ne2000.c revision 1.46
1 /* $NetBSD: ne2000.c,v 1.46 2005/02/26 10:29:20 bsh 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 * Common code shared by all NE2000-compatible Ethernet interfaces. 55 */ 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: ne2000.c,v 1.46 2005/02/26 10:29:20 bsh Exp $"); 59 60 #include "opt_ipkdb.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/device.h> 65 #include <sys/socket.h> 66 #include <sys/mbuf.h> 67 #include <sys/syslog.h> 68 69 #include <net/if.h> 70 #include <net/if_dl.h> 71 #include <net/if_types.h> 72 #include <net/if_media.h> 73 74 #include <net/if_ether.h> 75 76 #include <machine/bswap.h> 77 #include <machine/bus.h> 78 79 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 80 #define bus_space_write_stream_2 bus_space_write_2 81 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 82 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 83 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 84 85 #ifdef IPKDB_NE 86 #include <ipkdb/ipkdb.h> 87 #endif 88 89 #include <dev/ic/dp8390reg.h> 90 #include <dev/ic/dp8390var.h> 91 92 #include <dev/ic/ne2000reg.h> 93 #include <dev/ic/ne2000var.h> 94 95 #include <dev/ic/ax88190reg.h> 96 97 #if BYTE_ORDER == BIG_ENDIAN 98 #include <machine/bswap.h> 99 #endif 100 101 int ne2000_write_mbuf(struct dp8390_softc *, struct mbuf *, int); 102 int ne2000_ring_copy(struct dp8390_softc *, int, caddr_t, u_short); 103 void ne2000_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); 104 int ne2000_test_mem(struct dp8390_softc *); 105 106 void ne2000_writemem(bus_space_tag_t, bus_space_handle_t, 107 bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t, 108 int, int); 109 void ne2000_readmem(bus_space_tag_t, bus_space_handle_t, 110 bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int); 111 112 #define ASIC_BARRIER(asict, asich) \ 113 bus_space_barrier((asict), (asich), 0, 0x10, \ 114 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) 115 116 int 117 ne2000_attach(nsc, myea) 118 struct ne2000_softc *nsc; 119 u_int8_t *myea; 120 { 121 struct dp8390_softc *dsc = &nsc->sc_dp8390; 122 bus_space_tag_t nict = dsc->sc_regt; 123 bus_space_handle_t nich = dsc->sc_regh; 124 bus_space_tag_t asict = nsc->sc_asict; 125 bus_space_handle_t asich = nsc->sc_asich; 126 u_int8_t romdata[16]; 127 int memsize, i, useword; 128 129 /* 130 * Detect it again unless caller specified it; this gives us 131 * the memory size. 132 */ 133 if (nsc->sc_type == NE2000_TYPE_UNKNOWN) 134 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 135 136 /* 137 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 138 * card uses DL10019. 139 */ 140 switch (nsc->sc_type) { 141 case NE2000_TYPE_UNKNOWN: 142 default: 143 printf("%s: where did the card go?\n", dsc->sc_dev.dv_xname); 144 return (1); 145 case NE2000_TYPE_NE1000: 146 memsize = 8192; 147 useword = 0; 148 break; 149 case NE2000_TYPE_NE2000: 150 case NE2000_TYPE_AX88190: /* XXX really? */ 151 case NE2000_TYPE_AX88790: 152 memsize = 8192 * 2; 153 useword = 1; 154 break; 155 case NE2000_TYPE_DL10019: 156 case NE2000_TYPE_DL10022: 157 memsize = 8192 * 3; 158 useword = 1; 159 break; 160 } 161 162 nsc->sc_useword = useword; 163 164 dsc->cr_proto = ED_CR_RD2; 165 if (nsc->sc_type == NE2000_TYPE_AX88190 || 166 nsc->sc_type == NE2000_TYPE_AX88790) { 167 dsc->rcr_proto = ED_RCR_INTT; 168 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 169 } else 170 dsc->rcr_proto = 0; 171 172 /* 173 * DCR gets: 174 * 175 * FIFO threshold to 8, No auto-init Remote DMA, 176 * byte order=80x86. 177 * 178 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 179 */ 180 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 181 182 dsc->test_mem = ne2000_test_mem; 183 dsc->ring_copy = ne2000_ring_copy; 184 dsc->write_mbuf = ne2000_write_mbuf; 185 dsc->read_hdr = ne2000_read_hdr; 186 187 /* Registers are linear. */ 188 for (i = 0; i < 16; i++) 189 dsc->sc_reg_map[i] = i; 190 191 /* 192 * NIC memory doens't start at zero on an NE board. 193 * The start address is tied to the bus width. 194 * (It happens to be computed the same way as mem size.) 195 */ 196 dsc->mem_start = memsize; 197 198 #ifdef GWETHER 199 { 200 int x, mstart = 0; 201 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 202 tbuf[ED_PAGE_SIZE]; 203 204 for (i = 0; i < ED_PAGE_SIZE; i++) 205 pbuf0[i] = 0; 206 207 /* Search for the start of RAM. */ 208 for (x = 1; x < 256; x++) { 209 ne2000_writemem(nict, nich, asict, asich, pbuf0, 210 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 211 ne2000_readmem(nict, nich, asict, asich, 212 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 213 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 214 for (i = 0; i < ED_PAGE_SIZE; i++) 215 pbuf[i] = 255 - x; 216 ne2000_writemem(nict, nich, asict, asich, 217 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 218 useword, 0); 219 ne2000_readmem(nict, nich, asict, asich, 220 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 221 useword); 222 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 223 mstart = x << ED_PAGE_SHIFT; 224 memsize = ED_PAGE_SIZE; 225 break; 226 } 227 } 228 } 229 230 if (mstart == 0) { 231 printf("%s: cannot find start of RAM\n", 232 dsc->sc_dev.dv_xname); 233 return (1); 234 } 235 236 /* Search for the end of RAM. */ 237 for (++x; x < 256; x++) { 238 ne2000_writemem(nict, nich, asict, asich, pbuf0, 239 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 240 ne2000_readmem(nict, nich, asict, asich, 241 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 242 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 243 for (i = 0; i < ED_PAGE_SIZE; i++) 244 pbuf[i] = 255 - x; 245 ne2000_writemem(nict, nich, asict, asich, 246 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 247 useword, 0); 248 ne2000_readmem(nict, nich, asict, asich, 249 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 250 useword); 251 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 252 memsize += ED_PAGE_SIZE; 253 else 254 break; 255 } else 256 break; 257 } 258 259 printf("%s: RAM start 0x%x, size %d\n", 260 dsc->sc_dev.dv_xname, mstart, memsize); 261 262 dsc->mem_start = mstart; 263 } 264 #endif /* GWETHER */ 265 266 dsc->mem_size = memsize; 267 268 if (myea == NULL) { 269 /* Read the station address. */ 270 if (nsc->sc_type == NE2000_TYPE_AX88190 || 271 nsc->sc_type == NE2000_TYPE_AX88790) { 272 /* Select page 0 registers. */ 273 NIC_BARRIER(nict, nich); 274 bus_space_write_1(nict, nich, ED_P0_CR, 275 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 276 NIC_BARRIER(nict, nich); 277 /* Select word transfer. */ 278 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 279 NIC_BARRIER(nict, nich); 280 ne2000_readmem(nict, nich, asict, asich, 281 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 282 ETHER_ADDR_LEN, useword); 283 } else { 284 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 285 sizeof(romdata), useword); 286 for (i = 0; i < ETHER_ADDR_LEN; i++) 287 dsc->sc_enaddr[i] = 288 romdata[i * (useword ? 2 : 1)]; 289 } 290 } else 291 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 292 293 /* Clear any pending interrupts that might have occurred above. */ 294 NIC_BARRIER(nict, nich); 295 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 296 NIC_BARRIER(nict, nich); 297 298 if (dsc->sc_media_init == NULL) 299 dsc->sc_media_init = dp8390_media_init; 300 301 if (dp8390_config(dsc)) { 302 printf("%s: setup failed\n", dsc->sc_dev.dv_xname); 303 return (1); 304 } 305 306 /* 307 * We need to compute mem_ring a bit differently; override the 308 * value set up in dp8390_config(). 309 */ 310 dsc->mem_ring = 311 dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 312 313 return (0); 314 } 315 316 /* 317 * Detect an NE-2000 or compatible. Returns a model code. 318 */ 319 int 320 ne2000_detect(nict, nich, asict, asich) 321 bus_space_tag_t nict; 322 bus_space_handle_t nich; 323 bus_space_tag_t asict; 324 bus_space_handle_t asich; 325 { 326 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 327 u_int8_t test_buffer[32], tmp; 328 int i, rv = 0; 329 330 /* Reset the board. */ 331 #ifdef GWETHER 332 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 333 ASIC_BARRIER(asict, asich); 334 delay(200); 335 #endif /* GWETHER */ 336 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 337 ASIC_BARRIER(asict, asich); 338 delay(10000); 339 340 /* 341 * I don't know if this is necessary; probably cruft leftover from 342 * Clarkson packet driver code. Doesn't do a thing on the boards I've 343 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 344 * non-invasive...but some boards don't seem to reset and I don't have 345 * complete documentation on what the 'right' thing to do is...so we do 346 * the invasive thing for now. Yuck.] 347 */ 348 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 349 ASIC_BARRIER(asict, asich); 350 delay(5000); 351 352 /* 353 * This is needed because some NE clones apparently don't reset the 354 * NIC properly (or the NIC chip doesn't reset fully on power-up). 355 * XXX - this makes the probe invasive! Done against my better 356 * judgement. -DLG 357 */ 358 bus_space_write_1(nict, nich, ED_P0_CR, 359 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 360 NIC_BARRIER(nict, nich); 361 362 delay(5000); 363 364 /* 365 * Generic probe routine for testing for the existence of a DS8390. 366 * Must be performed after the NIC has just been reset. This 367 * works by looking at certain register values that are guaranteed 368 * to be initialized a certain way after power-up or reset. 369 * 370 * Specifically: 371 * 372 * Register reset bits set bits 373 * -------- ---------- -------- 374 * CR TXP, STA RD2, STP 375 * ISR RST 376 * IMR <all> 377 * DCR LAS 378 * TCR LB1, LB0 379 * 380 * We only look at CR and ISR, however, since looking at the others 381 * would require changing register pages, which would be intrusive 382 * if this isn't an 8390. 383 */ 384 385 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 386 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 387 (ED_CR_RD2 | ED_CR_STP)) 388 goto out; 389 390 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 391 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 392 goto out; 393 394 bus_space_write_1(nict, nich, 395 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 396 NIC_BARRIER(nict, nich); 397 398 for (i = 0; i < 100; i++) { 399 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 400 ED_ISR_RST) { 401 /* Ack the reset bit. */ 402 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 403 NIC_BARRIER(nict, nich); 404 break; 405 } 406 delay(100); 407 } 408 409 #if 0 410 /* XXX */ 411 if (i == 100) 412 goto out; 413 #endif 414 415 /* 416 * Test the ability to read and write to the NIC memory. This has 417 * the side effect of determining if this is an NE1000 or an NE2000. 418 */ 419 420 /* 421 * This prevents packets from being stored in the NIC memory when 422 * the readmem routine turns on the start bit in the CR. 423 */ 424 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 425 NIC_BARRIER(nict, nich); 426 427 /* Temporarily initialize DCR for byte operations. */ 428 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 429 430 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 431 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 432 433 /* 434 * Write a test pattern in byte mode. If this fails, then there 435 * probably isn't any memory at 8k - which likely means that the 436 * board is an NE2000. 437 */ 438 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 439 sizeof(test_pattern), 0, 1); 440 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 441 sizeof(test_buffer), 0); 442 443 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 444 /* not an NE1000 - try NE2000 */ 445 bus_space_write_1(nict, nich, ED_P0_DCR, 446 ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); 447 bus_space_write_1(nict, nich, ED_P0_PSTART, 448 16384 >> ED_PAGE_SHIFT); 449 bus_space_write_1(nict, nich, ED_P0_PSTOP, 450 32768 >> ED_PAGE_SHIFT); 451 452 /* 453 * Write the test pattern in word mode. If this also fails, 454 * then we don't know what this board is. 455 */ 456 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 457 sizeof(test_pattern), 1, 0); 458 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 459 sizeof(test_buffer), 1); 460 461 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) 462 goto out; /* not an NE2000 either */ 463 464 rv = NE2000_TYPE_NE2000; 465 } else { 466 /* We're an NE1000. */ 467 rv = NE2000_TYPE_NE1000; 468 } 469 470 /* Clear any pending interrupts that might have occurred above. */ 471 NIC_BARRIER(nict, nich); 472 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 473 474 out: 475 return (rv); 476 } 477 478 /* 479 * Write an mbuf chain to the destination NIC memory address using programmed 480 * I/O. 481 */ 482 int 483 ne2000_write_mbuf(sc, m, buf) 484 struct dp8390_softc *sc; 485 struct mbuf *m; 486 int buf; 487 { 488 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 489 bus_space_tag_t nict = sc->sc_regt; 490 bus_space_handle_t nich = sc->sc_regh; 491 bus_space_tag_t asict = nsc->sc_asict; 492 bus_space_handle_t asich = nsc->sc_asich; 493 int savelen, padlen; 494 int maxwait = 100; /* about 120us */ 495 496 savelen = m->m_pkthdr.len; 497 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 498 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 499 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 500 } else 501 padlen = 0; 502 503 504 /* Select page 0 registers. */ 505 NIC_BARRIER(nict, nich); 506 bus_space_write_1(nict, nich, ED_P0_CR, 507 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 508 NIC_BARRIER(nict, nich); 509 510 /* Reset remote DMA complete flag. */ 511 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 512 NIC_BARRIER(nict, nich); 513 514 /* Set up DMA byte count. */ 515 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 516 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 517 518 /* Set up destination address in NIC mem. */ 519 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 520 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 521 522 /* Set remote DMA write. */ 523 NIC_BARRIER(nict, nich); 524 bus_space_write_1(nict, nich, 525 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 526 NIC_BARRIER(nict, nich); 527 528 /* 529 * Transfer the mbuf chain to the NIC memory. NE2000 cards 530 * require that data be transferred as words, and only words, 531 * so that case requires some extra code to patch over odd-length 532 * mbufs. 533 */ 534 if (nsc->sc_type == NE2000_TYPE_NE1000) { 535 /* NE1000s are easy. */ 536 for (; m != 0; m = m->m_next) { 537 if (m->m_len) { 538 bus_space_write_multi_1(asict, asich, 539 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 540 m->m_len); 541 } 542 } 543 if (padlen) { 544 for(; padlen > 0; padlen--) 545 bus_space_write_1(asict, asich, 546 NE2000_ASIC_DATA, 0); 547 } 548 } else { 549 /* NE2000s are a bit trickier. */ 550 u_int8_t *data, savebyte[2]; 551 int l, leftover; 552 #ifdef DIAGNOSTIC 553 u_int8_t *lim; 554 #endif 555 /* Start out with no leftover data. */ 556 leftover = 0; 557 savebyte[0] = savebyte[1] = 0; 558 559 for (; m != 0; m = m->m_next) { 560 l = m->m_len; 561 if (l == 0) 562 continue; 563 data = mtod(m, u_int8_t *); 564 #ifdef DIAGNOSTIC 565 lim = data + l; 566 #endif 567 while (l > 0) { 568 if (leftover) { 569 /* 570 * Data left over (from mbuf or 571 * realignment). Buffer the next 572 * byte, and write it and the 573 * leftover data out. 574 */ 575 savebyte[1] = *data++; 576 l--; 577 bus_space_write_stream_2(asict, asich, 578 NE2000_ASIC_DATA, 579 *(u_int16_t *)savebyte); 580 leftover = 0; 581 } else if (BUS_SPACE_ALIGNED_POINTER(data, 582 u_int16_t) == 0) { 583 /* 584 * Unaligned data; buffer the next 585 * byte. 586 */ 587 savebyte[0] = *data++; 588 l--; 589 leftover = 1; 590 } else { 591 /* 592 * Aligned data; output contiguous 593 * words as much as we can, then 594 * buffer the remaining byte, if any. 595 */ 596 leftover = l & 1; 597 l &= ~1; 598 bus_space_write_multi_stream_2(asict, 599 asich, NE2000_ASIC_DATA, 600 (u_int16_t *)data, l >> 1); 601 data += l; 602 if (leftover) 603 savebyte[0] = *data++; 604 l = 0; 605 } 606 } 607 if (l < 0) 608 panic("ne2000_write_mbuf: negative len"); 609 #ifdef DIAGNOSTIC 610 if (data != lim) 611 panic("ne2000_write_mbuf: data != lim"); 612 #endif 613 } 614 if (leftover) { 615 savebyte[1] = 0; 616 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 617 *(u_int16_t *)savebyte); 618 } 619 if (padlen) { 620 for(; padlen > 1; padlen -= 2) 621 bus_space_write_stream_2(asict, asich, 622 NE2000_ASIC_DATA, 0); 623 } 624 } 625 NIC_BARRIER(nict, nich); 626 627 /* AX88796 doesn't seem to have remote DMA complete */ 628 if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) 629 return(savelen); 630 631 /* 632 * Wait for remote DMA to complete. This is necessary because on the 633 * transmit side, data is handled internally by the NIC in bursts, and 634 * we can't start another remote DMA until this one completes. Not 635 * waiting causes really bad things to happen - like the NIC wedging 636 * the bus. 637 */ 638 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 639 ED_ISR_RDC) && --maxwait) { 640 bus_space_read_1(nict, nich, ED_P0_CRDA1); 641 bus_space_read_1(nict, nich, ED_P0_CRDA0); 642 NIC_BARRIER(nict, nich); 643 DELAY(1); 644 } 645 646 if (maxwait == 0) { 647 log(LOG_WARNING, 648 "%s: remote transmit DMA failed to complete\n", 649 sc->sc_dev.dv_xname); 650 dp8390_reset(sc); 651 } 652 653 return (savelen); 654 } 655 656 /* 657 * Given a source and destination address, copy 'amout' of a packet from 658 * the ring buffer into a linear destination buffer. Takes into account 659 * ring-wrap. 660 */ 661 int 662 ne2000_ring_copy(sc, src, dst, amount) 663 struct dp8390_softc *sc; 664 int src; 665 caddr_t dst; 666 u_short amount; 667 { 668 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 669 bus_space_tag_t nict = sc->sc_regt; 670 bus_space_handle_t nich = sc->sc_regh; 671 bus_space_tag_t asict = nsc->sc_asict; 672 bus_space_handle_t asich = nsc->sc_asich; 673 u_short tmp_amount; 674 int useword = nsc->sc_useword; 675 676 /* Does copy wrap to lower addr in ring buffer? */ 677 if (src + amount > sc->mem_end) { 678 tmp_amount = sc->mem_end - src; 679 680 /* Copy amount up to end of NIC memory. */ 681 ne2000_readmem(nict, nich, asict, asich, src, 682 (u_int8_t *)dst, tmp_amount, useword); 683 684 amount -= tmp_amount; 685 src = sc->mem_ring; 686 dst += tmp_amount; 687 } 688 689 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 690 amount, useword); 691 692 return (src + amount); 693 } 694 695 void 696 ne2000_read_hdr(sc, buf, hdr) 697 struct dp8390_softc *sc; 698 int buf; 699 struct dp8390_ring *hdr; 700 { 701 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 702 703 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 704 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 705 nsc->sc_useword); 706 #if BYTE_ORDER == BIG_ENDIAN 707 hdr->count = bswap16(hdr->count); 708 #endif 709 } 710 711 int 712 ne2000_test_mem(sc) 713 struct dp8390_softc *sc; 714 { 715 716 /* Noop. */ 717 return (0); 718 } 719 720 /* 721 * Given a NIC memory source address and a host memory destination address, 722 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 723 * rounded up to a word - ok as long as mbufs are word sized. 724 */ 725 void 726 ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword) 727 bus_space_tag_t nict; 728 bus_space_handle_t nich; 729 bus_space_tag_t asict; 730 bus_space_handle_t asich; 731 int src; 732 u_int8_t *dst; 733 size_t amount; 734 int useword; 735 { 736 737 /* Select page 0 registers. */ 738 NIC_BARRIER(nict, nich); 739 bus_space_write_1(nict, nich, ED_P0_CR, 740 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 741 NIC_BARRIER(nict, nich); 742 743 /* Round up to a word. */ 744 if (amount & 1) 745 ++amount; 746 747 /* Set up DMA byte count. */ 748 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 749 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 750 751 /* Set up source address in NIC mem. */ 752 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 753 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 754 755 NIC_BARRIER(nict, nich); 756 bus_space_write_1(nict, nich, ED_P0_CR, 757 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 758 759 ASIC_BARRIER(asict, asich); 760 if (useword) 761 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 762 (u_int16_t *)dst, amount >> 1); 763 else 764 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 765 dst, amount); 766 } 767 768 /* 769 * Stripped down routine for writing a linear buffer to NIC memory. Only 770 * used in the probe routine to test the memory. 'len' must be even. 771 */ 772 void 773 ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword, quiet) 774 bus_space_tag_t nict; 775 bus_space_handle_t nich; 776 bus_space_tag_t asict; 777 bus_space_handle_t asich; 778 u_int8_t *src; 779 int dst; 780 size_t len; 781 int useword; 782 int quiet; 783 { 784 int maxwait = 100; /* about 120us */ 785 786 /* Select page 0 registers. */ 787 NIC_BARRIER(nict, nich); 788 bus_space_write_1(nict, nich, ED_P0_CR, 789 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 790 NIC_BARRIER(nict, nich); 791 792 /* Reset remote DMA complete flag. */ 793 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 794 NIC_BARRIER(nict, nich); 795 796 /* Set up DMA byte count. */ 797 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 798 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 799 800 /* Set up destination address in NIC mem. */ 801 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 802 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 803 804 /* Set remote DMA write. */ 805 NIC_BARRIER(nict, nich); 806 bus_space_write_1(nict, nich, ED_P0_CR, 807 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 808 NIC_BARRIER(nict, nich); 809 810 ASIC_BARRIER(asict, asich); 811 if (useword) 812 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 813 (u_int16_t *)src, len >> 1); 814 else 815 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 816 src, len); 817 ASIC_BARRIER(asict, asich); 818 819 /* 820 * Wait for remote DMA to complete. This is necessary because on the 821 * transmit side, data is handled internally by the NIC in bursts, and 822 * we can't start another remote DMA until this one completes. Not 823 * waiting causes really bad things to happen - like the NIC wedging 824 * the bus. 825 */ 826 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 827 ED_ISR_RDC) && --maxwait) 828 DELAY(1); 829 830 if (!quiet && maxwait == 0) 831 printf("ne2000_writemem: failed to complete\n"); 832 } 833 834 int 835 ne2000_detach(sc, flags) 836 struct ne2000_softc *sc; 837 int flags; 838 { 839 840 return (dp8390_detach(&sc->sc_dp8390, flags)); 841 } 842 843 #ifdef IPKDB_NE 844 /* 845 * This code is essentially the same as ne2000_attach above. 846 */ 847 int 848 ne2000_ipkdb_attach(kip) 849 struct ipkdb_if *kip; 850 { 851 struct ne2000_softc *np = kip->port; 852 struct dp8390_softc *dp = &np->sc_dp8390; 853 bus_space_tag_t nict = dp->sc_regt; 854 bus_space_handle_t nich = dp->sc_regh; 855 int i, useword; 856 857 #ifdef GWETHER 858 /* Not supported (yet?) */ 859 return -1; 860 #endif 861 862 if (np->sc_type == 0) 863 np->sc_type = ne2000_detect(nict, nich, 864 np->sc_asict, np->sc_asich); 865 if (np->sc_type == 0) 866 return -1; 867 868 useword = np->sc_useword; 869 870 dp->cr_proto = ED_CR_RD2; 871 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 872 dp->rcr_proto = 0; 873 874 dp->test_mem = ne2000_test_mem; 875 dp->ring_copy = ne2000_ring_copy; 876 dp->write_mbuf = ne2000_write_mbuf; 877 dp->read_hdr = ne2000_read_hdr; 878 879 for (i = 0; i < 16; i++) 880 dp->sc_reg_map[i] = i; 881 882 switch (np->sc_type) { 883 case NE2000_TYPE_NE1000: 884 dp->mem_start = dp->mem_size = 8192; 885 kip->name = "ne1000"; 886 break; 887 case NE2000_TYPE_NE2000: 888 dp->mem_start = dp->mem_size = 8192 * 2; 889 kip->name = "ne2000"; 890 break; 891 case NE2000_TYPE_DL10019: 892 case NE2000_TYPE_DL10022: 893 dp->mem_start = dp->mem_size = 8192 * 3; 894 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 895 "dl10022" : "dl10019"; 896 break; 897 case NE2000_TYPE_AX88190: 898 case NE2000_TYPE_AX88790: 899 dp->rcr_proto = ED_RCR_INTT; 900 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 901 dp->mem_start = dp->mem_size = 8192 * 2; 902 kip->name = "ax88190"; 903 break; 904 } 905 906 if (dp8390_ipkdb_attach(kip)) 907 return -1; 908 909 dp->mem_ring = dp->mem_start 910 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 911 912 if (!(kip->flags & IPKDB_MYHW)) { 913 char romdata[16]; 914 915 /* Read the station address. */ 916 if (np->sc_type == NE2000_TYPE_AX88190 || 917 np->sc_type == NE2000_TYPE_AX88790) { 918 /* Select page 0 registers. */ 919 NIC_BARRIER(nict, nich); 920 bus_space_write_1(nict, nich, ED_P0_CR, 921 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 922 NIC_BARRIER(nict, nich); 923 /* Select word transfer */ 924 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 925 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 926 AX88190_NODEID_OFFSET, kip->myenetaddr, 927 ETHER_ADDR_LEN, useword); 928 } else { 929 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 930 0, romdata, sizeof romdata, useword); 931 for (i = 0; i < ETHER_ADDR_LEN; i++) 932 kip->myenetaddr[i] = romdata[i << useword]; 933 } 934 kip->flags |= IPKDB_MYHW; 935 936 } 937 dp8390_stop(dp); 938 939 return 0; 940 } 941 #endif 942
Indexes created Wed Sep 24 05:09:52 GMT 2025