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 extern const unsigned char pcie_link_speed[];
15 extern bool pci_early_dump;
17 bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
18 bool pcie_cap_has_lnkctl2(const struct pci_dev *dev);
19 bool pcie_cap_has_rtctl(const struct pci_dev *dev);
21 /* Functions internal to the PCI core code */
23 int pci_create_sysfs_dev_files(struct pci_dev *pdev);
24 void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
25 void pci_cleanup_rom(struct pci_dev *dev);
27 extern const struct attribute_group pci_dev_smbios_attr_group;
31 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
32 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
34 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
35 enum pci_mmap_api mmap_api);
37 bool pci_reset_supported(struct pci_dev *dev);
38 void pci_init_reset_methods(struct pci_dev *dev);
39 int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
40 int pci_bus_error_reset(struct pci_dev *dev);
42 struct pci_cap_saved_data {
49 struct pci_cap_saved_state {
50 struct hlist_node next;
51 struct pci_cap_saved_data cap;
54 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
55 void pci_free_cap_save_buffers(struct pci_dev *dev);
56 int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size);
57 int pci_add_ext_cap_save_buffer(struct pci_dev *dev,
58 u16 cap, unsigned int size);
59 struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap);
60 struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
63 #define PCI_PM_D2_DELAY 200 /* usec; see PCIe r4.0, sec 5.9.1 */
64 #define PCI_PM_D3HOT_WAIT 10 /* msec */
65 #define PCI_PM_D3COLD_WAIT 100 /* msec */
68 * Following exit from Conventional Reset, devices must be ready within 1 sec
69 * (PCIe r6.0 sec 6.6.1). A D3cold to D0 transition implies a Conventional
70 * Reset (PCIe r6.0 sec 5.8).
72 #define PCI_RESET_WAIT 1000 /* msec */
74 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
75 void pci_refresh_power_state(struct pci_dev *dev);
76 int pci_power_up(struct pci_dev *dev);
77 void pci_disable_enabled_device(struct pci_dev *dev);
78 int pci_finish_runtime_suspend(struct pci_dev *dev);
79 void pcie_clear_device_status(struct pci_dev *dev);
80 void pcie_clear_root_pme_status(struct pci_dev *dev);
81 bool pci_check_pme_status(struct pci_dev *dev);
82 void pci_pme_wakeup_bus(struct pci_bus *bus);
83 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
84 void pci_pme_restore(struct pci_dev *dev);
85 bool pci_dev_need_resume(struct pci_dev *dev);
86 void pci_dev_adjust_pme(struct pci_dev *dev);
87 void pci_dev_complete_resume(struct pci_dev *pci_dev);
88 void pci_config_pm_runtime_get(struct pci_dev *dev);
89 void pci_config_pm_runtime_put(struct pci_dev *dev);
90 void pci_pm_init(struct pci_dev *dev);
91 void pci_ea_init(struct pci_dev *dev);
92 void pci_msi_init(struct pci_dev *dev);
93 void pci_msix_init(struct pci_dev *dev);
94 bool pci_bridge_d3_possible(struct pci_dev *dev);
95 void pci_bridge_d3_update(struct pci_dev *dev);
96 void pci_bridge_reconfigure_ltr(struct pci_dev *dev);
97 int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type);
99 static inline void pci_wakeup_event(struct pci_dev *dev)
101 /* Wait 100 ms before the system can be put into a sleep state. */
102 pm_wakeup_event(&dev->dev, 100);
105 static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
107 return !!(pci_dev->subordinate);
110 static inline bool pci_power_manageable(struct pci_dev *pci_dev)
113 * Currently we allow normal PCI devices and PCI bridges transition
114 * into D3 if their bridge_d3 is set.
116 return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
119 static inline bool pcie_downstream_port(const struct pci_dev *dev)
121 int type = pci_pcie_type(dev);
123 return type == PCI_EXP_TYPE_ROOT_PORT ||
124 type == PCI_EXP_TYPE_DOWNSTREAM ||
125 type == PCI_EXP_TYPE_PCIE_BRIDGE;
128 void pci_vpd_init(struct pci_dev *dev);
129 void pci_vpd_release(struct pci_dev *dev);
130 extern const struct attribute_group pci_dev_vpd_attr_group;
132 /* PCI Virtual Channel */
133 int pci_save_vc_state(struct pci_dev *dev);
134 void pci_restore_vc_state(struct pci_dev *dev);
135 void pci_allocate_vc_save_buffers(struct pci_dev *dev);
137 /* PCI /proc functions */
138 #ifdef CONFIG_PROC_FS
139 int pci_proc_attach_device(struct pci_dev *dev);
140 int pci_proc_detach_device(struct pci_dev *dev);
141 int pci_proc_detach_bus(struct pci_bus *bus);
143 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
144 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
145 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
148 /* Functions for PCI Hotplug drivers to use */
149 int pci_hp_add_bridge(struct pci_dev *dev);
151 #ifdef HAVE_PCI_LEGACY
152 void pci_create_legacy_files(struct pci_bus *bus);
153 void pci_remove_legacy_files(struct pci_bus *bus);
155 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
156 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
159 /* Lock for read/write access to pci device and bus lists */
160 extern struct rw_semaphore pci_bus_sem;
161 extern struct mutex pci_slot_mutex;
163 extern raw_spinlock_t pci_lock;
165 extern unsigned int pci_pm_d3hot_delay;
167 #ifdef CONFIG_PCI_MSI
168 void pci_no_msi(void);
170 static inline void pci_no_msi(void) { }
173 void pci_realloc_get_opt(char *);
175 static inline int pci_no_d1d2(struct pci_dev *dev)
177 unsigned int parent_dstates = 0;
180 parent_dstates = dev->bus->self->no_d1d2;
181 return (dev->no_d1d2 || parent_dstates);
184 extern const struct attribute_group *pci_dev_groups[];
185 extern const struct attribute_group *pcibus_groups[];
186 extern const struct device_type pci_dev_type;
187 extern const struct attribute_group *pci_bus_groups[];
189 extern unsigned long pci_hotplug_io_size;
190 extern unsigned long pci_hotplug_mmio_size;
191 extern unsigned long pci_hotplug_mmio_pref_size;
192 extern unsigned long pci_hotplug_bus_size;
195 * pci_match_one_device - Tell if a PCI device structure has a matching
196 * PCI device id structure
197 * @id: single PCI device id structure to match
198 * @dev: the PCI device structure to match against
200 * Returns the matching pci_device_id structure or %NULL if there is no match.
202 static inline const struct pci_device_id *
203 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
205 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
206 (id->device == PCI_ANY_ID || id->device == dev->device) &&
207 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
208 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
209 !((id->class ^ dev->class) & id->class_mask))
214 /* PCI slot sysfs helper code */
215 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
217 extern struct kset *pci_slots_kset;
219 struct pci_slot_attribute {
220 struct attribute attr;
221 ssize_t (*show)(struct pci_slot *, char *);
222 ssize_t (*store)(struct pci_slot *, const char *, size_t);
224 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
227 pci_bar_unknown, /* Standard PCI BAR probe */
228 pci_bar_io, /* An I/O port BAR */
229 pci_bar_mem32, /* A 32-bit memory BAR */
230 pci_bar_mem64, /* A 64-bit memory BAR */
233 struct device *pci_get_host_bridge_device(struct pci_dev *dev);
234 void pci_put_host_bridge_device(struct device *dev);
236 int pci_configure_extended_tags(struct pci_dev *dev, void *ign);
237 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
239 bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
241 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *pl, int crs_timeout);
243 int pci_setup_device(struct pci_dev *dev);
244 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
245 struct resource *res, unsigned int reg);
246 void pci_configure_ari(struct pci_dev *dev);
247 void __pci_bus_size_bridges(struct pci_bus *bus,
248 struct list_head *realloc_head);
249 void __pci_bus_assign_resources(const struct pci_bus *bus,
250 struct list_head *realloc_head,
251 struct list_head *fail_head);
252 bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
254 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
255 void pci_disable_bridge_window(struct pci_dev *dev);
256 struct pci_bus *pci_bus_get(struct pci_bus *bus);
257 void pci_bus_put(struct pci_bus *bus);
259 /* PCIe link information from Link Capabilities 2 */
260 #define PCIE_LNKCAP2_SLS2SPEED(lnkcap2) \
261 ((lnkcap2) & PCI_EXP_LNKCAP2_SLS_64_0GB ? PCIE_SPEED_64_0GT : \
262 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_32_0GB ? PCIE_SPEED_32_0GT : \
263 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_16_0GB ? PCIE_SPEED_16_0GT : \
264 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_8_0GB ? PCIE_SPEED_8_0GT : \
265 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_5_0GB ? PCIE_SPEED_5_0GT : \
266 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_2_5GB ? PCIE_SPEED_2_5GT : \
269 /* PCIe speed to Mb/s reduced by encoding overhead */
270 #define PCIE_SPEED2MBS_ENC(speed) \
271 ((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \
272 (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
273 (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
274 (speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \
275 (speed) == PCIE_SPEED_5_0GT ? 5000*8/10 : \
276 (speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
279 const char *pci_speed_string(enum pci_bus_speed speed);
280 enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
281 enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
282 u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed,
283 enum pcie_link_width *width);
284 void __pcie_print_link_status(struct pci_dev *dev, bool verbose);
285 void pcie_report_downtraining(struct pci_dev *dev);
286 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
288 /* Single Root I/O Virtualization */
290 int pos; /* Capability position */
291 int nres; /* Number of resources */
292 u32 cap; /* SR-IOV Capabilities */
293 u16 ctrl; /* SR-IOV Control */
294 u16 total_VFs; /* Total VFs associated with the PF */
295 u16 initial_VFs; /* Initial VFs associated with the PF */
296 u16 num_VFs; /* Number of VFs available */
297 u16 offset; /* First VF Routing ID offset */
298 u16 stride; /* Following VF stride */
299 u16 vf_device; /* VF device ID */
300 u32 pgsz; /* Page size for BAR alignment */
301 u8 link; /* Function Dependency Link */
302 u8 max_VF_buses; /* Max buses consumed by VFs */
303 u16 driver_max_VFs; /* Max num VFs driver supports */
304 struct pci_dev *dev; /* Lowest numbered PF */
305 struct pci_dev *self; /* This PF */
306 u32 class; /* VF device */
307 u8 hdr_type; /* VF header type */
308 u16 subsystem_vendor; /* VF subsystem vendor */
309 u16 subsystem_device; /* VF subsystem device */
310 resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
311 bool drivers_autoprobe; /* Auto probing of VFs by driver */
314 #ifdef CONFIG_PCI_DOE
315 void pci_doe_init(struct pci_dev *pdev);
316 void pci_doe_destroy(struct pci_dev *pdev);
317 void pci_doe_disconnected(struct pci_dev *pdev);
319 static inline void pci_doe_init(struct pci_dev *pdev) { }
320 static inline void pci_doe_destroy(struct pci_dev *pdev) { }
321 static inline void pci_doe_disconnected(struct pci_dev *pdev) { }
325 * pci_dev_set_io_state - Set the new error state if possible.
327 * @dev: PCI device to set new error_state
328 * @new: the state we want dev to be in
330 * If the device is experiencing perm_failure, it has to remain in that state.
331 * Any other transition is allowed.
333 * Returns true if state has been changed to the requested state.
335 static inline bool pci_dev_set_io_state(struct pci_dev *dev,
336 pci_channel_state_t new)
338 pci_channel_state_t old;
341 case pci_channel_io_perm_failure:
342 xchg(&dev->error_state, pci_channel_io_perm_failure);
344 case pci_channel_io_frozen:
345 old = cmpxchg(&dev->error_state, pci_channel_io_normal,
346 pci_channel_io_frozen);
347 return old != pci_channel_io_perm_failure;
348 case pci_channel_io_normal:
349 old = cmpxchg(&dev->error_state, pci_channel_io_frozen,
350 pci_channel_io_normal);
351 return old != pci_channel_io_perm_failure;
357 static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
359 pci_dev_set_io_state(dev, pci_channel_io_perm_failure);
360 pci_doe_disconnected(dev);
365 static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
367 return dev->error_state == pci_channel_io_perm_failure;
370 /* pci_dev priv_flags */
371 #define PCI_DEV_ADDED 0
372 #define PCI_DPC_RECOVERED 1
373 #define PCI_DPC_RECOVERING 2
375 static inline void pci_dev_assign_added(struct pci_dev *dev, bool added)
377 assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added);
380 static inline bool pci_dev_is_added(const struct pci_dev *dev)
382 return test_bit(PCI_DEV_ADDED, &dev->priv_flags);
385 #ifdef CONFIG_PCIEAER
386 #include <linux/aer.h>
388 #define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
390 struct aer_err_info {
391 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
396 unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */
397 unsigned int __pad1:5;
398 unsigned int multi_error_valid:1;
400 unsigned int first_error:5;
401 unsigned int __pad2:2;
402 unsigned int tlp_header_valid:1;
404 unsigned int status; /* COR/UNCOR Error Status */
405 unsigned int mask; /* COR/UNCOR Error Mask */
406 struct aer_header_log_regs tlp; /* TLP Header */
409 int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info);
410 void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
411 #endif /* CONFIG_PCIEAER */
413 #ifdef CONFIG_PCIEPORTBUS
414 /* Cached RCEC Endpoint Association */
422 #ifdef CONFIG_PCIE_DPC
423 void pci_save_dpc_state(struct pci_dev *dev);
424 void pci_restore_dpc_state(struct pci_dev *dev);
425 void pci_dpc_init(struct pci_dev *pdev);
426 void dpc_process_error(struct pci_dev *pdev);
427 pci_ers_result_t dpc_reset_link(struct pci_dev *pdev);
428 bool pci_dpc_recovered(struct pci_dev *pdev);
430 static inline void pci_save_dpc_state(struct pci_dev *dev) {}
431 static inline void pci_restore_dpc_state(struct pci_dev *dev) {}
432 static inline void pci_dpc_init(struct pci_dev *pdev) {}
433 static inline bool pci_dpc_recovered(struct pci_dev *pdev) { return false; }
436 #ifdef CONFIG_PCIEPORTBUS
437 void pci_rcec_init(struct pci_dev *dev);
438 void pci_rcec_exit(struct pci_dev *dev);
439 void pcie_link_rcec(struct pci_dev *rcec);
440 void pcie_walk_rcec(struct pci_dev *rcec,
441 int (*cb)(struct pci_dev *, void *),
444 static inline void pci_rcec_init(struct pci_dev *dev) {}
445 static inline void pci_rcec_exit(struct pci_dev *dev) {}
446 static inline void pcie_link_rcec(struct pci_dev *rcec) {}
447 static inline void pcie_walk_rcec(struct pci_dev *rcec,
448 int (*cb)(struct pci_dev *, void *),
452 #ifdef CONFIG_PCI_ATS
453 /* Address Translation Service */
454 void pci_ats_init(struct pci_dev *dev);
455 void pci_restore_ats_state(struct pci_dev *dev);
457 static inline void pci_ats_init(struct pci_dev *d) { }
458 static inline void pci_restore_ats_state(struct pci_dev *dev) { }
459 #endif /* CONFIG_PCI_ATS */
461 #ifdef CONFIG_PCI_PRI
462 void pci_pri_init(struct pci_dev *dev);
463 void pci_restore_pri_state(struct pci_dev *pdev);
465 static inline void pci_pri_init(struct pci_dev *dev) { }
466 static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
469 #ifdef CONFIG_PCI_PASID
470 void pci_pasid_init(struct pci_dev *dev);
471 void pci_restore_pasid_state(struct pci_dev *pdev);
473 static inline void pci_pasid_init(struct pci_dev *dev) { }
474 static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
477 #ifdef CONFIG_PCI_IOV
478 int pci_iov_init(struct pci_dev *dev);
479 void pci_iov_release(struct pci_dev *dev);
480 void pci_iov_remove(struct pci_dev *dev);
481 void pci_iov_update_resource(struct pci_dev *dev, int resno);
482 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
483 void pci_restore_iov_state(struct pci_dev *dev);
484 int pci_iov_bus_range(struct pci_bus *bus);
485 extern const struct attribute_group sriov_pf_dev_attr_group;
486 extern const struct attribute_group sriov_vf_dev_attr_group;
488 static inline int pci_iov_init(struct pci_dev *dev)
492 static inline void pci_iov_release(struct pci_dev *dev)
496 static inline void pci_iov_remove(struct pci_dev *dev)
499 static inline void pci_restore_iov_state(struct pci_dev *dev)
502 static inline int pci_iov_bus_range(struct pci_bus *bus)
507 #endif /* CONFIG_PCI_IOV */
509 #ifdef CONFIG_PCIE_PTM
510 void pci_ptm_init(struct pci_dev *dev);
511 void pci_save_ptm_state(struct pci_dev *dev);
512 void pci_restore_ptm_state(struct pci_dev *dev);
513 void pci_suspend_ptm(struct pci_dev *dev);
514 void pci_resume_ptm(struct pci_dev *dev);
516 static inline void pci_ptm_init(struct pci_dev *dev) { }
517 static inline void pci_save_ptm_state(struct pci_dev *dev) { }
518 static inline void pci_restore_ptm_state(struct pci_dev *dev) { }
519 static inline void pci_suspend_ptm(struct pci_dev *dev) { }
520 static inline void pci_resume_ptm(struct pci_dev *dev) { }
523 unsigned long pci_cardbus_resource_alignment(struct resource *);
525 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
526 struct resource *res)
528 #ifdef CONFIG_PCI_IOV
529 int resno = res - dev->resource;
531 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
532 return pci_sriov_resource_alignment(dev, resno);
534 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
535 return pci_cardbus_resource_alignment(res);
536 return resource_alignment(res);
539 void pci_acs_init(struct pci_dev *dev);
540 #ifdef CONFIG_PCI_QUIRKS
541 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
542 int pci_dev_specific_enable_acs(struct pci_dev *dev);
543 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev);
545 static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
550 static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
554 static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
560 /* PCI error reporting and recovery */
561 pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
562 pci_channel_state_t state,
563 pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev));
565 bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
566 #ifdef CONFIG_PCIEASPM
567 void pcie_aspm_init_link_state(struct pci_dev *pdev);
568 void pcie_aspm_exit_link_state(struct pci_dev *pdev);
569 void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
571 static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { }
572 static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { }
573 static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
576 #ifdef CONFIG_PCIE_ECRC
577 void pcie_set_ecrc_checking(struct pci_dev *dev);
578 void pcie_ecrc_get_policy(char *str);
580 static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
581 static inline void pcie_ecrc_get_policy(char *str) { }
584 struct pci_dev_reset_methods {
587 int (*reset)(struct pci_dev *dev, bool probe);
590 struct pci_reset_fn_method {
591 int (*reset_fn)(struct pci_dev *pdev, bool probe);
595 #ifdef CONFIG_PCI_QUIRKS
596 int pci_dev_specific_reset(struct pci_dev *dev, bool probe);
598 static inline int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
604 #if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
605 int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
606 struct resource *res);
608 static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
609 u16 segment, struct resource *res)
615 int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
616 int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size);
617 static inline u64 pci_rebar_size_to_bytes(int size)
619 return 1ULL << (size + 20);
625 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
626 int of_get_pci_domain_nr(struct device_node *node);
627 int of_pci_get_max_link_speed(struct device_node *node);
628 u32 of_pci_get_slot_power_limit(struct device_node *node,
629 u8 *slot_power_limit_value,
630 u8 *slot_power_limit_scale);
631 int pci_set_of_node(struct pci_dev *dev);
632 void pci_release_of_node(struct pci_dev *dev);
633 void pci_set_bus_of_node(struct pci_bus *bus);
634 void pci_release_bus_of_node(struct pci_bus *bus);
636 int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge);
640 of_pci_parse_bus_range(struct device_node *node, struct resource *res)
646 of_get_pci_domain_nr(struct device_node *node)
652 of_pci_get_max_link_speed(struct device_node *node)
658 of_pci_get_slot_power_limit(struct device_node *node,
659 u8 *slot_power_limit_value,
660 u8 *slot_power_limit_scale)
662 if (slot_power_limit_value)
663 *slot_power_limit_value = 0;
664 if (slot_power_limit_scale)
665 *slot_power_limit_scale = 0;
669 static inline int pci_set_of_node(struct pci_dev *dev) { return 0; }
670 static inline void pci_release_of_node(struct pci_dev *dev) { }
671 static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
672 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
674 static inline int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
679 #endif /* CONFIG_OF */
681 #ifdef CONFIG_PCIEAER
682 void pci_no_aer(void);
683 void pci_aer_init(struct pci_dev *dev);
684 void pci_aer_exit(struct pci_dev *dev);
685 extern const struct attribute_group aer_stats_attr_group;
686 void pci_aer_clear_fatal_status(struct pci_dev *dev);
687 int pci_aer_clear_status(struct pci_dev *dev);
688 int pci_aer_raw_clear_status(struct pci_dev *dev);
690 static inline void pci_no_aer(void) { }
691 static inline void pci_aer_init(struct pci_dev *d) { }
692 static inline void pci_aer_exit(struct pci_dev *d) { }
693 static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
694 static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; }
695 static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
699 int pci_acpi_program_hp_params(struct pci_dev *dev);
700 extern const struct attribute_group pci_dev_acpi_attr_group;
701 void pci_set_acpi_fwnode(struct pci_dev *dev);
702 int pci_dev_acpi_reset(struct pci_dev *dev, bool probe);
703 bool acpi_pci_power_manageable(struct pci_dev *dev);
704 bool acpi_pci_bridge_d3(struct pci_dev *dev);
705 int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state);
706 pci_power_t acpi_pci_get_power_state(struct pci_dev *dev);
707 void acpi_pci_refresh_power_state(struct pci_dev *dev);
708 int acpi_pci_wakeup(struct pci_dev *dev, bool enable);
709 bool acpi_pci_need_resume(struct pci_dev *dev);
710 pci_power_t acpi_pci_choose_state(struct pci_dev *pdev);
712 static inline int pci_dev_acpi_reset(struct pci_dev *dev, bool probe)
716 static inline void pci_set_acpi_fwnode(struct pci_dev *dev) {}
717 static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
721 static inline bool acpi_pci_power_manageable(struct pci_dev *dev)
725 static inline bool acpi_pci_bridge_d3(struct pci_dev *dev)
729 static inline int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
733 static inline pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
737 static inline void acpi_pci_refresh_power_state(struct pci_dev *dev) {}
738 static inline int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
742 static inline bool acpi_pci_need_resume(struct pci_dev *dev)
746 static inline pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
748 return PCI_POWER_ERROR;
752 #ifdef CONFIG_PCIEASPM
753 extern const struct attribute_group aspm_ctrl_attr_group;
756 extern const struct attribute_group pci_dev_reset_method_attr_group;
758 #ifdef CONFIG_X86_INTEL_MID
759 bool pci_use_mid_pm(void);
760 int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state);
761 pci_power_t mid_pci_get_power_state(struct pci_dev *pdev);
763 static inline bool pci_use_mid_pm(void)
767 static inline int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
771 static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
778 * Config Address for PCI Configuration Mechanism #1
780 * See PCI Local Bus Specification, Revision 3.0,
781 * Section 3.2.2.3.2, Figure 3-2, p. 50.
784 #define PCI_CONF1_BUS_SHIFT 16 /* Bus number */
785 #define PCI_CONF1_DEV_SHIFT 11 /* Device number */
786 #define PCI_CONF1_FUNC_SHIFT 8 /* Function number */
788 #define PCI_CONF1_BUS_MASK 0xff
789 #define PCI_CONF1_DEV_MASK 0x1f
790 #define PCI_CONF1_FUNC_MASK 0x7
791 #define PCI_CONF1_REG_MASK 0xfc /* Limit aligned offset to a maximum of 256B */
793 #define PCI_CONF1_ENABLE BIT(31)
794 #define PCI_CONF1_BUS(x) (((x) & PCI_CONF1_BUS_MASK) << PCI_CONF1_BUS_SHIFT)
795 #define PCI_CONF1_DEV(x) (((x) & PCI_CONF1_DEV_MASK) << PCI_CONF1_DEV_SHIFT)
796 #define PCI_CONF1_FUNC(x) (((x) & PCI_CONF1_FUNC_MASK) << PCI_CONF1_FUNC_SHIFT)
797 #define PCI_CONF1_REG(x) ((x) & PCI_CONF1_REG_MASK)
799 #define PCI_CONF1_ADDRESS(bus, dev, func, reg) \
800 (PCI_CONF1_ENABLE | \
801 PCI_CONF1_BUS(bus) | \
802 PCI_CONF1_DEV(dev) | \
803 PCI_CONF1_FUNC(func) | \
807 * Extension of PCI Config Address for accessing extended PCIe registers
809 * No standardized specification, but used on lot of non-ECAM-compliant ARM SoCs
810 * or on AMD Barcelona and new CPUs. Reserved bits [27:24] of PCI Config Address
811 * are used for specifying additional 4 high bits of PCI Express register.
814 #define PCI_CONF1_EXT_REG_SHIFT 16
815 #define PCI_CONF1_EXT_REG_MASK 0xf00
816 #define PCI_CONF1_EXT_REG(x) (((x) & PCI_CONF1_EXT_REG_MASK) << PCI_CONF1_EXT_REG_SHIFT)
818 #define PCI_CONF1_EXT_ADDRESS(bus, dev, func, reg) \
819 (PCI_CONF1_ADDRESS(bus, dev, func, reg) | \
820 PCI_CONF1_EXT_REG(reg))
822 #endif /* DRIVERS_PCI_H */