From patchwork Mon Dec 2 11:08:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11269019 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25AF713B6 for ; Mon, 2 Dec 2019 11:08:47 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0D7302176D for ; Mon, 2 Dec 2019 11:08:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D7302176D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7A6A06E169; Mon, 2 Dec 2019 11:08:46 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1240589C88 for ; Mon, 2 Dec 2019 11:08:44 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 19425633-1500050 for multiple; Mon, 02 Dec 2019 11:08:39 +0000 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 2 Dec 2019 11:08:36 +0000 Message-Id: <20191202110836.2342685-2-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191202110836.2342685-1-chris@chris-wilson.co.uk> References: <20191202110836.2342685-1-chris@chris-wilson.co.uk> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/2] drm/i915/gt: Simplify rc6 w/a application X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Quite simply we only need to check for prior corruption on enabling rc6 on module load and resume, so by hooking into the common entry points. Signed-off-by: Chris Wilson Acked-by: Andi Shyti --- drivers/gpu/drm/i915/gt/intel_rc6.c | 59 +++-------------------- drivers/gpu/drm/i915/gt/intel_rc6.h | 2 - drivers/gpu/drm/i915/gt/intel_rc6_types.h | 1 - drivers/gpu/drm/i915/i915_drv.c | 2 - 4 files changed, 6 insertions(+), 58 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c index f58674f4aaec..4dc82196b285 100644 --- a/drivers/gpu/drm/i915/gt/intel_rc6.c +++ b/drivers/gpu/drm/i915/gt/intel_rc6.c @@ -488,63 +488,18 @@ static void rpm_put(struct intel_rc6 *rc6) rc6->wakeref = false; } -static bool intel_rc6_ctx_corrupted(struct intel_rc6 *rc6) -{ - return !intel_uncore_read(rc6_to_uncore(rc6), GEN8_RC6_CTX_INFO); -} - -static void intel_rc6_ctx_wa_init(struct intel_rc6 *rc6) -{ - struct drm_i915_private *i915 = rc6_to_i915(rc6); - - if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915)) - return; - - if (intel_rc6_ctx_corrupted(rc6)) { - DRM_INFO("RC6 context corrupted, disabling runtime power management\n"); - rc6->ctx_corrupted = true; - } -} - -/** - * intel_rc6_ctx_wa_resume - system resume sequence for the RC6 CTX WA - * @rc6: rc6 state - * - * Perform any steps needed to re-init the RC6 CTX WA after system resume. - */ -void intel_rc6_ctx_wa_resume(struct intel_rc6 *rc6) -{ - if (rc6->ctx_corrupted && !intel_rc6_ctx_corrupted(rc6)) { - DRM_INFO("RC6 context restored, re-enabling runtime power management\n"); - rc6->ctx_corrupted = false; - } -} - -/** - * intel_rc6_ctx_wa_check - check for a new RC6 CTX corruption - * @rc6: rc6 state - * - * Check if an RC6 CTX corruption has happened since the last check and if so - * disable RC6 and runtime power management. -*/ -static bool intel_rc6_ctx_wa_check(struct intel_rc6 *rc6) +static bool pctx_corrupted(struct intel_rc6 *rc6) { struct drm_i915_private *i915 = rc6_to_i915(rc6); if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915)) return false; - if (rc6->ctx_corrupted) - return false; - - if (!intel_rc6_ctx_corrupted(rc6)) + if (intel_uncore_read(rc6_to_uncore(rc6), GEN8_RC6_CTX_INFO)) return false; dev_notice(i915->drm.dev, "RC6 context corruption, disabling runtime power management\n"); - - rc6->ctx_corrupted = true; - return true; } @@ -572,8 +527,6 @@ void intel_rc6_init(struct intel_rc6 *rc6) if (!rc6_supported(rc6)) return; - intel_rc6_ctx_wa_init(rc6); - if (IS_CHERRYVIEW(i915)) err = chv_rc6_init(rc6); else if (IS_VALLEYVIEW(i915)) @@ -608,9 +561,6 @@ void intel_rc6_enable(struct intel_rc6 *rc6) GEM_BUG_ON(rc6->enabled); - if (rc6->ctx_corrupted) - return; - intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); if (IS_CHERRYVIEW(i915)) @@ -631,6 +581,9 @@ void intel_rc6_enable(struct intel_rc6 *rc6) intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); + if (unlikely(pctx_corrupted(rc6))) + return; + /* rc6 is ready, runtime-pm is go! */ rpm_put(rc6); rc6->enabled = true; @@ -654,7 +607,7 @@ void intel_rc6_park(struct intel_rc6 *rc6) if (!rc6->enabled) return; - if (unlikely(intel_rc6_ctx_wa_check(rc6))) { + if (unlikely(pctx_corrupted(rc6))) { intel_rc6_disable(rc6); return; } diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.h b/drivers/gpu/drm/i915/gt/intel_rc6.h index f2821576bfd3..9f0f23fca8af 100644 --- a/drivers/gpu/drm/i915/gt/intel_rc6.h +++ b/drivers/gpu/drm/i915/gt/intel_rc6.h @@ -25,6 +25,4 @@ void intel_rc6_disable(struct intel_rc6 *rc6); u64 intel_rc6_residency_ns(struct intel_rc6 *rc6, i915_reg_t reg); u64 intel_rc6_residency_us(struct intel_rc6 *rc6, i915_reg_t reg); -void intel_rc6_ctx_wa_resume(struct intel_rc6 *rc6); - #endif /* INTEL_RC6_H */ diff --git a/drivers/gpu/drm/i915/gt/intel_rc6_types.h b/drivers/gpu/drm/i915/gt/intel_rc6_types.h index 9f3d56817c97..60decae1abc9 100644 --- a/drivers/gpu/drm/i915/gt/intel_rc6_types.h +++ b/drivers/gpu/drm/i915/gt/intel_rc6_types.h @@ -25,7 +25,6 @@ struct intel_rc6 { bool supported : 1; bool enabled : 1; bool wakeref : 1; - bool ctx_corrupted : 1; }; #endif /* INTEL_RC6_TYPES_H */ diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index f509d826fcc7..34344b632e1f 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1817,8 +1817,6 @@ static int i915_drm_resume(struct drm_device *dev) disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); - intel_rc6_ctx_wa_resume(&dev_priv->gt.rc6); - intel_gt_sanitize(&dev_priv->gt, true); ret = i915_ggtt_enable_hw(dev_priv);