diff options
Diffstat (limited to 'arch/kvx/include/asm/dma.h')
| -rw-r--r-- | arch/kvx/include/asm/dma.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/kvx/include/asm/dma.h b/arch/kvx/include/asm/dma.h new file mode 100644 index 0000000000..a7ecf279a9 --- /dev/null +++ b/arch/kvx/include/asm/dma.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* SPDX-FileCopyrightText: 2021 Yann Sionneau <ysionneau@kalray.eu>, Kalray Inc. */ + +#ifndef __ASM_DMA_H +#define __ASM_DMA_H + +#include <common.h> + +#define KVX_DDR_32BIT_RAM_WINDOW_BA (0x80000000ULL) +#define KVX_DDR_64BIT_RAM_WINDOW_BA (0x100000000ULL) +#define MAX_32BIT_ADDR (0xffffffffULL) + +#define dma_alloc dma_alloc +static inline void *dma_alloc(size_t size) +{ + return xmemalign(64, ALIGN(size, 64)); +} + +static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle) +{ + BUILD_BUG_ON_MSG(1, "dma_alloc_coherent not supported: " + "MMU support is required to map uncached pages"); + return NULL; +} + +static inline void dma_free_coherent(void *mem, dma_addr_t dma_handle, + size_t size) +{ + free(mem); +} + +#endif /* __ASM_DMA_H */ |