ne2000.c revision 1.58.4.4
1 /* $NetBSD: ne2000.c,v 1.58.4.4 2010/03/11 15:03:33 yamt 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 1.58.4.4 2010/03/11 15:03:33 yamt 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 int ne2000_write_mbuf(struct dp8390_softc *, struct mbuf *, int); 96 int ne2000_ring_copy(struct dp8390_softc *, int, void *, u_short); 97 void ne2000_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); 98 int ne2000_test_mem(struct dp8390_softc *); 99 100 void ne2000_writemem(bus_space_tag_t, bus_space_handle_t, 101 bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t, 102 int, int); 103 void ne2000_readmem(bus_space_tag_t, bus_space_handle_t, 104 bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int); 105 106 #ifdef NE2000_DETECT_8BIT 107 static bool ne2000_detect_8bit(bus_space_tag_t, bus_space_handle_t, 108 bus_space_tag_t, bus_space_handle_t); 109 #endif 110 111 #define ASIC_BARRIER(asict, asich) \ 112 bus_space_barrier((asict), (asich), 0, 0x10, \ 113 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) 114 115 int 116 ne2000_attach(struct ne2000_softc *nsc, u_int8_t *myea) 117 { 118 struct dp8390_softc *dsc = &nsc->sc_dp8390; 119 bus_space_tag_t nict = dsc->sc_regt; 120 bus_space_handle_t nich = dsc->sc_regh; 121 bus_space_tag_t asict = nsc->sc_asict; 122 bus_space_handle_t asich = nsc->sc_asich; 123 u_int8_t romdata[16]; 124 int memstart, memsize, i, useword; 125 126 /* 127 * Detect it again unless caller specified it; this gives us 128 * the memory size. 129 */ 130 if (nsc->sc_type == NE2000_TYPE_UNKNOWN) 131 nsc->sc_type = ne2000_detect(nict, nich, asict, asich); 132 133 /* 134 * 8k of memory for NE1000, 16k for NE2000 and 24k for the 135 * card uses DL10019. 136 */ 137 switch (nsc->sc_type) { 138 case NE2000_TYPE_UNKNOWN: 139 default: 140 aprint_error_dev(dsc->sc_dev, "where did the card go?\n"); 141 return (1); 142 case NE2000_TYPE_NE1000: 143 memstart = 8192; 144 memsize = 8192; 145 useword = 0; 146 break; 147 case NE2000_TYPE_NE2000: 148 case NE2000_TYPE_AX88190: /* XXX really? */ 149 case NE2000_TYPE_AX88790: 150 #if NRTL80X9 > 0 151 case NE2000_TYPE_RTL8019: 152 #endif 153 memstart = 16384; 154 memsize = 16384; 155 useword = 1; 156 if ( 157 #ifdef NE2000_DETECT_8BIT 158 ne2000_detect_8bit(nict, nich, asict, asich) || 159 #endif 160 (nsc->sc_quirk & NE2000_QUIRK_8BIT) != 0) { 161 /* in 8 bit mode, only 8KB memory can be used */ 162 memsize = 8192; 163 useword = 0; 164 } 165 break; 166 case NE2000_TYPE_DL10019: 167 case NE2000_TYPE_DL10022: 168 memstart = 8192 * 3; 169 memsize = 8192 * 3; 170 useword = 1; 171 break; 172 } 173 174 nsc->sc_useword = useword; 175 #if NRTL80X9 > 0 176 if (nsc->sc_type == NE2000_TYPE_RTL8019) { 177 dsc->init_card = rtl80x9_init_card; 178 dsc->sc_media_init = rtl80x9_media_init; 179 dsc->sc_mediachange = rtl80x9_mediachange; 180 dsc->sc_mediastatus = rtl80x9_mediastatus; 181 } 182 #endif 183 184 dsc->cr_proto = ED_CR_RD2; 185 if (nsc->sc_type == NE2000_TYPE_AX88190 || 186 nsc->sc_type == NE2000_TYPE_AX88790) { 187 dsc->rcr_proto = ED_RCR_INTT; 188 dsc->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 189 } else 190 dsc->rcr_proto = 0; 191 192 /* 193 * DCR gets: 194 * 195 * FIFO threshold to 8, No auto-init Remote DMA, 196 * byte order=80x86. 197 * 198 * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA. 199 */ 200 dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 201 202 dsc->test_mem = ne2000_test_mem; 203 dsc->ring_copy = ne2000_ring_copy; 204 dsc->write_mbuf = ne2000_write_mbuf; 205 dsc->read_hdr = ne2000_read_hdr; 206 207 /* Registers are linear. */ 208 for (i = 0; i < 16; i++) 209 dsc->sc_reg_map[i] = i; 210 211 /* 212 * NIC memory doens't start at zero on an NE board. 213 * The start address is tied to the bus width. 214 */ 215 #ifdef GWETHER 216 { 217 int x; 218 int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], 219 tbuf[ED_PAGE_SIZE]; 220 221 memstart = 0; 222 for (i = 0; i < ED_PAGE_SIZE; i++) 223 pbuf0[i] = 0; 224 225 /* Search for the start of RAM. */ 226 for (x = 1; x < 256; x++) { 227 ne2000_writemem(nict, nich, asict, asich, pbuf0, 228 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 229 ne2000_readmem(nict, nich, asict, asich, 230 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 231 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 232 for (i = 0; i < ED_PAGE_SIZE; i++) 233 pbuf[i] = 255 - x; 234 ne2000_writemem(nict, nich, asict, asich, 235 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 236 useword, 0); 237 ne2000_readmem(nict, nich, asict, asich, 238 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 239 useword); 240 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 241 memstart = x << ED_PAGE_SHIFT; 242 memsize = ED_PAGE_SIZE; 243 break; 244 } 245 } 246 } 247 248 if (memstart == 0) { 249 aprint_error_dev(&dsc->sc_dev, "cannot find start of RAM\n"); 250 return (1); 251 } 252 253 /* Search for the end of RAM. */ 254 for (++x; x < 256; x++) { 255 ne2000_writemem(nict, nich, asict, asich, pbuf0, 256 x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0); 257 ne2000_readmem(nict, nich, asict, asich, 258 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword); 259 if (memcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 260 for (i = 0; i < ED_PAGE_SIZE; i++) 261 pbuf[i] = 255 - x; 262 ne2000_writemem(nict, nich, asict, asich, 263 pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE, 264 useword, 0); 265 ne2000_readmem(nict, nich, asict, asich, 266 x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, 267 useword); 268 if (memcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 269 memsize += ED_PAGE_SIZE; 270 else 271 break; 272 } else 273 break; 274 } 275 276 printf("%s: RAM start 0x%x, size %d\n", 277 device_xname(&dsc->sc_dev), memstart, memsize); 278 } 279 #endif /* GWETHER */ 280 dsc->mem_start = memstart; 281 282 dsc->mem_size = memsize; 283 284 if (myea == NULL) { 285 /* Read the station address. */ 286 if (nsc->sc_type == NE2000_TYPE_AX88190 || 287 nsc->sc_type == NE2000_TYPE_AX88790) { 288 /* Select page 0 registers. */ 289 NIC_BARRIER(nict, nich); 290 bus_space_write_1(nict, nich, ED_P0_CR, 291 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 292 NIC_BARRIER(nict, nich); 293 /* Select word transfer. */ 294 bus_space_write_1(nict, nich, ED_P0_DCR, 295 useword ? ED_DCR_WTS : 0); 296 NIC_BARRIER(nict, nich); 297 ne2000_readmem(nict, nich, asict, asich, 298 AX88190_NODEID_OFFSET, dsc->sc_enaddr, 299 ETHER_ADDR_LEN, useword); 300 } else { 301 bool ne1000 = (nsc->sc_type == NE2000_TYPE_NE1000); 302 303 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 304 sizeof(romdata), useword); 305 for (i = 0; i < ETHER_ADDR_LEN; i++) 306 dsc->sc_enaddr[i] = 307 romdata[i * (ne1000 ? 1 : 2)]; 308 } 309 } else 310 memcpy(dsc->sc_enaddr, myea, sizeof(dsc->sc_enaddr)); 311 312 /* Clear any pending interrupts that might have occurred above. */ 313 NIC_BARRIER(nict, nich); 314 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 315 NIC_BARRIER(nict, nich); 316 317 if (dsc->sc_media_init == NULL) 318 dsc->sc_media_init = dp8390_media_init; 319 320 if (dp8390_config(dsc)) { 321 aprint_error_dev(dsc->sc_dev, "setup failed\n"); 322 return (1); 323 } 324 325 return (0); 326 } 327 328 /* 329 * Detect an NE-2000 or compatible. Returns a model code. 330 */ 331 int 332 ne2000_detect(bus_space_tag_t nict, bus_space_handle_t nich, bus_space_tag_t asict, bus_space_handle_t asich) 333 { 334 static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern"; 335 u_int8_t test_buffer[32], tmp; 336 int i, rv = NE2000_TYPE_UNKNOWN; 337 int useword; 338 339 /* Reset the board. */ 340 #ifdef GWETHER 341 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0); 342 ASIC_BARRIER(asict, asich); 343 delay(200); 344 #endif /* GWETHER */ 345 tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET); 346 ASIC_BARRIER(asict, asich); 347 delay(10000); 348 349 /* 350 * I don't know if this is necessary; probably cruft leftover from 351 * Clarkson packet driver code. Doesn't do a thing on the boards I've 352 * tested. -DG [note that a outb(0x84, 0) seems to work here, and is 353 * non-invasive...but some boards don't seem to reset and I don't have 354 * complete documentation on what the 'right' thing to do is...so we do 355 * the invasive thing for now. Yuck.] 356 */ 357 bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp); 358 ASIC_BARRIER(asict, asich); 359 delay(5000); 360 361 /* 362 * This is needed because some NE clones apparently don't reset the 363 * NIC properly (or the NIC chip doesn't reset fully on power-up). 364 * XXX - this makes the probe invasive! Done against my better 365 * judgement. -DLG 366 */ 367 bus_space_write_1(nict, nich, ED_P0_CR, 368 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP); 369 NIC_BARRIER(nict, nich); 370 371 delay(5000); 372 373 /* 374 * Generic probe routine for testing for the existence of a DS8390. 375 * Must be performed after the NIC has just been reset. This 376 * works by looking at certain register values that are guaranteed 377 * to be initialized a certain way after power-up or reset. 378 * 379 * Specifically: 380 * 381 * Register reset bits set bits 382 * -------- ---------- -------- 383 * CR TXP, STA RD2, STP 384 * ISR RST 385 * IMR <all> 386 * DCR LAS 387 * TCR LB1, LB0 388 * 389 * We only look at CR and ISR, however, since looking at the others 390 * would require changing register pages, which would be intrusive 391 * if this isn't an 8390. 392 */ 393 394 tmp = bus_space_read_1(nict, nich, ED_P0_CR); 395 if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 396 (ED_CR_RD2 | ED_CR_STP)) 397 goto out; 398 399 tmp = bus_space_read_1(nict, nich, ED_P0_ISR); 400 if ((tmp & ED_ISR_RST) != ED_ISR_RST) 401 goto out; 402 403 bus_space_write_1(nict, nich, 404 ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 405 NIC_BARRIER(nict, nich); 406 407 for (i = 0; i < 100; i++) { 408 if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) == 409 ED_ISR_RST) { 410 /* Ack the reset bit. */ 411 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST); 412 NIC_BARRIER(nict, nich); 413 break; 414 } 415 delay(100); 416 } 417 418 #if 0 419 /* XXX */ 420 if (i == 100) 421 goto out; 422 #endif 423 424 /* 425 * Test the ability to read and write to the NIC memory. This has 426 * the side effect of determining if this is an NE1000 or an NE2000. 427 */ 428 429 /* 430 * This prevents packets from being stored in the NIC memory when 431 * the readmem routine turns on the start bit in the CR. 432 */ 433 bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON); 434 NIC_BARRIER(nict, nich); 435 436 /* Temporarily initialize DCR for byte operations. */ 437 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 438 439 bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT); 440 bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT); 441 442 /* 443 * Write a test pattern in byte mode. If this fails, then there 444 * probably isn't any memory at 8k - which likely means that the 445 * board is an NE2000. 446 */ 447 ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192, 448 sizeof(test_pattern), 0, 1); 449 ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer, 450 sizeof(test_buffer), 0); 451 452 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { 453 /* We're an NE1000. */ 454 rv = NE2000_TYPE_NE1000; 455 goto out; 456 } 457 458 /* not an NE1000 - try NE2000 */ 459 460 /* try 16 bit mode first */ 461 useword = 1; 462 463 #ifdef NE2000_DETECT_8BIT 464 /* 465 * Check bus type in EEPROM first because some NE2000 compatible wedges 466 * on 16 bit DMA access if the chip is configured in 8 bit mode. 467 */ 468 if (ne2000_detect_8bit(nict, nich, asict, asich)) 469 useword = 0; 470 #endif 471 again: 472 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS | 473 (useword ? ED_DCR_WTS : 0)); 474 bus_space_write_1(nict, nich, ED_P0_PSTART, 16384 >> ED_PAGE_SHIFT); 475 bus_space_write_1(nict, nich, ED_P0_PSTOP, 476 (16384 + (useword ? 16384 : 8192)) >> ED_PAGE_SHIFT); 477 478 /* 479 * Write the test pattern in word mode. If this also fails, 480 * then we don't know what this board is. 481 */ 482 ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384, 483 sizeof(test_pattern), useword, 0); 484 ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer, 485 sizeof(test_buffer), useword); 486 487 if (memcmp(test_pattern, test_buffer, sizeof(test_pattern)) != 0) { 488 if (useword == 1) { 489 /* try 8 bit mode */ 490 useword = 0; 491 goto again; 492 } 493 return NE2000_TYPE_UNKNOWN; /* not an NE2000 either */ 494 } 495 496 rv = NE2000_TYPE_NE2000; 497 498 #if NRTL80X9 > 0 499 /* Check for a Realtek RTL8019. */ 500 if (bus_space_read_1(nict, nich, NERTL_RTL0_8019ID0) == RTL0_8019ID0 && 501 bus_space_read_1(nict, nich, NERTL_RTL0_8019ID1) == RTL0_8019ID1) 502 rv = NE2000_TYPE_RTL8019; 503 #endif 504 505 out: 506 /* Clear any pending interrupts that might have occurred above. */ 507 NIC_BARRIER(nict, nich); 508 bus_space_write_1(nict, nich, ED_P0_ISR, 0xff); 509 510 return (rv); 511 } 512 513 #ifdef NE2000_DETECT_8BIT 514 static bool 515 ne2000_detect_8bit(bus_space_tag_t nict, bus_space_handle_t nich, 516 bus_space_tag_t asict, bus_space_handle_t asich) 517 { 518 bool is8bit; 519 uint8_t romdata[32]; 520 521 is8bit = false; 522 523 /* Set DCR for 8 bit DMA. */ 524 bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 525 /* Read PROM area. */ 526 ne2000_readmem(nict, nich, asict, asich, 0, romdata, 527 sizeof(romdata), 0); 528 if (romdata[28] == 'B' && romdata[30] == 'B') { 529 /* 'B' (0x42) in 8 bit mode, 'W' (0x57) in 16 bit mode */ 530 is8bit = true; 531 } 532 if (!is8bit) { 533 /* not in 8 bit mode; put back DCR setting for 16 bit DMA */ 534 bus_space_write_1(nict, nich, ED_P0_DCR, 535 ED_DCR_FT1 | ED_DCR_LS | ED_DCR_WTS); 536 } 537 538 return is8bit; 539 } 540 #endif 541 542 /* 543 * Write an mbuf chain to the destination NIC memory address using programmed 544 * I/O. 545 */ 546 int 547 ne2000_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) 548 { 549 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 550 bus_space_tag_t nict = sc->sc_regt; 551 bus_space_handle_t nich = sc->sc_regh; 552 bus_space_tag_t asict = nsc->sc_asict; 553 bus_space_handle_t asich = nsc->sc_asich; 554 int savelen, padlen; 555 int maxwait = 100; /* about 120us */ 556 557 savelen = m->m_pkthdr.len; 558 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 559 padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - savelen; 560 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN; 561 } else 562 padlen = 0; 563 564 565 /* Select page 0 registers. */ 566 NIC_BARRIER(nict, nich); 567 bus_space_write_1(nict, nich, ED_P0_CR, 568 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 569 NIC_BARRIER(nict, nich); 570 571 /* Reset remote DMA complete flag. */ 572 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 573 NIC_BARRIER(nict, nich); 574 575 /* Set up DMA byte count. */ 576 bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen); 577 bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8); 578 579 /* Set up destination address in NIC mem. */ 580 bus_space_write_1(nict, nich, ED_P0_RSAR0, buf); 581 bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8); 582 583 /* Set remote DMA write. */ 584 NIC_BARRIER(nict, nich); 585 bus_space_write_1(nict, nich, 586 ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 587 NIC_BARRIER(nict, nich); 588 589 /* 590 * Transfer the mbuf chain to the NIC memory. NE2000 cards 591 * require that data be transferred as words, and only words, 592 * so that case requires some extra code to patch over odd-length 593 * mbufs. 594 */ 595 if (nsc->sc_useword == 0) { 596 /* byte ops are easy. */ 597 for (; m != 0; m = m->m_next) { 598 if (m->m_len) { 599 bus_space_write_multi_1(asict, asich, 600 NE2000_ASIC_DATA, mtod(m, u_int8_t *), 601 m->m_len); 602 } 603 } 604 if (padlen) { 605 for(; padlen > 0; padlen--) 606 bus_space_write_1(asict, asich, 607 NE2000_ASIC_DATA, 0); 608 } 609 } else { 610 /* word ops are a bit trickier. */ 611 u_int8_t *data, savebyte[2]; 612 int l, leftover; 613 #ifdef DIAGNOSTIC 614 u_int8_t *lim; 615 #endif 616 /* Start out with no leftover data. */ 617 leftover = 0; 618 savebyte[0] = savebyte[1] = 0; 619 620 for (; m != 0; m = m->m_next) { 621 l = m->m_len; 622 if (l == 0) 623 continue; 624 data = mtod(m, u_int8_t *); 625 #ifdef DIAGNOSTIC 626 lim = data + l; 627 #endif 628 while (l > 0) { 629 if (leftover) { 630 /* 631 * Data left over (from mbuf or 632 * realignment). Buffer the next 633 * byte, and write it and the 634 * leftover data out. 635 */ 636 savebyte[1] = *data++; 637 l--; 638 bus_space_write_stream_2(asict, asich, 639 NE2000_ASIC_DATA, 640 *(u_int16_t *)savebyte); 641 leftover = 0; 642 } else if (BUS_SPACE_ALIGNED_POINTER(data, 643 u_int16_t) == 0) { 644 /* 645 * Unaligned data; buffer the next 646 * byte. 647 */ 648 savebyte[0] = *data++; 649 l--; 650 leftover = 1; 651 } else { 652 /* 653 * Aligned data; output contiguous 654 * words as much as we can, then 655 * buffer the remaining byte, if any. 656 */ 657 leftover = l & 1; 658 l &= ~1; 659 bus_space_write_multi_stream_2(asict, 660 asich, NE2000_ASIC_DATA, 661 (u_int16_t *)data, l >> 1); 662 data += l; 663 if (leftover) 664 savebyte[0] = *data++; 665 l = 0; 666 } 667 } 668 if (l < 0) 669 panic("ne2000_write_mbuf: negative len"); 670 #ifdef DIAGNOSTIC 671 if (data != lim) 672 panic("ne2000_write_mbuf: data != lim"); 673 #endif 674 } 675 if (leftover) { 676 savebyte[1] = 0; 677 bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA, 678 *(u_int16_t *)savebyte); 679 } 680 if (padlen) { 681 for(; padlen > 1; padlen -= 2) 682 bus_space_write_stream_2(asict, asich, 683 NE2000_ASIC_DATA, 0); 684 } 685 } 686 NIC_BARRIER(nict, nich); 687 688 /* AX88796 doesn't seem to have remote DMA complete */ 689 if (sc->sc_flags & DP8390_NO_REMOTE_DMA_COMPLETE) 690 return(savelen); 691 692 /* 693 * Wait for remote DMA to complete. This is necessary because on the 694 * transmit side, data is handled internally by the NIC in bursts, and 695 * we can't start another remote DMA until this one completes. Not 696 * waiting causes really bad things to happen - like the NIC wedging 697 * the bus. 698 */ 699 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 700 ED_ISR_RDC) && --maxwait) { 701 (void)bus_space_read_1(nict, nich, ED_P0_CRDA1); 702 (void)bus_space_read_1(nict, nich, ED_P0_CRDA0); 703 NIC_BARRIER(nict, nich); 704 DELAY(1); 705 } 706 707 if (maxwait == 0) { 708 log(LOG_WARNING, 709 "%s: remote transmit DMA failed to complete\n", 710 device_xname(sc->sc_dev)); 711 dp8390_reset(sc); 712 } 713 714 return (savelen); 715 } 716 717 /* 718 * Given a source and destination address, copy 'amout' of a packet from 719 * the ring buffer into a linear destination buffer. Takes into account 720 * ring-wrap. 721 */ 722 int 723 ne2000_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount) 724 { 725 char *dst = dstv; 726 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 727 bus_space_tag_t nict = sc->sc_regt; 728 bus_space_handle_t nich = sc->sc_regh; 729 bus_space_tag_t asict = nsc->sc_asict; 730 bus_space_handle_t asich = nsc->sc_asich; 731 u_short tmp_amount; 732 int useword = nsc->sc_useword; 733 734 /* Does copy wrap to lower addr in ring buffer? */ 735 if (src + amount > sc->mem_end) { 736 tmp_amount = sc->mem_end - src; 737 738 /* Copy amount up to end of NIC memory. */ 739 ne2000_readmem(nict, nich, asict, asich, src, 740 (u_int8_t *)dst, tmp_amount, useword); 741 742 amount -= tmp_amount; 743 src = sc->mem_ring; 744 dst += tmp_amount; 745 } 746 747 ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst, 748 amount, useword); 749 750 return (src + amount); 751 } 752 753 void 754 ne2000_read_hdr(struct dp8390_softc *sc, int buf, struct dp8390_ring *hdr) 755 { 756 struct ne2000_softc *nsc = (struct ne2000_softc *)sc; 757 758 ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich, 759 buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring), 760 nsc->sc_useword); 761 #if BYTE_ORDER == BIG_ENDIAN 762 hdr->count = bswap16(hdr->count); 763 #endif 764 } 765 766 int 767 ne2000_test_mem(struct dp8390_softc *sc) 768 { 769 770 /* Noop. */ 771 return (0); 772 } 773 774 /* 775 * Given a NIC memory source address and a host memory destination address, 776 * copy 'amount' from NIC to host using programmed i/o. The 'amount' is 777 * rounded up to a word - ok as long as mbufs are word sized. 778 */ 779 void 780 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) 781 { 782 783 /* Select page 0 registers. */ 784 NIC_BARRIER(nict, nich); 785 bus_space_write_1(nict, nich, ED_P0_CR, 786 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 787 NIC_BARRIER(nict, nich); 788 789 /* Round up to a word. */ 790 amount = roundup2(amount, sizeof(uint16_t)); 791 792 /* Set up DMA byte count. */ 793 bus_space_write_1(nict, nich, ED_P0_RBCR0, amount); 794 bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8); 795 796 /* Set up source address in NIC mem. */ 797 bus_space_write_1(nict, nich, ED_P0_RSAR0, src); 798 bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8); 799 800 NIC_BARRIER(nict, nich); 801 bus_space_write_1(nict, nich, ED_P0_CR, 802 ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA); 803 804 ASIC_BARRIER(asict, asich); 805 if (useword) 806 bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 807 (u_int16_t *)dst, amount >> 1); 808 else 809 bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA, 810 dst, amount); 811 } 812 813 /* 814 * Stripped down routine for writing a linear buffer to NIC memory. Only 815 * used in the probe routine to test the memory. 'len' must be even. 816 */ 817 void 818 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) 819 { 820 int maxwait = 100; /* about 120us */ 821 822 /* Select page 0 registers. */ 823 NIC_BARRIER(nict, nich); 824 bus_space_write_1(nict, nich, ED_P0_CR, 825 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 826 NIC_BARRIER(nict, nich); 827 828 /* Reset remote DMA complete flag. */ 829 bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC); 830 NIC_BARRIER(nict, nich); 831 832 /* Set up DMA byte count. */ 833 bus_space_write_1(nict, nich, ED_P0_RBCR0, len); 834 bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8); 835 836 /* Set up destination address in NIC mem. */ 837 bus_space_write_1(nict, nich, ED_P0_RSAR0, dst); 838 bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8); 839 840 /* Set remote DMA write. */ 841 NIC_BARRIER(nict, nich); 842 bus_space_write_1(nict, nich, ED_P0_CR, 843 ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA); 844 NIC_BARRIER(nict, nich); 845 846 ASIC_BARRIER(asict, asich); 847 if (useword) 848 bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA, 849 (u_int16_t *)src, len >> 1); 850 else 851 bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA, 852 src, len); 853 ASIC_BARRIER(asict, asich); 854 855 /* 856 * Wait for remote DMA to complete. This is necessary because on the 857 * transmit side, data is handled internally by the NIC in bursts, and 858 * we can't start another remote DMA until this one completes. Not 859 * waiting causes really bad things to happen - like the NIC wedging 860 * the bus. 861 */ 862 while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) != 863 ED_ISR_RDC) && --maxwait) 864 DELAY(1); 865 866 if (!quiet && maxwait == 0) 867 printf("ne2000_writemem: failed to complete\n"); 868 } 869 870 int 871 ne2000_detach(struct ne2000_softc *sc, int flags) 872 { 873 874 return (dp8390_detach(&sc->sc_dp8390, flags)); 875 } 876 877 #ifdef IPKDB_NE 878 /* 879 * This code is essentially the same as ne2000_attach above. 880 */ 881 int 882 ne2000_ipkdb_attach(struct ipkdb_if *kip) 883 { 884 struct ne2000_softc *np = kip->port; 885 struct dp8390_softc *dp = &np->sc_dp8390; 886 bus_space_tag_t nict = dp->sc_regt; 887 bus_space_handle_t nich = dp->sc_regh; 888 bus_space_tag_t asict = np->sc_asict; 889 bus_space_handle_t asich = np->sc_asich; 890 int i, useword; 891 892 #ifdef GWETHER 893 /* Not supported (yet?) */ 894 return -1; 895 #endif 896 897 if (np->sc_type == NE2000_TYPE_UNKNOWN) 898 np->sc_type = ne2000_detect(nict, nich, asict, asich); 899 if (np->sc_type == NE2000_TYPE_UNKNOWN) 900 return -1; 901 902 switch (np->sc_type) { 903 case NE2000_TYPE_NE1000: 904 dp->mem_start = 8192; 905 dp->mem_size = 8192; 906 useword = 0; 907 kip->name = "ne1000"; 908 break; 909 case NE2000_TYPE_NE2000: 910 case NE2000_TYPE_AX88190: 911 case NE2000_TYPE_AX88790: 912 #if NRTL80X9 > 0 913 case NE2000_TYPE_RTL8019: 914 #endif 915 dp->mem_start = 16384; 916 dp->mem_size = 16384; 917 useword = 1; 918 if ( 919 #ifdef NE2000_DETECT_8BIT 920 ne2000_detect_8bit(nict, nich, asict, asich) || 921 #endif 922 (np->sc_quirk & NE2000_QUIRK_8BIT) != 0) { 923 /* in 8 bit mode, only 8KB memory can be used */ 924 dp->mem_size = 8192; 925 useword = 0; 926 } 927 kip->name = 928 (np->sc_type == NE2000_TYPE_AX88190 || 929 np->sc_type == NE2000_TYPE_AX88790) ? 930 "ax88190" : "ne2000"; 931 break; 932 case NE2000_TYPE_DL10019: 933 case NE2000_TYPE_DL10022: 934 dp->mem_start = 8192 * 3; 935 dp->mem_size = 8192 * 3; 936 useword = 1; 937 kip->name = (np->sc_type == NE2000_TYPE_DL10019) ? 938 "dl10022" : "dl10019"; 939 break; 940 default: 941 return -1; 942 break; 943 } 944 945 np->sc_useword = useword; 946 #if NRTL80X9 > 0 947 if (np->sc_type == NE2000_TYPE_RTL8019) { 948 dp->init_card = rtl80x9_init_card; 949 dp->sc_media_init = rtl80x9_media_init; 950 dp->sc_mediachange = rtl80x9_mediachange; 951 dp->sc_mediastatus = rtl80x9_mediastatus; 952 } 953 #endif 954 955 dp->cr_proto = ED_CR_RD2; 956 if (np->sc_type == NE2000_TYPE_AX88190 || 957 np->sc_type == NE2000_TYPE_AX88790) { 958 dp->rcr_proto = ED_RCR_INTT; 959 dp->sc_flags |= DP8390_DO_AX88190_WORKAROUND; 960 } else 961 dp->rcr_proto = 0; 962 dp->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0); 963 964 dp->test_mem = ne2000_test_mem; 965 dp->ring_copy = ne2000_ring_copy; 966 dp->write_mbuf = ne2000_write_mbuf; 967 dp->read_hdr = ne2000_read_hdr; 968 969 for (i = 0; i < 16; i++) 970 dp->sc_reg_map[i] = i; 971 972 if (dp8390_ipkdb_attach(kip)) 973 return -1; 974 975 dp->mem_ring = dp->mem_start 976 + ((dp->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 977 978 if (!(kip->flags & IPKDB_MYHW)) { 979 char romdata[16]; 980 981 /* Read the station address. */ 982 if (np->sc_type == NE2000_TYPE_AX88190 || 983 np->sc_type == NE2000_TYPE_AX88790) { 984 /* Select page 0 registers. */ 985 NIC_BARRIER(nict, nich); 986 bus_space_write_1(nict, nich, ED_P0_CR, 987 ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA); 988 NIC_BARRIER(nict, nich); 989 /* Select word transfer */ 990 bus_space_write_1(nict, nich, ED_P0_DCR, 991 useword ? ED_DCR_WTS : 0); 992 ne2000_readmem(nict, nich, asict, asich, 993 AX88190_NODEID_OFFSET, kip->myenetaddr, 994 ETHER_ADDR_LEN, useword); 995 } else { 996 bool ne1000 = (np->sc_type == NE2000_TYPE_NE1000); 997 998 ne2000_readmem(nict, nich, asict, asich, 999 0, romdata, sizeof romdata, useword); 1000 for (i = 0; i < ETHER_ADDR_LEN; i++) 1001 kip->myenetaddr[i] = 1002 romdata[i * (ne1000 ? 1 : 2)]; 1003 } 1004 kip->flags |= IPKDB_MYHW; 1005 1006 } 1007 dp8390_stop(dp); 1008 1009 return 0; 1010 } 1011 #endif 1012 1013 bool 1014 ne2000_suspend(device_t self, const pmf_qual_t *qual) 1015 { 1016 struct ne2000_softc *sc = device_private(self); 1017 struct dp8390_softc *dsc = &sc->sc_dp8390; 1018 int s; 1019 1020 s = splnet(); 1021 1022 dp8390_stop(dsc); 1023 dp8390_disable(dsc); 1024 1025 splx(s); 1026 return true; 1027 } 1028 1029 bool 1030 ne2000_resume(device_t self, const pmf_qual_t *qual) 1031 { 1032 struct ne2000_softc *sc = device_private(self); 1033 struct dp8390_softc *dsc = &sc->sc_dp8390; 1034 struct ifnet *ifp = &dsc->sc_ec.ec_if; 1035 int s; 1036 1037 s = splnet(); 1038 1039 if (ifp->if_flags & IFF_UP) { 1040 if (dp8390_enable(dsc) == 0) 1041 dp8390_init(dsc); 1042 } 1043 1044 splx(s); 1045 return true; 1046 } 1047
Indexes created Sun Oct 19 02:09:48 GMT 2025