diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 572 |
1 files changed, 429 insertions, 143 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 74d3b14f004e..e96474f17067 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -9,23 +9,23 @@ #ifndef TB_H_ #define TB_H_ +#include <linux/debugfs.h> #include <linux/nvmem-provider.h> #include <linux/pci.h> #include <linux/thunderbolt.h> #include <linux/uuid.h> +#include <linux/bitfield.h> #include "tb_regs.h" #include "ctl.h" #include "dma_port.h" -#define NVM_MIN_SIZE SZ_32K -#define NVM_MAX_SIZE SZ_512K -#define NVM_DATA_DWORDS 16 - -/* Intel specific NVM offsets */ -#define NVM_DEVID 0x05 -#define NVM_VERSION 0x08 -#define NVM_FLASH_SIZE 0x45 +/* Keep link controller awake during update */ +#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0) +/* Disable CLx if not supported */ +#define QUIRK_NO_CLX BIT(1) +/* Need to keep power on while USB4 port is in redrive mode */ +#define QUIRK_KEEP_POWER_IN_DP_REDRIVE BIT(2) /** * struct tb_nvm - Structure holding NVM information @@ -34,28 +34,35 @@ * @minor: Minor version number of the active NVM portion * @id: Identifier used with both NVM portions * @active: Active portion NVMem device + * @active_size: Size in bytes of the active NVM * @non_active: Non-active portion NVMem device * @buf: Buffer where the NVM image is stored before it is written to * the actual NVM flash device + * @buf_data_start: Where the actual image starts after skipping + * possible headers * @buf_data_size: Number of bytes actually consumed by the new NVM * image * @authenticating: The device is authenticating the new NVM * @flushed: The image has been flushed to the storage area + * @vops: Router vendor specific NVM operations (optional) * * The user of this structure needs to handle serialization of possible * concurrent access. */ struct tb_nvm { struct device *dev; - u8 major; - u8 minor; + u32 major; + u32 minor; int id; struct nvmem_device *active; + size_t active_size; struct nvmem_device *non_active; void *buf; + void *buf_data_start; size_t buf_data_size; bool authenticating; bool flushed; + const struct tb_nvm_vendor_ops *vops; }; enum tb_nvm_write_ops { @@ -69,51 +76,37 @@ enum tb_nvm_write_ops { #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_mode - TMU mode + * @TB_SWITCH_TMU_MODE_OFF: TMU is off + * @TB_SWITCH_TMU_MODE_LOWRES: Uni-directional, normal mode + * @TB_SWITCH_TMU_MODE_HIFI_UNI: Uni-directional, HiFi mode + * @TB_SWITCH_TMU_MODE_HIFI_BI: Bi-directional, HiFi mode + * @TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI: Enhanced Uni-directional, MedRes mode + * + * Ordering is based on TMU accuracy level (highest last). */ -enum tb_switch_tmu_rate { - TB_SWITCH_TMU_RATE_OFF = 0, - TB_SWITCH_TMU_RATE_HIFI = 16, - TB_SWITCH_TMU_RATE_NORMAL = 1000, +enum tb_switch_tmu_mode { + TB_SWITCH_TMU_MODE_OFF, + TB_SWITCH_TMU_MODE_LOWRES, + TB_SWITCH_TMU_MODE_HIFI_UNI, + TB_SWITCH_TMU_MODE_HIFI_BI, + TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI, }; /** - * struct tb_switch_tmu - Structure holding switch TMU configuration + * struct tb_switch_tmu - Structure holding router 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. Reflects the HW setting. - * @unidirectional: Is the TMU in uni-directional or bi-directional mode - * related to upstream switch. Don't care for root switch. - * Reflects the HW setting. - * @unidirectional_request: Is the new TMU mode: uni-directional or bi-directional - * that is requested to be set. Related to upstream switch. - * Don't care for root switch. - * @rate_request: TMU new refresh rate related to upstream switch that is - * requested to be set. In case of root switch, this holds - * the new domain rate that is requested to be set. + * @mode: TMU mode related to the upstream router. Reflects the HW + * setting. Don't care for host router. + * @mode_request: TMU mode requested to set. Related to upstream router. + * Don't care for host router. */ struct tb_switch_tmu { int cap; bool has_ucap; - enum tb_switch_tmu_rate rate; - bool unidirectional; - bool unidirectional_request; - enum tb_switch_tmu_rate rate_request; -}; - -enum tb_clx { - TB_CLX_DISABLE, - TB_CL0S, - TB_CL1, - TB_CL2, + enum tb_switch_tmu_mode mode; + enum tb_switch_tmu_mode mode_request; }; /** @@ -134,7 +127,8 @@ enum tb_clx { * @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_width: Width of the upstream facing link + * @preferred_link_width: Router preferred link width (only set for Gen 4 links) * @link_usb4: Upstream link is USB4 * @generation: Switch Thunderbolt generation * @cap_plug_events: Offset to the plug events capability (%0 if not found) @@ -166,7 +160,8 @@ enum tb_clx { * @min_dp_main_credits: Router preferred minimum number of buffers for DP MAIN * @max_pcie_credits: Router preferred number of buffers for PCIe * @max_dma_credits: Router preferred number of buffers for DMA/P2P - * @clx: CLx state on the upstream link of the router + * @clx: CLx states on the upstream link of the router + * @drom_blob: DROM debugfs blob wrapper * * When the switch is being added or removed to the domain (other * switches) you need to have domain lock held. @@ -187,7 +182,8 @@ struct tb_switch { const char *vendor_name; const char *device_name; unsigned int link_speed; - unsigned int link_width; + enum tb_link_width link_width; + enum tb_link_width preferred_link_width; bool link_usb4; unsigned int generation; int cap_plug_events; @@ -217,7 +213,34 @@ struct tb_switch { unsigned int min_dp_main_credits; unsigned int max_pcie_credits; unsigned int max_dma_credits; - enum tb_clx clx; + unsigned int clx; +#ifdef CONFIG_DEBUG_FS + struct debugfs_blob_wrapper drom_blob; +#endif +}; + +/** + * struct tb_bandwidth_group - Bandwidth management group + * @tb: Pointer to the domain the group belongs to + * @index: Index of the group (aka Group_ID). Valid values %1-%7 + * @ports: DP IN adapters belonging to this group are linked here + * @reserved: Bandwidth released by one tunnel in the group, available + * to others. This is reported as part of estimated_bw for + * the group. + * @release_work: Worker to release the @reserved if it is not used by + * any of the tunnels. + * + * Any tunnel that requires isochronous bandwidth (that's DP for now) is + * attached to a bandwidth group. All tunnels going through the same + * USB4 links share the same group and can dynamically distribute the + * bandwidth within the group. + */ +struct tb_bandwidth_group { + struct tb *tb; + int index; + struct list_head ports; + int reserved; + struct delayed_work release_work; }; /** @@ -244,6 +267,12 @@ struct tb_switch { * @ctl_credits: Buffers reserved for control path * @dma_credits: Number of credits allocated for DMA tunneling for all * DMA paths through this port. + * @group: Bandwidth allocation group the adapter is assigned to. Only + * used for DP IN adapters for now. + * @group_list: The adapter is linked to the group's list of ports through this + * @max_bw: Maximum possible bandwidth through this adapter if set to + * non-zero. + * @redrive: For DP IN, if true the adapter is in redrive mode. * * In USB4 terminology this structure represents an adapter (protocol or * lane adapter). @@ -269,25 +298,33 @@ struct tb_port { unsigned int total_credits; unsigned int ctl_credits; unsigned int dma_credits; + struct tb_bandwidth_group *group; + struct list_head group_list; + unsigned int max_bw; + bool redrive; }; /** * struct usb4_port - USB4 port device * @dev: Device for the port * @port: Pointer to the lane 0 adapter - * @can_offline: Does the port have necessary platform support to moved + * @can_offline: Does the port have necessary platform support to move * it into offline mode and back * @offline: The port is currently in offline mode + * @margining: Pointer to margining structure if enabled */ struct usb4_port { struct device dev; struct tb_port *port; bool can_offline; bool offline; +#ifdef CONFIG_USB4_DEBUGFS_MARGINING + struct tb_margining *margining; +#endif }; /** - * tb_retimer: Thunderbolt retimer + * struct 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 @@ -295,7 +332,9 @@ struct usb4_port { * @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) + * @no_nvm_upgrade: Prevent NVM upgrade of this retimer * @auth_status: Status of last NVM authentication + * @margining: Pointer to margining structure if enabled */ struct tb_retimer { struct device dev; @@ -305,14 +344,18 @@ struct tb_retimer { u32 device; struct tb_port *port; struct tb_nvm *nvm; + bool no_nvm_upgrade; u32 auth_status; +#ifdef CONFIG_USB4_DEBUGFS_MARGINING + struct tb_margining *margining; +#endif }; /** * 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) + * (must be on the same switch as @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 @@ -322,6 +365,7 @@ struct tb_retimer { * the path * @nfc_credits: Number of non-flow controlled buffers allocated for the * @in_port. + * @pm_support: Set path PM packet support bit to 1 (for USB4 v2 routers) * * 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 @@ -342,6 +386,7 @@ struct tb_path_hop { int next_hop_index; unsigned int initial_credits; unsigned int nfc_credits; + bool pm_support; }; /** @@ -416,12 +461,19 @@ struct tb_path { #define TB_WAKE_ON_PCIE BIT(4) #define TB_WAKE_ON_DP BIT(5) +/* CL states */ +#define TB_CL0S BIT(0) +#define TB_CL1 BIT(1) +#define TB_CL2 BIT(2) + /** * struct tb_cm_ops - Connection manager specific operations vector * @driver_ready: Called right after control channel is started. Used by * ICM to send driver ready message to the firmware. * @start: Starts the domain * @stop: Stops the domain + * @deinit: Perform any cleanup after the domain is stopped but before + * it is unregistered. Called without @tb->lock taken. Optional. * @suspend_noirq: Connection manager specific suspend_noirq * @resume_noirq: Connection manager specific resume_noirq * @suspend: Connection manager specific suspend @@ -447,14 +499,15 @@ struct tb_path { * performed. If this returns %-EOPNOTSUPP then the * native USB4 router operation is called. * @usb4_switch_nvm_authenticate_status: Optional callback that the CM - * implementation can be used to - * return status of USB4 NVM_AUTH - * router operation. + * implementation can use to return + * status of USB4 NVM_AUTH router + * operation. */ struct tb_cm_ops { int (*driver_ready)(struct tb *tb); - int (*start)(struct tb *tb); + int (*start)(struct tb *tb, bool reset); void (*stop)(struct tb *tb); + void (*deinit)(struct tb *tb); int (*suspend_noirq)(struct tb *tb); int (*resume_noirq)(struct tb *tb); int (*suspend)(struct tb *tb); @@ -499,13 +552,14 @@ static inline void *tb_priv(struct tb *tb) /** * tb_upstream_port() - return the upstream port of a switch + * @sw: Router * * Every switch has an upstream port (for the root switch it is the NHI). * * During switch alloc/init tb_upstream_port()->remote may be NULL, even for * non root switches (on the NHI port remote is always NULL). * - * Return: Returns the upstream port of the switch. + * Return: Pointer to &struct tb_port. */ static inline struct tb_port *tb_upstream_port(struct tb_switch *sw) { @@ -516,8 +570,8 @@ static inline struct tb_port *tb_upstream_port(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. + * Return: %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) { @@ -540,11 +594,27 @@ static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw) return &sw->ports[port]; } +static inline const char *tb_width_name(enum tb_link_width width) +{ + switch (width) { + case TB_LINK_WIDTH_SINGLE: + return "symmetric, single lane"; + case TB_LINK_WIDTH_DUAL: + return "symmetric, dual lanes"; + case TB_LINK_WIDTH_ASYM_TX: + return "asymmetric, 3 transmitters, 1 receiver"; + case TB_LINK_WIDTH_ASYM_RX: + return "asymmetric, 3 receivers, 1 transmitter"; + default: + return "unknown"; + } +} + /** * 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. + * Return: %true only when the port is primary port and has remote set. */ static inline bool tb_port_has_remote(const struct tb_port *port) { @@ -674,7 +744,7 @@ static inline int tb_port_write(struct tb_port *port, const void *buffer, #define __TB_PORT_PRINT(level, _port, fmt, arg...) \ do { \ const struct tb_port *__port = (_port); \ - level(__port->sw->tb, "%llx:%x: " fmt, \ + level(__port->sw->tb, "%llx:%u: " fmt, \ tb_route(__port->sw), __port->port, ## arg); \ } while (0) #define tb_port_WARN(port, fmt, arg...) \ @@ -689,10 +759,10 @@ static inline int tb_port_write(struct tb_port *port, const void *buffer, 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; -extern struct device_type usb4_port_device_type; +extern const struct device_type tb_domain_type; +extern const struct device_type tb_retimer_type; +extern const struct device_type tb_switch_type; +extern const struct device_type usb4_port_device_type; int tb_domain_init(void); void tb_domain_exit(void); @@ -700,7 +770,7 @@ int tb_xdomain_init(void); void tb_xdomain_exit(void); struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize); -int tb_domain_add(struct tb *tb); +int tb_domain_add(struct tb *tb, bool reset); void tb_domain_remove(struct tb *tb); int tb_domain_suspend_noirq(struct tb *tb); int tb_domain_resume_noirq(struct tb *tb); @@ -735,12 +805,27 @@ static inline void tb_domain_put(struct tb *tb) put_device(&tb->dev); } +/** + * tb_domain_event() - Notify userspace about an event in domain + * @tb: Domain where event occurred + * @envp: Array of uevent environment strings (can be %NULL) + * + * This function provides a way to notify userspace about any events + * that take place in the domain. + */ +static inline void tb_domain_event(struct tb *tb, char *envp[]) +{ + kobject_uevent_env(&tb->dev.kobj, KOBJ_CHANGE, envp); +} + 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_read_version(struct tb_nvm *nvm); +int tb_nvm_validate(struct tb_nvm *nvm); +int tb_nvm_write_headers(struct tb_nvm *nvm); +int tb_nvm_add_active(struct tb_nvm *nvm, 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); +int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write); void tb_nvm_free(struct tb_nvm *nvm); void tb_nvm_exit(void); @@ -754,15 +839,18 @@ int tb_nvm_write_data(unsigned int address, const void *buf, size_t size, unsigned int retries, write_block_fn write_next_block, void *write_block_data); +int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf, + size_t size); struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent, u64 route); struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb, struct device *parent, u64 route); int tb_switch_configure(struct tb_switch *sw); +int tb_switch_configuration_valid(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, bool runtime); -int tb_switch_resume(struct tb_switch *sw); +int tb_switch_resume(struct tb_switch *sw, bool runtime); int tb_switch_reset(struct tb_switch *sw); int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit, u32 value, int timeout_msec); @@ -802,7 +890,7 @@ static inline bool tb_is_switch(const struct device *dev) return dev->type == &tb_switch_type; } -static inline struct tb_switch *tb_to_switch(struct device *dev) +static inline struct tb_switch *tb_to_switch(const struct device *dev) { if (tb_is_switch(dev)) return container_of(dev, struct tb_switch, dev); @@ -814,6 +902,32 @@ static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw) return tb_to_switch(sw->dev.parent); } +/** + * tb_switch_downstream_port() - Return downstream facing port of parent router + * @sw: Device router pointer + * + * Call only for device routers. + * + * Return: Pointer to &struct tb_port or %NULL in case of failure. + */ +static inline struct tb_port *tb_switch_downstream_port(struct tb_switch *sw) +{ + if (WARN_ON(!tb_route(sw))) + return NULL; + return tb_port_at(tb_route(sw), tb_switch_parent(sw)); +} + +/** + * tb_switch_depth() - Returns depth of the connected router + * @sw: Router + * + * Return: Router depth level as a number. + */ +static inline int tb_switch_depth(const struct tb_switch *sw) +{ + return sw->config.depth; +} + static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw) { return sw->config.vendor_id == PCI_VENDOR_ID_INTEL && @@ -855,6 +969,7 @@ 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_4C_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: @@ -892,17 +1007,6 @@ static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw) } /** - * 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 * @@ -910,14 +1014,16 @@ static inline bool tb_switch_is_usb4(const struct tb_switch *sw) * 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). + * + * Return: %true if switch is handled by ICM, %false if handled by + * software CM. */ 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_set_link_width(struct tb_switch *sw, enum tb_link_width width); int tb_switch_configure_link(struct tb_switch *sw); void tb_switch_unconfigure_link(struct tb_switch *sw); @@ -929,64 +1035,66 @@ 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); -void tb_switch_tmu_configure(struct tb_switch *sw, - enum tb_switch_tmu_rate rate, - bool unidirectional); +int tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_mode mode); + /** - * tb_switch_tmu_hifi_is_enabled() - Checks if the specified TMU mode is enabled - * @sw: Router whose TMU mode to check - * @unidirectional: If uni-directional (bi-directional otherwise) + * tb_switch_tmu_is_configured() - Is given TMU mode configured + * @sw: Router whose mode to check + * @mode: Mode to check * - * Return true if hardware TMU configuration matches the one passed in - * as parameter. That is HiFi and either uni-directional or bi-directional. + * Checks if given router TMU mode is configured to @mode. Note the + * router TMU might not be enabled to this mode. + * + * Return: %true if TMU mode is equal to @mode, %false otherwise. */ -static inline bool tb_switch_tmu_hifi_is_enabled(const struct tb_switch *sw, - bool unidirectional) +static inline bool tb_switch_tmu_is_configured(const struct tb_switch *sw, + enum tb_switch_tmu_mode mode) { - return sw->tmu.rate == TB_SWITCH_TMU_RATE_HIFI && - sw->tmu.unidirectional == unidirectional; + return sw->tmu.mode_request == mode; } -int tb_switch_enable_clx(struct tb_switch *sw, enum tb_clx clx); -int tb_switch_disable_clx(struct tb_switch *sw, enum tb_clx clx); - /** - * tb_switch_is_clx_enabled() - Checks if the CLx is enabled - * @sw: Router to check the CLx state for + * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled + * @sw: Router whose TMU mode to check * - * Checks if the CLx is enabled on the router upstream link. - * Not applicable for a host router. + * Return: %true if hardware TMU configuration matches the requested + * configuration (and is not %TB_SWITCH_TMU_MODE_OFF), %false otherwise. */ -static inline bool tb_switch_is_clx_enabled(const struct tb_switch *sw) +static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw) { - return sw->clx != TB_CLX_DISABLE; + return sw->tmu.mode != TB_SWITCH_TMU_MODE_OFF && + sw->tmu.mode == sw->tmu.mode_request; } +bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx); + +int tb_switch_clx_init(struct tb_switch *sw); +int tb_switch_clx_enable(struct tb_switch *sw, unsigned int clx); +int tb_switch_clx_disable(struct tb_switch *sw); + /** - * tb_switch_is_cl0s_enabled() - Checks if the CL0s is enabled - * @sw: Router to check for the CL0s + * tb_switch_clx_is_enabled() - Checks if the CLx is enabled + * @sw: Router to check for the CLx + * @clx: The CLx states to check for + * + * Checks if the specified CLx is enabled on the router upstream link. * - * Checks if the CL0s is enabled on the router upstream link. * Not applicable for a host router. + * + * Return: %true if any of the given states is enabled, %false otherwise. */ -static inline bool tb_switch_is_cl0s_enabled(const struct tb_switch *sw) -{ - return sw->clx == TB_CL0S; -} - -/** - * tb_switch_is_clx_supported() - Is CLx supported on this type of router - * @sw: The router to check CLx support for - */ -static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw) +static inline bool tb_switch_clx_is_enabled(const struct tb_switch *sw, + unsigned int clx) { - return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw); + return sw->clx & clx; } -int tb_switch_mask_clx_objections(struct tb_switch *sw); - int tb_switch_pcie_l1_enable(struct tb_switch *sw); +int tb_switch_xhci_connect(struct tb_switch *sw); +void tb_switch_xhci_disconnect(struct tb_switch *sw); + +int tb_port_state(struct tb_port *port); 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_clear_counter(struct tb_port *port, int counter); @@ -1000,6 +1108,21 @@ 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_port_path_direction_downstream() - Checks if path is directed downstream + * @src: Source adapter + * @dst: Destination adapter + * + * Return: %true only if the specified path from source adapter (@src) + * to destination adapter (@dst) is directed downstream. + */ +static inline bool +tb_port_path_direction_downstream(const struct tb_port *src, + const struct tb_port *dst) +{ + return src->sw->config.depth < dst->sw->config.depth; +} + static inline bool tb_port_use_credit_allocation(const struct tb_port *port) { return tb_port_is_null(port) && port->sw->credit_allocation; @@ -1017,12 +1140,29 @@ static inline bool tb_port_use_credit_allocation(const struct tb_port *port) for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \ (p) = tb_next_port_on_path((src), (dst), (p))) +/** + * tb_for_each_upstream_port_on_path() - Iterate over each upstream port on path + * @src: Source port + * @dst: Destination port + * @p: Port used as iterator + * + * Walks over each upstream lane adapter on path from @src to @dst. + */ +#define tb_for_each_upstream_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))) \ + if (!tb_port_is_null((p)) || !tb_is_upstream_port((p))) {\ + continue; \ + } else + int tb_port_get_link_speed(struct tb_port *port); +int tb_port_get_link_generation(struct tb_port *port); int tb_port_get_link_width(struct tb_port *port); -int tb_port_state(struct tb_port *port); +bool tb_port_width_supported(struct tb_port *port, unsigned int width); +int tb_port_set_link_width(struct tb_port *port, enum tb_link_width width); int tb_port_lane_bonding_enable(struct tb_port *port); void tb_port_lane_bonding_disable(struct tb_port *port); -int tb_port_wait_for_link_width(struct tb_port *port, int width, +int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width, int timeout_msec); int tb_port_update_credits(struct tb_port *port); @@ -1056,6 +1196,7 @@ struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid, void tb_path_free(struct tb_path *path); int tb_path_activate(struct tb_path *path); void tb_path_deactivate(struct tb_path *path); +int tb_path_deactivate_hop(struct tb_port *port, int hop_index); 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); @@ -1075,12 +1216,17 @@ 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_reset_port(struct tb_port *port); 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_start_lane_initialization(struct tb_port *port); bool tb_lc_is_clx_supported(struct tb_port *port); +bool tb_lc_is_usb_plugged(struct tb_port *port); +bool tb_lc_is_xhci_connected(struct tb_port *port); +int tb_lc_xhci_connect(struct tb_port *port); +void tb_lc_xhci_disconnect(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); @@ -1096,10 +1242,11 @@ static inline int tb_route_length(u64 route) /** * tb_downstream_route() - get route to downstream switch + * @port: Port to check * * Port must not be the upstream port (otherwise a loop is created). * - * Return: Returns a route to the switch behind @port. + * Return: Route to the switch behind @port. */ static inline u64 tb_downstream_route(struct tb_port *port) { @@ -1118,6 +1265,24 @@ void tb_xdomain_remove(struct tb_xdomain *xd); struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link, u8 depth); +static inline struct tb_switch *tb_xdomain_parent(struct tb_xdomain *xd) +{ + return tb_to_switch(xd->dev.parent); +} + +/** + * tb_xdomain_downstream_port() - Return downstream facing port of parent router + * @xd: Xdomain pointer + * + * Return: Pointer to &struct tb_port or %NULL in case of failure. + */ +static inline struct tb_port *tb_xdomain_downstream_port(struct tb_xdomain *xd) +{ + return tb_port_at(xd->route, tb_xdomain_parent(xd)); +} + +int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf, + size_t size); int tb_retimer_scan(struct tb_port *port, bool add); void tb_retimer_remove_all(struct tb_port *port); @@ -1133,12 +1298,37 @@ static inline struct tb_retimer *tb_to_retimer(struct device *dev) return NULL; } +/** + * usb4_switch_version() - Returns USB4 version of the router + * @sw: Router to check + * + * Return: Major version of USB4 router (%1 for v1, %2 for v2 and so + * on). Can be called to pre-USB4 router too and in that case returns %0. + */ +static inline unsigned int usb4_switch_version(const struct tb_switch *sw) +{ + return FIELD_GET(USB4_VERSION_MAJOR_MASK, sw->config.thunderbolt_version); +} + +/** + * tb_switch_is_usb4() - Is the switch USB4 compliant + * @sw: Switch to check + * + * Return: %true if the @sw is USB4 compliant router, %false otherwise. + */ +static inline bool tb_switch_is_usb4(const struct tb_switch *sw) +{ + return usb4_switch_version(sw) > 0; +} + +void usb4_switch_check_wakes(struct tb_switch *sw); int usb4_switch_setup(struct tb_switch *sw); +int usb4_switch_configuration_valid(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_wake(struct tb_switch *sw, unsigned int flags, bool runtime); 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, @@ -1160,21 +1350,97 @@ int usb4_switch_add_ports(struct tb_switch *sw); void usb4_switch_remove_ports(struct tb_switch *sw); int usb4_port_unlock(struct tb_port *port); +int usb4_port_hotplug_enable(struct tb_port *port); +int usb4_port_reset(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); +int usb4_port_configure_xdomain(struct tb_port *port, struct tb_xdomain *xd); void usb4_port_unconfigure_xdomain(struct tb_port *port); int usb4_port_router_offline(struct tb_port *port); int usb4_port_router_online(struct tb_port *port); int usb4_port_enumerate_retimers(struct tb_port *port); bool usb4_port_clx_supported(struct tb_port *port); +bool usb4_port_asym_supported(struct tb_port *port); +int usb4_port_asym_set_link_width(struct tb_port *port, enum tb_link_width width); +int usb4_port_asym_start(struct tb_port *port); + +/** + * enum usb4_sb_target - Sideband transaction target + * @USB4_SB_TARGET_ROUTER: Target is the router itself + * @USB4_SB_TARGET_PARTNER: Target is partner + * @USB4_SB_TARGET_RETIMER: Target is retimer + */ +enum usb4_sb_target { + USB4_SB_TARGET_ROUTER, + USB4_SB_TARGET_PARTNER, + USB4_SB_TARGET_RETIMER, +}; + +int usb4_port_sb_read(struct tb_port *port, enum usb4_sb_target target, u8 index, + u8 reg, void *buf, u8 size); +int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target, + u8 index, u8 reg, const void *buf, u8 size); + +/** + * enum usb4_margin_sw_error_counter - Software margining error counter operation + * @USB4_MARGIN_SW_ERROR_COUNTER_NOP: No change in counter setup + * @USB4_MARGIN_SW_ERROR_COUNTER_CLEAR: Set the error counter to 0, enable counter + * @USB4_MARGIN_SW_ERROR_COUNTER_START: Start counter, count from last value + * @USB4_MARGIN_SW_ERROR_COUNTER_STOP: Stop counter, do not clear value + */ +enum usb4_margin_sw_error_counter { + USB4_MARGIN_SW_ERROR_COUNTER_NOP, + USB4_MARGIN_SW_ERROR_COUNTER_CLEAR, + USB4_MARGIN_SW_ERROR_COUNTER_START, + USB4_MARGIN_SW_ERROR_COUNTER_STOP, +}; + +enum usb4_margining_lane { + USB4_MARGINING_LANE_RX0 = 0, + USB4_MARGINING_LANE_RX1 = 1, + USB4_MARGINING_LANE_RX2 = 2, + USB4_MARGINING_LANE_ALL = 7, +}; + +/** + * struct usb4_port_margining_params - USB4 margining parameters + * @error_counter: Error counter operation for software margining + * @ber_level: Current BER level contour value + * @lanes: Lanes to enable for the margining operation + * @voltage_time_offset: Offset for voltage / time for software margining + * @optional_voltage_offset_range: Enable optional extended voltage range + * @right_high: %false if left/low margin test is performed, %true if right/high + * @upper_eye: %true if margin test is done on upper eye, %false if done on + * lower eye + * @time: %true if time margining is used instead of voltage + */ +struct usb4_port_margining_params { + enum usb4_margin_sw_error_counter error_counter; + u32 ber_level; + enum usb4_margining_lane lanes; + u32 voltage_time_offset; + bool optional_voltage_offset_range; + bool right_high; + bool upper_eye; + bool time; +}; + +int usb4_port_margining_caps(struct tb_port *port, enum usb4_sb_target target, + u8 index, u32 *caps, size_t ncaps); +int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, + u8 index, const struct usb4_port_margining_params *params, + u32 *results, size_t nresults); +int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, + u8 index, const struct usb4_port_margining_params *params, + u32 *results); +int usb4_port_sw_margin_errors(struct tb_port *port, enum usb4_sb_target target, + u8 index, u32 *errors); + int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index); -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_unset_inbound_sbtx(struct tb_port *port, u8 index); int usb4_port_retimer_is_last(struct tb_port *port, u8 index); +int usb4_port_retimer_is_cable(struct tb_port *port, u8 index); int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index); int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index, unsigned int address); @@ -1188,7 +1454,6 @@ 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, @@ -1196,6 +1461,24 @@ int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw, int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw, int *downstream_bw); +int usb4_dp_port_set_cm_id(struct tb_port *port, int cm_id); +bool usb4_dp_port_bandwidth_mode_supported(struct tb_port *port); +bool usb4_dp_port_bandwidth_mode_enabled(struct tb_port *port); +int usb4_dp_port_set_cm_bandwidth_mode_supported(struct tb_port *port, + bool supported); +int usb4_dp_port_group_id(struct tb_port *port); +int usb4_dp_port_set_group_id(struct tb_port *port, int group_id); +int usb4_dp_port_nrd(struct tb_port *port, int *rate, int *lanes); +int usb4_dp_port_set_nrd(struct tb_port *port, int rate, int lanes); +int usb4_dp_port_granularity(struct tb_port *port); +int usb4_dp_port_set_granularity(struct tb_port *port, int granularity); +int usb4_dp_port_set_estimated_bandwidth(struct tb_port *port, int bw); +int usb4_dp_port_allocated_bandwidth(struct tb_port *port); +int usb4_dp_port_allocate_bandwidth(struct tb_port *port, int bw); +int usb4_dp_port_requested_bandwidth(struct tb_port *port); + +int usb4_pci_port_set_ext_encapsulation(struct tb_port *port, bool enable); + static inline bool tb_is_usb4_port_device(const struct device *dev) { return dev->type == &usb4_port_device_type; @@ -1211,14 +1494,17 @@ static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev) struct usb4_port *usb4_port_device_add(struct tb_port *port); void usb4_port_device_remove(struct usb4_port *usb4); int usb4_port_device_resume(struct usb4_port *usb4); +int usb4_port_index(const struct tb_switch *sw, const struct tb_port *port); -/* Keep link controller awake during update */ -#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0) +static inline bool usb4_port_device_is_offline(const struct usb4_port *usb4) +{ + return usb4->offline; +} void tb_check_quirks(struct tb_switch *sw); #ifdef CONFIG_ACPI -void tb_acpi_add_links(struct tb_nhi *nhi); +bool tb_acpi_add_links(struct tb_nhi *nhi); bool tb_acpi_is_native(void); bool tb_acpi_may_tunnel_usb3(void); @@ -1231,7 +1517,7 @@ void tb_acpi_exit(void); int tb_acpi_power_on_retimers(struct tb_port *port); int tb_acpi_power_off_retimers(struct tb_port *port); #else -static inline void tb_acpi_add_links(struct tb_nhi *nhi) { } +static inline bool tb_acpi_add_links(struct tb_nhi *nhi) { return false; } static inline bool tb_acpi_is_native(void) { return true; } static inline bool tb_acpi_may_tunnel_usb3(void) { return true; } @@ -1250,23 +1536,23 @@ 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); +void tb_xdomain_debugfs_init(struct tb_xdomain *xd); +void tb_xdomain_debugfs_remove(struct tb_xdomain *xd); void tb_service_debugfs_init(struct tb_service *svc); void tb_service_debugfs_remove(struct tb_service *svc); +void tb_retimer_debugfs_init(struct tb_retimer *rt); +void tb_retimer_debugfs_remove(struct tb_retimer *rt); #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) { } +static inline void tb_xdomain_debugfs_init(struct tb_xdomain *xd) { } +static inline void tb_xdomain_debugfs_remove(struct tb_xdomain *xd) { } static inline void tb_service_debugfs_init(struct tb_service *svc) { } static inline void tb_service_debugfs_remove(struct tb_service *svc) { } -#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) { } +static inline void tb_retimer_debugfs_init(struct tb_retimer *rt) { } +static inline void tb_retimer_debugfs_remove(struct tb_retimer *rt) { } #endif #endif |