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ddk: update

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git-svn-id: svn://kolibrios.org@6102 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2016-01-27 05:30:28 +00:00
parent b096a68434
commit cf125b5b49
49 changed files with 7225 additions and 580 deletions
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36
drivers/include/linux/dma-mapping.h
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@@ -1,8 +1,44 @@
#ifndef _LINUX_DMA_MAPPING_H
#define _LINUX_DMA_MAPPING_H
#include <linux/sizes.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/dma-direction.h>
#include <linux/scatterlist.h>
extern void *
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag);
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
#define DMA_MASK_NONE 0x0ULL
static inline int valid_dma_direction(int dma_direction)
{
return ((dma_direction == DMA_BIDIRECTIONAL) ||
(dma_direction == DMA_TO_DEVICE) ||
(dma_direction == DMA_FROM_DEVICE));
}
static inline int is_device_dma_capable(struct device *dev)
{
return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE;
}
#ifndef dma_max_pfn
static inline unsigned long dma_max_pfn(struct device *dev)
{
return *dev->dma_mask >> PAGE_SHIFT;
}
#endif
static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
void *ret = dma_alloc_coherent(dev, size, dma_handle,
flag | __GFP_ZERO);
return ret;
}
#endif