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powerpc: Remove addr_needs_map in struct dma_mapping_ops

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This patch adds max_direct_dma_addr to struct dev_archdata to remove
addr_needs_map in struct dma_mapping_ops. It also converts
dma_capable() to use max_direct_dma_addr.

max_direct_dma_addr is initialized in pci_dma_dev_setup_swiotlb(),
called via ppc_md.pci_dma_dev_setup hook.

For further information:
http://marc.info/?t=124719060200001&r=1&w=2

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
FUJITA Tomonori
2009-08-04 19:08:22 +00:00
committed by Benjamin Herrenschmidt
parent 2864697cef
commit 762afb7317
8 changed files with 28 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/device.h
View File

@@ -16,6 +16,9 @@ struct dev_archdata {
/* DMA operations on that device */
struct dma_mapping_ops *dma_ops;
void *dma_data;
#ifdef CONFIG_SWIOTLB
dma_addr_t max_direct_dma_addr;
#endif
};
static inline void dev_archdata_set_node(struct dev_archdata *ad,

8
arch/powerpc/include/asm/dma-mapping.h
View File

@@ -87,8 +87,6 @@ struct dma_mapping_ops {
dma_addr_t dma_address, size_t size,
enum dma_data_direction direction,
struct dma_attrs *attrs);
int (*addr_needs_map)(struct device *dev, dma_addr_t addr,
size_t size);
#ifdef CONFIG_PPC_NEED_DMA_SYNC_OPS
void (*sync_single_range_for_cpu)(struct device *hwdev,
dma_addr_t dma_handle, unsigned long offset,
@@ -426,10 +424,12 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
struct dma_mapping_ops *ops = get_dma_ops(dev);
#ifdef CONFIG_SWIOTLB
struct dev_archdata *sd = &dev->archdata;
if (ops->addr_needs_map && ops->addr_needs_map(dev, addr, size))
if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr)
return 0;
#endif
if (!dev->dma_mask)
return 0;

5
arch/powerpc/include/asm/swiotlb.h
View File

@@ -16,12 +16,11 @@
extern struct dma_mapping_ops swiotlb_dma_ops;
extern struct dma_mapping_ops swiotlb_pci_dma_ops;
int swiotlb_arch_address_needs_mapping(struct device *, dma_addr_t,
size_t size);
static inline void dma_mark_clean(void *addr, size_t size) {}
extern unsigned int ppc_swiotlb_enable;
int __init swiotlb_setup_bus_notifier(void);
extern void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev);
#endif /* __ASM_SWIOTLB_H */