ne2000.c revision 1.59
1 /* $NetBSD: ne2000.c,v 1.59 2008/04/28 20:23:50 martin 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 * Common code shared by all NE2000-compatible Ethernet interfaces. 48 */ 49 50 #include <sys/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: ne2000.c,v 1.59 2008/04/28 20:23:50 martin Exp $"); 52 53 #include "opt_ipkdb.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/device.h> 58 #include <sys/socket.h> 59 #include <sys/mbuf.h> 60 #include <sys/syslog.h> 61 62 #include <net/if.h> 63 #include <net/if_dl.h> 64 #include <net/if_types.h> 65 #include <net/if_media.h> 66 67 #include <net/if_ether.h> 68 69 #include <sys/bswap.h> 70 #include <sys/bus.h> 71 72 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 73 #define bus_space_write_stream_2 bus_space_write_2 74 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 75 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 76 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 77 78 #ifdef IPKDB_NE 79 #include <ipkdb/ipkdb.h> 80 #endif 81 82 #include <dev/ic/dp8390reg.h> 83 #include <dev/ic/dp8390var.h> 84 85 #include <dev/ic/ne2000reg.h> 86 #include <dev/ic/ne2000var.h> 87 88 #include <dev/ic/ax88190reg.h> 89 90 int ne2000_write_mbuf(struct dp8390_softc *, struct mbuf *, int); 91 int ne2000_ring_copy(struct dp8390_softc *, int, void *, u_short); 92 void ne2000_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); 93 int ne2000_test_mem(struct dp8390_softc *); 94 95 void ne2000_writemem(bus_space_tag_t, bus_space_handle_t, 96 bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t, 97 int, int); 98 void ne2000_readmem(bus_space_tag_t, bus_space_handle_t, 99 bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int); 100 101 #define ASIC_BARRIER(asict, asich) \ 102 bus_space_barrier((asict), (asich), 0, 0x10, \ 103 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) 104 105 int 106 ne2000_attach(nsc, myea) 107 struct ne2000_softc *nsc; 108 u_int8_t *myea; 109 { 110 struct dp8390_softc *dsc = &nsc->sc_dp8390; 111 bus_space_tag_t nict = dsc->sc_regt; 112 bus_space_handle_t nich = dsc->sc_regh; 113 bus_space_tag_t asict = nsc->sc_asict; 114 bus_space_handle_t asich = nsc->sc_asich; 115 u_int8_t romdata[16]; 116 int memsize, i, useword; 117 118 /* 119 * Detect it again unless caller specified it; this gives us 120 * the memory size. 121 */ 122 if (nsc->sc_type == NE2000_TYPE_UNKNOWN) 123 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 124 125 /* 126 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 127 * card uses DL10019. 128 */ 129 switch (nsc->sc_type) { 130 case NE2000_TYPE_UNKNOWN: 131 default: 132 aprint_error_dev(dsc->sc_dev, "where did the card go?\n"); 133 return (1); 134 case NE2000_TYPE_NE1000: 135 memsize = 8192; 136 useword = 0; 137 break; 138 case NE2000_TYPE_NE2000: 139 case NE2000_TYPE_AX88190: /* XXX really? */ 140 case NE2000_TYPE_AX88790: 141 memsize = 8192 * 2; 142 useword = 1; 143 break; 144 case NE2000_TYPE_DL10019: 145 case NE2000_TYPE_DL10022: 146 memsize = 8192 * 3; 147 useword = 1; 148 break; 149 } 150 151 nsc->sc_useword = useword; 152 153 dsc->cr_proto = ED_CR_RD2; 154 if (nsc->sc_type == NE2000_TYPE_AX88190 || 155 nsc->sc_type == NE2000_TYPE_AX88790) { 156 dsc->rcr_proto = ED_RCR_INTT; 157 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 158 } else 159 dsc->rcr_proto = 0; 160 161 /* 162 * DCR gets: 163 * 164 * FIFO threshold to 8, No auto-init Remote DMA, 165 * byte order=80x86. 166 * 167 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 168 */ 169 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 170 171 dsc->test_mem = ne2000_test_mem; 172 dsc->ring_copy = ne2000_ring_copy; 173 dsc->write_mbuf = ne2000_write_mbuf; 174 dsc->read_hdr = ne2000_read_hdr; 175 176 /* Registers are linear. */ 177 for (i = 0; i < 16; i++) 178 dsc->sc_reg_map[i] = i; 179 180 /* 181 * NIC memory doens't start at zero on an NE board. 182 * The start address is tied to the bus width. 183 * (It happens to be computed the same way as mem size.) 184 */ 185 dsc->mem_start = memsize; 186 187 #ifdef GWETHER 188 { 189 int x, mstart = 0; 190 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 191 tbuf[ED_PAGE_SIZE]; 192 193 for (i = 0; i < ED_PAGE_SIZE; i++) 194 pbuf0[i] = 0; 195 196 /* Search for the start of RAM. */ 197 for (x = 1; x < 256; x++) { 198 ne2000_writemem(nict, nich, asict, asich, pbuf0, 199 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 200 ne2000_readmem(nict, nich, asict, asich, 201 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 202 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 203 for (i = 0; i < ED_PAGE_SIZE; i++) 204 pbuf[i] = 255 - x; 205 ne2000_writemem(nict, nich, asict, asich, 206 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 207 useword, 0); 208 ne2000_readmem(nict, nich, asict, asich, 209 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 210 useword); 211 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 212 mstart = x << ED_PAGE_SHIFT; 213 memsize = ED_PAGE_SIZE; 214 break; 215 } 216 } 217 } 218 219 if (mstart == 0) { 220 aprint_error_dev(&dsc->sc_dev, "cannot find start of RAM\n"); 221 return (1); 222 } 223 224 /* Search for the end of RAM. */ 225 for (++x; x < 256; x++) { 226 ne2000_writemem(nict, nich, asict, asich, pbuf0, 227 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 228 ne2000_readmem(nict, nich, asict, asich, 229 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 230 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 231 for (i = 0; i < ED_PAGE_SIZE; i++) 232 pbuf[i] = 255 - x; 233 ne2000_writemem(nict, nich, asict, asich, 234 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 235 useword, 0); 236 ne2000_readmem(nict, nich, asict, asich, 237 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 238 useword); 239 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 240 memsize += ED_PAGE_SIZE; 241 else 242 break; 243 } else 244 break; 245 } 246 247 printf("%s: RAM start 0x%x, size %d\n", 248 device_xname(&dsc->sc_dev), mstart, memsize); 249 250 dsc->mem_start = mstart; 251 } 252 #endif /* GWETHER */ 253 254 dsc->mem_size = memsize; 255 256 if (myea == NULL) { 257 /* Read the station address. */ 258 if (nsc->sc_type == NE2000_TYPE_AX88190 || 259 nsc->sc_type == NE2000_TYPE_AX88790) { 260 /* Select page 0 registers. */ 261 NIC_BARRIER(nict, nich); 262 bus_space_write_1(nict, nich, ED_P0_CR, 263 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 264 NIC_BARRIER(nict, nich); 265 /* Select word transfer. */ 266 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 267 NIC_BARRIER(nict, nich); 268 ne2000_readmem(nict, nich, asict, asich, 269 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 270 ETHER_ADDR_LEN, useword); 271 } else { 272 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 273 sizeof(romdata), useword); 274 for (i = 0; i < ETHER_ADDR_LEN; i++) 275 dsc->sc_enaddr[i] = 276 romdata[i * (useword ? 2 : 1)]; 277 } 278 } else 279 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 280 281 /* Clear any pending interrupts that might have occurred above. */ 282 NIC_BARRIER(nict, nich); 283 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 284 NIC_BARRIER(nict, nich); 285 286 if (dsc->sc_media_init == NULL) 287 dsc->sc_media_init = dp8390_media_init; 288 289 if (dp8390_config(dsc)) { 290 aprint_error_dev(dsc->sc_dev, "setup failed\n"); 291 return (1); 292 } 293 294 /* 295 * We need to compute mem_ring a bit differently; override the 296 * value set up in dp8390_config(). 297 */ 298 dsc->mem_ring = 299 dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 300 301 return (0); 302 } 303 304 /* 305 * Detect an NE-2000 or compatible. Returns a model code. 306 */ 307 int 308 ne2000_detect(nict, nich, asict, asich) 309 bus_space_tag_t nict; 310 bus_space_handle_t nich; 311 bus_space_tag_t asict; 312 bus_space_handle_t asich; 313 { 314 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 315 u_int8_t test_buffer[32], tmp; 316 int i, rv = NE2000_TYPE_UNKNOWN; 317 318 /* Reset the board. */ 319 #ifdef GWETHER 320 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 321 ASIC_BARRIER(asict, asich); 322 delay(200); 323 #endif /* GWETHER */ 324 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 325 ASIC_BARRIER(asict, asich); 326 delay(10000); 327 328 /* 329 * I don't know if this is necessary; probably cruft leftover from 330 * Clarkson packet driver code. Doesn't do a thing on the boards I've 331 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 332 * non-invasive...but some boards don't seem to reset and I don't have 333 * complete documentation on what the 'right' thing to do is...so we do 334 * the invasive thing for now. Yuck.] 335 */ 336 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 337 ASIC_BARRIER(asict, asich); 338 delay(5000); 339 340 /* 341 * This is needed because some NE clones apparently don't reset the 342 * NIC properly (or the NIC chip doesn't reset fully on power-up). 343 * XXX - this makes the probe invasive! Done against my better 344 * judgement. -DLG 345 */ 346 bus_space_write_1(nict, nich, ED_P0_CR, 347 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 348 NIC_BARRIER(nict, nich); 349 350 delay(5000); 351 352 /* 353 * Generic probe routine for testing for the existence of a DS8390. 354 * Must be performed after the NIC has just been reset. This 355 * works by looking at certain register values that are guaranteed 356 * to be initialized a certain way after power-up or reset. 357 * 358 * Specifically: 359 * 360 * Register reset bits set bits 361 * -------- ---------- -------- 362 * CR TXP, STA RD2, STP 363 * ISR RST 364 * IMR <all> 365 * DCR LAS 366 * TCR LB1, LB0 367 * 368 * We only look at CR and ISR, however, since looking at the others 369 * would require changing register pages, which would be intrusive 370 * if this isn't an 8390. 371 */ 372 373 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 374 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 375 (ED_CR_RD2 | ED_CR_STP)) 376 goto out; 377 378 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 379 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 380 goto out; 381 382 bus_space_write_1(nict, nich, 383 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 384 NIC_BARRIER(nict, nich); 385 386 for (i = 0; i < 100; i++) { 387 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 388 ED_ISR_RST) { 389 /* Ack the reset bit. */ 390 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 391 NIC_BARRIER(nict, nich); 392 break; 393 } 394 delay(100); 395 } 396 397 #if 0 398 /* XXX */ 399 if (i == 100) 400 goto out; 401 #endif 402 403 /* 404 * Test the ability to read and write to the NIC memory. This has 405 * the side effect of determining if this is an NE1000 or an NE2000. 406 */ 407 408 /* 409 * This prevents packets from being stored in the NIC memory when 410 * the readmem routine turns on the start bit in the CR. 411 */ 412 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 413 NIC_BARRIER(nict, nich); 414 415 /* Temporarily initialize DCR for byte operations. */ 416 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 417 418 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 419 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 420 421 /* 422 * Write a test pattern in byte mode. If this fails, then there 423 * probably isn't any memory at 8k - which likely means that the 424 * board is an NE2000. 425 */ 426 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 427 sizeof(test_pattern), 0, 1); 428 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 429 sizeof(test_buffer), 0); 430 431 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 432 /* not an NE1000 - try NE2000 */ 433 bus_space_write_1(nict, nich, ED_P0_DCR, 434 ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); 435 bus_space_write_1(nict, nich, ED_P0_PSTART, 436 16384 >> ED_PAGE_SHIFT); 437 bus_space_write_1(nict, nich, ED_P0_PSTOP, 438 32768 >> ED_PAGE_SHIFT); 439 440 /* 441 * Write the test pattern in word mode. If this also fails, 442 * then we don't know what this board is. 443 */ 444 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 445 sizeof(test_pattern), 1, 0); 446 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 447 sizeof(test_buffer), 1); 448 449 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) 450 goto out; /* not an NE2000 either */ 451 452 rv = NE2000_TYPE_NE2000; 453 } else { 454 /* We're an NE1000. */ 455 rv = NE2000_TYPE_NE1000; 456 } 457 458 /* Clear any pending interrupts that might have occurred above. */ 459 NIC_BARRIER(nict, nich); 460 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 461 462 out: 463 return (rv); 464 } 465 466 /* 467 * Write an mbuf chain to the destination NIC memory address using programmed 468 * I/O. 469 */ 470 int 471 ne2000_write_mbuf(sc, m, buf) 472 struct dp8390_softc *sc; 473 struct mbuf *m; 474 int buf; 475 { 476 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 477 bus_space_tag_t nict = sc->sc_regt; 478 bus_space_handle_t nich = sc->sc_regh; 479 bus_space_tag_t asict = nsc->sc_asict; 480 bus_space_handle_t asich = nsc->sc_asich; 481 int savelen, padlen; 482 int maxwait = 100; /* about 120us */ 483 484 savelen = m->m_pkthdr.len; 485 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 486 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 487 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 488 } else 489 padlen = 0; 490 491 492 /* Select page 0 registers. */ 493 NIC_BARRIER(nict, nich); 494 bus_space_write_1(nict, nich, ED_P0_CR, 495 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 496 NIC_BARRIER(nict, nich); 497 498 /* Reset remote DMA complete flag. */ 499 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 500 NIC_BARRIER(nict, nich); 501 502 /* Set up DMA byte count. */ 503 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 504 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 505 506 /* Set up destination address in NIC mem. */ 507 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 508 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 509 510 /* Set remote DMA write. */ 511 NIC_BARRIER(nict, nich); 512 bus_space_write_1(nict, nich, 513 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 514 NIC_BARRIER(nict, nich); 515 516 /* 517 * Transfer the mbuf chain to the NIC memory. NE2000 cards 518 * require that data be transferred as words, and only words, 519 * so that case requires some extra code to patch over odd-length 520 * mbufs. 521 */ 522 if (nsc->sc_type == NE2000_TYPE_NE1000) { 523 /* NE1000s are easy. */ 524 for (; m != 0; m = m->m_next) { 525 if (m->m_len) { 526 bus_space_write_multi_1(asict, asich, 527 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 528 m->m_len); 529 } 530 } 531 if (padlen) { 532 for(; padlen > 0; padlen--) 533 bus_space_write_1(asict, asich, 534 NE2000_ASIC_DATA, 0); 535 } 536 } else { 537 /* NE2000s are a bit trickier. */ 538 u_int8_t *data, savebyte[2]; 539 int l, leftover; 540 #ifdef DIAGNOSTIC 541 u_int8_t *lim; 542 #endif 543 /* Start out with no leftover data. */ 544 leftover = 0; 545 savebyte[0] = savebyte[1] = 0; 546 547 for (; m != 0; m = m->m_next) { 548 l = m->m_len; 549 if (l == 0) 550 continue; 551 data = mtod(m, u_int8_t *); 552 #ifdef DIAGNOSTIC 553 lim = data + l; 554 #endif 555 while (l > 0) { 556 if (leftover) { 557 /* 558 * Data left over (from mbuf or 559 * realignment). Buffer the next 560 * byte, and write it and the 561 * leftover data out. 562 */ 563 savebyte[1] = *data++; 564 l--; 565 bus_space_write_stream_2(asict, asich, 566 NE2000_ASIC_DATA, 567 *(u_int16_t *)savebyte); 568 leftover = 0; 569 } else if (BUS_SPACE_ALIGNED_POINTER(data, 570 u_int16_t) == 0) { 571 /* 572 * Unaligned data; buffer the next 573 * byte. 574 */ 575 savebyte[0] = *data++; 576 l--; 577 leftover = 1; 578 } else { 579 /* 580 * Aligned data; output contiguous 581 * words as much as we can, then 582 * buffer the remaining byte, if any. 583 */ 584 leftover = l & 1; 585 l &= ~1; 586 bus_space_write_multi_stream_2(asict, 587 asich, NE2000_ASIC_DATA, 588 (u_int16_t *)data, l >> 1); 589 data += l; 590 if (leftover) 591 savebyte[0] = *data++; 592 l = 0; 593 } 594 } 595 if (l < 0) 596 panic("ne2000_write_mbuf: negative len"); 597 #ifdef DIAGNOSTIC 598 if (data != lim) 599 panic("ne2000_write_mbuf: data != lim"); 600 #endif 601 } 602 if (leftover) { 603 savebyte[1] = 0; 604 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 605 *(u_int16_t *)savebyte); 606 } 607 if (padlen) { 608 for(; padlen > 1; padlen -= 2) 609 bus_space_write_stream_2(asict, asich, 610 NE2000_ASIC_DATA, 0); 611 } 612 } 613 NIC_BARRIER(nict, nich); 614 615 /* AX88796 doesn't seem to have remote DMA complete */ 616 if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) 617 return(savelen); 618 619 /* 620 * Wait for remote DMA to complete. This is necessary because on the 621 * transmit side, data is handled internally by the NIC in bursts, and 622 * we can't start another remote DMA until this one completes. Not 623 * waiting causes really bad things to happen - like the NIC wedging 624 * the bus. 625 */ 626 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 627 ED_ISR_RDC) && --maxwait) { 628 (void)bus_space_read_1(nict, nich, ED_P0_CRDA1); 629 (void)bus_space_read_1(nict, nich, ED_P0_CRDA0); 630 NIC_BARRIER(nict, nich); 631 DELAY(1); 632 } 633 634 if (maxwait == 0) { 635 log(LOG_WARNING, 636 "%s: remote transmit DMA failed to complete\n", 637 device_xname(sc->sc_dev)); 638 dp8390_reset(sc); 639 } 640 641 return (savelen); 642 } 643 644 /* 645 * Given a source and destination address, copy 'amout' of a packet from 646 * the ring buffer into a linear destination buffer. Takes into account 647 * ring-wrap. 648 */ 649 int 650 ne2000_ring_copy(sc, src, dstv, amount) 651 struct dp8390_softc *sc; 652 int src; 653 void *dstv; 654 u_short amount; 655 { 656 char *dst = dstv; 657 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 658 bus_space_tag_t nict = sc->sc_regt; 659 bus_space_handle_t nich = sc->sc_regh; 660 bus_space_tag_t asict = nsc->sc_asict; 661 bus_space_handle_t asich = nsc->sc_asich; 662 u_short tmp_amount; 663 int useword = nsc->sc_useword; 664 665 /* Does copy wrap to lower addr in ring buffer? */ 666 if (src + amount > sc->mem_end) { 667 tmp_amount = sc->mem_end - src; 668 669 /* Copy amount up to end of NIC memory. */ 670 ne2000_readmem(nict, nich, asict, asich, src, 671 (u_int8_t *)dst, tmp_amount, useword); 672 673 amount -= tmp_amount; 674 src = sc->mem_ring; 675 dst += tmp_amount; 676 } 677 678 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 679 amount, useword); 680 681 return (src + amount); 682 } 683 684 void 685 ne2000_read_hdr(sc, buf, hdr) 686 struct dp8390_softc *sc; 687 int buf; 688 struct dp8390_ring *hdr; 689 { 690 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 691 692 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 693 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 694 nsc->sc_useword); 695 #if BYTE_ORDER == BIG_ENDIAN 696 hdr->count = bswap16(hdr->count); 697 #endif 698 } 699 700 int 701 ne2000_test_mem(struct dp8390_softc *sc) 702 { 703 704 /* Noop. */ 705 return (0); 706 } 707 708 /* 709 * Given a NIC memory source address and a host memory destination address, 710 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 711 * rounded up to a word - ok as long as mbufs are word sized. 712 */ 713 void 714 ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword) 715 bus_space_tag_t nict; 716 bus_space_handle_t nich; 717 bus_space_tag_t asict; 718 bus_space_handle_t asich; 719 int src; 720 u_int8_t *dst; 721 size_t amount; 722 int useword; 723 { 724 725 /* Select page 0 registers. */ 726 NIC_BARRIER(nict, nich); 727 bus_space_write_1(nict, nich, ED_P0_CR, 728 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 729 NIC_BARRIER(nict, nich); 730 731 /* Round up to a word. */ 732 if (amount & 1) 733 ++amount; 734 735 /* Set up DMA byte count. */ 736 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 737 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 738 739 /* Set up source address in NIC mem. */ 740 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 741 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 742 743 NIC_BARRIER(nict, nich); 744 bus_space_write_1(nict, nich, ED_P0_CR, 745 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 746 747 ASIC_BARRIER(asict, asich); 748 if (useword) 749 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 750 (u_int16_t *)dst, amount >> 1); 751 else 752 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 753 dst, amount); 754 } 755 756 /* 757 * Stripped down routine for writing a linear buffer to NIC memory. Only 758 * used in the probe routine to test the memory. 'len' must be even. 759 */ 760 void 761 ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword, quiet) 762 bus_space_tag_t nict; 763 bus_space_handle_t nich; 764 bus_space_tag_t asict; 765 bus_space_handle_t asich; 766 u_int8_t *src; 767 int dst; 768 size_t len; 769 int useword; 770 int quiet; 771 { 772 int maxwait = 100; /* about 120us */ 773 774 /* Select page 0 registers. */ 775 NIC_BARRIER(nict, nich); 776 bus_space_write_1(nict, nich, ED_P0_CR, 777 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 778 NIC_BARRIER(nict, nich); 779 780 /* Reset remote DMA complete flag. */ 781 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 782 NIC_BARRIER(nict, nich); 783 784 /* Set up DMA byte count. */ 785 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 786 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 787 788 /* Set up destination address in NIC mem. */ 789 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 790 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 791 792 /* Set remote DMA write. */ 793 NIC_BARRIER(nict, nich); 794 bus_space_write_1(nict, nich, ED_P0_CR, 795 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 796 NIC_BARRIER(nict, nich); 797 798 ASIC_BARRIER(asict, asich); 799 if (useword) 800 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 801 (u_int16_t *)src, len >> 1); 802 else 803 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 804 src, len); 805 ASIC_BARRIER(asict, asich); 806 807 /* 808 * Wait for remote DMA to complete. This is necessary because on the 809 * transmit side, data is handled internally by the NIC in bursts, and 810 * we can't start another remote DMA until this one completes. Not 811 * waiting causes really bad things to happen - like the NIC wedging 812 * the bus. 813 */ 814 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 815 ED_ISR_RDC) && --maxwait) 816 DELAY(1); 817 818 if (!quiet && maxwait == 0) 819 printf("ne2000_writemem: failed to complete\n"); 820 } 821 822 int 823 ne2000_detach(sc, flags) 824 struct ne2000_softc *sc; 825 int flags; 826 { 827 828 return (dp8390_detach(&sc->sc_dp8390, flags)); 829 } 830 831 #ifdef IPKDB_NE 832 /* 833 * This code is essentially the same as ne2000_attach above. 834 */ 835 int 836 ne2000_ipkdb_attach(kip) 837 struct ipkdb_if *kip; 838 { 839 struct ne2000_softc *np = kip->port; 840 struct dp8390_softc *dp = &np->sc_dp8390; 841 bus_space_tag_t nict = dp->sc_regt; 842 bus_space_handle_t nich = dp->sc_regh; 843 int i, useword; 844 845 #ifdef GWETHER 846 /* Not supported (yet?) */ 847 return -1; 848 #endif 849 850 if (np->sc_type == 0) 851 np->sc_type = ne2000_detect(nict, nich, 852 np->sc_asict, np->sc_asich); 853 if (np->sc_type == 0) 854 return -1; 855 856 useword = np->sc_useword; 857 858 dp->cr_proto = ED_CR_RD2; 859 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 860 dp->rcr_proto = 0; 861 862 dp->test_mem = ne2000_test_mem; 863 dp->ring_copy = ne2000_ring_copy; 864 dp->write_mbuf = ne2000_write_mbuf; 865 dp->read_hdr = ne2000_read_hdr; 866 867 for (i = 0; i < 16; i++) 868 dp->sc_reg_map[i] = i; 869 870 switch (np->sc_type) { 871 case NE2000_TYPE_NE1000: 872 dp->mem_start = dp->mem_size = 8192; 873 kip->name = "ne1000"; 874 break; 875 case NE2000_TYPE_NE2000: 876 dp->mem_start = dp->mem_size = 8192 * 2; 877 kip->name = "ne2000"; 878 break; 879 case NE2000_TYPE_DL10019: 880 case NE2000_TYPE_DL10022: 881 dp->mem_start = dp->mem_size = 8192 * 3; 882 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 883 "dl10022" : "dl10019"; 884 break; 885 case NE2000_TYPE_AX88190: 886 case NE2000_TYPE_AX88790: 887 dp->rcr_proto = ED_RCR_INTT; 888 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 889 dp->mem_start = dp->mem_size = 8192 * 2; 890 kip->name = "ax88190"; 891 break; 892 default: 893 return -1; 894 break; 895 } 896 897 if (dp8390_ipkdb_attach(kip)) 898 return -1; 899 900 dp->mem_ring = dp->mem_start 901 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 902 903 if (!(kip->flags & IPKDB_MYHW)) { 904 char romdata[16]; 905 906 /* Read the station address. */ 907 if (np->sc_type == NE2000_TYPE_AX88190 || 908 np->sc_type == NE2000_TYPE_AX88790) { 909 /* Select page 0 registers. */ 910 NIC_BARRIER(nict, nich); 911 bus_space_write_1(nict, nich, ED_P0_CR, 912 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 913 NIC_BARRIER(nict, nich); 914 /* Select word transfer */ 915 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 916 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 917 AX88190_NODEID_OFFSET, kip->myenetaddr, 918 ETHER_ADDR_LEN, useword); 919 } else { 920 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 921 0, romdata, sizeof romdata, useword); 922 for (i = 0; i < ETHER_ADDR_LEN; i++) 923 kip->myenetaddr[i] = romdata[i << useword]; 924 } 925 kip->flags |= IPKDB_MYHW; 926 927 } 928 dp8390_stop(dp); 929 930 return 0; 931 } 932 #endif 933 934 void 935 ne2000_power(int why, void *arg) 936 { 937 struct ne2000_softc *sc = arg; 938 struct dp8390_softc *dsc = &sc->sc_dp8390; 939 struct ifnet *ifp = &dsc->sc_ec.ec_if; 940 int s; 941 942 s = splnet(); 943 switch (why) { 944 case PWR_SUSPEND: 945 case PWR_STANDBY: 946 dp8390_stop(dsc); 947 dp8390_disable(dsc); 948 break; 949 case PWR_RESUME: 950 if (ifp->if_flags & IFF_UP) { 951 if (dp8390_enable(dsc) == 0) 952 dp8390_init(dsc); 953 } 954 break; 955 case PWR_SOFTSUSPEND: 956 case PWR_SOFTSTANDBY: 957 case PWR_SOFTRESUME: 958 break; 959 } 960 splx(s); 961 } 962
Indexes created Sun Oct 19 02:09:48 GMT 2025