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if_le.c revision 1.5
      1  1.5       pk /*	$NetBSD: if_le.c,v 1.5 1998/08/28 20:01:08 pk Exp $	*/
      2  1.1       pk 
      3  1.1       pk /*-
      4  1.4  mycroft  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
      5  1.1       pk  * All rights reserved.
      6  1.1       pk  *
      7  1.1       pk  * This code is derived from software contributed to The NetBSD Foundation
      8  1.4  mycroft  * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
      9  1.4  mycroft  * Simulation Facility, NASA Ames Research Center.
     10  1.1       pk  *
     11  1.1       pk  * Redistribution and use in source and binary forms, with or without
     12  1.1       pk  * modification, are permitted provided that the following conditions
     13  1.1       pk  * are met:
     14  1.1       pk  * 1. Redistributions of source code must retain the above copyright
     15  1.1       pk  *    notice, this list of conditions and the following disclaimer.
     16  1.1       pk  * 2. Redistributions in binary form must reproduce the above copyright
     17  1.1       pk  *    notice, this list of conditions and the following disclaimer in the
     18  1.1       pk  *    documentation and/or other materials provided with the distribution.
     19  1.1       pk  * 3. All advertising materials mentioning features or use of this software
     20  1.1       pk  *    must display the following acknowledgement:
     21  1.1       pk  *	This product includes software developed by the NetBSD
     22  1.1       pk  *	Foundation, Inc. and its contributors.
     23  1.1       pk  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  1.1       pk  *    contributors may be used to endorse or promote products derived
     25  1.1       pk  *    from this software without specific prior written permission.
     26  1.1       pk  *
     27  1.1       pk  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  1.1       pk  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  1.1       pk  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  1.1       pk  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  1.1       pk  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  1.1       pk  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  1.1       pk  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  1.1       pk  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  1.1       pk  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  1.1       pk  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  1.1       pk  * POSSIBILITY OF SUCH DAMAGE.
     38  1.1       pk  */
     39  1.1       pk 
     40  1.1       pk /*-
     41  1.1       pk  * Copyright (c) 1996
     42  1.1       pk  *	The President and Fellows of Harvard College. All rights reserved.
     43  1.1       pk  * Copyright (c) 1992, 1993
     44  1.1       pk  *	The Regents of the University of California.  All rights reserved.
     45  1.1       pk  *
     46  1.1       pk  * This code is derived from software contributed to Berkeley by
     47  1.1       pk  * Ralph Campbell and Rick Macklem.
     48  1.1       pk  *
     49  1.1       pk  * Redistribution and use in source and binary forms, with or without
     50  1.1       pk  * modification, are permitted provided that the following conditions
     51  1.1       pk  * are met:
     52  1.1       pk  * 1. Redistributions of source code must retain the above copyright
     53  1.1       pk  *    notice, this list of conditions and the following disclaimer.
     54  1.1       pk  * 2. Redistributions in binary form must reproduce the above copyright
     55  1.1       pk  *    notice, this list of conditions and the following disclaimer in the
     56  1.1       pk  *    documentation and/or other materials provided with the distribution.
     57  1.1       pk  * 3. All advertising materials mentioning features or use of this software
     58  1.1       pk  *    must display the following acknowledgement:
     59  1.1       pk  *	This product includes software developed by Aaron Brown and
     60  1.1       pk  *	Harvard University.
     61  1.1       pk  *	This product includes software developed by the University of
     62  1.1       pk  *	California, Berkeley and its contributors.
     63  1.1       pk  * 4. Neither the name of the University nor the names of its contributors
     64  1.1       pk  *    may be used to endorse or promote products derived from this software
     65  1.1       pk  *    without specific prior written permission.
     66  1.1       pk  *
     67  1.1       pk  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     68  1.1       pk  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     69  1.1       pk  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     70  1.1       pk  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     71  1.1       pk  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     72  1.1       pk  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     73  1.1       pk  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     74  1.1       pk  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     75  1.1       pk  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     76  1.1       pk  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     77  1.1       pk  * SUCH DAMAGE.
     78  1.1       pk  *
     79  1.1       pk  *	@(#)if_le.c	8.2 (Berkeley) 11/16/93
     80  1.1       pk  */
     81  1.1       pk 
     82  1.1       pk #include "opt_inet.h"
     83  1.1       pk #include "bpfilter.h"
     84  1.1       pk 
     85  1.1       pk #include <sys/param.h>
     86  1.1       pk #include <sys/systm.h>
     87  1.1       pk #include <sys/mbuf.h>
     88  1.1       pk #include <sys/syslog.h>
     89  1.1       pk #include <sys/socket.h>
     90  1.1       pk #include <sys/device.h>
     91  1.1       pk #include <sys/malloc.h>
     92  1.1       pk 
     93  1.1       pk #include <net/if.h>
     94  1.1       pk #include <net/if_ether.h>
     95  1.1       pk #include <net/if_media.h>
     96  1.1       pk 
     97  1.1       pk #ifdef INET
     98  1.1       pk #include <netinet/in.h>
     99  1.1       pk #include <netinet/if_inarp.h>
    100  1.1       pk #endif
    101  1.1       pk 
    102  1.1       pk #include <machine/autoconf.h>
    103  1.1       pk #include <machine/cpu.h>
    104  1.1       pk 
    105  1.1       pk #include <dev/sbus/sbusvar.h>
    106  1.1       pk #include <dev/sbus/lebuffervar.h>	/*XXX*/
    107  1.1       pk 
    108  1.1       pk #include <dev/ic/lancereg.h>
    109  1.1       pk #include <dev/ic/lancevar.h>
    110  1.1       pk #include <dev/ic/am7990reg.h>
    111  1.1       pk #include <dev/ic/am7990var.h>
    112  1.1       pk 
    113  1.1       pk /*
    114  1.1       pk  * LANCE registers.
    115  1.1       pk  */
    116  1.1       pk struct lereg1 {
    117  1.1       pk 	volatile u_int16_t	ler1_rdp;	/* data port */
    118  1.1       pk 	volatile u_int16_t	ler1_rap;	/* register select port */
    119  1.1       pk };
    120  1.1       pk 
    121  1.1       pk struct	le_softc {
    122  1.1       pk 	struct	am7990_softc sc_am7990;	/* glue to MI code */
    123  1.1       pk 	struct	sbusdev sc_sd;		/* sbus device */
    124  1.1       pk 	bus_space_tag_t	sc_bustag;
    125  1.1       pk 	bus_dma_tag_t	sc_dmatag;
    126  1.1       pk 	struct	lereg1 *sc_r1;		/* LANCE registers */
    127  1.1       pk };
    128  1.1       pk 
    129  1.1       pk #define MEMSIZE 0x4000		/* LANCE memory size */
    130  1.1       pk 
    131  1.1       pk int	lematch_sbus __P((struct device *, struct cfdata *, void *));
    132  1.1       pk void	leattach_sbus __P((struct device *, struct device *, void *));
    133  1.1       pk 
    134  1.1       pk /*
    135  1.1       pk  * Media types supported.
    136  1.1       pk  */
    137  1.1       pk static int lemedia[] = {
    138  1.2       pk 	IFM_ETHER|IFM_10_5,
    139  1.1       pk };
    140  1.1       pk #define NLEMEDIA	(sizeof(lemedia) / sizeof(lemedia[0]))
    141  1.1       pk 
    142  1.1       pk 
    143  1.1       pk struct cfattach le_sbus_ca = {
    144  1.1       pk 	sizeof(struct le_softc), lematch_sbus, leattach_sbus
    145  1.1       pk };
    146  1.1       pk 
    147  1.1       pk extern struct cfdriver le_cd;
    148  1.1       pk 
    149  1.1       pk #if defined(_KERNEL) && !defined(_LKM)
    150  1.1       pk #include "opt_ddb.h"
    151  1.1       pk #endif
    152  1.1       pk 
    153  1.1       pk #ifdef DDB
    154  1.1       pk #define	integrate
    155  1.1       pk #define hide
    156  1.1       pk #else
    157  1.1       pk #define	integrate	static __inline
    158  1.1       pk #define hide		static
    159  1.1       pk #endif
    160  1.1       pk 
    161  1.1       pk static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
    162  1.1       pk static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
    163  1.1       pk 
    164  1.1       pk static void
    165  1.1       pk lewrcsr(sc, port, val)
    166  1.1       pk 	struct lance_softc *sc;
    167  1.1       pk 	u_int16_t port, val;
    168  1.1       pk {
    169  1.1       pk 	struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
    170  1.1       pk 
    171  1.1       pk 	ler1->ler1_rap = port;
    172  1.1       pk 	ler1->ler1_rdp = val;
    173  1.1       pk 
    174  1.1       pk #if defined(SUN4M)
    175  1.1       pk 	/*
    176  1.1       pk 	 * We need to flush the Sbus->Mbus write buffers. This can most
    177  1.1       pk 	 * easily be accomplished by reading back the register that we
    178  1.1       pk 	 * just wrote (thanks to Chris Torek for this solution).
    179  1.1       pk 	 */
    180  1.1       pk 	if (CPU_ISSUN4M) {
    181  1.1       pk 		volatile u_int16_t discard;
    182  1.1       pk 		discard = ler1->ler1_rdp;
    183  1.1       pk 	}
    184  1.1       pk #endif
    185  1.1       pk }
    186  1.1       pk 
    187  1.1       pk static u_int16_t
    188  1.1       pk lerdcsr(sc, port)
    189  1.1       pk 	struct lance_softc *sc;
    190  1.1       pk 	u_int16_t port;
    191  1.1       pk {
    192  1.1       pk 	struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
    193  1.1       pk 	u_int16_t val;
    194  1.1       pk 
    195  1.1       pk 	ler1->ler1_rap = port;
    196  1.1       pk 	val = ler1->ler1_rdp;
    197  1.1       pk 	return (val);
    198  1.1       pk }
    199  1.1       pk 
    200  1.1       pk 
    201  1.1       pk int
    202  1.1       pk lematch_sbus(parent, cf, aux)
    203  1.1       pk 	struct device *parent;
    204  1.1       pk 	struct cfdata *cf;
    205  1.1       pk 	void *aux;
    206  1.1       pk {
    207  1.1       pk 	struct sbus_attach_args *sa = aux;
    208  1.1       pk 
    209  1.1       pk 	return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
    210  1.1       pk }
    211  1.1       pk 
    212  1.1       pk #define SAME_LANCE(bp, sa) \
    213  1.1       pk 	((bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset) || \
    214  1.1       pk 	 (bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit))
    215  1.1       pk 
    216  1.1       pk void
    217  1.1       pk leattach_sbus(parent, self, aux)
    218  1.1       pk 	struct device *parent, *self;
    219  1.1       pk 	void *aux;
    220  1.1       pk {
    221  1.1       pk 	struct sbus_attach_args *sa = aux;
    222  1.1       pk 	struct le_softc *lesc = (struct le_softc *)self;
    223  1.1       pk 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
    224  1.1       pk 	struct sbusdev *sd;
    225  1.1       pk 	bus_space_handle_t bh;
    226  1.1       pk 	/* XXX the following declarations should be elsewhere */
    227  1.1       pk 	extern void myetheraddr __P((u_char *));
    228  1.1       pk 
    229  1.1       pk 
    230  1.1       pk 	lesc->sc_bustag = sa->sa_bustag;
    231  1.1       pk 	lesc->sc_dmatag = sa->sa_dmatag;
    232  1.1       pk 
    233  1.1       pk 	if (sbus_bus_map(sa->sa_bustag,
    234  1.1       pk 			 sa->sa_slot,
    235  1.1       pk 			 sa->sa_offset,
    236  1.1       pk 			 sizeof(struct lereg1),
    237  1.1       pk 			 BUS_SPACE_MAP_LINEAR,
    238  1.1       pk 			 0, &bh) != 0) {
    239  1.1       pk 		printf("%s @ sbus: cannot map registers\n", self->dv_xname);
    240  1.1       pk 		return;
    241  1.1       pk 	}
    242  1.1       pk 	lesc->sc_r1 = (struct lereg1 *)bh;
    243  1.1       pk 
    244  1.1       pk 	/*
    245  1.1       pk 	 * Look for an "unallocated" lebuffer and pair it with
    246  1.1       pk 	 * this `le' device on the assumption that we're on
    247  1.1       pk 	 * a pre-historic ROM that doesn't establish le<=>lebuffer
    248  1.1       pk 	 * parent-child relationships.
    249  1.1       pk 	 */
    250  1.1       pk 	for (sd = ((struct sbus_softc *)parent)->sc_sbdev; sd != NULL;
    251  1.1       pk 	     sd = sd->sd_bchain) {
    252  1.1       pk 
    253  1.1       pk 		struct lebuf_softc *lebuf = (struct lebuf_softc *)sd->sd_dev;
    254  1.1       pk 
    255  1.1       pk 		if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0)
    256  1.1       pk 			continue;
    257  1.1       pk 
    258  1.1       pk 		if (lebuf->attached != 0)
    259  1.1       pk 			continue;
    260  1.1       pk 
    261  1.1       pk 		sc->sc_mem = lebuf->sc_buffer;
    262  1.1       pk 		sc->sc_memsize = lebuf->sc_bufsiz;
    263  1.1       pk 		sc->sc_addr = 0; /* Lance view is offset by buffer location */
    264  1.1       pk 		lebuf->attached = 1;
    265  1.1       pk 
    266  1.1       pk 		/* That old black magic... */
    267  1.1       pk 		sc->sc_conf3 = getpropint(sa->sa_node,
    268  1.1       pk 					  "busmaster-regval",
    269  1.1       pk 					  LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
    270  1.1       pk 		break;
    271  1.1       pk 	}
    272  1.1       pk 
    273  1.1       pk 	lesc->sc_sd.sd_reset = (void *)lance_reset;
    274  1.1       pk 	sbus_establish(&lesc->sc_sd, &sc->sc_dev);
    275  1.1       pk 
    276  1.1       pk 	if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 &&
    277  1.1       pk 	    SAME_LANCE(sa->sa_bp, sa))
    278  1.1       pk 		sa->sa_bp->dev = &sc->sc_dev;
    279  1.1       pk 
    280  1.1       pk 	if (sc->sc_mem == 0) {
    281  1.1       pk 		bus_dma_segment_t seg;
    282  1.1       pk 		int rseg, error;
    283  1.1       pk 
    284  1.5       pk #ifndef BUS_DMA_24BIT
    285  1.5       pk /* XXX - This flag is not defined on all archs */
    286  1.5       pk #define BUS_DMA_24BIT	0
    287  1.5       pk #endif
    288  1.3       pk 		error = bus_dmamem_alloc(lesc->sc_dmatag, MEMSIZE, NBPG, 0,
    289  1.3       pk 					 &seg, 1, &rseg,
    290  1.3       pk 					 BUS_DMA_NOWAIT | BUS_DMA_24BIT);
    291  1.1       pk 		if (error) {
    292  1.1       pk 			printf("if_le: DMA buffer alloc error %d\n", error);
    293  1.1       pk 			return;
    294  1.1       pk 		}
    295  1.3       pk 		error = bus_dmamem_map(lesc->sc_dmatag, &seg, rseg, MEMSIZE,
    296  1.1       pk 				       (caddr_t *)&sc->sc_mem,
    297  1.3       pk 				       BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
    298  1.1       pk 		if (error) {
    299  1.1       pk 			printf("if_le: DMA buffer map error %d\n", error);
    300  1.1       pk 			return;
    301  1.1       pk 		}
    302  1.1       pk 
    303  1.1       pk 		sc->sc_addr = seg.ds_addr & 0xffffff;
    304  1.1       pk 		sc->sc_memsize = MEMSIZE;
    305  1.1       pk 		sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
    306  1.1       pk 	}
    307  1.1       pk 
    308  1.1       pk 	myetheraddr(sc->sc_enaddr);
    309  1.1       pk 
    310  1.1       pk 	sc->sc_supmedia = lemedia;
    311  1.1       pk 	sc->sc_nsupmedia = NLEMEDIA;
    312  1.1       pk 	sc->sc_defaultmedia = lemedia[0];
    313  1.1       pk 
    314  1.1       pk 	sc->sc_copytodesc = lance_copytobuf_contig;
    315  1.1       pk 	sc->sc_copyfromdesc = lance_copyfrombuf_contig;
    316  1.1       pk 	sc->sc_copytobuf = lance_copytobuf_contig;
    317  1.1       pk 	sc->sc_copyfrombuf = lance_copyfrombuf_contig;
    318  1.1       pk 	sc->sc_zerobuf = lance_zerobuf_contig;
    319  1.1       pk 
    320  1.1       pk 	sc->sc_rdcsr = lerdcsr;
    321  1.1       pk 	sc->sc_wrcsr = lewrcsr;
    322  1.1       pk 
    323  1.1       pk 	am7990_config(&lesc->sc_am7990);
    324  1.1       pk 
    325  1.1       pk 	(void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0,
    326  1.1       pk 				 am7990_intr, sc);
    327  1.1       pk }
    328