Hi all, USB4 spec requires that routers expose their credit (buffer) allocation preferences through a special router operation. Furthermore the Connection Manager guide (as part of the USB4 spec bundle) provides some guidance how the credits should be allocated between different tunneled protocols. This series adds the credit allocation support for USB4 routers. For Intel Thunderbolt 1-3 devices we keep using the existing hard-coded scheme. We also add some KUnit tests for the credit allocation. Mika Westerberg (8): thunderbolt: Make tb_port_type() take const parameter thunderbolt: Move nfc_credits field to struct tb_path_hop thunderbolt: Wait for the lanes to actually bond thunderbolt: Read router preferred credit allocation information thunderbolt: Update port credits after bonding is enabled/disabled thunderbolt: Allocate credits according to router preferences thunderbolt: Add quirk for Intel Goshen Ridge DP credits thunderbolt: Add KUnit tests for credit allocation drivers/thunderbolt/path.c | 4 +- drivers/thunderbolt/quirks.c | 29 +- drivers/thunderbolt/switch.c | 151 +++++++++- drivers/thunderbolt/tb.h | 44 ++- drivers/thunderbolt/tb_regs.h | 1 + drivers/thunderbolt/test.c | 545 ++++++++++++++++++++++++++++++++++ drivers/thunderbolt/tunnel.c | 401 ++++++++++++++++++++----- drivers/thunderbolt/tunnel.h | 2 + drivers/thunderbolt/usb4.c | 155 ++++++++++ drivers/thunderbolt/xdomain.c | 10 + 10 files changed, 1253 insertions(+), 89 deletions(-) -- 2.30.2
