From patchwork Wed Jul 28 21:11:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinay Belgaumkar X-Patchwork-Id: 12406763 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,URIBL_BLOCKED,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 833BBC4320A for ; Wed, 28 Jul 2021 21:12:45 +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 589CD6101B for ; Wed, 28 Jul 2021 21:12:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 589CD6101B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4E58E6E9FA; Wed, 28 Jul 2021 21:12:44 +0000 (UTC) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 200876E9A3; Wed, 28 Jul 2021 21:12:38 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10059"; a="199968617" X-IronPort-AV: E=Sophos;i="5.84,276,1620716400"; d="scan'208";a="199968617" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jul 2021 14:12:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,276,1620716400"; d="scan'208";a="580995587" Received: from vbelgaum-ubuntu.fm.intel.com ([10.1.27.27]) by fmsmga001.fm.intel.com with ESMTP; 28 Jul 2021 14:12:32 -0700 From: Vinay Belgaumkar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 12/14] drm/i915/guc/slpc: Sysfs hooks for SLPC Date: Wed, 28 Jul 2021 14:11:42 -0700 Message-Id: <20210728211144.15322-13-vinay.belgaumkar@intel.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20210728211144.15322-1-vinay.belgaumkar@intel.com> References: <20210728211144.15322-1-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 , Tvrtko Ursulin , Sujaritha Sundaresan , Michal Wajdeczko Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Update the get/set min/max freq hooks to work for SLPC case as well. Consolidate helpers for requested/min/max frequency get/set to intel_rps where the proper action can be taken depending on whether SLPC is enabled. v2: Add wrappers for getting rp0/1/n frequencies, update softlimits in set min/max SLPC functions. Also check for boundary conditions before setting them. v3: Address review comments (Michal W) v4: Add helper for host part of intel_rps_set_freq helpers (Michal W) Acked-by: Michal Wajdeczko Signed-off-by: Vinay Belgaumkar Signed-off-by: Tvrtko Ursulin Signed-off-by: Sujaritha Sundaresan Reviewed-by: Michal Wajdeczko --- drivers/gpu/drm/i915/gt/intel_rps.c | 177 ++++++++++++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_rps.h | 10 ++ drivers/gpu/drm/i915/i915_pmu.c | 2 +- drivers/gpu/drm/i915/i915_reg.h | 2 + drivers/gpu/drm/i915/i915_sysfs.c | 83 +++---------- 5 files changed, 207 insertions(+), 67 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c index e858eeb2c59d..49db8ed9f80d 100644 --- a/drivers/gpu/drm/i915/gt/intel_rps.c +++ b/drivers/gpu/drm/i915/gt/intel_rps.c @@ -37,6 +37,13 @@ static struct intel_uncore *rps_to_uncore(struct intel_rps *rps) return rps_to_gt(rps)->uncore; } +static struct intel_guc_slpc *rps_to_slpc(struct intel_rps *rps) +{ + struct intel_gt *gt = rps_to_gt(rps); + + return >->uc.guc.slpc; +} + static bool rps_uses_slpc(struct intel_rps *rps) { struct intel_gt *gt = rps_to_gt(rps); @@ -1960,6 +1967,176 @@ u32 intel_rps_read_actual_frequency(struct intel_rps *rps) return freq; } +u32 intel_rps_read_punit_req(struct intel_rps *rps) +{ + struct intel_uncore *uncore = rps_to_uncore(rps); + + return intel_uncore_read(uncore, GEN6_RPNSWREQ); +} + +static u32 intel_rps_get_req(u32 pureq) +{ + u32 req = pureq >> GEN9_SW_REQ_UNSLICE_RATIO_SHIFT; + + return req; +} + +u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps) +{ + u32 freq = intel_rps_get_req(intel_rps_read_punit_req(rps)); + + return intel_gpu_freq(rps, freq); +} + +u32 intel_rps_get_requested_frequency(struct intel_rps *rps) +{ + if (rps_uses_slpc(rps)) + return intel_rps_read_punit_req_frequency(rps); + else + return intel_gpu_freq(rps, rps->cur_freq); +} + +u32 intel_rps_get_max_frequency(struct intel_rps *rps) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return slpc->max_freq_softlimit; + else + return intel_gpu_freq(rps, rps->max_freq_softlimit); +} + +u32 intel_rps_get_rp0_frequency(struct intel_rps *rps) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return slpc->rp0_freq; + else + return intel_gpu_freq(rps, rps->rp0_freq); +} + +u32 intel_rps_get_rp1_frequency(struct intel_rps *rps) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return slpc->rp1_freq; + else + return intel_gpu_freq(rps, rps->rp1_freq); +} + +u32 intel_rps_get_rpn_frequency(struct intel_rps *rps) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return slpc->min_freq; + else + return intel_gpu_freq(rps, rps->min_freq); +} + +static int set_max_freq(struct intel_rps *rps, u32 val) +{ + struct drm_i915_private *i915 = rps_to_i915(rps); + int ret = 0; + + mutex_lock(&rps->lock); + + val = intel_freq_opcode(rps, val); + if (val < rps->min_freq || + val > rps->max_freq || + val < rps->min_freq_softlimit) { + ret = -EINVAL; + goto unlock; + } + + if (val > rps->rp0_freq) + drm_dbg(&i915->drm, "User requested overclocking to %d\n", + intel_gpu_freq(rps, val)); + + rps->max_freq_softlimit = val; + + val = clamp_t(int, rps->cur_freq, + rps->min_freq_softlimit, + rps->max_freq_softlimit); + + /* + * We still need *_set_rps to process the new max_delay and + * update the interrupt limits and PMINTRMSK even though + * frequency request may be unchanged. + */ + intel_rps_set(rps, val); + +unlock: + mutex_unlock(&rps->lock); + + return ret; +} + +int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return intel_guc_slpc_set_max_freq(slpc, val); + else + return set_max_freq(rps, val); +} + +u32 intel_rps_get_min_frequency(struct intel_rps *rps) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return slpc->min_freq_softlimit; + else + return intel_gpu_freq(rps, rps->min_freq_softlimit); +} + +static int set_min_freq(struct intel_rps *rps, u32 val) +{ + int ret = 0; + + mutex_lock(&rps->lock); + + val = intel_freq_opcode(rps, val); + if (val < rps->min_freq || + val > rps->max_freq || + val > rps->max_freq_softlimit) { + ret = -EINVAL; + goto unlock; + } + + rps->min_freq_softlimit = val; + + val = clamp_t(int, rps->cur_freq, + rps->min_freq_softlimit, + rps->max_freq_softlimit); + + /* + * We still need *_set_rps to process the new min_delay and + * update the interrupt limits and PMINTRMSK even though + * frequency request may be unchanged. + */ + intel_rps_set(rps, val); + +unlock: + mutex_unlock(&rps->lock); + + return ret; +} + +int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val) +{ + struct intel_guc_slpc *slpc = rps_to_slpc(rps); + + if (rps_uses_slpc(rps)) + return intel_guc_slpc_set_min_freq(slpc, val); + else + return set_min_freq(rps, val); +} + /* External interface for intel_ips.ko */ static struct drm_i915_private __rcu *ips_mchdev; diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h index 1d2cfc98b510..4213bcce1667 100644 --- a/drivers/gpu/drm/i915/gt/intel_rps.h +++ b/drivers/gpu/drm/i915/gt/intel_rps.h @@ -31,6 +31,16 @@ int intel_gpu_freq(struct intel_rps *rps, int val); int intel_freq_opcode(struct intel_rps *rps, int val); u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat1); u32 intel_rps_read_actual_frequency(struct intel_rps *rps); +u32 intel_rps_get_requested_frequency(struct intel_rps *rps); +u32 intel_rps_get_min_frequency(struct intel_rps *rps); +int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val); +u32 intel_rps_get_max_frequency(struct intel_rps *rps); +int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val); +u32 intel_rps_get_rp0_frequency(struct intel_rps *rps); +u32 intel_rps_get_rp1_frequency(struct intel_rps *rps); +u32 intel_rps_get_rpn_frequency(struct intel_rps *rps); +u32 intel_rps_read_punit_req(struct intel_rps *rps); +u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps); void gen5_rps_irq_handler(struct intel_rps *rps); void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir); diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index eca92076f31d..0b488d49694c 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -407,7 +407,7 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns) if (pmu->enable & config_mask(I915_PMU_REQUESTED_FREQUENCY)) { add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_REQ], - intel_gpu_freq(rps, rps->cur_freq), + intel_rps_get_requested_frequency(rps), period_ns / 1000); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index f3a445f79a36..b4527ca027e3 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -9229,6 +9229,8 @@ enum { #define GEN9_FREQUENCY(x) ((x) << 23) #define GEN6_OFFSET(x) ((x) << 19) #define GEN6_AGGRESSIVE_TURBO (0 << 15) +#define GEN9_SW_REQ_UNSLICE_RATIO_SHIFT 23 + #define GEN6_RC_VIDEO_FREQ _MMIO(0xA00C) #define GEN6_RC_CONTROL _MMIO(0xA090) #define GEN6_RC_CTL_RC6pp_ENABLE (1 << 16) diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 873bf996ceb5..cdf0e9c6fd73 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -272,7 +272,7 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev, struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); struct intel_rps *rps = &i915->gt.rps; - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->cur_freq)); + return sysfs_emit(buf, "%d\n", intel_rps_get_requested_frequency(rps)); } static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) @@ -326,9 +326,10 @@ static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev, static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) { struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt.rps; + struct intel_gt *gt = &dev_priv->gt; + struct intel_rps *rps = >->rps; - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->max_freq_softlimit)); + return sysfs_emit(buf, "%d\n", intel_rps_get_max_frequency(rps)); } static ssize_t gt_max_freq_mhz_store(struct device *kdev, @@ -336,7 +337,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev, const char *buf, size_t count) { struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt.rps; + struct intel_gt *gt = &dev_priv->gt; + struct intel_rps *rps = >->rps; ssize_t ret; u32 val; @@ -344,53 +346,26 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev, if (ret) return ret; - mutex_lock(&rps->lock); - - val = intel_freq_opcode(rps, val); - if (val < rps->min_freq || - val > rps->max_freq || - val < rps->min_freq_softlimit) { - ret = -EINVAL; - goto unlock; - } - - if (val > rps->rp0_freq) - DRM_DEBUG("User requested overclocking to %d\n", - intel_gpu_freq(rps, val)); - - rps->max_freq_softlimit = val; - - val = clamp_t(int, rps->cur_freq, - rps->min_freq_softlimit, - rps->max_freq_softlimit); - - /* - * We still need *_set_rps to process the new max_delay and - * update the interrupt limits and PMINTRMSK even though - * frequency request may be unchanged. - */ - intel_rps_set(rps, val); - -unlock: - mutex_unlock(&rps->lock); + ret = intel_rps_set_max_frequency(rps, val); return ret ?: count; } static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) { - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt.rps; + struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); + struct intel_gt *gt = &i915->gt; + struct intel_rps *rps = >->rps; - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->min_freq_softlimit)); + return sysfs_emit(buf, "%d\n", intel_rps_get_min_frequency(rps)); } static ssize_t gt_min_freq_mhz_store(struct device *kdev, struct device_attribute *attr, const char *buf, size_t count) { - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt.rps; + struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); + struct intel_rps *rps = &i915->gt.rps; ssize_t ret; u32 val; @@ -398,31 +373,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev, if (ret) return ret; - mutex_lock(&rps->lock); - - val = intel_freq_opcode(rps, val); - if (val < rps->min_freq || - val > rps->max_freq || - val > rps->max_freq_softlimit) { - ret = -EINVAL; - goto unlock; - } - - rps->min_freq_softlimit = val; - - val = clamp_t(int, rps->cur_freq, - rps->min_freq_softlimit, - rps->max_freq_softlimit); - - /* - * We still need *_set_rps to process the new min_delay and - * update the interrupt limits and PMINTRMSK even though - * frequency request may be unchanged. - */ - intel_rps_set(rps, val); - -unlock: - mutex_unlock(&rps->lock); + ret = intel_rps_set_min_frequency(rps, val); return ret ?: count; } @@ -448,11 +399,11 @@ static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr u32 val; if (attr == &dev_attr_gt_RP0_freq_mhz) - val = intel_gpu_freq(rps, rps->rp0_freq); + val = intel_rps_get_rp0_frequency(rps); else if (attr == &dev_attr_gt_RP1_freq_mhz) - val = intel_gpu_freq(rps, rps->rp1_freq); + val = intel_rps_get_rp1_frequency(rps); else if (attr == &dev_attr_gt_RPn_freq_mhz) - val = intel_gpu_freq(rps, rps->min_freq); + val = intel_rps_get_rpn_frequency(rps); else BUG();