From patchwork Tue Nov 29 14:40:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Riana Tauro X-Patchwork-Id: 13058664 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 02F6AC46467 for ; Tue, 29 Nov 2022 14:39:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F2CDA10E3D8; Tue, 29 Nov 2022 14:39:19 +0000 (UTC) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4E66710E3D8 for ; Tue, 29 Nov 2022 14:39:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1669732749; x=1701268749; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=i6IG+26XnELfsUzMkVZCkULMTTw/TfBQ1l/IugshM0o=; b=WNcBI2190OEeLjq2og49vaZl+xA+vuHL03ZVrxRNgedfC/sPBiGgdw/E 26yBSRIj9Ra/9AxRVZi4xRKbTRQ87gnqDoRTfsTeJM7DDEBzQzFszkZlb +fqRbxssSo2yv8asydhrxbKPd32Tu4qoqjPtqKVNPk2kax0zGQdjcBdqi EBFYwO47kK5mBDdrmvlK6dDNdxAbT3vOFQU5vUtRlX8HGtIr8X5B1tuZW lBOjMWvc1u0KFGtQTrdHMTj0DVFGjBndM7N016W8ltd9DgFIJ4z9wyQBH XUpnaNcNG+bEQOEGMGJzMJ1s83KE9eaxxylJf2rdPNHcuPsct4fFwIvTD A==; X-IronPort-AV: E=McAfee;i="6500,9779,10546"; a="298471233" X-IronPort-AV: E=Sophos;i="5.96,203,1665471600"; d="scan'208";a="298471233" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Nov 2022 06:39:09 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10546"; a="768446219" X-IronPort-AV: E=Sophos;i="5.96,203,1665471600"; d="scan'208";a="768446219" Received: from rtauro-desk.iind.intel.com ([10.190.239.41]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Nov 2022 06:39:06 -0800 From: Riana Tauro To: intel-gfx@lists.freedesktop.org Date: Tue, 29 Nov 2022 20:10:09 +0530 Message-Id: <20221129144010.2182768-3-riana.tauro@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221129144010.2182768-1-riana.tauro@intel.com> References: <20221129144010.2182768-1-riana.tauro@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 2/3] drm/i915/hwmon: Add helper function to obtain energy values 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" Add an interface to obtain hwmon energy values. The function returns per-gt energy if register is valid else returns the device level energy. This is used by selftest to verify power consumption v2 : use i915_hwmon prefix (Anshuman) v3 : re-use is_visible function of energy to remove redundant code (Anshuman) v4 : fix kernel-doc (Anshuman) add per-gt hwmon support (Ashutosh) Signed-off-by: Riana Tauro Reviewed-by: Anshuman Gupta --- drivers/gpu/drm/i915/i915_hwmon.c | 28 ++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_hwmon.h | 3 +++ 2 files changed, 31 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index c588a17f97e9..57d4e96d5c72 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -442,6 +442,34 @@ hwm_energy_read(struct hwm_drvdata *ddat, u32 attr, long *val) } } +/** + * i915_hwmon_get_energy - obtains energy value + * @gt: intel_gt structure + * @energy: pointer to store energy in uJ + * + * This function checks for the validity of the underlying energy + * hardware register and obtains the per-gt/package level energy + * values. + * + * Return: 0 on success, -EOPNOTSUPP if register is invalid + */ +int +i915_hwmon_get_energy(struct intel_gt *gt, long *energy) +{ + struct i915_hwmon *hwmon = gt->i915->hwmon; + struct hwm_drvdata *ddat = &hwmon->ddat; + struct hwm_drvdata *ddat_gt = hwmon->ddat_gt + gt->info.id; + + if (hwm_energy_is_visible(ddat_gt, hwmon_energy_input)) + hwm_energy(ddat_gt, energy); + else if (hwm_energy_is_visible(ddat, hwmon_energy_input)) + hwm_energy(ddat, energy); + else + return -EOPNOTSUPP; + + return 0; +} + static umode_t hwm_curr_is_visible(const struct hwm_drvdata *ddat, u32 attr) { diff --git a/drivers/gpu/drm/i915/i915_hwmon.h b/drivers/gpu/drm/i915/i915_hwmon.h index 7ca9cf2c34c9..1c38cfdbb7e9 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.h +++ b/drivers/gpu/drm/i915/i915_hwmon.h @@ -8,13 +8,16 @@ #define __I915_HWMON_H__ struct drm_i915_private; +struct intel_gt; #if IS_REACHABLE(CONFIG_HWMON) void i915_hwmon_register(struct drm_i915_private *i915); void i915_hwmon_unregister(struct drm_i915_private *i915); +int i915_hwmon_get_energy(struct intel_gt *gt, long *energy); #else static inline void i915_hwmon_register(struct drm_i915_private *i915) { }; static inline void i915_hwmon_unregister(struct drm_i915_private *i915) { }; +static inline int i915_hwmon_get_energy(struct intel_gt *gt, long *energy) { return -EOPNOTSUPP; } #endif #endif /* __I915_HWMON_H__ */