[Intel-gfx] [PATCH 06/10] drm/i915/guc: Extract param logic form guc_init_fw()

[Michal Wajdeczko]

On Fri, Feb 24, 2017 at 04:40:00PM +0100, Arkadiusz Hiler wrote:
> Let intel_guc_init_fw() focus on determining and fetching the correct
> firmware.
> 
> This patch introduces intel_uc_sanitize_options() that is called from
> intel_sanitize_options().
> 
> Then, if we have GuC, we can call intel_guc_intel_fw() conditionally and

Typo.


> we do not have to do the internal checks.
> 
> v2: fix comment, notify when nuking GuC explicitly enabled (M. Wajdeczko)
> v3: fix comment again, change the nuke message (M. Wajdeczko)
> v4: update title to reflect new function name + rebase
> 
> Cc: Michal Winiarski <michal.winiarski at intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.c         |  2 ++
>  drivers/gpu/drm/i915/intel_guc_loader.c | 14 --------------
>  drivers/gpu/drm/i915/intel_uc.c         | 28 +++++++++++++++++++++++++++-
>  drivers/gpu/drm/i915/intel_uc.h         |  1 +
>  4 files changed, 30 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 56624bf..7964e7f 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -993,6 +993,8 @@ static void intel_sanitize_options(struct drm_i915_private *dev_priv)
>  
>  	i915.semaphores = intel_sanitize_semaphores(dev_priv, i915.semaphores);
>  	DRM_DEBUG_DRIVER("use GPU semaphores? %s\n", yesno(i915.semaphores));
> +
> +	intel_uc_sanitize_options(dev_priv);
>  }
>  
>  /**
> diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
> index 87b7a39..5bd1e4a 100644
> --- a/drivers/gpu/drm/i915/intel_guc_loader.c
> +++ b/drivers/gpu/drm/i915/intel_guc_loader.c
> @@ -601,17 +601,6 @@ void intel_guc_init_fw(struct intel_guc *guc)
>  	struct drm_i915_private *dev_priv = guc_to_i915(guc);
>  	const char *fw_path;
>  
> -	if (!HAS_GUC(dev_priv)) {
> -		i915.enable_guc_loading = 0;
> -		i915.enable_guc_submission = 0;
> -	} else {
> -		/* A negative value means "use platform default" */
> -		if (i915.enable_guc_loading < 0)
> -			i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
> -		if (i915.enable_guc_submission < 0)
> -			i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
> -	}
> -
>  	if (!HAS_GUC_UCODE(dev_priv)) {
>  		fw_path = NULL;

Hmm, once sanitized we should not reach this point.


>  	} else if (IS_SKYLAKE(dev_priv)) {
> @@ -634,9 +623,6 @@ void intel_guc_init_fw(struct intel_guc *guc)
>  	guc->fw.fetch_status = INTEL_UC_FIRMWARE_NONE;
>  	guc->fw.load_status = INTEL_UC_FIRMWARE_NONE;
>  
> -	/* Early (and silent) return if GuC loading is disabled */
> -	if (!i915.enable_guc_loading)
> -		return;
>  	if (fw_path == NULL)
>  		return;
>  	if (*fw_path == '\0')
> diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
> index 5c204e6..8f5aa58 100644
> --- a/drivers/gpu/drm/i915/intel_uc.c
> +++ b/drivers/gpu/drm/i915/intel_uc.c
> @@ -26,6 +26,27 @@
>  #include "intel_uc.h"
>  #include <linux/firmware.h>
>  
> +void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
> +{
> +	if (!HAS_GUC(dev_priv)) {
> +		if (i915.enable_guc_loading > 0)
> +			DRM_INFO("Ignoring GuC options, no hardware");
> +
> +		i915.enable_guc_loading = 0;
> +		i915.enable_guc_submission = 0;
> +	} else {
> +		/* A negative value means "use platform default" */
> +		if (i915.enable_guc_loading < 0)
> +			i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
> +		if (i915.enable_guc_submission < 0)
> +			i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
> +
> +		/* can't enable guc submission without guc loaded */

s/can't/Can't

> +		if (!i915.enable_guc_loading)
> +			i915.enable_guc_submission = 0;
> +	}
> +}
> +
>  void intel_uc_init_early(struct drm_i915_private *dev_priv)
>  {
>  	mutex_init(&dev_priv->guc.send_mutex);
> @@ -33,7 +54,12 @@ void intel_uc_init_early(struct drm_i915_private *dev_priv)
>  
>  void intel_uc_init_fw(struct drm_i915_private *dev_priv)
>  {
> -	intel_huc_init_fw(&dev_priv->huc);
> +	if (!i915.enable_guc_loading)
> +		return;
> +
> +	if (HAS_HUC_UCODE(dev_priv))
> +		intel_huc_init_fw(&dev_priv->huc);

Did you removed corresponding "if(HAS_HUC_UCODE)" from huc_init_fw function ?
In patch 05/10 it was still there.

-Michal

> +
>  	intel_guc_init_fw(&dev_priv->guc);
>  }
>  
> diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
> index 221f169..f8d8816 100644
> --- a/drivers/gpu/drm/i915/intel_uc.h
> +++ b/drivers/gpu/drm/i915/intel_uc.h
> @@ -184,6 +184,7 @@ struct intel_huc {
>  };
>  
>  /* intel_uc.c */
> +void intel_uc_sanitize_options(struct drm_i915_private *dev_priv);
>  void intel_uc_init_early(struct drm_i915_private *dev_priv);
>  void intel_uc_init_fw(struct drm_i915_private *dev_priv);
>  int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len);
> -- 
> 2.9.3
>