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()
1662 		if (!of_find_property(pdn, "ibm,dma-window-saved", NULL))  in enable_ddw()
1663 			copy_property(pdn, "ibm,dma-window", "ibm,dma-window-saved");  in enable_ddw()
1664 		of_remove_property(pdn, default_win);  in enable_ddw()
1665 		dev_info(&dev->dev, "Removed default DMA window for %pOF\n", pdn);  in enable_ddw()
1679 	of_remove_property(pdn, win64);  in enable_ddw()
1688 	__remove_dma_window(pdn, ddw_avail, create.liobn);  in enable_ddw()
1692 		reset_dma_window(dev, pdn);  in enable_ddw()
1697 	fpdn->pdn = pdn;  in enable_ddw()
1731 				       struct device_node *pdn,  in spapr_tce_init_table_group()  argument
1734 	struct iommu_table_group  *table_group = PCI_DN(pdn)->table_group;  in spapr_tce_init_table_group()
1752 	if (!of_find_property(pdn, "ibm,dma-window", NULL))  in spapr_tce_init_table_group()
1755 	ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable",  in spapr_tce_init_table_group()
1762 	ret = query_ddw(pdev, ddw_avail, &query, pdn);  in spapr_tce_init_table_group()
1780 	struct device_node *pdn, *dn;  in pci_dma_dev_setup_pSeriesLP()  local
1796 	pdn = pci_dma_find(dn, &prop);  in pci_dma_dev_setup_pSeriesLP()
1797 	if (!pdn || !PCI_DN(pdn)) {  in pci_dma_dev_setup_pSeriesLP()
1803 	pr_debug("  parent is %pOF\n", pdn);  in pci_dma_dev_setup_pSeriesLP()
1805 	pci = PCI_DN(pdn);  in pci_dma_dev_setup_pSeriesLP()
1825 	spapr_tce_init_table_group(dev, pdn, prop);  in pci_dma_dev_setup_pSeriesLP()
1833 	struct device_node *dn = pci_device_to_OF_node(pdev), *pdn;  in iommu_bypass_supported_pSeriesLP()  local
1847 	pdn = pci_dma_find(dn, NULL);  in iommu_bypass_supported_pSeriesLP()
1848 	if (pdn && PCI_DN(pdn))  in iommu_bypass_supported_pSeriesLP()
1849 		return enable_ddw(pdev, pdn);  in iommu_bypass_supported_pSeriesLP()
1887 static void restore_default_dma_window(struct pci_dev *pdev, struct device_node *pdn)  in restore_default_dma_window()  argument
1889 	reset_dma_window(pdev, pdn);  in restore_default_dma_window()
1890 	copy_property(pdn, "ibm,dma-window-saved", "ibm,dma-window");  in restore_default_dma_window()
1893 static long remove_dynamic_dma_windows(struct pci_dev *pdev, struct device_node *pdn)  in remove_dynamic_dma_windows()  argument
1895 	struct pci_dn *pci = PCI_DN(pdn);  in remove_dynamic_dma_windows()
1900 	if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len, &direct_mapping)) {  in remove_dynamic_dma_windows()
1901 		remove_dma_window_named(pdn, true, direct_mapping ?  in remove_dynamic_dma_windows()
1917 			if (window->device == pdn) {  in remove_dynamic_dma_windows()
1935 	struct device_node *pdn;  in pseries_setup_default_iommu_config()  local
1939 	pdn = pci_dma_find_parent_node(pdev, table_group);  in pseries_setup_default_iommu_config()
1940 	if (!pdn || !PCI_DN(pdn)) {  in pseries_setup_default_iommu_config()
1941 		dev_warn(&pdev->dev, "No table_group configured for the node %pOF\n", pdn);  in pseries_setup_default_iommu_config()
1944 	pci = PCI_DN(pdn);  in pseries_setup_default_iommu_config()
1952 	restore_default_dma_window(pdev, pdn);  in pseries_setup_default_iommu_config()
1954 	default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in pseries_setup_default_iommu_config()
1955 	of_parse_dma_window(pdn, default_prop, &liobn, &offset, &size);  in pseries_setup_default_iommu_config()
1996 	struct device_node *pdn;  in spapr_tce_create_table()  local
2014 	pdn = pci_dma_find_parent_node(pdev, table_group);  in spapr_tce_create_table()
2015 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_create_table()
2016 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_create_table()
2019 	pci = PCI_DN(pdn);  in spapr_tce_create_table()
2021 	/* If the enable DDW failed for the pdn, dont retry! */  in spapr_tce_create_table()
2023 		if (fpdn->pdn == pdn) {  in spapr_tce_create_table()
2024 			dev_info(&pdev->dev, "%pOF in failed DDW device list\n", pdn);  in spapr_tce_create_table()
2039 			if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len,  in spapr_tce_create_table()
2041 				dev_warn(&pdev->dev, "%pOF: 64-bit window already present.", pdn);  in spapr_tce_create_table()
2049 			default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in spapr_tce_create_table()
2051 				if (find_existing_ddw(pdn, &pdev->dev.archdata.dma_offset, &len,  in spapr_tce_create_table()
2054 						 pdn);  in spapr_tce_create_table()
2059 				restore_default_dma_window(pdev, pdn);  in spapr_tce_create_table()
2061 				default_prop = of_get_property(pdn, "ibm,dma-window", NULL);  in spapr_tce_create_table()
2062 				of_parse_dma_window(pdn, default_prop, &liobn, &offset, &size);  in spapr_tce_create_table()
2079 	ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable",  in spapr_tce_create_table()
2087 	pr_err("%s: Calling query %pOF\n", __func__, pdn);  in spapr_tce_create_table()
2088 	ret = query_ddw(pdev, ddw_avail, &query, pdn);  in spapr_tce_create_table()
2103 		pr_err("%s: Create ddw failed %pOF\n", __func__, pdn);  in spapr_tce_create_table()
2112 	ret = of_add_property(pdn, win64);  in spapr_tce_create_table()
2114 		dev_err(&pdev->dev, "unable to add DMA window property for %pOF: %ld", pdn, ret);  in spapr_tce_create_table()
2119 	window = ddw_list_new_entry(pdn, win64->value);  in spapr_tce_create_table()
2154 	of_remove_property(pdn, win64);  in spapr_tce_create_table()
2160 	__remove_dma_window(pdn, ddw_avail, create.liobn);  in spapr_tce_create_table()
2166 	fpdn->pdn = pdn;  in spapr_tce_create_table()
2201 	struct device_node *dn = pci_device_to_OF_node(pdev), *pdn;  in spapr_tce_unset_window()  local
2215 	pdn = pci_dma_find(dn, NULL);  in spapr_tce_unset_window()
2216 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_unset_window()
2217 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_unset_window()
2222 	if (remove_dma_window_named(pdn, true, win_name, false)) {  in spapr_tce_unset_window()
2223 		pr_err("%s: The existing DDW removal failed for node %pOF\n", __func__, pdn);  in spapr_tce_unset_window()
2230 			if (window->device == pdn) {  in spapr_tce_unset_window()
2250 	fpdn->pdn = pdn;  in spapr_tce_unset_window()
2264 	struct device_node *pdn;  in spapr_tce_take_ownership()  local
2274 	pdn = pci_dma_find(dn, NULL);  in spapr_tce_take_ownership()
2275 	if (!pdn || !PCI_DN(pdn)) { /* Niether of 32s|64-bit exist! */  in spapr_tce_take_ownership()
2276 		dev_warn(&pdev->dev, "No dma-windows exist for the node %pOF\n", pdn);  in spapr_tce_take_ownership()
2290 	if (remove_dynamic_dma_windows(pdev, pdn)) {  in spapr_tce_take_ownership()
2291 		dev_warn(&pdev->dev, "The existing DDW removal failed for node %pOF\n", pdn);  in spapr_tce_take_ownership()
2300 		remove_dma_window_named(pdn, true, "ibm,dma-window", true);  in spapr_tce_take_ownership()
2471 	struct device_node *pdn, *dn = pdev->dev.of_node;  in pSeries_pci_device_group()  local
2475 	pdn = pci_dma_find(dn, NULL);  in pSeries_pci_device_group()
2476 	if (!pdn || !PCI_DN(pdn))  in pSeries_pci_device_group()
2479 	pci = PCI_DN(pdn);  in pSeries_pci_device_group()