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 | |
Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 5 | #ifndef CONFIG_PPC64 |
| 6 | #include <asm-ppc/pci-bridge.h> |
| 7 | #else |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <linux/pci.h> |
Paul Mackerras | 76f9f87 | 2005-10-10 22:52:26 +1000 | [diff] [blame] | 10 | #include <linux/list.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| 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 | */ |
| 22 | struct pci_controller { |
| 23 | struct pci_bus *bus; |
| 24 | char is_dynamic; |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 25 | int node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | void *arch_data; |
| 27 | struct list_head list_node; |
Benjamin Herrenschmidt | 803d457 | 2006-11-11 17:25:07 +1100 | [diff] [blame] | 28 | struct device *parent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | int first_busno; |
| 31 | int last_busno; |
| 32 | |
| 33 | void __iomem *io_base_virt; |
Benjamin Herrenschmidt | 396a1a5 | 2006-12-08 17:14:33 +1100 | [diff] [blame] | 34 | resource_size_t io_base_phys; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | /* Some machines have a non 1:1 mapping of |
| 37 | * the PCI memory space in the CPU bus space |
| 38 | */ |
Benjamin Herrenschmidt | 396a1a5 | 2006-12-08 17:14:33 +1100 | [diff] [blame] | 39 | resource_size_t pci_mem_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | unsigned long pci_io_size; |
| 41 | |
| 42 | struct pci_ops *ops; |
| 43 | volatile unsigned int __iomem *cfg_addr; |
Paul Mackerras | 17a6392 | 2005-10-20 21:10:09 +1000 | [diff] [blame] | 44 | volatile void __iomem *cfg_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 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 Kou | 5b7c726 | 2007-01-12 09:57:37 +0900 | [diff] [blame] | 56 | |
| 57 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | }; |
| 59 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 60 | /* |
| 61 | * PCI stuff, for nodes representing PCI devices, pointed to |
| 62 | * by device_node->data. |
| 63 | */ |
| 64 | struct pci_controller; |
| 65 | struct iommu_table; |
| 66 | |
| 67 | struct pci_dn { |
Linas Vepstas | 7684b40 | 2005-11-03 18:55:19 -0600 | [diff] [blame] | 68 | 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 Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 72 | |
| 73 | #ifdef CONFIG_PPC_PSERIES |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 74 | int eeh_mode; /* See eeh.h for possible EEH_MODEs */ |
| 75 | int eeh_config_addr; |
Linas Vepstas | 25e591f | 2005-11-03 18:53:20 -0600 | [diff] [blame] | 76 | int eeh_pe_config_addr; /* new-style partition endpoint address */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 77 | int eeh_check_count; /* # times driver ignored error */ |
| 78 | int eeh_freeze_count; /* # times this device froze up. */ |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 79 | #endif |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 80 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | struct device_node *fetch_dev_dn(struct pci_dev *dev); |
| 92 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 93 | /* 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | */ |
| 100 | static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev) |
| 101 | { |
| 102 | struct device_node *dn = dev->sysdata; |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 103 | struct pci_dn *pdn = dn->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 105 | if (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | return dn; /* fast path. sysdata is good */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 107 | return fetch_dev_dn(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Paul Mackerras | 40ef8cb | 2005-10-10 22:50:37 +1000 | [diff] [blame] | 110 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | static 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 Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 128 | /** Find the bus corresponding to the indicated device node */ |
| 129 | struct pci_bus * pcibios_find_pci_bus(struct device_node *dn); |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | extern void pci_process_bridge_OF_ranges(struct pci_controller *hose, |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 132 | struct device_node *dev, int primary); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 134 | /** Remove all of the PCI devices under this bus */ |
| 135 | void pcibios_remove_pci_devices(struct pci_bus *bus); |
| 136 | |
| 137 | /** Discover new pci devices under this bus, and add them */ |
| 138 | void pcibios_add_pci_devices(struct pci_bus * bus); |
linas | 31087d7 | 2005-12-13 13:46:36 -0600 | [diff] [blame] | 139 | 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] | 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | extern int pcibios_remove_root_bus(struct pci_controller *phb); |
| 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | static 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 Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 148 | return PCI_DN(busdn)->phb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | } |
| 150 | |
Benjamin Herrenschmidt | 463ce0e | 2005-11-23 17:56:06 +1100 | [diff] [blame] | 151 | extern struct pci_controller* |
| 152 | pci_find_hose_for_OF_device(struct device_node* node); |
| 153 | |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 154 | extern struct pci_controller * |
| 155 | pcibios_alloc_controller(struct device_node *dev); |
| 156 | extern void pcibios_free_controller(struct pci_controller *phb); |
| 157 | |
Benjamin Herrenschmidt | d2dd482 | 2005-11-30 16:57:28 +1100 | [diff] [blame] | 158 | #ifdef CONFIG_PCI |
Benjamin Herrenschmidt | f2c4583 | 2005-12-15 15:00:57 +1100 | [diff] [blame] | 159 | extern unsigned long pci_address_to_pio(phys_addr_t address); |
Benjamin Herrenschmidt | d2dd482 | 2005-11-30 16:57:28 +1100 | [diff] [blame] | 160 | #else |
Benjamin Herrenschmidt | f2c4583 | 2005-12-15 15:00:57 +1100 | [diff] [blame] | 161 | static inline unsigned long pci_address_to_pio(phys_addr_t address) |
Benjamin Herrenschmidt | d2dd482 | 2005-11-30 16:57:28 +1100 | [diff] [blame] | 162 | { |
Benjamin Herrenschmidt | f2c4583 | 2005-12-15 15:00:57 +1100 | [diff] [blame] | 163 | return (unsigned long)-1; |
Benjamin Herrenschmidt | d2dd482 | 2005-11-30 16:57:28 +1100 | [diff] [blame] | 164 | } |
| 165 | #endif |
| 166 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 167 | /* 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 Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 172 | #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 Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 178 | #endif /* CONFIG_PPC64 */ |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 179 | #endif /* __KERNEL__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | #endif |