From patchwork Wed Feb 3 21:57:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gustavo Pimentel X-Patchwork-Id: 12065461 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95D6CC433E9 for ; Wed, 3 Feb 2021 21:59:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4505164F6B for ; Wed, 3 Feb 2021 21:59:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232591AbhBCV7W (ORCPT ); Wed, 3 Feb 2021 16:59:22 -0500 Received: from smtprelay-out1.synopsys.com ([149.117.87.133]:52188 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232549AbhBCV7Q (ORCPT ); Wed, 3 Feb 2021 16:59:16 -0500 Received: from mailhost.synopsys.com (mdc-mailhost1.synopsys.com [10.225.0.209]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 806C4C0111; Wed, 3 Feb 2021 21:58:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1612389495; bh=21k8tX4RGiOVgJbGOCzP5GHVanYEIotdSyZRgKlTQls=; h=From:To:Cc:Subject:Date:From; b=lzZjnHn9ALv3nd81X9ahGCxzacxy7564skkU3NRi2IrsdnEEv5IMOOOncYxGzjOcw VW1fMjiYCG25Nw/Arj9ksA4Mhq4H5JO8qkwIghNGPPIhot+ZxXMI1ROM/RMw/xEomc la6+0G9d2xAWBA0GbNq/OZfU5deaUmfnzQjPBiR9stkWiNvNcyJK0mkiMYWMyBZYZQ NdOC4mPlQvkmRnEtCkqLDsJaCnFwP4csZffcfmx9O8oUkt/lihj39/aGjt+3aKAMgU 7gH0YOfRguoi5rei+SEgZ4um1obupB4W3wtacnzXwHuCuMp3XJ0xwPXYrcUM1+Y1bj +euvCwwaanO4A== Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by mailhost.synopsys.com (Postfix) with ESMTP id EC22AA0249; Wed, 3 Feb 2021 21:58:13 +0000 (UTC) X-SNPS-Relay: synopsys.com From: Gustavo Pimentel To: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, Vinod Koul , Dan Williams , Bjorn Helgaas Cc: Gustavo Pimentel Subject: [PATCH v4 00/15] dmaengine: dw-edma: HDMA support Date: Wed, 3 Feb 2021 22:57:51 +0100 Message-Id: X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org This patch series adds the HDMA support, as long the IP design has set the compatible register map parameter, which allows compatibility at some degree for the existing Synopsys DesignWare eDMA driver that is already available on the Kernel. The HDMA "Hyper-DMA" IP is an enhancement of the eDMA "embedded-DMA" IP. This new improvement comes with a PCI DVSEC that allows to the driver recognize and switch behavior if it's an eDMA or an HDMA, becoming retrocompatible, in the absence of this DVSEC, the driver will assume that is an eDMA IP. It also adds the interleaved support, since it will be similar to the current scatter-gather implementation. As well fixes/improves some abnormal behaviors not detected before, such as: - crash on loading/unloading driver - memory space definition for the data area and for the linked list space - scatter-gather address calculation on 32 bits platforms - minor comment and variable reordering Changes: V2: Applied changes based on Bjorn Helgaas' review Rebased patches on top of v5.11-rc1 version V3: Applied changes based on Lukas Wunner' review V4: Fix a typo detected by kernel test robot Cc: Vinod Koul Cc: Dan Williams Cc: Bjorn Helgaas Cc: dmaengine@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Gustavo Pimentel (15): dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures dmaengine: dw-edma: Fix comments offset characters' alignment dmaengine: dw-edma: Add support for the HDMA feature PCI: Add pci_find_vsec_capability() to find a specific VSEC dmaengine: dw-edma: Add PCIe VSEC data retrieval support dmaengine: dw-edma: Add device_prep_interleave_dma() support dmaengine: dw-edma: Improve number of channels check dmaengine: dw-edma: Reorder variables to keep consistency dmaengine: dw-edma: Improve the linked list and data blocks definition dmaengine: dw-edma: Change linked list and data blocks offset and sizes dmaengine: dw-edma: Move struct dentry variable from static definition into dw_edma struct dmaengine: dw-edma: Fix crash on loading/unloading driver dmaengine: dw-edma: Change DMA abreviation from lower into upper case dmaengine: dw-edma: Revert fix scatter-gather address calculation dmaengine: dw-edma: Add pcim_iomap_table return checker drivers/dma/dw-edma/dw-edma-core.c | 178 +++++++++++------- drivers/dma/dw-edma/dw-edma-core.h | 37 ++-- drivers/dma/dw-edma/dw-edma-pcie.c | 275 +++++++++++++++++++++------- drivers/dma/dw-edma/dw-edma-v0-core.c | 300 ++++++++++++++++++++++++------- drivers/dma/dw-edma/dw-edma-v0-core.h | 2 +- drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 77 ++++---- drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 4 +- drivers/dma/dw-edma/dw-edma-v0-regs.h | 291 +++++++++++++++++++----------- drivers/pci/pci.c | 34 ++++ include/linux/pci.h | 2 + include/uapi/linux/pci_regs.h | 6 + 11 files changed, 851 insertions(+), 355 deletions(-)