powerpc: rename ppc_pci_*_flags to pci_*_flags
[linux-2.6-block.git] / arch / powerpc / include / asm / pci-bridge.h
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1#ifndef _ASM_POWERPC_PCI_BRIDGE_H
2#define _ASM_POWERPC_PCI_BRIDGE_H
88ced031 3#ifdef __KERNEL__
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4/*
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 */
5531e41b 10#include <linux/pci.h>
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11#include <linux/list.h>
12#include <linux/ioport.h>
13
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14struct device_node;
15
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16enum {
17 /* Force re-assigning all resources (ignore firmware
18 * setup completely)
19 */
0e47ff1c 20 PCI_REASSIGN_ALL_RSRC = 0x00000001,
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21
22 /* Re-assign all bus numbers */
0e47ff1c 23 PCI_REASSIGN_ALL_BUS = 0x00000002,
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24
25 /* Do not try to assign, just use existing setup */
0e47ff1c 26 PCI_PROBE_ONLY = 0x00000004,
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27
28 /* Don't bother with ISA alignment unless the bridge has
29 * ISA forwarding enabled
30 */
0e47ff1c 31 PCI_CAN_SKIP_ISA_ALIGN = 0x00000008,
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32
33 /* Enable domain numbers in /proc */
0e47ff1c 34 PCI_ENABLE_PROC_DOMAINS = 0x00000010,
fa462f2d 35 /* ... except for domain 0 */
0e47ff1c 36 PCI_COMPAT_DOMAIN_0 = 0x00000020,
fc3fb71c 37};
7fe519c2 38#ifdef CONFIG_PCI
0e47ff1c 39extern unsigned int pci_flags;
7fe519c2 40
0e47ff1c 41static inline void pci_set_flags(int flags)
7fe519c2 42{
0e47ff1c 43 pci_flags = flags;
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44}
45
0e47ff1c 46static inline void pci_add_flags(int flags)
7fe519c2 47{
0e47ff1c 48 pci_flags |= flags;
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49}
50
0e47ff1c 51static inline int pci_has_flag(int flag)
7fe519c2 52{
0e47ff1c 53 return (pci_flags & flag);
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54}
55#else
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56static inline void pci_set_flags(int flags) { }
57static inline void pci_add_flags(int flags) { }
58static inline int pci_has_flag(int flag)
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59{
60 return 0;
61}
62#endif
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63
64
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65/*
66 * Structure of a PCI controller (host bridge)
67 */
68struct pci_controller {
69 struct pci_bus *bus;
a4c9e328 70 char is_dynamic;
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71#ifdef CONFIG_PPC64
72 int node;
73#endif
44ef3390 74 struct device_node *dn;
a4c9e328 75 struct list_head list_node;
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76 struct device *parent;
77
78 int first_busno;
79 int last_busno;
80 int self_busno;
81
82 void __iomem *io_base_virt;
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83#ifdef CONFIG_PPC64
84 void *io_base_alloc;
85#endif
5531e41b 86 resource_size_t io_base_phys;
13dccb9e 87 resource_size_t pci_io_size;
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88
89 /* Some machines (PReP) have a non 1:1 mapping of
90 * the PCI memory space in the CPU bus space
91 */
92 resource_size_t pci_mem_offset;
93
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94 /* Some machines have a special region to forward the ISA
95 * "memory" cycles such as VGA memory regions. Left to 0
96 * if unsupported
97 */
98 resource_size_t isa_mem_phys;
99 resource_size_t isa_mem_size;
100
5531e41b 101 struct pci_ops *ops;
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102 unsigned int __iomem *cfg_addr;
103 void __iomem *cfg_data;
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104
105 /*
106 * Used for variants of PCI indirect handling and possible quirks:
107 * SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1
108 * EXT_REG - provides access to PCI-e extended registers
25985edc 109 * SURPRESS_PRIMARY_BUS - we suppress the setting of PCI_PRIMARY_BUS
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110 * on Freescale PCI-e controllers since they used the PCI_PRIMARY_BUS
111 * to determine which bus number to match on when generating type0
112 * config cycles
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113 * NO_PCIE_LINK - the Freescale PCI-e controllers have issues with
114 * hanging if we don't have link and try to do config cycles to
115 * anything but the PHB. Only allow talking to the PHB if this is
116 * set.
2e56ff20 117 * BIG_ENDIAN - cfg_addr is a big endian register
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118 * BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs on
119 * the PLB4. Effectively disable MRM commands by setting this.
5531e41b 120 */
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121#define PPC_INDIRECT_TYPE_SET_CFG_TYPE 0x00000001
122#define PPC_INDIRECT_TYPE_EXT_REG 0x00000002
123#define PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS 0x00000004
124#define PPC_INDIRECT_TYPE_NO_PCIE_LINK 0x00000008
125#define PPC_INDIRECT_TYPE_BIG_ENDIAN 0x00000010
5ce4b596 126#define PPC_INDIRECT_TYPE_BROKEN_MRM 0x00000020
5531e41b 127 u32 indirect_type;
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128 /* Currently, we limit ourselves to 1 IO range and 3 mem
129 * ranges since the common pci_bus structure can't handle more
130 */
131 struct resource io_resource;
132 struct resource mem_resources[3];
5516b540 133 int global_number; /* PCI domain number */
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134
135 resource_size_t dma_window_base_cur;
136 resource_size_t dma_window_size;
137
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138#ifdef CONFIG_PPC64
139 unsigned long buid;
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140
141 void *private_data;
142#endif /* CONFIG_PPC64 */
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143};
144
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145/* These are used for config access before all the PCI probing
146 has been done. */
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147extern int early_read_config_byte(struct pci_controller *hose, int bus,
148 int dev_fn, int where, u8 *val);
149extern int early_read_config_word(struct pci_controller *hose, int bus,
150 int dev_fn, int where, u16 *val);
151extern int early_read_config_dword(struct pci_controller *hose, int bus,
152 int dev_fn, int where, u32 *val);
153extern int early_write_config_byte(struct pci_controller *hose, int bus,
154 int dev_fn, int where, u8 val);
155extern int early_write_config_word(struct pci_controller *hose, int bus,
156 int dev_fn, int where, u16 val);
157extern int early_write_config_dword(struct pci_controller *hose, int bus,
158 int dev_fn, int where, u32 val);
5531e41b 159
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160extern int early_find_capability(struct pci_controller *hose, int bus,
161 int dev_fn, int cap);
162
5531e41b 163extern void setup_indirect_pci(struct pci_controller* hose,
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164 resource_size_t cfg_addr,
165 resource_size_t cfg_data, u32 flags);
89c2dd62 166
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167static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
168{
169 return bus->sysdata;
170}
171
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172#ifndef CONFIG_PPC64
173
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174static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
175{
176 struct pci_controller *host;
177
178 if (bus->self)
179 return pci_device_to_OF_node(bus->self);
180 host = pci_bus_to_host(bus);
181 return host ? host->dn : NULL;
182}
183
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184static inline int isa_vaddr_is_ioport(void __iomem *address)
185{
186 /* No specific ISA handling on ppc32 at this stage, it
187 * all goes through PCI
188 */
189 return 0;
190}
191
7cd1de6b 192#else /* CONFIG_PPC64 */
1da177e4 193
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194/*
195 * PCI stuff, for nodes representing PCI devices, pointed to
196 * by device_node->data.
197 */
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198struct iommu_table;
199
200struct pci_dn {
7684b40c 201 int busno; /* pci bus number */
7684b40c 202 int devfn; /* pci device and function number */
b5166cc2 203
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204 struct pci_controller *phb; /* for pci devices */
205 struct iommu_table *iommu_table; /* for phb's or bridges */
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206 struct device_node *node; /* back-pointer to the device_node */
207
208 int pci_ext_config_space; /* for pci devices */
209
210#ifdef CONFIG_EEH
b6ed42a7 211 struct pci_dev *pcidev; /* back-pointer to the pci device */
86bcab49 212 int class_code; /* pci device class */
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213 int eeh_mode; /* See eeh.h for possible EEH_MODEs */
214 int eeh_config_addr;
25e591f6 215 int eeh_pe_config_addr; /* new-style partition endpoint address */
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216 int eeh_check_count; /* # times driver ignored error */
217 int eeh_freeze_count; /* # times this device froze up. */
218 int eeh_false_positives; /* # times this device reported #ff's */
1635317f 219 u32 config_space[16]; /* saved PCI config space */
c2e221e8 220#endif
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221};
222
223/* Get the pointer to a device_node's pci_dn */
224#define PCI_DN(dn) ((struct pci_dn *) (dn)->data)
225
7cd1de6b 226extern struct device_node *fetch_dev_dn(struct pci_dev *dev);
2eb4afb6 227extern void * update_dn_pci_info(struct device_node *dn, void *data);
1da177e4 228
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229/* Get a device_node from a pci_dev. This code must be fast except
230 * in the case where the sysdata is incorrect and needs to be fixed
b5d937de 231 * up (this will only happen once). */
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232static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
233{
b5d937de 234 return dev->dev.of_node ? dev->dev.of_node : fetch_dev_dn(dev);
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235}
236
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237static inline int pci_device_from_OF_node(struct device_node *np,
238 u8 *bus, u8 *devfn)
239{
240 if (!PCI_DN(np))
241 return -ENODEV;
242 *bus = PCI_DN(np)->busno;
243 *devfn = PCI_DN(np)->devfn;
244 return 0;
245}
246
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247static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
248{
249 if (bus->self)
250 return pci_device_to_OF_node(bus->self);
251 else
b5d937de 252 return bus->dev.of_node; /* Must be root bus (PHB) */
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253}
254
2bf6a8fa 255/** Find the bus corresponding to the indicated device node */
7cd1de6b 256extern struct pci_bus *pcibios_find_pci_bus(struct device_node *dn);
2bf6a8fa 257
2bf6a8fa 258/** Remove all of the PCI devices under this bus */
7cd1de6b 259extern void pcibios_remove_pci_devices(struct pci_bus *bus);
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260
261/** Discover new pci devices under this bus, and add them */
7cd1de6b 262extern void pcibios_add_pci_devices(struct pci_bus *bus);
1da177e4 263
b5166cc2 264
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265extern void isa_bridge_find_early(struct pci_controller *hose);
266
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267static inline int isa_vaddr_is_ioport(void __iomem *address)
268{
269 /* Check if address hits the reserved legacy IO range */
270 unsigned long ea = (unsigned long)address;
271 return ea >= ISA_IO_BASE && ea < ISA_IO_END;
272}
273
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274extern int pcibios_unmap_io_space(struct pci_bus *bus);
275extern int pcibios_map_io_space(struct pci_bus *bus);
276
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277#ifdef CONFIG_NUMA
278#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = (NODE))
279#else
280#define PHB_SET_NODE(PHB, NODE) ((PHB)->node = -1)
281#endif
282
7cd1de6b 283#endif /* CONFIG_PPC64 */
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284
285/* Get the PCI host controller for an OF device */
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286extern struct pci_controller *pci_find_hose_for_OF_device(
287 struct device_node* node);
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288
289/* Fill up host controller resources from the OF node */
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290extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
291 struct device_node *dev, int primary);
5531e41b 292
5131d4d8 293/* Allocate & free a PCI host bridge structure */
7cd1de6b 294extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
5131d4d8 295extern void pcibios_free_controller(struct pci_controller *phb);
53280323 296extern void pcibios_setup_phb_resources(struct pci_controller *hose);
5131d4d8 297
5531e41b 298#ifdef CONFIG_PCI
6dfbde20 299extern int pcibios_vaddr_is_ioport(void __iomem *address);
5531e41b 300#else
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301static inline int pcibios_vaddr_is_ioport(void __iomem *address)
302{
303 return 0;
304}
7cd1de6b 305#endif /* CONFIG_PCI */
5531e41b 306
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307#endif /* __KERNEL__ */
308#endif /* _ASM_POWERPC_PCI_BRIDGE_H */