From patchwork Wed Jan 25 08:26:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Previn X-Patchwork-Id: 13115117 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DA95CC54E94 for ; Wed, 25 Jan 2023 08:27:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AC53510E73A; Wed, 25 Jan 2023 08:26:47 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id EF2FA897FD; Wed, 25 Jan 2023 08:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674635205; x=1706171205; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hIhpJ8wB01aRUwdbNx7VohfjOmCO0vJbtWemK7jr8gA=; b=avvD578GHCMVAhrOrvsebAvJcRBFAdkmlvTb2TOhU0ZnJ/TFDHEZE+hi cHTnQHhnPWyoSzvxtqkSi+zxVqy0ah51qy4NqHTh5pqJf5Ad6NSiG4Xs7 mcYyA0KC9ZInob1vssdGz1EjHeHU/gTMyh1v0o3Kppw3aw/KFT7GcP9HI 3CGzy1SuZACf8rVPQfnCPyhBUkx1/B83Swhq5B6yUMA6r4yLS8LE6PUI8 1pz+MSYYWJ0uYJxCI+96BWZYAgvZUhktMMa/6nZcbRreAQaoQfwkinJZi 336dQCb1ZNVm4V7/Zmg49k9vCDB7vnZNZN2059QH2XQ50QjAaDwFuxJHS Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="325180422" X-IronPort-AV: E=Sophos;i="5.97,244,1669104000"; d="scan'208";a="325180422" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2023 00:26:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="662426130" X-IronPort-AV: E=Sophos;i="5.97,244,1669104000"; d="scan'208";a="662426130" Received: from aalteres-desk.fm.intel.com ([10.80.57.53]) by orsmga002.jf.intel.com with ESMTP; 25 Jan 2023 00:26:39 -0800 From: Alan Previn To: intel-gfx@lists.freedesktop.org Subject: [PATCH v7 6/6] drm/i915/pxp: Pxp hw init should be in resume_complete Date: Wed, 25 Jan 2023 00:26:37 -0800 Message-Id: <20230125082637.118970-7-alan.previn.teres.alexis@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230125082637.118970-1-alan.previn.teres.alexis@intel.com> References: <20230125082637.118970-1-alan.previn.teres.alexis@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alan Previn , Vivi@freedesktop.org, Greg Kroah-Hartman , Rodrigo , Alexander Usyskin , dri-devel@lists.freedesktop.org, Daniele Ceraolo Spurio , Juston Li , Tomas Winkler Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" During suspend flow, i915 currently achors' on the pm_suspend_prepare callback as the location where we quiesce the entire GPU and perform all necessary cleanup in order to go into suspend. PXP is also called during this time to perform the arbitration session teardown (with the assurance no additional GEM IOCTLs will come after that could restart the session). However, if other devices or drivers fail their suspend_prepare, the system will not go into suspend and i915 will be expected to resume operation. In this case, we need to re-initialize the PXP hardware and this really should be done within the pm_resume_complete callback which is the correct opposing function in the resume sequence to match pm_suspend_prepare of the suspend sequence. Because this callback is the last thing at the end of resuming we expect little to no impact to the rest of the i915 resume sequence with this change. Signed-off-by: Alan Previn Reviewed-by: Daniele Ceraolo Spurio Acked-by: Rodrigo Vivi --- drivers/gpu/drm/i915/i915_driver.c | 20 ++++++++++++++++++-- drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp_pm.h | 6 +++--- 3 files changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c index 6469c7c1e154..122736b48938 100644 --- a/drivers/gpu/drm/i915/i915_driver.c +++ b/drivers/gpu/drm/i915/i915_driver.c @@ -1167,6 +1167,13 @@ static bool suspend_to_idle(struct drm_i915_private *dev_priv) return false; } +static void i915_drm_complete(struct drm_device *dev) +{ + struct drm_i915_private *i915 = to_i915(dev); + + intel_pxp_resume_complete(i915->pxp); +} + static int i915_drm_prepare(struct drm_device *dev) { struct drm_i915_private *i915 = to_i915(dev); @@ -1367,8 +1374,6 @@ static int i915_drm_resume(struct drm_device *dev) i915_gem_resume(dev_priv); - intel_pxp_resume(dev_priv->pxp); - intel_modeset_init_hw(dev_priv); intel_init_clock_gating(dev_priv); intel_hpd_init(dev_priv); @@ -1560,6 +1565,16 @@ static int i915_pm_resume(struct device *kdev) return i915_drm_resume(&i915->drm); } +static void i915_pm_complete(struct device *kdev) +{ + struct drm_i915_private *i915 = kdev_to_i915(kdev); + + if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) + return; + + i915_drm_complete(&i915->drm); +} + /* freeze: before creating the hibernation_image */ static int i915_pm_freeze(struct device *kdev) { @@ -1780,6 +1795,7 @@ const struct dev_pm_ops i915_pm_ops = { .suspend_late = i915_pm_suspend_late, .resume_early = i915_pm_resume_early, .resume = i915_pm_resume, + .complete = i915_pm_complete, /* * S4 event handlers diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c index e427464aa131..4f836b317424 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c @@ -34,7 +34,7 @@ void intel_pxp_suspend(struct intel_pxp *pxp) } } -void intel_pxp_resume(struct intel_pxp *pxp) +void intel_pxp_resume_complete(struct intel_pxp *pxp) { if (!intel_pxp_is_enabled(pxp)) return; diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h index 586be769104f..06b46f535b42 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h @@ -11,7 +11,7 @@ struct intel_pxp; #ifdef CONFIG_DRM_I915_PXP void intel_pxp_suspend_prepare(struct intel_pxp *pxp); void intel_pxp_suspend(struct intel_pxp *pxp); -void intel_pxp_resume(struct intel_pxp *pxp); +void intel_pxp_resume_complete(struct intel_pxp *pxp); void intel_pxp_runtime_suspend(struct intel_pxp *pxp); #else static inline void intel_pxp_suspend_prepare(struct intel_pxp *pxp) @@ -22,7 +22,7 @@ static inline void intel_pxp_suspend(struct intel_pxp *pxp) { } -static inline void intel_pxp_resume(struct intel_pxp *pxp) +static inline void intel_pxp_resume_complete(struct intel_pxp *pxp) { } @@ -32,6 +32,6 @@ static inline void intel_pxp_runtime_suspend(struct intel_pxp *pxp) #endif static inline void intel_pxp_runtime_resume(struct intel_pxp *pxp) { - intel_pxp_resume(pxp); + intel_pxp_resume_complete(pxp); } #endif /* __INTEL_PXP_PM_H__ */