1 /* SPDX-License-Identifier: GPL-2.0 */
7 /* Number of possible devfns: 0.0 to 1f.7 inclusive */
8 #define MAX_NR_DEVFNS 256
10 #define PCI_FIND_CAP_TTL 48
12 #define PCI_VSEC_ID_INTEL_TBT 0x1234 /* Thunderbolt */
14 #define PCIE_LINK_RETRAIN_TIMEOUT_MS 1000
16 /* Power stable to PERST# inactive from PCIe card Electromechanical Spec */
17 #define PCIE_T_PVPERL_MS 100
20 * PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>
21 * Recommends 1ms to 10ms timeout to check L2 ready.
23 #define PCIE_PME_TO_L2_TIMEOUT_US 10000
25 extern const unsigned char pcie_link_speed[];
26 extern bool pci_early_dump;
28 bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
29 bool pcie_cap_has_lnkctl2(const struct pci_dev *dev);
30 bool pcie_cap_has_rtctl(const struct pci_dev *dev);
32 /* Functions internal to the PCI core code */
35 extern const struct attribute_group pci_dev_smbios_attr_group;
39 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
40 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
42 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
43 enum pci_mmap_api mmap_api);
45 bool pci_reset_supported(struct pci_dev *dev);
46 void pci_init_reset_methods(struct pci_dev *dev);
47 int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
48 int pci_bus_error_reset(struct pci_dev *dev);
50 struct pci_cap_saved_data {
57 struct pci_cap_saved_state {
58 struct hlist_node next;
59 struct pci_cap_saved_data cap;
62 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
63 void pci_free_cap_save_buffers(struct pci_dev *dev);
64 int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size);
65 int pci_add_ext_cap_save_buffer(struct pci_dev *dev,
66 u16 cap, unsigned int size);
67 struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap);
68 struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
71 #define PCI_PM_D2_DELAY 200 /* usec; see PCIe r4.0, sec 5.9.1 */
72 #define PCI_PM_D3HOT_WAIT 10 /* msec */
73 #define PCI_PM_D3COLD_WAIT 100 /* msec */
75 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
76 void pci_refresh_power_state(struct pci_dev *dev);
77 int pci_power_up(struct pci_dev *dev);
78 void pci_disable_enabled_device(struct pci_dev *dev);
79 int pci_finish_runtime_suspend(struct pci_dev *dev);
80 void pcie_clear_device_status(struct pci_dev *dev);
81 void pcie_clear_root_pme_status(struct pci_dev *dev);
82 bool pci_check_pme_status(struct pci_dev *dev);
83 void pci_pme_wakeup_bus(struct pci_bus *bus);
84 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
85 void pci_pme_restore(struct pci_dev *dev);
86 bool pci_dev_need_resume(struct pci_dev *dev);
87 void pci_dev_adjust_pme(struct pci_dev *dev);
88 void pci_dev_complete_resume(struct pci_dev *pci_dev);
89 void pci_config_pm_runtime_get(struct pci_dev *dev);
90 void pci_config_pm_runtime_put(struct pci_dev *dev);
91 void pci_pm_init(struct pci_dev *dev);
92 void pci_ea_init(struct pci_dev *dev);
93 void pci_msi_init(struct pci_dev *dev);
94 void pci_msix_init(struct pci_dev *dev);
95 bool pci_bridge_d3_possible(struct pci_dev *dev);
96 void pci_bridge_d3_update(struct pci_dev *dev);
97 void pci_bridge_reconfigure_ltr(struct pci_dev *dev);
98 int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type);
100 static inline void pci_wakeup_event(struct pci_dev *dev)
102 /* Wait 100 ms before the system can be put into a sleep state. */
103 pm_wakeup_event(&dev->dev, 100);
106 static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
108 return !!(pci_dev->subordinate);
111 static inline bool pci_power_manageable(struct pci_dev *pci_dev)
114 * Currently we allow normal PCI devices and PCI bridges transition
115 * into D3 if their bridge_d3 is set.
117 return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
120 static inline bool pcie_downstream_port(const struct pci_dev *dev)
122 int type = pci_pcie_type(dev);
124 return type == PCI_EXP_TYPE_ROOT_PORT ||
125 type == PCI_EXP_TYPE_DOWNSTREAM ||
126 type == PCI_EXP_TYPE_PCIE_BRIDGE;
129 void pci_vpd_init(struct pci_dev *dev);
130 void pci_vpd_release(struct pci_dev *dev);
131 extern const struct attribute_group pci_dev_vpd_attr_group;
133 /* PCI Virtual Channel */
134 int pci_save_vc_state(struct pci_dev *dev);
135 void pci_restore_vc_state(struct pci_dev *dev);
136 void pci_allocate_vc_save_buffers(struct pci_dev *dev);
138 /* PCI /proc functions */
139 #ifdef CONFIG_PROC_FS
140 int pci_proc_attach_device(struct pci_dev *dev);
141 int pci_proc_detach_device(struct pci_dev *dev);
142 int pci_proc_detach_bus(struct pci_bus *bus);
144 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
145 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
146 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
149 /* Functions for PCI Hotplug drivers to use */
150 int pci_hp_add_bridge(struct pci_dev *dev);
152 #if defined(CONFIG_SYSFS) && defined(HAVE_PCI_LEGACY)
153 void pci_create_legacy_files(struct pci_bus *bus);
154 void pci_remove_legacy_files(struct pci_bus *bus);
156 static inline void pci_create_legacy_files(struct pci_bus *bus) { }
157 static inline void pci_remove_legacy_files(struct pci_bus *bus) { }
160 /* Lock for read/write access to pci device and bus lists */
161 extern struct rw_semaphore pci_bus_sem;
162 extern struct mutex pci_slot_mutex;
164 extern raw_spinlock_t pci_lock;
166 extern unsigned int pci_pm_d3hot_delay;
168 #ifdef CONFIG_PCI_MSI
169 void pci_no_msi(void);
171 static inline void pci_no_msi(void) { }
174 void pci_realloc_get_opt(char *);
176 static inline int pci_no_d1d2(struct pci_dev *dev)
178 unsigned int parent_dstates = 0;
181 parent_dstates = dev->bus->self->no_d1d2;
182 return (dev->no_d1d2 || parent_dstates);
187 int pci_create_sysfs_dev_files(struct pci_dev *pdev);
188 void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
189 extern const struct attribute_group *pci_dev_groups[];
190 extern const struct attribute_group *pci_dev_attr_groups[];
191 extern const struct attribute_group *pcibus_groups[];
192 extern const struct attribute_group *pci_bus_groups[];
194 static inline int pci_create_sysfs_dev_files(struct pci_dev *pdev) { return 0; }
195 static inline void pci_remove_sysfs_dev_files(struct pci_dev *pdev) { }
196 #define pci_dev_groups NULL
197 #define pci_dev_attr_groups NULL
198 #define pcibus_groups NULL
199 #define pci_bus_groups NULL
202 extern unsigned long pci_hotplug_io_size;
203 extern unsigned long pci_hotplug_mmio_size;
204 extern unsigned long pci_hotplug_mmio_pref_size;
205 extern unsigned long pci_hotplug_bus_size;
208 * pci_match_one_device - Tell if a PCI device structure has a matching
209 * PCI device id structure
210 * @id: single PCI device id structure to match
211 * @dev: the PCI device structure to match against
213 * Returns the matching pci_device_id structure or %NULL if there is no match.
215 static inline const struct pci_device_id *
216 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
218 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
219 (id->device == PCI_ANY_ID || id->device == dev->device) &&
220 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
221 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
222 !((id->class ^ dev->class) & id->class_mask))
227 /* PCI slot sysfs helper code */
228 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
230 extern struct kset *pci_slots_kset;
232 struct pci_slot_attribute {
233 struct attribute attr;
234 ssize_t (*show)(struct pci_slot *, char *);
235 ssize_t (*store)(struct pci_slot *, const char *, size_t);
237 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
240 pci_bar_unknown, /* Standard PCI BAR probe */
241 pci_bar_io, /* An I/O port BAR */
242 pci_bar_mem32, /* A 32-bit memory BAR */
243 pci_bar_mem64, /* A 64-bit memory BAR */
246 struct device *pci_get_host_bridge_device(struct pci_dev *dev);
247 void pci_put_host_bridge_device(struct device *dev);
249 int pci_configure_extended_tags(struct pci_dev *dev, void *ign);
250 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
252 bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
254 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *pl, int crs_timeout);
256 int pci_setup_device(struct pci_dev *dev);
257 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
258 struct resource *res, unsigned int reg);
259 void pci_configure_ari(struct pci_dev *dev);
260 void __pci_bus_size_bridges(struct pci_bus *bus,
261 struct list_head *realloc_head);
262 void __pci_bus_assign_resources(const struct pci_bus *bus,
263 struct list_head *realloc_head,
264 struct list_head *fail_head);
265 bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
267 const char *pci_resource_name(struct pci_dev *dev, unsigned int i);
269 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
270 void pci_disable_bridge_window(struct pci_dev *dev);
271 struct pci_bus *pci_bus_get(struct pci_bus *bus);
272 void pci_bus_put(struct pci_bus *bus);
274 /* PCIe link information from Link Capabilities 2 */
275 #define PCIE_LNKCAP2_SLS2SPEED(lnkcap2) \
276 ((lnkcap2) & PCI_EXP_LNKCAP2_SLS_64_0GB ? PCIE_SPEED_64_0GT : \
277 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_32_0GB ? PCIE_SPEED_32_0GT : \
278 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_16_0GB ? PCIE_SPEED_16_0GT : \
279 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_8_0GB ? PCIE_SPEED_8_0GT : \
280 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_5_0GB ? PCIE_SPEED_5_0GT : \
281 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_2_5GB ? PCIE_SPEED_2_5GT : \
284 /* PCIe speed to Mb/s reduced by encoding overhead */
285 #define PCIE_SPEED2MBS_ENC(speed) \
286 ((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \
287 (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
288 (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
289 (speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \
290 (speed) == PCIE_SPEED_5_0GT ? 5000*8/10 : \
291 (speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
294 const char *pci_speed_string(enum pci_bus_speed speed);
295 enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
296 enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
297 u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed,
298 enum pcie_link_width *width);
299 void __pcie_print_link_status(struct pci_dev *dev, bool verbose);
300 void pcie_report_downtraining(struct pci_dev *dev);
301 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
303 /* Single Root I/O Virtualization */
305 int pos; /* Capability position */
306 int nres; /* Number of resources */
307 u32 cap; /* SR-IOV Capabilities */
308 u16 ctrl; /* SR-IOV Control */
309 u16 total_VFs; /* Total VFs associated with the PF */
310 u16 initial_VFs; /* Initial VFs associated with the PF */
311 u16 num_VFs; /* Number of VFs available */
312 u16 offset; /* First VF Routing ID offset */
313 u16 stride; /* Following VF stride */
314 u16 vf_device; /* VF device ID */
315 u32 pgsz; /* Page size for BAR alignment */
316 u8 link; /* Function Dependency Link */
317 u8 max_VF_buses; /* Max buses consumed by VFs */
318 u16 driver_max_VFs; /* Max num VFs driver supports */
319 struct pci_dev *dev; /* Lowest numbered PF */
320 struct pci_dev *self; /* This PF */
321 u32 class; /* VF device */
322 u8 hdr_type; /* VF header type */
323 u16 subsystem_vendor; /* VF subsystem vendor */
324 u16 subsystem_device; /* VF subsystem device */
325 resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
326 bool drivers_autoprobe; /* Auto probing of VFs by driver */
329 #ifdef CONFIG_PCI_DOE
330 void pci_doe_init(struct pci_dev *pdev);
331 void pci_doe_destroy(struct pci_dev *pdev);
332 void pci_doe_disconnected(struct pci_dev *pdev);
334 static inline void pci_doe_init(struct pci_dev *pdev) { }
335 static inline void pci_doe_destroy(struct pci_dev *pdev) { }
336 static inline void pci_doe_disconnected(struct pci_dev *pdev) { }
340 * pci_dev_set_io_state - Set the new error state if possible.
342 * @dev: PCI device to set new error_state
343 * @new: the state we want dev to be in
345 * If the device is experiencing perm_failure, it has to remain in that state.
346 * Any other transition is allowed.
348 * Returns true if state has been changed to the requested state.
350 static inline bool pci_dev_set_io_state(struct pci_dev *dev,
351 pci_channel_state_t new)
353 pci_channel_state_t old;
356 case pci_channel_io_perm_failure:
357 xchg(&dev->error_state, pci_channel_io_perm_failure);
359 case pci_channel_io_frozen:
360 old = cmpxchg(&dev->error_state, pci_channel_io_normal,
361 pci_channel_io_frozen);
362 return old != pci_channel_io_perm_failure;
363 case pci_channel_io_normal:
364 old = cmpxchg(&dev->error_state, pci_channel_io_frozen,
365 pci_channel_io_normal);
366 return old != pci_channel_io_perm_failure;
372 static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
374 pci_dev_set_io_state(dev, pci_channel_io_perm_failure);
375 pci_doe_disconnected(dev);
380 static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
382 return dev->error_state == pci_channel_io_perm_failure;
385 /* pci_dev priv_flags */
386 #define PCI_DEV_ADDED 0
387 #define PCI_DPC_RECOVERED 1
388 #define PCI_DPC_RECOVERING 2
390 static inline void pci_dev_assign_added(struct pci_dev *dev, bool added)
392 assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added);
395 static inline bool pci_dev_is_added(const struct pci_dev *dev)
397 return test_bit(PCI_DEV_ADDED, &dev->priv_flags);
400 #ifdef CONFIG_PCIEAER
401 #include <linux/aer.h>
403 #define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
405 struct aer_err_info {
406 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
411 unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */
412 unsigned int __pad1:5;
413 unsigned int multi_error_valid:1;
415 unsigned int first_error:5;
416 unsigned int __pad2:2;
417 unsigned int tlp_header_valid:1;
419 unsigned int status; /* COR/UNCOR Error Status */
420 unsigned int mask; /* COR/UNCOR Error Mask */
421 struct aer_header_log_regs tlp; /* TLP Header */
424 int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info);
425 void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
426 #endif /* CONFIG_PCIEAER */
428 #ifdef CONFIG_PCIEPORTBUS
429 /* Cached RCEC Endpoint Association */
437 #ifdef CONFIG_PCIE_DPC
438 void pci_save_dpc_state(struct pci_dev *dev);
439 void pci_restore_dpc_state(struct pci_dev *dev);
440 void pci_dpc_init(struct pci_dev *pdev);
441 void dpc_process_error(struct pci_dev *pdev);
442 pci_ers_result_t dpc_reset_link(struct pci_dev *pdev);
443 bool pci_dpc_recovered(struct pci_dev *pdev);
445 static inline void pci_save_dpc_state(struct pci_dev *dev) { }
446 static inline void pci_restore_dpc_state(struct pci_dev *dev) { }
447 static inline void pci_dpc_init(struct pci_dev *pdev) { }
448 static inline bool pci_dpc_recovered(struct pci_dev *pdev) { return false; }
451 #ifdef CONFIG_PCIEPORTBUS
452 void pci_rcec_init(struct pci_dev *dev);
453 void pci_rcec_exit(struct pci_dev *dev);
454 void pcie_link_rcec(struct pci_dev *rcec);
455 void pcie_walk_rcec(struct pci_dev *rcec,
456 int (*cb)(struct pci_dev *, void *),
459 static inline void pci_rcec_init(struct pci_dev *dev) { }
460 static inline void pci_rcec_exit(struct pci_dev *dev) { }
461 static inline void pcie_link_rcec(struct pci_dev *rcec) { }
462 static inline void pcie_walk_rcec(struct pci_dev *rcec,
463 int (*cb)(struct pci_dev *, void *),
467 #ifdef CONFIG_PCI_ATS
468 /* Address Translation Service */
469 void pci_ats_init(struct pci_dev *dev);
470 void pci_restore_ats_state(struct pci_dev *dev);
472 static inline void pci_ats_init(struct pci_dev *d) { }
473 static inline void pci_restore_ats_state(struct pci_dev *dev) { }
474 #endif /* CONFIG_PCI_ATS */
476 #ifdef CONFIG_PCI_PRI
477 void pci_pri_init(struct pci_dev *dev);
478 void pci_restore_pri_state(struct pci_dev *pdev);
480 static inline void pci_pri_init(struct pci_dev *dev) { }
481 static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
484 #ifdef CONFIG_PCI_PASID
485 void pci_pasid_init(struct pci_dev *dev);
486 void pci_restore_pasid_state(struct pci_dev *pdev);
488 static inline void pci_pasid_init(struct pci_dev *dev) { }
489 static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
492 #ifdef CONFIG_PCI_IOV
493 int pci_iov_init(struct pci_dev *dev);
494 void pci_iov_release(struct pci_dev *dev);
495 void pci_iov_remove(struct pci_dev *dev);
496 void pci_iov_update_resource(struct pci_dev *dev, int resno);
497 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
498 void pci_restore_iov_state(struct pci_dev *dev);
499 int pci_iov_bus_range(struct pci_bus *bus);
500 extern const struct attribute_group sriov_pf_dev_attr_group;
501 extern const struct attribute_group sriov_vf_dev_attr_group;
503 static inline int pci_iov_init(struct pci_dev *dev)
507 static inline void pci_iov_release(struct pci_dev *dev) { }
508 static inline void pci_iov_remove(struct pci_dev *dev) { }
509 static inline void pci_restore_iov_state(struct pci_dev *dev) { }
510 static inline int pci_iov_bus_range(struct pci_bus *bus)
515 #endif /* CONFIG_PCI_IOV */
517 #ifdef CONFIG_PCIE_PTM
518 void pci_ptm_init(struct pci_dev *dev);
519 void pci_save_ptm_state(struct pci_dev *dev);
520 void pci_restore_ptm_state(struct pci_dev *dev);
521 void pci_suspend_ptm(struct pci_dev *dev);
522 void pci_resume_ptm(struct pci_dev *dev);
524 static inline void pci_ptm_init(struct pci_dev *dev) { }
525 static inline void pci_save_ptm_state(struct pci_dev *dev) { }
526 static inline void pci_restore_ptm_state(struct pci_dev *dev) { }
527 static inline void pci_suspend_ptm(struct pci_dev *dev) { }
528 static inline void pci_resume_ptm(struct pci_dev *dev) { }
531 unsigned long pci_cardbus_resource_alignment(struct resource *);
533 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
534 struct resource *res)
536 #ifdef CONFIG_PCI_IOV
537 int resno = res - dev->resource;
539 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
540 return pci_sriov_resource_alignment(dev, resno);
542 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
543 return pci_cardbus_resource_alignment(res);
544 return resource_alignment(res);
547 void pci_acs_init(struct pci_dev *dev);
548 #ifdef CONFIG_PCI_QUIRKS
549 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
550 int pci_dev_specific_enable_acs(struct pci_dev *dev);
551 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev);
552 bool pcie_failed_link_retrain(struct pci_dev *dev);
554 static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
559 static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
563 static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
567 static inline bool pcie_failed_link_retrain(struct pci_dev *dev)
573 /* PCI error reporting and recovery */
574 pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
575 pci_channel_state_t state,
576 pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev));
578 bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
579 int pcie_retrain_link(struct pci_dev *pdev, bool use_lt);
580 #ifdef CONFIG_PCIEASPM
581 void pcie_aspm_init_link_state(struct pci_dev *pdev);
582 void pcie_aspm_exit_link_state(struct pci_dev *pdev);
583 void pcie_aspm_pm_state_change(struct pci_dev *pdev);
584 void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
586 static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { }
587 static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { }
588 static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { }
589 static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
592 #ifdef CONFIG_PCIE_ECRC
593 void pcie_set_ecrc_checking(struct pci_dev *dev);
594 void pcie_ecrc_get_policy(char *str);
596 static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
597 static inline void pcie_ecrc_get_policy(char *str) { }
600 struct pci_dev_reset_methods {
603 int (*reset)(struct pci_dev *dev, bool probe);
606 struct pci_reset_fn_method {
607 int (*reset_fn)(struct pci_dev *pdev, bool probe);
611 #ifdef CONFIG_PCI_QUIRKS
612 int pci_dev_specific_reset(struct pci_dev *dev, bool probe);
614 static inline int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
620 #if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
621 int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
622 struct resource *res);
624 static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
625 u16 segment, struct resource *res)
631 int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
632 int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size);
633 static inline u64 pci_rebar_size_to_bytes(int size)
635 return 1ULL << (size + 20);
641 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
642 int of_get_pci_domain_nr(struct device_node *node);
643 int of_pci_get_max_link_speed(struct device_node *node);
644 u32 of_pci_get_slot_power_limit(struct device_node *node,
645 u8 *slot_power_limit_value,
646 u8 *slot_power_limit_scale);
647 int pci_set_of_node(struct pci_dev *dev);
648 void pci_release_of_node(struct pci_dev *dev);
649 void pci_set_bus_of_node(struct pci_bus *bus);
650 void pci_release_bus_of_node(struct pci_bus *bus);
652 int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge);
656 of_pci_parse_bus_range(struct device_node *node, struct resource *res)
662 of_get_pci_domain_nr(struct device_node *node)
668 of_pci_get_max_link_speed(struct device_node *node)
674 of_pci_get_slot_power_limit(struct device_node *node,
675 u8 *slot_power_limit_value,
676 u8 *slot_power_limit_scale)
678 if (slot_power_limit_value)
679 *slot_power_limit_value = 0;
680 if (slot_power_limit_scale)
681 *slot_power_limit_scale = 0;
685 static inline int pci_set_of_node(struct pci_dev *dev) { return 0; }
686 static inline void pci_release_of_node(struct pci_dev *dev) { }
687 static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
688 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
690 static inline int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
695 #endif /* CONFIG_OF */
699 #ifdef CONFIG_PCI_DYNAMIC_OF_NODES
700 void of_pci_make_dev_node(struct pci_dev *pdev);
701 void of_pci_remove_node(struct pci_dev *pdev);
702 int of_pci_add_properties(struct pci_dev *pdev, struct of_changeset *ocs,
703 struct device_node *np);
705 static inline void of_pci_make_dev_node(struct pci_dev *pdev) { }
706 static inline void of_pci_remove_node(struct pci_dev *pdev) { }
709 #ifdef CONFIG_PCIEAER
710 void pci_no_aer(void);
711 void pci_aer_init(struct pci_dev *dev);
712 void pci_aer_exit(struct pci_dev *dev);
713 extern const struct attribute_group aer_stats_attr_group;
714 void pci_aer_clear_fatal_status(struct pci_dev *dev);
715 int pci_aer_clear_status(struct pci_dev *dev);
716 int pci_aer_raw_clear_status(struct pci_dev *dev);
717 void pci_save_aer_state(struct pci_dev *dev);
718 void pci_restore_aer_state(struct pci_dev *dev);
720 static inline void pci_no_aer(void) { }
721 static inline void pci_aer_init(struct pci_dev *d) { }
722 static inline void pci_aer_exit(struct pci_dev *d) { }
723 static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
724 static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; }
725 static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
726 static inline void pci_save_aer_state(struct pci_dev *dev) { }
727 static inline void pci_restore_aer_state(struct pci_dev *dev) { }
731 int pci_acpi_program_hp_params(struct pci_dev *dev);
732 extern const struct attribute_group pci_dev_acpi_attr_group;
733 void pci_set_acpi_fwnode(struct pci_dev *dev);
734 int pci_dev_acpi_reset(struct pci_dev *dev, bool probe);
735 bool acpi_pci_power_manageable(struct pci_dev *dev);
736 bool acpi_pci_bridge_d3(struct pci_dev *dev);
737 int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state);
738 pci_power_t acpi_pci_get_power_state(struct pci_dev *dev);
739 void acpi_pci_refresh_power_state(struct pci_dev *dev);
740 int acpi_pci_wakeup(struct pci_dev *dev, bool enable);
741 bool acpi_pci_need_resume(struct pci_dev *dev);
742 pci_power_t acpi_pci_choose_state(struct pci_dev *pdev);
744 static inline int pci_dev_acpi_reset(struct pci_dev *dev, bool probe)
748 static inline void pci_set_acpi_fwnode(struct pci_dev *dev) { }
749 static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
753 static inline bool acpi_pci_power_manageable(struct pci_dev *dev)
757 static inline bool acpi_pci_bridge_d3(struct pci_dev *dev)
761 static inline int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
765 static inline pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
769 static inline void acpi_pci_refresh_power_state(struct pci_dev *dev) { }
770 static inline int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
774 static inline bool acpi_pci_need_resume(struct pci_dev *dev)
778 static inline pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
780 return PCI_POWER_ERROR;
784 #ifdef CONFIG_PCIEASPM
785 extern const struct attribute_group aspm_ctrl_attr_group;
788 extern const struct attribute_group pci_dev_reset_method_attr_group;
790 #ifdef CONFIG_X86_INTEL_MID
791 bool pci_use_mid_pm(void);
792 int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state);
793 pci_power_t mid_pci_get_power_state(struct pci_dev *pdev);
795 static inline bool pci_use_mid_pm(void)
799 static inline int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
803 static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
810 * Config Address for PCI Configuration Mechanism #1
812 * See PCI Local Bus Specification, Revision 3.0,
813 * Section 3.2.2.3.2, Figure 3-2, p. 50.
816 #define PCI_CONF1_BUS_SHIFT 16 /* Bus number */
817 #define PCI_CONF1_DEV_SHIFT 11 /* Device number */
818 #define PCI_CONF1_FUNC_SHIFT 8 /* Function number */
820 #define PCI_CONF1_BUS_MASK 0xff
821 #define PCI_CONF1_DEV_MASK 0x1f
822 #define PCI_CONF1_FUNC_MASK 0x7
823 #define PCI_CONF1_REG_MASK 0xfc /* Limit aligned offset to a maximum of 256B */
825 #define PCI_CONF1_ENABLE BIT(31)
826 #define PCI_CONF1_BUS(x) (((x) & PCI_CONF1_BUS_MASK) << PCI_CONF1_BUS_SHIFT)
827 #define PCI_CONF1_DEV(x) (((x) & PCI_CONF1_DEV_MASK) << PCI_CONF1_DEV_SHIFT)
828 #define PCI_CONF1_FUNC(x) (((x) & PCI_CONF1_FUNC_MASK) << PCI_CONF1_FUNC_SHIFT)
829 #define PCI_CONF1_REG(x) ((x) & PCI_CONF1_REG_MASK)
831 #define PCI_CONF1_ADDRESS(bus, dev, func, reg) \
832 (PCI_CONF1_ENABLE | \
833 PCI_CONF1_BUS(bus) | \
834 PCI_CONF1_DEV(dev) | \
835 PCI_CONF1_FUNC(func) | \
839 * Extension of PCI Config Address for accessing extended PCIe registers
841 * No standardized specification, but used on lot of non-ECAM-compliant ARM SoCs
842 * or on AMD Barcelona and new CPUs. Reserved bits [27:24] of PCI Config Address
843 * are used for specifying additional 4 high bits of PCI Express register.
846 #define PCI_CONF1_EXT_REG_SHIFT 16
847 #define PCI_CONF1_EXT_REG_MASK 0xf00
848 #define PCI_CONF1_EXT_REG(x) (((x) & PCI_CONF1_EXT_REG_MASK) << PCI_CONF1_EXT_REG_SHIFT)
850 #define PCI_CONF1_EXT_ADDRESS(bus, dev, func, reg) \
851 (PCI_CONF1_ADDRESS(bus, dev, func, reg) | \
852 PCI_CONF1_EXT_REG(reg))
854 #endif /* DRIVERS_PCI_H */