platforms/pseries/iommu.c

20 #include <linux/pci.h>
32 #include <asm/pci-bridge.h>
36 #include <asm/ppc-pci.h>
589 	struct pci_dn *pci;
602 	pci = PCI_DN(dn);
628 		pci->phb->dma_window_size = 0x80000000ul; /* To be divided */
630 		while (pci->phb->dma_window_size * children > 0x80000000ul)
631 			pci->phb->dma_window_size >>= 1;
633 			 pci->phb->dma_window_size);
634 		pci->phb->dma_window_base_cur = 0;
644 	pci->phb->dma_window_size = 0x8000000ul;
645 	pci->phb->dma_window_base_cur = 0x8000000ul;
647 	pci->table_group = iommu_pseries_alloc_group(pci->phb->node);
648 	tbl = pci->table_group->tables[0];
650 	iommu_table_setparms(pci->phb, dn, tbl);
652 	if (!iommu_init_table(tbl, pci->phb->node, 0, 0))
656 	pci->phb->dma_window_size = 0x80000000ul;
657 	while (pci->phb->dma_window_size * children > 0x70000000ul)
658 		pci->phb->dma_window_size >>= 1;
660 	pr_debug("ISA/IDE, window size is 0x%llx\n", pci->phb->dma_window_size);
1105 	 * Retrieve them from the pci device, not the node with the
1153 	 * Retrieve them from the pci device, not the node with the
1294  * dev: the pci device we are checking
1316 	struct pci_dn *pci = PCI_DN(pdn);
1375 		if (iommu_table_in_use(pci->table_group->tables[0])) {
1491 		for (i = 0; i < ARRAY_SIZE(pci->phb->mem_resources); i++) {
1495 			if ((pci->phb->mem_resources[i].flags & mask) == IORESOURCE_MEM) {
1496 				start = pci->phb->mem_resources[i].start;
1497 				end = pci->phb->mem_resources[i].end;
1503 		newtbl = iommu_pseries_alloc_table(pci->phb->node);
1509 		iommu_table_setparms_common(newtbl, pci->phb->bus->number, create.liobn, win_addr,
1511 		iommu_init_table(newtbl, pci->phb->node, start, end);
1513 		pci->table_group->tables[1] = newtbl;
1519 		iommu_tce_table_put(pci->table_group->tables[0]);
1520 		pci->table_group->tables[0] = NULL;
1577 	struct pci_dn *pci;
1594 		       "no DMA window found for pci dev=%s dn=%pOF\n",
1600 	pci = PCI_DN(pdn);
1601 	if (!pci->table_group) {
1602 		pci->table_group = iommu_pseries_alloc_group(pci->phb->node);
1603 		tbl = pci->table_group->tables[0];
1605 		iommu_table_setparms_common(tbl, pci->phb->bus->number,
1616 		pci->table_group->tce32_start = be64_to_cpu(prop.dma_base);
1617 		pci->table_group->tce32_size = 1 << be32_to_cpu(prop.window_shift);
1619 		iommu_init_table(tbl, pci->phb->node, 0, 0);
1620 		iommu_register_group(pci->table_group,
1621 				pci_domain_nr(pci->phb->bus), 0);
1622 		pr_debug("  created table: %p\n", pci->table_group);
1624 		pr_debug("  found DMA window, table: %p\n", pci->table_group);
1627 	set_iommu_table_base(&dev->dev, pci->table_group->tables[0]);
1628 	iommu_add_device(pci->table_group, &dev->dev);
1703 	struct pci_dn *pci = PCI_DN(np);
1718 		if (pci && pci->table_group)
1719 			iommu_pseries_free_group(pci->table_group,
1788 	struct pci_dn *pci;
1794 	pci = PCI_DN(pdn);
1795 	if (!pci->table_group)
1798 	grp = pci->table_group->group;