static void add_resources(struct pci_root_info *info,
struct list_head *resources)
{
int i;
struct resource *res, *root, *conflict;
coalesce_windows(info, IORESOURCE_MEM);
coalesce_windows(info, IORESOURCE_IO);
for (i = 0; i < info->res_num; i++) {
res = &info->res[i];
if (res->flags & IORESOURCE_MEM)
root = &iomem_resource;
else if (res->flags & IORESOURCE_IO)
root = &ioport_resource;
else
continue;
conflict = insert_resource_conflict(root, res);
if (conflict)
dev_info(&info->bridge->dev,
"ignoring host bridge window %pR (conflicts with %s %pR)\n",
res, conflict->name, conflict);
else
pci_add_resource_offset(resources, res,
info->res_offset[i]);
}
}
static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,
struct list_head *resources)
{
struct resource *res;
unsigned long io_offset;
int i;
io_offset = (unsigned long)pci_ctrl->io_space.base;
res = &pci_ctrl->io_resource;
if (!res->flags) {
if (io_offset)
printk (KERN_ERR "I/O resource not set for host"
" bridge %d\n", pci_ctrl->index);
res->start = 0;
res->end = IO_SPACE_LIMIT;
res->flags = IORESOURCE_IO;
}
res->start += io_offset;
res->end += io_offset;
pci_add_resource_offset(resources, res, io_offset);
for (i = 0; i < 3; i++) {
res = &pci_ctrl->mem_resources[i];
if (!res->flags) {
if (i > 0)
continue;
printk(KERN_ERR "Memory resource not set for "
"host bridge %d\n", pci_ctrl->index);
res->start = 0;
res->end = ~0U;
res->flags = IORESOURCE_MEM;
}
pci_add_resource(resources, res);
}
}
/*
* Initialization. Try all known PCI access methods. Note that we support
* using both PCI BIOS and direct access: in such cases, we use I/O ports
* to access config space, but we still keep BIOS order of cards to be
* compatible with 2.0.X. This should go away some day.
*/
static int __init pcibios_init(void)
{
resource_size_t io_offset, mem_offset;
LIST_HEAD(resources);
struct pci_bus *bus;
ioport_resource.start = 0xA0000000;
ioport_resource.end = 0xDFFFFFFF;
iomem_resource.start = 0xA0000000;
iomem_resource.end = 0xDFFFFFFF;
if (insert_resource(&iomem_resource, &pci_iomem_resource) < 0)
panic("Unable to insert PCI IOMEM resource\n");
if (insert_resource(&ioport_resource, &pci_ioport_resource) < 0)
panic("Unable to insert PCI IOPORT resource\n");
if (!pci_probe)
return 0;
if (pci_check_direct() < 0) {
printk(KERN_WARNING "PCI: No PCI bus detected\n");
return 0;
}
printk(KERN_INFO "PCI: Probing PCI hardware [mempage %08x]\n",
MEM_PAGING_REG);
io_offset = pci_ioport_resource.start -
(pci_ioport_resource.start & 0x00ffffff);
mem_offset = pci_iomem_resource.start -
((pci_iomem_resource.start & 0x03ffffff) | MEM_PAGING_REG);
pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
if (!bus)
return 0;
pcibios_resource_survey();
pci_bus_add_devices(bus);
return 0;
}
static int __init pci_v3_setup_resources(struct pci_sys_data *sys)
{
if (request_resource(&iomem_resource, &non_mem)) {
printk(KERN_ERR "PCI: unable to allocate non-prefetchable "
"memory region\n");
return -EBUSY;
}
if (request_resource(&iomem_resource, &pre_mem)) {
release_resource(&non_mem);
printk(KERN_ERR "PCI: unable to allocate prefetchable "
"memory region\n");
return -EBUSY;
}
/*
* the mem resource for this bus
* the prefetch mem resource for this bus
*/
pci_add_resource_offset(&sys->resources, &non_mem, sys->mem_offset);
pci_add_resource_offset(&sys->resources, &pre_mem, sys->mem_offset);
return 1;
}
static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
{
struct pcie_port *pp;
int index;
if (nr >= num_pcie_ports)
return 0;
index = pcie_port_map[nr];
printk(KERN_INFO "PCI: bus%d uses PCIe port %d\n", sys->busnr, index);
pp = kzalloc(sizeof(*pp), GFP_KERNEL);
if (!pp)
panic("PCIe: failed to allocate pcie_port data");
sys->private_data = pp;
pp->root_bus_nr = sys->busnr;
spin_lock_init(&pp->conf_lock);
switch (index) {
case 0:
kirkwood_enable_pcie_clk("0");
pcie0_ioresources_init(pp);
pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE_IO_PHYS_BASE);
break;
case 1:
kirkwood_enable_pcie_clk("1");
pcie1_ioresources_init(pp);
pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE1_IO_PHYS_BASE);
break;
default:
panic("PCIe setup: invalid controller %d", index);
}
if (request_resource(&iomem_resource, &pp->res))
panic("Request PCIe%d Memory resource failed\n", index);
pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);
/*
* Generic PCIe unit setup.
*/
orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
orion_pcie_setup(pp->base);
return 1;
}
static int __init dove_pcie_setup(int nr, struct pci_sys_data *sys)
{
struct pcie_port *pp;
if (nr >= num_pcie_ports)
return 0;
pp = &pcie_port[nr];
sys->private_data = pp;
pp->root_bus_nr = sys->busnr;
/*
* Generic PCIe unit setup.
*/
orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
orion_pcie_setup(pp->base);
if (pp->index == 0)
pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE0_IO_PHYS_BASE);
else
pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE1_IO_PHYS_BASE);
/*
* IORESOURCE_MEM
*/
snprintf(pp->mem_space_name, sizeof(pp->mem_space_name),
"PCIe %d MEM", pp->index);
pp->mem_space_name[sizeof(pp->mem_space_name) - 1] = 0;
pp->res.name = pp->mem_space_name;
if (pp->index == 0) {
pp->res.start = DOVE_PCIE0_MEM_PHYS_BASE;
pp->res.end = pp->res.start + DOVE_PCIE0_MEM_SIZE - 1;
} else {
pp->res.start = DOVE_PCIE1_MEM_PHYS_BASE;
pp->res.end = pp->res.start + DOVE_PCIE1_MEM_SIZE - 1;
}
pp->res.flags = IORESOURCE_MEM;
if (request_resource(&iomem_resource, &pp->res))
panic("Request PCIe Memory resource failed\n");
pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);
return 1;
}
static int __init mv78xx0_pcie_setup(int nr, struct pci_sys_data *sys)
{
struct pcie_port *pp;
if (nr >= num_pcie_ports)
return 0;
pp = &pcie_port[nr];
sys->private_data = pp;
pp->root_bus_nr = sys->busnr;
/*
* Generic PCIe unit setup.
*/
orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
orion_pcie_setup(pp->base);
pci_ioremap_io(nr * SZ_64K, MV78XX0_PCIE_IO_PHYS_BASE(nr));
pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);
return 1;
}
void pci_add_resource(struct list_head *resources, struct resource *res)
{
pci_add_resource_offset(resources, res, 0);
}