1 /* $NetBSD: cs89x0.c,v 1.6 2002/05/21 02:47:04 augustss Exp $ */ 2 3 /* 4 * Copyright 1997 5 * Digital Equipment Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and 8 * copied only in accordance with the following terms and conditions. 9 * Subject to these conditions, you may download, copy, install, 10 * use, modify and distribute this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce 14 * and retain this copyright notice and list of conditions as 15 * they appear in the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Digital Equipment Corporation. Neither the "Digital Equipment 19 * Corporation" name nor any trademark or logo of Digital Equipment 20 * Corporation may be used to endorse or promote products derived 21 * from this software without the prior written permission of 22 * Digital Equipment Corporation. 23 * 24 * 3) This software is provided "AS-IS" and any express or implied 25 * warranties, including but not limited to, any implied warranties 26 * of merchantability, fitness for a particular purpose, or 27 * non-infringement are disclaimed. In no event shall DIGITAL be 28 * liable for any damages whatsoever, and in particular, DIGITAL 29 * shall not be liable for special, indirect, consequential, or 30 * incidental damages or damages for lost profits, loss of 31 * revenue or loss of use, whether such damages arise in contract, 32 * negligence, tort, under statute, in equity, at law or otherwise, 33 * even if advised of the possibility of such damage. 34 */ 35 36 /* 37 **++ 38 ** FACILITY 39 ** 40 ** Device Driver for the Crystal CS8900 ISA Ethernet Controller. 41 ** 42 ** ABSTRACT 43 ** 44 ** This module provides standard ethernet access for INET protocols 45 ** only. 46 ** 47 ** AUTHORS 48 ** 49 ** Peter Dettori SEA - Software Engineering. 50 ** 51 ** CREATION DATE: 52 ** 53 ** 13-Feb-1997. 54 ** 55 ** MODIFICATION HISTORY (Digital): 56 ** 57 ** Revision 1.27 1998/01/20 17:59:40 cgd 58 ** update for moved headers 59 ** 60 ** Revision 1.26 1998/01/12 19:29:36 cgd 61 ** use arm32/isa versions of isadma code. 62 ** 63 ** Revision 1.25 1997/12/12 01:35:27 cgd 64 ** convert to use new arp code (from Brini) 65 ** 66 ** Revision 1.24 1997/12/10 22:31:56 cgd 67 ** trim some fat (get rid of ability to explicitly supply enet addr, since 68 ** it was never used and added a bunch of code which really doesn't belong in 69 ** an enet driver), and clean up slightly. 70 ** 71 ** Revision 1.23 1997/10/06 16:42:12 cgd 72 ** copyright notices 73 ** 74 ** Revision 1.22 1997/06/20 19:38:01 chaiken 75 ** fixes some smartcard problems 76 ** 77 ** Revision 1.21 1997/06/10 02:56:20 grohn 78 ** Added call to ledNetActive 79 ** 80 ** Revision 1.20 1997/06/05 00:47:06 dettori 81 ** Changed cs_process_rx_dma to reset and re-initialise the 82 ** ethernet chip when DMA gets out of sync, or mbufs 83 ** can't be allocated. 84 ** 85 ** Revision 1.19 1997/06/03 03:09:58 dettori 86 ** Turn off sc_txbusy flag when a transmit underrun 87 ** occurs. 88 ** 89 ** Revision 1.18 1997/06/02 00:04:35 dettori 90 ** redefined the transmit table to get around the nfs_timer bug while we are 91 ** looking into it further. 92 ** 93 ** Also changed interrupts from EDGE to LEVEL. 94 ** 95 ** Revision 1.17 1997/05/27 23:31:01 dettori 96 ** Pulled out changes to DMAMODE defines. 97 ** 98 ** Revision 1.16 1997/05/23 04:25:16 cgd 99 ** reformat log so it fits in 80cols 100 ** 101 ** Revision 1.15 1997/05/23 04:22:18 cgd 102 ** remove the existing copyright notice (which Peter Dettori indicated 103 ** was incorrect, copied from an existing NetBSD file only so that the 104 ** file would have a copyright notice on it, and which he'd intended to 105 ** replace). Replace it with a Digital copyright notice, cloned from 106 ** ess.c. It's not really correct either (it indicates that the source 107 ** is Digital confidential!), but is better than nothing and more 108 ** correct than what was there before. 109 ** 110 ** Revision 1.14 1997/05/23 04:12:50 cgd 111 ** use an adaptive transmit start algorithm: start by telling the chip 112 ** to start transmitting after 381 bytes have been fed to it. if that 113 ** gets transmit underruns, ramp down to 1021 bytes then "whole 114 ** packet." If successful at a given level for a while, try the next 115 ** more agressive level. This code doesn't ever try to start 116 ** transmitting after 5 bytes have been sent to the NIC, because 117 ** that underruns rather regularly. The back-off and ramp-up mechanism 118 ** could probably be tuned a little bit, but this works well enough to 119 ** support > 1MB/s transmit rates on a clear ethernet (which is about 120 ** 20-25% better than the driver had previously been getting). 121 ** 122 ** Revision 1.13 1997/05/22 21:06:54 cgd 123 ** redo cs_copy_tx_frame() from scratch. It had a fatal flaw: it was blindly 124 ** casting from u_int8_t * to u_int16_t * without worrying about alignment 125 ** issues. This would cause bogus data to be spit out for mbufs with 126 ** misaligned data. For instance, it caused the following bits to appear 127 ** on the wire: 128 ** ... etBND 1S2C .SHA(K) R ... 129 ** 11112222333344445555 130 ** which should have appeared as: 131 ** ... NetBSD 1.2C (SHARK) ... 132 ** 11112222333344445555 133 ** Note the apparent 'rotate' of the bytes in the word, which was due to 134 ** incorrect unaligned accesses. This data corruption was the cause of 135 ** incoming telnet/rlogin hangs. 136 ** 137 ** Revision 1.12 1997/05/22 01:55:32 cgd 138 ** reformat log so it fits in 80cols 139 ** 140 ** Revision 1.11 1997/05/22 01:50:27 cgd 141 ** * enable input packet address checking in the BPF+IFF_PROMISCUOUS case, 142 ** so packets aimed at other hosts don't get sent to ether_input(). 143 ** * Add a static const char *rcsid initialized with an RCS Id tag, so that 144 ** you can easily tell (`strings`) what version of the driver is in your 145 ** kernel binary. 146 ** * get rid of ether_cmp(). It was inconsistently used, not necessarily 147 ** safe, and not really a performance win anyway. (It was only used when 148 ** setting up the multicast logical address filter, which is an 149 ** infrequent event. It could have been used in the IFF_PROMISCUOUS 150 ** address check above, but the benefit of it vs. memcmp would be 151 ** inconsequential, there.) Use memcmp() instead. 152 ** * restructure csStartOuput to avoid the following bugs in the case where 153 ** txWait was being set: 154 ** * it would accidentally drop the outgoing packet if told to wait 155 ** but the outgoing packet queue was empty. 156 ** * it would bpf_mtap() the outgoing packet multiple times (once for 157 ** each time it was told to wait), and would also recalculate 158 ** the length of the outgoing packet each time it was told to 159 ** wait. 160 ** While there, rename txWait to txLoop, since with the new structure of 161 ** the code, the latter name makes more sense. 162 ** 163 ** Revision 1.10 1997/05/19 02:03:20 cgd 164 ** Set RX_CTL in cs_set_ladr_filt(), rather than cs_initChip(). cs_initChip() 165 ** is the only caller of cs_set_ladr_filt(), and always calls it, so this 166 ** ends up being logically the same. In cs_set_ladr_filt(), if IFF_PROMISC 167 ** is set, enable promiscuous mode (and set IFF_ALLMULTI), otherwise behave 168 ** as before. 169 ** 170 ** Revision 1.9 1997/05/19 01:45:37 cgd 171 ** create a new function, cs_ether_input(), which does received-packet 172 ** BPF and ether_input processing. This code used to be in three places, 173 ** and centralizing it will make adding IFF_PROMISC support much easier. 174 ** Also, in cs_copy_tx_frame(), put it some (currently disabled) code to 175 ** do copies with bus_space_write_region_2(). It's more correct, and 176 ** potentially more efficient. That function needs to be gutted (to 177 ** deal properly with alignment issues, which it currently does wrong), 178 ** however, and the change doesn't gain much, so there's no point in 179 ** enabling it now. 180 ** 181 ** Revision 1.8 1997/05/19 01:17:10 cgd 182 ** fix a comment re: the setting of the TxConfig register. Clean up 183 ** interface counter maintenance (make it use standard idiom). 184 ** 185 **-- 186 */ 187 188 #include <sys/cdefs.h> 189 __KERNEL_RCSID(0, "$NetBSD: cs89x0.c,v 1.6 2002/05/21 02:47:04 augustss Exp $"); 190 191 #include "opt_inet.h" 192 193 #include <sys/param.h> 194 #include <sys/systm.h> 195 #include <sys/mbuf.h> 196 #include <sys/syslog.h> 197 #include <sys/socket.h> 198 #include <sys/device.h> 199 #include <sys/malloc.h> 200 #include <sys/ioctl.h> 201 #include <sys/errno.h> 202 203 #include "rnd.h" 204 #if NRND > 0 205 #include <sys/rnd.h> 206 #endif 207 208 #include <net/if.h> 209 #include <net/if_ether.h> 210 #include <net/if_media.h> 211 #ifdef INET 212 #include <netinet/in.h> 213 #include <netinet/if_inarp.h> 214 #endif 215 216 #include "bpfilter.h" 217 #if NBPFILTER > 0 218 #include <net/bpf.h> 219 #include <net/bpfdesc.h> 220 #endif 221 222 #include <uvm/uvm_extern.h> 223 224 #include <machine/bus.h> 225 #include <machine/intr.h> 226 227 #include <dev/ic/cs89x0reg.h> 228 #include <dev/ic/cs89x0var.h> 229 230 #ifdef SHARK 231 #include <shark/shark/sequoia.h> 232 #endif 233 234 /* 235 * MACRO DEFINITIONS 236 */ 237 #define CS_OUTPUT_LOOP_MAX 100 /* max times round notorious tx loop */ 238 239 /* 240 * FUNCTION PROTOTYPES 241 */ 242 void cs_get_default_media(struct cs_softc *); 243 int cs_get_params(struct cs_softc *); 244 int cs_get_enaddr(struct cs_softc *); 245 int cs_reset_chip(struct cs_softc *); 246 void cs_reset(void *); 247 int cs_ioctl(struct ifnet *, u_long, caddr_t); 248 void cs_initChip(struct cs_softc *); 249 void cs_buffer_event(struct cs_softc *, u_int16_t); 250 void cs_transmit_event(struct cs_softc *, u_int16_t); 251 void cs_receive_event(struct cs_softc *, u_int16_t); 252 void cs_process_receive(struct cs_softc *); 253 void cs_process_rx_early(struct cs_softc *); 254 void cs_start_output(struct ifnet *); 255 void cs_copy_tx_frame(struct cs_softc *, struct mbuf *); 256 void cs_set_ladr_filt(struct cs_softc *, struct ethercom *); 257 u_int16_t cs_hash_index(char *); 258 void cs_counter_event(struct cs_softc *, u_int16_t); 259 260 int cs_mediachange(struct ifnet *); 261 void cs_mediastatus(struct ifnet *, struct ifmediareq *); 262 263 static int cs_enable(struct cs_softc *); 264 static void cs_disable(struct cs_softc *); 265 static void cs_stop(struct ifnet *, int); 266 static void cs_power(int, void *); 267 268 /* 269 * GLOBAL DECLARATIONS 270 */ 271 272 /* 273 * Xmit-early table. 274 * 275 * To get better performance, we tell the chip to start packet 276 * transmission before the whole packet is copied to the chip. 277 * However, this can fail under load. When it fails, we back off 278 * to a safer setting for a little while. 279 * 280 * txcmd is the value of txcmd used to indicate when to start transmission. 281 * better is the next 'better' state in the table. 282 * better_count is the number of output packets before transition to the 283 * better state. 284 * worse is the next 'worse' state in the table. 285 * 286 * Transition to the next worse state happens automatically when a 287 * transmittion underrun occurs. 288 */ 289 struct cs_xmit_early { 290 u_int16_t txcmd; 291 int better; 292 int better_count; 293 int worse; 294 } cs_xmit_early_table[3] = { 295 { TX_CMD_START_381, 0, INT_MAX, 1, }, 296 { TX_CMD_START_1021, 0, 50000, 2, }, 297 { TX_CMD_START_ALL, 1, 5000, 2, }, 298 }; 299 300 int cs_default_media[] = { 301 IFM_ETHER|IFM_10_2, 302 IFM_ETHER|IFM_10_5, 303 IFM_ETHER|IFM_10_T, 304 IFM_ETHER|IFM_10_T|IFM_FDX, 305 }; 306 int cs_default_nmedia = sizeof(cs_default_media) / sizeof(cs_default_media[0]); 307 308 int 309 cs_attach(struct cs_softc *sc, u_int8_t *enaddr, int *media, 310 int nmedia, int defmedia) 311 { 312 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 313 const char *chipname, *medname; 314 u_int16_t reg; 315 int i; 316 317 /* Start out in IO mode */ 318 sc->sc_memorymode = FALSE; 319 320 /* make sure we're right */ 321 for (i = 0; i < 10000; i++) { 322 reg = CS_READ_PACKET_PAGE(sc, PKTPG_EISA_NUM); 323 if (reg == EISA_NUM_CRYSTAL) { 324 break; 325 } 326 } 327 if (i == 10000) { 328 printf("%s: wrong id(0x%x)\n", sc->sc_dev.dv_xname, reg); 329 return 1; /* XXX should panic? */ 330 } 331 332 reg = CS_READ_PACKET_PAGE(sc, PKTPG_PRODUCT_ID); 333 sc->sc_prodid = reg & PROD_ID_MASK; 334 sc->sc_prodrev = (reg & PROD_REV_MASK) >> 8; 335 336 switch (sc->sc_prodid) { 337 case PROD_ID_CS8900: 338 chipname = "CS8900"; 339 break; 340 case PROD_ID_CS8920: 341 chipname = "CS8920"; 342 break; 343 case PROD_ID_CS8920M: 344 chipname = "CS8920M"; 345 break; 346 default: 347 panic("cs_attach: impossible"); 348 } 349 350 /* 351 * the first thing to do is check that the mbuf cluster size is 352 * greater than the MTU for an ethernet frame. The code depends on 353 * this and to port this to a OS where this was not the case would 354 * not be straightforward. 355 * 356 * we need 1 byte spare because our 357 * packet read loop can overrun. 358 * and we may need pad bytes to align ip header. 359 */ 360 if (MCLBYTES < ETHER_MAX_LEN + 1 + 361 ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header)) { 362 printf("%s: MCLBYTES too small for Ethernet frame\n", 363 sc->sc_dev.dv_xname); 364 return 1; 365 } 366 367 /* Start out not transmitting */ 368 sc->sc_txbusy = FALSE; 369 370 /* Set up early transmit threshhold */ 371 sc->sc_xe_ent = 0; 372 sc->sc_xe_togo = cs_xmit_early_table[sc->sc_xe_ent].better_count; 373 374 /* Initialize ifnet structure. */ 375 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 376 ifp->if_softc = sc; 377 ifp->if_start = cs_start_output; 378 ifp->if_init = cs_init; 379 ifp->if_ioctl = cs_ioctl; 380 ifp->if_stop = cs_stop; 381 ifp->if_watchdog = NULL; /* no watchdog at this stage */ 382 ifp->if_flags = IFF_SIMPLEX | IFF_NOTRAILERS | 383 IFF_BROADCAST | IFF_MULTICAST; 384 IFQ_SET_READY(&ifp->if_snd); 385 386 /* Initialize ifmedia structures. */ 387 ifmedia_init(&sc->sc_media, 0, cs_mediachange, cs_mediastatus); 388 389 if (media != NULL) { 390 for (i = 0; i < nmedia; i++) 391 ifmedia_add(&sc->sc_media, media[i], 0, NULL); 392 ifmedia_set(&sc->sc_media, defmedia); 393 } else { 394 for (i = 0; i < cs_default_nmedia; i++) 395 ifmedia_add(&sc->sc_media, cs_default_media[i], 396 0, NULL); 397 cs_get_default_media(sc); 398 } 399 400 if ((sc->sc_cfgflags & CFGFLG_NOT_EEPROM) == 0) { 401 /* Get parameters from the EEPROM */ 402 if (cs_get_params(sc) == CS_ERROR) { 403 printf("%s: unable to get settings from EEPROM\n", 404 sc->sc_dev.dv_xname); 405 return 1; 406 } 407 } 408 409 if (enaddr != NULL) 410 memcpy(sc->sc_enaddr, enaddr, sizeof(sc->sc_enaddr)); 411 else if ((sc->sc_cfgflags & CFGFLG_NOT_EEPROM) == 0) { 412 /* Get and store the Ethernet address */ 413 if (cs_get_enaddr(sc) == CS_ERROR) { 414 printf("%s: unable to read Ethernet address\n", 415 sc->sc_dev.dv_xname); 416 return 1; 417 } 418 } else { 419 #if 1 420 int i; 421 uint v; 422 423 for (i = 0; i < 6; i += 2) { 424 v = CS_READ_PACKET_PAGE(sc, PKTPG_IND_ADDR + i); 425 sc->sc_enaddr[i + 0] = v; 426 sc->sc_enaddr[i + 1] = v >> 8; 427 } 428 #else 429 printf("%s: no Ethernet address!\n", sc->sc_dev.dv_xname); 430 return 1; 431 #endif 432 } 433 434 switch (IFM_SUBTYPE(sc->sc_media.ifm_cur->ifm_media)) { 435 case IFM_10_2: 436 medname = "BNC"; 437 break; 438 case IFM_10_5: 439 medname = "AUI"; 440 break; 441 case IFM_10_T: 442 if (sc->sc_media.ifm_cur->ifm_media & IFM_FDX) 443 medname = "UTP <full-duplex>"; 444 else 445 medname = "UTP"; 446 break; 447 default: 448 panic("cs_attach: impossible"); 449 } 450 printf("%s: %s rev. %c, address %s, media %s\n", sc->sc_dev.dv_xname, 451 chipname, sc->sc_prodrev + 'A', ether_sprintf(sc->sc_enaddr), 452 medname); 453 454 if (sc->sc_dma_attach) 455 (*sc->sc_dma_attach)(sc); 456 457 sc->sc_sh = shutdownhook_establish(cs_reset, sc); 458 if (sc->sc_sh == NULL) { 459 printf("%s: unable to establish shutdownhook\n", 460 sc->sc_dev.dv_xname); 461 cs_detach(sc); 462 return 1; 463 } 464 465 /* Attach the interface. */ 466 if_attach(ifp); 467 ether_ifattach(ifp, sc->sc_enaddr); 468 469 #if NRND > 0 470 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 471 RND_TYPE_NET, 0); 472 #endif 473 sc->sc_cfgflags |= CFGFLG_ATTACHED; 474 475 /* Reset the chip */ 476 if (cs_reset_chip(sc) == CS_ERROR) { 477 printf("%s: reset failed\n", sc->sc_dev.dv_xname); 478 cs_detach(sc); 479 return 1; 480 } 481 482 sc->sc_powerhook = powerhook_establish(cs_power, sc); 483 if (sc->sc_powerhook == 0) 484 printf("%s: warning: powerhook_establish failed\n", 485 sc->sc_dev.dv_xname); 486 487 return 0; 488 } 489 490 int 491 cs_detach(struct cs_softc *sc) 492 { 493 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 494 495 if (sc->sc_powerhook) { 496 powerhook_disestablish(sc->sc_powerhook); 497 sc->sc_powerhook = 0; 498 } 499 500 if (sc->sc_cfgflags & CFGFLG_ATTACHED) { 501 #if NRND > 0 502 rnd_detach_source(&sc->rnd_source); 503 #endif 504 ether_ifdetach(ifp); 505 if_detach(ifp); 506 sc->sc_cfgflags &= ~CFGFLG_ATTACHED; 507 } 508 509 if (sc->sc_sh != NULL) 510 shutdownhook_disestablish(sc->sc_sh); 511 512 #if 0 513 /* 514 * XXX not necessary 515 */ 516 if (sc->sc_cfgflags & CFGFLG_DMA_MODE) { 517 isa_dmamem_unmap(sc->sc_ic, sc->sc_drq, sc->sc_dmabase, sc->sc_dmasize); 518 isa_dmamem_free(sc->sc_ic, sc->sc_drq, sc->sc_dmaaddr, sc->sc_dmasize); 519 isa_dmamap_destroy(sc->sc_ic, sc->sc_drq); 520 sc->sc_cfgflags &= ~CFGFLG_DMA_MODE; 521 } 522 #endif 523 524 return 0; 525 } 526 527 void 528 cs_get_default_media(struct cs_softc *sc) 529 { 530 u_int16_t adp_cfg, xmit_ctl; 531 532 if (cs_verify_eeprom(sc) == CS_ERROR) { 533 printf("%s: cs_get_default_media: EEPROM missing or bad\n", 534 sc->sc_dev.dv_xname); 535 goto fakeit; 536 } 537 538 if (cs_read_eeprom(sc, EEPROM_ADPTR_CFG, &adp_cfg) == CS_ERROR) { 539 printf("%s: unable to read adapter config from EEPROM\n", 540 sc->sc_dev.dv_xname); 541 goto fakeit; 542 } 543 544 if (cs_read_eeprom(sc, EEPROM_XMIT_CTL, &xmit_ctl) == CS_ERROR) { 545 printf("%s: unable to read transmit control from EEPROM\n", 546 sc->sc_dev.dv_xname); 547 goto fakeit; 548 } 549 550 switch (adp_cfg & ADPTR_CFG_MEDIA) { 551 case ADPTR_CFG_AUI: 552 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_10_5); 553 break; 554 case ADPTR_CFG_10BASE2: 555 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_10_2); 556 break; 557 case ADPTR_CFG_10BASET: 558 default: 559 if (xmit_ctl & XMIT_CTL_FDX) 560 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_10_T|IFM_FDX); 561 else 562 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_10_T); 563 break; 564 } 565 return; 566 567 fakeit: 568 printf("%s: WARNING: default media setting may be inaccurate\n", 569 sc->sc_dev.dv_xname); 570 /* XXX Arbitrary... */ 571 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_10_T); 572 } 573 574 int 575 cs_get_params(struct cs_softc *sc) 576 { 577 u_int16_t isaConfig; 578 u_int16_t adapterConfig; 579 580 if (cs_verify_eeprom(sc) == CS_ERROR) { 581 printf("%s: cs_get_params: EEPROM missing or bad\n", 582 sc->sc_dev.dv_xname); 583 return (CS_ERROR); 584 } 585 586 /* Get ISA configuration from the EEPROM */ 587 if (cs_read_eeprom(sc, EEPROM_ISA_CFG, &isaConfig) == CS_ERROR) 588 goto eeprom_bad; 589 590 /* Get adapter configuration from the EEPROM */ 591 if (cs_read_eeprom(sc, EEPROM_ADPTR_CFG, &adapterConfig) == CS_ERROR) 592 goto eeprom_bad; 593 594 /* Copy the USE_SA flag */ 595 if (isaConfig & ISA_CFG_USE_SA) 596 sc->sc_cfgflags |= CFGFLG_USE_SA; 597 598 /* Copy the IO Channel Ready flag */ 599 if (isaConfig & ISA_CFG_IOCHRDY) 600 sc->sc_cfgflags |= CFGFLG_IOCHRDY; 601 602 /* Copy the DC/DC Polarity flag */ 603 if (adapterConfig & ADPTR_CFG_DCDC_POL) 604 sc->sc_cfgflags |= CFGFLG_DCDC_POL; 605 606 return (CS_OK); 607 608 eeprom_bad: 609 printf("%s: cs_get_params: unable to read from EEPROM\n", 610 sc->sc_dev.dv_xname); 611 return (CS_ERROR); 612 } 613 614 int 615 cs_get_enaddr(struct cs_softc *sc) 616 { 617 u_int16_t *myea; 618 619 if (cs_verify_eeprom(sc) == CS_ERROR) { 620 printf("%s: cs_get_enaddr: EEPROM missing or bad\n", 621 sc->sc_dev.dv_xname); 622 return (CS_ERROR); 623 } 624 625 myea = (u_int16_t *)sc->sc_enaddr; 626 627 /* Get Ethernet address from the EEPROM */ 628 /* XXX this will likely lose on a big-endian machine. -- cgd */ 629 if (cs_read_eeprom(sc, EEPROM_IND_ADDR_H, &myea[0]) == CS_ERROR) 630 goto eeprom_bad; 631 if (cs_read_eeprom(sc, EEPROM_IND_ADDR_M, &myea[1]) == CS_ERROR) 632 goto eeprom_bad; 633 if (cs_read_eeprom(sc, EEPROM_IND_ADDR_L, &myea[2]) == CS_ERROR) 634 goto eeprom_bad; 635 636 return (CS_OK); 637 638 eeprom_bad: 639 printf("%s: cs_get_enaddr: unable to read from EEPROM\n", 640 sc->sc_dev.dv_xname); 641 return (CS_ERROR); 642 } 643 644 int 645 cs_reset_chip(struct cs_softc *sc) 646 { 647 int intState; 648 int x; 649 650 /* Disable interrupts at the CPU so reset command is atomic */ 651 intState = splnet(); 652 653 /* 654 * We are now resetting the chip 655 * 656 * A spurious interrupt is generated by the chip when it is reset. This 657 * variable informs the interrupt handler to ignore this interrupt. 658 */ 659 sc->sc_resetting = TRUE; 660 661 /* Issue a reset command to the chip */ 662 CS_WRITE_PACKET_PAGE(sc, PKTPG_SELF_CTL, SELF_CTL_RESET); 663 664 /* Re-enable interrupts at the CPU */ 665 splx(intState); 666 667 /* The chip is always in IO mode after a reset */ 668 sc->sc_memorymode = FALSE; 669 670 /* If transmission was in progress, it is not now */ 671 sc->sc_txbusy = FALSE; 672 673 /* 674 * there was a delay(125); here, but it seems uneccesary 125 usec is 675 * 1/8000 of a second, not 1/8 of a second. the data sheet advises 676 * 1/10 of a second here, but the SI_BUSY and INIT_DONE loops below 677 * should be sufficient. 678 */ 679 680 /* Transition SBHE to switch chip from 8-bit to 16-bit */ 681 IO_READ_1(sc, PORT_PKTPG_PTR + 0); 682 IO_READ_1(sc, PORT_PKTPG_PTR + 1); 683 IO_READ_1(sc, PORT_PKTPG_PTR + 0); 684 IO_READ_1(sc, PORT_PKTPG_PTR + 1); 685 686 /* Wait until the EEPROM is not busy */ 687 for (x = 0; x < MAXLOOP; x++) { 688 if (!(CS_READ_PACKET_PAGE(sc, PKTPG_SELF_ST) & SELF_ST_SI_BUSY)) 689 break; 690 } 691 692 if (x == MAXLOOP) 693 return CS_ERROR; 694 695 /* Wait until initialization is done */ 696 for (x = 0; x < MAXLOOP; x++) { 697 if (CS_READ_PACKET_PAGE(sc, PKTPG_SELF_ST) & SELF_ST_INIT_DONE) 698 break; 699 } 700 701 if (x == MAXLOOP) 702 return CS_ERROR; 703 704 /* Reset is no longer in progress */ 705 sc->sc_resetting = FALSE; 706 707 return CS_OK; 708 } 709 710 int 711 cs_verify_eeprom(struct cs_softc *sc) 712 { 713 u_int16_t self_status; 714 715 /* Verify that the EEPROM is present and OK */ 716 self_status = CS_READ_PACKET_PAGE_IO(sc, PKTPG_SELF_ST); 717 if (((self_status & SELF_ST_EEP_PRES) && 718 (self_status & SELF_ST_EEP_OK)) == 0) 719 return (CS_ERROR); 720 721 return (CS_OK); 722 } 723 724 int 725 cs_read_eeprom(struct cs_softc *sc, int offset, u_int16_t *pValue) 726 { 727 int x; 728 729 /* Ensure that the EEPROM is not busy */ 730 for (x = 0; x < MAXLOOP; x++) { 731 if (!(CS_READ_PACKET_PAGE_IO(sc, PKTPG_SELF_ST) & 732 SELF_ST_SI_BUSY)) 733 break; 734 } 735 736 if (x == MAXLOOP) 737 return (CS_ERROR); 738 739 /* Issue the command to read the offset within the EEPROM */ 740 CS_WRITE_PACKET_PAGE_IO(sc, PKTPG_EEPROM_CMD, 741 offset | EEPROM_CMD_READ); 742 743 /* Wait until the command is completed */ 744 for (x = 0; x < MAXLOOP; x++) { 745 if (!(CS_READ_PACKET_PAGE_IO(sc, PKTPG_SELF_ST) & 746 SELF_ST_SI_BUSY)) 747 break; 748 } 749 750 if (x == MAXLOOP) 751 return (CS_ERROR); 752 753 /* Get the EEPROM data from the EEPROM Data register */ 754 *pValue = CS_READ_PACKET_PAGE_IO(sc, PKTPG_EEPROM_DATA); 755 756 return (CS_OK); 757 } 758 759 void 760 cs_initChip(struct cs_softc *sc) 761 { 762 u_int16_t busCtl; 763 u_int16_t selfCtl; 764 u_int16_t v; 765 u_int16_t isaId; 766 int i; 767 int media = IFM_SUBTYPE(sc->sc_media.ifm_cur->ifm_media); 768 769 /* Disable reception and transmission of frames */ 770 CS_WRITE_PACKET_PAGE(sc, PKTPG_LINE_CTL, 771 CS_READ_PACKET_PAGE(sc, PKTPG_LINE_CTL) & 772 ~LINE_CTL_RX_ON & ~LINE_CTL_TX_ON); 773 774 /* Disable interrupt at the chip */ 775 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 776 CS_READ_PACKET_PAGE(sc, PKTPG_BUS_CTL) & ~BUS_CTL_INT_ENBL); 777 778 /* If IOCHRDY is enabled then clear the bit in the busCtl register */ 779 busCtl = CS_READ_PACKET_PAGE(sc, PKTPG_BUS_CTL); 780 if (sc->sc_cfgflags & CFGFLG_IOCHRDY) { 781 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 782 busCtl & ~BUS_CTL_IOCHRDY); 783 } else { 784 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 785 busCtl | BUS_CTL_IOCHRDY); 786 } 787 788 /* Set the Line Control register to match the media type */ 789 if (media == IFM_10_T) 790 CS_WRITE_PACKET_PAGE(sc, PKTPG_LINE_CTL, LINE_CTL_10BASET); 791 else 792 CS_WRITE_PACKET_PAGE(sc, PKTPG_LINE_CTL, LINE_CTL_AUI_ONLY); 793 794 /* 795 * Set the BSTATUS/HC1 pin to be used as HC1. HC1 is used to 796 * enable the DC/DC converter 797 */ 798 selfCtl = SELF_CTL_HC1E; 799 800 /* If the media type is 10Base2 */ 801 if (media == IFM_10_2) { 802 /* 803 * Enable the DC/DC converter if it has a low enable. 804 */ 805 if ((sc->sc_cfgflags & CFGFLG_DCDC_POL) == 0) 806 /* 807 * Set the HCB1 bit, which causes the HC1 pin to go 808 * low. 809 */ 810 selfCtl |= SELF_CTL_HCB1; 811 } else { /* Media type is 10BaseT or AUI */ 812 /* 813 * Disable the DC/DC converter if it has a high enable. 814 */ 815 if ((sc->sc_cfgflags & CFGFLG_DCDC_POL) != 0) { 816 /* 817 * Set the HCB1 bit, which causes the HC1 pin to go 818 * low. 819 */ 820 selfCtl |= SELF_CTL_HCB1; 821 } 822 } 823 CS_WRITE_PACKET_PAGE(sc, PKTPG_SELF_CTL, selfCtl); 824 825 /* enable normal link pulse */ 826 if (sc->sc_prodid == PROD_ID_CS8920 || sc->sc_prodid == PROD_ID_CS8920M) 827 CS_WRITE_PACKET_PAGE(sc, PKTPG_AUTONEG_CTL, AUTOCTL_NLP_ENABLE); 828 829 /* Enable full-duplex, if appropriate */ 830 if (sc->sc_media.ifm_cur->ifm_media & IFM_FDX) 831 CS_WRITE_PACKET_PAGE(sc, PKTPG_TEST_CTL, TEST_CTL_FDX); 832 833 /* RX_CTL set in cs_set_ladr_filt(), below */ 834 835 /* enable all transmission interrupts */ 836 CS_WRITE_PACKET_PAGE(sc, PKTPG_TX_CFG, TX_CFG_ALL_IE); 837 838 /* Accept all receive interrupts */ 839 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, RX_CFG_ALL_IE); 840 841 /* 842 * Configure Operational Modes 843 * 844 * I have turned off the BUF_CFG_RX_MISS_IE, to speed things up, this is 845 * a better way to do it because the card has a counter which can be 846 * read to update the RX_MISS counter. This saves many interupts. 847 * 848 * I have turned on the tx and rx overflow interupts to counter using 849 * the receive miss interrupt. This is a better estimate of errors 850 * and requires lower system overhead. 851 */ 852 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUF_CFG, BUF_CFG_TX_UNDR_IE | 853 BUF_CFG_RX_DMA_IE); 854 855 if (sc->sc_dma_chipinit) 856 (*sc->sc_dma_chipinit)(sc); 857 858 /* If memory mode is enabled */ 859 if (sc->sc_cfgflags & CFGFLG_MEM_MODE) { 860 /* If external logic is present for address decoding */ 861 if (CS_READ_PACKET_PAGE(sc, PKTPG_SELF_ST) & SELF_ST_EL_PRES) { 862 /* 863 * Program the external logic to decode address bits 864 * SA20-SA23 865 */ 866 CS_WRITE_PACKET_PAGE(sc, PKTPG_EEPROM_CMD, 867 ((sc->sc_pktpgaddr & 0xffffff) >> 20) | 868 EEPROM_CMD_ELSEL); 869 } 870 871 /* 872 * Write the packet page base physical address to the memory 873 * base register. 874 */ 875 CS_WRITE_PACKET_PAGE(sc, PKTPG_MEM_BASE + 0, 876 sc->sc_pktpgaddr & 0xFFFF); 877 CS_WRITE_PACKET_PAGE(sc, PKTPG_MEM_BASE + 2, 878 sc->sc_pktpgaddr >> 16); 879 busCtl = BUS_CTL_MEM_MODE; 880 881 /* tell the chip to read the addresses off the SA pins */ 882 if (sc->sc_cfgflags & CFGFLG_USE_SA) { 883 busCtl |= BUS_CTL_USE_SA; 884 } 885 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 886 CS_READ_PACKET_PAGE(sc, PKTPG_BUS_CTL) | busCtl); 887 888 /* We are in memory mode now! */ 889 sc->sc_memorymode = TRUE; 890 891 /* 892 * wait here (10ms) for the chip to swap over. this is the 893 * maximum time that this could take. 894 */ 895 delay(10000); 896 897 /* Verify that we can read from the chip */ 898 isaId = CS_READ_PACKET_PAGE(sc, PKTPG_EISA_NUM); 899 900 /* 901 * As a last minute sanity check before actually using mapped 902 * memory we verify that we can read the isa number from the 903 * chip in memory mode. 904 */ 905 if (isaId != EISA_NUM_CRYSTAL) { 906 printf("%s: failed to enable memory mode\n", 907 sc->sc_dev.dv_xname); 908 sc->sc_memorymode = FALSE; 909 } else { 910 /* 911 * we are in memory mode so if we aren't using DMA, 912 * then program the chip to interrupt early. 913 */ 914 if ((sc->sc_cfgflags & CFGFLG_DMA_MODE) == 0) { 915 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUF_CFG, 916 BUF_CFG_RX_DEST_IE | 917 BUF_CFG_RX_MISS_OVER_IE | 918 BUF_CFG_TX_COL_OVER_IE); 919 } 920 } 921 922 } 923 924 /* Put Ethernet address into the Individual Address register */ 925 for (i = 0; i < 6; i += 2) { 926 v = sc->sc_enaddr[i + 0] | (sc->sc_enaddr[i + 1]) << 8; 927 CS_WRITE_PACKET_PAGE(sc, PKTPG_IND_ADDR + i, v); 928 } 929 930 if (sc->sc_irq != -1) { 931 /* Set the interrupt level in the chip */ 932 if (sc->sc_prodid == PROD_ID_CS8900) { 933 if (sc->sc_irq == 5) { 934 CS_WRITE_PACKET_PAGE(sc, PKTPG_INT_NUM, 3); 935 } else { 936 CS_WRITE_PACKET_PAGE(sc, PKTPG_INT_NUM, (sc->sc_irq) - 10); 937 } 938 } 939 else { /* CS8920 */ 940 CS_WRITE_PACKET_PAGE(sc, PKTPG_8920_INT_NUM, sc->sc_irq); 941 } 942 } 943 944 /* write the multicast mask to the address filter register */ 945 cs_set_ladr_filt(sc, &sc->sc_ethercom); 946 947 /* Enable reception and transmission of frames */ 948 CS_WRITE_PACKET_PAGE(sc, PKTPG_LINE_CTL, 949 CS_READ_PACKET_PAGE(sc, PKTPG_LINE_CTL) | 950 LINE_CTL_RX_ON | LINE_CTL_TX_ON); 951 952 /* Enable interrupt at the chip */ 953 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 954 CS_READ_PACKET_PAGE(sc, PKTPG_BUS_CTL) | BUS_CTL_INT_ENBL); 955 } 956 957 int 958 cs_init(struct ifnet *ifp) 959 { 960 int intState; 961 int error = CS_OK; 962 struct cs_softc *sc = ifp->if_softc; 963 964 if (cs_enable(sc)) 965 goto out; 966 967 cs_stop(ifp, 0); 968 969 intState = splnet(); 970 971 #if 0 972 /* Mark the interface as down */ 973 sc->sc_ethercom.ec_if.if_flags &= ~(IFF_UP | IFF_RUNNING); 974 #endif 975 976 #ifdef CS_DEBUG 977 /* Enable debugging */ 978 sc->sc_ethercom.ec_if.if_flags |= IFF_DEBUG; 979 #endif 980 981 /* Reset the chip */ 982 if ((error = cs_reset_chip(sc)) == CS_OK) { 983 /* Initialize the chip */ 984 cs_initChip(sc); 985 986 /* Mark the interface as running */ 987 sc->sc_ethercom.ec_if.if_flags |= IFF_RUNNING; 988 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 989 sc->sc_ethercom.ec_if.if_timer = 0; 990 991 /* Assume we have carrier until we are told otherwise. */ 992 sc->sc_carrier = 1; 993 } else { 994 printf("%s: unable to reset chip\n", sc->sc_dev.dv_xname); 995 } 996 997 splx(intState); 998 out: 999 if (error == CS_OK) 1000 return 0; 1001 return EIO; 1002 } 1003 1004 void 1005 cs_set_ladr_filt(struct cs_softc *sc, struct ethercom *ec) 1006 { 1007 struct ifnet *ifp = &ec->ec_if; 1008 struct ether_multi *enm; 1009 struct ether_multistep step; 1010 u_int16_t af[4]; 1011 u_int16_t port, mask, index; 1012 1013 /* 1014 * Set up multicast address filter by passing all multicast addresses 1015 * through a crc generator, and then using the high order 6 bits as an 1016 * index into the 64 bit logical address filter. The high order bit 1017 * selects the word, while the rest of the bits select the bit within 1018 * the word. 1019 */ 1020 if (ifp->if_flags & IFF_PROMISC) { 1021 /* accept all valid frames. */ 1022 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CTL, 1023 RX_CTL_PROMISC_A | RX_CTL_RX_OK_A | 1024 RX_CTL_IND_A | RX_CTL_BCAST_A | RX_CTL_MCAST_A); 1025 ifp->if_flags |= IFF_ALLMULTI; 1026 return; 1027 } 1028 1029 /* 1030 * accept frames if a. crc valid, b. individual address match c. 1031 * broadcast address,and d. multicast addresses matched in the hash 1032 * filter 1033 */ 1034 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CTL, 1035 RX_CTL_RX_OK_A | RX_CTL_IND_A | RX_CTL_BCAST_A | RX_CTL_MCAST_A); 1036 1037 1038 /* 1039 * start off with all multicast flag clear, set it if we need to 1040 * later, otherwise we will leave it. 1041 */ 1042 ifp->if_flags &= ~IFF_ALLMULTI; 1043 af[0] = af[1] = af[2] = af[3] = 0x0000; 1044 1045 /* 1046 * Loop through all the multicast addresses unless we get a range of 1047 * addresses, in which case we will just accept all packets. 1048 * Justification for this is given in the next comment. 1049 */ 1050 ETHER_FIRST_MULTI(step, ec, enm); 1051 while (enm != NULL) { 1052 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1053 sizeof enm->enm_addrlo)) { 1054 /* 1055 * We must listen to a range of multicast addresses. 1056 * For now, just accept all multicasts, rather than 1057 * trying to set only those filter bits needed to match 1058 * the range. (At this time, the only use of address 1059 * ranges is for IP multicast routing, for which the 1060 * range is big enough to require all bits set.) 1061 */ 1062 ifp->if_flags |= IFF_ALLMULTI; 1063 af[0] = af[1] = af[2] = af[3] = 0xffff; 1064 break; 1065 } else { 1066 /* 1067 * we have got an individual address so just set that 1068 * bit. 1069 */ 1070 index = cs_hash_index(enm->enm_addrlo); 1071 1072 /* Set the bit the Logical address filter. */ 1073 port = (u_int16_t) (index >> 4); 1074 mask = (u_int16_t) (1 << (index & 0xf)); 1075 af[port] |= mask; 1076 1077 ETHER_NEXT_MULTI(step, enm); 1078 } 1079 } 1080 1081 /* now program the chip with the addresses */ 1082 CS_WRITE_PACKET_PAGE(sc, PKTPG_LOG_ADDR + 0, af[0]); 1083 CS_WRITE_PACKET_PAGE(sc, PKTPG_LOG_ADDR + 2, af[1]); 1084 CS_WRITE_PACKET_PAGE(sc, PKTPG_LOG_ADDR + 4, af[2]); 1085 CS_WRITE_PACKET_PAGE(sc, PKTPG_LOG_ADDR + 6, af[3]); 1086 return; 1087 } 1088 1089 u_int16_t 1090 cs_hash_index(char *addr) 1091 { 1092 uint32_t crc; 1093 uint16_t hash_code; 1094 1095 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 1096 1097 hash_code = crc >> 26; 1098 return (hash_code); 1099 } 1100 1101 void 1102 cs_reset(void *arg) 1103 { 1104 struct cs_softc *sc = arg; 1105 1106 /* Mark the interface as down */ 1107 sc->sc_ethercom.ec_if.if_flags &= ~IFF_RUNNING; 1108 1109 /* Reset the chip */ 1110 cs_reset_chip(sc); 1111 } 1112 1113 int 1114 cs_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1115 { 1116 struct cs_softc *sc = ifp->if_softc; 1117 struct ifreq *ifr = (struct ifreq *) data; 1118 int state; 1119 int result; 1120 1121 state = splnet(); 1122 1123 result = 0; /* only set if something goes wrong */ 1124 1125 switch (cmd) { 1126 case SIOCGIFMEDIA: 1127 case SIOCSIFMEDIA: 1128 result = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1129 break; 1130 1131 default: 1132 result = ether_ioctl(ifp, cmd, data); 1133 if (result == ENETRESET) { 1134 if (CS_IS_ENABLED(sc)) { 1135 /* 1136 * Multicast list has changed. Set the 1137 * hardware filter accordingly. 1138 */ 1139 cs_set_ladr_filt(sc, &sc->sc_ethercom); 1140 } 1141 result = 0; 1142 } 1143 break; 1144 } 1145 1146 splx(state); 1147 1148 return result; 1149 } 1150 1151 int 1152 cs_mediachange(struct ifnet *ifp) 1153 { 1154 1155 /* 1156 * Current media is already set up. Just reset the interface 1157 * to let the new value take hold. 1158 */ 1159 cs_init(ifp); 1160 return (0); 1161 } 1162 1163 void 1164 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1165 { 1166 struct cs_softc *sc = ifp->if_softc; 1167 1168 /* 1169 * The currently selected media is always the active media. 1170 */ 1171 ifmr->ifm_active = sc->sc_media.ifm_cur->ifm_media; 1172 1173 if (ifp->if_flags & IFF_UP) { 1174 /* Interface up, status is valid. */ 1175 ifmr->ifm_status = IFM_AVALID | 1176 (sc->sc_carrier ? IFM_ACTIVE : 0); 1177 } 1178 else ifmr->ifm_status = 0; 1179 } 1180 1181 int 1182 cs_intr(void *arg) 1183 { 1184 struct cs_softc *sc = arg; 1185 u_int16_t Event; 1186 #if NRND > 0 1187 u_int16_t rndEvent; 1188 #endif 1189 1190 /*printf("cs_intr %p\n", sc);*/ 1191 /* Ignore any interrupts that happen while the chip is being reset */ 1192 if (sc->sc_resetting) { 1193 printf("%s: cs_intr: reset in progress\n", 1194 sc->sc_dev.dv_xname); 1195 return 1; 1196 } 1197 1198 /* Read an event from the Interrupt Status Queue */ 1199 if (sc->sc_memorymode) 1200 Event = CS_READ_PACKET_PAGE(sc, PKTPG_ISQ); 1201 else 1202 Event = CS_READ_PORT(sc, PORT_ISQ); 1203 1204 if ((Event & REG_NUM_MASK) == 0 || Event == 0xffff) 1205 return 0; /* not ours */ 1206 1207 #if NRND > 0 1208 rndEvent = Event; 1209 #endif 1210 1211 /* Process all the events in the Interrupt Status Queue */ 1212 while ((Event & REG_NUM_MASK) != 0 && Event != 0xffff) { 1213 /* Dispatch to an event handler based on the register number */ 1214 switch (Event & REG_NUM_MASK) { 1215 case REG_NUM_RX_EVENT: 1216 cs_receive_event(sc, Event); 1217 break; 1218 case REG_NUM_TX_EVENT: 1219 cs_transmit_event(sc, Event); 1220 break; 1221 case REG_NUM_BUF_EVENT: 1222 cs_buffer_event(sc, Event); 1223 break; 1224 case REG_NUM_TX_COL: 1225 case REG_NUM_RX_MISS: 1226 cs_counter_event(sc, Event); 1227 break; 1228 default: 1229 printf("%s: unknown interrupt event 0x%x\n", 1230 sc->sc_dev.dv_xname, Event); 1231 break; 1232 } 1233 1234 /* Read another event from the Interrupt Status Queue */ 1235 if (sc->sc_memorymode) 1236 Event = CS_READ_PACKET_PAGE(sc, PKTPG_ISQ); 1237 else 1238 Event = CS_READ_PORT(sc, PORT_ISQ); 1239 } 1240 1241 /* have handled the interupt */ 1242 #if NRND > 0 1243 rnd_add_uint32(&sc->rnd_source, rndEvent); 1244 #endif 1245 return 1; 1246 } 1247 1248 void 1249 cs_counter_event(struct cs_softc *sc, u_int16_t cntEvent) 1250 { 1251 struct ifnet *ifp; 1252 u_int16_t errorCount; 1253 1254 ifp = &sc->sc_ethercom.ec_if; 1255 1256 switch (cntEvent & REG_NUM_MASK) { 1257 case REG_NUM_TX_COL: 1258 /* 1259 * the count should be read before an overflow occurs. 1260 */ 1261 errorCount = CS_READ_PACKET_PAGE(sc, PKTPG_TX_COL); 1262 /* 1263 * the tramsit event routine always checks the number of 1264 * collisions for any packet so we don't increment any 1265 * counters here, as they should already have been 1266 * considered. 1267 */ 1268 break; 1269 case REG_NUM_RX_MISS: 1270 /* 1271 * the count should be read before an overflow occurs. 1272 */ 1273 errorCount = CS_READ_PACKET_PAGE(sc, PKTPG_RX_MISS); 1274 /* 1275 * Increment the input error count, the first 6bits are the 1276 * register id. 1277 */ 1278 ifp->if_ierrors += ((errorCount & 0xffC0) >> 6); 1279 break; 1280 default: 1281 /* do nothing */ 1282 break; 1283 } 1284 } 1285 1286 void 1287 cs_buffer_event(struct cs_softc *sc, u_int16_t bufEvent) 1288 { 1289 struct ifnet *ifp; 1290 1291 ifp = &sc->sc_ethercom.ec_if; 1292 1293 /* 1294 * multiple events can be in the buffer event register at one time so 1295 * a standard switch statement will not suffice, here every event 1296 * must be checked. 1297 */ 1298 1299 /* 1300 * if 128 bits have been rxed by the time we get here, the dest event 1301 * will be cleared and 128 event will be set. 1302 */ 1303 if ((bufEvent & (BUF_EVENT_RX_DEST | BUF_EVENT_RX_128)) != 0) { 1304 cs_process_rx_early(sc); 1305 } 1306 1307 if (bufEvent & BUF_EVENT_RX_DMA) { 1308 /* process the receive data */ 1309 if (sc->sc_dma_process_rx) 1310 (*sc->sc_dma_process_rx)(sc); 1311 else 1312 /* should panic? */ 1313 printf("%s: unexpected dma event\n", sc->sc_dev.dv_xname); 1314 } 1315 1316 if (bufEvent & BUF_EVENT_TX_UNDR) { 1317 #if 0 1318 /* 1319 * This can happen occasionally, and it's not worth worrying 1320 * about. 1321 */ 1322 printf("%s: transmit underrun (%d -> %d)\n", 1323 sc->sc_dev.dv_xname, sc->sc_xe_ent, 1324 cs_xmit_early_table[sc->sc_xe_ent].worse); 1325 #endif 1326 sc->sc_xe_ent = cs_xmit_early_table[sc->sc_xe_ent].worse; 1327 sc->sc_xe_togo = 1328 cs_xmit_early_table[sc->sc_xe_ent].better_count; 1329 1330 /* had an underrun, transmit is finished */ 1331 sc->sc_txbusy = FALSE; 1332 } 1333 1334 if (bufEvent & BUF_EVENT_SW_INT) { 1335 printf("%s: software initiated interrupt\n", 1336 sc->sc_dev.dv_xname); 1337 } 1338 } 1339 1340 void 1341 cs_transmit_event(struct cs_softc *sc, u_int16_t txEvent) 1342 { 1343 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1344 1345 /* If there were any errors transmitting this frame */ 1346 if (txEvent & (TX_EVENT_LOSS_CRS | TX_EVENT_SQE_ERR | TX_EVENT_OUT_WIN | 1347 TX_EVENT_JABBER | TX_EVENT_16_COLL)) { 1348 /* Increment the output error count */ 1349 ifp->if_oerrors++; 1350 1351 /* Note carrier loss. */ 1352 if (txEvent & TX_EVENT_LOSS_CRS) 1353 sc->sc_carrier = 0; 1354 1355 /* If debugging is enabled then log error messages */ 1356 if (ifp->if_flags & IFF_DEBUG) { 1357 if (txEvent & TX_EVENT_LOSS_CRS) { 1358 printf("%s: lost carrier\n", 1359 sc->sc_dev.dv_xname); 1360 } 1361 if (txEvent & TX_EVENT_SQE_ERR) { 1362 printf("%s: SQE error\n", 1363 sc->sc_dev.dv_xname); 1364 } 1365 if (txEvent & TX_EVENT_OUT_WIN) { 1366 printf("%s: out-of-window collision\n", 1367 sc->sc_dev.dv_xname); 1368 } 1369 if (txEvent & TX_EVENT_JABBER) { 1370 printf("%s: jabber\n", sc->sc_dev.dv_xname); 1371 } 1372 if (txEvent & TX_EVENT_16_COLL) { 1373 printf("%s: 16 collisions\n", 1374 sc->sc_dev.dv_xname); 1375 } 1376 } 1377 } 1378 else { 1379 /* Transmission successful, carrier is up. */ 1380 sc->sc_carrier = 1; 1381 #ifdef SHARK 1382 ledNetActive(); 1383 #endif 1384 } 1385 1386 /* Add the number of collisions for this frame */ 1387 if (txEvent & TX_EVENT_16_COLL) { 1388 ifp->if_collisions += 16; 1389 } else { 1390 ifp->if_collisions += ((txEvent & TX_EVENT_COLL_MASK) >> 11); 1391 } 1392 1393 ifp->if_opackets++; 1394 1395 /* Transmission is no longer in progress */ 1396 sc->sc_txbusy = FALSE; 1397 1398 /* If there is more to transmit */ 1399 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) { 1400 /* Start the next transmission */ 1401 cs_start_output(ifp); 1402 } 1403 } 1404 1405 void 1406 cs_print_rx_errors(struct cs_softc *sc, u_int16_t rxEvent) 1407 { 1408 1409 if (rxEvent & RX_EVENT_RUNT) 1410 printf("%s: runt\n", sc->sc_dev.dv_xname); 1411 1412 if (rxEvent & RX_EVENT_X_DATA) 1413 printf("%s: extra data\n", sc->sc_dev.dv_xname); 1414 1415 if (rxEvent & RX_EVENT_CRC_ERR) { 1416 if (rxEvent & RX_EVENT_DRIBBLE) 1417 printf("%s: alignment error\n", sc->sc_dev.dv_xname); 1418 else 1419 printf("%s: CRC error\n", sc->sc_dev.dv_xname); 1420 } else { 1421 if (rxEvent & RX_EVENT_DRIBBLE) 1422 printf("%s: dribble bits\n", sc->sc_dev.dv_xname); 1423 } 1424 } 1425 1426 void 1427 cs_receive_event(struct cs_softc *sc, u_int16_t rxEvent) 1428 { 1429 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1430 1431 /* If the frame was not received OK */ 1432 if (!(rxEvent & RX_EVENT_RX_OK)) { 1433 /* Increment the input error count */ 1434 ifp->if_ierrors++; 1435 1436 /* 1437 * If debugging is enabled then log error messages. 1438 */ 1439 if (ifp->if_flags & IFF_DEBUG) { 1440 if (rxEvent != REG_NUM_RX_EVENT) { 1441 cs_print_rx_errors(sc, rxEvent); 1442 1443 /* 1444 * Must read the length of all received 1445 * frames 1446 */ 1447 CS_READ_PACKET_PAGE(sc, PKTPG_RX_LENGTH); 1448 1449 /* Skip the received frame */ 1450 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1451 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | 1452 RX_CFG_SKIP); 1453 } else { 1454 printf("%s: implied skip\n", 1455 sc->sc_dev.dv_xname); 1456 } 1457 } 1458 } else { 1459 /* 1460 * process the received frame and pass it up to the upper 1461 * layers. 1462 */ 1463 cs_process_receive(sc); 1464 } 1465 } 1466 1467 void 1468 cs_ether_input(struct cs_softc *sc, struct mbuf *m) 1469 { 1470 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1471 1472 ifp->if_ipackets++; 1473 1474 #if NBPFILTER > 0 1475 /* 1476 * Check if there's a BPF listener on this interface. 1477 * If so, hand off the raw packet to BPF. 1478 */ 1479 if (ifp->if_bpf) 1480 bpf_mtap(ifp->if_bpf, m); 1481 #endif 1482 1483 /* Pass the packet up. */ 1484 (*ifp->if_input)(ifp, m); 1485 } 1486 1487 void 1488 cs_process_receive(struct cs_softc *sc) 1489 { 1490 struct ifnet *ifp; 1491 struct mbuf *m; 1492 int totlen; 1493 u_int16_t *pBuff, *pBuffLimit; 1494 int pad; 1495 unsigned int frameOffset; 1496 1497 #ifdef SHARK 1498 ledNetActive(); 1499 #endif 1500 1501 ifp = &sc->sc_ethercom.ec_if; 1502 1503 /* Received a packet; carrier is up. */ 1504 sc->sc_carrier = 1; 1505 1506 if (sc->sc_memorymode) { 1507 /* Initialize the frame offset */ 1508 frameOffset = PKTPG_RX_LENGTH; 1509 1510 /* Get the length of the received frame */ 1511 totlen = CS_READ_PACKET_PAGE(sc, frameOffset); 1512 frameOffset += 2; 1513 } 1514 else { 1515 /* drop status */ 1516 CS_READ_PORT(sc, PORT_RXTX_DATA); 1517 1518 /* Get the length of the received frame */ 1519 totlen = CS_READ_PORT(sc, PORT_RXTX_DATA); 1520 } 1521 1522 if (totlen > ETHER_MAX_LEN) { 1523 printf("%s: invalid packet length\n", sc->sc_dev.dv_xname); 1524 1525 /* skip the received frame */ 1526 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1527 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | RX_CFG_SKIP); 1528 return; 1529 } 1530 1531 MGETHDR(m, M_DONTWAIT, MT_DATA); 1532 if (m == 0) { 1533 printf("%s: cs_process_receive: unable to allocate mbuf\n", 1534 sc->sc_dev.dv_xname); 1535 ifp->if_ierrors++; 1536 /* 1537 * couldn't allocate an mbuf so things are not good, may as 1538 * well drop the packet I think. 1539 * 1540 * have already read the length so we should be right to skip 1541 * the packet. 1542 */ 1543 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1544 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | RX_CFG_SKIP); 1545 return; 1546 } 1547 m->m_pkthdr.rcvif = ifp; 1548 m->m_pkthdr.len = totlen; 1549 1550 /* number of bytes to align ip header on word boundary for ipintr */ 1551 pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header); 1552 1553 /* 1554 * alloc mbuf cluster if we need. 1555 * we need 1 byte spare because following 1556 * packet read loop can overrun. 1557 */ 1558 if (totlen + pad + 1 > MHLEN) { 1559 MCLGET(m, M_DONTWAIT); 1560 if ((m->m_flags & M_EXT) == 0) { 1561 /* couldn't allocate an mbuf cluster */ 1562 printf("%s: cs_process_receive: unable to allocate a cluster\n", 1563 sc->sc_dev.dv_xname); 1564 m_freem(m); 1565 1566 /* skip the received frame */ 1567 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1568 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | RX_CFG_SKIP); 1569 return; 1570 } 1571 } 1572 1573 /* align ip header on word boundary for ipintr */ 1574 m->m_data += pad; 1575 1576 m->m_len = totlen; 1577 pBuff = mtod(m, u_int16_t *); 1578 1579 /* now read the data from the chip */ 1580 if (sc->sc_memorymode) { 1581 pBuffLimit = pBuff + (totlen + 1) / 2; /* don't want to go over */ 1582 while (pBuff < pBuffLimit) { 1583 *pBuff++ = CS_READ_PACKET_PAGE(sc, frameOffset); 1584 frameOffset += 2; 1585 } 1586 } 1587 else { 1588 IO_READ_MULTI_2(sc, PORT_RXTX_DATA, pBuff, (totlen + 1)>>1); 1589 } 1590 1591 cs_ether_input(sc, m); 1592 } 1593 1594 void 1595 cs_process_rx_early(struct cs_softc *sc) 1596 { 1597 struct ifnet *ifp; 1598 struct mbuf *m; 1599 u_int16_t frameCount, oldFrameCount; 1600 u_int16_t rxEvent; 1601 u_int16_t *pBuff; 1602 int pad; 1603 unsigned int frameOffset; 1604 1605 1606 ifp = &sc->sc_ethercom.ec_if; 1607 1608 /* Initialize the frame offset */ 1609 frameOffset = PKTPG_RX_FRAME; 1610 frameCount = 0; 1611 1612 MGETHDR(m, M_DONTWAIT, MT_DATA); 1613 if (m == 0) { 1614 printf("%s: cs_process_rx_early: unable to allocate mbuf\n", 1615 sc->sc_dev.dv_xname); 1616 ifp->if_ierrors++; 1617 /* 1618 * couldn't allocate an mbuf so things are not good, may as 1619 * well drop the packet I think. 1620 * 1621 * have already read the length so we should be right to skip 1622 * the packet. 1623 */ 1624 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1625 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | RX_CFG_SKIP); 1626 return; 1627 } 1628 m->m_pkthdr.rcvif = ifp; 1629 /* 1630 * save processing by always using a mbuf cluster, guarenteed to fit 1631 * packet 1632 */ 1633 MCLGET(m, M_DONTWAIT); 1634 if ((m->m_flags & M_EXT) == 0) { 1635 /* couldn't allocate an mbuf cluster */ 1636 printf("%s: cs_process_rx_early: unable to allocate a cluster\n", 1637 sc->sc_dev.dv_xname); 1638 m_freem(m); 1639 /* skip the frame */ 1640 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 1641 CS_READ_PACKET_PAGE(sc, PKTPG_RX_CFG) | RX_CFG_SKIP); 1642 return; 1643 } 1644 1645 /* align ip header on word boundary for ipintr */ 1646 pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header); 1647 m->m_data += pad; 1648 1649 /* set up the buffer pointer to point to the data area */ 1650 pBuff = mtod(m, u_int16_t *); 1651 1652 /* 1653 * now read the frame byte counter until we have finished reading the 1654 * frame 1655 */ 1656 oldFrameCount = 0; 1657 frameCount = CS_READ_PACKET_PAGE(sc, PKTPG_FRAME_BYTE_COUNT); 1658 while ((frameCount != 0) && (frameCount < MCLBYTES)) { 1659 for (; oldFrameCount < frameCount; oldFrameCount += 2) { 1660 *pBuff++ = CS_READ_PACKET_PAGE(sc, frameOffset); 1661 frameOffset += 2; 1662 } 1663 1664 /* read the new count from the chip */ 1665 frameCount = CS_READ_PACKET_PAGE(sc, PKTPG_FRAME_BYTE_COUNT); 1666 } 1667 1668 /* update the mbuf counts */ 1669 m->m_len = oldFrameCount; 1670 m->m_pkthdr.len = oldFrameCount; 1671 1672 /* now check the Rx Event register */ 1673 rxEvent = CS_READ_PACKET_PAGE(sc, PKTPG_RX_EVENT); 1674 1675 if ((rxEvent & RX_EVENT_RX_OK) != 0) { 1676 /* 1677 * do an implied skip, it seems to be more reliable than a 1678 * forced skip. 1679 */ 1680 rxEvent = CS_READ_PACKET_PAGE(sc, PKTPG_RX_STATUS); 1681 rxEvent = CS_READ_PACKET_PAGE(sc, PKTPG_RX_LENGTH); 1682 1683 /* 1684 * now read the RX_EVENT register to perform an implied skip. 1685 */ 1686 rxEvent = CS_READ_PACKET_PAGE(sc, PKTPG_RX_EVENT); 1687 1688 cs_ether_input(sc, m); 1689 } else { 1690 m_freem(m); 1691 ifp->if_ierrors++; 1692 } 1693 } 1694 1695 void 1696 cs_start_output(struct ifnet *ifp) 1697 { 1698 struct cs_softc *sc; 1699 struct mbuf *pMbuf; 1700 struct mbuf *pMbufChain; 1701 u_int16_t BusStatus; 1702 u_int16_t Length; 1703 int txLoop = 0; 1704 int dropout = 0; 1705 1706 sc = ifp->if_softc; 1707 1708 /* check that the interface is up and running */ 1709 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) { 1710 return; 1711 } 1712 1713 /* Don't interrupt a transmission in progress */ 1714 if (sc->sc_txbusy) { 1715 return; 1716 } 1717 1718 /* this loop will only run through once if transmission is successful */ 1719 /* 1720 * While there are packets to transmit and a transmit is not in 1721 * progress 1722 */ 1723 while (sc->sc_txbusy == 0 && dropout == 0) { 1724 IFQ_DEQUEUE(&ifp->if_snd, pMbufChain); 1725 if (pMbufChain == NULL) 1726 break; 1727 1728 #if NBPFILTER > 0 1729 /* 1730 * If BPF is listening on this interface, let it see the packet 1731 * before we commit it to the wire. 1732 */ 1733 if (ifp->if_bpf) 1734 bpf_mtap(ifp->if_bpf, pMbufChain); 1735 #endif 1736 1737 /* Find the total length of the data to transmit */ 1738 Length = 0; 1739 for (pMbuf = pMbufChain; pMbuf != NULL; pMbuf = pMbuf->m_next) 1740 Length += pMbuf->m_len; 1741 1742 do { 1743 /* 1744 * Request that the transmit be started after all 1745 * data has been copied 1746 * 1747 * In IO mode must write to the IO port not the packet 1748 * page address 1749 * 1750 * If this is changed to start transmission after a 1751 * small amount of data has been copied you tend to 1752 * get packet missed errors i think because the ISA 1753 * bus is too slow. Or possibly the copy routine is 1754 * not streamlined enough. 1755 */ 1756 if (sc->sc_memorymode) { 1757 CS_WRITE_PACKET_PAGE(sc, PKTPG_TX_CMD, 1758 cs_xmit_early_table[sc->sc_xe_ent].txcmd); 1759 CS_WRITE_PACKET_PAGE(sc, PKTPG_TX_LENGTH, Length); 1760 } 1761 else { 1762 CS_WRITE_PORT(sc, PORT_TX_CMD, 1763 cs_xmit_early_table[sc->sc_xe_ent].txcmd); 1764 CS_WRITE_PORT(sc, PORT_TX_LENGTH, Length); 1765 } 1766 1767 /* 1768 * Adjust early-transmit machinery. 1769 */ 1770 if (--sc->sc_xe_togo == 0) { 1771 sc->sc_xe_ent = 1772 cs_xmit_early_table[sc->sc_xe_ent].better; 1773 sc->sc_xe_togo = 1774 cs_xmit_early_table[sc->sc_xe_ent].better_count; 1775 } 1776 /* 1777 * Read the BusStatus register which indicates 1778 * success of the request 1779 */ 1780 BusStatus = CS_READ_PACKET_PAGE(sc, PKTPG_BUS_ST); 1781 1782 /* 1783 * If there was an error in the transmit bid free the 1784 * mbuf and go on. This is presuming that mbuf is 1785 * corrupt. 1786 */ 1787 if (BusStatus & BUS_ST_TX_BID_ERR) { 1788 printf("%s: transmit bid error (too big)", 1789 sc->sc_dev.dv_xname); 1790 1791 /* Discard the bad mbuf chain */ 1792 m_freem(pMbufChain); 1793 sc->sc_ethercom.ec_if.if_oerrors++; 1794 1795 /* Loop up to transmit the next chain */ 1796 txLoop = 0; 1797 } else { 1798 if (BusStatus & BUS_ST_RDY4TXNOW) { 1799 /* 1800 * The chip is ready for transmission 1801 * now 1802 */ 1803 /* 1804 * Copy the frame to the chip to 1805 * start transmission 1806 */ 1807 cs_copy_tx_frame(sc, pMbufChain); 1808 1809 /* Free the mbuf chain */ 1810 m_freem(pMbufChain); 1811 1812 /* Transmission is now in progress */ 1813 sc->sc_txbusy = TRUE; 1814 txLoop = 0; 1815 } else { 1816 /* 1817 * if we get here we want to try 1818 * again with the same mbuf, until 1819 * the chip lets us transmit. 1820 */ 1821 txLoop++; 1822 if (txLoop > CS_OUTPUT_LOOP_MAX) { 1823 /* Free the mbuf chain */ 1824 m_freem(pMbufChain); 1825 /* 1826 * Transmission is not in 1827 * progress 1828 */ 1829 sc->sc_txbusy = FALSE; 1830 /* 1831 * Increment the output error 1832 * count 1833 */ 1834 ifp->if_oerrors++; 1835 /* 1836 * exit the routine and drop 1837 * the packet. 1838 */ 1839 txLoop = 0; 1840 dropout = 1; 1841 } 1842 } 1843 } 1844 } while (txLoop); 1845 } 1846 } 1847 1848 void 1849 cs_copy_tx_frame(struct cs_softc *sc, struct mbuf *m0) 1850 { 1851 struct mbuf *m; 1852 int len, leftover, frameoff; 1853 u_int16_t dbuf; 1854 u_int8_t *p; 1855 #ifdef DIAGNOSTIC 1856 u_int8_t *lim; 1857 #endif 1858 1859 /* Initialize frame pointer and data port address */ 1860 frameoff = PKTPG_TX_FRAME; 1861 1862 /* start out with no leftover data */ 1863 leftover = 0; 1864 dbuf = 0; 1865 1866 /* Process the chain of mbufs */ 1867 for (m = m0; m != NULL; m = m->m_next) { 1868 /* 1869 * Process all of the data in a single mbuf. 1870 */ 1871 p = mtod(m, u_int8_t *); 1872 len = m->m_len; 1873 #ifdef DIAGNOSTIC 1874 lim = p + len; 1875 #endif 1876 1877 while (len > 0) { 1878 if (leftover) { 1879 /* 1880 * Data left over (from mbuf or realignment). 1881 * Buffer the next byte, and write it and 1882 * the leftover data out. 1883 */ 1884 dbuf |= *p++ << 8; 1885 len--; 1886 if (sc->sc_memorymode) { 1887 CS_WRITE_PACKET_PAGE(sc, frameoff, dbuf); 1888 frameoff += 2; 1889 } 1890 else { 1891 CS_WRITE_PORT(sc, PORT_RXTX_DATA, dbuf); 1892 } 1893 leftover = 0; 1894 } else if ((long) p & 1) { 1895 /* 1896 * Misaligned data. Buffer the next byte. 1897 */ 1898 dbuf = *p++; 1899 len--; 1900 leftover = 1; 1901 } else { 1902 /* 1903 * Aligned data. This is the case we like. 1904 * 1905 * Write-region out as much as we can, then 1906 * buffer the remaining byte (if any). 1907 */ 1908 leftover = len & 1; 1909 len &= ~1; 1910 if (sc->sc_memorymode) { 1911 MEM_WRITE_REGION_2(sc, frameoff, 1912 (u_int16_t *) p, len >> 1); 1913 frameoff += len; 1914 } 1915 else { 1916 IO_WRITE_MULTI_2(sc, 1917 PORT_RXTX_DATA, (u_int16_t *)p, len >> 1); 1918 } 1919 p += len; 1920 1921 if (leftover) 1922 dbuf = *p++; 1923 len = 0; 1924 } 1925 } 1926 if (len < 0) 1927 panic("cs_copy_tx_frame: negative len"); 1928 #ifdef DIAGNOSTIC 1929 if (p != lim) 1930 panic("cs_copy_tx_frame: p != lim"); 1931 #endif 1932 } 1933 if (leftover) { 1934 if (sc->sc_memorymode) { 1935 CS_WRITE_PACKET_PAGE(sc, frameoff, dbuf); 1936 } 1937 else { 1938 CS_WRITE_PORT(sc, PORT_RXTX_DATA, dbuf); 1939 } 1940 } 1941 } 1942 1943 static int 1944 cs_enable(struct cs_softc *sc) 1945 { 1946 1947 if (CS_IS_ENABLED(sc) == 0) { 1948 if (sc->sc_enable != NULL) { 1949 int error; 1950 1951 error = (*sc->sc_enable)(sc); 1952 if (error) 1953 return (error); 1954 } 1955 sc->sc_cfgflags |= CFGFLG_ENABLED; 1956 } 1957 1958 return (0); 1959 } 1960 1961 static void 1962 cs_disable(struct cs_softc *sc) 1963 { 1964 1965 if (CS_IS_ENABLED(sc)) { 1966 if (sc->sc_disable != NULL) 1967 (*sc->sc_disable)(sc); 1968 1969 sc->sc_cfgflags &= ~CFGFLG_ENABLED; 1970 } 1971 } 1972 1973 static void 1974 cs_stop(struct ifnet *ifp, int disable) 1975 { 1976 struct cs_softc *sc = ifp->if_softc; 1977 1978 CS_WRITE_PACKET_PAGE(sc, PKTPG_RX_CFG, 0); 1979 CS_WRITE_PACKET_PAGE(sc, PKTPG_TX_CFG, 0); 1980 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUF_CFG, 0); 1981 CS_WRITE_PACKET_PAGE(sc, PKTPG_BUS_CTL, 0); 1982 1983 if (disable) { 1984 cs_disable(sc); 1985 } 1986 1987 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1988 } 1989 1990 int 1991 cs_activate(struct device *self, enum devact act) 1992 { 1993 struct cs_softc *sc = (void *)self; 1994 int s, error = 0; 1995 1996 s = splnet(); 1997 switch (act) { 1998 case DVACT_ACTIVATE: 1999 error = EOPNOTSUPP; 2000 break; 2001 2002 case DVACT_DEACTIVATE: 2003 if_deactivate(&sc->sc_ethercom.ec_if); 2004 break; 2005 } 2006 splx(s); 2007 2008 return error; 2009 } 2010 2011 static void 2012 cs_power(int why, void *arg) 2013 { 2014 struct cs_softc *sc = arg; 2015 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2016 int s; 2017 2018 s = splnet(); 2019 switch (why) { 2020 case PWR_STANDBY: 2021 case PWR_SUSPEND: 2022 cs_stop(ifp, 0); 2023 break; 2024 case PWR_RESUME: 2025 if (ifp->if_flags & IFF_UP) { 2026 cs_init(ifp); 2027 } 2028 break; 2029 case PWR_SOFTSUSPEND: 2030 case PWR_SOFTSTANDBY: 2031 case PWR_SOFTRESUME: 2032 break; 2033 } 2034 splx(s); 2035 } 2036