mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
4c1b46226c
Typo will be harder with this one. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#ifndef _ASM_LINUX_DMA_MAPPING_H
|
|
#define _ASM_LINUX_DMA_MAPPING_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
|
|
/* These definitions mirror those in pci.h, so they can be used
|
|
* interchangeably with their PCI_ counterparts */
|
|
enum dma_data_direction {
|
|
DMA_BIDIRECTIONAL = 0,
|
|
DMA_TO_DEVICE = 1,
|
|
DMA_FROM_DEVICE = 2,
|
|
DMA_NONE = 3,
|
|
};
|
|
|
|
#define DMA_64BIT_MASK 0xffffffffffffffffULL
|
|
#define DMA_48BIT_MASK 0x0000ffffffffffffULL
|
|
#define DMA_40BIT_MASK 0x000000ffffffffffULL
|
|
#define DMA_39BIT_MASK 0x0000007fffffffffULL
|
|
#define DMA_32BIT_MASK 0x00000000ffffffffULL
|
|
#define DMA_31BIT_MASK 0x000000007fffffffULL
|
|
#define DMA_30BIT_MASK 0x000000003fffffffULL
|
|
#define DMA_29BIT_MASK 0x000000001fffffffULL
|
|
#define DMA_28BIT_MASK 0x000000000fffffffULL
|
|
#define DMA_24BIT_MASK 0x0000000000ffffffULL
|
|
|
|
#include <asm/dma-mapping.h>
|
|
|
|
/* Backwards compat, remove in 2.7.x */
|
|
#define dma_sync_single dma_sync_single_for_cpu
|
|
#define dma_sync_sg dma_sync_sg_for_cpu
|
|
|
|
extern u64 dma_get_required_mask(struct device *dev);
|
|
|
|
/* flags for the coherent memory api */
|
|
#define DMA_MEMORY_MAP 0x01
|
|
#define DMA_MEMORY_IO 0x02
|
|
#define DMA_MEMORY_INCLUDES_CHILDREN 0x04
|
|
#define DMA_MEMORY_EXCLUSIVE 0x08
|
|
|
|
#ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
|
|
static inline int
|
|
dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
|
|
dma_addr_t device_addr, size_t size, int flags)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
dma_release_declared_memory(struct device *dev)
|
|
{
|
|
}
|
|
|
|
static inline void *
|
|
dma_mark_declared_memory_occupied(struct device *dev,
|
|
dma_addr_t device_addr, size_t size)
|
|
{
|
|
return ERR_PTR(-EBUSY);
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|