sys/arch/vax/if/if_le.c

   1 /*      $NetBSD: if_le.c,v 1.34 2009/03/18 17:06:47 cegger Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1997, 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 of the Numerical Aerospace
   9  * Simulation Facility, NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*-
  34  * Copyright (c) 1992, 1993
  35  *      The Regents of the University of California.  All rights reserved.
  36  *
  37  * This code is derived from software contributed to Berkeley by
  38  * Ralph Campbell and Rick Macklem.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  * 3. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)if_le.c     8.2 (Berkeley) 11/16/93
  65  */
  66
  67 #include <sys/cdefs.h>
  68 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.34 2009/03/18 17:06:47 cegger Exp $");
  69
  70 #include "opt_inet.h"
  71 #include "bpfilter.h"
  72
  73 #include <sys/param.h>
  74 #include <sys/syslog.h>
  75 #include <sys/socket.h>
  76 #include <sys/device.h>
  77 #include <sys/reboot.h>
  78
  79 #include <uvm/uvm_extern.h>
  80
  81 #include <net/if.h>
  82 #include <net/if_ether.h>
  83 #include <net/if_media.h>
  84
  85 #ifdef INET
  86 #include <netinet/in.h>
  87 #include <netinet/if_inarp.h>
  88 #endif
  89
  90 #include <machine/cpu.h>
  91 #include <machine/nexus.h>
  92 #include <machine/scb.h>
  93 #include <machine/mainbus.h>
  94
  95 #include <dev/ic/lancereg.h>
  96 #include <dev/ic/lancevar.h>
  97 #include <dev/ic/am7990reg.h>
  98 #include <dev/ic/am7990var.h>
  99
 100 #include "ioconf.h"
 101
 102 #define LE_VEC  0xd4    /* Interrupt vector on 3300/3400 */
 103
 104 #define LE_CSR  0x20084400
 105 #define LE_ROM  0x20084200
 106 #define LE_RAM  0x20120000
 107
 108 struct le_softc {
 109         struct  am7990_softc sc_am7990; /* Must be first */
 110         struct  evcnt sc_intrcnt;
 111         volatile uint16_t *sc_rap;
 112         volatile uint16_t *sc_rdp;
 113 };
 114
 115 static int      le_mainbus_match(device_t, cfdata_t, void *);
 116 static void     le_mainbus_attach(device_t, device_t, void *);
 117 static void     lewrcsr(struct lance_softc *, uint16_t, uint16_t);
 118 static uint16_t lerdcsr(struct lance_softc *, uint16_t);
 119 static void     lance_copytobuf_gap2(struct lance_softc *, void *, int, int);
 120 static void     lance_copyfrombuf_gap2(struct lance_softc *, void *, int, int);
 121 static void     lance_zerobuf_gap2(struct lance_softc *, int, int);
 122
 123 CFATTACH_DECL_NEW(le_mainbus, sizeof(struct le_softc),
 124     le_mainbus_match, le_mainbus_attach, NULL, NULL);
 125
 126 void
 127 lewrcsr(struct lance_softc *ls, uint16_t port, uint16_t val)
 128 {
 129         struct le_softc * const sc = (void *)ls;
 130
 131         *sc->sc_rap = port;
 132         *sc->sc_rdp = val;
 133 }
 134
 135 uint16_t
 136 lerdcsr(struct lance_softc *ls, uint16_t port)
 137 {
 138         struct le_softc * const sc = (void *)ls;
 139
 140         *sc->sc_rap = port;
 141         return *sc->sc_rdp;
 142 }
 143
 144 int
 145 le_mainbus_match(device_t parent, cfdata_t cf, void *aux)
 146 {
 147         struct mainbus_attach_args * const ma = aux;
 148         int found;
 149         vaddr_t va;
 150
 151         if (strcmp("lance", ma->ma_type))
 152                 return 0;
 153
 154         va = vax_map_physmem(LE_CSR, 1);
 155         found = (badaddr((void *)va, 2) == 0);
 156         vax_unmap_physmem(va, 1);
 157
 158         return found;
 159 }
 160
 161 void
 162 le_mainbus_attach(device_t parent, device_t self, void *aux)
 163 {
 164         struct le_softc * const sc = device_private(self);
 165         int *lance_addr;
 166         int i, vec, br;
 167
 168         sc->sc_am7990.lsc.sc_dev = self;
 169         sc->sc_rdp = (uint16_t *)vax_map_physmem(LE_CSR, 1);
 170         sc->sc_rap = sc->sc_rdp + 2;
 171
 172         /*
 173          * Set interrupt vector, by forcing an interrupt.
 174          */
 175         scb_vecref(0, 0); /* Clear vector ref */
 176         *sc->sc_rap = LE_CSR0;
 177         *sc->sc_rdp = LE_C0_STOP;
 178         DELAY(100);
 179         *sc->sc_rdp = LE_C0_INIT|LE_C0_INEA;
 180         DELAY(100000);
 181         i = scb_vecref(&vec, &br);
 182         if (i == 0 || vec == 0)
 183                 return;
 184
 185         scb_vecalloc(vec, (void (*)(void *))am7990_intr, sc,
 186                 SCB_ISTACK, &sc->sc_intrcnt);
 187         evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
 188                 device_xname(self), "intr");
 189
 190         aprint_normal(": vec %o ipl %x\n%s", vec, br, device_xname(self));
 191         /*
 192          * MD functions.
 193          */
 194         sc->sc_am7990.lsc.sc_rdcsr = lerdcsr;
 195         sc->sc_am7990.lsc.sc_wrcsr = lewrcsr;
 196         sc->sc_am7990.lsc.sc_nocarrier = NULL;
 197
 198         sc->sc_am7990.lsc.sc_mem =
 199             (void *)uvm_km_alloc(kernel_map, (128 * 1024), 0, UVM_KMF_VAONLY);
 200         if (sc->sc_am7990.lsc.sc_mem == 0)
 201                 return;
 202
 203         ioaccess((vaddr_t)sc->sc_am7990.lsc.sc_mem, LE_RAM,
 204             (128 * 1024) >> VAX_PGSHIFT);
 205
 206
 207         sc->sc_am7990.lsc.sc_addr = 0;
 208         sc->sc_am7990.lsc.sc_memsize = (64 * 1024);
 209
 210         sc->sc_am7990.lsc.sc_copytodesc = lance_copytobuf_gap2;
 211         sc->sc_am7990.lsc.sc_copyfromdesc = lance_copyfrombuf_gap2;
 212         sc->sc_am7990.lsc.sc_copytobuf = lance_copytobuf_gap2;
 213         sc->sc_am7990.lsc.sc_copyfrombuf = lance_copyfrombuf_gap2;
 214         sc->sc_am7990.lsc.sc_zerobuf = lance_zerobuf_gap2;
 215
 216         /*
 217          * Get the ethernet address out of rom
 218          */
 219         lance_addr = (int *)vax_map_physmem(LE_ROM, 1);
 220         for (i = 0; i < 6; i++)
 221                 sc->sc_am7990.lsc.sc_enaddr[i] = (u_char)lance_addr[i];
 222         vax_unmap_physmem((vaddr_t)lance_addr, 1);
 223
 224         memcpy(sc->sc_am7990.lsc.sc_ethercom.ec_if.if_xname, device_xname(self),
 225             IFNAMSIZ);
 226         am7990_config(&sc->sc_am7990);
 227 }
 228
 229 /*
 230  * gap2: two bytes of data followed by two bytes of pad.
 231  *
 232  * Buffers must be 4-byte aligned.  The code doesn't worry about
 233  * doing an extra byte.
 234  */
 235
 236 void
 237 lance_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len)
 238 {
 239         volatile void *buf = sc->sc_mem;
 240         char *from = fromv;
 241         volatile uint16_t *bptr;
 242
 243         if (boff & 0x1) {
 244                 /* handle unaligned first byte */
 245                 bptr = ((volatile uint16_t *)buf) + (boff - 1);
 246                 *bptr = (*from++ << 8) | (*bptr & 0xff);
 247                 bptr += 2;
 248                 len--;
 249         } else
 250                 bptr = ((volatile uint16_t *)buf) + boff;
 251         while (len > 1) {
 252                 *bptr = (from[1] << 8) | (from[0] & 0xff);
 253                 bptr += 2;
 254                 from += 2;
 255                 len -= 2;
 256         }
 257         if (len == 1)
 258                 *bptr = (uint16_t)*from;
 259 }
 260
 261 void
 262 lance_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len)
 263 {
 264         volatile void *buf = sc->sc_mem;
 265         char *to = tov;
 266         volatile uint16_t *bptr;
 267         uint16_t tmp;
 268
 269         if (boff & 0x1) {
 270                 /* handle unaligned first byte */
 271                 bptr = ((volatile uint16_t *)buf) + (boff - 1);
 272                 *to++ = (*bptr >> 8) & 0xff;
 273                 bptr += 2;
 274                 len--;
 275         } else
 276                 bptr = ((volatile uint16_t *)buf) + boff;
 277         while (len > 1) {
 278                 tmp = *bptr;
 279                 *to++ = tmp & 0xff;
 280                 *to++ = (tmp >> 8) & 0xff;
 281                 bptr += 2;
 282                 len -= 2;
 283         }
 284         if (len == 1)
 285                 *to = *bptr & 0xff;
 286 }
 287
 288 void
 289 lance_zerobuf_gap2(struct lance_softc *sc, int boff, int len)
 290 {
 291         volatile void *buf = sc->sc_mem;
 292         volatile uint16_t *bptr;
 293
 294         if ((unsigned int)boff & 0x1) {
 295                 bptr = ((volatile uint16_t *)buf) + (boff - 1);
 296                 *bptr &= 0xff;
 297                 bptr += 2;
 298                 len--;
 299         } else
 300                 bptr = ((volatile uint16_t *)buf) + boff;
 301         while (len > 0) {
 302                 *bptr = 0;
 303                 bptr += 2;
 304                 len -= 2;
 305         }
 306 }