| /* |
| * FSL SoC setup code |
| * |
| * Maintained by Kumar Gala (see MAINTAINERS for contact information) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #include <linux/stddef.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/irq.h> |
| #include <linux/module.h> |
| |
| #include <asm/system.h> |
| #include <asm/atomic.h> |
| #include <asm/io.h> |
| #include <asm/pci-bridge.h> |
| #include <asm/prom.h> |
| #include <sysdev/fsl_soc.h> |
| |
| #undef DEBUG |
| |
| #ifdef DEBUG |
| #define DBG(x...) printk(x) |
| #else |
| #define DBG(x...) |
| #endif |
| |
| #ifdef CONFIG_PCI |
| int __init mpc85xx_add_bridge(struct device_node *dev) |
| { |
| int len; |
| struct pci_controller *hose; |
| struct resource rsrc; |
| const int *bus_range; |
| int primary = 1, has_address = 0; |
| phys_addr_t immr = get_immrbase(); |
| |
| DBG("Adding PCI host bridge %s\n", dev->full_name); |
| |
| /* Fetch host bridge registers address */ |
| has_address = (of_address_to_resource(dev, 0, &rsrc) == 0); |
| |
| /* Get bus range if any */ |
| bus_range = of_get_property(dev, "bus-range", &len); |
| if (bus_range == NULL || len < 2 * sizeof(int)) { |
| printk(KERN_WARNING "Can't get bus-range for %s, assume" |
| " bus 0\n", dev->full_name); |
| } |
| |
| pci_assign_all_buses = 1; |
| hose = pcibios_alloc_controller(dev); |
| if (!hose) |
| return -ENOMEM; |
| |
| hose->first_busno = bus_range ? bus_range[0] : 0; |
| hose->last_busno = bus_range ? bus_range[1] : 0xff; |
| |
| /* PCI 1 */ |
| if ((rsrc.start & 0xfffff) == 0x8000) { |
| setup_indirect_pci(hose, immr + 0x8000, immr + 0x8004); |
| } |
| /* PCI 2 */ |
| if ((rsrc.start & 0xfffff) == 0x9000) { |
| setup_indirect_pci(hose, immr + 0x9000, immr + 0x9004); |
| primary = 0; |
| } |
| |
| printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%016llx. " |
| "Firmware bus number: %d->%d\n", |
| (unsigned long long)rsrc.start, hose->first_busno, |
| hose->last_busno); |
| |
| DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", |
| hose, hose->cfg_addr, hose->cfg_data); |
| |
| /* Interpret the "ranges" property */ |
| /* This also maps the I/O region and sets isa_io/mem_base */ |
| pci_process_bridge_OF_ranges(hose, dev, primary); |
| |
| return 0; |
| } |
| |
| #endif |