blob: 6e0d1528d471c7970613680f88333480389b6ef4 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Zhao, Yu557848c2008-10-13 19:18:07 +08002#ifndef DRIVERS_PCI_H
3#define DRIVERS_PCI_H
4
Wei Yangfff905f2015-06-30 09:16:41 +08005#define PCI_FIND_CAP_TTL 48
6
Lukas Wunner8531e282017-03-10 21:23:45 +01007#define PCI_VSEC_ID_INTEL_TBT 0x1234 /* Thunderbolt */
8
Jacob Keller343e51a2013-07-31 06:53:16 +00009extern const unsigned char pcie_link_speed[];
Sinan Kaya11eb0e0e2018-06-04 22:16:09 -040010extern bool pci_early_dump;
Jacob Keller343e51a2013-07-31 06:53:16 +000011
Yinghai Lu7a1562d2014-11-11 12:09:46 -080012bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014/* Functions internal to the PCI core code */
15
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060016int pci_create_sysfs_dev_files(struct pci_dev *pdev);
17void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
Narendra_K@Dell.com60589892011-03-02 22:34:17 +053018#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
Narendra K911e1c92010-07-26 05:56:50 -050019static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
Narendra Kb879743f2010-08-02 07:44:29 -050020{ return; }
Narendra K911e1c92010-07-26 05:56:50 -050021static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
Narendra Kb879743f2010-08-02 07:44:29 -050022{ return; }
Narendra K911e1c92010-07-26 05:56:50 -050023#else
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060024void pci_create_firmware_label_files(struct pci_dev *pdev);
25void pci_remove_firmware_label_files(struct pci_dev *pdev);
Narendra K911e1c92010-07-26 05:56:50 -050026#endif
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060027void pci_cleanup_rom(struct pci_dev *dev);
David Woodhousef7195822017-04-12 13:25:59 +010028
Martin Wilck3b519e42010-11-10 11:03:21 +010029enum pci_mmap_api {
30 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
31 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
32};
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060033int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
34 enum pci_mmap_api mmap_api);
David Woodhousef7195822017-04-12 13:25:59 +010035
Michael S. Tsirkin711d5772009-07-27 23:37:48 +030036int pci_probe_reset_function(struct pci_dev *dev);
Sinan Kaya381634c2018-07-19 18:04:11 -050037int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
Kumar Galace5ccde2007-07-16 23:27:10 -050038
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020039/**
Randy Dunlapb33bfde2009-01-09 17:04:26 -080040 * struct pci_platform_pm_ops - Firmware PM callbacks
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020041 *
Randy Dunlapb33bfde2009-01-09 17:04:26 -080042 * @is_manageable: returns 'true' if given device is power manageable by the
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -060043 * platform firmware
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020044 *
Randy Dunlapb33bfde2009-01-09 17:04:26 -080045 * @set_state: invokes the platform firmware to set the device's power state
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020046 *
Lukas Wunnercc7cc022016-09-18 05:39:20 +020047 * @get_state: queries the platform firmware for a device's current power state
48 *
Randy Dunlapb33bfde2009-01-09 17:04:26 -080049 * @choose_state: returns PCI power state of given device preferred by the
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -060050 * platform; to be used during system-wide transitions from a
51 * sleeping state to the working state and vice versa
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020052 *
Rafael J. Wysocki08476842017-06-24 01:57:35 +020053 * @set_wakeup: enables/disables wakeup capability for the device
Rafael J. Wysockib67ea762010-02-17 23:44:09 +010054 *
Rafael J. Wysockibac2a902015-01-21 02:17:42 +010055 * @need_resume: returns 'true' if the given device (which is currently
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -060056 * suspended) needs to be resumed to be configured for system
57 * wakeup.
Rafael J. Wysockibac2a902015-01-21 02:17:42 +010058 *
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020059 * If given platform is generally capable of power managing PCI devices, all of
60 * these callbacks are mandatory.
61 */
62struct pci_platform_pm_ops {
63 bool (*is_manageable)(struct pci_dev *dev);
64 int (*set_state)(struct pci_dev *dev, pci_power_t state);
Lukas Wunnercc7cc022016-09-18 05:39:20 +020065 pci_power_t (*get_state)(struct pci_dev *dev);
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020066 pci_power_t (*choose_state)(struct pci_dev *dev);
Rafael J. Wysocki08476842017-06-24 01:57:35 +020067 int (*set_wakeup)(struct pci_dev *dev, bool enable);
Rafael J. Wysockibac2a902015-01-21 02:17:42 +010068 bool (*need_resume)(struct pci_dev *dev);
Rafael J. Wysocki961d9122008-07-07 03:32:02 +020069};
70
Julia Lawall299f2ff2015-12-06 17:33:45 +010071int pci_set_platform_pm(const struct pci_platform_pm_ops *ops);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060072void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
73void pci_power_up(struct pci_dev *dev);
74void pci_disable_enabled_device(struct pci_dev *dev);
75int pci_finish_runtime_suspend(struct pci_dev *dev);
Bjorn Helgaasdcb04532018-03-09 11:06:53 -060076void pcie_clear_root_pme_status(struct pci_dev *dev);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060077int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
Rafael J. Wysocki0ce3fca2017-07-12 03:05:39 +020078void pci_pme_restore(struct pci_dev *dev);
Rafael J. Wysockibac2a902015-01-21 02:17:42 +010079bool pci_dev_keep_suspended(struct pci_dev *dev);
Rafael J. Wysocki2cef5482015-09-30 01:10:24 +020080void pci_dev_complete_resume(struct pci_dev *pci_dev);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060081void pci_config_pm_runtime_get(struct pci_dev *dev);
82void pci_config_pm_runtime_put(struct pci_dev *dev);
83void pci_pm_init(struct pci_dev *dev);
Sean O. Stalley938174e2015-10-29 17:35:39 -050084void pci_ea_init(struct pci_dev *dev);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -060085void pci_allocate_cap_save_buffers(struct pci_dev *dev);
Yinghai Luf796841e2012-02-11 00:18:30 -080086void pci_free_cap_save_buffers(struct pci_dev *dev);
Lukas Wunnerc6a63302016-10-28 10:52:06 +020087bool pci_bridge_d3_possible(struct pci_dev *dev);
Lukas Wunner1ed276a2016-10-28 10:52:06 +020088void pci_bridge_d3_update(struct pci_dev *dev);
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +010089
Rafael J. Wysockib6e335a2010-12-29 13:21:23 +010090static inline void pci_wakeup_event(struct pci_dev *dev)
91{
92 /* Wait 100 ms before the system can be put into a sleep state. */
93 pm_wakeup_event(&dev->dev, 100);
94}
95
Yijing Wang326c1cd2014-05-04 12:23:36 +080096static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +010097{
98 return !!(pci_dev->subordinate);
99}
David Shaohua Li0f644742005-03-19 00:15:48 -0500100
Mika Westerberg9d26d3a2016-06-02 11:17:12 +0300101static inline bool pci_power_manageable(struct pci_dev *pci_dev)
102{
103 /*
104 * Currently we allow normal PCI devices and PCI bridges transition
105 * into D3 if their bridge_d3 is set.
106 */
107 return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
108}
109
Bjorn Helgaasf1cd93f2016-02-22 13:58:37 -0600110int pci_vpd_init(struct pci_dev *dev);
Bjorn Helgaas64379072016-02-22 13:58:06 -0600111void pci_vpd_release(struct pci_dev *dev);
Bjorn Helgaasb1c615c2018-03-19 13:06:17 -0500112void pcie_vpd_create_sysfs_dev_files(struct pci_dev *dev);
113void pcie_vpd_remove_sysfs_dev_files(struct pci_dev *dev);
Ben Hutchings94e61082008-03-05 16:52:39 +0000114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115/* PCI /proc functions */
116#ifdef CONFIG_PROC_FS
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600117int pci_proc_attach_device(struct pci_dev *dev);
118int pci_proc_detach_device(struct pci_dev *dev);
119int pci_proc_detach_bus(struct pci_bus *bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#else
121static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
122static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
124#endif
125
126/* Functions for PCI Hotplug drivers to use */
Yinghai Lua8e4b9c2012-05-18 13:46:34 -0600127int pci_hp_add_bridge(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Benjamin Herrenschmidtf19aeb12008-10-03 19:49:32 +1000129#ifdef HAVE_PCI_LEGACY
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600130void pci_create_legacy_files(struct pci_bus *bus);
131void pci_remove_legacy_files(struct pci_bus *bus);
Benjamin Herrenschmidtf19aeb12008-10-03 19:49:32 +1000132#else
133static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
134static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
135#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137/* Lock for read/write access to pci device and bus lists */
Zhang Yanmind71374d2006-06-02 12:35:43 +0800138extern struct rw_semaphore pci_bus_sem;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
Jan Kiszkaa2e27782011-11-04 09:46:00 +0100140extern raw_spinlock_t pci_lock;
141
Kristen Carlson Accardiffadcc22006-07-12 08:59:00 -0700142extern unsigned int pci_pm_d3_delay;
Michael Ellerman88187df2007-01-25 19:34:07 +1100143
Andrew Morton4b47b0e2005-08-16 15:16:05 -0700144#ifdef CONFIG_PCI_MSI
Matthew Wilcox309e57d2006-03-05 22:33:34 -0700145void pci_no_msi(void);
Andrew Morton4b47b0e2005-08-16 15:16:05 -0700146#else
Matthew Wilcox309e57d2006-03-05 22:33:34 -0700147static inline void pci_no_msi(void) { }
Andrew Morton4b47b0e2005-08-16 15:16:05 -0700148#endif
Michael Ellerman8fed4b62007-01-25 19:34:08 +1100149
Michael S. Tsirkin6a25f5e2015-05-07 09:52:21 -0500150static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
151{
152 u16 control;
153
154 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
155 control &= ~PCI_MSI_FLAGS_ENABLE;
156 if (enable)
157 control |= PCI_MSI_FLAGS_ENABLE;
158 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
159}
160
161static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
162{
163 u16 ctrl;
164
165 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
166 ctrl &= ~clear;
167 ctrl |= set;
168 pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
169}
170
Yinghai Lub55438f2012-02-23 19:23:30 -0800171void pci_realloc_get_opt(char *);
Ram Paif483d392011-07-07 11:19:10 -0700172
Kristen Carlson Accardiffadcc22006-07-12 08:59:00 -0700173static inline int pci_no_d1d2(struct pci_dev *dev)
174{
175 unsigned int parent_dstates = 0;
Andrew Morton4b47b0e2005-08-16 15:16:05 -0700176
Kristen Carlson Accardiffadcc22006-07-12 08:59:00 -0700177 if (dev->bus->self)
178 parent_dstates = dev->bus->self->no_d1d2;
179 return (dev->no_d1d2 || parent_dstates);
180
181}
Greg Kroah-Hartman5136b2d2013-10-06 23:55:40 -0700182extern const struct attribute_group *pci_dev_groups[];
Greg Kroah-Hartman56039e62013-07-24 15:05:17 -0700183extern const struct attribute_group *pcibus_groups[];
Bhumika Goyal69f2dc22017-09-12 16:43:33 +0530184extern const struct device_type pci_dev_type;
Greg Kroah-Hartman0f49ba52013-10-07 14:51:02 -0600185extern const struct attribute_group *pci_bus_groups[];
Alex Chiang705b1aa2009-03-20 14:56:31 -0600186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
188/**
189 * pci_match_one_device - Tell if a PCI device structure has a matching
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -0600190 * PCI device id structure
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 * @id: single PCI device id structure to match
192 * @dev: the PCI device structure to match against
Greg Kroah-Hartman367b09f2008-01-30 15:21:33 -0800193 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 * Returns the matching pci_device_id structure or %NULL if there is no match.
195 */
196static inline const struct pci_device_id *
197pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
198{
199 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
200 (id->device == PCI_ANY_ID || id->device == dev->device) &&
201 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
202 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
203 !((id->class ^ dev->class) & id->class_mask))
204 return id;
205 return NULL;
206}
207
Alex Chiangf46753c2008-06-10 15:28:50 -0600208/* PCI slot sysfs helper code */
209#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
210
211extern struct kset *pci_slots_kset;
212
213struct pci_slot_attribute {
214 struct attribute attr;
215 ssize_t (*show)(struct pci_slot *, char *);
216 ssize_t (*store)(struct pci_slot *, const char *, size_t);
217};
218#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
219
Yu Zhao0b400c72008-11-22 02:40:40 +0800220enum pci_bar_type {
221 pci_bar_unknown, /* Standard PCI BAR probe */
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -0600222 pci_bar_io, /* An I/O port BAR */
Yu Zhao0b400c72008-11-22 02:40:40 +0800223 pci_bar_mem32, /* A 32-bit memory BAR */
224 pci_bar_mem64, /* A 64-bit memory BAR */
225};
226
Sinan Kaya62ce94a2017-07-12 00:04:14 -0400227int pci_configure_extended_tags(struct pci_dev *dev, void *ign);
Yinghai Luefdc87d2012-01-27 10:55:10 -0800228bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
229 int crs_timeout);
James Puthukattukaranaa667c62018-07-09 11:31:25 -0400230bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
231 int crs_timeout);
232int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *pl, int crs_timeout);
233
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600234int pci_setup_device(struct pci_dev *dev);
235int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
236 struct resource *res, unsigned int reg);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600237void pci_configure_ari(struct pci_dev *dev);
Bjorn Helgaas10874f5a2014-04-14 16:11:40 -0600238void __pci_bus_size_bridges(struct pci_bus *bus,
Jiang Liud66ecb72013-06-23 01:01:35 +0200239 struct list_head *realloc_head);
Bjorn Helgaas10874f5a2014-04-14 16:11:40 -0600240void __pci_bus_assign_resources(const struct pci_bus *bus,
241 struct list_head *realloc_head,
242 struct list_head *fail_head);
Yinghai Lu0f7e7ae2015-01-15 16:21:49 -0600243bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
Bjorn Helgaas939de1d2013-01-26 17:35:58 -0700244
Yinghai Lu2069ecf2012-02-15 21:40:31 -0800245void pci_reassigndev_resource_alignment(struct pci_dev *dev);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600246void pci_disable_bridge_window(struct pci_dev *dev);
Yuji Shimada32a9a6822009-03-16 17:13:39 +0900247
Tal Gilboa6cf57be2018-03-30 07:44:05 -0500248/* PCIe link information */
249#define PCIE_SPEED2STR(speed) \
250 ((speed) == PCIE_SPEED_16_0GT ? "16 GT/s" : \
251 (speed) == PCIE_SPEED_8_0GT ? "8 GT/s" : \
252 (speed) == PCIE_SPEED_5_0GT ? "5 GT/s" : \
253 (speed) == PCIE_SPEED_2_5GT ? "2.5 GT/s" : \
254 "Unknown speed")
255
Tal Gilboab852f632018-03-30 08:32:03 -0500256/* PCIe speed to Mb/s reduced by encoding overhead */
257#define PCIE_SPEED2MBS_ENC(speed) \
258 ((speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
259 (speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \
260 (speed) == PCIE_SPEED_5_0GT ? 5000*8/10 : \
261 (speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
262 0)
263
Tal Gilboa6cf57be2018-03-30 07:44:05 -0500264enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
Tal Gilboac70b65f2018-03-30 08:24:36 -0500265enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
Tal Gilboab852f632018-03-30 08:32:03 -0500266u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed,
267 enum pcie_link_width *width);
Alexandru Gagniuc2d1ce5e2018-08-06 18:25:35 -0500268void __pcie_print_link_status(struct pci_dev *dev, bool verbose);
Tal Gilboa6cf57be2018-03-30 07:44:05 -0500269
Yu Zhaod1b054d2009-03-20 11:25:11 +0800270/* Single Root I/O Virtualization */
271struct pci_sriov {
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -0600272 int pos; /* Capability position */
273 int nres; /* Number of resources */
274 u32 cap; /* SR-IOV Capabilities */
275 u16 ctrl; /* SR-IOV Control */
276 u16 total_VFs; /* Total VFs associated with the PF */
277 u16 initial_VFs; /* Initial VFs associated with the PF */
278 u16 num_VFs; /* Number of VFs available */
279 u16 offset; /* First VF Routing ID offset */
280 u16 stride; /* Following VF stride */
281 u16 vf_device; /* VF device ID */
282 u32 pgsz; /* Page size for BAR alignment */
283 u8 link; /* Function Dependency Link */
284 u8 max_VF_buses; /* Max buses consumed by VFs */
285 u16 driver_max_VFs; /* Max num VFs driver supports */
286 struct pci_dev *dev; /* Lowest numbered PF */
287 struct pci_dev *self; /* This PF */
KarimAllah Ahmedcf0921b2018-03-19 21:06:00 +0100288 u32 class; /* VF device */
289 u8 hdr_type; /* VF header type */
290 u16 subsystem_vendor; /* VF subsystem vendor */
291 u16 subsystem_device; /* VF subsystem device */
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -0600292 resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
293 bool drivers_autoprobe; /* Auto probing of VFs by driver */
Yu Zhaod1b054d2009-03-20 11:25:11 +0800294};
295
Keith Busch89ee9f72017-03-29 22:48:59 -0500296/* pci_dev priv_flags */
297#define PCI_DEV_DISCONNECTED 0
Hari Vyas44bda4b2018-07-03 14:35:41 +0530298#define PCI_DEV_ADDED 1
Keith Busch89ee9f72017-03-29 22:48:59 -0500299
300static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
301{
302 set_bit(PCI_DEV_DISCONNECTED, &dev->priv_flags);
303 return 0;
304}
305
306static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
307{
308 return test_bit(PCI_DEV_DISCONNECTED, &dev->priv_flags);
309}
310
Hari Vyas44bda4b2018-07-03 14:35:41 +0530311static inline void pci_dev_assign_added(struct pci_dev *dev, bool added)
312{
313 assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added);
314}
315
316static inline bool pci_dev_is_added(const struct pci_dev *dev)
317{
318 return test_bit(PCI_DEV_ADDED, &dev->priv_flags);
319}
320
Keith Busch1e451162018-07-19 16:16:55 -0500321#ifdef CONFIG_PCIEAER
322#include <linux/aer.h>
323
324#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
325
326struct aer_err_info {
327 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
328 int error_dev_num;
329
330 unsigned int id:16;
331
332 unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */
333 unsigned int __pad1:5;
334 unsigned int multi_error_valid:1;
335
336 unsigned int first_error:5;
337 unsigned int __pad2:2;
338 unsigned int tlp_header_valid:1;
339
340 unsigned int status; /* COR/UNCOR Error Status */
341 unsigned int mask; /* COR/UNCOR Error Mask */
342 struct aer_header_log_regs tlp; /* TLP Header */
343};
344
345int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info);
346void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
347#endif /* CONFIG_PCIEAER */
348
Hao, Xudong1900ca12011-12-17 21:24:40 +0800349#ifdef CONFIG_PCI_ATS
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600350void pci_restore_ats_state(struct pci_dev *dev);
Hao, Xudong1900ca12011-12-17 21:24:40 +0800351#else
352static inline void pci_restore_ats_state(struct pci_dev *dev)
353{
354}
355#endif /* CONFIG_PCI_ATS */
356
Yu Zhaod1b054d2009-03-20 11:25:11 +0800357#ifdef CONFIG_PCI_IOV
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600358int pci_iov_init(struct pci_dev *dev);
359void pci_iov_release(struct pci_dev *dev);
Jakub Kicinski38972372018-06-29 15:08:52 -0500360void pci_iov_remove(struct pci_dev *dev);
Bjorn Helgaas6ffa2482016-11-28 09:15:52 -0600361void pci_iov_update_resource(struct pci_dev *dev, int resno);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600362resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
363void pci_restore_iov_state(struct pci_dev *dev);
364int pci_iov_bus_range(struct pci_bus *bus);
Yu Zhao302b4212009-05-18 13:51:32 +0800365
Yu Zhaod1b054d2009-03-20 11:25:11 +0800366#else
367static inline int pci_iov_init(struct pci_dev *dev)
368{
369 return -ENODEV;
370}
371static inline void pci_iov_release(struct pci_dev *dev)
372
373{
374}
Jakub Kicinski38972372018-06-29 15:08:52 -0500375static inline void pci_iov_remove(struct pci_dev *dev)
376{
377}
Yu Zhao8c5cdb62009-03-20 11:25:12 +0800378static inline void pci_restore_iov_state(struct pci_dev *dev)
379{
380}
Yu Zhaoa28724b2009-03-20 11:25:13 +0800381static inline int pci_iov_bus_range(struct pci_bus *bus)
382{
383 return 0;
384}
Yu Zhao302b4212009-05-18 13:51:32 +0800385
Yu Zhaod1b054d2009-03-20 11:25:11 +0800386#endif /* CONFIG_PCI_IOV */
387
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600388unsigned long pci_cardbus_resource_alignment(struct resource *);
Ram Pai0a2daa12011-07-25 13:08:41 -0700389
Cam Macdonell0e522472010-09-07 17:25:20 -0700390static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600391 struct resource *res)
Chris Wright6faf17f2009-08-28 13:00:06 -0700392{
393#ifdef CONFIG_PCI_IOV
394 int resno = res - dev->resource;
395
396 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
397 return pci_sriov_resource_alignment(dev, resno);
398#endif
Bjorn Helgaas0aa0f5d2017-12-02 13:21:37 -0600399 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
Ram Pai0a2daa12011-07-25 13:08:41 -0700400 return pci_cardbus_resource_alignment(res);
Chris Wright6faf17f2009-08-28 13:00:06 -0700401 return resource_alignment(res);
402}
403
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600404void pci_enable_acs(struct pci_dev *dev);
Bjorn Helgaasbd2e9562018-08-09 16:19:52 -0500405#ifdef CONFIG_PCI_QUIRKS
406int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
407int pci_dev_specific_enable_acs(struct pci_dev *dev);
Logan Gunthorpe73c47dde2018-08-09 16:51:43 -0500408int pci_dev_specific_disable_acs_redir(struct pci_dev *dev);
Bjorn Helgaasbd2e9562018-08-09 16:19:52 -0500409#else
410static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
411 u16 acs_flags)
412{
413 return -ENOTTY;
414}
415static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
416{
417 return -ENOTTY;
418}
Logan Gunthorpe73c47dde2018-08-09 16:51:43 -0500419static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
420{
421 return -ENOTTY;
422}
Bjorn Helgaasbd2e9562018-08-09 16:19:52 -0500423#endif
Allen Kayae21ee62009-10-07 10:27:17 -0700424
Oza Pawandeep2e28bc82018-05-17 16:44:15 -0500425/* PCI error reporting and recovery */
Oza Pawandeep0b914392018-05-17 16:44:19 -0500426void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service);
Oza Pawandeep2e28bc82018-05-17 16:44:15 -0500427void pcie_do_nonfatal_recovery(struct pci_dev *dev);
428
Oza Pawandeep9f5a70f12018-05-17 16:44:11 -0500429bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
Bjorn Helgaas7d8e7d12017-12-15 08:57:28 -0600430#ifdef CONFIG_PCIEASPM
431void pcie_aspm_init_link_state(struct pci_dev *pdev);
432void pcie_aspm_exit_link_state(struct pci_dev *pdev);
433void pcie_aspm_pm_state_change(struct pci_dev *pdev);
434void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
435#else
436static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { }
437static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { }
438static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { }
439static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
440#endif
441
442#ifdef CONFIG_PCIEASPM_DEBUG
443void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
444void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
445#else
446static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) { }
447static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) { }
448#endif
449
Jonathan Yong9bb04a02016-06-11 14:13:38 -0500450#ifdef CONFIG_PCIE_PTM
451void pci_ptm_init(struct pci_dev *dev);
452#else
453static inline void pci_ptm_init(struct pci_dev *dev) { }
454#endif
455
Dexuan Cuib9c3b262009-12-07 13:03:21 +0800456struct pci_dev_reset_methods {
457 u16 vendor;
458 u16 device;
459 int (*reset)(struct pci_dev *dev, int probe);
460};
461
Rafael J. Wysocki93177a72010-01-02 22:57:24 +0100462#ifdef CONFIG_PCI_QUIRKS
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600463int pci_dev_specific_reset(struct pci_dev *dev, int probe);
Rafael J. Wysocki93177a72010-01-02 22:57:24 +0100464#else
465static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
466{
467 return -ENOTTY;
468}
469#endif
Dexuan Cuib9c3b262009-12-07 13:03:21 +0800470
Dongdong Liu169de962016-12-01 00:33:42 -0600471#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
472int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
473 struct resource *res);
474#endif
475
Christian König276b7382017-10-24 14:40:20 -0500476u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar);
477int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
478int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size);
479static inline u64 pci_rebar_size_to_bytes(int size)
480{
481 return 1ULL << (size + 20);
482}
483
Rob Herring9e2aee82018-05-11 12:15:30 -0500484struct device_node;
485
486#ifdef CONFIG_OF
487int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
488int of_get_pci_domain_nr(struct device_node *node);
489int of_pci_get_max_link_speed(struct device_node *node);
490
491#else
492static inline int
493of_pci_parse_bus_range(struct device_node *node, struct resource *res)
494{
495 return -EINVAL;
496}
497
498static inline int
499of_get_pci_domain_nr(struct device_node *node)
500{
501 return -1;
502}
503
504static inline int
505of_pci_get_max_link_speed(struct device_node *node)
506{
507 return -EINVAL;
508}
509#endif /* CONFIG_OF */
510
511#if defined(CONFIG_OF_ADDRESS)
Bjorn Helgaasf03c7aa2018-06-06 16:10:27 -0500512int devm_of_pci_get_host_bridge_resources(struct device *dev,
Rob Herring9e2aee82018-05-11 12:15:30 -0500513 unsigned char busno, unsigned char bus_max,
514 struct list_head *resources, resource_size_t *io_base);
515#else
Bjorn Helgaasf03c7aa2018-06-06 16:10:27 -0500516static inline int devm_of_pci_get_host_bridge_resources(struct device *dev,
Rob Herring9e2aee82018-05-11 12:15:30 -0500517 unsigned char busno, unsigned char bus_max,
518 struct list_head *resources, resource_size_t *io_base)
519{
520 return -EINVAL;
521}
522#endif
523
Rajat Jain60ed9822018-06-21 16:48:26 -0700524#ifdef CONFIG_PCIEAER
525void pci_no_aer(void);
526void pci_aer_init(struct pci_dev *dev);
Rajat Jaindb89ccb2018-06-30 15:07:17 -0500527void pci_aer_exit(struct pci_dev *dev);
Rajat Jain81aa5202018-06-21 16:48:28 -0700528extern const struct attribute_group aer_stats_attr_group;
Bjorn Helgaas7ab92e82018-07-19 17:55:58 -0500529void pci_aer_clear_fatal_status(struct pci_dev *dev);
Oza Pawandeepec752f52018-07-19 17:58:09 -0500530void pci_aer_clear_device_status(struct pci_dev *dev);
Rajat Jain60ed9822018-06-21 16:48:26 -0700531#else
532static inline void pci_no_aer(void) { }
533static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; }
Rajat Jaindb89ccb2018-06-30 15:07:17 -0500534static inline void pci_aer_exit(struct pci_dev *d) { }
Bjorn Helgaas7ab92e82018-07-19 17:55:58 -0500535static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
Oza Pawandeepec752f52018-07-19 17:58:09 -0500536static inline void pci_aer_clear_device_status(struct pci_dev *dev) { }
Rajat Jain60ed9822018-06-21 16:48:26 -0700537#endif
538
Zhao, Yu557848c2008-10-13 19:18:07 +0800539#endif /* DRIVERS_PCI_H */