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if_le_ibus.c revision 1.7.6.2
      1  1.7.6.1    skrll /*	$NetBSD: if_le_ibus.c,v 1.7.6.2 2004/09/18 14:38:55 skrll Exp $	*/
      2      1.2   simonb 
      3      1.2   simonb /*
      4      1.2   simonb  * Copyright 1996 The Board of Trustees of The Leland Stanford
      5      1.2   simonb  * Junior University. All Rights Reserved.
      6      1.2   simonb  *
      7      1.2   simonb  * Permission to use, copy, modify, and distribute this
      8      1.2   simonb  * software and its documentation for any purpose and without
      9      1.2   simonb  * fee is hereby granted, provided that the above copyright
     10      1.2   simonb  * notice appear in all copies.  Stanford University
     11      1.2   simonb  * makes no representations about the suitability of this
     12      1.2   simonb  * software for any purpose.  It is provided "as is" without
     13      1.2   simonb  * express or implied warranty.
     14      1.2   simonb  *
     15      1.2   simonb  * This driver was contributed by Jonathan Stone.
     16      1.2   simonb  */
     17      1.2   simonb 
     18      1.2   simonb /*
     19      1.2   simonb  * LANCE on Decstation kn01/kn220(?) baseboard.
     20      1.2   simonb  */
     21  1.7.6.1    skrll 
     22  1.7.6.1    skrll #include <sys/cdefs.h>
     23  1.7.6.1    skrll __KERNEL_RCSID(0, "$NetBSD: if_le_ibus.c,v 1.7.6.2 2004/09/18 14:38:55 skrll Exp $");
     24  1.7.6.1    skrll 
     25      1.2   simonb #include "opt_inet.h"
     26      1.2   simonb 
     27      1.2   simonb #include <sys/param.h>
     28      1.2   simonb #include <sys/socket.h>
     29      1.3      chs #include <sys/systm.h>
     30      1.2   simonb 
     31      1.2   simonb #include <net/if.h>
     32      1.2   simonb #include <net/if_ether.h>
     33      1.2   simonb #include <net/if_media.h>
     34      1.2   simonb 
     35      1.2   simonb #ifdef INET
     36      1.2   simonb #include <netinet/in.h>
     37      1.2   simonb #include <netinet/if_inarp.h>
     38      1.2   simonb #endif
     39      1.2   simonb 
     40      1.2   simonb #include <dev/ic/lancevar.h>
     41      1.2   simonb #include <dev/ic/am7990var.h>
     42      1.2   simonb 
     43      1.2   simonb #include <dev/tc/if_levar.h>
     44      1.2   simonb #include <pmax/ibus/ibusvar.h>
     45      1.2   simonb #include <pmax/pmax/kn01.h>
     46      1.2   simonb 
     47      1.2   simonb static void le_dec_copyfrombuf_gap2(struct lance_softc *, void *, int, int);
     48      1.2   simonb static void le_dec_copytobuf_gap2(struct lance_softc *, void *, int, int);
     49      1.2   simonb static void le_dec_zerobuf_gap2(struct lance_softc *, int, int);
     50      1.2   simonb 
     51      1.2   simonb 
     52      1.2   simonb static int le_pmax_match(struct device *, struct cfdata *, void *);
     53      1.2   simonb static void le_pmax_attach(struct device *, struct device *, void *);
     54      1.2   simonb 
     55      1.7  thorpej CFATTACH_DECL(le_pmax, sizeof(struct le_softc),
     56      1.7  thorpej     le_pmax_match, le_pmax_attach, NULL, NULL);
     57      1.2   simonb 
     58      1.2   simonb int
     59      1.2   simonb le_pmax_match(struct device *parent, struct cfdata *match, void *aux)
     60      1.2   simonb {
     61      1.2   simonb 	struct ibus_attach_args *d = aux;
     62      1.2   simonb 
     63      1.2   simonb 	if (strcmp("lance", d->ia_name) != 0)
     64      1.2   simonb 		return (0);
     65      1.2   simonb 	return (1);
     66      1.2   simonb }
     67      1.2   simonb 
     68      1.2   simonb void
     69      1.2   simonb le_pmax_attach(struct device *parent, struct device *self, void *aux)
     70      1.2   simonb {
     71      1.2   simonb 	struct le_softc *lesc = (void *)self;
     72      1.2   simonb 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
     73      1.2   simonb 	u_char *cp;
     74      1.2   simonb 	struct ibus_attach_args *ia = aux;
     75      1.2   simonb 
     76      1.2   simonb 	/*
     77      1.2   simonb 	 * It's on the baseboard, with a dedicated interrupt line.
     78      1.2   simonb 	 */
     79      1.2   simonb 	lesc->sc_r1 = (struct lereg1 *)(ia->ia_addr);
     80      1.2   simonb 	sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(KN01_SYS_LANCE_B_START);
     81      1.2   simonb 	cp = (u_char *)(MIPS_PHYS_TO_KSEG1(KN01_SYS_CLOCK) + 1);
     82      1.2   simonb 
     83      1.2   simonb 	sc->sc_copytodesc = le_dec_copytobuf_gap2;
     84      1.2   simonb 	sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2;
     85      1.2   simonb 	sc->sc_copytobuf = le_dec_copytobuf_gap2;
     86      1.2   simonb 	sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2;
     87      1.2   simonb 	sc->sc_zerobuf = le_dec_zerobuf_gap2;
     88      1.2   simonb 
     89      1.2   simonb 	dec_le_common_attach(&lesc->sc_am7990, cp);
     90      1.2   simonb 
     91      1.2   simonb 	ibus_intr_establish(parent, (void*)ia->ia_cookie, IPL_NET,
     92      1.2   simonb 	    am7990_intr, sc);
     93      1.2   simonb }
     94      1.2   simonb 
     95      1.2   simonb /*
     96      1.2   simonb  * gap2: two bytes of data followed by two bytes of pad.
     97      1.2   simonb  *
     98      1.2   simonb  * Buffers must be 4-byte aligned.  The code doesn't worry about
     99      1.2   simonb  * doing an extra byte.
    100      1.2   simonb  */
    101      1.2   simonb 
    102      1.2   simonb void
    103      1.2   simonb le_dec_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len)
    104      1.2   simonb {
    105      1.2   simonb 	volatile caddr_t buf = sc->sc_mem;
    106      1.2   simonb 	caddr_t from = fromv;
    107      1.2   simonb 	volatile u_int16_t *bptr;
    108      1.2   simonb 
    109      1.2   simonb 	if (boff & 0x1) {
    110      1.2   simonb 		/* handle unaligned first byte */
    111      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + (boff - 1);
    112      1.2   simonb 		*bptr = (*from++ << 8) | (*bptr & 0xff);
    113      1.2   simonb 		bptr += 2;
    114      1.2   simonb 		len--;
    115      1.2   simonb 	} else
    116      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + boff;
    117      1.2   simonb 	while (len > 1) {
    118      1.2   simonb 		*bptr = (from[1] << 8) | (from[0] & 0xff);
    119      1.2   simonb 		bptr += 2;
    120      1.2   simonb 		from += 2;
    121      1.2   simonb 		len -= 2;
    122      1.2   simonb 	}
    123      1.2   simonb 	if (len == 1)
    124      1.2   simonb 		*bptr = (u_int16_t)*from;
    125      1.2   simonb }
    126      1.2   simonb 
    127      1.2   simonb void
    128      1.2   simonb le_dec_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len)
    129      1.2   simonb {
    130      1.2   simonb 	volatile caddr_t buf = sc->sc_mem;
    131      1.2   simonb 	caddr_t to = tov;
    132      1.2   simonb 	volatile u_int16_t *bptr;
    133      1.2   simonb 	u_int16_t tmp;
    134      1.2   simonb 
    135      1.2   simonb 	if (boff & 0x1) {
    136      1.2   simonb 		/* handle unaligned first byte */
    137      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + (boff - 1);
    138      1.2   simonb 		*to++ = (*bptr >> 8) & 0xff;
    139      1.2   simonb 		bptr += 2;
    140      1.2   simonb 		len--;
    141      1.2   simonb 	} else
    142      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + boff;
    143      1.2   simonb 	while (len > 1) {
    144      1.2   simonb 		tmp = *bptr;
    145      1.2   simonb 		*to++ = tmp & 0xff;
    146      1.2   simonb 		*to++ = (tmp >> 8) & 0xff;
    147      1.2   simonb 		bptr += 2;
    148      1.2   simonb 		len -= 2;
    149      1.2   simonb 	}
    150      1.2   simonb 	if (len == 1)
    151      1.2   simonb 		*to = *bptr & 0xff;
    152      1.2   simonb }
    153      1.2   simonb 
    154      1.2   simonb static void
    155      1.2   simonb le_dec_zerobuf_gap2(struct lance_softc *sc, int boff, int len)
    156      1.2   simonb {
    157      1.2   simonb 	volatile caddr_t buf = sc->sc_mem;
    158      1.2   simonb 	volatile u_int16_t *bptr;
    159      1.2   simonb 
    160      1.2   simonb 	if ((unsigned)boff & 0x1) {
    161      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + (boff - 1);
    162      1.2   simonb 		*bptr &= 0xff;
    163      1.2   simonb 		bptr += 2;
    164      1.2   simonb 		len--;
    165      1.2   simonb 	} else
    166      1.2   simonb 		bptr = ((volatile u_int16_t *)buf) + boff;
    167      1.2   simonb 	while (len > 0) {
    168      1.2   simonb 		*bptr = 0;
    169      1.2   simonb 		bptr += 2;
    170      1.2   simonb 		len -= 2;
    171      1.2   simonb 	}
    172      1.2   simonb }
    173