From patchwork Tue Jun 20 23:01:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286494 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 4E817EB64D8 for ; Tue, 20 Jun 2023 23:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229490AbjFTXB5 (ORCPT ); Tue, 20 Jun 2023 19:01:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229927AbjFTXBz (ORCPT ); Tue, 20 Jun 2023 19:01:55 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3EC31A8; Tue, 20 Jun 2023 16:01:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687302113; x=1718838113; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gGpDiM9bWj9bntYZQruCdvhXBOOoc52WSEV/glzF/vQ=; b=U66D3E1J6aARG5nO2ZvFAyjmHzkr2bz7TD98D3fA8gXI/HjaEVQNLpvL 90B2xS1WQsWFjFKA9MJ973lbjWvDd80pvXWy/vtfFtkPoJnL5zc/STNr8 O3WzbUvS/5rd6uRapmvo16MfUTS7ZJxRmttpXRrHIIZsns2UdRtAsHwvs 5S/dq/+segZRDWJxCxpMDph3KjX2IsjWuD8UCEaTvV/PfzBDBZ7Qt8UHs TbWKs5y1Ac9DhhjreWgnynOj4kQ9XOkd73XJROmQvIy6GCO/6PVcMpZG7 5IziW1GsA5pX/J55FW44UVk/PKjPcn9Yl+DKV0noMmxzb9h9HTquZnMFx A==; X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="340347272" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="340347272" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2023 16:01:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465309" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465309" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:52 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 1/7] thermal: int340x: processor_thermal: Move mailbox code to common module Date: Tue, 20 Jun 2023 16:01:44 -0700 Message-Id: <20230620230150.3068704-2-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The processor thermal mailbox is used for workload type request and also in the processor thermal RFIM module. So, move the workload type request code to its own module from the current processor thermal mailbox module. processor_thermal_mailbox.c contains only mailbox read/write related source code. The source related to workload_types requests is moved to a module processor_thermal_wlt_req.c. In addition -Rename PROC_THERMAL_FEATURE_MBOX to PROC_THERMAL_FEATURE_WLT_REQ. - proc_thermal_mbox_add(), which adds workload type sysfs attribute group is renamed to proc_thermal_wlt_req_add(). -proc_thermal_mbox_remove() is renamed to proc_thermal_wlt_req_remove(). While here, resolve check patch warnings for 100 columns for only modified lines. No functional changes are expected. Signed-off-by: Srinivas Pandruvada Reviewed-by: Zhang Rui --- .../thermal/intel/int340x_thermal/Makefile | 1 + .../processor_thermal_device.c | 8 +- .../processor_thermal_device.h | 12 +- .../processor_thermal_device_pci.c | 10 +- .../processor_thermal_device_pci_legacy.c | 3 +- .../int340x_thermal/processor_thermal_mbox.c | 130 ----------------- .../processor_thermal_wlt_req.c | 137 ++++++++++++++++++ 7 files changed, 160 insertions(+), 141 deletions(-) create mode 100644 drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c diff --git a/drivers/thermal/intel/int340x_thermal/Makefile b/drivers/thermal/intel/int340x_thermal/Makefile index 4e852ce4a5d5..76e053e541f0 100644 --- a/drivers/thermal/intel/int340x_thermal/Makefile +++ b/drivers/thermal/intel/int340x_thermal/Makefile @@ -10,5 +10,6 @@ obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_device_pci.o obj-$(CONFIG_PROC_THERMAL_MMIO_RAPL) += processor_thermal_rapl.o obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_rfim.o obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_mbox.o +obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_wlt_req.o obj-$(CONFIG_INT3406_THERMAL) += int3406_thermal.o obj-$(CONFIG_ACPI_THERMAL_REL) += acpi_thermal_rel.o diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c index 3ca0a2f5937f..48f6c72b05f6 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c @@ -346,8 +346,8 @@ int proc_thermal_mmio_add(struct pci_dev *pdev, } } - if (feature_mask & PROC_THERMAL_FEATURE_MBOX) { - ret = proc_thermal_mbox_add(pdev, proc_priv); + if (feature_mask & PROC_THERMAL_FEATURE_WLT_REQ) { + ret = proc_thermal_wlt_req_add(pdev, proc_priv); if (ret) { dev_err(&pdev->dev, "failed to add MBOX interface\n"); goto err_rem_rfim; @@ -374,8 +374,8 @@ void proc_thermal_mmio_remove(struct pci_dev *pdev, struct proc_thermal_device * proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DVFS) proc_thermal_rfim_remove(pdev); - if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_MBOX) - proc_thermal_mbox_remove(pdev); + if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WLT_REQ) + proc_thermal_wlt_req_remove(pdev); } EXPORT_SYMBOL_GPL(proc_thermal_mmio_remove); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h index 7acaa8f1b896..7cdeca2edc21 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h @@ -59,7 +59,7 @@ struct rapl_mmio_regs { #define PROC_THERMAL_FEATURE_RAPL 0x01 #define PROC_THERMAL_FEATURE_FIVR 0x02 #define PROC_THERMAL_FEATURE_DVFS 0x04 -#define PROC_THERMAL_FEATURE_MBOX 0x08 +#define PROC_THERMAL_FEATURE_WLT_REQ 0x08 #define PROC_THERMAL_FEATURE_DLVR 0x10 #if IS_ENABLED(CONFIG_PROC_THERMAL_MMIO_RAPL) @@ -80,8 +80,14 @@ static void __maybe_unused proc_thermal_rapl_remove(void) int proc_thermal_rfim_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); void proc_thermal_rfim_remove(struct pci_dev *pdev); -int proc_thermal_mbox_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); -void proc_thermal_mbox_remove(struct pci_dev *pdev); +int proc_thermal_wlt_req_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); +void proc_thermal_wlt_req_remove(struct pci_dev *pdev); + +#define MBOX_CMD_WORKLOAD_TYPE_READ 0x0E +#define MBOX_CMD_WORKLOAD_TYPE_WRITE 0x0F + +#define MBOX_DATA_BIT_AC_DC 30 +#define MBOX_DATA_BIT_VALID 31 int processor_thermal_send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp); int processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16 id, u32 data); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 0d1e98007270..5a2bcfff0a68 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -350,9 +350,13 @@ static SIMPLE_DEV_PM_OPS(proc_thermal_pci_pm, proc_thermal_pci_suspend, proc_thermal_pci_resume); static const struct pci_device_id proc_thermal_pci_ids[] = { - { PCI_DEVICE_DATA(INTEL, ADL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX) }, - { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX | PROC_THERMAL_FEATURE_DLVR) }, - { PCI_DEVICE_DATA(INTEL, RPL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX) }, + { PCI_DEVICE_DATA(INTEL, ADL_THERMAL, PROC_THERMAL_FEATURE_RAPL | + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, + { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL, PROC_THERMAL_FEATURE_RAPL | + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ | + PROC_THERMAL_FEATURE_DLVR) }, + { PCI_DEVICE_DATA(INTEL, RPL_THERMAL, PROC_THERMAL_FEATURE_RAPL | + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, { }, }; diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_legacy.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_legacy.c index 09e032f822f3..b8c58a44fb93 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_legacy.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_legacy.c @@ -137,7 +137,8 @@ static const struct pci_device_id proc_thermal_pci_ids[] = { { PCI_DEVICE_DATA(INTEL, ICL_THERMAL, PROC_THERMAL_FEATURE_RAPL) }, { PCI_DEVICE_DATA(INTEL, JSL_THERMAL, 0) }, { PCI_DEVICE_DATA(INTEL, SKL_THERMAL, PROC_THERMAL_FEATURE_RAPL) }, - { PCI_DEVICE_DATA(INTEL, TGL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_MBOX) }, + { PCI_DEVICE_DATA(INTEL, TGL_THERMAL, PROC_THERMAL_FEATURE_RAPL | + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_WLT_REQ) }, { }, }; diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c index 0b89a4340ff4..ec766c5615b7 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c @@ -10,18 +10,12 @@ #include #include "processor_thermal_device.h" -#define MBOX_CMD_WORKLOAD_TYPE_READ 0x0E -#define MBOX_CMD_WORKLOAD_TYPE_WRITE 0x0F - #define MBOX_OFFSET_DATA 0x5810 #define MBOX_OFFSET_INTERFACE 0x5818 #define MBOX_BUSY_BIT 31 #define MBOX_RETRY_COUNT 100 -#define MBOX_DATA_BIT_VALID 31 -#define MBOX_DATA_BIT_AC_DC 30 - static DEFINE_MUTEX(mbox_lock); static int wait_for_mbox_ready(struct proc_thermal_device *proc_priv) @@ -114,128 +108,4 @@ int processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16 id, u32 data } EXPORT_SYMBOL_NS_GPL(processor_thermal_send_mbox_write_cmd, INT340X_THERMAL); -/* List of workload types */ -static const char * const workload_types[] = { - "none", - "idle", - "semi_active", - "bursty", - "sustained", - "battery_life", - NULL -}; - -static ssize_t workload_available_types_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int i = 0; - int ret = 0; - - while (workload_types[i] != NULL) - ret += sprintf(&buf[ret], "%s ", workload_types[i++]); - - ret += sprintf(&buf[ret], "\n"); - - return ret; -} - -static DEVICE_ATTR_RO(workload_available_types); - -static ssize_t workload_type_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct pci_dev *pdev = to_pci_dev(dev); - char str_preference[15]; - u32 data = 0; - ssize_t ret; - - ret = sscanf(buf, "%14s", str_preference); - if (ret != 1) - return -EINVAL; - - ret = match_string(workload_types, -1, str_preference); - if (ret < 0) - return ret; - - ret &= 0xff; - - if (ret) - data = BIT(MBOX_DATA_BIT_VALID) | BIT(MBOX_DATA_BIT_AC_DC); - - data |= ret; - - ret = send_mbox_write_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_WRITE, data); - if (ret) - return false; - - return count; -} - -static ssize_t workload_type_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - u64 cmd_resp; - int ret; - - ret = send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp); - if (ret) - return false; - - cmd_resp &= 0xff; - - if (cmd_resp > ARRAY_SIZE(workload_types) - 1) - return -EINVAL; - - return sprintf(buf, "%s\n", workload_types[cmd_resp]); -} - -static DEVICE_ATTR_RW(workload_type); - -static struct attribute *workload_req_attrs[] = { - &dev_attr_workload_available_types.attr, - &dev_attr_workload_type.attr, - NULL -}; - -static const struct attribute_group workload_req_attribute_group = { - .attrs = workload_req_attrs, - .name = "workload_request" -}; - -static bool workload_req_created; - -int proc_thermal_mbox_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) -{ - u64 cmd_resp; - int ret; - - /* Check if there is a mailbox support, if fails return success */ - ret = send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp); - if (ret) - return 0; - - ret = sysfs_create_group(&pdev->dev.kobj, &workload_req_attribute_group); - if (ret) - return ret; - - workload_req_created = true; - - return 0; -} -EXPORT_SYMBOL_GPL(proc_thermal_mbox_add); - -void proc_thermal_mbox_remove(struct pci_dev *pdev) -{ - if (workload_req_created) - sysfs_remove_group(&pdev->dev.kobj, &workload_req_attribute_group); - - workload_req_created = false; - -} -EXPORT_SYMBOL_GPL(proc_thermal_mbox_remove); - MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c new file mode 100644 index 000000000000..d22c86fad231 --- /dev/null +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * processor thermal device for Workload type hints + * update from user space + * + * Copyright (c) 2020-2023, Intel Corporation. + */ + +#include +#include "processor_thermal_device.h" + +/* List of workload types */ +static const char * const workload_types[] = { + "none", + "idle", + "semi_active", + "bursty", + "sustained", + "battery_life", + NULL +}; + +static ssize_t workload_available_types_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int i = 0; + int ret = 0; + + while (workload_types[i] != NULL) + ret += sprintf(&buf[ret], "%s ", workload_types[i++]); + + ret += sprintf(&buf[ret], "\n"); + + return ret; +} + +static DEVICE_ATTR_RO(workload_available_types); + +static ssize_t workload_type_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pci_dev *pdev = to_pci_dev(dev); + char str_preference[15]; + u32 data = 0; + ssize_t ret; + + ret = sscanf(buf, "%14s", str_preference); + if (ret != 1) + return -EINVAL; + + ret = match_string(workload_types, -1, str_preference); + if (ret < 0) + return ret; + + ret &= 0xff; + + if (ret) + data = BIT(MBOX_DATA_BIT_VALID) | BIT(MBOX_DATA_BIT_AC_DC); + + data |= ret; + + ret = processor_thermal_send_mbox_write_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_WRITE, data); + if (ret) + return false; + + return count; +} + +static ssize_t workload_type_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + u64 cmd_resp; + int ret; + + ret = processor_thermal_send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp); + if (ret) + return false; + + cmd_resp &= 0xff; + + if (cmd_resp > ARRAY_SIZE(workload_types) - 1) + return -EINVAL; + + return sprintf(buf, "%s\n", workload_types[cmd_resp]); +} + +static DEVICE_ATTR_RW(workload_type); + +static struct attribute *workload_req_attrs[] = { + &dev_attr_workload_available_types.attr, + &dev_attr_workload_type.attr, + NULL +}; + +static const struct attribute_group workload_req_attribute_group = { + .attrs = workload_req_attrs, + .name = "workload_request" +}; + +static bool workload_req_created; + +int proc_thermal_wlt_req_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) +{ + u64 cmd_resp; + int ret; + + /* Check if there is a mailbox support, if fails return success */ + ret = processor_thermal_send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp); + if (ret) + return 0; + + ret = sysfs_create_group(&pdev->dev.kobj, &workload_req_attribute_group); + if (ret) + return ret; + + workload_req_created = true; + + return 0; +} +EXPORT_SYMBOL_GPL(proc_thermal_wlt_req_add); + +void proc_thermal_wlt_req_remove(struct pci_dev *pdev) +{ + if (workload_req_created) + sysfs_remove_group(&pdev->dev.kobj, &workload_req_attribute_group); + + workload_req_created = false; + +} +EXPORT_SYMBOL_GPL(proc_thermal_wlt_req_remove); + +MODULE_IMPORT_NS(INT340X_THERMAL); +MODULE_LICENSE("GPL"); From patchwork Tue Jun 20 23:01:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286493 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 F24E9EB64DB for ; Tue, 20 Jun 2023 23:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229955AbjFTXB4 (ORCPT ); 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X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="340347277" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="340347277" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2023 16:01:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465318" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465318" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:53 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 2/7] thermal: int340x: processor_thermal: Add interrupt configuration Date: Tue, 20 Jun 2023 16:01:45 -0700 Message-Id: <20230620230150.3068704-3-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Some features on this PCI devices require interrupt support. Here interrupts are enabled/disabled via sending mailbox commands. The mailbox command ID is 0x1E for read and 0x1F for write. The interrupt configuration will require mutex protection as it involved read-modify-write operation. Since mutex are already used in the mailbox read/write functions: send_mbox_write_cmd() and send_mbox_read_cmd(), there will be double locking. But, this can be avoided by moving mutexes from mailbox read/write processing functions to the calling (exported) functions. Signed-off-by: Srinivas Pandruvada --- .../processor_thermal_device.h | 2 + .../int340x_thermal/processor_thermal_mbox.c | 85 ++++++++++++++----- 2 files changed, 68 insertions(+), 19 deletions(-) diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h index 7cdeca2edc21..defc919cb020 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h @@ -91,6 +91,8 @@ void proc_thermal_wlt_req_remove(struct pci_dev *pdev); int processor_thermal_send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp); int processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16 id, u32 data); +int processor_thermal_mbox_interrupt_config(struct pci_dev *pdev, bool enable, int enable_bit, + int time_window); int proc_thermal_add(struct device *dev, struct proc_thermal_device *priv); void proc_thermal_remove(struct proc_thermal_device *proc_priv); int proc_thermal_suspend(struct device *dev); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c index ec766c5615b7..7ef0af3f5bef 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c @@ -45,23 +45,16 @@ static int send_mbox_write_cmd(struct pci_dev *pdev, u16 id, u32 data) int ret; proc_priv = pci_get_drvdata(pdev); - - mutex_lock(&mbox_lock); - ret = wait_for_mbox_ready(proc_priv); if (ret) - goto unlock_mbox; + return ret; writel(data, (proc_priv->mmio_base + MBOX_OFFSET_DATA)); /* Write command register */ reg_data = BIT_ULL(MBOX_BUSY_BIT) | id; writel(reg_data, (proc_priv->mmio_base + MBOX_OFFSET_INTERFACE)); - ret = wait_for_mbox_ready(proc_priv); - -unlock_mbox: - mutex_unlock(&mbox_lock); - return ret; + return wait_for_mbox_ready(proc_priv); } static int send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp) @@ -71,12 +64,9 @@ static int send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp) int ret; proc_priv = pci_get_drvdata(pdev); - - mutex_lock(&mbox_lock); - ret = wait_for_mbox_ready(proc_priv); if (ret) - goto unlock_mbox; + return ret; /* Write command register */ reg_data = BIT_ULL(MBOX_BUSY_BIT) | id; @@ -84,28 +74,85 @@ static int send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp) ret = wait_for_mbox_ready(proc_priv); if (ret) - goto unlock_mbox; + return ret; if (id == MBOX_CMD_WORKLOAD_TYPE_READ) *resp = readl(proc_priv->mmio_base + MBOX_OFFSET_DATA); else *resp = readq(proc_priv->mmio_base + MBOX_OFFSET_DATA); -unlock_mbox: - mutex_unlock(&mbox_lock); - return ret; + return 0; } int processor_thermal_send_mbox_read_cmd(struct pci_dev *pdev, u16 id, u64 *resp) { - return send_mbox_read_cmd(pdev, id, resp); + int ret; + + mutex_lock(&mbox_lock); + ret = send_mbox_read_cmd(pdev, id, resp); + mutex_unlock(&mbox_lock); + + return ret; } EXPORT_SYMBOL_NS_GPL(processor_thermal_send_mbox_read_cmd, INT340X_THERMAL); int processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16 id, u32 data) { - return send_mbox_write_cmd(pdev, id, data); + int ret; + + mutex_lock(&mbox_lock); + ret = send_mbox_write_cmd(pdev, id, data); + mutex_unlock(&mbox_lock); + + return ret; } EXPORT_SYMBOL_NS_GPL(processor_thermal_send_mbox_write_cmd, INT340X_THERMAL); +#define MBOX_CAMARILLO_RD_INTR_CONFIG 0x1E +#define MBOX_CAMARILLO_WR_INTR_CONFIG 0x1F +#define WLT_TW_MASK GENMASK_ULL(30, 24) +#define SOC_PREDICTION_TW_SHIFT 24 + +int processor_thermal_mbox_interrupt_config(struct pci_dev *pdev, bool enable, + int enable_bit, int time_window) +{ + u64 data; + int ret; + + if (!pdev) + return -ENODEV; + + mutex_lock(&mbox_lock); + + /* Do read modify write for MBOX_CAMARILLO_RD_INTR_CONFIG */ + + ret = send_mbox_read_cmd(pdev, MBOX_CAMARILLO_RD_INTR_CONFIG, &data); + if (ret) { + dev_err(&pdev->dev, "MBOX_CAMARILLO_RD_INTR_CONFIG failed\n"); + goto unlock; + } + + if (time_window >= 0) { + data &= ~WLT_TW_MASK; + + /* Program notification delay */ + data |= (time_window << SOC_PREDICTION_TW_SHIFT); + } + + if (enable) + data |= BIT(enable_bit); + else + data &= ~BIT(enable_bit); + + ret = send_mbox_write_cmd(pdev, MBOX_CAMARILLO_WR_INTR_CONFIG, data); + if (ret) + dev_err(&pdev->dev, "MBOX_CAMARILLO_WR_INTR_CONFIG failed\n"); + +unlock: + mutex_unlock(&mbox_lock); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(processor_thermal_mbox_interrupt_config, INT340X_THERMAL); + MODULE_LICENSE("GPL v2"); From patchwork Tue Jun 20 23:01:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286495 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 347B5EB64D7 for ; Tue, 20 Jun 2023 23:01:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230012AbjFTXB5 (ORCPT ); Tue, 20 Jun 2023 19:01:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53496 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229984AbjFTXB4 (ORCPT ); Tue, 20 Jun 2023 19:01:56 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99E6019B; Tue, 20 Jun 2023 16:01:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687302115; x=1718838115; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CEYJChC6OvSO8x/YfH7LNbtmj//EuKold9s1r0acTp8=; b=fVVErAIbLReqPQ/oFsaLqwL1e5WAIv5rVSLyuZCADy2T4ZiPw4e+XIxk wGvAfpJ+O3IhBYIgIKuZhPT9szxjq96QRV+i0gGMcyRZ5d0HagGFyg5XN CvNmTvR0SFH1Lcz82LT0is5jlqsXnlKwExutbF74scopB9/u4V4pp0QpZ ZfFQhEH7Y9NHVyb0aGVusalNG5UqtXQMtebF3PWAaDLERwsh9g1rwLcfC Y/Tw7EyQwz6WQ16E3Au0ejKHsRvPW/eFoNabwN4Nf8q6EoFnjmii3njbA hqAMl1sJPpqBzvBSyGH6imCmJySn72BApjniRP+pe8Tel8XVZsqLkpCIa A==; X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="340347281" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="340347281" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2023 16:01:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465323" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465323" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:53 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 3/7] thermal: int340x: processor_thermal: Use non MSI interrupts Date: Tue, 20 Jun 2023 16:01:46 -0700 Message-Id: <20230620230150.3068704-4-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org There are issues in using MSI interrupts for processor thermal device. The support is not consistent, across generations. Even in the same generation, there are issue in getting interrupts via MSI. Hence always use legacy PCI interrupts by default, instead of MSI. Add a module param to use of MSI, so that MSI can be still used. Signed-off-by: Srinivas Pandruvada --- .../processor_thermal_device_pci.c | 33 ++++++++++++------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 5a2bcfff0a68..057778f7bece 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -15,6 +15,11 @@ #define DRV_NAME "proc_thermal_pci" +static int msi_enabled; +module_param(msi_enabled, int, 0644); +MODULE_PARM_DESC(msi_enabled, + "Use PCI MSI based interrupts for processor thermal device."); + struct proc_thermal_pci { struct pci_dev *pdev; struct proc_thermal_device *proc_priv; @@ -219,8 +224,6 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ return ret; } - pci_set_master(pdev); - INIT_DELAYED_WORK(&pci_info->work, proc_thermal_threshold_work_fn); ret = proc_thermal_add(&pdev->dev, proc_priv); @@ -248,16 +251,23 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ goto err_ret_mmio; } - /* request and enable interrupt */ - ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); - if (ret < 0) { - dev_err(&pdev->dev, "Failed to allocate vectors!\n"); - goto err_ret_tzone; - } - if (!pdev->msi_enabled && !pdev->msix_enabled) + if (msi_enabled) { + pci_set_master(pdev); + /* request and enable interrupt */ + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to allocate vectors!\n"); + goto err_ret_tzone; + } + if (!pdev->msi_enabled && !pdev->msix_enabled) + irq_flag = IRQF_SHARED; + + irq = pci_irq_vector(pdev, 0); + } else { irq_flag = IRQF_SHARED; + irq = pdev->irq; + } - irq = pci_irq_vector(pdev, 0); ret = devm_request_threaded_irq(&pdev->dev, irq, proc_thermal_irq_handler, NULL, irq_flag, KBUILD_MODNAME, pci_info); @@ -273,7 +283,8 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ return 0; err_free_vectors: - pci_free_irq_vectors(pdev); + if (msi_enabled) + pci_free_irq_vectors(pdev); err_ret_tzone: thermal_zone_device_unregister(pci_info->tzone); err_ret_mmio: From patchwork Tue Jun 20 23:01:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286496 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 E57D7C0015E for ; Tue, 20 Jun 2023 23:01:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230031AbjFTXB6 (ORCPT ); Tue, 20 Jun 2023 19:01:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229989AbjFTXB5 (ORCPT ); Tue, 20 Jun 2023 19:01:57 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C7FB10DA; Tue, 20 Jun 2023 16:01:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687302115; x=1718838115; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aHAH3gbVtLE8GRguVc1WMS2QGhQBERba7NOQ9xfAKEE=; b=k2XToIDEQsCbcvWIVMVqeQNkeQb2BiVmB0TtY7kklFcZePbolA7ST3dK onN47k8dmWQaO7DExDbFcoENqKcxGX8pdoxRd5gyO8cmaYmgL8hDxmbzQ Gz+gyaL8ynGiBeryv9eh7N0A5Rk78BZifJc5H+vKiiaj0EingyV/4anIm eTHbvGFtNCNLyynEPAJbFYdn26gvTOL3P+cDxxzQPCn9iCH3s1VxKesDU B1Y/Z2pi3vuaiFwSqGg8K79NqHT9HkiiD9joV349sHYg0HDb05oWQoqMR SQXgnIHvo5Ngihf4zKs5Vha9nxEerQmb11oJvjO2dKPnJG780fGfbYE3c A==; X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="340347288" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="340347288" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2023 16:01:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465328" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465328" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:54 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 4/7] thermal/drivers/int340x: Remove PROC_THERMAL_FEATURE_WLT_REQ for Meteor Lake Date: Tue, 20 Jun 2023 16:01:47 -0700 Message-Id: <20230620230150.3068704-5-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Meteor Lake processor supports firmware hints for predicting workload type. So, remove support for passing workload hints to the firmware. Signed-off-by: Srinivas Pandruvada Reviewed-by: Zhang Rui --- .../intel/int340x_thermal/processor_thermal_device_pci.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 057778f7bece..3dab3dbdbbc6 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -364,8 +364,7 @@ static const struct pci_device_id proc_thermal_pci_ids[] = { { PCI_DEVICE_DATA(INTEL, ADL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL, PROC_THERMAL_FEATURE_RAPL | - PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ | - PROC_THERMAL_FEATURE_DLVR) }, + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_DLVR) }, { PCI_DEVICE_DATA(INTEL, RPL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, { }, From patchwork Tue Jun 20 23:01:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286498 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 15D48EB64D7 for ; Tue, 20 Jun 2023 23:02:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230062AbjFTXCA (ORCPT ); Tue, 20 Jun 2023 19:02:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230010AbjFTXB5 (ORCPT ); Tue, 20 Jun 2023 19:01:57 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EFDB10F4; Tue, 20 Jun 2023 16:01:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687302115; x=1718838115; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=33VAMB7NK7lelfQM36j1lNsCyczwY2c4/0rCGB/Y1Is=; b=k5kxrj/yhVRF24/7XULEcJ1XEces0Cb6qHD+DI2h9FE5CAvuLsjEcjBK wTvgWkDzCgHkW0+yDxNv9uZWpq5pLnSPMMPsCWzGNSwiQpNGNOTtKv4DL 6hei/KWQ6bUjJBj01ntySOEfw/7HUiNu1RhkbTmz/SJAHnzWmP0f2CorK lVBD7rJJn44WPt5tRKPJpr3mVX4hQ+jyzLaSnvMgdrZR9bA546gTm5mO1 nShW+U2lfUZzcAb/yMQY0zZ2CeSihIgnByyKMJakwUIpoZlprHk3PkNQq Avbj1a1wX0HucG4E1oZv/+HdwEvNvglczAWY7EcT8ZySUgJoQlhFYh5lQ Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="340347296" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="340347296" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2023 16:01:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465332" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465332" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:54 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 5/7] thermal: int340x: processor_thermal: Add workload type hint Date: Tue, 20 Jun 2023 16:01:48 -0700 Message-Id: <20230620230150.3068704-6-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Prior to Meteor Lake processor generation, user space can pass workload type request to the firmware. Then firmware can optimize power based on workload type. User space also uses workload type request to implement its own heuristics. The firmware in Meteor Lake processor generation is capable of predicting workload type without user space. To avoid duplicate processing, the user space can read the same workload type hint from the firmware instead of implementing its own prediction. This workload hint is passed from the firmware via a MMIO offset 0x5B18. Before receiving the hint, firmware needs to be configured via a mailbox command. This mailbox command enables interrupt and notification delay. This notification delay can be changed from user space. This workload hint is passed via sysfs attribute group "workload_hint". This attribute group contains following attributes: workload_type_enable: Enables/disables workload type hints from the firmware. notification_delay_ms: Notification delay in milli seconds. workload_type_index: The current workload type index predicted by the firmware. Refer to the documentation for meaning of each index value. Signed-off-by: Srinivas Pandruvada --- .../driver-api/thermal/intel_dptf.rst | 38 +++ .../thermal/intel/int340x_thermal/Makefile | 1 + .../processor_thermal_device.c | 9 + .../processor_thermal_device.h | 7 + .../processor_thermal_device_pci.c | 3 +- .../processor_thermal_wlt_hint.c | 239 ++++++++++++++++++ 6 files changed, 296 insertions(+), 1 deletion(-) create mode 100644 drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_hint.c diff --git a/Documentation/driver-api/thermal/intel_dptf.rst b/Documentation/driver-api/thermal/intel_dptf.rst index 9ab4316322a1..5cba02c4c308 100644 --- a/Documentation/driver-api/thermal/intel_dptf.rst +++ b/Documentation/driver-api/thermal/intel_dptf.rst @@ -315,3 +315,41 @@ DPTF Fan Control ---------------------------------------- Refer to Documentation/admin-guide/acpi/fan_performance_states.rst + +Workload Type Hints +---------------------------------------- + +The firmware in Meteor Lake processor generation is capable of predicting +workload type and pass hints to OS. These hints can be enabled and read +from user space. User space can poll attribute "workload_type_index" for +the current hint or can get notification when this attribute is changed. + +file:`/sys/bus/pci/devices/0000:00:04.0/workload_hint/` + +``workload_hint_enable`` (RW) + Enable firmware to send workload type hints from user space. + +``notification_delay_ms`` (RW) + Minimum delay in milli seconds before firmware will notify OS. + +``workload_type_index`` (RO) + Predicted workload type index. + The index and description on Meteor Lake processor: + + 0 - Idle: System performs no tasks, power and residency are consistently + low for long periods of time. + + 1 – Battery Life: Power is relatively low, but the processor may still be + actively performing a task, such as video playback for a long period of + time. + + 2 – Sustained: Power level that is relatively high for a long period + of time, with very few to no periods of idleness, which will eventually + exhaust RAPL Power Limit 1 and 2. + + 3 – Bursty: Consumes a relatively constant average amount of power, + however, bursts of activity interrupt periods of relative idleness. + The bursts are relatively short and spaced with relative idleness + which typically do not exhaust RAPL Power Limit 1. + + 4 – Unknown: Can't classify. diff --git a/drivers/thermal/intel/int340x_thermal/Makefile b/drivers/thermal/intel/int340x_thermal/Makefile index 76e053e541f0..ccd0fdd23161 100644 --- a/drivers/thermal/intel/int340x_thermal/Makefile +++ b/drivers/thermal/intel/int340x_thermal/Makefile @@ -11,5 +11,6 @@ obj-$(CONFIG_PROC_THERMAL_MMIO_RAPL) += processor_thermal_rapl.o obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_rfim.o obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_mbox.o obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_wlt_req.o +obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_wlt_hint.o obj-$(CONFIG_INT3406_THERMAL) += int3406_thermal.o obj-$(CONFIG_ACPI_THERMAL_REL) += acpi_thermal_rel.o diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c index 48f6c72b05f6..127deefbb633 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c @@ -352,6 +352,12 @@ int proc_thermal_mmio_add(struct pci_dev *pdev, dev_err(&pdev->dev, "failed to add MBOX interface\n"); goto err_rem_rfim; } + } else if (feature_mask & PROC_THERMAL_FEATURE_WLT_HINT) { + ret = proc_thermal_wlt_hint_add(pdev, proc_priv); + if (ret) { + dev_err(&pdev->dev, "failed to add WLT Hint\n"); + goto err_rem_rfim; + } } return 0; @@ -376,10 +382,13 @@ void proc_thermal_mmio_remove(struct pci_dev *pdev, struct proc_thermal_device * if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WLT_REQ) proc_thermal_wlt_req_remove(pdev); + else if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WLT_HINT) + proc_thermal_wlt_hint_remove(pdev); } EXPORT_SYMBOL_GPL(proc_thermal_mmio_remove); MODULE_IMPORT_NS(INTEL_TCC); +MODULE_IMPORT_NS(INT340X_THERMAL); MODULE_AUTHOR("Srinivas Pandruvada "); MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h index defc919cb020..bc056712f728 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h @@ -61,6 +61,7 @@ struct rapl_mmio_regs { #define PROC_THERMAL_FEATURE_DVFS 0x04 #define PROC_THERMAL_FEATURE_WLT_REQ 0x08 #define PROC_THERMAL_FEATURE_DLVR 0x10 +#define PROC_THERMAL_FEATURE_WLT_HINT 0x20 #if IS_ENABLED(CONFIG_PROC_THERMAL_MMIO_RAPL) int proc_thermal_rapl_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); @@ -95,6 +96,12 @@ int processor_thermal_mbox_interrupt_config(struct pci_dev *pdev, bool enable, i int time_window); int proc_thermal_add(struct device *dev, struct proc_thermal_device *priv); void proc_thermal_remove(struct proc_thermal_device *proc_priv); + +int proc_thermal_wlt_hint_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); +void proc_thermal_wlt_hint_remove(struct pci_dev *pdev); +void proc_thermal_wlt_intr_callback(struct pci_dev *pdev, struct proc_thermal_device *proc_priv); +bool proc_thermal_check_wlt_intr(struct proc_thermal_device *proc_priv); + int proc_thermal_suspend(struct device *dev); int proc_thermal_resume(struct device *dev); int proc_thermal_mmio_add(struct pci_dev *pdev, diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 3dab3dbdbbc6..edddebedf42e 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -364,7 +364,8 @@ static const struct pci_device_id proc_thermal_pci_ids[] = { { PCI_DEVICE_DATA(INTEL, ADL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL, PROC_THERMAL_FEATURE_RAPL | - PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_DLVR) }, + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_DLVR | + PROC_THERMAL_FEATURE_WLT_HINT) }, { PCI_DEVICE_DATA(INTEL, RPL_THERMAL, PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_WLT_REQ) }, { }, diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_hint.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_hint.c new file mode 100644 index 000000000000..6b72ba665167 --- /dev/null +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_hint.c @@ -0,0 +1,239 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * processor thermal device for reading Workload type hints + * from the user space. The hints are provided by the firmware. + * + * Operation: + * When user space enables workload type prediction: + * - Use mailbox to configure: + * Configure notification delay + * Enable processor thermal device interrupt + * - The predicted workload type can be read from MMIO: + * Offset 0x5B18 shows if there was an interrupt + * active for change in workload type and also + * predicted workload type. + * + * Two interface function are provided to call when there is a + * thermal device interrupt: + * - proc_thermal_check_wlt_intr(): Check if the is interrupt for + * change in workload type. + * - proc_thermal_wlt_intr_callback(): Callback for interrupt + * under thread context to process. This involves sending + * notification to user space that there is a change in workload + * type. + * + * Copyright (c) 2020-2023, Intel Corporation. + */ + +#include +#include +#include "processor_thermal_device.h" + +#define SOC_WLT_RES_INT_STATUS_OFF 0x5B18 +#define SOC_WLT_MASK GENMASK_ULL(47, 40) + +#define SOC_WLT_PREDICTION_INT_ENABLE_BIT 23 + +#define SOC_WLT_PREDICTION_INT_ACTIVE BIT(2) + +/* + * Closest possible to 1 Second is 1024 ms with programmed time delay + * of 0x0A. + */ +static u8 notify_delay = 0x0A; +static u16 notify_delay_ms = 1024; + +/* Show current predicted workload type index */ +static ssize_t workload_type_index_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct proc_thermal_device *proc_priv; + struct pci_dev *pdev = to_pci_dev(dev); + u64 status = 0; + int wlt; + + proc_priv = pci_get_drvdata(pdev); + + status = readq(proc_priv->mmio_base + SOC_WLT_RES_INT_STATUS_OFF); + wlt = FIELD_GET(SOC_WLT_MASK, status); + + return sysfs_emit(buf, "%d\n", wlt); +} + +static DEVICE_ATTR_RO(workload_type_index); + +static u8 wlt_enable; + +static ssize_t workload_hint_enable_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "%d\n", wlt_enable); +} + +/* + * Enable workload type prediction by writing 1 to enable, 0 to + * disable + */ +static ssize_t workload_hint_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct pci_dev *pdev = to_pci_dev(dev); + u8 mode; + + if (kstrtou8(buf, 10, &mode) || mode > 1) + return -EINVAL; + + if (mode) { + int ret; + + ret = processor_thermal_mbox_interrupt_config(pdev, true, + SOC_WLT_PREDICTION_INT_ENABLE_BIT, + notify_delay); + if (ret) + return ret; + } else { + processor_thermal_mbox_interrupt_config(pdev, false, + SOC_WLT_PREDICTION_INT_ENABLE_BIT, 0); + } + + wlt_enable = mode; + + return size; +} + +static DEVICE_ATTR_RW(workload_hint_enable); + +static ssize_t notification_delay_ms_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "%u\n", notify_delay_ms); +} + +static ssize_t notification_delay_ms_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct pci_dev *pdev = to_pci_dev(dev); + u16 new_tw; + int ret; + + /* + * Time window register value: + * Formula: (1 + x/4) * power(2,y) + * x = 2 msbs, that is [30:29] y = 5 [28:24] + * in INTR_CONFIG register. + * The result will be in milli seconds. + * Here, just keep x = 0, and just change y. + * First round up the user value to power of 2 and + * then take log2, to get "y" value to program. + */ + ret = kstrtou16(buf, 10, &new_tw); + if (ret) + return ret; + + if (new_tw) { + u8 tm; + + new_tw = roundup_pow_of_two(new_tw); + tm = ilog2(new_tw); + if (tm > 31) + return -EINVAL; + + ret = processor_thermal_mbox_interrupt_config(pdev, true, + SOC_WLT_PREDICTION_INT_ENABLE_BIT, + tm); + if (ret) + return ret; + + notify_delay = tm; + notify_delay_ms = new_tw; + } else { + ret = processor_thermal_mbox_interrupt_config(pdev, false, + SOC_WLT_PREDICTION_INT_ENABLE_BIT, + notify_delay); + if (ret) + return ret; + } + + return size; +} + +static DEVICE_ATTR_RW(notification_delay_ms); + +static struct attribute *workload_hint_attrs[] = { + &dev_attr_workload_type_index.attr, + &dev_attr_workload_hint_enable.attr, + &dev_attr_notification_delay_ms.attr, + NULL +}; + +static const struct attribute_group workload_hint_attribute_group = { + .attrs = workload_hint_attrs, + .name = "workload_hint" +}; + +/* + * Callback to check if interrupt for prediction is active. + * Caution: Called from interrupt context. + */ +bool proc_thermal_check_wlt_intr(struct proc_thermal_device *proc_priv) +{ + u64 int_status; + + int_status = readq(proc_priv->mmio_base + SOC_WLT_RES_INT_STATUS_OFF); + if (int_status & SOC_WLT_PREDICTION_INT_ACTIVE) + return true; + + return false; +} +EXPORT_SYMBOL_NS_GPL(proc_thermal_check_wlt_intr, INT340X_THERMAL); + +/* Callback to notify user space */ +void proc_thermal_wlt_intr_callback(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) +{ + u64 status; + + status = readq(proc_priv->mmio_base + SOC_WLT_RES_INT_STATUS_OFF); + if (status & SOC_WLT_PREDICTION_INT_ACTIVE) { + writeq(status & ~SOC_WLT_PREDICTION_INT_ACTIVE, + proc_priv->mmio_base + SOC_WLT_RES_INT_STATUS_OFF); + sysfs_notify(&pdev->dev.kobj, "workload_hint", "workload_type_index"); + } +} +EXPORT_SYMBOL_NS_GPL(proc_thermal_wlt_intr_callback, INT340X_THERMAL); + +static bool workload_hint_created; + +int proc_thermal_wlt_hint_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) +{ + int ret; + + ret = sysfs_create_group(&pdev->dev.kobj, &workload_hint_attribute_group); + if (ret) + return ret; + + workload_hint_created = true; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(proc_thermal_wlt_hint_add, INT340X_THERMAL); + +void proc_thermal_wlt_hint_remove(struct pci_dev *pdev) +{ + processor_thermal_mbox_interrupt_config(pdev, false, + SOC_WLT_PREDICTION_INT_ENABLE_BIT, + notify_delay); + + if (workload_hint_created) + sysfs_remove_group(&pdev->dev.kobj, &workload_hint_attribute_group); + + workload_hint_created = false; +} +EXPORT_SYMBOL_NS_GPL(proc_thermal_wlt_hint_remove, INT340X_THERMAL); + +MODULE_IMPORT_NS(INT340X_THERMAL); +MODULE_LICENSE("GPL"); From patchwork Tue Jun 20 23:01:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286497 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 A0944EB64DD for ; Tue, 20 Jun 2023 23:02:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230042AbjFTXB7 (ORCPT ); Tue, 20 Jun 2023 19:01:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229999AbjFTXB5 (ORCPT ); Tue, 20 Jun 2023 19:01:57 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 887BECD; 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a="1044465338" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465338" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:54 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 6/7] thermal/drivers/int340x: Support workload hint interrupts Date: Tue, 20 Jun 2023 16:01:49 -0700 Message-Id: <20230620230150.3068704-7-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On thermal device interrupt, if the interrupt is generated for passing workload hint, call the callback to pass notification to the user space. First call proc_thermal_check_wlt_intr() to check interrupt, if this callback returns true, wake IRQ thread. Call proc_thermal_wlt_intr_callback() to notify user space. While here remove function pkg_thermal_schedule_work() and move the processing to the caller. The function pkg_thermal_schedule_work() just called schedule_delayed_work(). Signed-off-by: Srinivas Pandruvada --- .../processor_thermal_device_pci.c | 33 ++++++++++++++----- 1 file changed, 24 insertions(+), 9 deletions(-) diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index edddebedf42e..7fa5c3d459bd 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -115,27 +115,40 @@ static void proc_thermal_threshold_work_fn(struct work_struct *work) proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 1); } -static void pkg_thermal_schedule_work(struct delayed_work *work) +static irqreturn_t proc_thermal_irq_thread_handler(int irq, void *devid) { - unsigned long ms = msecs_to_jiffies(notify_delay_ms); + struct proc_thermal_pci *pci_info = devid; + + proc_thermal_wlt_intr_callback(pci_info->pdev, pci_info->proc_priv); - schedule_delayed_work(work, ms); + return IRQ_HANDLED; } static irqreturn_t proc_thermal_irq_handler(int irq, void *devid) { struct proc_thermal_pci *pci_info = devid; + struct proc_thermal_device *proc_priv; + int ret = IRQ_HANDLED; u32 status; + proc_priv = pci_info->proc_priv; + + if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WLT_HINT) { + if (proc_thermal_check_wlt_intr(pci_info->proc_priv)) + ret = IRQ_WAKE_THREAD; + } + proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_INT_STATUS_0, &status); + if (status) { + unsigned long ms = msecs_to_jiffies(notify_delay_ms); - /* Disable enable interrupt flag */ - proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 0); + /* Disable enable interrupt flag */ + proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 0); + schedule_delayed_work(&pci_info->work, ms); + } pci_write_config_byte(pci_info->pdev, 0xdc, 0x01); - pkg_thermal_schedule_work(&pci_info->work); - - return IRQ_HANDLED; + return ret; } static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) @@ -269,7 +282,7 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ } ret = devm_request_threaded_irq(&pdev->dev, irq, - proc_thermal_irq_handler, NULL, + proc_thermal_irq_handler, proc_thermal_irq_thread_handler, irq_flag, KBUILD_MODNAME, pci_info); if (ret) { dev_err(&pdev->dev, "Request IRQ %d failed\n", pdev->irq); @@ -383,6 +396,8 @@ static struct pci_driver proc_thermal_pci_driver = { module_pci_driver(proc_thermal_pci_driver); +MODULE_IMPORT_NS(INT340X_THERMAL); + MODULE_AUTHOR("Srinivas Pandruvada "); MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); MODULE_LICENSE("GPL v2"); From patchwork Tue Jun 20 23:01:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 13286499 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 0BBE8EB64D7 for ; Tue, 20 Jun 2023 23:02:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230089AbjFTXCC (ORCPT ); Tue, 20 Jun 2023 19:02:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230027AbjFTXB6 (ORCPT ); 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20 Jun 2023 16:01:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10747"; a="1044465342" X-IronPort-AV: E=Sophos;i="6.00,258,1681196400"; d="scan'208";a="1044465342" Received: from spandruv-desk.jf.intel.com ([10.54.75.8]) by fmsmga005.fm.intel.com with ESMTP; 20 Jun 2023 16:01:55 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, rui.zhang@intel.com, daniel.lezcano@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 7/7] selftests/thermel/intel: Add test to read workload hint Date: Tue, 20 Jun 2023 16:01:50 -0700 Message-Id: <20230620230150.3068704-8-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> References: <20230620230150.3068704-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Some SoCs have in built firmware support to classify current running workload and pass to OS for making power management decisions. This test program waits for notification of workload type change and prints. This program can be used to test this feature and also allows other user space programs to use as a reference. Signed-off-by: Srinivas Pandruvada --- .../testing/selftests/thermal/intel/Makefile | 16 +++ .../thermal/intel/workload_hint_test.c | 114 ++++++++++++++++++ 2 files changed, 130 insertions(+) create mode 100644 tools/testing/selftests/thermal/intel/Makefile create mode 100644 tools/testing/selftests/thermal/intel/workload_hint_test.c diff --git a/tools/testing/selftests/thermal/intel/Makefile b/tools/testing/selftests/thermal/intel/Makefile new file mode 100644 index 000000000000..02459e271ef7 --- /dev/null +++ b/tools/testing/selftests/thermal/intel/Makefile @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: GPL-2.0 +ifndef CROSS_COMPILE +uname_M := $(shell uname -m 2>/dev/null || echo not) +ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/) + +ifeq ($(ARCH),x86) +TEST_PROGS := workload_hint_test + +all: $(TEST_PROGS) + +include ../../lib.mk + +clean: + rm -fr $(TEST_PROGS) +endif +endif diff --git a/tools/testing/selftests/thermal/intel/workload_hint_test.c b/tools/testing/selftests/thermal/intel/workload_hint_test.c new file mode 100644 index 000000000000..69a48a8ccbb4 --- /dev/null +++ b/tools/testing/selftests/thermal/intel/workload_hint_test.c @@ -0,0 +1,114 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include + +#define WORKLOAD_NOTIFICATION_DELAY_ATTRIBUTE "/sys/bus/pci/devices/0000:00:04.0/workload_hint/notification_delay_ms" +#define WORKLOAD_ENABLE_ATTRIBUTE "/sys/bus/pci/devices/0000:00:04.0/workload_hint/workload_hint_enable" +#define WORKLOAD_TYPE_INDEX_ATTRIBUTE "/sys/bus/pci/devices/0000:00:04.0/workload_hint/workload_type_index" + +static const char * const workload_types[] = { + "idle", + "battery_life", + "sustained", + "bursty", + NULL +}; + +#define WORKLOAD_TYPE_MAX_INDEX 3 + +int main(int argc, char **argv) { + struct pollfd ufd; + char index_str[4]; + int fd, ret, index; + int delay = 0; + + if (argc > 1) { + char delay_str[64]; + + sscanf(argv[1], "%d", &delay); + printf("Setting notification delay to %d ms\n", delay); + + if (delay < 0) + exit(1); + + sprintf(delay_str, "%s\n", argv[1]); + + if ((fd = open(WORKLOAD_NOTIFICATION_DELAY_ATTRIBUTE, O_RDWR)) < 0) { + perror("Unable to open workload notification delay\n"); + exit(1); + } + + if (write(fd, delay_str, strlen(delay_str)) < 0) { + perror("Can't set delay\n"); + exit(1); + } + + close(fd); + + } + + /* Enable feature via sysfs knob */ + if ((fd = open(WORKLOAD_ENABLE_ATTRIBUTE, O_RDWR)) < 0) { + perror("Unable to open workload type feature enable file\n"); + exit(1); + } + + if (write(fd, "1\n", 2) < 0) { + perror("Can' enable workload hints\n"); + exit(1); + } + + close(fd); + + while (1) { + if ((fd = open(WORKLOAD_TYPE_INDEX_ATTRIBUTE, O_RDONLY)) < 0) { + perror("Unable to open workload type file\n"); + exit(1); + } + + if ((lseek(fd, 0L, SEEK_SET)) < 0) { + fprintf(stderr, "Failed to set pointer to beginning\n"); + exit(1); + } + + if (read(fd, index_str, sizeof(index_str)) < 0) { + fprintf(stderr, "Failed to read from:%s\n", + WORKLOAD_TYPE_INDEX_ATTRIBUTE); + exit(1); + } + + ufd.fd = fd; + ufd.events = POLLPRI; + + if ((ret = poll(&ufd, 1, -1)) < 0) { + perror("poll error"); + exit(1); + } else if (ret == 0) { + printf("Poll Timeout\n"); + } else { + if ((lseek(fd, 0L, SEEK_SET)) < 0) { + fprintf(stderr, "Failed to set pointer to beginning\n"); + exit(1); + } + + if (read(fd, index_str, sizeof(index_str)) < 0) { + exit(0); + } + + sscanf(index_str, "%d", &index); + if (index > WORKLOAD_TYPE_MAX_INDEX) + printf("Invalid workload type index\n"); + else + printf("workload type:%s\n", workload_types[index]); + } + + close(fd); + } +}