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microblaze/PCI: convert to pci_create_root_bus() for correct root bus resources

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Convert from pci_create_bus() to pci_create_root_bus().  This way the root
bus resources are correct immediately.  This patch doesn't fix a problem
because microblaze fixed the resources before scanning the bus, but it makes
microblaze more consistent with other architectures.  It also allows us to
use the pci_scan_root_bus() path safely.

CC: Michal Simek <monstr@monstr.eu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Bjorn Helgaas 2011-10-28 16:26:46 -06:00 committed by Jesse Barnes
parent ce78fc6b28
commit 58de74b805
1 changed files with 15 additions and 15 deletions
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30
arch/microblaze/pci/pci-common.c
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@ -1513,14 +1513,18 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask);
}
static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, struct list_head *resources)
{
struct pci_bus *bus = hose->bus;
struct resource *res;
int i;
/* Hookup PHB IO resource */
bus->resource[0] = res = &hose->io_resource;
res = &hose->io_resource;
/* Fixup IO space offset */
io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
res->start = (res->start + io_offset) & 0xffffffffu;
res->end = (res->end + io_offset) & 0xffffffffu;
if (!res->flags) {
printk(KERN_WARNING "PCI: I/O resource not set for host"
@ -1531,6 +1535,7 @@ static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
res->end = res->start + IO_SPACE_LIMIT;
res->flags = IORESOURCE_IO;
}
pci_add_resource(resources, res);
pr_debug("PCI: PHB IO resource = %016llx-%016llx [%lx]\n",
(unsigned long long)res->start,
@ -1553,7 +1558,7 @@ static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
res->flags = IORESOURCE_MEM;
}
bus->resource[i+1] = res;
pci_add_resource(resources, res);
pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n",
i, (unsigned long long)res->start,
@ -1576,32 +1581,27 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
static void __devinit pcibios_scan_phb(struct pci_controller *hose)
{
LIST_HEAD(resources);
struct pci_bus *bus;
struct device_node *node = hose->dn;
unsigned long io_offset;
struct resource *res = &hose->io_resource;
pr_debug("PCI: Scanning PHB %s\n",
node ? node->full_name : "<NO NAME>");
pcibios_setup_phb_resources(hose, &resources);
/* Create an empty bus for the toplevel */
bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
bus = pci_create_root_bus(hose->parent, hose->first_busno, hose->ops,
hose, &resources);
if (bus == NULL) {
printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
hose->global_number);
pci_free_resource_list(&resources);
return;
}
bus->secondary = hose->first_busno;
hose->bus = bus;
/* Fixup IO space offset */
io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
res->start = (res->start + io_offset) & 0xffffffffu;
res->end = (res->end + io_offset) & 0xffffffffu;
/* Wire up PHB bus resources */
pcibios_setup_phb_resources(hose);
/* Scan children */
hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
}