diff options
| author | ken kuo | 2013-08-06 01:00:53 +0800 |
|---|---|---|
| committer | Andes | 2013-08-09 01:51:11 +0800 |
| commit | 9f128bcc0728e421c067b4f3f11dd36fa6b9e9ee (patch) | |
| tree | c51b80c6bbd3abcb9e59fe070541424312127068 /arch/nds32 | |
| parent | 5c440813a7b8f1062bfb2ea3525b29f513be13ae (diff) | |
nds32: introduce DMA allocation API
U-Boot does not compile for the adp-ag101 boards since
commit a8f9cd1893bef05b92f63242228607b45821c4a7
(net: update FTGMAC100 for MMU/D-cache support)
The driver assumes that the DMA allocation API are provided by all
architectures. This is not the case for nds32 and it causes a
build error. This patch adds DMA allocation API to avoid the errors.
Signed-off-by: Kuan-Yu Kuo <ken.kuoky@gmail.com>
Cc: Macpaul Lin <macpaul@gmail.com>
Cc: Andes <uboot@andestech.com>
Signed-off-by: Andes <uboot@andestech.com>
Diffstat (limited to 'arch/nds32')
| -rw-r--r-- | arch/nds32/include/asm/dma-mapping.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/nds32/include/asm/dma-mapping.h b/arch/nds32/include/asm/dma-mapping.h new file mode 100644 index 00000000000..25e5a1b6ec8 --- /dev/null +++ b/arch/nds32/include/asm/dma-mapping.h @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2013 Andes Technology Corporation + * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef __ASM_NDS_DMA_MAPPING_H +#define __ASM_NDS_DMA_MAPPING_H + +enum dma_data_direction { + DMA_BIDIRECTIONAL = 0, + DMA_TO_DEVICE = 1, + DMA_FROM_DEVICE = 2, +}; + +static void *dma_alloc_coherent(size_t len, unsigned long *handle) +{ + *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len); + return (void *)*handle; +} + +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_NDS_DMA_MAPPING_H */ |