* Check to see if we need to or have stopped logging */
if (fatal || !logging_enabled) {
logging_enabled = 0;
WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
spin_unlock_irqrestore(&rtasd_log_lock, s);
return;
}
/* call type specific method for error */
switch (err_type & ERR_TYPE_MASK) {
case ERR_TYPE_RTAS_LOG:
offset = rtas_error_log_buffer_max *
((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
/* First copy over sequence number */
memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int));
/* Second copy over error log data */
offset += sizeof(int);
memcpy(&rtas_log_buf[offset], buf, len);
if (rtas_log_size < LOG_NUMBER)
rtas_log_size += 1;
else
rtas_log_start += 1;
WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
spin_unlock_irqrestore(&rtasd_log_lock, s);
wake_up_interruptible(&rtas_log_wait);
break;
case ERR_TYPE_KERNEL_PANIC:
default:
WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
spin_unlock_irqrestore(&rtasd_log_lock, s);
return;
}
}
/*
* First write to nvram, if fatal error, that is the only
* place we log the info. The error will be picked up
* on the next reboot by rtasd. If not fatal, run the
* method for the type of error. Currently, only RTAS
* errors have methods implemented, but in the future
* there might be a need to store data in nvram before a
* call to panic().
*
* XXX We write to nvram periodically, to indicate error has
* been written and sync'd, but there is a possibility
* that if we don't shutdown correctly, a duplicate error
* record will be created on next reboot.
*/
void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
{
unsigned long offset;
unsigned long s;
int len = 0;
DEBUG("logging event\n");
if (buf == NULL)
return;
spin_lock_irqsave(&log_lock, s);
/* get length and increase count */
switch (err_type & ERR_TYPE_MASK) {
case ERR_TYPE_RTAS_LOG:
len = log_rtas_len(buf);
if (!(err_type & ERR_FLAG_BOOT))
error_log_cnt++;
break;
case ERR_TYPE_KERNEL_PANIC:
default:
spin_unlock_irqrestore(&log_lock, s);
return;
}
/* Write error to NVRAM */
if (!no_more_logging && !(err_type & ERR_FLAG_BOOT))
nvram_write_error_log(buf, len, err_type);
/* Check to see if we need to or have stopped logging */
if (fatal || no_more_logging) {
no_more_logging = 1;
spin_unlock_irqrestore(&log_lock, s);
return;
}
/* call type specific method for error */
switch (err_type & ERR_TYPE_MASK) {
case ERR_TYPE_RTAS_LOG:
/* put into syslog and error_log file */
printk_log_rtas(buf, len);
offset = rtas_error_log_buffer_max *
((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
/* First copy over sequence number */
memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int));
/* Second copy over error log data */
offset += sizeof(int);
memcpy(&rtas_log_buf[offset], buf, len);
if (rtas_log_size < LOG_NUMBER)
rtas_log_size += 1;
else
rtas_log_start += 1;
spin_unlock_irqrestore(&log_lock, s);
wake_up_interruptible(&rtas_log_wait);
break;
case ERR_TYPE_KERNEL_PANIC:
default:
spin_unlock_irqrestore(&log_lock, s);
return;
}
}