[Intel-gfx] [PATCH 4/6] drm/i915/huc: Add debugfs for HuC loading status check

[Xiang, Haihao]

Hi Peter,

Besides debugfs, could you add a IOCTL to check HuC loading status?
Userspace media driver needs to advertise the features based on HuC to
user.

Thanks
Haihao


> From: Alex Dai <yu.dai at intel.com>
> 
> Add debugfs entry for HuC loading status check.
> 
> Signed-off-by: Alex Dai <yu.dai at intel.com>
> Signed-off-by: Peter Antoine <peter.antoine at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 32
> ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 69964c2..f5976f8 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2479,6 +2479,37 @@ static int i915_llc(struct seq_file *m, void
> *data)
>  	return 0;
>  }
>  
> +static int i915_huc_load_status_info(struct seq_file *m, void *data)
> +{
> +	struct drm_info_node *node = m->private;
> +	struct drm_i915_private *dev_priv = node->minor->dev-
> >dev_private;
> +	struct intel_uc_fw *huc_fw = &dev_priv->huc.huc_fw;
> +
> +	if (!HAS_HUC_UCODE(dev_priv->dev))
> +		return 0;
> +
> +	seq_puts(m, "HuC firmware status:\n");
> +	seq_printf(m, "\tpath: %s\n", huc_fw->uc_fw_path);
> +	seq_printf(m, "\tfetch: %s\n",
> +		intel_uc_fw_status_repr(huc_fw->fetch_status));
> +	seq_printf(m, "\tload: %s\n",
> +		intel_uc_fw_status_repr(huc_fw->load_status));
> +	seq_printf(m, "\tversion wanted: %d.%d\n",
> +		huc_fw->major_ver_wanted, huc_fw->minor_ver_wanted);
> +	seq_printf(m, "\tversion found: %d.%d\n",
> +		huc_fw->major_ver_found, huc_fw->minor_ver_found);
> +	seq_printf(m, "\theader: offset is %d; size = %d\n",
> +		huc_fw->header_offset, huc_fw->header_size);
> +	seq_printf(m, "\tuCode: offset is %d; size = %d\n",
> +		huc_fw->ucode_offset, huc_fw->ucode_size);
> +	seq_printf(m, "\tRSA: offset is %d; size = %d\n",
> +		huc_fw->rsa_offset, huc_fw->rsa_size);
> +
> +	seq_printf(m, "\nHuC status 0x%08x:\n",
> I915_READ(HUC_STATUS2));
> +
> +	return 0;
> +}
> +
>  static int i915_guc_load_status_info(struct seq_file *m, void *data)
>  {
>  	struct drm_info_node *node = m->private;
> @@ -5432,6 +5463,7 @@ static const struct drm_info_list
> i915_debugfs_list[] = {
>  	{"i915_guc_info", i915_guc_info, 0},
>  	{"i915_guc_load_status", i915_guc_load_status_info, 0},
>  	{"i915_guc_log_dump", i915_guc_log_dump, 0},
> +	{"i915_huc_load_status", i915_huc_load_status_info, 0},
>  	{"i915_frequency_info", i915_frequency_info, 0},
>  	{"i915_hangcheck_info", i915_hangcheck_info, 0},
>  	{"i915_drpc_info", i915_drpc_info, 0},