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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-11-03 13:58:00 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-11-30 14:39:24 +0300 |
| commit | 9490f71167feba55349e33854f5e51a1a3af9e8c (patch) | |
| tree | a8233d3f9683459231be19c5c4fb579f27eac1a5 /drivers/thunderbolt/tb.h | |
| parent | 83bab44ada0512b054844e661279d68d0c8f3d03 (diff) | |
| download | lwn-9490f71167feba55349e33854f5e51a1a3af9e8c.tar.gz lwn-9490f71167feba55349e33854f5e51a1a3af9e8c.zip | |
thunderbolt: Add connection manager specific hooks for USB4 router operations
Intel USB4 host routers that run the firmware based connection manager
(ICM) may implement a proxy for USB4 router operations. This is to avoid
the firmware to race with the OS driver, as both may need to run these
operations.
This adds two new connection manager specific callbacks which, if
provided, get called instead of the native USB4 router operation.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 3885f2515aae..d19dbc8e9457 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -367,6 +367,14 @@ struct tb_path { * @disconnect_pcie_paths: Disconnects PCIe paths before NVM update * @approve_xdomain_paths: Approve (establish) XDomain DMA paths * @disconnect_xdomain_paths: Disconnect XDomain DMA paths + * @usb4_switch_op: Optional proxy for USB4 router operations. If set + * this will be called whenever USB4 router operation is + * performed. If this returns %-EOPNOTSUPP then the + * native USB4 router operation is called. + * @usb4_switch_nvm_authenticate_status: Optional callback that the CM + * implementation can be used to + * return status of USB4 NVM_AUTH + * router operation. */ struct tb_cm_ops { int (*driver_ready)(struct tb *tb); @@ -393,6 +401,11 @@ struct tb_cm_ops { int (*disconnect_pcie_paths)(struct tb *tb); int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd); int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd); + int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata, + u8 *status, const void *tx_data, size_t tx_data_len, + void *rx_data, size_t rx_data_len); + int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw, + u32 *status); }; static inline void *tb_priv(struct tb *tb) |