From patchwork Thu Jul 30 23:02:09 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: 11693785 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 A1228722 for ; Thu, 30 Jul 2020 23:02:24 +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 89CC520829 for ; Thu, 30 Jul 2020 23:02:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 89CC520829 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 249C66E972; Thu, 30 Jul 2020 23:02:22 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4E8A96E977 for ; Thu, 30 Jul 2020 23:02:15 +0000 (UTC) IronPort-SDR: M7btTJ8uEyW4XTABnFjKY1+ecUbq0cUbyL21WBL+/+xHKUXFrCpRweBfrP2KLh2lgaIOLf3vkC 5w9qeof+MxWQ== X-IronPort-AV: E=McAfee;i="6000,8403,9698"; a="150902713" X-IronPort-AV: E=Sophos;i="5.75,415,1589266800"; d="scan'208";a="150902713" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jul 2020 16:02:13 -0700 IronPort-SDR: VZqH3mCBsymkwE8tpbh2v5IHGtTPkXnSE8ZcgxWt7nIWsbV203r8fGMmmIfhZIjyiNuAJWixVR xJiUHBu1IOxw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,415,1589266800"; d="scan'208";a="287009240" Received: from orsosgc001.ra.intel.com ([10.23.184.150]) by orsmga003.jf.intel.com with ESMTP; 30 Jul 2020 16:02:12 -0700 From: Umesh Nerlige Ramappa To: intel-gfx@lists.freedesktop.org Date: Thu, 30 Jul 2020 16:02:09 -0700 Message-Id: <20200730230212.55945-2-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200730230212.55945-1-umesh.nerlige.ramappa@intel.com> References: <20200730230212.55945-1-umesh.nerlige.ramappa@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/4] 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: , Cc: Chris Wilson 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) 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 | 13 +++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index c6f6370283cf..fe408c327d3c 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -2493,6 +2493,14 @@ 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_write(uncore, GEN12_SQCNT1, + intel_uncore_read(uncore, GEN12_SQCNT1) | + 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 @@ -2552,6 +2560,11 @@ 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_write(uncore, GEN12_SQCNT1, + intel_uncore_read(uncore, GEN12_SQCNT1) & + ~GEN12_SQCNT1_PMON_ENABLE); } 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 5eae593ee784..377339399458 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 (1 << 30) /* Gen12 OAR unit */ #define GEN12_OAR_OACONTROL _MMIO(0x2960)