we.c revision 1.3
1 /* $NetBSD: we.c,v 1.3 2001/07/04 11:14:11 jdolecek 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 Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet 42 * adapters. 43 * 44 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. 45 * 46 * Copyright (C) 1993, David Greenman. This software may be used, modified, 47 * copied, distributed, and sold, in both source and binary form provided that 48 * the above copyright and these terms are retained. Under no circumstances is 49 * the author responsible for the proper functioning of this software, nor does 50 * the author assume any responsibility for damages incurred with its use. 51 */ 52 53 /* 54 * Device driver for the Western Digital/SMC 8003 and 8013 series, 55 * and the SMC Elite Ultra (8216). 56 */ 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/device.h> 61 #include <sys/socket.h> 62 #include <sys/mbuf.h> 63 #include <sys/syslog.h> 64 65 #include <net/if.h> 66 #include <net/if_dl.h> 67 #include <net/if_types.h> 68 #include <net/if_media.h> 69 70 #include <net/if_ether.h> 71 72 #include <machine/bus.h> 73 #include <machine/bswap.h> 74 #include <machine/intr.h> 75 76 #include <dev/isa/isareg.h> 77 #include <dev/isa/isavar.h> 78 79 #include <dev/ic/dp8390reg.h> 80 #include <dev/ic/dp8390var.h> 81 #include <dev/ic/wereg.h> 82 #include <dev/ic/wevar.h> 83 84 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 85 #define bus_space_read_region_stream_2 bus_space_read_region_2 86 #define bus_space_write_stream_2 bus_space_write_2 87 #define bus_space_write_region_stream_2 bus_space_write_region_2 88 #endif 89 90 static void we_set_media __P((struct we_softc *, int)); 91 92 static void we_media_init __P((struct dp8390_softc *)); 93 94 static int we_mediachange __P((struct dp8390_softc *)); 95 static void we_mediastatus __P((struct dp8390_softc *, struct ifmediareq *)); 96 97 static void we_recv_int __P((struct dp8390_softc *)); 98 static void we_init_card __P((struct dp8390_softc *)); 99 static int we_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int)); 100 static int we_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short)); 101 static void we_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *)); 102 static int we_test_mem __P((struct dp8390_softc *)); 103 104 static __inline void we_readmem __P((struct we_softc *, int, u_int8_t *, int)); 105 106 /* 107 * Delay needed when switching 16-bit access to shared memory. 108 */ 109 #define WE_DELAY(wsc) delay(3) 110 111 /* 112 * Enable card RAM, and 16-bit access. 113 */ 114 #define WE_MEM_ENABLE(wsc) \ 115 do { \ 116 if ((wsc)->sc_16bitp) \ 117 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 118 WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \ 119 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 120 WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \ 121 WE_DELAY((wsc)); \ 122 } while (0) 123 124 /* 125 * Disable card RAM, and 16-bit access. 126 */ 127 #define WE_MEM_DISABLE(wsc) \ 128 do { \ 129 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 130 WE_MSR, (wsc)->sc_msr_proto); \ 131 if ((wsc)->sc_16bitp) \ 132 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 133 WE_LAAR, (wsc)->sc_laar_proto); \ 134 WE_DELAY((wsc)); \ 135 } while (0) 136 137 int 138 we_config(self, wsc, typestr) 139 struct device *self; 140 struct we_softc *wsc; 141 const char *typestr; 142 { 143 struct dp8390_softc *sc = &wsc->sc_dp8390; 144 u_int8_t x; 145 int i, forced_16bit = 0; 146 147 /* 148 * Allow user to override 16-bit mode. 8-bit takes precedence. 149 */ 150 if (self->dv_cfdata->cf_flags & DP8390_FORCE_16BIT_MODE) { 151 wsc->sc_16bitp = 1; 152 forced_16bit = 1; 153 } 154 if (self->dv_cfdata->cf_flags & DP8390_FORCE_8BIT_MODE) 155 wsc->sc_16bitp = 0; 156 157 /* Registers are linear. */ 158 for (i = 0; i < 16; i++) 159 sc->sc_reg_map[i] = i; 160 161 /* Now we can use the NIC_{GET,PUT}() macros. */ 162 163 printf("%s: %s Ethernet (%s-bit)\n", sc->sc_dev.dv_xname, 164 typestr, wsc->sc_16bitp ? "16" : "8"); 165 166 /* Get station address from EEPROM. */ 167 for (i = 0; i < ETHER_ADDR_LEN; i++) 168 sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict, 169 wsc->sc_asich, WE_PROM + i); 170 171 /* 172 * Set upper address bits and 8/16 bit access to shared memory. 173 */ 174 if (sc->is790) { 175 wsc->sc_laar_proto = 176 bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) & 177 ~WE_LAAR_M16EN; 178 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 179 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 180 } else if ((wsc->sc_type & WE_SOFTCONFIG) || 181 #ifdef TOSH_ETHER 182 (wsc->sc_type == WE_TYPE_TOSHIBA1) || 183 (wsc->sc_type == WE_TYPE_TOSHIBA4) || 184 #endif 185 (forced_16bit) || 186 (wsc->sc_type == WE_TYPE_WD8013EBT)) { 187 wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI; 188 if (wsc->sc_16bitp) 189 wsc->sc_laar_proto |= WE_LAAR_L16EN; 190 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 191 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 192 } 193 194 /* 195 * Set address and enable interface shared memory. 196 */ 197 if (sc->is790) { 198 /* XXX MAGIC CONSTANTS XXX */ 199 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x04); 200 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x | 0x80); 201 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x0b, 202 ((wsc->sc_maddr >> 13) & 0x0f) | 203 ((wsc->sc_maddr >> 11) & 0x40) | 204 (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x0b) & 0xb0)); 205 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x); 206 wsc->sc_msr_proto = 0x00; 207 sc->cr_proto = 0x00; 208 } else { 209 #ifdef TOSH_ETHER 210 if (wsc->sc_type == WE_TYPE_TOSHIBA1 || 211 wsc->sc_type == WE_TYPE_TOSHIBA4) { 212 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 213 WE_MSR + 1, 214 ((wsc->sc_maddr >> 8) & 0xe0) | 0x04); 215 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 216 WE_MSR + 2, 217 ((wsc->sc_maddr >> 16) & 0x0f)); 218 wsc->sc_msr_proto = WE_MSR_POW; 219 } else 220 #endif 221 wsc->sc_msr_proto = (wsc->sc_maddr >> 13) & 222 WE_MSR_ADDR; 223 224 sc->cr_proto = ED_CR_RD2; 225 } 226 227 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR, 228 wsc->sc_msr_proto | WE_MSR_MENB); 229 WE_DELAY(wsc); 230 231 /* 232 * DCR gets: 233 * 234 * FIFO threshold to 8, No auto-init Remote DMA, 235 * byte order=80x86. 236 * 237 * 16-bit cards also get word-wide DMA transfers. 238 */ 239 sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 240 (wsc->sc_16bitp ? ED_DCR_WTS : 0); 241 242 sc->test_mem = we_test_mem; 243 sc->ring_copy = we_ring_copy; 244 sc->write_mbuf = we_write_mbuf; 245 sc->read_hdr = we_read_hdr; 246 sc->recv_int = we_recv_int; 247 sc->init_card = we_init_card; 248 249 sc->sc_mediachange = we_mediachange; 250 sc->sc_mediastatus = we_mediastatus; 251 252 sc->mem_start = 0; 253 /* sc->mem_size has to be set by frontend */ 254 255 sc->sc_flags = self->dv_cfdata->cf_flags; 256 257 /* Do generic parts of attach. */ 258 if (wsc->sc_type & WE_SOFTCONFIG) 259 sc->sc_media_init = we_media_init; 260 else 261 sc->sc_media_init = dp8390_media_init; 262 if (dp8390_config(sc)) { 263 printf("%s: configuration failed\n", sc->sc_dev.dv_xname); 264 return (1); 265 } 266 267 /* 268 * Disable 16-bit access to shared memory - we leave it disabled 269 * so that: 270 * 271 * (1) machines reboot properly when the board is set to 272 * 16-bit mode and there are conflicting 8-bit devices 273 * within the same 128k address space as this board's 274 * shared memory, and 275 * 276 * (2) so that other 8-bit devices with shared memory 277 * in this same 128k address space will work. 278 */ 279 WE_MEM_DISABLE(wsc); 280 281 return (0); 282 } 283 284 static int 285 we_test_mem(sc) 286 struct dp8390_softc *sc; 287 { 288 struct we_softc *wsc = (struct we_softc *)sc; 289 bus_space_tag_t memt = sc->sc_buft; 290 bus_space_handle_t memh = sc->sc_bufh; 291 bus_size_t memsize = sc->mem_size; 292 int i; 293 294 if (wsc->sc_16bitp) 295 bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1); 296 else 297 bus_space_set_region_1(memt, memh, 0, 0, memsize); 298 299 if (wsc->sc_16bitp) { 300 for (i = 0; i < memsize; i += 2) { 301 if (bus_space_read_2(memt, memh, i) != 0) 302 goto fail; 303 } 304 } else { 305 for (i = 0; i < memsize; i++) { 306 if (bus_space_read_1(memt, memh, i) != 0) 307 goto fail; 308 } 309 } 310 311 return (0); 312 313 fail: 314 printf("%s: failed to clear shared memory at offset 0x%x\n", 315 sc->sc_dev.dv_xname, i); 316 WE_MEM_DISABLE(wsc); 317 return (1); 318 } 319 320 /* 321 * Given a NIC memory source address and a host memory destination address, 322 * copy 'len' from NIC to host using shared memory. The 'len' is rounded 323 * up to a word - ok as long as mbufs are word-sized. 324 */ 325 static __inline void 326 we_readmem(wsc, from, to, len) 327 struct we_softc *wsc; 328 int from; 329 u_int8_t *to; 330 int len; 331 { 332 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 333 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 334 335 if (len & 1) 336 ++len; 337 338 if (wsc->sc_16bitp) 339 bus_space_read_region_stream_2(memt, memh, from, 340 (u_int16_t *)to, len >> 1); 341 else 342 bus_space_read_region_1(memt, memh, from, 343 to, len); 344 } 345 346 static int 347 we_write_mbuf(sc, m, buf) 348 struct dp8390_softc *sc; 349 struct mbuf *m; 350 int buf; 351 { 352 struct we_softc *wsc = (struct we_softc *)sc; 353 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 354 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 355 u_int8_t *data, savebyte[2]; 356 int savelen, len, leftover; 357 #ifdef DIAGNOSTIC 358 u_int8_t *lim; 359 #endif 360 361 savelen = m->m_pkthdr.len; 362 363 WE_MEM_ENABLE(wsc); 364 365 /* 366 * 8-bit boards are simple; no alignment tricks are necessary. 367 */ 368 if (wsc->sc_16bitp == 0) { 369 for (; m != NULL; buf += m->m_len, m = m->m_next) 370 bus_space_write_region_1(memt, memh, 371 buf, mtod(m, u_int8_t *), m->m_len); 372 goto out; 373 } 374 375 /* Start out with no leftover data. */ 376 leftover = 0; 377 savebyte[0] = savebyte[1] = 0; 378 379 for (; m != NULL; m = m->m_next) { 380 len = m->m_len; 381 if (len == 0) 382 continue; 383 data = mtod(m, u_int8_t *); 384 #ifdef DIAGNOSTIC 385 lim = data + len; 386 #endif 387 while (len > 0) { 388 if (leftover) { 389 /* 390 * Data left over (from mbuf or realignment). 391 * Buffer the next byte, and write it and 392 * the leftover data out. 393 */ 394 savebyte[1] = *data++; 395 len--; 396 bus_space_write_stream_2(memt, memh, buf, 397 *(u_int16_t *)savebyte); 398 buf += 2; 399 leftover = 0; 400 } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t) 401 == 0) { 402 /* 403 * Unaligned dta; buffer the next byte. 404 */ 405 savebyte[0] = *data++; 406 len--; 407 leftover = 1; 408 } else { 409 /* 410 * Aligned data; output contiguous words as 411 * much as we can, then buffer the remaining 412 * byte, if any. 413 */ 414 leftover = len & 1; 415 len &= ~1; 416 bus_space_write_region_stream_2(memt, memh, 417 buf, (u_int16_t *)data, len >> 1); 418 data += len; 419 buf += len; 420 if (leftover) 421 savebyte[0] = *data++; 422 len = 0; 423 } 424 } 425 if (len < 0) 426 panic("we_write_mbuf: negative len"); 427 #ifdef DIAGNOSTIC 428 if (data != lim) 429 panic("we_write_mbuf: data != lim"); 430 #endif 431 } 432 if (leftover) { 433 savebyte[1] = 0; 434 bus_space_write_stream_2(memt, memh, buf, 435 *(u_int16_t *)savebyte); 436 } 437 438 out: 439 WE_MEM_DISABLE(wsc); 440 441 return (savelen); 442 } 443 444 static int 445 we_ring_copy(sc, src, dst, amount) 446 struct dp8390_softc *sc; 447 int src; 448 caddr_t dst; 449 u_short amount; 450 { 451 struct we_softc *wsc = (struct we_softc *)sc; 452 u_short tmp_amount; 453 454 /* Does copy wrap to lower addr in ring buffer? */ 455 if (src + amount > sc->mem_end) { 456 tmp_amount = sc->mem_end - src; 457 458 /* Copy amount up to end of NIC memory. */ 459 we_readmem(wsc, src, dst, tmp_amount); 460 461 amount -= tmp_amount; 462 src = sc->mem_ring; 463 dst += tmp_amount; 464 } 465 466 we_readmem(wsc, src, dst, amount); 467 468 return (src + amount); 469 } 470 471 static void 472 we_read_hdr(sc, packet_ptr, packet_hdrp) 473 struct dp8390_softc *sc; 474 int packet_ptr; 475 struct dp8390_ring *packet_hdrp; 476 { 477 struct we_softc *wsc = (struct we_softc *)sc; 478 479 we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp, 480 sizeof(struct dp8390_ring)); 481 #if BYTE_ORDER == BIG_ENDIAN 482 packet_hdrp->count = bswap16(packet_hdrp->count); 483 #endif 484 } 485 486 static void 487 we_recv_int(sc) 488 struct dp8390_softc *sc; 489 { 490 struct we_softc *wsc = (struct we_softc *)sc; 491 492 WE_MEM_ENABLE(wsc); 493 dp8390_rint(sc); 494 WE_MEM_DISABLE(wsc); 495 } 496 497 static void 498 we_media_init(struct dp8390_softc *sc) 499 { 500 struct we_softc *wsc = (void *) sc; 501 int defmedia = IFM_ETHER; 502 u_int8_t x; 503 504 if (sc->is790) { 505 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); 506 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 507 x | WE790_HWR_SWH); 508 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & 509 WE790_GCR_GPOUT) 510 defmedia |= IFM_10_2; 511 else 512 defmedia |= IFM_10_5; 513 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 514 x & ~WE790_HWR_SWH); 515 } else { 516 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 517 if (x & WE_IRR_OUT2) 518 defmedia |= IFM_10_2; 519 else 520 defmedia |= IFM_10_5; 521 } 522 523 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 524 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL); 525 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL); 526 ifmedia_set(&sc->sc_media, defmedia); 527 } 528 529 static int 530 we_mediachange(sc) 531 struct dp8390_softc *sc; 532 { 533 534 /* 535 * Current media is already set up. Just reset the interface 536 * to let the new value take hold. The new media will be 537 * set up in we_init_card() called via dp8390_init(). 538 */ 539 dp8390_reset(sc); 540 return (0); 541 } 542 543 static void 544 we_mediastatus(sc, ifmr) 545 struct dp8390_softc *sc; 546 struct ifmediareq *ifmr; 547 { 548 struct ifmedia *ifm = &sc->sc_media; 549 550 /* 551 * The currently selected media is always the active media. 552 */ 553 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 554 } 555 556 static void 557 we_init_card(sc) 558 struct dp8390_softc *sc; 559 { 560 struct we_softc *wsc = (struct we_softc *)sc; 561 struct ifmedia *ifm = &sc->sc_media; 562 563 if (wsc->sc_init_hook) 564 (*wsc->sc_init_hook)(wsc); 565 566 we_set_media(wsc, ifm->ifm_cur->ifm_media); 567 } 568 569 static void 570 we_set_media(wsc, media) 571 struct we_softc *wsc; 572 int media; 573 { 574 struct dp8390_softc *sc = &wsc->sc_dp8390; 575 bus_space_tag_t asict = wsc->sc_asict; 576 bus_space_handle_t asich = wsc->sc_asich; 577 u_int8_t hwr, gcr, irr; 578 579 if (sc->is790) { 580 hwr = bus_space_read_1(asict, asich, WE790_HWR); 581 bus_space_write_1(asict, asich, WE790_HWR, 582 hwr | WE790_HWR_SWH); 583 gcr = bus_space_read_1(asict, asich, WE790_GCR); 584 if (IFM_SUBTYPE(media) == IFM_10_2) 585 gcr |= WE790_GCR_GPOUT; 586 else 587 gcr &= ~WE790_GCR_GPOUT; 588 bus_space_write_1(asict, asich, WE790_GCR, 589 gcr | WE790_GCR_LIT); 590 bus_space_write_1(asict, asich, WE790_HWR, 591 hwr & ~WE790_HWR_SWH); 592 return; 593 } 594 595 irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 596 if (IFM_SUBTYPE(media) == IFM_10_2) 597 irr |= WE_IRR_OUT2; 598 else 599 irr &= ~WE_IRR_OUT2; 600 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); 601 } 602
Indexes created Thu Sep 25 02:09:54 GMT 2025