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powerpc/iseries: Fix pci breakage due to bad dma_data initialization

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Commit 4fc665b88a "powerpc: Merge 32 and
64-bit dma code" made changes to the PCI initialisation code that added
an assignment to archdata.dma_data but only for 32 bit code.  Commit
7eef440a54 "powerpc/pci: Cosmetic cleanups
of pci-common.c" removed the conditional compilation.  Unfortunately,
the iSeries code setup the archdata.dma_data before that assignment was
done - effectively overwriting the dma_data with NULL.

Fix this up by moving the iSeries setup of dma_data into a
pci_dma_dev_setup callback.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Stephen Rothwell x 2009-05-06 14:07:52 +00:00 committed by Benjamin Herrenschmidt
parent 93f1cc609c
commit 397717c578
3 changed files with 5 additions and 6 deletions
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4
arch/powerpc/include/asm/iseries/iommu.h
View file

@ -26,10 +26,6 @@ struct vio_dev;
struct device_node;
struct iommu_table;
/* Creates table for an individual device node */
extern void iommu_devnode_init_iSeries(struct pci_dev *pdev,
struct device_node *dn);
/* Get table parameters from HV */
extern void iommu_table_getparms_iSeries(unsigned long busno,
unsigned char slotno, unsigned char virtbus,

6
arch/powerpc/platforms/iseries/iommu.c
View file

@ -174,9 +174,10 @@ static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
}
void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn)
static void pci_dma_dev_setup_iseries(struct pci_dev *pdev)
{
struct iommu_table *tbl;
struct device_node *dn = pdev->sysdata;
struct pci_dn *pdn = PCI_DN(dn);
const u32 *lsn = of_get_property(dn, "linux,logical-slot-number", NULL);
@ -194,6 +195,8 @@ void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn)
kfree(tbl);
pdev->dev.archdata.dma_data = pdn->iommu_table;
}
#else
#define pci_dma_dev_setup_iseries NULL
#endif
static struct iommu_table veth_iommu_table;
@ -251,5 +254,6 @@ void iommu_init_early_iSeries(void)
ppc_md.tce_build = tce_build_iSeries;
ppc_md.tce_free = tce_free_iSeries;
ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_iseries;
set_pci_dma_ops(&dma_iommu_ops);
}

1
arch/powerpc/platforms/iseries/pci.c
View file

@ -444,7 +444,6 @@ void __init iSeries_pcibios_fixup_resources(struct pci_dev *pdev)
pdev->sysdata = node;
allocate_device_bars(pdev);
iseries_device_information(pdev, bus, *sub_bus);
iommu_devnode_init_iSeries(pdev, node);
}
/*