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hmevar.h revision 1.7 
      1 /*	$NetBSD: hmevar.h,v 1.7 2001/11/25 22:12:01 tron Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Paul Kranenburg.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include "rnd.h"
     40 
     41 #include <sys/callout.h>
     42 #if NRND > 0
     43 #include <sys/rnd.h>
     44 #endif
     45 
     46 #define	HME_TX_RING_SIZE	128
     47 #define	HME_RX_RING_SIZE	128
     48 #define	HME_RX_RING_MAX		256
     49 #define	HME_TX_RING_MAX		256
     50 #define	HME_RX_PKTSIZE		1600
     51 
     52 struct hme_sxd {
     53 	struct mbuf *sd_mbuf;		/* descriptor mbuf */
     54 	bus_dmamap_t sd_map;		/* descriptor dmamap */
     55 	int sd_loaded;			/* descriptor dmamap loaded? */
     56 };
     57 
     58 struct hme_ring {
     59 	/* Ring Descriptors */
     60 	caddr_t		rb_membase;	/* Packet buffer: CPU address */
     61 	bus_addr_t	rb_dmabase;	/* Packet buffer: DMA address */
     62 	caddr_t		rb_txd;		/* Transmit descriptors */
     63 	bus_addr_t	rb_txddma;	/* DMA address of same */
     64 	caddr_t		rb_rxd;		/* Receive descriptors */
     65 	bus_addr_t	rb_rxddma;	/* DMA address of same */
     66 };
     67 
     68 struct hme_softc {
     69 	struct device	sc_dev;		/* boilerplate device view */
     70 	struct ethercom	sc_ethercom;	/* Ethernet common part */
     71 	struct mii_data	sc_mii;		/* MII media control */
     72 #define sc_media	sc_mii.mii_media/* shorthand */
     73 	struct callout	sc_tick_ch;	/* tick callout */
     74 
     75 	/* The following bus handles are to be provided by the bus front-end */
     76 	bus_space_tag_t	sc_bustag;	/* bus tag */
     77 	bus_dma_tag_t	sc_dmatag;	/* bus dma tag */
     78 	bus_dmamap_t	sc_dmamap;	/* bus dma handle */
     79 	bus_space_handle_t sc_seb;	/* HME Global registers */
     80 	bus_space_handle_t sc_erx;	/* HME ERX registers */
     81 	bus_space_handle_t sc_etx;	/* HME ETX registers */
     82 	bus_space_handle_t sc_mac;	/* HME MAC registers */
     83 	bus_space_handle_t sc_mif;	/* HME MIF registers */
     84 	int		sc_burst;	/* DVMA burst size in effect */
     85 	int		sc_phys[2];	/* MII instance -> PHY map */
     86 
     87 	int		sc_pci;		/* XXXXX -- PCI buses are LE. */
     88 
     89 	/* Ring descriptor */
     90 	struct hme_ring		sc_rb;
     91 
     92 	int			sc_debug;
     93 	void			*sc_sh;		/* shutdownhook cookie */
     94 	u_int8_t		sc_enaddr[ETHER_ADDR_LEN]; /* MAC address */
     95 
     96 	/* Special hardware hooks */
     97 	void	(*sc_hwreset) __P((struct hme_softc *));
     98 	void	(*sc_hwinit) __P((struct hme_softc *));
     99 
    100 	struct hme_sxd sc_txd[HME_TX_RING_MAX], sc_rxd[HME_RX_RING_MAX];
    101 	bus_dmamap_t	sc_rxmap_spare;
    102 	int	sc_tx_cnt, sc_tx_prod, sc_tx_cons;
    103 	int	sc_last_rd;
    104 #if NRND > 0
    105 	rndsource_element_t	rnd_source;
    106 #endif
    107 };
    108 
    109 
    110 void	hme_config __P((struct hme_softc *));
    111 void	hme_reset __P((struct hme_softc *));
    112 int	hme_intr __P((void *));
    113