From patchwork Thu Feb 11 09:12:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gustavo Pimentel X-Patchwork-Id: 1439373 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=synopsys.com header.i=@synopsys.com header.a=rsa-sha256 header.s=mail header.b=fHkDL/OP; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Dbrg43nNKz9sB4 for ; Thu, 11 Feb 2021 20:19:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229895AbhBKJTC (ORCPT ); Thu, 11 Feb 2021 04:19:02 -0500 Received: from smtprelay-out1.synopsys.com ([149.117.87.133]:56762 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230103AbhBKJON (ORCPT ); Thu, 11 Feb 2021 04:14:13 -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 5C08EC00B8; Thu, 11 Feb 2021 09:12:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1613034774; bh=XVY3C5tM44biaeLPnPeGD6yk38dcUlFr4a1J9QvrIv4=; h=From:To:Cc:Subject:Date:From; b=fHkDL/OPWc1PdlaKLb411a7JUM4XgYHY7JVrpi7vZDIwj9HlTihoEjhQmxwavmRWm RRtzlul5Wv35NQQwD1GS4RGbmmUDpMSKEbqCkIvLUl/rTVbgHw5tCT1i+fOtd7OWk9 Z7KDbkgffvwhV4UmjjdWafcHW8+YyF7+ayEcScIsq4jdRAn3B5vmWDcEHe9Xt6j/d/ cqIfOg/Vng8kcxM/Mri5rE6dhe11lX2hnDaV7FAfNnc9aqzlXYXQUSaDToNpvh5oJ2 ZJa7TUcg8UfpvguZy7tqYNXQvNWdavNkfKceIVFI2X1WWDiL+ivLPDBwlA+j4Ze73S rZS1jrhB1YRfw== Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by mailhost.synopsys.com (Postfix) with ESMTP id D1894A0061; Thu, 11 Feb 2021 09:12:52 +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 Cc: Gustavo Pimentel Subject: [PATCH v5 00/15] dmaengine: dw-edma: HDMA support Date: Thu, 11 Feb 2021 10:12:33 +0100 Message-Id: X-Mailer: git-send-email 2.7.4 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 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 | 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(-)