From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nVtBXG+c" Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BD8510D8 for ; Fri, 8 Dec 2023 03:28:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1702034909; x=1733570909; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version:content-transfer-encoding; bh=qggrYi1PwK2HVbyQ3mLwNOjXHc5hsPBg+52S+9IUREo=; b=nVtBXG+cX4DFaMMdFz2WjztC3+W+A80ZpThsx4I2UnBTi+YEaBATRYwJ xAeYrfnQ5J4wHr5dWDvmZAmDwE9/XRMWFu7EK6ZSmYe41gwO+C3LtfxGP aCm4n6hj+IVKxeudn8CPhUB+NmJIjpxCT4wW/Zzx4LrWYv+qKo7m16VNz ZCR+nArMIvG1Kk5jIScAgPFcsbrzSqOhM4n98ELkM8YYZN4tZLIXtJAOH y2NFKxi0mt2ZbxXWIZ09zobBZoOSp/3UHfGaqxbwNbv4WMFbFLba6QUj3 yx1RFvPMRue1Ru2blk112A4aZoAJCJ7JuwIM4fXWH9i6XwC82rvImMAYG w==; X-IronPort-AV: E=McAfee;i="6600,9927,10917"; a="384797253" X-IronPort-AV: E=Sophos;i="6.04,260,1695711600"; d="scan'208";a="384797253" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2023 03:28:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10917"; a="895509798" X-IronPort-AV: E=Sophos;i="6.04,260,1695711600"; d="scan'208";a="895509798" Received: from mvafin-mobl2.ger.corp.intel.com (HELO localhost) ([10.252.63.236]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2023 03:28:27 -0800 From: Jani Nikula To: intel-gfx@lists.freedesktop.org Cc: Ville =?utf-8?B?U3lyasOkbMOk?= , Matt Roper , Lucas De Marchi , stable@vger.kernel.org Subject: Re: [PATCH] drm/i915: fix display ver 12-13 fault error handling In-Reply-To: <20231208112008.2904497-1-jani.nikula@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20231208112008.2904497-1-jani.nikula@intel.com> Date: Fri, 08 Dec 2023 13:28:24 +0200 Message-ID: <87jzppyluv.fsf@intel.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Fri, 08 Dec 2023, Jani Nikula wrote: > Unless I'm completely misreading the bspec, there are no defined bits > for plane gtt fault errors in DE PIPE IIR for a display versions > 12-14. This would explain why DG2 in the linked bug is getting thousands > of fault errors. > > Bspec: 50335 > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9769 Okay, looking at the bug, this seems optimistic, but it might clear the ratelimited fault errors. > Fixes: 99e2d8bcb887 ("drm/i915/rkl: Limit number of universal planes to 5= ") > Cc: Ville Syrj=C3=A4l=C3=A4 > Cc: Matt Roper > Cc: Lucas De Marchi > Cc: # v5.9+ > Signed-off-by: Jani Nikula > --- > drivers/gpu/drm/i915/display/intel_display_irq.c | 4 +++- > drivers/gpu/drm/i915/i915_reg.h | 3 ++- > 2 files changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/g= pu/drm/i915/display/intel_display_irq.c > index f8ed53f30b2e..7bede5b56286 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_irq.c > +++ b/drivers/gpu/drm/i915/display/intel_display_irq.c > @@ -834,7 +834,9 @@ static u32 gen8_de_port_aux_mask(struct drm_i915_priv= ate *dev_priv) >=20=20 > static u32 gen8_de_pipe_fault_mask(struct drm_i915_private *dev_priv) > { > - if (DISPLAY_VER(dev_priv) >=3D 13 || HAS_D12_PLANE_MINIMIZATION(dev_pri= v)) > + if (DISPLAY_VER(dev_priv) >=3D 14) > + return MTL_DE_PIPE_IRQ_FAULT_ERRORS; > + else if (DISPLAY_VER(dev_priv) >=3D 12) > return RKL_DE_PIPE_IRQ_FAULT_ERRORS; > else if (DISPLAY_VER(dev_priv) >=3D 11) > return GEN11_DE_PIPE_IRQ_FAULT_ERRORS; > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_= reg.h > index 27dc903f0553..fcf980694cb4 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -4354,7 +4354,8 @@ > GEN11_PIPE_PLANE7_FAULT | \ > GEN11_PIPE_PLANE6_FAULT | \ > GEN11_PIPE_PLANE5_FAULT) > -#define RKL_DE_PIPE_IRQ_FAULT_ERRORS \ > +#define RKL_DE_PIPE_IRQ_FAULT_ERRORS 0 > +#define MTL_DE_PIPE_IRQ_FAULT_ERRORS \ > (GEN9_DE_PIPE_IRQ_FAULT_ERRORS | \ > GEN11_PIPE_PLANE5_FAULT) --=20 Jani Nikula, Intel