drivers/usb/musb/musb_regs.h

Source file repositories/reference/linux-study-clean/drivers/usb/musb/musb_regs.h

File Facts

System: Linux kernel
Corpus path: drivers/usb/musb/musb_regs.h
Extension: .h
Size: 10847 bytes
Lines: 363
Domain: Driver Families
Bucket: drivers/usb
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.

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.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

tusb6010.h

Detected Declarations

function Copyright
function musb_write_rxfunaddr
function musb_write_rxhubaddr
function musb_write_rxhubport
function musb_write_txfunaddr
function musb_write_txhubaddr
function musb_write_txhubport
function musb_read_rxfunaddr
function musb_read_rxhubaddr
function musb_read_rxhubport
function musb_read_txfunaddr
function musb_read_txhubaddr
function musb_read_txhubport

Annotated Snippet

#ifndef __MUSB_REGS_H__
#define __MUSB_REGS_H__

#define MUSB_EP0_FIFOSIZE	64	/* This is non-configurable */

/*
 * MUSB Register bits
 */

/* POWER */
#define MUSB_POWER_ISOUPDATE	0x80
#define MUSB_POWER_SOFTCONN	0x40
#define MUSB_POWER_HSENAB	0x20
#define MUSB_POWER_HSMODE	0x10
#define MUSB_POWER_RESET	0x08
#define MUSB_POWER_RESUME	0x04
#define MUSB_POWER_SUSPENDM	0x02
#define MUSB_POWER_ENSUSPEND	0x01

/* INTRUSB */
#define MUSB_INTR_SUSPEND	0x01
#define MUSB_INTR_RESUME	0x02
#define MUSB_INTR_RESET		0x04
#define MUSB_INTR_BABBLE	0x04
#define MUSB_INTR_SOF		0x08
#define MUSB_INTR_CONNECT	0x10
#define MUSB_INTR_DISCONNECT	0x20
#define MUSB_INTR_SESSREQ	0x40
#define MUSB_INTR_VBUSERROR	0x80	/* For SESSION end */

/* DEVCTL */
#define MUSB_DEVCTL_BDEVICE	0x80
#define MUSB_DEVCTL_FSDEV	0x40
#define MUSB_DEVCTL_LSDEV	0x20
#define MUSB_DEVCTL_VBUS	0x18
#define MUSB_DEVCTL_VBUS_SHIFT	3
#define MUSB_DEVCTL_HM		0x04
#define MUSB_DEVCTL_HR		0x02
#define MUSB_DEVCTL_SESSION	0x01

/* BABBLE_CTL */
#define MUSB_BABBLE_FORCE_TXIDLE	0x80
#define MUSB_BABBLE_SW_SESSION_CTRL	0x40
#define MUSB_BABBLE_STUCK_J		0x20
#define MUSB_BABBLE_RCV_DISABLE		0x04

/* MUSB ULPI VBUSCONTROL */
#define MUSB_ULPI_USE_EXTVBUS	0x01
#define MUSB_ULPI_USE_EXTVBUSIND 0x02
/* ULPI_REG_CONTROL */
#define MUSB_ULPI_REG_REQ	(1 << 0)
#define MUSB_ULPI_REG_CMPLT	(1 << 1)
#define MUSB_ULPI_RDN_WR	(1 << 2)

/* TESTMODE */
#define MUSB_TEST_FORCE_HOST	0x80
#define MUSB_TEST_FIFO_ACCESS	0x40
#define MUSB_TEST_FORCE_FS	0x20
#define MUSB_TEST_FORCE_HS	0x10
#define MUSB_TEST_PACKET	0x08
#define MUSB_TEST_K		0x04
#define MUSB_TEST_J		0x02
#define MUSB_TEST_SE0_NAK	0x01

/* Allocate for double-packet buffering (effectively doubles assigned _SIZE) */
#define MUSB_FIFOSZ_DPB	0x10
/* Allocation size (8, 16, 32, ... 4096) */
#define MUSB_FIFOSZ_SIZE	0x0f

/* CSR0 */
#define MUSB_CSR0_FLUSHFIFO	0x0100
#define MUSB_CSR0_TXPKTRDY	0x0002
#define MUSB_CSR0_RXPKTRDY	0x0001

/* CSR0 in Peripheral mode */
#define MUSB_CSR0_P_SVDSETUPEND	0x0080
#define MUSB_CSR0_P_SVDRXPKTRDY	0x0040
#define MUSB_CSR0_P_SENDSTALL	0x0020
#define MUSB_CSR0_P_SETUPEND	0x0010
#define MUSB_CSR0_P_DATAEND	0x0008
#define MUSB_CSR0_P_SENTSTALL	0x0004

/* CSR0 in Host mode */
#define MUSB_CSR0_H_DIS_PING		0x0800
#define MUSB_CSR0_H_WR_DATATOGGLE	0x0400	/* Set to allow setting: */
#define MUSB_CSR0_H_DATATOGGLE		0x0200	/* Data toggle control */
#define MUSB_CSR0_H_NAKTIMEOUT		0x0080
#define MUSB_CSR0_H_STATUSPKT		0x0040
#define MUSB_CSR0_H_REQPKT		0x0020
#define MUSB_CSR0_H_ERROR		0x0010

Annotation

Immediate include surface: `tusb6010.h`.
Detected declarations: `function Copyright`, `function musb_write_rxfunaddr`, `function musb_write_rxhubaddr`, `function musb_write_rxhubport`, `function musb_write_txfunaddr`, `function musb_write_txhubaddr`, `function musb_write_txhubport`, `function musb_read_rxfunaddr`, `function musb_read_rxhubaddr`, `function musb_read_rxhubport`.
Atlas domain: Driver Families / drivers/usb.
Implementation status: source implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.