head->next = NULL;
}
-static void pbus_assign_resources_sorted(const struct pci_bus *bus,
- struct resource_list_x *fail_head)
+static void __dev_sort_resources(struct pci_dev *dev,
+ struct resource_list *head)
{
- struct pci_dev *dev;
- struct resource *res;
- struct resource_list head, *list, *tmp;
- int idx;
+ u16 class = dev->class >> 8;
- head.next = NULL;
- list_for_each_entry(dev, &bus->devices, bus_list) {
- u16 class = dev->class >> 8;
+ /* Don't touch classless devices or host bridges or ioapics. */
+ if (class == PCI_CLASS_NOT_DEFINED || class == PCI_CLASS_BRIDGE_HOST)
+ return;
- /* Don't touch classless devices or host bridges or ioapics. */
- if (class == PCI_CLASS_NOT_DEFINED ||
- class == PCI_CLASS_BRIDGE_HOST)
- continue;
+ /* Don't touch ioapic devices already enabled by firmware */
+ if (class == PCI_CLASS_SYSTEM_PIC) {
+ u16 command;
+ pci_read_config_word(dev, PCI_COMMAND, &command);
+ if (command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
+ return;
+ }
- /* Don't touch ioapic devices already enabled by firmware */
- if (class == PCI_CLASS_SYSTEM_PIC) {
- u16 command;
- pci_read_config_word(dev, PCI_COMMAND, &command);
- if (command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
- continue;
- }
+ pdev_sort_resources(dev, head);
+}
- pdev_sort_resources(dev, &head);
- }
+static void __assign_resources_sorted(struct resource_list *head,
+ struct resource_list_x *fail_head)
+{
+ struct resource *res;
+ struct resource_list *list, *tmp;
+ int idx;
- for (list = head.next; list;) {
+ for (list = head->next; list;) {
res = list->res;
idx = res - &list->dev->resource[0];
+
if (pci_assign_resource(list->dev, idx)) {
- if (fail_head && !pci_is_root_bus(list->dev->bus))
- add_to_failed_list(fail_head, list->dev, res);
+ if (fail_head && !pci_is_root_bus(list->dev->bus)) {
+ /*
+ * if the failed res is for ROM BAR, and it will
+ * be enabled later, don't add it to the list
+ */
+ if (!((idx == PCI_ROM_RESOURCE) &&
+ (!(res->flags & IORESOURCE_ROM_ENABLE))))
+ add_to_failed_list(fail_head, list->dev, res);
+ }
res->start = 0;
res->end = 0;
res->flags = 0;
}
}
+static void pdev_assign_resources_sorted(struct pci_dev *dev,
+ struct resource_list_x *fail_head)
+{
+ struct resource_list head;
+
+ head.next = NULL;
+ __dev_sort_resources(dev, &head);
+ __assign_resources_sorted(&head, fail_head);
+
+}
+
+static void pbus_assign_resources_sorted(const struct pci_bus *bus,
+ struct resource_list_x *fail_head)
+{
+ struct pci_dev *dev;
+ struct resource_list head;
+
+ head.next = NULL;
+ list_for_each_entry(dev, &bus->devices, bus_list)
+ __dev_sort_resources(dev, &head);
+
+ __assign_resources_sorted(&head, fail_head);
+}
+
void pci_setup_cardbus(struct pci_bus *bus)
{
struct pci_dev *bridge = bus->self;
{
struct pci_dev *bridge = bus->self;
- if (pci_is_enabled(bridge))
- return;
-
dev_info(&bridge->dev, "PCI bridge to [bus %02x-%02x]\n",
bus->secondary, bus->subordinate);
}
if (pmem) {
b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH;
- if ((pmem & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64)
+ if ((pmem & PCI_PREF_RANGE_TYPE_MASK) ==
+ PCI_PREF_RANGE_TYPE_64) {
b_res[2].flags |= IORESOURCE_MEM_64;
+ b_res[2].flags |= PCI_PREF_RANGE_TYPE_64;
+ }
}
/* double check if bridge does support 64 bit pref */
unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_PREFETCH;
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
- r = bus->resource[i];
+ pci_bus_for_each_resource(bus, r, i) {
if (r == &ioport_resource || r == &iomem_resource)
continue;
if (r && (r->flags & type_mask) == type && !r->parent)
switch (dev->class >> 8) {
case PCI_CLASS_BRIDGE_PCI:
- pci_setup_bridge(b);
+ if (!pci_is_enabled(dev))
+ pci_setup_bridge(b);
break;
case PCI_CLASS_BRIDGE_CARDBUS:
}
EXPORT_SYMBOL(pci_bus_assign_resources);
+static void __ref __pci_bridge_assign_resources(const struct pci_dev *bridge,
+ struct resource_list_x *fail_head)
+{
+ struct pci_bus *b;
+
+ pdev_assign_resources_sorted((struct pci_dev *)bridge, fail_head);
+
+ b = bridge->subordinate;
+ if (!b)
+ return;
+
+ __pci_bus_assign_resources(b, fail_head);
+
+ switch (bridge->class >> 8) {
+ case PCI_CLASS_BRIDGE_PCI:
+ pci_setup_bridge(b);
+ break;
+
+ case PCI_CLASS_BRIDGE_CARDBUS:
+ pci_setup_cardbus(b);
+ break;
+
+ default:
+ dev_info(&bridge->dev, "not setting up bridge for bus "
+ "%04x:%02x\n", pci_domain_nr(b), b->number);
+ break;
+ }
+}
static void pci_bridge_release_resources(struct pci_bus *bus,
unsigned long type)
{
static void pci_bus_dump_res(struct pci_bus *bus)
{
- int i;
-
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
- struct resource *res = bus->resource[i];
+ struct resource *res;
+ int i;
+ pci_bus_for_each_resource(bus, res, i) {
if (!res || !res->end || !res->flags)
continue;
pci_bus_dump_resources(bus);
}
}
+
+void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)
+{
+ struct pci_bus *parent = bridge->subordinate;
+ int tried_times = 0;
+ struct resource_list_x head, *list;
+ int retval;
+ unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM |
+ IORESOURCE_PREFETCH;
+
+ head.next = NULL;
+
+again:
+ pci_bus_size_bridges(parent);
+ __pci_bridge_assign_resources(bridge, &head);
+ retval = pci_reenable_device(bridge);
+ pci_set_master(bridge);
+ pci_enable_bridges(parent);
+
+ tried_times++;
+
+ if (!head.next)
+ return;
+
+ if (tried_times >= 2) {
+ /* still fail, don't need to try more */
+ free_failed_list(&head);
+ return;
+ }
+
+ printk(KERN_DEBUG "PCI: No. %d try to assign unassigned res\n",
+ tried_times + 1);
+
+ /*
+ * Try to release leaf bridge's resources that doesn't fit resource of
+ * child device under that bridge
+ */
+ for (list = head.next; list;) {
+ struct pci_bus *bus = list->dev->bus;
+ unsigned long flags = list->flags;
+
+ pci_bus_release_bridge_resources(bus, flags & type_mask,
+ whole_subtree);
+ list = list->next;
+ }
+ /* restore size and flags */
+ for (list = head.next; list;) {
+ struct resource *res = list->res;
+
+ res->start = list->start;
+ res->end = list->end;
+ res->flags = list->flags;
+ if (list->dev->subordinate)
+ res->flags = 0;
+
+ list = list->next;
+ }
+ free_failed_list(&head);
+
+ goto again;
+}
+EXPORT_SYMBOL_GPL(pci_assign_unassigned_bridge_resources);
git.openpandora.org / pandora-kernel.git / blobdiff