summaryrefslogtreecommitdiff
path: root/drivers/parisc/lba_pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/parisc/lba_pci.c')
-rw-r--r--drivers/parisc/lba_pci.c46
1 files changed, 41 insertions, 5 deletions
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index bc286cbbbc9b..a25fed52f7e9 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -667,6 +667,42 @@ extend_lmmio_len(unsigned long start, unsigned long end, unsigned long lba_len)
#define truncate_pat_collision(r,n) (0)
#endif
+static void pcibios_allocate_bridge_resources(struct pci_dev *dev)
+{
+ int idx;
+ struct resource *r;
+
+ for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
+ r = &dev->resource[idx];
+ if (!r->flags)
+ continue;
+ if (r->parent) /* Already allocated */
+ continue;
+ if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) {
+ /*
+ * Something is wrong with the region.
+ * Invalidate the resource to prevent
+ * child resource allocations in this
+ * range.
+ */
+ r->start = r->end = 0;
+ r->flags = 0;
+ }
+ }
+}
+
+static void pcibios_allocate_bus_resources(struct pci_bus *bus)
+{
+ struct pci_bus *child;
+
+ /* Depth-First Search on bus tree */
+ if (bus->self)
+ pcibios_allocate_bridge_resources(bus->self);
+ list_for_each_entry(child, &bus->children, node)
+ pcibios_allocate_bus_resources(child);
+}
+
+
/*
** The algorithm is generic code.
** But it needs to access local data structures to get the IRQ base.
@@ -693,11 +729,11 @@ lba_fixup_bus(struct pci_bus *bus)
** pci_alloc_primary_bus() mangles this.
*/
if (bus->parent) {
- int i;
/* PCI-PCI Bridge */
pci_read_bridge_bases(bus);
- for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++)
- pci_claim_bridge_resource(bus->self, i);
+
+ /* check and allocate bridge resources */
+ pcibios_allocate_bus_resources(bus);
} else {
/* Host-PCI Bridge */
int err;
@@ -1613,14 +1649,14 @@ lba_driver_probe(struct parisc_device *dev)
return 0;
}
-static struct parisc_device_id lba_tbl[] = {
+static const struct parisc_device_id lba_tbl[] __initconst = {
{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, ELROY_HVERS, 0xa },
{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, MERCURY_HVERS, 0xa },
{ HPHW_BRIDGE, HVERSION_REV_ANY_ID, QUICKSILVER_HVERS, 0xa },
{ 0, }
};
-static struct parisc_driver lba_driver = {
+static struct parisc_driver lba_driver __refdata = {
.name = MODULE_NAME,
.id_table = lba_tbl,
.probe = lba_driver_probe,