diff options
Diffstat (limited to 'include/asm-mips/mach-generic')
| -rw-r--r-- | include/asm-mips/mach-generic/dma-coherence.h | 43 | ||||
| -rw-r--r-- | include/asm-mips/mach-generic/kmalloc.h | 1 |
2 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-mips/mach-generic/dma-coherence.h b/include/asm-mips/mach-generic/dma-coherence.h new file mode 100644 index 00000000000..df71822fd27 --- /dev/null +++ b/include/asm-mips/mach-generic/dma-coherence.h @@ -0,0 +1,43 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> + * + */ +#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H +#define __ASM_MACH_GENERIC_DMA_COHERENCE_H + +struct device; + +static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) +{ + return virt_to_phys(addr); +} + +static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +{ + return page_to_phys(page); +} + +static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) +{ + return dma_addr; +} + +static void plat_unmap_dma_mem(dma_addr_t dma_addr) +{ +} + +static inline int plat_device_is_coherent(struct device *dev) +{ +#ifdef CONFIG_DMA_COHERENT + return 1; +#endif +#ifdef CONFIG_DMA_NONCOHERENT + return 0; +#endif +} + +#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ diff --git a/include/asm-mips/mach-generic/kmalloc.h b/include/asm-mips/mach-generic/kmalloc.h index 410ab5f6c56..b8e6deba352 100644 --- a/include/asm-mips/mach-generic/kmalloc.h +++ b/include/asm-mips/mach-generic/kmalloc.h @@ -5,6 +5,7 @@ #ifndef CONFIG_DMA_COHERENT /* * Total overkill for most systems but need as a safe default. + * Set this one if any device in the system might do non-coherent DMA. */ #define ARCH_KMALLOC_MINALIGN 128 #endif |