1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * pci.h |
4 | * |
5 | * PCI defines and function prototypes |
6 | * Copyright 1994, Drew Eckhardt |
7 | * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
8 | * |
9 | * For more information, please consult the following manuals (look at |
10 | * http://www.pcisig.com/ for how to get them): |
11 | * |
12 | * PCI BIOS Specification |
13 | * PCI Local Bus Specification |
14 | * PCI to PCI Bridge Specification |
15 | * PCI System Design Guide |
16 | */ |
17 | #ifndef LINUX_PCI_H |
18 | #define LINUX_PCI_H |
19 | |
20 | |
21 | #include <linux/mod_devicetable.h> |
22 | |
23 | #include <linux/types.h> |
24 | #include <linux/init.h> |
25 | #include <linux/ioport.h> |
26 | #include <linux/list.h> |
27 | #include <linux/compiler.h> |
28 | #include <linux/errno.h> |
29 | #include <linux/kobject.h> |
30 | #include <linux/atomic.h> |
31 | #include <linux/device.h> |
32 | #include <linux/interrupt.h> |
33 | #include <linux/io.h> |
34 | #include <linux/resource_ext.h> |
35 | #include <uapi/linux/pci.h> |
36 | |
37 | #include <linux/pci_ids.h> |
38 | |
39 | /* |
40 | * The PCI interface treats multi-function devices as independent |
41 | * devices. The slot/function address of each device is encoded |
42 | * in a single byte as follows: |
43 | * |
44 | * 7:3 = slot |
45 | * 2:0 = function |
46 | * |
47 | * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h. |
48 | * In the interest of not exposing interfaces to user-space unnecessarily, |
49 | * the following kernel-only defines are being added here. |
50 | */ |
51 | #define PCI_DEVID(bus, devfn) ((((u16)(bus)) << 8) | (devfn)) |
52 | /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ |
53 | #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) |
54 | |
55 | /* pci_slot represents a physical slot */ |
56 | struct pci_slot { |
57 | struct pci_bus *bus; /* Bus this slot is on */ |
58 | struct list_head list; /* Node in list of slots */ |
59 | struct hotplug_slot *hotplug; /* Hotplug info (move here) */ |
60 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ |
61 | struct kobject kobj; |
62 | }; |
63 | |
64 | static inline const char *pci_slot_name(const struct pci_slot *slot) |
65 | { |
66 | return kobject_name(&slot->kobj); |
67 | } |
68 | |
69 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
70 | enum pci_mmap_state { |
71 | pci_mmap_io, |
72 | pci_mmap_mem |
73 | }; |
74 | |
75 | /* For PCI devices, the region numbers are assigned this way: */ |
76 | enum { |
77 | /* #0-5: standard PCI resources */ |
78 | PCI_STD_RESOURCES, |
79 | PCI_STD_RESOURCE_END = 5, |
80 | |
81 | /* #6: expansion ROM resource */ |
82 | PCI_ROM_RESOURCE, |
83 | |
84 | /* Device-specific resources */ |
85 | #ifdef CONFIG_PCI_IOV |
86 | PCI_IOV_RESOURCES, |
87 | PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, |
88 | #endif |
89 | |
90 | /* Resources assigned to buses behind the bridge */ |
91 | #define PCI_BRIDGE_RESOURCE_NUM 4 |
92 | |
93 | PCI_BRIDGE_RESOURCES, |
94 | PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + |
95 | PCI_BRIDGE_RESOURCE_NUM - 1, |
96 | |
97 | /* Total resources associated with a PCI device */ |
98 | PCI_NUM_RESOURCES, |
99 | |
100 | /* Preserve this for compatibility */ |
101 | DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
102 | }; |
103 | |
104 | /** |
105 | * enum pci_interrupt_pin - PCI INTx interrupt values |
106 | * @PCI_INTERRUPT_UNKNOWN: Unknown or unassigned interrupt |
107 | * @PCI_INTERRUPT_INTA: PCI INTA pin |
108 | * @PCI_INTERRUPT_INTB: PCI INTB pin |
109 | * @PCI_INTERRUPT_INTC: PCI INTC pin |
110 | * @PCI_INTERRUPT_INTD: PCI INTD pin |
111 | * |
112 | * Corresponds to values for legacy PCI INTx interrupts, as can be found in the |
113 | * PCI_INTERRUPT_PIN register. |
114 | */ |
115 | enum pci_interrupt_pin { |
116 | PCI_INTERRUPT_UNKNOWN, |
117 | PCI_INTERRUPT_INTA, |
118 | PCI_INTERRUPT_INTB, |
119 | PCI_INTERRUPT_INTC, |
120 | PCI_INTERRUPT_INTD, |
121 | }; |
122 | |
123 | /* The number of legacy PCI INTx interrupts */ |
124 | #define PCI_NUM_INTX 4 |
125 | |
126 | /* |
127 | * pci_power_t values must match the bits in the Capabilities PME_Support |
128 | * and Control/Status PowerState fields in the Power Management capability. |
129 | */ |
130 | typedef int __bitwise pci_power_t; |
131 | |
132 | #define PCI_D0 ((pci_power_t __force) 0) |
133 | #define PCI_D1 ((pci_power_t __force) 1) |
134 | #define PCI_D2 ((pci_power_t __force) 2) |
135 | #define PCI_D3hot ((pci_power_t __force) 3) |
136 | #define PCI_D3cold ((pci_power_t __force) 4) |
137 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
138 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
139 | |
140 | /* Remember to update this when the list above changes! */ |
141 | extern const char *pci_power_names[]; |
142 | |
143 | static inline const char *pci_power_name(pci_power_t state) |
144 | { |
145 | return pci_power_names[1 + (__force int) state]; |
146 | } |
147 | |
148 | #define PCI_PM_D2_DELAY 200 |
149 | #define PCI_PM_D3_WAIT 10 |
150 | #define PCI_PM_D3COLD_WAIT 100 |
151 | #define PCI_PM_BUS_WAIT 50 |
152 | |
153 | /** |
154 | * The pci_channel state describes connectivity between the CPU and |
155 | * the PCI device. If some PCI bus between here and the PCI device |
156 | * has crashed or locked up, this info is reflected here. |
157 | */ |
158 | typedef unsigned int __bitwise pci_channel_state_t; |
159 | |
160 | enum pci_channel_state { |
161 | /* I/O channel is in normal state */ |
162 | pci_channel_io_normal = (__force pci_channel_state_t) 1, |
163 | |
164 | /* I/O to channel is blocked */ |
165 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, |
166 | |
167 | /* PCI card is dead */ |
168 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, |
169 | }; |
170 | |
171 | typedef unsigned int __bitwise pcie_reset_state_t; |
172 | |
173 | enum pcie_reset_state { |
174 | /* Reset is NOT asserted (Use to deassert reset) */ |
175 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, |
176 | |
177 | /* Use #PERST to reset PCIe device */ |
178 | pcie_warm_reset = (__force pcie_reset_state_t) 2, |
179 | |
180 | /* Use PCIe Hot Reset to reset device */ |
181 | pcie_hot_reset = (__force pcie_reset_state_t) 3 |
182 | }; |
183 | |
184 | typedef unsigned short __bitwise pci_dev_flags_t; |
185 | enum pci_dev_flags { |
186 | /* INTX_DISABLE in PCI_COMMAND register disables MSI too */ |
187 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) (1 << 0), |
188 | /* Device configuration is irrevocably lost if disabled into D3 */ |
189 | PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) (1 << 1), |
190 | /* Provide indication device is assigned by a Virtual Machine Manager */ |
191 | PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) (1 << 2), |
192 | /* Flag for quirk use to store if quirk-specific ACS is enabled */ |
193 | PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) (1 << 3), |
194 | /* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */ |
195 | PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5), |
196 | /* Do not use bus resets for device */ |
197 | PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6), |
198 | /* Do not use PM reset even if device advertises NoSoftRst- */ |
199 | PCI_DEV_FLAGS_NO_PM_RESET = (__force pci_dev_flags_t) (1 << 7), |
200 | /* Get VPD from function 0 VPD */ |
201 | PCI_DEV_FLAGS_VPD_REF_F0 = (__force pci_dev_flags_t) (1 << 8), |
202 | /* A non-root bridge where translation occurs, stop alias search here */ |
203 | PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT = (__force pci_dev_flags_t) (1 << 9), |
204 | /* Do not use FLR even if device advertises PCI_AF_CAP */ |
205 | PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10), |
206 | /* Don't use Relaxed Ordering for TLPs directed at this device */ |
207 | PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11), |
208 | }; |
209 | |
210 | enum pci_irq_reroute_variant { |
211 | INTEL_IRQ_REROUTE_VARIANT = 1, |
212 | MAX_IRQ_REROUTE_VARIANTS = 3 |
213 | }; |
214 | |
215 | typedef unsigned short __bitwise pci_bus_flags_t; |
216 | enum pci_bus_flags { |
217 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
218 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, |
219 | PCI_BUS_FLAGS_NO_AERSID = (__force pci_bus_flags_t) 4, |
220 | PCI_BUS_FLAGS_NO_EXTCFG = (__force pci_bus_flags_t) 8, |
221 | }; |
222 | |
223 | /* Values from Link Status register, PCIe r3.1, sec 7.8.8 */ |
224 | enum pcie_link_width { |
225 | PCIE_LNK_WIDTH_RESRV = 0x00, |
226 | PCIE_LNK_X1 = 0x01, |
227 | PCIE_LNK_X2 = 0x02, |
228 | PCIE_LNK_X4 = 0x04, |
229 | PCIE_LNK_X8 = 0x08, |
230 | PCIE_LNK_X12 = 0x0c, |
231 | PCIE_LNK_X16 = 0x10, |
232 | PCIE_LNK_X32 = 0x20, |
233 | PCIE_LNK_WIDTH_UNKNOWN = 0xff, |
234 | }; |
235 | |
236 | /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
237 | enum pci_bus_speed { |
238 | PCI_SPEED_33MHz = 0x00, |
239 | PCI_SPEED_66MHz = 0x01, |
240 | PCI_SPEED_66MHz_PCIX = 0x02, |
241 | PCI_SPEED_100MHz_PCIX = 0x03, |
242 | PCI_SPEED_133MHz_PCIX = 0x04, |
243 | PCI_SPEED_66MHz_PCIX_ECC = 0x05, |
244 | PCI_SPEED_100MHz_PCIX_ECC = 0x06, |
245 | PCI_SPEED_133MHz_PCIX_ECC = 0x07, |
246 | PCI_SPEED_66MHz_PCIX_266 = 0x09, |
247 | PCI_SPEED_100MHz_PCIX_266 = 0x0a, |
248 | PCI_SPEED_133MHz_PCIX_266 = 0x0b, |
249 | AGP_UNKNOWN = 0x0c, |
250 | AGP_1X = 0x0d, |
251 | AGP_2X = 0x0e, |
252 | AGP_4X = 0x0f, |
253 | AGP_8X = 0x10, |
254 | PCI_SPEED_66MHz_PCIX_533 = 0x11, |
255 | PCI_SPEED_100MHz_PCIX_533 = 0x12, |
256 | PCI_SPEED_133MHz_PCIX_533 = 0x13, |
257 | PCIE_SPEED_2_5GT = 0x14, |
258 | PCIE_SPEED_5_0GT = 0x15, |
259 | PCIE_SPEED_8_0GT = 0x16, |
260 | PCIE_SPEED_16_0GT = 0x17, |
261 | PCI_SPEED_UNKNOWN = 0xff, |
262 | }; |
263 | |
264 | enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev); |
265 | enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev); |
266 | |
267 | struct pci_cap_saved_data { |
268 | u16 cap_nr; |
269 | bool cap_extended; |
270 | unsigned int size; |
271 | u32 data[0]; |
272 | }; |
273 | |
274 | struct pci_cap_saved_state { |
275 | struct hlist_node next; |
276 | struct pci_cap_saved_data cap; |
277 | }; |
278 | |
279 | struct irq_affinity; |
280 | struct pcie_link_state; |
281 | struct pci_vpd; |
282 | struct pci_sriov; |
283 | struct pci_ats; |
284 | struct pci_p2pdma; |
285 | |
286 | /* The pci_dev structure describes PCI devices */ |
287 | struct pci_dev { |
288 | struct list_head bus_list; /* Node in per-bus list */ |
289 | struct pci_bus *bus; /* Bus this device is on */ |
290 | struct pci_bus *subordinate; /* Bus this device bridges to */ |
291 | |
292 | void *sysdata; /* Hook for sys-specific extension */ |
293 | struct proc_dir_entry *procent; /* Device entry in /proc/bus/pci */ |
294 | struct pci_slot *slot; /* Physical slot this device is in */ |
295 | |
296 | unsigned int devfn; /* Encoded device & function index */ |
297 | unsigned short vendor; |
298 | unsigned short device; |
299 | unsigned short subsystem_vendor; |
300 | unsigned short subsystem_device; |
301 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
302 | u8 revision; /* PCI revision, low byte of class word */ |
303 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
304 | #ifdef CONFIG_PCIEAER |
305 | u16 aer_cap; /* AER capability offset */ |
306 | struct aer_stats *aer_stats; /* AER stats for this device */ |
307 | #endif |
308 | u8 pcie_cap; /* PCIe capability offset */ |
309 | u8 msi_cap; /* MSI capability offset */ |
310 | u8 msix_cap; /* MSI-X capability offset */ |
311 | u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */ |
312 | u8 rom_base_reg; /* Config register controlling ROM */ |
313 | u8 pin; /* Interrupt pin this device uses */ |
314 | u16 pcie_flags_reg; /* Cached PCIe Capabilities Register */ |
315 | unsigned long *dma_alias_mask;/* Mask of enabled devfn aliases */ |
316 | |
317 | struct pci_driver *driver; /* Driver bound to this device */ |
318 | u64 dma_mask; /* Mask of the bits of bus address this |
319 | device implements. Normally this is |
320 | 0xffffffff. You only need to change |
321 | this if your device has broken DMA |
322 | or supports 64-bit transfers. */ |
323 | |
324 | struct device_dma_parameters dma_parms; |
325 | |
326 | pci_power_t current_state; /* Current operating state. In ACPI, |
327 | this is D0-D3, D0 being fully |
328 | functional, and D3 being off. */ |
329 | unsigned int imm_ready:1; /* Supports Immediate Readiness */ |
330 | u8 pm_cap; /* PM capability offset */ |
331 | unsigned int pme_support:5; /* Bitmask of states from which PME# |
332 | can be generated */ |
333 | unsigned int pme_poll:1; /* Poll device's PME status bit */ |
334 | unsigned int d1_support:1; /* Low power state D1 is supported */ |
335 | unsigned int d2_support:1; /* Low power state D2 is supported */ |
336 | unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
337 | unsigned int no_d3cold:1; /* D3cold is forbidden */ |
338 | unsigned int bridge_d3:1; /* Allow D3 for bridge */ |
339 | unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ |
340 | unsigned int mmio_always_on:1; /* Disallow turning off io/mem |
341 | decoding during BAR sizing */ |
342 | unsigned int wakeup_prepared:1; |
343 | unsigned int runtime_d3cold:1; /* Whether go through runtime |
344 | D3cold, not set for devices |
345 | powered on/off by the |
346 | corresponding bridge */ |
347 | unsigned int ignore_hotplug:1; /* Ignore hotplug events */ |
348 | unsigned int hotplug_user_indicators:1; /* SlotCtl indicators |
349 | controlled exclusively by |
350 | user sysfs */ |
351 | unsigned int d3_delay; /* D3->D0 transition time in ms */ |
352 | unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
353 | |
354 | #ifdef CONFIG_PCIEASPM |
355 | struct pcie_link_state *link_state; /* ASPM link state */ |
356 | unsigned int ltr_path:1; /* Latency Tolerance Reporting |
357 | supported from root to here */ |
358 | #endif |
359 | unsigned int eetlp_prefix_path:1; /* End-to-End TLP Prefix */ |
360 | |
361 | pci_channel_state_t error_state; /* Current connectivity state */ |
362 | struct device dev; /* Generic device interface */ |
363 | |
364 | int cfg_size; /* Size of config space */ |
365 | |
366 | /* |
367 | * Instead of touching interrupt line and base address registers |
368 | * directly, use the values stored here. They might be different! |
369 | */ |
370 | unsigned int irq; |
371 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
372 | |
373 | bool match_driver; /* Skip attaching driver */ |
374 | |
375 | unsigned int transparent:1; /* Subtractive decode bridge */ |
376 | unsigned int io_window:1; /* Bridge has I/O window */ |
377 | unsigned int pref_window:1; /* Bridge has pref mem window */ |
378 | unsigned int pref_64_window:1; /* Pref mem window is 64-bit */ |
379 | unsigned int multifunction:1; /* Multi-function device */ |
380 | |
381 | unsigned int is_busmaster:1; /* Is busmaster */ |
382 | unsigned int no_msi:1; /* May not use MSI */ |
383 | unsigned int no_64bit_msi:1; /* May only use 32-bit MSIs */ |
384 | unsigned int block_cfg_access:1; /* Config space access blocked */ |
385 | unsigned int broken_parity_status:1; /* Generates false positive parity */ |
386 | unsigned int irq_reroute_variant:2; /* Needs IRQ rerouting variant */ |
387 | unsigned int msi_enabled:1; |
388 | unsigned int msix_enabled:1; |
389 | unsigned int ari_enabled:1; /* ARI forwarding */ |
390 | unsigned int ats_enabled:1; /* Address Translation Svc */ |
391 | unsigned int pasid_enabled:1; /* Process Address Space ID */ |
392 | unsigned int pri_enabled:1; /* Page Request Interface */ |
393 | unsigned int is_managed:1; |
394 | unsigned int needs_freset:1; /* Requires fundamental reset */ |
395 | unsigned int state_saved:1; |
396 | unsigned int is_physfn:1; |
397 | unsigned int is_virtfn:1; |
398 | unsigned int reset_fn:1; |
399 | unsigned int is_hotplug_bridge:1; |
400 | unsigned int shpc_managed:1; /* SHPC owned by shpchp */ |
401 | unsigned int is_thunderbolt:1; /* Thunderbolt controller */ |
402 | /* |
403 | * Devices marked being untrusted are the ones that can potentially |
404 | * execute DMA attacks and similar. They are typically connected |
405 | * through external ports such as Thunderbolt but not limited to |
406 | * that. When an IOMMU is enabled they should be getting full |
407 | * mappings to make sure they cannot access arbitrary memory. |
408 | */ |
409 | unsigned int untrusted:1; |
410 | unsigned int __aer_firmware_first_valid:1; |
411 | unsigned int __aer_firmware_first:1; |
412 | unsigned int broken_intx_masking:1; /* INTx masking can't be used */ |
413 | unsigned int io_window_1k:1; /* Intel bridge 1K I/O windows */ |
414 | unsigned int irq_managed:1; |
415 | unsigned int has_secondary_link:1; |
416 | unsigned int non_compliant_bars:1; /* Broken BARs; ignore them */ |
417 | unsigned int is_probed:1; /* Device probing in progress */ |
418 | unsigned int link_active_reporting:1;/* Device capable of reporting link active */ |
419 | unsigned int no_vf_scan:1; /* Don't scan for VFs after IOV enablement */ |
420 | pci_dev_flags_t dev_flags; |
421 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
422 | |
423 | u32 saved_config_space[16]; /* Config space saved at suspend time */ |
424 | struct hlist_head saved_cap_space; |
425 | struct bin_attribute *rom_attr; /* Attribute descriptor for sysfs ROM entry */ |
426 | int rom_attr_enabled; /* Display of ROM attribute enabled? */ |
427 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
428 | struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
429 | |
430 | #ifdef CONFIG_HOTPLUG_PCI_PCIE |
431 | unsigned int broken_cmd_compl:1; /* No compl for some cmds */ |
432 | #endif |
433 | #ifdef CONFIG_PCIE_PTM |
434 | unsigned int ptm_root:1; |
435 | unsigned int ptm_enabled:1; |
436 | u8 ptm_granularity; |
437 | #endif |
438 | #ifdef CONFIG_PCI_MSI |
439 | const struct attribute_group **msi_irq_groups; |
440 | #endif |
441 | struct pci_vpd *vpd; |
442 | #ifdef CONFIG_PCI_ATS |
443 | union { |
444 | struct pci_sriov *sriov; /* PF: SR-IOV info */ |
445 | struct pci_dev *physfn; /* VF: related PF */ |
446 | }; |
447 | u16 ats_cap; /* ATS Capability offset */ |
448 | u8 ats_stu; /* ATS Smallest Translation Unit */ |
449 | atomic_t ats_ref_cnt; /* Number of VFs with ATS enabled */ |
450 | #endif |
451 | #ifdef CONFIG_PCI_PRI |
452 | u32 pri_reqs_alloc; /* Number of PRI requests allocated */ |
453 | #endif |
454 | #ifdef CONFIG_PCI_PASID |
455 | u16 pasid_features; |
456 | #endif |
457 | #ifdef CONFIG_PCI_P2PDMA |
458 | struct pci_p2pdma *p2pdma; |
459 | #endif |
460 | phys_addr_t rom; /* Physical address if not from BAR */ |
461 | size_t romlen; /* Length if not from BAR */ |
462 | char *driver_override; /* Driver name to force a match */ |
463 | |
464 | unsigned long priv_flags; /* Private flags for the PCI driver */ |
465 | }; |
466 | |
467 | static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
468 | { |
469 | #ifdef CONFIG_PCI_IOV |
470 | if (dev->is_virtfn) |
471 | dev = dev->physfn; |
472 | #endif |
473 | return dev; |
474 | } |
475 | |
476 | struct pci_dev *pci_alloc_dev(struct pci_bus *bus); |
477 | |
478 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
479 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
480 | |
481 | static inline int pci_channel_offline(struct pci_dev *pdev) |
482 | { |
483 | return (pdev->error_state != pci_channel_io_normal); |
484 | } |
485 | |
486 | struct pci_host_bridge { |
487 | struct device dev; |
488 | struct pci_bus *bus; /* Root bus */ |
489 | struct pci_ops *ops; |
490 | void *sysdata; |
491 | int busnr; |
492 | struct list_head windows; /* resource_entry */ |
493 | u8 (*swizzle_irq)(struct pci_dev *, u8 *); /* Platform IRQ swizzler */ |
494 | int (*map_irq)(const struct pci_dev *, u8, u8); |
495 | void (*release_fn)(struct pci_host_bridge *); |
496 | void *release_data; |
497 | struct msi_controller *msi; |
498 | unsigned int ignore_reset_delay:1; /* For entire hierarchy */ |
499 | unsigned int no_ext_tags:1; /* No Extended Tags */ |
500 | unsigned int native_aer:1; /* OS may use PCIe AER */ |
501 | unsigned int native_pcie_hotplug:1; /* OS may use PCIe hotplug */ |
502 | unsigned int native_shpc_hotplug:1; /* OS may use SHPC hotplug */ |
503 | unsigned int native_pme:1; /* OS may use PCIe PME */ |
504 | unsigned int native_ltr:1; /* OS may use PCIe LTR */ |
505 | /* Resource alignment requirements */ |
506 | resource_size_t (*align_resource)(struct pci_dev *dev, |
507 | const struct resource *res, |
508 | resource_size_t start, |
509 | resource_size_t size, |
510 | resource_size_t align); |
511 | unsigned long private[0] ____cacheline_aligned; |
512 | }; |
513 | |
514 | #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
515 | |
516 | static inline void *pci_host_bridge_priv(struct pci_host_bridge *bridge) |
517 | { |
518 | return (void *)bridge->private; |
519 | } |
520 | |
521 | static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv) |
522 | { |
523 | return container_of(priv, struct pci_host_bridge, private); |
524 | } |
525 | |
526 | struct pci_host_bridge *pci_alloc_host_bridge(size_t priv); |
527 | struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev, |
528 | size_t priv); |
529 | void pci_free_host_bridge(struct pci_host_bridge *bridge); |
530 | struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus); |
531 | |
532 | void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
533 | void (*release_fn)(struct pci_host_bridge *), |
534 | void *release_data); |
535 | |
536 | int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
537 | |
538 | /* |
539 | * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond |
540 | * to P2P or CardBus bridge windows) go in a table. Additional ones (for |
541 | * buses below host bridges or subtractive decode bridges) go in the list. |
542 | * Use pci_bus_for_each_resource() to iterate through all the resources. |
543 | */ |
544 | |
545 | /* |
546 | * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly |
547 | * and there's no way to program the bridge with the details of the window. |
548 | * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- |
549 | * decode bit set, because they are explicit and can be programmed with _SRS. |
550 | */ |
551 | #define PCI_SUBTRACTIVE_DECODE 0x1 |
552 | |
553 | struct pci_bus_resource { |
554 | struct list_head list; |
555 | struct resource *res; |
556 | unsigned int flags; |
557 | }; |
558 | |
559 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ |
560 | |
561 | struct pci_bus { |
562 | struct list_head node; /* Node in list of buses */ |
563 | struct pci_bus *parent; /* Parent bus this bridge is on */ |
564 | struct list_head children; /* List of child buses */ |
565 | struct list_head devices; /* List of devices on this bus */ |
566 | struct pci_dev *self; /* Bridge device as seen by parent */ |
567 | struct list_head slots; /* List of slots on this bus; |
568 | protected by pci_slot_mutex */ |
569 | struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
570 | struct list_head resources; /* Address space routed to this bus */ |
571 | struct resource busn_res; /* Bus numbers routed to this bus */ |
572 | |
573 | struct pci_ops *ops; /* Configuration access functions */ |
574 | struct msi_controller *msi; /* MSI controller */ |
575 | void *sysdata; /* Hook for sys-specific extension */ |
576 | struct proc_dir_entry *procdir; /* Directory entry in /proc/bus/pci */ |
577 | |
578 | unsigned char number; /* Bus number */ |
579 | unsigned char primary; /* Number of primary bridge */ |
580 | unsigned char max_bus_speed; /* enum pci_bus_speed */ |
581 | unsigned char cur_bus_speed; /* enum pci_bus_speed */ |
582 | #ifdef CONFIG_PCI_DOMAINS_GENERIC |
583 | int domain_nr; |
584 | #endif |
585 | |
586 | char name[48]; |
587 | |
588 | unsigned short bridge_ctl; /* Manage NO_ISA/FBB/et al behaviors */ |
589 | pci_bus_flags_t bus_flags; /* Inherited by child buses */ |
590 | struct device *bridge; |
591 | struct device dev; |
592 | struct bin_attribute *legacy_io; /* Legacy I/O for this bus */ |
593 | struct bin_attribute *legacy_mem; /* Legacy mem */ |
594 | unsigned int is_added:1; |
595 | }; |
596 | |
597 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
598 | |
599 | /* |
600 | * Returns true if the PCI bus is root (behind host-PCI bridge), |
601 | * false otherwise |
602 | * |
603 | * Some code assumes that "bus->self == NULL" means that bus is a root bus. |
604 | * This is incorrect because "virtual" buses added for SR-IOV (via |
605 | * virtfn_add_bus()) have "bus->self == NULL" but are not root buses. |
606 | */ |
607 | static inline bool pci_is_root_bus(struct pci_bus *pbus) |
608 | { |
609 | return !(pbus->parent); |
610 | } |
611 | |
612 | /** |
613 | * pci_is_bridge - check if the PCI device is a bridge |
614 | * @dev: PCI device |
615 | * |
616 | * Return true if the PCI device is bridge whether it has subordinate |
617 | * or not. |
618 | */ |
619 | static inline bool pci_is_bridge(struct pci_dev *dev) |
620 | { |
621 | return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || |
622 | dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; |
623 | } |
624 | |
625 | #define for_each_pci_bridge(dev, bus) \ |
626 | list_for_each_entry(dev, &bus->devices, bus_list) \ |
627 | if (!pci_is_bridge(dev)) {} else |
628 | |
629 | static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) |
630 | { |
631 | dev = pci_physfn(dev); |
632 | if (pci_is_root_bus(dev->bus)) |
633 | return NULL; |
634 | |
635 | return dev->bus->self; |
636 | } |
637 | |
638 | struct device *pci_get_host_bridge_device(struct pci_dev *dev); |
639 | void pci_put_host_bridge_device(struct device *dev); |
640 | |
641 | #ifdef CONFIG_PCI_MSI |
642 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) |
643 | { |
644 | return pci_dev->msi_enabled || pci_dev->msix_enabled; |
645 | } |
646 | #else |
647 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } |
648 | #endif |
649 | |
650 | /* Error values that may be returned by PCI functions */ |
651 | #define PCIBIOS_SUCCESSFUL 0x00 |
652 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
653 | #define PCIBIOS_BAD_VENDOR_ID 0x83 |
654 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
655 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
656 | #define PCIBIOS_SET_FAILED 0x88 |
657 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
658 | |
659 | /* Translate above to generic errno for passing back through non-PCI code */ |
660 | static inline int pcibios_err_to_errno(int err) |
661 | { |
662 | if (err <= PCIBIOS_SUCCESSFUL) |
663 | return err; /* Assume already errno */ |
664 | |
665 | switch (err) { |
666 | case PCIBIOS_FUNC_NOT_SUPPORTED: |
667 | return -ENOENT; |
668 | case PCIBIOS_BAD_VENDOR_ID: |
669 | return -ENOTTY; |
670 | case PCIBIOS_DEVICE_NOT_FOUND: |
671 | return -ENODEV; |
672 | case PCIBIOS_BAD_REGISTER_NUMBER: |
673 | return -EFAULT; |
674 | case PCIBIOS_SET_FAILED: |
675 | return -EIO; |
676 | case PCIBIOS_BUFFER_TOO_SMALL: |
677 | return -ENOSPC; |
678 | } |
679 | |
680 | return -ERANGE; |
681 | } |
682 | |
683 | /* Low-level architecture-dependent routines */ |
684 | |
685 | struct pci_ops { |
686 | int (*add_bus)(struct pci_bus *bus); |
687 | void (*remove_bus)(struct pci_bus *bus); |
688 | void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where); |
689 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
690 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
691 | }; |
692 | |
693 | /* |
694 | * ACPI needs to be able to access PCI config space before we've done a |
695 | * PCI bus scan and created pci_bus structures. |
696 | */ |
697 | int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, |
698 | int reg, int len, u32 *val); |
699 | int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, |
700 | int reg, int len, u32 val); |
701 | |
702 | #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT |
703 | typedef u64 pci_bus_addr_t; |
704 | #else |
705 | typedef u32 pci_bus_addr_t; |
706 | #endif |
707 | |
708 | struct pci_bus_region { |
709 | pci_bus_addr_t start; |
710 | pci_bus_addr_t end; |
711 | }; |
712 | |
713 | struct pci_dynids { |
714 | spinlock_t lock; /* Protects list, index */ |
715 | struct list_head list; /* For IDs added at runtime */ |
716 | }; |
717 | |
718 | |
719 | /* |
720 | * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides |
721 | * a set of callbacks in struct pci_error_handlers, that device driver |
722 | * will be notified of PCI bus errors, and will be driven to recovery |
723 | * when an error occurs. |
724 | */ |
725 | |
726 | typedef unsigned int __bitwise pci_ers_result_t; |
727 | |
728 | enum pci_ers_result { |
729 | /* No result/none/not supported in device driver */ |
730 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, |
731 | |
732 | /* Device driver can recover without slot reset */ |
733 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, |
734 | |
735 | /* Device driver wants slot to be reset */ |
736 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, |
737 | |
738 | /* Device has completely failed, is unrecoverable */ |
739 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, |
740 | |
741 | /* Device driver is fully recovered and operational */ |
742 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, |
743 | |
744 | /* No AER capabilities registered for the driver */ |
745 | PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, |
746 | }; |
747 | |
748 | /* PCI bus error event callbacks */ |
749 | struct pci_error_handlers { |
750 | /* PCI bus error detected on this device */ |
751 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, |
752 | enum pci_channel_state error); |
753 | |
754 | /* MMIO has been re-enabled, but not DMA */ |
755 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); |
756 | |
757 | /* PCI slot has been reset */ |
758 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); |
759 | |
760 | /* PCI function reset prepare or completed */ |
761 | void (*reset_prepare)(struct pci_dev *dev); |
762 | void (*reset_done)(struct pci_dev *dev); |
763 | |
764 | /* Device driver may resume normal operations */ |
765 | void (*resume)(struct pci_dev *dev); |
766 | }; |
767 | |
768 | |
769 | struct module; |
770 | struct pci_driver { |
771 | struct list_head node; |
772 | const char *name; |
773 | const struct pci_device_id *id_table; /* Must be non-NULL for probe to be called */ |
774 | int (*probe)(struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ |
775 | void (*remove)(struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ |
776 | int (*suspend)(struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
777 | int (*suspend_late)(struct pci_dev *dev, pm_message_t state); |
778 | int (*resume_early)(struct pci_dev *dev); |
779 | int (*resume)(struct pci_dev *dev); /* Device woken up */ |
780 | void (*shutdown)(struct pci_dev *dev); |
781 | int (*sriov_configure)(struct pci_dev *dev, int num_vfs); /* On PF */ |
782 | const struct pci_error_handlers *err_handler; |
783 | const struct attribute_group **groups; |
784 | struct device_driver driver; |
785 | struct pci_dynids dynids; |
786 | }; |
787 | |
788 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
789 | |
790 | /** |
791 | * PCI_DEVICE - macro used to describe a specific PCI device |
792 | * @vend: the 16 bit PCI Vendor ID |
793 | * @dev: the 16 bit PCI Device ID |
794 | * |
795 | * This macro is used to create a struct pci_device_id that matches a |
796 | * specific device. The subvendor and subdevice fields will be set to |
797 | * PCI_ANY_ID. |
798 | */ |
799 | #define PCI_DEVICE(vend,dev) \ |
800 | .vendor = (vend), .device = (dev), \ |
801 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
802 | |
803 | /** |
804 | * PCI_DEVICE_SUB - macro used to describe a specific PCI device with subsystem |
805 | * @vend: the 16 bit PCI Vendor ID |
806 | * @dev: the 16 bit PCI Device ID |
807 | * @subvend: the 16 bit PCI Subvendor ID |
808 | * @subdev: the 16 bit PCI Subdevice ID |
809 | * |
810 | * This macro is used to create a struct pci_device_id that matches a |
811 | * specific device with subsystem information. |
812 | */ |
813 | #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ |
814 | .vendor = (vend), .device = (dev), \ |
815 | .subvendor = (subvend), .subdevice = (subdev) |
816 | |
817 | /** |
818 | * PCI_DEVICE_CLASS - macro used to describe a specific PCI device class |
819 | * @dev_class: the class, subclass, prog-if triple for this device |
820 | * @dev_class_mask: the class mask for this device |
821 | * |
822 | * This macro is used to create a struct pci_device_id that matches a |
823 | * specific PCI class. The vendor, device, subvendor, and subdevice |
824 | * fields will be set to PCI_ANY_ID. |
825 | */ |
826 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
827 | .class = (dev_class), .class_mask = (dev_class_mask), \ |
828 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
829 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
830 | |
831 | /** |
832 | * PCI_VDEVICE - macro used to describe a specific PCI device in short form |
833 | * @vend: the vendor name |
834 | * @dev: the 16 bit PCI Device ID |
835 | * |
836 | * This macro is used to create a struct pci_device_id that matches a |
837 | * specific PCI device. The subvendor, and subdevice fields will be set |
838 | * to PCI_ANY_ID. The macro allows the next field to follow as the device |
839 | * private data. |
840 | */ |
841 | #define PCI_VDEVICE(vend, dev) \ |
842 | .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ |
843 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 |
844 | |
845 | /** |
846 | * PCI_DEVICE_DATA - macro used to describe a specific PCI device in very short form |
847 | * @vend: the vendor name (without PCI_VENDOR_ID_ prefix) |
848 | * @dev: the device name (without PCI_DEVICE_ID_<vend>_ prefix) |
849 | * @data: the driver data to be filled |
850 | * |
851 | * This macro is used to create a struct pci_device_id that matches a |
852 | * specific PCI device. The subvendor, and subdevice fields will be set |
853 | * to PCI_ANY_ID. |
854 | */ |
855 | #define PCI_DEVICE_DATA(vend, dev, data) \ |
856 | .vendor = PCI_VENDOR_ID_##vend, .device = PCI_DEVICE_ID_##vend##_##dev, \ |
857 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0, \ |
858 | .driver_data = (kernel_ulong_t)(data) |
859 | |
860 | enum { |
861 | PCI_REASSIGN_ALL_RSRC = 0x00000001, /* Ignore firmware setup */ |
862 | PCI_REASSIGN_ALL_BUS = 0x00000002, /* Reassign all bus numbers */ |
863 | PCI_PROBE_ONLY = 0x00000004, /* Use existing setup */ |
864 | PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, /* Don't do ISA alignment */ |
865 | PCI_ENABLE_PROC_DOMAINS = 0x00000010, /* Enable domains in /proc */ |
866 | PCI_COMPAT_DOMAIN_0 = 0x00000020, /* ... except domain 0 */ |
867 | PCI_SCAN_ALL_PCIE_DEVS = 0x00000040, /* Scan all, not just dev 0 */ |
868 | }; |
869 | |
870 | /* These external functions are only available when PCI support is enabled */ |
871 | #ifdef CONFIG_PCI |
872 | |
873 | extern unsigned int pci_flags; |
874 | |
875 | static inline void pci_set_flags(int flags) { pci_flags = flags; } |
876 | static inline void pci_add_flags(int flags) { pci_flags |= flags; } |
877 | static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; } |
878 | static inline int pci_has_flag(int flag) { return pci_flags & flag; } |
879 | |
880 | void pcie_bus_configure_settings(struct pci_bus *bus); |
881 | |
882 | enum pcie_bus_config_types { |
883 | PCIE_BUS_TUNE_OFF, /* Don't touch MPS at all */ |
884 | PCIE_BUS_DEFAULT, /* Ensure MPS matches upstream bridge */ |
885 | PCIE_BUS_SAFE, /* Use largest MPS boot-time devices support */ |
886 | PCIE_BUS_PERFORMANCE, /* Use MPS and MRRS for best performance */ |
887 | PCIE_BUS_PEER2PEER, /* Set MPS = 128 for all devices */ |
888 | }; |
889 | |
890 | extern enum pcie_bus_config_types pcie_bus_config; |
891 | |
892 | extern struct bus_type pci_bus_type; |
893 | |
894 | /* Do NOT directly access these two variables, unless you are arch-specific PCI |
895 | * code, or PCI core code. */ |
896 | extern struct list_head pci_root_buses; /* List of all known PCI buses */ |
897 | /* Some device drivers need know if PCI is initiated */ |
898 | int no_pci_devices(void); |
899 | |
900 | void pcibios_resource_survey_bus(struct pci_bus *bus); |
901 | void pcibios_bus_add_device(struct pci_dev *pdev); |
902 | void pcibios_add_bus(struct pci_bus *bus); |
903 | void pcibios_remove_bus(struct pci_bus *bus); |
904 | void pcibios_fixup_bus(struct pci_bus *); |
905 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
906 | /* Architecture-specific versions may override this (weak) */ |
907 | char *pcibios_setup(char *str); |
908 | |
909 | /* Used only when drivers/pci/setup.c is used */ |
910 | resource_size_t pcibios_align_resource(void *, const struct resource *, |
911 | resource_size_t, |
912 | resource_size_t); |
913 | |
914 | /* Weak but can be overriden by arch */ |
915 | void pci_fixup_cardbus(struct pci_bus *); |
916 | |
917 | /* Generic PCI functions used internally */ |
918 | |
919 | void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, |
920 | struct resource *res); |
921 | void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, |
922 | struct pci_bus_region *region); |
923 | void pcibios_scan_specific_bus(int busn); |
924 | struct pci_bus *pci_find_bus(int domain, int busnr); |
925 | void pci_bus_add_devices(const struct pci_bus *bus); |
926 | struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
927 | struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
928 | struct pci_ops *ops, void *sysdata, |
929 | struct list_head *resources); |
930 | int pci_host_probe(struct pci_host_bridge *bridge); |
931 | int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
932 | int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); |
933 | void pci_bus_release_busn_res(struct pci_bus *b); |
934 | struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
935 | struct pci_ops *ops, void *sysdata, |
936 | struct list_head *resources); |
937 | int pci_scan_root_bus_bridge(struct pci_host_bridge *bridge); |
938 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
939 | int busnr); |
940 | void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
941 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
942 | const char *name, |
943 | struct hotplug_slot *hotplug); |
944 | void pci_destroy_slot(struct pci_slot *slot); |
945 | #ifdef CONFIG_SYSFS |
946 | void pci_dev_assign_slot(struct pci_dev *dev); |
947 | #else |
948 | static inline void pci_dev_assign_slot(struct pci_dev *dev) { } |
949 | #endif |
950 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
951 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
952 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
953 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
954 | void pci_bus_add_device(struct pci_dev *dev); |
955 | void pci_read_bridge_bases(struct pci_bus *child); |
956 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
957 | struct resource *res); |
958 | struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev); |
959 | u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
960 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
961 | u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
962 | struct pci_dev *pci_dev_get(struct pci_dev *dev); |
963 | void pci_dev_put(struct pci_dev *dev); |
964 | void pci_remove_bus(struct pci_bus *b); |
965 | void pci_stop_and_remove_bus_device(struct pci_dev *dev); |
966 | void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); |
967 | void pci_stop_root_bus(struct pci_bus *bus); |
968 | void pci_remove_root_bus(struct pci_bus *bus); |
969 | void pci_setup_cardbus(struct pci_bus *bus); |
970 | void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type); |
971 | void pci_sort_breadthfirst(void); |
972 | #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
973 | #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) |
974 | |
975 | /* Generic PCI functions exported to card drivers */ |
976 | |
977 | enum pci_lost_interrupt_reason { |
978 | PCI_LOST_IRQ_NO_INFORMATION = 0, |
979 | PCI_LOST_IRQ_DISABLE_MSI, |
980 | PCI_LOST_IRQ_DISABLE_MSIX, |
981 | PCI_LOST_IRQ_DISABLE_ACPI, |
982 | }; |
983 | enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); |
984 | int pci_find_capability(struct pci_dev *dev, int cap); |
985 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); |
986 | int pci_find_ext_capability(struct pci_dev *dev, int cap); |
987 | int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
988 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
989 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); |
990 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
991 | |
992 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
993 | struct pci_dev *from); |
994 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
995 | unsigned int ss_vendor, unsigned int ss_device, |
996 | struct pci_dev *from); |
997 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
998 | struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
999 | unsigned int devfn); |
1000 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
1001 | int pci_dev_present(const struct pci_device_id *ids); |
1002 | |
1003 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
1004 | int where, u8 *val); |
1005 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, |
1006 | int where, u16 *val); |
1007 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, |
1008 | int where, u32 *val); |
1009 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, |
1010 | int where, u8 val); |
1011 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, |
1012 | int where, u16 val); |
1013 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, |
1014 | int where, u32 val); |
1015 | |
1016 | int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn, |
1017 | int where, int size, u32 *val); |
1018 | int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn, |
1019 | int where, int size, u32 val); |
1020 | int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn, |
1021 | int where, int size, u32 *val); |
1022 | int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn, |
1023 | int where, int size, u32 val); |
1024 | |
1025 | struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
1026 | |
1027 | int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val); |
1028 | int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val); |
1029 | int pci_read_config_dword(const struct pci_dev *dev, int where, u32 *val); |
1030 | int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val); |
1031 | int pci_write_config_word(const struct pci_dev *dev, int where, u16 val); |
1032 | int pci_write_config_dword(const struct pci_dev *dev, int where, u32 val); |
1033 | |
1034 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
1035 | int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); |
1036 | int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); |
1037 | int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); |
1038 | int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, |
1039 | u16 clear, u16 set); |
1040 | int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, |
1041 | u32 clear, u32 set); |
1042 | |
1043 | static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, |
1044 | u16 set) |
1045 | { |
1046 | return pcie_capability_clear_and_set_word(dev, pos, 0, set); |
1047 | } |
1048 | |
1049 | static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, |
1050 | u32 set) |
1051 | { |
1052 | return pcie_capability_clear_and_set_dword(dev, pos, 0, set); |
1053 | } |
1054 | |
1055 | static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, |
1056 | u16 clear) |
1057 | { |
1058 | return pcie_capability_clear_and_set_word(dev, pos, clear, 0); |
1059 | } |
1060 | |
1061 | static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, |
1062 | u32 clear) |
1063 | { |
1064 | return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); |
1065 | } |
1066 | |
1067 | /* User-space driven config access */ |
1068 | int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); |
1069 | int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); |
1070 | int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); |
1071 | int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); |
1072 | int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); |
1073 | int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); |
1074 | |
1075 | int __must_check pci_enable_device(struct pci_dev *dev); |
1076 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
1077 | int __must_check pci_enable_device_mem(struct pci_dev *dev); |
1078 | int __must_check pci_reenable_device(struct pci_dev *); |
1079 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
1080 | void pcim_pin_device(struct pci_dev *pdev); |
1081 | |
1082 | static inline bool pci_intx_mask_supported(struct pci_dev *pdev) |
1083 | { |
1084 | /* |
1085 | * INTx masking is supported if PCI_COMMAND_INTX_DISABLE is |
1086 | * writable and no quirk has marked the feature broken. |
1087 | */ |
1088 | return !pdev->broken_intx_masking; |
1089 | } |
1090 | |
1091 | static inline int pci_is_enabled(struct pci_dev *pdev) |
1092 | { |
1093 | return (atomic_read(&pdev->enable_cnt) > 0); |
1094 | } |
1095 | |
1096 | static inline int pci_is_managed(struct pci_dev *pdev) |
1097 | { |
1098 | return pdev->is_managed; |
1099 | } |
1100 | |
1101 | void pci_disable_device(struct pci_dev *dev); |
1102 | |
1103 | extern unsigned int pcibios_max_latency; |
1104 | void pci_set_master(struct pci_dev *dev); |
1105 | void pci_clear_master(struct pci_dev *dev); |
1106 | |
1107 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
1108 | int pci_set_cacheline_size(struct pci_dev *dev); |
1109 | #define HAVE_PCI_SET_MWI |
1110 | int __must_check pci_set_mwi(struct pci_dev *dev); |
1111 | int __must_check pcim_set_mwi(struct pci_dev *dev); |
1112 | int pci_try_set_mwi(struct pci_dev *dev); |
1113 | void pci_clear_mwi(struct pci_dev *dev); |
1114 | void pci_intx(struct pci_dev *dev, int enable); |
1115 | bool pci_check_and_mask_intx(struct pci_dev *dev); |
1116 | bool pci_check_and_unmask_intx(struct pci_dev *dev); |
1117 | int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask); |
1118 | int pci_wait_for_pending_transaction(struct pci_dev *dev); |
1119 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
1120 | int pcix_get_mmrbc(struct pci_dev *dev); |
1121 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); |
1122 | int pcie_get_readrq(struct pci_dev *dev); |
1123 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
1124 | int pcie_get_mps(struct pci_dev *dev); |
1125 | int pcie_set_mps(struct pci_dev *dev, int mps); |
1126 | u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev, |
1127 | enum pci_bus_speed *speed, |
1128 | enum pcie_link_width *width); |
1129 | void pcie_print_link_status(struct pci_dev *dev); |
1130 | bool pcie_has_flr(struct pci_dev *dev); |
1131 | int pcie_flr(struct pci_dev *dev); |
1132 | int __pci_reset_function_locked(struct pci_dev *dev); |
1133 | int pci_reset_function(struct pci_dev *dev); |
1134 | int pci_reset_function_locked(struct pci_dev *dev); |
1135 | int pci_try_reset_function(struct pci_dev *dev); |
1136 | int pci_probe_reset_slot(struct pci_slot *slot); |
1137 | int pci_probe_reset_bus(struct pci_bus *bus); |
1138 | int pci_reset_bus(struct pci_dev *dev); |
1139 | void pci_reset_secondary_bus(struct pci_dev *dev); |
1140 | void pcibios_reset_secondary_bus(struct pci_dev *dev); |
1141 | void pci_update_resource(struct pci_dev *dev, int resno); |
1142 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
1143 | int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
1144 | void pci_release_resource(struct pci_dev *dev, int resno); |
1145 | int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size); |
1146 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
1147 | bool pci_device_is_present(struct pci_dev *pdev); |
1148 | void pci_ignore_hotplug(struct pci_dev *dev); |
1149 | |
1150 | int __printf(6, 7) pci_request_irq(struct pci_dev *dev, unsigned int nr, |
1151 | irq_handler_t handler, irq_handler_t thread_fn, void *dev_id, |
1152 | const char *fmt, ...); |
1153 | void pci_free_irq(struct pci_dev *dev, unsigned int nr, void *dev_id); |
1154 | |
1155 | /* ROM control related routines */ |
1156 | int pci_enable_rom(struct pci_dev *pdev); |
1157 | void pci_disable_rom(struct pci_dev *pdev); |
1158 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
1159 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
1160 | void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); |
1161 | |
1162 | /* Power management related routines */ |
1163 | int pci_save_state(struct pci_dev *dev); |
1164 | void pci_restore_state(struct pci_dev *dev); |
1165 | struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
1166 | int pci_load_saved_state(struct pci_dev *dev, |
1167 | struct pci_saved_state *state); |
1168 | int pci_load_and_free_saved_state(struct pci_dev *dev, |
1169 | struct pci_saved_state **state); |
1170 | struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap); |
1171 | struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev, |
1172 | u16 cap); |
1173 | int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size); |
1174 | int pci_add_ext_cap_save_buffer(struct pci_dev *dev, |
1175 | u16 cap, unsigned int size); |
1176 | int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
1177 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
1178 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
1179 | bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
1180 | void pci_pme_active(struct pci_dev *dev, bool enable); |
1181 | int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable); |
1182 | int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
1183 | int pci_prepare_to_sleep(struct pci_dev *dev); |
1184 | int pci_back_from_sleep(struct pci_dev *dev); |
1185 | bool pci_dev_run_wake(struct pci_dev *dev); |
1186 | bool pci_check_pme_status(struct pci_dev *dev); |
1187 | void pci_pme_wakeup_bus(struct pci_bus *bus); |
1188 | void pci_d3cold_enable(struct pci_dev *dev); |
1189 | void pci_d3cold_disable(struct pci_dev *dev); |
1190 | bool pcie_relaxed_ordering_enabled(struct pci_dev *dev); |
1191 | void pci_wakeup_bus(struct pci_bus *bus); |
1192 | void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state); |
1193 | |
1194 | /* PCI Virtual Channel */ |
1195 | int pci_save_vc_state(struct pci_dev *dev); |
1196 | void pci_restore_vc_state(struct pci_dev *dev); |
1197 | void pci_allocate_vc_save_buffers(struct pci_dev *dev); |
1198 | |
1199 | /* For use by arch with custom probe code */ |
1200 | void set_pcie_port_type(struct pci_dev *pdev); |
1201 | void set_pcie_hotplug_bridge(struct pci_dev *pdev); |
1202 | |
1203 | /* Functions for PCI Hotplug drivers to use */ |
1204 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
1205 | unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
1206 | unsigned int pci_rescan_bus(struct pci_bus *bus); |
1207 | void pci_lock_rescan_remove(void); |
1208 | void pci_unlock_rescan_remove(void); |
1209 | |
1210 | /* Vital Product Data routines */ |
1211 | ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); |
1212 | ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); |
1213 | int pci_set_vpd_size(struct pci_dev *dev, size_t len); |
1214 | |
1215 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
1216 | resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
1217 | void pci_bus_assign_resources(const struct pci_bus *bus); |
1218 | void pci_bus_claim_resources(struct pci_bus *bus); |
1219 | void pci_bus_size_bridges(struct pci_bus *bus); |
1220 | int pci_claim_resource(struct pci_dev *, int); |
1221 | int pci_claim_bridge_resource(struct pci_dev *bridge, int i); |
1222 | void pci_assign_unassigned_resources(void); |
1223 | void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
1224 | void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
1225 | void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); |
1226 | int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type); |
1227 | void pdev_enable_device(struct pci_dev *); |
1228 | int pci_enable_resources(struct pci_dev *, int mask); |
1229 | void pci_assign_irq(struct pci_dev *dev); |
1230 | struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res); |
1231 | #define HAVE_PCI_REQ_REGIONS 2 |
1232 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
1233 | int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
1234 | void pci_release_regions(struct pci_dev *); |
1235 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
1236 | int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
1237 | void pci_release_region(struct pci_dev *, int); |
1238 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
1239 | int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
1240 | void pci_release_selected_regions(struct pci_dev *, int); |
1241 | |
1242 | /* drivers/pci/bus.c */ |
1243 | struct pci_bus *pci_bus_get(struct pci_bus *bus); |
1244 | void pci_bus_put(struct pci_bus *bus); |
1245 | void pci_add_resource(struct list_head *resources, struct resource *res); |
1246 | void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
1247 | resource_size_t offset); |
1248 | void pci_free_resource_list(struct list_head *resources); |
1249 | void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, |
1250 | unsigned int flags); |
1251 | struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); |
1252 | void pci_bus_remove_resources(struct pci_bus *bus); |
1253 | int devm_request_pci_bus_resources(struct device *dev, |
1254 | struct list_head *resources); |
1255 | |
1256 | /* Temporary until new and working PCI SBR API in place */ |
1257 | int pci_bridge_secondary_bus_reset(struct pci_dev *dev); |
1258 | |
1259 | #define pci_bus_for_each_resource(bus, res, i) \ |
1260 | for (i = 0; \ |
1261 | (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ |
1262 | i++) |
1263 | |
1264 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
1265 | struct resource *res, resource_size_t size, |
1266 | resource_size_t align, resource_size_t min, |
1267 | unsigned long type_mask, |
1268 | resource_size_t (*alignf)(void *, |
1269 | const struct resource *, |
1270 | resource_size_t, |
1271 | resource_size_t), |
1272 | void *alignf_data); |
1273 | |
1274 | |
1275 | int pci_register_io_range(struct fwnode_handle *fwnode, phys_addr_t addr, |
1276 | resource_size_t size); |
1277 | unsigned long pci_address_to_pio(phys_addr_t addr); |
1278 | phys_addr_t pci_pio_to_address(unsigned long pio); |
1279 | int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr); |
1280 | int devm_pci_remap_iospace(struct device *dev, const struct resource *res, |
1281 | phys_addr_t phys_addr); |
1282 | void pci_unmap_iospace(struct resource *res); |
1283 | void __iomem *devm_pci_remap_cfgspace(struct device *dev, |
1284 | resource_size_t offset, |
1285 | resource_size_t size); |
1286 | void __iomem *devm_pci_remap_cfg_resource(struct device *dev, |
1287 | struct resource *res); |
1288 | |
1289 | static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar) |
1290 | { |
1291 | struct pci_bus_region region; |
1292 | |
1293 | pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]); |
1294 | return region.start; |
1295 | } |
1296 | |
1297 | /* Proper probing supporting hot-pluggable devices */ |
1298 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
1299 | const char *mod_name); |
1300 | |
1301 | /* pci_register_driver() must be a macro so KBUILD_MODNAME can be expanded */ |
1302 | #define pci_register_driver(driver) \ |
1303 | __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
1304 | |
1305 | void pci_unregister_driver(struct pci_driver *dev); |
1306 | |
1307 | /** |
1308 | * module_pci_driver() - Helper macro for registering a PCI driver |
1309 | * @__pci_driver: pci_driver struct |
1310 | * |
1311 | * Helper macro for PCI drivers which do not do anything special in module |
1312 | * init/exit. This eliminates a lot of boilerplate. Each module may only |
1313 | * use this macro once, and calling it replaces module_init() and module_exit() |
1314 | */ |
1315 | #define module_pci_driver(__pci_driver) \ |
1316 | module_driver(__pci_driver, pci_register_driver, pci_unregister_driver) |
1317 | |
1318 | /** |
1319 | * builtin_pci_driver() - Helper macro for registering a PCI driver |
1320 | * @__pci_driver: pci_driver struct |
1321 | * |
1322 | * Helper macro for PCI drivers which do not do anything special in their |
1323 | * init code. This eliminates a lot of boilerplate. Each driver may only |
1324 | * use this macro once, and calling it replaces device_initcall(...) |
1325 | */ |
1326 | #define builtin_pci_driver(__pci_driver) \ |
1327 | builtin_driver(__pci_driver, pci_register_driver) |
1328 | |
1329 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
1330 | int pci_add_dynid(struct pci_driver *drv, |
1331 | unsigned int vendor, unsigned int device, |
1332 | unsigned int subvendor, unsigned int subdevice, |
1333 | unsigned int class, unsigned int class_mask, |
1334 | unsigned long driver_data); |
1335 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
1336 | struct pci_dev *dev); |
1337 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, |
1338 | int pass); |
1339 | |
1340 | void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
1341 | void *userdata); |
1342 | int pci_cfg_space_size(struct pci_dev *dev); |
1343 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
1344 | void pci_setup_bridge(struct pci_bus *bus); |
1345 | resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
1346 | unsigned long type); |
1347 | |
1348 | #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
1349 | #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) |
1350 | |
1351 | int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
1352 | unsigned int command_bits, u32 flags); |
1353 | |
1354 | #define PCI_IRQ_LEGACY (1 << 0) /* Allow legacy interrupts */ |
1355 | #define PCI_IRQ_MSI (1 << 1) /* Allow MSI interrupts */ |
1356 | #define PCI_IRQ_MSIX (1 << 2) /* Allow MSI-X interrupts */ |
1357 | #define PCI_IRQ_AFFINITY (1 << 3) /* Auto-assign affinity */ |
1358 | #define PCI_IRQ_ALL_TYPES \ |
1359 | (PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX) |
1360 | |
1361 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
1362 | |
1363 | #include <linux/dmapool.h> |
1364 | |
1365 | #define pci_pool dma_pool |
1366 | #define pci_pool_create(name, pdev, size, align, allocation) \ |
1367 | dma_pool_create(name, &pdev->dev, size, align, allocation) |
1368 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
1369 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
1370 | #define pci_pool_zalloc(pool, flags, handle) \ |
1371 | dma_pool_zalloc(pool, flags, handle) |
1372 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
1373 | |
1374 | struct msix_entry { |
1375 | u32 vector; /* Kernel uses to write allocated vector */ |
1376 | u16 entry; /* Driver uses to specify entry, OS writes */ |
1377 | }; |
1378 | |
1379 | #ifdef CONFIG_PCI_MSI |
1380 | int pci_msi_vec_count(struct pci_dev *dev); |
1381 | void pci_disable_msi(struct pci_dev *dev); |
1382 | int pci_msix_vec_count(struct pci_dev *dev); |
1383 | void pci_disable_msix(struct pci_dev *dev); |
1384 | void pci_restore_msi_state(struct pci_dev *dev); |
1385 | int pci_msi_enabled(void); |
1386 | int pci_enable_msi(struct pci_dev *dev); |
1387 | int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, |
1388 | int minvec, int maxvec); |
1389 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
1390 | struct msix_entry *entries, int nvec) |
1391 | { |
1392 | int rc = pci_enable_msix_range(dev, entries, nvec, nvec); |
1393 | if (rc < 0) |
1394 | return rc; |
1395 | return 0; |
1396 | } |
1397 | int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs, |
1398 | unsigned int max_vecs, unsigned int flags, |
1399 | struct irq_affinity *affd); |
1400 | |
1401 | void pci_free_irq_vectors(struct pci_dev *dev); |
1402 | int pci_irq_vector(struct pci_dev *dev, unsigned int nr); |
1403 | const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec); |
1404 | int pci_irq_get_node(struct pci_dev *pdev, int vec); |
1405 | |
1406 | #else |
1407 | static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
1408 | static inline void pci_disable_msi(struct pci_dev *dev) { } |
1409 | static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
1410 | static inline void pci_disable_msix(struct pci_dev *dev) { } |
1411 | static inline void pci_restore_msi_state(struct pci_dev *dev) { } |
1412 | static inline int pci_msi_enabled(void) { return 0; } |
1413 | static inline int pci_enable_msi(struct pci_dev *dev) |
1414 | { return -ENOSYS; } |
1415 | static inline int pci_enable_msix_range(struct pci_dev *dev, |
1416 | struct msix_entry *entries, int minvec, int maxvec) |
1417 | { return -ENOSYS; } |
1418 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
1419 | struct msix_entry *entries, int nvec) |
1420 | { return -ENOSYS; } |
1421 | |
1422 | static inline int |
1423 | pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs, |
1424 | unsigned int max_vecs, unsigned int flags, |
1425 | struct irq_affinity *aff_desc) |
1426 | { |
1427 | if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1 && dev->irq) |
1428 | return 1; |
1429 | return -ENOSPC; |
1430 | } |
1431 | |
1432 | static inline void pci_free_irq_vectors(struct pci_dev *dev) |
1433 | { |
1434 | } |
1435 | |
1436 | static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr) |
1437 | { |
1438 | if (WARN_ON_ONCE(nr > 0)) |
1439 | return -EINVAL; |
1440 | return dev->irq; |
1441 | } |
1442 | static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, |
1443 | int vec) |
1444 | { |
1445 | return cpu_possible_mask; |
1446 | } |
1447 | |
1448 | static inline int pci_irq_get_node(struct pci_dev *pdev, int vec) |
1449 | { |
1450 | return first_online_node; |
1451 | } |
1452 | #endif |
1453 | |
1454 | static inline int |
1455 | pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, |
1456 | unsigned int max_vecs, unsigned int flags) |
1457 | { |
1458 | return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags, |
1459 | NULL); |
1460 | } |
1461 | |
1462 | /** |
1463 | * pci_irqd_intx_xlate() - Translate PCI INTx value to an IRQ domain hwirq |
1464 | * @d: the INTx IRQ domain |
1465 | * @node: the DT node for the device whose interrupt we're translating |
1466 | * @intspec: the interrupt specifier data from the DT |
1467 | * @intsize: the number of entries in @intspec |
1468 | * @out_hwirq: pointer at which to write the hwirq number |
1469 | * @out_type: pointer at which to write the interrupt type |
1470 | * |
1471 | * Translate a PCI INTx interrupt number from device tree in the range 1-4, as |
1472 | * stored in the standard PCI_INTERRUPT_PIN register, to a value in the range |
1473 | * 0-3 suitable for use in a 4 entry IRQ domain. That is, subtract one from the |
1474 | * INTx value to obtain the hwirq number. |
1475 | * |
1476 | * Returns 0 on success, or -EINVAL if the interrupt specifier is out of range. |
1477 | */ |
1478 | static inline int pci_irqd_intx_xlate(struct irq_domain *d, |
1479 | struct device_node *node, |
1480 | const u32 *intspec, |
1481 | unsigned int intsize, |
1482 | unsigned long *out_hwirq, |
1483 | unsigned int *out_type) |
1484 | { |
1485 | const u32 intx = intspec[0]; |
1486 | |
1487 | if (intx < PCI_INTERRUPT_INTA || intx > PCI_INTERRUPT_INTD) |
1488 | return -EINVAL; |
1489 | |
1490 | *out_hwirq = intx - PCI_INTERRUPT_INTA; |
1491 | return 0; |
1492 | } |
1493 | |
1494 | #ifdef CONFIG_PCIEPORTBUS |
1495 | extern bool pcie_ports_disabled; |
1496 | extern bool pcie_ports_native; |
1497 | #else |
1498 | #define pcie_ports_disabled true |
1499 | #define pcie_ports_native false |
1500 | #endif |
1501 | |
1502 | #ifdef CONFIG_PCIEASPM |
1503 | bool pcie_aspm_support_enabled(void); |
1504 | #else |
1505 | static inline bool pcie_aspm_support_enabled(void) { return false; } |
1506 | #endif |
1507 | |
1508 | #ifdef CONFIG_PCIEAER |
1509 | bool pci_aer_available(void); |
1510 | #else |
1511 | static inline bool pci_aer_available(void) { return false; } |
1512 | #endif |
1513 | |
1514 | #ifdef CONFIG_PCIE_ECRC |
1515 | void pcie_set_ecrc_checking(struct pci_dev *dev); |
1516 | void pcie_ecrc_get_policy(char *str); |
1517 | #else |
1518 | static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } |
1519 | static inline void pcie_ecrc_get_policy(char *str) { } |
1520 | #endif |
1521 | |
1522 | bool pci_ats_disabled(void); |
1523 | |
1524 | #ifdef CONFIG_PCI_ATS |
1525 | /* Address Translation Service */ |
1526 | void pci_ats_init(struct pci_dev *dev); |
1527 | int pci_enable_ats(struct pci_dev *dev, int ps); |
1528 | void pci_disable_ats(struct pci_dev *dev); |
1529 | int pci_ats_queue_depth(struct pci_dev *dev); |
1530 | int pci_ats_page_aligned(struct pci_dev *dev); |
1531 | #else |
1532 | static inline void pci_ats_init(struct pci_dev *d) { } |
1533 | static inline int pci_enable_ats(struct pci_dev *d, int ps) { return -ENODEV; } |
1534 | static inline void pci_disable_ats(struct pci_dev *d) { } |
1535 | static inline int pci_ats_queue_depth(struct pci_dev *d) { return -ENODEV; } |
1536 | static inline int pci_ats_page_aligned(struct pci_dev *dev) { return 0; } |
1537 | #endif |
1538 | |
1539 | #ifdef CONFIG_PCIE_PTM |
1540 | int pci_enable_ptm(struct pci_dev *dev, u8 *granularity); |
1541 | #else |
1542 | static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity) |
1543 | { return -EINVAL; } |
1544 | #endif |
1545 | |
1546 | void pci_cfg_access_lock(struct pci_dev *dev); |
1547 | bool pci_cfg_access_trylock(struct pci_dev *dev); |
1548 | void pci_cfg_access_unlock(struct pci_dev *dev); |
1549 | |
1550 | /* |
1551 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
1552 | * a PCI domain is defined to be a set of PCI buses which share |
1553 | * configuration space. |
1554 | */ |
1555 | #ifdef CONFIG_PCI_DOMAINS |
1556 | extern int pci_domains_supported; |
1557 | #else |
1558 | enum { pci_domains_supported = 0 }; |
1559 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1560 | static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } |
1561 | #endif /* CONFIG_PCI_DOMAINS */ |
1562 | |
1563 | /* |
1564 | * Generic implementation for PCI domain support. If your |
1565 | * architecture does not need custom management of PCI |
1566 | * domains then this implementation will be used |
1567 | */ |
1568 | #ifdef CONFIG_PCI_DOMAINS_GENERIC |
1569 | static inline int pci_domain_nr(struct pci_bus *bus) |
1570 | { |
1571 | return bus->domain_nr; |
1572 | } |
1573 | #ifdef CONFIG_ACPI |
1574 | int acpi_pci_bus_find_domain_nr(struct pci_bus *bus); |
1575 | #else |
1576 | static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus) |
1577 | { return 0; } |
1578 | #endif |
1579 | int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent); |
1580 | #endif |
1581 | |
1582 | /* Some architectures require additional setup to direct VGA traffic */ |
1583 | typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, |
1584 | unsigned int command_bits, u32 flags); |
1585 | void pci_register_set_vga_state(arch_set_vga_state_t func); |
1586 | |
1587 | static inline int |
1588 | pci_request_io_regions(struct pci_dev *pdev, const char *name) |
1589 | { |
1590 | return pci_request_selected_regions(pdev, |
1591 | pci_select_bars(pdev, IORESOURCE_IO), name); |
1592 | } |
1593 | |
1594 | static inline void |
1595 | pci_release_io_regions(struct pci_dev *pdev) |
1596 | { |
1597 | return pci_release_selected_regions(pdev, |
1598 | pci_select_bars(pdev, IORESOURCE_IO)); |
1599 | } |
1600 | |
1601 | static inline int |
1602 | pci_request_mem_regions(struct pci_dev *pdev, const char *name) |
1603 | { |
1604 | return pci_request_selected_regions(pdev, |
1605 | pci_select_bars(pdev, IORESOURCE_MEM), name); |
1606 | } |
1607 | |
1608 | static inline void |
1609 | pci_release_mem_regions(struct pci_dev *pdev) |
1610 | { |
1611 | return pci_release_selected_regions(pdev, |
1612 | pci_select_bars(pdev, IORESOURCE_MEM)); |
1613 | } |
1614 | |
1615 | #else /* CONFIG_PCI is not enabled */ |
1616 | |
1617 | static inline void pci_set_flags(int flags) { } |
1618 | static inline void pci_add_flags(int flags) { } |
1619 | static inline void pci_clear_flags(int flags) { } |
1620 | static inline int pci_has_flag(int flag) { return 0; } |
1621 | |
1622 | /* |
1623 | * If the system does not have PCI, clearly these return errors. Define |
1624 | * these as simple inline functions to avoid hair in drivers. |
1625 | */ |
1626 | #define _PCI_NOP(o, s, t) \ |
1627 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ |
1628 | int where, t val) \ |
1629 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
1630 | |
1631 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ |
1632 | _PCI_NOP(o, word, u16 x) \ |
1633 | _PCI_NOP(o, dword, u32 x) |
1634 | _PCI_NOP_ALL(read, *) |
1635 | _PCI_NOP_ALL(write,) |
1636 | |
1637 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
1638 | unsigned int device, |
1639 | struct pci_dev *from) |
1640 | { return NULL; } |
1641 | |
1642 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
1643 | unsigned int device, |
1644 | unsigned int ss_vendor, |
1645 | unsigned int ss_device, |
1646 | struct pci_dev *from) |
1647 | { return NULL; } |
1648 | |
1649 | static inline struct pci_dev *pci_get_class(unsigned int class, |
1650 | struct pci_dev *from) |
1651 | { return NULL; } |
1652 | |
1653 | #define pci_dev_present(ids) (0) |
1654 | #define no_pci_devices() (1) |
1655 | #define pci_dev_put(dev) do { } while (0) |
1656 | |
1657 | static inline void pci_set_master(struct pci_dev *dev) { } |
1658 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } |
1659 | static inline void pci_disable_device(struct pci_dev *dev) { } |
1660 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
1661 | { return -EBUSY; } |
1662 | static inline int __pci_register_driver(struct pci_driver *drv, |
1663 | struct module *owner) |
1664 | { return 0; } |
1665 | static inline int pci_register_driver(struct pci_driver *drv) |
1666 | { return 0; } |
1667 | static inline void pci_unregister_driver(struct pci_driver *drv) { } |
1668 | static inline int pci_find_capability(struct pci_dev *dev, int cap) |
1669 | { return 0; } |
1670 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
1671 | int cap) |
1672 | { return 0; } |
1673 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
1674 | { return 0; } |
1675 | |
1676 | /* Power management related routines */ |
1677 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
1678 | static inline void pci_restore_state(struct pci_dev *dev) { } |
1679 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
1680 | { return 0; } |
1681 | static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
1682 | { return 0; } |
1683 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
1684 | pm_message_t state) |
1685 | { return PCI_D0; } |
1686 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1687 | int enable) |
1688 | { return 0; } |
1689 | |
1690 | static inline struct resource *pci_find_resource(struct pci_dev *dev, |
1691 | struct resource *res) |
1692 | { return NULL; } |
1693 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
1694 | { return -EIO; } |
1695 | static inline void pci_release_regions(struct pci_dev *dev) { } |
1696 | |
1697 | static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; } |
1698 | |
1699 | static inline void pci_block_cfg_access(struct pci_dev *dev) { } |
1700 | static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
1701 | { return 0; } |
1702 | static inline void pci_unblock_cfg_access(struct pci_dev *dev) { } |
1703 | |
1704 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
1705 | { return NULL; } |
1706 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
1707 | unsigned int devfn) |
1708 | { return NULL; } |
1709 | static inline struct pci_dev *pci_get_domain_bus_and_slot(int domain, |
1710 | unsigned int bus, unsigned int devfn) |
1711 | { return NULL; } |
1712 | |
1713 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1714 | static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } |
1715 | |
1716 | #define dev_is_pci(d) (false) |
1717 | #define dev_is_pf(d) (false) |
1718 | static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags) |
1719 | { return false; } |
1720 | static inline int pci_irqd_intx_xlate(struct irq_domain *d, |
1721 | struct device_node *node, |
1722 | const u32 *intspec, |
1723 | unsigned int intsize, |
1724 | unsigned long *out_hwirq, |
1725 | unsigned int *out_type) |
1726 | { return -EINVAL; } |
1727 | |
1728 | static inline const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
1729 | struct pci_dev *dev) |
1730 | { return NULL; } |
1731 | #endif /* CONFIG_PCI */ |
1732 | |
1733 | /* Include architecture-dependent settings and functions */ |
1734 | |
1735 | #include <asm/pci.h> |
1736 | |
1737 | /* These two functions provide almost identical functionality. Depennding |
1738 | * on the architecture, one will be implemented as a wrapper around the |
1739 | * other (in drivers/pci/mmap.c). |
1740 | * |
1741 | * pci_mmap_resource_range() maps a specific BAR, and vm->vm_pgoff |
1742 | * is expected to be an offset within that region. |
1743 | * |
1744 | * pci_mmap_page_range() is the legacy architecture-specific interface, |
1745 | * which accepts a "user visible" resource address converted by |
1746 | * pci_resource_to_user(), as used in the legacy mmap() interface in |
1747 | * /proc/bus/pci/. |
1748 | */ |
1749 | int pci_mmap_resource_range(struct pci_dev *dev, int bar, |
1750 | struct vm_area_struct *vma, |
1751 | enum pci_mmap_state mmap_state, int write_combine); |
1752 | int pci_mmap_page_range(struct pci_dev *pdev, int bar, |
1753 | struct vm_area_struct *vma, |
1754 | enum pci_mmap_state mmap_state, int write_combine); |
1755 | |
1756 | #ifndef arch_can_pci_mmap_wc |
1757 | #define arch_can_pci_mmap_wc() 0 |
1758 | #endif |
1759 | |
1760 | #ifndef arch_can_pci_mmap_io |
1761 | #define arch_can_pci_mmap_io() 0 |
1762 | #define pci_iobar_pfn(pdev, bar, vma) (-EINVAL) |
1763 | #else |
1764 | int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma); |
1765 | #endif |
1766 | |
1767 | #ifndef pci_root_bus_fwnode |
1768 | #define pci_root_bus_fwnode(bus) NULL |
1769 | #endif |
1770 | |
1771 | /* |
1772 | * These helpers provide future and backwards compatibility |
1773 | * for accessing popular PCI BAR info |
1774 | */ |
1775 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
1776 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) |
1777 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) |
1778 | #define pci_resource_len(dev,bar) \ |
1779 | ((pci_resource_start((dev), (bar)) == 0 && \ |
1780 | pci_resource_end((dev), (bar)) == \ |
1781 | pci_resource_start((dev), (bar))) ? 0 : \ |
1782 | \ |
1783 | (pci_resource_end((dev), (bar)) - \ |
1784 | pci_resource_start((dev), (bar)) + 1)) |
1785 | |
1786 | /* |
1787 | * Similar to the helpers above, these manipulate per-pci_dev |
1788 | * driver-specific data. They are really just a wrapper around |
1789 | * the generic device structure functions of these calls. |
1790 | */ |
1791 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
1792 | { |
1793 | return dev_get_drvdata(&pdev->dev); |
1794 | } |
1795 | |
1796 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
1797 | { |
1798 | dev_set_drvdata(&pdev->dev, data); |
1799 | } |
1800 | |
1801 | static inline const char *pci_name(const struct pci_dev *pdev) |
1802 | { |
1803 | return dev_name(&pdev->dev); |
1804 | } |
1805 | |
1806 | |
1807 | /* |
1808 | * Some archs don't want to expose struct resource to userland as-is |
1809 | * in sysfs and /proc |
1810 | */ |
1811 | #ifdef HAVE_ARCH_PCI_RESOURCE_TO_USER |
1812 | void pci_resource_to_user(const struct pci_dev *dev, int bar, |
1813 | const struct resource *rsrc, |
1814 | resource_size_t *start, resource_size_t *end); |
1815 | #else |
1816 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, |
1817 | const struct resource *rsrc, resource_size_t *start, |
1818 | resource_size_t *end) |
1819 | { |
1820 | *start = rsrc->start; |
1821 | *end = rsrc->end; |
1822 | } |
1823 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
1824 | |
1825 | |
1826 | /* |
1827 | * The world is not perfect and supplies us with broken PCI devices. |
1828 | * For at least a part of these bugs we need a work-around, so both |
1829 | * generic (drivers/pci/quirks.c) and per-architecture code can define |
1830 | * fixup hooks to be called for particular buggy devices. |
1831 | */ |
1832 | |
1833 | struct pci_fixup { |
1834 | u16 vendor; /* Or PCI_ANY_ID */ |
1835 | u16 device; /* Or PCI_ANY_ID */ |
1836 | u32 class; /* Or PCI_ANY_ID */ |
1837 | unsigned int class_shift; /* should be 0, 8, 16 */ |
1838 | #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS |
1839 | int hook_offset; |
1840 | #else |
1841 | void (*hook)(struct pci_dev *dev); |
1842 | #endif |
1843 | }; |
1844 | |
1845 | enum pci_fixup_pass { |
1846 | pci_fixup_early, /* Before probing BARs */ |
1847 | , /* After reading configuration header */ |
1848 | pci_fixup_final, /* Final phase of device fixups */ |
1849 | pci_fixup_enable, /* pci_enable_device() time */ |
1850 | pci_fixup_resume, /* pci_device_resume() */ |
1851 | pci_fixup_suspend, /* pci_device_suspend() */ |
1852 | pci_fixup_resume_early, /* pci_device_resume_early() */ |
1853 | pci_fixup_suspend_late, /* pci_device_suspend_late() */ |
1854 | }; |
1855 | |
1856 | #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS |
1857 | #define __DECLARE_PCI_FIXUP_SECTION(sec, name, vendor, device, class, \ |
1858 | class_shift, hook) \ |
1859 | __ADDRESSABLE(hook) \ |
1860 | asm(".section " #sec ", \"a\" \n" \ |
1861 | ".balign 16 \n" \ |
1862 | ".short " #vendor ", " #device " \n" \ |
1863 | ".long " #class ", " #class_shift " \n" \ |
1864 | ".long " #hook " - . \n" \ |
1865 | ".previous \n"); |
1866 | #define DECLARE_PCI_FIXUP_SECTION(sec, name, vendor, device, class, \ |
1867 | class_shift, hook) \ |
1868 | __DECLARE_PCI_FIXUP_SECTION(sec, name, vendor, device, class, \ |
1869 | class_shift, hook) |
1870 | #else |
1871 | /* Anonymous variables would be nice... */ |
1872 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
1873 | class_shift, hook) \ |
1874 | static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \ |
1875 | __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
1876 | = { vendor, device, class, class_shift, hook }; |
1877 | #endif |
1878 | |
1879 | #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ |
1880 | class_shift, hook) \ |
1881 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
1882 | hook, vendor, device, class, class_shift, hook) |
1883 | #define (vendor, device, class, \ |
1884 | class_shift, hook) \ |
1885 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
1886 | hook, vendor, device, class, class_shift, hook) |
1887 | #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ |
1888 | class_shift, hook) \ |
1889 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
1890 | hook, vendor, device, class, class_shift, hook) |
1891 | #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ |
1892 | class_shift, hook) \ |
1893 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
1894 | hook, vendor, device, class, class_shift, hook) |
1895 | #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ |
1896 | class_shift, hook) \ |
1897 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
1898 | resume##hook, vendor, device, class, class_shift, hook) |
1899 | #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ |
1900 | class_shift, hook) \ |
1901 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
1902 | resume_early##hook, vendor, device, class, class_shift, hook) |
1903 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ |
1904 | class_shift, hook) \ |
1905 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
1906 | suspend##hook, vendor, device, class, class_shift, hook) |
1907 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND_LATE(vendor, device, class, \ |
1908 | class_shift, hook) \ |
1909 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
1910 | suspend_late##hook, vendor, device, class, class_shift, hook) |
1911 | |
1912 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
1913 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
1914 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1915 | #define (vendor, device, hook) \ |
1916 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
1917 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1918 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
1919 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
1920 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1921 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
1922 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
1923 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1924 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
1925 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
1926 | resume##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1927 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
1928 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
1929 | resume_early##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1930 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
1931 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
1932 | suspend##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1933 | #define DECLARE_PCI_FIXUP_SUSPEND_LATE(vendor, device, hook) \ |
1934 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
1935 | suspend_late##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1936 | |
1937 | #ifdef CONFIG_PCI_QUIRKS |
1938 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
1939 | #else |
1940 | static inline void pci_fixup_device(enum pci_fixup_pass pass, |
1941 | struct pci_dev *dev) { } |
1942 | #endif |
1943 | |
1944 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
1945 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
1946 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
1947 | int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
1948 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, |
1949 | const char *name); |
1950 | void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
1951 | |
1952 | extern int pci_pci_problems; |
1953 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
1954 | #define PCIPCI_TRITON 2 |
1955 | #define PCIPCI_NATOMA 4 |
1956 | #define PCIPCI_VIAETBF 8 |
1957 | #define PCIPCI_VSFX 16 |
1958 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
1959 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ |
1960 | |
1961 | extern unsigned long pci_cardbus_io_size; |
1962 | extern unsigned long pci_cardbus_mem_size; |
1963 | extern u8 pci_dfl_cache_line_size; |
1964 | extern u8 pci_cache_line_size; |
1965 | |
1966 | extern unsigned long pci_hotplug_io_size; |
1967 | extern unsigned long pci_hotplug_mem_size; |
1968 | extern unsigned long pci_hotplug_bus_size; |
1969 | |
1970 | /* Architecture-specific versions may override these (weak) */ |
1971 | void pcibios_disable_device(struct pci_dev *dev); |
1972 | void pcibios_set_master(struct pci_dev *dev); |
1973 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
1974 | enum pcie_reset_state state); |
1975 | int pcibios_add_device(struct pci_dev *dev); |
1976 | void pcibios_release_device(struct pci_dev *dev); |
1977 | #ifdef CONFIG_PCI |
1978 | void pcibios_penalize_isa_irq(int irq, int active); |
1979 | #else |
1980 | static inline void pcibios_penalize_isa_irq(int irq, int active) {} |
1981 | #endif |
1982 | int pcibios_alloc_irq(struct pci_dev *dev); |
1983 | void pcibios_free_irq(struct pci_dev *dev); |
1984 | resource_size_t pcibios_default_alignment(void); |
1985 | |
1986 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
1987 | extern struct dev_pm_ops pcibios_pm_ops; |
1988 | #endif |
1989 | |
1990 | #if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG) |
1991 | void __init pci_mmcfg_early_init(void); |
1992 | void __init pci_mmcfg_late_init(void); |
1993 | #else |
1994 | static inline void pci_mmcfg_early_init(void) { } |
1995 | static inline void pci_mmcfg_late_init(void) { } |
1996 | #endif |
1997 | |
1998 | int pci_ext_cfg_avail(void); |
1999 | |
2000 | void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
2001 | void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar); |
2002 | |
2003 | #ifdef CONFIG_PCI_IOV |
2004 | int pci_iov_virtfn_bus(struct pci_dev *dev, int id); |
2005 | int pci_iov_virtfn_devfn(struct pci_dev *dev, int id); |
2006 | |
2007 | int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); |
2008 | void pci_disable_sriov(struct pci_dev *dev); |
2009 | int pci_iov_add_virtfn(struct pci_dev *dev, int id); |
2010 | void pci_iov_remove_virtfn(struct pci_dev *dev, int id); |
2011 | int pci_num_vf(struct pci_dev *dev); |
2012 | int pci_vfs_assigned(struct pci_dev *dev); |
2013 | int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
2014 | int pci_sriov_get_totalvfs(struct pci_dev *dev); |
2015 | int pci_sriov_configure_simple(struct pci_dev *dev, int nr_virtfn); |
2016 | resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno); |
2017 | void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe); |
2018 | |
2019 | /* Arch may override these (weak) */ |
2020 | int pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs); |
2021 | int pcibios_sriov_disable(struct pci_dev *pdev); |
2022 | resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); |
2023 | #else |
2024 | static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id) |
2025 | { |
2026 | return -ENOSYS; |
2027 | } |
2028 | static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id) |
2029 | { |
2030 | return -ENOSYS; |
2031 | } |
2032 | static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) |
2033 | { return -ENODEV; } |
2034 | static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id) |
2035 | { |
2036 | return -ENOSYS; |
2037 | } |
2038 | static inline void pci_iov_remove_virtfn(struct pci_dev *dev, |
2039 | int id) { } |
2040 | static inline void pci_disable_sriov(struct pci_dev *dev) { } |
2041 | static inline int pci_num_vf(struct pci_dev *dev) { return 0; } |
2042 | static inline int pci_vfs_assigned(struct pci_dev *dev) |
2043 | { return 0; } |
2044 | static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
2045 | { return 0; } |
2046 | static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) |
2047 | { return 0; } |
2048 | #define pci_sriov_configure_simple NULL |
2049 | static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) |
2050 | { return 0; } |
2051 | static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { } |
2052 | #endif |
2053 | |
2054 | #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
2055 | void pci_hp_create_module_link(struct pci_slot *pci_slot); |
2056 | void pci_hp_remove_module_link(struct pci_slot *pci_slot); |
2057 | #endif |
2058 | |
2059 | /** |
2060 | * pci_pcie_cap - get the saved PCIe capability offset |
2061 | * @dev: PCI device |
2062 | * |
2063 | * PCIe capability offset is calculated at PCI device initialization |
2064 | * time and saved in the data structure. This function returns saved |
2065 | * PCIe capability offset. Using this instead of pci_find_capability() |
2066 | * reduces unnecessary search in the PCI configuration space. If you |
2067 | * need to calculate PCIe capability offset from raw device for some |
2068 | * reasons, please use pci_find_capability() instead. |
2069 | */ |
2070 | static inline int pci_pcie_cap(struct pci_dev *dev) |
2071 | { |
2072 | return dev->pcie_cap; |
2073 | } |
2074 | |
2075 | /** |
2076 | * pci_is_pcie - check if the PCI device is PCI Express capable |
2077 | * @dev: PCI device |
2078 | * |
2079 | * Returns: true if the PCI device is PCI Express capable, false otherwise. |
2080 | */ |
2081 | static inline bool pci_is_pcie(struct pci_dev *dev) |
2082 | { |
2083 | return pci_pcie_cap(dev); |
2084 | } |
2085 | |
2086 | /** |
2087 | * pcie_caps_reg - get the PCIe Capabilities Register |
2088 | * @dev: PCI device |
2089 | */ |
2090 | static inline u16 pcie_caps_reg(const struct pci_dev *dev) |
2091 | { |
2092 | return dev->pcie_flags_reg; |
2093 | } |
2094 | |
2095 | /** |
2096 | * pci_pcie_type - get the PCIe device/port type |
2097 | * @dev: PCI device |
2098 | */ |
2099 | static inline int pci_pcie_type(const struct pci_dev *dev) |
2100 | { |
2101 | return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
2102 | } |
2103 | |
2104 | static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev) |
2105 | { |
2106 | while (1) { |
2107 | if (!pci_is_pcie(dev)) |
2108 | break; |
2109 | if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) |
2110 | return dev; |
2111 | if (!dev->bus->self) |
2112 | break; |
2113 | dev = dev->bus->self; |
2114 | } |
2115 | return NULL; |
2116 | } |
2117 | |
2118 | void pci_request_acs(void); |
2119 | bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
2120 | bool pci_acs_path_enabled(struct pci_dev *start, |
2121 | struct pci_dev *end, u16 acs_flags); |
2122 | int pci_enable_atomic_ops_to_root(struct pci_dev *dev, u32 cap_mask); |
2123 | |
2124 | #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
2125 | #define PCI_VPD_LRDT_ID(x) ((x) | PCI_VPD_LRDT) |
2126 | |
2127 | /* Large Resource Data Type Tag Item Names */ |
2128 | #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ |
2129 | #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ |
2130 | #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ |
2131 | |
2132 | #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) |
2133 | #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) |
2134 | #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) |
2135 | |
2136 | /* Small Resource Data Type Tag Item Names */ |
2137 | #define PCI_VPD_STIN_END 0x0f /* End */ |
2138 | |
2139 | #define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3) |
2140 | |
2141 | #define PCI_VPD_SRDT_TIN_MASK 0x78 |
2142 | #define PCI_VPD_SRDT_LEN_MASK 0x07 |
2143 | #define PCI_VPD_LRDT_TIN_MASK 0x7f |
2144 | |
2145 | #define PCI_VPD_LRDT_TAG_SIZE 3 |
2146 | #define PCI_VPD_SRDT_TAG_SIZE 1 |
2147 | |
2148 | #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
2149 | |
2150 | #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
2151 | #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" |
2152 | #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" |
2153 | #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
2154 | |
2155 | /** |
2156 | * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length |
2157 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag |
2158 | * |
2159 | * Returns the extracted Large Resource Data Type length. |
2160 | */ |
2161 | static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) |
2162 | { |
2163 | return (u16)lrdt[1] + ((u16)lrdt[2] << 8); |
2164 | } |
2165 | |
2166 | /** |
2167 | * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item |
2168 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag |
2169 | * |
2170 | * Returns the extracted Large Resource Data Type Tag item. |
2171 | */ |
2172 | static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt) |
2173 | { |
2174 | return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK); |
2175 | } |
2176 | |
2177 | /** |
2178 | * pci_vpd_srdt_size - Extracts the Small Resource Data Type length |
2179 | * @srdt: Pointer to the beginning of the Small Resource Data Type tag |
2180 | * |
2181 | * Returns the extracted Small Resource Data Type length. |
2182 | */ |
2183 | static inline u8 pci_vpd_srdt_size(const u8 *srdt) |
2184 | { |
2185 | return (*srdt) & PCI_VPD_SRDT_LEN_MASK; |
2186 | } |
2187 | |
2188 | /** |
2189 | * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item |
2190 | * @srdt: Pointer to the beginning of the Small Resource Data Type tag |
2191 | * |
2192 | * Returns the extracted Small Resource Data Type Tag Item. |
2193 | */ |
2194 | static inline u8 pci_vpd_srdt_tag(const u8 *srdt) |
2195 | { |
2196 | return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3; |
2197 | } |
2198 | |
2199 | /** |
2200 | * pci_vpd_info_field_size - Extracts the information field length |
2201 | * @lrdt: Pointer to the beginning of an information field header |
2202 | * |
2203 | * Returns the extracted information field length. |
2204 | */ |
2205 | static inline u8 pci_vpd_info_field_size(const u8 *info_field) |
2206 | { |
2207 | return info_field[2]; |
2208 | } |
2209 | |
2210 | /** |
2211 | * pci_vpd_find_tag - Locates the Resource Data Type tag provided |
2212 | * @buf: Pointer to buffered vpd data |
2213 | * @off: The offset into the buffer at which to begin the search |
2214 | * @len: The length of the vpd buffer |
2215 | * @rdt: The Resource Data Type to search for |
2216 | * |
2217 | * Returns the index where the Resource Data Type was found or |
2218 | * -ENOENT otherwise. |
2219 | */ |
2220 | int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); |
2221 | |
2222 | /** |
2223 | * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD |
2224 | * @buf: Pointer to buffered vpd data |
2225 | * @off: The offset into the buffer at which to begin the search |
2226 | * @len: The length of the buffer area, relative to off, in which to search |
2227 | * @kw: The keyword to search for |
2228 | * |
2229 | * Returns the index where the information field keyword was found or |
2230 | * -ENOENT otherwise. |
2231 | */ |
2232 | int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, |
2233 | unsigned int len, const char *kw); |
2234 | |
2235 | /* PCI <-> OF binding helpers */ |
2236 | #ifdef CONFIG_OF |
2237 | struct device_node; |
2238 | struct irq_domain; |
2239 | void pci_set_of_node(struct pci_dev *dev); |
2240 | void pci_release_of_node(struct pci_dev *dev); |
2241 | void pci_set_bus_of_node(struct pci_bus *bus); |
2242 | void pci_release_bus_of_node(struct pci_bus *bus); |
2243 | struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus); |
2244 | int pci_parse_request_of_pci_ranges(struct device *dev, |
2245 | struct list_head *resources, |
2246 | struct resource **bus_range); |
2247 | |
2248 | /* Arch may override this (weak) */ |
2249 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); |
2250 | |
2251 | #else /* CONFIG_OF */ |
2252 | static inline void pci_set_of_node(struct pci_dev *dev) { } |
2253 | static inline void pci_release_of_node(struct pci_dev *dev) { } |
2254 | static inline void pci_set_bus_of_node(struct pci_bus *bus) { } |
2255 | static inline void pci_release_bus_of_node(struct pci_bus *bus) { } |
2256 | static inline struct irq_domain * |
2257 | pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } |
2258 | static inline int pci_parse_request_of_pci_ranges(struct device *dev, |
2259 | struct list_head *resources, |
2260 | struct resource **bus_range) |
2261 | { |
2262 | return -EINVAL; |
2263 | } |
2264 | #endif /* CONFIG_OF */ |
2265 | |
2266 | static inline struct device_node * |
2267 | pci_device_to_OF_node(const struct pci_dev *pdev) |
2268 | { |
2269 | return pdev ? pdev->dev.of_node : NULL; |
2270 | } |
2271 | |
2272 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
2273 | { |
2274 | return bus ? bus->dev.of_node : NULL; |
2275 | } |
2276 | |
2277 | #ifdef CONFIG_ACPI |
2278 | struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); |
2279 | |
2280 | void |
2281 | pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); |
2282 | #else |
2283 | static inline struct irq_domain * |
2284 | pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } |
2285 | #endif |
2286 | |
2287 | #ifdef CONFIG_EEH |
2288 | static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) |
2289 | { |
2290 | return pdev->dev.archdata.edev; |
2291 | } |
2292 | #endif |
2293 | |
2294 | void pci_add_dma_alias(struct pci_dev *dev, u8 devfn); |
2295 | bool pci_devs_are_dma_aliases(struct pci_dev *dev1, struct pci_dev *dev2); |
2296 | int pci_for_each_dma_alias(struct pci_dev *pdev, |
2297 | int (*fn)(struct pci_dev *pdev, |
2298 | u16 alias, void *data), void *data); |
2299 | |
2300 | /* Helper functions for operation of device flag */ |
2301 | static inline void pci_set_dev_assigned(struct pci_dev *pdev) |
2302 | { |
2303 | pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED; |
2304 | } |
2305 | static inline void pci_clear_dev_assigned(struct pci_dev *pdev) |
2306 | { |
2307 | pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED; |
2308 | } |
2309 | static inline bool pci_is_dev_assigned(struct pci_dev *pdev) |
2310 | { |
2311 | return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED; |
2312 | } |
2313 | |
2314 | /** |
2315 | * pci_ari_enabled - query ARI forwarding status |
2316 | * @bus: the PCI bus |
2317 | * |
2318 | * Returns true if ARI forwarding is enabled. |
2319 | */ |
2320 | static inline bool pci_ari_enabled(struct pci_bus *bus) |
2321 | { |
2322 | return bus->self && bus->self->ari_enabled; |
2323 | } |
2324 | |
2325 | /** |
2326 | * pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain |
2327 | * @pdev: PCI device to check |
2328 | * |
2329 | * Walk upwards from @pdev and check for each encountered bridge if it's part |
2330 | * of a Thunderbolt controller. Reaching the host bridge means @pdev is not |
2331 | * Thunderbolt-attached. (But rather soldered to the mainboard usually.) |
2332 | */ |
2333 | static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev) |
2334 | { |
2335 | struct pci_dev *parent = pdev; |
2336 | |
2337 | if (pdev->is_thunderbolt) |
2338 | return true; |
2339 | |
2340 | while ((parent = pci_upstream_bridge(parent))) |
2341 | if (parent->is_thunderbolt) |
2342 | return true; |
2343 | |
2344 | return false; |
2345 | } |
2346 | |
2347 | #if defined(CONFIG_PCIEPORTBUS) || defined(CONFIG_EEH) |
2348 | void pci_uevent_ers(struct pci_dev *pdev, enum pci_ers_result err_type); |
2349 | #endif |
2350 | |
2351 | /* Provide the legacy pci_dma_* API */ |
2352 | #include <linux/pci-dma-compat.h> |
2353 | |
2354 | #define pci_printk(level, pdev, fmt, arg...) \ |
2355 | dev_printk(level, &(pdev)->dev, fmt, ##arg) |
2356 | |
2357 | #define pci_emerg(pdev, fmt, arg...) dev_emerg(&(pdev)->dev, fmt, ##arg) |
2358 | #define pci_alert(pdev, fmt, arg...) dev_alert(&(pdev)->dev, fmt, ##arg) |
2359 | #define pci_crit(pdev, fmt, arg...) dev_crit(&(pdev)->dev, fmt, ##arg) |
2360 | #define pci_err(pdev, fmt, arg...) dev_err(&(pdev)->dev, fmt, ##arg) |
2361 | #define pci_warn(pdev, fmt, arg...) dev_warn(&(pdev)->dev, fmt, ##arg) |
2362 | #define pci_notice(pdev, fmt, arg...) dev_notice(&(pdev)->dev, fmt, ##arg) |
2363 | #define pci_info(pdev, fmt, arg...) dev_info(&(pdev)->dev, fmt, ##arg) |
2364 | #define pci_dbg(pdev, fmt, arg...) dev_dbg(&(pdev)->dev, fmt, ##arg) |
2365 | |
2366 | #endif /* LINUX_PCI_H */ |
2367 | |