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      1 /*	$NetBSD: if_mcvar.h,v 1.18 2022/09/18 02:41:24 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 David Huang <khym (at) azeotrope.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  *
     26  */
     27 
     28 /* XXX this file depends on opt_ddb.h */
     29 #ifdef DDB
     30 #define	integrate
     31 #define hide
     32 #else
     33 #define	integrate	static inline
     34 #define hide		static
     35 #endif
     36 
     37 #define	MC_REGSPACING	16
     38 #define	MC_REGSIZE	MACE_NREGS * MC_REGSPACING
     39 #define	MACE_REG(x)	((x)*MC_REGSPACING)
     40 
     41 #define	NIC_GET(sc, reg)	(bus_space_read_1((sc)->sc_regt,	\
     42 				    (sc)->sc_regh, MACE_REG(reg)))
     43 
     44 #define	NIC_PUT(sc, reg, val)	(bus_space_write_1((sc)->sc_regt,	\
     45 				    (sc)->sc_regh, MACE_REG(reg), (val)))
     46 
     47 #ifndef	MC_RXDMABUFS
     48 #define	MC_RXDMABUFS	4
     49 #endif
     50 #if (MC_RXDMABUFS < 2)
     51 #error Must have at least two buffers for DMA!
     52 #endif
     53 
     54 #define	MC_NPAGES	((MC_RXDMABUFS * 0x800 + PAGE_SIZE - 1) / PAGE_SIZE)
     55 
     56 struct mc_rxframe {
     57 	u_int8_t	rx_rcvcnt;
     58 	u_int8_t	rx_rcvsts;
     59 	u_int8_t	rx_rntpc;
     60 	u_int8_t	rx_rcvcc;
     61 	u_char		*rx_frame;
     62 };
     63 
     64 struct mc_softc {
     65 	device_t	sc_dev;		/* base device glue */
     66 	struct ethercom	sc_ethercom;	/* Ethernet common part */
     67 #define	sc_if		sc_ethercom.ec_if
     68 
     69 	struct mc_rxframe	sc_rxframe;
     70 	u_int8_t	sc_biucc;
     71 	u_int8_t	sc_fifocc;
     72 	u_int8_t	sc_plscc;
     73 	u_int8_t	sc_enaddr[6];
     74 	u_int8_t	sc_pad[2];
     75 	int		sc_havecarrier; /* carrier status */
     76 	void		(*sc_bus_init)(struct mc_softc *);
     77 	void		(*sc_putpacket)(struct mc_softc *, u_int);
     78 
     79 	bus_space_tag_t		sc_regt;
     80 	bus_space_handle_t	sc_regh;
     81 	bus_dma_tag_t	sc_dmat;
     82 	bus_dmamap_t	sc_dmam_tx, sc_dmam_rx;
     83 	bus_dma_segment_t	sc_dmasegs_tx, sc_dmasegs_rx;
     84 
     85 	uint8_t		*sc_txbuf, *sc_rxbuf;
     86 	bus_addr_t	sc_txbuf_phys, sc_rxbuf_phys;
     87 	int		sc_tail;
     88 	int		sc_rxset;
     89 	int		sc_txset, sc_txseti;
     90 	bool		sc_txbusy;
     91 
     92 	krndsource_t rnd_source;
     93 };
     94 
     95 int	mcsetup(struct mc_softc *, u_int8_t *);
     96 void	mcintr(void *arg);
     97 void	mc_rint(struct mc_softc *);
     98 u_char	mc_get_enaddr(bus_space_tag_t, bus_space_handle_t, bus_size_t,
     99 		      u_char *);
    100