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 /* Intel specific NVM offsets */
27 #define NVM_DEVID 0x05
28 #define NVM_VERSION 0x08
29 #define NVM_FLASH_SIZE 0x45
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 * @non_active: Non-active portion NVMem device
39 * @buf: Buffer where the NVM image is stored before it is written to
40 * the actual NVM flash device
41 * @buf_data_size: Number of bytes actually consumed by the new NVM
43 * @authenticating: The device is authenticating the new NVM
44 * @flushed: The image has been flushed to the storage area
46 * The user of this structure needs to handle serialization of possible
54 struct nvmem_device *active;
55 struct nvmem_device *non_active;
62 enum tb_nvm_write_ops {
63 WRITE_AND_AUTHENTICATE = 1,
65 AUTHENTICATE_ONLY = 3,
68 #define TB_SWITCH_KEY_SIZE 32
69 #define TB_SWITCH_MAX_DEPTH 6
70 #define USB4_SWITCH_MAX_DEPTH 5
73 * enum tb_switch_tmu_rate - TMU refresh rate
74 * @TB_SWITCH_TMU_RATE_OFF: %0 (Disable Time Sync handshake)
75 * @TB_SWITCH_TMU_RATE_HIFI: %16 us time interval between successive
76 * transmission of the Delay Request TSNOS
77 * (Time Sync Notification Ordered Set) on a Link
78 * @TB_SWITCH_TMU_RATE_NORMAL: %1 ms time interval between successive
79 * transmission of the Delay Request TSNOS on
82 enum tb_switch_tmu_rate {
83 TB_SWITCH_TMU_RATE_OFF = 0,
84 TB_SWITCH_TMU_RATE_HIFI = 16,
85 TB_SWITCH_TMU_RATE_NORMAL = 1000,
89 * struct tb_switch_tmu - Structure holding switch TMU configuration
90 * @cap: Offset to the TMU capability (%0 if not found)
91 * @has_ucap: Does the switch support uni-directional mode
92 * @rate: TMU refresh rate related to upstream switch. In case of root
93 * switch this holds the domain rate. Reflects the HW setting.
94 * @unidirectional: Is the TMU in uni-directional or bi-directional mode
95 * related to upstream switch. Don't care for root switch.
96 * Reflects the HW setting.
97 * @unidirectional_request: Is the new TMU mode: uni-directional or bi-directional
98 * that is requested to be set. Related to upstream switch.
99 * Don't care for root switch.
100 * @rate_request: TMU new refresh rate related to upstream switch that is
101 * requested to be set. In case of root switch, this holds
102 * the new domain rate that is requested to be set.
104 struct tb_switch_tmu {
107 enum tb_switch_tmu_rate rate;
109 bool unidirectional_request;
110 enum tb_switch_tmu_rate rate_request;
115 /* CL0s and CL1 are enabled and supported together */
121 * struct tb_switch - a thunderbolt switch
122 * @dev: Device for the switch
123 * @config: Switch configuration
124 * @ports: Ports in this switch
125 * @dma_port: If the switch has port supporting DMA configuration based
126 * mailbox this will hold the pointer to that (%NULL
127 * otherwise). If set it also means the switch has
129 * @tmu: The switch TMU configuration
130 * @tb: Pointer to the domain the switch belongs to
131 * @uid: Unique ID of the switch
132 * @uuid: UUID of the switch (or %NULL if not supported)
133 * @vendor: Vendor ID of the switch
134 * @device: Device ID of the switch
135 * @vendor_name: Name of the vendor (or %NULL if not known)
136 * @device_name: Name of the device (or %NULL if not known)
137 * @link_speed: Speed of the link in Gb/s
138 * @link_width: Width of the link (1 or 2)
139 * @link_usb4: Upstream link is USB4
140 * @generation: Switch Thunderbolt generation
141 * @cap_plug_events: Offset to the plug events capability (%0 if not found)
142 * @cap_vsec_tmu: Offset to the TMU vendor specific capability (%0 if not found)
143 * @cap_lc: Offset to the link controller capability (%0 if not found)
144 * @cap_lp: Offset to the low power (CLx for TBT) capability (%0 if not found)
145 * @is_unplugged: The switch is going away
146 * @drom: DROM of the switch (%NULL if not found)
147 * @nvm: Pointer to the NVM if the switch has one (%NULL otherwise)
148 * @no_nvm_upgrade: Prevent NVM upgrade of this switch
149 * @safe_mode: The switch is in safe-mode
150 * @boot: Whether the switch was already authorized on boot or not
151 * @rpm: The switch supports runtime PM
152 * @authorized: Whether the switch is authorized by user or policy
153 * @security_level: Switch supported security level
154 * @debugfs_dir: Pointer to the debugfs structure
155 * @key: Contains the key used to challenge the device or %NULL if not
156 * supported. Size of the key is %TB_SWITCH_KEY_SIZE.
157 * @connection_id: Connection ID used with ICM messaging
158 * @connection_key: Connection key used with ICM messaging
159 * @link: Root switch link this switch is connected (ICM only)
160 * @depth: Depth in the chain this switch is connected (ICM only)
161 * @rpm_complete: Completion used to wait for runtime resume to
162 * complete (ICM only)
163 * @quirks: Quirks used for this Thunderbolt switch
164 * @credit_allocation: Are the below buffer allocation parameters valid
165 * @max_usb3_credits: Router preferred number of buffers for USB 3.x
166 * @min_dp_aux_credits: Router preferred minimum number of buffers for DP AUX
167 * @min_dp_main_credits: Router preferred minimum number of buffers for DP MAIN
168 * @max_pcie_credits: Router preferred number of buffers for PCIe
169 * @max_dma_credits: Router preferred number of buffers for DMA/P2P
170 * @clx: CLx state on the upstream link of the router
172 * When the switch is being added or removed to the domain (other
173 * switches) you need to have domain lock held.
175 * In USB4 terminology this structure represents a router.
179 struct tb_regs_switch_header config;
180 struct tb_port *ports;
181 struct tb_dma_port *dma_port;
182 struct tb_switch_tmu tmu;
188 const char *vendor_name;
189 const char *device_name;
190 unsigned int link_speed;
191 unsigned int link_width;
193 unsigned int generation;
205 unsigned int authorized;
206 enum tb_security_level security_level;
207 struct dentry *debugfs_dir;
213 struct completion rpm_complete;
214 unsigned long quirks;
215 bool credit_allocation;
216 unsigned int max_usb3_credits;
217 unsigned int min_dp_aux_credits;
218 unsigned int min_dp_main_credits;
219 unsigned int max_pcie_credits;
220 unsigned int max_dma_credits;
225 * struct tb_port - a thunderbolt port, part of a tb_switch
226 * @config: Cached port configuration read from registers
227 * @sw: Switch the port belongs to
228 * @remote: Remote port (%NULL if not connected)
229 * @xdomain: Remote host (%NULL if not connected)
230 * @cap_phy: Offset, zero if not found
231 * @cap_tmu: Offset of the adapter specific TMU capability (%0 if not present)
232 * @cap_adap: Offset of the adapter specific capability (%0 if not present)
233 * @cap_usb4: Offset to the USB4 port capability (%0 if not present)
234 * @usb4: Pointer to the USB4 port structure (only if @cap_usb4 is != %0)
235 * @port: Port number on switch
236 * @disabled: Disabled by eeprom or enabled but not implemented
237 * @bonded: true if the port is bonded (two lanes combined as one)
238 * @dual_link_port: If the switch is connected using two ports, points
240 * @link_nr: Is this primary or secondary port on the dual_link.
241 * @in_hopids: Currently allocated input HopIDs
242 * @out_hopids: Currently allocated output HopIDs
243 * @list: Used to link ports to DP resources list
244 * @total_credits: Total number of buffers available for this port
245 * @ctl_credits: Buffers reserved for control path
246 * @dma_credits: Number of credits allocated for DMA tunneling for all
247 * DMA paths through this port.
249 * In USB4 terminology this structure represents an adapter (protocol or
253 struct tb_regs_port_header config;
254 struct tb_switch *sw;
255 struct tb_port *remote;
256 struct tb_xdomain *xdomain;
261 struct usb4_port *usb4;
265 struct tb_port *dual_link_port;
267 struct ida in_hopids;
268 struct ida out_hopids;
269 struct list_head list;
270 unsigned int total_credits;
271 unsigned int ctl_credits;
272 unsigned int dma_credits;
276 * struct usb4_port - USB4 port device
277 * @dev: Device for the port
278 * @port: Pointer to the lane 0 adapter
279 * @can_offline: Does the port have necessary platform support to moved
280 * it into offline mode and back
281 * @offline: The port is currently in offline mode
285 struct tb_port *port;
291 * tb_retimer: Thunderbolt retimer
292 * @dev: Device for the retimer
293 * @tb: Pointer to the domain the retimer belongs to
294 * @index: Retimer index facing the router USB4 port
295 * @vendor: Vendor ID of the retimer
296 * @device: Device ID of the retimer
297 * @port: Pointer to the lane 0 adapter
298 * @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
299 * @auth_status: Status of last NVM authentication
307 struct tb_port *port;
313 * struct tb_path_hop - routing information for a tb_path
314 * @in_port: Ingress port of a switch
315 * @out_port: Egress port of a switch where the packet is routed out
316 * (must be on the same switch than @in_port)
317 * @in_hop_index: HopID where the path configuration entry is placed in
318 * the path config space of @in_port.
319 * @in_counter_index: Used counter index (not used in the driver
320 * currently, %-1 to disable)
321 * @next_hop_index: HopID of the packet when it is routed out from @out_port
322 * @initial_credits: Number of initial flow control credits allocated for
324 * @nfc_credits: Number of non-flow controlled buffers allocated for the
327 * Hop configuration is always done on the IN port of a switch.
328 * in_port and out_port have to be on the same switch. Packets arriving on
329 * in_port with "hop" = in_hop_index will get routed to through out_port. The
330 * next hop to take (on out_port->remote) is determined by
331 * next_hop_index. When routing packet to another switch (out->remote is
332 * set) the @next_hop_index must match the @in_hop_index of that next
333 * hop to make routing possible.
335 * in_counter_index is the index of a counter (in TB_CFG_COUNTERS) on the in
339 struct tb_port *in_port;
340 struct tb_port *out_port;
342 int in_counter_index;
344 unsigned int initial_credits;
345 unsigned int nfc_credits;
349 * enum tb_path_port - path options mask
350 * @TB_PATH_NONE: Do not activate on any hop on path
351 * @TB_PATH_SOURCE: Activate on the first hop (out of src)
352 * @TB_PATH_INTERNAL: Activate on the intermediate hops (not the first/last)
353 * @TB_PATH_DESTINATION: Activate on the last hop (into dst)
354 * @TB_PATH_ALL: Activate on all hops on the path
359 TB_PATH_INTERNAL = 2,
360 TB_PATH_DESTINATION = 4,
365 * struct tb_path - a unidirectional path between two ports
366 * @tb: Pointer to the domain structure
367 * @name: Name of the path (used for debugging)
368 * @ingress_shared_buffer: Shared buffering used for ingress ports on the path
369 * @egress_shared_buffer: Shared buffering used for egress ports on the path
370 * @ingress_fc_enable: Flow control for ingress ports on the path
371 * @egress_fc_enable: Flow control for egress ports on the path
372 * @priority: Priority group if the path
373 * @weight: Weight of the path inside the priority group
374 * @drop_packages: Drop packages from queue tail or head
375 * @activated: Is the path active
376 * @clear_fc: Clear all flow control from the path config space entries
377 * when deactivating this path
379 * @path_length: How many hops the path uses
380 * @alloc_hopid: Does this path consume port HopID
382 * A path consists of a number of hops (see &struct tb_path_hop). To
383 * establish a PCIe tunnel two paths have to be created between the two
389 enum tb_path_port ingress_shared_buffer;
390 enum tb_path_port egress_shared_buffer;
391 enum tb_path_port ingress_fc_enable;
392 enum tb_path_port egress_fc_enable;
394 unsigned int priority:3;
399 struct tb_path_hop *hops;
404 /* HopIDs 0-7 are reserved by the Thunderbolt protocol */
405 #define TB_PATH_MIN_HOPID 8
407 * Support paths from the farthest (depth 6) router to the host and back
408 * to the same level (not necessarily to the same router).
410 #define TB_PATH_MAX_HOPS (7 * 2)
412 /* Possible wake types */
413 #define TB_WAKE_ON_CONNECT BIT(0)
414 #define TB_WAKE_ON_DISCONNECT BIT(1)
415 #define TB_WAKE_ON_USB4 BIT(2)
416 #define TB_WAKE_ON_USB3 BIT(3)
417 #define TB_WAKE_ON_PCIE BIT(4)
418 #define TB_WAKE_ON_DP BIT(5)
421 * struct tb_cm_ops - Connection manager specific operations vector
422 * @driver_ready: Called right after control channel is started. Used by
423 * ICM to send driver ready message to the firmware.
424 * @start: Starts the domain
425 * @stop: Stops the domain
426 * @suspend_noirq: Connection manager specific suspend_noirq
427 * @resume_noirq: Connection manager specific resume_noirq
428 * @suspend: Connection manager specific suspend
429 * @freeze_noirq: Connection manager specific freeze_noirq
430 * @thaw_noirq: Connection manager specific thaw_noirq
431 * @complete: Connection manager specific complete
432 * @runtime_suspend: Connection manager specific runtime_suspend
433 * @runtime_resume: Connection manager specific runtime_resume
434 * @runtime_suspend_switch: Runtime suspend a switch
435 * @runtime_resume_switch: Runtime resume a switch
436 * @handle_event: Handle thunderbolt event
437 * @get_boot_acl: Get boot ACL list
438 * @set_boot_acl: Set boot ACL list
439 * @disapprove_switch: Disapprove switch (disconnect PCIe tunnel)
440 * @approve_switch: Approve switch
441 * @add_switch_key: Add key to switch
442 * @challenge_switch_key: Challenge switch using key
443 * @disconnect_pcie_paths: Disconnects PCIe paths before NVM update
444 * @approve_xdomain_paths: Approve (establish) XDomain DMA paths
445 * @disconnect_xdomain_paths: Disconnect XDomain DMA paths
446 * @usb4_switch_op: Optional proxy for USB4 router operations. If set
447 * this will be called whenever USB4 router operation is
448 * performed. If this returns %-EOPNOTSUPP then the
449 * native USB4 router operation is called.
450 * @usb4_switch_nvm_authenticate_status: Optional callback that the CM
451 * implementation can be used to
452 * return status of USB4 NVM_AUTH
456 int (*driver_ready)(struct tb *tb);
457 int (*start)(struct tb *tb);
458 void (*stop)(struct tb *tb);
459 int (*suspend_noirq)(struct tb *tb);
460 int (*resume_noirq)(struct tb *tb);
461 int (*suspend)(struct tb *tb);
462 int (*freeze_noirq)(struct tb *tb);
463 int (*thaw_noirq)(struct tb *tb);
464 void (*complete)(struct tb *tb);
465 int (*runtime_suspend)(struct tb *tb);
466 int (*runtime_resume)(struct tb *tb);
467 int (*runtime_suspend_switch)(struct tb_switch *sw);
468 int (*runtime_resume_switch)(struct tb_switch *sw);
469 void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
470 const void *buf, size_t size);
471 int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
472 int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
473 int (*disapprove_switch)(struct tb *tb, struct tb_switch *sw);
474 int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
475 int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
476 int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
477 const u8 *challenge, u8 *response);
478 int (*disconnect_pcie_paths)(struct tb *tb);
479 int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
480 int transmit_path, int transmit_ring,
481 int receive_path, int receive_ring);
482 int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
483 int transmit_path, int transmit_ring,
484 int receive_path, int receive_ring);
485 int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
486 u8 *status, const void *tx_data, size_t tx_data_len,
487 void *rx_data, size_t rx_data_len);
488 int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw,
492 static inline void *tb_priv(struct tb *tb)
494 return (void *)tb->privdata;
497 #define TB_AUTOSUSPEND_DELAY 15000 /* ms */
499 /* helper functions & macros */
502 * tb_upstream_port() - return the upstream port of a switch
504 * Every switch has an upstream port (for the root switch it is the NHI).
506 * During switch alloc/init tb_upstream_port()->remote may be NULL, even for
507 * non root switches (on the NHI port remote is always NULL).
509 * Return: Returns the upstream port of the switch.
511 static inline struct tb_port *tb_upstream_port(struct tb_switch *sw)
513 return &sw->ports[sw->config.upstream_port_number];
517 * tb_is_upstream_port() - Is the port upstream facing
518 * @port: Port to check
520 * Returns true if @port is upstream facing port. In case of dual link
521 * ports both return true.
523 static inline bool tb_is_upstream_port(const struct tb_port *port)
525 const struct tb_port *upstream_port = tb_upstream_port(port->sw);
526 return port == upstream_port || port->dual_link_port == upstream_port;
529 static inline u64 tb_route(const struct tb_switch *sw)
531 return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
534 static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
538 port = route >> (sw->config.depth * 8);
539 if (WARN_ON(port > sw->config.max_port_number))
541 return &sw->ports[port];
545 * tb_port_has_remote() - Does the port have switch connected downstream
546 * @port: Port to check
548 * Returns true only when the port is primary port and has remote set.
550 static inline bool tb_port_has_remote(const struct tb_port *port)
552 if (tb_is_upstream_port(port))
556 if (port->dual_link_port && port->link_nr)
562 static inline bool tb_port_is_null(const struct tb_port *port)
564 return port && port->port && port->config.type == TB_TYPE_PORT;
567 static inline bool tb_port_is_nhi(const struct tb_port *port)
569 return port && port->config.type == TB_TYPE_NHI;
572 static inline bool tb_port_is_pcie_down(const struct tb_port *port)
574 return port && port->config.type == TB_TYPE_PCIE_DOWN;
577 static inline bool tb_port_is_pcie_up(const struct tb_port *port)
579 return port && port->config.type == TB_TYPE_PCIE_UP;
582 static inline bool tb_port_is_dpin(const struct tb_port *port)
584 return port && port->config.type == TB_TYPE_DP_HDMI_IN;
587 static inline bool tb_port_is_dpout(const struct tb_port *port)
589 return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
592 static inline bool tb_port_is_usb3_down(const struct tb_port *port)
594 return port && port->config.type == TB_TYPE_USB3_DOWN;
597 static inline bool tb_port_is_usb3_up(const struct tb_port *port)
599 return port && port->config.type == TB_TYPE_USB3_UP;
602 static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
603 enum tb_cfg_space space, u32 offset, u32 length)
605 if (sw->is_unplugged)
607 return tb_cfg_read(sw->tb->ctl,
616 static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
617 enum tb_cfg_space space, u32 offset, u32 length)
619 if (sw->is_unplugged)
621 return tb_cfg_write(sw->tb->ctl,
630 static inline int tb_port_read(struct tb_port *port, void *buffer,
631 enum tb_cfg_space space, u32 offset, u32 length)
633 if (port->sw->is_unplugged)
635 return tb_cfg_read(port->sw->tb->ctl,
644 static inline int tb_port_write(struct tb_port *port, const void *buffer,
645 enum tb_cfg_space space, u32 offset, u32 length)
647 if (port->sw->is_unplugged)
649 return tb_cfg_write(port->sw->tb->ctl,
658 #define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
659 #define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
660 #define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
661 #define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
662 #define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
664 #define __TB_SW_PRINT(level, sw, fmt, arg...) \
666 const struct tb_switch *__sw = (sw); \
667 level(__sw->tb, "%llx: " fmt, \
668 tb_route(__sw), ## arg); \
670 #define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
671 #define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ##arg)
672 #define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ##arg)
673 #define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ##arg)
675 #define __TB_PORT_PRINT(level, _port, fmt, arg...) \
677 const struct tb_port *__port = (_port); \
678 level(__port->sw->tb, "%llx:%u: " fmt, \
679 tb_route(__port->sw), __port->port, ## arg); \
681 #define tb_port_WARN(port, fmt, arg...) \
682 __TB_PORT_PRINT(tb_WARN, port, fmt, ##arg)
683 #define tb_port_warn(port, fmt, arg...) \
684 __TB_PORT_PRINT(tb_warn, port, fmt, ##arg)
685 #define tb_port_info(port, fmt, arg...) \
686 __TB_PORT_PRINT(tb_info, port, fmt, ##arg)
687 #define tb_port_dbg(port, fmt, arg...) \
688 __TB_PORT_PRINT(tb_dbg, port, fmt, ##arg)
690 struct tb *icm_probe(struct tb_nhi *nhi);
691 struct tb *tb_probe(struct tb_nhi *nhi);
693 extern struct device_type tb_domain_type;
694 extern struct device_type tb_retimer_type;
695 extern struct device_type tb_switch_type;
696 extern struct device_type usb4_port_device_type;
698 int tb_domain_init(void);
699 void tb_domain_exit(void);
700 int tb_xdomain_init(void);
701 void tb_xdomain_exit(void);
703 struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize);
704 int tb_domain_add(struct tb *tb);
705 void tb_domain_remove(struct tb *tb);
706 int tb_domain_suspend_noirq(struct tb *tb);
707 int tb_domain_resume_noirq(struct tb *tb);
708 int tb_domain_suspend(struct tb *tb);
709 int tb_domain_freeze_noirq(struct tb *tb);
710 int tb_domain_thaw_noirq(struct tb *tb);
711 void tb_domain_complete(struct tb *tb);
712 int tb_domain_runtime_suspend(struct tb *tb);
713 int tb_domain_runtime_resume(struct tb *tb);
714 int tb_domain_disapprove_switch(struct tb *tb, struct tb_switch *sw);
715 int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
716 int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
717 int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
718 int tb_domain_disconnect_pcie_paths(struct tb *tb);
719 int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
720 int transmit_path, int transmit_ring,
721 int receive_path, int receive_ring);
722 int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
723 int transmit_path, int transmit_ring,
724 int receive_path, int receive_ring);
725 int tb_domain_disconnect_all_paths(struct tb *tb);
727 static inline struct tb *tb_domain_get(struct tb *tb)
730 get_device(&tb->dev);
734 static inline void tb_domain_put(struct tb *tb)
736 put_device(&tb->dev);
739 struct tb_nvm *tb_nvm_alloc(struct device *dev);
740 int tb_nvm_add_active(struct tb_nvm *nvm, size_t size, nvmem_reg_read_t reg_read);
741 int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
743 int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size,
744 nvmem_reg_write_t reg_write);
745 void tb_nvm_free(struct tb_nvm *nvm);
746 void tb_nvm_exit(void);
748 typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
749 typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t);
751 int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
752 unsigned int retries, read_block_fn read_block,
753 void *read_block_data);
754 int tb_nvm_write_data(unsigned int address, const void *buf, size_t size,
755 unsigned int retries, write_block_fn write_next_block,
756 void *write_block_data);
758 struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
760 struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
761 struct device *parent, u64 route);
762 int tb_switch_configure(struct tb_switch *sw);
763 int tb_switch_add(struct tb_switch *sw);
764 void tb_switch_remove(struct tb_switch *sw);
765 void tb_switch_suspend(struct tb_switch *sw, bool runtime);
766 int tb_switch_resume(struct tb_switch *sw);
767 int tb_switch_reset(struct tb_switch *sw);
768 int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
769 u32 value, int timeout_msec);
770 void tb_sw_set_unplugged(struct tb_switch *sw);
771 struct tb_port *tb_switch_find_port(struct tb_switch *sw,
772 enum tb_port_type type);
773 struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
775 struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
776 struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
779 * tb_switch_for_each_port() - Iterate over each switch port
780 * @sw: Switch whose ports to iterate
781 * @p: Port used as iterator
783 * Iterates over each switch port skipping the control port (port %0).
785 #define tb_switch_for_each_port(sw, p) \
786 for ((p) = &(sw)->ports[1]; \
787 (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
789 static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
792 get_device(&sw->dev);
796 static inline void tb_switch_put(struct tb_switch *sw)
798 put_device(&sw->dev);
801 static inline bool tb_is_switch(const struct device *dev)
803 return dev->type == &tb_switch_type;
806 static inline struct tb_switch *tb_to_switch(struct device *dev)
808 if (tb_is_switch(dev))
809 return container_of(dev, struct tb_switch, dev);
813 static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
815 return tb_to_switch(sw->dev.parent);
818 static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
820 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
821 sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
824 static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
826 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
827 sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
830 static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
832 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
833 switch (sw->config.device_id) {
834 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
835 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
842 static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
844 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
845 switch (sw->config.device_id) {
846 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
847 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
854 static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
856 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
857 switch (sw->config.device_id) {
858 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
859 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
860 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
861 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
862 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
869 static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
871 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
872 switch (sw->config.device_id) {
873 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
874 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
875 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
882 static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
884 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
885 switch (sw->config.device_id) {
886 case PCI_DEVICE_ID_INTEL_TGL_NHI0:
887 case PCI_DEVICE_ID_INTEL_TGL_NHI1:
888 case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
889 case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
897 * tb_switch_is_usb4() - Is the switch USB4 compliant
898 * @sw: Switch to check
900 * Returns true if the @sw is USB4 compliant router, false otherwise.
902 static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
904 return sw->config.thunderbolt_version == USB4_VERSION_1_0;
908 * tb_switch_is_icm() - Is the switch handled by ICM firmware
909 * @sw: Switch to check
911 * In case there is a need to differentiate whether ICM firmware or SW CM
912 * is handling @sw this function can be called. It is valid to call this
913 * after tb_switch_alloc() and tb_switch_configure() has been called
914 * (latter only for SW CM case).
916 static inline bool tb_switch_is_icm(const struct tb_switch *sw)
918 return !sw->config.enabled;
921 int tb_switch_lane_bonding_enable(struct tb_switch *sw);
922 void tb_switch_lane_bonding_disable(struct tb_switch *sw);
923 int tb_switch_configure_link(struct tb_switch *sw);
924 void tb_switch_unconfigure_link(struct tb_switch *sw);
926 bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
927 int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
928 void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
930 int tb_switch_tmu_init(struct tb_switch *sw);
931 int tb_switch_tmu_post_time(struct tb_switch *sw);
932 int tb_switch_tmu_disable(struct tb_switch *sw);
933 int tb_switch_tmu_enable(struct tb_switch *sw);
934 void tb_switch_tmu_configure(struct tb_switch *sw,
935 enum tb_switch_tmu_rate rate,
936 bool unidirectional);
937 void tb_switch_enable_tmu_1st_child(struct tb_switch *sw,
938 enum tb_switch_tmu_rate rate);
940 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled
941 * @sw: Router whose TMU mode to check
942 * @unidirectional: If uni-directional (bi-directional otherwise)
944 * Return true if hardware TMU configuration matches the one passed in
945 * as parameter. That is HiFi/Normal and either uni-directional or bi-directional.
947 static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw,
950 return sw->tmu.rate == sw->tmu.rate_request &&
951 sw->tmu.unidirectional == unidirectional;
954 static inline const char *tb_switch_clx_name(enum tb_clx clx)
957 /* CL0s and CL1 are enabled and supported together */
965 int tb_switch_enable_clx(struct tb_switch *sw, enum tb_clx clx);
966 int tb_switch_disable_clx(struct tb_switch *sw, enum tb_clx clx);
969 * tb_switch_is_clx_enabled() - Checks if the CLx is enabled
970 * @sw: Router to check for the CLx
971 * @clx: The CLx state to check for
973 * Checks if the specified CLx is enabled on the router upstream link.
974 * Not applicable for a host router.
976 static inline bool tb_switch_is_clx_enabled(const struct tb_switch *sw,
979 return sw->clx == clx;
983 * tb_switch_is_clx_supported() - Is CLx supported on this type of router
984 * @sw: The router to check CLx support for
986 static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw)
988 return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
991 int tb_switch_mask_clx_objections(struct tb_switch *sw);
993 int tb_switch_pcie_l1_enable(struct tb_switch *sw);
995 int tb_switch_xhci_connect(struct tb_switch *sw);
996 void tb_switch_xhci_disconnect(struct tb_switch *sw);
998 int tb_port_state(struct tb_port *port);
999 int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
1000 int tb_port_add_nfc_credits(struct tb_port *port, int credits);
1001 int tb_port_clear_counter(struct tb_port *port, int counter);
1002 int tb_port_unlock(struct tb_port *port);
1003 int tb_port_enable(struct tb_port *port);
1004 int tb_port_disable(struct tb_port *port);
1005 int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
1006 void tb_port_release_in_hopid(struct tb_port *port, int hopid);
1007 int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
1008 void tb_port_release_out_hopid(struct tb_port *port, int hopid);
1009 struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
1010 struct tb_port *prev);
1012 static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
1014 return tb_port_is_null(port) && port->sw->credit_allocation;
1018 * tb_for_each_port_on_path() - Iterate over each port on path
1020 * @dst: Destination port
1021 * @p: Port used as iterator
1023 * Walks over each port on path from @src to @dst.
1025 #define tb_for_each_port_on_path(src, dst, p) \
1026 for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
1027 (p) = tb_next_port_on_path((src), (dst), (p)))
1029 int tb_port_get_link_speed(struct tb_port *port);
1030 int tb_port_get_link_width(struct tb_port *port);
1031 int tb_port_set_link_width(struct tb_port *port, unsigned int width);
1032 int tb_port_set_lane_bonding(struct tb_port *port, bool bonding);
1033 int tb_port_lane_bonding_enable(struct tb_port *port);
1034 void tb_port_lane_bonding_disable(struct tb_port *port);
1035 int tb_port_wait_for_link_width(struct tb_port *port, int width,
1037 int tb_port_update_credits(struct tb_port *port);
1039 int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
1040 int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
1041 int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
1042 int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
1043 int tb_port_next_cap(struct tb_port *port, unsigned int offset);
1044 bool tb_port_is_enabled(struct tb_port *port);
1046 bool tb_usb3_port_is_enabled(struct tb_port *port);
1047 int tb_usb3_port_enable(struct tb_port *port, bool enable);
1049 bool tb_pci_port_is_enabled(struct tb_port *port);
1050 int tb_pci_port_enable(struct tb_port *port, bool enable);
1052 int tb_dp_port_hpd_is_active(struct tb_port *port);
1053 int tb_dp_port_hpd_clear(struct tb_port *port);
1054 int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
1055 unsigned int aux_tx, unsigned int aux_rx);
1056 bool tb_dp_port_is_enabled(struct tb_port *port);
1057 int tb_dp_port_enable(struct tb_port *port, bool enable);
1059 struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
1060 struct tb_port *dst, int dst_hopid,
1061 struct tb_port **last, const char *name,
1063 struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
1064 struct tb_port *dst, int dst_hopid, int link_nr,
1066 void tb_path_free(struct tb_path *path);
1067 int tb_path_activate(struct tb_path *path);
1068 void tb_path_deactivate(struct tb_path *path);
1069 bool tb_path_is_invalid(struct tb_path *path);
1070 bool tb_path_port_on_path(const struct tb_path *path,
1071 const struct tb_port *port);
1074 * tb_path_for_each_hop() - Iterate over each hop on path
1075 * @path: Path whose hops to iterate
1076 * @hop: Hop used as iterator
1078 * Iterates over each hop on path.
1080 #define tb_path_for_each_hop(path, hop) \
1081 for ((hop) = &(path)->hops[0]; \
1082 (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
1084 int tb_drom_read(struct tb_switch *sw);
1085 int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
1087 int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
1088 int tb_lc_configure_port(struct tb_port *port);
1089 void tb_lc_unconfigure_port(struct tb_port *port);
1090 int tb_lc_configure_xdomain(struct tb_port *port);
1091 void tb_lc_unconfigure_xdomain(struct tb_port *port);
1092 int tb_lc_start_lane_initialization(struct tb_port *port);
1093 bool tb_lc_is_clx_supported(struct tb_port *port);
1094 bool tb_lc_is_usb_plugged(struct tb_port *port);
1095 bool tb_lc_is_xhci_connected(struct tb_port *port);
1096 int tb_lc_xhci_connect(struct tb_port *port);
1097 void tb_lc_xhci_disconnect(struct tb_port *port);
1098 int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
1099 int tb_lc_set_sleep(struct tb_switch *sw);
1100 bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
1101 bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
1102 int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
1103 int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
1104 int tb_lc_force_power(struct tb_switch *sw);
1106 static inline int tb_route_length(u64 route)
1108 return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT;
1112 * tb_downstream_route() - get route to downstream switch
1114 * Port must not be the upstream port (otherwise a loop is created).
1116 * Return: Returns a route to the switch behind @port.
1118 static inline u64 tb_downstream_route(struct tb_port *port)
1120 return tb_route(port->sw)
1121 | ((u64) port->port << (port->sw->config.depth * 8));
1124 bool tb_is_xdomain_enabled(void);
1125 bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
1126 const void *buf, size_t size);
1127 struct tb_xdomain *tb_xdomain_alloc(struct tb *tb, struct device *parent,
1128 u64 route, const uuid_t *local_uuid,
1129 const uuid_t *remote_uuid);
1130 void tb_xdomain_add(struct tb_xdomain *xd);
1131 void tb_xdomain_remove(struct tb_xdomain *xd);
1132 struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
1135 int tb_retimer_scan(struct tb_port *port, bool add);
1136 void tb_retimer_remove_all(struct tb_port *port);
1138 static inline bool tb_is_retimer(const struct device *dev)
1140 return dev->type == &tb_retimer_type;
1143 static inline struct tb_retimer *tb_to_retimer(struct device *dev)
1145 if (tb_is_retimer(dev))
1146 return container_of(dev, struct tb_retimer, dev);
1150 int usb4_switch_setup(struct tb_switch *sw);
1151 int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
1152 int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
1154 bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
1155 int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags);
1156 int usb4_switch_set_sleep(struct tb_switch *sw);
1157 int usb4_switch_nvm_sector_size(struct tb_switch *sw);
1158 int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
1160 int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsigned int address);
1161 int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
1162 const void *buf, size_t size);
1163 int usb4_switch_nvm_authenticate(struct tb_switch *sw);
1164 int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
1165 int usb4_switch_credits_init(struct tb_switch *sw);
1166 bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
1167 int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1168 int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1169 struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
1170 const struct tb_port *port);
1171 struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
1172 const struct tb_port *port);
1173 int usb4_switch_add_ports(struct tb_switch *sw);
1174 void usb4_switch_remove_ports(struct tb_switch *sw);
1176 int usb4_port_unlock(struct tb_port *port);
1177 int usb4_port_configure(struct tb_port *port);
1178 void usb4_port_unconfigure(struct tb_port *port);
1179 int usb4_port_configure_xdomain(struct tb_port *port);
1180 void usb4_port_unconfigure_xdomain(struct tb_port *port);
1181 int usb4_port_router_offline(struct tb_port *port);
1182 int usb4_port_router_online(struct tb_port *port);
1183 int usb4_port_enumerate_retimers(struct tb_port *port);
1184 bool usb4_port_clx_supported(struct tb_port *port);
1186 int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index);
1187 int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
1189 int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
1190 const void *buf, u8 size);
1191 int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
1192 int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
1193 int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
1194 unsigned int address);
1195 int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
1196 unsigned int address, const void *buf,
1198 int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
1199 int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
1201 int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
1202 unsigned int address, void *buf, size_t size);
1204 int usb4_usb3_port_max_link_rate(struct tb_port *port);
1205 int usb4_usb3_port_actual_link_rate(struct tb_port *port);
1206 int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
1207 int *downstream_bw);
1208 int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
1209 int *downstream_bw);
1210 int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
1211 int *downstream_bw);
1213 static inline bool tb_is_usb4_port_device(const struct device *dev)
1215 return dev->type == &usb4_port_device_type;
1218 static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
1220 if (tb_is_usb4_port_device(dev))
1221 return container_of(dev, struct usb4_port, dev);
1225 struct usb4_port *usb4_port_device_add(struct tb_port *port);
1226 void usb4_port_device_remove(struct usb4_port *usb4);
1227 int usb4_port_device_resume(struct usb4_port *usb4);
1229 /* Keep link controller awake during update */
1230 #define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
1232 void tb_check_quirks(struct tb_switch *sw);
1235 void tb_acpi_add_links(struct tb_nhi *nhi);
1237 bool tb_acpi_is_native(void);
1238 bool tb_acpi_may_tunnel_usb3(void);
1239 bool tb_acpi_may_tunnel_dp(void);
1240 bool tb_acpi_may_tunnel_pcie(void);
1241 bool tb_acpi_is_xdomain_allowed(void);
1243 int tb_acpi_init(void);
1244 void tb_acpi_exit(void);
1245 int tb_acpi_power_on_retimers(struct tb_port *port);
1246 int tb_acpi_power_off_retimers(struct tb_port *port);
1248 static inline void tb_acpi_add_links(struct tb_nhi *nhi) { }
1250 static inline bool tb_acpi_is_native(void) { return true; }
1251 static inline bool tb_acpi_may_tunnel_usb3(void) { return true; }
1252 static inline bool tb_acpi_may_tunnel_dp(void) { return true; }
1253 static inline bool tb_acpi_may_tunnel_pcie(void) { return true; }
1254 static inline bool tb_acpi_is_xdomain_allowed(void) { return true; }
1256 static inline int tb_acpi_init(void) { return 0; }
1257 static inline void tb_acpi_exit(void) { }
1258 static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0; }
1259 static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0; }
1262 #ifdef CONFIG_DEBUG_FS
1263 void tb_debugfs_init(void);
1264 void tb_debugfs_exit(void);
1265 void tb_switch_debugfs_init(struct tb_switch *sw);
1266 void tb_switch_debugfs_remove(struct tb_switch *sw);
1267 void tb_service_debugfs_init(struct tb_service *svc);
1268 void tb_service_debugfs_remove(struct tb_service *svc);
1270 static inline void tb_debugfs_init(void) { }
1271 static inline void tb_debugfs_exit(void) { }
1272 static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
1273 static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
1274 static inline void tb_service_debugfs_init(struct tb_service *svc) { }
1275 static inline void tb_service_debugfs_remove(struct tb_service *svc) { }