projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d1e6dc91 LD |
1 | /* |
| 2 | * Code borrowed from powerpc/kernel/pci-common.c | |
| 3 | * | |
| 4 | * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM | |
| 5 | * Copyright (C) 2014 ARM Ltd. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * version 2 as published by the Free Software Foundation. | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/io.h> | |
| 15 | #include <linux/kernel.h> | |
| 16 | #include <linux/mm.h> | |
| 17 | #include <linux/of_pci.h> | |
| 18 | #include <linux/of_platform.h> | |
| 19 | #include <linux/slab.h> | |
| 20 | ||
| 21 | #include <asm/pci-bridge.h> | |
| 22 | ||
| 23 | /* | |
| 24 | * Called after each bus is probed, but before its children are examined | |
| 25 | */ | |
| 26 | void pcibios_fixup_bus(struct pci_bus *bus) | |
| 27 | { | |
| 28 | /* nothing to do, expected to be removed in the future */ | |
| 29 | } | |
| 30 | ||
| 31 | /* | |
| 32 | * We don't have to worry about legacy ISA devices, so nothing to do here | |
| 33 | */ | |
| 34 | resource_size_t pcibios_align_resource(void *data, const struct resource *res, | |
| 35 | resource_size_t size, resource_size_t align) | |
| 36 | { | |
| 37 | return res->start; | |
| 38 | } | |
| 39 | ||
| 40 | /* | |
| 41 | * Try to assign the IRQ number from DT when adding a new device | |
| 42 | */ | |
| 43 | int pcibios_add_device(struct pci_dev *dev) | |
| 44 | { | |
| 45 | dev->irq = of_irq_parse_and_map_pci(dev, 0, 0); | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | ||
| 51 | #ifdef CONFIG_PCI_DOMAINS_GENERIC | |
| 52 | static bool dt_domain_found = false; | |
| 53 | ||
| 54 | void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent) | |
| 55 | { | |
| 56 | int domain = of_get_pci_domain_nr(parent->of_node); | |
| 57 | ||
| 58 | if (domain >= 0) { | |
| 59 | dt_domain_found = true; | |
| 60 | } else if (dt_domain_found == true) { | |
| 61 | dev_err(parent, "Node %s is missing \"linux,pci-domain\" property in DT\n", | |
| 62 | parent->of_node->full_name); | |
| 63 | return; | |
| 64 | } else { | |
| 65 | domain = pci_get_new_domain_nr(); | |
| 66 | } | |
| 67 | ||
| 68 | bus->domain_nr = domain; | |
| 69 | } | |
| 70 | #endif |