===================================================================
@@ -53,19 +53,18 @@ static int __ref pciehp_add_bridge(struc
busnr = pci_scan_bridge(parent, dev, busnr, pass);
if (!dev->subordinate)
return -1;
- pci_bus_size_bridges(dev->subordinate);
- pci_bus_assign_resources(parent);
- pci_enable_bridges(parent);
- pci_bus_add_devices(parent);
+
return 0;
}
int pciehp_configure_device(struct slot *p_slot)
{
struct pci_dev *dev;
- struct pci_bus *parent = p_slot->ctrl->pcie->port->subordinate;
+ struct pci_dev *bridge = p_slot->ctrl->pcie->port;
+ struct pci_bus *parent = bridge->subordinate;
int num, fn;
struct controller *ctrl = p_slot->ctrl;
+ int retval;
dev = pci_get_slot(parent, PCI_DEVFN(0, 0));
if (dev) {
@@ -96,12 +95,30 @@ int pciehp_configure_device(struct slot
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
}
+ pci_dev_put(dev);
+ }
+
+ pci_bus_size_bridges(parent);
+ pci_clear_master(bridge);
+ pci_bridge_assign_resources(bridge);
+ retval = pci_reenable_device(bridge);
+ pci_set_master(bridge);
+ pci_enable_bridges(parent);
+
+ for (fn = 0; fn < 8; fn++) {
+ dev = pci_get_slot(parent, PCI_DEVFN(0, fn));
+ if (!dev)
+ continue;
+ if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
+ pci_dev_put(dev);
+ continue;
+ }
pci_configure_slot(dev);
pci_dev_put(dev);
}
- pci_bus_assign_resources(parent);
pci_bus_add_devices(parent);
+
return 0;
}
@@ -155,5 +172,7 @@ int pciehp_unconfigure_device(struct slo
pci_dev_put(temp);
}
+ pci_bus_release_bridges_not_used_res(parent);
+
return rc;
}
===================================================================
@@ -27,6 +27,44 @@
#include <linux/slab.h>
#include "pci.h"
+static void pdev_assign_resources_sorted(struct pci_dev *dev)
+{
+ struct resource *res;
+ struct resource_list head, *list, *tmp;
+ int idx;
+ u16 class = dev->class >> 8;
+
+ head.next = NULL;
+
+ /* 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 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;
+ }
+
+ pdev_sort_resources(dev, &head);
+
+ for (list = head.next; list;) {
+ res = list->res;
+ idx = res - &list->dev->resource[0];
+ if (pci_assign_resource(list->dev, idx)) {
+ res->start = 0;
+ res->end = 0;
+ res->flags = 0;
+ }
+ tmp = list;
+ list = list->next;
+ kfree(tmp);
+ }
+}
+
static void pbus_assign_resources_sorted(const struct pci_bus *bus)
{
struct pci_dev *dev;
@@ -144,9 +182,6 @@ static void pci_setup_bridge(struct pci_
u32 l, bu, lu, io_upper16;
int pref_mem64;
- if (pci_is_enabled(bridge))
- return;
-
dev_info(&bridge->dev, "PCI bridge, secondary bus %04x:%02x\n",
pci_domain_nr(bus), bus->number);
@@ -541,6 +576,35 @@ void __ref pci_bus_size_bridges(struct p
}
EXPORT_SYMBOL(pci_bus_size_bridges);
+void __ref pci_bridge_assign_resources(const struct pci_dev *bridge)
+{
+ struct pci_bus *b;
+
+ pdev_assign_resources_sorted((struct pci_dev *)bridge);
+
+ b = bridge->subordinate;
+ if (!b)
+ return;
+
+ pci_bus_assign_resources(b);
+
+ 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;
+ }
+}
+EXPORT_SYMBOL(pci_bridge_assign_resources);
+
void __ref pci_bus_assign_resources(const struct pci_bus *bus)
{
struct pci_bus *b;
@@ -557,7 +621,8 @@ void __ref pci_bus_assign_resources(cons
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:
===================================================================
@@ -756,6 +756,7 @@ ssize_t pci_write_vpd(struct pci_dev *de
int pci_vpd_truncate(struct pci_dev *dev, size_t size);
/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
+void pci_bridge_assign_resources(const struct pci_dev *bridge);
void pci_bus_assign_resources(const struct pci_bus *bus);
void pci_bus_size_bridges(struct pci_bus *bus);
void pci_bus_release_bridges_not_used_res(struct pci_bus *bus);