738ef42e32
Sometimes this is used to hold a simple offset, and sometimes it is used to hold a pointer. This patch changes it to a union containing void * and dma_addr_t. get/set accessors are also provided, because it was getting a bit ugly to get to the actual data. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
49 lines
947 B
C
49 lines
947 B
C
/*
|
|
* Arch specific extensions to struct device
|
|
*
|
|
* This file is released under the GPLv2
|
|
*/
|
|
#ifndef _ASM_POWERPC_DEVICE_H
|
|
#define _ASM_POWERPC_DEVICE_H
|
|
|
|
struct dma_map_ops;
|
|
struct device_node;
|
|
|
|
struct dev_archdata {
|
|
/* Optional pointer to an OF device node */
|
|
struct device_node *of_node;
|
|
|
|
/* DMA operations on that device */
|
|
struct dma_map_ops *dma_ops;
|
|
|
|
/*
|
|
* When an iommu is in use, dma_data is used as a ptr to the base of the
|
|
* iommu_table. Otherwise, it is a simple numerical offset.
|
|
*/
|
|
union {
|
|
dma_addr_t dma_offset;
|
|
void *iommu_table_base;
|
|
} dma_data;
|
|
|
|
#ifdef CONFIG_SWIOTLB
|
|
dma_addr_t max_direct_dma_addr;
|
|
#endif
|
|
};
|
|
|
|
static inline void dev_archdata_set_node(struct dev_archdata *ad,
|
|
struct device_node *np)
|
|
{
|
|
ad->of_node = np;
|
|
}
|
|
|
|
static inline struct device_node *
|
|
dev_archdata_get_node(const struct dev_archdata *ad)
|
|
{
|
|
return ad->of_node;
|
|
}
|
|
|
|
struct pdev_archdata {
|
|
};
|
|
|
|
#endif /* _ASM_POWERPC_DEVICE_H */
|