diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2012-09-04 15:19:35 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-10 14:36:17 +1000 |
| commit | 11f63d3fb9c4257b1f005db8d11deba9f992bdf6 (patch) | |
| tree | a9ab9deefe703cd00c020cba522b4700a64f775b /arch | |
| parent | 4715fed600109e0bd3d6cfa2b925a643173a08b4 (diff) | |
powerpc/iommu: Add ppc_md.tce_get() callback for use by VFIO
The upcoming VFIO support requires a way to know which
entry in the TCE map is not empty in order to do cleanup
at QEMU exit/crash. This patch adds such functionality
to POWERNV platform code.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index 1e908aef420..c01688a1a74 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -446,6 +446,11 @@ static void pnv_tce_free(struct iommu_table *tbl, long index, long npages) pnv_tce_invalidate(tbl, tces, tcep - 1); } +static unsigned long pnv_tce_get(struct iommu_table *tbl, long index) +{ + return ((u64 *)tbl->it_base)[index - tbl->it_offset]; +} + void pnv_pci_setup_iommu_table(struct iommu_table *tbl, void *tce_mem, u64 tce_size, u64 dma_offset) @@ -596,6 +601,7 @@ void __init pnv_pci_init(void) ppc_md.pci_dma_dev_setup = pnv_pci_dma_dev_setup; ppc_md.tce_build = pnv_tce_build; ppc_md.tce_free = pnv_tce_free; + ppc_md.tce_get = pnv_tce_get; ppc_md.pci_probe_mode = pnv_pci_probe_mode; set_pci_dma_ops(&dma_iommu_ops); |