1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Thunderbolt driver - bus logic (NHI independent)
5 * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
6 * Copyright (C) 2018, Intel Corporation
12 #include <linux/nvmem-provider.h>
13 #include <linux/pci.h>
14 #include <linux/thunderbolt.h>
15 #include <linux/uuid.h>
16 #include <linux/bitfield.h>
22 #define NVM_MIN_SIZE SZ_32K
23 #define NVM_MAX_SIZE SZ_512K
24 #define NVM_DATA_DWORDS 16
26 /* Keep link controller awake during update */
27 #define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
28 /* Disable CLx if not supported */
29 #define QUIRK_NO_CLX BIT(1)
32 * struct tb_nvm - Structure holding NVM information
33 * @dev: Owner of the NVM
34 * @major: Major version number of the active NVM portion
35 * @minor: Minor version number of the active NVM portion
36 * @id: Identifier used with both NVM portions
37 * @active: Active portion NVMem device
38 * @active_size: Size in bytes of the active NVM
39 * @non_active: Non-active portion NVMem device
40 * @buf: Buffer where the NVM image is stored before it is written to
41 * the actual NVM flash device
42 * @buf_data_start: Where the actual image starts after skipping
44 * @buf_data_size: Number of bytes actually consumed by the new NVM
46 * @authenticating: The device is authenticating the new NVM
47 * @flushed: The image has been flushed to the storage area
48 * @vops: Router vendor specific NVM operations (optional)
50 * The user of this structure needs to handle serialization of possible
58 struct nvmem_device *active;
60 struct nvmem_device *non_active;
66 const struct tb_nvm_vendor_ops *vops;
69 enum tb_nvm_write_ops {
70 WRITE_AND_AUTHENTICATE = 1,
72 AUTHENTICATE_ONLY = 3,
75 #define TB_SWITCH_KEY_SIZE 32
76 #define TB_SWITCH_MAX_DEPTH 6
77 #define USB4_SWITCH_MAX_DEPTH 5
80 * enum tb_switch_tmu_rate - TMU refresh rate
81 * @TB_SWITCH_TMU_RATE_OFF: %0 (Disable Time Sync handshake)
82 * @TB_SWITCH_TMU_RATE_HIFI: %16 us time interval between successive
83 * transmission of the Delay Request TSNOS
84 * (Time Sync Notification Ordered Set) on a Link
85 * @TB_SWITCH_TMU_RATE_NORMAL: %1 ms time interval between successive
86 * transmission of the Delay Request TSNOS on
89 enum tb_switch_tmu_rate {
90 TB_SWITCH_TMU_RATE_OFF = 0,
91 TB_SWITCH_TMU_RATE_HIFI = 16,
92 TB_SWITCH_TMU_RATE_NORMAL = 1000,
96 * struct tb_switch_tmu - Structure holding switch TMU configuration
97 * @cap: Offset to the TMU capability (%0 if not found)
98 * @has_ucap: Does the switch support uni-directional mode
99 * @rate: TMU refresh rate related to upstream switch. In case of root
100 * switch this holds the domain rate. Reflects the HW setting.
101 * @unidirectional: Is the TMU in uni-directional or bi-directional mode
102 * related to upstream switch. Don't care for root switch.
103 * Reflects the HW setting.
104 * @unidirectional_request: Is the new TMU mode: uni-directional or bi-directional
105 * that is requested to be set. Related to upstream switch.
106 * Don't care for root switch.
107 * @rate_request: TMU new refresh rate related to upstream switch that is
108 * requested to be set. In case of root switch, this holds
109 * the new domain rate that is requested to be set.
111 struct tb_switch_tmu {
114 enum tb_switch_tmu_rate rate;
116 bool unidirectional_request;
117 enum tb_switch_tmu_rate rate_request;
122 /* CL0s and CL1 are enabled and supported together */
128 * struct tb_switch - a thunderbolt switch
129 * @dev: Device for the switch
130 * @config: Switch configuration
131 * @ports: Ports in this switch
132 * @dma_port: If the switch has port supporting DMA configuration based
133 * mailbox this will hold the pointer to that (%NULL
134 * otherwise). If set it also means the switch has
136 * @tmu: The switch TMU configuration
137 * @tb: Pointer to the domain the switch belongs to
138 * @uid: Unique ID of the switch
139 * @uuid: UUID of the switch (or %NULL if not supported)
140 * @vendor: Vendor ID of the switch
141 * @device: Device ID of the switch
142 * @vendor_name: Name of the vendor (or %NULL if not known)
143 * @device_name: Name of the device (or %NULL if not known)
144 * @link_speed: Speed of the link in Gb/s
145 * @link_width: Width of the link (1 or 2)
146 * @link_usb4: Upstream link is USB4
147 * @generation: Switch Thunderbolt generation
148 * @cap_plug_events: Offset to the plug events capability (%0 if not found)
149 * @cap_vsec_tmu: Offset to the TMU vendor specific capability (%0 if not found)
150 * @cap_lc: Offset to the link controller capability (%0 if not found)
151 * @cap_lp: Offset to the low power (CLx for TBT) capability (%0 if not found)
152 * @is_unplugged: The switch is going away
153 * @drom: DROM of the switch (%NULL if not found)
154 * @nvm: Pointer to the NVM if the switch has one (%NULL otherwise)
155 * @no_nvm_upgrade: Prevent NVM upgrade of this switch
156 * @safe_mode: The switch is in safe-mode
157 * @boot: Whether the switch was already authorized on boot or not
158 * @rpm: The switch supports runtime PM
159 * @authorized: Whether the switch is authorized by user or policy
160 * @security_level: Switch supported security level
161 * @debugfs_dir: Pointer to the debugfs structure
162 * @key: Contains the key used to challenge the device or %NULL if not
163 * supported. Size of the key is %TB_SWITCH_KEY_SIZE.
164 * @connection_id: Connection ID used with ICM messaging
165 * @connection_key: Connection key used with ICM messaging
166 * @link: Root switch link this switch is connected (ICM only)
167 * @depth: Depth in the chain this switch is connected (ICM only)
168 * @rpm_complete: Completion used to wait for runtime resume to
169 * complete (ICM only)
170 * @quirks: Quirks used for this Thunderbolt switch
171 * @credit_allocation: Are the below buffer allocation parameters valid
172 * @max_usb3_credits: Router preferred number of buffers for USB 3.x
173 * @min_dp_aux_credits: Router preferred minimum number of buffers for DP AUX
174 * @min_dp_main_credits: Router preferred minimum number of buffers for DP MAIN
175 * @max_pcie_credits: Router preferred number of buffers for PCIe
176 * @max_dma_credits: Router preferred number of buffers for DMA/P2P
177 * @clx: CLx state on the upstream link of the router
179 * When the switch is being added or removed to the domain (other
180 * switches) you need to have domain lock held.
182 * In USB4 terminology this structure represents a router.
186 struct tb_regs_switch_header config;
187 struct tb_port *ports;
188 struct tb_dma_port *dma_port;
189 struct tb_switch_tmu tmu;
195 const char *vendor_name;
196 const char *device_name;
197 unsigned int link_speed;
198 unsigned int link_width;
200 unsigned int generation;
212 unsigned int authorized;
213 enum tb_security_level security_level;
214 struct dentry *debugfs_dir;
220 struct completion rpm_complete;
221 unsigned long quirks;
222 bool credit_allocation;
223 unsigned int max_usb3_credits;
224 unsigned int min_dp_aux_credits;
225 unsigned int min_dp_main_credits;
226 unsigned int max_pcie_credits;
227 unsigned int max_dma_credits;
232 * struct tb_port - a thunderbolt port, part of a tb_switch
233 * @config: Cached port configuration read from registers
234 * @sw: Switch the port belongs to
235 * @remote: Remote port (%NULL if not connected)
236 * @xdomain: Remote host (%NULL if not connected)
237 * @cap_phy: Offset, zero if not found
238 * @cap_tmu: Offset of the adapter specific TMU capability (%0 if not present)
239 * @cap_adap: Offset of the adapter specific capability (%0 if not present)
240 * @cap_usb4: Offset to the USB4 port capability (%0 if not present)
241 * @usb4: Pointer to the USB4 port structure (only if @cap_usb4 is != %0)
242 * @port: Port number on switch
243 * @disabled: Disabled by eeprom or enabled but not implemented
244 * @bonded: true if the port is bonded (two lanes combined as one)
245 * @dual_link_port: If the switch is connected using two ports, points
247 * @link_nr: Is this primary or secondary port on the dual_link.
248 * @in_hopids: Currently allocated input HopIDs
249 * @out_hopids: Currently allocated output HopIDs
250 * @list: Used to link ports to DP resources list
251 * @total_credits: Total number of buffers available for this port
252 * @ctl_credits: Buffers reserved for control path
253 * @dma_credits: Number of credits allocated for DMA tunneling for all
254 * DMA paths through this port.
255 * @max_bw: Maximum possible bandwidth through this adapter if set to
258 * In USB4 terminology this structure represents an adapter (protocol or
262 struct tb_regs_port_header config;
263 struct tb_switch *sw;
264 struct tb_port *remote;
265 struct tb_xdomain *xdomain;
270 struct usb4_port *usb4;
274 struct tb_port *dual_link_port;
276 struct ida in_hopids;
277 struct ida out_hopids;
278 struct list_head list;
279 unsigned int total_credits;
280 unsigned int ctl_credits;
281 unsigned int dma_credits;
286 * struct usb4_port - USB4 port device
287 * @dev: Device for the port
288 * @port: Pointer to the lane 0 adapter
289 * @can_offline: Does the port have necessary platform support to moved
290 * it into offline mode and back
291 * @offline: The port is currently in offline mode
292 * @margining: Pointer to margining structure if enabled
296 struct tb_port *port;
299 #ifdef CONFIG_USB4_DEBUGFS_MARGINING
300 struct tb_margining *margining;
305 * tb_retimer: Thunderbolt retimer
306 * @dev: Device for the retimer
307 * @tb: Pointer to the domain the retimer belongs to
308 * @index: Retimer index facing the router USB4 port
309 * @vendor: Vendor ID of the retimer
310 * @device: Device ID of the retimer
311 * @port: Pointer to the lane 0 adapter
312 * @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
313 * @no_nvm_upgrade: Prevent NVM upgrade of this retimer
314 * @auth_status: Status of last NVM authentication
322 struct tb_port *port;
329 * struct tb_path_hop - routing information for a tb_path
330 * @in_port: Ingress port of a switch
331 * @out_port: Egress port of a switch where the packet is routed out
332 * (must be on the same switch than @in_port)
333 * @in_hop_index: HopID where the path configuration entry is placed in
334 * the path config space of @in_port.
335 * @in_counter_index: Used counter index (not used in the driver
336 * currently, %-1 to disable)
337 * @next_hop_index: HopID of the packet when it is routed out from @out_port
338 * @initial_credits: Number of initial flow control credits allocated for
340 * @nfc_credits: Number of non-flow controlled buffers allocated for the
343 * Hop configuration is always done on the IN port of a switch.
344 * in_port and out_port have to be on the same switch. Packets arriving on
345 * in_port with "hop" = in_hop_index will get routed to through out_port. The
346 * next hop to take (on out_port->remote) is determined by
347 * next_hop_index. When routing packet to another switch (out->remote is
348 * set) the @next_hop_index must match the @in_hop_index of that next
349 * hop to make routing possible.
351 * in_counter_index is the index of a counter (in TB_CFG_COUNTERS) on the in
355 struct tb_port *in_port;
356 struct tb_port *out_port;
358 int in_counter_index;
360 unsigned int initial_credits;
361 unsigned int nfc_credits;
365 * enum tb_path_port - path options mask
366 * @TB_PATH_NONE: Do not activate on any hop on path
367 * @TB_PATH_SOURCE: Activate on the first hop (out of src)
368 * @TB_PATH_INTERNAL: Activate on the intermediate hops (not the first/last)
369 * @TB_PATH_DESTINATION: Activate on the last hop (into dst)
370 * @TB_PATH_ALL: Activate on all hops on the path
375 TB_PATH_INTERNAL = 2,
376 TB_PATH_DESTINATION = 4,
381 * struct tb_path - a unidirectional path between two ports
382 * @tb: Pointer to the domain structure
383 * @name: Name of the path (used for debugging)
384 * @ingress_shared_buffer: Shared buffering used for ingress ports on the path
385 * @egress_shared_buffer: Shared buffering used for egress ports on the path
386 * @ingress_fc_enable: Flow control for ingress ports on the path
387 * @egress_fc_enable: Flow control for egress ports on the path
388 * @priority: Priority group if the path
389 * @weight: Weight of the path inside the priority group
390 * @drop_packages: Drop packages from queue tail or head
391 * @activated: Is the path active
392 * @clear_fc: Clear all flow control from the path config space entries
393 * when deactivating this path
395 * @path_length: How many hops the path uses
396 * @alloc_hopid: Does this path consume port HopID
398 * A path consists of a number of hops (see &struct tb_path_hop). To
399 * establish a PCIe tunnel two paths have to be created between the two
405 enum tb_path_port ingress_shared_buffer;
406 enum tb_path_port egress_shared_buffer;
407 enum tb_path_port ingress_fc_enable;
408 enum tb_path_port egress_fc_enable;
410 unsigned int priority:3;
415 struct tb_path_hop *hops;
420 /* HopIDs 0-7 are reserved by the Thunderbolt protocol */
421 #define TB_PATH_MIN_HOPID 8
423 * Support paths from the farthest (depth 6) router to the host and back
424 * to the same level (not necessarily to the same router).
426 #define TB_PATH_MAX_HOPS (7 * 2)
428 /* Possible wake types */
429 #define TB_WAKE_ON_CONNECT BIT(0)
430 #define TB_WAKE_ON_DISCONNECT BIT(1)
431 #define TB_WAKE_ON_USB4 BIT(2)
432 #define TB_WAKE_ON_USB3 BIT(3)
433 #define TB_WAKE_ON_PCIE BIT(4)
434 #define TB_WAKE_ON_DP BIT(5)
437 * struct tb_cm_ops - Connection manager specific operations vector
438 * @driver_ready: Called right after control channel is started. Used by
439 * ICM to send driver ready message to the firmware.
440 * @start: Starts the domain
441 * @stop: Stops the domain
442 * @suspend_noirq: Connection manager specific suspend_noirq
443 * @resume_noirq: Connection manager specific resume_noirq
444 * @suspend: Connection manager specific suspend
445 * @freeze_noirq: Connection manager specific freeze_noirq
446 * @thaw_noirq: Connection manager specific thaw_noirq
447 * @complete: Connection manager specific complete
448 * @runtime_suspend: Connection manager specific runtime_suspend
449 * @runtime_resume: Connection manager specific runtime_resume
450 * @runtime_suspend_switch: Runtime suspend a switch
451 * @runtime_resume_switch: Runtime resume a switch
452 * @handle_event: Handle thunderbolt event
453 * @get_boot_acl: Get boot ACL list
454 * @set_boot_acl: Set boot ACL list
455 * @disapprove_switch: Disapprove switch (disconnect PCIe tunnel)
456 * @approve_switch: Approve switch
457 * @add_switch_key: Add key to switch
458 * @challenge_switch_key: Challenge switch using key
459 * @disconnect_pcie_paths: Disconnects PCIe paths before NVM update
460 * @approve_xdomain_paths: Approve (establish) XDomain DMA paths
461 * @disconnect_xdomain_paths: Disconnect XDomain DMA paths
462 * @usb4_switch_op: Optional proxy for USB4 router operations. If set
463 * this will be called whenever USB4 router operation is
464 * performed. If this returns %-EOPNOTSUPP then the
465 * native USB4 router operation is called.
466 * @usb4_switch_nvm_authenticate_status: Optional callback that the CM
467 * implementation can be used to
468 * return status of USB4 NVM_AUTH
472 int (*driver_ready)(struct tb *tb);
473 int (*start)(struct tb *tb);
474 void (*stop)(struct tb *tb);
475 int (*suspend_noirq)(struct tb *tb);
476 int (*resume_noirq)(struct tb *tb);
477 int (*suspend)(struct tb *tb);
478 int (*freeze_noirq)(struct tb *tb);
479 int (*thaw_noirq)(struct tb *tb);
480 void (*complete)(struct tb *tb);
481 int (*runtime_suspend)(struct tb *tb);
482 int (*runtime_resume)(struct tb *tb);
483 int (*runtime_suspend_switch)(struct tb_switch *sw);
484 int (*runtime_resume_switch)(struct tb_switch *sw);
485 void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
486 const void *buf, size_t size);
487 int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
488 int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
489 int (*disapprove_switch)(struct tb *tb, struct tb_switch *sw);
490 int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
491 int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
492 int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
493 const u8 *challenge, u8 *response);
494 int (*disconnect_pcie_paths)(struct tb *tb);
495 int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
496 int transmit_path, int transmit_ring,
497 int receive_path, int receive_ring);
498 int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
499 int transmit_path, int transmit_ring,
500 int receive_path, int receive_ring);
501 int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
502 u8 *status, const void *tx_data, size_t tx_data_len,
503 void *rx_data, size_t rx_data_len);
504 int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw,
508 static inline void *tb_priv(struct tb *tb)
510 return (void *)tb->privdata;
513 #define TB_AUTOSUSPEND_DELAY 15000 /* ms */
515 /* helper functions & macros */
518 * tb_upstream_port() - return the upstream port of a switch
520 * Every switch has an upstream port (for the root switch it is the NHI).
522 * During switch alloc/init tb_upstream_port()->remote may be NULL, even for
523 * non root switches (on the NHI port remote is always NULL).
525 * Return: Returns the upstream port of the switch.
527 static inline struct tb_port *tb_upstream_port(struct tb_switch *sw)
529 return &sw->ports[sw->config.upstream_port_number];
533 * tb_is_upstream_port() - Is the port upstream facing
534 * @port: Port to check
536 * Returns true if @port is upstream facing port. In case of dual link
537 * ports both return true.
539 static inline bool tb_is_upstream_port(const struct tb_port *port)
541 const struct tb_port *upstream_port = tb_upstream_port(port->sw);
542 return port == upstream_port || port->dual_link_port == upstream_port;
545 static inline u64 tb_route(const struct tb_switch *sw)
547 return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
550 static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
554 port = route >> (sw->config.depth * 8);
555 if (WARN_ON(port > sw->config.max_port_number))
557 return &sw->ports[port];
561 * tb_port_has_remote() - Does the port have switch connected downstream
562 * @port: Port to check
564 * Returns true only when the port is primary port and has remote set.
566 static inline bool tb_port_has_remote(const struct tb_port *port)
568 if (tb_is_upstream_port(port))
572 if (port->dual_link_port && port->link_nr)
578 static inline bool tb_port_is_null(const struct tb_port *port)
580 return port && port->port && port->config.type == TB_TYPE_PORT;
583 static inline bool tb_port_is_nhi(const struct tb_port *port)
585 return port && port->config.type == TB_TYPE_NHI;
588 static inline bool tb_port_is_pcie_down(const struct tb_port *port)
590 return port && port->config.type == TB_TYPE_PCIE_DOWN;
593 static inline bool tb_port_is_pcie_up(const struct tb_port *port)
595 return port && port->config.type == TB_TYPE_PCIE_UP;
598 static inline bool tb_port_is_dpin(const struct tb_port *port)
600 return port && port->config.type == TB_TYPE_DP_HDMI_IN;
603 static inline bool tb_port_is_dpout(const struct tb_port *port)
605 return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
608 static inline bool tb_port_is_usb3_down(const struct tb_port *port)
610 return port && port->config.type == TB_TYPE_USB3_DOWN;
613 static inline bool tb_port_is_usb3_up(const struct tb_port *port)
615 return port && port->config.type == TB_TYPE_USB3_UP;
618 static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
619 enum tb_cfg_space space, u32 offset, u32 length)
621 if (sw->is_unplugged)
623 return tb_cfg_read(sw->tb->ctl,
632 static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
633 enum tb_cfg_space space, u32 offset, u32 length)
635 if (sw->is_unplugged)
637 return tb_cfg_write(sw->tb->ctl,
646 static inline int tb_port_read(struct tb_port *port, void *buffer,
647 enum tb_cfg_space space, u32 offset, u32 length)
649 if (port->sw->is_unplugged)
651 return tb_cfg_read(port->sw->tb->ctl,
660 static inline int tb_port_write(struct tb_port *port, const void *buffer,
661 enum tb_cfg_space space, u32 offset, u32 length)
663 if (port->sw->is_unplugged)
665 return tb_cfg_write(port->sw->tb->ctl,
674 #define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
675 #define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
676 #define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
677 #define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
678 #define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
680 #define __TB_SW_PRINT(level, sw, fmt, arg...) \
682 const struct tb_switch *__sw = (sw); \
683 level(__sw->tb, "%llx: " fmt, \
684 tb_route(__sw), ## arg); \
686 #define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
687 #define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ##arg)
688 #define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ##arg)
689 #define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ##arg)
691 #define __TB_PORT_PRINT(level, _port, fmt, arg...) \
693 const struct tb_port *__port = (_port); \
694 level(__port->sw->tb, "%llx:%u: " fmt, \
695 tb_route(__port->sw), __port->port, ## arg); \
697 #define tb_port_WARN(port, fmt, arg...) \
698 __TB_PORT_PRINT(tb_WARN, port, fmt, ##arg)
699 #define tb_port_warn(port, fmt, arg...) \
700 __TB_PORT_PRINT(tb_warn, port, fmt, ##arg)
701 #define tb_port_info(port, fmt, arg...) \
702 __TB_PORT_PRINT(tb_info, port, fmt, ##arg)
703 #define tb_port_dbg(port, fmt, arg...) \
704 __TB_PORT_PRINT(tb_dbg, port, fmt, ##arg)
706 struct tb *icm_probe(struct tb_nhi *nhi);
707 struct tb *tb_probe(struct tb_nhi *nhi);
709 extern struct device_type tb_domain_type;
710 extern struct device_type tb_retimer_type;
711 extern struct device_type tb_switch_type;
712 extern struct device_type usb4_port_device_type;
714 int tb_domain_init(void);
715 void tb_domain_exit(void);
716 int tb_xdomain_init(void);
717 void tb_xdomain_exit(void);
719 struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize);
720 int tb_domain_add(struct tb *tb);
721 void tb_domain_remove(struct tb *tb);
722 int tb_domain_suspend_noirq(struct tb *tb);
723 int tb_domain_resume_noirq(struct tb *tb);
724 int tb_domain_suspend(struct tb *tb);
725 int tb_domain_freeze_noirq(struct tb *tb);
726 int tb_domain_thaw_noirq(struct tb *tb);
727 void tb_domain_complete(struct tb *tb);
728 int tb_domain_runtime_suspend(struct tb *tb);
729 int tb_domain_runtime_resume(struct tb *tb);
730 int tb_domain_disapprove_switch(struct tb *tb, struct tb_switch *sw);
731 int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
732 int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
733 int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
734 int tb_domain_disconnect_pcie_paths(struct tb *tb);
735 int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
736 int transmit_path, int transmit_ring,
737 int receive_path, int receive_ring);
738 int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
739 int transmit_path, int transmit_ring,
740 int receive_path, int receive_ring);
741 int tb_domain_disconnect_all_paths(struct tb *tb);
743 static inline struct tb *tb_domain_get(struct tb *tb)
746 get_device(&tb->dev);
750 static inline void tb_domain_put(struct tb *tb)
752 put_device(&tb->dev);
755 struct tb_nvm *tb_nvm_alloc(struct device *dev);
756 int tb_nvm_read_version(struct tb_nvm *nvm);
757 int tb_nvm_validate(struct tb_nvm *nvm);
758 int tb_nvm_write_headers(struct tb_nvm *nvm);
759 int tb_nvm_add_active(struct tb_nvm *nvm, nvmem_reg_read_t reg_read);
760 int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
762 int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write);
763 void tb_nvm_free(struct tb_nvm *nvm);
764 void tb_nvm_exit(void);
766 typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
767 typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t);
769 int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
770 unsigned int retries, read_block_fn read_block,
771 void *read_block_data);
772 int tb_nvm_write_data(unsigned int address, const void *buf, size_t size,
773 unsigned int retries, write_block_fn write_next_block,
774 void *write_block_data);
776 int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
778 struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
780 struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
781 struct device *parent, u64 route);
782 int tb_switch_configure(struct tb_switch *sw);
783 int tb_switch_add(struct tb_switch *sw);
784 void tb_switch_remove(struct tb_switch *sw);
785 void tb_switch_suspend(struct tb_switch *sw, bool runtime);
786 int tb_switch_resume(struct tb_switch *sw);
787 int tb_switch_reset(struct tb_switch *sw);
788 int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
789 u32 value, int timeout_msec);
790 void tb_sw_set_unplugged(struct tb_switch *sw);
791 struct tb_port *tb_switch_find_port(struct tb_switch *sw,
792 enum tb_port_type type);
793 struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
795 struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
796 struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
799 * tb_switch_for_each_port() - Iterate over each switch port
800 * @sw: Switch whose ports to iterate
801 * @p: Port used as iterator
803 * Iterates over each switch port skipping the control port (port %0).
805 #define tb_switch_for_each_port(sw, p) \
806 for ((p) = &(sw)->ports[1]; \
807 (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
809 static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
812 get_device(&sw->dev);
816 static inline void tb_switch_put(struct tb_switch *sw)
818 put_device(&sw->dev);
821 static inline bool tb_is_switch(const struct device *dev)
823 return dev->type == &tb_switch_type;
826 static inline struct tb_switch *tb_to_switch(struct device *dev)
828 if (tb_is_switch(dev))
829 return container_of(dev, struct tb_switch, dev);
833 static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
835 return tb_to_switch(sw->dev.parent);
838 static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
840 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
841 sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
844 static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
846 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
847 sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
850 static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
852 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
853 switch (sw->config.device_id) {
854 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
855 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
862 static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
864 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
865 switch (sw->config.device_id) {
866 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
867 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
874 static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
876 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
877 switch (sw->config.device_id) {
878 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
879 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
880 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
881 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
882 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
889 static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
891 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
892 switch (sw->config.device_id) {
893 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
894 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
895 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
902 static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
904 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
905 switch (sw->config.device_id) {
906 case PCI_DEVICE_ID_INTEL_TGL_NHI0:
907 case PCI_DEVICE_ID_INTEL_TGL_NHI1:
908 case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
909 case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
917 * tb_switch_is_usb4() - Is the switch USB4 compliant
918 * @sw: Switch to check
920 * Returns true if the @sw is USB4 compliant router, false otherwise.
922 static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
924 return sw->config.thunderbolt_version == USB4_VERSION_1_0;
928 * tb_switch_is_icm() - Is the switch handled by ICM firmware
929 * @sw: Switch to check
931 * In case there is a need to differentiate whether ICM firmware or SW CM
932 * is handling @sw this function can be called. It is valid to call this
933 * after tb_switch_alloc() and tb_switch_configure() has been called
934 * (latter only for SW CM case).
936 static inline bool tb_switch_is_icm(const struct tb_switch *sw)
938 return !sw->config.enabled;
941 int tb_switch_lane_bonding_enable(struct tb_switch *sw);
942 void tb_switch_lane_bonding_disable(struct tb_switch *sw);
943 int tb_switch_configure_link(struct tb_switch *sw);
944 void tb_switch_unconfigure_link(struct tb_switch *sw);
946 bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
947 int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
948 void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
950 int tb_switch_tmu_init(struct tb_switch *sw);
951 int tb_switch_tmu_post_time(struct tb_switch *sw);
952 int tb_switch_tmu_disable(struct tb_switch *sw);
953 int tb_switch_tmu_enable(struct tb_switch *sw);
954 void tb_switch_tmu_configure(struct tb_switch *sw,
955 enum tb_switch_tmu_rate rate,
956 bool unidirectional);
957 void tb_switch_enable_tmu_1st_child(struct tb_switch *sw,
958 enum tb_switch_tmu_rate rate);
960 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled
961 * @sw: Router whose TMU mode to check
962 * @unidirectional: If uni-directional (bi-directional otherwise)
964 * Return true if hardware TMU configuration matches the one passed in
965 * as parameter. That is HiFi/Normal and either uni-directional or bi-directional.
967 static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw,
970 return sw->tmu.rate == sw->tmu.rate_request &&
971 sw->tmu.unidirectional == unidirectional;
974 static inline const char *tb_switch_clx_name(enum tb_clx clx)
977 /* CL0s and CL1 are enabled and supported together */
985 int tb_switch_enable_clx(struct tb_switch *sw, enum tb_clx clx);
986 int tb_switch_disable_clx(struct tb_switch *sw, enum tb_clx clx);
989 * tb_switch_is_clx_enabled() - Checks if the CLx is enabled
990 * @sw: Router to check for the CLx
991 * @clx: The CLx state to check for
993 * Checks if the specified CLx is enabled on the router upstream link.
994 * Not applicable for a host router.
996 static inline bool tb_switch_is_clx_enabled(const struct tb_switch *sw,
999 return sw->clx == clx;
1003 * tb_switch_is_clx_supported() - Is CLx supported on this type of router
1004 * @sw: The router to check CLx support for
1006 static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw)
1008 if (sw->quirks & QUIRK_NO_CLX)
1011 return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
1014 int tb_switch_mask_clx_objections(struct tb_switch *sw);
1016 int tb_switch_pcie_l1_enable(struct tb_switch *sw);
1018 int tb_switch_xhci_connect(struct tb_switch *sw);
1019 void tb_switch_xhci_disconnect(struct tb_switch *sw);
1021 int tb_port_state(struct tb_port *port);
1022 int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
1023 int tb_port_add_nfc_credits(struct tb_port *port, int credits);
1024 int tb_port_clear_counter(struct tb_port *port, int counter);
1025 int tb_port_unlock(struct tb_port *port);
1026 int tb_port_enable(struct tb_port *port);
1027 int tb_port_disable(struct tb_port *port);
1028 int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
1029 void tb_port_release_in_hopid(struct tb_port *port, int hopid);
1030 int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
1031 void tb_port_release_out_hopid(struct tb_port *port, int hopid);
1032 struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
1033 struct tb_port *prev);
1035 static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
1037 return tb_port_is_null(port) && port->sw->credit_allocation;
1041 * tb_for_each_port_on_path() - Iterate over each port on path
1043 * @dst: Destination port
1044 * @p: Port used as iterator
1046 * Walks over each port on path from @src to @dst.
1048 #define tb_for_each_port_on_path(src, dst, p) \
1049 for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
1050 (p) = tb_next_port_on_path((src), (dst), (p)))
1052 int tb_port_get_link_speed(struct tb_port *port);
1053 int tb_port_get_link_width(struct tb_port *port);
1054 int tb_port_set_link_width(struct tb_port *port, unsigned int width);
1055 int tb_port_set_lane_bonding(struct tb_port *port, bool bonding);
1056 int tb_port_lane_bonding_enable(struct tb_port *port);
1057 void tb_port_lane_bonding_disable(struct tb_port *port);
1058 int tb_port_wait_for_link_width(struct tb_port *port, int width,
1060 int tb_port_update_credits(struct tb_port *port);
1061 bool tb_port_is_clx_enabled(struct tb_port *port, enum tb_clx clx);
1063 int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
1064 int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
1065 int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
1066 int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
1067 int tb_port_next_cap(struct tb_port *port, unsigned int offset);
1068 bool tb_port_is_enabled(struct tb_port *port);
1070 bool tb_usb3_port_is_enabled(struct tb_port *port);
1071 int tb_usb3_port_enable(struct tb_port *port, bool enable);
1073 bool tb_pci_port_is_enabled(struct tb_port *port);
1074 int tb_pci_port_enable(struct tb_port *port, bool enable);
1076 int tb_dp_port_hpd_is_active(struct tb_port *port);
1077 int tb_dp_port_hpd_clear(struct tb_port *port);
1078 int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
1079 unsigned int aux_tx, unsigned int aux_rx);
1080 bool tb_dp_port_is_enabled(struct tb_port *port);
1081 int tb_dp_port_enable(struct tb_port *port, bool enable);
1083 struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
1084 struct tb_port *dst, int dst_hopid,
1085 struct tb_port **last, const char *name,
1087 struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
1088 struct tb_port *dst, int dst_hopid, int link_nr,
1090 void tb_path_free(struct tb_path *path);
1091 int tb_path_activate(struct tb_path *path);
1092 void tb_path_deactivate(struct tb_path *path);
1093 bool tb_path_is_invalid(struct tb_path *path);
1094 bool tb_path_port_on_path(const struct tb_path *path,
1095 const struct tb_port *port);
1098 * tb_path_for_each_hop() - Iterate over each hop on path
1099 * @path: Path whose hops to iterate
1100 * @hop: Hop used as iterator
1102 * Iterates over each hop on path.
1104 #define tb_path_for_each_hop(path, hop) \
1105 for ((hop) = &(path)->hops[0]; \
1106 (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
1108 int tb_drom_read(struct tb_switch *sw);
1109 int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
1111 int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
1112 int tb_lc_configure_port(struct tb_port *port);
1113 void tb_lc_unconfigure_port(struct tb_port *port);
1114 int tb_lc_configure_xdomain(struct tb_port *port);
1115 void tb_lc_unconfigure_xdomain(struct tb_port *port);
1116 int tb_lc_start_lane_initialization(struct tb_port *port);
1117 bool tb_lc_is_clx_supported(struct tb_port *port);
1118 bool tb_lc_is_usb_plugged(struct tb_port *port);
1119 bool tb_lc_is_xhci_connected(struct tb_port *port);
1120 int tb_lc_xhci_connect(struct tb_port *port);
1121 void tb_lc_xhci_disconnect(struct tb_port *port);
1122 int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
1123 int tb_lc_set_sleep(struct tb_switch *sw);
1124 bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
1125 bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
1126 int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
1127 int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
1128 int tb_lc_force_power(struct tb_switch *sw);
1130 static inline int tb_route_length(u64 route)
1132 return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT;
1136 * tb_downstream_route() - get route to downstream switch
1138 * Port must not be the upstream port (otherwise a loop is created).
1140 * Return: Returns a route to the switch behind @port.
1142 static inline u64 tb_downstream_route(struct tb_port *port)
1144 return tb_route(port->sw)
1145 | ((u64) port->port << (port->sw->config.depth * 8));
1148 bool tb_is_xdomain_enabled(void);
1149 bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
1150 const void *buf, size_t size);
1151 struct tb_xdomain *tb_xdomain_alloc(struct tb *tb, struct device *parent,
1152 u64 route, const uuid_t *local_uuid,
1153 const uuid_t *remote_uuid);
1154 void tb_xdomain_add(struct tb_xdomain *xd);
1155 void tb_xdomain_remove(struct tb_xdomain *xd);
1156 struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
1159 static inline struct tb_switch *tb_xdomain_parent(struct tb_xdomain *xd)
1161 return tb_to_switch(xd->dev.parent);
1164 int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf,
1166 int tb_retimer_scan(struct tb_port *port, bool add);
1167 void tb_retimer_remove_all(struct tb_port *port);
1169 static inline bool tb_is_retimer(const struct device *dev)
1171 return dev->type == &tb_retimer_type;
1174 static inline struct tb_retimer *tb_to_retimer(struct device *dev)
1176 if (tb_is_retimer(dev))
1177 return container_of(dev, struct tb_retimer, dev);
1181 int usb4_switch_setup(struct tb_switch *sw);
1182 int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
1183 int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
1185 bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
1186 int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags);
1187 int usb4_switch_set_sleep(struct tb_switch *sw);
1188 int usb4_switch_nvm_sector_size(struct tb_switch *sw);
1189 int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
1191 int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsigned int address);
1192 int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
1193 const void *buf, size_t size);
1194 int usb4_switch_nvm_authenticate(struct tb_switch *sw);
1195 int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
1196 int usb4_switch_credits_init(struct tb_switch *sw);
1197 bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
1198 int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1199 int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1200 struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
1201 const struct tb_port *port);
1202 struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
1203 const struct tb_port *port);
1204 int usb4_switch_add_ports(struct tb_switch *sw);
1205 void usb4_switch_remove_ports(struct tb_switch *sw);
1207 int usb4_port_unlock(struct tb_port *port);
1208 int usb4_port_hotplug_enable(struct tb_port *port);
1209 int usb4_port_configure(struct tb_port *port);
1210 void usb4_port_unconfigure(struct tb_port *port);
1211 int usb4_port_configure_xdomain(struct tb_port *port, struct tb_xdomain *xd);
1212 void usb4_port_unconfigure_xdomain(struct tb_port *port);
1213 int usb4_port_router_offline(struct tb_port *port);
1214 int usb4_port_router_online(struct tb_port *port);
1215 int usb4_port_enumerate_retimers(struct tb_port *port);
1216 bool usb4_port_clx_supported(struct tb_port *port);
1217 int usb4_port_margining_caps(struct tb_port *port, u32 *caps);
1218 int usb4_port_hw_margin(struct tb_port *port, unsigned int lanes,
1219 unsigned int ber_level, bool timing, bool right_high,
1221 int usb4_port_sw_margin(struct tb_port *port, unsigned int lanes, bool timing,
1222 bool right_high, u32 counter);
1223 int usb4_port_sw_margin_errors(struct tb_port *port, u32 *errors);
1225 int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index);
1226 int usb4_port_retimer_unset_inbound_sbtx(struct tb_port *port, u8 index);
1227 int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
1229 int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
1230 const void *buf, u8 size);
1231 int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
1232 int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
1233 int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
1234 unsigned int address);
1235 int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
1236 unsigned int address, const void *buf,
1238 int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
1239 int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
1241 int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
1242 unsigned int address, void *buf, size_t size);
1244 int usb4_usb3_port_max_link_rate(struct tb_port *port);
1245 int usb4_usb3_port_actual_link_rate(struct tb_port *port);
1246 int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
1247 int *downstream_bw);
1248 int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
1249 int *downstream_bw);
1250 int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
1251 int *downstream_bw);
1253 static inline bool tb_is_usb4_port_device(const struct device *dev)
1255 return dev->type == &usb4_port_device_type;
1258 static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
1260 if (tb_is_usb4_port_device(dev))
1261 return container_of(dev, struct usb4_port, dev);
1265 struct usb4_port *usb4_port_device_add(struct tb_port *port);
1266 void usb4_port_device_remove(struct usb4_port *usb4);
1267 int usb4_port_device_resume(struct usb4_port *usb4);
1269 void tb_check_quirks(struct tb_switch *sw);
1272 void tb_acpi_add_links(struct tb_nhi *nhi);
1274 bool tb_acpi_is_native(void);
1275 bool tb_acpi_may_tunnel_usb3(void);
1276 bool tb_acpi_may_tunnel_dp(void);
1277 bool tb_acpi_may_tunnel_pcie(void);
1278 bool tb_acpi_is_xdomain_allowed(void);
1280 int tb_acpi_init(void);
1281 void tb_acpi_exit(void);
1282 int tb_acpi_power_on_retimers(struct tb_port *port);
1283 int tb_acpi_power_off_retimers(struct tb_port *port);
1285 static inline void tb_acpi_add_links(struct tb_nhi *nhi) { }
1287 static inline bool tb_acpi_is_native(void) { return true; }
1288 static inline bool tb_acpi_may_tunnel_usb3(void) { return true; }
1289 static inline bool tb_acpi_may_tunnel_dp(void) { return true; }
1290 static inline bool tb_acpi_may_tunnel_pcie(void) { return true; }
1291 static inline bool tb_acpi_is_xdomain_allowed(void) { return true; }
1293 static inline int tb_acpi_init(void) { return 0; }
1294 static inline void tb_acpi_exit(void) { }
1295 static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0; }
1296 static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0; }
1299 #ifdef CONFIG_DEBUG_FS
1300 void tb_debugfs_init(void);
1301 void tb_debugfs_exit(void);
1302 void tb_switch_debugfs_init(struct tb_switch *sw);
1303 void tb_switch_debugfs_remove(struct tb_switch *sw);
1304 void tb_xdomain_debugfs_init(struct tb_xdomain *xd);
1305 void tb_xdomain_debugfs_remove(struct tb_xdomain *xd);
1306 void tb_service_debugfs_init(struct tb_service *svc);
1307 void tb_service_debugfs_remove(struct tb_service *svc);
1309 static inline void tb_debugfs_init(void) { }
1310 static inline void tb_debugfs_exit(void) { }
1311 static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
1312 static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
1313 static inline void tb_xdomain_debugfs_init(struct tb_xdomain *xd) { }
1314 static inline void tb_xdomain_debugfs_remove(struct tb_xdomain *xd) { }
1315 static inline void tb_service_debugfs_init(struct tb_service *svc) { }
1316 static inline void tb_service_debugfs_remove(struct tb_service *svc) { }