Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pci.h |
| 3 | * |
| 4 | * PCI defines and function prototypes |
| 5 | * Copyright 1994, Drew Eckhardt |
| 6 | * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
| 7 | * |
| 8 | * For more information, please consult the following manuals (look at |
| 9 | * http://www.pcisig.com/ for how to get them): |
| 10 | * |
| 11 | * PCI BIOS Specification |
| 12 | * PCI Local Bus Specification |
| 13 | * PCI to PCI Bridge Specification |
| 14 | * PCI System Design Guide |
| 15 | */ |
| 16 | |
| 17 | #ifndef LINUX_PCI_H |
| 18 | #define LINUX_PCI_H |
| 19 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 20 | #include <linux/pci_regs.h> /* The pci register defines */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | /* |
| 23 | * The PCI interface treats multi-function devices as independent |
| 24 | * devices. The slot/function address of each device is encoded |
| 25 | * in a single byte as follows: |
| 26 | * |
| 27 | * 7:3 = slot |
| 28 | * 2:0 = function |
| 29 | */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 30 | #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
| 32 | #define PCI_FUNC(devfn) ((devfn) & 0x07) |
| 33 | |
| 34 | /* Ioctls for /proc/bus/pci/X/Y nodes. */ |
| 35 | #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) |
| 36 | #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ |
| 37 | #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ |
| 38 | #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ |
| 39 | #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ |
| 40 | |
| 41 | #ifdef __KERNEL__ |
| 42 | |
David Woodhouse | 778382e | 2006-04-29 01:46:02 +0100 | [diff] [blame] | 43 | #include <linux/mod_devicetable.h> |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/types.h> |
Sam Ravnborg | 98db6f1 | 2008-04-29 22:38:48 +0200 | [diff] [blame] | 46 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/ioport.h> |
| 48 | #include <linux/list.h> |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 49 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <linux/errno.h> |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 51 | #include <linux/kobject.h> |
Inaky Perez-Gonzalez | bae94d0 | 2006-11-22 12:40:31 -0800 | [diff] [blame] | 52 | #include <asm/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/device.h> |
| 54 | |
Adrian Bunk | 7e7a43c | 2006-12-19 13:12:07 -0800 | [diff] [blame] | 55 | /* Include the ID list */ |
| 56 | #include <linux/pci_ids.h> |
| 57 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 58 | /* pci_slot represents a physical slot */ |
| 59 | struct pci_slot { |
| 60 | struct pci_bus *bus; /* The bus this slot is on */ |
| 61 | struct list_head list; /* node in list of slots on this bus */ |
| 62 | struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ |
| 63 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ |
| 64 | struct kobject kobj; |
| 65 | }; |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
| 68 | enum pci_mmap_state { |
| 69 | pci_mmap_io, |
| 70 | pci_mmap_mem |
| 71 | }; |
| 72 | |
| 73 | /* This defines the direction arg to the DMA mapping routines. */ |
| 74 | #define PCI_DMA_BIDIRECTIONAL 0 |
| 75 | #define PCI_DMA_TODEVICE 1 |
| 76 | #define PCI_DMA_FROMDEVICE 2 |
| 77 | #define PCI_DMA_NONE 3 |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | #define DEVICE_COUNT_RESOURCE 12 |
| 80 | |
| 81 | typedef int __bitwise pci_power_t; |
| 82 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 83 | #define PCI_D0 ((pci_power_t __force) 0) |
| 84 | #define PCI_D1 ((pci_power_t __force) 1) |
| 85 | #define PCI_D2 ((pci_power_t __force) 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | #define PCI_D3hot ((pci_power_t __force) 3) |
| 87 | #define PCI_D3cold ((pci_power_t __force) 4) |
Daniel Ritz | 3fe9d19 | 2005-08-17 15:32:19 -0700 | [diff] [blame] | 88 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
Pavel Machek | 438510f | 2005-04-16 15:25:24 -0700 | [diff] [blame] | 89 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 91 | /** The pci_channel state describes connectivity between the CPU and |
| 92 | * the pci device. If some PCI bus between here and the pci device |
| 93 | * has crashed or locked up, this info is reflected here. |
| 94 | */ |
| 95 | typedef unsigned int __bitwise pci_channel_state_t; |
| 96 | |
| 97 | enum pci_channel_state { |
| 98 | /* I/O channel is in normal state */ |
| 99 | pci_channel_io_normal = (__force pci_channel_state_t) 1, |
| 100 | |
| 101 | /* I/O to channel is blocked */ |
| 102 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, |
| 103 | |
| 104 | /* PCI card is dead */ |
| 105 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, |
| 106 | }; |
| 107 | |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 108 | typedef unsigned int __bitwise pcie_reset_state_t; |
| 109 | |
| 110 | enum pcie_reset_state { |
| 111 | /* Reset is NOT asserted (Use to deassert reset) */ |
| 112 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, |
| 113 | |
| 114 | /* Use #PERST to reset PCI-E device */ |
| 115 | pcie_warm_reset = (__force pcie_reset_state_t) 2, |
| 116 | |
| 117 | /* Use PCI-E Hot Reset to reset device */ |
| 118 | pcie_hot_reset = (__force pcie_reset_state_t) 3 |
| 119 | }; |
| 120 | |
David Miller | ba698ad | 2007-10-25 01:16:30 -0700 | [diff] [blame] | 121 | typedef unsigned short __bitwise pci_dev_flags_t; |
| 122 | enum pci_dev_flags { |
| 123 | /* INTX_DISABLE in PCI_COMMAND register disables MSI |
| 124 | * generation too. |
| 125 | */ |
| 126 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, |
| 127 | }; |
| 128 | |
Michael S. Tsirkin | 6e325a6 | 2006-02-14 18:52:22 +0200 | [diff] [blame] | 129 | typedef unsigned short __bitwise pci_bus_flags_t; |
| 130 | enum pci_bus_flags { |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 131 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
| 132 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, |
Michael S. Tsirkin | 6e325a6 | 2006-02-14 18:52:22 +0200 | [diff] [blame] | 133 | }; |
| 134 | |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 135 | struct pci_cap_saved_state { |
| 136 | struct hlist_node next; |
| 137 | char cap_nr; |
| 138 | u32 data[0]; |
| 139 | }; |
| 140 | |
Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 141 | struct pcie_link_state; |
Jesse Barnes | ee69439 | 2008-04-28 12:30:35 -0700 | [diff] [blame] | 142 | struct pci_vpd; |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | /* |
| 145 | * The pci_dev structure is used to describe PCI devices. |
| 146 | */ |
| 147 | struct pci_dev { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | struct list_head bus_list; /* node in per-bus list */ |
| 149 | struct pci_bus *bus; /* bus this device is on */ |
| 150 | struct pci_bus *subordinate; /* bus this device bridges to */ |
| 151 | |
| 152 | void *sysdata; /* hook for sys-specific extension */ |
| 153 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 154 | struct pci_slot *slot; /* Physical slot this device is in */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | unsigned int devfn; /* encoded device & function index */ |
| 157 | unsigned short vendor; |
| 158 | unsigned short device; |
| 159 | unsigned short subsystem_vendor; |
| 160 | unsigned short subsystem_device; |
| 161 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
Auke Kok | b8a3a52 | 2007-06-08 15:46:30 -0700 | [diff] [blame] | 162 | u8 revision; /* PCI revision, low byte of class word */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
Keshavamurthy, Anil S | 994a65e | 2007-10-21 16:41:46 -0700 | [diff] [blame] | 164 | u8 pcie_type; /* PCI-E device/port type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | u8 rom_base_reg; /* which config register controls the ROM */ |
Kristen Accardi | ffeff78 | 2005-11-02 16:24:32 -0800 | [diff] [blame] | 166 | u8 pin; /* which interrupt pin this device uses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
| 168 | struct pci_driver *driver; /* which driver has allocated this device */ |
| 169 | u64 dma_mask; /* Mask of the bits of bus address this |
| 170 | device implements. Normally this is |
| 171 | 0xffffffff. You only need to change |
| 172 | this if your device has broken DMA |
| 173 | or supports 64-bit transfers. */ |
| 174 | |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 175 | struct device_dma_parameters dma_parms; |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
| 178 | this is D0-D3, D0 being fully functional, |
| 179 | and D3 being off. */ |
| 180 | |
Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 181 | #ifdef CONFIG_PCIEASPM |
| 182 | struct pcie_link_state *link_state; /* ASPM link state. */ |
| 183 | #endif |
| 184 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 185 | pci_channel_state_t error_state; /* current connectivity state */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | struct device dev; /* Generic device interface */ |
| 187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | int cfg_size; /* Size of configuration space */ |
| 189 | |
| 190 | /* |
| 191 | * Instead of touching interrupt line and base address registers |
| 192 | * directly, use the values stored here. They might be different! |
| 193 | */ |
| 194 | unsigned int irq; |
| 195 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
| 196 | |
| 197 | /* These fields are used by common fixups */ |
| 198 | unsigned int transparent:1; /* Transparent PCI bridge */ |
| 199 | unsigned int multifunction:1;/* Part of multi-function device */ |
| 200 | /* keep track of device state */ |
Greg Kroah-Hartman | 8a1bc90 | 2008-02-14 14:56:56 -0800 | [diff] [blame] | 201 | unsigned int is_added:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | unsigned int is_busmaster:1; /* device is busmaster */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 203 | unsigned int no_msi:1; /* device may not use msi */ |
Kristen Carlson Accardi | ffadcc2 | 2006-07-12 08:59:00 -0700 | [diff] [blame] | 204 | unsigned int no_d1d2:1; /* only allow d0 or d3 */ |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 205 | unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ |
Doug Thompson | bd8481e | 2006-05-08 17:06:09 -0700 | [diff] [blame] | 206 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
Shaohua Li | 99dc804 | 2006-05-26 10:58:27 +0800 | [diff] [blame] | 207 | unsigned int msi_enabled:1; |
| 208 | unsigned int msix_enabled:1; |
Tejun Heo | 9ac7849 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 209 | unsigned int is_managed:1; |
Keshavamurthy, Anil S | 994a65e | 2007-10-21 16:41:46 -0700 | [diff] [blame] | 210 | unsigned int is_pcie:1; |
David Miller | ba698ad | 2007-10-25 01:16:30 -0700 | [diff] [blame] | 211 | pci_dev_flags_t dev_flags; |
Inaky Perez-Gonzalez | bae94d0 | 2006-11-22 12:40:31 -0800 | [diff] [blame] | 212 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 215 | struct hlist_head saved_cap_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
| 217 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ |
| 218 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
Eric W. Biederman | ded86d8 | 2007-01-28 12:42:52 -0700 | [diff] [blame] | 219 | #ifdef CONFIG_PCI_MSI |
Michael Ellerman | 4aa9bc9 | 2007-04-05 17:19:10 +1000 | [diff] [blame] | 220 | struct list_head msi_list; |
Eric W. Biederman | ded86d8 | 2007-01-28 12:42:52 -0700 | [diff] [blame] | 221 | #endif |
Ben Hutchings | 94e6108 | 2008-03-05 16:52:39 +0000 | [diff] [blame] | 222 | struct pci_vpd *vpd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | }; |
| 224 | |
Michael Ellerman | 6589121 | 2007-04-05 17:19:08 +1000 | [diff] [blame] | 225 | extern struct pci_dev *alloc_pci_dev(void); |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) |
| 228 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
| 229 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
| 230 | |
Linas Vepstas | a7369f1 | 2006-12-12 16:55:59 -0600 | [diff] [blame] | 231 | static inline int pci_channel_offline(struct pci_dev *pdev) |
| 232 | { |
| 233 | return (pdev->error_state != pci_channel_io_normal); |
| 234 | } |
| 235 | |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 236 | static inline struct pci_cap_saved_state *pci_find_saved_cap( |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 237 | struct pci_dev *pci_dev, char cap) |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 238 | { |
| 239 | struct pci_cap_saved_state *tmp; |
| 240 | struct hlist_node *pos; |
| 241 | |
| 242 | hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { |
| 243 | if (tmp->cap_nr == cap) |
| 244 | return tmp; |
| 245 | } |
| 246 | return NULL; |
| 247 | } |
| 248 | |
| 249 | static inline void pci_add_saved_cap(struct pci_dev *pci_dev, |
| 250 | struct pci_cap_saved_state *new_cap) |
| 251 | { |
| 252 | hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space); |
| 253 | } |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | /* |
| 256 | * For PCI devices, the region numbers are assigned this way: |
| 257 | * |
| 258 | * 0-5 standard PCI regions |
| 259 | * 6 expansion ROM |
| 260 | * 7-10 bridges: address space assigned to buses behind the bridge |
| 261 | */ |
| 262 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 263 | #define PCI_ROM_RESOURCE 6 |
| 264 | #define PCI_BRIDGE_RESOURCES 7 |
| 265 | #define PCI_NUM_RESOURCES 11 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
| 267 | #ifndef PCI_BUS_NUM_RESOURCES |
Yinghai Lu | 30a18d6 | 2008-02-19 03:21:20 -0800 | [diff] [blame] | 268 | #define PCI_BUS_NUM_RESOURCES 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | #endif |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 270 | |
| 271 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | struct pci_bus { |
| 274 | struct list_head node; /* node in list of buses */ |
| 275 | struct pci_bus *parent; /* parent bus this bridge is on */ |
| 276 | struct list_head children; /* list of child buses */ |
| 277 | struct list_head devices; /* list of devices on this bus */ |
| 278 | struct pci_dev *self; /* bridge device as seen by parent */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 279 | struct list_head slots; /* list of slots on this bus */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | struct resource *resource[PCI_BUS_NUM_RESOURCES]; |
| 281 | /* address space routed to this bus */ |
| 282 | |
| 283 | struct pci_ops *ops; /* configuration access functions */ |
| 284 | void *sysdata; /* hook for sys-specific extension */ |
| 285 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ |
| 286 | |
| 287 | unsigned char number; /* bus number */ |
| 288 | unsigned char primary; /* number of primary bridge */ |
| 289 | unsigned char secondary; /* number of secondary bridge */ |
| 290 | unsigned char subordinate; /* max number of subordinate buses */ |
| 291 | |
| 292 | char name[48]; |
| 293 | |
| 294 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ |
Michael S. Tsirkin | 6e325a6 | 2006-02-14 18:52:22 +0200 | [diff] [blame] | 295 | pci_bus_flags_t bus_flags; /* Inherited by child busses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | struct device *bridge; |
Greg Kroah-Hartman | fd7d1ce | 2007-05-22 22:47:54 -0400 | [diff] [blame] | 297 | struct device dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
| 299 | struct bin_attribute *legacy_mem; /* legacy mem */ |
Greg Kroah-Hartman | cc74d96 | 2008-03-12 21:48:03 -0700 | [diff] [blame] | 300 | unsigned int is_added:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | }; |
| 302 | |
| 303 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) |
Greg Kroah-Hartman | fd7d1ce | 2007-05-22 22:47:54 -0400 | [diff] [blame] | 304 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
| 306 | /* |
| 307 | * Error values that may be returned by PCI functions. |
| 308 | */ |
| 309 | #define PCIBIOS_SUCCESSFUL 0x00 |
| 310 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
| 311 | #define PCIBIOS_BAD_VENDOR_ID 0x83 |
| 312 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
| 313 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
| 314 | #define PCIBIOS_SET_FAILED 0x88 |
| 315 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
| 316 | |
| 317 | /* Low-level architecture-dependent routines */ |
| 318 | |
| 319 | struct pci_ops { |
| 320 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
| 321 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
| 322 | }; |
| 323 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 324 | /* |
| 325 | * ACPI needs to be able to access PCI config space before we've done a |
| 326 | * PCI bus scan and created pci_bus structures. |
| 327 | */ |
| 328 | extern int raw_pci_read(unsigned int domain, unsigned int bus, |
| 329 | unsigned int devfn, int reg, int len, u32 *val); |
| 330 | extern int raw_pci_write(unsigned int domain, unsigned int bus, |
| 331 | unsigned int devfn, int reg, int len, u32 val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | struct pci_bus_region { |
Benjamin Herrenschmidt | c40a22e | 2007-12-10 17:32:15 +1100 | [diff] [blame] | 334 | resource_size_t start; |
| 335 | resource_size_t end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | }; |
| 337 | |
| 338 | struct pci_dynids { |
| 339 | spinlock_t lock; /* protects list, index */ |
| 340 | struct list_head list; /* for IDs added at runtime */ |
Wang Chen | 9433f6d | 2008-06-26 10:50:04 +0800 | [diff] [blame] | 341 | unsigned int use_driver_data:1; /* pci_device_id->driver_data is used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | }; |
| 343 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 344 | /* ---------------------------------------------------------------- */ |
| 345 | /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides |
Rolf Eike Beer | 579082d | 2007-07-10 13:35:05 +0200 | [diff] [blame] | 346 | * a set of callbacks in struct pci_error_handlers, then that device driver |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 347 | * will be notified of PCI bus errors, and will be driven to recovery |
| 348 | * when an error occurs. |
| 349 | */ |
| 350 | |
| 351 | typedef unsigned int __bitwise pci_ers_result_t; |
| 352 | |
| 353 | enum pci_ers_result { |
| 354 | /* no result/none/not supported in device driver */ |
| 355 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, |
| 356 | |
| 357 | /* Device driver can recover without slot reset */ |
| 358 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, |
| 359 | |
| 360 | /* Device driver wants slot to be reset. */ |
| 361 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, |
| 362 | |
| 363 | /* Device has completely failed, is unrecoverable */ |
| 364 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, |
| 365 | |
| 366 | /* Device driver is fully recovered and operational */ |
| 367 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, |
| 368 | }; |
| 369 | |
| 370 | /* PCI bus error event callbacks */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 371 | struct pci_error_handlers { |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 372 | /* PCI bus error detected on this device */ |
| 373 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 374 | enum pci_channel_state error); |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 375 | |
| 376 | /* MMIO has been re-enabled, but not DMA */ |
| 377 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); |
| 378 | |
| 379 | /* PCI Express link has been reset */ |
| 380 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); |
| 381 | |
| 382 | /* PCI slot has been reset */ |
| 383 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); |
| 384 | |
| 385 | /* Device driver may resume normal operations */ |
| 386 | void (*resume)(struct pci_dev *dev); |
| 387 | }; |
| 388 | |
| 389 | /* ---------------------------------------------------------------- */ |
| 390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | struct module; |
| 392 | struct pci_driver { |
| 393 | struct list_head node; |
| 394 | char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
| 396 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ |
| 397 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ |
| 398 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 399 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
| 400 | int (*resume_early) (struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 402 | void (*shutdown) (struct pci_dev *dev); |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 403 | struct pm_ext_ops *pm; |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 404 | struct pci_error_handlers *err_handler; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | struct device_driver driver; |
| 406 | struct pci_dynids dynids; |
| 407 | }; |
| 408 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 409 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | /** |
Andrew Morton | 9f9351b | 2008-03-10 11:43:34 -0700 | [diff] [blame] | 412 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
Jonas Bonn | 90a1ba0 | 2008-02-22 11:02:21 +0100 | [diff] [blame] | 413 | * @_table: device table name |
| 414 | * |
| 415 | * This macro is used to create a struct pci_device_id array (a device table) |
| 416 | * in a generic manner. |
| 417 | */ |
Andrew Morton | 9f9351b | 2008-03-10 11:43:34 -0700 | [diff] [blame] | 418 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
Jonas Bonn | 90a1ba0 | 2008-02-22 11:02:21 +0100 | [diff] [blame] | 419 | const struct pci_device_id _table[] __devinitconst |
| 420 | |
| 421 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | * PCI_DEVICE - macro used to describe a specific pci device |
| 423 | * @vend: the 16 bit PCI Vendor ID |
| 424 | * @dev: the 16 bit PCI Device ID |
| 425 | * |
| 426 | * This macro is used to create a struct pci_device_id that matches a |
| 427 | * specific device. The subvendor and subdevice fields will be set to |
| 428 | * PCI_ANY_ID. |
| 429 | */ |
| 430 | #define PCI_DEVICE(vend,dev) \ |
| 431 | .vendor = (vend), .device = (dev), \ |
| 432 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 433 | |
| 434 | /** |
| 435 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class |
| 436 | * @dev_class: the class, subclass, prog-if triple for this device |
| 437 | * @dev_class_mask: the class mask for this device |
| 438 | * |
| 439 | * This macro is used to create a struct pci_device_id that matches a |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 440 | * specific PCI class. The vendor, device, subvendor, and subdevice |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | * fields will be set to PCI_ANY_ID. |
| 442 | */ |
| 443 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
| 444 | .class = (dev_class), .class_mask = (dev_class_mask), \ |
| 445 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
| 446 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 447 | |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 448 | /** |
| 449 | * PCI_VDEVICE - macro used to describe a specific pci device in short form |
| 450 | * @vend: the vendor name |
| 451 | * @dev: the 16 bit PCI Device ID |
| 452 | * |
| 453 | * This macro is used to create a struct pci_device_id that matches a |
| 454 | * specific PCI device. The subvendor, and subdevice fields will be set |
| 455 | * to PCI_ANY_ID. The macro allows the next field to follow as the device |
| 456 | * private data. |
| 457 | */ |
| 458 | |
| 459 | #define PCI_VDEVICE(vendor, device) \ |
| 460 | PCI_VENDOR_ID_##vendor, (device), \ |
| 461 | PCI_ANY_ID, PCI_ANY_ID, 0, 0 |
| 462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | /* these external functions are only available when PCI support is enabled */ |
| 464 | #ifdef CONFIG_PCI |
| 465 | |
| 466 | extern struct bus_type pci_bus_type; |
| 467 | |
| 468 | /* Do NOT directly access these two variables, unless you are arch specific pci |
| 469 | * code, or pci core code. */ |
| 470 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
Zhang, Yanmin | ed4aaad | 2007-07-15 23:39:39 -0700 | [diff] [blame] | 471 | /* Some device drivers need know if pci is initiated */ |
| 472 | extern int no_pci_devices(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
| 474 | void pcibios_fixup_bus(struct pci_bus *); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 475 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 476 | char *pcibios_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
| 478 | /* Used only when drivers/pci/setup.c is used */ |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 479 | void pcibios_align_resource(void *, struct resource *, resource_size_t, |
| 480 | resource_size_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | void pcibios_update_irq(struct pci_dev *, int irq); |
| 482 | |
| 483 | /* Generic PCI functions used internally */ |
| 484 | |
| 485 | extern struct pci_bus *pci_find_bus(int domain, int busnr); |
Rajesh Shah | c431ada | 2005-04-28 00:25:45 -0700 | [diff] [blame] | 486 | void pci_bus_add_devices(struct pci_bus *bus); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 487 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, |
| 488 | struct pci_ops *ops, void *sysdata); |
Sam Ravnborg | 98db6f1 | 2008-04-29 22:38:48 +0200 | [diff] [blame] | 489 | static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 490 | void *sysdata) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | { |
Rajesh Shah | c431ada | 2005-04-28 00:25:45 -0700 | [diff] [blame] | 492 | struct pci_bus *root_bus; |
| 493 | root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); |
| 494 | if (root_bus) |
| 495 | pci_bus_add_devices(root_bus); |
| 496 | return root_bus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 498 | struct pci_bus *pci_create_bus(struct device *parent, int bus, |
| 499 | struct pci_ops *ops, void *sysdata); |
| 500 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
| 501 | int busnr); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 502 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
| 503 | const char *name); |
| 504 | void pci_destroy_slot(struct pci_slot *slot); |
| 505 | void pci_update_slot_number(struct pci_slot *slot, int slot_nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 507 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
Paul Mackerras | cdb9b9f | 2005-09-06 09:31:03 +1000 | [diff] [blame] | 508 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
Greg Kroah-Hartman | b19441a | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 510 | int __must_check pci_bus_add_device(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | void pci_read_bridge_bases(struct pci_bus *child); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 512 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
| 513 | struct resource *res); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
| 515 | extern struct pci_dev *pci_dev_get(struct pci_dev *dev); |
| 516 | extern void pci_dev_put(struct pci_dev *dev); |
| 517 | extern void pci_remove_bus(struct pci_bus *b); |
| 518 | extern void pci_remove_bus_device(struct pci_dev *dev); |
Satoru Takeuchi | 24f8aa9 | 2006-09-12 10:16:36 -0700 | [diff] [blame] | 519 | extern void pci_stop_bus_device(struct pci_dev *dev); |
Dominik Brodowski | b3743fa | 2005-09-09 13:03:23 -0700 | [diff] [blame] | 520 | void pci_setup_cardbus(struct pci_bus *bus); |
Matt Domsch | 6b4b78f | 2006-09-29 15:23:23 -0500 | [diff] [blame] | 521 | extern void pci_sort_breadthfirst(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | /* Generic PCI functions exported to card drivers */ |
| 524 | |
Jeff Garzik | bd3989e | 2007-10-29 09:48:09 -0400 | [diff] [blame] | 525 | #ifdef CONFIG_PCI_LEGACY |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 526 | struct pci_dev __deprecated *pci_find_device(unsigned int vendor, |
| 527 | unsigned int device, |
| 528 | const struct pci_dev *from); |
| 529 | struct pci_dev __deprecated *pci_find_slot(unsigned int bus, |
| 530 | unsigned int devfn); |
Jeff Garzik | bd3989e | 2007-10-29 09:48:09 -0400 | [diff] [blame] | 531 | #endif /* CONFIG_PCI_LEGACY */ |
| 532 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 533 | int pci_find_capability(struct pci_dev *dev, int cap); |
| 534 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); |
| 535 | int pci_find_ext_capability(struct pci_dev *dev, int cap); |
| 536 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
| 537 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); |
Alan Cox | 29f3eb6 | 2006-10-16 16:20:21 -0700 | [diff] [blame] | 538 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 540 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
| 541 | struct pci_dev *from); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 542 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | unsigned int ss_vendor, unsigned int ss_device, |
Greg Kroah-Hartman | 95247b5 | 2008-02-13 11:03:58 -0800 | [diff] [blame] | 544 | const struct pci_dev *from); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 545 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
| 546 | struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); |
| 547 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | int pci_dev_present(const struct pci_device_id *ids); |
| 549 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 550 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
| 551 | int where, u8 *val); |
| 552 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, |
| 553 | int where, u16 *val); |
| 554 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, |
| 555 | int where, u32 *val); |
| 556 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, |
| 557 | int where, u8 val); |
| 558 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, |
| 559 | int where, u16 val); |
| 560 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, |
| 561 | int where, u32 val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
| 563 | static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) |
| 564 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 565 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) |
| 568 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 569 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 571 | static inline int pci_read_config_dword(struct pci_dev *dev, int where, |
| 572 | u32 *val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 574 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
| 576 | static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) |
| 577 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 578 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | } |
| 580 | static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) |
| 581 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 582 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 584 | static inline int pci_write_config_dword(struct pci_dev *dev, int where, |
| 585 | u32 val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 587 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | } |
| 589 | |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 590 | int __must_check pci_enable_device(struct pci_dev *dev); |
Benjamin Herrenschmidt | b718989 | 2007-12-20 15:28:08 +1100 | [diff] [blame] | 591 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
| 592 | int __must_check pci_enable_device_mem(struct pci_dev *dev); |
Tejun Heo | 0b62e13 | 2007-07-27 14:43:35 +0900 | [diff] [blame] | 593 | int __must_check pci_reenable_device(struct pci_dev *); |
Tejun Heo | 9ac7849 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 594 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
| 595 | void pcim_pin_device(struct pci_dev *pdev); |
| 596 | |
| 597 | static inline int pci_is_managed(struct pci_dev *pdev) |
| 598 | { |
| 599 | return pdev->is_managed; |
| 600 | } |
| 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | void pci_disable_device(struct pci_dev *dev); |
| 603 | void pci_set_master(struct pci_dev *dev); |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 604 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | #define HAVE_PCI_SET_MWI |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 606 | int __must_check pci_set_mwi(struct pci_dev *dev); |
Randy Dunlap | 694625c | 2007-07-09 11:55:54 -0700 | [diff] [blame] | 607 | int pci_try_set_mwi(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | void pci_clear_mwi(struct pci_dev *dev); |
Brett M Russ | a04ce0f | 2005-08-15 15:23:41 -0400 | [diff] [blame] | 609 | void pci_intx(struct pci_dev *dev, int enable); |
Eric W. Biederman | f5f2b13 | 2007-03-05 00:30:07 -0800 | [diff] [blame] | 610 | void pci_msi_off(struct pci_dev *dev); |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 611 | int pci_set_dma_mask(struct pci_dev *dev, u64 mask); |
| 612 | int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 613 | int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); |
FUJITA Tomonori | 59fc67d | 2008-02-04 22:28:14 -0800 | [diff] [blame] | 614 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 615 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
| 616 | int pcix_get_mmrbc(struct pci_dev *dev); |
| 617 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); |
Brice Goglin | 2637e5b | 2007-08-14 12:43:48 +0200 | [diff] [blame] | 618 | int pcie_get_readrq(struct pci_dev *dev); |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 619 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
John W. Linville | 064b53d | 2005-07-27 10:19:44 -0400 | [diff] [blame] | 620 | void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 621 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
Hidetoshi Seto | c87deff | 2006-12-18 10:31:06 +0900 | [diff] [blame] | 622 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
| 624 | /* ROM control related routines */ |
Dave Jones | 144a50e | 2005-08-09 00:20:10 -0400 | [diff] [blame] | 625 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
John Keller | d7ad225 | 2007-07-09 11:42:24 -0700 | [diff] [blame] | 627 | size_t pci_get_rom_size(void __iomem *rom, size_t size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | /* Power management related routines */ |
| 630 | int pci_save_state(struct pci_dev *dev); |
| 631 | int pci_restore_state(struct pci_dev *dev); |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 632 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
| 633 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
| 634 | int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
Kumar Gala | ce5ccde | 2007-07-16 23:27:10 -0500 | [diff] [blame] | 636 | /* Functions for PCI Hotplug drivers to use */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 637 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
Kumar Gala | ce5ccde | 2007-07-16 23:27:10 -0500 | [diff] [blame] | 638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
| 640 | void pci_bus_assign_resources(struct pci_bus *bus); |
| 641 | void pci_bus_size_bridges(struct pci_bus *bus); |
| 642 | int pci_claim_resource(struct pci_dev *, int); |
| 643 | void pci_assign_unassigned_resources(void); |
| 644 | void pdev_enable_device(struct pci_dev *); |
| 645 | void pdev_sort_resources(struct pci_dev *, struct resource_list *); |
Bjorn Helgaas | 842de40 | 2008-03-04 11:56:47 -0700 | [diff] [blame] | 646 | int pci_enable_resources(struct pci_dev *, int mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
| 648 | int (*)(struct pci_dev *, u8, u8)); |
| 649 | #define HAVE_PCI_REQ_REGIONS 2 |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 650 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | void pci_release_regions(struct pci_dev *); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 652 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | void pci_release_region(struct pci_dev *, int); |
Hidetoshi Seto | c87deff | 2006-12-18 10:31:06 +0900 | [diff] [blame] | 654 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
| 655 | void pci_release_selected_regions(struct pci_dev *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | /* drivers/pci/bus.c */ |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 658 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
| 659 | struct resource *res, resource_size_t size, |
| 660 | resource_size_t align, resource_size_t min, |
| 661 | unsigned int type_mask, |
| 662 | void (*alignf)(void *, struct resource *, |
| 663 | resource_size_t, resource_size_t), |
| 664 | void *alignf_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | void pci_enable_bridges(struct pci_bus *bus); |
| 666 | |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 667 | /* Proper probing supporting hot-pluggable devices */ |
Greg Kroah-Hartman | 725522b | 2007-01-15 11:50:02 -0800 | [diff] [blame] | 668 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
| 669 | const char *mod_name); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 670 | static inline int __must_check pci_register_driver(struct pci_driver *driver) |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 671 | { |
Greg Kroah-Hartman | 725522b | 2007-01-15 11:50:02 -0800 | [diff] [blame] | 672 | return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 673 | } |
| 674 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 675 | void pci_unregister_driver(struct pci_driver *dev); |
| 676 | void pci_remove_behind_bridge(struct pci_dev *dev); |
| 677 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
| 678 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
| 679 | struct pci_dev *dev); |
| 680 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, |
| 681 | int pass); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
Paul Mackerras | cecf486 | 2005-08-18 14:33:01 +1000 | [diff] [blame] | 683 | void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), |
| 684 | void *userdata); |
Yinghai Lu | 70b9f7d | 2008-04-28 16:27:23 -0700 | [diff] [blame] | 685 | int pci_cfg_space_size_ext(struct pci_dev *dev); |
Benjamin Herrenschmidt | ac7dc65 | 2005-12-13 18:09:16 +1100 | [diff] [blame] | 686 | int pci_cfg_space_size(struct pci_dev *dev); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 687 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
Paul Mackerras | cecf486 | 2005-08-18 14:33:01 +1000 | [diff] [blame] | 688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
| 690 | |
| 691 | #include <linux/dmapool.h> |
| 692 | |
| 693 | #define pci_pool dma_pool |
| 694 | #define pci_pool_create(name, pdev, size, align, allocation) \ |
| 695 | dma_pool_create(name, &pdev->dev, size, align, allocation) |
| 696 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
| 697 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
| 698 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
| 699 | |
David S. Miller | e24c2d9 | 2005-06-02 12:55:50 -0700 | [diff] [blame] | 700 | enum pci_dma_burst_strategy { |
| 701 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, |
| 702 | strategy_parameter is N/A */ |
| 703 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter |
| 704 | byte boundaries */ |
| 705 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of |
| 706 | strategy_parameter byte boundaries */ |
| 707 | }; |
| 708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | struct msix_entry { |
| 710 | u16 vector; /* kernel uses to write allocated vector */ |
| 711 | u16 entry; /* driver uses to specify entry, OS writes */ |
| 712 | }; |
| 713 | |
Eric W. Biederman | 0366f8f | 2006-10-04 02:16:33 -0700 | [diff] [blame] | 714 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | #ifndef CONFIG_PCI_MSI |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 716 | static inline int pci_enable_msi(struct pci_dev *dev) |
| 717 | { |
| 718 | return -1; |
| 719 | } |
| 720 | |
Yinghai Lu | d52877c | 2008-04-23 14:58:09 -0700 | [diff] [blame] | 721 | static inline void pci_msi_shutdown(struct pci_dev *dev) |
| 722 | { } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 723 | static inline void pci_disable_msi(struct pci_dev *dev) |
| 724 | { } |
| 725 | |
| 726 | static inline int pci_enable_msix(struct pci_dev *dev, |
| 727 | struct msix_entry *entries, int nvec) |
| 728 | { |
| 729 | return -1; |
| 730 | } |
| 731 | |
Yinghai Lu | d52877c | 2008-04-23 14:58:09 -0700 | [diff] [blame] | 732 | static inline void pci_msix_shutdown(struct pci_dev *dev) |
| 733 | { } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 734 | static inline void pci_disable_msix(struct pci_dev *dev) |
| 735 | { } |
| 736 | |
| 737 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) |
| 738 | { } |
| 739 | |
| 740 | static inline void pci_restore_msi_state(struct pci_dev *dev) |
| 741 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | extern int pci_enable_msi(struct pci_dev *dev); |
Yinghai Lu | d52877c | 2008-04-23 14:58:09 -0700 | [diff] [blame] | 744 | extern void pci_msi_shutdown(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | extern void pci_disable_msi(struct pci_dev *dev); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 746 | extern int pci_enable_msix(struct pci_dev *dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | struct msix_entry *entries, int nvec); |
Yinghai Lu | d52877c | 2008-04-23 14:58:09 -0700 | [diff] [blame] | 748 | extern void pci_msix_shutdown(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | extern void pci_disable_msix(struct pci_dev *dev); |
| 750 | extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); |
Linas Vepstas | 94688cf | 2007-11-07 15:43:59 -0600 | [diff] [blame] | 751 | extern void pci_restore_msi_state(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | #endif |
| 753 | |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 754 | #ifdef CONFIG_HT_IRQ |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 755 | /* The functions a driver should call */ |
| 756 | int ht_create_irq(struct pci_dev *dev, int idx); |
| 757 | void ht_destroy_irq(unsigned int irq); |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 758 | #endif /* CONFIG_HT_IRQ */ |
| 759 | |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 760 | extern void pci_block_user_cfg_access(struct pci_dev *dev); |
| 761 | extern void pci_unblock_user_cfg_access(struct pci_dev *dev); |
| 762 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 763 | /* |
| 764 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
| 765 | * a PCI domain is defined to be a set of PCI busses which share |
| 766 | * configuration space. |
| 767 | */ |
Jeff Garzik | 32a2eea | 2007-10-11 16:57:27 -0400 | [diff] [blame] | 768 | #ifdef CONFIG_PCI_DOMAINS |
| 769 | extern int pci_domains_supported; |
| 770 | #else |
| 771 | enum { pci_domains_supported = 0 }; |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 772 | static inline int pci_domain_nr(struct pci_bus *bus) |
| 773 | { |
| 774 | return 0; |
| 775 | } |
| 776 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 777 | static inline int pci_proc_domain(struct pci_bus *bus) |
| 778 | { |
| 779 | return 0; |
| 780 | } |
Jeff Garzik | 32a2eea | 2007-10-11 16:57:27 -0400 | [diff] [blame] | 781 | #endif /* CONFIG_PCI_DOMAINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 783 | #else /* CONFIG_PCI is not enabled */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
| 785 | /* |
| 786 | * If the system does not have PCI, clearly these return errors. Define |
| 787 | * these as simple inline functions to avoid hair in drivers. |
| 788 | */ |
| 789 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 790 | #define _PCI_NOP(o, s, t) \ |
| 791 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ |
| 792 | int where, t val) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 794 | |
| 795 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ |
| 796 | _PCI_NOP(o, word, u16 x) \ |
| 797 | _PCI_NOP(o, dword, u32 x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | _PCI_NOP_ALL(read, *) |
| 799 | _PCI_NOP_ALL(write,) |
| 800 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 801 | static inline struct pci_dev *pci_find_device(unsigned int vendor, |
| 802 | unsigned int device, |
| 803 | const struct pci_dev *from) |
| 804 | { |
| 805 | return NULL; |
| 806 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 808 | static inline struct pci_dev *pci_find_slot(unsigned int bus, |
| 809 | unsigned int devfn) |
| 810 | { |
| 811 | return NULL; |
| 812 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 814 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 815 | unsigned int device, |
| 816 | struct pci_dev *from) |
| 817 | { |
| 818 | return NULL; |
| 819 | } |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 820 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 821 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
| 822 | unsigned int device, |
| 823 | unsigned int ss_vendor, |
| 824 | unsigned int ss_device, |
Greg Kroah-Hartman | 95247b5 | 2008-02-13 11:03:58 -0800 | [diff] [blame] | 825 | const struct pci_dev *from) |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 826 | { |
| 827 | return NULL; |
| 828 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 830 | static inline struct pci_dev *pci_get_class(unsigned int class, |
| 831 | struct pci_dev *from) |
| 832 | { |
| 833 | return NULL; |
| 834 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
| 836 | #define pci_dev_present(ids) (0) |
Zhang, Yanmin | ed4aaad | 2007-07-15 23:39:39 -0700 | [diff] [blame] | 837 | #define no_pci_devices() (1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | #define pci_dev_put(dev) do { } while (0) |
| 839 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 840 | static inline void pci_set_master(struct pci_dev *dev) |
| 841 | { } |
| 842 | |
| 843 | static inline int pci_enable_device(struct pci_dev *dev) |
| 844 | { |
| 845 | return -EIO; |
| 846 | } |
| 847 | |
| 848 | static inline void pci_disable_device(struct pci_dev *dev) |
| 849 | { } |
| 850 | |
| 851 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) |
| 852 | { |
| 853 | return -EIO; |
| 854 | } |
| 855 | |
Randy Dunlap | 80be038 | 2008-06-30 11:35:53 -0700 | [diff] [blame^] | 856 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) |
| 857 | { |
| 858 | return -EIO; |
| 859 | } |
| 860 | |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 861 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
| 862 | unsigned int size) |
| 863 | { |
| 864 | return -EIO; |
| 865 | } |
| 866 | |
FUJITA Tomonori | 59fc67d | 2008-02-04 22:28:14 -0800 | [diff] [blame] | 867 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
| 868 | unsigned long mask) |
| 869 | { |
| 870 | return -EIO; |
| 871 | } |
| 872 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 873 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
| 874 | { |
| 875 | return -EBUSY; |
| 876 | } |
| 877 | |
| 878 | static inline int __pci_register_driver(struct pci_driver *drv, |
| 879 | struct module *owner) |
| 880 | { |
| 881 | return 0; |
| 882 | } |
| 883 | |
| 884 | static inline int pci_register_driver(struct pci_driver *drv) |
| 885 | { |
| 886 | return 0; |
| 887 | } |
| 888 | |
| 889 | static inline void pci_unregister_driver(struct pci_driver *drv) |
| 890 | { } |
| 891 | |
| 892 | static inline int pci_find_capability(struct pci_dev *dev, int cap) |
| 893 | { |
| 894 | return 0; |
| 895 | } |
| 896 | |
| 897 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
| 898 | int cap) |
| 899 | { |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
| 904 | { |
| 905 | return 0; |
| 906 | } |
| 907 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | /* Power management related routines */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 909 | static inline int pci_save_state(struct pci_dev *dev) |
| 910 | { |
| 911 | return 0; |
| 912 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 914 | static inline int pci_restore_state(struct pci_dev *dev) |
| 915 | { |
| 916 | return 0; |
| 917 | } |
| 918 | |
| 919 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
| 920 | { |
| 921 | return 0; |
| 922 | } |
| 923 | |
| 924 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
| 925 | pm_message_t state) |
| 926 | { |
| 927 | return PCI_D0; |
| 928 | } |
| 929 | |
| 930 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| 931 | int enable) |
| 932 | { |
| 933 | return 0; |
| 934 | } |
| 935 | |
| 936 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
| 937 | { |
| 938 | return -EIO; |
| 939 | } |
| 940 | |
| 941 | static inline void pci_release_regions(struct pci_dev *dev) |
| 942 | { } |
Sergei Shtylyov | 0da0ead | 2007-04-01 21:13:58 +0400 | [diff] [blame] | 943 | |
Kumar Gala | a46e812 | 2005-07-29 12:16:27 -0700 | [diff] [blame] | 944 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
| 945 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 946 | static inline void pci_block_user_cfg_access(struct pci_dev *dev) |
| 947 | { } |
| 948 | |
| 949 | static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) |
| 950 | { } |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 951 | |
Randy Dunlap | d80d021 | 2007-07-01 12:06:37 -0700 | [diff] [blame] | 952 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
| 953 | { return NULL; } |
| 954 | |
| 955 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
| 956 | unsigned int devfn) |
| 957 | { return NULL; } |
| 958 | |
| 959 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| 960 | unsigned int devfn) |
| 961 | { return NULL; } |
| 962 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 963 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 965 | /* Include architecture-dependent settings and functions */ |
| 966 | |
| 967 | #include <asm/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
| 969 | /* these helpers provide future and backwards compatibility |
| 970 | * for accessing popular PCI BAR info */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 971 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
| 972 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) |
| 973 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | #define pci_resource_len(dev,bar) \ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 975 | ((pci_resource_start((dev), (bar)) == 0 && \ |
| 976 | pci_resource_end((dev), (bar)) == \ |
| 977 | pci_resource_start((dev), (bar))) ? 0 : \ |
| 978 | \ |
| 979 | (pci_resource_end((dev), (bar)) - \ |
| 980 | pci_resource_start((dev), (bar)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | |
| 982 | /* Similar to the helpers above, these manipulate per-pci_dev |
| 983 | * driver-specific data. They are really just a wrapper around |
| 984 | * the generic device structure functions of these calls. |
| 985 | */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 986 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | { |
| 988 | return dev_get_drvdata(&pdev->dev); |
| 989 | } |
| 990 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 991 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | { |
| 993 | dev_set_drvdata(&pdev->dev, data); |
| 994 | } |
| 995 | |
| 996 | /* If you want to know what to call your pci_dev, ask this function. |
| 997 | * Again, it's a wrapper around the generic device. |
| 998 | */ |
| 999 | static inline char *pci_name(struct pci_dev *pdev) |
| 1000 | { |
| 1001 | return pdev->dev.bus_id; |
| 1002 | } |
| 1003 | |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 1004 | |
| 1005 | /* Some archs don't want to expose struct resource to userland as-is |
| 1006 | * in sysfs and /proc |
| 1007 | */ |
| 1008 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER |
| 1009 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1010 | const struct resource *rsrc, resource_size_t *start, |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 1011 | resource_size_t *end) |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 1012 | { |
| 1013 | *start = rsrc->start; |
| 1014 | *end = rsrc->end; |
| 1015 | } |
| 1016 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
| 1017 | |
| 1018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | /* |
| 1020 | * The world is not perfect and supplies us with broken PCI devices. |
| 1021 | * For at least a part of these bugs we need a work-around, so both |
| 1022 | * generic (drivers/pci/quirks.c) and per-architecture code can define |
| 1023 | * fixup hooks to be called for particular buggy devices. |
| 1024 | */ |
| 1025 | |
| 1026 | struct pci_fixup { |
| 1027 | u16 vendor, device; /* You can use PCI_ANY_ID here of course */ |
| 1028 | void (*hook)(struct pci_dev *dev); |
| 1029 | }; |
| 1030 | |
| 1031 | enum pci_fixup_pass { |
| 1032 | pci_fixup_early, /* Before probing BARs */ |
| 1033 | pci_fixup_header, /* After reading configuration header */ |
| 1034 | pci_fixup_final, /* Final phase of device fixups */ |
| 1035 | pci_fixup_enable, /* pci_enable_device() time */ |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1036 | pci_fixup_resume, /* pci_device_resume() */ |
| 1037 | pci_fixup_suspend, /* pci_device_suspend */ |
| 1038 | pci_fixup_resume_early, /* pci_device_resume_early() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | }; |
| 1040 | |
| 1041 | /* Anonymous variables would be nice... */ |
| 1042 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ |
Adrian Bunk | 3ff6eec | 2008-01-24 22:16:20 +0100 | [diff] [blame] | 1043 | static const struct pci_fixup __pci_fixup_##name __used \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | __attribute__((__section__(#section))) = { vendor, device, hook }; |
| 1045 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
| 1046 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
| 1047 | vendor##device##hook, vendor, device, hook) |
| 1048 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
| 1049 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
| 1050 | vendor##device##hook, vendor, device, hook) |
| 1051 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
| 1052 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
| 1053 | vendor##device##hook, vendor, device, hook) |
| 1054 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
| 1055 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
| 1056 | vendor##device##hook, vendor, device, hook) |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 1057 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
| 1058 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
| 1059 | resume##vendor##device##hook, vendor, device, hook) |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1060 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
| 1061 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
| 1062 | resume_early##vendor##device##hook, vendor, device, hook) |
| 1063 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
| 1064 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
| 1065 | suspend##vendor##device##hook, vendor, device, hook) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
| 1067 | |
| 1068 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
| 1069 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1070 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 1071 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1072 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 1073 | int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); |
Tejun Heo | 916fbfb | 2008-03-12 15:26:34 +0900 | [diff] [blame] | 1074 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, |
| 1075 | const char *name); |
Tejun Heo | ec04b07 | 2007-03-09 19:45:58 +0900 | [diff] [blame] | 1076 | void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask); |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 1077 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | extern int pci_pci_problems; |
Alan Cox | 236561e | 2006-09-30 23:27:03 -0700 | [diff] [blame] | 1079 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | #define PCIPCI_TRITON 2 |
| 1081 | #define PCIPCI_NATOMA 4 |
| 1082 | #define PCIPCI_VIAETBF 8 |
| 1083 | #define PCIPCI_VSFX 16 |
Alan Cox | 236561e | 2006-09-30 23:27:03 -0700 | [diff] [blame] | 1084 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
| 1085 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | |
Atsushi Nemoto | 4516a61 | 2007-02-05 16:36:06 -0800 | [diff] [blame] | 1087 | extern unsigned long pci_cardbus_io_size; |
| 1088 | extern unsigned long pci_cardbus_mem_size; |
| 1089 | |
Adrian Bunk | 19792a0 | 2008-05-05 21:25:47 +0300 | [diff] [blame] | 1090 | int pcibios_add_platform_entries(struct pci_dev *dev); |
| 1091 | void pcibios_disable_device(struct pci_dev *dev); |
| 1092 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
| 1093 | enum pcie_reset_state state); |
Michael Ellerman | 575e334 | 2007-05-08 12:03:07 +1000 | [diff] [blame] | 1094 | |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1095 | #ifdef CONFIG_PCI_MMCONFIG |
Yinghai Lu | bb63b42 | 2008-02-28 23:56:50 -0800 | [diff] [blame] | 1096 | extern void __init pci_mmcfg_early_init(void); |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1097 | extern void __init pci_mmcfg_late_init(void); |
| 1098 | #else |
Yinghai Lu | bb63b42 | 2008-02-28 23:56:50 -0800 | [diff] [blame] | 1099 | static inline void pci_mmcfg_early_init(void) { } |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1100 | static inline void pci_mmcfg_late_init(void) { } |
| 1101 | #endif |
| 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | #endif /* __KERNEL__ */ |
| 1104 | #endif /* LINUX_PCI_H */ |