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powerpc/vfio: Enable on pSeries platform 

The enables VFIO on the pSeries platform, enabling user space
programs to access PCI devices directly.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Alexey Kardashevskiy 2013-05-21 13:33:11 +10:00 committed by Benjamin Herrenschmidt
parent 5ffd229c02
commit 5b25199eff
3 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -614,6 +614,7 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus)
iommu_table_setparms(pci->phb, dn, tbl);
pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
iommu_register_group(tbl, pci_domain_nr(bus), 0);
/* Divide the rest (1.75GB) among the children */
pci->phb->dma_window_size = 0x80000000ul;
@ -658,6 +659,7 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus)
ppci->phb->node);
iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node);
iommu_register_group(tbl, pci_domain_nr(bus), 0);
pr_debug(" created table: %p\n", ppci->iommu_table);
}
}
@ -684,6 +686,7 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
phb->node);
iommu_table_setparms(phb, dn, tbl);
PCI_DN(dn)->iommu_table = iommu_init_table(tbl, phb->node);
iommu_register_group(tbl, pci_domain_nr(phb->bus), 0);
set_iommu_table_base(&dev->dev, PCI_DN(dn)->iommu_table);
return;
}
@ -1184,6 +1187,7 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
pci->phb->node);
iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
iommu_register_group(tbl, pci_domain_nr(pci->phb->bus), 0);
pr_debug(" created table: %p\n", pci->iommu_table);
} else {
pr_debug(" found DMA window, table: %p\n", pci->iommu_table);

2
drivers/iommu/Kconfig
View File

@ -263,7 +263,7 @@ config SHMOBILE_IOMMU_L1SIZE
config SPAPR_TCE_IOMMU
bool "sPAPR TCE IOMMU Support"
depends on PPC_POWERNV
depends on PPC_POWERNV || PPC_PSERIES
select IOMMU_API
help
Enables bits of IOMMU API required by VFIO. The iommu_ops

2
drivers/vfio/Kconfig
View File

@ -12,7 +12,7 @@ menuconfig VFIO
tristate "VFIO Non-Privileged userspace driver framework"
depends on IOMMU_API
select VFIO_IOMMU_TYPE1 if X86
select VFIO_IOMMU_SPAPR_TCE if PPC_POWERNV
select VFIO_IOMMU_SPAPR_TCE if (PPC_POWERNV || PPC_PSERIES)
help
VFIO provides a framework for secure userspace device drivers.
See Documentation/vfio.txt for more details.