From patchwork Mon Dec 19 15:46:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 635360 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F882C10F1B for ; Mon, 19 Dec 2022 15:39:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231370AbiLSPjX (ORCPT ); Mon, 19 Dec 2022 10:39:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232299AbiLSPjU (ORCPT ); Mon, 19 Dec 2022 10:39:20 -0500 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E70911815 for ; Mon, 19 Dec 2022 07:39:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1671464359; x=1703000359; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=sHoWlnZF2lxigqX1MPRD5MgEFvKhfKxiXtw5H2qwB8k=; b=gFGOp3b5lckexdj3CU0p13/KpoqlQa2VX9yF4KHpnxPv7niSUpGKb/+Z /CCM1Z8wq1ud4tw9qe7zmWwBv6fvFdICzi7VCmxFjerB9s3fApGLaz40j ZgFUgwoO4jLzSx3vBk9o9YOqMSPDSG0/T+zzbsa+GtCffmhk8VIxbxr/u zAlYV//95R7g1Kk5P1nRDzbpALloDmXGYgfhXlwNZ9PaXy25iWe9XH3MC t3j50pvIKu1dUV025FREeTTBwrPcAj0l3v9lrmvyGBM403Ha3VlC3AXl3 v6T9bIoZY2AlrrW0SZqVeQPII3mIrY1PUZrKL5bDx1gNQRESgEYR7W7zk w==; X-IronPort-AV: E=McAfee;i="6500,9779,10566"; a="307051265" X-IronPort-AV: E=Sophos;i="5.96,255,1665471600"; d="scan'208";a="307051265" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2022 07:39:18 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10566"; a="774960348" X-IronPort-AV: E=Sophos;i="5.96,255,1665471600"; d="scan'208";a="774960348" Received: from power-sh.sh.intel.com ([10.239.183.7]) by orsmga004.jf.intel.com with ESMTP; 19 Dec 2022 07:39:17 -0800 From: Zhang Rui To: rjw@rjwysocki.net, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, srinivas.pandruvada@linux.intel.com, rui.zhang@intel.com Subject: [PATCH V2 5/6] thermal/x86_pkg_temp_thermal: Use Intel TCC library Date: Mon, 19 Dec 2022 23:46:19 +0800 Message-Id: <20221219154620.3630-6-rui.zhang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221219154620.3630-1-rui.zhang@intel.com> References: <20221219154620.3630-1-rui.zhang@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Cleanup the code by using Intel TCC library for TCC (Thermal Control Circuitry) MSR access. Signed-off-by: Zhang Rui --- drivers/thermal/intel/Kconfig | 1 + drivers/thermal/intel/x86_pkg_temp_thermal.c | 44 ++++++-------------- 2 files changed, 14 insertions(+), 31 deletions(-) diff --git a/drivers/thermal/intel/Kconfig b/drivers/thermal/intel/Kconfig index dafdb3dd3fc7..fd41c810629b 100644 --- a/drivers/thermal/intel/Kconfig +++ b/drivers/thermal/intel/Kconfig @@ -21,6 +21,7 @@ config X86_PKG_TEMP_THERMAL depends on X86_THERMAL_VECTOR select THERMAL_GOV_USER_SPACE select THERMAL_WRITABLE_TRIPS + select INTEL_TCC default m help Enable this to register CPU digital sensor for package temperature as diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index a0e234fce71a..416ff23da4de 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -104,38 +105,18 @@ static struct zone_device *pkg_temp_thermal_get_dev(unsigned int cpu) return NULL; } -/* -* tj-max is interesting because threshold is set relative to this -* temperature. -*/ -static int get_tj_max(int cpu, u32 *tj_max) -{ - u32 eax, edx, val; - int err; - - err = rdmsr_safe_on_cpu(cpu, MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); - if (err) - return err; - - val = (eax >> 16) & 0xff; - *tj_max = val * 1000; - - return val ? 0 : -EINVAL; -} - static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) { struct zone_device *zonedev = tzd->devdata; - u32 eax, edx; + int val; - rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_STATUS, - &eax, &edx); - if (eax & 0x80000000) { - *temp = zonedev->tj_max - ((eax >> 16) & 0x7f) * 1000; - pr_debug("sys_get_curr_temp %d\n", *temp); - return 0; - } - return -EINVAL; + val = intel_tcc_get_temp(zonedev->cpu, true); + if (val < 0) + return val; + + *temp = val * 1000; + pr_debug("sys_get_curr_temp %d\n", *temp); + return 0; } static int sys_get_trip_temp(struct thermal_zone_device *tzd, @@ -345,9 +326,9 @@ static int pkg_temp_thermal_device_add(unsigned int cpu) thres_count = clamp_val(thres_count, 0, MAX_NUMBER_OF_TRIPS); - err = get_tj_max(cpu, &tj_max); - if (err) - return err; + tj_max = intel_tcc_get_tjmax(cpu); + if (tj_max < 0) + return tj_max; zonedev = kzalloc(sizeof(*zonedev), GFP_KERNEL); if (!zonedev) @@ -536,6 +517,7 @@ static void __exit pkg_temp_thermal_exit(void) } module_exit(pkg_temp_thermal_exit) +MODULE_IMPORT_NS(INTEL_TCC); MODULE_DESCRIPTION("X86 PKG TEMP Thermal Driver"); MODULE_AUTHOR("Srinivas Pandruvada "); MODULE_LICENSE("GPL v2");