we.c revision 1.1
1 /* $NetBSD: we.c,v 1.1 2001/03/23 17:34:41 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 "opt_inet.h" 59 #include "opt_ns.h" 60 #include "bpfilter.h" 61 #include "rnd.h" 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/device.h> 66 #include <sys/socket.h> 67 #include <sys/mbuf.h> 68 #include <sys/syslog.h> 69 70 #include <net/if.h> 71 #include <net/if_dl.h> 72 #include <net/if_types.h> 73 #include <net/if_media.h> 74 75 #include <net/if_ether.h> 76 77 #ifdef INET 78 #include <netinet/in.h> 79 #include <netinet/in_systm.h> 80 #include <netinet/in_var.h> 81 #include <netinet/ip.h> 82 #include <netinet/if_inarp.h> 83 #endif 84 85 #ifdef NS 86 #include <netns/ns.h> 87 #include <netns/ns_if.h> 88 #endif 89 90 #if NBPFILTER > 0 91 #include <net/bpf.h> 92 #include <net/bpfdesc.h> 93 #endif 94 95 #include <machine/bus.h> 96 #include <machine/bswap.h> 97 #include <machine/intr.h> 98 99 #include <dev/isa/isareg.h> 100 #include <dev/isa/isavar.h> 101 102 #include <dev/ic/dp8390reg.h> 103 #include <dev/ic/dp8390var.h> 104 #include <dev/ic/wereg.h> 105 #include <dev/ic/wevar.h> 106 107 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 108 #define bus_space_read_region_stream_2 bus_space_read_region_2 109 #define bus_space_write_stream_2 bus_space_write_2 110 #define bus_space_write_region_stream_2 bus_space_write_region_2 111 #endif 112 113 static void we_set_media __P((struct we_softc *, int)); 114 115 static void we_media_init __P((struct dp8390_softc *)); 116 117 static int we_mediachange __P((struct dp8390_softc *)); 118 static void we_mediastatus __P((struct dp8390_softc *, struct ifmediareq *)); 119 120 static void we_recv_int __P((struct dp8390_softc *)); 121 static void we_init_card __P((struct dp8390_softc *)); 122 static int we_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int)); 123 static int we_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short)); 124 static void we_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *)); 125 static int we_test_mem __P((struct dp8390_softc *)); 126 127 static __inline void we_readmem __P((struct we_softc *, int, u_int8_t *, int)); 128 129 /* 130 * Delay needed when switching 16-bit access to shared memory. 131 */ 132 #define WE_DELAY(wsc) delay(3) 133 134 /* 135 * Enable card RAM, and 16-bit access. 136 */ 137 #define WE_MEM_ENABLE(wsc) \ 138 do { \ 139 if ((wsc)->sc_16bitp) \ 140 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 141 WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \ 142 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 143 WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \ 144 WE_DELAY((wsc)); \ 145 } while (0) 146 147 /* 148 * Disable card RAM, and 16-bit access. 149 */ 150 #define WE_MEM_DISABLE(wsc) \ 151 do { \ 152 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 153 WE_MSR, (wsc)->sc_msr_proto); \ 154 if ((wsc)->sc_16bitp) \ 155 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 156 WE_LAAR, (wsc)->sc_laar_proto); \ 157 WE_DELAY((wsc)); \ 158 } while (0) 159 160 int 161 we_config(self, wsc, typestr) 162 struct device *self; 163 struct we_softc *wsc; 164 const char *typestr; 165 { 166 struct dp8390_softc *sc = &wsc->sc_dp8390; 167 u_int8_t x; 168 int i, forced_16bit = 0; 169 170 /* 171 * Allow user to override 16-bit mode. 8-bit takes precedence. 172 */ 173 if (self->dv_cfdata->cf_flags & WE_FLAGS_FORCE_16BIT_MODE) { 174 wsc->sc_16bitp = 1; 175 forced_16bit = 1; 176 } 177 if (self->dv_cfdata->cf_flags & WE_FLAGS_FORCE_8BIT_MODE) 178 wsc->sc_16bitp = 0; 179 180 /* Registers are linear. */ 181 for (i = 0; i < 16; i++) 182 sc->sc_reg_map[i] = i; 183 184 /* Now we can use the NIC_{GET,PUT}() macros. */ 185 186 printf("%s: %s Ethernet (%s-bit)\n", sc->sc_dev.dv_xname, 187 typestr, wsc->sc_16bitp ? "16" : "8"); 188 189 /* Get station address from EEPROM. */ 190 for (i = 0; i < ETHER_ADDR_LEN; i++) 191 sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict, 192 wsc->sc_asich, WE_PROM + i); 193 194 /* 195 * Set upper address bits and 8/16 bit access to shared memory. 196 */ 197 if (sc->is790) { 198 wsc->sc_laar_proto = 199 bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) & 200 ~WE_LAAR_M16EN; 201 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 202 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 203 } else if ((wsc->sc_type & WE_SOFTCONFIG) || 204 #ifdef TOSH_ETHER 205 (wsc->sc_type == WE_TYPE_TOSHIBA1) || 206 (wsc->sc_type == WE_TYPE_TOSHIBA4) || 207 #endif 208 (forced_16bit) || 209 (wsc->sc_type == WE_TYPE_WD8013EBT)) { 210 wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI; 211 if (wsc->sc_16bitp) 212 wsc->sc_laar_proto |= WE_LAAR_L16EN; 213 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 214 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 215 } 216 217 /* 218 * Set address and enable interface shared memory. 219 */ 220 if (sc->is790) { 221 /* XXX MAGIC CONSTANTS XXX */ 222 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x04); 223 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x | 0x80); 224 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x0b, 225 ((wsc->sc_maddr >> 13) & 0x0f) | 226 ((wsc->sc_maddr >> 11) & 0x40) | 227 (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x0b) & 0xb0)); 228 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x); 229 wsc->sc_msr_proto = 0x00; 230 sc->cr_proto = 0x00; 231 } else { 232 #ifdef TOSH_ETHER 233 if (wsc->sc_type == WE_TYPE_TOSHIBA1 || 234 wsc->sc_type == WE_TYPE_TOSHIBA4) { 235 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 236 WE_MSR + 1, 237 ((wsc->sc_maddr >> 8) & 0xe0) | 0x04); 238 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 239 WE_MSR + 2, 240 ((wsc->sc_maddr >> 16) & 0x0f)); 241 wsc->sc_msr_proto = WE_MSR_POW; 242 } else 243 #endif 244 wsc->sc_msr_proto = (wsc->sc_maddr >> 13) & 245 WE_MSR_ADDR; 246 247 sc->cr_proto = ED_CR_RD2; 248 } 249 250 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR, 251 wsc->sc_msr_proto | WE_MSR_MENB); 252 WE_DELAY(wsc); 253 254 /* 255 * DCR gets: 256 * 257 * FIFO threshold to 8, No auto-init Remote DMA, 258 * byte order=80x86. 259 * 260 * 16-bit cards also get word-wide DMA transfers. 261 */ 262 sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 263 (wsc->sc_16bitp ? ED_DCR_WTS : 0); 264 265 sc->test_mem = we_test_mem; 266 sc->ring_copy = we_ring_copy; 267 sc->write_mbuf = we_write_mbuf; 268 sc->read_hdr = we_read_hdr; 269 sc->recv_int = we_recv_int; 270 sc->init_card = we_init_card; 271 272 sc->sc_mediachange = we_mediachange; 273 sc->sc_mediastatus = we_mediastatus; 274 275 sc->mem_start = 0; 276 /* sc->mem_size has to be set by frontend */ 277 278 sc->sc_flags = self->dv_cfdata->cf_flags; 279 280 /* Do generic parts of attach. */ 281 if (wsc->sc_type & WE_SOFTCONFIG) 282 sc->sc_media_init = we_media_init; 283 else 284 sc->sc_media_init = dp8390_media_init; 285 if (dp8390_config(sc)) { 286 printf("%s: configuration failed\n", sc->sc_dev.dv_xname); 287 return (1); 288 } 289 290 /* 291 * Disable 16-bit access to shared memory - we leave it disabled 292 * so that: 293 * 294 * (1) machines reboot properly when the board is set to 295 * 16-bit mode and there are conflicting 8-bit devices 296 * within the same 128k address space as this board's 297 * shared memory, and 298 * 299 * (2) so that other 8-bit devices with shared memory 300 * in this same 128k address space will work. 301 */ 302 WE_MEM_DISABLE(wsc); 303 304 return (0); 305 } 306 307 static int 308 we_test_mem(sc) 309 struct dp8390_softc *sc; 310 { 311 struct we_softc *wsc = (struct we_softc *)sc; 312 bus_space_tag_t memt = sc->sc_buft; 313 bus_space_handle_t memh = sc->sc_bufh; 314 bus_size_t memsize = sc->mem_size; 315 int i; 316 317 if (wsc->sc_16bitp) 318 bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1); 319 else 320 bus_space_set_region_1(memt, memh, 0, 0, memsize); 321 322 if (wsc->sc_16bitp) { 323 for (i = 0; i < memsize; i += 2) { 324 if (bus_space_read_2(memt, memh, i) != 0) 325 goto fail; 326 } 327 } else { 328 for (i = 0; i < memsize; i++) { 329 if (bus_space_read_1(memt, memh, i) != 0) 330 goto fail; 331 } 332 } 333 334 return (0); 335 336 fail: 337 printf("%s: failed to clear shared memory at offset 0x%x\n", 338 sc->sc_dev.dv_xname, i); 339 WE_MEM_DISABLE(wsc); 340 return (1); 341 } 342 343 /* 344 * Given a NIC memory source address and a host memory destination address, 345 * copy 'len' from NIC to host using shared memory. The 'len' is rounded 346 * up to a word - ok as long as mbufs are word-sized. 347 */ 348 static __inline void 349 we_readmem(wsc, from, to, len) 350 struct we_softc *wsc; 351 int from; 352 u_int8_t *to; 353 int len; 354 { 355 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 356 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 357 358 if (len & 1) 359 ++len; 360 361 if (wsc->sc_16bitp) 362 bus_space_read_region_stream_2(memt, memh, from, 363 (u_int16_t *)to, len >> 1); 364 else 365 bus_space_read_region_1(memt, memh, from, 366 to, len); 367 } 368 369 static int 370 we_write_mbuf(sc, m, buf) 371 struct dp8390_softc *sc; 372 struct mbuf *m; 373 int buf; 374 { 375 struct we_softc *wsc = (struct we_softc *)sc; 376 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 377 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 378 u_int8_t *data, savebyte[2]; 379 int savelen, len, leftover; 380 #ifdef DIAGNOSTIC 381 u_int8_t *lim; 382 #endif 383 384 savelen = m->m_pkthdr.len; 385 386 WE_MEM_ENABLE(wsc); 387 388 /* 389 * 8-bit boards are simple; no alignment tricks are necessary. 390 */ 391 if (wsc->sc_16bitp == 0) { 392 for (; m != NULL; buf += m->m_len, m = m->m_next) 393 bus_space_write_region_1(memt, memh, 394 buf, mtod(m, u_int8_t *), m->m_len); 395 goto out; 396 } 397 398 /* Start out with no leftover data. */ 399 leftover = 0; 400 savebyte[0] = savebyte[1] = 0; 401 402 for (; m != NULL; m = m->m_next) { 403 len = m->m_len; 404 if (len == 0) 405 continue; 406 data = mtod(m, u_int8_t *); 407 #ifdef DIAGNOSTIC 408 lim = data + len; 409 #endif 410 while (len > 0) { 411 if (leftover) { 412 /* 413 * Data left over (from mbuf or realignment). 414 * Buffer the next byte, and write it and 415 * the leftover data out. 416 */ 417 savebyte[1] = *data++; 418 len--; 419 bus_space_write_stream_2(memt, memh, buf, 420 *(u_int16_t *)savebyte); 421 buf += 2; 422 leftover = 0; 423 } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t) 424 == 0) { 425 /* 426 * Unaligned dta; buffer the next byte. 427 */ 428 savebyte[0] = *data++; 429 len--; 430 leftover = 1; 431 } else { 432 /* 433 * Aligned data; output contiguous words as 434 * much as we can, then buffer the remaining 435 * byte, if any. 436 */ 437 leftover = len & 1; 438 len &= ~1; 439 bus_space_write_region_stream_2(memt, memh, 440 buf, (u_int16_t *)data, len >> 1); 441 data += len; 442 buf += len; 443 if (leftover) 444 savebyte[0] = *data++; 445 len = 0; 446 } 447 } 448 if (len < 0) 449 panic("we_write_mbuf: negative len"); 450 #ifdef DIAGNOSTIC 451 if (data != lim) 452 panic("we_write_mbuf: data != lim"); 453 #endif 454 } 455 if (leftover) { 456 savebyte[1] = 0; 457 bus_space_write_stream_2(memt, memh, buf, 458 *(u_int16_t *)savebyte); 459 } 460 461 out: 462 WE_MEM_DISABLE(wsc); 463 464 return (savelen); 465 } 466 467 static int 468 we_ring_copy(sc, src, dst, amount) 469 struct dp8390_softc *sc; 470 int src; 471 caddr_t dst; 472 u_short amount; 473 { 474 struct we_softc *wsc = (struct we_softc *)sc; 475 u_short tmp_amount; 476 477 /* Does copy wrap to lower addr in ring buffer? */ 478 if (src + amount > sc->mem_end) { 479 tmp_amount = sc->mem_end - src; 480 481 /* Copy amount up to end of NIC memory. */ 482 we_readmem(wsc, src, dst, tmp_amount); 483 484 amount -= tmp_amount; 485 src = sc->mem_ring; 486 dst += tmp_amount; 487 } 488 489 we_readmem(wsc, src, dst, amount); 490 491 return (src + amount); 492 } 493 494 static void 495 we_read_hdr(sc, packet_ptr, packet_hdrp) 496 struct dp8390_softc *sc; 497 int packet_ptr; 498 struct dp8390_ring *packet_hdrp; 499 { 500 struct we_softc *wsc = (struct we_softc *)sc; 501 502 we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp, 503 sizeof(struct dp8390_ring)); 504 #if BYTE_ORDER == BIG_ENDIAN 505 packet_hdrp->count = bswap16(packet_hdrp->count); 506 #endif 507 } 508 509 static void 510 we_recv_int(sc) 511 struct dp8390_softc *sc; 512 { 513 struct we_softc *wsc = (struct we_softc *)sc; 514 515 WE_MEM_ENABLE(wsc); 516 dp8390_rint(sc); 517 WE_MEM_DISABLE(wsc); 518 } 519 520 static void 521 we_media_init(struct dp8390_softc *sc) 522 { 523 struct we_softc *wsc = (void *) sc; 524 int defmedia = IFM_ETHER; 525 u_int8_t x; 526 527 if (sc->is790) { 528 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); 529 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 530 x | WE790_HWR_SWH); 531 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & 532 WE790_GCR_GPOUT) 533 defmedia |= IFM_10_2; 534 else 535 defmedia |= IFM_10_5; 536 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 537 x & ~WE790_HWR_SWH); 538 } else { 539 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 540 if (x & WE_IRR_OUT2) 541 defmedia |= IFM_10_2; 542 else 543 defmedia |= IFM_10_5; 544 } 545 546 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 547 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL); 548 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL); 549 ifmedia_set(&sc->sc_media, defmedia); 550 } 551 552 static int 553 we_mediachange(sc) 554 struct dp8390_softc *sc; 555 { 556 557 /* 558 * Current media is already set up. Just reset the interface 559 * to let the new value take hold. The new media will be 560 * set up in we_init_card() called via dp8390_init(). 561 */ 562 dp8390_reset(sc); 563 return (0); 564 } 565 566 static void 567 we_mediastatus(sc, ifmr) 568 struct dp8390_softc *sc; 569 struct ifmediareq *ifmr; 570 { 571 struct ifmedia *ifm = &sc->sc_media; 572 573 /* 574 * The currently selected media is always the active media. 575 */ 576 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 577 } 578 579 static void 580 we_init_card(sc) 581 struct dp8390_softc *sc; 582 { 583 struct we_softc *wsc = (struct we_softc *)sc; 584 struct ifmedia *ifm = &sc->sc_media; 585 586 if (wsc->sc_init_hook) 587 (*wsc->sc_init_hook)(wsc); 588 589 we_set_media(wsc, ifm->ifm_cur->ifm_media); 590 } 591 592 static void 593 we_set_media(wsc, media) 594 struct we_softc *wsc; 595 int media; 596 { 597 struct dp8390_softc *sc = &wsc->sc_dp8390; 598 bus_space_tag_t asict = wsc->sc_asict; 599 bus_space_handle_t asich = wsc->sc_asich; 600 u_int8_t hwr, gcr, irr; 601 602 if (sc->is790) { 603 hwr = bus_space_read_1(asict, asich, WE790_HWR); 604 bus_space_write_1(asict, asich, WE790_HWR, 605 hwr | WE790_HWR_SWH); 606 gcr = bus_space_read_1(asict, asich, WE790_GCR); 607 if (IFM_SUBTYPE(media) == IFM_10_2) 608 gcr |= WE790_GCR_GPOUT; 609 else 610 gcr &= ~WE790_GCR_GPOUT; 611 bus_space_write_1(asict, asich, WE790_GCR, 612 gcr | WE790_GCR_LIT); 613 bus_space_write_1(asict, asich, WE790_HWR, 614 hwr & ~WE790_HWR_SWH); 615 return; 616 } 617 618 irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 619 if (IFM_SUBTYPE(media) == IFM_10_2) 620 irr |= WE_IRR_OUT2; 621 else 622 irr &= ~WE_IRR_OUT2; 623 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); 624 } 625
Indexes created Wed Oct 15 16:09:53 GMT 2025