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      1  1.13   tsutsui /*	$NetBSD: if_le_ibus.c,v 1.13 2008/04/04 12:25:06 tsutsui 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   1.8     lukem 
     22   1.8     lukem #include <sys/cdefs.h>
     23  1.13   tsutsui __KERNEL_RCSID(0, "$NetBSD: if_le_ibus.c,v 1.13 2008/04/04 12:25:06 tsutsui Exp $");
     24   1.8     lukem 
     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  1.12        ad #include <sys/device.h>
     31   1.2    simonb 
     32   1.2    simonb #include <net/if.h>
     33   1.2    simonb #include <net/if_ether.h>
     34   1.2    simonb #include <net/if_media.h>
     35   1.2    simonb 
     36   1.2    simonb #ifdef INET
     37   1.2    simonb #include <netinet/in.h>
     38   1.2    simonb #include <netinet/if_inarp.h>
     39   1.2    simonb #endif
     40   1.2    simonb 
     41   1.2    simonb #include <dev/ic/lancevar.h>
     42   1.2    simonb #include <dev/ic/am7990var.h>
     43   1.2    simonb 
     44   1.2    simonb #include <dev/tc/if_levar.h>
     45   1.2    simonb #include <pmax/ibus/ibusvar.h>
     46   1.2    simonb #include <pmax/pmax/kn01.h>
     47   1.2    simonb 
     48   1.2    simonb static void le_dec_copyfrombuf_gap2(struct lance_softc *, void *, int, int);
     49   1.2    simonb static void le_dec_copytobuf_gap2(struct lance_softc *, void *, int, int);
     50   1.2    simonb static void le_dec_zerobuf_gap2(struct lance_softc *, int, int);
     51   1.2    simonb 
     52   1.2    simonb 
     53  1.13   tsutsui static int le_pmax_match(device_t, cfdata_t, void *);
     54  1.13   tsutsui static void le_pmax_attach(device_t, device_t, void *);
     55   1.2    simonb 
     56  1.13   tsutsui CFATTACH_DECL_NEW(le_pmax, sizeof(struct le_softc),
     57   1.7   thorpej     le_pmax_match, le_pmax_attach, NULL, NULL);
     58   1.2    simonb 
     59   1.2    simonb int
     60  1.13   tsutsui le_pmax_match(device_t parent, cfdata_t cf, void *aux)
     61   1.2    simonb {
     62   1.2    simonb 	struct ibus_attach_args *d = aux;
     63   1.2    simonb 
     64   1.2    simonb 	if (strcmp("lance", d->ia_name) != 0)
     65   1.2    simonb 		return (0);
     66   1.2    simonb 	return (1);
     67   1.2    simonb }
     68   1.2    simonb 
     69   1.2    simonb void
     70  1.13   tsutsui le_pmax_attach(device_t parent, device_t self, void *aux)
     71   1.2    simonb {
     72  1.13   tsutsui 	struct le_softc *lesc = device_private(self);
     73   1.2    simonb 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
     74  1.13   tsutsui 	uint8_t *cp;
     75   1.2    simonb 	struct ibus_attach_args *ia = aux;
     76   1.2    simonb 
     77   1.2    simonb 	/*
     78   1.2    simonb 	 * It's on the baseboard, with a dedicated interrupt line.
     79   1.2    simonb 	 */
     80  1.13   tsutsui 	sc->sc_dev = self;
     81   1.2    simonb 	lesc->sc_r1 = (struct lereg1 *)(ia->ia_addr);
     82   1.2    simonb 	sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(KN01_SYS_LANCE_B_START);
     83  1.13   tsutsui 	cp = (uint8_t *)(MIPS_PHYS_TO_KSEG1(KN01_SYS_CLOCK) + 1);
     84   1.2    simonb 
     85   1.2    simonb 	sc->sc_copytodesc = le_dec_copytobuf_gap2;
     86   1.2    simonb 	sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2;
     87   1.2    simonb 	sc->sc_copytobuf = le_dec_copytobuf_gap2;
     88   1.2    simonb 	sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2;
     89   1.2    simonb 	sc->sc_zerobuf = le_dec_zerobuf_gap2;
     90   1.2    simonb 
     91   1.2    simonb 	dec_le_common_attach(&lesc->sc_am7990, cp);
     92   1.2    simonb 
     93  1.13   tsutsui 	ibus_intr_establish(parent, (void *)ia->ia_cookie, IPL_NET,
     94   1.2    simonb 	    am7990_intr, sc);
     95   1.2    simonb }
     96   1.2    simonb 
     97   1.2    simonb /*
     98   1.2    simonb  * gap2: two bytes of data followed by two bytes of pad.
     99   1.2    simonb  *
    100   1.2    simonb  * Buffers must be 4-byte aligned.  The code doesn't worry about
    101   1.2    simonb  * doing an extra byte.
    102   1.2    simonb  */
    103   1.2    simonb 
    104   1.2    simonb void
    105   1.2    simonb le_dec_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len)
    106   1.2    simonb {
    107  1.13   tsutsui 	volatile uint8_t *buf = sc->sc_mem;
    108  1.13   tsutsui 	uint8_t *from = fromv;
    109  1.13   tsutsui 	volatile uint16_t *bptr;
    110   1.2    simonb 
    111   1.2    simonb 	if (boff & 0x1) {
    112   1.2    simonb 		/* handle unaligned first byte */
    113  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + (boff - 1);
    114   1.2    simonb 		*bptr = (*from++ << 8) | (*bptr & 0xff);
    115   1.2    simonb 		bptr += 2;
    116   1.2    simonb 		len--;
    117   1.2    simonb 	} else
    118  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + boff;
    119   1.2    simonb 	while (len > 1) {
    120   1.2    simonb 		*bptr = (from[1] << 8) | (from[0] & 0xff);
    121   1.2    simonb 		bptr += 2;
    122   1.2    simonb 		from += 2;
    123   1.2    simonb 		len -= 2;
    124   1.2    simonb 	}
    125   1.2    simonb 	if (len == 1)
    126  1.13   tsutsui 		*bptr = (uint16_t)*from;
    127   1.2    simonb }
    128   1.2    simonb 
    129   1.2    simonb void
    130   1.2    simonb le_dec_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len)
    131   1.2    simonb {
    132  1.10  christos 	volatile void *buf = sc->sc_mem;
    133  1.13   tsutsui 	uint8_t *to = tov;
    134  1.13   tsutsui 	volatile uint16_t *bptr;
    135  1.13   tsutsui 	uint16_t tmp;
    136   1.2    simonb 
    137   1.2    simonb 	if (boff & 0x1) {
    138   1.2    simonb 		/* handle unaligned first byte */
    139  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + (boff - 1);
    140   1.2    simonb 		*to++ = (*bptr >> 8) & 0xff;
    141   1.2    simonb 		bptr += 2;
    142   1.2    simonb 		len--;
    143   1.2    simonb 	} else
    144  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + boff;
    145   1.2    simonb 	while (len > 1) {
    146   1.2    simonb 		tmp = *bptr;
    147   1.2    simonb 		*to++ = tmp & 0xff;
    148   1.2    simonb 		*to++ = (tmp >> 8) & 0xff;
    149   1.2    simonb 		bptr += 2;
    150   1.2    simonb 		len -= 2;
    151   1.2    simonb 	}
    152   1.2    simonb 	if (len == 1)
    153   1.2    simonb 		*to = *bptr & 0xff;
    154   1.2    simonb }
    155   1.2    simonb 
    156   1.2    simonb static void
    157   1.2    simonb le_dec_zerobuf_gap2(struct lance_softc *sc, int boff, int len)
    158   1.2    simonb {
    159  1.10  christos 	volatile void *buf = sc->sc_mem;
    160  1.13   tsutsui 	volatile uint16_t *bptr;
    161   1.2    simonb 
    162  1.13   tsutsui 	if ((unsigned int)boff & 0x1) {
    163  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + (boff - 1);
    164   1.2    simonb 		*bptr &= 0xff;
    165   1.2    simonb 		bptr += 2;
    166   1.2    simonb 		len--;
    167   1.2    simonb 	} else
    168  1.13   tsutsui 		bptr = ((volatile uint16_t *)buf) + boff;
    169   1.2    simonb 	while (len > 0) {
    170   1.2    simonb 		*bptr = 0;
    171   1.2    simonb 		bptr += 2;
    172   1.2    simonb 		len -= 2;
    173   1.2    simonb 	}
    174   1.2    simonb }
    175