[PATCH 09/10] sysfs debug

[Ilpo Järvinen]

On Fri, 30 May 2025, Michael J. Ruhl wrote:

No changelog.

> Signed-off-by: Michael J. Ruhl <michael.j.ruhl at intel.com>
> ---
>  drivers/platform/x86/intel/pmt/crashlog.c | 31 +++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/drivers/platform/x86/intel/pmt/crashlog.c b/drivers/platform/x86/intel/pmt/crashlog.c
> index 7291c93d71df..985f2c685841 100644
> --- a/drivers/platform/x86/intel/pmt/crashlog.c
> +++ b/drivers/platform/x86/intel/pmt/crashlog.c
> @@ -469,6 +469,34 @@ trigger_store(struct device *dev, struct device_attribute *attr,
>  }
>  static DEVICE_ATTR_RW(trigger);
>  
> +#define DEBUG_REGISTER_INFO
> +#ifdef DEBUG_REGISTER_INFO

Ah, I see, this is probably your debug/test patch you included by 
accident. :-)

> +static ssize_t
> +status_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct crashlog_entry *crashlog = dev_get_drvdata(dev);
> +	u32 status = readl(crashlog->entry.disc_table + crashlog->info->status.offset);
> +	u32 control = readl(crashlog->entry.disc_table + crashlog->info->control.offset);
> +	int len = 0;
> +
> +	len += sysfs_emit_at(buf, len, "clear_support: 0x%08x\n", status & crashlog->info->status.clear_supported);
> +	len += sysfs_emit_at(buf, len, "rearmed: 0x%08x\n", status & crashlog->info->status.rearmed);
> +	len += sysfs_emit_at(buf, len, "error: 0x%08x\n", status & crashlog->info->status.error);
> +	len += sysfs_emit_at(buf, len, "consumed: 0x%08x\n", status & crashlog->info->status.consumed);
> +	len += sysfs_emit_at(buf, len, "disable: 0x%08x\n", status & crashlog->info->status.disabled);
> +	len += sysfs_emit_at(buf, len, "cleared: 0x%08x\n", status & crashlog->info->status.cleared);
> +	len += sysfs_emit_at(buf, len, "in_progress: 0x%08x\n", status & crashlog->info->status.in_progress);
> +	len += sysfs_emit_at(buf, len, "complete: 0x%08x\n", status & crashlog->info->status.complete);
> +	len += sysfs_emit_at(buf, len, "sts_off: 0x%02x  ctl_off: 0x%02x\n", crashlog->info->status.offset,
> +			     crashlog->info->control.offset);
> +	len += sysfs_emit_at(buf, len, "status:  0x%08x\n", status);
> +	len += sysfs_emit_at(buf, len, "control: 0x%08x\n", control);
> +
> +	return len;
> +}
> +static DEVICE_ATTR_RO(status);
> +#endif
> +
>  static struct attribute *pmt_crashlog_attrs[] = {
>  	&dev_attr_enable.attr,
>  	&dev_attr_trigger.attr,
> @@ -482,6 +510,9 @@ static struct attribute *pmt_crashlog_ver2_attrs[] = {
>  	&dev_attr_error.attr,
>  	&dev_attr_rearm.attr,
>  	&dev_attr_trigger.attr,
> +#ifdef DEBUG_REGISTER_INFO
> +	&dev_attr_status.attr,
> +#endif
>  	NULL
>  };
>  
> 

-- 
 i.