From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Date: Thu, 6 Jul 2017 14:41:51 +0300 Subject: [U-Boot] [PATCH v3 1/3] x86: Add dma-mapping.h to architectural code In-Reply-To: <20170706114153.50959-1-andriy.shevchenko@linux.intel.com> References: <20170706114153.50959-1-andriy.shevchenko@linux.intel.com> Message-ID: <20170706114153.50959-2-andriy.shevchenko@linux.intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Some cross-platform drivers rely on this header present. Make it so for x86. It's just a copy'n'paste of arch/arm/include/asm/dma-mapping.h. Suggested-by: Bin Meng Reviewed-by: Simon Glass Reviewed-by: Bin Meng Signed-off-by: Andy Shevchenko --- arch/x86/include/asm/dma-mapping.h | 41 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/x86/include/asm/dma-mapping.h diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h new file mode 100644 index 0000000000..7de4c08e36 --- /dev/null +++ b/arch/x86/include/asm/dma-mapping.h @@ -0,0 +1,41 @@ +/* + * (C) Copyright 2007 + * Stelian Pop + * Lead Tech Design + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef __ASM_X86_DMA_MAPPING_H +#define __ASM_X86_DMA_MAPPING_H + +#define dma_mapping_error(x, y) 0 + +enum dma_data_direction { + DMA_BIDIRECTIONAL = 0, + DMA_TO_DEVICE = 1, + DMA_FROM_DEVICE = 2, +}; + +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_X86_DMA_MAPPING_H */ -- 2.11.0