1 /* $NetBSD: ne2000.c,v 1.41 2003/11/02 11:07:45 wiz 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 1.41 2003/11/02 11:07:45 wiz 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 __P((struct dp8390_softc *, struct mbuf *, int)); 102 int ne2000_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short)); 103 void ne2000_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *)); 104 int ne2000_test_mem __P((struct dp8390_softc *)); 105 106 void ne2000_writemem __P((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 __P((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 int 113 ne2000_attach(nsc, myea) 114 struct ne2000_softc *nsc; 115 u_int8_t *myea; 116 { 117 struct dp8390_softc *dsc = &nsc->sc_dp8390; 118 bus_space_tag_t nict = dsc->sc_regt; 119 bus_space_handle_t nich = dsc->sc_regh; 120 bus_space_tag_t asict = nsc->sc_asict; 121 bus_space_handle_t asich = nsc->sc_asich; 122 u_int8_t romdata[16]; 123 int memsize, i, useword; 124 125 /* 126 * Detect it again unless caller specified it; this gives us 127 * the memory size. 128 */ 129 if (nsc->sc_type == 0) { 130 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 131 if (nsc->sc_type == 0) { 132 printf("%s: where did the card go?\n", 133 dsc->sc_dev.dv_xname); 134 return (1); 135 } 136 } 137 138 useword = NE2000_USE_WORD(nsc); 139 140 dsc->cr_proto = ED_CR_RD2; 141 if (nsc->sc_type == NE2000_TYPE_AX88190 || 142 nsc->sc_type == NE2000_TYPE_AX88790) { 143 dsc->rcr_proto = ED_RCR_INTT; 144 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 145 } else 146 dsc->rcr_proto = 0; 147 148 /* 149 * DCR gets: 150 * 151 * FIFO threshold to 8, No auto-init Remote DMA, 152 * byte order=80x86. 153 * 154 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 155 */ 156 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 157 158 dsc->test_mem = ne2000_test_mem; 159 dsc->ring_copy = ne2000_ring_copy; 160 dsc->write_mbuf = ne2000_write_mbuf; 161 dsc->read_hdr = ne2000_read_hdr; 162 163 /* Registers are linear. */ 164 for (i = 0; i < 16; i++) 165 dsc->sc_reg_map[i] = i; 166 167 /* 168 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 169 * card uses DL10019. 170 */ 171 switch (nsc->sc_type) { 172 case NE2000_TYPE_NE1000: 173 memsize = 8192; 174 break; 175 case NE2000_TYPE_NE2000: 176 case NE2000_TYPE_AX88190: /* XXX really? */ 177 case NE2000_TYPE_AX88790: 178 memsize = 8192 * 2; 179 break; 180 case NE2000_TYPE_DL10019: 181 case NE2000_TYPE_DL10022: 182 memsize = 8192 * 3; 183 break; 184 default: 185 memsize = 0; 186 break; 187 } 188 189 /* 190 * NIC memory doens't start at zero on an NE board. 191 * The start address is tied to the bus width. 192 * (It happens to be computed the same way as mem size.) 193 */ 194 dsc->mem_start = memsize; 195 196 #ifdef GWETHER 197 { 198 int x, mstart = 0; 199 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 200 tbuf[ED_PAGE_SIZE]; 201 202 for (i = 0; i < ED_PAGE_SIZE; i++) 203 pbuf0[i] = 0; 204 205 /* Search for the start of RAM. */ 206 for (x = 1; x < 256; x++) { 207 ne2000_writemem(nict, nich, asict, asich, pbuf0, 208 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 209 ne2000_readmem(nict, nich, asict, asich, 210 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 211 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 212 for (i = 0; i < ED_PAGE_SIZE; i++) 213 pbuf[i] = 255 - x; 214 ne2000_writemem(nict, nich, asict, asich, 215 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 216 useword, 0); 217 ne2000_readmem(nict, nich, asict, asich, 218 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 219 useword); 220 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 221 mstart = x << ED_PAGE_SHIFT; 222 memsize = ED_PAGE_SIZE; 223 break; 224 } 225 } 226 } 227 228 if (mstart == 0) { 229 printf("%s: cannot find start of RAM\n", 230 dsc->sc_dev.dv_xname); 231 return (1); 232 } 233 234 /* Search for the end of RAM. */ 235 for (++x; x < 256; x++) { 236 ne2000_writemem(nict, nich, asict, asich, pbuf0, 237 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 238 ne2000_readmem(nict, nich, asict, asich, 239 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 240 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 241 for (i = 0; i < ED_PAGE_SIZE; i++) 242 pbuf[i] = 255 - x; 243 ne2000_writemem(nict, nich, asict, asich, 244 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 245 useword, 0); 246 ne2000_readmem(nict, nich, asict, asich, 247 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 248 useword); 249 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 250 memsize += ED_PAGE_SIZE; 251 else 252 break; 253 } else 254 break; 255 } 256 257 printf("%s: RAM start 0x%x, size %d\n", 258 dsc->sc_dev.dv_xname, mstart, memsize); 259 260 dsc->mem_start = mstart; 261 } 262 #endif /* GWETHER */ 263 264 dsc->mem_size = memsize; 265 266 if (myea == NULL) { 267 /* Read the station address. */ 268 if (nsc->sc_type == NE2000_TYPE_AX88190 || 269 nsc->sc_type == NE2000_TYPE_AX88790) { 270 /* Select page 0 registers. */ 271 NIC_BARRIER(nict, nich); 272 bus_space_write_1(nict, nich, ED_P0_CR, 273 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 274 NIC_BARRIER(nict, nich); 275 /* Select word transfer. */ 276 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 277 NIC_BARRIER(nict, nich); 278 ne2000_readmem(nict, nich, asict, asich, 279 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 280 ETHER_ADDR_LEN, useword); 281 } else { 282 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 283 sizeof(romdata), useword); 284 for (i = 0; i < ETHER_ADDR_LEN; i++) 285 dsc->sc_enaddr[i] = 286 romdata[i * (useword ? 2 : 1)]; 287 } 288 } else 289 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 290 291 /* Clear any pending interrupts that might have occurred above. */ 292 NIC_BARRIER(nict, nich); 293 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 294 NIC_BARRIER(nict, nich); 295 296 if (dsc->sc_media_init == NULL) 297 dsc->sc_media_init = dp8390_media_init; 298 299 if (dp8390_config(dsc)) { 300 printf("%s: setup failed\n", dsc->sc_dev.dv_xname); 301 return (1); 302 } 303 304 /* 305 * We need to compute mem_ring a bit differently; override the 306 * value set up in dp8390_config(). 307 */ 308 dsc->mem_ring = 309 dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 310 311 return (0); 312 } 313 314 /* 315 * Detect an NE-2000 or compatible. Returns a model code. 316 */ 317 int 318 ne2000_detect(nict, nich, asict, asich) 319 bus_space_tag_t nict; 320 bus_space_handle_t nich; 321 bus_space_tag_t asict; 322 bus_space_handle_t asich; 323 { 324 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 325 u_int8_t test_buffer[32], tmp; 326 int i, rv = 0; 327 328 /* Reset the board. */ 329 #ifdef GWETHER 330 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 331 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 332 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 333 delay(200); 334 #endif /* GWETHER */ 335 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 336 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 337 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 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 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 350 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 351 delay(5000); 352 353 /* 354 * This is needed because some NE clones apparently don't reset the 355 * NIC properly (or the NIC chip doesn't reset fully on power-up). 356 * XXX - this makes the probe invasive! Done against my better 357 * judgement. -DLG 358 */ 359 bus_space_write_1(nict, nich, ED_P0_CR, 360 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 361 NIC_BARRIER(nict, nich); 362 363 delay(5000); 364 365 /* 366 * Generic probe routine for testing for the existence of a DS8390. 367 * Must be performed after the NIC has just been reset. This 368 * works by looking at certain register values that are guaranteed 369 * to be initialized a certain way after power-up or reset. 370 * 371 * Specifically: 372 * 373 * Register reset bits set bits 374 * -------- ---------- -------- 375 * CR TXP, STA RD2, STP 376 * ISR RST 377 * IMR <all> 378 * DCR LAS 379 * TCR LB1, LB0 380 * 381 * We only look at CR and ISR, however, since looking at the others 382 * would require changing register pages, which would be intrusive 383 * if this isn't an 8390. 384 */ 385 386 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 387 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 388 (ED_CR_RD2 | ED_CR_STP)) 389 goto out; 390 391 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 392 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 393 goto out; 394 395 bus_space_write_1(nict, nich, 396 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 397 NIC_BARRIER(nict, nich); 398 399 for (i = 0; i < 100; i++) { 400 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 401 ED_ISR_RST) { 402 /* Ack the reset bit. */ 403 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 404 NIC_BARRIER(nict, nich); 405 break; 406 } 407 delay(100); 408 } 409 410 #if 0 411 /* XXX */ 412 if (i == 100) 413 goto out; 414 #endif 415 416 /* 417 * Test the ability to read and write to the NIC memory. This has 418 * the side effect of determining if this is an NE1000 or an NE2000. 419 */ 420 421 /* 422 * This prevents packets from being stored in the NIC memory when 423 * the readmem routine turns on the start bit in the CR. 424 */ 425 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 426 NIC_BARRIER(nict, nich); 427 428 /* Temporarily initialize DCR for byte operations. */ 429 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 430 431 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 432 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 433 434 /* 435 * Write a test pattern in byte mode. If this fails, then there 436 * probably isn't any memory at 8k - which likely means that the 437 * board is an NE2000. 438 */ 439 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 440 sizeof(test_pattern), 0, 1); 441 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 442 sizeof(test_buffer), 0); 443 444 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 445 /* not an NE1000 - try NE2000 */ 446 bus_space_write_1(nict, nich, ED_P0_DCR, 447 ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); 448 bus_space_write_1(nict, nich, ED_P0_PSTART, 449 16384 >> ED_PAGE_SHIFT); 450 bus_space_write_1(nict, nich, ED_P0_PSTOP, 451 32768 >> ED_PAGE_SHIFT); 452 453 /* 454 * Write the test pattern in word mode. If this also fails, 455 * then we don't know what this board is. 456 */ 457 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 458 sizeof(test_pattern), 1, 0); 459 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 460 sizeof(test_buffer), 1); 461 462 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) 463 goto out; /* not an NE2000 either */ 464 465 rv = NE2000_TYPE_NE2000; 466 } else { 467 /* We're an NE1000. */ 468 rv = NE2000_TYPE_NE1000; 469 } 470 471 /* Clear any pending interrupts that might have occurred above. */ 472 NIC_BARRIER(nict, nich); 473 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 474 475 out: 476 return (rv); 477 } 478 479 /* 480 * Write an mbuf chain to the destination NIC memory address using programmed 481 * I/O. 482 */ 483 int 484 ne2000_write_mbuf(sc, m, buf) 485 struct dp8390_softc *sc; 486 struct mbuf *m; 487 int buf; 488 { 489 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 490 bus_space_tag_t nict = sc->sc_regt; 491 bus_space_handle_t nich = sc->sc_regh; 492 bus_space_tag_t asict = nsc->sc_asict; 493 bus_space_handle_t asich = nsc->sc_asich; 494 int savelen, padlen; 495 int maxwait = 100; /* about 120us */ 496 497 savelen = m->m_pkthdr.len; 498 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 499 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 500 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 501 } else 502 padlen = 0; 503 504 505 /* Select page 0 registers. */ 506 NIC_BARRIER(nict, nich); 507 bus_space_write_1(nict, nich, ED_P0_CR, 508 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 509 NIC_BARRIER(nict, nich); 510 511 /* Reset remote DMA complete flag. */ 512 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 513 NIC_BARRIER(nict, nich); 514 515 /* Set up DMA byte count. */ 516 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 517 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 518 519 /* Set up destination address in NIC mem. */ 520 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 521 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 522 523 /* Set remote DMA write. */ 524 NIC_BARRIER(nict, nich); 525 bus_space_write_1(nict, nich, 526 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 527 NIC_BARRIER(nict, nich); 528 529 /* 530 * Transfer the mbuf chain to the NIC memory. NE2000 cards 531 * require that data be transferred as words, and only words, 532 * so that case requires some extra code to patch over odd-length 533 * mbufs. 534 */ 535 if (nsc->sc_type == NE2000_TYPE_NE1000) { 536 /* NE1000s are easy. */ 537 for (; m != 0; m = m->m_next) { 538 if (m->m_len) { 539 bus_space_write_multi_1(asict, asich, 540 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 541 m->m_len); 542 } 543 } 544 if (padlen) { 545 for(; padlen > 0; padlen--) 546 bus_space_write_1(asict, asich, 547 NE2000_ASIC_DATA, 0); 548 } 549 } else { 550 /* NE2000s are a bit trickier. */ 551 u_int8_t *data, savebyte[2]; 552 int l, leftover; 553 #ifdef DIAGNOSTIC 554 u_int8_t *lim; 555 #endif 556 /* Start out with no leftover data. */ 557 leftover = 0; 558 savebyte[0] = savebyte[1] = 0; 559 560 for (; m != 0; m = m->m_next) { 561 l = m->m_len; 562 if (l == 0) 563 continue; 564 data = mtod(m, u_int8_t *); 565 #ifdef DIAGNOSTIC 566 lim = data + l; 567 #endif 568 while (l > 0) { 569 if (leftover) { 570 /* 571 * Data left over (from mbuf or 572 * realignment). Buffer the next 573 * byte, and write it and the 574 * leftover data out. 575 */ 576 savebyte[1] = *data++; 577 l--; 578 bus_space_write_stream_2(asict, asich, 579 NE2000_ASIC_DATA, 580 *(u_int16_t *)savebyte); 581 leftover = 0; 582 } else if (BUS_SPACE_ALIGNED_POINTER(data, 583 u_int16_t) == 0) { 584 /* 585 * Unaligned data; buffer the next 586 * byte. 587 */ 588 savebyte[0] = *data++; 589 l--; 590 leftover = 1; 591 } else { 592 /* 593 * Aligned data; output contiguous 594 * words as much as we can, then 595 * buffer the remaining byte, if any. 596 */ 597 leftover = l & 1; 598 l &= ~1; 599 bus_space_write_multi_stream_2(asict, 600 asich, NE2000_ASIC_DATA, 601 (u_int16_t *)data, l >> 1); 602 data += l; 603 if (leftover) 604 savebyte[0] = *data++; 605 l = 0; 606 } 607 } 608 if (l < 0) 609 panic("ne2000_write_mbuf: negative len"); 610 #ifdef DIAGNOSTIC 611 if (data != lim) 612 panic("ne2000_write_mbuf: data != lim"); 613 #endif 614 } 615 if (leftover) { 616 savebyte[1] = 0; 617 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 618 *(u_int16_t *)savebyte); 619 } 620 if (padlen) { 621 for(; padlen > 0; padlen -= 2) 622 bus_space_write_stream_2(asict, asich, 623 NE2000_ASIC_DATA, 0); 624 } 625 } 626 NIC_BARRIER(nict, nich); 627 628 /* 629 * Wait for remote DMA to complete. This is necessary because on the 630 * transmit side, data is handled internally by the NIC in bursts, and 631 * we can't start another remote DMA until this one completes. Not 632 * waiting causes really bad things to happen - like the NIC wedging 633 * the bus. 634 */ 635 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 636 ED_ISR_RDC) && --maxwait) { 637 bus_space_read_1(nict, nich, ED_P0_CRDA1); 638 bus_space_read_1(nict, nich, ED_P0_CRDA0); 639 NIC_BARRIER(nict, nich); 640 DELAY(1); 641 } 642 643 if (maxwait == 0) { 644 log(LOG_WARNING, 645 "%s: remote transmit DMA failed to complete\n", 646 sc->sc_dev.dv_xname); 647 dp8390_reset(sc); 648 } 649 650 return (savelen); 651 } 652 653 /* 654 * Given a source and destination address, copy 'amout' of a packet from 655 * the ring buffer into a linear destination buffer. Takes into account 656 * ring-wrap. 657 */ 658 int 659 ne2000_ring_copy(sc, src, dst, amount) 660 struct dp8390_softc *sc; 661 int src; 662 caddr_t dst; 663 u_short amount; 664 { 665 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 666 bus_space_tag_t nict = sc->sc_regt; 667 bus_space_handle_t nich = sc->sc_regh; 668 bus_space_tag_t asict = nsc->sc_asict; 669 bus_space_handle_t asich = nsc->sc_asich; 670 u_short tmp_amount; 671 int useword = NE2000_USE_WORD(nsc); 672 673 /* Does copy wrap to lower addr in ring buffer? */ 674 if (src + amount > sc->mem_end) { 675 tmp_amount = sc->mem_end - src; 676 677 /* Copy amount up to end of NIC memory. */ 678 ne2000_readmem(nict, nich, asict, asich, src, 679 (u_int8_t *)dst, tmp_amount, useword); 680 681 amount -= tmp_amount; 682 src = sc->mem_ring; 683 dst += tmp_amount; 684 } 685 686 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 687 amount, useword); 688 689 return (src + amount); 690 } 691 692 void 693 ne2000_read_hdr(sc, buf, hdr) 694 struct dp8390_softc *sc; 695 int buf; 696 struct dp8390_ring *hdr; 697 { 698 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 699 700 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 701 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 702 NE2000_USE_WORD(nsc)); 703 #if BYTE_ORDER == BIG_ENDIAN 704 hdr->count = bswap16(hdr->count); 705 #endif 706 } 707 708 int 709 ne2000_test_mem(sc) 710 struct dp8390_softc *sc; 711 { 712 713 /* Noop. */ 714 return (0); 715 } 716 717 /* 718 * Given a NIC memory source address and a host memory destination address, 719 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 720 * rounded up to a word - ok as long as mbufs are word sized. 721 */ 722 void 723 ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword) 724 bus_space_tag_t nict; 725 bus_space_handle_t nich; 726 bus_space_tag_t asict; 727 bus_space_handle_t asich; 728 int src; 729 u_int8_t *dst; 730 size_t amount; 731 int useword; 732 { 733 734 /* Select page 0 registers. */ 735 NIC_BARRIER(nict, nich); 736 bus_space_write_1(nict, nich, ED_P0_CR, 737 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 738 NIC_BARRIER(nict, nich); 739 740 /* Round up to a word. */ 741 if (amount & 1) 742 ++amount; 743 744 /* Set up DMA byte count. */ 745 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 746 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 747 748 /* Set up source address in NIC mem. */ 749 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 750 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 751 752 NIC_BARRIER(nict, nich); 753 bus_space_write_1(nict, nich, ED_P0_CR, 754 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 755 756 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 757 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 758 if (useword) 759 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 760 (u_int16_t *)dst, amount >> 1); 761 else 762 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 763 dst, amount); 764 } 765 766 /* 767 * Stripped down routine for writing a linear buffer to NIC memory. Only 768 * used in the probe routine to test the memory. 'len' must be even. 769 */ 770 void 771 ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword, quiet) 772 bus_space_tag_t nict; 773 bus_space_handle_t nich; 774 bus_space_tag_t asict; 775 bus_space_handle_t asich; 776 u_int8_t *src; 777 int dst; 778 size_t len; 779 int useword; 780 int quiet; 781 { 782 int maxwait = 100; /* about 120us */ 783 784 /* Select page 0 registers. */ 785 NIC_BARRIER(nict, nich); 786 bus_space_write_1(nict, nich, ED_P0_CR, 787 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 788 NIC_BARRIER(nict, nich); 789 790 /* Reset remote DMA complete flag. */ 791 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 792 NIC_BARRIER(nict, nich); 793 794 /* Set up DMA byte count. */ 795 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 796 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 797 798 /* Set up destination address in NIC mem. */ 799 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 800 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 801 802 /* Set remote DMA write. */ 803 NIC_BARRIER(nict, nich); 804 bus_space_write_1(nict, nich, ED_P0_CR, 805 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 806 807 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 808 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 809 if (useword) 810 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 811 (u_int16_t *)src, len >> 1); 812 else 813 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 814 src, len); 815 816 /* 817 * Wait for remote DMA to complete. This is necessary because on the 818 * transmit side, data is handled internally by the NIC in bursts, and 819 * we can't start another remote DMA until this one completes. Not 820 * waiting causes really bad things to happen - like the NIC wedging 821 * the bus. 822 */ 823 bus_space_barrier(nict, nich, 0, NE2000_NPORTS, 824 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 825 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 826 ED_ISR_RDC) && --maxwait) 827 DELAY(1); 828 829 if (!quiet && maxwait == 0) 830 printf("ne2000_writemem: failed to complete\n"); 831 } 832 833 int 834 ne2000_detach(sc, flags) 835 struct ne2000_softc *sc; 836 int flags; 837 { 838 839 return (dp8390_detach(&sc->sc_dp8390, flags)); 840 } 841 842 #ifdef IPKDB_NE 843 /* 844 * This code is essentially the same as ne2000_attach above. 845 */ 846 int 847 ne2000_ipkdb_attach(kip) 848 struct ipkdb_if *kip; 849 { 850 struct ne2000_softc *np = kip->port; 851 struct dp8390_softc *dp = &np->sc_dp8390; 852 bus_space_tag_t nict = dp->sc_regt; 853 bus_space_handle_t nich = dp->sc_regh; 854 int i, useword; 855 856 #ifdef GWETHER 857 /* Not supported (yet?) */ 858 return -1; 859 #endif 860 861 if (np->sc_type == 0) 862 np->sc_type = ne2000_detect(nict, nich, 863 np->sc_asict, np->sc_asich); 864 if (np->sc_type == 0) 865 return -1; 866 867 useword = NE2000_USE_WORD(np); 868 869 dp->cr_proto = ED_CR_RD2; 870 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 871 dp->rcr_proto = 0; 872 873 dp->test_mem = ne2000_test_mem; 874 dp->ring_copy = ne2000_ring_copy; 875 dp->write_mbuf = ne2000_write_mbuf; 876 dp->read_hdr = ne2000_read_hdr; 877 878 for (i = 0; i < 16; i++) 879 dp->sc_reg_map[i] = i; 880 881 switch (np->sc_type) { 882 case NE2000_TYPE_NE1000: 883 dp->mem_start = dp->mem_size = 8192; 884 kip->name = "ne1000"; 885 break; 886 case NE2000_TYPE_NE2000: 887 dp->mem_start = dp->mem_size = 8192 * 2; 888 kip->name = "ne2000"; 889 break; 890 case NE2000_TYPE_DL10019: 891 case NE2000_TYPE_DL10022: 892 dp->mem_start = dp->mem_size = 8192 * 3; 893 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 894 "dl10022" : "dl10019"; 895 break; 896 case NE2000_TYPE_AX88190: 897 case NE2000_TYPE_AX88790: 898 dp->rcr_proto = ED_RCR_INTT; 899 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 900 dp->mem_start = dp->mem_size = 8192 * 2; 901 kip->name = "ax88190"; 902 break; 903 } 904 905 if (dp8390_ipkdb_attach(kip)) 906 return -1; 907 908 dp->mem_ring = dp->mem_start 909 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 910 911 if (!(kip->flags & IPKDB_MYHW)) { 912 char romdata[16]; 913 914 /* Read the station address. */ 915 if (np->sc_type == NE2000_TYPE_AX88190 || 916 np->sc_type == NE2000_TYPE_AX88790) { 917 /* Select page 0 registers. */ 918 NIC_BARRIER(nict, nich); 919 bus_space_write_1(nict, nich, ED_P0_CR, 920 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 921 NIC_BARRIER(nict, nich); 922 /* Select word transfer */ 923 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_WTS); 924 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 925 AX88190_NODEID_OFFSET, kip->myenetaddr, 926 ETHER_ADDR_LEN, useword); 927 } else { 928 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 929 0, romdata, sizeof romdata, useword); 930 useword = useword ? 2 : 1; 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