From patchwork Mon Dec 17 11:51:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 1014437 X-Patchwork-Delegate: uboot@andestech.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=brainfault.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=brainfault-org.20150623.gappssmtp.com header.i=@brainfault-org.20150623.gappssmtp.com header.b="te/ujxrk"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 43JKJn4blcz9s4s for ; Mon, 17 Dec 2018 22:52:25 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 5D634C22047; Mon, 17 Dec 2018 11:52:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 95E46C22055; Mon, 17 Dec 2018 11:52:08 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 4CA9EC22058; Mon, 17 Dec 2018 11:52:06 +0000 (UTC) Received: from mail-pf1-f196.google.com (mail-pf1-f196.google.com [209.85.210.196]) by lists.denx.de (Postfix) with ESMTPS id 0C738C21EFD for ; Mon, 17 Dec 2018 11:52:02 +0000 (UTC) Received: by mail-pf1-f196.google.com with SMTP id b85so6262736pfc.3 for ; Mon, 17 Dec 2018 03:52:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brainfault-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Yn6QcWQa6HDC5QjPExL/z2YB9EBoPexQOotdxJxvqXo=; b=te/ujxrk1hFrtjxHD4Z4yqMiOps+T95pFuSCPuizlwHuHTu28pxQyfqmrmhoZVeDvy qqoBkCdxNFD3E5OgByBssvcZA+odR/wqG0Ps+FGIkh2gdW8TShafQQplziRfycoYP6ao NuBkFaKEVabP7qvNhFR675W7lZgUxLHzx1yYEhtN4MZkSBQG9UE/N0Z6HbopbjN+gosZ oREisN8mxyYqHmWV+g0taFEov7f3g/AyZ/qI98ISA82gmumGhX2PgF+H0syDrgbO54xp NioZxKRHLgVHdT3HEZYpUUFnuAy4l8PokvI48IU2AQV9EQvZdT72RHO5fPBkssxjNPiP azqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Yn6QcWQa6HDC5QjPExL/z2YB9EBoPexQOotdxJxvqXo=; b=BCI/9RJ1L/83J5GpodrTNtZAEFflxNgI2JgmtqGzALmRsz8TnCeelnr8gB1E5r7KXB EkdpEGLzqs2Drp/4AK9ZUJMLzFF6oo2GnkJI3uJapX4F2vi0VL8CtvGb9gZpRLVMgyWb TQS3K+m0voTTPnMapxvKoa/YZwN0xU7Tn9lD9uU3MLGyrh9nonC4IJoT532qBlmeHgFA IEil9I87yqYxS+hCxrkcIxyM/6dimRU17rjyUCVFPqCSAionqJq+gYVZFZbM2z+YK093 AcNCWDQ5aHC9pr93pk6iyjL10ilO968MzAmUlgTNE4rvkd3ak+chvCKdxig+/qydQu6D k17g== X-Gm-Message-State: AA+aEWYSQhSQLk25Wwz2oUeEfwyC7bnfnJJwBKeXWEW4acVbtOUKtwxh KeSgujrWhAJRIxOE8PPDqSV8dA== X-Google-Smtp-Source: AFSGD/Vy1AcNGmZy2pX4arxMIbC6/DlRJAgv/3peoESxZSpth5QqW3014nisMhtk07saNgLuSQKGgQ== X-Received: by 2002:a62:ab0d:: with SMTP id p13mr12556251pff.211.1545047520518; Mon, 17 Dec 2018 03:52:00 -0800 (PST) Received: from localhost.localdomain ([49.207.49.69]) by smtp.gmail.com with ESMTPSA id e16sm16068610pfn.46.2018.12.17.03.51.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 17 Dec 2018 03:51:59 -0800 (PST) From: Anup Patel To: Rick Chen , Bin Meng , Joe Hershberger , Lukas Auer Date: Mon, 17 Dec 2018 17:21:41 +0530 Message-Id: <20181217115143.18373-2-anup@brainfault.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181217115143.18373-1-anup@brainfault.org> References: <20181217115143.18373-1-anup@brainfault.org> Cc: Palmer Dabbelt , U-Boot Mailing List , Anup Patel , Alexander Graf , Christoph Hellwig , Atish Patra Subject: [U-Boot] [PATCH 1/3] riscv: Add asm/dma-mapping.h for DMA mappings X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Anup Patel This patch adds asm/dma-mapping.h for Linux-like DMA mappings APIs required by some of the drivers (such as, Cadance MACB Ethernet driver). Signed-off-by: Anup Patel Reviewed-by: Bin Meng --- arch/riscv/include/asm/dma-mapping.h | 37 ++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/riscv/include/asm/dma-mapping.h diff --git a/arch/riscv/include/asm/dma-mapping.h b/arch/riscv/include/asm/dma-mapping.h new file mode 100644 index 0000000000..9782b6f168 --- /dev/null +++ b/arch/riscv/include/asm/dma-mapping.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2018 Western Digital Corporation or its affiliates. + * + * Authors: + * Anup Patel + */ +#ifndef __ASM_RISCV_DMA_MAPPING_H +#define __ASM_RISCV_DMA_MAPPING_H + +#include + +#define dma_mapping_error(x, y) 0 + +static inline void *dma_alloc_coherent(size_t len, unsigned long *handle) +{ + *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len); + return (void *)*handle; +} + +static inline void dma_free_coherent(void *addr) +{ + free(addr); +} + +static inline unsigned long dma_map_single(volatile void *vaddr, size_t len, + enum dma_data_direction dir) +{ + return (unsigned long)vaddr; +} + +static inline void dma_unmap_single(volatile void *vaddr, size_t len, + unsigned long paddr) +{ +} + +#endif /* __ASM_RISCV_DMA_MAPPING_H */