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FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: q2imNbH/uJpkPBK+iUVr64twgjsMM95oN1rziP5iYba0ebj/U/3J3CTbQLY57O+Ltos3d8KOpw2QmPm46UwQ3z7hnD/M80stvPXDjnbIIX8H566gkMqPC3FpXudYNUf6CiZJAa4m64TA7XgMqu+1+V5qWskJObI/jn5BZahpmgUx+RvxXffJ6rfZD3Q9qB9+DSO8iFqbR7n9E3bNRt+5TnU6yzefrxY5Ae561nh95ZQHfLsNTWOpAnnPgIzyon5SNCUaXRA71OUT39UP3JSKY0X2vQJ5iw73+RBr0WHN+DqJWcDA+WFXMVoh+L8XLJSiqjRX5cMdV95VJD0NdcXaYbtczDyubIiIEvUhv87M/qTLhH9+w1WvGbAKY2q4GlXCUpo5Ub3GjMIQF5MOPeHFZNBovn3LzYcRyiu6lcc5nDc= MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: bf0139ce-a8b2-43ec-1564-08d68e58445b X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Feb 2019 06:31:43.4721 (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: MN2SPR01MB0008 Cc: Palmer Dabbelt , Alexander Graf , U-Boot Mailing List Subject: [U-Boot] [PATCH v6 04/16] 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 */