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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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9
arch/powerpc/kernel/pci_64.c
View File

@ -61,8 +61,7 @@ void iSeries_pcibios_init(void);
LIST_HEAD(hose_list);
struct dma_mapping_ops *pci_dma_ops;
EXPORT_SYMBOL(pci_dma_ops);
static struct dma_mapping_ops *pci_dma_ops;
int global_phb_number; /* Global phb counter */
@ -75,6 +74,12 @@ void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
pci_dma_ops = dma_ops;
}
struct dma_mapping_ops *get_pci_dma_ops(void)
{
return pci_dma_ops;
}
EXPORT_SYMBOL(get_pci_dma_ops);
static void fixup_broken_pcnet32(struct pci_dev* dev)
{
if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {

4
arch/powerpc/platforms/cell/iommu.c
View File

@ -496,7 +496,7 @@ static void cell_dma_dev_setup(struct device *dev)
struct dev_archdata *archdata = &dev->archdata;
/* If we run without iommu, no need to do anything */
if (pci_dma_ops == &dma_direct_ops)
if (get_pci_dma_ops() == &dma_direct_ops)
return;
/* Current implementation uses the first window available in that
@ -530,7 +530,7 @@ static int cell_of_bus_notify(struct notifier_block *nb, unsigned long action,
return 0;
/* We use the PCI DMA ops */
dev->archdata.dma_ops = pci_dma_ops;
dev->archdata.dma_ops = get_pci_dma_ops();
cell_dma_dev_setup(dev);

2
arch/powerpc/platforms/celleb/iommu.c
View File

@ -80,7 +80,7 @@ static int celleb_of_bus_notify(struct notifier_block *nb,
if (action != BUS_NOTIFY_ADD_DEVICE)
return 0;
dev->archdata.dma_ops = pci_dma_ops;
dev->archdata.dma_ops = get_pci_dma_ops();
return 0;
}

10
include/asm-powerpc/pci.h
View File

@ -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);