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Paul Mackerras047ea782005-11-19 20:17:32 +11001#ifndef _ASM_POWERPC_PCI_BRIDGE_H
2#define _ASM_POWERPC_PCI_BRIDGE_H
Arnd Bergmann88ced032005-12-16 22:43:46 +01003#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -07004
Paul Mackerras047ea782005-11-19 20:17:32 +11005#ifndef CONFIG_PPC64
6#include <asm-ppc/pci-bridge.h>
7#else
8
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/pci.h>
Paul Mackerras76f9f872005-10-10 22:52:26 +100010#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
12/*
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 */
18
19/*
20 * Structure of a PCI controller (host bridge)
21 */
22struct pci_controller {
23 struct pci_bus *bus;
24 char is_dynamic;
Anton Blanchard357518f2006-06-10 20:53:06 +100025 int node;
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 void *arch_data;
27 struct list_head list_node;
Benjamin Herrenschmidt803d4572006-11-11 17:25:07 +110028 struct device *parent;
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30 int first_busno;
31 int last_busno;
32
33 void __iomem *io_base_virt;
Benjamin Herrenschmidt396a1a52006-12-08 17:14:33 +110034 resource_size_t io_base_phys;
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
36 /* Some machines have a non 1:1 mapping of
37 * the PCI memory space in the CPU bus space
38 */
Benjamin Herrenschmidt396a1a52006-12-08 17:14:33 +110039 resource_size_t pci_mem_offset;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 unsigned long pci_io_size;
41
42 struct pci_ops *ops;
43 volatile unsigned int __iomem *cfg_addr;
Paul Mackerras17a63922005-10-20 21:10:09 +100044 volatile void __iomem *cfg_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46 /* Currently, we limit ourselves to 1 IO range and 3 mem
47 * ranges since the common pci_bus structure can't handle more
48 */
49 struct resource io_resource;
50 struct resource mem_resources[3];
51 int global_number;
52 int local_number;
53 unsigned long buid;
54 unsigned long dma_window_base_cur;
55 unsigned long dma_window_size;
Ishizaki Kou5b7c7262007-01-12 09:57:37 +090056
57 void *private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058};
59
Paul Mackerras16353172005-09-06 13:17:54 +100060/*
61 * PCI stuff, for nodes representing PCI devices, pointed to
62 * by device_node->data.
63 */
64struct pci_controller;
65struct iommu_table;
66
67struct pci_dn {
Linas Vepstas7684b402005-11-03 18:55:19 -060068 int busno; /* pci bus number */
69 int bussubno; /* pci subordinate bus number */
70 int devfn; /* pci device and function number */
71 int class_code; /* pci device class */
Benjamin Herrenschmidtb5166cc2005-11-15 16:05:33 +110072
73#ifdef CONFIG_PPC_PSERIES
Paul Mackerras16353172005-09-06 13:17:54 +100074 int eeh_mode; /* See eeh.h for possible EEH_MODEs */
75 int eeh_config_addr;
Linas Vepstas25e591f2005-11-03 18:53:20 -060076 int eeh_pe_config_addr; /* new-style partition endpoint address */
Paul Mackerras16353172005-09-06 13:17:54 +100077 int eeh_check_count; /* # times driver ignored error */
78 int eeh_freeze_count; /* # times this device froze up. */
Benjamin Herrenschmidtb5166cc2005-11-15 16:05:33 +110079#endif
Paul Mackerras16353172005-09-06 13:17:54 +100080 int pci_ext_config_space; /* for pci devices */
81 struct pci_controller *phb; /* for pci devices */
82 struct iommu_table *iommu_table; /* for phb's or bridges */
83 struct pci_dev *pcidev; /* back-pointer to the pci device */
84 struct device_node *node; /* back-pointer to the device_node */
85 u32 config_space[16]; /* saved PCI config space */
86};
87
88/* Get the pointer to a device_node's pci_dn */
89#define PCI_DN(dn) ((struct pci_dn *) (dn)->data)
90
Linus Torvalds1da177e2005-04-16 15:20:36 -070091struct device_node *fetch_dev_dn(struct pci_dev *dev);
92
Paul Mackerras16353172005-09-06 13:17:54 +100093/* Get a device_node from a pci_dev. This code must be fast except
94 * in the case where the sysdata is incorrect and needs to be fixed
95 * up (this will only happen once).
96 * In this case the sysdata will have been inherited from a PCI host
97 * bridge or a PCI-PCI bridge further up the tree, so it will point
98 * to a valid struct pci_dn, just not the one we want.
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 */
100static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
101{
102 struct device_node *dn = dev->sysdata;
Paul Mackerras16353172005-09-06 13:17:54 +1000103 struct pci_dn *pdn = dn->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
Paul Mackerras16353172005-09-06 13:17:54 +1000105 if (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 return dn; /* fast path. sysdata is good */
Paul Mackerras16353172005-09-06 13:17:54 +1000107 return fetch_dev_dn(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108}
109
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000110static inline int pci_device_from_OF_node(struct device_node *np,
111 u8 *bus, u8 *devfn)
112{
113 if (!PCI_DN(np))
114 return -ENODEV;
115 *bus = PCI_DN(np)->busno;
116 *devfn = PCI_DN(np)->devfn;
117 return 0;
118}
119
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
121{
122 if (bus->self)
123 return pci_device_to_OF_node(bus->self);
124 else
125 return bus->sysdata; /* Must be root bus (PHB) */
126}
127
Linas Vepstas2bf6a8f2005-11-03 18:52:16 -0600128/** Find the bus corresponding to the indicated device node */
129struct pci_bus * pcibios_find_pci_bus(struct device_node *dn);
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
Paul Mackerrasf7abbc12005-10-22 15:03:21 +1000132 struct device_node *dev, int primary);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Linas Vepstas2bf6a8f2005-11-03 18:52:16 -0600134/** Remove all of the PCI devices under this bus */
135void pcibios_remove_pci_devices(struct pci_bus *bus);
136
137/** Discover new pci devices under this bus, and add them */
138void pcibios_add_pci_devices(struct pci_bus * bus);
linas31087d72005-12-13 13:46:36 -0600139void pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus);
Linas Vepstas2bf6a8f2005-11-03 18:52:16 -0600140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141extern int pcibios_remove_root_bus(struct pci_controller *phb);
142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
144{
145 struct device_node *busdn = bus->sysdata;
146
147 BUG_ON(busdn == NULL);
Paul Mackerras16353172005-09-06 13:17:54 +1000148 return PCI_DN(busdn)->phb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149}
150
Benjamin Herrenschmidt463ce0e2005-11-23 17:56:06 +1100151extern struct pci_controller*
152pci_find_hose_for_OF_device(struct device_node* node);
153
Benjamin Herrenschmidtb5166cc2005-11-15 16:05:33 +1100154extern struct pci_controller *
155pcibios_alloc_controller(struct device_node *dev);
156extern void pcibios_free_controller(struct pci_controller *phb);
157
Benjamin Herrenschmidtd2dd4822005-11-30 16:57:28 +1100158#ifdef CONFIG_PCI
Benjamin Herrenschmidtf2c45832005-12-15 15:00:57 +1100159extern unsigned long pci_address_to_pio(phys_addr_t address);
Benjamin Herrenschmidtd2dd4822005-11-30 16:57:28 +1100160#else
Benjamin Herrenschmidtf2c45832005-12-15 15:00:57 +1100161static inline unsigned long pci_address_to_pio(phys_addr_t address)
Benjamin Herrenschmidtd2dd4822005-11-30 16:57:28 +1100162{
Benjamin Herrenschmidtf2c45832005-12-15 15:00:57 +1100163 return (unsigned long)-1;
Benjamin Herrenschmidtd2dd4822005-11-30 16:57:28 +1100164}
165#endif
166
Paul Mackerras42672922005-09-12 17:17:36 +1000167/* Return values for ppc_md.pci_probe_mode function */
168#define PCI_PROBE_NONE -1 /* Don't look at this bus at all */
169#define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */
170#define PCI_PROBE_DEVTREE 1 /* Instantiate from device tree */
171
Anton Blanchard357518f2006-06-10 20:53:06 +1000172#ifdef CONFIG_NUMA
173#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = (NODE))
174#else
175#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = -1)
176#endif
177
Paul Mackerras047ea782005-11-19 20:17:32 +1100178#endif /* CONFIG_PPC64 */
Arnd Bergmann88ced032005-12-16 22:43:46 +0100179#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180#endif