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powerpc/powernv/npu: Use the correct IOMMU page size

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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>
This commit is contained in:
Alexey Kardashevskiy 2016-04-29 18:55:19 +10:00 committed by Michael Ellerman
parent 0bbcdb437d
commit 6969af7352
1 changed files with 5 additions and 6 deletions
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11
arch/powerpc/platforms/powernv/npu-dma.c
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@ -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);