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path: root/arch/ppc64/kernel/pSeries_iommu.c
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Diffstat (limited to 'arch/ppc64/kernel/pSeries_iommu.c')
-rw-r--r--arch/ppc64/kernel/pSeries_iommu.c72
1 files changed, 41 insertions, 31 deletions
diff --git a/arch/ppc64/kernel/pSeries_iommu.c b/arch/ppc64/kernel/pSeries_iommu.c
index 9d5e1e7fc389..f0fd7fbd6531 100644
--- a/arch/ppc64/kernel/pSeries_iommu.c
+++ b/arch/ppc64/kernel/pSeries_iommu.c
@@ -295,7 +295,7 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
struct iommu_table *tbl,
unsigned int *dma_window)
{
- tbl->it_busno = dn->bussubno;
+ tbl->it_busno = PCI_DN(dn)->bussubno;
/* TODO: Parse field size properties properly. */
tbl->it_size = (((unsigned long)dma_window[4] << 32) |
@@ -311,6 +311,7 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
static void iommu_bus_setup_pSeries(struct pci_bus *bus)
{
struct device_node *dn, *pdn;
+ struct pci_dn *pci;
struct iommu_table *tbl;
DBG("iommu_bus_setup_pSeries, bus %p, bus->self %p\n", bus, bus->self);
@@ -325,6 +326,7 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
*/
dn = pci_bus_to_OF_node(bus);
+ pci = dn->data;
if (!bus->self) {
/* Root bus */
@@ -341,18 +343,18 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
* alltogether. This leaves 768MB for the window.
*/
DBG("PHB has io-hole, reserving 256MB\n");
- dn->phb->dma_window_size = 3 << 28;
- dn->phb->dma_window_base_cur = 1 << 28;
+ pci->phb->dma_window_size = 3 << 28;
+ pci->phb->dma_window_base_cur = 1 << 28;
} else {
/* 1GB window by default */
- dn->phb->dma_window_size = 1 << 30;
- dn->phb->dma_window_base_cur = 0;
+ pci->phb->dma_window_size = 1 << 30;
+ pci->phb->dma_window_base_cur = 0;
}
tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
- iommu_table_setparms(dn->phb, dn, tbl);
- dn->iommu_table = iommu_init_table(tbl);
+ iommu_table_setparms(pci->phb, dn, tbl);
+ pci->iommu_table = iommu_init_table(tbl);
} else {
/* Do a 128MB table at root. This is used for the IDE
* controller on some SMP-mode POWER4 machines. It
@@ -363,16 +365,16 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
* Allocate at offset 128MB to avoid having to deal
* with ISA holes; 128MB table for IDE is plenty.
*/
- dn->phb->dma_window_size = 1 << 27;
- dn->phb->dma_window_base_cur = 1 << 27;
+ pci->phb->dma_window_size = 1 << 27;
+ pci->phb->dma_window_base_cur = 1 << 27;
tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
- iommu_table_setparms(dn->phb, dn, tbl);
- dn->iommu_table = iommu_init_table(tbl);
+ iommu_table_setparms(pci->phb, dn, tbl);
+ pci->iommu_table = iommu_init_table(tbl);
/* All child buses have 256MB tables */
- dn->phb->dma_window_size = 1 << 28;
+ pci->phb->dma_window_size = 1 << 28;
}
} else {
pdn = pci_bus_to_OF_node(bus->parent);
@@ -386,12 +388,12 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
- iommu_table_setparms(dn->phb, dn, tbl);
+ iommu_table_setparms(pci->phb, dn, tbl);
- dn->iommu_table = iommu_init_table(tbl);
+ pci->iommu_table = iommu_init_table(tbl);
} else {
/* Lower than first child or under python, use parent table */
- dn->iommu_table = pdn->iommu_table;
+ pci->iommu_table = PCI_DN(pdn)->iommu_table;
}
}
}
@@ -401,6 +403,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
{
struct iommu_table *tbl;
struct device_node *dn, *pdn;
+ struct pci_dn *ppci;
unsigned int *dma_window = NULL;
DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus, bus->self);
@@ -419,22 +422,24 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
return;
}
- if (!pdn->iommu_table) {
+ ppci = pdn->data;
+ if (!ppci->iommu_table) {
/* Bussubno hasn't been copied yet.
* Do it now because iommu_table_setparms_lpar needs it.
*/
- pdn->bussubno = bus->number;
+
+ ppci->bussubno = bus->number;
tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table),
GFP_KERNEL);
- iommu_table_setparms_lpar(pdn->phb, pdn, tbl, dma_window);
+ iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
- pdn->iommu_table = iommu_init_table(tbl);
+ ppci->iommu_table = iommu_init_table(tbl);
}
if (pdn != dn)
- dn->iommu_table = pdn->iommu_table;
+ PCI_DN(dn)->iommu_table = ppci->iommu_table;
}
@@ -449,11 +454,11 @@ static void iommu_dev_setup_pSeries(struct pci_dev *dev)
*/
mydn = dn = pci_device_to_OF_node(dev);
- while (dn && dn->iommu_table == NULL)
+ while (dn && dn->data && PCI_DN(dn)->iommu_table == NULL)
dn = dn->parent;
- if (dn) {
- mydn->iommu_table = dn->iommu_table;
+ if (dn && dn->data) {
+ PCI_DN(mydn)->iommu_table = PCI_DN(dn)->iommu_table;
} else {
DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, dev->pretty_name);
}
@@ -463,10 +468,11 @@ static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long acti
{
int err = NOTIFY_OK;
struct device_node *np = node;
+ struct pci_dn *pci = np->data;
switch (action) {
case PSERIES_RECONFIG_REMOVE:
- if (np->iommu_table &&
+ if (pci->iommu_table &&
get_property(np, "ibm,dma-window", NULL))
iommu_free_table(np);
break;
@@ -486,6 +492,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
struct device_node *pdn, *dn;
struct iommu_table *tbl;
int *dma_window = NULL;
+ struct pci_dn *pci;
DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, dev->pretty_name);
@@ -497,8 +504,10 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
*/
dn = pci_device_to_OF_node(dev);
- for (pdn = dn; pdn && !pdn->iommu_table; pdn = pdn->parent) {
- dma_window = (unsigned int *)get_property(pdn, "ibm,dma-window", NULL);
+ for (pdn = dn; pdn && pdn->data && !PCI_DN(pdn)->iommu_table;
+ pdn = pdn->parent) {
+ dma_window = (unsigned int *)
+ get_property(pdn, "ibm,dma-window", NULL);
if (dma_window)
break;
}
@@ -515,20 +524,21 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
DBG("Found DMA window, allocating table\n");
}
- if (!pdn->iommu_table) {
+ pci = pdn->data;
+ if (!pci->iommu_table) {
/* iommu_table_setparms_lpar needs bussubno. */
- pdn->bussubno = pdn->phb->bus->number;
+ pci->bussubno = pci->phb->bus->number;
tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table),
GFP_KERNEL);
- iommu_table_setparms_lpar(pdn->phb, pdn, tbl, dma_window);
+ iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
- pdn->iommu_table = iommu_init_table(tbl);
+ pci->iommu_table = iommu_init_table(tbl);
}
if (pdn != dn)
- dn->iommu_table = pdn->iommu_table;
+ PCI_DN(dn)->iommu_table = pci->iommu_table;
}
static void iommu_bus_setup_null(struct pci_bus *b) { }
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