1#ifndef DRIVERS_PCI_H
2#define DRIVERS_PCI_H
3
4#define PCI_CFG_SPACE_SIZE 256
5#define PCI_CFG_SPACE_EXP_SIZE 4096
6
7extern const unsigned char pcie_link_speed[];
8
9bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
10
11
12
13int pci_create_sysfs_dev_files(struct pci_dev *pdev);
14void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
15#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
16static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
17{ return; }
18static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
19{ return; }
20#else
21void pci_create_firmware_label_files(struct pci_dev *pdev);
22void pci_remove_firmware_label_files(struct pci_dev *pdev);
23#endif
24void pci_cleanup_rom(struct pci_dev *dev);
25#ifdef HAVE_PCI_MMAP
26enum pci_mmap_api {
27 PCI_MMAP_SYSFS,
28 PCI_MMAP_PROCFS
29};
30int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
31 enum pci_mmap_api mmap_api);
32#endif
33int pci_probe_reset_function(struct pci_dev *dev);
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60struct pci_platform_pm_ops {
61 bool (*is_manageable)(struct pci_dev *dev);
62 int (*set_state)(struct pci_dev *dev, pci_power_t state);
63 pci_power_t (*choose_state)(struct pci_dev *dev);
64 int (*sleep_wake)(struct pci_dev *dev, bool enable);
65 int (*run_wake)(struct pci_dev *dev, bool enable);
66 bool (*need_resume)(struct pci_dev *dev);
67};
68
69int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
70void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
71void pci_power_up(struct pci_dev *dev);
72void pci_disable_enabled_device(struct pci_dev *dev);
73int pci_finish_runtime_suspend(struct pci_dev *dev);
74int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
75bool pci_dev_keep_suspended(struct pci_dev *dev);
76void pci_config_pm_runtime_get(struct pci_dev *dev);
77void pci_config_pm_runtime_put(struct pci_dev *dev);
78void pci_pm_init(struct pci_dev *dev);
79void pci_allocate_cap_save_buffers(struct pci_dev *dev);
80void pci_free_cap_save_buffers(struct pci_dev *dev);
81
82static inline void pci_wakeup_event(struct pci_dev *dev)
83{
84
85 pm_wakeup_event(&dev->dev, 100);
86}
87
88static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
89{
90 return !!(pci_dev->subordinate);
91}
92
93struct pci_vpd_ops {
94 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
95 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
96 void (*release)(struct pci_dev *dev);
97};
98
99struct pci_vpd {
100 unsigned int len;
101 const struct pci_vpd_ops *ops;
102 struct bin_attribute *attr;
103};
104
105int pci_vpd_pci22_init(struct pci_dev *dev);
106static inline void pci_vpd_release(struct pci_dev *dev)
107{
108 if (dev->vpd)
109 dev->vpd->ops->release(dev);
110}
111
112
113#ifdef CONFIG_PROC_FS
114int pci_proc_attach_device(struct pci_dev *dev);
115int pci_proc_detach_device(struct pci_dev *dev);
116int pci_proc_detach_bus(struct pci_bus *bus);
117#else
118static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
119static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
120static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
121#endif
122
123
124int pci_hp_add_bridge(struct pci_dev *dev);
125
126#ifdef HAVE_PCI_LEGACY
127void pci_create_legacy_files(struct pci_bus *bus);
128void pci_remove_legacy_files(struct pci_bus *bus);
129#else
130static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
131static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
132#endif
133
134
135extern struct rw_semaphore pci_bus_sem;
136
137extern raw_spinlock_t pci_lock;
138
139extern unsigned int pci_pm_d3_delay;
140
141#ifdef CONFIG_PCI_MSI
142void pci_no_msi(void);
143void pci_msi_init_pci_dev(struct pci_dev *dev);
144#else
145static inline void pci_no_msi(void) { }
146static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
147#endif
148
149void pci_realloc_get_opt(char *);
150
151static inline int pci_no_d1d2(struct pci_dev *dev)
152{
153 unsigned int parent_dstates = 0;
154
155 if (dev->bus->self)
156 parent_dstates = dev->bus->self->no_d1d2;
157 return (dev->no_d1d2 || parent_dstates);
158
159}
160extern const struct attribute_group *pci_dev_groups[];
161extern const struct attribute_group *pcibus_groups[];
162extern struct device_type pci_dev_type;
163extern const struct attribute_group *pci_bus_groups[];
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174static inline const struct pci_device_id *
175pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
176{
177 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
178 (id->device == PCI_ANY_ID || id->device == dev->device) &&
179 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
180 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
181 !((id->class ^ dev->class) & id->class_mask))
182 return id;
183 return NULL;
184}
185
186
187#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
188
189extern struct kset *pci_slots_kset;
190
191struct pci_slot_attribute {
192 struct attribute attr;
193 ssize_t (*show)(struct pci_slot *, char *);
194 ssize_t (*store)(struct pci_slot *, const char *, size_t);
195};
196#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
197
198enum pci_bar_type {
199 pci_bar_unknown,
200 pci_bar_io,
201 pci_bar_mem32,
202 pci_bar_mem64,
203};
204
205bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
206 int crs_timeout);
207int pci_setup_device(struct pci_dev *dev);
208int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
209 struct resource *res, unsigned int reg);
210int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
211void pci_configure_ari(struct pci_dev *dev);
212void __pci_bus_size_bridges(struct pci_bus *bus,
213 struct list_head *realloc_head);
214void __pci_bus_assign_resources(const struct pci_bus *bus,
215 struct list_head *realloc_head,
216 struct list_head *fail_head);
217bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
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225static inline int pci_ari_enabled(struct pci_bus *bus)
226{
227 return bus->self && bus->self->ari_enabled;
228}
229
230void pci_reassigndev_resource_alignment(struct pci_dev *dev);
231void pci_disable_bridge_window(struct pci_dev *dev);
232
233
234struct pci_sriov {
235 int pos;
236 int nres;
237 u32 cap;
238 u16 ctrl;
239 u16 total_VFs;
240 u16 initial_VFs;
241 u16 num_VFs;
242 u16 offset;
243 u16 stride;
244 u32 pgsz;
245 u8 link;
246 u8 max_VF_buses;
247 u16 driver_max_VFs;
248 struct pci_dev *dev;
249 struct pci_dev *self;
250 struct mutex lock;
251 resource_size_t barsz[PCI_SRIOV_NUM_BARS];
252};
253
254#ifdef CONFIG_PCI_ATS
255void pci_restore_ats_state(struct pci_dev *dev);
256#else
257static inline void pci_restore_ats_state(struct pci_dev *dev)
258{
259}
260#endif
261
262#ifdef CONFIG_PCI_IOV
263int pci_iov_init(struct pci_dev *dev);
264void pci_iov_release(struct pci_dev *dev);
265int pci_iov_resource_bar(struct pci_dev *dev, int resno);
266resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
267void pci_restore_iov_state(struct pci_dev *dev);
268int pci_iov_bus_range(struct pci_bus *bus);
269
270#else
271static inline int pci_iov_init(struct pci_dev *dev)
272{
273 return -ENODEV;
274}
275static inline void pci_iov_release(struct pci_dev *dev)
276
277{
278}
279static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
280{
281 return 0;
282}
283static inline void pci_restore_iov_state(struct pci_dev *dev)
284{
285}
286static inline int pci_iov_bus_range(struct pci_bus *bus)
287{
288 return 0;
289}
290
291#endif
292
293unsigned long pci_cardbus_resource_alignment(struct resource *);
294
295static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
296 struct resource *res)
297{
298#ifdef CONFIG_PCI_IOV
299 int resno = res - dev->resource;
300
301 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
302 return pci_sriov_resource_alignment(dev, resno);
303#endif
304 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
305 return pci_cardbus_resource_alignment(res);
306 return resource_alignment(res);
307}
308
309void pci_enable_acs(struct pci_dev *dev);
310
311struct pci_dev_reset_methods {
312 u16 vendor;
313 u16 device;
314 int (*reset)(struct pci_dev *dev, int probe);
315};
316
317#ifdef CONFIG_PCI_QUIRKS
318int pci_dev_specific_reset(struct pci_dev *dev, int probe);
319#else
320static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
321{
322 return -ENOTTY;
323}
324#endif
325
326struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
327
328#endif
329