summaryrefslogtreecommitdiff
path: root/drivers/thunderbolt/tb.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/thunderbolt/tb.h')
-rw-r--r--drivers/thunderbolt/tb.h116
1 files changed, 113 insertions, 3 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 9790e9f13d2b..725104c83e3d 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -20,6 +20,7 @@
#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
@@ -57,6 +58,12 @@ struct tb_nvm {
bool flushed;
};
+enum tb_nvm_write_ops {
+ WRITE_AND_AUTHENTICATE = 1,
+ WRITE_ONLY = 2,
+ AUTHENTICATE_ONLY = 3,
+};
+
#define TB_SWITCH_KEY_SIZE 32
#define TB_SWITCH_MAX_DEPTH 6
#define USB4_SWITCH_MAX_DEPTH 5
@@ -135,6 +142,12 @@ struct tb_switch_tmu {
* @rpm_complete: Completion used to wait for runtime resume to
* complete (ICM only)
* @quirks: Quirks used for this Thunderbolt switch
+ * @credit_allocation: Are the below buffer allocation parameters valid
+ * @max_usb3_credits: Router preferred number of buffers for USB 3.x
+ * @min_dp_aux_credits: Router preferred minimum number of buffers for DP AUX
+ * @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
*
* When the switch is being added or removed to the domain (other
* switches) you need to have domain lock held.
@@ -177,6 +190,12 @@ struct tb_switch {
u8 depth;
struct completion rpm_complete;
unsigned long quirks;
+ bool credit_allocation;
+ unsigned int max_usb3_credits;
+ unsigned int min_dp_aux_credits;
+ unsigned int min_dp_main_credits;
+ unsigned int max_pcie_credits;
+ unsigned int max_dma_credits;
};
/**
@@ -189,6 +208,7 @@ struct tb_switch {
* @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)
+ * @usb4: Pointer to the USB4 port structure (only if @cap_usb4 is != %0)
* @port: Port number on switch
* @disabled: Disabled by eeprom or enabled but not implemented
* @bonded: true if the port is bonded (two lanes combined as one)
@@ -198,6 +218,10 @@ struct tb_switch {
* @in_hopids: Currently allocated input HopIDs
* @out_hopids: Currently allocated output HopIDs
* @list: Used to link ports to DP resources list
+ * @total_credits: Total number of buffers available for this port
+ * @ctl_credits: Buffers reserved for control path
+ * @dma_credits: Number of credits allocated for DMA tunneling for all
+ * DMA paths through this port.
*
* In USB4 terminology this structure represents an adapter (protocol or
* lane adapter).
@@ -211,6 +235,7 @@ struct tb_port {
int cap_tmu;
int cap_adap;
int cap_usb4;
+ struct usb4_port *usb4;
u8 port;
bool disabled;
bool bonded;
@@ -219,6 +244,24 @@ struct tb_port {
struct ida in_hopids;
struct ida out_hopids;
struct list_head list;
+ unsigned int total_credits;
+ unsigned int ctl_credits;
+ unsigned int dma_credits;
+};
+
+/**
+ * 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
+ * it into offline mode and back
+ * @offline: The port is currently in offline mode
+ */
+struct usb4_port {
+ struct device dev;
+ struct tb_port *port;
+ bool can_offline;
+ bool offline;
};
/**
@@ -255,6 +298,8 @@ struct tb_retimer {
* @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
+ * @nfc_credits: Number of non-flow controlled buffers allocated for the
+ * @in_port.
*
* 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
@@ -274,6 +319,7 @@ struct tb_path_hop {
int in_counter_index;
int next_hop_index;
unsigned int initial_credits;
+ unsigned int nfc_credits;
};
/**
@@ -296,7 +342,6 @@ enum tb_path_port {
* 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
@@ -317,7 +362,6 @@ enum tb_path_port {
struct tb_path {
struct tb *tb;
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;
@@ -346,6 +390,7 @@ struct tb_path {
#define TB_WAKE_ON_USB4 BIT(2)
#define TB_WAKE_ON_USB3 BIT(3)
#define TB_WAKE_ON_PCIE BIT(4)
+#define TB_WAKE_ON_DP BIT(5)
/**
* struct tb_cm_ops - Connection manager specific operations vector
@@ -623,6 +668,7 @@ 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;
int tb_domain_init(void);
void tb_domain_exit(void);
@@ -674,6 +720,16 @@ int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size,
void tb_nvm_free(struct tb_nvm *nvm);
void tb_nvm_exit(void);
+typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
+typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t);
+
+int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
+ unsigned int retries, read_block_fn read_block,
+ void *read_block_data);
+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);
+
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,
@@ -853,6 +909,11 @@ 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);
+static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
+{
+ return tb_port_is_null(port) && port->sw->credit_allocation;
+}
+
/**
* tb_for_each_port_on_path() - Iterate over each port on path
* @src: Source port
@@ -870,6 +931,9 @@ int tb_port_get_link_width(struct tb_port *port);
int tb_port_state(struct tb_port *port);
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 timeout_msec);
+int tb_port_update_credits(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);
@@ -904,6 +968,17 @@ 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);
+/**
+ * tb_path_for_each_hop() - Iterate over each hop on path
+ * @path: Path whose hops to iterate
+ * @hop: Hop used as iterator
+ *
+ * Iterates over each hop on path.
+ */
+#define tb_path_for_each_hop(path, hop) \
+ for ((hop) = &(path)->hops[0]; \
+ (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
+
int tb_drom_read(struct tb_switch *sw);
int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
@@ -950,7 +1025,7 @@ void tb_xdomain_remove(struct tb_xdomain *xd);
struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
-int tb_retimer_scan(struct tb_port *port);
+int tb_retimer_scan(struct tb_port *port, bool add);
void tb_retimer_remove_all(struct tb_port *port);
static inline bool tb_is_retimer(const struct device *dev)
@@ -975,10 +1050,12 @@ 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_set_offset(struct tb_switch *sw, unsigned int address);
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);
int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
+int usb4_switch_credits_init(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);
@@ -986,20 +1063,27 @@ 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_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_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_router_offline(struct tb_port *port);
+int usb4_port_router_online(struct tb_port *port);
int usb4_port_enumerate_retimers(struct tb_port *port);
+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_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_set_offset(struct tb_port *port, u8 index,
+ unsigned int address);
int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
unsigned int address, const void *buf,
size_t size);
@@ -1018,6 +1102,22 @@ 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);
+static inline bool tb_is_usb4_port_device(const struct device *dev)
+{
+ return dev->type == &usb4_port_device_type;
+}
+
+static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
+{
+ if (tb_is_usb4_port_device(dev))
+ return container_of(dev, struct usb4_port, dev);
+ return NULL;
+}
+
+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);
+
/* Keep link controller awake during update */
#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
@@ -1031,6 +1131,11 @@ bool tb_acpi_may_tunnel_usb3(void);
bool tb_acpi_may_tunnel_dp(void);
bool tb_acpi_may_tunnel_pcie(void);
bool tb_acpi_is_xdomain_allowed(void);
+
+int tb_acpi_init(void);
+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) { }
@@ -1039,6 +1144,11 @@ static inline bool tb_acpi_may_tunnel_usb3(void) { return true; }
static inline bool tb_acpi_may_tunnel_dp(void) { return true; }
static inline bool tb_acpi_may_tunnel_pcie(void) { return true; }
static inline bool tb_acpi_is_xdomain_allowed(void) { return true; }
+
+static inline int tb_acpi_init(void) { return 0; }
+static inline void tb_acpi_exit(void) { }
+static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0; }
+static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0; }
#endif
#ifdef CONFIG_DEBUG_FS