From nobody Tue Mar 3 05:05:26 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5B8A31E84F; Mon, 2 Mar 2026 22:32:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772490741; cv=none; b=JKHOXogLLGb7LZraD1J8ZpY8N9BQWAAT0i3bJAAkSnRmvxlGqsq6UGGgSMh7HkrPaf5V8UfNGeYS7ItqOKClhYgoJ5G2KfbI+U+euSR9Mu8fD0UsQU9FgUtnULaVSMOLioPhtI491eJ68fszuQes4r7971lS66Ar72nn9iPxmFY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772490741; c=relaxed/simple; bh=w0R5D59fw0/fMLooZV/U0tOSrRlfoHbcQIZawVTLQP4=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FKuw0aSoJO/MZoOFYTjPMZxdXwSAkB99Qx+awDbUIwU4hxjj6x+ykROQnkHG1L2Ra97YUbmDiwkkPxGHgPJ3N4kRY2bCSFxPTJSMM6PVf5TDDa9ETM0/G1CvNTJH/34h862NdoXH39A4OKO8SExgrMmBRVEk2KmvAYRA6tWXzCE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=SXcLagpt; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="SXcLagpt" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772490739; x=1804026739; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=w0R5D59fw0/fMLooZV/U0tOSrRlfoHbcQIZawVTLQP4=; b=SXcLagptzr3vAiVgoMg4Cm/YJ1bxWPdKPCnNpRG6bd7sjSalqUSmzUSN WIsWonIJ8zzcIkNNepHZRGtoafILcDDMGqN7wxtc+JYxFckmOWpfU524X qPLi2Gk5L0pD/wFlPA7IJRDZUA2mSlPV0tW4L/LKC3gsrjkPCGjpVuz3Q 8ieE6WxQwoICw/xP4nyYhcDocz0liedykAOhY/2FyGE2T7qun48eS0Z+X iyD6zciZDEafnaSwiP4Y9N6VMXPNrpnH2LaZ/kd6gEZ/Xl+70DNde3w++ u+144YhbhIGv4xxm7T6PZlGlLPKVHQJQ9IVxnSsb3U9As99meVG9tEOMb g==; X-CSE-ConnectionGUID: WRfy64d1QmOShhbYgaM0wA== X-CSE-MsgGUID: YbUMa7xqSUSptaeQ8QrJrA== X-IronPort-AV: E=McAfee;i="6800,10657,11717"; a="73554502" X-IronPort-AV: E=Sophos;i="6.21,320,1763452800"; d="scan'208";a="73554502" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2026 14:32:18 -0800 X-CSE-ConnectionGUID: onJHx5fsQYOv274+VXLo+w== X-CSE-MsgGUID: Is5S46t8TSmdDP1nnj6wcg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,320,1763452800"; d="scan'208";a="217793510" Received: from sghuge-mobl2.amr.corp.intel.com (HELO xpardee-desk.lan) ([10.125.108.86]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2026 14:32:18 -0800 From: Xi Pardee To: xi.pardee@linux.intel.com, irenic.rajneesh@gmail.com, david.e.box@linux.intel.com, ilpo.jarvinen@linux.intel.com, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 2/6] platform/x86/intel/pmc: Enable Pkgc blocking residency counter Date: Mon, 2 Mar 2026 14:32:04 -0800 Message-ID: <20260302223214.484585-3-xi.pardee@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260302223214.484585-1-xi.pardee@linux.intel.com> References: <20260302223214.484585-1-xi.pardee@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Enable the Package C-state blocking counter in the PMT telemetry region. This counter reports the number of 10=E2=80=AF=C2=B5s intervals dur= ing which a Package C-state 10.2/3 entry was blocked for the specified reasons. Signed-off-by: Xi Pardee --- drivers/platform/x86/intel/pmc/core.c | 27 +++++++++++++++++++++++++++ drivers/platform/x86/intel/pmc/core.h | 8 ++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/i= ntel/pmc/core.c index bf95a1f2ba428..e5b48a68cf495 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -1093,6 +1093,28 @@ static int pmc_core_pkgc_ltr_blocker_show(struct seq= _file *s, void *unused) } DEFINE_SHOW_ATTRIBUTE(pmc_core_pkgc_ltr_blocker); =20 +static int pmc_core_pkgc_blocker_residency_show(struct seq_file *s, void *= unused) +{ + struct pmc_dev *pmcdev =3D s->private; + const char **pkgc_blocker_counters; + u32 counter, offset; + unsigned int i; + int ret; + + offset =3D pmcdev->pkgc_blocker_offset; + pkgc_blocker_counters =3D pmcdev->pkgc_blocker_counters; + for (i =3D 0; pkgc_blocker_counters[i]; i++, offset++) { + ret =3D pmt_telem_read32(pmcdev->pc_ep, offset, + &counter, 1); + if (ret) + return ret; + seq_printf(s, "%-30s %-30u\n", pkgc_blocker_counters[i], counter); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(pmc_core_pkgc_blocker_residency); + static int pmc_core_lpm_latch_mode_show(struct seq_file *s, void *unused) { struct pmc_dev *pmcdev =3D s->private; @@ -1380,6 +1402,8 @@ void pmc_core_punit_pmt_init(struct pmc_dev *pmcdev, = struct pmc_dev_info *pmc_de pmcdev->pc_ep =3D ep; pmcdev->pkgc_ltr_blocker_counters =3D pmc_dev_info->pkgc_ltr_blocker_cou= nters; pmcdev->pkgc_ltr_blocker_offset =3D pmc_dev_info->pkgc_ltr_blocker_offse= t; + pmcdev->pkgc_blocker_counters =3D pmc_dev_info->pkgc_blocker_counters; + pmcdev->pkgc_blocker_offset =3D pmc_dev_info->pkgc_blocker_offset; } =20 release_dev: @@ -1512,6 +1536,9 @@ static void pmc_core_dbgfs_register(struct pmc_dev *p= mcdev, struct pmc_dev_info debugfs_create_file("pkgc_ltr_blocker_show", 0444, pmcdev->dbgfs_dir, pmcdev, &pmc_core_pkgc_ltr_blocker_fops); + debugfs_create_file("pkgc_blocker_residency_show", 0444, + pmcdev->dbgfs_dir, pmcdev, + &pmc_core_pkgc_blocker_residency_fops); } =20 } diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/i= ntel/pmc/core.h index a20aab73c1409..829b1dee3f636 100644 --- a/drivers/platform/x86/intel/pmc/core.h +++ b/drivers/platform/x86/intel/pmc/core.h @@ -455,6 +455,8 @@ struct pmc { * * @pkgc_ltr_blocker_counters: Array of PKGC LTR blocker counters * @pkgc_ltr_blocker_offset: Offset to PKGC LTR blockers in telemetry regi= on + * @pkgc_blocker_counters: Array of PKGC blocker counters + * @pkgc_blocker_offset: Offset to PKGC blocker in telemetry region * * pmc_dev contains info about power management controller device. */ @@ -480,6 +482,8 @@ struct pmc_dev { =20 const char **pkgc_ltr_blocker_counters; u32 pkgc_ltr_blocker_offset; + const char **pkgc_blocker_counters; + u32 pkgc_blocker_offset; }; =20 enum pmc_index { @@ -495,6 +499,7 @@ enum pmc_index { * @dmu_guids: List of Die Management Unit GUID * @pc_guid: GUID for telemetry region to read PKGC blocker info * @pkgc_ltr_blocker_offset: Offset to PKGC LTR blockers in telemetry regi= on + * @pkgc_blocker_offset:Offset to PKGC blocker in telemetry region * @regmap_list: Pointer to a list of pmc_info structure that could be * available for the platform. When set, this field implies * SSRAM support. @@ -502,6 +507,7 @@ enum pmc_index { * specific attributes of the primary PMC * @sub_req_show: File operations to show substate requirements * @pkgc_ltr_blocker_counters: Array of PKGC LTR blocker counters + * @pkgc_blocker_counters: Array of PKGC blocker counters * @suspend: Function to perform platform specific suspend * @resume: Function to perform platform specific resume * @init: Function to perform platform specific init action @@ -512,10 +518,12 @@ struct pmc_dev_info { u32 *dmu_guids; u32 pc_guid; u32 pkgc_ltr_blocker_offset; + u32 pkgc_blocker_offset; struct pmc_info *regmap_list; const struct pmc_reg_map *map; const struct file_operations *sub_req_show; const char **pkgc_ltr_blocker_counters; + const char **pkgc_blocker_counters; void (*suspend)(struct pmc_dev *pmcdev); int (*resume)(struct pmc_dev *pmcdev); int (*init)(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_info); --=20 2.43.0