From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/thunderbolt/tb.h | 633 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 599 insertions(+), 34 deletions(-)
diff --git a/kernel/drivers/thunderbolt/tb.h b/kernel/drivers/thunderbolt/tb.h
index d927cf7..266f3bf 100644
--- a/kernel/drivers/thunderbolt/tb.h
+++ b/kernel/drivers/thunderbolt/tb.h
@@ -1,8 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
- * Thunderbolt Cactus Ridge driver - bus logic (NHI independent)
+ * Thunderbolt driver - bus logic (NHI independent)
*
* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
+ * Copyright (C) 2018, Intel Corporation
*/
#ifndef TB_H_
@@ -17,8 +18,17 @@
#include "ctl.h"
#include "dma_port.h"
+#define NVM_MIN_SIZE SZ_32K
+#define NVM_MAX_SIZE SZ_512K
+
+/* Intel specific NVM offsets */
+#define NVM_DEVID 0x05
+#define NVM_VERSION 0x08
+#define NVM_FLASH_SIZE 0x45
+
/**
- * struct tb_switch_nvm - Structure holding switch NVM information
+ * struct tb_nvm - Structure holding NVM information
+ * @dev: Owner of the NVM
* @major: Major version number of the active NVM portion
* @minor: Minor version number of the active NVM portion
* @id: Identifier used with both NVM portions
@@ -28,9 +38,14 @@
* the actual NVM flash device
* @buf_data_size: Number of bytes actually consumed by the new NVM
* image
- * @authenticating: The switch is authenticating the new NVM
+ * @authenticating: The device is authenticating the new NVM
+ * @flushed: The image has been flushed to the storage area
+ *
+ * The user of this structure needs to handle serialization of possible
+ * concurrent access.
*/
-struct tb_switch_nvm {
+struct tb_nvm {
+ struct device *dev;
u8 major;
u8 minor;
int id;
@@ -39,9 +54,44 @@
void *buf;
size_t buf_data_size;
bool authenticating;
+ bool flushed;
};
#define TB_SWITCH_KEY_SIZE 32
+#define TB_SWITCH_MAX_DEPTH 6
+#define USB4_SWITCH_MAX_DEPTH 5
+
+/**
+ * enum tb_switch_tmu_rate - TMU refresh rate
+ * @TB_SWITCH_TMU_RATE_OFF: %0 (Disable Time Sync handshake)
+ * @TB_SWITCH_TMU_RATE_HIFI: %16 us time interval between successive
+ * transmission of the Delay Request TSNOS
+ * (Time Sync Notification Ordered Set) on a Link
+ * @TB_SWITCH_TMU_RATE_NORMAL: %1 ms time interval between successive
+ * transmission of the Delay Request TSNOS on
+ * a Link
+ */
+enum tb_switch_tmu_rate {
+ TB_SWITCH_TMU_RATE_OFF = 0,
+ TB_SWITCH_TMU_RATE_HIFI = 16,
+ TB_SWITCH_TMU_RATE_NORMAL = 1000,
+};
+
+/**
+ * struct tb_switch_tmu - Structure holding switch TMU configuration
+ * @cap: Offset to the TMU capability (%0 if not found)
+ * @has_ucap: Does the switch support uni-directional mode
+ * @rate: TMU refresh rate related to upstream switch. In case of root
+ * switch this holds the domain rate.
+ * @unidirectional: Is the TMU in uni-directional or bi-directional mode
+ * related to upstream switch. Don't case for root switch.
+ */
+struct tb_switch_tmu {
+ int cap;
+ bool has_ucap;
+ enum tb_switch_tmu_rate rate;
+ bool unidirectional;
+};
/**
* struct tb_switch - a thunderbolt switch
@@ -52,6 +102,7 @@
* mailbox this will hold the pointer to that (%NULL
* otherwise). If set it also means the switch has
* upgradeable NVM.
+ * @tmu: The switch TMU configuration
* @tb: Pointer to the domain the switch belongs to
* @uid: Unique ID of the switch
* @uuid: UUID of the switch (or %NULL if not supported)
@@ -59,8 +110,12 @@
* @device: Device ID of the switch
* @vendor_name: Name of the vendor (or %NULL if not known)
* @device_name: Name of the device (or %NULL if not known)
+ * @link_speed: Speed of the link in Gb/s
+ * @link_width: Width of the link (1 or 2)
+ * @link_usb4: Upstream link is USB4
* @generation: Switch Thunderbolt generation
* @cap_plug_events: Offset to the plug events capability (%0 if not found)
+ * @cap_lc: Offset to the link controller capability (%0 if not found)
* @is_unplugged: The switch is going away
* @drom: DROM of the switch (%NULL if not found)
* @nvm: Pointer to the NVM if the switch has one (%NULL otherwise)
@@ -69,14 +124,17 @@
* @boot: Whether the switch was already authorized on boot or not
* @rpm: The switch supports runtime PM
* @authorized: Whether the switch is authorized by user or policy
- * @work: Work used to automatically authorize a switch
* @security_level: Switch supported security level
+ * @debugfs_dir: Pointer to the debugfs structure
* @key: Contains the key used to challenge the device or %NULL if not
* supported. Size of the key is %TB_SWITCH_KEY_SIZE.
* @connection_id: Connection ID used with ICM messaging
* @connection_key: Connection key used with ICM messaging
* @link: Root switch link this switch is connected (ICM only)
* @depth: Depth in the chain this switch is connected (ICM only)
+ * @rpm_complete: Completion used to wait for runtime resume to
+ * complete (ICM only)
+ * @quirks: Quirks used for this Thunderbolt switch
*
* When the switch is being added or removed to the domain (other
* switches) you need to have domain lock held.
@@ -86,6 +144,7 @@
struct tb_regs_switch_header config;
struct tb_port *ports;
struct tb_dma_port *dma_port;
+ struct tb_switch_tmu tmu;
struct tb *tb;
u64 uid;
uuid_t *uuid;
@@ -93,23 +152,29 @@
u16 device;
const char *vendor_name;
const char *device_name;
+ unsigned int link_speed;
+ unsigned int link_width;
+ bool link_usb4;
unsigned int generation;
int cap_plug_events;
+ int cap_lc;
bool is_unplugged;
u8 *drom;
- struct tb_switch_nvm *nvm;
+ struct tb_nvm *nvm;
bool no_nvm_upgrade;
bool safe_mode;
bool boot;
bool rpm;
unsigned int authorized;
- struct work_struct work;
enum tb_security_level security_level;
+ struct dentry *debugfs_dir;
u8 *key;
u8 connection_id;
u8 connection_key;
u8 link;
u8 depth;
+ struct completion rpm_complete;
+ unsigned long quirks;
};
/**
@@ -119,11 +184,18 @@
* @remote: Remote port (%NULL if not connected)
* @xdomain: Remote host (%NULL if not connected)
* @cap_phy: Offset, zero if not found
+ * @cap_tmu: Offset of the adapter specific TMU capability (%0 if not present)
+ * @cap_adap: Offset of the adapter specific capability (%0 if not present)
+ * @cap_usb4: Offset to the USB4 port capability (%0 if not present)
* @port: Port number on switch
- * @disabled: Disabled by eeprom
+ * @disabled: Disabled by eeprom or enabled but not implemented
+ * @bonded: true if the port is bonded (two lanes combined as one)
* @dual_link_port: If the switch is connected using two ports, points
* to the other port.
* @link_nr: Is this primary or secondary port on the dual_link.
+ * @in_hopids: Currently allocated input HopIDs
+ * @out_hopids: Currently allocated output HopIDs
+ * @list: Used to link ports to DP resources list
*/
struct tb_port {
struct tb_regs_port_header config;
@@ -131,19 +203,61 @@
struct tb_port *remote;
struct tb_xdomain *xdomain;
int cap_phy;
+ int cap_tmu;
+ int cap_adap;
+ int cap_usb4;
u8 port;
bool disabled;
+ bool bonded;
struct tb_port *dual_link_port;
u8 link_nr:1;
+ struct ida in_hopids;
+ struct ida out_hopids;
+ struct list_head list;
+};
+
+/**
+ * tb_retimer: Thunderbolt retimer
+ * @dev: Device for the retimer
+ * @tb: Pointer to the domain the retimer belongs to
+ * @index: Retimer index facing the router USB4 port
+ * @vendor: Vendor ID of the retimer
+ * @device: Device ID of the retimer
+ * @port: Pointer to the lane 0 adapter
+ * @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
+ * @auth_status: Status of last NVM authentication
+ */
+struct tb_retimer {
+ struct device dev;
+ struct tb *tb;
+ u8 index;
+ u32 vendor;
+ u32 device;
+ struct tb_port *port;
+ struct tb_nvm *nvm;
+ u32 auth_status;
};
/**
* struct tb_path_hop - routing information for a tb_path
+ * @in_port: Ingress port of a switch
+ * @out_port: Egress port of a switch where the packet is routed out
+ * (must be on the same switch than @in_port)
+ * @in_hop_index: HopID where the path configuration entry is placed in
+ * the path config space of @in_port.
+ * @in_counter_index: Used counter index (not used in the driver
+ * currently, %-1 to disable)
+ * @next_hop_index: HopID of the packet when it is routed out from @out_port
+ * @initial_credits: Number of initial flow control credits allocated for
+ * the path
*
* Hop configuration is always done on the IN port of a switch.
* in_port and out_port have to be on the same switch. Packets arriving on
* in_port with "hop" = in_hop_index will get routed to through out_port. The
- * next hop to take (on out_port->remote) is determined by next_hop_index.
+ * next hop to take (on out_port->remote) is determined by
+ * next_hop_index. When routing packet to another switch (out->remote is
+ * set) the @next_hop_index must match the @in_hop_index of that next
+ * hop to make routing possible.
*
* in_counter_index is the index of a counter (in TB_CFG_COUNTERS) on the in
* port.
@@ -152,43 +266,81 @@
struct tb_port *in_port;
struct tb_port *out_port;
int in_hop_index;
- int in_counter_index; /* write -1 to disable counters for this hop. */
+ int in_counter_index;
int next_hop_index;
+ unsigned int initial_credits;
};
/**
* enum tb_path_port - path options mask
+ * @TB_PATH_NONE: Do not activate on any hop on path
+ * @TB_PATH_SOURCE: Activate on the first hop (out of src)
+ * @TB_PATH_INTERNAL: Activate on the intermediate hops (not the first/last)
+ * @TB_PATH_DESTINATION: Activate on the last hop (into dst)
+ * @TB_PATH_ALL: Activate on all hops on the path
*/
enum tb_path_port {
TB_PATH_NONE = 0,
- TB_PATH_SOURCE = 1, /* activate on the first hop (out of src) */
- TB_PATH_INTERNAL = 2, /* activate on other hops (not the first/last) */
- TB_PATH_DESTINATION = 4, /* activate on the last hop (into dst) */
+ TB_PATH_SOURCE = 1,
+ TB_PATH_INTERNAL = 2,
+ TB_PATH_DESTINATION = 4,
TB_PATH_ALL = 7,
};
/**
* struct tb_path - a unidirectional path between two ports
+ * @tb: Pointer to the domain structure
+ * @name: Name of the path (used for debugging)
+ * @nfc_credits: Number of non flow controlled credits allocated for the path
+ * @ingress_shared_buffer: Shared buffering used for ingress ports on the path
+ * @egress_shared_buffer: Shared buffering used for egress ports on the path
+ * @ingress_fc_enable: Flow control for ingress ports on the path
+ * @egress_fc_enable: Flow control for egress ports on the path
+ * @priority: Priority group if the path
+ * @weight: Weight of the path inside the priority group
+ * @drop_packages: Drop packages from queue tail or head
+ * @activated: Is the path active
+ * @clear_fc: Clear all flow control from the path config space entries
+ * when deactivating this path
+ * @hops: Path hops
+ * @path_length: How many hops the path uses
*
- * A path consists of a number of hops (see tb_path_hop). To establish a PCIe
- * tunnel two paths have to be created between the two PCIe ports.
- *
+ * A path consists of a number of hops (see &struct tb_path_hop). To
+ * establish a PCIe tunnel two paths have to be created between the two
+ * PCIe ports.
*/
struct tb_path {
struct tb *tb;
- int nfc_credits; /* non flow controlled credits */
+ const char *name;
+ int nfc_credits;
enum tb_path_port ingress_shared_buffer;
enum tb_path_port egress_shared_buffer;
enum tb_path_port ingress_fc_enable;
enum tb_path_port egress_fc_enable;
- int priority:3;
+ unsigned int priority:3;
int weight:4;
bool drop_packages;
bool activated;
+ bool clear_fc;
struct tb_path_hop *hops;
- int path_length; /* number of hops */
+ int path_length;
};
+
+/* HopIDs 0-7 are reserved by the Thunderbolt protocol */
+#define TB_PATH_MIN_HOPID 8
+/*
+ * Support paths from the farthest (depth 6) router to the host and back
+ * to the same level (not necessarily to the same router).
+ */
+#define TB_PATH_MAX_HOPS (7 * 2)
+
+/* Possible wake types */
+#define TB_WAKE_ON_CONNECT BIT(0)
+#define TB_WAKE_ON_DISCONNECT BIT(1)
+#define TB_WAKE_ON_USB4 BIT(2)
+#define TB_WAKE_ON_USB3 BIT(3)
+#define TB_WAKE_ON_PCIE BIT(4)
/**
* struct tb_cm_ops - Connection manager specific operations vector
@@ -199,9 +351,13 @@
* @suspend_noirq: Connection manager specific suspend_noirq
* @resume_noirq: Connection manager specific resume_noirq
* @suspend: Connection manager specific suspend
+ * @freeze_noirq: Connection manager specific freeze_noirq
+ * @thaw_noirq: Connection manager specific thaw_noirq
* @complete: Connection manager specific complete
* @runtime_suspend: Connection manager specific runtime_suspend
* @runtime_resume: Connection manager specific runtime_resume
+ * @runtime_suspend_switch: Runtime suspend a switch
+ * @runtime_resume_switch: Runtime resume a switch
* @handle_event: Handle thunderbolt event
* @get_boot_acl: Get boot ACL list
* @set_boot_acl: Set boot ACL list
@@ -219,9 +375,13 @@
int (*suspend_noirq)(struct tb *tb);
int (*resume_noirq)(struct tb *tb);
int (*suspend)(struct tb *tb);
+ int (*freeze_noirq)(struct tb *tb);
+ int (*thaw_noirq)(struct tb *tb);
void (*complete)(struct tb *tb);
int (*runtime_suspend)(struct tb *tb);
int (*runtime_resume)(struct tb *tb);
+ int (*runtime_suspend_switch)(struct tb_switch *sw);
+ int (*runtime_resume_switch)(struct tb_switch *sw);
void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
const void *buf, size_t size);
int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
@@ -259,7 +419,20 @@
return &sw->ports[sw->config.upstream_port_number];
}
-static inline u64 tb_route(struct tb_switch *sw)
+/**
+ * tb_is_upstream_port() - Is the port upstream facing
+ * @port: Port to check
+ *
+ * Returns true if @port is upstream facing port. In case of dual link
+ * ports both return true.
+ */
+static inline bool tb_is_upstream_port(const struct tb_port *port)
+{
+ const struct tb_port *upstream_port = tb_upstream_port(port->sw);
+ return port == upstream_port || port->dual_link_port == upstream_port;
+}
+
+static inline u64 tb_route(const struct tb_switch *sw)
{
return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
}
@@ -274,9 +447,69 @@
return &sw->ports[port];
}
+/**
+ * tb_port_has_remote() - Does the port have switch connected downstream
+ * @port: Port to check
+ *
+ * Returns true only when the port is primary port and has remote set.
+ */
+static inline bool tb_port_has_remote(const struct tb_port *port)
+{
+ if (tb_is_upstream_port(port))
+ return false;
+ if (!port->remote)
+ return false;
+ if (port->dual_link_port && port->link_nr)
+ return false;
+
+ return true;
+}
+
+static inline bool tb_port_is_null(const struct tb_port *port)
+{
+ return port && port->port && port->config.type == TB_TYPE_PORT;
+}
+
+static inline bool tb_port_is_nhi(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_NHI;
+}
+
+static inline bool tb_port_is_pcie_down(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_PCIE_DOWN;
+}
+
+static inline bool tb_port_is_pcie_up(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_PCIE_UP;
+}
+
+static inline bool tb_port_is_dpin(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_DP_HDMI_IN;
+}
+
+static inline bool tb_port_is_dpout(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
+}
+
+static inline bool tb_port_is_usb3_down(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_USB3_DOWN;
+}
+
+static inline bool tb_port_is_usb3_up(const struct tb_port *port)
+{
+ return port && port->config.type == TB_TYPE_USB3_UP;
+}
+
static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
+ if (sw->is_unplugged)
+ return -ENODEV;
return tb_cfg_read(sw->tb->ctl,
buffer,
tb_route(sw),
@@ -286,9 +519,11 @@
length);
}
-static inline int tb_sw_write(struct tb_switch *sw, void *buffer,
+static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
+ if (sw->is_unplugged)
+ return -ENODEV;
return tb_cfg_write(sw->tb->ctl,
buffer,
tb_route(sw),
@@ -301,6 +536,8 @@
static inline int tb_port_read(struct tb_port *port, void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
+ if (port->sw->is_unplugged)
+ return -ENODEV;
return tb_cfg_read(port->sw->tb->ctl,
buffer,
tb_route(port->sw),
@@ -313,6 +550,8 @@
static inline int tb_port_write(struct tb_port *port, const void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
+ if (port->sw->is_unplugged)
+ return -ENODEV;
return tb_cfg_write(port->sw->tb->ctl,
buffer,
tb_route(port->sw),
@@ -326,22 +565,22 @@
#define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
-
+#define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define __TB_SW_PRINT(level, sw, fmt, arg...) \
do { \
- struct tb_switch *__sw = (sw); \
+ const struct tb_switch *__sw = (sw); \
level(__sw->tb, "%llx: " fmt, \
tb_route(__sw), ## arg); \
} while (0)
#define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
#define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ##arg)
#define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ##arg)
-
+#define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ##arg)
#define __TB_PORT_PRINT(level, _port, fmt, arg...) \
do { \
- struct tb_port *__port = (_port); \
+ const struct tb_port *__port = (_port); \
level(__port->sw->tb, "%llx:%x: " fmt, \
tb_route(__port->sw), __port->port, ## arg); \
} while (0)
@@ -351,16 +590,18 @@
__TB_PORT_PRINT(tb_warn, port, fmt, ##arg)
#define tb_port_info(port, fmt, arg...) \
__TB_PORT_PRINT(tb_info, port, fmt, ##arg)
+#define tb_port_dbg(port, fmt, arg...) \
+ __TB_PORT_PRINT(tb_dbg, port, fmt, ##arg)
struct tb *icm_probe(struct tb_nhi *nhi);
struct tb *tb_probe(struct tb_nhi *nhi);
extern struct device_type tb_domain_type;
+extern struct device_type tb_retimer_type;
extern struct device_type tb_switch_type;
int tb_domain_init(void);
void tb_domain_exit(void);
-void tb_switch_exit(void);
int tb_xdomain_init(void);
void tb_xdomain_exit(void);
@@ -370,6 +611,8 @@
int tb_domain_suspend_noirq(struct tb *tb);
int tb_domain_resume_noirq(struct tb *tb);
int tb_domain_suspend(struct tb *tb);
+int tb_domain_freeze_noirq(struct tb *tb);
+int tb_domain_thaw_noirq(struct tb *tb);
void tb_domain_complete(struct tb *tb);
int tb_domain_runtime_suspend(struct tb *tb);
int tb_domain_runtime_resume(struct tb *tb);
@@ -381,10 +624,26 @@
int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd);
int tb_domain_disconnect_all_paths(struct tb *tb);
+static inline struct tb *tb_domain_get(struct tb *tb)
+{
+ if (tb)
+ get_device(&tb->dev);
+ return tb;
+}
+
static inline void tb_domain_put(struct tb *tb)
{
put_device(&tb->dev);
}
+
+struct tb_nvm *tb_nvm_alloc(struct device *dev);
+int tb_nvm_add_active(struct tb_nvm *nvm, size_t size, nvmem_reg_read_t reg_read);
+int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
+ size_t bytes);
+int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size,
+ nvmem_reg_write_t reg_write);
+void tb_nvm_free(struct tb_nvm *nvm);
+void tb_nvm_exit(void);
struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
u64 route);
@@ -393,14 +652,27 @@
int tb_switch_configure(struct tb_switch *sw);
int tb_switch_add(struct tb_switch *sw);
void tb_switch_remove(struct tb_switch *sw);
-void tb_switch_suspend(struct tb_switch *sw);
+void tb_switch_suspend(struct tb_switch *sw, bool runtime);
int tb_switch_resume(struct tb_switch *sw);
-int tb_switch_reset(struct tb *tb, u64 route);
+int tb_switch_reset(struct tb_switch *sw);
void tb_sw_set_unplugged(struct tb_switch *sw);
+struct tb_port *tb_switch_find_port(struct tb_switch *sw,
+ enum tb_port_type type);
struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
+
+/**
+ * tb_switch_for_each_port() - Iterate over each switch port
+ * @sw: Switch whose ports to iterate
+ * @p: Port used as iterator
+ *
+ * Iterates over each switch port skipping the control port (port %0).
+ */
+#define tb_switch_for_each_port(sw, p) \
+ for ((p) = &(sw)->ports[1]; \
+ (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
{
@@ -426,31 +698,225 @@
return NULL;
}
+static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
+{
+ return tb_to_switch(sw->dev.parent);
+}
+
+static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
+{
+ return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
+ sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
+}
+
+static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
+{
+ return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
+ sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
+}
+
+static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
+ case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
+ return true;
+ }
+ }
+ return false;
+}
+
+static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
+ return true;
+ }
+ }
+ return false;
+}
+
+static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
+ return true;
+ }
+ }
+ return false;
+}
+
+static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
+ return true;
+ }
+ }
+ return false;
+}
+
+static inline bool tb_switch_is_ice_lake(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_ICL_NHI0:
+ case PCI_DEVICE_ID_INTEL_ICL_NHI1:
+ return true;
+ }
+ }
+ return false;
+}
+
+static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
+{
+ if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
+ switch (sw->config.device_id) {
+ case PCI_DEVICE_ID_INTEL_TGL_NHI0:
+ case PCI_DEVICE_ID_INTEL_TGL_NHI1:
+ case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
+ case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * tb_switch_is_usb4() - Is the switch USB4 compliant
+ * @sw: Switch to check
+ *
+ * Returns true if the @sw is USB4 compliant router, false otherwise.
+ */
+static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
+{
+ return sw->config.thunderbolt_version == USB4_VERSION_1_0;
+}
+
+/**
+ * tb_switch_is_icm() - Is the switch handled by ICM firmware
+ * @sw: Switch to check
+ *
+ * In case there is a need to differentiate whether ICM firmware or SW CM
+ * is handling @sw this function can be called. It is valid to call this
+ * after tb_switch_alloc() and tb_switch_configure() has been called
+ * (latter only for SW CM case).
+ */
+static inline bool tb_switch_is_icm(const struct tb_switch *sw)
+{
+ return !sw->config.enabled;
+}
+
+int tb_switch_lane_bonding_enable(struct tb_switch *sw);
+void tb_switch_lane_bonding_disable(struct tb_switch *sw);
+int tb_switch_configure_link(struct tb_switch *sw);
+void tb_switch_unconfigure_link(struct tb_switch *sw);
+
+bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
+int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
+void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
+
+int tb_switch_tmu_init(struct tb_switch *sw);
+int tb_switch_tmu_post_time(struct tb_switch *sw);
+int tb_switch_tmu_disable(struct tb_switch *sw);
+int tb_switch_tmu_enable(struct tb_switch *sw);
+
+static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw)
+{
+ return sw->tmu.rate == TB_SWITCH_TMU_RATE_HIFI &&
+ !sw->tmu.unidirectional;
+}
+
int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
int tb_port_add_nfc_credits(struct tb_port *port, int credits);
+int tb_port_set_initial_credits(struct tb_port *port, u32 credits);
int tb_port_clear_counter(struct tb_port *port, int counter);
+int tb_port_unlock(struct tb_port *port);
+int tb_port_enable(struct tb_port *port);
+int tb_port_disable(struct tb_port *port);
+int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
+void tb_port_release_in_hopid(struct tb_port *port, int hopid);
+int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
+void tb_port_release_out_hopid(struct tb_port *port, int hopid);
+struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
+ struct tb_port *prev);
+
+/**
+ * tb_for_each_port_on_path() - Iterate over each port on path
+ * @src: Source port
+ * @dst: Destination port
+ * @p: Port used as iterator
+ *
+ * Walks over each port on path from @src to @dst.
+ */
+#define tb_for_each_port_on_path(src, dst, p) \
+ for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
+ (p) = tb_next_port_on_path((src), (dst), (p)))
+
+int tb_port_get_link_speed(struct tb_port *port);
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
+int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
+int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
+int tb_port_next_cap(struct tb_port *port, unsigned int offset);
+bool tb_port_is_enabled(struct tb_port *port);
-struct tb_path *tb_path_alloc(struct tb *tb, int num_hops);
+bool tb_usb3_port_is_enabled(struct tb_port *port);
+int tb_usb3_port_enable(struct tb_port *port, bool enable);
+
+bool tb_pci_port_is_enabled(struct tb_port *port);
+int tb_pci_port_enable(struct tb_port *port, bool enable);
+
+int tb_dp_port_hpd_is_active(struct tb_port *port);
+int tb_dp_port_hpd_clear(struct tb_port *port);
+int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
+ unsigned int aux_tx, unsigned int aux_rx);
+bool tb_dp_port_is_enabled(struct tb_port *port);
+int tb_dp_port_enable(struct tb_port *port, bool enable);
+
+struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
+ struct tb_port *dst, int dst_hopid,
+ struct tb_port **last, const char *name);
+struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
+ struct tb_port *dst, int dst_hopid, int link_nr,
+ const char *name);
void tb_path_free(struct tb_path *path);
int tb_path_activate(struct tb_path *path);
void tb_path_deactivate(struct tb_path *path);
bool tb_path_is_invalid(struct tb_path *path);
+bool tb_path_port_on_path(const struct tb_path *path,
+ const struct tb_port *port);
int tb_drom_read(struct tb_switch *sw);
int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
+int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
+int tb_lc_configure_port(struct tb_port *port);
+void tb_lc_unconfigure_port(struct tb_port *port);
+int tb_lc_configure_xdomain(struct tb_port *port);
+void tb_lc_unconfigure_xdomain(struct tb_port *port);
+int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
+int tb_lc_set_sleep(struct tb_switch *sw);
+bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
+bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
+int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
+int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
+int tb_lc_force_power(struct tb_switch *sw);
static inline int tb_route_length(u64 route)
{
return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT;
-}
-
-static inline bool tb_is_upstream_port(struct tb_port *port)
-{
- return port == tb_upstream_port(port->sw);
}
/**
@@ -476,4 +942,103 @@
struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
+int tb_retimer_scan(struct tb_port *port);
+void tb_retimer_remove_all(struct tb_port *port);
+
+static inline bool tb_is_retimer(const struct device *dev)
+{
+ return dev->type == &tb_retimer_type;
+}
+
+static inline struct tb_retimer *tb_to_retimer(struct device *dev)
+{
+ if (tb_is_retimer(dev))
+ return container_of(dev, struct tb_retimer, dev);
+ return NULL;
+}
+
+int usb4_switch_setup(struct tb_switch *sw);
+int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
+int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
+ size_t size);
+bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
+int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags);
+int usb4_switch_set_sleep(struct tb_switch *sw);
+int usb4_switch_nvm_sector_size(struct tb_switch *sw);
+int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
+ size_t size);
+int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
+ const void *buf, size_t size);
+int usb4_switch_nvm_authenticate(struct tb_switch *sw);
+bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
+int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
+int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
+struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
+ const struct tb_port *port);
+struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
+ const struct tb_port *port);
+
+int usb4_port_unlock(struct tb_port *port);
+int usb4_port_hotplug_enable(struct tb_port *port);
+int usb4_port_configure(struct tb_port *port);
+void usb4_port_unconfigure(struct tb_port *port);
+int usb4_port_configure_xdomain(struct tb_port *port);
+void usb4_port_unconfigure_xdomain(struct tb_port *port);
+int usb4_port_enumerate_retimers(struct tb_port *port);
+
+int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
+ u8 size);
+int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
+ const void *buf, u8 size);
+int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
+int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
+int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
+ unsigned int address, const void *buf,
+ size_t size);
+int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
+int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
+ u32 *status);
+int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
+ unsigned int address, void *buf, size_t size);
+
+int usb4_usb3_port_max_link_rate(struct tb_port *port);
+int usb4_usb3_port_actual_link_rate(struct tb_port *port);
+int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
+ int *downstream_bw);
+int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
+ int *downstream_bw);
+int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
+ int *downstream_bw);
+
+/* Keep link controller awake during update */
+#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
+
+void tb_check_quirks(struct tb_switch *sw);
+
+#ifdef CONFIG_ACPI
+void tb_acpi_add_links(struct tb_nhi *nhi);
+#else
+static inline void tb_acpi_add_links(struct tb_nhi *nhi) { }
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+void tb_debugfs_init(void);
+void tb_debugfs_exit(void);
+void tb_switch_debugfs_init(struct tb_switch *sw);
+void tb_switch_debugfs_remove(struct tb_switch *sw);
+#else
+static inline void tb_debugfs_init(void) { }
+static inline void tb_debugfs_exit(void) { }
+static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
+static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
+#endif
+
+#ifdef CONFIG_USB4_KUNIT_TEST
+int tb_test_init(void);
+void tb_test_exit(void);
+#else
+static inline int tb_test_init(void) { return 0; }
+static inline void tb_test_exit(void) { }
+#endif
+
#endif
--
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