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_bandwidth_group - Bandwidth management group
233 * @tb: Pointer to the domain the group belongs to
234 * @index: Index of the group (aka Group_ID). Valid values %1-%7
235 * @ports: DP IN adapters belonging to this group are linked here
237 * Any tunnel that requires isochronous bandwidth (that's DP for now) is
238 * attached to a bandwidth group. All tunnels going through the same
239 * USB4 links share the same group and can dynamically distribute the
240 * bandwidth within the group.
242 struct tb_bandwidth_group {
245 struct list_head ports;
249 * struct tb_port - a thunderbolt port, part of a tb_switch
250 * @config: Cached port configuration read from registers
251 * @sw: Switch the port belongs to
252 * @remote: Remote port (%NULL if not connected)
253 * @xdomain: Remote host (%NULL if not connected)
254 * @cap_phy: Offset, zero if not found
255 * @cap_tmu: Offset of the adapter specific TMU capability (%0 if not present)
256 * @cap_adap: Offset of the adapter specific capability (%0 if not present)
257 * @cap_usb4: Offset to the USB4 port capability (%0 if not present)
258 * @usb4: Pointer to the USB4 port structure (only if @cap_usb4 is != %0)
259 * @port: Port number on switch
260 * @disabled: Disabled by eeprom or enabled but not implemented
261 * @bonded: true if the port is bonded (two lanes combined as one)
262 * @dual_link_port: If the switch is connected using two ports, points
264 * @link_nr: Is this primary or secondary port on the dual_link.
265 * @in_hopids: Currently allocated input HopIDs
266 * @out_hopids: Currently allocated output HopIDs
267 * @list: Used to link ports to DP resources list
268 * @total_credits: Total number of buffers available for this port
269 * @ctl_credits: Buffers reserved for control path
270 * @dma_credits: Number of credits allocated for DMA tunneling for all
271 * DMA paths through this port.
272 * @group: Bandwidth allocation group the adapter is assigned to. Only
273 * used for DP IN adapters for now.
274 * @group_list: The adapter is linked to the group's list of ports through this
275 * @max_bw: Maximum possible bandwidth through this adapter if set to
278 * In USB4 terminology this structure represents an adapter (protocol or
282 struct tb_regs_port_header config;
283 struct tb_switch *sw;
284 struct tb_port *remote;
285 struct tb_xdomain *xdomain;
290 struct usb4_port *usb4;
294 struct tb_port *dual_link_port;
296 struct ida in_hopids;
297 struct ida out_hopids;
298 struct list_head list;
299 unsigned int total_credits;
300 unsigned int ctl_credits;
301 unsigned int dma_credits;
302 struct tb_bandwidth_group *group;
303 struct list_head group_list;
308 * struct usb4_port - USB4 port device
309 * @dev: Device for the port
310 * @port: Pointer to the lane 0 adapter
311 * @can_offline: Does the port have necessary platform support to moved
312 * it into offline mode and back
313 * @offline: The port is currently in offline mode
314 * @margining: Pointer to margining structure if enabled
318 struct tb_port *port;
321 #ifdef CONFIG_USB4_DEBUGFS_MARGINING
322 struct tb_margining *margining;
327 * tb_retimer: Thunderbolt retimer
328 * @dev: Device for the retimer
329 * @tb: Pointer to the domain the retimer belongs to
330 * @index: Retimer index facing the router USB4 port
331 * @vendor: Vendor ID of the retimer
332 * @device: Device ID of the retimer
333 * @port: Pointer to the lane 0 adapter
334 * @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
335 * @no_nvm_upgrade: Prevent NVM upgrade of this retimer
336 * @auth_status: Status of last NVM authentication
344 struct tb_port *port;
351 * struct tb_path_hop - routing information for a tb_path
352 * @in_port: Ingress port of a switch
353 * @out_port: Egress port of a switch where the packet is routed out
354 * (must be on the same switch than @in_port)
355 * @in_hop_index: HopID where the path configuration entry is placed in
356 * the path config space of @in_port.
357 * @in_counter_index: Used counter index (not used in the driver
358 * currently, %-1 to disable)
359 * @next_hop_index: HopID of the packet when it is routed out from @out_port
360 * @initial_credits: Number of initial flow control credits allocated for
362 * @nfc_credits: Number of non-flow controlled buffers allocated for the
365 * Hop configuration is always done on the IN port of a switch.
366 * in_port and out_port have to be on the same switch. Packets arriving on
367 * in_port with "hop" = in_hop_index will get routed to through out_port. The
368 * next hop to take (on out_port->remote) is determined by
369 * next_hop_index. When routing packet to another switch (out->remote is
370 * set) the @next_hop_index must match the @in_hop_index of that next
371 * hop to make routing possible.
373 * in_counter_index is the index of a counter (in TB_CFG_COUNTERS) on the in
377 struct tb_port *in_port;
378 struct tb_port *out_port;
380 int in_counter_index;
382 unsigned int initial_credits;
383 unsigned int nfc_credits;
387 * enum tb_path_port - path options mask
388 * @TB_PATH_NONE: Do not activate on any hop on path
389 * @TB_PATH_SOURCE: Activate on the first hop (out of src)
390 * @TB_PATH_INTERNAL: Activate on the intermediate hops (not the first/last)
391 * @TB_PATH_DESTINATION: Activate on the last hop (into dst)
392 * @TB_PATH_ALL: Activate on all hops on the path
397 TB_PATH_INTERNAL = 2,
398 TB_PATH_DESTINATION = 4,
403 * struct tb_path - a unidirectional path between two ports
404 * @tb: Pointer to the domain structure
405 * @name: Name of the path (used for debugging)
406 * @ingress_shared_buffer: Shared buffering used for ingress ports on the path
407 * @egress_shared_buffer: Shared buffering used for egress ports on the path
408 * @ingress_fc_enable: Flow control for ingress ports on the path
409 * @egress_fc_enable: Flow control for egress ports on the path
410 * @priority: Priority group if the path
411 * @weight: Weight of the path inside the priority group
412 * @drop_packages: Drop packages from queue tail or head
413 * @activated: Is the path active
414 * @clear_fc: Clear all flow control from the path config space entries
415 * when deactivating this path
417 * @path_length: How many hops the path uses
418 * @alloc_hopid: Does this path consume port HopID
420 * A path consists of a number of hops (see &struct tb_path_hop). To
421 * establish a PCIe tunnel two paths have to be created between the two
427 enum tb_path_port ingress_shared_buffer;
428 enum tb_path_port egress_shared_buffer;
429 enum tb_path_port ingress_fc_enable;
430 enum tb_path_port egress_fc_enable;
432 unsigned int priority:3;
437 struct tb_path_hop *hops;
442 /* HopIDs 0-7 are reserved by the Thunderbolt protocol */
443 #define TB_PATH_MIN_HOPID 8
445 * Support paths from the farthest (depth 6) router to the host and back
446 * to the same level (not necessarily to the same router).
448 #define TB_PATH_MAX_HOPS (7 * 2)
450 /* Possible wake types */
451 #define TB_WAKE_ON_CONNECT BIT(0)
452 #define TB_WAKE_ON_DISCONNECT BIT(1)
453 #define TB_WAKE_ON_USB4 BIT(2)
454 #define TB_WAKE_ON_USB3 BIT(3)
455 #define TB_WAKE_ON_PCIE BIT(4)
456 #define TB_WAKE_ON_DP BIT(5)
459 * struct tb_cm_ops - Connection manager specific operations vector
460 * @driver_ready: Called right after control channel is started. Used by
461 * ICM to send driver ready message to the firmware.
462 * @start: Starts the domain
463 * @stop: Stops the domain
464 * @suspend_noirq: Connection manager specific suspend_noirq
465 * @resume_noirq: Connection manager specific resume_noirq
466 * @suspend: Connection manager specific suspend
467 * @freeze_noirq: Connection manager specific freeze_noirq
468 * @thaw_noirq: Connection manager specific thaw_noirq
469 * @complete: Connection manager specific complete
470 * @runtime_suspend: Connection manager specific runtime_suspend
471 * @runtime_resume: Connection manager specific runtime_resume
472 * @runtime_suspend_switch: Runtime suspend a switch
473 * @runtime_resume_switch: Runtime resume a switch
474 * @handle_event: Handle thunderbolt event
475 * @get_boot_acl: Get boot ACL list
476 * @set_boot_acl: Set boot ACL list
477 * @disapprove_switch: Disapprove switch (disconnect PCIe tunnel)
478 * @approve_switch: Approve switch
479 * @add_switch_key: Add key to switch
480 * @challenge_switch_key: Challenge switch using key
481 * @disconnect_pcie_paths: Disconnects PCIe paths before NVM update
482 * @approve_xdomain_paths: Approve (establish) XDomain DMA paths
483 * @disconnect_xdomain_paths: Disconnect XDomain DMA paths
484 * @usb4_switch_op: Optional proxy for USB4 router operations. If set
485 * this will be called whenever USB4 router operation is
486 * performed. If this returns %-EOPNOTSUPP then the
487 * native USB4 router operation is called.
488 * @usb4_switch_nvm_authenticate_status: Optional callback that the CM
489 * implementation can be used to
490 * return status of USB4 NVM_AUTH
494 int (*driver_ready)(struct tb *tb);
495 int (*start)(struct tb *tb);
496 void (*stop)(struct tb *tb);
497 int (*suspend_noirq)(struct tb *tb);
498 int (*resume_noirq)(struct tb *tb);
499 int (*suspend)(struct tb *tb);
500 int (*freeze_noirq)(struct tb *tb);
501 int (*thaw_noirq)(struct tb *tb);
502 void (*complete)(struct tb *tb);
503 int (*runtime_suspend)(struct tb *tb);
504 int (*runtime_resume)(struct tb *tb);
505 int (*runtime_suspend_switch)(struct tb_switch *sw);
506 int (*runtime_resume_switch)(struct tb_switch *sw);
507 void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
508 const void *buf, size_t size);
509 int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
510 int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
511 int (*disapprove_switch)(struct tb *tb, struct tb_switch *sw);
512 int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
513 int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
514 int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
515 const u8 *challenge, u8 *response);
516 int (*disconnect_pcie_paths)(struct tb *tb);
517 int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
518 int transmit_path, int transmit_ring,
519 int receive_path, int receive_ring);
520 int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
521 int transmit_path, int transmit_ring,
522 int receive_path, int receive_ring);
523 int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
524 u8 *status, const void *tx_data, size_t tx_data_len,
525 void *rx_data, size_t rx_data_len);
526 int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw,
530 static inline void *tb_priv(struct tb *tb)
532 return (void *)tb->privdata;
535 #define TB_AUTOSUSPEND_DELAY 15000 /* ms */
537 /* helper functions & macros */
540 * tb_upstream_port() - return the upstream port of a switch
542 * Every switch has an upstream port (for the root switch it is the NHI).
544 * During switch alloc/init tb_upstream_port()->remote may be NULL, even for
545 * non root switches (on the NHI port remote is always NULL).
547 * Return: Returns the upstream port of the switch.
549 static inline struct tb_port *tb_upstream_port(struct tb_switch *sw)
551 return &sw->ports[sw->config.upstream_port_number];
555 * tb_is_upstream_port() - Is the port upstream facing
556 * @port: Port to check
558 * Returns true if @port is upstream facing port. In case of dual link
559 * ports both return true.
561 static inline bool tb_is_upstream_port(const struct tb_port *port)
563 const struct tb_port *upstream_port = tb_upstream_port(port->sw);
564 return port == upstream_port || port->dual_link_port == upstream_port;
567 static inline u64 tb_route(const struct tb_switch *sw)
569 return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
572 static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
576 port = route >> (sw->config.depth * 8);
577 if (WARN_ON(port > sw->config.max_port_number))
579 return &sw->ports[port];
583 * tb_port_has_remote() - Does the port have switch connected downstream
584 * @port: Port to check
586 * Returns true only when the port is primary port and has remote set.
588 static inline bool tb_port_has_remote(const struct tb_port *port)
590 if (tb_is_upstream_port(port))
594 if (port->dual_link_port && port->link_nr)
600 static inline bool tb_port_is_null(const struct tb_port *port)
602 return port && port->port && port->config.type == TB_TYPE_PORT;
605 static inline bool tb_port_is_nhi(const struct tb_port *port)
607 return port && port->config.type == TB_TYPE_NHI;
610 static inline bool tb_port_is_pcie_down(const struct tb_port *port)
612 return port && port->config.type == TB_TYPE_PCIE_DOWN;
615 static inline bool tb_port_is_pcie_up(const struct tb_port *port)
617 return port && port->config.type == TB_TYPE_PCIE_UP;
620 static inline bool tb_port_is_dpin(const struct tb_port *port)
622 return port && port->config.type == TB_TYPE_DP_HDMI_IN;
625 static inline bool tb_port_is_dpout(const struct tb_port *port)
627 return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
630 static inline bool tb_port_is_usb3_down(const struct tb_port *port)
632 return port && port->config.type == TB_TYPE_USB3_DOWN;
635 static inline bool tb_port_is_usb3_up(const struct tb_port *port)
637 return port && port->config.type == TB_TYPE_USB3_UP;
640 static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
641 enum tb_cfg_space space, u32 offset, u32 length)
643 if (sw->is_unplugged)
645 return tb_cfg_read(sw->tb->ctl,
654 static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
655 enum tb_cfg_space space, u32 offset, u32 length)
657 if (sw->is_unplugged)
659 return tb_cfg_write(sw->tb->ctl,
668 static inline int tb_port_read(struct tb_port *port, void *buffer,
669 enum tb_cfg_space space, u32 offset, u32 length)
671 if (port->sw->is_unplugged)
673 return tb_cfg_read(port->sw->tb->ctl,
682 static inline int tb_port_write(struct tb_port *port, const void *buffer,
683 enum tb_cfg_space space, u32 offset, u32 length)
685 if (port->sw->is_unplugged)
687 return tb_cfg_write(port->sw->tb->ctl,
696 #define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
697 #define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
698 #define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
699 #define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
700 #define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
702 #define __TB_SW_PRINT(level, sw, fmt, arg...) \
704 const struct tb_switch *__sw = (sw); \
705 level(__sw->tb, "%llx: " fmt, \
706 tb_route(__sw), ## arg); \
708 #define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
709 #define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ##arg)
710 #define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ##arg)
711 #define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ##arg)
713 #define __TB_PORT_PRINT(level, _port, fmt, arg...) \
715 const struct tb_port *__port = (_port); \
716 level(__port->sw->tb, "%llx:%u: " fmt, \
717 tb_route(__port->sw), __port->port, ## arg); \
719 #define tb_port_WARN(port, fmt, arg...) \
720 __TB_PORT_PRINT(tb_WARN, port, fmt, ##arg)
721 #define tb_port_warn(port, fmt, arg...) \
722 __TB_PORT_PRINT(tb_warn, port, fmt, ##arg)
723 #define tb_port_info(port, fmt, arg...) \
724 __TB_PORT_PRINT(tb_info, port, fmt, ##arg)
725 #define tb_port_dbg(port, fmt, arg...) \
726 __TB_PORT_PRINT(tb_dbg, port, fmt, ##arg)
728 struct tb *icm_probe(struct tb_nhi *nhi);
729 struct tb *tb_probe(struct tb_nhi *nhi);
731 extern struct device_type tb_domain_type;
732 extern struct device_type tb_retimer_type;
733 extern struct device_type tb_switch_type;
734 extern struct device_type usb4_port_device_type;
736 int tb_domain_init(void);
737 void tb_domain_exit(void);
738 int tb_xdomain_init(void);
739 void tb_xdomain_exit(void);
741 struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize);
742 int tb_domain_add(struct tb *tb);
743 void tb_domain_remove(struct tb *tb);
744 int tb_domain_suspend_noirq(struct tb *tb);
745 int tb_domain_resume_noirq(struct tb *tb);
746 int tb_domain_suspend(struct tb *tb);
747 int tb_domain_freeze_noirq(struct tb *tb);
748 int tb_domain_thaw_noirq(struct tb *tb);
749 void tb_domain_complete(struct tb *tb);
750 int tb_domain_runtime_suspend(struct tb *tb);
751 int tb_domain_runtime_resume(struct tb *tb);
752 int tb_domain_disapprove_switch(struct tb *tb, struct tb_switch *sw);
753 int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
754 int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
755 int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
756 int tb_domain_disconnect_pcie_paths(struct tb *tb);
757 int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
758 int transmit_path, int transmit_ring,
759 int receive_path, int receive_ring);
760 int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
761 int transmit_path, int transmit_ring,
762 int receive_path, int receive_ring);
763 int tb_domain_disconnect_all_paths(struct tb *tb);
765 static inline struct tb *tb_domain_get(struct tb *tb)
768 get_device(&tb->dev);
772 static inline void tb_domain_put(struct tb *tb)
774 put_device(&tb->dev);
777 struct tb_nvm *tb_nvm_alloc(struct device *dev);
778 int tb_nvm_read_version(struct tb_nvm *nvm);
779 int tb_nvm_validate(struct tb_nvm *nvm);
780 int tb_nvm_write_headers(struct tb_nvm *nvm);
781 int tb_nvm_add_active(struct tb_nvm *nvm, nvmem_reg_read_t reg_read);
782 int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
784 int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write);
785 void tb_nvm_free(struct tb_nvm *nvm);
786 void tb_nvm_exit(void);
788 typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
789 typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t);
791 int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
792 unsigned int retries, read_block_fn read_block,
793 void *read_block_data);
794 int tb_nvm_write_data(unsigned int address, const void *buf, size_t size,
795 unsigned int retries, write_block_fn write_next_block,
796 void *write_block_data);
798 int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
800 struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
802 struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
803 struct device *parent, u64 route);
804 int tb_switch_configure(struct tb_switch *sw);
805 int tb_switch_add(struct tb_switch *sw);
806 void tb_switch_remove(struct tb_switch *sw);
807 void tb_switch_suspend(struct tb_switch *sw, bool runtime);
808 int tb_switch_resume(struct tb_switch *sw);
809 int tb_switch_reset(struct tb_switch *sw);
810 int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
811 u32 value, int timeout_msec);
812 void tb_sw_set_unplugged(struct tb_switch *sw);
813 struct tb_port *tb_switch_find_port(struct tb_switch *sw,
814 enum tb_port_type type);
815 struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
817 struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
818 struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
821 * tb_switch_for_each_port() - Iterate over each switch port
822 * @sw: Switch whose ports to iterate
823 * @p: Port used as iterator
825 * Iterates over each switch port skipping the control port (port %0).
827 #define tb_switch_for_each_port(sw, p) \
828 for ((p) = &(sw)->ports[1]; \
829 (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
831 static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
834 get_device(&sw->dev);
838 static inline void tb_switch_put(struct tb_switch *sw)
840 put_device(&sw->dev);
843 static inline bool tb_is_switch(const struct device *dev)
845 return dev->type == &tb_switch_type;
848 static inline struct tb_switch *tb_to_switch(const struct device *dev)
850 if (tb_is_switch(dev))
851 return container_of(dev, struct tb_switch, dev);
855 static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
857 return tb_to_switch(sw->dev.parent);
860 static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
862 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
863 sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
866 static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
868 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
869 sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
872 static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
874 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
875 switch (sw->config.device_id) {
876 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
877 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
884 static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
886 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
887 switch (sw->config.device_id) {
888 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
889 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
896 static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
898 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
899 switch (sw->config.device_id) {
900 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
901 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
902 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
903 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
904 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
911 static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
913 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
914 switch (sw->config.device_id) {
915 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
916 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
917 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
924 static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
926 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
927 switch (sw->config.device_id) {
928 case PCI_DEVICE_ID_INTEL_TGL_NHI0:
929 case PCI_DEVICE_ID_INTEL_TGL_NHI1:
930 case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
931 case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
939 * tb_switch_is_usb4() - Is the switch USB4 compliant
940 * @sw: Switch to check
942 * Returns true if the @sw is USB4 compliant router, false otherwise.
944 static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
946 return sw->config.thunderbolt_version == USB4_VERSION_1_0;
950 * tb_switch_is_icm() - Is the switch handled by ICM firmware
951 * @sw: Switch to check
953 * In case there is a need to differentiate whether ICM firmware or SW CM
954 * is handling @sw this function can be called. It is valid to call this
955 * after tb_switch_alloc() and tb_switch_configure() has been called
956 * (latter only for SW CM case).
958 static inline bool tb_switch_is_icm(const struct tb_switch *sw)
960 return !sw->config.enabled;
963 int tb_switch_lane_bonding_enable(struct tb_switch *sw);
964 void tb_switch_lane_bonding_disable(struct tb_switch *sw);
965 int tb_switch_configure_link(struct tb_switch *sw);
966 void tb_switch_unconfigure_link(struct tb_switch *sw);
968 bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
969 int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
970 void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
972 int tb_switch_tmu_init(struct tb_switch *sw);
973 int tb_switch_tmu_post_time(struct tb_switch *sw);
974 int tb_switch_tmu_disable(struct tb_switch *sw);
975 int tb_switch_tmu_enable(struct tb_switch *sw);
976 void tb_switch_tmu_configure(struct tb_switch *sw,
977 enum tb_switch_tmu_rate rate,
978 bool unidirectional);
979 void tb_switch_enable_tmu_1st_child(struct tb_switch *sw,
980 enum tb_switch_tmu_rate rate);
982 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled
983 * @sw: Router whose TMU mode to check
984 * @unidirectional: If uni-directional (bi-directional otherwise)
986 * Return true if hardware TMU configuration matches the one passed in
987 * as parameter. That is HiFi/Normal and either uni-directional or bi-directional.
989 static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw,
992 return sw->tmu.rate == sw->tmu.rate_request &&
993 sw->tmu.unidirectional == unidirectional;
996 static inline const char *tb_switch_clx_name(enum tb_clx clx)
999 /* CL0s and CL1 are enabled and supported together */
1007 int tb_switch_enable_clx(struct tb_switch *sw, enum tb_clx clx);
1008 int tb_switch_disable_clx(struct tb_switch *sw, enum tb_clx clx);
1011 * tb_switch_is_clx_enabled() - Checks if the CLx is enabled
1012 * @sw: Router to check for the CLx
1013 * @clx: The CLx state to check for
1015 * Checks if the specified CLx is enabled on the router upstream link.
1016 * Not applicable for a host router.
1018 static inline bool tb_switch_is_clx_enabled(const struct tb_switch *sw,
1021 return sw->clx == clx;
1025 * tb_switch_is_clx_supported() - Is CLx supported on this type of router
1026 * @sw: The router to check CLx support for
1028 static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw)
1030 if (sw->quirks & QUIRK_NO_CLX)
1033 return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
1036 int tb_switch_mask_clx_objections(struct tb_switch *sw);
1038 int tb_switch_pcie_l1_enable(struct tb_switch *sw);
1040 int tb_switch_xhci_connect(struct tb_switch *sw);
1041 void tb_switch_xhci_disconnect(struct tb_switch *sw);
1043 int tb_port_state(struct tb_port *port);
1044 int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
1045 int tb_port_add_nfc_credits(struct tb_port *port, int credits);
1046 int tb_port_clear_counter(struct tb_port *port, int counter);
1047 int tb_port_unlock(struct tb_port *port);
1048 int tb_port_enable(struct tb_port *port);
1049 int tb_port_disable(struct tb_port *port);
1050 int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
1051 void tb_port_release_in_hopid(struct tb_port *port, int hopid);
1052 int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
1053 void tb_port_release_out_hopid(struct tb_port *port, int hopid);
1054 struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
1055 struct tb_port *prev);
1057 static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
1059 return tb_port_is_null(port) && port->sw->credit_allocation;
1063 * tb_for_each_port_on_path() - Iterate over each port on path
1065 * @dst: Destination port
1066 * @p: Port used as iterator
1068 * Walks over each port on path from @src to @dst.
1070 #define tb_for_each_port_on_path(src, dst, p) \
1071 for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
1072 (p) = tb_next_port_on_path((src), (dst), (p)))
1074 int tb_port_get_link_speed(struct tb_port *port);
1075 int tb_port_get_link_width(struct tb_port *port);
1076 int tb_port_set_link_width(struct tb_port *port, unsigned int width);
1077 int tb_port_set_lane_bonding(struct tb_port *port, bool bonding);
1078 int tb_port_lane_bonding_enable(struct tb_port *port);
1079 void tb_port_lane_bonding_disable(struct tb_port *port);
1080 int tb_port_wait_for_link_width(struct tb_port *port, int width,
1082 int tb_port_update_credits(struct tb_port *port);
1083 bool tb_port_is_clx_enabled(struct tb_port *port, unsigned int clx);
1085 int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
1086 int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
1087 int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
1088 int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
1089 int tb_port_next_cap(struct tb_port *port, unsigned int offset);
1090 bool tb_port_is_enabled(struct tb_port *port);
1092 bool tb_usb3_port_is_enabled(struct tb_port *port);
1093 int tb_usb3_port_enable(struct tb_port *port, bool enable);
1095 bool tb_pci_port_is_enabled(struct tb_port *port);
1096 int tb_pci_port_enable(struct tb_port *port, bool enable);
1098 int tb_dp_port_hpd_is_active(struct tb_port *port);
1099 int tb_dp_port_hpd_clear(struct tb_port *port);
1100 int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
1101 unsigned int aux_tx, unsigned int aux_rx);
1102 bool tb_dp_port_is_enabled(struct tb_port *port);
1103 int tb_dp_port_enable(struct tb_port *port, bool enable);
1105 struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
1106 struct tb_port *dst, int dst_hopid,
1107 struct tb_port **last, const char *name,
1109 struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
1110 struct tb_port *dst, int dst_hopid, int link_nr,
1112 void tb_path_free(struct tb_path *path);
1113 int tb_path_activate(struct tb_path *path);
1114 void tb_path_deactivate(struct tb_path *path);
1115 bool tb_path_is_invalid(struct tb_path *path);
1116 bool tb_path_port_on_path(const struct tb_path *path,
1117 const struct tb_port *port);
1120 * tb_path_for_each_hop() - Iterate over each hop on path
1121 * @path: Path whose hops to iterate
1122 * @hop: Hop used as iterator
1124 * Iterates over each hop on path.
1126 #define tb_path_for_each_hop(path, hop) \
1127 for ((hop) = &(path)->hops[0]; \
1128 (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
1130 int tb_drom_read(struct tb_switch *sw);
1131 int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
1133 int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
1134 int tb_lc_configure_port(struct tb_port *port);
1135 void tb_lc_unconfigure_port(struct tb_port *port);
1136 int tb_lc_configure_xdomain(struct tb_port *port);
1137 void tb_lc_unconfigure_xdomain(struct tb_port *port);
1138 int tb_lc_start_lane_initialization(struct tb_port *port);
1139 bool tb_lc_is_clx_supported(struct tb_port *port);
1140 bool tb_lc_is_usb_plugged(struct tb_port *port);
1141 bool tb_lc_is_xhci_connected(struct tb_port *port);
1142 int tb_lc_xhci_connect(struct tb_port *port);
1143 void tb_lc_xhci_disconnect(struct tb_port *port);
1144 int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
1145 int tb_lc_set_sleep(struct tb_switch *sw);
1146 bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
1147 bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
1148 int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
1149 int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
1150 int tb_lc_force_power(struct tb_switch *sw);
1152 static inline int tb_route_length(u64 route)
1154 return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT;
1158 * tb_downstream_route() - get route to downstream switch
1160 * Port must not be the upstream port (otherwise a loop is created).
1162 * Return: Returns a route to the switch behind @port.
1164 static inline u64 tb_downstream_route(struct tb_port *port)
1166 return tb_route(port->sw)
1167 | ((u64) port->port << (port->sw->config.depth * 8));
1170 bool tb_is_xdomain_enabled(void);
1171 bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
1172 const void *buf, size_t size);
1173 struct tb_xdomain *tb_xdomain_alloc(struct tb *tb, struct device *parent,
1174 u64 route, const uuid_t *local_uuid,
1175 const uuid_t *remote_uuid);
1176 void tb_xdomain_add(struct tb_xdomain *xd);
1177 void tb_xdomain_remove(struct tb_xdomain *xd);
1178 struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
1181 static inline struct tb_switch *tb_xdomain_parent(struct tb_xdomain *xd)
1183 return tb_to_switch(xd->dev.parent);
1186 int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf,
1188 int tb_retimer_scan(struct tb_port *port, bool add);
1189 void tb_retimer_remove_all(struct tb_port *port);
1191 static inline bool tb_is_retimer(const struct device *dev)
1193 return dev->type == &tb_retimer_type;
1196 static inline struct tb_retimer *tb_to_retimer(struct device *dev)
1198 if (tb_is_retimer(dev))
1199 return container_of(dev, struct tb_retimer, dev);
1203 int usb4_switch_setup(struct tb_switch *sw);
1204 int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
1205 int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
1207 bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
1208 int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags);
1209 int usb4_switch_set_sleep(struct tb_switch *sw);
1210 int usb4_switch_nvm_sector_size(struct tb_switch *sw);
1211 int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
1213 int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsigned int address);
1214 int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
1215 const void *buf, size_t size);
1216 int usb4_switch_nvm_authenticate(struct tb_switch *sw);
1217 int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
1218 int usb4_switch_credits_init(struct tb_switch *sw);
1219 bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
1220 int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1221 int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1222 struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
1223 const struct tb_port *port);
1224 struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
1225 const struct tb_port *port);
1226 int usb4_switch_add_ports(struct tb_switch *sw);
1227 void usb4_switch_remove_ports(struct tb_switch *sw);
1229 int usb4_port_unlock(struct tb_port *port);
1230 int usb4_port_hotplug_enable(struct tb_port *port);
1231 int usb4_port_configure(struct tb_port *port);
1232 void usb4_port_unconfigure(struct tb_port *port);
1233 int usb4_port_configure_xdomain(struct tb_port *port, struct tb_xdomain *xd);
1234 void usb4_port_unconfigure_xdomain(struct tb_port *port);
1235 int usb4_port_router_offline(struct tb_port *port);
1236 int usb4_port_router_online(struct tb_port *port);
1237 int usb4_port_enumerate_retimers(struct tb_port *port);
1238 bool usb4_port_clx_supported(struct tb_port *port);
1239 int usb4_port_margining_caps(struct tb_port *port, u32 *caps);
1240 int usb4_port_hw_margin(struct tb_port *port, unsigned int lanes,
1241 unsigned int ber_level, bool timing, bool right_high,
1243 int usb4_port_sw_margin(struct tb_port *port, unsigned int lanes, bool timing,
1244 bool right_high, u32 counter);
1245 int usb4_port_sw_margin_errors(struct tb_port *port, u32 *errors);
1247 int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index);
1248 int usb4_port_retimer_unset_inbound_sbtx(struct tb_port *port, u8 index);
1249 int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
1251 int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
1252 const void *buf, u8 size);
1253 int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
1254 int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
1255 int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
1256 unsigned int address);
1257 int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
1258 unsigned int address, const void *buf,
1260 int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
1261 int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
1263 int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
1264 unsigned int address, void *buf, size_t size);
1266 int usb4_usb3_port_max_link_rate(struct tb_port *port);
1267 int usb4_usb3_port_actual_link_rate(struct tb_port *port);
1268 int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
1269 int *downstream_bw);
1270 int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
1271 int *downstream_bw);
1272 int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
1273 int *downstream_bw);
1275 int usb4_dp_port_set_cm_id(struct tb_port *port, int cm_id);
1276 bool usb4_dp_port_bw_mode_supported(struct tb_port *port);
1277 bool usb4_dp_port_bw_mode_enabled(struct tb_port *port);
1278 int usb4_dp_port_set_cm_bw_mode_supported(struct tb_port *port, bool supported);
1279 int usb4_dp_port_group_id(struct tb_port *port);
1280 int usb4_dp_port_set_group_id(struct tb_port *port, int group_id);
1281 int usb4_dp_port_nrd(struct tb_port *port, int *rate, int *lanes);
1282 int usb4_dp_port_set_nrd(struct tb_port *port, int rate, int lanes);
1283 int usb4_dp_port_granularity(struct tb_port *port);
1284 int usb4_dp_port_set_granularity(struct tb_port *port, int granularity);
1285 int usb4_dp_port_set_estimated_bw(struct tb_port *port, int bw);
1286 int usb4_dp_port_allocated_bw(struct tb_port *port);
1287 int usb4_dp_port_allocate_bw(struct tb_port *port, int bw);
1288 int usb4_dp_port_requested_bw(struct tb_port *port);
1290 static inline bool tb_is_usb4_port_device(const struct device *dev)
1292 return dev->type == &usb4_port_device_type;
1295 static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
1297 if (tb_is_usb4_port_device(dev))
1298 return container_of(dev, struct usb4_port, dev);
1302 struct usb4_port *usb4_port_device_add(struct tb_port *port);
1303 void usb4_port_device_remove(struct usb4_port *usb4);
1304 int usb4_port_device_resume(struct usb4_port *usb4);
1306 void tb_check_quirks(struct tb_switch *sw);
1309 void tb_acpi_add_links(struct tb_nhi *nhi);
1311 bool tb_acpi_is_native(void);
1312 bool tb_acpi_may_tunnel_usb3(void);
1313 bool tb_acpi_may_tunnel_dp(void);
1314 bool tb_acpi_may_tunnel_pcie(void);
1315 bool tb_acpi_is_xdomain_allowed(void);
1317 int tb_acpi_init(void);
1318 void tb_acpi_exit(void);
1319 int tb_acpi_power_on_retimers(struct tb_port *port);
1320 int tb_acpi_power_off_retimers(struct tb_port *port);
1322 static inline void tb_acpi_add_links(struct tb_nhi *nhi) { }
1324 static inline bool tb_acpi_is_native(void) { return true; }
1325 static inline bool tb_acpi_may_tunnel_usb3(void) { return true; }
1326 static inline bool tb_acpi_may_tunnel_dp(void) { return true; }
1327 static inline bool tb_acpi_may_tunnel_pcie(void) { return true; }
1328 static inline bool tb_acpi_is_xdomain_allowed(void) { return true; }
1330 static inline int tb_acpi_init(void) { return 0; }
1331 static inline void tb_acpi_exit(void) { }
1332 static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0; }
1333 static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0; }
1336 #ifdef CONFIG_DEBUG_FS
1337 void tb_debugfs_init(void);
1338 void tb_debugfs_exit(void);
1339 void tb_switch_debugfs_init(struct tb_switch *sw);
1340 void tb_switch_debugfs_remove(struct tb_switch *sw);
1341 void tb_xdomain_debugfs_init(struct tb_xdomain *xd);
1342 void tb_xdomain_debugfs_remove(struct tb_xdomain *xd);
1343 void tb_service_debugfs_init(struct tb_service *svc);
1344 void tb_service_debugfs_remove(struct tb_service *svc);
1346 static inline void tb_debugfs_init(void) { }
1347 static inline void tb_debugfs_exit(void) { }
1348 static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
1349 static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
1350 static inline void tb_xdomain_debugfs_init(struct tb_xdomain *xd) { }
1351 static inline void tb_xdomain_debugfs_remove(struct tb_xdomain *xd) { }
1352 static inline void tb_service_debugfs_init(struct tb_service *svc) { }
1353 static inline void tb_service_debugfs_remove(struct tb_service *svc) { }