From patchwork Wed Jul 21 16:11:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinay Belgaumkar X-Patchwork-Id: 12391481 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53A67C12002 for ; Wed, 21 Jul 2021 16:12:34 +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 24C1F6100C for ; Wed, 21 Jul 2021 16:12:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 24C1F6100C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7E7956EBB7; Wed, 21 Jul 2021 16:12:33 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8D6676EBA2; Wed, 21 Jul 2021 16:12:30 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10052"; a="297028277" X-IronPort-AV: E=Sophos;i="5.84,258,1620716400"; d="scan'208";a="297028277" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2021 09:12:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,258,1620716400"; d="scan'208";a="564787023" Received: from vbelgaum-ubuntu.fm.intel.com ([10.1.27.27]) by orsmga004.jf.intel.com with ESMTP; 21 Jul 2021 09:12:30 -0700 From: Vinay Belgaumkar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 07/14] drm/i915/guc/slpc: Add methods to set min/max frequency Date: Wed, 21 Jul 2021 09:11:13 -0700 Message-Id: <20210721161120.24610-8-vinay.belgaumkar@intel.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20210721161120.24610-1-vinay.belgaumkar@intel.com> References: <20210721161120.24610-1-vinay.belgaumkar@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: Vinay Belgaumkar , Sundaresan Sujaritha Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add param set h2g helpers to set the min and max frequencies for use by SLPC. v2: Address review comments (Michal W) Signed-off-by: Sundaresan Sujaritha Signed-off-by: Vinay Belgaumkar --- drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 84 +++++++++++++++++++++ drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h | 2 + 2 files changed, 86 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c index 48db2a8f67d1..b40c39ba4049 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c @@ -109,6 +109,18 @@ static u32 slpc_get_state(struct intel_guc_slpc *slpc) return data->header.global_state; } +static int guc_action_slpc_set_param(struct intel_guc *guc, u8 id, u32 value) +{ + u32 request[] = { + INTEL_GUC_ACTION_SLPC_REQUEST, + SLPC_EVENT(SLPC_EVENT_PARAMETER_SET, 2), + id, + value, + }; + + return intel_guc_send(guc, request, ARRAY_SIZE(request)); +} + static bool slpc_is_running(struct intel_guc_slpc *slpc) { return (slpc_get_state(slpc) == SLPC_GLOBAL_STATE_RUNNING); @@ -143,6 +155,15 @@ static int slpc_query_task_state(struct intel_guc_slpc *slpc) return ret; } +static int slpc_set_param(struct intel_guc_slpc *slpc, u8 id, u32 value) +{ + struct intel_guc *guc = slpc_to_guc(slpc); + + GEM_BUG_ON(id >= SLPC_MAX_PARAM); + + return guc_action_slpc_set_param(guc, id, value); +} + static const char *slpc_state_string(struct intel_guc_slpc *slpc) { const char *str = NULL; @@ -238,6 +259,69 @@ u32 slpc_decode_max_freq(struct intel_guc_slpc *slpc) GT_FREQUENCY_MULTIPLIER, GEN9_FREQ_SCALER); } +/** + * intel_guc_slpc_set_max_freq() - Set max frequency limit for SLPC. + * @slpc: pointer to intel_guc_slpc. + * @val: frequency (MHz) + * + * This function will invoke GuC SLPC action to update the max frequency + * limit for unslice. + * + * Return: 0 on success, non-zero error code on failure. + */ +int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val) +{ + int ret; + struct drm_i915_private *i915 = slpc_to_i915(slpc); + intel_wakeref_t wakeref; + + with_intel_runtime_pm(&i915->runtime_pm, wakeref) { + ret = slpc_set_param(slpc, + SLPC_PARAM_GLOBAL_MAX_GT_UNSLICE_FREQ_MHZ, + val); + if (ret) { + drm_err(&i915->drm, + "Set max frequency unslice returned (%pe)\n", ERR_PTR(ret)); + /* Return standardized err code for sysfs */ + ret = -EIO; + } + } + + return ret; +} + +/** + * intel_guc_slpc_set_min_freq() - Set min frequency limit for SLPC. + * @slpc: pointer to intel_guc_slpc. + * @val: frequency (MHz) + * + * This function will invoke GuC SLPC action to update the min unslice + * frequency. + * + * Return: 0 on success, non-zero error code on failure. + */ +int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val) +{ + int ret; + struct intel_guc *guc = slpc_to_guc(slpc); + struct drm_i915_private *i915 = guc_to_gt(guc)->i915; + intel_wakeref_t wakeref; + + with_intel_runtime_pm(&i915->runtime_pm, wakeref) { + ret = slpc_set_param(slpc, + SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ, + val); + if (ret) { + drm_err(&i915->drm, + "Set min frequency for unslice returned (%pe)\n", ERR_PTR(ret)); + /* Return standardized err code for sysfs */ + ret = -EIO; + } + } + + return ret; +} + /* * intel_guc_slpc_enable() - Start SLPC * @slpc: pointer to intel_guc_slpc. diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h index f02249ff5f1b..3a1a7eaafc12 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h @@ -30,5 +30,7 @@ void intel_guc_slpc_init_early(struct intel_guc_slpc *slpc); int intel_guc_slpc_init(struct intel_guc_slpc *slpc); int intel_guc_slpc_enable(struct intel_guc_slpc *slpc); void intel_guc_slpc_fini(struct intel_guc_slpc *slpc); +int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val); +int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val); #endif