From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 1/2] drm/i915: Move MMCD_MISC_CTRL from context w/a to standard
Date: Wed, 04 Oct 2017 15:55:27 +0300 [thread overview]
Message-ID: <87fuaz2hts.fsf@gaia.fi.intel.com> (raw)
In-Reply-To: <20171004124153.14142-1-chris@chris-wilson.co.uk>
Chris Wilson <chris@chris-wilson.co.uk> writes:
> Looking at gem_workarounds shows us that MMCD_MISC_CTRL is not restored
> following a suspend-resume cycle. This implies that MMCD_MISC_CTRL is
> not stored in the context, but is an ordinary register w/a that we need to
> restore during init_hw.
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> Cc: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> ---
> drivers/gpu/drm/i915/intel_engine_cs.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
> index a28e2a864cf1..06044f1f48c8 100644
> --- a/drivers/gpu/drm/i915/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/intel_engine_cs.c
> @@ -980,7 +980,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
> GEN9_PBE_COMPRESSED_HASH_SELECTION);
> WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
> GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR);
> - WA_SET_BIT(MMCD_MISC_CTRL, MMCD_PCLA | MMCD_HOTSPOT_EN);
> +
> + I915_WRITE(MMCD_MISC_CTRL,
> + I915_READ(MMCD_MISC_CTRL) |
> + MMCD_PCLA |
> + MMCD_HOTSPOT_EN);
> }
>
> /* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk,cfl */
> --
> 2.14.2
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next prev parent reply other threads:[~2017-10-04 12:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-04 12:41 [PATCH 1/2] drm/i915: Move MMCD_MISC_CTRL from context w/a to standard Chris Wilson
2017-10-04 12:41 ` [PATCH 2/2] drm/i915: Remove WA_(SET|CLR)_BIT Chris Wilson
2017-10-04 12:57 ` Mika Kuoppala
2017-10-04 12:55 ` Mika Kuoppala [this message]
2017-10-04 15:33 ` [PATCH 1/2] drm/i915: Move MMCD_MISC_CTRL from context w/a to standard Oscar Mateo
2017-10-04 13:06 ` ✓ Fi.CI.BAT: success for series starting with [1/2] " Patchwork
2017-10-04 14:16 ` ✓ Fi.CI.IGT: " Patchwork
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