Zhao, Yu | 557848c | 2008-10-13 19:18:07 +0800 | [diff] [blame] | 1 | #ifndef DRIVERS_PCI_H |
| 2 | #define DRIVERS_PCI_H |
| 3 | |
Yu Zhao | 74bb1bc | 2009-03-20 11:25:16 +0800 | [diff] [blame] | 4 | #include <linux/workqueue.h> |
| 5 | |
Zhao, Yu | 557848c | 2008-10-13 19:18:07 +0800 | [diff] [blame] | 6 | #define PCI_CFG_SPACE_SIZE 256 |
| 7 | #define PCI_CFG_SPACE_EXP_SIZE 4096 |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | /* Functions internal to the PCI core code */ |
| 10 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 11 | extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); |
| 13 | extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 14 | #ifndef CONFIG_DMI |
| 15 | static inline void pci_create_firmware_label_files(struct pci_dev *pdev) |
Narendra K | b879743f | 2010-08-02 07:44:29 -0500 | [diff] [blame] | 16 | { return; } |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 17 | static inline void pci_remove_firmware_label_files(struct pci_dev *pdev) |
Narendra K | b879743f | 2010-08-02 07:44:29 -0500 | [diff] [blame] | 18 | { return; } |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 19 | #else |
| 20 | extern void pci_create_firmware_label_files(struct pci_dev *pdev); |
| 21 | extern void pci_remove_firmware_label_files(struct pci_dev *pdev); |
| 22 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | extern void pci_cleanup_rom(struct pci_dev *dev); |
Jesse Barnes | 9eff02e | 2008-10-24 10:32:33 -0700 | [diff] [blame] | 24 | #ifdef HAVE_PCI_MMAP |
Martin Wilck | 3b519e4 | 2010-11-10 11:03:21 +0100 | [diff] [blame] | 25 | enum pci_mmap_api { |
| 26 | PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */ |
| 27 | PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */ |
| 28 | }; |
Jesse Barnes | 9eff02e | 2008-10-24 10:32:33 -0700 | [diff] [blame] | 29 | extern int pci_mmap_fits(struct pci_dev *pdev, int resno, |
Martin Wilck | 3b519e4 | 2010-11-10 11:03:21 +0100 | [diff] [blame] | 30 | struct vm_area_struct *vmai, |
| 31 | enum pci_mmap_api mmap_api); |
Jesse Barnes | 9eff02e | 2008-10-24 10:32:33 -0700 | [diff] [blame] | 32 | #endif |
Michael S. Tsirkin | 711d577 | 2009-07-27 23:37:48 +0300 | [diff] [blame] | 33 | int pci_probe_reset_function(struct pci_dev *dev); |
Kumar Gala | ce5ccde | 2007-07-16 23:27:10 -0500 | [diff] [blame] | 34 | |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 35 | /** |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 36 | * struct pci_platform_pm_ops - Firmware PM callbacks |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 37 | * |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 38 | * @is_manageable: returns 'true' if given device is power manageable by the |
| 39 | * platform firmware |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 40 | * |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 41 | * @set_state: invokes the platform firmware to set the device's power state |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 42 | * |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 43 | * @choose_state: returns PCI power state of given device preferred by the |
| 44 | * platform; to be used during system-wide transitions from a |
| 45 | * sleeping state to the working state and vice versa |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 46 | * |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 47 | * @can_wakeup: returns 'true' if given device is capable of waking up the |
| 48 | * system from a sleeping state |
Rafael J. Wysocki | eb9d0fe | 2008-07-07 03:34:48 +0200 | [diff] [blame] | 49 | * |
Randy Dunlap | b33bfde | 2009-01-09 17:04:26 -0800 | [diff] [blame] | 50 | * @sleep_wake: enables/disables the system wake up capability of given device |
Rafael J. Wysocki | eb9d0fe | 2008-07-07 03:34:48 +0200 | [diff] [blame] | 51 | * |
Rafael J. Wysocki | b67ea76 | 2010-02-17 23:44:09 +0100 | [diff] [blame] | 52 | * @run_wake: enables/disables the platform to generate run-time wake-up events |
| 53 | * for given device (the device's wake-up capability has to be |
| 54 | * enabled by @sleep_wake for this feature to work) |
| 55 | * |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 56 | * If given platform is generally capable of power managing PCI devices, all of |
| 57 | * these callbacks are mandatory. |
| 58 | */ |
| 59 | struct pci_platform_pm_ops { |
| 60 | bool (*is_manageable)(struct pci_dev *dev); |
| 61 | int (*set_state)(struct pci_dev *dev, pci_power_t state); |
| 62 | pci_power_t (*choose_state)(struct pci_dev *dev); |
Rafael J. Wysocki | eb9d0fe | 2008-07-07 03:34:48 +0200 | [diff] [blame] | 63 | bool (*can_wakeup)(struct pci_dev *dev); |
| 64 | int (*sleep_wake)(struct pci_dev *dev, bool enable); |
Rafael J. Wysocki | b67ea76 | 2010-02-17 23:44:09 +0100 | [diff] [blame] | 65 | int (*run_wake)(struct pci_dev *dev, bool enable); |
Rafael J. Wysocki | 961d912 | 2008-07-07 03:32:02 +0200 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops); |
Rafael J. Wysocki | 7341042 | 2009-01-07 13:07:15 +0100 | [diff] [blame] | 69 | extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state); |
Rafael J. Wysocki | fa58d30 | 2009-01-07 13:03:42 +0100 | [diff] [blame] | 70 | extern void pci_disable_enabled_device(struct pci_dev *dev); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 71 | extern int pci_finish_runtime_suspend(struct pci_dev *dev); |
Rafael J. Wysocki | b67ea76 | 2010-02-17 23:44:09 +0100 | [diff] [blame] | 72 | extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign); |
Rafael J. Wysocki | eb9d0fe | 2008-07-07 03:34:48 +0200 | [diff] [blame] | 73 | extern void pci_pm_init(struct pci_dev *dev); |
Jesse Barnes | eb9c39d | 2008-12-17 12:10:05 -0800 | [diff] [blame] | 74 | extern void platform_pci_wakeup_init(struct pci_dev *dev); |
Rafael J. Wysocki | 63f4898 | 2008-12-07 22:02:58 +0100 | [diff] [blame] | 75 | extern void pci_allocate_cap_save_buffers(struct pci_dev *dev); |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 76 | |
| 77 | static inline bool pci_is_bridge(struct pci_dev *pci_dev) |
| 78 | { |
| 79 | return !!(pci_dev->subordinate); |
| 80 | } |
David Shaohua Li | 0f64474 | 2005-03-19 00:15:48 -0500 | [diff] [blame] | 81 | |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 82 | extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); |
| 83 | extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); |
| 84 | extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); |
| 85 | extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); |
| 86 | extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); |
| 87 | extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); |
| 88 | |
Ben Hutchings | 94e6108 | 2008-03-05 16:52:39 +0000 | [diff] [blame] | 89 | struct pci_vpd_ops { |
Stephen Hemminger | 287d19c | 2008-12-18 09:17:16 -0800 | [diff] [blame] | 90 | ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf); |
| 91 | ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); |
Ben Hutchings | 94e6108 | 2008-03-05 16:52:39 +0000 | [diff] [blame] | 92 | void (*release)(struct pci_dev *dev); |
| 93 | }; |
| 94 | |
| 95 | struct pci_vpd { |
Benjamin Li | 99cb233 | 2008-07-02 10:59:04 -0700 | [diff] [blame] | 96 | unsigned int len; |
Stephen Hemminger | 287d19c | 2008-12-18 09:17:16 -0800 | [diff] [blame] | 97 | const struct pci_vpd_ops *ops; |
Ben Hutchings | 94e6108 | 2008-03-05 16:52:39 +0000 | [diff] [blame] | 98 | struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ |
| 99 | }; |
| 100 | |
| 101 | extern int pci_vpd_pci22_init(struct pci_dev *dev); |
| 102 | static inline void pci_vpd_release(struct pci_dev *dev) |
| 103 | { |
| 104 | if (dev->vpd) |
| 105 | dev->vpd->ops->release(dev); |
| 106 | } |
| 107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | /* PCI /proc functions */ |
| 109 | #ifdef CONFIG_PROC_FS |
| 110 | extern int pci_proc_attach_device(struct pci_dev *dev); |
| 111 | extern int pci_proc_detach_device(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | extern int pci_proc_detach_bus(struct pci_bus *bus); |
| 113 | #else |
| 114 | static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; } |
| 115 | static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; } |
| 117 | #endif |
| 118 | |
| 119 | /* Functions for PCI Hotplug drivers to use */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | extern unsigned int pci_do_scan_bus(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
Benjamin Herrenschmidt | f19aeb1 | 2008-10-03 19:49:32 +1000 | [diff] [blame] | 122 | #ifdef HAVE_PCI_LEGACY |
| 123 | extern void pci_create_legacy_files(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | extern void pci_remove_legacy_files(struct pci_bus *bus); |
Benjamin Herrenschmidt | f19aeb1 | 2008-10-03 19:49:32 +1000 | [diff] [blame] | 125 | #else |
| 126 | static inline void pci_create_legacy_files(struct pci_bus *bus) { return; } |
| 127 | static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; } |
| 128 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
| 130 | /* Lock for read/write access to pci device and bus lists */ |
Zhang Yanmin | d71374d | 2006-06-02 12:35:43 +0800 | [diff] [blame] | 131 | extern struct rw_semaphore pci_bus_sem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
Kristen Carlson Accardi | ffadcc2 | 2006-07-12 08:59:00 -0700 | [diff] [blame] | 133 | extern unsigned int pci_pm_d3_delay; |
Michael Ellerman | 88187df | 2007-01-25 19:34:07 +1100 | [diff] [blame] | 134 | |
Andrew Morton | 4b47b0e | 2005-08-16 15:16:05 -0700 | [diff] [blame] | 135 | #ifdef CONFIG_PCI_MSI |
Matthew Wilcox | 309e57d | 2006-03-05 22:33:34 -0700 | [diff] [blame] | 136 | void pci_no_msi(void); |
Michael Ellerman | 4aa9bc9 | 2007-04-05 17:19:10 +1000 | [diff] [blame] | 137 | extern void pci_msi_init_pci_dev(struct pci_dev *dev); |
Andrew Morton | 4b47b0e | 2005-08-16 15:16:05 -0700 | [diff] [blame] | 138 | #else |
Matthew Wilcox | 309e57d | 2006-03-05 22:33:34 -0700 | [diff] [blame] | 139 | static inline void pci_no_msi(void) { } |
Michael Ellerman | 4aa9bc9 | 2007-04-05 17:19:10 +1000 | [diff] [blame] | 140 | static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } |
Andrew Morton | 4b47b0e | 2005-08-16 15:16:05 -0700 | [diff] [blame] | 141 | #endif |
Michael Ellerman | 8fed4b6 | 2007-01-25 19:34:08 +1100 | [diff] [blame] | 142 | |
Kristen Carlson Accardi | ffadcc2 | 2006-07-12 08:59:00 -0700 | [diff] [blame] | 143 | static inline int pci_no_d1d2(struct pci_dev *dev) |
| 144 | { |
| 145 | unsigned int parent_dstates = 0; |
Andrew Morton | 4b47b0e | 2005-08-16 15:16:05 -0700 | [diff] [blame] | 146 | |
Kristen Carlson Accardi | ffadcc2 | 2006-07-12 08:59:00 -0700 | [diff] [blame] | 147 | if (dev->bus->self) |
| 148 | parent_dstates = dev->bus->self->no_d1d2; |
| 149 | return (dev->no_d1d2 || parent_dstates); |
| 150 | |
| 151 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | extern struct device_attribute pci_dev_attrs[]; |
Greg Kroah-Hartman | fd7d1ce | 2007-05-22 22:47:54 -0400 | [diff] [blame] | 153 | extern struct device_attribute dev_attr_cpuaffinity; |
Mike Travis | 93ff68a | 2008-09-06 05:46:42 -0700 | [diff] [blame] | 154 | extern struct device_attribute dev_attr_cpulistaffinity; |
Alex Chiang | 705b1aa | 2009-03-20 14:56:31 -0600 | [diff] [blame] | 155 | #ifdef CONFIG_HOTPLUG |
| 156 | extern struct bus_attribute pci_bus_attrs[]; |
| 157 | #else |
| 158 | #define pci_bus_attrs NULL |
| 159 | #endif |
| 160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | /** |
| 163 | * pci_match_one_device - Tell if a PCI device structure has a matching |
| 164 | * PCI device id structure |
| 165 | * @id: single PCI device id structure to match |
| 166 | * @dev: the PCI device structure to match against |
Greg Kroah-Hartman | 367b09f | 2008-01-30 15:21:33 -0800 | [diff] [blame] | 167 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | * Returns the matching pci_device_id structure or %NULL if there is no match. |
| 169 | */ |
| 170 | static inline const struct pci_device_id * |
| 171 | pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) |
| 172 | { |
| 173 | if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) && |
| 174 | (id->device == PCI_ANY_ID || id->device == dev->device) && |
| 175 | (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) && |
| 176 | (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) && |
| 177 | !((id->class ^ dev->class) & id->class_mask)) |
| 178 | return id; |
| 179 | return NULL; |
| 180 | } |
| 181 | |
Keshavamurthy, Anil S | 994a65e | 2007-10-21 16:41:46 -0700 | [diff] [blame] | 182 | struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 183 | |
| 184 | /* PCI slot sysfs helper code */ |
| 185 | #define to_pci_slot(s) container_of(s, struct pci_slot, kobj) |
| 186 | |
| 187 | extern struct kset *pci_slots_kset; |
| 188 | |
| 189 | struct pci_slot_attribute { |
| 190 | struct attribute attr; |
| 191 | ssize_t (*show)(struct pci_slot *, char *); |
| 192 | ssize_t (*store)(struct pci_slot *, const char *, size_t); |
| 193 | }; |
| 194 | #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) |
| 195 | |
Yu Zhao | 0b400c7 | 2008-11-22 02:40:40 +0800 | [diff] [blame] | 196 | enum pci_bar_type { |
| 197 | pci_bar_unknown, /* Standard PCI BAR probe */ |
| 198 | pci_bar_io, /* An io port BAR */ |
| 199 | pci_bar_mem32, /* A 32-bit memory BAR */ |
| 200 | pci_bar_mem64, /* A 64-bit memory BAR */ |
| 201 | }; |
| 202 | |
Yu Zhao | 480b93b | 2009-03-20 11:25:14 +0800 | [diff] [blame] | 203 | extern int pci_setup_device(struct pci_dev *dev); |
Yu Zhao | 0b400c7 | 2008-11-22 02:40:40 +0800 | [diff] [blame] | 204 | extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, |
| 205 | struct resource *res, unsigned int reg); |
Yu Zhao | 613e7ed | 2008-11-22 02:41:27 +0800 | [diff] [blame] | 206 | extern int pci_resource_bar(struct pci_dev *dev, int resno, |
| 207 | enum pci_bar_type *type); |
Yu Zhao | 876e501 | 2008-11-22 02:42:35 +0800 | [diff] [blame] | 208 | extern int pci_bus_add_child(struct pci_bus *bus); |
Yu Zhao | 58c3a72 | 2008-10-14 14:02:53 +0800 | [diff] [blame] | 209 | extern void pci_enable_ari(struct pci_dev *dev); |
| 210 | /** |
| 211 | * pci_ari_enabled - query ARI forwarding status |
Yu Zhao | 6a49d812 | 2008-11-22 02:38:21 +0800 | [diff] [blame] | 212 | * @bus: the PCI bus |
Yu Zhao | 58c3a72 | 2008-10-14 14:02:53 +0800 | [diff] [blame] | 213 | * |
| 214 | * Returns 1 if ARI forwarding is enabled, or 0 if not enabled; |
| 215 | */ |
Yu Zhao | 6a49d812 | 2008-11-22 02:38:21 +0800 | [diff] [blame] | 216 | static inline int pci_ari_enabled(struct pci_bus *bus) |
Yu Zhao | 58c3a72 | 2008-10-14 14:02:53 +0800 | [diff] [blame] | 217 | { |
Yu Zhao | 6a49d812 | 2008-11-22 02:38:21 +0800 | [diff] [blame] | 218 | return bus->self && bus->self->ari_enabled; |
Yu Zhao | 58c3a72 | 2008-10-14 14:02:53 +0800 | [diff] [blame] | 219 | } |
| 220 | |
Yuji Shimada | 32a9a68 | 2009-03-16 17:13:39 +0900 | [diff] [blame] | 221 | #ifdef CONFIG_PCI_QUIRKS |
| 222 | extern int pci_is_reassigndev(struct pci_dev *dev); |
| 223 | resource_size_t pci_specified_resource_alignment(struct pci_dev *dev); |
| 224 | extern void pci_disable_bridge_window(struct pci_dev *dev); |
| 225 | #endif |
| 226 | |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 227 | /* Single Root I/O Virtualization */ |
| 228 | struct pci_sriov { |
| 229 | int pos; /* capability position */ |
| 230 | int nres; /* number of resources */ |
| 231 | u32 cap; /* SR-IOV Capabilities */ |
| 232 | u16 ctrl; /* SR-IOV Control */ |
| 233 | u16 total; /* total VFs associated with the PF */ |
Yu Zhao | dd7cc44 | 2009-03-20 11:25:15 +0800 | [diff] [blame] | 234 | u16 initial; /* initial VFs associated with the PF */ |
| 235 | u16 nr_virtfn; /* number of VFs available */ |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 236 | u16 offset; /* first VF Routing ID offset */ |
| 237 | u16 stride; /* following VF stride */ |
| 238 | u32 pgsz; /* page size for BAR alignment */ |
| 239 | u8 link; /* Function Dependency Link */ |
| 240 | struct pci_dev *dev; /* lowest numbered PF */ |
| 241 | struct pci_dev *self; /* this PF */ |
| 242 | struct mutex lock; /* lock for VF bus */ |
Yu Zhao | 74bb1bc | 2009-03-20 11:25:16 +0800 | [diff] [blame] | 243 | struct work_struct mtask; /* VF Migration task */ |
| 244 | u8 __iomem *mstate; /* VF Migration State Array */ |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 245 | }; |
| 246 | |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 247 | /* Address Translation Service */ |
| 248 | struct pci_ats { |
| 249 | int pos; /* capability position */ |
| 250 | int stu; /* Smallest Translation Unit */ |
| 251 | int qdep; /* Invalidate Queue Depth */ |
Yu Zhao | e277d2f | 2009-05-18 13:51:33 +0800 | [diff] [blame] | 252 | int ref_cnt; /* Physical Function reference count */ |
Bill Pemberton | 8356dda | 2010-04-30 09:34:28 -0400 | [diff] [blame] | 253 | unsigned int is_enabled:1; /* Enable bit is set */ |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 254 | }; |
| 255 | |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 256 | #ifdef CONFIG_PCI_IOV |
| 257 | extern int pci_iov_init(struct pci_dev *dev); |
| 258 | extern void pci_iov_release(struct pci_dev *dev); |
| 259 | extern int pci_iov_resource_bar(struct pci_dev *dev, int resno, |
| 260 | enum pci_bar_type *type); |
Cam Macdonell | 0e52247 | 2010-09-07 17:25:20 -0700 | [diff] [blame] | 261 | extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, |
| 262 | int resno); |
Yu Zhao | 8c5cdb6 | 2009-03-20 11:25:12 +0800 | [diff] [blame] | 263 | extern void pci_restore_iov_state(struct pci_dev *dev); |
Yu Zhao | a28724b | 2009-03-20 11:25:13 +0800 | [diff] [blame] | 264 | extern int pci_iov_bus_range(struct pci_bus *bus); |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 265 | |
| 266 | extern int pci_enable_ats(struct pci_dev *dev, int ps); |
| 267 | extern void pci_disable_ats(struct pci_dev *dev); |
| 268 | extern int pci_ats_queue_depth(struct pci_dev *dev); |
| 269 | /** |
| 270 | * pci_ats_enabled - query the ATS status |
| 271 | * @dev: the PCI device |
| 272 | * |
| 273 | * Returns 1 if ATS capability is enabled, or 0 if not. |
| 274 | */ |
| 275 | static inline int pci_ats_enabled(struct pci_dev *dev) |
| 276 | { |
Yu Zhao | e277d2f | 2009-05-18 13:51:33 +0800 | [diff] [blame] | 277 | return dev->ats && dev->ats->is_enabled; |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 278 | } |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 279 | #else |
| 280 | static inline int pci_iov_init(struct pci_dev *dev) |
| 281 | { |
| 282 | return -ENODEV; |
| 283 | } |
| 284 | static inline void pci_iov_release(struct pci_dev *dev) |
| 285 | |
| 286 | { |
| 287 | } |
| 288 | static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno, |
| 289 | enum pci_bar_type *type) |
| 290 | { |
| 291 | return 0; |
| 292 | } |
Yu Zhao | 8c5cdb6 | 2009-03-20 11:25:12 +0800 | [diff] [blame] | 293 | static inline void pci_restore_iov_state(struct pci_dev *dev) |
| 294 | { |
| 295 | } |
Yu Zhao | a28724b | 2009-03-20 11:25:13 +0800 | [diff] [blame] | 296 | static inline int pci_iov_bus_range(struct pci_bus *bus) |
| 297 | { |
| 298 | return 0; |
| 299 | } |
Yu Zhao | 302b421 | 2009-05-18 13:51:32 +0800 | [diff] [blame] | 300 | |
| 301 | static inline int pci_enable_ats(struct pci_dev *dev, int ps) |
| 302 | { |
| 303 | return -ENODEV; |
| 304 | } |
| 305 | static inline void pci_disable_ats(struct pci_dev *dev) |
| 306 | { |
| 307 | } |
| 308 | static inline int pci_ats_queue_depth(struct pci_dev *dev) |
| 309 | { |
| 310 | return -ENODEV; |
| 311 | } |
| 312 | static inline int pci_ats_enabled(struct pci_dev *dev) |
| 313 | { |
| 314 | return 0; |
| 315 | } |
Yu Zhao | d1b054d | 2009-03-20 11:25:11 +0800 | [diff] [blame] | 316 | #endif /* CONFIG_PCI_IOV */ |
| 317 | |
Cam Macdonell | 0e52247 | 2010-09-07 17:25:20 -0700 | [diff] [blame] | 318 | static inline resource_size_t pci_resource_alignment(struct pci_dev *dev, |
Chris Wright | 6faf17f | 2009-08-28 13:00:06 -0700 | [diff] [blame] | 319 | struct resource *res) |
| 320 | { |
| 321 | #ifdef CONFIG_PCI_IOV |
| 322 | int resno = res - dev->resource; |
| 323 | |
| 324 | if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END) |
| 325 | return pci_sriov_resource_alignment(dev, resno); |
| 326 | #endif |
| 327 | return resource_alignment(res); |
| 328 | } |
| 329 | |
Allen Kay | ae21ee6 | 2009-10-07 10:27:17 -0700 | [diff] [blame] | 330 | extern void pci_enable_acs(struct pci_dev *dev); |
| 331 | |
Dexuan Cui | b9c3b26 | 2009-12-07 13:03:21 +0800 | [diff] [blame] | 332 | struct pci_dev_reset_methods { |
| 333 | u16 vendor; |
| 334 | u16 device; |
| 335 | int (*reset)(struct pci_dev *dev, int probe); |
| 336 | }; |
| 337 | |
Rafael J. Wysocki | 93177a7 | 2010-01-02 22:57:24 +0100 | [diff] [blame] | 338 | #ifdef CONFIG_PCI_QUIRKS |
Rafael J. Wysocki | 5b889bf | 2009-12-31 19:06:35 +0100 | [diff] [blame] | 339 | extern int pci_dev_specific_reset(struct pci_dev *dev, int probe); |
Rafael J. Wysocki | 93177a7 | 2010-01-02 22:57:24 +0100 | [diff] [blame] | 340 | #else |
| 341 | static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe) |
| 342 | { |
| 343 | return -ENOTTY; |
| 344 | } |
| 345 | #endif |
Dexuan Cui | b9c3b26 | 2009-12-07 13:03:21 +0800 | [diff] [blame] | 346 | |
Zhao, Yu | 557848c | 2008-10-13 19:18:07 +0800 | [diff] [blame] | 347 | #endif /* DRIVERS_PCI_H */ |