4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/errno.h>
16 #include <linux/pci.h>
17 #include <linux/delay.h>
18 #include <linux/irq.h>
19 #include <linux/module.h>
21 #include <asm/system.h>
22 #include <asm/atomic.h>
24 #include <asm/pci-bridge.h>
26 #include <sysdev/fsl_soc.h>
31 #define DBG(x...) printk(x)
37 int __init mpc85xx_add_bridge(struct device_node *dev)
40 struct pci_controller *hose;
43 int primary = 1, has_address = 0;
44 phys_addr_t immr = get_immrbase();
46 DBG("Adding PCI host bridge %s\n", dev->full_name);
48 /* Fetch host bridge registers address */
49 has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
51 /* Get bus range if any */
52 bus_range = of_get_property(dev, "bus-range", &len);
53 if (bus_range == NULL || len < 2 * sizeof(int)) {
54 printk(KERN_WARNING "Can't get bus-range for %s, assume"
55 " bus 0\n", dev->full_name);
58 pci_assign_all_buses = 1;
59 hose = pcibios_alloc_controller(dev);
63 hose->first_busno = bus_range ? bus_range[0] : 0;
64 hose->last_busno = bus_range ? bus_range[1] : 0xff;
67 if ((rsrc.start & 0xfffff) == 0x8000) {
68 setup_indirect_pci(hose, immr + 0x8000, immr + 0x8004);
71 if ((rsrc.start & 0xfffff) == 0x9000) {
72 setup_indirect_pci(hose, immr + 0x9000, immr + 0x9004);
76 printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%016llx. "
77 "Firmware bus number: %d->%d\n",
78 (unsigned long long)rsrc.start, hose->first_busno,
81 DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
82 hose, hose->cfg_addr, hose->cfg_data);
84 /* Interpret the "ranges" property */
85 /* This also maps the I/O region and sets isa_io/mem_base */
86 pci_process_bridge_OF_ranges(hose, dev, primary);