[Intel-gfx] [PATCH 2/3] drm/i915/guc: general tidying up (loader)

[Tvrtko Ursulin]

On 12/09/2016 21:19, Dave Gordon wrote:
> Renaming to more consistent scheme, delete unused definitions
>
> Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
> ---
>   drivers/gpu/drm/i915/i915_guc_reg.h     |  3 ---
>   drivers/gpu/drm/i915/intel_guc_loader.c | 27 ++++++++++++++++-----------
>   2 files changed, 16 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_guc_reg.h b/drivers/gpu/drm/i915/i915_guc_reg.h
> index cf5a65b..a47e1e4 100644
> --- a/drivers/gpu/drm/i915/i915_guc_reg.h
> +++ b/drivers/gpu/drm/i915/i915_guc_reg.h
> @@ -103,9 +103,6 @@
>   #define HOST2GUC_INTERRUPT		_MMIO(0xc4c8)
>   #define   HOST2GUC_TRIGGER		  (1<<0)
>   
> -#define DRBMISC1			0x1984
> -#define   DOORBELL_ENABLE		  (1<<0)
> -
>   #define GEN8_DRBREGL(x)			_MMIO(0x1000 + (x) * 8)
>   #define   GEN8_DRB_VALID		  (1<<0)
>   #define GEN8_DRBREGU(x)			_MMIO(0x1000 + (x) * 8 + 4)
> diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
> index 0021748..6fd39ef 100644
> --- a/drivers/gpu/drm/i915/intel_guc_loader.c
> +++ b/drivers/gpu/drm/i915/intel_guc_loader.c
> @@ -97,7 +97,7 @@ const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status)
>   	}
>   };
>   
> -static void direct_interrupts_to_host(struct drm_i915_private *dev_priv)
> +static void guc_interrupts_release(struct drm_i915_private *dev_priv)
>   {
>   	struct intel_engine_cs *engine;
>   	int irqs;
> @@ -114,7 +114,7 @@ static void direct_interrupts_to_host(struct drm_i915_private *dev_priv)
>   	I915_WRITE(GUC_WD_VECS_IER, 0);
>   }
>   
> -static void direct_interrupts_to_guc(struct drm_i915_private *dev_priv)
> +static void guc_interrupts_capture(struct drm_i915_private *dev_priv)
>   {
>   	struct intel_engine_cs *engine;
>   	int irqs;
> @@ -179,7 +179,12 @@ static u32 get_core_family(struct drm_i915_private *dev_priv)
>   	}
>   }
>   
> -static void set_guc_init_params(struct drm_i915_private *dev_priv)
> +/*
> + * Initialise the GuC parameter block before starting the firmware
> + * transfer. These parameters are read by the firmware on startup
> + * and cannot be changed thereafter.
> + */
> +static void guc_params_init(struct drm_i915_private *dev_priv)
>   {
>   	struct intel_guc *guc = &dev_priv->guc;
>   	u32 params[GUC_CTL_MAX_DWORDS];
> @@ -392,11 +397,11 @@ static int guc_ucode_xfer(struct drm_i915_private *dev_priv)
>   		I915_WRITE(GEN7_MISCCPCTL, (GEN8_DOP_CLOCK_GATE_GUC_ENABLE |
>   					    I915_READ(GEN7_MISCCPCTL)));
>   
> -		/* allows for 5us before GT can go to RC6 */
> +		/* allows for 5us (in 10ns units) before GT can go to RC6 */
>   		I915_WRITE(GUC_ARAT_C6DIS, 0x1FF);
>   	}
>   
> -	set_guc_init_params(dev_priv);
> +	guc_params_init(dev_priv);
>   
>   	ret = guc_ucode_xfer_dma(dev_priv, vma);
>   
> @@ -411,7 +416,7 @@ static int guc_ucode_xfer(struct drm_i915_private *dev_priv)
>   	return ret;
>   }
>   
> -static int i915_reset_guc(struct drm_i915_private *dev_priv)
> +static int guc_hw_reset(struct drm_i915_private *dev_priv)
>   {
>   	int ret;
>   	u32 guc_status;
> @@ -478,7 +483,7 @@ int intel_guc_setup(struct drm_device *dev)
>   		goto fail;
>   	}
>   
> -	direct_interrupts_to_host(dev_priv);
> +	guc_interrupts_release(dev_priv);
>   
>   	guc_fw->guc_fw_load_status = GUC_FIRMWARE_PENDING;
>   
> @@ -501,7 +506,7 @@ int intel_guc_setup(struct drm_device *dev)
>   		 * Always reset the GuC just before (re)loading, so
>   		 * that the state and timing are fairly predictable
>   		 */
> -		err = i915_reset_guc(dev_priv);
> +		err = guc_hw_reset(dev_priv);
>   		if (err)
>   			goto fail;
>   
> @@ -526,7 +531,7 @@ int intel_guc_setup(struct drm_device *dev)
>   		err = i915_guc_submission_enable(dev_priv);
>   		if (err)
>   			goto fail;
> -		direct_interrupts_to_guc(dev_priv);
> +		guc_interrupts_capture(dev_priv);
>   	}
>   
>   	return 0;
> @@ -535,7 +540,7 @@ int intel_guc_setup(struct drm_device *dev)
>   	if (guc_fw->guc_fw_load_status == GUC_FIRMWARE_PENDING)
>   		guc_fw->guc_fw_load_status = GUC_FIRMWARE_FAIL;
>   
> -	direct_interrupts_to_host(dev_priv);
> +	guc_interrupts_release(dev_priv);
>   	i915_guc_submission_disable(dev_priv);
>   	i915_guc_submission_fini(dev_priv);
>   
> @@ -768,7 +773,7 @@ void intel_guc_fini(struct drm_device *dev)
>   	struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw;
>   
>   	mutex_lock(&dev->struct_mutex);
> -	direct_interrupts_to_host(dev_priv);
> +	guc_interrupts_release(dev_priv);
>   	i915_guc_submission_disable(dev_priv);
>   	i915_guc_submission_fini(dev_priv);
>   

I liked the direct interrupts naming more, but it is not that critical. 
The rest is OK.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Regards,

Tvrtko