842 	struct device_node *dn, *pdn;  in pci_dma_bus_setup_pSeriesLP()  local
851 	pdn = pci_dma_find(dn, &prop);  in pci_dma_bus_setup_pSeriesLP()
862 	if (!pdn) {  in pci_dma_bus_setup_pSeriesLP()
867 	ppci = PCI_DN(pdn);  in pci_dma_bus_setup_pSeriesLP()
870 		 pdn, ppci->table_group);  in pci_dma_bus_setup_pSeriesLP()
994 static void copy_property(struct device_node *pdn, const char *from, const char *to)  in copy_property()  argument
998 	src = of_find_property(pdn, from, NULL);  in copy_property()
1012 	if (of_add_property(pdn, dst)) {  in copy_property()
1013 		pr_err("Unable to add DMA window property for %pOF", pdn);  in copy_property()
1062 static bool find_existing_ddw(struct device_node *pdn, u64 *dma_addr, int *window_shift,  in find_existing_ddw()  argument
1072 		if (window->device == pdn) {  in find_existing_ddw()
1086 static struct dma_win *ddw_list_new_entry(struct device_node *pdn,  in ddw_list_new_entry()  argument
1095 	window->device = pdn;  in ddw_list_new_entry()
1105 	struct device_node *pdn;  in find_existing_ddw_windows_named()  local
1109 	for_each_node_with_property(pdn, name) {  in find_existing_ddw_windows_named()
1110 		dma64 = of_get_property(pdn, name, &len);  in find_existing_ddw_windows_named()
1112 			remove_dma_window_named(pdn, true, name, true);  in find_existing_ddw_windows_named()
1122 		window = ddw_list_new_entry(pdn, dma64);  in find_existing_ddw_windows_named()
1124 			of_node_put(pdn);  in find_existing_ddw_windows_named()
1187 	struct pci_dn *pdn;  in query_ddw()  local
1210 	pdn = PCI_DN(dn);  in query_ddw()
1211 	buid = pdn->phb->buid;  in query_ddw()
1212 	cfg_addr = ((pdn->busno << 16) | (pdn->devfn << 8));  in query_ddw()
1246 	struct pci_dn *pdn;  in create_ddw()  local
1258 	pdn = PCI_DN(dn);  in create_ddw()
1259 	buid = pdn->phb->buid;  in create_ddw()
1260 	cfg_addr = ((pdn->busno << 16) | (pdn->devfn << 8));  in create_ddw()
1279 	struct device_node *pdn;  member
1314 	struct pci_dn *pdn;  in reset_dma_window()  local
1321 	pdn = PCI_DN(dn);  in reset_dma_window()
1322 	buid = pdn->phb->buid;  in reset_dma_window()
1323 	cfg_addr = (pdn->busno << 16) | (pdn->devfn << 8);  in reset_dma_window()
1396  * pdn: the parent pe node with the ibm,dma_window property
1401 static bool enable_ddw(struct pci_dev *dev, struct device_node *pdn)  in enable_ddw()  argument
1418 	struct pci_dn *pci = PCI_DN(pdn);  in enable_ddw()
1427 	if (find_existing_ddw(pdn, &dev->dev.archdata.dma_offset, &len, &direct_mapping))  in enable_ddw()
1438 		if (fpdn->pdn == pdn)  in enable_ddw()
1450 	ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable",  in enable_ddw()
1462 	ret = query_ddw(dev, ddw_avail, &query, pdn);  in enable_ddw()
1482 		default_win = of_find_property(pdn, "ibm,dma-window", NULL);  in enable_ddw()
1486 		reset_win_ext = ddw_read_ext(pdn, DDW_EXT_RESET_DMA_WIN, NULL);  in enable_ddw()
1490 		remove_dma_window(pdn, ddw_avail, default_win, true);  in enable_ddw()
1494 		ret = query_ddw(dev, ddw_avail, &query, pdn);  in enable_ddw()
1588 	ret = of_add_property(pdn, win64);  in enable_ddw()
1591 			pdn, ret);  in enable_ddw()
1595 	window = ddw_list_new_entry(pdn, win64->value);  in enable_ddw()
1610 			clean_dma_window(pdn, win64->value);  in enable_ddw()
1663 		if (!of_find_property(pdn, "ibm,dma-window-saved", NULL))  in enable_ddw()
1664 			copy_property(pdn, "ibm,dma-window", "ibm,dma-window-saved");  in enable_ddw()
1665 		of_remove_property(pdn, default_win);  in enable_ddw()
1666 		dev_info(&dev->dev, "Removed default DMA window for %pOF\n", pdn);  in enable_ddw()
1680 	of_remove_property(pdn, win64);  in enable_ddw()
1689 	__remove_dma_window(pdn, ddw_avail, create.liobn);  in enable_ddw()
1693 		reset_dma_window(dev, pdn);  in enable_ddw()
1698 	fpdn->pdn = pdn;  in enable_ddw()
1732 				       struct device_node *pdn,  in spapr_tce_init_table_group()  argument
1735 	struct iommu_table_group  *table_group = PCI_DN(pdn)->table_group;  in spapr_tce_init_table_group()
1753 	if (!of_find_property(pdn, "ibm,dma-window", NULL))  in spapr_tce_init_table_group()
1756 	ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable",  in spapr_tce_init_table_group()
1763 	ret = query_ddw(pdev, ddw_avail, &query, pdn);  in spapr_tce_init_table_group()
1781 	struct device_node *pdn, *dn;  in pci_dma_dev_setup_pSeriesLP()  local
1797 	pdn = pci_dma_find(dn, &prop);  in pci_dma_dev_setup_pSeriesLP()
1798 	if (!pdn || !PCI_DN(pdn)) {  in pci_dma_dev_setup_pSeriesLP()
1804 	pr_debug("  parent is %pOF\n", pdn);  in pci_dma_dev_setup_pSeriesLP()
1806 	pci = PCI_DN(pdn);  in pci_dma_dev_setup_pSeriesLP()
1826 	spapr_tce_init_table_group(dev, pdn, prop);  in pci_dma_dev_setup_pSeriesLP()
1834 	struct device_node *dn = pci_device_to_OF_node(pdev), *pdn;  in iommu_bypass_supported_pSeriesLP()  local
1848 	pdn = pci_dma_find(dn, NULL);  in iommu_bypass_supported_pSeriesLP()
1849 	if (pdn && PCI_DN(pdn))  in iommu_bypass_supported_pSeriesLP()
1850 		return enable_ddw(pdev, pdn);  in iommu_bypass_supported_pSeriesLP()
1888 static void restore_default_dma_window(struct pci_dev *pdev, struct device_node *pdn)  in restore_default_dma_window()  argument
1890 	reset_dma_window(pdev, pdn);  in restore_default_dma_window()
1891 	copy_property(pdn, "ibm,dma-window-saved", "ibm,dma-window");  in restore_default_dma_window()
1894 static long remove_dynamic_dma_windows(struct pci_dev *pdev, struct device_node *pdn)  in remove_dynamic_dma_windows()  argument
1896 	struct pci_dn *pci = PCI_DN(pdn);  in remove_dynamic_dma_windows()
1901 	if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len, &direct_mapping)) {  in remove_dynamic_dma_windows()
1902 		remove_dma_window_named(pdn, true, direct_mapping ?  in remove_dynamic_dma_windows()
1918 			if (window->device == pdn) {  in remove_dynamic_dma_windows()
1936 	struct device_node *pdn;  in pseries_setup_default_iommu_config()  local
1940 	pdn = pci_dma_find_parent_node(pdev, table_group);  in pseries_setup_default_iommu_config()
1941 	if (!pdn || !PCI_DN(pdn)) {  in pseries_setup_default_iommu_config()
1942 		dev_warn(&pdev->dev, "No table_group configured for the node %pOF\n", pdn);  in pseries_setup_default_iommu_config()
1945 	pci = PCI_DN(pdn);  in pseries_setup_default_iommu_config()
1953 	restore_default_dma_window(pdev, pdn);  in pseries_setup_default_iommu_config()
1955 	default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in pseries_setup_default_iommu_config()
1956 	of_parse_dma_window(pdn, default_prop, &liobn, &offset, &size);  in pseries_setup_default_iommu_config()
1997 	struct device_node *pdn;  in spapr_tce_create_table()  local
2015 	pdn = pci_dma_find_parent_node(pdev, table_group);  in spapr_tce_create_table()
2016 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_create_table()
2017 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_create_table()
2020 	pci = PCI_DN(pdn);  in spapr_tce_create_table()
2022 	/* If the enable DDW failed for the pdn, dont retry! */  in spapr_tce_create_table()
2024 		if (fpdn->pdn == pdn) {  in spapr_tce_create_table()
2025 			dev_info(&pdev->dev, "%pOF in failed DDW device list\n", pdn);  in spapr_tce_create_table()
2040 			if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len,  in spapr_tce_create_table()
2042 				dev_warn(&pdev->dev, "%pOF: 64-bit window already present.", pdn);  in spapr_tce_create_table()
2050 			default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in spapr_tce_create_table()
2052 				if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len,  in spapr_tce_create_table()
2055 						 pdn);  in spapr_tce_create_table()
2060 				restore_default_dma_window(pdev, pdn);  in spapr_tce_create_table()
2062 				default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in spapr_tce_create_table()
2063 				of_parse_dma_window(pdn, default_prop, &liobn, &offset, &size);  in spapr_tce_create_table()
2082 	ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable",  in spapr_tce_create_table()
2090 	pr_err("%s: Calling query %pOF\n", __func__, pdn);  in spapr_tce_create_table()
2091 	ret = query_ddw(pdev, ddw_avail, &query, pdn);  in spapr_tce_create_table()
2106 		pr_err("%s: Create ddw failed %pOF\n", __func__, pdn);  in spapr_tce_create_table()
2115 	ret = of_add_property(pdn, win64);  in spapr_tce_create_table()
2117 		dev_err(&pdev->dev, "unable to add DMA window property for %pOF: %ld", pdn, ret);  in spapr_tce_create_table()
2122 	window = ddw_list_new_entry(pdn, win64->value);  in spapr_tce_create_table()
2157 	of_remove_property(pdn, win64);  in spapr_tce_create_table()
2163 	__remove_dma_window(pdn, ddw_avail, create.liobn);  in spapr_tce_create_table()
2169 	fpdn->pdn = pdn;  in spapr_tce_create_table()
2204 	struct device_node *dn = pci_device_to_OF_node(pdev), *pdn;  in spapr_tce_unset_window()  local
2221 	pdn = pci_dma_find(dn, NULL);  in spapr_tce_unset_window()
2222 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_unset_window()
2223 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_unset_window()
2228 	if (remove_dma_window_named(pdn, true, win_name, false)) {  in spapr_tce_unset_window()
2229 		pr_err("%s: The existing DDW removal failed for node %pOF\n", __func__, pdn);  in spapr_tce_unset_window()
2236 			if (window->device == pdn) {  in spapr_tce_unset_window()
2256 	fpdn->pdn = pdn;  in spapr_tce_unset_window()
2270 	struct device_node *pdn;  in spapr_tce_take_ownership()  local
2280 	pdn = pci_dma_find(dn, NULL);  in spapr_tce_take_ownership()
2281 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_take_ownership()
2282 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_take_ownership()
2296 	if (remove_dynamic_dma_windows(pdev, pdn)) {  in spapr_tce_take_ownership()
2297 		dev_warn(&pdev->dev, "The existing DDW removal failed for node %pOF\n", pdn);  in spapr_tce_take_ownership()
2306 		remove_dma_window_named(pdn, true, "ibm,dma-window", true);  in spapr_tce_take_ownership()
2477 	struct device_node *pdn, *dn = pdev->dev.of_node;  in pSeries_pci_device_group()  local
2481 	pdn = pci_dma_find(dn, NULL);  in pSeries_pci_device_group()
2482 	if (!pdn || !PCI_DN(pdn))  in pSeries_pci_device_group()
2485 	pci = PCI_DN(pdn);  in pSeries_pci_device_group()