diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 167 |
1 files changed, 157 insertions, 10 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a88f3cbb100..f28d933c792 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -398,11 +398,11 @@ static long list_size; static void domain_remove_dev_info(struct dmar_domain *domain); -#ifdef CONFIG_DMAR_DEFAULT_ON +#ifdef CONFIG_INTEL_IOMMU_DEFAULT_ON int dmar_disabled = 0; #else int dmar_disabled = 1; -#endif /*CONFIG_DMAR_DEFAULT_ON*/ +#endif /*CONFIG_INTEL_IOMMU_DEFAULT_ON*/ static int dmar_map_gfx = 1; static int dmar_forcedac; @@ -2157,7 +2157,7 @@ static inline int iommu_prepare_rmrr_dev(struct dmar_rmrr_unit *rmrr, rmrr->end_address); } -#ifdef CONFIG_DMAR_FLOPPY_WA +#ifdef CONFIG_INTEL_IOMMU_FLOPPY_WA static inline void iommu_prepare_isa(void) { struct pci_dev *pdev; @@ -2180,7 +2180,7 @@ static inline void iommu_prepare_isa(void) { return; } -#endif /* !CONFIG_DMAR_FLPY_WA */ +#endif /* !CONFIG_INTEL_IOMMU_FLPY_WA */ static int md_domain_init(struct dmar_domain *domain, int guest_width); @@ -2491,7 +2491,7 @@ static int __init init_dmars(void) if (iommu_pass_through) iommu_identity_mapping |= IDENTMAP_ALL; -#ifdef CONFIG_DMAR_BROKEN_GFX_WA +#ifdef CONFIG_INTEL_IOMMU_BROKEN_GFX_WA iommu_identity_mapping |= IDENTMAP_GFX; #endif @@ -3399,6 +3399,151 @@ static void __init init_iommu_pm_ops(void) static inline void init_iommu_pm_ops(void) {} #endif /* CONFIG_PM */ +LIST_HEAD(dmar_rmrr_units); + +static void __init dmar_register_rmrr_unit(struct dmar_rmrr_unit *rmrr) +{ + list_add(&rmrr->list, &dmar_rmrr_units); +} + + +int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header) +{ + struct acpi_dmar_reserved_memory *rmrr; + struct dmar_rmrr_unit *rmrru; + + rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL); + if (!rmrru) + return -ENOMEM; + + rmrru->hdr = header; + rmrr = (struct acpi_dmar_reserved_memory *)header; + rmrru->base_address = rmrr->base_address; + rmrru->end_address = rmrr->end_address; + + dmar_register_rmrr_unit(rmrru); + return 0; +} + +static int __init +rmrr_parse_dev(struct dmar_rmrr_unit *rmrru) +{ + struct acpi_dmar_reserved_memory *rmrr; + int ret; + + rmrr = (struct acpi_dmar_reserved_memory *) rmrru->hdr; + ret = dmar_parse_dev_scope((void *)(rmrr + 1), + ((void *)rmrr) + rmrr->header.length, + &rmrru->devices_cnt, &rmrru->devices, rmrr->segment); + + if (ret || (rmrru->devices_cnt == 0)) { + list_del(&rmrru->list); + kfree(rmrru); + } + return ret; +} + +static LIST_HEAD(dmar_atsr_units); + +int __init dmar_parse_one_atsr(struct acpi_dmar_header *hdr) +{ + struct acpi_dmar_atsr *atsr; + struct dmar_atsr_unit *atsru; + + atsr = container_of(hdr, struct acpi_dmar_atsr, header); + atsru = kzalloc(sizeof(*atsru), GFP_KERNEL); + if (!atsru) + return -ENOMEM; + + atsru->hdr = hdr; + atsru->include_all = atsr->flags & 0x1; + + list_add(&atsru->list, &dmar_atsr_units); + + return 0; +} + +static int __init atsr_parse_dev(struct dmar_atsr_unit *atsru) +{ + int rc; + struct acpi_dmar_atsr *atsr; + + if (atsru->include_all) + return 0; + + atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header); + rc = dmar_parse_dev_scope((void *)(atsr + 1), + (void *)atsr + atsr->header.length, + &atsru->devices_cnt, &atsru->devices, + atsr->segment); + if (rc || !atsru->devices_cnt) { + list_del(&atsru->list); + kfree(atsru); + } + + return rc; +} + +int dmar_find_matched_atsr_unit(struct pci_dev *dev) +{ + int i; + struct pci_bus *bus; + struct acpi_dmar_atsr *atsr; + struct dmar_atsr_unit *atsru; + + dev = pci_physfn(dev); + + list_for_each_entry(atsru, &dmar_atsr_units, list) { + atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header); + if (atsr->segment == pci_domain_nr(dev->bus)) + goto found; + } + + return 0; + +found: + for (bus = dev->bus; bus; bus = bus->parent) { + struct pci_dev *bridge = bus->self; + + if (!bridge || !pci_is_pcie(bridge) || + bridge->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE) + return 0; + + if (bridge->pcie_type == PCI_EXP_TYPE_ROOT_PORT) { + for (i = 0; i < atsru->devices_cnt; i++) + if (atsru->devices[i] == bridge) + return 1; + break; + } + } + + if (atsru->include_all) + return 1; + + return 0; +} + +int dmar_parse_rmrr_atsr_dev(void) +{ + struct dmar_rmrr_unit *rmrr, *rmrr_n; + struct dmar_atsr_unit *atsr, *atsr_n; + int ret = 0; + + list_for_each_entry_safe(rmrr, rmrr_n, &dmar_rmrr_units, list) { + ret = rmrr_parse_dev(rmrr); + if (ret) + return ret; + } + + list_for_each_entry_safe(atsr, atsr_n, &dmar_atsr_units, list) { + ret = atsr_parse_dev(atsr); + if (ret) + return ret; + } + + return ret; +} + /* * Here we only respond to action of unbound device from driver. * @@ -3448,16 +3593,12 @@ int __init intel_iommu_init(void) return -ENODEV; } - if (dmar_dev_scope_init()) { + if (dmar_dev_scope_init() < 0) { if (force_on) panic("tboot: Failed to initialize DMAR device scope\n"); return -ENODEV; } - /* - * Check the need for DMA-remapping initialization now. - * Above initialization will also be used by Interrupt-remapping. - */ if (no_iommu || dmar_disabled) return -ENODEV; @@ -3467,6 +3608,12 @@ int __init intel_iommu_init(void) return -ENODEV; } + if (list_empty(&dmar_rmrr_units)) + printk(KERN_INFO "DMAR: No RMRR found\n"); + + if (list_empty(&dmar_atsr_units)) + printk(KERN_INFO "DMAR: No ATSR found\n"); + if (dmar_init_reserved_ranges()) { if (force_on) panic("tboot: Failed to reserve iommu ranges\n"); |