Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/ic/we.c
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1 /* $NetBSD: we.c,v 1.5 2003/01/15 22:20:07 bouyer 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 1.5 2003/01/15 22:20:07 bouyer 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 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 376 bus_space_set_region_1(memt, memh, 377 buf, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - savelen); 378 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 379 } 380 goto out; 381 } 382 383 /* Start out with no leftover data. */ 384 leftover = 0; 385 savebyte[0] = savebyte[1] = 0; 386 387 for (; m != NULL; m = m->m_next) { 388 len = m->m_len; 389 if (len == 0) 390 continue; 391 data = mtod(m, u_int8_t *); 392 #ifdef DIAGNOSTIC 393 lim = data + len; 394 #endif 395 while (len > 0) { 396 if (leftover) { 397 /* 398 * Data left over (from mbuf or realignment). 399 * Buffer the next byte, and write it and 400 * the leftover data out. 401 */ 402 savebyte[1] = *data++; 403 len--; 404 bus_space_write_stream_2(memt, memh, buf, 405 *(u_int16_t *)savebyte); 406 buf += 2; 407 leftover = 0; 408 } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t) 409 == 0) { 410 /* 411 * Unaligned dta; buffer the next byte. 412 */ 413 savebyte[0] = *data++; 414 len--; 415 leftover = 1; 416 } else { 417 /* 418 * Aligned data; output contiguous words as 419 * much as we can, then buffer the remaining 420 * byte, if any. 421 */ 422 leftover = len & 1; 423 len &= ~1; 424 bus_space_write_region_stream_2(memt, memh, 425 buf, (u_int16_t *)data, len >> 1); 426 data += len; 427 buf += len; 428 if (leftover) 429 savebyte[0] = *data++; 430 len = 0; 431 } 432 } 433 if (len < 0) 434 panic("we_write_mbuf: negative len"); 435 #ifdef DIAGNOSTIC 436 if (data != lim) 437 panic("we_write_mbuf: data != lim"); 438 #endif 439 } 440 if (leftover) { 441 savebyte[1] = 0; 442 bus_space_write_stream_2(memt, memh, buf, 443 *(u_int16_t *)savebyte); 444 buf += 2; 445 } 446 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 447 bus_space_set_region_2(memt, memh, 448 buf, 0, (ETHER_MIN_LEN - ETHER_CRC_LEN - savelen) >> 1); 449 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 450 } 451 452 out: 453 WE_MEM_DISABLE(wsc); 454 455 return (savelen); 456 } 457 458 static int 459 we_ring_copy(sc, src, dst, amount) 460 struct dp8390_softc *sc; 461 int src; 462 caddr_t dst; 463 u_short amount; 464 { 465 struct we_softc *wsc = (struct we_softc *)sc; 466 u_short tmp_amount; 467 468 /* Does copy wrap to lower addr in ring buffer? */ 469 if (src + amount > sc->mem_end) { 470 tmp_amount = sc->mem_end - src; 471 472 /* Copy amount up to end of NIC memory. */ 473 we_readmem(wsc, src, dst, tmp_amount); 474 475 amount -= tmp_amount; 476 src = sc->mem_ring; 477 dst += tmp_amount; 478 } 479 480 we_readmem(wsc, src, dst, amount); 481 482 return (src + amount); 483 } 484 485 static void 486 we_read_hdr(sc, packet_ptr, packet_hdrp) 487 struct dp8390_softc *sc; 488 int packet_ptr; 489 struct dp8390_ring *packet_hdrp; 490 { 491 struct we_softc *wsc = (struct we_softc *)sc; 492 493 we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp, 494 sizeof(struct dp8390_ring)); 495 #if BYTE_ORDER == BIG_ENDIAN 496 packet_hdrp->count = bswap16(packet_hdrp->count); 497 #endif 498 } 499 500 static void 501 we_recv_int(sc) 502 struct dp8390_softc *sc; 503 { 504 struct we_softc *wsc = (struct we_softc *)sc; 505 506 WE_MEM_ENABLE(wsc); 507 dp8390_rint(sc); 508 WE_MEM_DISABLE(wsc); 509 } 510 511 static void 512 we_media_init(struct dp8390_softc *sc) 513 { 514 struct we_softc *wsc = (void *) sc; 515 int defmedia = IFM_ETHER; 516 u_int8_t x; 517 518 if (sc->is790) { 519 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); 520 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 521 x | WE790_HWR_SWH); 522 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & 523 WE790_GCR_GPOUT) 524 defmedia |= IFM_10_2; 525 else 526 defmedia |= IFM_10_5; 527 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 528 x & ~WE790_HWR_SWH); 529 } else { 530 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 531 if (x & WE_IRR_OUT2) 532 defmedia |= IFM_10_2; 533 else 534 defmedia |= IFM_10_5; 535 } 536 537 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 538 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL); 539 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL); 540 ifmedia_set(&sc->sc_media, defmedia); 541 } 542 543 static int 544 we_mediachange(sc) 545 struct dp8390_softc *sc; 546 { 547 548 /* 549 * Current media is already set up. Just reset the interface 550 * to let the new value take hold. The new media will be 551 * set up in we_init_card() called via dp8390_init(). 552 */ 553 dp8390_reset(sc); 554 return (0); 555 } 556 557 static void 558 we_mediastatus(sc, ifmr) 559 struct dp8390_softc *sc; 560 struct ifmediareq *ifmr; 561 { 562 struct ifmedia *ifm = &sc->sc_media; 563 564 /* 565 * The currently selected media is always the active media. 566 */ 567 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 568 } 569 570 static void 571 we_init_card(sc) 572 struct dp8390_softc *sc; 573 { 574 struct we_softc *wsc = (struct we_softc *)sc; 575 struct ifmedia *ifm = &sc->sc_media; 576 577 if (wsc->sc_init_hook) 578 (*wsc->sc_init_hook)(wsc); 579 580 we_set_media(wsc, ifm->ifm_cur->ifm_media); 581 } 582 583 static void 584 we_set_media(wsc, media) 585 struct we_softc *wsc; 586 int media; 587 { 588 struct dp8390_softc *sc = &wsc->sc_dp8390; 589 bus_space_tag_t asict = wsc->sc_asict; 590 bus_space_handle_t asich = wsc->sc_asich; 591 u_int8_t hwr, gcr, irr; 592 593 if (sc->is790) { 594 hwr = bus_space_read_1(asict, asich, WE790_HWR); 595 bus_space_write_1(asict, asich, WE790_HWR, 596 hwr | WE790_HWR_SWH); 597 gcr = bus_space_read_1(asict, asich, WE790_GCR); 598 if (IFM_SUBTYPE(media) == IFM_10_2) 599 gcr |= WE790_GCR_GPOUT; 600 else 601 gcr &= ~WE790_GCR_GPOUT; 602 bus_space_write_1(asict, asich, WE790_GCR, 603 gcr | WE790_GCR_LIT); 604 bus_space_write_1(asict, asich, WE790_HWR, 605 hwr & ~WE790_HWR_SWH); 606 return; 607 } 608 609 irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 610 if (IFM_SUBTYPE(media) == IFM_10_2) 611 irr |= WE_IRR_OUT2; 612 else 613 irr &= ~WE_IRR_OUT2; 614 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); 615 }
Cache object: d8ffd16788bfe09357c83ad7974b6219
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