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powerpc/cell: cell_dma_dev_setup_iommu() return the iommu table

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Make cell_dma_dev_setup_iommu() return a pointer to the struct iommu_table
(or NULL if no table can be found) rather than putting this pointer into
dev->archdata.dma_data (let the caller do that), and rename this function
to cell_get_iommu_table() to reflect this change.

This will allow us to get the iommu table for a device that doesn't have
the table in the archdata.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Mark Nelson 2008-07-05 05:05:44 +10:00 committed by Benjamin Herrenschmidt
parent 3affedc4e1
commit 7e5f810503
1 changed files with 4 additions and 4 deletions
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8
arch/powerpc/platforms/cell/iommu.c
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@ -540,7 +540,7 @@ static unsigned long cell_dma_direct_offset;
static unsigned long dma_iommu_fixed_base;
struct dma_mapping_ops dma_iommu_fixed_ops;
static void cell_dma_dev_setup_iommu(struct device *dev)
static struct iommu_table *cell_get_iommu_table(struct device *dev)
{
struct iommu_window *window;
struct cbe_iommu *iommu;
@ -555,11 +555,11 @@ static void cell_dma_dev_setup_iommu(struct device *dev)
printk(KERN_ERR "iommu: missing iommu for %s (node %d)\n",
archdata->of_node ? archdata->of_node->full_name : "?",
archdata->numa_node);
return;
return NULL;
}
window = list_entry(iommu->windows.next, struct iommu_window, list);
archdata->dma_data = &window->table;
return &window->table;
}
static void cell_dma_dev_setup_fixed(struct device *dev);
@ -572,7 +572,7 @@ static void cell_dma_dev_setup(struct device *dev)
if (get_dma_ops(dev) == &dma_iommu_fixed_ops)
cell_dma_dev_setup_fixed(dev);
else if (get_pci_dma_ops() == &dma_iommu_ops)
cell_dma_dev_setup_iommu(dev);
archdata->dma_data = cell_get_iommu_table(dev);
else if (get_pci_dma_ops() == &dma_direct_ops)
archdata->dma_data = (void *)cell_dma_direct_offset;
else