Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 1 | #ifndef _ASM_POWERPC_PCI_BRIDGE_H |
| 2 | #define _ASM_POWERPC_PCI_BRIDGE_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 3 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 5 | #include <linux/pci.h> |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 6 | #include <linux/list.h> |
| 7 | #include <linux/ioport.h> |
| 8 | |
| 9 | #ifndef CONFIG_PPC64 |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 10 | |
| 11 | struct device_node; |
| 12 | struct pci_controller; |
| 13 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 14 | /* |
| 15 | * Structure of a PCI controller (host bridge) |
| 16 | */ |
| 17 | struct pci_controller { |
| 18 | struct pci_bus *bus; |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 19 | char is_dynamic; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 20 | void *arch_data; |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 21 | struct list_head list_node; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 22 | struct device *parent; |
| 23 | |
| 24 | int first_busno; |
| 25 | int last_busno; |
| 26 | int self_busno; |
| 27 | |
| 28 | void __iomem *io_base_virt; |
| 29 | resource_size_t io_base_phys; |
| 30 | |
| 31 | /* Some machines (PReP) have a non 1:1 mapping of |
| 32 | * the PCI memory space in the CPU bus space |
| 33 | */ |
| 34 | resource_size_t pci_mem_offset; |
| 35 | |
| 36 | struct pci_ops *ops; |
| 37 | volatile unsigned int __iomem *cfg_addr; |
| 38 | volatile void __iomem *cfg_data; |
| 39 | |
| 40 | /* |
| 41 | * Used for variants of PCI indirect handling and possible quirks: |
| 42 | * SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1 |
| 43 | * EXT_REG - provides access to PCI-e extended registers |
| 44 | * SURPRESS_PRIMARY_BUS - we surpress the setting of PCI_PRIMARY_BUS |
| 45 | * on Freescale PCI-e controllers since they used the PCI_PRIMARY_BUS |
| 46 | * to determine which bus number to match on when generating type0 |
| 47 | * config cycles |
Kumar Gala | 62c66c8 | 2007-07-11 13:22:41 -0500 | [diff] [blame] | 48 | * NO_PCIE_LINK - the Freescale PCI-e controllers have issues with |
| 49 | * hanging if we don't have link and try to do config cycles to |
| 50 | * anything but the PHB. Only allow talking to the PHB if this is |
| 51 | * set. |
Kumar Gala | 2e56ff2 | 2007-07-19 16:07:35 -0500 | [diff] [blame] | 52 | * BIG_ENDIAN - cfg_addr is a big endian register |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 53 | */ |
| 54 | #define PPC_INDIRECT_TYPE_SET_CFG_TYPE (0x00000001) |
| 55 | #define PPC_INDIRECT_TYPE_EXT_REG (0x00000002) |
| 56 | #define PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS (0x00000004) |
Kumar Gala | 62c66c8 | 2007-07-11 13:22:41 -0500 | [diff] [blame] | 57 | #define PPC_INDIRECT_TYPE_NO_PCIE_LINK (0x00000008) |
Kumar Gala | 2e56ff2 | 2007-07-19 16:07:35 -0500 | [diff] [blame] | 58 | #define PPC_INDIRECT_TYPE_BIG_ENDIAN (0x00000010) |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 59 | u32 indirect_type; |
| 60 | |
| 61 | /* Currently, we limit ourselves to 1 IO range and 3 mem |
| 62 | * ranges since the common pci_bus structure can't handle more |
| 63 | */ |
| 64 | struct resource io_resource; |
| 65 | struct resource mem_resources[3]; |
Kumar Gala | 5516b54 | 2007-06-27 01:17:57 -0500 | [diff] [blame] | 66 | int global_number; /* PCI domain number */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 67 | }; |
| 68 | |
| 69 | static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus) |
| 70 | { |
| 71 | return bus->sysdata; |
| 72 | } |
| 73 | |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 74 | static inline int isa_vaddr_is_ioport(void __iomem *address) |
| 75 | { |
| 76 | /* No specific ISA handling on ppc32 at this stage, it |
| 77 | * all goes through PCI |
| 78 | */ |
| 79 | return 0; |
| 80 | } |
| 81 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 82 | /* These are used for config access before all the PCI probing |
| 83 | has been done. */ |
| 84 | int early_read_config_byte(struct pci_controller *hose, int bus, int dev_fn, |
| 85 | int where, u8 *val); |
| 86 | int early_read_config_word(struct pci_controller *hose, int bus, int dev_fn, |
| 87 | int where, u16 *val); |
| 88 | int early_read_config_dword(struct pci_controller *hose, int bus, int dev_fn, |
| 89 | int where, u32 *val); |
| 90 | int early_write_config_byte(struct pci_controller *hose, int bus, int dev_fn, |
| 91 | int where, u8 val); |
| 92 | int early_write_config_word(struct pci_controller *hose, int bus, int dev_fn, |
| 93 | int where, u16 val); |
| 94 | int early_write_config_dword(struct pci_controller *hose, int bus, int dev_fn, |
| 95 | int where, u32 val); |
| 96 | |
Kumar Gala | 38805e5 | 2007-07-10 23:37:45 -0500 | [diff] [blame] | 97 | extern int early_find_capability(struct pci_controller *hose, int bus, |
| 98 | int dev_fn, int cap); |
| 99 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 100 | extern void setup_indirect_pci(struct pci_controller* hose, |
Kumar Gala | 2e56ff2 | 2007-07-19 16:07:35 -0500 | [diff] [blame] | 101 | u32 cfg_addr, u32 cfg_data, u32 flags); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 102 | extern void setup_grackle(struct pci_controller *hose); |
Kumar Gala | f64fddb | 2007-07-20 13:35:34 -0500 | [diff] [blame] | 103 | extern void __init update_bridge_resource(struct pci_dev *dev, |
| 104 | struct resource *res); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 105 | |
Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 106 | #else |
| 107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | /* |
| 110 | * This program is free software; you can redistribute it and/or |
| 111 | * modify it under the terms of the GNU General Public License |
| 112 | * as published by the Free Software Foundation; either version |
| 113 | * 2 of the License, or (at your option) any later version. |
| 114 | */ |
| 115 | |
| 116 | /* |
| 117 | * Structure of a PCI controller (host bridge) |
| 118 | */ |
| 119 | struct pci_controller { |
| 120 | struct pci_bus *bus; |
| 121 | char is_dynamic; |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 122 | int node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | void *arch_data; |
| 124 | struct list_head list_node; |
Benjamin Herrenschmidt | 803d457 | 2006-11-11 17:25:07 +1100 | [diff] [blame] | 125 | struct device *parent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | int first_busno; |
| 128 | int last_busno; |
| 129 | |
| 130 | void __iomem *io_base_virt; |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 131 | void *io_base_alloc; |
Benjamin Herrenschmidt | 396a1a5 | 2006-12-08 17:14:33 +1100 | [diff] [blame] | 132 | resource_size_t io_base_phys; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | /* Some machines have a non 1:1 mapping of |
| 135 | * the PCI memory space in the CPU bus space |
| 136 | */ |
Benjamin Herrenschmidt | 396a1a5 | 2006-12-08 17:14:33 +1100 | [diff] [blame] | 137 | resource_size_t pci_mem_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | unsigned long pci_io_size; |
| 139 | |
| 140 | struct pci_ops *ops; |
| 141 | volatile unsigned int __iomem *cfg_addr; |
Paul Mackerras | 17a6392 | 2005-10-20 21:10:09 +1000 | [diff] [blame] | 142 | volatile void __iomem *cfg_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
| 144 | /* Currently, we limit ourselves to 1 IO range and 3 mem |
| 145 | * ranges since the common pci_bus structure can't handle more |
| 146 | */ |
| 147 | struct resource io_resource; |
| 148 | struct resource mem_resources[3]; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 149 | int global_number; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | unsigned long buid; |
| 151 | unsigned long dma_window_base_cur; |
| 152 | unsigned long dma_window_size; |
Ishizaki Kou | 5b7c726 | 2007-01-12 09:57:37 +0900 | [diff] [blame] | 153 | |
| 154 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | }; |
| 156 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 157 | /* |
| 158 | * PCI stuff, for nodes representing PCI devices, pointed to |
| 159 | * by device_node->data. |
| 160 | */ |
| 161 | struct pci_controller; |
| 162 | struct iommu_table; |
| 163 | |
| 164 | struct pci_dn { |
Linas Vepstas | 7684b40 | 2005-11-03 18:55:19 -0600 | [diff] [blame] | 165 | int busno; /* pci bus number */ |
| 166 | int bussubno; /* pci subordinate bus number */ |
| 167 | int devfn; /* pci device and function number */ |
| 168 | int class_code; /* pci device class */ |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 169 | |
Linas Vepstas | c2e221e | 2007-05-23 04:18:04 +1000 | [diff] [blame] | 170 | struct pci_controller *phb; /* for pci devices */ |
| 171 | struct iommu_table *iommu_table; /* for phb's or bridges */ |
| 172 | struct pci_dev *pcidev; /* back-pointer to the pci device */ |
| 173 | struct device_node *node; /* back-pointer to the device_node */ |
| 174 | |
| 175 | int pci_ext_config_space; /* for pci devices */ |
| 176 | |
| 177 | #ifdef CONFIG_EEH |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 178 | int eeh_mode; /* See eeh.h for possible EEH_MODEs */ |
| 179 | int eeh_config_addr; |
Linas Vepstas | 25e591f | 2005-11-03 18:53:20 -0600 | [diff] [blame] | 180 | int eeh_pe_config_addr; /* new-style partition endpoint address */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 181 | int eeh_check_count; /* # times driver ignored error */ |
| 182 | int eeh_freeze_count; /* # times this device froze up. */ |
Linas Vepstas | 858955b | 2007-05-24 03:20:51 +1000 | [diff] [blame] | 183 | int eeh_false_positives; /* # times this device reported #ff's */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 184 | u32 config_space[16]; /* saved PCI config space */ |
Linas Vepstas | c2e221e | 2007-05-23 04:18:04 +1000 | [diff] [blame] | 185 | #endif |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 186 | }; |
| 187 | |
| 188 | /* Get the pointer to a device_node's pci_dn */ |
| 189 | #define PCI_DN(dn) ((struct pci_dn *) (dn)->data) |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | struct device_node *fetch_dev_dn(struct pci_dev *dev); |
| 192 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 193 | /* Get a device_node from a pci_dev. This code must be fast except |
| 194 | * in the case where the sysdata is incorrect and needs to be fixed |
| 195 | * up (this will only happen once). |
| 196 | * In this case the sysdata will have been inherited from a PCI host |
| 197 | * bridge or a PCI-PCI bridge further up the tree, so it will point |
| 198 | * to a valid struct pci_dn, just not the one we want. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | */ |
| 200 | static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev) |
| 201 | { |
| 202 | struct device_node *dn = dev->sysdata; |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 203 | struct pci_dn *pdn = dn->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 205 | if (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | return dn; /* fast path. sysdata is good */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 207 | return fetch_dev_dn(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | } |
| 209 | |
Paul Mackerras | 40ef8cb | 2005-10-10 22:50:37 +1000 | [diff] [blame] | 210 | static inline int pci_device_from_OF_node(struct device_node *np, |
| 211 | u8 *bus, u8 *devfn) |
| 212 | { |
| 213 | if (!PCI_DN(np)) |
| 214 | return -ENODEV; |
| 215 | *bus = PCI_DN(np)->busno; |
| 216 | *devfn = PCI_DN(np)->devfn; |
| 217 | return 0; |
| 218 | } |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
| 221 | { |
| 222 | if (bus->self) |
| 223 | return pci_device_to_OF_node(bus->self); |
| 224 | else |
| 225 | return bus->sysdata; /* Must be root bus (PHB) */ |
| 226 | } |
| 227 | |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 228 | /** Find the bus corresponding to the indicated device node */ |
| 229 | struct pci_bus * pcibios_find_pci_bus(struct device_node *dn); |
| 230 | |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 231 | /** Remove all of the PCI devices under this bus */ |
| 232 | void pcibios_remove_pci_devices(struct pci_bus *bus); |
| 233 | |
| 234 | /** Discover new pci devices under this bus, and add them */ |
| 235 | void pcibios_add_pci_devices(struct pci_bus * bus); |
linas | 31087d7 | 2005-12-13 13:46:36 -0600 | [diff] [blame] | 236 | void pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus); |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | extern int pcibios_remove_root_bus(struct pci_controller *phb); |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus) |
| 241 | { |
| 242 | struct device_node *busdn = bus->sysdata; |
| 243 | |
| 244 | BUG_ON(busdn == NULL); |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 245 | return PCI_DN(busdn)->phb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | } |
| 247 | |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 248 | extern void pcibios_free_controller(struct pci_controller *phb); |
| 249 | |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 250 | extern void isa_bridge_find_early(struct pci_controller *hose); |
| 251 | |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 252 | static inline int isa_vaddr_is_ioport(void __iomem *address) |
| 253 | { |
| 254 | /* Check if address hits the reserved legacy IO range */ |
| 255 | unsigned long ea = (unsigned long)address; |
| 256 | return ea >= ISA_IO_BASE && ea < ISA_IO_END; |
| 257 | } |
| 258 | |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 259 | extern int pcibios_unmap_io_space(struct pci_bus *bus); |
| 260 | extern int pcibios_map_io_space(struct pci_bus *bus); |
| 261 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 262 | /* Return values for ppc_md.pci_probe_mode function */ |
| 263 | #define PCI_PROBE_NONE -1 /* Don't look at this bus at all */ |
| 264 | #define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */ |
| 265 | #define PCI_PROBE_DEVTREE 1 /* Instantiate from device tree */ |
| 266 | |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 267 | #ifdef CONFIG_NUMA |
| 268 | #define PHB_SET_NODE(PHB, NODE) ((PHB)->node = (NODE)) |
| 269 | #else |
| 270 | #define PHB_SET_NODE(PHB, NODE) ((PHB)->node = -1) |
| 271 | #endif |
| 272 | |
Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 273 | #endif /* CONFIG_PPC64 */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 274 | |
| 275 | /* Get the PCI host controller for an OF device */ |
| 276 | extern struct pci_controller* |
| 277 | pci_find_hose_for_OF_device(struct device_node* node); |
| 278 | |
| 279 | /* Fill up host controller resources from the OF node */ |
| 280 | extern void |
| 281 | pci_process_bridge_OF_ranges(struct pci_controller *hose, |
| 282 | struct device_node *dev, int primary); |
| 283 | |
Kumar Gala | dbf8471 | 2007-06-27 01:56:50 -0500 | [diff] [blame] | 284 | /* Allocate a new PCI host bridge structure */ |
| 285 | extern struct pci_controller * |
| 286 | pcibios_alloc_controller(struct device_node *dev); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 287 | #ifdef CONFIG_PCI |
| 288 | extern unsigned long pci_address_to_pio(phys_addr_t address); |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 289 | extern int pcibios_vaddr_is_ioport(void __iomem *address); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 290 | #else |
| 291 | static inline unsigned long pci_address_to_pio(phys_addr_t address) |
| 292 | { |
| 293 | return (unsigned long)-1; |
| 294 | } |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 295 | static inline int pcibios_vaddr_is_ioport(void __iomem *address) |
| 296 | { |
| 297 | return 0; |
| 298 | } |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 299 | #endif |
| 300 | |
| 301 | |
| 302 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 303 | #endif /* __KERNEL__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | #endif |