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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2016-04-29 18:55:19 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-11 21:54:29 +1000 |
| commit | 6969af73521a9042d91c9efd41f22cf7be7f1ba9 (patch) | |
| tree | aa5b99734f938061cba87679f745d7b7ebd4d629 /arch/powerpc | |
| parent | 0bbcdb437da0c4acba582058d3d1a84b93bc081d (diff) | |
| download | linux-6969af73521a9042d91c9efd41f22cf7be7f1ba9.tar.bz2 | |
powerpc/powernv/npu: Use the correct IOMMU page size
This uses the page size from iommu_table instead of hard-coded 4K.
This should cause no change in behavior.
While we are here, move bits around to prepare for further rework
which will define and use iommu_table_group_ops.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/powernv/npu-dma.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index 778570c60a01..5bd5fee96014 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -204,8 +204,7 @@ static void pnv_npu_disable_bypass(struct pnv_ioda_pe *npe) struct pnv_phb *phb = npe->phb; struct pci_dev *gpdev; struct pnv_ioda_pe *gpe; - void *addr; - unsigned int size; + struct iommu_table *tbl; int64_t rc; /* @@ -219,11 +218,11 @@ static void pnv_npu_disable_bypass(struct pnv_ioda_pe *npe) if (!gpe) return; - addr = (void *)gpe->table_group.tables[0]->it_base; - size = gpe->table_group.tables[0]->it_size << 3; + tbl = gpe->table_group.tables[0]; rc = opal_pci_map_pe_dma_window(phb->opal_id, npe->pe_number, - npe->pe_number, 1, __pa(addr), - size, 0x1000); + npe->pe_number, 1, __pa(tbl->it_base), + tbl->it_size << 3, + IOMMU_PAGE_SIZE(tbl)); if (rc != OPAL_SUCCESS) pr_warn("%s: Error %lld setting DMA window on PHB#%d-PE#%d\n", __func__, rc, phb->hose->global_number, npe->pe_number); |