sys/arch/hp300/dev/if_le.c

   1 /*      $NetBSD: if_le.c,v 1.60 2008/04/04 12:25:06 tsutsui Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum and by Jason R. Thorpe.
   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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * Ralph Campbell and Rick Macklem.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)if_le.c     8.2 (Berkeley) 11/16/93
  64  */
  65
  66 #include <sys/cdefs.h>
  67 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.60 2008/04/04 12:25:06 tsutsui Exp $");
  68
  69 #include "opt_inet.h"
  70 #include "bpfilter.h"
  71
  72 #include <sys/param.h>
  73 #include <sys/systm.h>
  74 #include <sys/device.h>
  75
  76 #include <net/if.h>
  77 #include <net/if_ether.h>
  78 #include <net/if_media.h>
  79
  80 #include <dev/ic/lancereg.h>
  81 #include <dev/ic/lancevar.h>
  82 #include <dev/ic/am7990var.h>
  83
  84 #include <hp300/dev/diovar.h>
  85 #include <hp300/dev/diodevs.h>
  86 #include <hp300/dev/if_lereg.h>
  87
  88 #include "opt_useleds.h"
  89
  90 #ifdef USELEDS
  91 #include <hp300/hp300/leds.h>
  92 #endif
  93
  94 struct  le_softc {
  95         struct  am7990_softc sc_am7990; /* glue to MI code */
  96
  97         bus_space_tag_t sc_bst;
  98
  99         bus_space_handle_t sc_bsh0;     /* DIO registers */
 100         bus_space_handle_t sc_bsh1;     /* LANCE registers */
 101         bus_space_handle_t sc_bsh2;     /* buffer area */
 102 };
 103
 104 static int      lematch(device_t, cfdata_t, void *);
 105 static void     leattach(device_t, device_t, void *);
 106
 107 CFATTACH_DECL_NEW(le, sizeof(struct le_softc),
 108     lematch, leattach, NULL, NULL);
 109
 110 static int      leintr(void *);
 111
 112 #if defined(_KERNEL_OPT)
 113 #include "opt_ddb.h"
 114 #endif
 115
 116 static void     le_copytobuf(struct lance_softc *, void *, int, int);
 117 static void     le_copyfrombuf(struct lance_softc *, void *, int, int);
 118 static void     le_zerobuf(struct lance_softc *, int, int);
 119
 120 /* offsets for:    ID,   REGS,    MEM,  NVRAM */
 121 static const int lestd[] = { 0, 0x4000, 0x8000, 0xC008 };
 122
 123 static void
 124 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
 125 {
 126         struct le_softc *lesc = (struct le_softc *)sc;
 127         bus_space_tag_t bst = lesc->sc_bst;
 128         bus_space_handle_t bsh0 = lesc->sc_bsh0;
 129         bus_space_handle_t bsh1 = lesc->sc_bsh1;
 130
 131         do {
 132                 bus_space_write_2(bst, bsh1, LER1_RAP, port);
 133         } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
 134         do {
 135                 bus_space_write_2(bst, bsh1, LER1_RDP, val);
 136         } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
 137 }
 138
 139 static uint16_t
 140 lerdcsr(struct lance_softc *sc, uint16_t port)
 141 {
 142         struct le_softc *lesc = (struct le_softc *)sc;
 143         bus_space_tag_t bst = lesc->sc_bst;
 144         bus_space_handle_t bsh0 = lesc->sc_bsh0;
 145         bus_space_handle_t bsh1 = lesc->sc_bsh1;
 146         uint16_t val;
 147
 148         do {
 149                 bus_space_write_2(bst, bsh1, LER1_RAP, port);
 150         } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
 151         do {
 152                 val = bus_space_read_2(bst, bsh1, LER1_RDP);
 153         } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
 154
 155         return val;
 156 }
 157
 158 static int
 159 lematch(device_t parent, cfdata_t cf, void *aux)
 160 {
 161         struct dio_attach_args *da = aux;
 162
 163         if (da->da_id == DIO_DEVICE_ID_LAN)
 164                 return 1;
 165         return 0;
 166 }
 167
 168 /*
 169  * Interface exists: make available by filling in network interface
 170  * record.  System will initialize the interface when it is ready
 171  * to accept packets.
 172  */
 173 static void
 174 leattach(device_t parent, device_t self, void *aux)
 175 {
 176         struct le_softc *lesc = device_private(self);
 177         struct lance_softc *sc = &lesc->sc_am7990.lsc;
 178         struct dio_attach_args *da = aux;
 179         bus_space_tag_t bst = da->da_bst;
 180         bus_space_handle_t bsh0, bsh1, bsh2;
 181         bus_size_t offset;
 182         int i;
 183
 184         sc->sc_dev = self;
 185
 186         if (bus_space_map(bst, (bus_addr_t)dio_scodetopa(da->da_scode),
 187             da->da_size, 0, &bsh0)) {
 188                 aprint_error(": can't map LANCE registers\n");
 189                 return;
 190         }
 191
 192         if (bus_space_subregion(bst, bsh0, lestd[1], LER1_SIZE, &bsh1)) {
 193                 aprint_error(": can't subregion LANCE space\n");
 194                 return;
 195         }
 196
 197         if (bus_space_subregion(bst, bsh0, lestd[2], LE_BUFSIZE, &bsh2)) {
 198                 aprint_error(": can't subregion buffer space\n");
 199                 return;
 200         }
 201
 202         lesc->sc_bst = bst;
 203         lesc->sc_bsh0 = bsh0;
 204         lesc->sc_bsh1 = bsh1;
 205         lesc->sc_bsh2 = bsh2;
 206
 207         bus_space_write_1(bst, bsh0, LER0_ID, 0xff);
 208         DELAY(100);
 209
 210         sc->sc_conf3 = LE_C3_BSWP;
 211         sc->sc_addr = 0;
 212         sc->sc_memsize = LE_BUFSIZE;
 213
 214         /*
 215          * Read the ethernet address off the board, one nibble at a time.
 216          */
 217         offset = lestd[3];
 218         for (i = 0; i < sizeof(sc->sc_enaddr); i++) {
 219                 sc->sc_enaddr[i] =
 220                     (bus_space_read_1(bst, bsh0, ++offset) & 0xf) << 4;
 221                 offset++;
 222                 sc->sc_enaddr[i] |=
 223                     (bus_space_read_1(bst, bsh0, ++offset) & 0xf);
 224                 offset++;
 225         }
 226
 227         sc->sc_copytodesc = le_copytobuf;
 228         sc->sc_copyfromdesc = le_copyfrombuf;
 229         sc->sc_copytobuf = le_copytobuf;
 230         sc->sc_copyfrombuf = le_copyfrombuf;
 231         sc->sc_zerobuf = le_zerobuf;
 232
 233         sc->sc_rdcsr = lerdcsr;
 234         sc->sc_wrcsr = lewrcsr;
 235         sc->sc_hwinit = NULL;
 236
 237         am7990_config(&lesc->sc_am7990);
 238
 239         /* Establish the interrupt handler. */
 240         (void) dio_intr_establish(leintr, sc, da->da_ipl, IPL_NET);
 241         bus_space_write_1(bst, bsh0, LER0_STATUS, LE_IE);
 242 }
 243
 244 static int
 245 leintr(void *arg)
 246 {
 247         struct lance_softc *sc = arg;
 248 #ifdef USELEDS
 249         uint16_t isr;
 250
 251         isr = lerdcsr(sc, LE_CSR0);
 252
 253         if ((isr & LE_C0_INTR) == 0)
 254                 return 0;
 255
 256         if (isr & LE_C0_RINT)
 257                 ledcontrol(0, 0, LED_LANRCV);
 258
 259         if (isr & LE_C0_TINT)
 260                 ledcontrol(0, 0, LED_LANXMT);
 261 #endif /* USELEDS */
 262
 263         return am7990_intr(sc);
 264 }
 265
 266 static void
 267 le_copytobuf(struct lance_softc *sc, void *from, int boff, int len)
 268 {
 269         struct le_softc *lesc = (struct le_softc *)sc;
 270
 271         bus_space_write_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, from, len);
 272 }
 273
 274 static void
 275 le_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len)
 276 {
 277         struct le_softc *lesc = (struct le_softc *)sc;
 278
 279         bus_space_read_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, to, len);
 280 }
 281
 282 static void
 283 le_zerobuf(struct lance_softc *sc, int boff, int len)
 284 {
 285         struct le_softc *lesc = (struct le_softc *)sc;
 286
 287         bus_space_set_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, 0, len);
 288 }