Message ID | 20231013112004.4239-1-ilpo.jarvinen@linux.intel.com |
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[2620:137:e000::3:6]) by mx.google.com with ESMTPS id mp9-20020a17090b190900b0027766994586si4174863pjb.71.2023.10.13.04.21.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 04:21:02 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) client-ip=2620:137:e000::3:6; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=a4PTrsrt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by pete.vger.email (Postfix) with ESMTP id 3A2B0808BE4F; Fri, 13 Oct 2023 04:20:32 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at pete.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230458AbjJMLUT (ORCPT <rfc822;rua109.linux@gmail.com> + 19 others); Fri, 13 Oct 2023 07:20:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230014AbjJMLUR (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Fri, 13 Oct 2023 07:20:17 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DA0CB7; Fri, 13 Oct 2023 04:20:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697196016; x=1728732016; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=v35k94BNYjpR/g40oHphqcfXoVx02xvQQJ6kG01eG9k=; b=a4PTrsrt8qn5KwHhqE/NikvJZMJU8y6t86fegZq13wNiG+/HeyWF5g5m crmXkini5e7GDqpcxGw4k7+GcWAtX7JNWSPKdE+d30LlVhUgZAQx+2wr+ J5KBpVWWKd50k6YkRaKvnIrmSOl9gzbQnkpRJj6HI+nsUXKQBcjAr32Zq 2MS4/Zb+lBhLDoDktLqT01eHG31cv8uSmgXKhOgjvaRWaqNWYSz/O2cIj afPF0JgJKGtV/gcPxaYN7mL1WVgo7LqsQr9E0RJpCQN3HKvCj9nH9Qxa8 B7/OHvs6AaZ7PHEZ7XWHSYUlD3h1X2tPw8eCfhu3Yfl4Kx626s25R6ttl g==; X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="416213486" X-IronPort-AV: E=Sophos;i="6.03,222,1694761200"; d="scan'208";a="416213486" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2023 04:20:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="754672560" X-IronPort-AV: E=Sophos;i="6.03,222,1694761200"; d="scan'208";a="754672560" Received: from rhaeussl-mobl.ger.corp.intel.com (HELO localhost) ([10.252.58.47]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2023 04:20:12 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com> To: linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= <kw@linux.com>, Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: linux-kernel@vger.kernel.org, =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com> Subject: [PATCH 0/2] PCI/DPC: Improve register field accessing Date: Fri, 13 Oct 2023 14:20:02 +0300 Message-Id: <20231013112004.4239-1-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Fri, 13 Oct 2023 04:20:32 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779639058265951165 X-GMAIL-MSGID: 1779639058265951165 |
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PCI/DPC: Improve register field accessing
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Message
Ilpo Järvinen
Oct. 13, 2023, 11:20 a.m. UTC
This an alternative approach to the patch in: https://lore.kernel.org/linux-pci/20231010204436.1000644-7-helgaas@kernel.org/ It adds names to all the reason literals too (which makes it incompatible with FIELD_GET() for the reason and ext_reason). When the reasons are named instead of literals, it's very easy to understand the code just by reading it (no need to lookup the meaning of those numbers from spec or otherwise). Also 0xfff4 the other patch missed is converted here. Just let me know if I should, for example, base the additional changes on top of that other change. Ilpo Järvinen (2): PCI: Add PCI_EXP_DPC_* field details PCI/DPC: Use defines with register fields drivers/pci/pcie/dpc.c | 39 +++++++++++++++++++++-------------- include/uapi/linux/pci_regs.h | 7 +++++++ 2 files changed, 31 insertions(+), 15 deletions(-)