ne2000.c revision 1.74
1 /* $NetBSD: ne2000.c,v 1.74 2013/08/11 12:34:16 rkujawa 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 1.74 2013/08/11 12:34:16 rkujawa Exp $"); 52 53 #include "opt_ipkdb.h" 54 55 #include "rtl80x9.h" 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/device.h> 60 #include <sys/socket.h> 61 #include <sys/mbuf.h> 62 #include <sys/syslog.h> 63 64 #include <net/if.h> 65 #include <net/if_dl.h> 66 #include <net/if_types.h> 67 #include <net/if_media.h> 68 69 #include <net/if_ether.h> 70 71 #include <sys/bswap.h> 72 #include <sys/bus.h> 73 74 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 75 #define bus_space_write_stream_2 bus_space_write_2 76 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 77 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 78 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 79 80 #ifdef IPKDB_NE 81 #include <ipkdb/ipkdb.h> 82 #endif 83 84 #include <dev/ic/dp8390reg.h> 85 #include <dev/ic/dp8390var.h> 86 87 #include <dev/ic/ne2000reg.h> 88 #include <dev/ic/ne2000var.h> 89 90 #include <dev/ic/rtl80x9reg.h> 91 #include <dev/ic/rtl80x9var.h> 92 93 #include <dev/ic/ax88190reg.h> 94 95 static int ne2000_write_mbuf(struct dp8390_softc *, struct mbuf *, int); 96 static int ne2000_ring_copy(struct dp8390_softc *, int, void *, u_short); 97 static void ne2000_read_hdr(struct dp8390_softc *, int, 98 struct dp8390_ring *); 99 static int ne2000_test_mem(struct dp8390_softc *); 100 101 static void ne2000_writemem(bus_space_tag_t, bus_space_handle_t, 102 bus_space_tag_t, bus_space_handle_t, const uint8_t *, int, 103 size_t, int, int); 104 static void ne2000_readmem(bus_space_tag_t, bus_space_handle_t, 105 bus_space_tag_t, bus_space_handle_t, int, uint8_t *, 106 size_t, int); 107 108 #ifdef NE2000_DETECT_8BIT 109 static bool ne2000_detect_8bit(bus_space_tag_t, bus_space_handle_t, 110 bus_space_tag_t, bus_space_handle_t); 111 #endif 112 113 #define ASIC_BARRIER(asict, asich) \ 114 bus_space_barrier((asict), (asich), 0, 0x10, \ 115 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) 116 117 int 118 ne2000_attach(struct ne2000_softc *nsc, uint8_t *myea) 119 { 120 struct dp8390_softc *dsc = &nsc->sc_dp8390; 121 bus_space_tag_t nict = dsc->sc_regt; 122 bus_space_handle_t nich = dsc->sc_regh; 123 bus_space_tag_t asict = nsc->sc_asict; 124 bus_space_handle_t asich = nsc->sc_asich; 125 uint8_t romdata[16]; 126 int memstart, memsize, i, useword; 127 128 /* 129 * Detect it again unless caller specified it; this gives us 130 * the memory size. 131 */ 132 if (nsc->sc_type == NE2000_TYPE_UNKNOWN) 133 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 134 135 /* 136 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 137 * card uses DL10019. 138 */ 139 switch (nsc->sc_type) { 140 case NE2000_TYPE_UNKNOWN: 141 default: 142 aprint_error_dev(dsc->sc_dev, "where did the card go?\n"); 143 return 1; 144 case NE2000_TYPE_NE1000: 145 memstart = 8192; 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 case NE2000_TYPE_AX88796: 153 #if NRTL80X9 > 0 154 case NE2000_TYPE_RTL8019: 155 #endif 156 memstart = 16384; 157 memsize = 16384; 158 useword = 1; 159 160 if ( 161 #ifdef NE2000_DETECT_8BIT 162 ne2000_detect_8bit(nict, nich, asict, asich) || 163 #endif 164 (nsc->sc_quirk & NE2000_QUIRK_8BIT) != 0) { 165 /* in 8 bit mode, only 8KB memory can be used */ 166 memsize = 8192; 167 useword = 0; 168 } 169 break; 170 case NE2000_TYPE_DL10019: 171 case NE2000_TYPE_DL10022: 172 memstart = 8192 * 3; 173 memsize = 8192 * 3; 174 useword = 1; 175 break; 176 } 177 178 nsc->sc_useword = useword; 179 #if NRTL80X9 > 0 180 if (nsc->sc_type == NE2000_TYPE_RTL8019) { 181 dsc->init_card = rtl80x9_init_card; 182 dsc->sc_media_init = rtl80x9_media_init; 183 dsc->sc_mediachange = rtl80x9_mediachange; 184 dsc->sc_mediastatus = rtl80x9_mediastatus; 185 } 186 #endif 187 188 dsc->cr_proto = ED_CR_RD2; 189 if (nsc->sc_type == NE2000_TYPE_AX88190 || 190 nsc->sc_type == NE2000_TYPE_AX88790) { 191 dsc->rcr_proto = ED_RCR_INTT; 192 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 193 } else 194 dsc->rcr_proto = 0; 195 196 /* 197 * DCR gets: 198 * 199 * FIFO threshold to 8, No auto-init Remote DMA, 200 * byte order=80x86. 201 * 202 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 203 */ 204 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 205 206 dsc->test_mem = ne2000_test_mem; 207 dsc->ring_copy = ne2000_ring_copy; 208 dsc->write_mbuf = ne2000_write_mbuf; 209 dsc->read_hdr = ne2000_read_hdr; 210 211 /* Registers are linear. */ 212 for (i = 0; i < 16; i++) 213 dsc->sc_reg_map[i] = i; 214 215 /* 216 * NIC memory doens't start at zero on an NE board. 217 * The start address is tied to the bus width. 218 */ 219 #ifdef GWETHER 220 { 221 int x; 222 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 223 tbuf[ED_PAGE_SIZE]; 224 225 memstart = 0; 226 for (i = 0; i < ED_PAGE_SIZE; i++) 227 pbuf0[i] = 0; 228 229 /* Search for the start of RAM. */ 230 for (x = 1; x < 256; x++) { 231 ne2000_writemem(nict, nich, asict, asich, pbuf0, 232 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 233 ne2000_readmem(nict, nich, asict, asich, 234 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 235 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 236 for (i = 0; i < ED_PAGE_SIZE; i++) 237 pbuf[i] = 255 - x; 238 ne2000_writemem(nict, nich, asict, asich, 239 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 240 useword, 0); 241 ne2000_readmem(nict, nich, asict, asich, 242 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 243 useword); 244 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 245 memstart = x << ED_PAGE_SHIFT; 246 memsize = ED_PAGE_SIZE; 247 break; 248 } 249 } 250 } 251 252 if (memstart == 0) { 253 aprint_error_dev(dsc->sc_dev, 254 "cannot find start of RAM\n"); 255 return 1; 256 } 257 258 /* Search for the end of RAM. */ 259 for (++x; x < 256; x++) { 260 ne2000_writemem(nict, nich, asict, asich, pbuf0, 261 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 262 ne2000_readmem(nict, nich, asict, asich, 263 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 264 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 265 for (i = 0; i < ED_PAGE_SIZE; i++) 266 pbuf[i] = 255 - x; 267 ne2000_writemem(nict, nich, asict, asich, 268 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 269 useword, 0); 270 ne2000_readmem(nict, nich, asict, asich, 271 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 272 useword); 273 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 274 memsize += ED_PAGE_SIZE; 275 else 276 break; 277 } else 278 break; 279 } 280 281 printf("%s: RAM start 0x%x, size %d\n", 282 device_xname(dsc->sc_dev), memstart, memsize); 283 } 284 #endif /* GWETHER */ 285 dsc->mem_start = memstart; 286 287 dsc->mem_size = memsize; 288 289 if (myea == NULL) { 290 /* Read the station address. */ 291 if (nsc->sc_type == NE2000_TYPE_AX88190 || 292 nsc->sc_type == NE2000_TYPE_AX88790 || 293 nsc->sc_type == NE2000_TYPE_AX88796) { 294 /* Select page 0 registers. */ 295 NIC_BARRIER(nict, nich); 296 bus_space_write_1(nict, nich, ED_P0_CR, 297 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 298 NIC_BARRIER(nict, nich); 299 /* Select word transfer. */ 300 bus_space_write_1(nict, nich, ED_P0_DCR, 301 useword ? ED_DCR_WTS : 0); 302 NIC_BARRIER(nict, nich); 303 ne2000_readmem(nict, nich, asict, asich, 304 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 305 ETHER_ADDR_LEN, useword); 306 } else { 307 bool ne1000 = (nsc->sc_type == NE2000_TYPE_NE1000); 308 309 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 310 sizeof(romdata), useword); 311 for (i = 0; i < ETHER_ADDR_LEN; i++) 312 dsc->sc_enaddr[i] = 313 romdata[i * (ne1000 ? 1 : 2)]; 314 } 315 } else 316 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 317 318 /* Clear any pending interrupts that might have occurred above. */ 319 NIC_BARRIER(nict, nich); 320 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 321 NIC_BARRIER(nict, nich); 322 323 if (dsc->sc_media_init == NULL) 324 dsc->sc_media_init = dp8390_media_init; 325 326 if (dp8390_config(dsc)) { 327 aprint_error_dev(dsc->sc_dev, "setup failed\n"); 328 return 1; 329 } 330 331 return 0; 332 } 333 334 /* 335 * Detect an NE-2000 or compatible. Returns a model code. 336 */ 337 int 338 ne2000_detect(bus_space_tag_t nict, bus_space_handle_t nich, 339 bus_space_tag_t asict, bus_space_handle_t asich) 340 { 341 const uint8_t test_pattern[32] = "THIS is A memory TEST pattern"; 342 uint8_t test_buffer[32], tmp; 343 int i, rv = NE2000_TYPE_UNKNOWN; 344 int useword; 345 346 /* Reset the board. */ 347 #ifdef GWETHER 348 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 349 ASIC_BARRIER(asict, asich); 350 delay(200); 351 #endif /* GWETHER */ 352 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 353 ASIC_BARRIER(asict, asich); 354 delay(10000); 355 356 /* 357 * I don't know if this is necessary; probably cruft leftover from 358 * Clarkson packet driver code. Doesn't do a thing on the boards I've 359 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 360 * non-invasive...but some boards don't seem to reset and I don't have 361 * complete documentation on what the 'right' thing to do is...so we do 362 * the invasive thing for now. Yuck.] 363 */ 364 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 365 ASIC_BARRIER(asict, asich); 366 delay(5000); 367 368 /* 369 * This is needed because some NE clones apparently don't reset the 370 * NIC properly (or the NIC chip doesn't reset fully on power-up). 371 * XXX - this makes the probe invasive! Done against my better 372 * judgement. -DLG 373 */ 374 bus_space_write_1(nict, nich, ED_P0_CR, 375 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 376 NIC_BARRIER(nict, nich); 377 378 delay(5000); 379 380 /* 381 * Generic probe routine for testing for the existence of a DS8390. 382 * Must be performed after the NIC has just been reset. This 383 * works by looking at certain register values that are guaranteed 384 * to be initialized a certain way after power-up or reset. 385 * 386 * Specifically: 387 * 388 * Register reset bits set bits 389 * -------- ---------- -------- 390 * CR TXP, STA RD2, STP 391 * ISR RST 392 * IMR <all> 393 * DCR LAS 394 * TCR LB1, LB0 395 * 396 * We only look at CR and ISR, however, since looking at the others 397 * would require changing register pages, which would be intrusive 398 * if this isn't an 8390. 399 */ 400 401 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 402 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 403 (ED_CR_RD2 | ED_CR_STP)) 404 goto out; 405 406 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 407 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 408 goto out; 409 410 bus_space_write_1(nict, nich, 411 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 412 NIC_BARRIER(nict, nich); 413 414 for (i = 0; i < 100; i++) { 415 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 416 ED_ISR_RST) { 417 /* Ack the reset bit. */ 418 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 419 NIC_BARRIER(nict, nich); 420 break; 421 } 422 delay(100); 423 } 424 425 #if 0 426 /* XXX */ 427 if (i == 100) 428 goto out; 429 #endif 430 431 /* 432 * Test the ability to read and write to the NIC memory. This has 433 * the side effect of determining if this is an NE1000 or an NE2000. 434 */ 435 436 /* 437 * This prevents packets from being stored in the NIC memory when 438 * the readmem routine turns on the start bit in the CR. 439 */ 440 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 441 NIC_BARRIER(nict, nich); 442 443 /* Temporarily initialize DCR for byte operations. */ 444 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 445 446 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 447 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 448 449 /* 450 * Write a test pattern in byte mode. If this fails, then there 451 * probably isn't any memory at 8k - which likely means that the 452 * board is an NE2000. 453 */ 454 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 455 sizeof(test_pattern), 0, 1); 456 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 457 sizeof(test_buffer), 0); 458 459 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { 460 /* We're an NE1000. */ 461 rv = NE2000_TYPE_NE1000; 462 goto out; 463 } 464 465 /* not an NE1000 - try NE2000 */ 466 467 /* try 16 bit mode first */ 468 useword = 1; 469 470 #ifdef NE2000_DETECT_8BIT 471 /* 472 * Check bus type in EEPROM first because some NE2000 compatible wedges 473 * on 16 bit DMA access if the chip is configured in 8 bit mode. 474 */ 475 if (ne2000_detect_8bit(nict, nich, asict, asich)) 476 useword = 0; 477 #endif 478 again: 479 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS | 480 (useword ? ED_DCR_WTS : 0)); 481 bus_space_write_1(nict, nich, ED_P0_PSTART, 16384 >> ED_PAGE_SHIFT); 482 bus_space_write_1(nict, nich, ED_P0_PSTOP, 483 (16384 + (useword ? 16384 : 8192)) >> ED_PAGE_SHIFT); 484 485 /* 486 * Write the test pattern in word mode. If this also fails, 487 * then we don't know what this board is. 488 */ 489 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 490 sizeof(test_pattern), useword, 1); 491 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 492 sizeof(test_buffer), useword); 493 494 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) != 0) { 495 if (useword == 1) { 496 /* try 8 bit mode */ 497 useword = 0; 498 goto again; 499 } 500 return NE2000_TYPE_UNKNOWN; /* not an NE2000 either */ 501 } 502 503 rv = NE2000_TYPE_NE2000; 504 505 #if NRTL80X9 > 0 506 /* Check for a Realtek RTL8019. */ 507 if (bus_space_read_1(nict, nich, NERTL_RTL0_8019ID0) == RTL0_8019ID0 && 508 bus_space_read_1(nict, nich, NERTL_RTL0_8019ID1) == RTL0_8019ID1) 509 rv = NE2000_TYPE_RTL8019; 510 #endif 511 512 out: 513 /* Clear any pending interrupts that might have occurred above. */ 514 NIC_BARRIER(nict, nich); 515 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 516 517 return rv; 518 } 519 520 #ifdef NE2000_DETECT_8BIT 521 static bool 522 ne2000_detect_8bit(bus_space_tag_t nict, bus_space_handle_t nich, 523 bus_space_tag_t asict, bus_space_handle_t asich) 524 { 525 bool is8bit; 526 uint8_t romdata[32]; 527 528 is8bit = false; 529 530 /* Set DCR for 8 bit DMA. */ 531 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 532 /* Read PROM area. */ 533 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 534 sizeof(romdata), 0); 535 if (romdata[28] == 'B' && romdata[30] == 'B') { 536 /* 'B' (0x42) in 8 bit mode, 'W' (0x57) in 16 bit mode */ 537 is8bit = true; 538 } 539 if (!is8bit) { 540 /* not in 8 bit mode; put back DCR setting for 16 bit DMA */ 541 bus_space_write_1(nict, nich, ED_P0_DCR, 542 ED_DCR_FT1 | ED_DCR_LS | ED_DCR_WTS); 543 } 544 545 return is8bit; 546 } 547 #endif 548 549 /* 550 * Write an mbuf chain to the destination NIC memory address using programmed 551 * I/O. 552 */ 553 int 554 ne2000_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) 555 { 556 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 557 bus_space_tag_t nict = sc->sc_regt; 558 bus_space_handle_t nich = sc->sc_regh; 559 bus_space_tag_t asict = nsc->sc_asict; 560 bus_space_handle_t asich = nsc->sc_asich; 561 int savelen, padlen; 562 int maxwait = 100; /* about 120us */ 563 564 savelen = m->m_pkthdr.len; 565 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 566 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 567 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 568 } else 569 padlen = 0; 570 571 572 /* Select page 0 registers. */ 573 NIC_BARRIER(nict, nich); 574 bus_space_write_1(nict, nich, ED_P0_CR, 575 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 576 NIC_BARRIER(nict, nich); 577 578 /* Reset remote DMA complete flag. */ 579 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 580 NIC_BARRIER(nict, nich); 581 582 /* Set up DMA byte count. */ 583 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 584 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 585 586 /* Set up destination address in NIC mem. */ 587 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 588 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 589 590 /* Set remote DMA write. */ 591 NIC_BARRIER(nict, nich); 592 bus_space_write_1(nict, nich, 593 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 594 NIC_BARRIER(nict, nich); 595 596 /* 597 * Transfer the mbuf chain to the NIC memory. NE2000 cards 598 * require that data be transferred as words, and only words, 599 * so that case requires some extra code to patch over odd-length 600 * mbufs. 601 */ 602 if (nsc->sc_useword == 0) { 603 /* byte ops are easy. */ 604 for (; m != NULL; m = m->m_next) { 605 if (m->m_len) { 606 bus_space_write_multi_1(asict, asich, 607 NE2000_ASIC_DATA, mtod(m, uint8_t *), 608 m->m_len); 609 } 610 } 611 if (padlen) { 612 for(; padlen > 0; padlen--) 613 bus_space_write_1(asict, asich, 614 NE2000_ASIC_DATA, 0); 615 } 616 } else { 617 /* word ops are a bit trickier. */ 618 uint8_t *data, savebyte[2]; 619 int l, leftover; 620 #ifdef DIAGNOSTIC 621 uint8_t *lim; 622 #endif 623 /* Start out with no leftover data. */ 624 leftover = 0; 625 savebyte[0] = savebyte[1] = 0; 626 627 for (; m != NULL; m = m->m_next) { 628 l = m->m_len; 629 if (l == 0) 630 continue; 631 data = mtod(m, uint8_t *); 632 #ifdef DIAGNOSTIC 633 lim = data + l; 634 #endif 635 while (l > 0) { 636 if (leftover) { 637 /* 638 * Data left over (from mbuf or 639 * realignment). Buffer the next 640 * byte, and write it and the 641 * leftover data out. 642 */ 643 savebyte[1] = *data++; 644 l--; 645 bus_space_write_stream_2(asict, asich, 646 NE2000_ASIC_DATA, 647 *(uint16_t *)savebyte); 648 leftover = 0; 649 } else if (BUS_SPACE_ALIGNED_POINTER(data, 650 uint16_t) == 0) { 651 /* 652 * Unaligned data; buffer the next 653 * byte. 654 */ 655 savebyte[0] = *data++; 656 l--; 657 leftover = 1; 658 } else { 659 /* 660 * Aligned data; output contiguous 661 * words as much as we can, then 662 * buffer the remaining byte, if any. 663 */ 664 leftover = l & 1; 665 l &= ~1; 666 bus_space_write_multi_stream_2(asict, 667 asich, NE2000_ASIC_DATA, 668 (uint16_t *)data, l >> 1); 669 data += l; 670 if (leftover) 671 savebyte[0] = *data++; 672 l = 0; 673 } 674 } 675 if (l < 0) 676 panic("ne2000_write_mbuf: negative len"); 677 #ifdef DIAGNOSTIC 678 if (data != lim) 679 panic("ne2000_write_mbuf: data != lim"); 680 #endif 681 } 682 if (leftover) { 683 savebyte[1] = 0; 684 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 685 *(uint16_t *)savebyte); 686 } 687 if (padlen) { 688 for(; padlen > 1; padlen -= 2) 689 bus_space_write_stream_2(asict, asich, 690 NE2000_ASIC_DATA, 0); 691 } 692 } 693 NIC_BARRIER(nict, nich); 694 695 /* some AX88796 doesn't seem to have remote DMA complete */ 696 if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) 697 return savelen; 698 699 /* 700 * Wait for remote DMA to complete. This is necessary because on the 701 * transmit side, data is handled internally by the NIC in bursts, and 702 * we can't start another remote DMA until this one completes. Not 703 * waiting causes really bad things to happen - like the NIC wedging 704 * the bus. 705 */ 706 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 707 ED_ISR_RDC) && --maxwait) { 708 (void)bus_space_read_1(nict, nich, ED_P0_CRDA1); 709 (void)bus_space_read_1(nict, nich, ED_P0_CRDA0); 710 NIC_BARRIER(nict, nich); 711 DELAY(1); 712 } 713 714 if (maxwait == 0) { 715 log(LOG_WARNING, 716 "%s: remote transmit DMA failed to complete\n", 717 device_xname(sc->sc_dev)); 718 dp8390_reset(sc); 719 } 720 721 return savelen; 722 } 723 724 /* 725 * Given a source and destination address, copy 'amout' of a packet from 726 * the ring buffer into a linear destination buffer. Takes into account 727 * ring-wrap. 728 */ 729 int 730 ne2000_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount) 731 { 732 char *dst = dstv; 733 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 734 bus_space_tag_t nict = sc->sc_regt; 735 bus_space_handle_t nich = sc->sc_regh; 736 bus_space_tag_t asict = nsc->sc_asict; 737 bus_space_handle_t asich = nsc->sc_asich; 738 u_short tmp_amount; 739 int useword = nsc->sc_useword; 740 741 /* Does copy wrap to lower addr in ring buffer? */ 742 if (src + amount > sc->mem_end) { 743 tmp_amount = sc->mem_end - src; 744 745 /* Copy amount up to end of NIC memory. */ 746 ne2000_readmem(nict, nich, asict, asich, src, 747 (uint8_t *)dst, tmp_amount, useword); 748 749 amount -= tmp_amount; 750 src = sc->mem_ring; 751 dst += tmp_amount; 752 } 753 754 ne2000_readmem(nict, nich, asict, asich, src, (uint8_t *)dst, 755 amount, useword); 756 757 return src + amount; 758 } 759 760 void 761 ne2000_read_hdr(struct dp8390_softc *sc, int buf, struct dp8390_ring *hdr) 762 { 763 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 764 765 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 766 buf, (uint8_t *)hdr, sizeof(struct dp8390_ring), 767 nsc->sc_useword); 768 #if BYTE_ORDER == BIG_ENDIAN 769 hdr->count = bswap16(hdr->count); 770 #endif 771 } 772 773 int 774 ne2000_test_mem(struct dp8390_softc *sc) 775 { 776 777 /* Noop. */ 778 return 0; 779 } 780 781 /* 782 * Given a NIC memory source address and a host memory destination address, 783 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 784 * rounded up to a word - ok as long as mbufs are word sized. 785 */ 786 void 787 ne2000_readmem(bus_space_tag_t nict, bus_space_handle_t nich, 788 bus_space_tag_t asict, bus_space_handle_t asich, 789 int src, uint8_t *dst, size_t amount, int useword) 790 { 791 792 /* Select page 0 registers. */ 793 NIC_BARRIER(nict, nich); 794 bus_space_write_1(nict, nich, ED_P0_CR, 795 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 796 NIC_BARRIER(nict, nich); 797 798 /* Round up to a word. */ 799 amount = roundup2(amount, sizeof(uint16_t)); 800 801 /* Set up DMA byte count. */ 802 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 803 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 804 805 /* Set up source address in NIC mem. */ 806 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 807 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 808 809 NIC_BARRIER(nict, nich); 810 bus_space_write_1(nict, nich, ED_P0_CR, 811 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 812 813 ASIC_BARRIER(asict, asich); 814 if (useword) 815 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 816 (uint16_t *)dst, amount >> 1); 817 else 818 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 819 dst, amount); 820 } 821 822 /* 823 * Stripped down routine for writing a linear buffer to NIC memory. Only 824 * used in the probe routine to test the memory. 'len' must be even. 825 */ 826 void 827 ne2000_writemem(bus_space_tag_t nict, bus_space_handle_t nich, 828 bus_space_tag_t asict, bus_space_handle_t asich, 829 const uint8_t *src, int dst, size_t len, int useword, int quiet) 830 { 831 int maxwait = 100; /* about 120us */ 832 833 /* Select page 0 registers. */ 834 NIC_BARRIER(nict, nich); 835 bus_space_write_1(nict, nich, ED_P0_CR, 836 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 837 NIC_BARRIER(nict, nich); 838 839 /* Reset remote DMA complete flag. */ 840 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 841 NIC_BARRIER(nict, nich); 842 843 /* Set up DMA byte count. */ 844 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 845 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 846 847 /* Set up destination address in NIC mem. */ 848 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 849 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 850 851 /* Set remote DMA write. */ 852 NIC_BARRIER(nict, nich); 853 bus_space_write_1(nict, nich, ED_P0_CR, 854 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 855 NIC_BARRIER(nict, nich); 856 857 ASIC_BARRIER(asict, asich); 858 if (useword) 859 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 860 (const uint16_t *)src, len >> 1); 861 else 862 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 863 src, len); 864 ASIC_BARRIER(asict, asich); 865 866 /* 867 * Wait for remote DMA to complete. This is necessary because on the 868 * transmit side, data is handled internally by the NIC in bursts, and 869 * we can't start another remote DMA until this one completes. Not 870 * waiting causes really bad things to happen - like the NIC wedging 871 * the bus. 872 */ 873 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 874 ED_ISR_RDC) && --maxwait) 875 DELAY(1); 876 877 if (!quiet && maxwait == 0) 878 printf("ne2000_writemem: failed to complete\n"); 879 } 880 881 int 882 ne2000_detach(struct ne2000_softc *sc, int flags) 883 { 884 885 return dp8390_detach(&sc->sc_dp8390, flags); 886 } 887 888 #ifdef IPKDB_NE 889 /* 890 * This code is essentially the same as ne2000_attach above. 891 */ 892 int 893 ne2000_ipkdb_attach(struct ipkdb_if *kip) 894 { 895 struct ne2000_softc *np = kip->port; 896 struct dp8390_softc *dp = &np->sc_dp8390; 897 bus_space_tag_t nict = dp->sc_regt; 898 bus_space_handle_t nich = dp->sc_regh; 899 bus_space_tag_t asict = np->sc_asict; 900 bus_space_handle_t asich = np->sc_asich; 901 int i, useword; 902 903 #ifdef GWETHER 904 /* Not supported (yet?) */ 905 return -1; 906 #endif 907 908 if (np->sc_type == NE2000_TYPE_UNKNOWN) 909 np->sc_type = ne2000_detect(nict, nich, asict, asich); 910 if (np->sc_type == NE2000_TYPE_UNKNOWN) 911 return -1; 912 913 switch (np->sc_type) { 914 case NE2000_TYPE_NE1000: 915 dp->mem_start = 8192; 916 dp->mem_size = 8192; 917 useword = 0; 918 kip->name = "ne1000"; 919 break; 920 case NE2000_TYPE_NE2000: 921 case NE2000_TYPE_AX88190: 922 case NE2000_TYPE_AX88790: 923 case NE2000_TYPE_AX88796: 924 #if NRTL80X9 > 0 925 case NE2000_TYPE_RTL8019: 926 #endif 927 dp->mem_start = 16384; 928 dp->mem_size = 16384; 929 useword = 1; 930 if ( 931 #ifdef NE2000_DETECT_8BIT 932 ne2000_detect_8bit(nict, nich, asict, asich) || 933 #endif 934 (np->sc_quirk & NE2000_QUIRK_8BIT) != 0) { 935 /* in 8 bit mode, only 8KB memory can be used */ 936 dp->mem_size = 8192; 937 useword = 0; 938 } 939 kip->name = 940 (np->sc_type == NE2000_TYPE_AX88190 || 941 np->sc_type == NE2000_TYPE_AX88790) ? 942 "ax88190" : "ne2000"; 943 break; 944 case NE2000_TYPE_DL10019: 945 case NE2000_TYPE_DL10022: 946 dp->mem_start = 8192 * 3; 947 dp->mem_size = 8192 * 3; 948 useword = 1; 949 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 950 "dl10022" : "dl10019"; 951 break; 952 default: 953 return -1; 954 break; 955 } 956 957 np->sc_useword = useword; 958 #if NRTL80X9 > 0 959 if (np->sc_type == NE2000_TYPE_RTL8019) { 960 dp->init_card = rtl80x9_init_card; 961 dp->sc_media_init = rtl80x9_media_init; 962 dp->sc_mediachange = rtl80x9_mediachange; 963 dp->sc_mediastatus = rtl80x9_mediastatus; 964 } 965 #endif 966 967 dp->cr_proto = ED_CR_RD2; 968 if (np->sc_type == NE2000_TYPE_AX88190 || 969 np->sc_type == NE2000_TYPE_AX88790) { 970 dp->rcr_proto = ED_RCR_INTT; 971 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 972 } else 973 dp->rcr_proto = 0; 974 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 975 976 dp->test_mem = ne2000_test_mem; 977 dp->ring_copy = ne2000_ring_copy; 978 dp->write_mbuf = ne2000_write_mbuf; 979 dp->read_hdr = ne2000_read_hdr; 980 981 for (i = 0; i < 16; i++) 982 dp->sc_reg_map[i] = i; 983 984 if (dp8390_ipkdb_attach(kip)) 985 return -1; 986 987 if (!(kip->flags & IPKDB_MYHW)) { 988 char romdata[16]; 989 990 /* Read the station address. */ 991 if (np->sc_type == NE2000_TYPE_AX88190 || 992 np->sc_type == NE2000_TYPE_AX88790 || 993 np->sc_type == NE2000_TYPE_AX88796) { 994 /* Select page 0 registers. */ 995 NIC_BARRIER(nict, nich); 996 bus_space_write_1(nict, nich, ED_P0_CR, 997 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 998 NIC_BARRIER(nict, nich); 999 /* Select word transfer */ 1000 bus_space_write_1(nict, nich, ED_P0_DCR, 1001 useword ? ED_DCR_WTS : 0); 1002 ne2000_readmem(nict, nich, asict, asich, 1003 AX88190_NODEID_OFFSET, kip->myenetaddr, 1004 ETHER_ADDR_LEN, useword); 1005 } else { 1006 bool ne1000 = (np->sc_type == NE2000_TYPE_NE1000); 1007 1008 ne2000_readmem(nict, nich, asict, asich, 1009 0, romdata, sizeof romdata, useword); 1010 for (i = 0; i < ETHER_ADDR_LEN; i++) 1011 kip->myenetaddr[i] = 1012 romdata[i * (ne1000 ? 1 : 2)]; 1013 } 1014 kip->flags |= IPKDB_MYHW; 1015 1016 } 1017 dp8390_stop(dp); 1018 1019 return 0; 1020 } 1021 #endif 1022 1023 bool 1024 ne2000_suspend(device_t self, const pmf_qual_t *qual) 1025 { 1026 struct ne2000_softc *sc = device_private(self); 1027 struct dp8390_softc *dsc = &sc->sc_dp8390; 1028 int s; 1029 1030 s = splnet(); 1031 1032 dp8390_stop(dsc); 1033 dp8390_disable(dsc); 1034 1035 splx(s); 1036 return true; 1037 } 1038 1039 bool 1040 ne2000_resume(device_t self, const pmf_qual_t *qual) 1041 { 1042 struct ne2000_softc *sc = device_private(self); 1043 struct dp8390_softc *dsc = &sc->sc_dp8390; 1044 struct ifnet *ifp = &dsc->sc_ec.ec_if; 1045 int s; 1046 1047 s = splnet(); 1048 1049 if (ifp->if_flags & IFF_UP) { 1050 if (dp8390_enable(dsc) == 0) 1051 dp8390_init(dsc); 1052 } 1053 1054 splx(s); 1055 return true; 1056 } 1057
Indexes created Wed Sep 24 14:09:57 GMT 2025