ne2000.c revision 1.64
1 /* $NetBSD: ne2000.c,v 1.64 2010/01/08 20:02:39 dyoung 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 1.64 2010/01/08 20:02:39 dyoung 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(struct ne2000_softc *nsc, u_int8_t *myea) 107 { 108 struct dp8390_softc *dsc = &nsc->sc_dp8390; 109 bus_space_tag_t nict = dsc->sc_regt; 110 bus_space_handle_t nich = dsc->sc_regh; 111 bus_space_tag_t asict = nsc->sc_asict; 112 bus_space_handle_t asich = nsc->sc_asich; 113 u_int8_t romdata[16]; 114 int memsize, i, useword, dmawidth; 115 116 /* 117 * Detect it again unless caller specified it; this gives us 118 * the memory size. 119 */ 120 if (nsc->sc_type == NE2000_TYPE_UNKNOWN) 121 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 122 123 /* 124 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 125 * card uses DL10019. 126 */ 127 switch (nsc->sc_type) { 128 case NE2000_TYPE_UNKNOWN: 129 default: 130 aprint_error_dev(dsc->sc_dev, "where did the card go?\n"); 131 return (1); 132 case NE2000_TYPE_NE1000: 133 memsize = 8192; 134 useword = 0; 135 dmawidth = NE2000_DMAWIDTH_8BIT; 136 break; 137 case NE2000_TYPE_NE2000: 138 case NE2000_TYPE_AX88190: /* XXX really? */ 139 case NE2000_TYPE_AX88790: 140 memsize = 8192 * 2; 141 useword = 1; 142 dmawidth = NE2000_DMAWIDTH_16BIT; 143 break; 144 case NE2000_TYPE_DL10019: 145 case NE2000_TYPE_DL10022: 146 memsize = 8192 * 3; 147 useword = 1; 148 dmawidth = NE2000_DMAWIDTH_16BIT; 149 break; 150 } 151 152 nsc->sc_useword = useword; 153 if (nsc->sc_dmawidth == NE2000_DMAWIDTH_UNKNOWN) 154 nsc->sc_dmawidth = dmawidth; 155 else 156 dmawidth = nsc->sc_dmawidth; 157 158 dsc->cr_proto = ED_CR_RD2; 159 if (nsc->sc_type == NE2000_TYPE_AX88190 || 160 nsc->sc_type == NE2000_TYPE_AX88790) { 161 dsc->rcr_proto = ED_RCR_INTT; 162 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 163 } else 164 dsc->rcr_proto = 0; 165 166 /* 167 * DCR gets: 168 * 169 * FIFO threshold to 8, No auto-init Remote DMA, 170 * byte order=80x86. 171 * 172 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 173 */ 174 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 175 ((dmawidth == NE2000_DMAWIDTH_16BIT) ? ED_DCR_WTS : 0); 176 177 dsc->test_mem = ne2000_test_mem; 178 dsc->ring_copy = ne2000_ring_copy; 179 dsc->write_mbuf = ne2000_write_mbuf; 180 dsc->read_hdr = ne2000_read_hdr; 181 182 /* Registers are linear. */ 183 for (i = 0; i < 16; i++) 184 dsc->sc_reg_map[i] = i; 185 186 /* 187 * NIC memory doens't start at zero on an NE board. 188 * The start address is tied to the bus width. 189 * (It happens to be computed the same way as mem size.) 190 */ 191 dsc->mem_start = memsize; 192 193 #ifdef GWETHER 194 { 195 int x, mstart = 0; 196 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 197 tbuf[ED_PAGE_SIZE]; 198 199 for (i = 0; i < ED_PAGE_SIZE; i++) 200 pbuf0[i] = 0; 201 202 /* Search for the start of RAM. */ 203 for (x = 1; x < 256; x++) { 204 ne2000_writemem(nict, nich, asict, asich, pbuf0, 205 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 206 ne2000_readmem(nict, nich, asict, asich, 207 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 208 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 209 for (i = 0; i < ED_PAGE_SIZE; i++) 210 pbuf[i] = 255 - x; 211 ne2000_writemem(nict, nich, asict, asich, 212 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 213 useword, 0); 214 ne2000_readmem(nict, nich, asict, asich, 215 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 216 useword); 217 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 218 mstart = x << ED_PAGE_SHIFT; 219 memsize = ED_PAGE_SIZE; 220 break; 221 } 222 } 223 } 224 225 if (mstart == 0) { 226 aprint_error_dev(&dsc->sc_dev, "cannot find start of RAM\n"); 227 return (1); 228 } 229 230 /* Search for the end of RAM. */ 231 for (++x; x < 256; x++) { 232 ne2000_writemem(nict, nich, asict, asich, pbuf0, 233 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 234 ne2000_readmem(nict, nich, asict, asich, 235 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 236 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 237 for (i = 0; i < ED_PAGE_SIZE; i++) 238 pbuf[i] = 255 - x; 239 ne2000_writemem(nict, nich, asict, asich, 240 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 241 useword, 0); 242 ne2000_readmem(nict, nich, asict, asich, 243 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 244 useword); 245 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 246 memsize += ED_PAGE_SIZE; 247 else 248 break; 249 } else 250 break; 251 } 252 253 printf("%s: RAM start 0x%x, size %d\n", 254 device_xname(&dsc->sc_dev), mstart, memsize); 255 256 dsc->mem_start = mstart; 257 } 258 #endif /* GWETHER */ 259 260 dsc->mem_size = memsize; 261 262 if (myea == NULL) { 263 /* Read the station address. */ 264 if (nsc->sc_type == NE2000_TYPE_AX88190 || 265 nsc->sc_type == NE2000_TYPE_AX88790) { 266 /* Select page 0 registers. */ 267 NIC_BARRIER(nict, nich); 268 bus_space_write_1(nict, nich, ED_P0_CR, 269 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 270 NIC_BARRIER(nict, nich); 271 /* Select word transfer. */ 272 bus_space_write_1(nict, nich, ED_P0_DCR, 273 ((dmawidth == NE2000_DMAWIDTH_16BIT) ? ED_DCR_WTS : 0)); 274 NIC_BARRIER(nict, nich); 275 ne2000_readmem(nict, nich, asict, asich, 276 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 277 ETHER_ADDR_LEN, useword); 278 } else { 279 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 280 sizeof(romdata), useword); 281 for (i = 0; i < ETHER_ADDR_LEN; i++) 282 dsc->sc_enaddr[i] = 283 romdata[i * (useword ? 2 : 1)]; 284 } 285 } else 286 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 287 288 /* Clear any pending interrupts that might have occurred above. */ 289 NIC_BARRIER(nict, nich); 290 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 291 NIC_BARRIER(nict, nich); 292 293 if (dsc->sc_media_init == NULL) 294 dsc->sc_media_init = dp8390_media_init; 295 296 if (dp8390_config(dsc)) { 297 aprint_error_dev(dsc->sc_dev, "setup failed\n"); 298 return (1); 299 } 300 301 /* 302 * We need to compute mem_ring a bit differently; override the 303 * value set up in dp8390_config(). 304 */ 305 dsc->mem_ring = 306 dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 307 308 return (0); 309 } 310 311 /* 312 * Detect an NE-2000 or compatible. Returns a model code. 313 */ 314 int 315 ne2000_detect(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich) 316 { 317 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 318 u_int8_t test_buffer[32], tmp; 319 int i, rv = NE2000_TYPE_UNKNOWN; 320 int dmawidth = NE2000_DMAWIDTH_16BIT; 321 322 restart: 323 /* Reset the board. */ 324 #ifdef GWETHER 325 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 326 ASIC_BARRIER(asict, asich); 327 delay(200); 328 #endif /* GWETHER */ 329 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 330 ASIC_BARRIER(asict, asich); 331 delay(10000); 332 333 /* 334 * I don't know if this is necessary; probably cruft leftover from 335 * Clarkson packet driver code. Doesn't do a thing on the boards I've 336 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 337 * non-invasive...but some boards don't seem to reset and I don't have 338 * complete documentation on what the 'right' thing to do is...so we do 339 * the invasive thing for now. Yuck.] 340 */ 341 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 342 ASIC_BARRIER(asict, asich); 343 delay(5000); 344 345 /* 346 * This is needed because some NE clones apparently don't reset the 347 * NIC properly (or the NIC chip doesn't reset fully on power-up). 348 * XXX - this makes the probe invasive! Done against my better 349 * judgement. -DLG 350 */ 351 bus_space_write_1(nict, nich, ED_P0_CR, 352 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 353 NIC_BARRIER(nict, nich); 354 355 delay(5000); 356 357 /* 358 * Generic probe routine for testing for the existence of a DS8390. 359 * Must be performed after the NIC has just been reset. This 360 * works by looking at certain register values that are guaranteed 361 * to be initialized a certain way after power-up or reset. 362 * 363 * Specifically: 364 * 365 * Register reset bits set bits 366 * -------- ---------- -------- 367 * CR TXP, STA RD2, STP 368 * ISR RST 369 * IMR <all> 370 * DCR LAS 371 * TCR LB1, LB0 372 * 373 * We only look at CR and ISR, however, since looking at the others 374 * would require changing register pages, which would be intrusive 375 * if this isn't an 8390. 376 */ 377 378 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 379 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 380 (ED_CR_RD2 | ED_CR_STP)) 381 goto out; 382 383 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 384 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 385 goto out; 386 387 bus_space_write_1(nict, nich, 388 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 389 NIC_BARRIER(nict, nich); 390 391 for (i = 0; i < 100; i++) { 392 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 393 ED_ISR_RST) { 394 /* Ack the reset bit. */ 395 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 396 NIC_BARRIER(nict, nich); 397 break; 398 } 399 delay(100); 400 } 401 402 #if 0 403 /* XXX */ 404 if (i == 100) 405 goto out; 406 #endif 407 408 /* 409 * Test the ability to read and write to the NIC memory. This has 410 * the side effect of determining if this is an NE1000 or an NE2000. 411 */ 412 413 /* 414 * This prevents packets from being stored in the NIC memory when 415 * the readmem routine turns on the start bit in the CR. 416 */ 417 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 418 NIC_BARRIER(nict, nich); 419 420 /* Temporarily initialize DCR for byte operations. */ 421 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 422 423 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 424 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 425 426 /* 427 * Write a test pattern in byte mode. If this fails, then there 428 * probably isn't any memory at 8k - which likely means that the 429 * board is an NE2000. 430 */ 431 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 432 sizeof(test_pattern), 0, 1); 433 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 434 sizeof(test_buffer), 0); 435 436 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 437 /* not an NE1000 - try NE2000 */ 438 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS 439 | ((dmawidth == NE2000_DMAWIDTH_16BIT) ? ED_DCR_WTS : 0)); 440 bus_space_write_1(nict, nich, ED_P0_PSTART, 441 16384 >> ED_PAGE_SHIFT); 442 bus_space_write_1(nict, nich, ED_P0_PSTOP, 443 32768 >> ED_PAGE_SHIFT); 444 445 /* 446 * Write the test pattern in word mode. If this also fails, 447 * then we don't know what this board is. 448 */ 449 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 450 sizeof(test_pattern), 1, 0); 451 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 452 sizeof(test_buffer), 1); 453 454 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern))) { 455 if (dmawidth == NE2000_DMAWIDTH_16BIT) { 456 /* try 8bit dma */ 457 dmawidth = NE2000_DMAWIDTH_8BIT; 458 goto restart; 459 } 460 goto out; /* not an NE2000 either */ 461 } 462 463 rv = NE2000_TYPE_NE2000; 464 } else { 465 /* We're an NE1000. */ 466 rv = NE2000_TYPE_NE1000; 467 dmawidth = NE2000_DMAWIDTH_8BIT; 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(struct dp8390_softc *sc, struct mbuf *m, int buf) 484 { 485 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 486 bus_space_tag_t nict = sc->sc_regt; 487 bus_space_handle_t nich = sc->sc_regh; 488 bus_space_tag_t asict = nsc->sc_asict; 489 bus_space_handle_t asich = nsc->sc_asich; 490 int savelen, padlen; 491 int maxwait = 100; /* about 120us */ 492 493 savelen = m->m_pkthdr.len; 494 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 495 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 496 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 497 } else 498 padlen = 0; 499 500 501 /* Select page 0 registers. */ 502 NIC_BARRIER(nict, nich); 503 bus_space_write_1(nict, nich, ED_P0_CR, 504 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 505 NIC_BARRIER(nict, nich); 506 507 /* Reset remote DMA complete flag. */ 508 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 509 NIC_BARRIER(nict, nich); 510 511 /* Set up DMA byte count. */ 512 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 513 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 514 515 /* Set up destination address in NIC mem. */ 516 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 517 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 518 519 /* Set remote DMA write. */ 520 NIC_BARRIER(nict, nich); 521 bus_space_write_1(nict, nich, 522 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 523 NIC_BARRIER(nict, nich); 524 525 /* 526 * Transfer the mbuf chain to the NIC memory. NE2000 cards 527 * require that data be transferred as words, and only words, 528 * so that case requires some extra code to patch over odd-length 529 * mbufs. 530 */ 531 if (nsc->sc_type == NE2000_TYPE_NE1000) { 532 /* NE1000s are easy. */ 533 for (; m != 0; m = m->m_next) { 534 if (m->m_len) { 535 bus_space_write_multi_1(asict, asich, 536 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 537 m->m_len); 538 } 539 } 540 if (padlen) { 541 for(; padlen > 0; padlen--) 542 bus_space_write_1(asict, asich, 543 NE2000_ASIC_DATA, 0); 544 } 545 } else { 546 /* NE2000s are a bit trickier. */ 547 u_int8_t *data, savebyte[2]; 548 int l, leftover; 549 #ifdef DIAGNOSTIC 550 u_int8_t *lim; 551 #endif 552 /* Start out with no leftover data. */ 553 leftover = 0; 554 savebyte[0] = savebyte[1] = 0; 555 556 for (; m != 0; m = m->m_next) { 557 l = m->m_len; 558 if (l == 0) 559 continue; 560 data = mtod(m, u_int8_t *); 561 #ifdef DIAGNOSTIC 562 lim = data + l; 563 #endif 564 while (l > 0) { 565 if (leftover) { 566 /* 567 * Data left over (from mbuf or 568 * realignment). Buffer the next 569 * byte, and write it and the 570 * leftover data out. 571 */ 572 savebyte[1] = *data++; 573 l--; 574 bus_space_write_stream_2(asict, asich, 575 NE2000_ASIC_DATA, 576 *(u_int16_t *)savebyte); 577 leftover = 0; 578 } else if (BUS_SPACE_ALIGNED_POINTER(data, 579 u_int16_t) == 0) { 580 /* 581 * Unaligned data; buffer the next 582 * byte. 583 */ 584 savebyte[0] = *data++; 585 l--; 586 leftover = 1; 587 } else { 588 /* 589 * Aligned data; output contiguous 590 * words as much as we can, then 591 * buffer the remaining byte, if any. 592 */ 593 leftover = l & 1; 594 l &= ~1; 595 bus_space_write_multi_stream_2(asict, 596 asich, NE2000_ASIC_DATA, 597 (u_int16_t *)data, l >> 1); 598 data += l; 599 if (leftover) 600 savebyte[0] = *data++; 601 l = 0; 602 } 603 } 604 if (l < 0) 605 panic("ne2000_write_mbuf: negative len"); 606 #ifdef DIAGNOSTIC 607 if (data != lim) 608 panic("ne2000_write_mbuf: data != lim"); 609 #endif 610 } 611 if (leftover) { 612 savebyte[1] = 0; 613 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 614 *(u_int16_t *)savebyte); 615 } 616 if (padlen) { 617 for(; padlen > 1; padlen -= 2) 618 bus_space_write_stream_2(asict, asich, 619 NE2000_ASIC_DATA, 0); 620 } 621 } 622 NIC_BARRIER(nict, nich); 623 624 /* AX88796 doesn't seem to have remote DMA complete */ 625 if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) 626 return(savelen); 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 (void)bus_space_read_1(nict, nich, ED_P0_CRDA1); 638 (void)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 device_xname(sc->sc_dev)); 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(struct dp8390_softc *sc, int src, void *dstv, u_short amount) 660 { 661 char *dst = dstv; 662 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 663 bus_space_tag_t nict = sc->sc_regt; 664 bus_space_handle_t nich = sc->sc_regh; 665 bus_space_tag_t asict = nsc->sc_asict; 666 bus_space_handle_t asich = nsc->sc_asich; 667 u_short tmp_amount; 668 int useword = nsc->sc_useword; 669 670 /* Does copy wrap to lower addr in ring buffer? */ 671 if (src + amount > sc->mem_end) { 672 tmp_amount = sc->mem_end - src; 673 674 /* Copy amount up to end of NIC memory. */ 675 ne2000_readmem(nict, nich, asict, asich, src, 676 (u_int8_t *)dst, tmp_amount, useword); 677 678 amount -= tmp_amount; 679 src = sc->mem_ring; 680 dst += tmp_amount; 681 } 682 683 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 684 amount, useword); 685 686 return (src + amount); 687 } 688 689 void 690 ne2000_read_hdr(struct dp8390_softc *sc, int buf, struct dp8390_ring *hdr) 691 { 692 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 693 694 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 695 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 696 nsc->sc_useword); 697 #if BYTE_ORDER == BIG_ENDIAN 698 hdr->count = bswap16(hdr->count); 699 #endif 700 } 701 702 int 703 ne2000_test_mem(struct dp8390_softc *sc) 704 { 705 706 /* Noop. */ 707 return (0); 708 } 709 710 /* 711 * Given a NIC memory source address and a host memory destination address, 712 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 713 * rounded up to a word - ok as long as mbufs are word sized. 714 */ 715 void 716 ne2000_readmem(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich, int src, u_int8_t *dst, size_t amount, int useword) 717 { 718 719 /* Select page 0 registers. */ 720 NIC_BARRIER(nict, nich); 721 bus_space_write_1(nict, nich, ED_P0_CR, 722 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 723 NIC_BARRIER(nict, nich); 724 725 /* Round up to a word. */ 726 if (amount & 1) 727 ++amount; 728 729 /* Set up DMA byte count. */ 730 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 731 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 732 733 /* Set up source address in NIC mem. */ 734 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 735 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 736 737 NIC_BARRIER(nict, nich); 738 bus_space_write_1(nict, nich, ED_P0_CR, 739 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 740 741 ASIC_BARRIER(asict, asich); 742 if (useword) 743 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 744 (u_int16_t *)dst, amount >> 1); 745 else 746 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 747 dst, amount); 748 } 749 750 /* 751 * Stripped down routine for writing a linear buffer to NIC memory. Only 752 * used in the probe routine to test the memory. 'len' must be even. 753 */ 754 void 755 ne2000_writemem(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich, u_int8_t *src, int dst, size_t len, int useword, 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 NIC_BARRIER(nict, nich); 782 783 ASIC_BARRIER(asict, asich); 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 ASIC_BARRIER(asict, asich); 791 792 /* 793 * Wait for remote DMA to complete. This is necessary because on the 794 * transmit side, data is handled internally by the NIC in bursts, and 795 * we can't start another remote DMA until this one completes. Not 796 * waiting causes really bad things to happen - like the NIC wedging 797 * the bus. 798 */ 799 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 800 ED_ISR_RDC) && --maxwait) 801 DELAY(1); 802 803 if (!quiet && maxwait == 0) 804 printf("ne2000_writemem: failed to complete\n"); 805 } 806 807 int 808 ne2000_detach(struct ne2000_softc *sc, int flags) 809 { 810 811 return (dp8390_detach(&sc->sc_dp8390, flags)); 812 } 813 814 #ifdef IPKDB_NE 815 /* 816 * This code is essentially the same as ne2000_attach above. 817 */ 818 int 819 ne2000_ipkdb_attach(struct ipkdb_if *kip) 820 { 821 struct ne2000_softc *np = kip->port; 822 struct dp8390_softc *dp = &np->sc_dp8390; 823 bus_space_tag_t nict = dp->sc_regt; 824 bus_space_handle_t nich = dp->sc_regh; 825 int i, useword, dmawidth; 826 827 #ifdef GWETHER 828 /* Not supported (yet?) */ 829 return -1; 830 #endif 831 832 if (np->sc_type == NE2000_TYPE_UNKNOWN) 833 np->sc_type = ne2000_detect(nict, nich, 834 np->sc_asict, np->sc_asich); 835 if (np->sc_type == NE2000_TYPE_UNKNOWN) 836 return -1; 837 838 useword = np->sc_useword; 839 dmawidth = np->sc_dmawidth; 840 841 dp->cr_proto = ED_CR_RD2; 842 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | 843 ((dmawidth == NE2000_DMAWIDTH_16BIT) ? ED_DCR_WTS : 0); 844 dp->rcr_proto = 0; 845 846 dp->test_mem = ne2000_test_mem; 847 dp->ring_copy = ne2000_ring_copy; 848 dp->write_mbuf = ne2000_write_mbuf; 849 dp->read_hdr = ne2000_read_hdr; 850 851 for (i = 0; i < 16; i++) 852 dp->sc_reg_map[i] = i; 853 854 switch (np->sc_type) { 855 case NE2000_TYPE_NE1000: 856 dp->mem_start = dp->mem_size = 8192; 857 kip->name = "ne1000"; 858 break; 859 case NE2000_TYPE_NE2000: 860 dp->mem_start = dp->mem_size = 8192 * 2; 861 kip->name = "ne2000"; 862 break; 863 case NE2000_TYPE_DL10019: 864 case NE2000_TYPE_DL10022: 865 dp->mem_start = dp->mem_size = 8192 * 3; 866 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 867 "dl10022" : "dl10019"; 868 break; 869 case NE2000_TYPE_AX88190: 870 case NE2000_TYPE_AX88790: 871 dp->rcr_proto = ED_RCR_INTT; 872 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 873 dp->mem_start = dp->mem_size = 8192 * 2; 874 kip->name = "ax88190"; 875 break; 876 default: 877 return -1; 878 break; 879 } 880 881 if (dp8390_ipkdb_attach(kip)) 882 return -1; 883 884 dp->mem_ring = dp->mem_start 885 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 886 887 if (!(kip->flags & IPKDB_MYHW)) { 888 char romdata[16]; 889 890 /* Read the station address. */ 891 if (np->sc_type == NE2000_TYPE_AX88190 || 892 np->sc_type == NE2000_TYPE_AX88790) { 893 /* Select page 0 registers. */ 894 NIC_BARRIER(nict, nich); 895 bus_space_write_1(nict, nich, ED_P0_CR, 896 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 897 NIC_BARRIER(nict, nich); 898 /* Select word transfer */ 899 bus_space_write_1(nict, nich, ED_P0_DCR, 900 ((dmawidth == NE2000_DMAWIDTH_16BIT) ? ED_DCR_WTS : 0)); 901 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 902 AX88190_NODEID_OFFSET, kip->myenetaddr, 903 ETHER_ADDR_LEN, useword); 904 } else { 905 ne2000_readmem(nict, nich, np->sc_asict, np->sc_asich, 906 0, romdata, sizeof romdata, useword); 907 for (i = 0; i < ETHER_ADDR_LEN; i++) 908 kip->myenetaddr[i] = romdata[i << useword]; 909 } 910 kip->flags |= IPKDB_MYHW; 911 912 } 913 dp8390_stop(dp); 914 915 return 0; 916 } 917 #endif 918 919 bool 920 ne2000_suspend(device_t self, pmf_qual_t qual) 921 { 922 struct ne2000_softc *sc = device_private(self); 923 struct dp8390_softc *dsc = &sc->sc_dp8390; 924 int s; 925 926 s = splnet(); 927 928 dp8390_stop(dsc); 929 dp8390_disable(dsc); 930 931 splx(s); 932 return true; 933 } 934 935 bool 936 ne2000_resume(device_t self, pmf_qual_t qual) 937 { 938 struct ne2000_softc *sc = device_private(self); 939 struct dp8390_softc *dsc = &sc->sc_dp8390; 940 struct ifnet *ifp = &dsc->sc_ec.ec_if; 941 int s; 942 943 s = splnet(); 944 945 if (ifp->if_flags & IFF_UP) { 946 if (dp8390_enable(dsc) == 0) 947 dp8390_init(dsc); 948 } 949 950 splx(s); 951 return true; 952 } 953
Indexes created Tue Sep 23 22:09:46 GMT 2025