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 /* Keep link controller awake during update */
23 #define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
24 /* Disable CLx if not supported */
25 #define QUIRK_NO_CLX BIT(1)
28 * struct tb_nvm - Structure holding NVM information
29 * @dev: Owner of the NVM
30 * @major: Major version number of the active NVM portion
31 * @minor: Minor version number of the active NVM portion
32 * @id: Identifier used with both NVM portions
33 * @active: Active portion NVMem device
34 * @active_size: Size in bytes of the active NVM
35 * @non_active: Non-active portion NVMem device
36 * @buf: Buffer where the NVM image is stored before it is written to
37 * the actual NVM flash device
38 * @buf_data_start: Where the actual image starts after skipping
40 * @buf_data_size: Number of bytes actually consumed by the new NVM
42 * @authenticating: The device is authenticating the new NVM
43 * @flushed: The image has been flushed to the storage area
44 * @vops: Router vendor specific NVM operations (optional)
46 * The user of this structure needs to handle serialization of possible
54 struct nvmem_device *active;
56 struct nvmem_device *non_active;
62 const struct tb_nvm_vendor_ops *vops;
65 enum tb_nvm_write_ops {
66 WRITE_AND_AUTHENTICATE = 1,
68 AUTHENTICATE_ONLY = 3,
71 #define TB_SWITCH_KEY_SIZE 32
72 #define TB_SWITCH_MAX_DEPTH 6
73 #define USB4_SWITCH_MAX_DEPTH 5
76 * enum tb_switch_tmu_mode - TMU mode
77 * @TB_SWITCH_TMU_MODE_OFF: TMU is off
78 * @TB_SWITCH_TMU_MODE_LOWRES: Uni-directional, normal mode
79 * @TB_SWITCH_TMU_MODE_HIFI_UNI: Uni-directional, HiFi mode
80 * @TB_SWITCH_TMU_MODE_HIFI_BI: Bi-directional, HiFi mode
81 * @TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI: Enhanced Uni-directional, MedRes mode
83 * Ordering is based on TMU accuracy level (highest last).
85 enum tb_switch_tmu_mode {
86 TB_SWITCH_TMU_MODE_OFF,
87 TB_SWITCH_TMU_MODE_LOWRES,
88 TB_SWITCH_TMU_MODE_HIFI_UNI,
89 TB_SWITCH_TMU_MODE_HIFI_BI,
90 TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI,
94 * struct tb_switch_tmu - Structure holding router TMU configuration
95 * @cap: Offset to the TMU capability (%0 if not found)
96 * @has_ucap: Does the switch support uni-directional mode
97 * @mode: TMU mode related to the upstream router. Reflects the HW
98 * setting. Don't care for host router.
99 * @mode_request: TMU mode requested to set. Related to upstream router.
100 * Don't care for host router.
102 struct tb_switch_tmu {
105 enum tb_switch_tmu_mode mode;
106 enum tb_switch_tmu_mode mode_request;
110 * struct tb_switch - a thunderbolt switch
111 * @dev: Device for the switch
112 * @config: Switch configuration
113 * @ports: Ports in this switch
114 * @dma_port: If the switch has port supporting DMA configuration based
115 * mailbox this will hold the pointer to that (%NULL
116 * otherwise). If set it also means the switch has
118 * @tmu: The switch TMU configuration
119 * @tb: Pointer to the domain the switch belongs to
120 * @uid: Unique ID of the switch
121 * @uuid: UUID of the switch (or %NULL if not supported)
122 * @vendor: Vendor ID of the switch
123 * @device: Device ID of the switch
124 * @vendor_name: Name of the vendor (or %NULL if not known)
125 * @device_name: Name of the device (or %NULL if not known)
126 * @link_speed: Speed of the link in Gb/s
127 * @link_width: Width of the upstream facing link
128 * @preferred_link_width: Router preferred link width (only set for Gen 4 links)
129 * @link_usb4: Upstream link is USB4
130 * @generation: Switch Thunderbolt generation
131 * @cap_plug_events: Offset to the plug events capability (%0 if not found)
132 * @cap_vsec_tmu: Offset to the TMU vendor specific capability (%0 if not found)
133 * @cap_lc: Offset to the link controller capability (%0 if not found)
134 * @cap_lp: Offset to the low power (CLx for TBT) capability (%0 if not found)
135 * @is_unplugged: The switch is going away
136 * @drom: DROM of the switch (%NULL if not found)
137 * @nvm: Pointer to the NVM if the switch has one (%NULL otherwise)
138 * @no_nvm_upgrade: Prevent NVM upgrade of this switch
139 * @safe_mode: The switch is in safe-mode
140 * @boot: Whether the switch was already authorized on boot or not
141 * @rpm: The switch supports runtime PM
142 * @authorized: Whether the switch is authorized by user or policy
143 * @security_level: Switch supported security level
144 * @debugfs_dir: Pointer to the debugfs structure
145 * @key: Contains the key used to challenge the device or %NULL if not
146 * supported. Size of the key is %TB_SWITCH_KEY_SIZE.
147 * @connection_id: Connection ID used with ICM messaging
148 * @connection_key: Connection key used with ICM messaging
149 * @link: Root switch link this switch is connected (ICM only)
150 * @depth: Depth in the chain this switch is connected (ICM only)
151 * @rpm_complete: Completion used to wait for runtime resume to
152 * complete (ICM only)
153 * @quirks: Quirks used for this Thunderbolt switch
154 * @credit_allocation: Are the below buffer allocation parameters valid
155 * @max_usb3_credits: Router preferred number of buffers for USB 3.x
156 * @min_dp_aux_credits: Router preferred minimum number of buffers for DP AUX
157 * @min_dp_main_credits: Router preferred minimum number of buffers for DP MAIN
158 * @max_pcie_credits: Router preferred number of buffers for PCIe
159 * @max_dma_credits: Router preferred number of buffers for DMA/P2P
160 * @clx: CLx states on the upstream link of the router
162 * When the switch is being added or removed to the domain (other
163 * switches) you need to have domain lock held.
165 * In USB4 terminology this structure represents a router.
169 struct tb_regs_switch_header config;
170 struct tb_port *ports;
171 struct tb_dma_port *dma_port;
172 struct tb_switch_tmu tmu;
178 const char *vendor_name;
179 const char *device_name;
180 unsigned int link_speed;
181 enum tb_link_width link_width;
182 enum tb_link_width preferred_link_width;
184 unsigned int generation;
196 unsigned int authorized;
197 enum tb_security_level security_level;
198 struct dentry *debugfs_dir;
204 struct completion rpm_complete;
205 unsigned long quirks;
206 bool credit_allocation;
207 unsigned int max_usb3_credits;
208 unsigned int min_dp_aux_credits;
209 unsigned int min_dp_main_credits;
210 unsigned int max_pcie_credits;
211 unsigned int max_dma_credits;
216 * struct tb_bandwidth_group - Bandwidth management group
217 * @tb: Pointer to the domain the group belongs to
218 * @index: Index of the group (aka Group_ID). Valid values %1-%7
219 * @ports: DP IN adapters belonging to this group are linked here
221 * Any tunnel that requires isochronous bandwidth (that's DP for now) is
222 * attached to a bandwidth group. All tunnels going through the same
223 * USB4 links share the same group and can dynamically distribute the
224 * bandwidth within the group.
226 struct tb_bandwidth_group {
229 struct list_head ports;
233 * struct tb_port - a thunderbolt port, part of a tb_switch
234 * @config: Cached port configuration read from registers
235 * @sw: Switch the port belongs to
236 * @remote: Remote port (%NULL if not connected)
237 * @xdomain: Remote host (%NULL if not connected)
238 * @cap_phy: Offset, zero if not found
239 * @cap_tmu: Offset of the adapter specific TMU capability (%0 if not present)
240 * @cap_adap: Offset of the adapter specific capability (%0 if not present)
241 * @cap_usb4: Offset to the USB4 port capability (%0 if not present)
242 * @usb4: Pointer to the USB4 port structure (only if @cap_usb4 is != %0)
243 * @port: Port number on switch
244 * @disabled: Disabled by eeprom or enabled but not implemented
245 * @bonded: true if the port is bonded (two lanes combined as one)
246 * @dual_link_port: If the switch is connected using two ports, points
248 * @link_nr: Is this primary or secondary port on the dual_link.
249 * @in_hopids: Currently allocated input HopIDs
250 * @out_hopids: Currently allocated output HopIDs
251 * @list: Used to link ports to DP resources list
252 * @total_credits: Total number of buffers available for this port
253 * @ctl_credits: Buffers reserved for control path
254 * @dma_credits: Number of credits allocated for DMA tunneling for all
255 * DMA paths through this port.
256 * @group: Bandwidth allocation group the adapter is assigned to. Only
257 * used for DP IN adapters for now.
258 * @group_list: The adapter is linked to the group's list of ports through this
259 * @max_bw: Maximum possible bandwidth through this adapter if set to
262 * In USB4 terminology this structure represents an adapter (protocol or
266 struct tb_regs_port_header config;
267 struct tb_switch *sw;
268 struct tb_port *remote;
269 struct tb_xdomain *xdomain;
274 struct usb4_port *usb4;
278 struct tb_port *dual_link_port;
280 struct ida in_hopids;
281 struct ida out_hopids;
282 struct list_head list;
283 unsigned int total_credits;
284 unsigned int ctl_credits;
285 unsigned int dma_credits;
286 struct tb_bandwidth_group *group;
287 struct list_head group_list;
292 * struct usb4_port - USB4 port device
293 * @dev: Device for the port
294 * @port: Pointer to the lane 0 adapter
295 * @can_offline: Does the port have necessary platform support to moved
296 * it into offline mode and back
297 * @offline: The port is currently in offline mode
298 * @margining: Pointer to margining structure if enabled
302 struct tb_port *port;
305 #ifdef CONFIG_USB4_DEBUGFS_MARGINING
306 struct tb_margining *margining;
311 * tb_retimer: Thunderbolt retimer
312 * @dev: Device for the retimer
313 * @tb: Pointer to the domain the retimer belongs to
314 * @index: Retimer index facing the router USB4 port
315 * @vendor: Vendor ID of the retimer
316 * @device: Device ID of the retimer
317 * @port: Pointer to the lane 0 adapter
318 * @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
319 * @no_nvm_upgrade: Prevent NVM upgrade of this retimer
320 * @auth_status: Status of last NVM authentication
328 struct tb_port *port;
335 * struct tb_path_hop - routing information for a tb_path
336 * @in_port: Ingress port of a switch
337 * @out_port: Egress port of a switch where the packet is routed out
338 * (must be on the same switch than @in_port)
339 * @in_hop_index: HopID where the path configuration entry is placed in
340 * the path config space of @in_port.
341 * @in_counter_index: Used counter index (not used in the driver
342 * currently, %-1 to disable)
343 * @next_hop_index: HopID of the packet when it is routed out from @out_port
344 * @initial_credits: Number of initial flow control credits allocated for
346 * @nfc_credits: Number of non-flow controlled buffers allocated for the
348 * @pm_support: Set path PM packet support bit to 1 (for USB4 v2 routers)
350 * Hop configuration is always done on the IN port of a switch.
351 * in_port and out_port have to be on the same switch. Packets arriving on
352 * in_port with "hop" = in_hop_index will get routed to through out_port. The
353 * next hop to take (on out_port->remote) is determined by
354 * next_hop_index. When routing packet to another switch (out->remote is
355 * set) the @next_hop_index must match the @in_hop_index of that next
356 * hop to make routing possible.
358 * in_counter_index is the index of a counter (in TB_CFG_COUNTERS) on the in
362 struct tb_port *in_port;
363 struct tb_port *out_port;
365 int in_counter_index;
367 unsigned int initial_credits;
368 unsigned int nfc_credits;
373 * enum tb_path_port - path options mask
374 * @TB_PATH_NONE: Do not activate on any hop on path
375 * @TB_PATH_SOURCE: Activate on the first hop (out of src)
376 * @TB_PATH_INTERNAL: Activate on the intermediate hops (not the first/last)
377 * @TB_PATH_DESTINATION: Activate on the last hop (into dst)
378 * @TB_PATH_ALL: Activate on all hops on the path
383 TB_PATH_INTERNAL = 2,
384 TB_PATH_DESTINATION = 4,
389 * struct tb_path - a unidirectional path between two ports
390 * @tb: Pointer to the domain structure
391 * @name: Name of the path (used for debugging)
392 * @ingress_shared_buffer: Shared buffering used for ingress ports on the path
393 * @egress_shared_buffer: Shared buffering used for egress ports on the path
394 * @ingress_fc_enable: Flow control for ingress ports on the path
395 * @egress_fc_enable: Flow control for egress ports on the path
396 * @priority: Priority group if the path
397 * @weight: Weight of the path inside the priority group
398 * @drop_packages: Drop packages from queue tail or head
399 * @activated: Is the path active
400 * @clear_fc: Clear all flow control from the path config space entries
401 * when deactivating this path
403 * @path_length: How many hops the path uses
404 * @alloc_hopid: Does this path consume port HopID
406 * A path consists of a number of hops (see &struct tb_path_hop). To
407 * establish a PCIe tunnel two paths have to be created between the two
413 enum tb_path_port ingress_shared_buffer;
414 enum tb_path_port egress_shared_buffer;
415 enum tb_path_port ingress_fc_enable;
416 enum tb_path_port egress_fc_enable;
418 unsigned int priority:3;
423 struct tb_path_hop *hops;
428 /* HopIDs 0-7 are reserved by the Thunderbolt protocol */
429 #define TB_PATH_MIN_HOPID 8
431 * Support paths from the farthest (depth 6) router to the host and back
432 * to the same level (not necessarily to the same router).
434 #define TB_PATH_MAX_HOPS (7 * 2)
436 /* Possible wake types */
437 #define TB_WAKE_ON_CONNECT BIT(0)
438 #define TB_WAKE_ON_DISCONNECT BIT(1)
439 #define TB_WAKE_ON_USB4 BIT(2)
440 #define TB_WAKE_ON_USB3 BIT(3)
441 #define TB_WAKE_ON_PCIE BIT(4)
442 #define TB_WAKE_ON_DP BIT(5)
445 #define TB_CL0S BIT(0)
446 #define TB_CL1 BIT(1)
447 #define TB_CL2 BIT(2)
450 * struct tb_cm_ops - Connection manager specific operations vector
451 * @driver_ready: Called right after control channel is started. Used by
452 * ICM to send driver ready message to the firmware.
453 * @start: Starts the domain
454 * @stop: Stops the domain
455 * @suspend_noirq: Connection manager specific suspend_noirq
456 * @resume_noirq: Connection manager specific resume_noirq
457 * @suspend: Connection manager specific suspend
458 * @freeze_noirq: Connection manager specific freeze_noirq
459 * @thaw_noirq: Connection manager specific thaw_noirq
460 * @complete: Connection manager specific complete
461 * @runtime_suspend: Connection manager specific runtime_suspend
462 * @runtime_resume: Connection manager specific runtime_resume
463 * @runtime_suspend_switch: Runtime suspend a switch
464 * @runtime_resume_switch: Runtime resume a switch
465 * @handle_event: Handle thunderbolt event
466 * @get_boot_acl: Get boot ACL list
467 * @set_boot_acl: Set boot ACL list
468 * @disapprove_switch: Disapprove switch (disconnect PCIe tunnel)
469 * @approve_switch: Approve switch
470 * @add_switch_key: Add key to switch
471 * @challenge_switch_key: Challenge switch using key
472 * @disconnect_pcie_paths: Disconnects PCIe paths before NVM update
473 * @approve_xdomain_paths: Approve (establish) XDomain DMA paths
474 * @disconnect_xdomain_paths: Disconnect XDomain DMA paths
475 * @usb4_switch_op: Optional proxy for USB4 router operations. If set
476 * this will be called whenever USB4 router operation is
477 * performed. If this returns %-EOPNOTSUPP then the
478 * native USB4 router operation is called.
479 * @usb4_switch_nvm_authenticate_status: Optional callback that the CM
480 * implementation can be used to
481 * return status of USB4 NVM_AUTH
485 int (*driver_ready)(struct tb *tb);
486 int (*start)(struct tb *tb);
487 void (*stop)(struct tb *tb);
488 int (*suspend_noirq)(struct tb *tb);
489 int (*resume_noirq)(struct tb *tb);
490 int (*suspend)(struct tb *tb);
491 int (*freeze_noirq)(struct tb *tb);
492 int (*thaw_noirq)(struct tb *tb);
493 void (*complete)(struct tb *tb);
494 int (*runtime_suspend)(struct tb *tb);
495 int (*runtime_resume)(struct tb *tb);
496 int (*runtime_suspend_switch)(struct tb_switch *sw);
497 int (*runtime_resume_switch)(struct tb_switch *sw);
498 void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
499 const void *buf, size_t size);
500 int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
501 int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
502 int (*disapprove_switch)(struct tb *tb, struct tb_switch *sw);
503 int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
504 int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
505 int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
506 const u8 *challenge, u8 *response);
507 int (*disconnect_pcie_paths)(struct tb *tb);
508 int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
509 int transmit_path, int transmit_ring,
510 int receive_path, int receive_ring);
511 int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
512 int transmit_path, int transmit_ring,
513 int receive_path, int receive_ring);
514 int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
515 u8 *status, const void *tx_data, size_t tx_data_len,
516 void *rx_data, size_t rx_data_len);
517 int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw,
521 static inline void *tb_priv(struct tb *tb)
523 return (void *)tb->privdata;
526 #define TB_AUTOSUSPEND_DELAY 15000 /* ms */
528 /* helper functions & macros */
531 * tb_upstream_port() - return the upstream port of a switch
533 * Every switch has an upstream port (for the root switch it is the NHI).
535 * During switch alloc/init tb_upstream_port()->remote may be NULL, even for
536 * non root switches (on the NHI port remote is always NULL).
538 * Return: Returns the upstream port of the switch.
540 static inline struct tb_port *tb_upstream_port(struct tb_switch *sw)
542 return &sw->ports[sw->config.upstream_port_number];
546 * tb_is_upstream_port() - Is the port upstream facing
547 * @port: Port to check
549 * Returns true if @port is upstream facing port. In case of dual link
550 * ports both return true.
552 static inline bool tb_is_upstream_port(const struct tb_port *port)
554 const struct tb_port *upstream_port = tb_upstream_port(port->sw);
555 return port == upstream_port || port->dual_link_port == upstream_port;
558 static inline u64 tb_route(const struct tb_switch *sw)
560 return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
563 static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
567 port = route >> (sw->config.depth * 8);
568 if (WARN_ON(port > sw->config.max_port_number))
570 return &sw->ports[port];
573 static inline const char *tb_width_name(enum tb_link_width width)
576 case TB_LINK_WIDTH_SINGLE:
577 return "symmetric, single lane";
578 case TB_LINK_WIDTH_DUAL:
579 return "symmetric, dual lanes";
580 case TB_LINK_WIDTH_ASYM_TX:
581 return "asymmetric, 3 transmitters, 1 receiver";
582 case TB_LINK_WIDTH_ASYM_RX:
583 return "asymmetric, 3 receivers, 1 transmitter";
590 * tb_port_has_remote() - Does the port have switch connected downstream
591 * @port: Port to check
593 * Returns true only when the port is primary port and has remote set.
595 static inline bool tb_port_has_remote(const struct tb_port *port)
597 if (tb_is_upstream_port(port))
601 if (port->dual_link_port && port->link_nr)
607 static inline bool tb_port_is_null(const struct tb_port *port)
609 return port && port->port && port->config.type == TB_TYPE_PORT;
612 static inline bool tb_port_is_nhi(const struct tb_port *port)
614 return port && port->config.type == TB_TYPE_NHI;
617 static inline bool tb_port_is_pcie_down(const struct tb_port *port)
619 return port && port->config.type == TB_TYPE_PCIE_DOWN;
622 static inline bool tb_port_is_pcie_up(const struct tb_port *port)
624 return port && port->config.type == TB_TYPE_PCIE_UP;
627 static inline bool tb_port_is_dpin(const struct tb_port *port)
629 return port && port->config.type == TB_TYPE_DP_HDMI_IN;
632 static inline bool tb_port_is_dpout(const struct tb_port *port)
634 return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
637 static inline bool tb_port_is_usb3_down(const struct tb_port *port)
639 return port && port->config.type == TB_TYPE_USB3_DOWN;
642 static inline bool tb_port_is_usb3_up(const struct tb_port *port)
644 return port && port->config.type == TB_TYPE_USB3_UP;
647 static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
648 enum tb_cfg_space space, u32 offset, u32 length)
650 if (sw->is_unplugged)
652 return tb_cfg_read(sw->tb->ctl,
661 static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
662 enum tb_cfg_space space, u32 offset, u32 length)
664 if (sw->is_unplugged)
666 return tb_cfg_write(sw->tb->ctl,
675 static inline int tb_port_read(struct tb_port *port, void *buffer,
676 enum tb_cfg_space space, u32 offset, u32 length)
678 if (port->sw->is_unplugged)
680 return tb_cfg_read(port->sw->tb->ctl,
689 static inline int tb_port_write(struct tb_port *port, const void *buffer,
690 enum tb_cfg_space space, u32 offset, u32 length)
692 if (port->sw->is_unplugged)
694 return tb_cfg_write(port->sw->tb->ctl,
703 #define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
704 #define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
705 #define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
706 #define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
707 #define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
709 #define __TB_SW_PRINT(level, sw, fmt, arg...) \
711 const struct tb_switch *__sw = (sw); \
712 level(__sw->tb, "%llx: " fmt, \
713 tb_route(__sw), ## arg); \
715 #define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
716 #define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ##arg)
717 #define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ##arg)
718 #define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ##arg)
720 #define __TB_PORT_PRINT(level, _port, fmt, arg...) \
722 const struct tb_port *__port = (_port); \
723 level(__port->sw->tb, "%llx:%u: " fmt, \
724 tb_route(__port->sw), __port->port, ## arg); \
726 #define tb_port_WARN(port, fmt, arg...) \
727 __TB_PORT_PRINT(tb_WARN, port, fmt, ##arg)
728 #define tb_port_warn(port, fmt, arg...) \
729 __TB_PORT_PRINT(tb_warn, port, fmt, ##arg)
730 #define tb_port_info(port, fmt, arg...) \
731 __TB_PORT_PRINT(tb_info, port, fmt, ##arg)
732 #define tb_port_dbg(port, fmt, arg...) \
733 __TB_PORT_PRINT(tb_dbg, port, fmt, ##arg)
735 struct tb *icm_probe(struct tb_nhi *nhi);
736 struct tb *tb_probe(struct tb_nhi *nhi);
738 extern struct device_type tb_domain_type;
739 extern struct device_type tb_retimer_type;
740 extern struct device_type tb_switch_type;
741 extern struct device_type usb4_port_device_type;
743 int tb_domain_init(void);
744 void tb_domain_exit(void);
745 int tb_xdomain_init(void);
746 void tb_xdomain_exit(void);
748 struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize);
749 int tb_domain_add(struct tb *tb);
750 void tb_domain_remove(struct tb *tb);
751 int tb_domain_suspend_noirq(struct tb *tb);
752 int tb_domain_resume_noirq(struct tb *tb);
753 int tb_domain_suspend(struct tb *tb);
754 int tb_domain_freeze_noirq(struct tb *tb);
755 int tb_domain_thaw_noirq(struct tb *tb);
756 void tb_domain_complete(struct tb *tb);
757 int tb_domain_runtime_suspend(struct tb *tb);
758 int tb_domain_runtime_resume(struct tb *tb);
759 int tb_domain_disapprove_switch(struct tb *tb, struct tb_switch *sw);
760 int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
761 int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
762 int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
763 int tb_domain_disconnect_pcie_paths(struct tb *tb);
764 int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
765 int transmit_path, int transmit_ring,
766 int receive_path, int receive_ring);
767 int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
768 int transmit_path, int transmit_ring,
769 int receive_path, int receive_ring);
770 int tb_domain_disconnect_all_paths(struct tb *tb);
772 static inline struct tb *tb_domain_get(struct tb *tb)
775 get_device(&tb->dev);
779 static inline void tb_domain_put(struct tb *tb)
781 put_device(&tb->dev);
784 struct tb_nvm *tb_nvm_alloc(struct device *dev);
785 int tb_nvm_read_version(struct tb_nvm *nvm);
786 int tb_nvm_validate(struct tb_nvm *nvm);
787 int tb_nvm_write_headers(struct tb_nvm *nvm);
788 int tb_nvm_add_active(struct tb_nvm *nvm, nvmem_reg_read_t reg_read);
789 int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
791 int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write);
792 void tb_nvm_free(struct tb_nvm *nvm);
793 void tb_nvm_exit(void);
795 typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
796 typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t);
798 int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
799 unsigned int retries, read_block_fn read_block,
800 void *read_block_data);
801 int tb_nvm_write_data(unsigned int address, const void *buf, size_t size,
802 unsigned int retries, write_block_fn write_next_block,
803 void *write_block_data);
805 int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
807 struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
809 struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
810 struct device *parent, u64 route);
811 int tb_switch_configure(struct tb_switch *sw);
812 int tb_switch_configuration_valid(struct tb_switch *sw);
813 int tb_switch_add(struct tb_switch *sw);
814 void tb_switch_remove(struct tb_switch *sw);
815 void tb_switch_suspend(struct tb_switch *sw, bool runtime);
816 int tb_switch_resume(struct tb_switch *sw);
817 int tb_switch_reset(struct tb_switch *sw);
818 int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
819 u32 value, int timeout_msec);
820 void tb_sw_set_unplugged(struct tb_switch *sw);
821 struct tb_port *tb_switch_find_port(struct tb_switch *sw,
822 enum tb_port_type type);
823 struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
825 struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
826 struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
829 * tb_switch_for_each_port() - Iterate over each switch port
830 * @sw: Switch whose ports to iterate
831 * @p: Port used as iterator
833 * Iterates over each switch port skipping the control port (port %0).
835 #define tb_switch_for_each_port(sw, p) \
836 for ((p) = &(sw)->ports[1]; \
837 (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
839 static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
842 get_device(&sw->dev);
846 static inline void tb_switch_put(struct tb_switch *sw)
848 put_device(&sw->dev);
851 static inline bool tb_is_switch(const struct device *dev)
853 return dev->type == &tb_switch_type;
856 static inline struct tb_switch *tb_to_switch(const struct device *dev)
858 if (tb_is_switch(dev))
859 return container_of(dev, struct tb_switch, dev);
863 static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
865 return tb_to_switch(sw->dev.parent);
869 * tb_switch_downstream_port() - Return downstream facing port of parent router
870 * @sw: Device router pointer
872 * Only call for device routers. Returns the downstream facing port of
875 static inline struct tb_port *tb_switch_downstream_port(struct tb_switch *sw)
877 if (WARN_ON(!tb_route(sw)))
879 return tb_port_at(tb_route(sw), tb_switch_parent(sw));
883 * tb_switch_depth() - Returns depth of the connected router
886 static inline int tb_switch_depth(const struct tb_switch *sw)
888 return sw->config.depth;
891 static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
893 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
894 sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
897 static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
899 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
900 sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
903 static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
905 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
906 switch (sw->config.device_id) {
907 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
908 case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
915 static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
917 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
918 switch (sw->config.device_id) {
919 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
920 case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
927 static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
929 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
930 switch (sw->config.device_id) {
931 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
932 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
933 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
934 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
935 case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
942 static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
944 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
945 switch (sw->config.device_id) {
946 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
947 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
948 case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
955 static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
957 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
958 switch (sw->config.device_id) {
959 case PCI_DEVICE_ID_INTEL_TGL_NHI0:
960 case PCI_DEVICE_ID_INTEL_TGL_NHI1:
961 case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
962 case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
970 * tb_switch_is_icm() - Is the switch handled by ICM firmware
971 * @sw: Switch to check
973 * In case there is a need to differentiate whether ICM firmware or SW CM
974 * is handling @sw this function can be called. It is valid to call this
975 * after tb_switch_alloc() and tb_switch_configure() has been called
976 * (latter only for SW CM case).
978 static inline bool tb_switch_is_icm(const struct tb_switch *sw)
980 return !sw->config.enabled;
983 int tb_switch_set_link_width(struct tb_switch *sw, enum tb_link_width width);
984 int tb_switch_configure_link(struct tb_switch *sw);
985 void tb_switch_unconfigure_link(struct tb_switch *sw);
987 bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
988 int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
989 void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
991 int tb_switch_tmu_init(struct tb_switch *sw);
992 int tb_switch_tmu_post_time(struct tb_switch *sw);
993 int tb_switch_tmu_disable(struct tb_switch *sw);
994 int tb_switch_tmu_enable(struct tb_switch *sw);
995 int tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_mode mode);
998 * tb_switch_tmu_is_configured() - Is given TMU mode configured
999 * @sw: Router whose mode to check
1000 * @mode: Mode to check
1002 * Checks if given router TMU mode is configured to @mode. Note the
1003 * router TMU might not be enabled to this mode.
1005 static inline bool tb_switch_tmu_is_configured(const struct tb_switch *sw,
1006 enum tb_switch_tmu_mode mode)
1008 return sw->tmu.mode_request == mode;
1012 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled
1013 * @sw: Router whose TMU mode to check
1015 * Return true if hardware TMU configuration matches the requested
1016 * configuration (and is not %TB_SWITCH_TMU_MODE_OFF).
1018 static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw)
1020 return sw->tmu.mode != TB_SWITCH_TMU_MODE_OFF &&
1021 sw->tmu.mode == sw->tmu.mode_request;
1024 bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx);
1026 int tb_switch_clx_init(struct tb_switch *sw);
1027 int tb_switch_clx_enable(struct tb_switch *sw, unsigned int clx);
1028 int tb_switch_clx_disable(struct tb_switch *sw);
1031 * tb_switch_clx_is_enabled() - Checks if the CLx is enabled
1032 * @sw: Router to check for the CLx
1033 * @clx: The CLx states to check for
1035 * Checks if the specified CLx is enabled on the router upstream link.
1036 * Returns true if any of the given states is enabled.
1038 * Not applicable for a host router.
1040 static inline bool tb_switch_clx_is_enabled(const struct tb_switch *sw,
1043 return sw->clx & clx;
1046 int tb_switch_pcie_l1_enable(struct tb_switch *sw);
1048 int tb_switch_xhci_connect(struct tb_switch *sw);
1049 void tb_switch_xhci_disconnect(struct tb_switch *sw);
1051 int tb_port_state(struct tb_port *port);
1052 int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
1053 int tb_port_add_nfc_credits(struct tb_port *port, int credits);
1054 int tb_port_clear_counter(struct tb_port *port, int counter);
1055 int tb_port_unlock(struct tb_port *port);
1056 int tb_port_enable(struct tb_port *port);
1057 int tb_port_disable(struct tb_port *port);
1058 int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
1059 void tb_port_release_in_hopid(struct tb_port *port, int hopid);
1060 int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
1061 void tb_port_release_out_hopid(struct tb_port *port, int hopid);
1062 struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
1063 struct tb_port *prev);
1066 * tb_port_path_direction_downstream() - Checks if path directed downstream
1067 * @src: Source adapter
1068 * @dst: Destination adapter
1070 * Returns %true only if the specified path from source adapter (@src)
1071 * to destination adapter (@dst) is directed downstream.
1074 tb_port_path_direction_downstream(const struct tb_port *src,
1075 const struct tb_port *dst)
1077 return src->sw->config.depth < dst->sw->config.depth;
1080 static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
1082 return tb_port_is_null(port) && port->sw->credit_allocation;
1086 * tb_for_each_port_on_path() - Iterate over each port on path
1088 * @dst: Destination port
1089 * @p: Port used as iterator
1091 * Walks over each port on path from @src to @dst.
1093 #define tb_for_each_port_on_path(src, dst, p) \
1094 for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
1095 (p) = tb_next_port_on_path((src), (dst), (p)))
1098 * tb_for_each_upstream_port_on_path() - Iterate over each upstreamm port on path
1100 * @dst: Destination port
1101 * @p: Port used as iterator
1103 * Walks over each upstream lane adapter on path from @src to @dst.
1105 #define tb_for_each_upstream_port_on_path(src, dst, p) \
1106 for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
1107 (p) = tb_next_port_on_path((src), (dst), (p))) \
1108 if (!tb_port_is_null((p)) || !tb_is_upstream_port((p))) {\
1112 int tb_port_get_link_speed(struct tb_port *port);
1113 int tb_port_get_link_generation(struct tb_port *port);
1114 int tb_port_get_link_width(struct tb_port *port);
1115 bool tb_port_width_supported(struct tb_port *port, unsigned int width);
1116 int tb_port_set_link_width(struct tb_port *port, enum tb_link_width width);
1117 int tb_port_lane_bonding_enable(struct tb_port *port);
1118 void tb_port_lane_bonding_disable(struct tb_port *port);
1119 int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width,
1121 int tb_port_update_credits(struct tb_port *port);
1123 int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
1124 int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
1125 int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
1126 int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
1127 int tb_port_next_cap(struct tb_port *port, unsigned int offset);
1128 bool tb_port_is_enabled(struct tb_port *port);
1130 bool tb_usb3_port_is_enabled(struct tb_port *port);
1131 int tb_usb3_port_enable(struct tb_port *port, bool enable);
1133 bool tb_pci_port_is_enabled(struct tb_port *port);
1134 int tb_pci_port_enable(struct tb_port *port, bool enable);
1136 int tb_dp_port_hpd_is_active(struct tb_port *port);
1137 int tb_dp_port_hpd_clear(struct tb_port *port);
1138 int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
1139 unsigned int aux_tx, unsigned int aux_rx);
1140 bool tb_dp_port_is_enabled(struct tb_port *port);
1141 int tb_dp_port_enable(struct tb_port *port, bool enable);
1143 struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
1144 struct tb_port *dst, int dst_hopid,
1145 struct tb_port **last, const char *name,
1147 struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
1148 struct tb_port *dst, int dst_hopid, int link_nr,
1150 void tb_path_free(struct tb_path *path);
1151 int tb_path_activate(struct tb_path *path);
1152 void tb_path_deactivate(struct tb_path *path);
1153 bool tb_path_is_invalid(struct tb_path *path);
1154 bool tb_path_port_on_path(const struct tb_path *path,
1155 const struct tb_port *port);
1158 * tb_path_for_each_hop() - Iterate over each hop on path
1159 * @path: Path whose hops to iterate
1160 * @hop: Hop used as iterator
1162 * Iterates over each hop on path.
1164 #define tb_path_for_each_hop(path, hop) \
1165 for ((hop) = &(path)->hops[0]; \
1166 (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
1168 int tb_drom_read(struct tb_switch *sw);
1169 int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
1171 int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
1172 int tb_lc_configure_port(struct tb_port *port);
1173 void tb_lc_unconfigure_port(struct tb_port *port);
1174 int tb_lc_configure_xdomain(struct tb_port *port);
1175 void tb_lc_unconfigure_xdomain(struct tb_port *port);
1176 int tb_lc_start_lane_initialization(struct tb_port *port);
1177 bool tb_lc_is_clx_supported(struct tb_port *port);
1178 bool tb_lc_is_usb_plugged(struct tb_port *port);
1179 bool tb_lc_is_xhci_connected(struct tb_port *port);
1180 int tb_lc_xhci_connect(struct tb_port *port);
1181 void tb_lc_xhci_disconnect(struct tb_port *port);
1182 int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
1183 int tb_lc_set_sleep(struct tb_switch *sw);
1184 bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
1185 bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
1186 int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
1187 int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
1188 int tb_lc_force_power(struct tb_switch *sw);
1190 static inline int tb_route_length(u64 route)
1192 return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT;
1196 * tb_downstream_route() - get route to downstream switch
1198 * Port must not be the upstream port (otherwise a loop is created).
1200 * Return: Returns a route to the switch behind @port.
1202 static inline u64 tb_downstream_route(struct tb_port *port)
1204 return tb_route(port->sw)
1205 | ((u64) port->port << (port->sw->config.depth * 8));
1208 bool tb_is_xdomain_enabled(void);
1209 bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
1210 const void *buf, size_t size);
1211 struct tb_xdomain *tb_xdomain_alloc(struct tb *tb, struct device *parent,
1212 u64 route, const uuid_t *local_uuid,
1213 const uuid_t *remote_uuid);
1214 void tb_xdomain_add(struct tb_xdomain *xd);
1215 void tb_xdomain_remove(struct tb_xdomain *xd);
1216 struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
1219 static inline struct tb_switch *tb_xdomain_parent(struct tb_xdomain *xd)
1221 return tb_to_switch(xd->dev.parent);
1225 * tb_xdomain_downstream_port() - Return downstream facing port of parent router
1226 * @xd: Xdomain pointer
1228 * Returns the downstream port the XDomain is connected to.
1230 static inline struct tb_port *tb_xdomain_downstream_port(struct tb_xdomain *xd)
1232 return tb_port_at(xd->route, tb_xdomain_parent(xd));
1235 int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf,
1237 int tb_retimer_scan(struct tb_port *port, bool add);
1238 void tb_retimer_remove_all(struct tb_port *port);
1240 static inline bool tb_is_retimer(const struct device *dev)
1242 return dev->type == &tb_retimer_type;
1245 static inline struct tb_retimer *tb_to_retimer(struct device *dev)
1247 if (tb_is_retimer(dev))
1248 return container_of(dev, struct tb_retimer, dev);
1253 * usb4_switch_version() - Returns USB4 version of the router
1254 * @sw: Router to check
1256 * Returns major version of USB4 router (%1 for v1, %2 for v2 and so
1257 * on). Can be called to pre-USB4 router too and in that case returns %0.
1259 static inline unsigned int usb4_switch_version(const struct tb_switch *sw)
1261 return FIELD_GET(USB4_VERSION_MAJOR_MASK, sw->config.thunderbolt_version);
1265 * tb_switch_is_usb4() - Is the switch USB4 compliant
1266 * @sw: Switch to check
1268 * Returns true if the @sw is USB4 compliant router, false otherwise.
1270 static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
1272 return usb4_switch_version(sw) > 0;
1275 int usb4_switch_setup(struct tb_switch *sw);
1276 int usb4_switch_configuration_valid(struct tb_switch *sw);
1277 int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
1278 int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
1280 bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
1281 int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags);
1282 int usb4_switch_set_sleep(struct tb_switch *sw);
1283 int usb4_switch_nvm_sector_size(struct tb_switch *sw);
1284 int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
1286 int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsigned int address);
1287 int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
1288 const void *buf, size_t size);
1289 int usb4_switch_nvm_authenticate(struct tb_switch *sw);
1290 int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
1291 int usb4_switch_credits_init(struct tb_switch *sw);
1292 bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
1293 int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1294 int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
1295 struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
1296 const struct tb_port *port);
1297 struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
1298 const struct tb_port *port);
1299 int usb4_switch_add_ports(struct tb_switch *sw);
1300 void usb4_switch_remove_ports(struct tb_switch *sw);
1302 int usb4_port_unlock(struct tb_port *port);
1303 int usb4_port_hotplug_enable(struct tb_port *port);
1304 int usb4_port_configure(struct tb_port *port);
1305 void usb4_port_unconfigure(struct tb_port *port);
1306 int usb4_port_configure_xdomain(struct tb_port *port, struct tb_xdomain *xd);
1307 void usb4_port_unconfigure_xdomain(struct tb_port *port);
1308 int usb4_port_router_offline(struct tb_port *port);
1309 int usb4_port_router_online(struct tb_port *port);
1310 int usb4_port_enumerate_retimers(struct tb_port *port);
1311 bool usb4_port_clx_supported(struct tb_port *port);
1312 int usb4_port_margining_caps(struct tb_port *port, u32 *caps);
1314 bool usb4_port_asym_supported(struct tb_port *port);
1315 int usb4_port_asym_set_link_width(struct tb_port *port, enum tb_link_width width);
1316 int usb4_port_asym_start(struct tb_port *port);
1318 int usb4_port_hw_margin(struct tb_port *port, unsigned int lanes,
1319 unsigned int ber_level, bool timing, bool right_high,
1321 int usb4_port_sw_margin(struct tb_port *port, unsigned int lanes, bool timing,
1322 bool right_high, u32 counter);
1323 int usb4_port_sw_margin_errors(struct tb_port *port, u32 *errors);
1325 int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index);
1326 int usb4_port_retimer_unset_inbound_sbtx(struct tb_port *port, u8 index);
1327 int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
1329 int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
1330 const void *buf, u8 size);
1331 int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
1332 int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
1333 int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
1334 unsigned int address);
1335 int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
1336 unsigned int address, const void *buf,
1338 int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
1339 int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
1341 int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
1342 unsigned int address, void *buf, size_t size);
1344 int usb4_usb3_port_max_link_rate(struct tb_port *port);
1345 int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
1346 int *downstream_bw);
1347 int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
1348 int *downstream_bw);
1349 int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
1350 int *downstream_bw);
1352 int usb4_dp_port_set_cm_id(struct tb_port *port, int cm_id);
1353 bool usb4_dp_port_bandwidth_mode_supported(struct tb_port *port);
1354 bool usb4_dp_port_bandwidth_mode_enabled(struct tb_port *port);
1355 int usb4_dp_port_set_cm_bandwidth_mode_supported(struct tb_port *port,
1357 int usb4_dp_port_group_id(struct tb_port *port);
1358 int usb4_dp_port_set_group_id(struct tb_port *port, int group_id);
1359 int usb4_dp_port_nrd(struct tb_port *port, int *rate, int *lanes);
1360 int usb4_dp_port_set_nrd(struct tb_port *port, int rate, int lanes);
1361 int usb4_dp_port_granularity(struct tb_port *port);
1362 int usb4_dp_port_set_granularity(struct tb_port *port, int granularity);
1363 int usb4_dp_port_set_estimated_bandwidth(struct tb_port *port, int bw);
1364 int usb4_dp_port_allocated_bandwidth(struct tb_port *port);
1365 int usb4_dp_port_allocate_bandwidth(struct tb_port *port, int bw);
1366 int usb4_dp_port_requested_bandwidth(struct tb_port *port);
1368 int usb4_pci_port_set_ext_encapsulation(struct tb_port *port, bool enable);
1370 static inline bool tb_is_usb4_port_device(const struct device *dev)
1372 return dev->type == &usb4_port_device_type;
1375 static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
1377 if (tb_is_usb4_port_device(dev))
1378 return container_of(dev, struct usb4_port, dev);
1382 struct usb4_port *usb4_port_device_add(struct tb_port *port);
1383 void usb4_port_device_remove(struct usb4_port *usb4);
1384 int usb4_port_device_resume(struct usb4_port *usb4);
1386 static inline bool usb4_port_device_is_offline(const struct usb4_port *usb4)
1388 return usb4->offline;
1391 void tb_check_quirks(struct tb_switch *sw);
1394 bool tb_acpi_add_links(struct tb_nhi *nhi);
1396 bool tb_acpi_is_native(void);
1397 bool tb_acpi_may_tunnel_usb3(void);
1398 bool tb_acpi_may_tunnel_dp(void);
1399 bool tb_acpi_may_tunnel_pcie(void);
1400 bool tb_acpi_is_xdomain_allowed(void);
1402 int tb_acpi_init(void);
1403 void tb_acpi_exit(void);
1404 int tb_acpi_power_on_retimers(struct tb_port *port);
1405 int tb_acpi_power_off_retimers(struct tb_port *port);
1407 static inline bool tb_acpi_add_links(struct tb_nhi *nhi) { return false; }
1409 static inline bool tb_acpi_is_native(void) { return true; }
1410 static inline bool tb_acpi_may_tunnel_usb3(void) { return true; }
1411 static inline bool tb_acpi_may_tunnel_dp(void) { return true; }
1412 static inline bool tb_acpi_may_tunnel_pcie(void) { return true; }
1413 static inline bool tb_acpi_is_xdomain_allowed(void) { return true; }
1415 static inline int tb_acpi_init(void) { return 0; }
1416 static inline void tb_acpi_exit(void) { }
1417 static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0; }
1418 static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0; }
1421 #ifdef CONFIG_DEBUG_FS
1422 void tb_debugfs_init(void);
1423 void tb_debugfs_exit(void);
1424 void tb_switch_debugfs_init(struct tb_switch *sw);
1425 void tb_switch_debugfs_remove(struct tb_switch *sw);
1426 void tb_xdomain_debugfs_init(struct tb_xdomain *xd);
1427 void tb_xdomain_debugfs_remove(struct tb_xdomain *xd);
1428 void tb_service_debugfs_init(struct tb_service *svc);
1429 void tb_service_debugfs_remove(struct tb_service *svc);
1431 static inline void tb_debugfs_init(void) { }
1432 static inline void tb_debugfs_exit(void) { }
1433 static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
1434 static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
1435 static inline void tb_xdomain_debugfs_init(struct tb_xdomain *xd) { }
1436 static inline void tb_xdomain_debugfs_remove(struct tb_xdomain *xd) { }
1437 static inline void tb_service_debugfs_init(struct tb_service *svc) { }
1438 static inline void tb_service_debugfs_remove(struct tb_service *svc) { }