From patchwork Mon Apr 10 03:16:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuai Xue X-Patchwork-Id: 13206081 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 BA1FFC76196 for ; Mon, 10 Apr 2023 03:17:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229562AbjDJDRR (ORCPT ); Sun, 9 Apr 2023 23:17:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229565AbjDJDRO (ORCPT ); Sun, 9 Apr 2023 23:17:14 -0400 Received: from out30-100.freemail.mail.aliyun.com (out30-100.freemail.mail.aliyun.com [115.124.30.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F34230C6; Sun, 9 Apr 2023 20:17:11 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046059;MF=xueshuai@linux.alibaba.com;NM=1;PH=DS;RN=13;SR=0;TI=SMTPD_---0VfeyoBu_1681096626; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0VfeyoBu_1681096626) by smtp.aliyun-inc.com; Mon, 10 Apr 2023 11:17:09 +0800 From: Shuai Xue To: helgaas@kernel.org, yangyicong@huawei.com, will@kernel.org, Jonathan.Cameron@huawei.com Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, rdunlap@infradead.org, robin.murphy@arm.com, mark.rutland@arm.com, baolin.wang@linux.alibaba.com, zhuo.song@linux.alibaba.com, xueshuai@linux.alibaba.com Subject: [PATCH v2 0/3] drivers/perf: add Synopsys DesignWare PCIe PMU driver support Date: Mon, 10 Apr 2023 11:16:59 +0800 Message-Id: <20230410031702.68355-1-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220917121036.14864-1-xueshuai@linux.alibaba.com> References: <20220917121036.14864-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Changes since v1: 1. address comments from Jonathan: - drop marco for PMU name and VSEC version - simplify code with PCI standard marco - simplify code with FIELD_PREP()/FIELD_GET() to replace shift marco - name register filed with single _ instead double - wrap dwc_pcie_pmu_{write}_dword out and drop meaningless snaity check - check vendor id while matching vesc with pci_find_vsec_capability() - remove RP_NUM_MAX and use a list to organize PMU devices for rootports - replace DWC_PCIE_CREATE_BDF with standard PCI_DEVID - comments on riping register together 2. address comments from Bjorn: - rename DWC_PCIE_VSEC_ID to DWC_PCIE_VSEC_RAS_DES_ID - rename cap_pos to ras_des - simplify declare of device_attribute with DEVICE_ATTR_RO - simplify code with PCI standard macro and API like pcie_get_width_cap() - fix some code style problem and typo - drop meaningless snaity check of container_of 3. address comments from Yicong: - use sysfs_emit() to replace sprintf() - simplify iteration of pci device with for_each_pci_dev - pick preferred CPUs on a near die and add comments - unregister PMU drivers only for failed ones - log on behalf PMU device and give more hint - fix some code style problem (Thanks for all comments and they are very valuable to me) This patchset adds the PCIe Performance Monitoring Unit (PMU) driver support for T-Head Yitian 710 SoC chip. Yitian 710 is based on the Synopsys PCI Express Core controller IP which provides statistics feature. Shuai Xue (3): docs: perf: Add description for Synopsys DesignWare PCIe PMU driver drivers/perf: add DesignWare PCIe PMU driver MAINTAINERS: add maintainers for DesignWare PCIe PMU driver .../admin-guide/perf/dwc_pcie_pmu.rst | 61 ++ Documentation/admin-guide/perf/index.rst | 1 + MAINTAINERS | 6 + drivers/perf/Kconfig | 7 + drivers/perf/Makefile | 1 + drivers/perf/dwc_pcie_pmu.c | 877 ++++++++++++++++++ 6 files changed, 953 insertions(+) create mode 100644 Documentation/admin-guide/perf/dwc_pcie_pmu.rst create mode 100644 drivers/perf/dwc_pcie_pmu.c