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Mon, 11 Feb 2019 05:41:22 +0000 Received: from MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::2cdb:c465:af57:8be1]) by MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::2cdb:c465:af57:8be1%7]) with mapi id 15.20.1601.023; Mon, 11 Feb 2019 05:41:22 +0000 From: Anup Patel To: Rick Chen , Bin Meng , Joe Hershberger , Michal Simek , Michal Simek , Lukas Auer , Masahiro Yamada , Simon Glass Thread-Topic: [PATCH v7 03/15] riscv: Add asm/dma-mapping.h for DMA mappings Thread-Index: AQHUwcxrr9FI3hxmw0WB8eYpb0p+Jg== Date: Mon, 11 Feb 2019 05:41:22 +0000 Message-ID: <20190211054030.21393-4-anup.patel@wdc.com> References: <20190211054030.21393-1-anup.patel@wdc.com> In-Reply-To: <20190211054030.21393-1-anup.patel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MA1PR01CA0132.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:35::26) To MN2PR04MB6061.namprd04.prod.outlook.com (2603:10b6:208:de::20) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Anup.Patel@wdc.com; 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SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: jrNEXRZDhVgYP4sXEcrpAiq3C37d3M9cLeN51TLZX5bWFeu7QbmNKqNcBG6CVspDvZVTapBy7eqlUJ2gPkq3Gs7sM/AeFEdfEwUvUIOMz2RHEhaA9FYRRorICRbml79MdFtRH1+JMH4MOcucA2j2XZUQwKm3jTpqBvUSQgRWNoT1C2W3zBYK8Y1LJK5tG8n39xEbs8FTIq2Nua51viNmldwPrBUsaQ59oGtfW7P+0l7a5x/3bG6gm2oFx8iiL8zDNS5LZ7fVp/JFKUpsuEeYdBWitce6vimlnNpxlXQxizAJJL5ImdsyE5H7Mh+fkKS0iOVUKAdp3ZGEMR0+QuxYPlSlAVK4g35HQzi8AJmXW5j7em86JXZH0o+x8H1Smgnt2Kehi6L06vYl872yfKG6LOfzufrUvymFVxHYC7/VZeQ= MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 32e84e81-ca4a-4445-028c-08d68fe38e15 X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Feb 2019 05:41:18.0091 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5903 Cc: Palmer Dabbelt , Alexander Graf , U-Boot Mailing List Subject: [U-Boot] [PATCH v7 03/15] 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: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" 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 Reviewed-by: Alexander Graf Reviewed-by: Lukas Auer --- 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 */