cregit-Linux how code gets into the kernel

Release 4.7 include/uapi/linux/mii.h

/*
 * linux/mii.h: definitions for MII-compatible transceivers
 * Originally drivers/net/sunhme.h.
 *
 * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
 */

#ifndef _UAPI__LINUX_MII_H__

#define _UAPI__LINUX_MII_H__

#include <linux/types.h>
#include <linux/ethtool.h>

/* Generic MII registers. */

#define MII_BMCR		0x00	
/* Basic mode control register */

#define MII_BMSR		0x01	
/* Basic mode status register  */

#define MII_PHYSID1		0x02	
/* PHYS ID 1                   */

#define MII_PHYSID2		0x03	
/* PHYS ID 2                   */

#define MII_ADVERTISE		0x04	
/* Advertisement control reg   */

#define MII_LPA			0x05	
/* Link partner ability reg    */

#define MII_EXPANSION		0x06	
/* Expansion register          */

#define MII_CTRL1000		0x09	
/* 1000BASE-T control          */

#define MII_STAT1000		0x0a	
/* 1000BASE-T status           */

#define	MII_MMD_CTRL		0x0d	
/* MMD Access Control Register */

#define	MII_MMD_DATA		0x0e	
/* MMD Access Data Register */

#define MII_ESTATUS		0x0f	
/* Extended Status             */

#define MII_DCOUNTER		0x12	
/* Disconnect counter          */

#define MII_FCSCOUNTER		0x13	
/* False carrier counter       */

#define MII_NWAYTEST		0x14	
/* N-way auto-neg test reg     */

#define MII_RERRCOUNTER		0x15	
/* Receive error counter       */

#define MII_SREVISION		0x16	
/* Silicon revision            */

#define MII_RESV1		0x17	
/* Reserved...                 */

#define MII_LBRERROR		0x18	
/* Lpback, rx, bypass error    */

#define MII_PHYADDR		0x19	
/* PHY address                 */

#define MII_RESV2		0x1a	
/* Reserved...                 */

#define MII_TPISTATUS		0x1b	
/* TPI status for 10mbps       */

#define MII_NCONFIG		0x1c	
/* Network interface config    */

/* Basic mode control register. */

#define BMCR_RESV		0x003f	
/* Unused...                   */

#define BMCR_SPEED1000		0x0040	
/* MSB of Speed (1000)         */

#define BMCR_CTST		0x0080	
/* Collision test              */

#define BMCR_FULLDPLX		0x0100	
/* Full duplex                 */

#define BMCR_ANRESTART		0x0200	
/* Auto negotiation restart    */

#define BMCR_ISOLATE		0x0400	
/* Isolate data paths from MII */

#define BMCR_PDOWN		0x0800	
/* Enable low power state      */

#define BMCR_ANENABLE		0x1000	
/* Enable auto negotiation     */

#define BMCR_SPEED100		0x2000	
/* Select 100Mbps              */

#define BMCR_LOOPBACK		0x4000	
/* TXD loopback bits           */

#define BMCR_RESET		0x8000	
/* Reset to default state      */

/* Basic mode status register. */

#define BMSR_ERCAP		0x0001	
/* Ext-reg capability          */

#define BMSR_JCD		0x0002	
/* Jabber detected             */

#define BMSR_LSTATUS		0x0004	
/* Link status                 */

#define BMSR_ANEGCAPABLE	0x0008	
/* Able to do auto-negotiation */

#define BMSR_RFAULT		0x0010	
/* Remote fault detected       */

#define BMSR_ANEGCOMPLETE	0x0020	
/* Auto-negotiation complete   */

#define BMSR_RESV		0x00c0	
/* Unused...                   */

#define BMSR_ESTATEN		0x0100	
/* Extended Status in R15      */

#define BMSR_100HALF2		0x0200	
/* Can do 100BASE-T2 HDX       */

#define BMSR_100FULL2		0x0400	
/* Can do 100BASE-T2 FDX       */

#define BMSR_10HALF		0x0800	
/* Can do 10mbps, half-duplex  */

#define BMSR_10FULL		0x1000	
/* Can do 10mbps, full-duplex  */

#define BMSR_100HALF		0x2000	
/* Can do 100mbps, half-duplex */

#define BMSR_100FULL		0x4000	
/* Can do 100mbps, full-duplex */

#define BMSR_100BASE4		0x8000	
/* Can do 100mbps, 4k packets  */

/* Advertisement control register. */

#define ADVERTISE_SLCT		0x001f	
/* Selector bits               */

#define ADVERTISE_CSMA		0x0001	
/* Only selector supported     */

#define ADVERTISE_10HALF	0x0020	
/* Try for 10mbps half-duplex  */

#define ADVERTISE_1000XFULL	0x0020	
/* Try for 1000BASE-X full-duplex */

#define ADVERTISE_10FULL	0x0040	
/* Try for 10mbps full-duplex  */

#define ADVERTISE_1000XHALF	0x0040	
/* Try for 1000BASE-X half-duplex */

#define ADVERTISE_100HALF	0x0080	
/* Try for 100mbps half-duplex */

#define ADVERTISE_1000XPAUSE	0x0080	
/* Try for 1000BASE-X pause    */

#define ADVERTISE_100FULL	0x0100	
/* Try for 100mbps full-duplex */

#define ADVERTISE_1000XPSE_ASYM	0x0100	
/* Try for 1000BASE-X asym pause */

#define ADVERTISE_100BASE4	0x0200	
/* Try for 100mbps 4k packets  */

#define ADVERTISE_PAUSE_CAP	0x0400	
/* Try for pause               */

#define ADVERTISE_PAUSE_ASYM	0x0800	
/* Try for asymetric pause     */

#define ADVERTISE_RESV		0x1000	
/* Unused...                   */

#define ADVERTISE_RFAULT	0x2000	
/* Say we can detect faults    */

#define ADVERTISE_LPACK		0x4000	
/* Ack link partners response  */

#define ADVERTISE_NPAGE		0x8000	
/* Next page bit               */


#define ADVERTISE_FULL		(ADVERTISE_100FULL | ADVERTISE_10FULL | \
                                  ADVERTISE_CSMA)

#define ADVERTISE_ALL		(ADVERTISE_10HALF | ADVERTISE_10FULL | \
                                  ADVERTISE_100HALF | ADVERTISE_100FULL)

/* Link partner ability register. */

#define LPA_SLCT		0x001f	
/* Same as advertise selector  */

#define LPA_10HALF		0x0020	
/* Can do 10mbps half-duplex   */

#define LPA_1000XFULL		0x0020	
/* Can do 1000BASE-X full-duplex */

#define LPA_10FULL		0x0040	
/* Can do 10mbps full-duplex   */

#define LPA_1000XHALF		0x0040	
/* Can do 1000BASE-X half-duplex */

#define LPA_100HALF		0x0080	
/* Can do 100mbps half-duplex  */

#define LPA_1000XPAUSE		0x0080	
/* Can do 1000BASE-X pause     */

#define LPA_100FULL		0x0100	
/* Can do 100mbps full-duplex  */

#define LPA_1000XPAUSE_ASYM	0x0100	
/* Can do 1000BASE-X pause asym*/

#define LPA_100BASE4		0x0200	
/* Can do 100mbps 4k packets   */

#define LPA_PAUSE_CAP		0x0400	
/* Can pause                   */

#define LPA_PAUSE_ASYM		0x0800	
/* Can pause asymetrically     */

#define LPA_RESV		0x1000	
/* Unused...                   */

#define LPA_RFAULT		0x2000	
/* Link partner faulted        */

#define LPA_LPACK		0x4000	
/* Link partner acked us       */

#define LPA_NPAGE		0x8000	
/* Next page bit               */


#define LPA_DUPLEX		(LPA_10FULL | LPA_100FULL)

#define LPA_100			(LPA_100FULL | LPA_100HALF | LPA_100BASE4)

/* Expansion register for auto-negotiation. */

#define EXPANSION_NWAY		0x0001	
/* Can do N-way auto-nego      */

#define EXPANSION_LCWP		0x0002	
/* Got new RX page code word   */

#define EXPANSION_ENABLENPAGE	0x0004	
/* This enables npage words    */

#define EXPANSION_NPCAPABLE	0x0008	
/* Link partner supports npage */

#define EXPANSION_MFAULTS	0x0010	
/* Multiple faults detected    */

#define EXPANSION_RESV		0xffe0	
/* Unused...                   */


#define ESTATUS_1000_TFULL	0x2000	
/* Can do 1000BT Full          */

#define ESTATUS_1000_THALF	0x1000	
/* Can do 1000BT Half          */

/* N-way test register. */

#define NWAYTEST_RESV1		0x00ff	
/* Unused...                   */

#define NWAYTEST_LOOPBACK	0x0100	
/* Enable loopback for N-way   */

#define NWAYTEST_RESV2		0xfe00	
/* Unused...                   */

/* 1000BASE-T Control register */

#define ADVERTISE_1000FULL	0x0200  
/* Advertise 1000BASE-T full duplex */

#define ADVERTISE_1000HALF	0x0100  
/* Advertise 1000BASE-T half duplex */

#define CTL1000_AS_MASTER	0x0800

#define CTL1000_ENABLE_MASTER	0x1000

/* 1000BASE-T Status register */

#define LPA_1000LOCALRXOK	0x2000	
/* Link partner local receiver status */

#define LPA_1000REMRXOK		0x1000	
/* Link partner remote receiver status */

#define LPA_1000FULL		0x0800	
/* Link partner 1000BASE-T full duplex */

#define LPA_1000HALF		0x0400	
/* Link partner 1000BASE-T half duplex */

/* Flow control flags */

#define FLOW_CTRL_TX		0x01

#define FLOW_CTRL_RX		0x02

/* MMD Access Control register fields */

#define MII_MMD_CTRL_DEVAD_MASK	0x1f	
/* Mask MMD DEVAD*/

#define MII_MMD_CTRL_ADDR	0x0000	
/* Address */

#define MII_MMD_CTRL_NOINCR	0x4000	
/* no post increment */

#define MII_MMD_CTRL_INCR_RDWT	0x8000	
/* post increment on reads & writes */

#define MII_MMD_CTRL_INCR_ON_WT	0xC000	
/* post increment on writes only */

/* This structure is used in all SIOCxMIIxxx ioctl calls */

struct mii_ioctl_data {
	
__u16		phy_id;
	
__u16		reg_num;
	
__u16		val_in;
	
__u16		val_out;
};

#endif /* _UAPI__LINUX_MII_H__ */

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