mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
|
|
* 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>
|
|
* Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
*/
|
|
#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
|
|
#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
|
|
|
|
#if 0
|
|
#define PCI_DMA_OFFSET 0x20000000
|
|
#else
|
|
#define PCI_DMA_OFFSET 0x00000000
|
|
#endif
|
|
|
|
struct device;
|
|
|
|
static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
|
|
{
|
|
return virt_to_phys(addr) + (dev != NULL ? PCI_DMA_OFFSET : 0);
|
|
}
|
|
|
|
static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
|
|
{
|
|
return page_to_phys(page) + (dev != NULL ? PCI_DMA_OFFSET : 0);
|
|
}
|
|
|
|
static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
|
|
{
|
|
return (dma_addr > PCI_DMA_OFFSET ? dma_addr - PCI_DMA_OFFSET : dma_addr);
|
|
}
|
|
|
|
static void plat_unmap_dma_mem(dma_addr_t dma_addr)
|
|
{
|
|
}
|
|
|
|
static inline int plat_device_is_coherent(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */
|