path: root/sys/dev/de/if_devar.h

/*	$NetBSD: if_devar.h,v 1.32 1999/04/01 14:55:25 tsubai Exp $	*/

/* $FreeBSD$ */

/*-
 * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
 *
 * Id: if_devar.h,v 1.28 1997/07/03 16:55:07 thomas Exp
 */

#ifndef DEV_DE_IF_DEVAR_H
#define DEV_DE_IF_DEVAR_H

typedef bus_addr_t tulip_csrptr_t;

#define	TULIP_PCI_CSRSIZE	8
#define	TULIP_PCI_CSROFFSET	0

#define TULIP_CSR_READ(sc, csr)			\
	bus_space_read_4((sc)->tulip_csrs_bst,	\
			 (sc)->tulip_csrs_bsh,	\
			 (sc)->tulip_csrs.csr)
#define TULIP_CSR_WRITE(sc, csr, val)			\
	bus_space_write_4((sc)->tulip_csrs_bst,		\
			  (sc)->tulip_csrs_bsh,		\
			  (sc)->tulip_csrs.csr, val)

/*
 * This structure contains "pointers" for the registers on
 * the various 21x4x chips.  CSR0 through CSR8 are common
 * to all chips.  After that, it gets messy...
 */
typedef struct {
	tulip_csrptr_t	csr_busmode;	/* CSR0 */
	tulip_csrptr_t	csr_txpoll;	/* CSR1 */
	tulip_csrptr_t	csr_rxpoll;	/* CSR2 */
	tulip_csrptr_t	csr_rxlist;	/* CSR3 */
	tulip_csrptr_t	csr_txlist;	/* CSR4 */
	tulip_csrptr_t	csr_status;	/* CSR5 */
	tulip_csrptr_t	csr_command;	/* CSR6 */
	tulip_csrptr_t	csr_intr;	/* CSR7 */
	tulip_csrptr_t	csr_missed_frames;	/* CSR8 */
	tulip_csrptr_t	csr_9;		/* CSR9 */
	tulip_csrptr_t	csr_10;		/* CSR10 */
	tulip_csrptr_t	csr_11;		/* CSR11 */
	tulip_csrptr_t	csr_12;		/* CSR12 */
	tulip_csrptr_t	csr_13;		/* CSR13 */
	tulip_csrptr_t	csr_14;		/* CSR14 */
	tulip_csrptr_t	csr_15;		/* CSR15 */
} tulip_regfile_t;

#define	csr_enetrom		csr_9	/* 21040 */
#define	csr_reserved		csr_10	/* 21040 */
#define	csr_full_duplex		csr_11	/* 21040 */
#define	csr_bootrom		csr_10	/* 21041/21140A/?? */
#define	csr_gp			csr_12	/* 21140* */
#define	csr_watchdog		csr_15	/* 21140* */
#define	csr_gp_timer		csr_11	/* 21041/21140* */
#define	csr_srom_mii		csr_9	/* 21041/21140* */
#define	csr_sia_status		csr_12	/* 2104x */
#define csr_sia_connectivity	csr_13	/* 2104x */
#define csr_sia_tx_rx		csr_14	/* 2104x */
#define csr_sia_general		csr_15	/* 2104x */

/*
 * While 21x4x allows chaining of its descriptors, this driver
 * doesn't take advantage of it.  We keep the descriptors in a
 * traditional FIFO ring.
 */
typedef struct {
	tulip_desc_t	*di_desc;
	struct mbuf	*di_mbuf;
	bus_dmamap_t	*di_map;
} tulip_descinfo_t;

typedef struct {
	tulip_descinfo_t *ri_first;	/* first entry in ring */
	tulip_descinfo_t *ri_last;	/* one after last entry */
	tulip_descinfo_t *ri_nextin;	/* next to processed by host */
	tulip_descinfo_t *ri_nextout;	/* next to processed by adapter */
	int		ri_max;
	int		ri_free;
	tulip_desc_t	*ri_descs;
	tulip_descinfo_t *ri_descinfo;
	bus_dma_tag_t	ri_ring_tag;
	bus_dmamap_t	ri_ring_map;
	bus_addr_t	ri_dma_addr;
	bus_dma_tag_t	ri_data_tag;
	bus_dmamap_t	*ri_data_maps;
} tulip_ringinfo_t;

/*
 * The 21040 has a stupid restriction in that the receive
 * buffers must be longword aligned.  But since Ethernet
 * headers are not a multiple of longwords in size this forces
 * the data to non-longword aligned.  Since IP requires the
 * data to be longword aligned, we need to copy it after it has
 * been DMA'ed in our memory.
 *
 * Since we have to copy it anyways, we might as well as allocate
 * dedicated receive space for the input.  This allows to use a
 * small receive buffer size and more ring entries to be able to
 * better keep with a flood of tiny Ethernet packets.
 *
 * The receive space MUST ALWAYS be a multiple of the page size.
 * And the number of receive descriptors multiplied by the size
 * of the receive buffers must equal the receive space.  This
 * is so that we can manipulate the page tables so that even if a
 * packet wraps around the end of the receive space, we can
 * treat it as virtually contiguous.
 *
 * The above used to be true (the stupid restriction is still true)
 * but we gone to directly DMA'ing into MBUFs (unless it's on an
 * architecture which can't handle unaligned accesses) because with
 * 100Mb/s cards the copying is just too much of a hit.
 */

#define	TULIP_TXTIMER		4
#define	TULIP_RXDESCS		48
#define	TULIP_TXDESCS		128
#define	TULIP_RXQ_TARGET	32
#if TULIP_RXQ_TARGET >= TULIP_RXDESCS
#error	TULIP_RXQ_TARGET must be less than TULIP_RXDESCS
#endif
#define	TULIP_RX_BUFLEN		((MCLBYTES < 2048 ? MCLBYTES : 2048) - 16)

/*
 * Forward reference to make C happy.
 */
typedef struct tulip_softc	tulip_softc_t;

/*
 * Enumeration of the various controllers supported.
 */
typedef enum {
	TULIP_21040,
	TULIP_21041,
	TULIP_21140,
	TULIP_21140A,
	TULIP_21142,
	TULIP_21143,
	TULIP_CHIPID_UNKNOWN
} tulip_chipid_t;

/*
 * Various physical media types supported.
 * BNCAUI is BNC or AUI since on the 21040 you can't really tell
 * which is in use.
 */
typedef enum {
	TULIP_MEDIA_UNKNOWN,
	TULIP_MEDIA_10BASET,
	TULIP_MEDIA_10BASET_FD,
	TULIP_MEDIA_BNC,
	TULIP_MEDIA_AUI,
	TULIP_MEDIA_EXTSIA,
	TULIP_MEDIA_AUIBNC,
	TULIP_MEDIA_100BASETX,
	TULIP_MEDIA_100BASETX_FD,
	TULIP_MEDIA_100BASET4,
	TULIP_MEDIA_100BASEFX,
	TULIP_MEDIA_100BASEFX_FD,
	TULIP_MEDIA_MAX
} tulip_media_t;

#define	TULIP_BIT(b)		(1L << ((int)(b)))
#define	TULIP_FDBIT(m)		(1L << ((int)TULIP_MEDIA_ ## m ## _FD))
#define	TULIP_MBIT(m)		(1L << ((int)TULIP_MEDIA_ ## m ))
#define	TULIP_IS_MEDIA_FD(m)	(TULIP_BIT(m) & \
				 (TULIP_FDBIT(10BASET) | \
				  TULIP_FDBIT(100BASETX) | \
				  TULIP_FDBIT(100BASEFX)))
#define	TULIP_CAN_MEDIA_FD(m)	(TULIP_BIT(m) & \
				 (TULIP_MBIT(10BASET) | \
				  TULIP_MBIT(100BASETX) | \
				  TULIP_MBIT(100BASEFX)))
#define	TULIP_FD_MEDIA_OF(m)	((tulip_media_t)((m) + 1))
#define	TULIP_HD_MEDIA_OF(m)	((tulip_media_t)((m) - 1))
#define	TULIP_IS_MEDIA_100MB(m)	((m) >= TULIP_MEDIA_100BASETX)
#define	TULIP_IS_MEDIA_TP(m)	((TULIP_BIT(m) & \
				  (TULIP_MBIT(BNC) | \
				   TULIP_MBIT(AUI) | \
				   TULIP_MBIT(AUIBNC) | \
				   TULIP_MBIT(EXTSIA))) == 0)

#define	TULIP_SROM_ATTR_MII		0x0100
#define	TULIP_SROM_ATTR_NWAY		0x0200
#define	TULIP_SROM_ATTR_AUTOSENSE	0x0400
#define	TULIP_SROM_ATTR_POWERUP		0x0800
#define	TULIP_SROM_ATTR_NOLINKPASS	0x1000

typedef struct {
	enum {
		TULIP_MEDIAINFO_NONE,
		TULIP_MEDIAINFO_SIA,
		TULIP_MEDIAINFO_GPR,
		TULIP_MEDIAINFO_MII,
		TULIP_MEDIAINFO_RESET,
		TULIP_MEDIAINFO_SYM
	} mi_type;
	union {
		struct {
			u_int16_t sia_connectivity;
			u_int16_t sia_tx_rx;
			u_int16_t sia_general;
			u_int32_t sia_gp_control;	/* 21142/21143 */
			u_int32_t sia_gp_data;		/* 21142/21143 */
		} un_sia;
		struct {
			u_int32_t gpr_cmdmode;
			u_int32_t gpr_gpcontrol;	/* 21142/21143 */
			u_int32_t gpr_gpdata;
			u_int8_t gpr_actmask;
			u_int8_t gpr_actdata;
			u_int gpr_default:1;
		} un_gpr;
		struct {
			u_int32_t mii_mediamask;
			u_int16_t mii_capabilities;
			u_int16_t mii_advertisement;
			u_int16_t mii_full_duplex;
			u_int16_t mii_tx_threshold;
			u_int16_t mii_interrupt;	/* 21142/21143 */
			u_int8_t mii_phyaddr;
			u_int8_t mii_gpr_length;
			u_int8_t mii_gpr_offset;
			u_int8_t mii_reset_length;
			u_int8_t mii_reset_offset;
			u_int32_t mii_phyid;
		} un_mii;
	} mi_un;
} tulip_media_info_t;

#define	mi_sia_connectivity	mi_un.un_sia.sia_connectivity
#define	mi_sia_tx_rx		mi_un.un_sia.sia_tx_rx
#define mi_sia_general		mi_un.un_sia.sia_general
#define	mi_sia_gp_control	mi_un.un_sia.sia_gp_control
#define	mi_sia_gp_data		mi_un.un_sia.sia_gp_data

#define	mi_gpcontrol		mi_un.un_gpr.gpr_gpcontrol
#define	mi_gpdata		mi_un.un_gpr.gpr_gpdata
#define	mi_actmask		mi_un.un_gpr.gpr_actmask
#define	mi_actdata		mi_un.un_gpr.gpr_actdata
#define	mi_default		mi_un.un_gpr.gpr_default
#define	mi_cmdmode		mi_un.un_gpr.gpr_cmdmode

#define	mi_phyaddr		mi_un.un_mii.mii_phyaddr
#define	mi_gpr_length		mi_un.un_mii.mii_gpr_length
#define	mi_gpr_offset		mi_un.un_mii.mii_gpr_offset
#define	mi_reset_length		mi_un.un_mii.mii_reset_length
#define	mi_reset_offset		mi_un.un_mii.mii_reset_offset
#define	mi_capabilities		mi_un.un_mii.mii_capabilities
#define	mi_advertisement	mi_un.un_mii.mii_advertisement
#define	mi_full_duplex		mi_un.un_mii.mii_full_duplex
#define	mi_tx_threshold		mi_un.un_mii.mii_tx_threshold
#define	mi_mediamask		mi_un.un_mii.mii_mediamask
#define	mi_mii_interrupt	mi_un.un_mii.mii_interrupt
#define	mi_phyid		mi_un.un_mii.mii_phyid

#define	TULIP_MEDIAINFO_SIA_INIT(sc, mi, chipid, media) do {		\
	(mi)->mi_type = TULIP_MEDIAINFO_SIA;				\
	sc->tulip_mediums[TULIP_MEDIA_ ## media] = (mi);		\
	(mi)->mi_sia_connectivity = TULIP_ ## chipid ## _SIACONN_ ## media; \
	(mi)->mi_sia_tx_rx = TULIP_ ## chipid ## _SIATXRX_ ## media;	\
	(mi)->mi_sia_general = TULIP_ ## chipid ## _SIAGEN_ ## media;	\
} while (0)

#define TULIP_MEDIAINFO_ADD_CAPABILITY(sc, mi, media) do {		\
	if ((sc)->tulip_mediums[TULIP_MEDIA_ ## media] == NULL		\
	    && ((mi)->mi_capabilities & PHYSTS_ ## media)) {		\
		(sc)->tulip_mediums[TULIP_MEDIA_ ## media] = (mi);	\
		(mi)->mi_mediamask |= TULIP_BIT(TULIP_MEDIA_ ## media);	\
	}								\
} while (0)

#define	TULIP_MII_NOPHY		32
/*
 * Some boards need to treated specially.  The following enumeration
 * identifies the cards with quirks (or those we just want to single
 * out for special merit or scorn).
 */
typedef enum {
	TULIP_21040_GENERIC,	/* Generic 21040 (works with most any board) */
	TULIP_21140_ISV,	/* Digital Semicondutor 21140 ISV SROM Format */
	TULIP_21142_ISV,	/* Digital Semicondutor 21142 ISV SROM Format */
	TULIP_21143_ISV,	/* Digital Semicondutor 21143 ISV SROM Format */
	TULIP_21140_DEC_EB,	/* Digital Semicondutor 21140 Eval. Board */
	TULIP_21140_MII,	/* 21140[A] with MII */
	TULIP_21140_DEC_DE500,	/* Digital DE500-?? 10/100 */
	TULIP_21140_SMC_9332,	/* SMC 9332 */
	TULIP_21140_COGENT_EM100,	/* Cogent EM100 100 only */
	TULIP_21140_ZNYX_ZX34X,	/* ZNYX ZX342 10/100 */
	TULIP_21140_ASANTE,	/* AsanteFast 10/100 */
	TULIP_21140_EN1207,	/* Accton EN2107 10/100 BNC */
	TULIP_21041_GENERIC	/* Generic 21041 card */
} tulip_board_t;

typedef enum {
	TULIP_MEDIAPOLL_TIMER,		/* 100ms timer fired */
	TULIP_MEDIAPOLL_FASTTIMER,	/* <100ms timer fired */
	TULIP_MEDIAPOLL_LINKFAIL,	/* called from interrupt routine */
	TULIP_MEDIAPOLL_LINKPASS,	/* called from interrupt routine */
	TULIP_MEDIAPOLL_START,		/* start a media probe (from reset) */
	TULIP_MEDIAPOLL_TXPROBE_OK,	/* txprobe succeeded */
	TULIP_MEDIAPOLL_TXPROBE_FAILED,	/* txprobe failed */
	TULIP_MEDIAPOLL_MAX
} tulip_mediapoll_event_t;

typedef enum {
	TULIP_LINK_DOWN,	/* Link is down */
	TULIP_LINK_UP,		/* link is ok */
	TULIP_LINK_UNKNOWN	/* we can't tell either way */
} tulip_link_status_t;

/*
 * This data structure is used to abstract out the quirks.
 * media_probe  = tries to determine the media type.
 * media_select = enables the current media (or autosenses)
 * media_poll	= autosenses media
 * media_preset = 21140, etal requires bit to set before the
 *		  the software reset; hence pre-set.  Should be
 *		  pre-reset but that's ugly.
 */
typedef struct {
	tulip_board_t bd_type;
	void (*bd_media_probe)(tulip_softc_t * const sc);
	void (*bd_media_select)(tulip_softc_t * const sc);
	void (*bd_media_poll)(tulip_softc_t * const sc,
    tulip_mediapoll_event_t event);
	void (*bd_media_preset) (tulip_softc_t * const sc);
} tulip_boardsw_t;

/*
 * The next few declarations are for MII/PHY based boards.
 *
 *    The first enumeration identifies a superset of various datums
 * that can be obtained from various PHY chips.  Not all PHYs will
 * support all datums.
 *    The modedata structure indicates what register contains
 * a datum, what mask is applied the register contents, and what the
 * result should be.
 *    The attr structure records information about a supported PHY.
 *    The phy structure records information about a PHY instance.
 */
typedef enum {
	PHY_MODE_10T,
	PHY_MODE_100TX,
	PHY_MODE_100T4,
	PHY_MODE_FULLDUPLEX,
	PHY_MODE_MAX
} tulip_phy_mode_t;

typedef struct {
	u_int16_t	pm_regno;
	u_int16_t	pm_mask;
	u_int16_t	pm_value;
} tulip_phy_modedata_t;

typedef struct {
	u_int32_t	attr_id;
	u_int16_t	attr_flags;
	tulip_phy_modedata_t	attr_modes[PHY_MODE_MAX];
#ifdef TULIP_DEBUG
	const char	*attr_name;
#endif
} tulip_phy_attr_t;

/* Definitions for tulip_phy_attr_t.attr_flags */
#define	PHY_NEED_HARD_RESET	0x0001
#define	PHY_DUAL_CYCLE_TA	0x0002

/*
 * Various probe states used when trying to autosense the media.
 */
typedef enum {
	TULIP_PROBE_INACTIVE,
	TULIP_PROBE_PHYRESET,
	TULIP_PROBE_PHYAUTONEG,
	TULIP_PROBE_GPRTEST,
	TULIP_PROBE_MEDIATEST,
	TULIP_PROBE_FAILED
} tulip_probe_state_t;

typedef struct {
	/*
	 * Transmit Statistics
	 */
	u_int32_t	dot3StatsSingleCollisionFrames;
	u_int32_t	dot3StatsMultipleCollisionFrames;
	u_int32_t	dot3StatsSQETestErrors;
	u_int32_t	dot3StatsDeferredTransmissions;
	u_int32_t	dot3StatsLateCollisions;
	u_int32_t	dot3StatsExcessiveCollisions;
	u_int32_t	dot3StatsCarrierSenseErrors;
	u_int32_t	dot3StatsInternalMacTransmitErrors;
	/* not in rfc1650! */
	u_int32_t	dot3StatsInternalTransmitUnderflows;
	/* not in rfc1650! */
	u_int32_t	dot3StatsInternalTransmitBabbles;
	/*
	 * Receive Statistics
	 */
	u_int32_t	dot3StatsMissedFrames;	/* not in rfc1650! */
	u_int32_t	dot3StatsAlignmentErrors;
	u_int32_t	dot3StatsFCSErrors;
	u_int32_t	dot3StatsFrameTooLongs;
	u_int32_t	dot3StatsInternalMacReceiveErrors;
} tulip_dot3_stats_t;

/*
 * Probe information.
 */
struct tulip_probe_info {
	u_int8_t	probe_count;		/* count of probe operations */
	int32_t		probe_timeout;		/* time (ms) of probe timeout */
	tulip_probe_state_t	probe_state;	/* current media probe state */
	tulip_media_t	probe_media;		/* current media being probed */
	u_int32_t	probe_mediamask;	/* medias checked */
	u_int32_t	probe_passes;		/* times autosense failed */
	u_int32_t	probe_txprobes;		/* txprobes attempted */
};

/*
 * Debugging/Statistical information.
 */
struct tulip_dbg_info {
	tulip_media_t	dbg_last_media;
	u_int32_t	dbg_intrs;
	u_int32_t	dbg_media_probes;
	u_int32_t	dbg_txprobe_nocarr;
	u_int32_t	dbg_txprobe_exccoll;
	u_int32_t	dbg_link_downed;
	u_int32_t	dbg_link_suspected;
	u_int32_t	dbg_link_intrs;
	u_int32_t	dbg_link_pollintrs;
	u_int32_t	dbg_link_failures;
	u_int32_t	dbg_nway_starts;
	u_int32_t	dbg_nway_failures;
	u_int16_t	dbg_phyregs[32][4];
	u_int32_t	dbg_rxlowbufs;
	u_int32_t	dbg_rxintrs;
	u_int32_t	dbg_last_rxintrs;
	u_int32_t	dbg_high_rxintrs_hz;
	u_int32_t	dbg_no_txmaps;
	u_int32_t	dbg_txput_finishes[8];
	u_int32_t	dbg_txprobes_ok[TULIP_MEDIA_MAX];
	u_int32_t	dbg_txprobes_failed[TULIP_MEDIA_MAX];
	u_int32_t	dbg_events[TULIP_MEDIAPOLL_MAX];
	u_int32_t	dbg_rxpktsperintr[TULIP_RXDESCS];
};

/*
 * Performance statistics.
 */
struct tulip_perfstat {
	u_quad_t	perf_intr_cycles;
	u_quad_t	perf_ifstart_cycles;
	u_quad_t	perf_ifstart_one_cycles;
	u_quad_t	perf_ifioctl_cycles;
	u_quad_t	perf_stat_cycles;
	u_quad_t	perf_timeout_cycles;
	u_quad_t	perf_txput_cycles;
	u_quad_t	perf_txintr_cycles;
	u_quad_t	perf_rxintr_cycles;
	u_quad_t	perf_rxget_cycles;
	unsigned int	perf_intr;
	unsigned int	perf_ifstart;
	unsigned int	perf_ifstart_one;
	unsigned int	perf_ifioctl;
	unsigned int	perf_stat;
	unsigned int	perf_timeout;
	unsigned int	perf_txput;
	unsigned int	perf_txintr;
	unsigned int	perf_rxintr;
	unsigned int	perf_rxget;
};
#define	TULIP_PERF_CURRENT	0
#define	TULIP_PERF_PREVIOUS	1
#define	TULIP_PERF_TOTAL	2
#define	TULIP_PERF_MAX		3

/*
 * Per-driver-instance state.
 */
struct tulip_softc {
	device_t		tulip_dev;
	struct ifmedia		tulip_ifmedia;
	int			tulip_unit;
	struct ifnet		*tulip_ifp;
	u_char			tulip_enaddr[ETHER_ADDR_LEN];
	bus_space_tag_t		tulip_csrs_bst;
	bus_space_handle_t	tulip_csrs_bsh;
	tulip_regfile_t		tulip_csrs;

	u_int32_t		tulip_flags;
	u_int32_t		tulip_features;
	u_int32_t		tulip_intrmask;
	u_int32_t		tulip_cmdmode;
	u_int32_t		tulip_last_system_error:3;
	u_int32_t		tulip_txtimer:3;	/* transmission timer */
	u_int32_t		tulip_system_errors;
	u_int32_t		tulip_statusbits;	/* status bits from
							 * CSR5 that may need
							 * to be printed
							 */
	tulip_media_info_t	*tulip_mediums[TULIP_MEDIA_MAX];
	tulip_media_t		tulip_media;		/* current media type */
	u_int32_t		tulip_abilities;	/* remote system's
							 * abilities (as
							 * defined in IEEE
							 * 802.3u)
							 */
	u_int8_t		tulip_revinfo;		/* chip revision */
	u_int8_t		tulip_phyaddr;		/* current phy */
	u_int8_t		tulip_gpinit;		/* active pins on
							 * 21140
							 */
	u_int8_t		tulip_gpdata;	/* default gpdata for 21140 */
	struct tulip_probe_info	tulip_probe;
	tulip_chipid_t		tulip_chipid;	/* type of chip we are using */
	const tulip_boardsw_t	*tulip_boardsw;	/* board/chip characteristics */
	tulip_softc_t		*tulip_slaves;	/* slaved devices (ZX3xx) */
#if defined(TULIP_DEBUG)
	struct tulip_dbg_info	tulip_dbg;
#endif
#if defined(TULIP_PERFSTATS)
	struct tulip_perfstat	tulip_perfstats[TULIP_PERF_MAX];
#endif
	tulip_dot3_stats_t	tulip_dot3stats;
	tulip_ringinfo_t	tulip_rxinfo;
	tulip_ringinfo_t	tulip_txinfo;
	tulip_media_info_t	tulip_mediainfo[10];
	/*
	 * The setup buffers for sending the setup frame to the chip. one is
	 * the one being sent while the other is the one being filled.
	 */
	bus_dma_tag_t		tulip_setup_tag;
	bus_dmamap_t		tulip_setup_map;
	bus_addr_t		tulip_setup_dma_addr;
	u_int32_t		*tulip_setupbuf;
	u_int32_t		tulip_setupdata[192 / sizeof(u_int32_t)];
	char			tulip_boardid[24];
	u_int8_t		tulip_rombuf[128];	/* must be aligned */

	/* needed for multiport boards */
	u_int8_t		tulip_pci_busno;
	u_int8_t		tulip_pci_devno;

	u_int8_t		tulip_connidx;
	tulip_srom_connection_t	tulip_conntype;
	struct callout		tulip_callout;
	struct mtx		tulip_mutex;
	struct callout	tulip_stat_timer;
};

#define	tulip_curperfstats	tulip_perfstats[TULIP_PERF_CURRENT]
#define	tulip_probe_count	tulip_probe.probe_count
#define	tulip_probe_timeout	tulip_probe.probe_timeout
#define	tulip_probe_state	tulip_probe.probe_state
#define	tulip_probe_media	tulip_probe.probe_media
#define	tulip_probe_mediamask	tulip_probe.probe_mediamask
#define	tulip_probe_passes	tulip_probe.probe_passes

/* Definitions for tulip_flags. */
#define	TULIP_WANTSETUP		0x00000001
#define	TULIP_WANTHASHPERFECT	0x00000002
#define	TULIP_WANTHASHONLY	0x00000004
#define	TULIP_DOINGSETUP	0x00000008
#define	TULIP_PRINTMEDIA	0x00000010
#define	TULIP_TXPROBE_ACTIVE	0x00000020
#define	TULIP_ALLMULTI		0x00000040
#define	TULIP_WANTRXACT		0x00000080
#define	TULIP_RXACT		0x00000100
#define	TULIP_INRESET		0x00000200
#define	TULIP_NEEDRESET		0x00000400
#define	TULIP_SQETEST		0x00000800
#define	TULIP_xxxxxx0		0x00001000
#define	TULIP_xxxxxx1		0x00002000
#define	TULIP_WANTTXSTART	0x00004000
#define	TULIP_NEWTXTHRESH	0x00008000
#define	TULIP_NOAUTOSENSE	0x00010000
#define	TULIP_PRINTLINKUP	0x00020000
#define	TULIP_LINKUP		0x00040000
#define	TULIP_RXBUFSLOW		0x00080000
#define	TULIP_NOMESSAGES	0x00100000
#define	TULIP_SYSTEMERROR	0x00200000
#define	TULIP_TIMEOUTPENDING	0x00400000
#define	TULIP_xxxxxx2		0x00800000
#define	TULIP_TRYNWAY		0x01000000
#define	TULIP_DIDNWAY		0x02000000
#define	TULIP_RXIGNORE		0x04000000
#define	TULIP_PROBE1STPASS	0x08000000
#define	TULIP_DEVICEPROBE	0x10000000
#define	TULIP_PROMISC		0x20000000
#define	TULIP_HASHONLY		0x40000000
#define	TULIP_xxxxxx3		0x80000000

/* Definitions for tulip_features. */
#define	TULIP_HAVE_GPR		0x00000001	/* have gp register (140[A]) */
#define	TULIP_HAVE_RXBADOVRFLW	0x00000002	/* RX corrupts on overflow */
#define	TULIP_HAVE_POWERMGMT	0x00000004	/* Snooze/sleep modes */
#define	TULIP_HAVE_MII		0x00000008	/* Some medium on MII */
#define	TULIP_HAVE_SIANWAY	0x00000010	/* SIA does NWAY */
#define	TULIP_HAVE_DUALSENSE	0x00000020	/* SIA senses both AUI & TP */
#define	TULIP_HAVE_SIAGP	0x00000040	/* SIA has a GP port */
#define	TULIP_HAVE_BROKEN_HASH	0x00000080	/* Broken Multicast Hash */
#define	TULIP_HAVE_ISVSROM	0x00000100	/* uses ISV SROM Format */
#define	TULIP_HAVE_BASEROM	0x00000200	/* Board ROM can be cloned */
#define	TULIP_HAVE_SLAVEDROM	0x00000400	/* Board ROM cloned */
#define	TULIP_HAVE_SLAVEDINTR	0x00000800	/* Board slaved interrupt */
#define	TULIP_HAVE_SHAREDINTR	0x00001000	/* Board shares interrupts */
#define	TULIP_HAVE_OKROM	0x00002000	/* ROM was recognized */
#define	TULIP_HAVE_NOMEDIA	0x00004000	/* did not detect any media */
#define	TULIP_HAVE_STOREFWD	0x00008000	/* have CMD_STOREFWD */
#define	TULIP_HAVE_SIA100	0x00010000	/* has LS100 in SIA status */
#define	TULIP_HAVE_OKSROM	0x00020000	/* SROM CRC is OK */

#define	TULIP_DO_AUTOSENSE(sc)	\
	(IFM_SUBTYPE((sc)->tulip_ifmedia.ifm_media) == IFM_AUTO)

#if defined(TULIP_HDR_DATA)
static const char *const tulip_chipdescs[] = {
	"21040 [10Mb/s]",
	"21041 [10Mb/s]",
	"21140 [10-100Mb/s]",
	"21140A [10-100Mb/s]",
	"21142 [10-100Mb/s]",
	"21143 [10-100Mb/s]",
};

static const char *const tulip_mediums[] = {
	"unknown",		/* TULIP_MEDIA_UNKNOWN */
	"10baseT",		/* TULIP_MEDIA_10BASET */
	"Full Duplex 10baseT",	/* TULIP_MEDIA_10BASET_FD */
	"BNC",			/* TULIP_MEDIA_BNC */
	"AUI",			/* TULIP_MEDIA_AUI */
	"External SIA",		/* TULIP_MEDIA_EXTSIA */
	"AUI/BNC",		/* TULIP_MEDIA_AUIBNC */
	"100baseTX",		/* TULIP_MEDIA_100BASET */
	"Full Duplex 100baseTX",/* TULIP_MEDIA_100BASET_FD */
	"100baseT4",		/* TULIP_MEDIA_100BASET4 */
	"100baseFX",		/* TULIP_MEDIA_100BASEFX */
	"Full Duplex 100baseFX",/* TULIP_MEDIA_100BASEFX_FD */
};

static const int tulip_media_to_ifmedia[] = {
	IFM_ETHER | IFM_NONE,		/* TULIP_MEDIA_UNKNOWN */
	IFM_ETHER | IFM_10_T,		/* TULIP_MEDIA_10BASET */
	IFM_ETHER | IFM_10_T | IFM_FDX,	/* TULIP_MEDIA_10BASET_FD */
	IFM_ETHER | IFM_10_2,		/* TULIP_MEDIA_BNC */
	IFM_ETHER | IFM_10_5,		/* TULIP_MEDIA_AUI */
	IFM_ETHER | IFM_MANUAL,		/* TULIP_MEDIA_EXTSIA */
	IFM_ETHER | IFM_10_5,		/* TULIP_MEDIA_AUIBNC */
	IFM_ETHER | IFM_100_TX,		/* TULIP_MEDIA_100BASET */
	IFM_ETHER | IFM_100_TX | IFM_FDX,	/* TULIP_MEDIA_100BASET_FD */
	IFM_ETHER | IFM_100_T4,		/* TULIP_MEDIA_100BASET4 */
	IFM_ETHER | IFM_100_FX,		/* TULIP_MEDIA_100BASEFX */
	IFM_ETHER | IFM_100_FX | IFM_FDX,	/* TULIP_MEDIA_100BASEFX_FD */
};

static const char *const tulip_system_errors[] = {
	"parity error",
	"master abort",
	"target abort",
	"reserved #3",
	"reserved #4",
	"reserved #5",
	"reserved #6",
	"reserved #7",
};

static const char *const tulip_status_bits[] = {
	NULL,
	"transmit process stopped",
	NULL,
	"transmit jabber timeout",

	NULL,
	"transmit underflow",
	NULL,
	"receive underflow",

	"receive process stopped",
	"receive watchdog timeout",
	NULL,
	NULL,

	"link failure",
	NULL,
	NULL,
};

static const struct {
	tulip_srom_connection_t sc_type;
	tulip_media_t sc_media;
	u_int32_t sc_attrs;
} tulip_srom_conninfo[] = {
	{
		TULIP_SROM_CONNTYPE_10BASET, TULIP_MEDIA_10BASET
	},
	{
		TULIP_SROM_CONNTYPE_BNC, TULIP_MEDIA_BNC
	},
	{
		TULIP_SROM_CONNTYPE_AUI, TULIP_MEDIA_AUI
	},
	{
		TULIP_SROM_CONNTYPE_100BASETX, TULIP_MEDIA_100BASETX
	},
	{
		TULIP_SROM_CONNTYPE_100BASET4, TULIP_MEDIA_100BASET4
	},
	{
		TULIP_SROM_CONNTYPE_100BASEFX, TULIP_MEDIA_100BASEFX
	},
	{
		TULIP_SROM_CONNTYPE_MII_10BASET, TULIP_MEDIA_10BASET,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_MII_100BASETX, TULIP_MEDIA_100BASETX,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_MII_100BASET4, TULIP_MEDIA_100BASET4,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_MII_100BASEFX, TULIP_MEDIA_100BASEFX,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_10BASET_NWAY, TULIP_MEDIA_10BASET,
		TULIP_SROM_ATTR_NWAY
	},
	{
		TULIP_SROM_CONNTYPE_10BASET_FD, TULIP_MEDIA_10BASET_FD
	},
	{
		TULIP_SROM_CONNTYPE_MII_10BASET_FD, TULIP_MEDIA_10BASET_FD,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_100BASETX_FD, TULIP_MEDIA_100BASETX_FD
	},
	{
		TULIP_SROM_CONNTYPE_MII_100BASETX_FD, TULIP_MEDIA_100BASETX_FD,
		TULIP_SROM_ATTR_MII
	},
	{
		TULIP_SROM_CONNTYPE_10BASET_NOLINKPASS, TULIP_MEDIA_10BASET,
		TULIP_SROM_ATTR_NOLINKPASS
	},
	{
		TULIP_SROM_CONNTYPE_AUTOSENSE, TULIP_MEDIA_UNKNOWN,
		TULIP_SROM_ATTR_AUTOSENSE
	},
	{
		TULIP_SROM_CONNTYPE_AUTOSENSE_POWERUP, TULIP_MEDIA_UNKNOWN,
		TULIP_SROM_ATTR_AUTOSENSE | TULIP_SROM_ATTR_POWERUP
	},
	{
		TULIP_SROM_CONNTYPE_AUTOSENSE_NWAY, TULIP_MEDIA_UNKNOWN,
		TULIP_SROM_ATTR_AUTOSENSE | TULIP_SROM_ATTR_NWAY
	},
	{
		TULIP_SROM_CONNTYPE_NOT_USED, TULIP_MEDIA_UNKNOWN
	}
};
#define	TULIP_SROM_LASTCONNIDX	\
		(sizeof(tulip_srom_conninfo)/sizeof(tulip_srom_conninfo[0]) - 1)

static const struct {
	tulip_media_t sm_type;
	tulip_srom_media_t sm_srom_type;
} tulip_srom_mediums[] = {
	{
		TULIP_MEDIA_100BASEFX_FD, TULIP_SROM_MEDIA_100BASEFX_FD
	},
	{
		TULIP_MEDIA_100BASEFX, TULIP_SROM_MEDIA_100BASEFX
	},
	{
		TULIP_MEDIA_100BASET4, TULIP_SROM_MEDIA_100BASET4
	},
	{
		TULIP_MEDIA_100BASETX_FD, TULIP_SROM_MEDIA_100BASETX_FD
	},
	{
		TULIP_MEDIA_100BASETX, TULIP_SROM_MEDIA_100BASETX
	},
	{
		TULIP_MEDIA_10BASET_FD, TULIP_SROM_MEDIA_10BASET_FD
	},
	{
		TULIP_MEDIA_AUI, TULIP_SROM_MEDIA_AUI
	},
	{
		TULIP_MEDIA_BNC, TULIP_SROM_MEDIA_BNC
	},
	{
		TULIP_MEDIA_10BASET, TULIP_SROM_MEDIA_10BASET
	},
	{
		TULIP_MEDIA_UNKNOWN
	}
};

#endif				/* TULIP_HDR_DATA */

/*
 * Macro to encode 16 bits of a MAC address into the setup buffer.  Since
 * we are casting the two bytes in the char array to a uint16 and then
 * handing them to this macro, we don't need to swap the bytes in the big
 * endian case, just shift them left 16.
 */
#if BYTE_ORDER == BIG_ENDIAN
#define	TULIP_SP_MAC(x)		((x) << 16)
#else
#define	TULIP_SP_MAC(x)		(x)
#endif

/*
 * This driver supports a maximum of 32 tulip boards.
 * This should be enough for the forseeable future.
 */
#define	TULIP_MAX_DEVICES	32

#define	_TULIP_DESC_SYNC(ri, op)					\
	bus_dmamap_sync((ri)->ri_ring_tag, (ri)->ri_ring_map, (op))
#define	_TULIP_MAP_SYNC(ri, di, op)					\
	bus_dmamap_sync((ri)->ri_data_tag, *(di)->di_map, (op))

/*
 * Descriptors are both read from and written to by the card (corresponding
 * to DMA WRITE and READ operations in bus-dma speak).  Receive maps are
 * written to by the card (a DMA READ operation in bus-dma) and transmit
 * buffers are read from by the card (a DMA WRITE operation in bus-dma).
 */
#define TULIP_RXDESC_PRESYNC(ri)					\
	_TULIP_DESC_SYNC(ri, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
#define TULIP_RXDESC_POSTSYNC(ri)					\
	_TULIP_DESC_SYNC(ri, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
#define	TULIP_RXMAP_PRESYNC(ri, di)					\
	_TULIP_MAP_SYNC(ri, di, BUS_DMASYNC_PREREAD)
#define	TULIP_RXMAP_POSTSYNC(ri, di)					\
	_TULIP_MAP_SYNC(ri, di, BUS_DMASYNC_POSTREAD)
#define TULIP_TXDESC_PRESYNC(ri)					\
	_TULIP_DESC_SYNC(ri, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
#define TULIP_TXDESC_POSTSYNC(ri)					\
	_TULIP_DESC_SYNC(ri, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
#define	TULIP_TXMAP_PRESYNC(ri, di)					\
	_TULIP_MAP_SYNC(ri, di, BUS_DMASYNC_PREWRITE)
#define	TULIP_TXMAP_POSTSYNC(ri, di)					\
	_TULIP_MAP_SYNC(ri, di, BUS_DMASYNC_POSTWRITE)

#ifdef notyet
#define	SIOCGADDRROM		_IOW('i', 240, struct ifreq)	/* get 128 bytes of ROM */
#define	SIOCGCHIPID		_IOWR('i', 241, struct ifreq)	/* get chipid */
#endif

#if defined(TULIP_HDR_DATA)
static tulip_softc_t	*tulips[TULIP_MAX_DEVICES];
#endif

#define	loudprintf			if (bootverbose) printf

#if defined(TULIP_PERFSTATS)
#define	TULIP_PERFMERGE(sc, member) \
	do { (sc)->tulip_perfstats[TULIP_PERF_TOTAL].member \
	     += (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member; \
	 (sc)->tulip_perfstats[TULIP_PERF_PREVIOUS].member \
	      = (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member; \
	    (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member = 0; } while (0)
#define	TULIP_PERFSTART(name) const tulip_cycle_t perfstart_ ## name = TULIP_PERFREAD();
#define	TULIP_PERFEND(name)	do { \
	    (sc)->tulip_curperfstats.perf_ ## name ## _cycles += TULIP_PERFDIFF(perfstart_ ## name, TULIP_PERFREAD()); \
	    (sc)->tulip_curperfstats.perf_ ## name ++; \
	} while (0)

typedef u_long tulip_cycle_t;

static __inline tulip_cycle_t
TULIP_PERFREAD(void)
{
	return (get_cyclecount());
}

#define	TULIP_PERFDIFF(s, f)	((f) - (s))
#else
#define	TULIP_PERFSTART(name)
#define	TULIP_PERFEND(name)	do { } while (0)
#define	TULIP_PERFMERGE(s,n)	do { } while (0)
#endif	/* TULIP_PERFSTATS */

#define	TULIP_CRC32_POLY	0xEDB88320UL	/* CRC-32 Poly -- Little
						 * Endian */
#define	TULIP_MAX_TXSEG		30
#define	TULIP_MAX_FRAGS		2

#define	TULIP_ADDREQUAL(a1, a2) \
	(((u_int16_t *)a1)[0] == ((u_int16_t *)a2)[0] \
	 && ((u_int16_t *)a1)[1] == ((u_int16_t *)a2)[1] \
	 && ((u_int16_t *)a1)[2] == ((u_int16_t *)a2)[2])
#define	TULIP_ADDRBRDCST(a1) \
	(((u_int16_t *)a1)[0] == 0xFFFFU \
	 && ((u_int16_t *)a1)[1] == 0xFFFFU \
	 && ((u_int16_t *)a1)[2] == 0xFFFFU)

#define	TULIP_MUTEX(sc)		(&(sc)->tulip_mutex)
#define	TULIP_LOCK(sc)		mtx_lock(TULIP_MUTEX(sc))
#define	TULIP_UNLOCK(sc)	mtx_unlock(TULIP_MUTEX(sc))
#define	TULIP_LOCK_ASSERT(sc)	mtx_assert(TULIP_MUTEX(sc), MA_OWNED)

#endif	/* DEV_DE_IF_DEVAR_H */