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[POWERPC] Create and use get_pci_dma_ops()

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This allows us to hide pci_dma_ops.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell
2007-03-04 17:02:41 +11:00
committed by Paul Mackerras
parent 9874777016
commit 57190708f1
4 changed files with 16 additions and 9 deletions
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10
include/asm-powerpc/pci.h
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@@ -71,17 +71,18 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
#define PCI_DISABLE_MWI
#ifdef CONFIG_PCI
extern struct dma_mapping_ops *pci_dma_ops;
extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
extern struct dma_mapping_ops *get_pci_dma_ops(void);
/* For DAC DMA, we currently don't support it by default, but
* we let 64-bit platforms override this.
*/
static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
{
if (pci_dma_ops && pci_dma_ops->dac_dma_supported)
return pci_dma_ops->dac_dma_supported(&hwdev->dev, mask);
struct dma_mapping_ops *d = get_pci_dma_ops();
if (d && d->dac_dma_supported)
return d->dac_dma_supported(&hwdev->dev, mask);
return 0;
}
@@ -103,6 +104,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
}
#else /* CONFIG_PCI */
#define set_pci_dma_ops(d)
#define get_pci_dma_ops() NULL
#endif
extern int pci_domain_nr(struct pci_bus *bus);