diff options
author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2015-06-05 09:34:55 +0300 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-06-11 08:14:54 +0300 |
commit | c5773822c000bafd462ad02db1d61459acef0d52 (patch) | |
tree | 07e4dd73e7af5b3cf12f61bd73576488df3b8217 | |
parent | 4617082ec049d92a797e8be0b4ba2ba6b59d90d1 (diff) | |
download | linux-c5773822c000bafd462ad02db1d61459acef0d52.tar.xz |
powerpc/powernv/ioda: Clean up IOMMU group registration
The existing code has 3 calls to iommu_register_group() and
all 3 branches actually cover all possible cases.
This replaces 3 calls with one and moves the registration earlier;
the latter will make more sense when we add TCE table sharing.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index fd594b28fce1..2b829eb07f87 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1785,6 +1785,9 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, if (WARN_ON(pe->tce32_seg >= 0)) return; + tbl = pe->tce32_table; + iommu_register_group(tbl, phb->hose->global_number, pe->pe_number); + /* Grab a 32-bit TCE table */ pe->tce32_seg = base; pe_info(pe, " Setting up 32-bit TCE table at %08x..%08x\n", @@ -1819,7 +1822,6 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, } /* Setup linux iommu table */ - tbl = pe->tce32_table; pnv_pci_setup_iommu_table(tbl, addr, TCE32_TABLE_SIZE * segs, base << 28, IOMMU_PAGE_SHIFT_4K); @@ -1841,8 +1843,6 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, iommu_init_table(tbl, phb->hose->node); if (pe->flags & PNV_IODA_PE_DEV) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); /* * Setting table base here only for carrying iommu_group * further down to let iommu_add_device() do the job. @@ -1850,14 +1850,8 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, */ set_iommu_table_base(&pe->pdev->dev, tbl); iommu_add_device(&pe->pdev->dev); - } else if (pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); + } else if (pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)) pnv_ioda_setup_bus_dma(pe, pe->pbus); - } else if (pe->flags & PNV_IODA_PE_VF) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); - } return; fail: @@ -1924,6 +1918,9 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, if (WARN_ON(pe->tce32_seg >= 0)) return; + tbl = pe->tce32_table; + iommu_register_group(tbl, phb->hose->global_number, pe->pe_number); + /* The PE will reserve all possible 32-bits space */ pe->tce32_seg = 0; end = (1 << ilog2(phb->ioda.m32_pci_base)); @@ -1955,7 +1952,6 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, } /* Setup linux iommu table */ - tbl = pe->tce32_table; pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, 0, IOMMU_PAGE_SHIFT_4K); @@ -1975,8 +1971,6 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, iommu_init_table(tbl, phb->hose->node); if (pe->flags & PNV_IODA_PE_DEV) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); /* * Setting table base here only for carrying iommu_group * further down to let iommu_add_device() do the job. @@ -1984,14 +1978,8 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, */ set_iommu_table_base(&pe->pdev->dev, tbl); iommu_add_device(&pe->pdev->dev); - } else if (pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); + } else if (pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)) pnv_ioda_setup_bus_dma(pe, pe->pbus); - } else if (pe->flags & PNV_IODA_PE_VF) { - iommu_register_group(tbl, phb->hose->global_number, - pe->pe_number); - } /* Also create a bypass window */ if (!pnv_iommu_bypass_disabled) |