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[MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}

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Platforms will now have to supply a function dma_device_is_coherent which
returns if a particular device participates in the coherence domain.  For
most platforms this function will always return 0 or 1.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2006-11-16 02:56:12 +00:00
parent f65e4fa8e0
commit 9a88cbb522
13 changed files with 387 additions and 1020 deletions
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43
include/asm-mips/mach-generic/dma-coherence.h Normal file
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/*
* 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 */