drivers/thunderbolt/sb_regs.h

Source file repositories/reference/linux-study-clean/drivers/thunderbolt/sb_regs.h

File Facts

System
Linux kernel
Corpus path
drivers/thunderbolt/sb_regs.h
Extension
.h
Size
4574 bytes
Lines
113
Domain
Driver Families
Bucket
drivers/thunderbolt
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _SB_REGS
#define _SB_REGS

#define USB4_SB_VENDOR_ID			0x00
#define USB4_SB_PRODUCT_ID			0x01
#define USB4_SB_FW_VERSION			0x02
#define USB4_SB_DEBUG_CONF			0x05
#define USB4_SB_DEBUG				0x06
#define USB4_SB_LRD_TUNING			0x07
#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_UNSET_INBOUND_SBTX = 0x50555355,		/* "USUP" */
	USB4_SB_OPCODE_QUERY_LAST_RETIMER = 0x5453414c,		/* "LAST" */
	USB4_SB_OPCODE_QUERY_CABLE_RETIMER = 0x524c4243,	/* "CBLR" */
	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" */
	USB4_SB_OPCODE_READ_LANE_MARGINING_CAP = 0x50434452,	/* "RDCP" */
	USB4_SB_OPCODE_RUN_HW_LANE_MARGINING = 0x474d4852,	/* "RHMG" */
	USB4_SB_OPCODE_RUN_SW_LANE_MARGINING = 0x474d5352,	/* "RSMG" */
	USB4_SB_OPCODE_READ_SW_MARGIN_ERR = 0x57534452,		/* "RDSW" */
};

#define USB4_SB_METADATA			0x09
#define USB4_SB_METADATA_NVM_AUTH_WRITE_MASK	GENMASK(5, 0)
#define USB4_SB_LINK_CONF			0x0c
#define USB4_SB_GEN23_TXFFE			0x0d
#define USB4_SB_GEN4_TXFFE			0x0e
#define USB4_SB_VERSION				0x0f
#define USB4_SB_DATA				0x12

/* USB4_SB_OPCODE_READ_LANE_MARGINING_CAP */
#define USB4_MARGIN_CAP_0_MODES_HW		BIT(0)
#define USB4_MARGIN_CAP_0_MODES_SW		BIT(1)
#define USB4_MARGIN_CAP_0_ALL_LANES		BIT(2)
#define USB4_MARGIN_CAP_0_VOLTAGE_INDP_MASK	GENMASK(4, 3)
#define USB4_MARGIN_CAP_0_VOLTAGE_MIN		0x0
#define USB4_MARGIN_CAP_0_VOLTAGE_HL		0x1
#define USB4_MARGIN_CAP_0_VOLTAGE_BOTH		0x2
#define USB4_MARGIN_CAP_0_TIME			BIT(5)
#define USB4_MARGIN_CAP_0_VOLTAGE_STEPS_MASK	GENMASK(12, 6)
#define USB4_MARGIN_CAP_0_MAX_VOLTAGE_OFFSET_MASK GENMASK(18, 13)
#define USB4_MARGIN_CAP_0_OPT_VOLTAGE_SUPPORT	BIT(19)
#define USB4_MARGIN_CAP_0_VOLT_STEPS_OPT_MASK	GENMASK(26, 20)
#define USB4_MARGIN_CAP_1_MAX_VOLT_OFS_OPT_MASK GENMASK(7, 0)
#define USB4_MARGIN_CAP_1_TIME_DESTR		BIT(8)
#define USB4_MARGIN_CAP_1_TIME_INDP_MASK	GENMASK(10, 9)
#define USB4_MARGIN_CAP_1_TIME_MIN		0x0
#define USB4_MARGIN_CAP_1_TIME_LR		0x1
#define USB4_MARGIN_CAP_1_TIME_BOTH		0x2
#define USB4_MARGIN_CAP_1_TIME_STEPS_MASK	GENMASK(15, 11)
#define USB4_MARGIN_CAP_1_TIME_OFFSET_MASK	GENMASK(20, 16)
#define USB4_MARGIN_CAP_1_MIN_BER_MASK		GENMASK(25, 21)
#define USB4_MARGIN_CAP_1_MAX_BER_MASK		GENMASK(30, 26)
#define USB4_MARGIN_CAP_2_MODES_HW		BIT(0)
#define USB4_MARGIN_CAP_2_MODES_SW		BIT(1)
#define USB4_MARGIN_CAP_2_TIME			BIT(2)
#define USB4_MARGIN_CAP_2_MAX_VOLTAGE_OFFSET_MASK GENMASK(8, 3)
#define USB4_MARGIN_CAP_2_VOLTAGE_STEPS_MASK	GENMASK(15, 9)
#define USB4_MARGIN_CAP_2_VOLTAGE_INDP_MASK	GENMASK(17, 16)
#define USB4_MARGIN_CAP_2_VOLTAGE_MIN		0x0
#define USB4_MARGIN_CAP_2_VOLTAGE_BOTH		0x1
#define USB4_MARGIN_CAP_2_TIME_INDP_MASK	GENMASK(19, 18)
#define USB4_MARGIN_CAP_2_TIME_MIN		0x0
#define USB4_MARGIN_CAP_2_TIME_BOTH		0x1

/* USB4_SB_OPCODE_RUN_HW_LANE_MARGINING */
#define USB4_MARGIN_HW_TIME			BIT(3)
#define USB4_MARGIN_HW_RHU			BIT(4)
#define USB4_MARGIN_HW_BER_MASK			GENMASK(9, 5)
#define USB4_MARGIN_HW_BER_SHIFT		5
#define USB4_MARGIN_HW_OPT_VOLTAGE		BIT(10)

/* Applicable to all margin values */
#define USB4_MARGIN_HW_RES_MARGIN_MASK		GENMASK(6, 0)
#define USB4_MARGIN_HW_RES_EXCEEDS		BIT(7)

/* Shifts for parsing the lane results */
#define USB4_MARGIN_HW_RES_LANE_SHIFT		16
#define USB4_MARGIN_HW_RES_LL_SHIFT		8

/* USB4_SB_OPCODE_RUN_SW_LANE_MARGINING */

Annotation

Implementation Notes