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This makes it possible to read and write USB4 port and retimer sideband registers through debugfs which is useful for debugging and manufacturing purposes. We add "sb_regs" debugfs attribute under each USB4 port and retimer that is used to access the sideband. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
103 lines
4.0 KiB
C
103 lines
4.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* USB4 port sideband registers found on routers and retimers
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*
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* Copyright (C) 2020, Intel Corporation
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* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
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* Rajmohan Mani <rajmohan.mani@intel.com>
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*/
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#ifndef _SB_REGS
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#define _SB_REGS
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#define USB4_SB_VENDOR_ID 0x00
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#define USB4_SB_PRODUCT_ID 0x01
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#define USB4_SB_FW_VERSION 0x02
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#define USB4_SB_DEBUG_CONF 0x05
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#define USB4_SB_DEBUG 0x06
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#define USB4_SB_LRD_TUNING 0x07
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#define USB4_SB_OPCODE 0x08
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enum usb4_sb_opcode {
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USB4_SB_OPCODE_ERR = 0x20525245, /* "ERR " */
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USB4_SB_OPCODE_ONS = 0x444d4321, /* "!CMD" */
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USB4_SB_OPCODE_ROUTER_OFFLINE = 0x4e45534c, /* "LSEN" */
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USB4_SB_OPCODE_ENUMERATE_RETIMERS = 0x4d554e45, /* "ENUM" */
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USB4_SB_OPCODE_SET_INBOUND_SBTX = 0x5055534c, /* "LSUP" */
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USB4_SB_OPCODE_UNSET_INBOUND_SBTX = 0x50555355, /* "USUP" */
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USB4_SB_OPCODE_QUERY_LAST_RETIMER = 0x5453414c, /* "LAST" */
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USB4_SB_OPCODE_GET_NVM_SECTOR_SIZE = 0x53534e47, /* "GNSS" */
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USB4_SB_OPCODE_NVM_SET_OFFSET = 0x53504f42, /* "BOPS" */
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USB4_SB_OPCODE_NVM_BLOCK_WRITE = 0x574b4c42, /* "BLKW" */
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USB4_SB_OPCODE_NVM_AUTH_WRITE = 0x48545541, /* "AUTH" */
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USB4_SB_OPCODE_NVM_READ = 0x52524641, /* "AFRR" */
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USB4_SB_OPCODE_READ_LANE_MARGINING_CAP = 0x50434452, /* "RDCP" */
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USB4_SB_OPCODE_RUN_HW_LANE_MARGINING = 0x474d4852, /* "RHMG" */
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USB4_SB_OPCODE_RUN_SW_LANE_MARGINING = 0x474d5352, /* "RSMG" */
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USB4_SB_OPCODE_READ_SW_MARGIN_ERR = 0x57534452, /* "RDSW" */
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};
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#define USB4_SB_METADATA 0x09
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#define USB4_SB_METADATA_NVM_AUTH_WRITE_MASK GENMASK(5, 0)
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#define USB4_SB_LINK_CONF 0x0c
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#define USB4_SB_GEN23_TXFFE 0x0d
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#define USB4_SB_GEN4_TXFFE 0x0e
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#define USB4_SB_VERSION 0x0f
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#define USB4_SB_DATA 0x12
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/* USB4_SB_OPCODE_READ_LANE_MARGINING_CAP */
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#define USB4_MARGIN_CAP_0_MODES_HW BIT(0)
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#define USB4_MARGIN_CAP_0_MODES_SW BIT(1)
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#define USB4_MARGIN_CAP_0_2_LANES BIT(2)
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#define USB4_MARGIN_CAP_0_VOLTAGE_INDP_MASK GENMASK(4, 3)
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#define USB4_MARGIN_CAP_0_VOLTAGE_INDP_SHIFT 3
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#define USB4_MARGIN_CAP_0_VOLTAGE_MIN 0x0
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#define USB4_MARGIN_CAP_0_VOLTAGE_HL 0x1
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#define USB4_MARGIN_CAP_0_VOLTAGE_BOTH 0x2
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#define USB4_MARGIN_CAP_0_TIME BIT(5)
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#define USB4_MARGIN_CAP_0_VOLTAGE_STEPS_MASK GENMASK(12, 6)
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#define USB4_MARGIN_CAP_0_VOLTAGE_STEPS_SHIFT 6
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#define USB4_MARGIN_CAP_0_MAX_VOLTAGE_OFFSET_MASK GENMASK(18, 13)
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#define USB4_MARGIN_CAP_0_MAX_VOLTAGE_OFFSET_SHIFT 13
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#define USB4_MARGIN_CAP_1_TIME_DESTR BIT(8)
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#define USB4_MARGIN_CAP_1_TIME_INDP_MASK GENMASK(10, 9)
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#define USB4_MARGIN_CAP_1_TIME_INDP_SHIFT 9
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#define USB4_MARGIN_CAP_1_TIME_MIN 0x0
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#define USB4_MARGIN_CAP_1_TIME_LR 0x1
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#define USB4_MARGIN_CAP_1_TIME_BOTH 0x2
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#define USB4_MARGIN_CAP_1_TIME_STEPS_MASK GENMASK(15, 11)
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#define USB4_MARGIN_CAP_1_TIME_STEPS_SHIFT 11
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#define USB4_MARGIN_CAP_1_TIME_OFFSET_MASK GENMASK(20, 16)
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#define USB4_MARGIN_CAP_1_TIME_OFFSET_SHIFT 16
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#define USB4_MARGIN_CAP_1_MIN_BER_MASK GENMASK(25, 21)
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#define USB4_MARGIN_CAP_1_MIN_BER_SHIFT 21
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#define USB4_MARGIN_CAP_1_MAX_BER_MASK GENMASK(30, 26)
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#define USB4_MARGIN_CAP_1_MAX_BER_SHIFT 26
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#define USB4_MARGIN_CAP_1_MAX_BER_SHIFT 26
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/* USB4_SB_OPCODE_RUN_HW_LANE_MARGINING */
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#define USB4_MARGIN_HW_TIME BIT(3)
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#define USB4_MARGIN_HW_RH BIT(4)
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#define USB4_MARGIN_HW_BER_MASK GENMASK(9, 5)
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#define USB4_MARGIN_HW_BER_SHIFT 5
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/* Applicable to all margin values */
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#define USB4_MARGIN_HW_RES_1_MARGIN_MASK GENMASK(6, 0)
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#define USB4_MARGIN_HW_RES_1_EXCEEDS BIT(7)
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/* Different lane margin shifts */
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#define USB4_MARGIN_HW_RES_1_L0_LL_MARGIN_SHIFT 8
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#define USB4_MARGIN_HW_RES_1_L1_RH_MARGIN_SHIFT 16
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#define USB4_MARGIN_HW_RES_1_L1_LL_MARGIN_SHIFT 24
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/* USB4_SB_OPCODE_RUN_SW_LANE_MARGINING */
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#define USB4_MARGIN_SW_TIME BIT(3)
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#define USB4_MARGIN_SW_RH BIT(4)
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#define USB4_MARGIN_SW_COUNTER_MASK GENMASK(14, 13)
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#define USB4_MARGIN_SW_COUNTER_SHIFT 13
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#define USB4_MARGIN_SW_COUNTER_NOP 0x0
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#define USB4_MARGIN_SW_COUNTER_CLEAR 0x1
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#define USB4_MARGIN_SW_COUNTER_START 0x2
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#define USB4_MARGIN_SW_COUNTER_STOP 0x3
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#endif
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