From patchwork Wed Dec 19 12:31:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 1016020 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="uj1bOLlB"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 43KZ6b5MQfz9s3Z for ; Wed, 19 Dec 2018 23:32:55 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 62CACC2202A; Wed, 19 Dec 2018 12:32:34 +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 8F006C2208A; Wed, 19 Dec 2018 12:32:22 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 9474AC21FB5; Wed, 19 Dec 2018 12:32:20 +0000 (UTC) Received: from mail-pl1-f193.google.com (mail-pl1-f193.google.com [209.85.214.193]) by lists.denx.de (Postfix) with ESMTPS id 0417FC2204E for ; Wed, 19 Dec 2018 12:32:17 +0000 (UTC) Received: by mail-pl1-f193.google.com with SMTP id p8so9423751plo.2 for ; Wed, 19 Dec 2018 04:32:16 -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=p/LvdIXhvZMEm2SjA4hCsGwfxVn97+qE2K9wkM8z4ZU=; b=uj1bOLlBKxiyGGo7OOOrfeXKTPWiKk3xkuj546ceITXwx1qBUZA3NWW0P1oQsy/rFl /Egbe/jvHnPZnKgcUHVsGjQR0WB4Xix8s52gMxixqTqwhZ+rJWS/ITo+FUDBRl/tTE4J yIWxYY6IQTIsDkMt49UFP0isHdd+RohKHzrDf5qn3r1YQpi9h5oM+7YVZC54iFjR2qIG tICR6FbuoIhaEHUYoXyOtT84c6Mer+TgXUf9QMWZj+xsPxR42py0/2Y27aOKxJaC+RCM Xzp6EWrLi3aRWf9G836ydXaecv1hX0xkYqL5XhSRv2wWE/kwS5GRjVEaeyNs/Cc+4vGs /MyA== 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=p/LvdIXhvZMEm2SjA4hCsGwfxVn97+qE2K9wkM8z4ZU=; b=WrIn/bjDbuZUDQHQiXfINvPds7U/EQ0voXMEEG5HvRiE7pCOYWzjv9CVN9o/m9p1sz BqH8ixtcmzcuDPHhE9D7LBtH4rf4SPiCaiMT1X5iTv297UHifOQ8JL22BR3e9BcYTj4u g0Xlv8QfnCPl4aU/NtVoYWgbiUFxbHIZbpw/NLhMZPFQI1ranVqzcCBrXxzAFohF9Jqk gHkDcEHqV4oz0+aUoeEUJDRKgzI+NKzKb4XthaTosQcJ+jg+W2Un6vQ1CZ8COaF4KOno 4xYu+oA9MB9JX17B2nuBAPGnFDqH9QuQlUEf8BjYVfZ5D1Zb0WgiMtPIBGKqFiU3bqfV +nOQ== X-Gm-Message-State: AA+aEWaBCUeP9gpDUKqDNfVnQ/iUZz7Mm3M33QpUk/K0yqABAcNu9o5N Jr5r6E8TXIup0B4L676XXOsGwA== X-Google-Smtp-Source: AFSGD/ULsLtMz/2rkLCrkEhNYt8y8303WlhR9xSN10AIsivyJ3G5O0PErF8wGzUmOgj9P7gvp1+QIA== X-Received: by 2002:a17:902:24a2:: with SMTP id w31mr19793176pla.216.1545222735421; Wed, 19 Dec 2018 04:32:15 -0800 (PST) Received: from localhost.localdomain ([106.51.16.106]) by smtp.gmail.com with ESMTPSA id v12sm24906687pgg.41.2018.12.19.04.32.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 19 Dec 2018 04:32:14 -0800 (PST) From: Anup Patel To: Rick Chen , Bin Meng , Joe Hershberger , Lukas Auer Date: Wed, 19 Dec 2018 18:01:55 +0530 Message-Id: <20181219123157.61148-2-anup@brainfault.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181219123157.61148-1-anup@brainfault.org> References: <20181219123157.61148-1-anup@brainfault.org> Cc: Palmer Dabbelt , U-Boot Mailing List , Anup Patel , Alexander Graf , Christoph Hellwig , Atish Patra Subject: [U-Boot] [PATCH v2 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 | 38 ++++++++++++++++++++++++++++ 1 file changed, 38 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..3d930c90ec --- /dev/null +++ b/arch/riscv/include/asm/dma-mapping.h @@ -0,0 +1,38 @@ +/* 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 */