ne2000.c revision 1.35.2.1
1 /* $NetBSD: ne2000.c,v 1.35.2.1 2001/08/25 06:16:16 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet 42 * adapters. 43 * 44 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. 45 * 46 * Copyright (C) 1993, David Greenman. This software may be used, modified, 47 * copied, distributed, and sold, in both source and binary form provided that 48 * the above copyright and these terms are retained. Under no circumstances is 49 * the author responsible for the proper functioning of this software, nor does 50 * the author assume any responsibility for damages incurred with its use. 51 */ 52 53 /* 54 * Common code shared by all NE2000-compatible Ethernet interfaces. 55 */ 56 57 #include "opt_ipkdb.h" 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/device.h> 62 #include <sys/socket.h> 63 #include <sys/mbuf.h> 64 #include <sys/syslog.h> 65 66 #include <net/if.h> 67 #include <net/if_dl.h> 68 #include <net/if_types.h> 69 #include <net/if_media.h> 70 71 #include <net/if_ether.h> 72 73 #include <machine/bswap.h> 74 #include <machine/bus.h> 75 76 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 77 #define bus_space_write_stream_2 bus_space_write_2 78 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 79 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 80 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 81 82 #ifdef IPKDB_NE 83 #include <ipkdb/ipkdb.h> 84 #endif 85 86 #include <dev/ic/dp8390reg.h> 87 #include <dev/ic/dp8390var.h> 88 89 #include <dev/ic/ne2000reg.h> 90 #include <dev/ic/ne2000var.h> 91 92 #include <dev/ic/ax88190reg.h> 93 94 #if BYTE_ORDER == BIG_ENDIAN 95 #include <machine/bswap.h> 96 #endif 97 98 int ne2000_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int)); 99 int ne2000_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short)); 100 void ne2000_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *)); 101 int ne2000_test_mem __P((struct dp8390_softc *)); 102 103 void ne2000_writemem __P((bus_space_tag_t, bus_space_handle_t, 104 bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t, 105 int, int)); 106 void ne2000_readmem __P((bus_space_tag_t, bus_space_handle_t, 107 bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int)); 108 109 int 110 ne2000_attach(nsc, myea) 111 struct ne2000_softc *nsc; 112 u_int8_t *myea; 113 { 114 struct dp8390_softc *dsc = &nsc->sc_dp8390; 115 bus_space_tag_t nict = dsc->sc_regt; 116 bus_space_handle_t nich = dsc->sc_regh; 117 bus_space_tag_t asict = nsc->sc_asict; 118 bus_space_handle_t asich = nsc->sc_asich; 119 u_int8_t romdata[16]; 120 int memsize, i, useword; 121 122 /* 123 * Detect it again unless caller specified it; this gives us 124 * the memory size. 125 */ 126 if (nsc->sc_type == 0) { 127 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 128 if (nsc->sc_type == 0) { 129 printf("%s: where did the card go?\n", 130 dsc->sc_dev.dv_xname); 131 return (1); 132 } 133 } 134 135 useword = NE2000_USE_WORD(nsc); 136 137 dsc->cr_proto = ED_CR_RD2; 138 if (nsc->sc_type == NE2000_TYPE_AX88190) { 139 dsc->rcr_proto = ED_RCR_INTT; 140 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 141 } else 142 dsc->rcr_proto = 0; 143 144 /* 145 * DCR gets: 146 * 147 * FIFO threshold to 8, No auto-init Remote DMA, 148 * byte order=80x86. 149 * 150 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 151 */ 152 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 153 154 dsc->test_mem = ne2000_test_mem; 155 dsc->ring_copy = ne2000_ring_copy; 156 dsc->write_mbuf = ne2000_write_mbuf; 157 dsc->read_hdr = ne2000_read_hdr; 158 159 /* Registers are linear. */ 160 for (i = 0; i < 16; i++) 161 dsc->sc_reg_map[i] = i; 162 163 /* 164 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 165 * card uses DL10019. 166 */ 167 switch (nsc->sc_type) { 168 case NE2000_TYPE_NE1000: 169 memsize = 8192; 170 break; 171 case NE2000_TYPE_NE2000: 172 case NE2000_TYPE_AX88190: /* XXX really? */ 173 memsize = 8192 * 2; 174 break; 175 case NE2000_TYPE_DL10019: 176 case NE2000_TYPE_DL10022: 177 memsize = 8192 * 3; 178 break; 179 } 180 181 /* 182 * NIC memory doens't start at zero on an NE board. 183 * The start address is tied to the bus width. 184 * (It happens to be computed the same way as mem size.) 185 */ 186 dsc->mem_start = memsize; 187 188 #ifdef GWETHER 189 { 190 int x, mstart = 0; 191 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 192 tbuf[ED_PAGE_SIZE]; 193 194 for (i = 0; i < ED_PAGE_SIZE; i++) 195 pbuf0[i] = 0; 196 197 /* Search for the start of RAM. */ 198 for (x = 1; x < 256; x++) { 199 ne2000_writemem(nict, nich, asict, asich, pbuf0, 200 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 201 ne2000_readmem(nict, nich, asict, asich, 202 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 203 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 204 for (i = 0; i < ED_PAGE_SIZE; i++) 205 pbuf[i] = 255 - x; 206 ne2000_writemem(nict, nich, asict, asich, 207 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 208 useword, 0); 209 ne2000_readmem(nict, nich, asict, asich, 210 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 211 useword); 212 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 213 mstart = x << ED_PAGE_SHIFT; 214 memsize = ED_PAGE_SIZE; 215 break; 216 } 217 } 218 } 219 220 if (mstart == 0) { 221 printf("%s: cannot find start of RAM\n", 222 dsc->sc_dev.dv_xname); 223 return (1); 224 } 225 226 /* Search for the end of RAM. */ 227 for (++x; x < 256; x++) { 228 ne2000_writemem(nict, nich, asict, asich, pbuf0, 229 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 230 ne2000_readmem(nict, nich, asict, asich, 231 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 232 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 233 for (i = 0; i < ED_PAGE_SIZE; i++) 234 pbuf[i] = 255 - x; 235 ne2000_writemem(nict, nich, asict, asich, 236 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 237 useword, 0); 238 ne2000_readmem(nict, nich, asict, asich, 239 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 240 useword); 241 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 242 memsize += ED_PAGE_SIZE; 243 else 244 break; 245 } else 246 break; 247 } 248 249 printf("%s: RAM start 0x%x, size %d\n", 250 dsc->sc_dev.dv_xname, mstart, memsize); 251 252 dsc->mem_start = mstart; 253 } 254 #endif /* GWETHER */ 255 256 dsc->mem_size = memsize; 257 258 if (myea == NULL) { 259 /* Read the station address. */ 260 if (nsc->sc_type == NE2000_TYPE_AX88190) { 261 /* Select page 0 registers. */ 262 NIC_BARRIER(nict, nich); 263 bus_space_write_1(nict, nich, ED_P0_CR, 264 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 265 NIC_BARRIER(nict, nich); 266 /* Select word transfer. */ 267 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 268 NIC_BARRIER(nict, nich); 269 ne2000_readmem(nict, nich, asict, asich, 270 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 271 ETHER_ADDR_LEN, useword); 272 } else { 273 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 274 sizeof(romdata), useword); 275 for (i = 0; i < ETHER_ADDR_LEN; i++) 276 dsc->sc_enaddr[i] = 277 romdata[i * (useword ? 2 : 1)]; 278 } 279 } else 280 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 281 282 /* Clear any pending interrupts that might have occurred above. */ 283 NIC_BARRIER(nict, nich); 284 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 285 NIC_BARRIER(nict, nich); 286 287 if (dsc->sc_media_init == NULL) 288 dsc->sc_media_init = dp8390_media_init; 289 290 if (dp8390_config(dsc)) { 291 printf("%s: setup failed\n", dsc->sc_dev.dv_xname); 292 return (1); 293 } 294 295 /* 296 * We need to compute mem_ring a bit differently; override the 297 * value set up in dp8390_config(). 298 */ 299 dsc->mem_ring = 300 dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 301 302 return (0); 303 } 304 305 /* 306 * Detect an NE-2000 or compatible. Returns a model code. 307 */ 308 int 309 ne2000_detect(nict, nich, asict, asich) 310 bus_space_tag_t nict; 311 bus_space_handle_t nich; 312 bus_space_tag_t asict; 313 bus_space_handle_t asich; 314 { 315 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 316 u_int8_t test_buffer[32], tmp; 317 int i, rv = 0; 318 319 /* Reset the board. */ 320 #ifdef GWETHER 321 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 322 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 323 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 324 delay(200); 325 #endif /* GWETHER */ 326 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 327 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 328 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 329 delay(10000); 330 331 /* 332 * I don't know if this is necessary; probably cruft leftover from 333 * Clarkson packet driver code. Doesn't do a thing on the boards I've 334 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 335 * non-invasive...but some boards don't seem to reset and I don't have 336 * complete documentation on what the 'right' thing to do is...so we do 337 * the invasive thing for now. Yuck.] 338 */ 339 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 340 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 341 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 342 delay(5000); 343 344 /* 345 * This is needed because some NE clones apparently don't reset the 346 * NIC properly (or the NIC chip doesn't reset fully on power-up). 347 * XXX - this makes the probe invasive! Done against my better 348 * judgement. -DLG 349 */ 350 bus_space_write_1(nict, nich, ED_P0_CR, 351 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 352 NIC_BARRIER(nict, nich); 353 354 delay(5000); 355 356 /* 357 * Generic probe routine for testing for the existance of a DS8390. 358 * Must be performed after the NIC has just been reset. This 359 * works by looking at certain register values that are guaranteed 360 * to be initialized a certain way after power-up or reset. 361 * 362 * Specifically: 363 * 364 * Register reset bits set bits 365 * -------- ---------- -------- 366 * CR TXP, STA RD2, STP 367 * ISR RST 368 * IMR <all> 369 * DCR LAS 370 * TCR LB1, LB0 371 * 372 * We only look at CR and ISR, however, since looking at the others 373 * would require changing register pages, which would be intrusive 374 * if this isn't an 8390. 375 */ 376 377 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 378 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 379 (ED_CR_RD2 | ED_CR_STP)) 380 goto out; 381 382 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 383 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 384 goto out; 385 386 bus_space_write_1(nict, nich, 387 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 388 NIC_BARRIER(nict, nich); 389 390 for (i = 0; i < 100; i++) { 391 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 392 ED_ISR_RST) { 393 /* Ack the reset bit. */ 394 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 395 NIC_BARRIER(nict, nich); 396 break; 397 } 398 delay(100); 399 } 400 401 #if 0 402 /* XXX */ 403 if (i == 100) 404 goto out; 405 #endif 406 407 /* 408 * Test the ability to read and write to the NIC memory. This has 409 * the side effect of determining if this is an NE1000 or an NE2000. 410 */ 411 412 /* 413 * This prevents packets from being stored in the NIC memory when 414 * the readmem routine turns on the start bit in the CR. 415 */ 416 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 417 NIC_BARRIER(nict, nich); 418 419 /* Temporarily initialize DCR for byte operations. */ 420 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 421 422 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 423 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 424 425 /* 426 * Write a test pattern in byte mode. If this fails, then there 427 * probably isn't any memory at 8k - which likely means that the 428 * board is an NE2000. 429 */ 430 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 431 sizeof(test_pattern), 0, 1); 432 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 433 sizeof(test_buffer), 0); 434 435 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 436 /* not an NE1000 - try NE2000 */ 437 bus_space_write_1(nict, nich, ED_P0_DCR, 438 ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); 439 bus_space_write_1(nict, nich, ED_P0_PSTART, 440 16384 >> ED_PAGE_SHIFT); 441 bus_space_write_1(nict, nich, ED_P0_PSTOP, 442 32768 >> ED_PAGE_SHIFT); 443 444 /* 445 * Write the test pattern in word mode. If this also fails, 446 * then we don't know what this board is. 447 */ 448 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 449 sizeof(test_pattern), 1, 0); 450 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 451 sizeof(test_buffer), 1); 452 453 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) 454 goto out; /* not an NE2000 either */ 455 456 rv = NE2000_TYPE_NE2000; 457 } else { 458 /* We're an NE1000. */ 459 rv = NE2000_TYPE_NE1000; 460 } 461 462 /* Clear any pending interrupts that might have occurred above. */ 463 NIC_BARRIER(nict, nich); 464 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 465 466 out: 467 return (rv); 468 } 469 470 /* 471 * Write an mbuf chain to the destination NIC memory address using programmed 472 * I/O. 473 */ 474 int 475 ne2000_write_mbuf(sc, m, buf) 476 struct dp8390_softc *sc; 477 struct mbuf *m; 478 int buf; 479 { 480 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 481 bus_space_tag_t nict = sc->sc_regt; 482 bus_space_handle_t nich = sc->sc_regh; 483 bus_space_tag_t asict = nsc->sc_asict; 484 bus_space_handle_t asich = nsc->sc_asich; 485 int savelen; 486 int maxwait = 100; /* about 120us */ 487 488 savelen = m->m_pkthdr.len; 489 490 /* Select page 0 registers. */ 491 NIC_BARRIER(nict, nich); 492 bus_space_write_1(nict, nich, ED_P0_CR, 493 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 494 NIC_BARRIER(nict, nich); 495 496 /* Reset remote DMA complete flag. */ 497 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 498 NIC_BARRIER(nict, nich); 499 500 /* Set up DMA byte count. */ 501 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 502 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 503 504 /* Set up destination address in NIC mem. */ 505 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 506 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 507 508 /* Set remote DMA write. */ 509 NIC_BARRIER(nict, nich); 510 bus_space_write_1(nict, nich, 511 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 512 NIC_BARRIER(nict, nich); 513 514 /* 515 * Transfer the mbuf chain to the NIC memory. NE2000 cards 516 * require that data be transferred as words, and only words, 517 * so that case requires some extra code to patch over odd-length 518 * mbufs. 519 */ 520 if (nsc->sc_type == NE2000_TYPE_NE1000) { 521 /* NE1000s are easy. */ 522 for (; m != 0; m = m->m_next) { 523 if (m->m_len) { 524 bus_space_write_multi_1(asict, asich, 525 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 526 m->m_len); 527 } 528 } 529 } else { 530 /* NE2000s are a bit trickier. */ 531 u_int8_t *data, savebyte[2]; 532 int l, leftover; 533 #ifdef DIAGNOSTIC 534 u_int8_t *lim; 535 #endif 536 /* Start out with no leftover data. */ 537 leftover = 0; 538 savebyte[0] = savebyte[1] = 0; 539 540 for (; m != 0; m = m->m_next) { 541 l = m->m_len; 542 if (l == 0) 543 continue; 544 data = mtod(m, u_int8_t *); 545 #ifdef DIAGNOSTIC 546 lim = data + l; 547 #endif 548 while (l > 0) { 549 if (leftover) { 550 /* 551 * Data left over (from mbuf or 552 * realignment). Buffer the next 553 * byte, and write it and the 554 * leftover data out. 555 */ 556 savebyte[1] = *data++; 557 l--; 558 bus_space_write_stream_2(asict, asich, 559 NE2000_ASIC_DATA, 560 *(u_int16_t *)savebyte); 561 leftover = 0; 562 } else if (BUS_SPACE_ALIGNED_POINTER(data, 563 u_int16_t) == 0) { 564 /* 565 * Unaligned data; buffer the next 566 * byte. 567 */ 568 savebyte[0] = *data++; 569 l--; 570 leftover = 1; 571 } else { 572 /* 573 * Aligned data; output contiguous 574 * words as much as we can, then 575 * buffer the remaining byte, if any. 576 */ 577 leftover = l & 1; 578 l &= ~1; 579 bus_space_write_multi_stream_2(asict, 580 asich, NE2000_ASIC_DATA, 581 (u_int16_t *)data, l >> 1); 582 data += l; 583 if (leftover) 584 savebyte[0] = *data++; 585 l = 0; 586 } 587 } 588 if (l < 0) 589 panic("ne2000_write_mbuf: negative len"); 590 #ifdef DIAGNOSTIC 591 if (data != lim) 592 panic("ne2000_write_mbuf: data != lim"); 593 #endif 594 } 595 if (leftover) { 596 savebyte[1] = 0; 597 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 598 *(u_int16_t *)savebyte); 599 } 600 } 601 NIC_BARRIER(nict, nich); 602 603 /* 604 * Wait for remote DMA to complete. This is necessary because on the 605 * transmit side, data is handled internally by the NIC in bursts, and 606 * we can't start another remote DMA until this one completes. Not 607 * waiting causes really bad things to happen - like the NIC wedging 608 * the bus. 609 */ 610 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 611 ED_ISR_RDC) && --maxwait) { 612 bus_space_read_1(nict, nich, ED_P0_CRDA1); 613 bus_space_read_1(nict, nich, ED_P0_CRDA0); 614 NIC_BARRIER(nict, nich); 615 DELAY(1); 616 } 617 618 if (maxwait == 0) { 619 log(LOG_WARNING, 620 "%s: remote transmit DMA failed to complete\n", 621 sc->sc_dev.dv_xname); 622 dp8390_reset(sc); 623 } 624 625 return (savelen); 626 } 627 628 /* 629 * Given a source and destination address, copy 'amout' of a packet from 630 * the ring buffer into a linear destination buffer. Takes into account 631 * ring-wrap. 632 */ 633 int 634 ne2000_ring_copy(sc, src, dst, amount) 635 struct dp8390_softc *sc; 636 int src; 637 caddr_t dst; 638 u_short amount; 639 { 640 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 641 bus_space_tag_t nict = sc->sc_regt; 642 bus_space_handle_t nich = sc->sc_regh; 643 bus_space_tag_t asict = nsc->sc_asict; 644 bus_space_handle_t asich = nsc->sc_asich; 645 u_short tmp_amount; 646 int useword = NE2000_USE_WORD(nsc); 647 648 /* Does copy wrap to lower addr in ring buffer? */ 649 if (src + amount > sc->mem_end) { 650 tmp_amount = sc->mem_end - src; 651 652 /* Copy amount up to end of NIC memory. */ 653 ne2000_readmem(nict, nich, asict, asich, src, 654 (u_int8_t *)dst, tmp_amount, useword); 655 656 amount -= tmp_amount; 657 src = sc->mem_ring; 658 dst += tmp_amount; 659 } 660 661 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 662 amount, useword); 663 664 return (src + amount); 665 } 666 667 void 668 ne2000_read_hdr(sc, buf, hdr) 669 struct dp8390_softc *sc; 670 int buf; 671 struct dp8390_ring *hdr; 672 { 673 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 674 675 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 676 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 677 NE2000_USE_WORD(nsc)); 678 #if BYTE_ORDER == BIG_ENDIAN 679 hdr->count = bswap16(hdr->count); 680 #endif 681 } 682 683 int 684 ne2000_test_mem(sc) 685 struct dp8390_softc *sc; 686 { 687 688 /* Noop. */ 689 return (0); 690 } 691 692 /* 693 * Given a NIC memory source address and a host memory destination address, 694 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 695 * rounded up to a word - ok as long as mbufs are word sized. 696 */ 697 void 698 ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword) 699 bus_space_tag_t nict; 700 bus_space_handle_t nich; 701 bus_space_tag_t asict; 702 bus_space_handle_t asich; 703 int src; 704 u_int8_t *dst; 705 size_t amount; 706 int useword; 707 { 708 709 /* Select page 0 registers. */ 710 NIC_BARRIER(nict, nich); 711 bus_space_write_1(nict, nich, ED_P0_CR, 712 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 713 NIC_BARRIER(nict, nich); 714 715 /* Round up to a word. */ 716 if (amount & 1) 717 ++amount; 718 719 /* Set up DMA byte count. */ 720 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 721 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 722 723 /* Set up source address in NIC mem. */ 724 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 725 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 726 727 NIC_BARRIER(nict, nich); 728 bus_space_write_1(nict, nich, ED_P0_CR, 729 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 730 731 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 732 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 733 if (useword) 734 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 735 (u_int16_t *)dst, amount >> 1); 736 else 737 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 738 dst, amount); 739 } 740 741 /* 742 * Stripped down routine for writing a linear buffer to NIC memory. Only 743 * used in the probe routine to test the memory. 'len' must be even. 744 */ 745 void 746 ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword, quiet) 747 bus_space_tag_t nict; 748 bus_space_handle_t nich; 749 bus_space_tag_t asict; 750 bus_space_handle_t asich; 751 u_int8_t *src; 752 int dst; 753 size_t len; 754 int useword; 755 int quiet; 756 { 757 int maxwait = 100; /* about 120us */ 758 759 /* Select page 0 registers. */ 760 NIC_BARRIER(nict, nich); 761 bus_space_write_1(nict, nich, ED_P0_CR, 762 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 763 NIC_BARRIER(nict, nich); 764 765 /* Reset remote DMA complete flag. */ 766 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 767 NIC_BARRIER(nict, nich); 768 769 /* Set up DMA byte count. */ 770 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 771 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 772 773 /* Set up destination address in NIC mem. */ 774 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 775 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 776 777 /* Set remote DMA write. */ 778 NIC_BARRIER(nict, nich); 779 bus_space_write_1(nict, nich, ED_P0_CR, 780 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 781 782 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 783 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 784 if (useword) 785 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 786 (u_int16_t *)src, len >> 1); 787 else 788 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 789 src, len); 790 791 /* 792 * Wait for remote DMA to complete. This is necessary because on the 793 * transmit side, data is handled internally by the NIC in bursts, and 794 * we can't start another remote DMA until this one completes. Not 795 * waiting causes really bad things to happen - like the NIC wedging 796 * the bus. 797 */ 798 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 799 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 800 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 801 ED_ISR_RDC) && --maxwait) 802 DELAY(1); 803 804 if (!quiet && maxwait == 0) 805 printf("ne2000_writemem: failed to complete\n"); 806 } 807 808 int 809 ne2000_detach(sc, flags) 810 struct ne2000_softc *sc; 811 int flags; 812 { 813 814 return (dp8390_detach(&sc->sc_dp8390, flags)); 815 } 816 817 #ifdef IPKDB_NE 818 /* 819 * This code is essentially the same as ne2000_attach above. 820 */ 821 int 822 ne2000_ipkdb_attach(kip) 823 struct ipkdb_if *kip; 824 { 825 struct ne2000_softc *np = kip->port; 826 struct dp8390_softc *dp = &np->sc_dp8390; 827 bus_space_tag_t nict = dp->sc_regt; 828 bus_space_handle_t nich = dp->sc_regh; 829 int i, useword; 830 831 #ifdef GWETHER 832 /* Not supported (yet?) */ 833 return -1; 834 #endif 835 836 if (np->sc_type == 0) 837 np->sc_type = ne2000_detect(nict, nich, 838 np->sc_asict, np->sc_asich); 839 if (np->sc_type == 0) 840 return -1; 841 842 useword = NE2000_USE_WORD(np); 843 844 dp->cr_proto = ED_CR_RD2; 845 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 846 dp->rcr_proto = 0; 847 848 dp->test_mem = ne2000_test_mem; 849 dp->ring_copy = ne2000_ring_copy; 850 dp->write_mbuf = ne2000_write_mbuf; 851 dp->read_hdr = ne2000_read_hdr; 852 853 for (i = 0; i < 16; i++) 854 dp->sc_reg_map[i] = i; 855 856 switch (np->sc_type) { 857 case NE2000_TYPE_NE1000: 858 dp->mem_start = dp->mem_size = 8192; 859 kip->name = "ne1000"; 860 break; 861 case NE2000_TYPE_NE2000: 862 dp->mem_start = dp->mem_size = 8192 * 2; 863 kip->name = "ne2000"; 864 break; 865 case NE2000_TYPE_DL10019: 866 case NE2000_TYPE_DL10022: 867 dp->mem_start = dp->mem_size = 8192 * 3; 868 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 869 "dl10022" : "dl10019"; 870 break; 871 case NE2000_TYPE_AX88190: 872 dp->rcr_proto = ED_RCR_INTT; 873 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 874 dp->mem_start = dp->mem_size = 8192 * 2; 875 kip->name = "ax88190"; 876 break; 877 } 878 879 if (dp8390_ipkdb_attach(kip)) 880 return -1; 881 882 dp->mem_ring = dp->mem_start 883 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 884 885 if (!(kip->flags & IPKDB_MYHW)) { 886 char romdata[16]; 887 888 /* Read the station address. */ 889 if (np->sc_type == NE2000_TYPE_AX88190) { 890 /* Select page 0 registers. */ 891 NIC_BARRIER(nict, nich); 892 bus_space_write_1(nict, nich, ED_P0_CR, 893 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 894 NIC_BARRIER(nict, nich); 895 /* Select word transfer */ 896 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 897 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 898 AX88190_NODEID_OFFSET, kip->myenetaddr, 899 ETHER_ADDR_LEN, useword); 900 } else { 901 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 902 0, romdata, sizeof romdata, useword); 903 useword = useword ? 2 : 1; 904 for (i = 0; i < ETHER_ADDR_LEN; i++) 905 kip->myenetaddr[i] = romdata[i * useword]; 906 } 907 kip->flags |= IPKDB_MYHW; 908 909 } 910 dp8390_stop(dp); 911 912 return 0; 913 } 914 #endif 915
Indexes created Sat Oct 25 01:09:55 GMT 2025