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| author |  Mika Westerberg <mika.westerberg@linux.intel.com>
| 2020-02-21 23:14:41 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com>
| 2020-06-22 19:58:20 +0300 |
| commit | 3b1d8d577ca8d0619c88ac76a943aa4ce11a3027 (patch) | |
| tree | b5fb6f75f02189aeb64cf27bba81fe926722f97d /drivers/thunderbolt/tb.h | |
| parent | thunderbolt: Increase DP DPRX wait timeout (diff) | |
| download | linux-3b1d8d577ca8d0619c88ac76a943aa4ce11a3027.tar.gz linux-3b1d8d577ca8d0619c88ac76a943aa4ce11a3027.tar.bz2 linux-3b1d8d577ca8d0619c88ac76a943aa4ce11a3027.zip | |
thunderbolt: Implement USB3 bandwidth negotiation routines
Each host router USB3 downstream adapter has a set of registers that are
used to negotiate bandwidth between the connection manager and the
internal xHCI controller. These registers allow dynamic bandwidth
management for USB3 isochronous traffic based on what is actually
consumed vs. allocated at any given time.
Implement these USB3 bandwidth negotiation routines to allow the
software connection manager take advantage of these.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index de8124949eaf..cb53a94fe4f8 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -853,4 +853,13 @@ 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_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); #endif |