freebsd-nq/sys/dev/dc/if_dcreg.h

/*-
 * Copyright (c) 1997, 1998, 1999
 *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Bill Paul.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */

/*
 * 21143 and clone common register definitions.
 */

#define DC_BUSCTL		0x00	/* bus control */
#define DC_TXSTART		0x08	/* tx start demand */
#define DC_RXSTART		0x10	/* rx start demand */
#define DC_RXADDR		0x18	/* rx descriptor list start addr */
#define DC_TXADDR		0x20	/* tx descriptor list start addr */
#define DC_ISR			0x28	/* interrupt status register */
#define DC_NETCFG		0x30	/* network config register */
#define DC_IMR			0x38	/* interrupt mask */
#define DC_FRAMESDISCARDED	0x40	/* # of discarded frames */
#define DC_SIO			0x48	/* MII and ROM/EEPROM access */
#define DC_ROM			0x50	/* ROM programming address */
#define DC_TIMER		0x58	/* general timer */
#define DC_10BTSTAT		0x60	/* SIA status */
#define DC_SIARESET		0x68	/* SIA connectivity */
#define DC_10BTCTRL		0x70	/* SIA transmit and receive */
#define DC_WATCHDOG		0x78	/* SIA and general purpose port */
#define DC_SIAGP		0x78	/* SIA and general purpose port (X3201) */

/*
 * There are two general 'types' of MX chips that we need to be
 * concerned with. One is the original 98713, which has its internal
 * NWAY support controlled via the MDIO bits in the serial I/O
 * register. The other is everything else (from the 98713A on up),
 * which has its internal NWAY controlled via CSR13, CSR14 and CSR15,
 * just like the 21143. This type setting also governs which of the
 * 'magic' numbers we write to CSR16. The PNIC II falls into the
 * 98713A/98715/98715A/98725 category.
 */
#define DC_TYPE_98713		0x1
#define DC_TYPE_98713A		0x2
#define DC_TYPE_987x5		0x3

/* Other type of supported chips. */
#define DC_TYPE_21143		0x4	/* Intel 21143 */
#define DC_TYPE_ASIX		0x5	/* ASIX AX88140A/AX88141 */
#define DC_TYPE_AL981		0x6	/* ADMtek AL981 Comet */
#define DC_TYPE_AN983		0x7	/* ADMtek AN983 Centaur */
#define DC_TYPE_DM9102		0x8	/* Davicom DM9102 */
#define DC_TYPE_PNICII		0x9	/* 82c115 PNIC II */
#define DC_TYPE_PNIC		0xA	/* 82c168/82c169 PNIC I */
#define	DC_TYPE_XIRCOM		0xB	/* Xircom X3201 */
#define DC_TYPE_CONEXANT	0xC	/* Conexant LANfinity RS7112 */

#define DC_IS_MACRONIX(x)			\
	(x->dc_type == DC_TYPE_98713 ||		\
	 x->dc_type == DC_TYPE_98713A ||	\
	 x->dc_type == DC_TYPE_987x5)

#define DC_IS_ADMTEK(x)				\
	(x->dc_type == DC_TYPE_AL981 ||		\
	 x->dc_type == DC_TYPE_AN983)

#define DC_IS_INTEL(x)		(x->dc_type == DC_TYPE_21143)
#define DC_IS_ASIX(x)		(x->dc_type == DC_TYPE_ASIX)
#define DC_IS_COMET(x)		(x->dc_type == DC_TYPE_AL981)
#define DC_IS_CENTAUR(x)	(x->dc_type == DC_TYPE_AN983)
#define DC_IS_DAVICOM(x)	(x->dc_type == DC_TYPE_DM9102)
#define DC_IS_PNICII(x)		(x->dc_type == DC_TYPE_PNICII)
#define DC_IS_PNIC(x)		(x->dc_type == DC_TYPE_PNIC)
#define	DC_IS_XIRCOM(x)		(x->dc_type == DC_TYPE_XIRCOM)
#define DC_IS_CONEXANT(x)	(x->dc_type == DC_TYPE_CONEXANT)

/* MII/symbol mode port types */
#define DC_PMODE_MII		0x1
#define DC_PMODE_SYM		0x2
#define DC_PMODE_SIA		0x3

/*
 * Bus control bits.
 */
#define DC_BUSCTL_RESET		0x00000001
#define DC_BUSCTL_ARBITRATION	0x00000002
#define DC_BUSCTL_SKIPLEN	0x0000007C
#define DC_BUSCTL_BUF_BIGENDIAN	0x00000080
#define DC_BUSCTL_BURSTLEN	0x00003F00
#define DC_BUSCTL_CACHEALIGN	0x0000C000
#define DC_BUSCTL_TXPOLL	0x000E0000
#define DC_BUSCTL_DBO		0x00100000
#define DC_BUSCTL_MRME		0x00200000
#define DC_BUSCTL_MRLE		0x00800000
#define DC_BUSCTL_MWIE		0x01000000
#define DC_BUSCTL_ONNOW_ENB	0x04000000

#define DC_SKIPLEN_1LONG	0x00000004
#define DC_SKIPLEN_2LONG	0x00000008
#define DC_SKIPLEN_3LONG	0x00000010
#define DC_SKIPLEN_4LONG	0x00000020
#define DC_SKIPLEN_5LONG	0x00000040

#define DC_CACHEALIGN_NONE	0x00000000
#define DC_CACHEALIGN_8LONG	0x00004000
#define DC_CACHEALIGN_16LONG	0x00008000
#define DC_CACHEALIGN_32LONG	0x0000C000

#define DC_BURSTLEN_USECA	0x00000000
#define DC_BURSTLEN_1LONG	0x00000100
#define DC_BURSTLEN_2LONG	0x00000200
#define DC_BURSTLEN_4LONG	0x00000400
#define DC_BURSTLEN_8LONG	0x00000800
#define DC_BURSTLEN_16LONG	0x00001000
#define DC_BURSTLEN_32LONG	0x00002000

#define DC_TXPOLL_OFF		0x00000000
#define DC_TXPOLL_1		0x00020000
#define DC_TXPOLL_2		0x00040000
#define DC_TXPOLL_3		0x00060000
#define DC_TXPOLL_4		0x00080000
#define DC_TXPOLL_5		0x000A0000
#define DC_TXPOLL_6		0x000C0000
#define DC_TXPOLL_7		0x000E0000

/*
 * Interrupt status bits.
 */
#define DC_ISR_TX_OK		0x00000001
#define DC_ISR_TX_IDLE		0x00000002
#define DC_ISR_TX_NOBUF		0x00000004
#define DC_ISR_TX_JABBERTIMEO	0x00000008
#define DC_ISR_LINKGOOD		0x00000010
#define DC_ISR_TX_UNDERRUN	0x00000020
#define DC_ISR_RX_OK		0x00000040
#define DC_ISR_RX_NOBUF		0x00000080
#define DC_ISR_RX_READ		0x00000100
#define DC_ISR_RX_WATDOGTIMEO	0x00000200
#define DC_ISR_TX_EARLY		0x00000400
#define DC_ISR_TIMER_EXPIRED	0x00000800
#define DC_ISR_LINKFAIL		0x00001000
#define DC_ISR_BUS_ERR		0x00002000
#define DC_ISR_RX_EARLY		0x00004000
#define DC_ISR_ABNORMAL		0x00008000
#define DC_ISR_NORMAL		0x00010000
#define DC_ISR_RX_STATE		0x000E0000
#define DC_ISR_TX_STATE		0x00700000
#define DC_ISR_BUSERRTYPE	0x03800000
#define DC_ISR_100MBPSLINK	0x08000000
#define DC_ISR_MAGICKPACK	0x10000000

#define DC_RXSTATE_STOPPED	0x00000000	/* 000 - Stopped */
#define DC_RXSTATE_FETCH	0x00020000	/* 001 - Fetching descriptor */
#define DC_RXSTATE_ENDCHECK	0x00040000	/* 010 - check for rx end */
#define DC_RXSTATE_WAIT		0x00060000	/* 011 - waiting for packet */
#define DC_RXSTATE_SUSPEND	0x00080000	/* 100 - suspend rx */
#define DC_RXSTATE_CLOSE	0x000A0000	/* 101 - close tx desc */
#define DC_RXSTATE_FLUSH	0x000C0000	/* 110 - flush from FIFO */
#define DC_RXSTATE_DEQUEUE	0x000E0000	/* 111 - dequeue from FIFO */

#define	DC_HAS_BROKEN_RXSTATE(x)					\
	(DC_IS_CENTAUR(x) || DC_IS_CONEXANT(x) || (DC_IS_DAVICOM(x) &&	\
	pci_get_revid((x)->dc_dev) >= DC_REVISION_DM9102A))

#define DC_TXSTATE_RESET	0x00000000	/* 000 - reset */
#define DC_TXSTATE_FETCH	0x00100000	/* 001 - fetching descriptor */
#define DC_TXSTATE_WAITEND	0x00200000	/* 010 - wait for tx end */
#define DC_TXSTATE_READING	0x00300000	/* 011 - read and enqueue */
#define DC_TXSTATE_RSVD		0x00400000	/* 100 - reserved */
#define DC_TXSTATE_SETUP	0x00500000	/* 101 - setup packet */
#define DC_TXSTATE_SUSPEND	0x00600000	/* 110 - suspend tx */
#define DC_TXSTATE_CLOSE	0x00700000	/* 111 - close tx desc */

/*
 * Network config bits.
 */
#define DC_NETCFG_RX_HASHPERF	0x00000001
#define DC_NETCFG_RX_ON		0x00000002
#define DC_NETCFG_RX_HASHONLY	0x00000004
#define DC_NETCFG_RX_BADFRAMES	0x00000008
#define DC_NETCFG_RX_INVFILT	0x00000010
#define DC_NETCFG_BACKOFFCNT	0x00000020
#define DC_NETCFG_RX_PROMISC	0x00000040
#define DC_NETCFG_RX_ALLMULTI	0x00000080
#define DC_NETCFG_FULLDUPLEX	0x00000200
#define DC_NETCFG_LOOPBACK	0x00000C00
#define DC_NETCFG_FORCECOLL	0x00001000
#define DC_NETCFG_TX_ON		0x00002000
#define DC_NETCFG_TX_THRESH	0x0000C000
#define DC_NETCFG_TX_BACKOFF	0x00020000
#define DC_NETCFG_PORTSEL	0x00040000	/* 0 == 10, 1 == 100 */
#define DC_NETCFG_HEARTBEAT	0x00080000
#define DC_NETCFG_STORENFWD	0x00200000
#define DC_NETCFG_SPEEDSEL	0x00400000	/* 1 == 10, 0 == 100 */
#define DC_NETCFG_PCS		0x00800000
#define DC_NETCFG_SCRAMBLER	0x01000000
#define DC_NETCFG_NO_RXCRC	0x02000000
#define DC_NETCFG_RX_ALL	0x40000000
#define DC_NETCFG_CAPEFFECT	0x80000000

#define DC_OPMODE_NORM		0x00000000
#define DC_OPMODE_INTLOOP	0x00000400
#define DC_OPMODE_EXTLOOP	0x00000800

#if 0
#define DC_TXTHRESH_72BYTES	0x00000000
#define DC_TXTHRESH_96BYTES	0x00004000
#define DC_TXTHRESH_128BYTES	0x00008000
#define DC_TXTHRESH_160BYTES	0x0000C000
#endif

#define DC_TXTHRESH_MIN		0x00000000
#define DC_TXTHRESH_INC		0x00004000
#define DC_TXTHRESH_MAX		0x0000C000


/*
 * Interrupt mask bits.
 */
#define DC_IMR_TX_OK		0x00000001
#define DC_IMR_TX_IDLE		0x00000002
#define DC_IMR_TX_NOBUF		0x00000004
#define DC_IMR_TX_JABBERTIMEO	0x00000008
#define DC_IMR_LINKGOOD		0x00000010
#define DC_IMR_TX_UNDERRUN	0x00000020
#define DC_IMR_RX_OK		0x00000040
#define DC_IMR_RX_NOBUF		0x00000080
#define DC_IMR_RX_READ		0x00000100
#define DC_IMR_RX_WATDOGTIMEO	0x00000200
#define DC_IMR_TX_EARLY		0x00000400
#define DC_IMR_TIMER_EXPIRED	0x00000800
#define DC_IMR_LINKFAIL		0x00001000
#define DC_IMR_BUS_ERR		0x00002000
#define DC_IMR_RX_EARLY		0x00004000
#define DC_IMR_ABNORMAL		0x00008000
#define DC_IMR_NORMAL		0x00010000
#define DC_IMR_100MBPSLINK	0x08000000
#define DC_IMR_MAGICKPACK	0x10000000

#define DC_INTRS	\
	(DC_IMR_RX_OK|DC_IMR_TX_OK|DC_IMR_RX_NOBUF|DC_IMR_RX_WATDOGTIMEO|\
	DC_IMR_TX_NOBUF|DC_IMR_TX_UNDERRUN|DC_IMR_BUS_ERR|		\
	DC_IMR_ABNORMAL|DC_IMR_NORMAL/*|DC_IMR_TX_EARLY*/)
/*
 * Serial I/O (EEPROM/ROM) bits.
 */
#define DC_SIO_EE_CS		0x00000001	/* EEPROM chip select */
#define DC_SIO_EE_CLK		0x00000002	/* EEPROM clock */
#define DC_SIO_EE_DATAIN	0x00000004	/* EEPROM data output */
#define DC_SIO_EE_DATAOUT	0x00000008	/* EEPROM data input */
#define DC_SIO_ROMDATA4		0x00000010
#define DC_SIO_ROMDATA5		0x00000020
#define DC_SIO_ROMDATA6		0x00000040
#define DC_SIO_ROMDATA7		0x00000080
#define DC_SIO_EESEL		0x00000800
#define DC_SIO_ROMSEL		0x00001000
#define DC_SIO_ROMCTL_WRITE	0x00002000
#define DC_SIO_ROMCTL_READ	0x00004000
#define DC_SIO_MII_CLK		0x00010000	/* MDIO clock */
#define DC_SIO_MII_DATAOUT	0x00020000	/* MDIO data out */
#define DC_SIO_MII_DIR		0x00040000	/* MDIO dir */
#define DC_SIO_MII_DATAIN	0x00080000	/* MDIO data in */

#define DC_EECMD_WRITE		0x140
#define DC_EECMD_READ		0x180
#define DC_EECMD_ERASE		0x1c0

#define DC_EE_NODEADDR_OFFSET	0x70
#define DC_EE_NODEADDR		10

/*
 * General purpose timer register
 */
#define DC_TIMER_VALUE		0x0000FFFF
#define DC_TIMER_CONTINUOUS	0x00010000

/*
 * 10baseT status register
 */
#define DC_TSTAT_MIIACT		0x00000001 /* MII port activity */
#define DC_TSTAT_LS100		0x00000002 /* link status of 100baseTX */
#define DC_TSTAT_LS10		0x00000004 /* link status of 10baseT */
#define DC_TSTAT_AUTOPOLARITY	0x00000008
#define DC_TSTAT_AUIACT		0x00000100 /* AUI activity */
#define DC_TSTAT_10BTACT	0x00000200 /* 10baseT activity */
#define DC_TSTAT_NSN		0x00000400 /* non-stable FLPs detected */
#define DC_TSTAT_REMFAULT	0x00000800
#define DC_TSTAT_ANEGSTAT	0x00007000
#define DC_TSTAT_LP_CAN_NWAY	0x00008000 /* link partner supports NWAY */
#define DC_TSTAT_LPCODEWORD	0xFFFF0000 /* link partner's code word */

#define DC_ASTAT_DISABLE	0x00000000
#define DC_ASTAT_TXDISABLE	0x00001000
#define DC_ASTAT_ABDETECT	0x00002000
#define DC_ASTAT_ACKDETECT	0x00003000
#define DC_ASTAT_CMPACKDETECT	0x00004000
#define DC_ASTAT_AUTONEGCMP	0x00005000
#define DC_ASTAT_LINKCHECK	0x00006000

/*
 * PHY reset register
 */
#define DC_SIA_RESET		0x00000001
#define DC_SIA_AUI		0x00000008 /* AUI or 10baseT */

/*
 * 10baseT control register
 */
#define DC_TCTL_ENCODER_ENB	0x00000001
#define DC_TCTL_LOOPBACK	0x00000002
#define DC_TCTL_DRIVER_ENB	0x00000004
#define DC_TCTL_LNKPULSE_ENB	0x00000008
#define DC_TCTL_HALFDUPLEX	0x00000040
#define DC_TCTL_AUTONEGENBL	0x00000080
#define DC_TCTL_RX_SQUELCH	0x00000100
#define DC_TCTL_COLL_SQUELCH	0x00000200
#define DC_TCTL_COLL_DETECT	0x00000400
#define DC_TCTL_SQE_ENB		0x00000800
#define DC_TCTL_LINKTEST	0x00001000
#define DC_TCTL_AUTOPOLARITY	0x00002000
#define DC_TCTL_SET_POL_PLUS	0x00004000
#define DC_TCTL_AUTOSENSE	0x00008000	/* 10bt/AUI autosense */
#define DC_TCTL_100BTXHALF	0x00010000
#define DC_TCTL_100BTXFULL	0x00020000
#define DC_TCTL_100BT4		0x00040000

/*
 * Watchdog timer register
 */
#define DC_WDOG_JABBERDIS	0x00000001
#define DC_WDOG_HOSTUNJAB	0x00000002
#define DC_WDOG_JABBERCLK	0x00000004
#define DC_WDOG_RXWDOGDIS	0x00000010
#define DC_WDOG_RXWDOGCLK	0x00000020
#define DC_WDOG_MUSTBEZERO	0x00000100
#define DC_WDOG_AUIBNC		0x00100000
#define DC_WDOG_ACTIVITY	0x00200000
#define DC_WDOG_RX_MATCH	0x00400000
#define DC_WDOG_LINK		0x00800000
#define DC_WDOG_CTLWREN		0x08000000

/*
 * SIA and General Purpose Port register (X3201)
 */
#define DC_SIAGP_RXMATCH	0x40000000
#define DC_SIAGP_INT1		0x20000000
#define DC_SIAGP_INT0		0x10000000
#define DC_SIAGP_WRITE_EN	0x08000000
#define DC_SIAGP_RXMATCH_EN	0x04000000
#define DC_SIAGP_INT1_EN	0x02000000
#define DC_SIAGP_INT0_EN	0x01000000
#define DC_SIAGP_LED3		0x00800000
#define DC_SIAGP_LED2		0x00400000
#define DC_SIAGP_LED1		0x00200000
#define DC_SIAGP_LED0		0x00100000
#define DC_SIAGP_MD_GP3_OUTPUT	0x00080000
#define DC_SIAGP_MD_GP2_OUTPUT	0x00040000
#define DC_SIAGP_MD_GP1_OUTPUT	0x00020000
#define DC_SIAGP_MD_GP0_OUTPUT	0x00010000

/*
 * Size of a setup frame.
 */
#define DC_SFRAME_LEN		192

/*
 * 21x4x TX/RX list structure.
 */

struct dc_desc {
	u_int32_t		dc_status;
	u_int32_t		dc_ctl;
	u_int32_t		dc_ptr1;
	u_int32_t		dc_ptr2;
};

#define dc_data		dc_ptr1
#define dc_next		dc_ptr2

#define DC_RXSTAT_FIFOOFLOW	0x00000001
#define DC_RXSTAT_CRCERR	0x00000002
#define DC_RXSTAT_DRIBBLE	0x00000004
#define DC_RXSTAT_MIIERE	0x00000008
#define DC_RXSTAT_WATCHDOG	0x00000010
#define DC_RXSTAT_FRAMETYPE	0x00000020	/* 0 == IEEE 802.3 */
#define DC_RXSTAT_COLLSEEN	0x00000040
#define DC_RXSTAT_GIANT		0x00000080
#define DC_RXSTAT_LASTFRAG	0x00000100
#define DC_RXSTAT_FIRSTFRAG	0x00000200
#define DC_RXSTAT_MULTICAST	0x00000400
#define DC_RXSTAT_RUNT		0x00000800
#define DC_RXSTAT_RXTYPE	0x00003000
#define DC_RXSTAT_DE		0x00004000
#define DC_RXSTAT_RXERR		0x00008000
#define DC_RXSTAT_RXLEN		0x3FFF0000
#define DC_RXSTAT_OWN		0x80000000

#define DC_RXBYTES(x)		((x & DC_RXSTAT_RXLEN) >> 16)
#define DC_RXSTAT (DC_RXSTAT_FIRSTFRAG|DC_RXSTAT_LASTFRAG|DC_RXSTAT_OWN)

#define DC_RXCTL_BUFLEN1	0x00000FFF
#define DC_RXCTL_BUFLEN2	0x00FFF000
#define DC_RXCTL_RLINK		0x01000000
#define DC_RXCTL_RLAST		0x02000000

#define DC_TXSTAT_DEFER		0x00000001
#define DC_TXSTAT_UNDERRUN	0x00000002
#define DC_TXSTAT_LINKFAIL	0x00000003
#define DC_TXSTAT_COLLCNT	0x00000078
#define DC_TXSTAT_SQE		0x00000080
#define DC_TXSTAT_EXCESSCOLL	0x00000100
#define DC_TXSTAT_LATECOLL	0x00000200
#define DC_TXSTAT_NOCARRIER	0x00000400
#define DC_TXSTAT_CARRLOST	0x00000800
#define DC_TXSTAT_JABTIMEO	0x00004000
#define DC_TXSTAT_ERRSUM	0x00008000
#define DC_TXSTAT_OWN		0x80000000

#define DC_TXCTL_BUFLEN1	0x000007FF
#define DC_TXCTL_BUFLEN2	0x003FF800
#define DC_TXCTL_FILTTYPE0	0x00400000
#define DC_TXCTL_PAD		0x00800000
#define DC_TXCTL_TLINK		0x01000000
#define DC_TXCTL_TLAST		0x02000000
#define DC_TXCTL_NOCRC		0x04000000
#define DC_TXCTL_SETUP		0x08000000
#define DC_TXCTL_FILTTYPE1	0x10000000
#define DC_TXCTL_FIRSTFRAG	0x20000000
#define DC_TXCTL_LASTFRAG	0x40000000
#define DC_TXCTL_FINT		0x80000000

#define DC_FILTER_PERFECT	0x00000000
#define DC_FILTER_HASHPERF	0x00400000
#define DC_FILTER_INVERSE	0x10000000
#define DC_FILTER_HASHONLY	0x10400000

#define DC_MAXFRAGS		16
#ifdef DEVICE_POLLING
#define DC_RX_LIST_CNT		192
#else
#define DC_RX_LIST_CNT		64
#endif
#define DC_TX_LIST_CNT		256
#define DC_TX_LIST_RSVD		5
#define DC_MIN_FRAMELEN		60
#define DC_RXLEN		1536

#define DC_INC(x, y)		(x) = (x + 1) % y

/* Macros to easily get the DMA address of a descriptor. */
#define DC_RXDESC(sc, i)	(sc->dc_laddr +				\
    (uintptr_t)(sc->dc_ldata->dc_rx_list + i) - (uintptr_t)sc->dc_ldata)
#define DC_TXDESC(sc, i)	(sc->dc_laddr +				\
    (uintptr_t)(sc->dc_ldata->dc_tx_list + i) - (uintptr_t)sc->dc_ldata)

#if BYTE_ORDER == BIG_ENDIAN
#define DC_SP_MAC(x)		((x) << 16)
#else
#define DC_SP_MAC(x)		(x)
#endif

struct dc_list_data {
	struct dc_desc		dc_rx_list[DC_RX_LIST_CNT];
	struct dc_desc		dc_tx_list[DC_TX_LIST_CNT];
};

struct dc_chain_data {
	struct mbuf		*dc_rx_chain[DC_RX_LIST_CNT];
	struct mbuf		*dc_tx_chain[DC_TX_LIST_CNT];
	bus_dmamap_t		dc_rx_map[DC_RX_LIST_CNT];
	bus_dmamap_t		dc_tx_map[DC_TX_LIST_CNT];
	u_int32_t		*dc_sbuf;
	u_int8_t		dc_pad[DC_MIN_FRAMELEN];
	int			dc_tx_first;
	int			dc_tx_prod;
	int			dc_tx_cons;
	int			dc_tx_cnt;
	int			dc_rx_prod;
};

struct dc_mediainfo {
	int			dc_media;
	u_int8_t		*dc_gp_ptr;
	u_int8_t		dc_gp_len;
	u_int8_t		*dc_reset_ptr;
	u_int8_t		dc_reset_len;
	struct dc_mediainfo	*dc_next;
};


struct dc_type {
	u_int32_t		dc_devid;
	u_int8_t		dc_minrev;
	char			*dc_name;
};

struct dc_mii_frame {
	u_int8_t		mii_stdelim;
	u_int8_t		mii_opcode;
	u_int8_t		mii_phyaddr;
	u_int8_t		mii_regaddr;
	u_int8_t		mii_turnaround;
	u_int16_t		mii_data;
};

/*
 * MII constants
 */
#define DC_MII_STARTDELIM	0x01
#define DC_MII_READOP		0x02
#define DC_MII_WRITEOP		0x01
#define DC_MII_TURNAROUND	0x02


/*
 * Registers specific to clone devices.
 * This mainly relates to RX filter programming: not all 21x4x clones
 * use the standard DEC filter programming mechanism.
 */

/*
 * ADMtek specific registers and constants for the AL981 and AN983.
 * The AN983 doesn't use the magic PHY registers.
 */
#define DC_AL_CR		0x88	/* command register */
#define DC_AL_PAR0		0xA4	/* station address */
#define DC_AL_PAR1		0xA8	/* station address */
#define DC_AL_MAR0		0xAC	/* multicast hash filter */
#define DC_AL_MAR1		0xB0	/* multicast hash filter */
#define DC_AL_BMCR		0xB4	/* built in PHY control */
#define DC_AL_BMSR		0xB8	/* built in PHY status */
#define DC_AL_VENID		0xBC	/* built in PHY ID0 */
#define DC_AL_DEVID		0xC0	/* built in PHY ID1 */
#define DC_AL_ANAR		0xC4	/* built in PHY autoneg advert */
#define DC_AL_LPAR		0xC8	/* bnilt in PHY link part. ability */
#define DC_AL_ANER		0xCC	/* built in PHY autoneg expansion */

#define DC_AL_CR_ATUR		0x00000001 /* automatic TX underrun recovery */
#define DC_ADMTEK_PHYADDR	0x1
#define DC_AL_EE_NODEADDR	4
/* End of ADMtek specific registers */

/*
 * ASIX specific registers.
 */
#define DC_AX_FILTIDX		0x68    /* RX filter index */
#define DC_AX_FILTDATA		0x70    /* RX filter data */

/*
 * Special ASIX-specific bits in the ASIX NETCFG register (CSR6).
 */
#define DC_AX_NETCFG_RX_BROAD	0x00000100 

/*
 * RX Filter Index Register values
 */
#define DC_AX_FILTIDX_PAR0	0x00000000
#define DC_AX_FILTIDX_PAR1	0x00000001
#define DC_AX_FILTIDX_MAR0	0x00000002
#define DC_AX_FILTIDX_MAR1	0x00000003
/* End of ASIX specific registers */

/*
 * Macronix specific registers. The Macronix chips have a special
 * register for reading the NWAY status, which we don't use, plus
 * a magic packet register, which we need to tweak a bit per the
 * Macronix application notes.
 */
#define DC_MX_MAGICPACKET	0x80
#define DC_MX_NWAYSTAT		0xA0

/*
 * Magic packet register
 */
#define DC_MX_MPACK_DISABLE	0x00400000

/*
 * NWAY status register.
 */
#define DC_MX_NWAY_10BTHALF	0x08000000
#define DC_MX_NWAY_10BTFULL	0x10000000
#define DC_MX_NWAY_100BTHALF	0x20000000
#define DC_MX_NWAY_100BTFULL	0x40000000
#define DC_MX_NWAY_100BT4	0x80000000

/*
 * These are magic values that must be written into CSR16
 * (DC_MX_MAGICPACKET) in order to put the chip into proper
 * operating mode. The magic numbers are documented in the
 * Macronix 98715 application notes.
 */
#define DC_MX_MAGIC_98713	0x0F370000
#define DC_MX_MAGIC_98713A	0x0B3C0000
#define DC_MX_MAGIC_98715	0x0B3C0000
#define DC_MX_MAGIC_98725	0x0B3C0000
/* End of Macronix specific registers */

/*
 * PNIC 82c168/82c169 specific registers.
 * The PNIC has its own special NWAY support, which doesn't work,
 * and shortcut ways of reading the EEPROM and MII bus.
 */
#define DC_PN_GPIO		0x60	/* general purpose pins control */
#define DC_PN_PWRUP_CFG		0x90	/* config register, set by EEPROM */
#define DC_PN_SIOCTL		0x98	/* serial EEPROM control register */
#define DC_PN_MII		0xA0	/* MII access register */
#define DC_PN_NWAY		0xB8	/* Internal NWAY register */

/* Serial I/O EEPROM register */
#define DC_PN_SIOCTL_DATA	0x0000003F
#define DC_PN_SIOCTL_OPCODE	0x00000300
#define DC_PN_SIOCTL_BUSY	0x80000000

#define DC_PN_EEOPCODE_ERASE	0x00000300
#define DC_PN_EEOPCODE_READ	0x00000600
#define DC_PN_EEOPCODE_WRITE	0x00000100

/*
 * The first two general purpose pins control speed selection and
 * 100Mbps loopback on the 82c168 chip. The control bits should always
 * be set (to make the data pins outputs) and the speed selction and
 * loopback bits set accordingly when changing media. Physically, this
 * will set the state of a relay mounted on the card.
 */
#define DC_PN_GPIO_DATA0	0x000000001
#define DC_PN_GPIO_DATA1	0x000000002
#define DC_PN_GPIO_DATA2	0x000000004
#define DC_PN_GPIO_DATA3	0x000000008
#define DC_PN_GPIO_CTL0		0x000000010
#define DC_PN_GPIO_CTL1		0x000000020
#define DC_PN_GPIO_CTL2		0x000000040
#define DC_PN_GPIO_CTL3		0x000000080
#define DC_PN_GPIO_SPEEDSEL	DC_PN_GPIO_DATA0/* 1 == 100Mbps, 0 == 10Mbps */
#define DC_PN_GPIO_100TX_LOOP	DC_PN_GPIO_DATA1/* 1 == normal, 0 == loop */
#define DC_PN_GPIO_BNC_ENB	DC_PN_GPIO_DATA2
#define DC_PN_GPIO_100TX_LNK	DC_PN_GPIO_DATA3
#define DC_PN_GPIO_SETBIT(sc, r)			\
	DC_SETBIT(sc, DC_PN_GPIO, ((r) | (r << 4)))
#define DC_PN_GPIO_CLRBIT(sc, r)			\
	{						\
		DC_SETBIT(sc, DC_PN_GPIO, ((r) << 4));	\
		DC_CLRBIT(sc, DC_PN_GPIO, (r));		\
	}
	
/* shortcut MII access register */
#define DC_PN_MII_DATA		0x0000FFFF
#define DC_PN_MII_RESERVER	0x00020000
#define DC_PN_MII_REGADDR	0x007C0000
#define DC_PN_MII_PHYADDR	0x0F800000
#define DC_PN_MII_OPCODE	0x30000000
#define DC_PN_MII_BUSY		0x80000000

#define DC_PN_MIIOPCODE_READ	0x60020000
#define DC_PN_MIIOPCODE_WRITE	0x50020000

/* Internal NWAY bits */
#define DC_PN_NWAY_RESET	0x00000001	/* reset */
#define DC_PN_NWAY_PDOWN	0x00000002	/* power down */
#define DC_PN_NWAY_BYPASS	0x00000004	/* bypass */
#define DC_PN_NWAY_AUILOWCUR	0x00000008	/* AUI low current */
#define DC_PN_NWAY_TPEXTEND	0x00000010	/* low squelch voltage */
#define DC_PN_NWAY_POLARITY	0x00000020	/* 0 == on, 1 == off */
#define DC_PN_NWAY_TP		0x00000040	/* 1 == tp, 0 == AUI */
#define DC_PN_NWAY_AUIVOLT	0x00000080	/* 1 == full, 0 == half */
#define DC_PN_NWAY_DUPLEX	0x00000100	/* LED, 1 == full, 0 == half */
#define DC_PN_NWAY_LINKTEST	0x00000200	/* 0 == on, 1 == off */
#define DC_PN_NWAY_AUTODETECT	0x00000400	/* 1 == off, 0 == on */
#define DC_PN_NWAY_SPEEDSEL	0x00000800	/* LED, 0 = 10, 1 == 100 */
#define DC_PN_NWAY_NWAY_ENB	0x00001000	/* 0 == off, 1 == on */
#define DC_PN_NWAY_CAP10HDX	0x00002000
#define DC_PN_NWAY_CAP10FDX	0x00004000
#define DC_PN_NWAY_CAP100FDX	0x00008000
#define DC_PN_NWAY_CAP100HDX	0x00010000
#define DC_PN_NWAY_CAP100T4	0x00020000
#define DC_PN_NWAY_ANEGRESTART	0x02000000	/* resets when aneg done */
#define DC_PN_NWAY_REMFAULT	0x04000000
#define DC_PN_NWAY_LPAR10HDX	0x08000000
#define DC_PN_NWAY_LPAR10FDX	0x10000000
#define DC_PN_NWAY_LPAR100FDX	0x20000000
#define DC_PN_NWAY_LPAR100HDX	0x40000000
#define DC_PN_NWAY_LPAR100T4	0x80000000

/* End of PNIC specific registers */

/*
 * CONEXANT specific registers.
 */

#define DC_CONEXANT_PHYADDR	0x1
#define DC_CONEXANT_EE_NODEADDR	0x19A

/* End of CONEXANT specific registers */


struct dc_softc {
	struct ifnet		*dc_ifp;	/* interface info */
	device_t		dc_dev;		/* device info */
	bus_space_handle_t	dc_bhandle;	/* bus space handle */
	bus_space_tag_t		dc_btag;	/* bus space tag */
	bus_dma_tag_t		dc_ltag;	/* tag for descriptor ring */
	bus_dmamap_t		dc_lmap;	/* map for descriptor ring */
	u_int32_t		dc_laddr;	/* DMA address of dc_ldata */
	bus_dma_tag_t		dc_mtag;	/* tag for mbufs */
	bus_dmamap_t		dc_sparemap;
	bus_dma_tag_t		dc_stag;	/* tag for the setup frame */
	bus_dmamap_t		dc_smap;	/* map for the setup frame */
	u_int32_t		dc_saddr;	/* DMA address of setup frame */
	void			*dc_intrhand;
	struct resource		*dc_irq;
	struct resource		*dc_res;
	const struct dc_type	*dc_info;	/* adapter info */
	device_t		dc_miibus;
	u_int8_t		dc_type;
	u_int8_t		dc_pmode;
	u_int8_t		dc_link;
	u_int8_t		dc_cachesize;
	int			dc_romwidth;
	int			dc_pnic_rx_bug_save;
	unsigned char		*dc_pnic_rx_buf;
	int			dc_if_flags;
	int			dc_if_media;
	u_int32_t		dc_flags;
	u_int32_t		dc_txthresh;
	u_int8_t		*dc_srom;
	struct dc_mediainfo	*dc_mi;
	struct dc_list_data	*dc_ldata;
	struct dc_chain_data	dc_cdata;
	struct callout		dc_stat_ch;
	struct callout		dc_wdog_ch;
	int			dc_wdog_timer;
	struct mtx		dc_mtx;
#ifdef DEVICE_POLLING
	int			rxcycles;	/* ... when polling */
#endif
	int			suspended;	/* 0 = normal  1 = suspended */
};


#define	DC_LOCK(_sc)		mtx_lock(&(_sc)->dc_mtx)
#define	DC_UNLOCK(_sc)		mtx_unlock(&(_sc)->dc_mtx)
#define	DC_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->dc_mtx, MA_OWNED)

#define DC_TX_POLL		0x00000001
#define DC_TX_COALESCE		0x00000002
#define DC_TX_ADMTEK_WAR	0x00000004
#define DC_TX_USE_TX_INTR	0x00000008
#define DC_RX_FILTER_TULIP	0x00000010
#define DC_TX_INTR_FIRSTFRAG	0x00000020
#define DC_PNIC_RX_BUG_WAR	0x00000040
#define DC_TX_FIXED_RING	0x00000080
#define DC_TX_STORENFWD		0x00000100
#define DC_REDUCED_MII_POLL	0x00000200
#define DC_TX_INTR_ALWAYS	0x00000400
#define DC_21143_NWAY		0x00000800
#define DC_128BIT_HASH		0x00001000
#define DC_64BIT_HASH		0x00002000
#define DC_TULIP_LEDS		0x00004000
#define DC_TX_ONE		0x00008000
#define DC_TX_ALIGN		0x00010000	/* align mbuf on tx */

/*
 * register space access macros
 */
#define CSR_WRITE_4(sc, reg, val)	\
	bus_space_write_4(sc->dc_btag, sc->dc_bhandle, reg, val)

#define CSR_READ_4(sc, reg)		\
	bus_space_read_4(sc->dc_btag, sc->dc_bhandle, reg)

#define CSR_BARRIER_4(sc, reg, flags)		\
	bus_space_barrier(sc->dc_btag, sc->dc_bhandle, reg, 4, flags)

#define DC_TIMEOUT		1000
#define ETHER_ALIGN		2

/*
 * General constants that are fun to know.
 */

/*
 * DEC PCI vendor ID
 */
#define DC_VENDORID_DEC		0x1011

/*
 * DEC/Intel 21143 PCI device ID
 */
#define DC_DEVICEID_21143	0x0019

/*
 * Macronix PCI vendor ID
 */
#define	DC_VENDORID_MX		0x10D9

/*
 * Macronix PMAC device IDs.
 */
#define DC_DEVICEID_98713	0x0512
#define DC_DEVICEID_987x5	0x0531
#define DC_DEVICEID_98727	0x0532
#define DC_DEVICEID_98732	0x0532

/* Macronix PCI revision codes. */
#define DC_REVISION_98713	0x00
#define DC_REVISION_98713A	0x10
#define DC_REVISION_98715	0x20
#define DC_REVISION_98715AEC_C	0x25
#define DC_REVISION_98725	0x30

/*
 * Compex PCI vendor ID.
 */
#define DC_VENDORID_CP		0x11F6

/*
 * Compex PMAC PCI device IDs.
 */
#define DC_DEVICEID_98713_CP	0x9881

/*
 * Lite-On PNIC PCI vendor ID
 */
#define DC_VENDORID_LO		0x11AD

/*
 * 82c168/82c169 PNIC device IDs. Both chips have the same device
 * ID but different revisions. Revision 0x10 is the 82c168, and
 * 0x20 is the 82c169.
 */
#define DC_DEVICEID_82C168	0x0002

#define DC_REVISION_82C168	0x10
#define DC_REVISION_82C169	0x20

/* 
 * Lite-On PNIC II device ID. Note: this is actually a Macronix 98715A
 * with wake on lan/magic packet support.
 */
#define DC_DEVICEID_82C115	0xc115

/*
 * Davicom vendor ID.
 */
#define DC_VENDORID_DAVICOM	0x1282

/*
 * Davicom device IDs.
 */
#define DC_DEVICEID_DM9009	0x9009
#define DC_DEVICEID_DM9100	0x9100
#define DC_DEVICEID_DM9102	0x9102

/*
 * The DM9102A has the same PCI device ID as the DM9102,
 * but a higher revision code.
 */
#define DC_REVISION_DM9102	0x10
#define DC_REVISION_DM9102A	0x30

/*
 * ADMtek vendor ID.
 */
#define DC_VENDORID_ADMTEK	0x1317

/*
 * ADMtek device IDs.
 */
#define DC_DEVICEID_AL981	0x0981
#define DC_DEVICEID_AN983	0x0985
#define DC_DEVICEID_AN985	0x1985
#define DC_DEVICEID_ADM9511	0x9511
#define DC_DEVICEID_ADM9513	0x9513

/*
 * 3COM PCI vendor ID
 */
#define DC_VENDORID_3COM	0x10b7

/*
 * 3COM OfficeConnect 10/100B (3CSOHO100B-TX)
 */
#define DC_DEVICEID_3CSOHOB	0x9300

/*
 * ASIX vendor ID.
 */
#define DC_VENDORID_ASIX	0x125B

/*
 * ASIX device IDs.
 */
#define DC_DEVICEID_AX88140A	0x1400

/*
 * The ASIX AX88140 and ASIX AX88141 have the same vendor and
 * device IDs but different revision values.
 */
#define DC_REVISION_88140	0x00
#define DC_REVISION_88141	0x10

/*
 * Accton vendor ID.
 */
#define DC_VENDORID_ACCTON	0x1113

/*
 * Accton device IDs.
 */
#define DC_DEVICEID_EN1217	0x1217
#define	DC_DEVICEID_EN2242	0x1216

/*
 * Xircom vendor ID
 */
#define	DC_VENDORID_XIRCOM	0x115d

/*
 * Xircom device IDs.
 */
#define	DC_DEVICEID_X3201	0x0003

/*
 * D-Link vendor ID
 */
#define	DC_VENDORID_DLINK	0x1186

/*
 * D-Link device IDs.
 */
#define	DC_DEVICEID_DRP32TXD	0x1561

/*
 * Abocom vendor ID
 */
#define DC_VENDORID_ABOCOM	0x13d1

/*
 * Abocom device IDs.
 */
#define DC_DEVICEID_FE2500	0xAB02
#define DC_DEVICEID_FE2500MX	0xab08

/*
 * Conexant vendor ID.
 */
#define DC_VENDORID_CONEXANT	0x14f1

/*
 * Conexant device IDs.
 */
#define DC_DEVICEID_RS7112	0x1803

/*
 * Planex vendor ID
 */
#define DC_VENDORID_PLANEX     0x14ea

/*
 * Planex device IDs.
 */
#define DC_DEVICEID_FNW3602T   0xab08

/*
 * Not sure who this vendor should be, so we'll go with HAWKING until
 * I can locate the right one.
 */
#define DC_VENDORID_HAWKING	0x17b3

/*
 * Sure looks like an abocom device ID, but it found on my hawking PN672TX
 * card.  Use that for now, and upgrade later.
 */
#define DC_DEVICEID_HAWKING_PN672TX 0xab08

/*
 * Microsoft device ID.
 */
#define DC_VENDORID_MICROSOFT		0x1414

/*
 * Supported Microsoft PCI and CardBus NICs. These are really
 * ADMtek parts in disguise.
 */

#define DC_DEVICEID_MSMN120	0x0001
#define DC_DEVICEID_MSMN130	0x0002

/*
 * Linksys vendor ID.
 */
#define DC_VENDORID_LINKSYS	0x1737

/*
 * Linksys device IDs.
 */
#define DC_DEVICEID_PCMPC200_AB08	0xab08
#define DC_DEVICEID_PCMPC200_AB09	0xab09

#define	DC_DEVID(vendor, device)	((device) << 16 | (vendor))

/*
 * PCI low memory base and low I/O base register, and
 * other PCI registers.
 */

#define DC_PCI_CFBIO		PCIR_BAR(0)	/* Base I/O address */
#define DC_PCI_CFBMA		PCIR_BAR(1)	/* Base memory address */
#define DC_PCI_CFDD		0x40	/* Device and driver area */
#define DC_PCI_CWUA0		0x44	/* Wake-Up LAN addr 0 */
#define DC_PCI_CWUA1		0x48	/* Wake-Up LAN addr 1 */
#define DC_PCI_SOP0		0x4C	/* SecureON passwd 0 */
#define DC_PCI_SOP1		0x50	/* SecureON passwd 1 */
#define DC_PCI_CWUC		0x54	/* Configuration Wake-Up cmd */

#define DC_21143_PB_REV		0x00000030
#define DC_21143_TB_REV		0x00000030
#define DC_21143_PC_REV		0x00000030
#define DC_21143_TC_REV		0x00000030
#define DC_21143_PD_REV		0x00000041
#define DC_21143_TD_REV		0x00000041

/* Configuration and driver area */
#define DC_CFDD_DRVUSE		0x0000FFFF
#define DC_CFDD_SNOOZE_MODE	0x40000000
#define DC_CFDD_SLEEP_MODE	0x80000000

/* Configuration wake-up command register */
#define DC_CWUC_MUST_BE_ZERO	0x00000001
#define DC_CWUC_SECUREON_ENB	0x00000002
#define DC_CWUC_FORCE_WUL	0x00000004
#define DC_CWUC_BNC_ABILITY	0x00000008
#define DC_CWUC_AUI_ABILITY	0x00000010
#define DC_CWUC_TP10_ABILITY	0x00000020
#define DC_CWUC_MII_ABILITY	0x00000040
#define DC_CWUC_SYM_ABILITY	0x00000080
#define DC_CWUC_LOCK		0x00000100

/*
 * SROM nonsense.
 */

#define DC_IB_CTLRCNT		0x13
#define DC_IB_LEAF0_CNUM	0x1A
#define DC_IB_LEAF0_OFFSET	0x1B

struct dc_info_leaf {
	u_int16_t		dc_conntype;
	u_int8_t		dc_blkcnt;
	u_int8_t		dc_rsvd;
	u_int16_t		dc_infoblk;
};

#define DC_CTYPE_10BT			0x0000
#define DC_CTYPE_10BT_NWAY		0x0100
#define DC_CTYPE_10BT_FDX		0x0204
#define DC_CTYPE_10B2			0x0001
#define DC_CTYPE_10B5			0x0002
#define DC_CTYPE_100BT			0x0003
#define DC_CTYPE_100BT_FDX		0x0205
#define DC_CTYPE_100T4			0x0006
#define DC_CTYPE_100FX			0x0007
#define DC_CTYPE_100FX_FDX		0x0208
#define DC_CTYPE_MII_10BT		0x0009
#define DC_CTYPE_MII_10BT_FDX		0x020A
#define DC_CTYPE_MII_100BT		0x000D
#define DC_CTYPE_MII_100BT_FDX		0x020E
#define DC_CTYPE_MII_100T4		0x000F
#define DC_CTYPE_MII_100FX		0x0010
#define DC_CTYPE_MII_100FX_FDX		0x0211
#define DC_CTYPE_DYN_PUP_AUTOSENSE	0x0800
#define DC_CTYPE_PUP_AUTOSENSE		0x8800
#define DC_CTYPE_NOMEDIA		0xFFFF

#define DC_EBLOCK_SIA			0x0002
#define DC_EBLOCK_MII			0x0003
#define DC_EBLOCK_SYM			0x0004
#define DC_EBLOCK_RESET			0x0005
#define DC_EBLOCK_PHY_SHUTDOWN		0x0006

struct dc_leaf_hdr {
	u_int16_t		dc_mtype;
	u_int8_t		dc_mcnt;
	u_int8_t		dc_rsvd;
};

struct dc_eblock_hdr {
	u_int8_t		dc_len;
	u_int8_t		dc_type;
};

struct dc_eblock_sia {
	struct dc_eblock_hdr	dc_sia_hdr;
	u_int8_t		dc_sia_code;
	union {
		struct dc_sia_ext { /* if (dc_sia_code & DC_SIA_CODE_EXT) */
			u_int8_t dc_sia_mediaspec[6]; /* CSR13, CSR14, CSR15 */
			u_int8_t dc_sia_gpio_ctl[2];
			u_int8_t dc_sia_gpio_dat[2];
		} dc_sia_ext;
		struct dc_sia_noext { 
			u_int8_t dc_sia_gpio_ctl[2];
			u_int8_t dc_sia_gpio_dat[2];
		} dc_sia_noext;
	} dc_un;
};

#define DC_SIA_CODE_10BT	0x00
#define DC_SIA_CODE_10B2	0x01
#define DC_SIA_CODE_10B5	0x02
#define DC_SIA_CODE_10BT_FDX	0x04
#define DC_SIA_CODE_EXT		0x40

/*
 * Note that the first word in the gpr and reset
 * sequences is always a control word.
 */
struct dc_eblock_mii {
	struct dc_eblock_hdr	dc_mii_hdr;
	u_int8_t		dc_mii_phynum;
	u_int8_t		dc_gpr_len;
/*	u_int16_t		dc_gpr_dat[n]; */
/*	u_int8_t		dc_reset_len; */
/*	u_int16_t		dc_reset_dat[n]; */
/* There are other fields after these, but we don't
 * care about them since they can be determined by looking
 * at the PHY.
 */
};

struct dc_eblock_sym {
	struct dc_eblock_hdr	dc_sym_hdr;
	u_int8_t		dc_sym_code;
	u_int8_t		dc_sym_gpio_ctl[2];
	u_int8_t		dc_sym_gpio_dat[2];
	u_int8_t		dc_sym_cmd[2];
};

#define DC_SYM_CODE_100BT	0x03
#define DC_SYM_CODE_100BT_FDX	0x05
#define DC_SYM_CODE_100T4	0x06
#define DC_SYM_CODE_100FX	0x07
#define DC_SYM_CODE_100FX_FDX	0x08

struct dc_eblock_reset {
	struct dc_eblock_hdr	dc_reset_hdr;
	u_int8_t		dc_reset_len;
/*	u_int16_t		dc_reset_dat[n]; */
};