From patchwork Fri Oct 2 23:27:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Umesh Nerlige Ramappa X-Patchwork-Id: 11814719 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 36C86139A for ; Fri, 2 Oct 2020 23:28:10 +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 0E8742072E for ; Fri, 2 Oct 2020 23:28:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0E8742072E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com 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 E08D86E9EF; Fri, 2 Oct 2020 23:28:03 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id AC34D6E9E9 for ; Fri, 2 Oct 2020 23:28:02 +0000 (UTC) IronPort-SDR: Faf0YYTGmCOFEcGWv8PD6DxKl/4bKOWfH0LUiXoqXWYZvUkCgUT4xbmBcmZm4GWo2Ntt6D0bD5 4sj9zXpUzcoQ== X-IronPort-AV: E=McAfee;i="6000,8403,9762"; a="163969279" X-IronPort-AV: E=Sophos;i="5.77,329,1596524400"; d="scan'208";a="163969279" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Oct 2020 16:28:01 -0700 IronPort-SDR: jSlRttEKnAtjnDSMFUw7lBgweoiioUfrbpy6qped5DA/cDWWrjO13YcIypvqOMHZr4DJsjTcRM /KIM8DovAIXg== X-IronPort-AV: E=Sophos;i="5.77,329,1596524400"; d="scan'208";a="325972363" Received: from orsosgc001.ra.intel.com ([10.23.184.150]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Oct 2020 16:28:01 -0700 From: Umesh Nerlige Ramappa To: intel-gfx@lists.freedesktop.org, Chris Wilson , Lionel G Landwerlin Date: Fri, 2 Oct 2020 16:27:56 -0700 Message-Id: <20201002232801.51936-2-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201002232801.51936-1-umesh.nerlige.ramappa@intel.com> References: <20201002232801.51936-1-umesh.nerlige.ramappa@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/6] drm/i915/perf: Ensure observation logic is not clock gated X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 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" From: Piotr Maciejewski A clock gating switch can control if the performance monitoring and observation logic is enaled or not. Ensure that we enable the clocks. v2: Separate code from other patches (Lionel) v3: Reset PMON enable when disabling perf to save power (Lionel) v4: Use intel_uncore_rmw and REG_BIT (Chris) Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL") Signed-off-by: Piotr Maciejewski Signed-off-by: Umesh Nerlige Ramappa Reviewed-by: Lionel Landwerlin --- drivers/gpu/drm/i915/i915_perf.c | 9 +++++++++ drivers/gpu/drm/i915/i915_reg.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index e94976976571..df5166d89d82 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -2520,6 +2520,12 @@ gen12_enable_metric_set(struct i915_perf_stream *stream, (period_exponent << GEN12_OAG_OAGLBCTXCTRL_TIMER_PERIOD_SHIFT)) : 0); + /* + * Initialize Super Queue Internal Cnt Register + * Set PMON Enable in order to collect valid metrics. + */ + intel_uncore_rmw(uncore, GEN12_SQCNT1, 0, GEN12_SQCNT1_PMON_ENABLE); + /* * Update all contexts prior writing the mux configurations as we need * to make sure all slices/subslices are ON before writing to NOA @@ -2579,6 +2585,9 @@ static void gen12_disable_metric_set(struct i915_perf_stream *stream) /* Make sure we disable noa to save power. */ intel_uncore_rmw(uncore, RPM_CONFIG1, GEN10_GT_NOA_ENABLE, 0); + + /* Reset PMON Enable to save power. */ + intel_uncore_rmw(uncore, GEN12_SQCNT1, GEN12_SQCNT1_PMON_ENABLE, 0); } static void gen7_oa_enable(struct i915_perf_stream *stream) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 88c215cf97d4..031bff4dc2b1 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -696,6 +696,8 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define OABUFFER_SIZE_16M (7 << 3) #define GEN12_OA_TLB_INV_CR _MMIO(0xceec) +#define GEN12_SQCNT1 _MMIO(0x8718) +#define GEN12_SQCNT1_PMON_ENABLE REG_BIT(30) /* Gen12 OAR unit */ #define GEN12_OAR_OACONTROL _MMIO(0x2960)