diff options
Diffstat (limited to 'arch/mips/pci/pci.c')
| -rw-r--r-- | arch/mips/pci/pci.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c index 0514866fa925..271e8c4a54c7 100644 --- a/arch/mips/pci/pci.c +++ b/arch/mips/pci/pci.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/pci.h> +#include <linux/of_address.h> #include <asm/cpu-info.h> @@ -114,9 +115,63 @@ static void __devinit pcibios_scanbus(struct pci_controller *hose) pci_bus_assign_resources(bus); pci_enable_bridges(bus); } + bus->dev.of_node = hose->of_node; } } +#ifdef CONFIG_OF +void __devinit pci_load_of_ranges(struct pci_controller *hose, + struct device_node *node) +{ + const __be32 *ranges; + int rlen; + int pna = of_n_addr_cells(node); + int np = pna + 5; + + pr_info("PCI host bridge %s ranges:\n", node->full_name); + ranges = of_get_property(node, "ranges", &rlen); + if (ranges == NULL) + return; + hose->of_node = node; + + while ((rlen -= np * 4) >= 0) { + u32 pci_space; + struct resource *res = NULL; + u64 addr, size; + + pci_space = be32_to_cpup(&ranges[0]); + addr = of_translate_address(node, ranges + 3); + size = of_read_number(ranges + pna + 3, 2); + ranges += np; + switch ((pci_space >> 24) & 0x3) { + case 1: /* PCI IO space */ + pr_info(" IO 0x%016llx..0x%016llx\n", + addr, addr + size - 1); + hose->io_map_base = + (unsigned long)ioremap(addr, size); + res = hose->io_resource; + res->flags = IORESOURCE_IO; + break; + case 2: /* PCI Memory space */ + case 3: /* PCI 64 bits Memory space */ + pr_info(" MEM 0x%016llx..0x%016llx\n", + addr, addr + size - 1); + res = hose->mem_resource; + res->flags = IORESOURCE_MEM; + break; + } + if (res != NULL) { + res->start = addr; + res->name = node->full_name; + res->end = res->start + size - 1; + res->parent = NULL; + res->sibling = NULL; + res->child = NULL; + } + } +} +#endif + static DEFINE_MUTEX(pci_scan_mutex); void __devinit register_pci_controller(struct pci_controller *hose) |