we.c revision 1.14.4.1
1 /* $NetBSD: we.c,v 1.14.4.1 2008/05/16 02:24:06 yamt 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet 35 * adapters. 36 * 37 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. 38 * 39 * Copyright (C) 1993, David Greenman. This software may be used, modified, 40 * copied, distributed, and sold, in both source and binary form provided that 41 * the above copyright and these terms are retained. Under no circumstances is 42 * the author responsible for the proper functioning of this software, nor does 43 * the author assume any responsibility for damages incurred with its use. 44 */ 45 46 /* 47 * Device driver for the Western Digital/SMC 8003 and 8013 series, 48 * and the SMC Elite Ultra (8216). 49 */ 50 51 #include <sys/cdefs.h> 52 __KERNEL_RCSID(0, "$NetBSD: we.c,v 1.14.4.1 2008/05/16 02:24:06 yamt Exp $"); 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/device.h> 57 #include <sys/socket.h> 58 #include <sys/mbuf.h> 59 #include <sys/syslog.h> 60 61 #include <net/if.h> 62 #include <net/if_dl.h> 63 #include <net/if_types.h> 64 #include <net/if_media.h> 65 66 #include <net/if_ether.h> 67 68 #include <sys/bus.h> 69 #include <sys/bswap.h> 70 #include <sys/intr.h> 71 72 #include <dev/isa/isareg.h> 73 #include <dev/isa/isavar.h> 74 75 #include <dev/ic/dp8390reg.h> 76 #include <dev/ic/dp8390var.h> 77 #include <dev/ic/wereg.h> 78 #include <dev/ic/wevar.h> 79 80 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 81 #define bus_space_read_region_stream_2 bus_space_read_region_2 82 #define bus_space_write_stream_2 bus_space_write_2 83 #define bus_space_write_region_stream_2 bus_space_write_region_2 84 #endif 85 86 static void we_set_media(struct we_softc *, int); 87 88 static void we_media_init(struct dp8390_softc *); 89 90 static int we_mediachange(struct dp8390_softc *); 91 static void we_mediastatus(struct dp8390_softc *, struct ifmediareq *); 92 93 static void we_recv_int(struct dp8390_softc *); 94 static void we_init_card(struct dp8390_softc *); 95 static int we_write_mbuf(struct dp8390_softc *, struct mbuf *, int); 96 static int we_ring_copy(struct dp8390_softc *, int, void *, u_short); 97 static void we_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); 98 static int we_test_mem(struct dp8390_softc *); 99 100 static inline void we_readmem(struct we_softc *, int, u_int8_t *, int); 101 102 /* 103 * Delay needed when switching 16-bit access to shared memory. 104 */ 105 #define WE_DELAY(wsc) delay(3) 106 107 /* 108 * Enable card RAM, and 16-bit access. 109 */ 110 #define WE_MEM_ENABLE(wsc) \ 111 if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \ 112 if ((wsc)->sc_flags & WE_16BIT_ENABLE) \ 113 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 114 WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \ 115 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 116 WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \ 117 WE_DELAY((wsc)); \ 118 } 119 120 /* 121 * Disable card RAM, and 16-bit access. 122 */ 123 #define WE_MEM_DISABLE(wsc) \ 124 if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \ 125 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 126 WE_MSR, (wsc)->sc_msr_proto); \ 127 if ((wsc)->sc_flags & WE_16BIT_ENABLE) \ 128 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \ 129 WE_LAAR, (wsc)->sc_laar_proto); \ 130 WE_DELAY((wsc)); \ 131 } 132 133 int 134 we_config(device_t self, struct we_softc *wsc, const char *typestr) 135 { 136 struct dp8390_softc *sc = &wsc->sc_dp8390; 137 u_int8_t x; 138 int i, forced_16bit = 0; 139 140 /* 141 * Allow user to override 16-bit mode. 8-bit takes precedence. 142 */ 143 if (device_cfdata(self)->cf_flags & DP8390_FORCE_16BIT_MODE) { 144 wsc->sc_flags |= WE_16BIT_ENABLE; 145 forced_16bit = 1; 146 } 147 if (device_cfdata(self)->cf_flags & DP8390_FORCE_8BIT_MODE) 148 wsc->sc_flags &= ~WE_16BIT_ENABLE; 149 150 /* Registers are linear. */ 151 for (i = 0; i < 16; i++) 152 sc->sc_reg_map[i] = i; 153 154 /* Now we can use the NIC_{GET,PUT}() macros. */ 155 156 aprint_normal_dev(self, "%s Ethernet (%s-bit)\n", 157 typestr, wsc->sc_flags & WE_16BIT_ENABLE ? "16" : "8"); 158 159 /* Get station address from EEPROM. */ 160 for (i = 0; i < ETHER_ADDR_LEN; i++) 161 sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict, 162 wsc->sc_asich, WE_PROM + i); 163 164 /* 165 * Set upper address bits and 8/16 bit access to shared memory. 166 */ 167 if (sc->is790) { 168 wsc->sc_laar_proto = 169 bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) & 170 ~WE_LAAR_M16EN; 171 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 172 wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0)); 173 } else if ((wsc->sc_type & WE_SOFTCONFIG) || 174 #ifdef TOSH_ETHER 175 (wsc->sc_type == WE_TYPE_TOSHIBA1) || 176 (wsc->sc_type == WE_TYPE_TOSHIBA4) || 177 #endif 178 (forced_16bit) || 179 (wsc->sc_type == WE_TYPE_WD8013EBT)) { 180 wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI; 181 if (wsc->sc_flags & WE_16BIT_ENABLE) 182 wsc->sc_laar_proto |= WE_LAAR_L16EN; 183 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR, 184 wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0)); 185 } 186 187 /* 188 * Set address and enable interface shared memory. 189 */ 190 if (sc->is790) { 191 /* XXX MAGIC CONSTANTS XXX */ 192 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x04); 193 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x | 0x80); 194 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x0b, 195 ((wsc->sc_maddr >> 13) & 0x0f) | 196 ((wsc->sc_maddr >> 11) & 0x40) | 197 (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x0b) & 0xb0)); 198 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x); 199 wsc->sc_msr_proto = 0x00; 200 sc->cr_proto = 0x00; 201 } else { 202 #ifdef TOSH_ETHER 203 if (wsc->sc_type == WE_TYPE_TOSHIBA1 || 204 wsc->sc_type == WE_TYPE_TOSHIBA4) { 205 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 206 WE_MSR + 1, 207 ((wsc->sc_maddr >> 8) & 0xe0) | 0x04); 208 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 209 WE_MSR + 2, 210 ((wsc->sc_maddr >> 16) & 0x0f)); 211 wsc->sc_msr_proto = WE_MSR_POW; 212 } else 213 #endif 214 wsc->sc_msr_proto = (wsc->sc_maddr >> 13) & 215 WE_MSR_ADDR; 216 217 sc->cr_proto = ED_CR_RD2; 218 } 219 220 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR, 221 wsc->sc_msr_proto | WE_MSR_MENB); 222 WE_DELAY(wsc); 223 224 /* 225 * DCR gets: 226 * 227 * FIFO threshold to 8, No auto-init Remote DMA, 228 * byte order=80x86. 229 * 230 * 16-bit cards also get word-wide DMA transfers. 231 */ 232 sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 233 (wsc->sc_flags & WE_16BIT_ENABLE ? ED_DCR_WTS : 0); 234 235 sc->test_mem = we_test_mem; 236 sc->ring_copy = we_ring_copy; 237 sc->write_mbuf = we_write_mbuf; 238 sc->read_hdr = we_read_hdr; 239 sc->recv_int = we_recv_int; 240 sc->init_card = we_init_card; 241 242 sc->sc_mediachange = we_mediachange; 243 sc->sc_mediastatus = we_mediastatus; 244 245 sc->mem_start = 0; 246 /* sc->mem_size has to be set by frontend */ 247 248 sc->sc_flags = device_cfdata(self)->cf_flags; 249 250 /* Do generic parts of attach. */ 251 if (wsc->sc_type & WE_SOFTCONFIG) 252 sc->sc_media_init = we_media_init; 253 else 254 sc->sc_media_init = dp8390_media_init; 255 if (dp8390_config(sc)) { 256 aprint_error_dev(self, "configuration failed\n"); 257 return (1); 258 } 259 260 /* 261 * Disable 16-bit access to shared memory - we leave it disabled 262 * so that: 263 * 264 * (1) machines reboot properly when the board is set to 265 * 16-bit mode and there are conflicting 8-bit devices 266 * within the same 128k address space as this board's 267 * shared memory, and 268 * 269 * (2) so that other 8-bit devices with shared memory 270 * in this same 128k address space will work. 271 */ 272 WE_MEM_DISABLE(wsc); 273 274 return (0); 275 } 276 277 static int 278 we_test_mem(struct dp8390_softc *sc) 279 { 280 struct we_softc *wsc = (struct we_softc *)sc; 281 bus_space_tag_t memt = sc->sc_buft; 282 bus_space_handle_t memh = sc->sc_bufh; 283 bus_size_t memsize = sc->mem_size; 284 int i; 285 286 if (wsc->sc_flags & WE_16BIT_ENABLE) 287 bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1); 288 else 289 bus_space_set_region_1(memt, memh, 0, 0, memsize); 290 291 if (wsc->sc_flags & WE_16BIT_ENABLE) { 292 for (i = 0; i < memsize; i += 2) { 293 if (bus_space_read_2(memt, memh, i) != 0) 294 goto fail; 295 } 296 } else { 297 for (i = 0; i < memsize; i++) { 298 if (bus_space_read_1(memt, memh, i) != 0) 299 goto fail; 300 } 301 } 302 303 return (0); 304 305 fail: 306 aprint_error_dev(sc->sc_dev, 307 "failed to clear shared memory at offset 0x%x\n", i); 308 WE_MEM_DISABLE(wsc); 309 return (1); 310 } 311 312 /* 313 * Given a NIC memory source address and a host memory destination address, 314 * copy 'len' from NIC to host using shared memory. The 'len' is rounded 315 * up to a word - ok as long as mbufs are word-sized. 316 */ 317 static inline void 318 we_readmem(struct we_softc *wsc, int from, u_int8_t *to, int len) 319 { 320 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 321 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 322 323 if (len & 1) 324 ++len; 325 326 if (wsc->sc_flags & WE_16BIT_ENABLE) 327 bus_space_read_region_stream_2(memt, memh, from, 328 (u_int16_t *)to, len >> 1); 329 else 330 bus_space_read_region_1(memt, memh, from, 331 to, len); 332 } 333 334 static int 335 we_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) 336 { 337 struct we_softc *wsc = (struct we_softc *)sc; 338 bus_space_tag_t memt = wsc->sc_dp8390.sc_buft; 339 bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh; 340 u_int8_t *data, savebyte[2]; 341 int savelen, len, leftover; 342 #ifdef DIAGNOSTIC 343 u_int8_t *lim; 344 #endif 345 346 savelen = m->m_pkthdr.len; 347 348 WE_MEM_ENABLE(wsc); 349 350 /* 351 * 8-bit boards are simple; no alignment tricks are necessary. 352 */ 353 if ((wsc->sc_flags & WE_16BIT_ENABLE) == 0) { 354 for (; m != NULL; buf += m->m_len, m = m->m_next) 355 bus_space_write_region_1(memt, memh, 356 buf, mtod(m, u_int8_t *), m->m_len); 357 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 358 bus_space_set_region_1(memt, memh, 359 buf, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - savelen); 360 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 361 } 362 goto out; 363 } 364 365 /* Start out with no leftover data. */ 366 leftover = 0; 367 savebyte[0] = savebyte[1] = 0; 368 369 for (; m != NULL; m = m->m_next) { 370 len = m->m_len; 371 if (len == 0) 372 continue; 373 data = mtod(m, u_int8_t *); 374 #ifdef DIAGNOSTIC 375 lim = data + len; 376 #endif 377 while (len > 0) { 378 if (leftover) { 379 /* 380 * Data left over (from mbuf or realignment). 381 * Buffer the next byte, and write it and 382 * the leftover data out. 383 */ 384 savebyte[1] = *data++; 385 len--; 386 bus_space_write_stream_2(memt, memh, buf, 387 *(u_int16_t *)savebyte); 388 buf += 2; 389 leftover = 0; 390 } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t) 391 == 0) { 392 /* 393 * Unaligned dta; buffer the next byte. 394 */ 395 savebyte[0] = *data++; 396 len--; 397 leftover = 1; 398 } else { 399 /* 400 * Aligned data; output contiguous words as 401 * much as we can, then buffer the remaining 402 * byte, if any. 403 */ 404 leftover = len & 1; 405 len &= ~1; 406 bus_space_write_region_stream_2(memt, memh, 407 buf, (u_int16_t *)data, len >> 1); 408 data += len; 409 buf += len; 410 if (leftover) 411 savebyte[0] = *data++; 412 len = 0; 413 } 414 } 415 if (len < 0) 416 panic("we_write_mbuf: negative len"); 417 #ifdef DIAGNOSTIC 418 if (data != lim) 419 panic("we_write_mbuf: data != lim"); 420 #endif 421 } 422 if (leftover) { 423 savebyte[1] = 0; 424 bus_space_write_stream_2(memt, memh, buf, 425 *(u_int16_t *)savebyte); 426 buf += 2; 427 } 428 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 429 bus_space_set_region_2(memt, memh, 430 buf, 0, (ETHER_MIN_LEN - ETHER_CRC_LEN - savelen) >> 1); 431 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 432 } 433 434 out: 435 WE_MEM_DISABLE(wsc); 436 437 return (savelen); 438 } 439 440 static int 441 we_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount) 442 { 443 char *dst = dstv; 444 struct we_softc *wsc = (struct we_softc *)sc; 445 u_short tmp_amount; 446 447 /* Does copy wrap to lower addr in ring buffer? */ 448 if (src + amount > sc->mem_end) { 449 tmp_amount = sc->mem_end - src; 450 451 /* Copy amount up to end of NIC memory. */ 452 we_readmem(wsc, src, dst, tmp_amount); 453 454 amount -= tmp_amount; 455 src = sc->mem_ring; 456 dst += tmp_amount; 457 } 458 459 we_readmem(wsc, src, dst, amount); 460 461 return (src + amount); 462 } 463 464 static void 465 we_read_hdr(struct dp8390_softc *sc, int packet_ptr, 466 struct dp8390_ring *packet_hdrp) 467 { 468 struct we_softc *wsc = (struct we_softc *)sc; 469 470 we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp, 471 sizeof(struct dp8390_ring)); 472 #if BYTE_ORDER == BIG_ENDIAN 473 packet_hdrp->count = bswap16(packet_hdrp->count); 474 #endif 475 } 476 477 static void 478 we_recv_int(struct dp8390_softc *sc) 479 { 480 struct we_softc *wsc = (struct we_softc *)sc; 481 482 WE_MEM_ENABLE(wsc); 483 dp8390_rint(sc); 484 WE_MEM_DISABLE(wsc); 485 } 486 487 static void 488 we_media_init(struct dp8390_softc *sc) 489 { 490 struct we_softc *wsc = (void *) sc; 491 int defmedia = IFM_ETHER; 492 u_int8_t x; 493 494 if (sc->is790) { 495 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR); 496 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 497 x | WE790_HWR_SWH); 498 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) & 499 WE790_GCR_GPOUT) 500 defmedia |= IFM_10_2; 501 else 502 defmedia |= IFM_10_5; 503 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, 504 x & ~WE790_HWR_SWH); 505 } else { 506 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 507 if (x & WE_IRR_OUT2) 508 defmedia |= IFM_10_2; 509 else 510 defmedia |= IFM_10_5; 511 } 512 513 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 514 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL); 515 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL); 516 ifmedia_set(&sc->sc_media, defmedia); 517 } 518 519 static int 520 we_mediachange(struct dp8390_softc *sc) 521 { 522 523 /* 524 * Current media is already set up. Just reset the interface 525 * to let the new value take hold. The new media will be 526 * set up in we_init_card() called via dp8390_init(). 527 */ 528 dp8390_reset(sc); 529 return (0); 530 } 531 532 static void 533 we_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr) 534 { 535 struct ifmedia *ifm = &sc->sc_media; 536 537 /* 538 * The currently selected media is always the active media. 539 */ 540 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 541 } 542 543 static void 544 we_init_card(struct dp8390_softc *sc) 545 { 546 struct we_softc *wsc = (struct we_softc *)sc; 547 struct ifmedia *ifm = &sc->sc_media; 548 549 if (wsc->sc_init_hook) 550 (*wsc->sc_init_hook)(wsc); 551 552 we_set_media(wsc, ifm->ifm_cur->ifm_media); 553 } 554 555 static void 556 we_set_media(struct we_softc *wsc, int media) 557 { 558 struct dp8390_softc *sc = &wsc->sc_dp8390; 559 bus_space_tag_t asict = wsc->sc_asict; 560 bus_space_handle_t asich = wsc->sc_asich; 561 u_int8_t hwr, gcr, irr; 562 563 if (sc->is790) { 564 hwr = bus_space_read_1(asict, asich, WE790_HWR); 565 bus_space_write_1(asict, asich, WE790_HWR, 566 hwr | WE790_HWR_SWH); 567 gcr = bus_space_read_1(asict, asich, WE790_GCR); 568 if (IFM_SUBTYPE(media) == IFM_10_2) 569 gcr |= WE790_GCR_GPOUT; 570 else 571 gcr &= ~WE790_GCR_GPOUT; 572 bus_space_write_1(asict, asich, WE790_GCR, 573 gcr | WE790_GCR_LIT); 574 bus_space_write_1(asict, asich, WE790_HWR, 575 hwr & ~WE790_HWR_SWH); 576 return; 577 } 578 579 irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR); 580 if (IFM_SUBTYPE(media) == IFM_10_2) 581 irr |= WE_IRR_OUT2; 582 else 583 irr &= ~WE_IRR_OUT2; 584 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr); 585 } 586
Indexes created Tue Oct 14 01:09:49 GMT 2025