diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index e6c5e8fc7de7..a8190009815c 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -136,6 +136,12 @@ 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. @@ -178,6 +184,12 @@ 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; }; /** @@ -199,6 +211,8 @@ 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 * * In USB4 terminology this structure represents an adapter (protocol or * lane adapter). @@ -220,6 +234,8 @@ struct tb_port { struct ida in_hopids; struct ida out_hopids; struct list_head list; + unsigned int total_credits; + unsigned int ctl_credits; }; /** @@ -866,6 +882,11 @@ 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 @@ -994,6 +1015,7 @@ 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); |