sys/dev/netif/awi/am79c930.c

   1 /* $NetBSD: am79c930.c,v 1.5 2000/03/23 13:57:58 onoe Exp $ */
   2 /* $FreeBSD: src/sys/dev/awi/am79c930.c,v 1.2.2.1 2000/12/07 04:09:39 imp Exp $ */
   3 /* $DragonFly: src/sys/dev/netif/awi/Attic/am79c930.c,v 1.4 2003/08/27 09:38:29 rob Exp $ */
   4
   5 /*-
   6  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   7  * All rights reserved.
   8  *
   9  * This code is derived from software contributed to The NetBSD Foundation
  10  * by Bill Sommerfeld
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. All advertising materials mentioning features or use of this software
  21  *    must display the following acknowledgement:
  22  *        This product includes software developed by the NetBSD
  23  *        Foundation, Inc. and its contributors.
  24  * 4. Neither the name of The NetBSD Foundation nor the names of its
  25  *    contributors may be used to endorse or promote products derived
  26  *    from this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGE.
  39  */
  40
  41 /*
  42  * Am79c930 chip driver.
  43  *
  44  * This is used by the awi driver to use the shared
  45  * memory attached to the 79c930 to communicate with the firmware running
  46  * in the 930's on-board 80188 core.
  47  *
  48  * The 79c930 can be mapped into just I/O space, or also have a
  49  * memory mapping; the mapping must be set up by the bus front-end
  50  * before am79c930_init is called.
  51  */
  52
  53 /*
  54  * operations:
  55  *
  56  * read_8, read_16, read_32, read_64, read_bytes
  57  * write_8, write_16, write_32, write_64, write_bytes
  58  * (two versions, depending on whether memory-space or i/o space is in use).
  59  *
  60  * interrupt E.C.
  61  * start isr
  62  * end isr
  63  */
  64
  65 #include <sys/param.h>
  66 #include <sys/systm.h>
  67 #ifndef __FreeBSD__
  68 #include <sys/device.h>
  69 #endif
  70
  71 #include <machine/cpu.h>
  72 #ifdef __FreeBSD__
  73 #include <machine/bus_pio.h>
  74 #include <machine/bus_memio.h>
  75 #endif
  76 #include <machine/bus.h>
  77 #ifdef __NetBSD__
  78 #include <machine/intr.h>
  79 #endif
  80
  81 #ifdef __NetBSD__
  82 #include <dev/ic/am79c930reg.h>
  83 #include <dev/ic/am79c930var.h>
  84 #endif
  85 #ifdef __FreeBSD__
  86 #include "am79c930reg.h"
  87 #include "am79c930var.h"
  88 #endif
  89
  90 #define AM930_DELAY(x) /*nothing*/
  91
  92 void am79c930_regdump (struct am79c930_softc *sc);
  93
  94 static void io_write_1 (struct am79c930_softc *, u_int32_t, u_int8_t);
  95 static void io_write_2 (struct am79c930_softc *, u_int32_t, u_int16_t);
  96 static void io_write_4 (struct am79c930_softc *, u_int32_t, u_int32_t);
  97 static void io_write_bytes (struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
  98
  99 static u_int8_t io_read_1 (struct am79c930_softc *, u_int32_t);
 100 static u_int16_t io_read_2 (struct am79c930_softc *, u_int32_t);
 101 static u_int32_t io_read_4 (struct am79c930_softc *, u_int32_t);
 102 static void io_read_bytes (struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
 103
 104 static void mem_write_1 (struct am79c930_softc *, u_int32_t, u_int8_t);
 105 static void mem_write_2 (struct am79c930_softc *, u_int32_t, u_int16_t);
 106 static void mem_write_4 (struct am79c930_softc *, u_int32_t, u_int32_t);
 107 static void mem_write_bytes (struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
 108
 109 static u_int8_t mem_read_1 (struct am79c930_softc *, u_int32_t);
 110 static u_int16_t mem_read_2 (struct am79c930_softc *, u_int32_t);
 111 static u_int32_t mem_read_4 (struct am79c930_softc *, u_int32_t);
 112 static void mem_read_bytes (struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
 113
 114 static struct am79c930_ops iospace_ops = {
 115         io_write_1,
 116         io_write_2,
 117         io_write_4,
 118         io_write_bytes,
 119         io_read_1,
 120         io_read_2,
 121         io_read_4,
 122         io_read_bytes
 123 };
 124
 125 struct am79c930_ops memspace_ops = {
 126         mem_write_1,
 127         mem_write_2,
 128         mem_write_4,
 129         mem_write_bytes,
 130         mem_read_1,
 131         mem_read_2,
 132         mem_read_4,
 133         mem_read_bytes
 134 };
 135
 136 static void io_write_1 (sc, off, val)
 137         struct am79c930_softc *sc;
 138         u_int32_t off;
 139         u_int8_t val;
 140 {
 141         AM930_DELAY(1);
 142         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 143             ((off>>8)& 0x7f));
 144         AM930_DELAY(1);
 145         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
 146         AM930_DELAY(1);
 147         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA, val);
 148         AM930_DELAY(1);
 149 }
 150
 151 static void io_write_2 (sc, off, val)
 152         struct am79c930_softc *sc;
 153         u_int32_t off;
 154         u_int16_t val;
 155 {
 156         AM930_DELAY(1);
 157         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 158             ((off>>8)& 0x7f));
 159         AM930_DELAY(1);
 160         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
 161         AM930_DELAY(1);
 162         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, val & 0xff);
 163         AM930_DELAY(1);
 164         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, (val>>8)&0xff);
 165         AM930_DELAY(1);
 166 }
 167
 168 static void io_write_4 (sc, off, val)
 169         struct am79c930_softc *sc;
 170         u_int32_t off;
 171         u_int32_t val;
 172 {
 173         AM930_DELAY(1);
 174         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 175             ((off>>8)& 0x7f));
 176         AM930_DELAY(1);
 177         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
 178         AM930_DELAY(1);
 179         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,val & 0xff);
 180         AM930_DELAY(1);
 181         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>8)&0xff);
 182         AM930_DELAY(1);
 183         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>16)&0xff);
 184         AM930_DELAY(1);
 185         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>24)&0xff);
 186         AM930_DELAY(1);
 187 }
 188
 189 static void io_write_bytes (sc, off, ptr, len)
 190         struct am79c930_softc *sc;
 191         u_int32_t off;
 192         u_int8_t *ptr;
 193         size_t len;
 194 {
 195         int i;
 196
 197         AM930_DELAY(1);
 198         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 199             ((off>>8)& 0x7f));
 200         AM930_DELAY(1);
 201         bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
 202         AM930_DELAY(1);
 203         for (i=0; i<len; i++)
 204                 bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,ptr[i]);
 205 }
 206
 207 static u_int8_t io_read_1 (sc, off)
 208         struct am79c930_softc *sc;
 209         u_int32_t off;
 210 {
 211         u_int8_t val;
 212
 213         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 214             ((off>>8)& 0x7f));
 215         AM930_DELAY(1);
 216         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
 217         AM930_DELAY(1);
 218         val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
 219         AM930_DELAY(1);
 220         return val;
 221 }
 222
 223 static u_int16_t io_read_2 (sc, off)
 224         struct am79c930_softc *sc;
 225         u_int32_t off;
 226 {
 227         u_int16_t val;
 228
 229         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 230             ((off>>8)& 0x7f));
 231         AM930_DELAY(1);
 232         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
 233         AM930_DELAY(1);
 234         val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
 235         AM930_DELAY(1);
 236         val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
 237         AM930_DELAY(1);
 238         return val;
 239 }
 240
 241 static u_int32_t io_read_4 (sc, off)
 242         struct am79c930_softc *sc;
 243         u_int32_t off;
 244 {
 245         u_int32_t val;
 246
 247         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 248             ((off>>8)& 0x7f));
 249         AM930_DELAY(1);
 250         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
 251         AM930_DELAY(1);
 252         val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
 253         AM930_DELAY(1);
 254         val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
 255         AM930_DELAY(1);
 256         val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 16;
 257         AM930_DELAY(1);
 258         val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 24;
 259         AM930_DELAY(1);
 260         return val;
 261 }
 262
 263 static void io_read_bytes (sc, off, ptr, len)
 264         struct am79c930_softc *sc;
 265         u_int32_t off;
 266         u_int8_t *ptr;
 267         size_t len;
 268 {
 269         int i;
 270
 271         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
 272             ((off>>8)& 0x7f));
 273         AM930_DELAY(1);
 274         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
 275         AM930_DELAY(1);
 276         for (i=0; i<len; i++)
 277                 ptr[i] = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
 278                     AM79C930_IODPA);
 279 }
 280
 281 static void mem_write_1 (sc, off, val)
 282         struct am79c930_softc *sc;
 283         u_int32_t off;
 284         u_int8_t val;
 285 {
 286         bus_space_write_1(sc->sc_memt, sc->sc_memh, off, val);
 287 }
 288
 289 static void mem_write_2 (sc, off, val)
 290         struct am79c930_softc *sc;
 291         u_int32_t off;
 292         u_int16_t val;
 293 {
 294         bus_space_tag_t t = sc->sc_memt;
 295         bus_space_handle_t h = sc->sc_memh;
 296
 297         /* could be unaligned */
 298         if ((off & 0x1) == 0)
 299                 bus_space_write_2(t, h, off,    val);
 300         else {
 301                 bus_space_write_1(t, h, off,    val        & 0xff);
 302                 bus_space_write_1(t, h, off+1, (val >>  8) & 0xff);
 303         }
 304 }
 305
 306 static void mem_write_4 (sc, off, val)
 307         struct am79c930_softc *sc;
 308         u_int32_t off;
 309         u_int32_t val;
 310 {
 311         bus_space_tag_t t = sc->sc_memt;
 312         bus_space_handle_t h = sc->sc_memh;
 313
 314         /* could be unaligned */
 315         if ((off & 0x3) == 0)
 316                 bus_space_write_4(t, h, off,    val);
 317         else {
 318                 bus_space_write_1(t, h, off,    val        & 0xff);
 319                 bus_space_write_1(t, h, off+1, (val >>  8) & 0xff);
 320                 bus_space_write_1(t, h, off+2, (val >> 16) & 0xff);
 321                 bus_space_write_1(t, h, off+3, (val >> 24) & 0xff);
 322         }
 323 }
 324
 325 static void mem_write_bytes (sc, off, ptr, len)
 326         struct am79c930_softc *sc;
 327         u_int32_t off;
 328         u_int8_t *ptr;
 329         size_t len;
 330 {
 331         bus_space_write_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
 332 }
 333
 334
 335 static u_int8_t mem_read_1 (sc, off)
 336         struct am79c930_softc *sc;
 337         u_int32_t off;
 338 {
 339         return bus_space_read_1(sc->sc_memt, sc->sc_memh, off);
 340 }
 341
 342 static u_int16_t mem_read_2 (sc, off)
 343         struct am79c930_softc *sc;
 344         u_int32_t off;
 345 {
 346         /* could be unaligned */
 347         if ((off & 0x1) == 0)
 348                 return bus_space_read_2(sc->sc_memt, sc->sc_memh, off);
 349         else
 350                 return
 351                      bus_space_read_1(sc->sc_memt, sc->sc_memh, off  )       |
 352                     (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) << 8);
 353 }
 354
 355 static u_int32_t mem_read_4 (sc, off)
 356         struct am79c930_softc *sc;
 357         u_int32_t off;
 358 {
 359         /* could be unaligned */
 360         if ((off & 0x3) == 0)
 361                 return bus_space_read_4(sc->sc_memt, sc->sc_memh, off);
 362         else
 363                 return
 364                      bus_space_read_1(sc->sc_memt, sc->sc_memh, off  )       |
 365                     (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) << 8) |
 366                     (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+2) <<16) |
 367                     (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+3) <<24);
 368 }
 369
 370
 371
 372 static void mem_read_bytes (sc, off, ptr, len)
 373         struct am79c930_softc *sc;
 374         u_int32_t off;
 375         u_int8_t *ptr;
 376         size_t len;
 377 {
 378         bus_space_read_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
 379 }
 380
 381
 382
 383
 384 /*
 385  * Set bits in GCR.
 386  */
 387
 388 void am79c930_gcr_setbits (sc, bits)
 389         struct am79c930_softc *sc;
 390         u_int8_t bits;
 391 {
 392         u_int8_t gcr = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
 393
 394         gcr |= bits;
 395
 396         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_GCR, gcr);
 397 }
 398
 399 /*
 400  * Clear bits in GCR.
 401  */
 402
 403 void am79c930_gcr_clearbits (sc, bits)
 404         struct am79c930_softc *sc;
 405         u_int8_t bits;
 406 {
 407         u_int8_t gcr = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
 408
 409         gcr &= ~bits;
 410
 411         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_GCR, gcr);
 412 }
 413
 414 u_int8_t am79c930_gcr_read (sc)
 415         struct am79c930_softc *sc;
 416 {
 417         return bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
 418 }
 419
 420 #if 0
 421 void am79c930_regdump (sc)
 422         struct am79c930_softc *sc;
 423 {
 424         u_int8_t buf[8];
 425         int i;
 426
 427         AM930_DELAY(5);
 428         for (i=0; i<8; i++) {
 429                 buf[i] = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, i);
 430                 AM930_DELAY(5);
 431         }
 432         printf("am79c930: regdump:");
 433         for (i=0; i<8; i++) {
 434                 printf(" %02x", buf[i]);
 435         }
 436         printf("\n");
 437 }
 438 #endif
 439
 440 void am79c930_chip_init (sc, how)
 441         struct am79c930_softc *sc;
 442 {
 443         /* zero the bank select register, and leave it that way.. */
 444         bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_BSS, 0);
 445         if (how)
 446                 sc->sc_ops = &memspace_ops;
 447         else
 448                 sc->sc_ops = &iospace_ops;
 449 }
 450
 451