mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 22:54:01 +00:00
powerpc/dma: remove get_pci_dma_ops
This function is only used by the Cell iommu code, which can keep track if it is using the iommu internally just as good. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
parent
e72849827a
commit
7c1013b487
3 changed files with 8 additions and 17 deletions
|
@ -52,10 +52,8 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
|
||||||
|
|
||||||
#ifdef CONFIG_PCI
|
#ifdef CONFIG_PCI
|
||||||
extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops);
|
extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops);
|
||||||
extern const struct dma_map_ops *get_pci_dma_ops(void);
|
|
||||||
#else /* CONFIG_PCI */
|
#else /* CONFIG_PCI */
|
||||||
#define set_pci_dma_ops(d)
|
#define set_pci_dma_ops(d)
|
||||||
#define get_pci_dma_ops() NULL
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#ifdef CONFIG_PPC64
|
#ifdef CONFIG_PPC64
|
||||||
|
|
|
@ -69,12 +69,6 @@ void set_pci_dma_ops(const struct dma_map_ops *dma_ops)
|
||||||
pci_dma_ops = dma_ops;
|
pci_dma_ops = dma_ops;
|
||||||
}
|
}
|
||||||
|
|
||||||
const struct dma_map_ops *get_pci_dma_ops(void)
|
|
||||||
{
|
|
||||||
return pci_dma_ops;
|
|
||||||
}
|
|
||||||
EXPORT_SYMBOL(get_pci_dma_ops);
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* This function should run under locking protection, specifically
|
* This function should run under locking protection, specifically
|
||||||
* hose_spinlock.
|
* hose_spinlock.
|
||||||
|
|
|
@ -544,6 +544,7 @@ static struct cbe_iommu *cell_iommu_for_node(int nid)
|
||||||
static unsigned long cell_dma_nommu_offset;
|
static unsigned long cell_dma_nommu_offset;
|
||||||
|
|
||||||
static unsigned long dma_iommu_fixed_base;
|
static unsigned long dma_iommu_fixed_base;
|
||||||
|
static bool cell_iommu_enabled;
|
||||||
|
|
||||||
/* iommu_fixed_is_weak is set if booted with iommu_fixed=weak */
|
/* iommu_fixed_is_weak is set if booted with iommu_fixed=weak */
|
||||||
bool iommu_fixed_is_weak;
|
bool iommu_fixed_is_weak;
|
||||||
|
@ -572,16 +573,14 @@ static u64 cell_iommu_get_fixed_address(struct device *dev);
|
||||||
|
|
||||||
static void cell_dma_dev_setup(struct device *dev)
|
static void cell_dma_dev_setup(struct device *dev)
|
||||||
{
|
{
|
||||||
if (get_pci_dma_ops() == &dma_iommu_ops) {
|
if (cell_iommu_enabled) {
|
||||||
u64 addr = cell_iommu_get_fixed_address(dev);
|
u64 addr = cell_iommu_get_fixed_address(dev);
|
||||||
|
|
||||||
if (addr != OF_BAD_ADDR)
|
if (addr != OF_BAD_ADDR)
|
||||||
set_dma_offset(dev, addr + dma_iommu_fixed_base);
|
set_dma_offset(dev, addr + dma_iommu_fixed_base);
|
||||||
set_iommu_table_base(dev, cell_get_iommu_table(dev));
|
set_iommu_table_base(dev, cell_get_iommu_table(dev));
|
||||||
} else if (get_pci_dma_ops() == &dma_nommu_ops) {
|
|
||||||
set_dma_offset(dev, cell_dma_nommu_offset);
|
|
||||||
} else {
|
} else {
|
||||||
BUG();
|
set_dma_offset(dev, cell_dma_nommu_offset);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -599,11 +598,11 @@ static int cell_of_bus_notify(struct notifier_block *nb, unsigned long action,
|
||||||
if (action != BUS_NOTIFY_ADD_DEVICE)
|
if (action != BUS_NOTIFY_ADD_DEVICE)
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
/* We use the PCI DMA ops */
|
if (cell_iommu_enabled)
|
||||||
dev->dma_ops = get_pci_dma_ops();
|
dev->dma_ops = &dma_iommu_ops;
|
||||||
|
else
|
||||||
|
dev->dma_ops = &dma_nommu_ops;
|
||||||
cell_dma_dev_setup(dev);
|
cell_dma_dev_setup(dev);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -1093,7 +1092,7 @@ static int __init cell_iommu_init(void)
|
||||||
done:
|
done:
|
||||||
/* Setup default PCI iommu ops */
|
/* Setup default PCI iommu ops */
|
||||||
set_pci_dma_ops(&dma_iommu_ops);
|
set_pci_dma_ops(&dma_iommu_ops);
|
||||||
|
cell_iommu_enabled = true;
|
||||||
bail:
|
bail:
|
||||||
/* Register callbacks on OF platform device addition/removal
|
/* Register callbacks on OF platform device addition/removal
|
||||||
* to handle linking them to the right DMA operations
|
* to handle linking them to the right DMA operations
|
||||||
|
|
Loading…
Reference in a new issue