iommu.c (9874777016e06ad2df420237963e81389776cb6d) iommu.c (bed59275810a55500e885cbdc5c2a0507f13c00e)
1/*
2 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
3 *
4 * Rewrite, cleanup:
5 *
6 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
7 * Copyright (C) 2006 Olof Johansson <olof@lixom.net>
8 *

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237 printk("\tindex = 0x%lx\n", (u64)tbl->it_index);
238 printk("\ttcenum = 0x%lx\n", (u64)tcenum);
239 show_stack(current, (unsigned long *)__get_SP());
240 }
241
242 return tce_ret;
243}
244
1/*
2 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
3 *
4 * Rewrite, cleanup:
5 *
6 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
7 * Copyright (C) 2006 Olof Johansson <olof@lixom.net>
8 *

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237 printk("\tindex = 0x%lx\n", (u64)tbl->it_index);
238 printk("\ttcenum = 0x%lx\n", (u64)tcenum);
239 show_stack(current, (unsigned long *)__get_SP());
240 }
241
242 return tce_ret;
243}
244
245#ifdef CONFIG_PCI
245static void iommu_table_setparms(struct pci_controller *phb,
246 struct device_node *dn,
247 struct iommu_table *tbl)
248{
249 struct device_node *node;
250 const unsigned long *basep;
251 const u32 *sizep;
252

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473
474 if (dn && PCI_DN(dn))
475 dev->dev.archdata.dma_data = PCI_DN(dn)->iommu_table;
476 else
477 printk(KERN_WARNING "iommu: Device %s has no iommu table\n",
478 pci_name(dev));
479}
480
246static void iommu_table_setparms(struct pci_controller *phb,
247 struct device_node *dn,
248 struct iommu_table *tbl)
249{
250 struct device_node *node;
251 const unsigned long *basep;
252 const u32 *sizep;
253

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474
475 if (dn && PCI_DN(dn))
476 dev->dev.archdata.dma_data = PCI_DN(dn)->iommu_table;
477 else
478 printk(KERN_WARNING "iommu: Device %s has no iommu table\n",
479 pci_name(dev));
480}
481
481static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
482{
483 int err = NOTIFY_OK;
484 struct device_node *np = node;
485 struct pci_dn *pci = PCI_DN(np);
486
487 switch (action) {
488 case PSERIES_RECONFIG_REMOVE:
489 if (pci && pci->iommu_table &&
490 get_property(np, "ibm,dma-window", NULL))
491 iommu_free_table(np);
492 break;
493 default:
494 err = NOTIFY_DONE;
495 break;
496 }
497 return err;
498}
499
500static struct notifier_block iommu_reconfig_nb = {
501 .notifier_call = iommu_reconfig_notifier,
502};
503
504static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
505{
506 struct device_node *pdn, *dn;
507 struct iommu_table *tbl;
508 const void *dma_window = NULL;
509 struct pci_dn *pci;
510
511 DBG("pci_dma_dev_setup_pSeriesLP: %s\n", pci_name(dev));

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549 iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
550
551 pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
552 DBG(" created table: %p\n", pci->iommu_table);
553 }
554
555 dev->dev.archdata.dma_data = pci->iommu_table;
556}
482static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
483{
484 struct device_node *pdn, *dn;
485 struct iommu_table *tbl;
486 const void *dma_window = NULL;
487 struct pci_dn *pci;
488
489 DBG("pci_dma_dev_setup_pSeriesLP: %s\n", pci_name(dev));

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527 iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
528
529 pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
530 DBG(" created table: %p\n", pci->iommu_table);
531 }
532
533 dev->dev.archdata.dma_data = pci->iommu_table;
534}
535#else /* CONFIG_PCI */
536#define pci_dma_bus_setup_pSeries NULL
537#define pci_dma_dev_setup_pSeries NULL
538#define pci_dma_bus_setup_pSeriesLP NULL
539#define pci_dma_dev_setup_pSeriesLP NULL
540#endif /* !CONFIG_PCI */
557
541
542static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
543{
544 int err = NOTIFY_OK;
545 struct device_node *np = node;
546 struct pci_dn *pci = PCI_DN(np);
547
548 switch (action) {
549 case PSERIES_RECONFIG_REMOVE:
550 if (pci && pci->iommu_table &&
551 get_property(np, "ibm,dma-window", NULL))
552 iommu_free_table(np);
553 break;
554 default:
555 err = NOTIFY_DONE;
556 break;
557 }
558 return err;
559}
560
561static struct notifier_block iommu_reconfig_nb = {
562 .notifier_call = iommu_reconfig_notifier,
563};
564
558/* These are called very early. */
559void iommu_init_early_pSeries(void)
560{
561 if (of_chosen && get_property(of_chosen, "linux,iommu-off", NULL)) {
562 /* Direct I/O, IOMMU off */
563 ppc_md.pci_dma_dev_setup = NULL;
564 ppc_md.pci_dma_bus_setup = NULL;
565 set_pci_dma_ops(&dma_direct_ops);

--- 28 unchanged lines hidden --- 		565/* These are called very early. */
566void iommu_init_early_pSeries(void)
567{
568 if (of_chosen && get_property(of_chosen, "linux,iommu-off", NULL)) {
569 /* Direct I/O, IOMMU off */
570 ppc_md.pci_dma_dev_setup = NULL;
571 ppc_md.pci_dma_bus_setup = NULL;
572 set_pci_dma_ops(&dma_direct_ops);

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