we.c revision 1.3.2.1
1 /* $NetBSD: we.c,v 1.3.2.1 2002/01/10 19:55:10 thorpej 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/cdefs.h> 59 __KERNEL_RCSID(0, "$NetBSD: we.c,v 1.3.2.1 2002/01/10 19:55:10 thorpej Exp $"); 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/device.h> 64 #include <sys/socket.h> 65 #include <sys/mbuf.h> 66 #include <sys/syslog.h> 67 68 #include <net/if.h> 69 #include <net/if_dl.h> 70 #include <net/if_types.h> 71 #include <net/if_media.h> 72 73 #include <net/if_ether.h> 74 75 #include <machine/bus.h> 76 #include <machine/bswap.h> 77 #include <machine/intr.h> 78 79 #include <dev/isa/isareg.h> 80 #include <dev/isa/isavar.h> 81 82 #include <dev/ic/dp8390reg.h> 83 #include <dev/ic/dp8390var.h> 84 #include <dev/ic/wereg.h> 85 #include <dev/ic/wevar.h> 86 87 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 88 #define bus_space_read_region_stream_2 bus_space_read_region_2 89 #define bus_space_write_stream_2 bus_space_write_2 90 #define bus_space_write_region_stream_2 bus_space_write_region_2 91 #endif 92 93 static void we_set_media __P((struct we_softc *, int)); 94 95 static void we_media_init __P((struct dp8390_softc *)); 96 97 static int we_mediachange __P((struct dp8390_softc *)); 98 static void we_mediastatus __P((struct dp8390_softc *, struct ifmediareq *)); 99 100 static void we_recv_int __P((struct dp8390_softc *)); 101 static void we_init_card __P((struct dp8390_softc *)); 102 static int we_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int)); 103 static int we_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short)); 104 static void we_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *)); 105 static int we_test_mem __P((struct dp8390_softc *)); 106 107 static __inline void we_readmem __P((struct we_softc *, int, u_int8_t *, int)); 108 109 /* 110 * Delay needed when switching 16-bit access to shared memory. 111 */ 112 #define WE_DELAY(wsc) delay(3) 113 114 /* 115 * Enable card RAM, and 16-bit access. 116 */ 117 #define WE_MEM_ENABLE(wsc) \ 118 do { \ 119 if ((wsc)->sc_16bitp) \ 120 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 121 WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \ 122 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 123 WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \ 124 WE_DELAY((wsc)); \ 125 } while (0) 126 127 /* 128 * Disable card RAM, and 16-bit access. 129 */ 130 #define WE_MEM_DISABLE(wsc) \ 131 do { \ 132 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 133 WE_MSR, (wsc)->sc_msr_proto); \ 134 if ((wsc)->sc_16bitp) \ 135 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 136 WE_LAAR, (wsc)->sc_laar_proto); \ 137 WE_DELAY((wsc)); \ 138 } while (0) 139 140 int 141 we_config(self, wsc, typestr) 142 struct device *self; 143 struct we_softc *wsc; 144 const char *typestr; 145 { 146 struct dp8390_softc *sc = &wsc->sc_dp8390; 147 u_int8_t x; 148 int i, forced_16bit = 0; 149 150 /* 151 * Allow user to override 16-bit mode. 8-bit takes precedence. 152 */ 153 if (self->dv_cfdata->cf_flags & DP8390_FORCE_16BIT_MODE) { 154 wsc->sc_16bitp = 1; 155 forced_16bit = 1; 156 } 157 if (self->dv_cfdata->cf_flags & DP8390_FORCE_8BIT_MODE) 158 wsc->sc_16bitp = 0; 159 160 /* Registers are linear. */ 161 for (i = 0; i < 16; i++) 162 sc->sc_reg_map[i] = i; 163 164 /* Now we can use the NIC_{GET,PUT}() macros. */ 165 166 printf("%s: %s Ethernet (%s-bit)\n", sc->sc_dev.dv_xname, 167 typestr, wsc->sc_16bitp ? "16" : "8"); 168 169 /* Get station address from EEPROM. */ 170 for (i = 0; i < ETHER_ADDR_LEN; i++) 171 sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict, 172 wsc->sc_asich, WE_PROM + i); 173 174 /* 175 * Set upper address bits and 8/16 bit access to shared memory. 176 */ 177 if (sc->is790) { 178 wsc->sc_laar_proto = 179 bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) & 180 ~WE_LAAR_M16EN; 181 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 182 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 183 } else if ((wsc->sc_type & WE_SOFTCONFIG) || 184 #ifdef TOSH_ETHER 185 (wsc->sc_type == WE_TYPE_TOSHIBA1) || 186 (wsc->sc_type == WE_TYPE_TOSHIBA4) || 187 #endif 188 (forced_16bit) || 189 (wsc->sc_type == WE_TYPE_WD8013EBT)) { 190 wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI; 191 if (wsc->sc_16bitp) 192 wsc->sc_laar_proto |= WE_LAAR_L16EN; 193 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 194 wsc->sc_laar_proto | (wsc->sc_16bitp ? WE_LAAR_M16EN : 0)); 195 } 196 197 /* 198 * Set address and enable interface shared memory. 199 */ 200 if (sc->is790) { 201 /* XXX MAGIC CONSTANTS XXX */ 202 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x04); 203 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x | 0x80); 204 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x0b, 205 ((wsc->sc_maddr >> 13) & 0x0f) | 206 ((wsc->sc_maddr >> 11) & 0x40) | 207 (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x0b) & 0xb0)); 208 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x); 209 wsc->sc_msr_proto = 0x00; 210 sc->cr_proto = 0x00; 211 } else { 212 #ifdef TOSH_ETHER 213 if (wsc->sc_type == WE_TYPE_TOSHIBA1 || 214 wsc->sc_type == WE_TYPE_TOSHIBA4) { 215 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 216 WE_MSR + 1, 217 ((wsc->sc_maddr >> 8) & 0xe0) | 0x04); 218 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 219 WE_MSR + 2, 220 ((wsc->sc_maddr >> 16) & 0x0f)); 221 wsc->sc_msr_proto = WE_MSR_POW; 222 } else 223 #endif 224 wsc->sc_msr_proto = (wsc->sc_maddr >> 13) & 225 WE_MSR_ADDR; 226 227 sc->cr_proto = ED_CR_RD2; 228 } 229 230 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR, 231 wsc->sc_msr_proto | WE_MSR_MENB); 232 WE_DELAY(wsc); 233 234 /* 235 * DCR gets: 236 * 237 * FIFO threshold to 8, No auto-init Remote DMA, 238 * byte order=80x86. 239 * 240 * 16-bit cards also get word-wide DMA transfers. 241 */ 242 sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 243 (wsc->sc_16bitp ? ED_DCR_WTS : 0); 244 245 sc->test_mem = we_test_mem; 246 sc->ring_copy = we_ring_copy; 247 sc->write_mbuf = we_write_mbuf; 248 sc->read_hdr = we_read_hdr; 249 sc->recv_int = we_recv_int; 250 sc->init_card = we_init_card; 251 252 sc->sc_mediachange = we_mediachange; 253 sc->sc_mediastatus = we_mediastatus; 254 255 sc->mem_start = 0; 256 /* sc->mem_size has to be set by frontend */ 257 258 sc->sc_flags = self->dv_cfdata->cf_flags; 259 260 /* Do generic parts of attach. */ 261 if (wsc->sc_type & WE_SOFTCONFIG) 262 sc->sc_media_init = we_media_init; 263 else 264 sc->sc_media_init = dp8390_media_init; 265 if (dp8390_config(sc)) { 266 printf("%s: configuration failed\n", sc->sc_dev.dv_xname); 267 return (1); 268 } 269 270 /* 271 * Disable 16-bit access to shared memory - we leave it disabled 272 * so that: 273 * 274 * (1) machines reboot properly when the board is set to 275 * 16-bit mode and there are conflicting 8-bit devices 276 * within the same 128k address space as this board's 277 * shared memory, and 278 * 279 * (2) so that other 8-bit devices with shared memory 280 * in this same 128k address space will work. 281 */ 282 WE_MEM_DISABLE(wsc); 283 284 return (0); 285 } 286 287 static int 288 we_test_mem(sc) 289 struct dp8390_softc *sc; 290 { 291 struct we_softc *wsc = (struct we_softc *)sc; 292 bus_space_tag_t memt = sc->sc_buft; 293 bus_space_handle_t memh = sc->sc_bufh; 294 bus_size_t memsize = sc->mem_size; 295 int i; 296 297 if (wsc->sc_16bitp) 298 bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1); 299 else 300 bus_space_set_region_1(memt, memh, 0, 0, memsize); 301 302 if (wsc->sc_16bitp) { 303 for (i = 0; i < memsize; i += 2) { 304 if (bus_space_read_2(memt, memh, i) != 0) 305 goto fail; 306 } 307 } else { 308 for (i = 0; i < memsize; i++) { 309 if (bus_space_read_1(memt, memh, i) != 0) 310 goto fail; 311 } 312 } 313 314 return (0); 315 316 fail: 317 printf("%s: failed to clear shared memory at offset 0x%x\n", 318 sc->sc_dev.dv_xname, i); 319 WE_MEM_DISABLE(wsc); 320 return (1); 321 } 322 323 /* 324 * Given a NIC memory source address and a host memory destination address, 325 * copy 'len' from NIC to host using shared memory. The 'len' is rounded 326 * up to a word - ok as long as mbufs are word-sized. 327 */ 328 static __inline void 329 we_readmem(wsc, from, to, len) 330 struct we_softc *wsc; 331 int from; 332 u_int8_t *to; 333 int len; 334 { 335 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 336 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 337 338 if (len & 1) 339 ++len; 340 341 if (wsc->sc_16bitp) 342 bus_space_read_region_stream_2(memt, memh, from, 343 (u_int16_t *)to, len >> 1); 344 else 345 bus_space_read_region_1(memt, memh, from, 346 to, len); 347 } 348 349 static int 350 we_write_mbuf(sc, m, buf) 351 struct dp8390_softc *sc; 352 struct mbuf *m; 353 int buf; 354 { 355 struct we_softc *wsc = (struct we_softc *)sc; 356 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 357 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 358 u_int8_t *data, savebyte[2]; 359 int savelen, len, leftover; 360 #ifdef DIAGNOSTIC 361 u_int8_t *lim; 362 #endif 363 364 savelen = m->m_pkthdr.len; 365 366 WE_MEM_ENABLE(wsc); 367 368 /* 369 * 8-bit boards are simple; no alignment tricks are necessary. 370 */ 371 if (wsc->sc_16bitp == 0) { 372 for (; m != NULL; buf += m->m_len, m = m->m_next) 373 bus_space_write_region_1(memt, memh, 374 buf, mtod(m, u_int8_t *), m->m_len); 375 goto out; 376 } 377 378 /* Start out with no leftover data. */ 379 leftover = 0; 380 savebyte[0] = savebyte[1] = 0; 381 382 for (; m != NULL; m = m->m_next) { 383 len = m->m_len; 384 if (len == 0) 385 continue; 386 data = mtod(m, u_int8_t *); 387 #ifdef DIAGNOSTIC 388 lim = data + len; 389 #endif 390 while (len > 0) { 391 if (leftover) { 392 /* 393 * Data left over (from mbuf or realignment). 394 * Buffer the next byte, and write it and 395 * the leftover data out. 396 */ 397 savebyte[1] = *data++; 398 len--; 399 bus_space_write_stream_2(memt, memh, buf, 400 *(u_int16_t *)savebyte); 401 buf += 2; 402 leftover = 0; 403 } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t) 404 == 0) { 405 /* 406 * Unaligned dta; buffer the next byte. 407 */ 408 savebyte[0] = *data++; 409 len--; 410 leftover = 1; 411 } else { 412 /* 413 * Aligned data; output contiguous words as 414 * much as we can, then buffer the remaining 415 * byte, if any. 416 */ 417 leftover = len & 1; 418 len &= ~1; 419 bus_space_write_region_stream_2(memt, memh, 420 buf, (u_int16_t *)data, len >> 1); 421 data += len; 422 buf += len; 423 if (leftover) 424 savebyte[0] = *data++; 425 len = 0; 426 } 427 } 428 if (len < 0) 429 panic("we_write_mbuf: negative len"); 430 #ifdef DIAGNOSTIC 431 if (data != lim) 432 panic("we_write_mbuf: data != lim"); 433 #endif 434 } 435 if (leftover) { 436 savebyte[1] = 0; 437 bus_space_write_stream_2(memt, memh, buf, 438 *(u_int16_t *)savebyte); 439 } 440 441 out: 442 WE_MEM_DISABLE(wsc); 443 444 return (savelen); 445 } 446 447 static int 448 we_ring_copy(sc, src, dst, amount) 449 struct dp8390_softc *sc; 450 int src; 451 caddr_t dst; 452 u_short amount; 453 { 454 struct we_softc *wsc = (struct we_softc *)sc; 455 u_short tmp_amount; 456 457 /* Does copy wrap to lower addr in ring buffer? */ 458 if (src + amount > sc->mem_end) { 459 tmp_amount = sc->mem_end - src; 460 461 /* Copy amount up to end of NIC memory. */ 462 we_readmem(wsc, src, dst, tmp_amount); 463 464 amount -= tmp_amount; 465 src = sc->mem_ring; 466 dst += tmp_amount; 467 } 468 469 we_readmem(wsc, src, dst, amount); 470 471 return (src + amount); 472 } 473 474 static void 475 we_read_hdr(sc, packet_ptr, packet_hdrp) 476 struct dp8390_softc *sc; 477 int packet_ptr; 478 struct dp8390_ring *packet_hdrp; 479 { 480 struct we_softc *wsc = (struct we_softc *)sc; 481 482 we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp, 483 sizeof(struct dp8390_ring)); 484 #if BYTE_ORDER == BIG_ENDIAN 485 packet_hdrp->count = bswap16(packet_hdrp->count); 486 #endif 487 } 488 489 static void 490 we_recv_int(sc) 491 struct dp8390_softc *sc; 492 { 493 struct we_softc *wsc = (struct we_softc *)sc; 494 495 WE_MEM_ENABLE(wsc); 496 dp8390_rint(sc); 497 WE_MEM_DISABLE(wsc); 498 } 499 500 static void 501 we_media_init(struct dp8390_softc *sc) 502 { 503 struct we_softc *wsc = (void *) sc; 504 int defmedia = IFM_ETHER; 505 u_int8_t x; 506 507 if (sc->is790) { 508 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); 509 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 510 x | WE790_HWR_SWH); 511 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & 512 WE790_GCR_GPOUT) 513 defmedia |= IFM_10_2; 514 else 515 defmedia |= IFM_10_5; 516 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 517 x & ~WE790_HWR_SWH); 518 } else { 519 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 520 if (x & WE_IRR_OUT2) 521 defmedia |= IFM_10_2; 522 else 523 defmedia |= IFM_10_5; 524 } 525 526 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 527 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL); 528 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL); 529 ifmedia_set(&sc->sc_media, defmedia); 530 } 531 532 static int 533 we_mediachange(sc) 534 struct dp8390_softc *sc; 535 { 536 537 /* 538 * Current media is already set up. Just reset the interface 539 * to let the new value take hold. The new media will be 540 * set up in we_init_card() called via dp8390_init(). 541 */ 542 dp8390_reset(sc); 543 return (0); 544 } 545 546 static void 547 we_mediastatus(sc, ifmr) 548 struct dp8390_softc *sc; 549 struct ifmediareq *ifmr; 550 { 551 struct ifmedia *ifm = &sc->sc_media; 552 553 /* 554 * The currently selected media is always the active media. 555 */ 556 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 557 } 558 559 static void 560 we_init_card(sc) 561 struct dp8390_softc *sc; 562 { 563 struct we_softc *wsc = (struct we_softc *)sc; 564 struct ifmedia *ifm = &sc->sc_media; 565 566 if (wsc->sc_init_hook) 567 (*wsc->sc_init_hook)(wsc); 568 569 we_set_media(wsc, ifm->ifm_cur->ifm_media); 570 } 571 572 static void 573 we_set_media(wsc, media) 574 struct we_softc *wsc; 575 int media; 576 { 577 struct dp8390_softc *sc = &wsc->sc_dp8390; 578 bus_space_tag_t asict = wsc->sc_asict; 579 bus_space_handle_t asich = wsc->sc_asich; 580 u_int8_t hwr, gcr, irr; 581 582 if (sc->is790) { 583 hwr = bus_space_read_1(asict, asich, WE790_HWR); 584 bus_space_write_1(asict, asich, WE790_HWR, 585 hwr | WE790_HWR_SWH); 586 gcr = bus_space_read_1(asict, asich, WE790_GCR); 587 if (IFM_SUBTYPE(media) == IFM_10_2) 588 gcr |= WE790_GCR_GPOUT; 589 else 590 gcr &= ~WE790_GCR_GPOUT; 591 bus_space_write_1(asict, asich, WE790_GCR, 592 gcr | WE790_GCR_LIT); 593 bus_space_write_1(asict, asich, WE790_HWR, 594 hwr & ~WE790_HWR_SWH); 595 return; 596 } 597 598 irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 599 if (IFM_SUBTYPE(media) == IFM_10_2) 600 irr |= WE_IRR_OUT2; 601 else 602 irr &= ~WE_IRR_OUT2; 603 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); 604 } 605
Indexes created Tue Oct 14 01:09:49 GMT 2025