Re: [RFC 01/14] drm/i915: Make i915_check_and_clear_faults take uncore

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Quoting Tvrtko Ursulin (2019-06-10 16:54:06)
> From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
> 
> Continuing the conversion and elimination of implicit dev_priv.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
> Suggested-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gt/intel_engine_cs.c |  2 +-
>  drivers/gpu/drm/i915/gt/intel_reset.c     | 28 ++++++++++++-----------
>  drivers/gpu/drm/i915/gt/intel_reset.h     |  2 +-
>  drivers/gpu/drm/i915/i915_drv.c           |  2 +-
>  drivers/gpu/drm/i915/i915_gem_gtt.c       |  4 ++--
>  5 files changed, 20 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index c0d986db5a75..a046e8dccc96 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -453,7 +453,7 @@ int intel_engines_init_mmio(struct drm_i915_private *i915)
>  
>         RUNTIME_INFO(i915)->num_engines = hweight32(mask);
>  
> -       i915_check_and_clear_faults(i915);
> +       i915_check_and_clear_faults(&i915->uncore);

This name is still setting off red flags for me, but I have to confess
that staring at it, passing uncore does make sense.

I just wish we have per-engines faults everywhere and this could be
reduced to passing engine.

Hmm, this I guess we will just have to revisit in the near future as we
may get the opportunity to put these regs under more scrutiny.

>  
>         intel_setup_engine_capabilities(i915);
>  
> diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
> index 60d24110af80..13471916559b 100644
> --- a/drivers/gpu/drm/i915/gt/intel_reset.c
> +++ b/drivers/gpu/drm/i915/gt/intel_reset.c
> @@ -1166,10 +1166,10 @@ static void gen8_clear_engine_error_register(struct intel_engine_cs *engine)
>         GEN6_RING_FAULT_REG_POSTING_READ(engine);
>  }
>  
> -static void clear_error_registers(struct drm_i915_private *i915,
> +static void clear_error_registers(struct intel_uncore *uncore,
>                                   intel_engine_mask_t engine_mask)
>  {
> -       struct intel_uncore *uncore = &i915->uncore;
> +       struct drm_i915_private *i915 = uncore_to_i915(uncore);

Grr, I should have objected to uncore_to_i915() loudly from the
beginning

What's done is done,
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris
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