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[POWERPC] Add "parent" struct device for PCI host bridges 

Add a "parent" struct device to our PCI host bridge data structure so that
PCI can be rooted off another device in sysfs.

Note that arch/ppc doesn't use it, only arch/powerpc, though it's available
for both 32 and 64 bits.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2006-11-11 17:25:07 +11:00 committed by Paul Mackerras
parent 6506e7102f
commit 803d4573e6
4 changed files with 7 additions and 2 deletions
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5
arch/powerpc/kernel/pci_32.c
View File

@ -1269,7 +1269,10 @@ pcibios_init(void)
if (pci_assign_all_buses)
hose->first_busno = next_busno;
hose->last_busno = 0xff;
bus = pci_scan_bus(hose->first_busno, hose->ops, hose);
bus = pci_scan_bus_parented(hose->parent, hose->first_busno,
hose->ops, hose);
if (bus)
pci_bus_add_devices(bus);
hose->last_busno = bus->subordinate;
if (pci_assign_all_buses || next_busno <= hose->last_busno)
next_busno = hose->last_busno + pcibios_assign_bus_offset;

2
arch/powerpc/kernel/pci_64.c
View File

@ -513,7 +513,7 @@ void __devinit scan_phb(struct pci_controller *hose)
DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
bus = pci_create_bus(NULL, hose->first_busno, hose->ops, node);
bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, node);
if (bus == NULL) {
printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
hose->global_number);

1
include/asm-powerpc/pci-bridge.h
View File

@ -25,6 +25,7 @@ struct pci_controller {
int node;
void *arch_data;
struct list_head list_node;
struct device *parent;
int first_busno;
int last_busno;

1
include/asm-ppc/pci-bridge.h
View File

@ -43,6 +43,7 @@ struct pci_controller {
struct pci_controller *next;
struct pci_bus *bus;
void *arch_data;
struct device *parent;
int first_busno;
int last_busno;