diff options
| author | Rajmohan Mani <rajmohan.mani@intel.com> | 2019-12-17 15:33:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-18 17:41:40 +0300 |
| commit | e6f818585713efb29d54f732f41291f75046a2c7 (patch) | |
| tree | 4cb06c58eb46b15670c98dbfa2f5160bd92f222d /drivers/thunderbolt/tb.h | |
| parent | cf29b9afb121494a7aa12dae6eebf81347e0313b (diff) | |
| download | linux-e6f818585713efb29d54f732f41291f75046a2c7.tar.xz | |
thunderbolt: Add support for USB 3.x tunnels
USB4 added a capability to tunnel USB 3.x protocol over the USB4
fabric. USB4 device routers may include integrated SuperSpeed HUB or a
function or both. USB tunneling follows PCIe so that the tunnel is
created between the parent and the child router from USB3 downstream
adapter port to USB3 upstream adapter port over a single USB4 link.
This adds support for USB 3.x tunneling and also capability to discover
existing USB 3.x tunnels (for example created by connection manager in
boot firmware).
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20191217123345.31850-9-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 63ffb3cbdefe..2eb2bcd3cca3 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -432,6 +432,16 @@ static inline bool tb_port_is_dpout(const struct tb_port *port) return port && port->config.type == TB_TYPE_DP_HDMI_OUT; } +static inline bool tb_port_is_usb3_down(const struct tb_port *port) +{ + return port && port->config.type == TB_TYPE_USB3_DOWN; +} + +static inline bool tb_port_is_usb3_up(const struct tb_port *port) +{ + return port && port->config.type == TB_TYPE_USB3_UP; +} + static inline int tb_sw_read(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { @@ -736,6 +746,9 @@ int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap); int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap); bool tb_port_is_enabled(struct tb_port *port); +bool tb_usb3_port_is_enabled(struct tb_port *port); +int tb_usb3_port_enable(struct tb_port *port, bool enable); + bool tb_pci_port_is_enabled(struct tb_port *port); int tb_pci_port_enable(struct tb_port *port, bool enable); @@ -818,6 +831,8 @@ 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); 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_port_unlock(struct tb_port *port); #endif |