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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #ifndef LINUX_PCI_H |
| 17 | #define LINUX_PCI_H |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
David Woodhouse | 778382e | 2006-04-29 01:46:02 +0100 | [diff] [blame] | 20 | #include <linux/mod_devicetable.h> |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/types.h> |
Sam Ravnborg | 98db6f1 | 2008-04-29 22:38:48 +0200 | [diff] [blame] | 23 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/ioport.h> |
| 25 | #include <linux/list.h> |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 26 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/errno.h> |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 28 | #include <linux/kobject.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 29 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/device.h> |
Stephen Rothwell | 1388cc9 | 2008-10-22 13:39:55 +1100 | [diff] [blame] | 31 | #include <linux/io.h> |
Jiang Liu | 14d76b6 | 2015-02-05 13:44:44 +0800 | [diff] [blame] | 32 | #include <linux/resource_ext.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 33 | #include <uapi/linux/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
Adrian Bunk | 7e7a43c | 2006-12-19 13:12:07 -0800 | [diff] [blame] | 35 | #include <linux/pci_ids.h> |
| 36 | |
Shuah Khan | 8546713 | 2013-02-27 17:06:45 -0700 | [diff] [blame] | 37 | /* |
| 38 | * The PCI interface treats multi-function devices as independent |
| 39 | * devices. The slot/function address of each device is encoded |
| 40 | * in a single byte as follows: |
| 41 | * |
| 42 | * 7:3 = slot |
| 43 | * 2:0 = function |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 44 | * |
| 45 | * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h. |
Shuah Khan | 8546713 | 2013-02-27 17:06:45 -0700 | [diff] [blame] | 46 | * In the interest of not exposing interfaces to user-space unnecessarily, |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 47 | * the following kernel-only defines are being added here. |
Shuah Khan | 8546713 | 2013-02-27 17:06:45 -0700 | [diff] [blame] | 48 | */ |
Megan Kamiya | 63ddc0b | 2014-09-05 20:19:10 -0700 | [diff] [blame] | 49 | #define PCI_DEVID(bus, devfn) ((((u16)(bus)) << 8) | (devfn)) |
Shuah Khan | 8546713 | 2013-02-27 17:06:45 -0700 | [diff] [blame] | 50 | /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ |
| 51 | #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) |
| 52 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 53 | /* pci_slot represents a physical slot */ |
| 54 | struct pci_slot { |
| 55 | struct pci_bus *bus; /* The bus this slot is on */ |
| 56 | struct list_head list; /* node in list of slots on this bus */ |
| 57 | struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ |
| 58 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ |
| 59 | struct kobject kobj; |
| 60 | }; |
| 61 | |
Alex Chiang | 0ad772e | 2008-10-20 17:41:07 -0600 | [diff] [blame] | 62 | static inline const char *pci_slot_name(const struct pci_slot *slot) |
| 63 | { |
| 64 | return kobject_name(&slot->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 | |
Yu Zhao | fde09c6 | 2008-11-22 02:39:32 +0800 | [diff] [blame] | 79 | /* |
| 80 | * For PCI devices, the region numbers are assigned this way: |
| 81 | */ |
| 82 | enum { |
| 83 | /* #0-5: standard PCI resources */ |
| 84 | PCI_STD_RESOURCES, |
| 85 | PCI_STD_RESOURCE_END = 5, |
| 86 | |
| 87 | /* #6: expansion ROM resource */ |
| 88 | PCI_ROM_RESOURCE, |
| 89 | |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 90 | /* device specific resources */ |
| 91 | #ifdef CONFIG_PCI_IOV |
| 92 | PCI_IOV_RESOURCES, |
| 93 | PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, |
| 94 | #endif |
| 95 | |
Yu Zhao | fde09c6 | 2008-11-22 02:39:32 +0800 | [diff] [blame] | 96 | /* resources assigned to buses behind the bridge */ |
| 97 | #define PCI_BRIDGE_RESOURCE_NUM 4 |
| 98 | |
| 99 | PCI_BRIDGE_RESOURCES, |
| 100 | PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + |
| 101 | PCI_BRIDGE_RESOURCE_NUM - 1, |
| 102 | |
| 103 | /* total resources associated with a PCI device */ |
| 104 | PCI_NUM_RESOURCES, |
| 105 | |
| 106 | /* preserve this for compatibility */ |
Yinghai Lu | cda57bf | 2012-01-04 15:49:45 -0800 | [diff] [blame] | 107 | DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
Yu Zhao | fde09c6 | 2008-11-22 02:39:32 +0800 | [diff] [blame] | 108 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | typedef int __bitwise pci_power_t; |
| 111 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 112 | #define PCI_D0 ((pci_power_t __force) 0) |
| 113 | #define PCI_D1 ((pci_power_t __force) 1) |
| 114 | #define PCI_D2 ((pci_power_t __force) 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | #define PCI_D3hot ((pci_power_t __force) 3) |
| 116 | #define PCI_D3cold ((pci_power_t __force) 4) |
Daniel Ritz | 3fe9d19 | 2005-08-17 15:32:19 -0700 | [diff] [blame] | 117 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
Pavel Machek | 438510f | 2005-04-16 15:25:24 -0700 | [diff] [blame] | 118 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Alan Stern | 00240c3 | 2009-04-27 13:33:16 -0400 | [diff] [blame] | 120 | /* Remember to update this when the list above changes! */ |
| 121 | extern const char *pci_power_names[]; |
| 122 | |
| 123 | static inline const char *pci_power_name(pci_power_t state) |
| 124 | { |
| 125 | return pci_power_names[1 + (int) state]; |
| 126 | } |
| 127 | |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 128 | #define PCI_PM_D2_DELAY 200 |
| 129 | #define PCI_PM_D3_WAIT 10 |
| 130 | #define PCI_PM_D3COLD_WAIT 100 |
| 131 | #define PCI_PM_BUS_WAIT 50 |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 132 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 133 | /** The pci_channel state describes connectivity between the CPU and |
| 134 | * the pci device. If some PCI bus between here and the pci device |
| 135 | * has crashed or locked up, this info is reflected here. |
| 136 | */ |
| 137 | typedef unsigned int __bitwise pci_channel_state_t; |
| 138 | |
| 139 | enum pci_channel_state { |
| 140 | /* I/O channel is in normal state */ |
| 141 | pci_channel_io_normal = (__force pci_channel_state_t) 1, |
| 142 | |
| 143 | /* I/O to channel is blocked */ |
| 144 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, |
| 145 | |
| 146 | /* PCI card is dead */ |
| 147 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, |
| 148 | }; |
| 149 | |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 150 | typedef unsigned int __bitwise pcie_reset_state_t; |
| 151 | |
| 152 | enum pcie_reset_state { |
| 153 | /* Reset is NOT asserted (Use to deassert reset) */ |
| 154 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, |
| 155 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 156 | /* Use #PERST to reset PCIe device */ |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 157 | pcie_warm_reset = (__force pcie_reset_state_t) 2, |
| 158 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 159 | /* Use PCIe Hot Reset to reset device */ |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 160 | pcie_hot_reset = (__force pcie_reset_state_t) 3 |
| 161 | }; |
| 162 | |
David Miller | ba698ad | 2007-10-25 01:16:30 -0700 | [diff] [blame] | 163 | typedef unsigned short __bitwise pci_dev_flags_t; |
| 164 | enum pci_dev_flags { |
| 165 | /* INTX_DISABLE in PCI_COMMAND register disables MSI |
| 166 | * generation too. |
| 167 | */ |
Alex Williamson | 6b12159 | 2014-05-22 17:07:36 -0600 | [diff] [blame] | 168 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) (1 << 0), |
Alan Cox | 979b179 | 2008-07-24 17:18:38 +0100 | [diff] [blame] | 169 | /* Device configuration is irrevocably lost if disabled into D3 */ |
Alex Williamson | 6b12159 | 2014-05-22 17:07:36 -0600 | [diff] [blame] | 170 | PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) (1 << 1), |
Greg Rose | 6777829 | 2011-07-22 05:46:07 +0000 | [diff] [blame] | 171 | /* Provide indication device is assigned by a Virtual Machine Manager */ |
Alex Williamson | 6b12159 | 2014-05-22 17:07:36 -0600 | [diff] [blame] | 172 | PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) (1 << 2), |
Alex Williamson | 5757a76 | 2014-02-03 14:27:39 -0700 | [diff] [blame] | 173 | /* Flag for quirk use to store if quirk-specific ACS is enabled */ |
Alex Williamson | 6b12159 | 2014-05-22 17:07:36 -0600 | [diff] [blame] | 174 | PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) (1 << 3), |
Alex Williamson | 31c2b81 | 2014-05-22 17:07:43 -0600 | [diff] [blame] | 175 | /* Flag to indicate the device uses dma_alias_devfn */ |
| 176 | PCI_DEV_FLAGS_DMA_ALIAS_DEVFN = (__force pci_dev_flags_t) (1 << 4), |
Alex Williamson | c8fe16e | 2014-05-28 14:57:02 -0600 | [diff] [blame] | 177 | /* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */ |
| 178 | PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5), |
Alex Williamson | f331a85 | 2015-01-15 18:16:04 -0600 | [diff] [blame] | 179 | /* Do not use bus resets for device */ |
| 180 | PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6), |
Alex Williamson | 51e5373 | 2014-11-21 11:24:08 -0700 | [diff] [blame] | 181 | /* Do not use PM reset even if device advertises NoSoftRst- */ |
| 182 | PCI_DEV_FLAGS_NO_PM_RESET = (__force pci_dev_flags_t) (1 << 7), |
David Miller | ba698ad | 2007-10-25 01:16:30 -0700 | [diff] [blame] | 183 | }; |
| 184 | |
Stefan Assmann | e1d3a90 | 2008-06-11 16:35:17 +0200 | [diff] [blame] | 185 | enum pci_irq_reroute_variant { |
| 186 | INTEL_IRQ_REROUTE_VARIANT = 1, |
| 187 | MAX_IRQ_REROUTE_VARIANTS = 3 |
| 188 | }; |
| 189 | |
Michael S. Tsirkin | 6e325a6 | 2006-02-14 18:52:22 +0200 | [diff] [blame] | 190 | typedef unsigned short __bitwise pci_bus_flags_t; |
| 191 | enum pci_bus_flags { |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 192 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
| 193 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, |
Michael S. Tsirkin | 6e325a6 | 2006-02-14 18:52:22 +0200 | [diff] [blame] | 194 | }; |
| 195 | |
Jacob Keller | 59da381 | 2013-07-31 06:53:21 +0000 | [diff] [blame] | 196 | /* These values come from the PCI Express Spec */ |
| 197 | enum pcie_link_width { |
| 198 | PCIE_LNK_WIDTH_RESRV = 0x00, |
| 199 | PCIE_LNK_X1 = 0x01, |
| 200 | PCIE_LNK_X2 = 0x02, |
| 201 | PCIE_LNK_X4 = 0x04, |
| 202 | PCIE_LNK_X8 = 0x08, |
| 203 | PCIE_LNK_X12 = 0x0C, |
| 204 | PCIE_LNK_X16 = 0x10, |
| 205 | PCIE_LNK_X32 = 0x20, |
| 206 | PCIE_LNK_WIDTH_UNKNOWN = 0xFF, |
| 207 | }; |
| 208 | |
Matthew Wilcox | 536c8cb | 2009-12-13 08:11:31 -0500 | [diff] [blame] | 209 | /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
| 210 | enum pci_bus_speed { |
| 211 | PCI_SPEED_33MHz = 0x00, |
| 212 | PCI_SPEED_66MHz = 0x01, |
| 213 | PCI_SPEED_66MHz_PCIX = 0x02, |
| 214 | PCI_SPEED_100MHz_PCIX = 0x03, |
| 215 | PCI_SPEED_133MHz_PCIX = 0x04, |
| 216 | PCI_SPEED_66MHz_PCIX_ECC = 0x05, |
| 217 | PCI_SPEED_100MHz_PCIX_ECC = 0x06, |
| 218 | PCI_SPEED_133MHz_PCIX_ECC = 0x07, |
| 219 | PCI_SPEED_66MHz_PCIX_266 = 0x09, |
| 220 | PCI_SPEED_100MHz_PCIX_266 = 0x0a, |
| 221 | PCI_SPEED_133MHz_PCIX_266 = 0x0b, |
Matthew Wilcox | 45b4cdd5 | 2009-12-13 08:11:34 -0500 | [diff] [blame] | 222 | AGP_UNKNOWN = 0x0c, |
| 223 | AGP_1X = 0x0d, |
| 224 | AGP_2X = 0x0e, |
| 225 | AGP_4X = 0x0f, |
| 226 | AGP_8X = 0x10, |
Matthew Wilcox | 536c8cb | 2009-12-13 08:11:31 -0500 | [diff] [blame] | 227 | PCI_SPEED_66MHz_PCIX_533 = 0x11, |
| 228 | PCI_SPEED_100MHz_PCIX_533 = 0x12, |
| 229 | PCI_SPEED_133MHz_PCIX_533 = 0x13, |
| 230 | PCIE_SPEED_2_5GT = 0x14, |
| 231 | PCIE_SPEED_5_0GT = 0x15, |
Matthew Wilcox | 9dfd97f | 2009-12-13 08:11:35 -0500 | [diff] [blame] | 232 | PCIE_SPEED_8_0GT = 0x16, |
Matthew Wilcox | 536c8cb | 2009-12-13 08:11:31 -0500 | [diff] [blame] | 233 | PCI_SPEED_UNKNOWN = 0xff, |
| 234 | }; |
| 235 | |
Alex Williamson | 24a4742f | 2011-05-10 10:02:11 -0600 | [diff] [blame] | 236 | struct pci_cap_saved_data { |
Alex Williamson | fd0f7f7 | 2013-12-17 16:43:45 -0700 | [diff] [blame] | 237 | u16 cap_nr; |
| 238 | bool cap_extended; |
Alex Williamson | 24a4742f | 2011-05-10 10:02:11 -0600 | [diff] [blame] | 239 | unsigned int size; |
| 240 | u32 data[0]; |
| 241 | }; |
| 242 | |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 243 | struct pci_cap_saved_state { |
| 244 | struct hlist_node next; |
Alex Williamson | 24a4742f | 2011-05-10 10:02:11 -0600 | [diff] [blame] | 245 | struct pci_cap_saved_data cap; |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 246 | }; |
| 247 | |
Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 248 | struct pcie_link_state; |
Jesse Barnes | ee69439c | 2008-04-28 12:30:35 -0700 | [diff] [blame] | 249 | struct pci_vpd; |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 250 | struct pci_sriov; |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 251 | struct pci_ats; |
Jesse Barnes | ee69439c | 2008-04-28 12:30:35 -0700 | [diff] [blame] | 252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | /* |
| 254 | * The pci_dev structure is used to describe PCI devices. |
| 255 | */ |
| 256 | struct pci_dev { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | struct list_head bus_list; /* node in per-bus list */ |
| 258 | struct pci_bus *bus; /* bus this device is on */ |
| 259 | struct pci_bus *subordinate; /* bus this device bridges to */ |
| 260 | |
| 261 | void *sysdata; /* hook for sys-specific extension */ |
| 262 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 263 | struct pci_slot *slot; /* Physical slot this device is in */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | unsigned int devfn; /* encoded device & function index */ |
| 266 | unsigned short vendor; |
| 267 | unsigned short device; |
| 268 | unsigned short subsystem_vendor; |
| 269 | unsigned short subsystem_device; |
| 270 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
Auke Kok | b8a3a52 | 2007-06-08 15:46:30 -0700 | [diff] [blame] | 271 | u8 revision; /* PCI revision, low byte of class word */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 273 | u8 pcie_cap; /* PCIe capability offset */ |
Gavin Shan | e375b56 | 2013-04-04 16:54:30 +0000 | [diff] [blame] | 274 | u8 msi_cap; /* MSI capability offset */ |
| 275 | u8 msix_cap; /* MSI-X capability offset */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 276 | u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | u8 rom_base_reg; /* which config register controls the ROM */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 278 | u8 pin; /* which interrupt pin this device uses */ |
| 279 | u16 pcie_flags_reg; /* cached PCIe Capabilities Register */ |
Alex Williamson | 31c2b81 | 2014-05-22 17:07:43 -0600 | [diff] [blame] | 280 | u8 dma_alias_devfn;/* devfn of DMA alias, if any */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
| 282 | struct pci_driver *driver; /* which driver has allocated this device */ |
| 283 | u64 dma_mask; /* Mask of the bits of bus address this |
| 284 | device implements. Normally this is |
| 285 | 0xffffffff. You only need to change |
| 286 | this if your device has broken DMA |
| 287 | or supports 64-bit transfers. */ |
| 288 | |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 289 | struct device_dma_parameters dma_parms; |
| 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
| 292 | this is D0-D3, D0 being fully functional, |
| 293 | and D3 being off. */ |
Bjorn Helgaas | 703860e | 2013-04-17 16:57:56 -0600 | [diff] [blame] | 294 | u8 pm_cap; /* PM capability offset */ |
Rafael J. Wysocki | 337001b | 2008-07-07 03:36:24 +0200 | [diff] [blame] | 295 | unsigned int pme_support:5; /* Bitmask of states from which PME# |
| 296 | can be generated */ |
Rafael J. Wysocki | c7f4865 | 2010-02-17 23:39:08 +0100 | [diff] [blame] | 297 | unsigned int pme_interrupt:1; |
Rafael J. Wysocki | 379021d | 2011-10-03 23:16:33 +0200 | [diff] [blame] | 298 | unsigned int pme_poll:1; /* Poll device's PME status bit */ |
Rafael J. Wysocki | 337001b | 2008-07-07 03:36:24 +0200 | [diff] [blame] | 299 | unsigned int d1_support:1; /* Low power state D1 is supported */ |
| 300 | unsigned int d2_support:1; /* Low power state D2 is supported */ |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 301 | unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
| 302 | unsigned int no_d3cold:1; /* D3cold is forbidden */ |
| 303 | unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ |
Jacob Pan | 253d2e5 | 2010-07-16 10:19:22 -0700 | [diff] [blame] | 304 | unsigned int mmio_always_on:1; /* disallow turning off io/mem |
| 305 | decoding during bar sizing */ |
Rafael J. Wysocki | e80bb09 | 2009-09-08 23:14:49 +0200 | [diff] [blame] | 306 | unsigned int wakeup_prepared:1; |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 307 | unsigned int runtime_d3cold:1; /* whether go through runtime |
| 308 | D3cold, not set for devices |
| 309 | powered on/off by the |
| 310 | corresponding bridge */ |
Bjorn Helgaas | b440bde | 2014-09-10 13:45:01 -0600 | [diff] [blame] | 311 | unsigned int ignore_hotplug:1; /* Ignore hotplug events */ |
Rafael J. Wysocki | 1ae861e | 2009-12-31 12:15:54 +0100 | [diff] [blame] | 312 | unsigned int d3_delay; /* D3->D0 transition time in ms */ |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 313 | unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 315 | #ifdef CONFIG_PCIEASPM |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 316 | struct pcie_link_state *link_state; /* ASPM link state */ |
Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 317 | #endif |
| 318 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 319 | pci_channel_state_t error_state; /* current connectivity state */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | struct device dev; /* Generic device interface */ |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | int cfg_size; /* Size of configuration space */ |
| 323 | |
| 324 | /* |
| 325 | * Instead of touching interrupt line and base address registers |
| 326 | * directly, use the values stored here. They might be different! |
| 327 | */ |
| 328 | unsigned int irq; |
| 329 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
| 330 | |
Yinghai Lu | 58d9a38 | 2013-01-21 13:20:51 -0800 | [diff] [blame] | 331 | bool match_driver; /* Skip attaching driver */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | /* These fields are used by common fixups */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 333 | unsigned int transparent:1; /* Subtractive decode PCI bridge */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | unsigned int multifunction:1;/* Part of multi-function device */ |
| 335 | /* keep track of device state */ |
Greg Kroah-Hartman | 8a1bc90 | 2008-02-14 14:56:56 -0800 | [diff] [blame] | 336 | unsigned int is_added:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | unsigned int is_busmaster:1; /* device is busmaster */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 338 | unsigned int no_msi:1; /* device may not use msi */ |
Benjamin Herrenschmidt | f144d14 | 2014-10-03 15:13:24 +1000 | [diff] [blame] | 339 | unsigned int no_64bit_msi:1; /* device may only use 32-bit MSIs */ |
Jan Kiszka | fb51ccb | 2011-11-04 09:45:59 +0100 | [diff] [blame] | 340 | unsigned int block_cfg_access:1; /* config space access is blocked */ |
Doug Thompson | bd8481e | 2006-05-08 17:06:09 -0700 | [diff] [blame] | 341 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
Stefan Assmann | e1d3a90 | 2008-06-11 16:35:17 +0200 | [diff] [blame] | 342 | unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 343 | unsigned int msi_enabled:1; |
Shaohua Li | 99dc804 | 2006-05-26 10:58:27 +0800 | [diff] [blame] | 344 | unsigned int msix_enabled:1; |
Yu Zhao | 58c3a72 | 2008-10-14 14:02:53 +0800 | [diff] [blame] | 345 | unsigned int ari_enabled:1; /* ARI forwarding */ |
Tejun Heo | 9ac7849 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 346 | unsigned int is_managed:1; |
Mike Mason | 260d703 | 2009-07-30 15:33:21 -0700 | [diff] [blame] | 347 | unsigned int needs_freset:1; /* Dev requires fundamental reset */ |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 348 | unsigned int state_saved:1; |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 349 | unsigned int is_physfn:1; |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 350 | unsigned int is_virtfn:1; |
Michael S. Tsirkin | 711d577 | 2009-07-27 23:37:48 +0300 | [diff] [blame] | 351 | unsigned int reset_fn:1; |
Eric W. Biederman | 2876048 | 2009-09-09 14:09:24 -0700 | [diff] [blame] | 352 | unsigned int is_hotplug_bridge:1; |
Huang Ying | affb72c | 2010-05-18 14:35:16 +0800 | [diff] [blame] | 353 | unsigned int __aer_firmware_first_valid:1; |
| 354 | unsigned int __aer_firmware_first:1; |
Bjorn Helgaas | fbebb9f | 2012-06-16 14:40:22 -0600 | [diff] [blame] | 355 | unsigned int broken_intx_masking:1; |
Bjorn Helgaas | 2b28ae1 | 2012-07-09 13:38:57 -0600 | [diff] [blame] | 356 | unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */ |
Jiang Liu | cffe0a2 | 2014-10-27 13:21:42 +0800 | [diff] [blame] | 357 | unsigned int irq_managed:1; |
Yijing Wang | d0751b9 | 2015-05-21 15:05:02 +0800 | [diff] [blame] | 358 | unsigned int has_secondary_link:1; |
David Miller | ba698ad | 2007-10-25 01:16:30 -0700 | [diff] [blame] | 359 | pci_dev_flags_t dev_flags; |
Inaky Perez-Gonzalez | bae94d0 | 2006-11-22 12:40:31 -0800 | [diff] [blame] | 360 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 363 | struct hlist_head saved_cap_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
| 365 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ |
| 366 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
venkatesh.pallipadi@intel.com | 45aec1ae | 2008-03-18 17:00:22 -0700 | [diff] [blame] | 367 | struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
Eric W. Biederman | ded86d8 | 2007-01-28 12:42:52 -0700 | [diff] [blame] | 368 | #ifdef CONFIG_PCI_MSI |
Michael Ellerman | 4aa9bc9 | 2007-04-05 17:19:10 +1000 | [diff] [blame] | 369 | struct list_head msi_list; |
Greg Kroah-Hartman | 1c51b50 | 2013-12-19 12:30:17 -0800 | [diff] [blame] | 370 | const struct attribute_group **msi_irq_groups; |
Eric W. Biederman | ded86d8 | 2007-01-28 12:42:52 -0700 | [diff] [blame] | 371 | #endif |
Ben Hutchings | 94e6108 | 2008-03-05 16:52:39 +0000 | [diff] [blame] | 372 | struct pci_vpd *vpd; |
Joerg Roedel | 466b3dd | 2011-10-30 16:35:08 +0100 | [diff] [blame] | 373 | #ifdef CONFIG_PCI_ATS |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 374 | union { |
| 375 | struct pci_sriov *sriov; /* SR-IOV capability related */ |
| 376 | struct pci_dev *physfn; /* the PF this VF is associated with */ |
| 377 | }; |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 378 | struct pci_ats *ats; /* Address Translation Service */ |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 379 | #endif |
Bjorn Helgaas | dbd3fc3 | 2012-12-10 11:24:42 -0700 | [diff] [blame] | 380 | phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ |
Matthew Garrett | 84c1b80 | 2012-12-05 14:33:27 -0700 | [diff] [blame] | 381 | size_t romlen; /* Length of ROM if it's not from the BAR */ |
Alex Williamson | 782a985 | 2014-05-20 08:53:21 -0600 | [diff] [blame] | 382 | char *driver_override; /* Driver name to force a match */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | }; |
| 384 | |
Yinghai | dda5654 | 2010-04-09 01:07:55 +0100 | [diff] [blame] | 385 | static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
| 386 | { |
| 387 | #ifdef CONFIG_PCI_IOV |
| 388 | if (dev->is_virtfn) |
| 389 | dev = dev->physfn; |
| 390 | #endif |
Yinghai | dda5654 | 2010-04-09 01:07:55 +0100 | [diff] [blame] | 391 | return dev; |
| 392 | } |
| 393 | |
Gu Zheng | 3c6e6ae | 2013-05-25 21:48:30 +0800 | [diff] [blame] | 394 | struct pci_dev *pci_alloc_dev(struct pci_bus *bus); |
Michael Ellerman | 6589121 | 2007-04-05 17:19:08 +1000 | [diff] [blame] | 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
| 397 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
| 398 | |
Linas Vepstas | a7369f1 | 2006-12-12 16:55:59 -0600 | [diff] [blame] | 399 | static inline int pci_channel_offline(struct pci_dev *pdev) |
| 400 | { |
| 401 | return (pdev->error_state != pci_channel_io_normal); |
| 402 | } |
| 403 | |
Bjorn Helgaas | 5a21d70 | 2012-02-23 20:18:59 -0700 | [diff] [blame] | 404 | struct pci_host_bridge { |
Yinghai Lu | 7b54366 | 2012-04-02 18:31:53 -0700 | [diff] [blame] | 405 | struct device dev; |
Bjorn Helgaas | 5a21d70 | 2012-02-23 20:18:59 -0700 | [diff] [blame] | 406 | struct pci_bus *bus; /* root bus */ |
Jiang Liu | 14d76b6 | 2015-02-05 13:44:44 +0800 | [diff] [blame] | 407 | struct list_head windows; /* resource_entry */ |
Yinghai Lu | 4fa2649 | 2012-04-02 18:31:53 -0700 | [diff] [blame] | 408 | void (*release_fn)(struct pci_host_bridge *); |
| 409 | void *release_data; |
Aaron Lu | e33caa8 | 2015-03-25 14:37:06 +0800 | [diff] [blame] | 410 | unsigned int ignore_reset_delay:1; /* for entire hierarchy */ |
Bjorn Helgaas | 5a21d70 | 2012-02-23 20:18:59 -0700 | [diff] [blame] | 411 | }; |
Shaohua Li | 41017f0 | 2006-02-08 17:11:38 +0800 | [diff] [blame] | 412 | |
Yinghai Lu | 7b54366 | 2012-04-02 18:31:53 -0700 | [diff] [blame] | 413 | #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
Yinghai Lu | 4fa2649 | 2012-04-02 18:31:53 -0700 | [diff] [blame] | 414 | void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
| 415 | void (*release_fn)(struct pci_host_bridge *), |
| 416 | void *release_data); |
Yinghai Lu | 7b54366 | 2012-04-02 18:31:53 -0700 | [diff] [blame] | 417 | |
Rafael J. Wysocki | 6c0cc95 | 2013-01-09 22:33:37 +0100 | [diff] [blame] | 418 | int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
| 419 | |
Bjorn Helgaas | 2fe2abf | 2010-02-23 10:24:36 -0700 | [diff] [blame] | 420 | /* |
| 421 | * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond |
| 422 | * to P2P or CardBus bridge windows) go in a table. Additional ones (for |
| 423 | * buses below host bridges or subtractive decode bridges) go in the list. |
| 424 | * Use pci_bus_for_each_resource() to iterate through all the resources. |
| 425 | */ |
| 426 | |
| 427 | /* |
| 428 | * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly |
| 429 | * and there's no way to program the bridge with the details of the window. |
| 430 | * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- |
| 431 | * decode bit set, because they are explicit and can be programmed with _SRS. |
| 432 | */ |
| 433 | #define PCI_SUBTRACTIVE_DECODE 0x1 |
| 434 | |
| 435 | struct pci_bus_resource { |
| 436 | struct list_head list; |
| 437 | struct resource *res; |
| 438 | unsigned int flags; |
| 439 | }; |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 440 | |
| 441 | #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] | 442 | |
| 443 | struct pci_bus { |
| 444 | struct list_head node; /* node in list of buses */ |
| 445 | struct pci_bus *parent; /* parent bus this bridge is on */ |
| 446 | struct list_head children; /* list of child buses */ |
| 447 | struct list_head devices; /* list of devices on this bus */ |
| 448 | struct pci_dev *self; /* bridge device as seen by parent */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 449 | struct list_head slots; /* list of slots on this bus */ |
Bjorn Helgaas | 2fe2abf | 2010-02-23 10:24:36 -0700 | [diff] [blame] | 450 | struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
| 451 | struct list_head resources; /* address space routed to this bus */ |
Yinghai Lu | 92f0243 | 2012-05-17 18:51:11 -0700 | [diff] [blame] | 452 | struct resource busn_res; /* bus numbers routed to this bus */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | struct pci_ops *ops; /* configuration access functions */ |
Yijing Wang | c2791b8 | 2014-11-11 17:45:45 -0700 | [diff] [blame] | 455 | struct msi_controller *msi; /* MSI controller */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | void *sysdata; /* hook for sys-specific extension */ |
| 457 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ |
| 458 | |
| 459 | unsigned char number; /* bus number */ |
| 460 | unsigned char primary; /* number of primary bridge */ |
Matthew Wilcox | 3749c51 | 2009-12-13 08:11:32 -0500 | [diff] [blame] | 461 | unsigned char max_bus_speed; /* enum pci_bus_speed */ |
| 462 | unsigned char cur_bus_speed; /* enum pci_bus_speed */ |
Catalin Marinas | 670ba0c | 2014-09-29 15:29:26 +0100 | [diff] [blame] | 463 | #ifdef CONFIG_PCI_DOMAINS_GENERIC |
| 464 | int domain_nr; |
| 465 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
| 467 | char name[48]; |
| 468 | |
| 469 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 470 | pci_bus_flags_t bus_flags; /* inherited by child buses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | struct device *bridge; |
Greg Kroah-Hartman | fd7d1ce | 2007-05-22 22:47:54 -0400 | [diff] [blame] | 472 | struct device dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
| 474 | struct bin_attribute *legacy_mem; /* legacy mem */ |
Greg Kroah-Hartman | cc74d96 | 2008-03-12 21:48:03 -0700 | [diff] [blame] | 475 | unsigned int is_added:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | }; |
| 477 | |
Greg Kroah-Hartman | fd7d1ce | 2007-05-22 22:47:54 -0400 | [diff] [blame] | 478 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Kenji Kaneshige | 79af72d | 2009-03-20 14:55:55 -0600 | [diff] [blame] | 480 | /* |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 481 | * Returns true if the PCI bus is root (behind host-PCI bridge), |
Kenji Kaneshige | 79af72d | 2009-03-20 14:55:55 -0600 | [diff] [blame] | 482 | * false otherwise |
Bjorn Helgaas | 77a0dfc | 2013-09-24 15:14:57 -0600 | [diff] [blame] | 483 | * |
| 484 | * Some code assumes that "bus->self == NULL" means that bus is a root bus. |
| 485 | * This is incorrect because "virtual" buses added for SR-IOV (via |
| 486 | * virtfn_add_bus()) have "bus->self == NULL" but are not root buses. |
Kenji Kaneshige | 79af72d | 2009-03-20 14:55:55 -0600 | [diff] [blame] | 487 | */ |
| 488 | static inline bool pci_is_root_bus(struct pci_bus *pbus) |
| 489 | { |
| 490 | return !(pbus->parent); |
| 491 | } |
| 492 | |
Yijing Wang | 1c86438 | 2014-05-04 12:23:37 +0800 | [diff] [blame] | 493 | /** |
| 494 | * pci_is_bridge - check if the PCI device is a bridge |
| 495 | * @dev: PCI device |
| 496 | * |
| 497 | * Return true if the PCI device is bridge whether it has subordinate |
| 498 | * or not. |
| 499 | */ |
| 500 | static inline bool pci_is_bridge(struct pci_dev *dev) |
| 501 | { |
| 502 | return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || |
| 503 | dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; |
| 504 | } |
| 505 | |
Bjorn Helgaas | c6bde21 | 2013-11-06 10:11:48 -0700 | [diff] [blame] | 506 | static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) |
| 507 | { |
| 508 | dev = pci_physfn(dev); |
| 509 | if (pci_is_root_bus(dev->bus)) |
| 510 | return NULL; |
| 511 | |
| 512 | return dev->bus->self; |
| 513 | } |
| 514 | |
Murali Karicheri | 6675a60 | 2015-03-03 12:52:11 -0500 | [diff] [blame] | 515 | struct device *pci_get_host_bridge_device(struct pci_dev *dev); |
| 516 | void pci_put_host_bridge_device(struct device *dev); |
| 517 | |
Rafael J. Wysocki | 16cf0eb | 2009-01-05 14:50:27 +0100 | [diff] [blame] | 518 | #ifdef CONFIG_PCI_MSI |
| 519 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) |
| 520 | { |
| 521 | return pci_dev->msi_enabled || pci_dev->msix_enabled; |
| 522 | } |
| 523 | #else |
| 524 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } |
| 525 | #endif |
| 526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | /* |
| 528 | * Error values that may be returned by PCI functions. |
| 529 | */ |
| 530 | #define PCIBIOS_SUCCESSFUL 0x00 |
| 531 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
| 532 | #define PCIBIOS_BAD_VENDOR_ID 0x83 |
| 533 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
| 534 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
| 535 | #define PCIBIOS_SET_FAILED 0x88 |
| 536 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
| 537 | |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 538 | /* |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 539 | * Translate above to generic errno for passing back through non-PCI code. |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 540 | */ |
| 541 | static inline int pcibios_err_to_errno(int err) |
| 542 | { |
| 543 | if (err <= PCIBIOS_SUCCESSFUL) |
| 544 | return err; /* Assume already errno */ |
| 545 | |
| 546 | switch (err) { |
| 547 | case PCIBIOS_FUNC_NOT_SUPPORTED: |
| 548 | return -ENOENT; |
| 549 | case PCIBIOS_BAD_VENDOR_ID: |
Gavin Shan | d97ffe2 | 2014-05-21 15:23:30 +1000 | [diff] [blame] | 550 | return -ENOTTY; |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 551 | case PCIBIOS_DEVICE_NOT_FOUND: |
| 552 | return -ENODEV; |
| 553 | case PCIBIOS_BAD_REGISTER_NUMBER: |
| 554 | return -EFAULT; |
| 555 | case PCIBIOS_SET_FAILED: |
| 556 | return -EIO; |
| 557 | case PCIBIOS_BUFFER_TOO_SMALL: |
| 558 | return -ENOSPC; |
| 559 | } |
| 560 | |
Gavin Shan | d97ffe2 | 2014-05-21 15:23:30 +1000 | [diff] [blame] | 561 | return -ERANGE; |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 562 | } |
| 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | /* Low-level architecture-dependent routines */ |
| 565 | |
| 566 | struct pci_ops { |
Rob Herring | 1f94a94 | 2015-01-09 20:34:39 -0600 | [diff] [blame] | 567 | void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
| 569 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
| 570 | }; |
| 571 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 572 | /* |
| 573 | * ACPI needs to be able to access PCI config space before we've done a |
| 574 | * PCI bus scan and created pci_bus structures. |
| 575 | */ |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 576 | int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, |
| 577 | int reg, int len, u32 *val); |
| 578 | int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, |
| 579 | int reg, int len, u32 val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
Yinghai Lu | 3a9ad0b | 2015-05-27 17:23:51 -0700 | [diff] [blame] | 581 | #ifdef CONFIG_PCI_BUS_ADDR_T_64BIT |
| 582 | typedef u64 pci_bus_addr_t; |
| 583 | #else |
| 584 | typedef u32 pci_bus_addr_t; |
| 585 | #endif |
| 586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | struct pci_bus_region { |
Yinghai Lu | 3a9ad0b | 2015-05-27 17:23:51 -0700 | [diff] [blame] | 588 | pci_bus_addr_t start; |
| 589 | pci_bus_addr_t end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | }; |
| 591 | |
| 592 | struct pci_dynids { |
| 593 | spinlock_t lock; /* protects list, index */ |
| 594 | struct list_head list; /* for IDs added at runtime */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | }; |
| 596 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 597 | |
| 598 | /* |
| 599 | * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides |
| 600 | * a set of callbacks in struct pci_error_handlers, that device driver |
| 601 | * will be notified of PCI bus errors, and will be driven to recovery |
| 602 | * when an error occurs. |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 603 | */ |
| 604 | |
| 605 | typedef unsigned int __bitwise pci_ers_result_t; |
| 606 | |
| 607 | enum pci_ers_result { |
| 608 | /* no result/none/not supported in device driver */ |
| 609 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, |
| 610 | |
| 611 | /* Device driver can recover without slot reset */ |
| 612 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, |
| 613 | |
| 614 | /* Device driver wants slot to be reset. */ |
| 615 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, |
| 616 | |
| 617 | /* Device has completely failed, is unrecoverable */ |
| 618 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, |
| 619 | |
| 620 | /* Device driver is fully recovered and operational */ |
| 621 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, |
Vijay Mohan Pandarathil | 918b4053 | 2012-11-17 11:47:18 +0000 | [diff] [blame] | 622 | |
| 623 | /* No AER capabilities registered for the driver */ |
| 624 | PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 625 | }; |
| 626 | |
| 627 | /* PCI bus error event callbacks */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 628 | struct pci_error_handlers { |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 629 | /* PCI bus error detected on this device */ |
| 630 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 631 | enum pci_channel_state error); |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 632 | |
| 633 | /* MMIO has been re-enabled, but not DMA */ |
| 634 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); |
| 635 | |
| 636 | /* PCI Express link has been reset */ |
| 637 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); |
| 638 | |
| 639 | /* PCI slot has been reset */ |
| 640 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); |
| 641 | |
Keith Busch | 3ebe7f9 | 2014-05-02 10:40:42 -0600 | [diff] [blame] | 642 | /* PCI function reset prepare or completed */ |
| 643 | void (*reset_notify)(struct pci_dev *dev, bool prepare); |
| 644 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 645 | /* Device driver may resume normal operations */ |
| 646 | void (*resume)(struct pci_dev *dev); |
| 647 | }; |
| 648 | |
linas | 392a1ce | 2005-11-16 17:10:41 -0600 | [diff] [blame] | 649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | struct module; |
| 651 | struct pci_driver { |
| 652 | struct list_head node; |
Stephen Hemminger | 42b2193 | 2010-09-02 14:28:51 -0700 | [diff] [blame] | 653 | const char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
| 655 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ |
| 656 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ |
| 657 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 658 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
| 659 | int (*resume_early) (struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 661 | void (*shutdown) (struct pci_dev *dev); |
Donald Dutile | 1789382 | 2012-11-05 15:20:36 -0500 | [diff] [blame] | 662 | int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ |
Stephen Hemminger | 4945302 | 2012-09-07 09:33:14 -0700 | [diff] [blame] | 663 | const struct pci_error_handlers *err_handler; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | struct device_driver driver; |
| 665 | struct pci_dynids dynids; |
| 666 | }; |
| 667 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 668 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | |
| 670 | /** |
Andrew Morton | 9f9351b | 2008-03-10 11:43:34 -0700 | [diff] [blame] | 671 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
Jonas Bonn | 90a1ba0 | 2008-02-22 11:02:21 +0100 | [diff] [blame] | 672 | * @_table: device table name |
| 673 | * |
Joe Perches | 92e112f | 2013-12-13 11:36:22 -0700 | [diff] [blame] | 674 | * This macro is deprecated and should not be used in new code. |
Jonas Bonn | 90a1ba0 | 2008-02-22 11:02:21 +0100 | [diff] [blame] | 675 | */ |
Andrew Morton | 9f9351b | 2008-03-10 11:43:34 -0700 | [diff] [blame] | 676 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
Bill Pemberton | 15856ad | 2012-11-21 15:35:00 -0500 | [diff] [blame] | 677 | const struct pci_device_id _table[] |
Jonas Bonn | 90a1ba0 | 2008-02-22 11:02:21 +0100 | [diff] [blame] | 678 | |
| 679 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | * PCI_DEVICE - macro used to describe a specific pci device |
| 681 | * @vend: the 16 bit PCI Vendor ID |
| 682 | * @dev: the 16 bit PCI Device ID |
| 683 | * |
| 684 | * This macro is used to create a struct pci_device_id that matches a |
| 685 | * specific device. The subvendor and subdevice fields will be set to |
| 686 | * PCI_ANY_ID. |
| 687 | */ |
| 688 | #define PCI_DEVICE(vend,dev) \ |
| 689 | .vendor = (vend), .device = (dev), \ |
| 690 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 691 | |
| 692 | /** |
Nithin Nayak Sujir | 3d567e0 | 2012-11-14 14:44:26 +0000 | [diff] [blame] | 693 | * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem |
| 694 | * @vend: the 16 bit PCI Vendor ID |
| 695 | * @dev: the 16 bit PCI Device ID |
| 696 | * @subvend: the 16 bit PCI Subvendor ID |
| 697 | * @subdev: the 16 bit PCI Subdevice ID |
| 698 | * |
| 699 | * This macro is used to create a struct pci_device_id that matches a |
| 700 | * specific device with subsystem information. |
| 701 | */ |
| 702 | #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ |
| 703 | .vendor = (vend), .device = (dev), \ |
| 704 | .subvendor = (subvend), .subdevice = (subdev) |
| 705 | |
| 706 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class |
| 708 | * @dev_class: the class, subclass, prog-if triple for this device |
| 709 | * @dev_class_mask: the class mask for this device |
| 710 | * |
| 711 | * 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] | 712 | * specific PCI class. The vendor, device, subvendor, and subdevice |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | * fields will be set to PCI_ANY_ID. |
| 714 | */ |
| 715 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
| 716 | .class = (dev_class), .class_mask = (dev_class_mask), \ |
| 717 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
| 718 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 719 | |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 720 | /** |
| 721 | * PCI_VDEVICE - macro used to describe a specific pci device in short form |
Mark Rustad | c130904 | 2014-03-31 14:58:39 -0700 | [diff] [blame] | 722 | * @vend: the vendor name |
| 723 | * @dev: the 16 bit PCI Device ID |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 724 | * |
| 725 | * This macro is used to create a struct pci_device_id that matches a |
| 726 | * specific PCI device. The subvendor, and subdevice fields will be set |
| 727 | * to PCI_ANY_ID. The macro allows the next field to follow as the device |
| 728 | * private data. |
| 729 | */ |
| 730 | |
Mark Rustad | c130904 | 2014-03-31 14:58:39 -0700 | [diff] [blame] | 731 | #define PCI_VDEVICE(vend, dev) \ |
| 732 | .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ |
| 733 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | /* these external functions are only available when PCI support is enabled */ |
| 736 | #ifdef CONFIG_PCI |
| 737 | |
Bjorn Helgaas | a58674f | 2013-08-22 11:24:44 +0800 | [diff] [blame] | 738 | void pcie_bus_configure_settings(struct pci_bus *bus); |
Jon Mason | b03e749 | 2011-07-20 15:20:54 -0500 | [diff] [blame] | 739 | |
| 740 | enum pcie_bus_config_types { |
Jon Mason | 5f39e67 | 2011-10-03 09:50:20 -0500 | [diff] [blame] | 741 | PCIE_BUS_TUNE_OFF, |
Jon Mason | b03e749 | 2011-07-20 15:20:54 -0500 | [diff] [blame] | 742 | PCIE_BUS_SAFE, |
Jon Mason | 5f39e67 | 2011-10-03 09:50:20 -0500 | [diff] [blame] | 743 | PCIE_BUS_PERFORMANCE, |
Jon Mason | b03e749 | 2011-07-20 15:20:54 -0500 | [diff] [blame] | 744 | PCIE_BUS_PEER2PEER, |
| 745 | }; |
| 746 | |
| 747 | extern enum pcie_bus_config_types pcie_bus_config; |
| 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | extern struct bus_type pci_bus_type; |
| 750 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 751 | /* Do NOT directly access these two variables, unless you are arch-specific PCI |
| 752 | * code, or PCI core code. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 754 | /* Some device drivers need know if PCI is initiated */ |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 755 | int no_pci_devices(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
Yinghai Lu | 3c449ed | 2012-11-03 21:39:31 -0700 | [diff] [blame] | 757 | void pcibios_resource_survey_bus(struct pci_bus *bus); |
Jiang Liu | 10a9574 | 2013-04-12 05:44:20 +0000 | [diff] [blame] | 758 | void pcibios_add_bus(struct pci_bus *bus); |
| 759 | void pcibios_remove_bus(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | void pcibios_fixup_bus(struct pci_bus *); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 761 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 762 | /* Architecture-specific versions may override this (weak) */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 763 | char *pcibios_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
| 765 | /* Used only when drivers/pci/setup.c is used */ |
Dominik Brodowski | 3b7a17f | 2010-01-01 17:40:50 +0100 | [diff] [blame] | 766 | resource_size_t pcibios_align_resource(void *, const struct resource *, |
Dominik Brodowski | b26b2d4 | 2010-01-01 17:40:49 +0100 | [diff] [blame] | 767 | resource_size_t, |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 768 | resource_size_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | void pcibios_update_irq(struct pci_dev *, int irq); |
| 770 | |
Benjamin Herrenschmidt | 2d1c861 | 2009-12-09 17:52:13 +1100 | [diff] [blame] | 771 | /* Weak but can be overriden by arch */ |
| 772 | void pci_fixup_cardbus(struct pci_bus *); |
| 773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | /* Generic PCI functions used internally */ |
| 775 | |
Yinghai Lu | fc27985 | 2013-12-09 22:54:40 -0800 | [diff] [blame] | 776 | void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, |
Bjorn Helgaas | 36a66cd | 2012-02-23 20:19:00 -0700 | [diff] [blame] | 777 | struct resource *res); |
Yinghai Lu | fc27985 | 2013-12-09 22:54:40 -0800 | [diff] [blame] | 778 | void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, |
Bjorn Helgaas | 36a66cd | 2012-02-23 20:19:00 -0700 | [diff] [blame] | 779 | struct pci_bus_region *region); |
Mauro Carvalho Chehab | d1fd4fb | 2009-07-10 18:39:53 -0300 | [diff] [blame] | 780 | void pcibios_scan_specific_bus(int busn); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 781 | struct pci_bus *pci_find_bus(int domain, int busnr); |
akpm@linux-foundation.org | c48f167 | 2009-02-03 15:45:26 -0800 | [diff] [blame] | 782 | void pci_bus_add_devices(const struct pci_bus *bus); |
Bjorn Helgaas | de4b2f7 | 2011-10-28 16:25:55 -0600 | [diff] [blame] | 783 | struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
Bjorn Helgaas | 166c637 | 2011-10-28 16:25:45 -0600 | [diff] [blame] | 784 | struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
| 785 | struct pci_ops *ops, void *sysdata, |
| 786 | struct list_head *resources); |
Yinghai Lu | 98a3583 | 2012-05-18 11:35:50 -0600 | [diff] [blame] | 787 | int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
| 788 | int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); |
| 789 | void pci_bus_release_busn_res(struct pci_bus *b); |
Bill Pemberton | 15856ad | 2012-11-21 15:35:00 -0500 | [diff] [blame] | 790 | struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
Bjorn Helgaas | a2ebb82 | 2011-10-28 16:25:50 -0600 | [diff] [blame] | 791 | struct pci_ops *ops, void *sysdata, |
| 792 | struct list_head *resources); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 793 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
| 794 | int busnr); |
Matthew Wilcox | 3749c51 | 2009-12-13 08:11:32 -0500 | [diff] [blame] | 795 | void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 796 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
Alex Chiang | 828f376 | 2008-10-20 17:40:52 -0600 | [diff] [blame] | 797 | const char *name, |
| 798 | struct hotplug_slot *hotplug); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 799 | void pci_destroy_slot(struct pci_slot *slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 801 | 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] | 802 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
Yijing Wang | c893d13 | 2014-05-30 11:01:03 +0800 | [diff] [blame] | 804 | void pci_bus_add_device(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | void pci_read_bridge_bases(struct pci_bus *child); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 806 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
| 807 | struct resource *res); |
John Crispin | 3df425f | 2012-04-12 17:33:07 +0200 | [diff] [blame] | 808 | u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
Bjorn Helgaas | 68feac8 | 2008-12-16 21:36:55 -0700 | [diff] [blame] | 810 | u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 811 | struct pci_dev *pci_dev_get(struct pci_dev *dev); |
| 812 | void pci_dev_put(struct pci_dev *dev); |
| 813 | void pci_remove_bus(struct pci_bus *b); |
| 814 | void pci_stop_and_remove_bus_device(struct pci_dev *dev); |
Rafael J. Wysocki | 9d16947 | 2014-01-10 15:22:18 +0100 | [diff] [blame] | 815 | void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); |
Yinghai Lu | cdfcc57 | 2012-10-30 14:31:38 -0600 | [diff] [blame] | 816 | void pci_stop_root_bus(struct pci_bus *bus); |
| 817 | void pci_remove_root_bus(struct pci_bus *bus); |
Dominik Brodowski | b3743fa | 2005-09-09 13:03:23 -0700 | [diff] [blame] | 818 | void pci_setup_cardbus(struct pci_bus *bus); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 819 | void pci_sort_breadthfirst(void); |
Williams, Mitch A | fb8a0d9 | 2010-02-10 01:43:04 +0000 | [diff] [blame] | 820 | #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
| 821 | #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) |
| 822 | #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
| 824 | /* Generic PCI functions exported to card drivers */ |
| 825 | |
James Bottomley | 388c8c1 | 2008-08-03 13:02:12 -0500 | [diff] [blame] | 826 | enum pci_lost_interrupt_reason { |
| 827 | PCI_LOST_IRQ_NO_INFORMATION = 0, |
| 828 | PCI_LOST_IRQ_DISABLE_MSI, |
| 829 | PCI_LOST_IRQ_DISABLE_MSIX, |
| 830 | PCI_LOST_IRQ_DISABLE_ACPI, |
| 831 | }; |
| 832 | enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 833 | int pci_find_capability(struct pci_dev *dev, int cap); |
| 834 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); |
| 835 | int pci_find_ext_capability(struct pci_dev *dev, int cap); |
Bjorn Helgaas | 44a9a36 | 2012-07-13 14:24:59 -0600 | [diff] [blame] | 836 | int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 837 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
| 838 | 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] | 839 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 841 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
| 842 | struct pci_dev *from); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 843 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | unsigned int ss_vendor, unsigned int ss_device, |
Greg KH | b08508c | 2008-08-26 08:20:34 -0700 | [diff] [blame] | 845 | struct pci_dev *from); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 846 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
Andrew Patterson | 3c299dc | 2009-10-12 13:14:00 -0600 | [diff] [blame] | 847 | struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
| 848 | unsigned int devfn); |
| 849 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| 850 | unsigned int devfn) |
| 851 | { |
| 852 | return pci_get_domain_bus_and_slot(0, bus, devfn); |
| 853 | } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 854 | 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] | 855 | int pci_dev_present(const struct pci_device_id *ids); |
| 856 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 857 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
| 858 | int where, u8 *val); |
| 859 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, |
| 860 | int where, u16 *val); |
| 861 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, |
| 862 | int where, u32 *val); |
| 863 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, |
| 864 | int where, u8 val); |
| 865 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, |
| 866 | int where, u16 val); |
| 867 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, |
| 868 | int where, u32 val); |
Rob Herring | 1f94a94 | 2015-01-09 20:34:39 -0600 | [diff] [blame] | 869 | |
| 870 | int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn, |
| 871 | int where, int size, u32 *val); |
| 872 | int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn, |
| 873 | int where, int size, u32 val); |
| 874 | int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn, |
| 875 | int where, int size, u32 *val); |
| 876 | int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn, |
| 877 | int where, int size, u32 val); |
| 878 | |
Huang Ying | a72b46c | 2009-04-24 10:45:17 +0800 | [diff] [blame] | 879 | struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 881 | static inline int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 883 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | } |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 885 | static inline int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 887 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | } |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 889 | static inline int pci_read_config_dword(const struct pci_dev *dev, int where, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 890 | u32 *val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 892 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | } |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 894 | static inline int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 896 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | } |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 898 | static inline int pci_write_config_word(const struct pci_dev *dev, int where, u16 val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 900 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | } |
Al Viro | bf362f7 | 2012-03-19 00:01:09 +0000 | [diff] [blame] | 902 | static inline int pci_write_config_dword(const struct pci_dev *dev, int where, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 903 | u32 val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | { |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 905 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | |
Jiang Liu | 8c0d3a0 | 2012-07-24 17:20:05 +0800 | [diff] [blame] | 908 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
| 909 | int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); |
| 910 | int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); |
| 911 | int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); |
| 912 | int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, |
| 913 | u16 clear, u16 set); |
| 914 | int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, |
| 915 | u32 clear, u32 set); |
| 916 | |
| 917 | static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, |
| 918 | u16 set) |
| 919 | { |
| 920 | return pcie_capability_clear_and_set_word(dev, pos, 0, set); |
| 921 | } |
| 922 | |
| 923 | static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, |
| 924 | u32 set) |
| 925 | { |
| 926 | return pcie_capability_clear_and_set_dword(dev, pos, 0, set); |
| 927 | } |
| 928 | |
| 929 | static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, |
| 930 | u16 clear) |
| 931 | { |
| 932 | return pcie_capability_clear_and_set_word(dev, pos, clear, 0); |
| 933 | } |
| 934 | |
| 935 | static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, |
| 936 | u32 clear) |
| 937 | { |
| 938 | return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); |
| 939 | } |
| 940 | |
Alex Williamson | c63587d | 2012-06-11 05:27:19 +0000 | [diff] [blame] | 941 | /* user-space driven config access */ |
| 942 | int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); |
| 943 | int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); |
| 944 | int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); |
| 945 | int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); |
| 946 | int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); |
| 947 | int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); |
| 948 | |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 949 | int __must_check pci_enable_device(struct pci_dev *dev); |
Benjamin Herrenschmidt | b718989 | 2007-12-20 15:28:08 +1100 | [diff] [blame] | 950 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
| 951 | int __must_check pci_enable_device_mem(struct pci_dev *dev); |
Tejun Heo | 0b62e13 | 2007-07-27 14:43:35 +0900 | [diff] [blame] | 952 | int __must_check pci_reenable_device(struct pci_dev *); |
Tejun Heo | 9ac7849 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 953 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
| 954 | void pcim_pin_device(struct pci_dev *pdev); |
| 955 | |
Yuji Shimada | 296ccb0 | 2009-04-03 16:41:46 +0900 | [diff] [blame] | 956 | static inline int pci_is_enabled(struct pci_dev *pdev) |
| 957 | { |
| 958 | return (atomic_read(&pdev->enable_cnt) > 0); |
| 959 | } |
| 960 | |
Tejun Heo | 9ac7849 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 961 | static inline int pci_is_managed(struct pci_dev *pdev) |
| 962 | { |
| 963 | return pdev->is_managed; |
| 964 | } |
| 965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | void pci_disable_device(struct pci_dev *dev); |
Myron Stowe | 96c5590 | 2011-10-28 15:48:38 -0600 | [diff] [blame] | 967 | |
| 968 | extern unsigned int pcibios_max_latency; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | void pci_set_master(struct pci_dev *dev); |
Ben Hutchings | 6a47907 | 2008-12-23 03:08:29 +0000 | [diff] [blame] | 970 | void pci_clear_master(struct pci_dev *dev); |
Myron Stowe | 96c5590 | 2011-10-28 15:48:38 -0600 | [diff] [blame] | 971 | |
Brian King | f7bdd12 | 2007-04-06 16:39:36 -0500 | [diff] [blame] | 972 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
Tejun Heo | 15ea76d | 2009-09-22 17:34:48 +0900 | [diff] [blame] | 973 | int pci_set_cacheline_size(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | #define HAVE_PCI_SET_MWI |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 975 | int __must_check pci_set_mwi(struct pci_dev *dev); |
Randy Dunlap | 694625c | 2007-07-09 11:55:54 -0700 | [diff] [blame] | 976 | int pci_try_set_mwi(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | void pci_clear_mwi(struct pci_dev *dev); |
Brett M Russ | a04ce0f | 2005-08-15 15:23:41 -0400 | [diff] [blame] | 978 | void pci_intx(struct pci_dev *dev, int enable); |
Jan Kiszka | a2e2778 | 2011-11-04 09:46:00 +0100 | [diff] [blame] | 979 | bool pci_intx_mask_supported(struct pci_dev *dev); |
| 980 | bool pci_check_and_mask_intx(struct pci_dev *dev); |
| 981 | bool pci_check_and_unmask_intx(struct pci_dev *dev); |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 982 | 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] | 983 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
Alex Williamson | 157e876 | 2013-12-17 16:43:39 -0700 | [diff] [blame] | 984 | int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask); |
Casey Leedom | 3775a20 | 2013-08-06 15:48:36 +0530 | [diff] [blame] | 985 | int pci_wait_for_pending_transaction(struct pci_dev *dev); |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 986 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
| 987 | int pcix_get_mmrbc(struct pci_dev *dev); |
| 988 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); |
Brice Goglin | 2637e5b | 2007-08-14 12:43:48 +0200 | [diff] [blame] | 989 | int pcie_get_readrq(struct pci_dev *dev); |
Peter Oruba | d556ad4 | 2007-05-15 13:59:13 +0200 | [diff] [blame] | 990 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
Jon Mason | b03e749 | 2011-07-20 15:20:54 -0500 | [diff] [blame] | 991 | int pcie_get_mps(struct pci_dev *dev); |
| 992 | int pcie_set_mps(struct pci_dev *dev, int mps); |
Jacob Keller | 81377c8 | 2013-07-31 06:53:26 +0000 | [diff] [blame] | 993 | int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, |
| 994 | enum pcie_link_width *width); |
Yu Zhao | 8c1c699 | 2009-06-13 15:52:13 +0800 | [diff] [blame] | 995 | int __pci_reset_function(struct pci_dev *dev); |
Konrad Rzeszutek Wilk | a96d627 | 2012-01-04 14:23:56 -0500 | [diff] [blame] | 996 | int __pci_reset_function_locked(struct pci_dev *dev); |
Sheng Yang | 8dd7f80 | 2008-10-21 17:38:25 +0800 | [diff] [blame] | 997 | int pci_reset_function(struct pci_dev *dev); |
Alex Williamson | 61cf16d | 2013-12-16 15:14:31 -0700 | [diff] [blame] | 998 | int pci_try_reset_function(struct pci_dev *dev); |
Alex Williamson | 9a3d2b9 | 2013-08-14 14:06:05 -0600 | [diff] [blame] | 999 | int pci_probe_reset_slot(struct pci_slot *slot); |
Alex Williamson | 090a3c5 | 2013-08-08 14:09:55 -0600 | [diff] [blame] | 1000 | int pci_reset_slot(struct pci_slot *slot); |
Alex Williamson | 61cf16d | 2013-12-16 15:14:31 -0700 | [diff] [blame] | 1001 | int pci_try_reset_slot(struct pci_slot *slot); |
Alex Williamson | 9a3d2b9 | 2013-08-14 14:06:05 -0600 | [diff] [blame] | 1002 | int pci_probe_reset_bus(struct pci_bus *bus); |
Alex Williamson | 090a3c5 | 2013-08-08 14:09:55 -0600 | [diff] [blame] | 1003 | int pci_reset_bus(struct pci_bus *bus); |
Alex Williamson | 61cf16d | 2013-12-16 15:14:31 -0700 | [diff] [blame] | 1004 | int pci_try_reset_bus(struct pci_bus *bus); |
Gavin Shan | 9e33002 | 2014-06-19 17:22:44 +1000 | [diff] [blame] | 1005 | void pci_reset_secondary_bus(struct pci_dev *dev); |
| 1006 | void pcibios_reset_secondary_bus(struct pci_dev *dev); |
Alex Williamson | 64e8674 | 2013-08-08 14:09:24 -0600 | [diff] [blame] | 1007 | void pci_reset_bridge_secondary_bus(struct pci_dev *dev); |
Yu Zhao | 14add80 | 2008-11-22 02:38:52 +0800 | [diff] [blame] | 1008 | void pci_update_resource(struct pci_dev *dev, int resno); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 1009 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
Ram Pai | 2bbc694 | 2011-07-25 13:08:39 -0700 | [diff] [blame] | 1010 | int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
Hidetoshi Seto | c87deff | 2006-12-18 10:31:06 +0900 | [diff] [blame] | 1011 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
Rafael J. Wysocki | 8496e85 | 2013-12-01 02:34:37 +0100 | [diff] [blame] | 1012 | bool pci_device_is_present(struct pci_dev *pdev); |
Rafael J. Wysocki | 0824965 | 2015-04-13 16:23:36 +0200 | [diff] [blame] | 1013 | void pci_ignore_hotplug(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | |
| 1015 | /* ROM control related routines */ |
Alan Cox | e416de5 | 2008-09-23 17:25:10 +0100 | [diff] [blame] | 1016 | int pci_enable_rom(struct pci_dev *pdev); |
| 1017 | void pci_disable_rom(struct pci_dev *pdev); |
Dave Jones | 144a50e | 2005-08-09 00:20:10 -0400 | [diff] [blame] | 1018 | 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] | 1019 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
Timothy S. Nelson | 97c4483 | 2009-01-30 06:12:47 +1100 | [diff] [blame] | 1020 | size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); |
Matthew Garrett | fffe01f | 2013-03-26 17:25:54 -0400 | [diff] [blame] | 1021 | void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | |
| 1023 | /* Power management related routines */ |
| 1024 | int pci_save_state(struct pci_dev *dev); |
Jon Mason | 1d3c16a | 2010-11-30 17:43:26 -0600 | [diff] [blame] | 1025 | void pci_restore_state(struct pci_dev *dev); |
Alex Williamson | ffbdd3f | 2011-05-10 10:02:27 -0600 | [diff] [blame] | 1026 | struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
Konrad Rzeszutek Wilk | 98d9b27 | 2014-12-03 16:40:31 -0500 | [diff] [blame] | 1027 | int pci_load_saved_state(struct pci_dev *dev, |
| 1028 | struct pci_saved_state *state); |
Alex Williamson | ffbdd3f | 2011-05-10 10:02:27 -0600 | [diff] [blame] | 1029 | int pci_load_and_free_saved_state(struct pci_dev *dev, |
| 1030 | struct pci_saved_state **state); |
Alex Williamson | fd0f7f7 | 2013-12-17 16:43:45 -0700 | [diff] [blame] | 1031 | struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap); |
| 1032 | struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev, |
| 1033 | u16 cap); |
| 1034 | int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size); |
| 1035 | int pci_add_ext_cap_save_buffer(struct pci_dev *dev, |
| 1036 | u16 cap, unsigned int size); |
Rafael J. Wysocki | 0e5dd46 | 2009-03-26 22:51:40 +0100 | [diff] [blame] | 1037 | int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 1038 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
| 1039 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
Rafael J. Wysocki | e5899e1 | 2008-07-19 14:39:24 +0200 | [diff] [blame] | 1040 | bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
Rafael J. Wysocki | 5a6c9b6 | 2008-08-08 00:14:24 +0200 | [diff] [blame] | 1041 | void pci_pme_active(struct pci_dev *dev, bool enable); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1042 | int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| 1043 | bool runtime, bool enable); |
Rafael J. Wysocki | 0235c4f | 2008-08-18 21:38:00 +0200 | [diff] [blame] | 1044 | int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
Rafael J. Wysocki | 404cc2d | 2008-07-07 03:35:26 +0200 | [diff] [blame] | 1045 | int pci_prepare_to_sleep(struct pci_dev *dev); |
| 1046 | int pci_back_from_sleep(struct pci_dev *dev); |
Rafael J. Wysocki | b67ea76 | 2010-02-17 23:44:09 +0100 | [diff] [blame] | 1047 | bool pci_dev_run_wake(struct pci_dev *dev); |
Matthew Garrett | bf4d290 | 2010-10-04 14:22:26 -0400 | [diff] [blame] | 1048 | bool pci_check_pme_status(struct pci_dev *dev); |
Matthew Garrett | bf4d290 | 2010-10-04 14:22:26 -0400 | [diff] [blame] | 1049 | void pci_pme_wakeup_bus(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1051 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| 1052 | bool enable) |
| 1053 | { |
| 1054 | return __pci_enable_wake(dev, state, false, enable); |
| 1055 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | |
Alex Williamson | 425c1b2 | 2013-12-17 16:43:51 -0700 | [diff] [blame] | 1057 | /* PCI Virtual Channel */ |
| 1058 | int pci_save_vc_state(struct pci_dev *dev); |
| 1059 | void pci_restore_vc_state(struct pci_dev *dev); |
| 1060 | void pci_allocate_vc_save_buffers(struct pci_dev *dev); |
Jesse Barnes | 51c2e0a | 2011-01-14 08:53:04 -0800 | [diff] [blame] | 1061 | |
Benjamin Herrenschmidt | bb209c8 | 2010-01-26 17:10:03 +0000 | [diff] [blame] | 1062 | /* For use by arch with custom probe code */ |
| 1063 | void set_pcie_port_type(struct pci_dev *pdev); |
| 1064 | void set_pcie_hotplug_bridge(struct pci_dev *pdev); |
| 1065 | |
Kumar Gala | ce5ccde | 2007-07-16 23:27:10 -0500 | [diff] [blame] | 1066 | /* Functions for PCI Hotplug drivers to use */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1067 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
Yinghai Lu | 2f32052 | 2012-01-21 02:08:22 -0800 | [diff] [blame] | 1068 | unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
Alex Chiang | 3ed4fd9 | 2009-03-20 14:56:25 -0600 | [diff] [blame] | 1069 | unsigned int pci_rescan_bus(struct pci_bus *bus); |
Rafael J. Wysocki | 9d16947 | 2014-01-10 15:22:18 +0100 | [diff] [blame] | 1070 | void pci_lock_rescan_remove(void); |
| 1071 | void pci_unlock_rescan_remove(void); |
Kumar Gala | ce5ccde | 2007-07-16 23:27:10 -0500 | [diff] [blame] | 1072 | |
Stephen Hemminger | 287d19c | 2008-12-18 09:17:16 -0800 | [diff] [blame] | 1073 | /* Vital product data routines */ |
| 1074 | ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); |
| 1075 | ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); |
| 1076 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
Myron Stowe | 925845b | 2011-11-21 11:54:13 -0700 | [diff] [blame] | 1078 | resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
Andrew Morton | ea74155 | 2009-02-18 10:44:29 -0800 | [diff] [blame] | 1079 | void pci_bus_assign_resources(const struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | void pci_bus_size_bridges(struct pci_bus *bus); |
| 1081 | int pci_claim_resource(struct pci_dev *, int); |
Yinghai Lu | 8505e72 | 2015-01-15 16:21:49 -0600 | [diff] [blame] | 1082 | int pci_claim_bridge_resource(struct pci_dev *bridge, int i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | void pci_assign_unassigned_resources(void); |
Yinghai Lu | 6841ec6 | 2010-01-22 01:02:25 -0800 | [diff] [blame] | 1084 | void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
Yinghai Lu | 1778794 | 2012-10-30 14:31:10 -0600 | [diff] [blame] | 1085 | void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
Yinghai Lu | 3977203 | 2013-07-22 14:37:18 -0700 | [diff] [blame] | 1086 | void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | void pdev_enable_device(struct pci_dev *); |
Bjorn Helgaas | 842de40 | 2008-03-04 11:56:47 -0700 | [diff] [blame] | 1088 | int pci_enable_resources(struct pci_dev *, int mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
Ralf Baechle | d534194 | 2011-06-10 15:30:21 +0100 | [diff] [blame] | 1090 | int (*)(const struct pci_dev *, u8, u8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | #define HAVE_PCI_REQ_REGIONS 2 |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 1092 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
Arjan van de Ven | e8de148 | 2008-10-22 19:55:31 -0700 | [diff] [blame] | 1093 | int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | void pci_release_regions(struct pci_dev *); |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 1095 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
Arjan van de Ven | e8de148 | 2008-10-22 19:55:31 -0700 | [diff] [blame] | 1096 | int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | void pci_release_region(struct pci_dev *, int); |
Hidetoshi Seto | c87deff | 2006-12-18 10:31:06 +0900 | [diff] [blame] | 1098 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
Arjan van de Ven | e8de148 | 2008-10-22 19:55:31 -0700 | [diff] [blame] | 1099 | int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
Hidetoshi Seto | c87deff | 2006-12-18 10:31:06 +0900 | [diff] [blame] | 1100 | void pci_release_selected_regions(struct pci_dev *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
| 1102 | /* drivers/pci/bus.c */ |
Jiang Liu | fe830ef | 2013-05-25 21:48:29 +0800 | [diff] [blame] | 1103 | struct pci_bus *pci_bus_get(struct pci_bus *bus); |
| 1104 | void pci_bus_put(struct pci_bus *bus); |
Bjorn Helgaas | 45ca9e9 | 2011-10-28 16:25:35 -0600 | [diff] [blame] | 1105 | void pci_add_resource(struct list_head *resources, struct resource *res); |
Bjorn Helgaas | 0efd5aa | 2012-02-23 20:19:00 -0700 | [diff] [blame] | 1106 | void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
| 1107 | resource_size_t offset); |
Bjorn Helgaas | 45ca9e9 | 2011-10-28 16:25:35 -0600 | [diff] [blame] | 1108 | void pci_free_resource_list(struct list_head *resources); |
Bjorn Helgaas | 2fe2abf | 2010-02-23 10:24:36 -0700 | [diff] [blame] | 1109 | void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); |
| 1110 | struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); |
| 1111 | void pci_bus_remove_resources(struct pci_bus *bus); |
| 1112 | |
Bjorn Helgaas | 89a74ec | 2010-02-23 10:24:31 -0700 | [diff] [blame] | 1113 | #define pci_bus_for_each_resource(bus, res, i) \ |
Bjorn Helgaas | 2fe2abf | 2010-02-23 10:24:36 -0700 | [diff] [blame] | 1114 | for (i = 0; \ |
| 1115 | (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ |
| 1116 | i++) |
Bjorn Helgaas | 89a74ec | 2010-02-23 10:24:31 -0700 | [diff] [blame] | 1117 | |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 1118 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
| 1119 | struct resource *res, resource_size_t size, |
| 1120 | resource_size_t align, resource_size_t min, |
Bjorn Helgaas | 664c284 | 2014-03-07 13:51:12 -0700 | [diff] [blame] | 1121 | unsigned long type_mask, |
Dominik Brodowski | 3b7a17f | 2010-01-01 17:40:50 +0100 | [diff] [blame] | 1122 | resource_size_t (*alignf)(void *, |
| 1123 | const struct resource *, |
Dominik Brodowski | b26b2d4 | 2010-01-01 17:40:49 +0100 | [diff] [blame] | 1124 | resource_size_t, |
| 1125 | resource_size_t), |
Andrew Morton | 4a7fb63 | 2006-08-14 22:43:17 -0700 | [diff] [blame] | 1126 | void *alignf_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | |
Liviu Dudau | 8b921ac | 2014-09-29 15:29:30 +0100 | [diff] [blame] | 1128 | |
| 1129 | int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr); |
| 1130 | |
Yinghai Lu | 3a9ad0b | 2015-05-27 17:23:51 -0700 | [diff] [blame] | 1131 | static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar) |
Bjorn Helgaas | 06cf56e | 2013-12-21 08:33:26 -0700 | [diff] [blame] | 1132 | { |
| 1133 | struct pci_bus_region region; |
| 1134 | |
| 1135 | pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]); |
| 1136 | return region.start; |
| 1137 | } |
| 1138 | |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1139 | /* Proper probing supporting hot-pluggable devices */ |
Greg Kroah-Hartman | 725522b | 2007-01-15 11:50:02 -0800 | [diff] [blame] | 1140 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
| 1141 | const char *mod_name); |
Andrew Morton | bba8116 | 2008-07-30 12:07:04 -0700 | [diff] [blame] | 1142 | |
| 1143 | /* |
| 1144 | * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded |
| 1145 | */ |
| 1146 | #define pci_register_driver(driver) \ |
| 1147 | __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1148 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1149 | void pci_unregister_driver(struct pci_driver *dev); |
Greg Kroah-Hartman | aad4f40 | 2011-11-18 10:12:49 -0800 | [diff] [blame] | 1150 | |
| 1151 | /** |
| 1152 | * module_pci_driver() - Helper macro for registering a PCI driver |
| 1153 | * @__pci_driver: pci_driver struct |
| 1154 | * |
| 1155 | * Helper macro for PCI drivers which do not do anything special in module |
| 1156 | * init/exit. This eliminates a lot of boilerplate. Each module may only |
| 1157 | * use this macro once, and calling it replaces module_init() and module_exit() |
| 1158 | */ |
| 1159 | #define module_pci_driver(__pci_driver) \ |
| 1160 | module_driver(__pci_driver, pci_register_driver, \ |
| 1161 | pci_unregister_driver) |
| 1162 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1163 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 1164 | int pci_add_dynid(struct pci_driver *drv, |
| 1165 | unsigned int vendor, unsigned int device, |
| 1166 | unsigned int subvendor, unsigned int subdevice, |
| 1167 | unsigned int class, unsigned int class_mask, |
| 1168 | unsigned long driver_data); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1169 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
| 1170 | struct pci_dev *dev); |
| 1171 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, |
| 1172 | int pass); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | |
Zhang, Yanmin | 70298c6 | 2009-06-16 13:34:38 +0800 | [diff] [blame] | 1174 | void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
Paul Mackerras | cecf486 | 2005-08-18 14:33:01 +1000 | [diff] [blame] | 1175 | void *userdata); |
Benjamin Herrenschmidt | ac7dc65 | 2005-12-13 18:09:16 +1100 | [diff] [blame] | 1176 | int pci_cfg_space_size(struct pci_dev *dev); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1177 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
Benjamin Herrenschmidt | e244427 | 2011-09-11 14:08:38 -0300 | [diff] [blame] | 1178 | void pci_setup_bridge(struct pci_bus *bus); |
Gavin Shan | ac5ad93 | 2012-09-11 16:59:45 -0600 | [diff] [blame] | 1179 | resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
| 1180 | unsigned long type); |
Wei Yang | 978d2d6 | 2015-03-25 16:23:50 +0800 | [diff] [blame] | 1181 | resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); |
Paul Mackerras | cecf486 | 2005-08-18 14:33:01 +1000 | [diff] [blame] | 1182 | |
Dave Airlie | 3448a19 | 2010-06-01 15:32:24 +1000 | [diff] [blame] | 1183 | #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
| 1184 | #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) |
| 1185 | |
Benjamin Herrenschmidt | deb2d2e | 2009-08-11 15:52:06 +1000 | [diff] [blame] | 1186 | int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
Dave Airlie | 3448a19 | 2010-06-01 15:32:24 +1000 | [diff] [blame] | 1187 | unsigned int command_bits, u32 flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
| 1189 | |
FUJITA Tomonori | f41b177 | 2010-03-10 15:23:30 -0800 | [diff] [blame] | 1190 | #include <linux/pci-dma.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | #include <linux/dmapool.h> |
| 1192 | |
| 1193 | #define pci_pool dma_pool |
| 1194 | #define pci_pool_create(name, pdev, size, align, allocation) \ |
| 1195 | dma_pool_create(name, &pdev->dev, size, align, allocation) |
| 1196 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
| 1197 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
| 1198 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
| 1199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | struct msix_entry { |
Yinghai Lu | 16dbef4 | 2008-08-15 19:36:45 -0700 | [diff] [blame] | 1201 | u32 vector; /* kernel uses to write allocated vector */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | u16 entry; /* driver uses to specify entry, OS writes */ |
| 1203 | }; |
| 1204 | |
Eric W. Biederman | 0366f8f | 2006-10-04 02:16:33 -0700 | [diff] [blame] | 1205 | |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1206 | #ifdef CONFIG_PCI_MSI |
| 1207 | int pci_msi_vec_count(struct pci_dev *dev); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1208 | void pci_msi_shutdown(struct pci_dev *dev); |
| 1209 | void pci_disable_msi(struct pci_dev *dev); |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1210 | int pci_msix_vec_count(struct pci_dev *dev); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1211 | int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec); |
| 1212 | void pci_msix_shutdown(struct pci_dev *dev); |
| 1213 | void pci_disable_msix(struct pci_dev *dev); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1214 | void pci_restore_msi_state(struct pci_dev *dev); |
| 1215 | int pci_msi_enabled(void); |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1216 | int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec); |
Alexander Gordeev | f7fc32c | 2014-02-13 15:25:02 +0100 | [diff] [blame] | 1217 | static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) |
| 1218 | { |
| 1219 | int rc = pci_enable_msi_range(dev, nvec, nvec); |
| 1220 | if (rc < 0) |
| 1221 | return rc; |
| 1222 | return 0; |
| 1223 | } |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1224 | int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, |
| 1225 | int minvec, int maxvec); |
Alexander Gordeev | f7fc32c | 2014-02-13 15:25:02 +0100 | [diff] [blame] | 1226 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
| 1227 | struct msix_entry *entries, int nvec) |
| 1228 | { |
| 1229 | int rc = pci_enable_msix_range(dev, entries, nvec, nvec); |
| 1230 | if (rc < 0) |
| 1231 | return rc; |
| 1232 | return 0; |
| 1233 | } |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1234 | #else |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1235 | static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1236 | static inline void pci_msi_shutdown(struct pci_dev *dev) { } |
| 1237 | static inline void pci_disable_msi(struct pci_dev *dev) { } |
| 1238 | static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1239 | static inline int pci_enable_msix(struct pci_dev *dev, |
| 1240 | struct msix_entry *entries, int nvec) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1241 | { return -ENOSYS; } |
| 1242 | static inline void pci_msix_shutdown(struct pci_dev *dev) { } |
| 1243 | static inline void pci_disable_msix(struct pci_dev *dev) { } |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1244 | static inline void pci_restore_msi_state(struct pci_dev *dev) { } |
| 1245 | static inline int pci_msi_enabled(void) { return 0; } |
Alexander Gordeev | 302a252 | 2013-12-30 08:28:16 +0100 | [diff] [blame] | 1246 | static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec, |
| 1247 | int maxvec) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1248 | { return -ENOSYS; } |
Alexander Gordeev | f7fc32c | 2014-02-13 15:25:02 +0100 | [diff] [blame] | 1249 | static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) |
| 1250 | { return -ENOSYS; } |
Alexander Gordeev | 302a252 | 2013-12-30 08:28:16 +0100 | [diff] [blame] | 1251 | static inline int pci_enable_msix_range(struct pci_dev *dev, |
| 1252 | struct msix_entry *entries, int minvec, int maxvec) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1253 | { return -ENOSYS; } |
Alexander Gordeev | f7fc32c | 2014-02-13 15:25:02 +0100 | [diff] [blame] | 1254 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
| 1255 | struct msix_entry *entries, int nvec) |
| 1256 | { return -ENOSYS; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | #endif |
| 1258 | |
Markus Trippelsdorf | ab0724f | 2011-01-15 00:07:22 +0100 | [diff] [blame] | 1259 | #ifdef CONFIG_PCIEPORTBUS |
Rafael J. Wysocki | 415e12b | 2011-01-07 00:55:09 +0100 | [diff] [blame] | 1260 | extern bool pcie_ports_disabled; |
| 1261 | extern bool pcie_ports_auto; |
Markus Trippelsdorf | ab0724f | 2011-01-15 00:07:22 +0100 | [diff] [blame] | 1262 | #else |
| 1263 | #define pcie_ports_disabled true |
| 1264 | #define pcie_ports_auto false |
| 1265 | #endif |
Rafael J. Wysocki | 415e12b | 2011-01-07 00:55:09 +0100 | [diff] [blame] | 1266 | |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1267 | #ifdef CONFIG_PCIEASPM |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1268 | bool pcie_aspm_support_enabled(void); |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1269 | #else |
| 1270 | static inline bool pcie_aspm_support_enabled(void) { return false; } |
Andrew Patterson | 3e1b160 | 2008-11-10 15:30:55 -0700 | [diff] [blame] | 1271 | #endif |
| 1272 | |
Rafael J. Wysocki | 415e12b | 2011-01-07 00:55:09 +0100 | [diff] [blame] | 1273 | #ifdef CONFIG_PCIEAER |
| 1274 | void pci_no_aer(void); |
| 1275 | bool pci_aer_available(void); |
| 1276 | #else |
| 1277 | static inline void pci_no_aer(void) { } |
| 1278 | static inline bool pci_aer_available(void) { return false; } |
| 1279 | #endif |
| 1280 | |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1281 | #ifdef CONFIG_PCIE_ECRC |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1282 | void pcie_set_ecrc_checking(struct pci_dev *dev); |
| 1283 | void pcie_ecrc_get_policy(char *str); |
Bjorn Helgaas | 4c85980 | 2014-01-13 17:01:11 -0700 | [diff] [blame] | 1284 | #else |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1285 | static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } |
| 1286 | static inline void pcie_ecrc_get_policy(char *str) { } |
Andrew Patterson | 43c1640 | 2009-04-22 16:52:09 -0600 | [diff] [blame] | 1287 | #endif |
| 1288 | |
Alexander Gordeev | 034cd97 | 2014-04-14 15:28:35 +0200 | [diff] [blame] | 1289 | #define pci_enable_msi(pdev) pci_enable_msi_exact(pdev, 1) |
Matthew Wilcox | 1c8d7b0 | 2009-03-17 08:54:10 -0400 | [diff] [blame] | 1290 | |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 1291 | #ifdef CONFIG_HT_IRQ |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 1292 | /* The functions a driver should call */ |
| 1293 | int ht_create_irq(struct pci_dev *dev, int idx); |
| 1294 | void ht_destroy_irq(unsigned int irq); |
Eric W. Biederman | 8b955b0 | 2006-10-04 02:16:55 -0700 | [diff] [blame] | 1295 | #endif /* CONFIG_HT_IRQ */ |
| 1296 | |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1297 | void pci_cfg_access_lock(struct pci_dev *dev); |
| 1298 | bool pci_cfg_access_trylock(struct pci_dev *dev); |
| 1299 | void pci_cfg_access_unlock(struct pci_dev *dev); |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 1300 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 1301 | /* |
| 1302 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1303 | * a PCI domain is defined to be a set of PCI buses which share |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 1304 | * configuration space. |
| 1305 | */ |
Jeff Garzik | 32a2eea | 2007-10-11 16:57:27 -0400 | [diff] [blame] | 1306 | #ifdef CONFIG_PCI_DOMAINS |
| 1307 | extern int pci_domains_supported; |
Liviu Dudau | 41e5c0f | 2014-09-29 15:29:27 +0100 | [diff] [blame] | 1308 | int pci_get_new_domain_nr(void); |
Jeff Garzik | 32a2eea | 2007-10-11 16:57:27 -0400 | [diff] [blame] | 1309 | #else |
| 1310 | enum { pci_domains_supported = 0 }; |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1311 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| 1312 | static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } |
Liviu Dudau | 41e5c0f | 2014-09-29 15:29:27 +0100 | [diff] [blame] | 1313 | static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } |
Jeff Garzik | 32a2eea | 2007-10-11 16:57:27 -0400 | [diff] [blame] | 1314 | #endif /* CONFIG_PCI_DOMAINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | |
Catalin Marinas | 670ba0c | 2014-09-29 15:29:26 +0100 | [diff] [blame] | 1316 | /* |
| 1317 | * Generic implementation for PCI domain support. If your |
| 1318 | * architecture does not need custom management of PCI |
| 1319 | * domains then this implementation will be used |
| 1320 | */ |
| 1321 | #ifdef CONFIG_PCI_DOMAINS_GENERIC |
| 1322 | static inline int pci_domain_nr(struct pci_bus *bus) |
| 1323 | { |
| 1324 | return bus->domain_nr; |
| 1325 | } |
| 1326 | void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent); |
| 1327 | #else |
| 1328 | static inline void pci_bus_assign_domain_nr(struct pci_bus *bus, |
| 1329 | struct device *parent) |
| 1330 | { |
| 1331 | } |
| 1332 | #endif |
| 1333 | |
Mike Travis | 95a8b6e | 2010-02-02 14:38:13 -0800 | [diff] [blame] | 1334 | /* some architectures require additional setup to direct VGA traffic */ |
| 1335 | typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, |
Dave Airlie | 3448a19 | 2010-06-01 15:32:24 +1000 | [diff] [blame] | 1336 | unsigned int command_bits, u32 flags); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1337 | void pci_register_set_vga_state(arch_set_vga_state_t func); |
Mike Travis | 95a8b6e | 2010-02-02 14:38:13 -0800 | [diff] [blame] | 1338 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 1339 | #else /* CONFIG_PCI is not enabled */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | |
| 1341 | /* |
| 1342 | * If the system does not have PCI, clearly these return errors. Define |
| 1343 | * these as simple inline functions to avoid hair in drivers. |
| 1344 | */ |
| 1345 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1346 | #define _PCI_NOP(o, s, t) \ |
| 1347 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ |
| 1348 | int where, t val) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1350 | |
| 1351 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ |
| 1352 | _PCI_NOP(o, word, u16 x) \ |
| 1353 | _PCI_NOP(o, dword, u32 x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | _PCI_NOP_ALL(read, *) |
| 1355 | _PCI_NOP_ALL(write,) |
| 1356 | |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 1357 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1358 | unsigned int device, |
| 1359 | struct pci_dev *from) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1360 | { return NULL; } |
Andrew Morton | d42552c | 2006-10-21 10:24:12 -0700 | [diff] [blame] | 1361 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1362 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
| 1363 | unsigned int device, |
| 1364 | unsigned int ss_vendor, |
| 1365 | unsigned int ss_device, |
Greg KH | b08508c | 2008-08-26 08:20:34 -0700 | [diff] [blame] | 1366 | struct pci_dev *from) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1367 | { return NULL; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1369 | static inline struct pci_dev *pci_get_class(unsigned int class, |
| 1370 | struct pci_dev *from) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1371 | { return NULL; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | |
| 1373 | #define pci_dev_present(ids) (0) |
Zhang, Yanmin | ed4aaad | 2007-07-15 23:39:39 -0700 | [diff] [blame] | 1374 | #define no_pci_devices() (1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | #define pci_dev_put(dev) do { } while (0) |
| 1376 | |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1377 | static inline void pci_set_master(struct pci_dev *dev) { } |
| 1378 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } |
| 1379 | static inline void pci_disable_device(struct pci_dev *dev) { } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1380 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1381 | { return -EIO; } |
Randy Dunlap | 80be038 | 2008-06-30 11:35:53 -0700 | [diff] [blame] | 1382 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1383 | { return -EIO; } |
FUJITA Tomonori | 4d57cdf | 2008-02-04 22:27:55 -0800 | [diff] [blame] | 1384 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
| 1385 | unsigned int size) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1386 | { return -EIO; } |
FUJITA Tomonori | 59fc67d | 2008-02-04 22:28:14 -0800 | [diff] [blame] | 1387 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
| 1388 | unsigned long mask) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1389 | { return -EIO; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1390 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1391 | { return -EBUSY; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1392 | static inline int __pci_register_driver(struct pci_driver *drv, |
| 1393 | struct module *owner) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1394 | { return 0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1395 | static inline int pci_register_driver(struct pci_driver *drv) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1396 | { return 0; } |
| 1397 | static inline void pci_unregister_driver(struct pci_driver *drv) { } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1398 | static inline int pci_find_capability(struct pci_dev *dev, int cap) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1399 | { return 0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1400 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
| 1401 | int cap) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1402 | { return 0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1403 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1404 | { return 0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | /* Power management related routines */ |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1407 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
| 1408 | static inline void pci_restore_state(struct pci_dev *dev) { } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1409 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1410 | { return 0; } |
Randy Dunlap | 3449248 | 2011-02-14 12:27:50 -0800 | [diff] [blame] | 1411 | static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1412 | { return 0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1413 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
| 1414 | pm_message_t state) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1415 | { return PCI_D0; } |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1416 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| 1417 | int enable) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1418 | { return 0; } |
Jesse Barnes | 48a92a8 | 2011-01-10 12:46:36 -0800 | [diff] [blame] | 1419 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1420 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1421 | { return -EIO; } |
| 1422 | static inline void pci_release_regions(struct pci_dev *dev) { } |
Sergei Shtylyov | 0da0ead | 2007-04-01 21:13:58 +0400 | [diff] [blame] | 1423 | |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1424 | static inline void pci_block_cfg_access(struct pci_dev *dev) { } |
Jan Kiszka | fb51ccb | 2011-11-04 09:45:59 +0100 | [diff] [blame] | 1425 | static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
| 1426 | { return 0; } |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1427 | static inline void pci_unblock_cfg_access(struct pci_dev *dev) { } |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 1428 | |
Randy Dunlap | d80d021 | 2007-07-01 12:06:37 -0700 | [diff] [blame] | 1429 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
| 1430 | { return NULL; } |
Randy Dunlap | d80d021 | 2007-07-01 12:06:37 -0700 | [diff] [blame] | 1431 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
| 1432 | unsigned int devfn) |
| 1433 | { return NULL; } |
Randy Dunlap | d80d021 | 2007-07-01 12:06:37 -0700 | [diff] [blame] | 1434 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| 1435 | unsigned int devfn) |
| 1436 | { return NULL; } |
| 1437 | |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1438 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| 1439 | static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } |
Liviu Dudau | 41e5c0f | 2014-09-29 15:29:27 +0100 | [diff] [blame] | 1440 | static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } |
Alex Williamson | 12ea6ca | 2012-06-11 05:26:55 +0000 | [diff] [blame] | 1441 | |
Williams, Mitch A | fb8a0d9 | 2010-02-10 01:43:04 +0000 | [diff] [blame] | 1442 | #define dev_is_pci(d) (false) |
| 1443 | #define dev_is_pf(d) (false) |
| 1444 | #define dev_num_vf(d) (0) |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 1445 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 1447 | /* Include architecture-dependent settings and functions */ |
| 1448 | |
| 1449 | #include <asm/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | |
| 1451 | /* these helpers provide future and backwards compatibility |
| 1452 | * for accessing popular PCI BAR info */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1453 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
| 1454 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) |
| 1455 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | #define pci_resource_len(dev,bar) \ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1457 | ((pci_resource_start((dev), (bar)) == 0 && \ |
| 1458 | pci_resource_end((dev), (bar)) == \ |
| 1459 | pci_resource_start((dev), (bar))) ? 0 : \ |
| 1460 | \ |
| 1461 | (pci_resource_end((dev), (bar)) - \ |
| 1462 | pci_resource_start((dev), (bar)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
| 1464 | /* Similar to the helpers above, these manipulate per-pci_dev |
| 1465 | * driver-specific data. They are really just a wrapper around |
| 1466 | * the generic device structure functions of these calls. |
| 1467 | */ |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1468 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | { |
| 1470 | return dev_get_drvdata(&pdev->dev); |
| 1471 | } |
| 1472 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1473 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | { |
| 1475 | dev_set_drvdata(&pdev->dev, data); |
| 1476 | } |
| 1477 | |
| 1478 | /* If you want to know what to call your pci_dev, ask this function. |
| 1479 | * Again, it's a wrapper around the generic device. |
| 1480 | */ |
Alexey Zaytsev | 2fc90f6 | 2009-06-24 16:22:30 +0400 | [diff] [blame] | 1481 | static inline const char *pci_name(const struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | { |
Greg KH | c6c4f07 | 2008-07-03 09:49:39 -0700 | [diff] [blame] | 1483 | return dev_name(&pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | } |
| 1485 | |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 1486 | |
| 1487 | /* Some archs don't want to expose struct resource to userland as-is |
| 1488 | * in sysfs and /proc |
| 1489 | */ |
| 1490 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER |
| 1491 | 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] | 1492 | const struct resource *rsrc, resource_size_t *start, |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 1493 | resource_size_t *end) |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 1494 | { |
| 1495 | *start = rsrc->start; |
| 1496 | *end = rsrc->end; |
| 1497 | } |
| 1498 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
| 1499 | |
| 1500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | /* |
| 1502 | * The world is not perfect and supplies us with broken PCI devices. |
| 1503 | * For at least a part of these bugs we need a work-around, so both |
| 1504 | * generic (drivers/pci/quirks.c) and per-architecture code can define |
| 1505 | * fixup hooks to be called for particular buggy devices. |
| 1506 | */ |
| 1507 | |
| 1508 | struct pci_fixup { |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1509 | u16 vendor; /* You can use PCI_ANY_ID here of course */ |
| 1510 | u16 device; /* You can use PCI_ANY_ID here of course */ |
| 1511 | u32 class; /* You can use PCI_ANY_ID here too */ |
| 1512 | unsigned int class_shift; /* should be 0, 8, 16 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | void (*hook)(struct pci_dev *dev); |
| 1514 | }; |
| 1515 | |
| 1516 | enum pci_fixup_pass { |
| 1517 | pci_fixup_early, /* Before probing BARs */ |
| 1518 | pci_fixup_header, /* After reading configuration header */ |
| 1519 | pci_fixup_final, /* Final phase of device fixups */ |
| 1520 | pci_fixup_enable, /* pci_enable_device() time */ |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1521 | pci_fixup_resume, /* pci_device_resume() */ |
Andreas Noever | 7d2a01b | 2014-06-03 22:04:09 +0200 | [diff] [blame] | 1522 | pci_fixup_suspend, /* pci_device_suspend() */ |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1523 | pci_fixup_resume_early, /* pci_device_resume_early() */ |
Andreas Noever | 7d2a01b | 2014-06-03 22:04:09 +0200 | [diff] [blame] | 1524 | pci_fixup_suspend_late, /* pci_device_suspend_late() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | }; |
| 1526 | |
| 1527 | /* Anonymous variables would be nice... */ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1528 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
| 1529 | class_shift, hook) \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1530 | static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1531 | __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
| 1532 | = { vendor, device, class, class_shift, hook }; |
| 1533 | |
| 1534 | #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ |
| 1535 | class_shift, hook) \ |
| 1536 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1537 | hook, vendor, device, class, class_shift, hook) |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1538 | #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \ |
| 1539 | class_shift, hook) \ |
| 1540 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1541 | hook, vendor, device, class, class_shift, hook) |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1542 | #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ |
| 1543 | class_shift, hook) \ |
| 1544 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1545 | hook, vendor, device, class, class_shift, hook) |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1546 | #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ |
| 1547 | class_shift, hook) \ |
| 1548 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1549 | hook, vendor, device, class, class_shift, hook) |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1550 | #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ |
| 1551 | class_shift, hook) \ |
| 1552 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1553 | resume##hook, vendor, device, class, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1554 | class_shift, hook) |
| 1555 | #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ |
| 1556 | class_shift, hook) \ |
| 1557 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1558 | resume_early##hook, vendor, device, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1559 | class, class_shift, hook) |
| 1560 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ |
| 1561 | class_shift, hook) \ |
| 1562 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1563 | suspend##hook, vendor, device, class, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1564 | class_shift, hook) |
Andreas Noever | 7d2a01b | 2014-06-03 22:04:09 +0200 | [diff] [blame] | 1565 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND_LATE(vendor, device, class, \ |
| 1566 | class_shift, hook) \ |
| 1567 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
| 1568 | suspend_late##hook, vendor, device, \ |
| 1569 | class, class_shift, hook) |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
| 1572 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1573 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
| 1575 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1576 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
| 1578 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1579 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
| 1581 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1582 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 1583 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
| 1584 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1585 | resume##hook, vendor, device, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1586 | PCI_ANY_ID, 0, hook) |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1587 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
| 1588 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1589 | resume_early##hook, vendor, device, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1590 | PCI_ANY_ID, 0, hook) |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 1591 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
| 1592 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
Michal Marek | ecf61c7 | 2013-11-11 14:40:35 +0100 | [diff] [blame] | 1593 | suspend##hook, vendor, device, \ |
Yinghai Lu | f4ca5c6 | 2012-02-23 23:46:49 -0800 | [diff] [blame] | 1594 | PCI_ANY_ID, 0, hook) |
Andreas Noever | 7d2a01b | 2014-06-03 22:04:09 +0200 | [diff] [blame] | 1595 | #define DECLARE_PCI_FIXUP_SUSPEND_LATE(vendor, device, hook) \ |
| 1596 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
| 1597 | suspend_late##hook, vendor, device, \ |
| 1598 | PCI_ANY_ID, 0, hook) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | |
Rafael J. Wysocki | 93177a7 | 2010-01-02 22:57:24 +0100 | [diff] [blame] | 1600 | #ifdef CONFIG_PCI_QUIRKS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
Alex Williamson | ad80575 | 2012-06-11 05:27:07 +0000 | [diff] [blame] | 1602 | int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); |
Alex Williamson | 2c74424 | 2014-02-03 14:27:33 -0700 | [diff] [blame] | 1603 | void pci_dev_specific_enable_acs(struct pci_dev *dev); |
Rafael J. Wysocki | 93177a7 | 2010-01-02 22:57:24 +0100 | [diff] [blame] | 1604 | #else |
| 1605 | static inline void pci_fixup_device(enum pci_fixup_pass pass, |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1606 | struct pci_dev *dev) { } |
Alex Williamson | ad80575 | 2012-06-11 05:27:07 +0000 | [diff] [blame] | 1607 | static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, |
| 1608 | u16 acs_flags) |
| 1609 | { |
| 1610 | return -ENOTTY; |
| 1611 | } |
Alex Williamson | 2c74424 | 2014-02-03 14:27:33 -0700 | [diff] [blame] | 1612 | static inline void pci_dev_specific_enable_acs(struct pci_dev *dev) { } |
Rafael J. Wysocki | 93177a7 | 2010-01-02 22:57:24 +0100 | [diff] [blame] | 1613 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1615 | 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] | 1616 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
Greg Kroah-Hartman | 05cca6e | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 1617 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
Yinghai Lu | fb7ebfe | 2012-01-04 15:50:02 -0800 | [diff] [blame] | 1618 | int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
| 1619 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, |
Tejun Heo | 916fbfb | 2008-03-12 15:26:34 +0900 | [diff] [blame] | 1620 | const char *name); |
Yinghai Lu | fb7ebfe | 2012-01-04 15:50:02 -0800 | [diff] [blame] | 1621 | void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
Al Viro | 5ea8176 | 2007-02-11 15:41:31 +0000 | [diff] [blame] | 1622 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | extern int pci_pci_problems; |
Alan Cox | 236561e | 2006-09-30 23:27:03 -0700 | [diff] [blame] | 1624 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | #define PCIPCI_TRITON 2 |
| 1626 | #define PCIPCI_NATOMA 4 |
| 1627 | #define PCIPCI_VIAETBF 8 |
| 1628 | #define PCIPCI_VSFX 16 |
Alan Cox | 236561e | 2006-09-30 23:27:03 -0700 | [diff] [blame] | 1629 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
| 1630 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | |
Atsushi Nemoto | 4516a61 | 2007-02-05 16:36:06 -0800 | [diff] [blame] | 1632 | extern unsigned long pci_cardbus_io_size; |
| 1633 | extern unsigned long pci_cardbus_mem_size; |
Bill Pemberton | 15856ad | 2012-11-21 15:35:00 -0500 | [diff] [blame] | 1634 | extern u8 pci_dfl_cache_line_size; |
Jesse Barnes | ac1aa47 | 2009-10-26 13:20:44 -0700 | [diff] [blame] | 1635 | extern u8 pci_cache_line_size; |
Atsushi Nemoto | 4516a61 | 2007-02-05 16:36:06 -0800 | [diff] [blame] | 1636 | |
Eric W. Biederman | 2876048 | 2009-09-09 14:09:24 -0700 | [diff] [blame] | 1637 | extern unsigned long pci_hotplug_io_size; |
| 1638 | extern unsigned long pci_hotplug_mem_size; |
| 1639 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1640 | /* Architecture-specific versions may override these (weak) */ |
Adrian Bunk | 19792a0 | 2008-05-05 21:25:47 +0300 | [diff] [blame] | 1641 | void pcibios_disable_device(struct pci_dev *dev); |
Myron Stowe | cfce9fb | 2011-10-28 15:47:35 -0600 | [diff] [blame] | 1642 | void pcibios_set_master(struct pci_dev *dev); |
Adrian Bunk | 19792a0 | 2008-05-05 21:25:47 +0300 | [diff] [blame] | 1643 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
| 1644 | enum pcie_reset_state state); |
Matthew Garrett | eca0d46 | 2012-12-05 14:33:27 -0700 | [diff] [blame] | 1645 | int pcibios_add_device(struct pci_dev *dev); |
Sebastian Ott | 6ae32c5 | 2013-06-04 19:18:14 +0200 | [diff] [blame] | 1646 | void pcibios_release_device(struct pci_dev *dev); |
Hanjun Guo | a43ae58 | 2014-05-06 11:29:52 +0800 | [diff] [blame] | 1647 | void pcibios_penalize_isa_irq(int irq, int active); |
Michael Ellerman | 575e334 | 2007-05-08 12:03:07 +1000 | [diff] [blame] | 1648 | |
Sebastian Ott | 699c198 | 2013-08-20 16:41:02 +0200 | [diff] [blame] | 1649 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
| 1650 | extern struct dev_pm_ops pcibios_pm_ops; |
| 1651 | #endif |
| 1652 | |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1653 | #ifdef CONFIG_PCI_MMCONFIG |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1654 | void __init pci_mmcfg_early_init(void); |
| 1655 | void __init pci_mmcfg_late_init(void); |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1656 | #else |
Yinghai Lu | bb63b42 | 2008-02-28 23:56:50 -0800 | [diff] [blame] | 1657 | static inline void pci_mmcfg_early_init(void) { } |
Robert Hancock | 7752d5c | 2008-02-15 01:27:20 -0800 | [diff] [blame] | 1658 | static inline void pci_mmcfg_late_init(void) { } |
| 1659 | #endif |
| 1660 | |
Taku Izumi | 642c92d | 2012-10-30 15:26:18 +0900 | [diff] [blame] | 1661 | int pci_ext_cfg_avail(void); |
Andrew Patterson | 0ef5f8f | 2008-11-10 15:30:50 -0700 | [diff] [blame] | 1662 | |
Andrew Morton | 1684f5d | 2008-12-01 14:30:30 -0800 | [diff] [blame] | 1663 | void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
Arjan van de Ven | aa42d7c | 2008-09-28 16:36:11 -0700 | [diff] [blame] | 1664 | |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 1665 | #ifdef CONFIG_PCI_IOV |
Wei Yang | b07579c | 2015-03-25 16:23:48 +0800 | [diff] [blame] | 1666 | int pci_iov_virtfn_bus(struct pci_dev *dev, int id); |
| 1667 | int pci_iov_virtfn_devfn(struct pci_dev *dev, int id); |
| 1668 | |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1669 | int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); |
| 1670 | void pci_disable_sriov(struct pci_dev *dev); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1671 | int pci_num_vf(struct pci_dev *dev); |
Alexander Duyck | 5a8eb24 | 2013-04-25 04:42:29 +0000 | [diff] [blame] | 1672 | int pci_vfs_assigned(struct pci_dev *dev); |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1673 | int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
| 1674 | int pci_sriov_get_totalvfs(struct pci_dev *dev); |
Wei Yang | 0e6c912 | 2015-03-25 16:23:44 +0800 | [diff] [blame] | 1675 | resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno); |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 1676 | #else |
Wei Yang | b07579c | 2015-03-25 16:23:48 +0800 | [diff] [blame] | 1677 | static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id) |
| 1678 | { |
| 1679 | return -ENOSYS; |
| 1680 | } |
| 1681 | static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id) |
| 1682 | { |
| 1683 | return -ENOSYS; |
| 1684 | } |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 1685 | static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1686 | { return -ENODEV; } |
| 1687 | static inline void pci_disable_sriov(struct pci_dev *dev) { } |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1688 | static inline int pci_num_vf(struct pci_dev *dev) { return 0; } |
Alexander Duyck | 5a8eb24 | 2013-04-25 04:42:29 +0000 | [diff] [blame] | 1689 | static inline int pci_vfs_assigned(struct pci_dev *dev) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1690 | { return 0; } |
Donald Dutile | bff7315 | 2012-11-05 15:20:37 -0500 | [diff] [blame] | 1691 | static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1692 | { return 0; } |
Donald Dutile | bff7315 | 2012-11-05 15:20:37 -0500 | [diff] [blame] | 1693 | static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) |
Bjorn Helgaas | 2ee546c | 2014-01-13 17:15:01 -0700 | [diff] [blame] | 1694 | { return 0; } |
Wei Yang | 0e6c912 | 2015-03-25 16:23:44 +0800 | [diff] [blame] | 1695 | static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) |
| 1696 | { return 0; } |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 1697 | #endif |
| 1698 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 1699 | #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1700 | void pci_hp_create_module_link(struct pci_slot *pci_slot); |
| 1701 | void pci_hp_remove_module_link(struct pci_slot *pci_slot); |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 1702 | #endif |
| 1703 | |
Kenji Kaneshige | d7b7e60 | 2009-11-11 14:29:54 +0900 | [diff] [blame] | 1704 | /** |
| 1705 | * pci_pcie_cap - get the saved PCIe capability offset |
| 1706 | * @dev: PCI device |
| 1707 | * |
| 1708 | * PCIe capability offset is calculated at PCI device initialization |
| 1709 | * time and saved in the data structure. This function returns saved |
| 1710 | * PCIe capability offset. Using this instead of pci_find_capability() |
| 1711 | * reduces unnecessary search in the PCI configuration space. If you |
| 1712 | * need to calculate PCIe capability offset from raw device for some |
| 1713 | * reasons, please use pci_find_capability() instead. |
| 1714 | */ |
| 1715 | static inline int pci_pcie_cap(struct pci_dev *dev) |
| 1716 | { |
| 1717 | return dev->pcie_cap; |
| 1718 | } |
| 1719 | |
Kenji Kaneshige | 7eb776c | 2009-11-11 14:35:22 +0900 | [diff] [blame] | 1720 | /** |
| 1721 | * pci_is_pcie - check if the PCI device is PCI Express capable |
| 1722 | * @dev: PCI device |
| 1723 | * |
Joe Perches | a895c28 | 2013-09-03 13:31:05 -0700 | [diff] [blame] | 1724 | * Returns: true if the PCI device is PCI Express capable, false otherwise. |
Kenji Kaneshige | 7eb776c | 2009-11-11 14:35:22 +0900 | [diff] [blame] | 1725 | */ |
| 1726 | static inline bool pci_is_pcie(struct pci_dev *dev) |
| 1727 | { |
Joe Perches | a895c28 | 2013-09-03 13:31:05 -0700 | [diff] [blame] | 1728 | return pci_pcie_cap(dev); |
Kenji Kaneshige | 7eb776c | 2009-11-11 14:35:22 +0900 | [diff] [blame] | 1729 | } |
| 1730 | |
Yijing Wang | 786e228 | 2012-07-24 17:20:02 +0800 | [diff] [blame] | 1731 | /** |
Myron Stowe | 7c9c003 | 2013-01-25 17:55:39 -0700 | [diff] [blame] | 1732 | * pcie_caps_reg - get the PCIe Capabilities Register |
| 1733 | * @dev: PCI device |
| 1734 | */ |
| 1735 | static inline u16 pcie_caps_reg(const struct pci_dev *dev) |
| 1736 | { |
| 1737 | return dev->pcie_flags_reg; |
| 1738 | } |
| 1739 | |
| 1740 | /** |
Yijing Wang | 786e228 | 2012-07-24 17:20:02 +0800 | [diff] [blame] | 1741 | * pci_pcie_type - get the PCIe device/port type |
| 1742 | * @dev: PCI device |
| 1743 | */ |
| 1744 | static inline int pci_pcie_type(const struct pci_dev *dev) |
| 1745 | { |
Myron Stowe | 1c531d8 | 2013-01-25 17:55:45 -0700 | [diff] [blame] | 1746 | return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
Yijing Wang | 786e228 | 2012-07-24 17:20:02 +0800 | [diff] [blame] | 1747 | } |
| 1748 | |
Chris Wright | 5d990b6 | 2009-12-04 12:15:21 -0800 | [diff] [blame] | 1749 | void pci_request_acs(void); |
Alex Williamson | ad80575 | 2012-06-11 05:27:07 +0000 | [diff] [blame] | 1750 | bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
| 1751 | bool pci_acs_path_enabled(struct pci_dev *start, |
| 1752 | struct pci_dev *end, u16 acs_flags); |
Matt Carlson | a2ce766 | 2010-02-26 14:04:39 +0000 | [diff] [blame] | 1753 | |
Matt Carlson | 7ad506f | 2010-02-26 14:04:40 +0000 | [diff] [blame] | 1754 | #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
Megan Kamiya | 63ddc0b | 2014-09-05 20:19:10 -0700 | [diff] [blame] | 1755 | #define PCI_VPD_LRDT_ID(x) ((x) | PCI_VPD_LRDT) |
Matt Carlson | 7ad506f | 2010-02-26 14:04:40 +0000 | [diff] [blame] | 1756 | |
| 1757 | /* Large Resource Data Type Tag Item Names */ |
| 1758 | #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ |
| 1759 | #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ |
| 1760 | #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ |
| 1761 | |
| 1762 | #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) |
| 1763 | #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) |
| 1764 | #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) |
| 1765 | |
| 1766 | /* Small Resource Data Type Tag Item Names */ |
| 1767 | #define PCI_VPD_STIN_END 0x78 /* End */ |
| 1768 | |
| 1769 | #define PCI_VPD_SRDT_END PCI_VPD_STIN_END |
| 1770 | |
| 1771 | #define PCI_VPD_SRDT_TIN_MASK 0x78 |
| 1772 | #define PCI_VPD_SRDT_LEN_MASK 0x07 |
| 1773 | |
| 1774 | #define PCI_VPD_LRDT_TAG_SIZE 3 |
| 1775 | #define PCI_VPD_SRDT_TAG_SIZE 1 |
Matt Carlson | a2ce766 | 2010-02-26 14:04:39 +0000 | [diff] [blame] | 1776 | |
Matt Carlson | e1d5bda | 2010-02-26 14:04:42 +0000 | [diff] [blame] | 1777 | #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
| 1778 | |
Matt Carlson | 4067a85 | 2010-02-26 14:04:43 +0000 | [diff] [blame] | 1779 | #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
| 1780 | #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" |
| 1781 | #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" |
Matt Carlson | d4894f3 | 2011-03-09 16:58:21 +0000 | [diff] [blame] | 1782 | #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
Matt Carlson | 4067a85 | 2010-02-26 14:04:43 +0000 | [diff] [blame] | 1783 | |
Matt Carlson | a2ce766 | 2010-02-26 14:04:39 +0000 | [diff] [blame] | 1784 | /** |
| 1785 | * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length |
| 1786 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag |
| 1787 | * |
| 1788 | * Returns the extracted Large Resource Data Type length. |
| 1789 | */ |
| 1790 | static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) |
| 1791 | { |
| 1792 | return (u16)lrdt[1] + ((u16)lrdt[2] << 8); |
| 1793 | } |
| 1794 | |
Matt Carlson | 7ad506f | 2010-02-26 14:04:40 +0000 | [diff] [blame] | 1795 | /** |
| 1796 | * pci_vpd_srdt_size - Extracts the Small Resource Data Type length |
| 1797 | * @lrdt: Pointer to the beginning of the Small Resource Data Type tag |
| 1798 | * |
| 1799 | * Returns the extracted Small Resource Data Type length. |
| 1800 | */ |
| 1801 | static inline u8 pci_vpd_srdt_size(const u8 *srdt) |
| 1802 | { |
| 1803 | return (*srdt) & PCI_VPD_SRDT_LEN_MASK; |
| 1804 | } |
| 1805 | |
Matt Carlson | b55ac1b | 2010-02-26 14:04:41 +0000 | [diff] [blame] | 1806 | /** |
Matt Carlson | e1d5bda | 2010-02-26 14:04:42 +0000 | [diff] [blame] | 1807 | * pci_vpd_info_field_size - Extracts the information field length |
| 1808 | * @lrdt: Pointer to the beginning of an information field header |
| 1809 | * |
| 1810 | * Returns the extracted information field length. |
| 1811 | */ |
| 1812 | static inline u8 pci_vpd_info_field_size(const u8 *info_field) |
| 1813 | { |
| 1814 | return info_field[2]; |
| 1815 | } |
| 1816 | |
| 1817 | /** |
Matt Carlson | b55ac1b | 2010-02-26 14:04:41 +0000 | [diff] [blame] | 1818 | * pci_vpd_find_tag - Locates the Resource Data Type tag provided |
| 1819 | * @buf: Pointer to buffered vpd data |
| 1820 | * @off: The offset into the buffer at which to begin the search |
| 1821 | * @len: The length of the vpd buffer |
| 1822 | * @rdt: The Resource Data Type to search for |
| 1823 | * |
| 1824 | * Returns the index where the Resource Data Type was found or |
| 1825 | * -ENOENT otherwise. |
| 1826 | */ |
| 1827 | int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); |
| 1828 | |
Matt Carlson | 4067a85 | 2010-02-26 14:04:43 +0000 | [diff] [blame] | 1829 | /** |
| 1830 | * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD |
| 1831 | * @buf: Pointer to buffered vpd data |
| 1832 | * @off: The offset into the buffer at which to begin the search |
| 1833 | * @len: The length of the buffer area, relative to off, in which to search |
| 1834 | * @kw: The keyword to search for |
| 1835 | * |
| 1836 | * Returns the index where the information field keyword was found or |
| 1837 | * -ENOENT otherwise. |
| 1838 | */ |
| 1839 | int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, |
| 1840 | unsigned int len, const char *kw); |
| 1841 | |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 1842 | /* PCI <-> OF binding helpers */ |
| 1843 | #ifdef CONFIG_OF |
| 1844 | struct device_node; |
Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 1845 | void pci_set_of_node(struct pci_dev *dev); |
| 1846 | void pci_release_of_node(struct pci_dev *dev); |
| 1847 | void pci_set_bus_of_node(struct pci_bus *bus); |
| 1848 | void pci_release_bus_of_node(struct pci_bus *bus); |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 1849 | |
| 1850 | /* Arch may override this (weak) */ |
Bjorn Helgaas | 723ec4d | 2013-04-17 10:31:34 -0600 | [diff] [blame] | 1851 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 1852 | |
John Crispin | 3df425f | 2012-04-12 17:33:07 +0200 | [diff] [blame] | 1853 | static inline struct device_node * |
| 1854 | pci_device_to_OF_node(const struct pci_dev *pdev) |
Benjamin Herrenschmidt | 64099d9 | 2011-04-07 13:09:47 +1000 | [diff] [blame] | 1855 | { |
| 1856 | return pdev ? pdev->dev.of_node : NULL; |
| 1857 | } |
| 1858 | |
Benjamin Herrenschmidt | ef3b4f8 | 2011-04-11 11:34:33 +1000 | [diff] [blame] | 1859 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
| 1860 | { |
| 1861 | return bus ? bus->dev.of_node : NULL; |
| 1862 | } |
| 1863 | |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 1864 | #else /* CONFIG_OF */ |
| 1865 | static inline void pci_set_of_node(struct pci_dev *dev) { } |
| 1866 | static inline void pci_release_of_node(struct pci_dev *dev) { } |
| 1867 | static inline void pci_set_bus_of_node(struct pci_bus *bus) { } |
| 1868 | static inline void pci_release_bus_of_node(struct pci_bus *bus) { } |
Kevin Hao | f0b66a2 | 2015-02-03 09:29:52 -0600 | [diff] [blame] | 1869 | static inline struct device_node * |
| 1870 | pci_device_to_OF_node(const struct pci_dev *pdev) { return NULL; } |
Benjamin Herrenschmidt | 98d9f30c8 | 2011-04-11 11:37:07 +1000 | [diff] [blame] | 1871 | #endif /* CONFIG_OF */ |
| 1872 | |
Gavin Shan | eb740b5 | 2012-02-27 20:04:04 +0000 | [diff] [blame] | 1873 | #ifdef CONFIG_EEH |
| 1874 | static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) |
| 1875 | { |
| 1876 | return pdev->dev.archdata.edev; |
| 1877 | } |
| 1878 | #endif |
| 1879 | |
Alex Williamson | c25dc82 | 2014-05-22 17:07:30 -0600 | [diff] [blame] | 1880 | int pci_for_each_dma_alias(struct pci_dev *pdev, |
| 1881 | int (*fn)(struct pci_dev *pdev, |
| 1882 | u16 alias, void *data), void *data); |
| 1883 | |
Ethan Zhao | ce05298 | 2014-09-09 10:21:25 +0800 | [diff] [blame] | 1884 | /* helper functions for operation of device flag */ |
| 1885 | static inline void pci_set_dev_assigned(struct pci_dev *pdev) |
| 1886 | { |
| 1887 | pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED; |
| 1888 | } |
| 1889 | static inline void pci_clear_dev_assigned(struct pci_dev *pdev) |
| 1890 | { |
| 1891 | pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED; |
| 1892 | } |
| 1893 | static inline bool pci_is_dev_assigned(struct pci_dev *pdev) |
| 1894 | { |
| 1895 | return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED; |
| 1896 | } |
Alex Williamson | 19bdb6e | 2015-05-26 15:11:44 -0600 | [diff] [blame] | 1897 | |
| 1898 | /** |
| 1899 | * pci_ari_enabled - query ARI forwarding status |
| 1900 | * @bus: the PCI bus |
| 1901 | * |
| 1902 | * Returns true if ARI forwarding is enabled. |
| 1903 | */ |
| 1904 | static inline bool pci_ari_enabled(struct pci_bus *bus) |
| 1905 | { |
| 1906 | return bus->self && bus->self->ari_enabled; |
| 1907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | #endif /* LINUX_PCI_H */ |