/*	$NetBSD: cs89x0var.h,v 1.4 2003/01/06 13:05:10 wiz Exp $	*/

/*
 * Copyright 1997
 * Digital Equipment Corporation. All rights reserved.
 *
 * This software is furnished under license and may be used and
 * copied only in accordance with the following terms and conditions.
 * Subject to these conditions, you may download, copy, install,
 * use, modify and distribute this software in source and/or binary
 * form. No title or ownership is transferred hereby.
 *
 * 1) Any source code used, modified or distributed must reproduce
 *    and retain this copyright notice and list of conditions as
 *    they appear in the source file.
 *
 * 2) No right is granted to use any trade name, trademark, or logo of
 *    Digital Equipment Corporation. Neither the "Digital Equipment
 *    Corporation" name nor any trademark or logo of Digital Equipment
 *    Corporation may be used to endorse or promote products derived
 *    from this software without the prior written permission of
 *    Digital Equipment Corporation.
 *
 * 3) This software is provided "AS-IS" and any express or implied
 *    warranties, including but not limited to, any implied warranties
 *    of merchantability, fitness for a particular purpose, or
 *    non-infringement are disclaimed. In no event shall DIGITAL be
 *    liable for any damages whatsoever, and in particular, DIGITAL
 *    shall not be liable for special, indirect, consequential, or
 *    incidental damages or damages for lost profits, loss of
 *    revenue or loss of use, whether such damages arise in contract,
 *    negligence, tort, under statute, in equity, at law or otherwise,
 *    even if advised of the possibility of such damage.
 */

/*
**++
**  FACILITY  Crystal CS8900 Ethernet driver header file
**
**  ABSTRACT
**
**     This module provides CS8900 driver softc and related definitions
**
**  AUTHORS
**
**     Peter Dettori   SEA - Software Engineering.
**
**  CREATION DATE:
**
**       13-Feb-1997.
**
**  MODIFICATION HISTORY:
**
**--
*/

#ifndef _DEV_IC_CS89X0VAR_H_
#define	_DEV_IC_CS89X0VAR_H_

/*
 * Ethernet software status per interface.
 *
 * Each interface is referenced by a network interface structure,
 * arpcom.ac_if, which the routing code uses to locate the interface.
 * This structure contains the output queue for the interface, 
 * its address, ...
 */
struct cs_softc {
	struct device sc_dev;		/* base device glue */
	struct ethercom sc_ethercom;	/* Ethernet common */
	struct ifmedia sc_media;	/* media control structures */

	void	*sc_ih;			/* interrupt handler */
	void 	*sc_sh;			/* shutdown hook */

	bus_space_tag_t sc_iot;		/* bus space tag for IO */
	bus_space_tag_t sc_memt;	/* bus space tag for memory mode */
	bus_space_handle_t sc_ioh;	/* bus space handles */
	bus_space_handle_t sc_memh;

#if 0
	isa_chipset_tag_t sc_ic;	/* ISA chipset */
#endif

	int	sc_irq;			/* IRQ line */

	int	sc_prodid;		/* saved product ID */
	int	sc_prodrev;		/* saved product rev */

	bus_addr_t sc_pktpgaddr;	/* PacketPage bus memory address */

	int	sc_cfgflags;		/* software configuration flags */

	int	sc_memorymode;		/* are we in memory mode? */
	int	sc_txbusy;		/* transmit in progress */
	int	sc_resetting;		/* reset in progress */

	int	sc_xe_ent;		/* current early-xmit table entry */
	int	sc_xe_togo;		/* # of packets to go at this ent */

	int	sc_carrier;		/* has carrier */

	u_int8_t sc_enaddr[ETHER_ADDR_LEN];	/* MAC address */

#if NRND > 0
	rndsource_element_t rnd_source; /* random source */
#endif

	/* power management */
	int (*sc_enable)(struct cs_softc *);
	void (*sc_disable)(struct cs_softc *);
	void *sc_powerhook;

	/* dma hooks */
	void (*sc_dma_process_rx)(struct cs_softc *);
	void (*sc_dma_chipinit)(struct cs_softc *);
	void (*sc_dma_attach)(struct cs_softc *);

	/* register access hooks */
	u_int8_t (*sc_io_read_1)(struct cs_softc *, bus_size_t);
	u_int16_t (*sc_io_read_2)(struct cs_softc *, bus_size_t);
	void (*sc_io_read_multi_2)(struct cs_softc *, bus_size_t, u_int16_t *,
				bus_size_t);
	void (*sc_io_write_2)(struct cs_softc *, bus_size_t, u_int16_t);
	void (*sc_io_write_multi_2)(struct cs_softc *, bus_size_t,
				 const u_int16_t *, bus_size_t);
	u_int16_t (*sc_mem_read_2)(struct cs_softc *, bus_size_t);
	void (*sc_mem_write_2)(struct cs_softc *, bus_size_t, u_int16_t);
	void (*sc_mem_write_region_2)(struct cs_softc *, bus_size_t,
				      const u_int16_t *, bus_size_t);
};

#define IO_READ_1(sc, a) \
	(sc)->sc_io_read_1 ? \
		(sc)->sc_io_read_1((sc), (a)) : \
		bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, (a))
#define IO_READ_2(sc, a) \
	(sc)->sc_io_read_2 ? \
		(sc)->sc_io_read_2((sc), (a)) : \
		bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, (a))
#define IO_READ_MULTI_2(sc, a, b, c) \
	if ((sc)->sc_io_read_multi_2) \
		(sc)->sc_io_read_multi_2((sc), (a), (b), (c)); else \
		bus_space_read_multi_2((sc)->sc_iot, (sc)->sc_ioh, (a), (b), (c))
#define IO_WRITE_2(sc, a, d) \
	if ((sc)->sc_io_write_2) \
		(sc)->sc_io_write_2((sc), (a), (d)); else \
		bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, (a), (d))
#define IO_WRITE_MULTI_2(sc, a, d, c) \
	if ((sc)->sc_io_write_multi_2) \
		(sc)->sc_io_write_multi_2((sc), (a), (d), (c)); else \
		bus_space_write_multi_2((sc)->sc_iot, (sc)->sc_ioh, (a), (d), (c))
#define MEM_READ_2(sc, a) \
	(sc)->sc_mem_read_2 ? \
		(sc)->sc_mem_read_2((sc), (a)) : \
		bus_space_read_2((sc)->sc_memt, (sc)->sc_memh, (a))
#define MEM_WRITE_2(sc, a, d) \
	if ((sc)->sc_mem_write_2) \
		(sc)->sc_mem_write_2((sc), (a), (d)); else \
		bus_space_write_2((sc)->sc_memt, (sc)->sc_memh, (a), (d))
#define MEM_WRITE_REGION_2(sc, a, d, c) \
	if ((sc)->sc_mem_write_region_2) \
		(sc)->sc_mem_write_region_2((sc), (a), (d), (c)); else \
		bus_space_write_region_2((sc)->sc_memt, (sc)->sc_memh, (a), (d), (c))


/* Config Flags in cs_softc */

#define CFGFLG_MEM_MODE     0x0001
#define CFGFLG_USE_SA       0x0002
#define CFGFLG_IOCHRDY      0x0004
#define CFGFLG_DCDC_POL     0x0008
#define CFGFLG_DMA_MODE	    0x0020
#define CFGFLG_ATTACHED     0x0040 /* XXX should not be here? */
#define CFGFLG_CARDBUS_HACK 0x0080
#define CFGFLG_ENABLED      0x0100 /* XXX should not be here? */
#define CFGFLG_NOT_EEPROM   0x8000


/*
 * Inlines for reading/writing the packet page area.
 */

static __inline__ u_int16_t _cs_read_port(struct cs_softc *, int);

static __inline__ u_int16_t
_cs_read_port(struct cs_softc *sc, int off)
{
	u_int16_t result;

	if (sc->sc_cfgflags & CFGFLG_CARDBUS_HACK) {
	    /*
		 * hack for EtherJet PCMCIA and cardbus (obtained from freebsd)
		 *
	     * EtherJet PCMCIA don't work with cardbus bridges
	     * (at least TI1250) without this hack.
	     */
	    result = (IO_READ_1(sc, off) & 0xff);
	    result |= ((IO_READ_1(sc, off+1) & 0xff) << 8);
	}
	else {
	    result = IO_READ_2(sc, off);
	}

	return result;
}

static __inline__ u_int16_t _CS_READ_PACKET_PAGE_IO(struct cs_softc *, int);

static __inline__ u_int16_t
_CS_READ_PACKET_PAGE_IO(struct cs_softc *sc, int offset)
{

	IO_WRITE_2(sc, PORT_PKTPG_PTR, offset);
	return (_cs_read_port(sc, PORT_PKTPG_DATA));
}

static __inline__ u_int16_t CS_READ_PACKET_PAGE_IO(struct cs_softc *, int);

static __inline__ u_int16_t
CS_READ_PACKET_PAGE_IO(struct cs_softc *sc, int offset)
{

	IO_WRITE_2(sc, PORT_PKTPG_PTR, offset);
	return (IO_READ_2(sc, PORT_PKTPG_DATA));
}

#define	CS_READ_PACKET_PAGE_MEM(sc, offset)				\
	MEM_READ_2((sc), (offset))

#define	CS_READ_PACKET_PAGE(sc, offset)					\
	((sc)->sc_memorymode ? CS_READ_PACKET_PAGE_MEM((sc), (offset)) :\
	 _CS_READ_PACKET_PAGE_IO((sc), (offset)))

#define	CS_WRITE_PACKET_PAGE_IO(sc, offset, val)			\
do {									\
	IO_WRITE_2((sc), PORT_PKTPG_PTR, (offset));			\
	IO_WRITE_2((sc), PORT_PKTPG_DATA, (val));			\
} while (0)

#define	CS_WRITE_PACKET_PAGE_MEM(sc, offset, val)		\
	MEM_WRITE_2((sc), (offset), (val))

#define	CS_WRITE_PACKET_PAGE(sc, offset, val)				\
do {									\
	if ((sc)->sc_memorymode)					\
		CS_WRITE_PACKET_PAGE_MEM((sc), (offset), (val));	\
	else								\
		CS_WRITE_PACKET_PAGE_IO((sc), (offset), (val));		\
} while (0)

#define CS_READ_PORT(sc, off)\
	IO_READ_2((sc), (off))

#define CS_WRITE_PORT(sc, off, val)\
	IO_WRITE_2((sc), (off), (val))


/* Return Status */
#define	CS_ERROR   -1
#define CS_OK       1
		

/* Media Type in cs_softc */

#define MEDIA_AUI           0x0001
#define MEDIA_10BASE2       0x0002
#define MEDIA_10BASET       0x0003


/* Miscellaneous definitions */

#define MAXLOOP            0x8888

int	cs_attach(struct cs_softc *sc, u_int8_t *enaddr,
		  int *media, int nmedia, int defmedia);
int	cs_detach(struct cs_softc *sc);
int	cs_verify_eeprom(struct cs_softc *sc);
int	cs_read_eeprom(struct cs_softc *, int, u_int16_t *);
int	cs_intr(void *);
int	cs_activate(struct device *, enum devact);
void	cs_ether_input(struct cs_softc *, struct mbuf *);
void	cs_print_rx_errors(struct cs_softc *, u_int16_t);
int	cs_init(struct ifnet *);

#define CS_IS_ENABLED(sc)	((sc)->sc_cfgflags & CFGFLG_ENABLED)

#endif /* _DEV_IC_CS89X0VAR_H_ */