diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index e1679a6fe468..d9c0dc5a5d35 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3625,6 +3625,60 @@ int __init dmar_parse_rmrr_atsr_dev(void) return 0; } +int dmar_iommu_notify_scope_dev(struct dmar_pci_notify_info *info) +{ + int ret = 0; + struct dmar_rmrr_unit *rmrru; + struct dmar_atsr_unit *atsru; + struct acpi_dmar_atsr *atsr; + struct acpi_dmar_reserved_memory *rmrr; + + if (!intel_iommu_enabled && system_state != SYSTEM_BOOTING) + return 0; + + list_for_each_entry(rmrru, &dmar_rmrr_units, list) { + rmrr = container_of(rmrru->hdr, + struct acpi_dmar_reserved_memory, header); + if (info->event == BUS_NOTIFY_ADD_DEVICE) { + ret = dmar_insert_dev_scope(info, (void *)(rmrr + 1), + ((void *)rmrr) + rmrr->header.length, + rmrr->segment, rmrru->devices, + rmrru->devices_cnt); + if (ret > 0) + break; + else if(ret < 0) + return ret; + } else if (info->event == BUS_NOTIFY_DEL_DEVICE) { + if (dmar_remove_dev_scope(info, rmrr->segment, + rmrru->devices, rmrru->devices_cnt)) + break; + } + } + + list_for_each_entry(atsru, &dmar_atsr_units, list) { + if (atsru->include_all) + continue; + + atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header); + if (info->event == BUS_NOTIFY_ADD_DEVICE) { + ret = dmar_insert_dev_scope(info, (void *)(atsr + 1), + (void *)atsr + atsr->header.length, + atsr->segment, atsru->devices, + atsru->devices_cnt); + if (ret > 0) + break; + else if(ret < 0) + return ret; + } else if (info->event == BUS_NOTIFY_DEL_DEVICE) { + if (dmar_remove_dev_scope(info, atsr->segment, + atsru->devices, atsru->devices_cnt)) + break; + } + } + + return 0; +} + /* * Here we only respond to action of unbound device from driver. * |