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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | /* * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp. * <benh@kernel.crashing.org> * and Arnd Bergmann, IBM Corp. * * 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. * */ #undef DEBUG #include <linux/string.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/export.h> #include <linux/mod_devicetable.h> #include <linux/pci.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_platform.h> #include <linux/atomic.h> #include <asm/errno.h> #include <asm/topology.h> #include <asm/pci-bridge.h> #include <asm/ppc-pci.h> #include <asm/eeh.h> #ifdef CONFIG_PPC_OF_PLATFORM_PCI /* The probing of PCI controllers from of_platform is currently * 64 bits only, mostly due to gratuitous differences between * the 32 and 64 bits PCI code on PowerPC and the 32 bits one * lacking some bits needed here. */ static int __devinit of_pci_phb_probe(struct platform_device *dev) { struct pci_controller *phb; /* Check if we can do that ... */ if (ppc_md.pci_setup_phb == NULL) return -ENODEV; pr_info("Setting up PCI bus %s\n", dev->dev.of_node->full_name); /* Alloc and setup PHB data structure */ phb = pcibios_alloc_controller(dev->dev.of_node); if (!phb) return -ENODEV; /* Setup parent in sysfs */ phb->parent = &dev->dev; /* Setup the PHB using arch provided callback */ if (ppc_md.pci_setup_phb(phb)) { pcibios_free_controller(phb); return -ENODEV; } /* Process "ranges" property */ pci_process_bridge_OF_ranges(phb, dev->dev.of_node, 0); /* Init pci_dn data structures */ pci_devs_phb_init_dynamic(phb); /* Create EEH devices for the PHB */ eeh_dev_phb_init_dynamic(phb); /* Register devices with EEH */ #ifdef CONFIG_EEH if (dev->dev.of_node->child) eeh_add_device_tree_early(dev->dev.of_node); #endif /* CONFIG_EEH */ /* Scan the bus */ pcibios_scan_phb(phb); if (phb->bus == NULL) return -ENXIO; /* Claim resources. This might need some rework as well depending * wether we are doing probe-only or not, like assigning unassigned * resources etc... */ pcibios_claim_one_bus(phb->bus); /* Finish EEH setup */ #ifdef CONFIG_EEH eeh_add_device_tree_late(phb->bus); #endif /* Add probed PCI devices to the device model */ pci_bus_add_devices(phb->bus); return 0; } static struct of_device_id of_pci_phb_ids[] = { { .type = "pci", }, { .type = "pcix", }, { .type = "pcie", }, { .type = "pciex", }, { .type = "ht", }, {} }; static struct platform_driver of_pci_phb_driver = { .probe = of_pci_phb_probe, .driver = { .name = "of-pci", .owner = THIS_MODULE, .of_match_table = of_pci_phb_ids, }, }; static __init int of_pci_phb_init(void) { return platform_driver_register(&of_pci_phb_driver); } device_initcall(of_pci_phb_init); #endif /* CONFIG_PPC_OF_PLATFORM_PCI */ |