From patchwork Mon Sep 19 23:43:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhi Hou X-Patchwork-Id: 12981146 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 C7981C6FA8B for ; Mon, 19 Sep 2022 23:44:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229781AbiISXoI (ORCPT ); Mon, 19 Sep 2022 19:44:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229640AbiISXoH (ORCPT ); Mon, 19 Sep 2022 19:44:07 -0400 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1anam02on2068.outbound.protection.outlook.com [40.107.96.68]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F2944BD20; Mon, 19 Sep 2022 16:44:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YEb+6RZqm3gaKlDlfWKEjX8Tv/aDqHkUYr2U5AeqOtjCVcYnK8o04qyph9TfTBWZy0Kv5fWVg5xfXzHsBqQMbc47hVwIZRJ8B5KqFwd55ld2sanBmfpdZ+Px2ewYfAA9qT2u4OnpTNZo9tJiH1x+1HsqLyGln9AQAnkebbEmD8s0Hq8UPAtFyp84Iz0Uh66V49vop69kElWPv0AFdsa2iyUsWqrdpf/GpU7K1PR/BAK389B6HUmJmszX4p93Xm6gEDMJU419qKCT48vPfDLiHArIVmC21ex7kKuCwbBIqdk9tciSID7VwHhZYOMy0hYDNGASGdWdE0D6ac7Z4jB9xw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=Ofc9wLdGth2YV8bEqXIn6oEMn6gekFrm5ZfQiIzrTUM=; b=mghB/GozO4vINzksguDPBZ4TiHmqBH/IInMxq51U5txC5XLlBSrVOHDQBnM6U2MfSbpwjhztDZa+Qafk8QTQGB0W3lpPdWXV1i4zNRFCRVaQrKxOzifEkF81SWPjGxEoEl5mWSQ6dDJ/xtxoYSDwbkLEbBFqxiYC3Mp+Ux7MbN551P/oC/kzBZ9jTA3MxhuEZwLBhAZv+mIgfjtLVIP9tv3Tagm0Lwa2A2w8dHYEwSpA4fZeG7VkTwaatinhJzUyxnQYdoI3IxLoj/MDRjEP0g9hY6WOfXZapYb905GZ+fRM+5C3nMzRG3VIXUuvySS04QBPij/NtI+eYiDenHyWfA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Ofc9wLdGth2YV8bEqXIn6oEMn6gekFrm5ZfQiIzrTUM=; b=2+zUiM4VKzBt6cHpR5+09NnuDNtJ8/Id7ZZKQKJw/DdllUjNbXNDs+4mLLZ81+7V0s50YCFJdozaSUzvtEpZ9jdDq+XcZzAg0Kio8S2vD8h/AOf2W3mgEqRh5Cl6LIR6Mp7DKoG1BTFOM4t+MDsPdKzQWFVgBUyWPGhdj595OMw= Received: from MW4P220CA0025.NAMP220.PROD.OUTLOOK.COM (2603:10b6:303:115::30) by DM4PR12MB5263.namprd12.prod.outlook.com (2603:10b6:5:39b::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5632.21; Mon, 19 Sep 2022 23:44:04 +0000 Received: from CO1NAM11FT015.eop-nam11.prod.protection.outlook.com (2603:10b6:303:115:cafe::93) by MW4P220CA0025.outlook.office365.com (2603:10b6:303:115::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5632.15 via Frontend Transport; Mon, 19 Sep 2022 23:44:04 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT015.mail.protection.outlook.com (10.13.175.130) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5632.12 via Frontend Transport; Mon, 19 Sep 2022 23:44:04 +0000 Received: from SATLEXMB05.amd.com (10.181.40.146) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Mon, 19 Sep 2022 18:44:03 -0500 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB05.amd.com (10.181.40.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Mon, 19 Sep 2022 18:44:03 -0500 Received: from xsjlizhih40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.28 via Frontend Transport; Mon, 19 Sep 2022 18:44:02 -0500 From: Lizhi Hou To: , , , CC: Lizhi Hou , , , , Subject: [PATCH V3 XDMA 0/1] xilinx XDMA driver Date: Mon, 19 Sep 2022 16:43:58 -0700 Message-ID: <1663631039-49732-1-git-send-email-lizhi.hou@amd.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT015:EE_|DM4PR12MB5263:EE_ X-MS-Office365-Filtering-Correlation-Id: af7b95c2-4fba-4525-7e5f-08da9a98d5ff X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(136003)(396003)(346002)(376002)(39860400002)(451199015)(46966006)(40470700004)(36840700001)(5660300002)(70586007)(70206006)(4326008)(54906003)(110136005)(86362001)(8936002)(316002)(8676002)(47076005)(426003)(82740400003)(36860700001)(83380400001)(6666004)(41300700001)(40460700003)(966005)(478600001)(2616005)(81166007)(336012)(186003)(356005)(26005)(40480700001)(2906002)(36756003)(82310400005)(44832011)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Sep 2022 23:44:04.0469 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: af7b95c2-4fba-4525-7e5f-08da9a98d5ff X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT015.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5263 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Hello, This V3 of patch series is to provide the platform driver to support the Xilinx XDMA subsystem. The XDMA subsystem is used in conjunction with the PCI Express IP block to provide high performance data transfer between host memory and the card's DMA subsystem. It also provides up to 16 user interrupt wires to user logic that generate interrupts to the host. +-------+ +-------+ +-----------+ PCIe | | | | | | Tx/Rx | | | | AXI | | <=======> | PCIE | <===> | XDMA | <====>| User Logic| | | | | | | +-------+ +-------+ +-----------+ The XDMA has been used for Xilinx Alveo PCIe devices. And it is also integrated into Versal ACAP DMA and Bridge Subsystem. https://www.xilinx.com/products/boards-and-kits/alveo.html https://docs.xilinx.com/r/en-US/pg344-pcie-dma-versal/Introduction-to-the-DMA-and-Bridge-Subsystems The device driver for any FPGA based PCIe device which leverages XDMA can call the standard dmaengine APIs to discover and use the XDMA subsystem without duplicating the XDMA driver code in its own driver. Changes since v2: - Removed tasklet. - Fixed regression bug introduced to V2. - Test Robot warning. Changes since v1: - Moved filling hardware descriptor to xdma_prep_device_sg(). - Changed hardware descriptor enum to "struct xdma_hw_desc". - Minor changes from code review comments. Lizhi Hou (1): dmaengine: xilinx: xdma: add xilinx xdma driver MAINTAINERS | 10 + drivers/dma/Kconfig | 13 + drivers/dma/xilinx/Makefile | 1 + drivers/dma/xilinx/xdma-regs.h | 171 +++++ drivers/dma/xilinx/xdma.c | 965 +++++++++++++++++++++++++ include/linux/platform_data/amd_xdma.h | 34 + 6 files changed, 1194 insertions(+) create mode 100644 drivers/dma/xilinx/xdma-regs.h create mode 100644 drivers/dma/xilinx/xdma.c create mode 100644 include/linux/platform_data/amd_xdma.h