[POWERPC] pseries/phyp dump: Reserve a variable amount of space at boot

[linux-2.6] / arch / powerpc / platforms / pseries / iommu.c

diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 66665c82415cc7810a0e42787bd8d93a198e31bb..a65c763082010c8c1ff7d6fd0a8b458974fef085 100644 (file)
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -251,7 +251,7 @@ static void iommu_table_setparms(struct pci_controller *phb,
        const unsigned long *basep;
        const u32 *sizep;
 
-       node = (struct device_node *)phb->arch_data;
+       node = phb->dn;
 
        basep = of_get_property(node, "linux,tce-base", NULL);
        sizep = of_get_property(node, "linux,tce-size", NULL);
@@ -296,11 +296,12 @@ static void iommu_table_setparms(struct pci_controller *phb,
 static void iommu_table_setparms_lpar(struct pci_controller *phb,
                                      struct device_node *dn,
                                      struct iommu_table *tbl,
-                                     const void *dma_window)
+                                     const void *dma_window,
+                                     int bussubno)
 {
        unsigned long offset, size;
 
-       tbl->it_busno  = PCI_DN(dn)->bussubno;
+       tbl->it_busno  = bussubno;
        of_parse_dma_window(dn, dma_window, &tbl->it_index, &offset, &size);
 
        tbl->it_base   = 0;
@@ -420,17 +421,10 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus)
            pdn->full_name, ppci->iommu_table);
 
        if (!ppci->iommu_table) {
-               /* Bussubno hasn't been copied yet.
-                * Do it now because iommu_table_setparms_lpar needs it.
-                */
-
-               ppci->bussubno = bus->number;
-
                tbl = kmalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
                                   ppci->phb->node);
-
-               iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
-
+               iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window,
+                       bus->number);
                ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node);
                DBG("  created table: %p\n", ppci->iommu_table);
        }
@@ -504,6 +498,12 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
                        break;
        }
 
+       if (!pdn || !PCI_DN(pdn)) {
+               printk(KERN_WARNING "pci_dma_dev_setup_pSeriesLP: "
+                      "no DMA window found for pci dev=%s dn=%s\n",
+                                pci_name(dev), dn? dn->full_name : "<null>");
+               return;
+       }
        DBG("  parent is %s\n", pdn->full_name);
 
        /* Check for parent == NULL so we don't try to setup the empty EADS
@@ -514,20 +514,17 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
                dev->dev.archdata.dma_data = PCI_DN(pdn)->iommu_table;
                return;
        }
-       DBG("  found DMA window, table: %p\n", pci->iommu_table);
 
        pci = PCI_DN(pdn);
        if (!pci->iommu_table) {
-               /* iommu_table_setparms_lpar needs bussubno. */
-               pci->bussubno = pci->phb->bus->number;
-
                tbl = kmalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
                                   pci->phb->node);
-
-               iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
-
+               iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window,
+                       pci->phb->bus->number);
                pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
                DBG("  created table: %p\n", pci->iommu_table);
+       } else {
+               DBG("  found DMA window, table: %p\n", pci->iommu_table);
        }
 
        dev->dev.archdata.dma_data = pci->iommu_table;
@@ -549,7 +546,7 @@ static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long acti
        case PSERIES_RECONFIG_REMOVE:
                if (pci && pci->iommu_table &&
                    of_get_property(np, "ibm,dma-window", NULL))
-                       iommu_free_table(np);
+                       iommu_free_table(pci->iommu_table, np->full_name);
                break;
        default:
                err = NOTIFY_DONE;