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__ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 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 | */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 10 | #include <linux/pci.h> |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 11 | #include <linux/list.h> |
| 12 | #include <linux/ioport.h> |
Rob Herring | f4ffd5e | 2011-06-29 11:46:54 -0500 | [diff] [blame] | 13 | #include <asm-generic/pci-bridge.h> |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 14 | |
Stephen Rothwell | 44ef339 | 2007-12-10 14:33:21 +1100 | [diff] [blame] | 15 | struct device_node; |
| 16 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 17 | /* |
| 18 | * Structure of a PCI controller (host bridge) |
| 19 | */ |
| 20 | struct pci_controller { |
| 21 | struct pci_bus *bus; |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 22 | char is_dynamic; |
Stephen Rothwell | 7211991 | 2007-12-11 11:00:13 +1100 | [diff] [blame] | 23 | #ifdef CONFIG_PPC64 |
| 24 | int node; |
| 25 | #endif |
Stephen Rothwell | 44ef339 | 2007-12-10 14:33:21 +1100 | [diff] [blame] | 26 | struct device_node *dn; |
Kumar Gala | a4c9e32 | 2007-06-27 13:09:43 -0500 | [diff] [blame] | 27 | struct list_head list_node; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 28 | struct device *parent; |
| 29 | |
| 30 | int first_busno; |
| 31 | int last_busno; |
| 32 | int self_busno; |
| 33 | |
| 34 | void __iomem *io_base_virt; |
Stephen Rothwell | 7211991 | 2007-12-11 11:00:13 +1100 | [diff] [blame] | 35 | #ifdef CONFIG_PPC64 |
| 36 | void *io_base_alloc; |
| 37 | #endif |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 38 | resource_size_t io_base_phys; |
Benjamin Herrenschmidt | 13dccb9 | 2007-12-11 14:48:18 +1100 | [diff] [blame] | 39 | resource_size_t pci_io_size; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 40 | |
| 41 | /* Some machines (PReP) have a non 1:1 mapping of |
| 42 | * the PCI memory space in the CPU bus space |
| 43 | */ |
| 44 | resource_size_t pci_mem_offset; |
| 45 | |
Benjamin Herrenschmidt | e9f82cb | 2008-10-14 11:55:31 +1100 | [diff] [blame] | 46 | /* Some machines have a special region to forward the ISA |
| 47 | * "memory" cycles such as VGA memory regions. Left to 0 |
| 48 | * if unsupported |
| 49 | */ |
| 50 | resource_size_t isa_mem_phys; |
| 51 | resource_size_t isa_mem_size; |
| 52 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 53 | struct pci_ops *ops; |
Stephen Rothwell | 70fbb93 | 2007-12-21 15:23:48 +1100 | [diff] [blame] | 54 | unsigned int __iomem *cfg_addr; |
| 55 | void __iomem *cfg_data; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 56 | |
| 57 | /* |
| 58 | * Used for variants of PCI indirect handling and possible quirks: |
| 59 | * SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1 |
| 60 | * EXT_REG - provides access to PCI-e extended registers |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 61 | * SURPRESS_PRIMARY_BUS - we suppress the setting of PCI_PRIMARY_BUS |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 62 | * on Freescale PCI-e controllers since they used the PCI_PRIMARY_BUS |
| 63 | * to determine which bus number to match on when generating type0 |
| 64 | * config cycles |
Kumar Gala | 62c66c8 | 2007-07-11 13:22:41 -0500 | [diff] [blame] | 65 | * NO_PCIE_LINK - the Freescale PCI-e controllers have issues with |
| 66 | * hanging if we don't have link and try to do config cycles to |
| 67 | * anything but the PHB. Only allow talking to the PHB if this is |
| 68 | * set. |
Kumar Gala | 2e56ff2 | 2007-07-19 16:07:35 -0500 | [diff] [blame] | 69 | * BIG_ENDIAN - cfg_addr is a big endian register |
Josh Boyer | 5ce4b59 | 2008-06-17 19:01:38 -0400 | [diff] [blame] | 70 | * BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs on |
| 71 | * the PLB4. Effectively disable MRM commands by setting this. |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 72 | */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 73 | #define PPC_INDIRECT_TYPE_SET_CFG_TYPE 0x00000001 |
| 74 | #define PPC_INDIRECT_TYPE_EXT_REG 0x00000002 |
| 75 | #define PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS 0x00000004 |
| 76 | #define PPC_INDIRECT_TYPE_NO_PCIE_LINK 0x00000008 |
| 77 | #define PPC_INDIRECT_TYPE_BIG_ENDIAN 0x00000010 |
Josh Boyer | 5ce4b59 | 2008-06-17 19:01:38 -0400 | [diff] [blame] | 78 | #define PPC_INDIRECT_TYPE_BROKEN_MRM 0x00000020 |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 79 | u32 indirect_type; |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 80 | /* Currently, we limit ourselves to 1 IO range and 3 mem |
| 81 | * ranges since the common pci_bus structure can't handle more |
| 82 | */ |
| 83 | struct resource io_resource; |
| 84 | struct resource mem_resources[3]; |
Kumar Gala | 5516b54 | 2007-06-27 01:17:57 -0500 | [diff] [blame] | 85 | int global_number; /* PCI domain number */ |
Becky Bruce | 89d9334 | 2009-04-20 11:26:48 -0500 | [diff] [blame] | 86 | |
| 87 | resource_size_t dma_window_base_cur; |
| 88 | resource_size_t dma_window_size; |
| 89 | |
Stephen Rothwell | 7211991 | 2007-12-11 11:00:13 +1100 | [diff] [blame] | 90 | #ifdef CONFIG_PPC64 |
| 91 | unsigned long buid; |
Stephen Rothwell | 7211991 | 2007-12-11 11:00:13 +1100 | [diff] [blame] | 92 | |
| 93 | void *private_data; |
| 94 | #endif /* CONFIG_PPC64 */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 95 | }; |
| 96 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 97 | /* These are used for config access before all the PCI probing |
| 98 | has been done. */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 99 | extern int early_read_config_byte(struct pci_controller *hose, int bus, |
| 100 | int dev_fn, int where, u8 *val); |
| 101 | extern int early_read_config_word(struct pci_controller *hose, int bus, |
| 102 | int dev_fn, int where, u16 *val); |
| 103 | extern int early_read_config_dword(struct pci_controller *hose, int bus, |
| 104 | int dev_fn, int where, u32 *val); |
| 105 | extern int early_write_config_byte(struct pci_controller *hose, int bus, |
| 106 | int dev_fn, int where, u8 val); |
| 107 | extern int early_write_config_word(struct pci_controller *hose, int bus, |
| 108 | int dev_fn, int where, u16 val); |
| 109 | extern int early_write_config_dword(struct pci_controller *hose, int bus, |
| 110 | int dev_fn, int where, u32 val); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 111 | |
Kumar Gala | 38805e5 | 2007-07-10 23:37:45 -0500 | [diff] [blame] | 112 | extern int early_find_capability(struct pci_controller *hose, int bus, |
| 113 | int dev_fn, int cap); |
| 114 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 115 | extern void setup_indirect_pci(struct pci_controller* hose, |
Valentine Barshak | d94bad8 | 2007-10-08 22:51:24 +1000 | [diff] [blame] | 116 | resource_size_t cfg_addr, |
| 117 | resource_size_t cfg_data, u32 flags); |
Kumar Gala | 89c2dd6 | 2009-08-25 16:20:45 +0000 | [diff] [blame] | 118 | |
Kumar Gala | 89c2dd6 | 2009-08-25 16:20:45 +0000 | [diff] [blame] | 119 | static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus) |
| 120 | { |
| 121 | return bus->sysdata; |
| 122 | } |
| 123 | |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 124 | #ifndef CONFIG_PPC64 |
| 125 | |
| 126 | extern int pci_device_from_OF_node(struct device_node *node, |
| 127 | u8 *bus, u8 *devfn); |
| 128 | extern void pci_create_OF_bus_map(void); |
| 129 | |
Kumar Gala | 89c2dd6 | 2009-08-25 16:20:45 +0000 | [diff] [blame] | 130 | static inline int isa_vaddr_is_ioport(void __iomem *address) |
| 131 | { |
| 132 | /* No specific ISA handling on ppc32 at this stage, it |
| 133 | * all goes through PCI |
| 134 | */ |
| 135 | return 0; |
| 136 | } |
| 137 | |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 138 | #else /* CONFIG_PPC64 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
| 140 | /* |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 141 | * PCI stuff, for nodes representing PCI devices, pointed to |
| 142 | * by device_node->data. |
| 143 | */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 144 | struct iommu_table; |
| 145 | |
| 146 | struct pci_dn { |
Linas Vepstas | 7684b40 | 2005-11-03 18:55:19 -0600 | [diff] [blame] | 147 | int busno; /* pci bus number */ |
Linas Vepstas | 7684b40 | 2005-11-03 18:55:19 -0600 | [diff] [blame] | 148 | int devfn; /* pci device and function number */ |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 149 | |
Linas Vepstas | c2e221e | 2007-05-23 04:18:04 +1000 | [diff] [blame] | 150 | struct pci_controller *phb; /* for pci devices */ |
| 151 | struct iommu_table *iommu_table; /* for phb's or bridges */ |
Linas Vepstas | c2e221e | 2007-05-23 04:18:04 +1000 | [diff] [blame] | 152 | struct device_node *node; /* back-pointer to the device_node */ |
| 153 | |
| 154 | int pci_ext_config_space; /* for pci devices */ |
| 155 | |
Stephen Rothwell | b6ed42a | 2007-12-21 15:49:11 +1100 | [diff] [blame] | 156 | struct pci_dev *pcidev; /* back-pointer to the pci device */ |
Benjamin Herrenschmidt | 184cd4a | 2011-11-15 17:29:08 +0000 | [diff] [blame^] | 157 | #ifdef CONFIG_EEH |
Stephen Rothwell | 86bcab4 | 2007-12-21 15:48:18 +1100 | [diff] [blame] | 158 | int class_code; /* pci device class */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 159 | int eeh_mode; /* See eeh.h for possible EEH_MODEs */ |
| 160 | int eeh_config_addr; |
Linas Vepstas | 25e591f | 2005-11-03 18:53:20 -0600 | [diff] [blame] | 161 | int eeh_pe_config_addr; /* new-style partition endpoint address */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 162 | int eeh_check_count; /* # times driver ignored error */ |
| 163 | int eeh_freeze_count; /* # times this device froze up. */ |
| 164 | int eeh_false_positives; /* # times this device reported #ff's */ |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 165 | u32 config_space[16]; /* saved PCI config space */ |
Linas Vepstas | c2e221e | 2007-05-23 04:18:04 +1000 | [diff] [blame] | 166 | #endif |
Benjamin Herrenschmidt | 184cd4a | 2011-11-15 17:29:08 +0000 | [diff] [blame^] | 167 | #define IODA_INVALID_PE (-1) |
| 168 | #ifdef CONFIG_PPC_POWERNV |
| 169 | int pe_number; |
| 170 | #endif |
Paul Mackerras | 1635317 | 2005-09-06 13:17:54 +1000 | [diff] [blame] | 171 | }; |
| 172 | |
| 173 | /* Get the pointer to a device_node's pci_dn */ |
| 174 | #define PCI_DN(dn) ((struct pci_dn *) (dn)->data) |
| 175 | |
Kumar Gala | 2eb4afb | 2009-04-30 09:26:21 +0000 | [diff] [blame] | 176 | extern void * update_dn_pci_info(struct device_node *dn, void *data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Paul Mackerras | 40ef8cb | 2005-10-10 22:50:37 +1000 | [diff] [blame] | 178 | static inline int pci_device_from_OF_node(struct device_node *np, |
| 179 | u8 *bus, u8 *devfn) |
| 180 | { |
| 181 | if (!PCI_DN(np)) |
| 182 | return -ENODEV; |
| 183 | *bus = PCI_DN(np)->busno; |
| 184 | *devfn = PCI_DN(np)->devfn; |
| 185 | return 0; |
| 186 | } |
| 187 | |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 188 | /** Find the bus corresponding to the indicated device node */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 189 | extern struct pci_bus *pcibios_find_pci_bus(struct device_node *dn); |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 190 | |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 191 | /** Remove all of the PCI devices under this bus */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 192 | extern void pcibios_remove_pci_devices(struct pci_bus *bus); |
Linas Vepstas | 2bf6a8f | 2005-11-03 18:52:16 -0600 | [diff] [blame] | 193 | |
| 194 | /** Discover new pci devices under this bus, and add them */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 195 | extern void pcibios_add_pci_devices(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 197 | |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 198 | extern void isa_bridge_find_early(struct pci_controller *hose); |
| 199 | |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 200 | static inline int isa_vaddr_is_ioport(void __iomem *address) |
| 201 | { |
| 202 | /* Check if address hits the reserved legacy IO range */ |
| 203 | unsigned long ea = (unsigned long)address; |
| 204 | return ea >= ISA_IO_BASE && ea < ISA_IO_END; |
| 205 | } |
| 206 | |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 207 | extern int pcibios_unmap_io_space(struct pci_bus *bus); |
| 208 | extern int pcibios_map_io_space(struct pci_bus *bus); |
| 209 | |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 210 | #ifdef CONFIG_NUMA |
| 211 | #define PHB_SET_NODE(PHB, NODE) ((PHB)->node = (NODE)) |
| 212 | #else |
| 213 | #define PHB_SET_NODE(PHB, NODE) ((PHB)->node = -1) |
| 214 | #endif |
| 215 | |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 216 | #endif /* CONFIG_PPC64 */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 217 | |
| 218 | /* Get the PCI host controller for an OF device */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 219 | extern struct pci_controller *pci_find_hose_for_OF_device( |
| 220 | struct device_node* node); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 221 | |
| 222 | /* Fill up host controller resources from the OF node */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 223 | extern void pci_process_bridge_OF_ranges(struct pci_controller *hose, |
| 224 | struct device_node *dev, int primary); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 225 | |
Benjamin Herrenschmidt | 5131d4d | 2007-11-16 18:42:18 +1100 | [diff] [blame] | 226 | /* Allocate & free a PCI host bridge structure */ |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 227 | extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev); |
Benjamin Herrenschmidt | 5131d4d | 2007-11-16 18:42:18 +1100 | [diff] [blame] | 228 | extern void pcibios_free_controller(struct pci_controller *phb); |
Benjamin Herrenschmidt | 5328032 | 2008-10-27 19:48:29 +0000 | [diff] [blame] | 229 | extern void pcibios_setup_phb_resources(struct pci_controller *hose); |
Benjamin Herrenschmidt | 5131d4d | 2007-11-16 18:42:18 +1100 | [diff] [blame] | 230 | |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 231 | #ifdef CONFIG_PCI |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 232 | extern int pcibios_vaddr_is_ioport(void __iomem *address); |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 233 | #else |
Benjamin Herrenschmidt | 6dfbde2 | 2007-07-26 14:07:13 +1000 | [diff] [blame] | 234 | static inline int pcibios_vaddr_is_ioport(void __iomem *address) |
| 235 | { |
| 236 | return 0; |
| 237 | } |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 238 | #endif /* CONFIG_PCI */ |
Kumar Gala | 5531e41 | 2007-06-27 00:16:25 -0500 | [diff] [blame] | 239 | |
Stephen Rothwell | 7cd1de6 | 2007-12-06 18:02:28 +1100 | [diff] [blame] | 240 | #endif /* __KERNEL__ */ |
| 241 | #endif /* _ASM_POWERPC_PCI_BRIDGE_H */ |