linux/drivers/thunderbolt/sb_regs.h
Rajmohan Mani 3406de7cc2 thunderbolt: Add additional USB4 port operations for retimer access
When accessing retimers when there is no cable connected we are going to
need additional USB4 port operations. First the port needs to be put
into offline mode, and then the sideband channel transactions must be
enabled on the SBTX line. This adds support for these operations.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00

36 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* USB4 port sideband registers found on routers and retimers
*
* Copyright (C) 2020, Intel Corporation
* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
* Rajmohan Mani <rajmohan.mani@intel.com>
*/
#ifndef _SB_REGS
#define _SB_REGS
#define USB4_SB_VENDOR_ID 0x00
#define USB4_SB_PRODUCT_ID 0x01
#define USB4_SB_OPCODE 0x08
enum usb4_sb_opcode {
USB4_SB_OPCODE_ERR = 0x20525245, /* "ERR " */
USB4_SB_OPCODE_ONS = 0x444d4321, /* "!CMD" */
USB4_SB_OPCODE_ROUTER_OFFLINE = 0x4e45534c, /* "LSEN" */
USB4_SB_OPCODE_ENUMERATE_RETIMERS = 0x4d554e45, /* "ENUM" */
USB4_SB_OPCODE_SET_INBOUND_SBTX = 0x5055534c, /* "LSUP" */
USB4_SB_OPCODE_QUERY_LAST_RETIMER = 0x5453414c, /* "LAST" */
USB4_SB_OPCODE_GET_NVM_SECTOR_SIZE = 0x53534e47, /* "GNSS" */
USB4_SB_OPCODE_NVM_SET_OFFSET = 0x53504f42, /* "BOPS" */
USB4_SB_OPCODE_NVM_BLOCK_WRITE = 0x574b4c42, /* "BLKW" */
USB4_SB_OPCODE_NVM_AUTH_WRITE = 0x48545541, /* "AUTH" */
USB4_SB_OPCODE_NVM_READ = 0x52524641, /* "AFRR" */
};
#define USB4_SB_METADATA 0x09
#define USB4_SB_METADATA_NVM_AUTH_WRITE_MASK GENMASK(5, 0)
#define USB4_SB_DATA 0x12
#endif