diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/iommu.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index fe5117bac29a..33f3a855bfd9 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -206,7 +206,7 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum, int ret = 0; unsigned long flags; - if (npages == 1) { + if ((npages == 1) || !firmware_has_feature(FW_FEATURE_MULTITCE)) { return tce_build_pSeriesLP(tbl, tcenum, npages, uaddr, direction, attrs); } @@ -298,6 +298,9 @@ static void tce_freemulti_pSeriesLP(struct iommu_table *tbl, long tcenum, long n { u64 rc; + if (!firmware_has_feature(FW_FEATURE_MULTITCE)) + return tce_free_pSeriesLP(tbl, tcenum, npages); + rc = plpar_tce_stuff((u64)tbl->it_index, (u64)tcenum << 12, 0, npages); if (rc && printk_ratelimit()) { @@ -473,7 +476,6 @@ static int tce_setrange_multi_pSeriesLP_walk(unsigned long start_pfn, return tce_setrange_multi_pSeriesLP(start_pfn, num_pfn, arg); } - #ifdef CONFIG_PCI static void iommu_table_setparms(struct pci_controller *phb, struct device_node *dn, @@ -559,6 +561,12 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb, tbl->it_size = size >> tbl->it_page_shift; } +struct iommu_table_ops iommu_table_pseries_ops = { + .set = tce_build_pSeries, + .clear = tce_free_pSeries, + .get = tce_get_pseries +}; + static void pci_dma_bus_setup_pSeries(struct pci_bus *bus) { struct device_node *dn; @@ -627,6 +635,7 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus) pci->phb->node); iommu_table_setparms(pci->phb, dn, tbl); + tbl->it_ops = &iommu_table_pseries_ops; pci->iommu_table = iommu_init_table(tbl, pci->phb->node); iommu_register_group(tbl, pci_domain_nr(bus), 0); @@ -638,6 +647,11 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus) pr_debug("ISA/IDE, window size is 0x%llx\n", pci->phb->dma_window_size); } +struct iommu_table_ops iommu_table_lpar_multi_ops = { + .set = tce_buildmulti_pSeriesLP, + .clear = tce_freemulti_pSeriesLP, + .get = tce_get_pSeriesLP +}; static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) { @@ -672,6 +686,7 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, ppci->phb->node); iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window); + tbl->it_ops = &iommu_table_lpar_multi_ops; 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); @@ -699,6 +714,7 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev) tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, phb->node); iommu_table_setparms(phb, dn, tbl); + tbl->it_ops = &iommu_table_pseries_ops; 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, tbl); @@ -1121,6 +1137,7 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev) tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, pci->phb->node); iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window); + tbl->it_ops = &iommu_table_lpar_multi_ops; 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); @@ -1315,22 +1332,11 @@ void iommu_init_early_pSeries(void) return; if (firmware_has_feature(FW_FEATURE_LPAR)) { - if (firmware_has_feature(FW_FEATURE_MULTITCE)) { - ppc_md.tce_build = tce_buildmulti_pSeriesLP; - ppc_md.tce_free = tce_freemulti_pSeriesLP; - } else { - ppc_md.tce_build = tce_build_pSeriesLP; - ppc_md.tce_free = tce_free_pSeriesLP; - } - ppc_md.tce_get = tce_get_pSeriesLP; pseries_pci_controller_ops.dma_bus_setup = pci_dma_bus_setup_pSeriesLP; pseries_pci_controller_ops.dma_dev_setup = pci_dma_dev_setup_pSeriesLP; ppc_md.dma_set_mask = dma_set_mask_pSeriesLP; ppc_md.dma_get_required_mask = dma_get_required_mask_pSeriesLP; } else { - ppc_md.tce_build = tce_build_pSeries; - ppc_md.tce_free = tce_free_pSeries; - ppc_md.tce_get = tce_get_pseries; pseries_pci_controller_ops.dma_bus_setup = pci_dma_bus_setup_pSeries; pseries_pci_controller_ops.dma_dev_setup = pci_dma_dev_setup_pSeries; } @@ -1348,8 +1354,6 @@ static int __init disable_multitce(char *str) firmware_has_feature(FW_FEATURE_LPAR) && firmware_has_feature(FW_FEATURE_MULTITCE)) { printk(KERN_INFO "Disabling MULTITCE firmware feature\n"); - ppc_md.tce_build = tce_build_pSeriesLP; - ppc_md.tce_free = tce_free_pSeriesLP; powerpc_firmware_features &= ~FW_FEATURE_MULTITCE; } return 1; |