From patchwork Thu Feb 18 19:03:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gustavo Pimentel X-Patchwork-Id: 12094039 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 62ED0C433DB for ; Thu, 18 Feb 2021 19:11:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 155FE64EC0 for ; Thu, 18 Feb 2021 19:11:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229893AbhBRTLS (ORCPT ); Thu, 18 Feb 2021 14:11:18 -0500 Received: from smtprelay-out1.synopsys.com ([149.117.73.133]:33074 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233364AbhBRTFl (ORCPT ); Thu, 18 Feb 2021 14:05:41 -0500 Received: from mailhost.synopsys.com (mdc-mailhost2.synopsys.com [10.225.0.210]) (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 F3BE64014D; Thu, 18 Feb 2021 19:04:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1613675056; bh=LMVv0cLJ3D0bpe2oO+Ggm1bTc1v5DBYdH82tYjfbfQE=; h=From:To:Cc:Subject:Date:From; b=EbkxfAIOMBYv4ON8ujSO9gV2kfzulP4U/xQy5ruXVCNByUi6qwKMAGThm4O8QJH3T hoNm9i8rU5Ljx4e+Z2GCVR/4ukOxUXUO6i0grYuF4QOvNxZqJcg8g4GbkaA90svdV3 m9mzqk6wrY2lZV4oU4Fect+xijdqC6wT9uHalrGz06QwfYiZUwMoeqyooQNVFMjFJA 4bRtkNAw2P5Qcs17NQT0FStHRxj1dcsWbFUAz4zbNC9nI3K/M7DCmj579W2ibcisQD XePgfYuktYNS8sElQTTKZzPCRWCTbuJGIhHCDd3GWOLn3IfJuFhqZE46mA5gOKOzRG ygSaWWDzKB4XA== Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by mailhost.synopsys.com (Postfix) with ESMTP id 3759AA005D; Thu, 18 Feb 2021 19:04:14 +0000 (UTC) X-SNPS-Relay: synopsys.com From: Gustavo Pimentel To: dmaengine@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Vinod Koul , Dan Williams , Bjorn Helgaas , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Lukas Wunner Cc: Gustavo Pimentel Subject: [PATCH v7 00/15] dmaengine: dw-edma: HDMA support Date: Thu, 18 Feb 2021 20:03:54 +0100 Message-Id: X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@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 V5: Rework driver accordingly to Bjorn Helgaas's feedback V6: Rework driver accordingly to Krzysztof Wilczyński's feedback V7: Rework driver accordingly to Bjorn Helgaas's feedback Rebased patches on top of Bjorn Helgaas next branch due to the support of PCI_VNDR_* defines Cc: dmaengine@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Vinod Koul Cc: Dan Williams Cc: Bjorn Helgaas Cc: Krzysztof Wilczyński Cc: Lukas Wunner 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 check 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 | 277 +++++++++++++++++++++------- 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 | 30 ++++ include/linux/pci.h | 1 + 10 files changed, 842 insertions(+), 355 deletions(-)