| 1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Tim L. Tucker |
| 7 | * |
| 8 | * %sccs.include.noredist.c% |
| 9 | * |
| 10 | * @(#)if_we.c 5.2 (Berkeley) %G% |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * Modification history |
| 15 | * |
| 16 | * 8/28/89 - Initial version(if_wd.c), Tim L Tucker |
| 17 | */ |
| 18 | |
| 19 | #include "we.h" |
| 20 | #if NWE > 0 |
| 21 | /* |
| 22 | * Western Digital 8003 ethernet/starlan adapter |
| 23 | * |
| 24 | * Supports the following interface cards: |
| 25 | * WD8003E, WD8003EBT, WD8003S, WD8003SBT |
| 26 | * |
| 27 | * The Western Digital card is one of many AT/MCA ethernet interfaces |
| 28 | * based on the National N8390/NS32490 Network Interface chip set. |
| 29 | */ |
| 30 | #include "param.h" |
| 31 | #include "mbuf.h" |
| 32 | #include "socket.h" |
| 33 | #include "ioctl.h" |
| 34 | #include "errno.h" |
| 35 | #include "syslog.h" |
| 36 | |
| 37 | #include "../net/if.h" |
| 38 | #include "../net/netisr.h" |
| 39 | |
| 40 | #ifdef INET |
| 41 | #include "../netinet/in.h" |
| 42 | #include "../netinet/in_systm.h" |
| 43 | #include "../netinet/in_var.h" |
| 44 | #include "../netinet/ip.h" |
| 45 | #include "../netinet/if_ether.h" |
| 46 | #endif |
| 47 | |
| 48 | #ifdef NS |
| 49 | #include "../netns/ns.h" |
| 50 | #include "../netns/ns_if.h" |
| 51 | #endif |
| 52 | |
| 53 | #include "machine/isa/if_wereg.h" |
| 54 | #include "machine/isa/device.h" |
| 55 | |
| 56 | /* |
| 57 | * This constant should really be 60 because the we adds 4 bytes of crc. |
| 58 | * However when set to 60 our packets are ignored by deuna's , 3coms are |
| 59 | * okay ?????????????????????????????????????????? |
| 60 | */ |
| 61 | #define ETHER_MIN_LEN 64 |
| 62 | #define ETHER_ADDR_LEN 6 |
| 63 | #define ETHER_HDR_SIZE 14 |
| 64 | |
| 65 | /* |
| 66 | * Ethernet software status per interface. |
| 67 | * |
| 68 | * Each interface is referenced by a network interface structure, |
| 69 | * qe_if, which the routing code uses to locate the interface. |
| 70 | * This structure contains the output queue for the interface, its address, ... |
| 71 | */ |
| 72 | struct we_softc { |
| 73 | struct arpcom we_ac; /* Ethernet common part */ |
| 74 | #define we_if we_ac.ac_if /* network-visible interface */ |
| 75 | #define we_addr we_ac.ac_enaddr /* hardware Ethernet address */ |
| 76 | |
| 77 | u_char we_flags; /* software state */ |
| 78 | #define WDF_RUNNING 0x01 |
| 79 | #define WDF_TXBUSY 0x02 |
| 80 | |
| 81 | u_char we_type; /* interface type code */ |
| 82 | u_short we_vector; /* interrupt vector */ |
| 83 | caddr_t we_io_ctl_addr; /* i/o bus address, control */ |
| 84 | caddr_t we_io_nic_addr; /* i/o bus address, NS32490 */ |
| 85 | |
| 86 | caddr_t we_vmem_addr; /* card RAM virtual memory base */ |
| 87 | u_long we_vmem_size; /* card RAM bytes */ |
| 88 | caddr_t we_vmem_ring; /* receive ring RAM vaddress */ |
| 89 | } we_softc[NWE]; |
| 90 | |
| 91 | int weprobe(), weattach(), weintr(); |
| 92 | int weinit(), weoutput(), weioctl(), wereset(); |
| 93 | |
| 94 | struct isa_driver wedriver = { |
| 95 | weprobe, weattach, "we", |
| 96 | }; |
| 97 | |
| 98 | /* |
| 99 | * Probe the WD8003 to see if it's there |
| 100 | */ |
| 101 | weprobe(is) |
| 102 | struct isa_device *is; |
| 103 | { |
| 104 | register int i; |
| 105 | register struct we_softc *sc = &we_softc[is->id_unit]; |
| 106 | union we_mem_sel wem; |
| 107 | u_char sum; |
| 108 | |
| 109 | /* |
| 110 | * Here we check the card ROM, if the checksum passes, and the |
| 111 | * type code and ethernet address check out, then we know we have |
| 112 | * a wd8003 card. |
| 113 | * |
| 114 | * Autoconfiguration: No warning message is printed on error. |
| 115 | */ |
| 116 | for (sum = 0, i = 0; i < 8; ++i) |
| 117 | sum += inb(is->id_iobase + WD_ROM_OFFSET + i); |
| 118 | if (sum != WD_CHECKSUM) |
| 119 | return (0); |
| 120 | sc->we_type = inb(is->id_iobase + WD_ROM_OFFSET + 6); |
| 121 | if ((sc->we_type != WD_ETHER) && (sc->we_type != WD_STARLAN) |
| 122 | && (sc->we_type != WD_ETHER2)) |
| 123 | return (0); |
| 124 | |
| 125 | /* |
| 126 | * Setup card RAM area and i/o addresses |
| 127 | * Kernel Virtual to segment C0000-DFFFF????? |
| 128 | */ |
| 129 | sc->we_io_ctl_addr = is->id_iobase; |
| 130 | sc->we_io_nic_addr = sc->we_io_ctl_addr + WD_NIC_OFFSET; |
| 131 | sc->we_vector = is->id_irq; |
| 132 | sc->we_vmem_addr = (caddr_t)is->id_maddr; |
| 133 | sc->we_vmem_size = is->id_msize; |
| 134 | sc->we_vmem_ring = sc->we_vmem_addr + (WD_PAGE_SIZE * WD_TXBUF_SIZE); |
| 135 | |
| 136 | /* |
| 137 | * Save board ROM station address |
| 138 | */ |
| 139 | for (i = 0; i < ETHER_ADDR_LEN; ++i) |
| 140 | sc->we_addr[i] = inb(sc->we_io_ctl_addr + WD_ROM_OFFSET + i); |
| 141 | |
| 142 | /* |
| 143 | * Mapin interface memory, setup memory select register |
| 144 | */ |
| 145 | /* wem.ms_addr = (u_long)sc->we_vmem_addr >> 13; */ |
| 146 | wem.ms_addr = (u_long)(0xd0000)>> 13; |
| 147 | wem.ms_enable = 1; |
| 148 | wem.ms_reset = 0; |
| 149 | outb(sc->we_io_ctl_addr, wem.ms_byte); |
| 150 | |
| 151 | /* |
| 152 | * clear interface memory, then sum to make sure its valid |
| 153 | */ |
| 154 | for (i = 0; i < sc->we_vmem_size; ++i) |
| 155 | sc->we_vmem_addr[i] = 0x0; |
| 156 | for (sum = 0, i = 0; i < sc->we_vmem_size; ++i) |
| 157 | sum += sc->we_vmem_addr[i]; |
| 158 | if (sum != 0x0) { |
| 159 | printf("we%d: wd8003 dual port RAM address error\n", is->id_unit); |
| 160 | return (0); |
| 161 | } |
| 162 | |
| 163 | return (WD_IO_PORTS); |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * Interface exists: make available by filling in network interface |
| 168 | * record. System will initialize the interface when it is ready |
| 169 | * to accept packets. |
| 170 | */ |
| 171 | weattach(is) |
| 172 | struct isa_device *is; |
| 173 | { |
| 174 | register struct we_softc *sc = &we_softc[is->id_unit]; |
| 175 | register struct ifnet *ifp = &sc->we_if; |
| 176 | |
| 177 | /* |
| 178 | * Initialize ifnet structure |
| 179 | */ |
| 180 | ifp->if_unit = is->id_unit; |
| 181 | ifp->if_name = "we"; |
| 182 | ifp->if_mtu = ETHERMTU; |
| 183 | ifp->if_flags = IFF_BROADCAST|IFF_NOTRAILERS; |
| 184 | ifp->if_init = weinit; |
| 185 | ifp->if_output = weoutput; |
| 186 | ifp->if_ioctl = weioctl; |
| 187 | ifp->if_reset = wereset; |
| 188 | ifp->if_watchdog = 0; |
| 189 | if_attach(ifp); |
| 190 | |
| 191 | /* |
| 192 | * Banner... |
| 193 | */ |
| 194 | printf(" %s address %s", |
| 195 | ((sc->we_type != WD_STARLAN) ? "ethernet" : "starlan"), |
| 196 | ether_sprintf(sc->we_addr)); |
| 197 | } |
| 198 | |
| 199 | /* |
| 200 | * Reset of interface. |
| 201 | */ |
| 202 | wereset(unit, uban) |
| 203 | int unit, uban; |
| 204 | { |
| 205 | if (unit >= NWE) |
| 206 | return; |
| 207 | printf("we%d: reset\n", unit); |
| 208 | we_softc[unit].we_flags &= ~WDF_RUNNING; |
| 209 | weinit(unit); |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Take interface offline. |
| 214 | */ |
| 215 | westop(unit) |
| 216 | int unit; |
| 217 | { |
| 218 | register struct we_softc *sc = &we_softc[unit]; |
| 219 | union we_command wecmd; |
| 220 | int s; |
| 221 | |
| 222 | /* |
| 223 | * Shutdown NS32490 |
| 224 | */ |
| 225 | s = splimp(); |
| 226 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 227 | wecmd.cs_stp = 1; |
| 228 | wecmd.cs_sta = 0; |
| 229 | wecmd.cs_ps = 0; |
| 230 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 231 | (void) splx(s); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Initialization of interface (really just NS32490). |
| 236 | */ |
| 237 | weinit(unit) |
| 238 | int unit; |
| 239 | { |
| 240 | register struct we_softc *sc = &we_softc[unit]; |
| 241 | register struct ifnet *ifp = &sc->we_if; |
| 242 | union we_command wecmd; |
| 243 | int i, s; |
| 244 | |
| 245 | /* address not known */ |
| 246 | if (ifp->if_addrlist == (struct ifaddr *)0) |
| 247 | return; |
| 248 | |
| 249 | /* already running */ |
| 250 | if (sc->we_flags & WDF_RUNNING) |
| 251 | return; |
| 252 | |
| 253 | /* |
| 254 | * Initialize NS32490 in order given in NSC NIC manual. |
| 255 | * this is stock code...please see the National manual for details. |
| 256 | */ |
| 257 | s = splhigh(); |
| 258 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 259 | wecmd.cs_stp = 1; |
| 260 | wecmd.cs_sta = 0; |
| 261 | wecmd.cs_ps = 0; |
| 262 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 263 | outb(sc->we_io_nic_addr + WD_P0_DCR, WD_D_CONFIG); |
| 264 | outb(sc->we_io_nic_addr + WD_P0_RBCR0, 0); |
| 265 | outb(sc->we_io_nic_addr + WD_P0_RBCR1, 0); |
| 266 | outb(sc->we_io_nic_addr + WD_P0_RCR, WD_R_MON); |
| 267 | outb(sc->we_io_nic_addr + WD_P0_TCR, WD_T_CONFIG); |
| 268 | outb(sc->we_io_nic_addr + WD_P0_TPSR, 0); |
| 269 | outb(sc->we_io_nic_addr + WD_P0_PSTART, WD_TXBUF_SIZE); |
| 270 | outb(sc->we_io_nic_addr + WD_P0_PSTOP, |
| 271 | sc->we_vmem_size / WD_PAGE_SIZE); |
| 272 | outb(sc->we_io_nic_addr + WD_P0_BNRY, WD_TXBUF_SIZE); |
| 273 | outb(sc->we_io_nic_addr + WD_P0_ISR, 0xff); |
| 274 | #define WD_I_CONFIG 0xff |
| 275 | outb(sc->we_io_nic_addr + WD_P0_IMR, WD_I_CONFIG); |
| 276 | wecmd.cs_ps = 1; |
| 277 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 278 | for (i = 0; i < ETHER_ADDR_LEN; ++i) |
| 279 | outb(sc->we_io_nic_addr + WD_P1_PAR0 + i, sc->we_addr[i]); |
| 280 | for (i = 0; i < ETHER_ADDR_LEN; ++i) /* == broadcast addr */ |
| 281 | outb(sc->we_io_nic_addr + WD_P1_MAR0 + i, 0xff); |
| 282 | outb(sc->we_io_nic_addr + WD_P1_CURR, WD_TXBUF_SIZE); |
| 283 | wecmd.cs_ps = 0; |
| 284 | wecmd.cs_stp = 0; |
| 285 | wecmd.cs_sta = 1; |
| 286 | wecmd.cs_rd = 0x4; |
| 287 | outb(sc->we_io_nic_addr + WD_P1_COMMAND, wecmd.cs_byte); |
| 288 | outb(sc->we_io_nic_addr + WD_P0_RCR, WD_R_CONFIG); |
| 289 | |
| 290 | /* |
| 291 | * Take the interface out of reset, program the vector, |
| 292 | * enable interrupts, and tell the world we are up. |
| 293 | */ |
| 294 | ifp->if_flags |= IFF_UP | IFF_RUNNING; |
| 295 | sc->we_flags |= WDF_RUNNING; |
| 296 | sc->we_flags &= ~WDF_TXBUSY; |
| 297 | (void) splx(s); |
| 298 | westart(unit); |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Start output on interface. |
| 303 | */ |
| 304 | westart(unit) |
| 305 | int unit; |
| 306 | { |
| 307 | register struct we_softc *sc = &we_softc[unit]; |
| 308 | struct mbuf *m0, *m; |
| 309 | register caddr_t buffer; |
| 310 | int len = 0, s; |
| 311 | union we_command wecmd; |
| 312 | |
| 313 | /* |
| 314 | * The NS32490 has only one transmit buffer, if it is busy we |
| 315 | * must wait until the transmit interrupt completes. |
| 316 | */ |
| 317 | s = splhigh(); |
| 318 | if (sc->we_flags & WDF_TXBUSY) { |
| 319 | (void) splx(s); |
| 320 | return; |
| 321 | } |
| 322 | IF_DEQUEUE(&sc->we_if.if_snd, m); |
| 323 | if (m == 0) { |
| 324 | (void) splx(s); |
| 325 | return; |
| 326 | } |
| 327 | sc->we_flags |= WDF_TXBUSY; |
| 328 | (void) splx(s); |
| 329 | |
| 330 | /* |
| 331 | * Copy the mbuf chain into the transmit buffer |
| 332 | */ |
| 333 | buffer = sc->we_vmem_addr; |
| 334 | for (m0 = m; m != 0; m = m->m_next) { |
| 335 | bcopy(mtod(m, caddr_t), buffer, m->m_len); |
| 336 | buffer += m->m_len; |
| 337 | len += m->m_len; |
| 338 | } |
| 339 | |
| 340 | /* |
| 341 | * If this was a broadcast packet loop it |
| 342 | * back because the hardware can't hear its own |
| 343 | * transmits. |
| 344 | */ |
| 345 | #ifdef notyet |
| 346 | if (bcmp((caddr_t)(mtod(m0, struct ether_header *)->ether_dhost), |
| 347 | (caddr_t)etherbroadcastaddr, |
| 348 | sizeof(etherbroadcastaddr)) == 0) { |
| 349 | weread(sc, m0); |
| 350 | } else { |
| 351 | #endif |
| 352 | m_freem(m0); |
| 353 | #ifdef notyet |
| 354 | } |
| 355 | #endif |
| 356 | |
| 357 | /* |
| 358 | * Init transmit length registers, and set transmit start flag. |
| 359 | */ |
| 360 | s = splhigh(); |
| 361 | len = MAX(len, ETHER_MIN_LEN); |
| 362 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 363 | wecmd.cs_ps = 0; |
| 364 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 365 | outb(sc->we_io_nic_addr + WD_P0_TBCR0, len & 0xff); |
| 366 | outb(sc->we_io_nic_addr + WD_P0_TBCR1, len >> 8); |
| 367 | wecmd.cs_txp = 1; |
| 368 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 369 | (void) splx(s); |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * Ethernet interface interrupt processor |
| 374 | */ |
| 375 | weintr(unit) |
| 376 | int unit; |
| 377 | { |
| 378 | register struct we_softc *sc = &we_softc[0]; |
| 379 | union we_command wecmd; |
| 380 | union we_interrupt weisr; |
| 381 | int s; |
| 382 | unit =0; |
| 383 | |
| 384 | /* disable onboard interrupts, then get interrupt status */ |
| 385 | s = splhigh(); |
| 386 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 387 | wecmd.cs_ps = 0; |
| 388 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 389 | /* outb(sc->we_io_nic_addr + WD_P0_IMR, 0); */ |
| 390 | weisr.is_byte = inb(sc->we_io_nic_addr + WD_P0_ISR); |
| 391 | #ifdef notdef |
| 392 | printf("weintr %x ", inb(sc->we_io_nic_addr + WD_P0_ISR)); |
| 393 | outb(sc->we_io_nic_addr+WD_P0_IMR,0xff); |
| 394 | #endif |
| 395 | outb(sc->we_io_nic_addr + WD_P0_ISR, 0xff); |
| 396 | (void) splx(s); |
| 397 | |
| 398 | /* transmit error */ |
| 399 | if (weisr.is_txe) { |
| 400 | printf("txe\n"); |
| 401 | /* need to read these registers to clear status */ |
| 402 | sc->we_if.if_collisions += |
| 403 | inb(sc->we_io_nic_addr + WD_P0_TBCR0); |
| 404 | ++sc->we_if.if_oerrors; |
| 405 | } |
| 406 | |
| 407 | /* receiver error */ |
| 408 | if (weisr.is_rxe) { |
| 409 | printf("rxe\n"); |
| 410 | /* need to read these registers to clear status */ |
| 411 | (void) inb(sc->we_io_nic_addr + 0xD); |
| 412 | (void) inb(sc->we_io_nic_addr + 0xE); |
| 413 | (void) inb(sc->we_io_nic_addr + 0xF); |
| 414 | ++sc->we_if.if_ierrors; |
| 415 | } |
| 416 | |
| 417 | /* normal transmit complete */ |
| 418 | if (weisr.is_ptx) |
| 419 | wetint (unit); |
| 420 | |
| 421 | /* normal receive notification */ |
| 422 | if (weisr.is_prx) |
| 423 | werint (unit); |
| 424 | |
| 425 | /* try to start transmit */ |
| 426 | westart(unit); |
| 427 | |
| 428 | /* re-enable onboard interrupts */ |
| 429 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 430 | wecmd.cs_ps = 0; |
| 431 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 432 | outb(sc->we_io_nic_addr + WD_P0_IMR, WD_I_CONFIG); |
| 433 | } |
| 434 | |
| 435 | /* |
| 436 | * Ethernet interface transmit interrupt. |
| 437 | */ |
| 438 | wetint(unit) |
| 439 | int unit; |
| 440 | { |
| 441 | register struct we_softc *sc = &we_softc[unit]; |
| 442 | |
| 443 | /* |
| 444 | * Do some statistics (assume page zero of NIC mapped in) |
| 445 | */ |
| 446 | sc->we_flags &= ~WDF_TXBUSY; |
| 447 | sc->we_if.if_timer = 0; |
| 448 | ++sc->we_if.if_opackets; |
| 449 | sc->we_if.if_collisions += inb(sc->we_io_nic_addr + WD_P0_TBCR0); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Ethernet interface receiver interrupt. |
| 454 | */ |
| 455 | werint(unit) |
| 456 | int unit; |
| 457 | { |
| 458 | register struct we_softc *sc = &we_softc[unit]; |
| 459 | register struct mbuf **m; |
| 460 | int mlen, len, count; |
| 461 | u_char bnry, curr; |
| 462 | union we_command wecmd; |
| 463 | struct we_ring *wer; |
| 464 | struct mbuf *m0; |
| 465 | caddr_t pkt, endp; |
| 466 | static Bdry; |
| 467 | |
| 468 | /* |
| 469 | * Traverse the receive ring looking for packets to pass back. |
| 470 | * The search is complete when we find a descriptor not in use. |
| 471 | */ |
| 472 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 473 | wecmd.cs_ps = 0; |
| 474 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 475 | bnry = inb(sc->we_io_nic_addr + WD_P0_BNRY); |
| 476 | wecmd.cs_ps = 1; |
| 477 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 478 | curr = inb(sc->we_io_nic_addr + WD_P1_CURR); |
| 479 | printf("Bd %x cur %x ", bnry, curr); |
| 480 | if(Bdry && Bdry > bnry){ |
| 481 | bnry =Bdry; |
| 482 | printf("bd %x! ", bnry); |
| 483 | } |
| 484 | while (bnry != curr) |
| 485 | { |
| 486 | /* get pointer to this buffer header structure */ |
| 487 | wer = (struct we_ring *)(sc->we_vmem_addr + (bnry << 8)); |
| 488 | len = wer->we_count - 4; /* count includes CRC */ |
| 489 | printf("l %d", len); |
| 490 | pkt = (caddr_t)(wer + 1) /*- 2*/; /* 2 - word align pkt data */ |
| 491 | count = len /*+ 2*/; /* copy two extra bytes */ |
| 492 | endp = (caddr_t)(sc->we_vmem_addr + sc->we_vmem_size); |
| 493 | ++sc->we_if.if_ipackets; |
| 494 | |
| 495 | /* pull packet out of dual ported RAM */ |
| 496 | m = &m0; m0 = 0; |
| 497 | while (count > 0) |
| 498 | { |
| 499 | /* drop chain if can't get another buffer */ |
| 500 | MGET(*m, M_DONTWAIT, MT_DATA); |
| 501 | if (*m == 0) |
| 502 | { |
| 503 | m_freem(m0); |
| 504 | goto outofbufs; |
| 505 | } |
| 506 | |
| 507 | /* fill mbuf and attach to packet list */ |
| 508 | mlen = MIN(MLEN, count); |
| 509 | mlen = MIN(mlen, endp - pkt); |
| 510 | bcopy(pkt, mtod(*m, caddr_t), mlen); |
| 511 | (*m)->m_len = mlen; |
| 512 | m = &((*m)->m_next); |
| 513 | pkt += mlen; |
| 514 | count -= mlen; |
| 515 | |
| 516 | /* wrap memory pointer around circ buffer */ |
| 517 | if (pkt == endp) |
| 518 | pkt = (caddr_t)sc->we_vmem_ring; |
| 519 | } |
| 520 | |
| 521 | /* skip aligment bytes, send packet up to higher levels */ |
| 522 | if (m0 != 0) |
| 523 | { |
| 524 | /* m0->m_off += 2*/; |
| 525 | weread(sc, m0); |
| 526 | } |
| 527 | |
| 528 | outofbufs: |
| 529 | /* advance on chip Boundry register */ |
| 530 | printf("nx %x ", wer->we_next_packet); |
| 531 | bnry = wer->we_next_packet; |
| 532 | wecmd.cs_byte = inb(sc->we_io_nic_addr + WD_P0_COMMAND); |
| 533 | wecmd.cs_ps = 0; |
| 534 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 535 | |
| 536 | /* watch out for NIC overflow, reset Boundry if invalid */ |
| 537 | if ((bnry - 1) < WD_TXBUF_SIZE) { |
| 538 | #ifdef notdef |
| 539 | wereset(unit, 0); |
| 540 | break; |
| 541 | #else |
| 542 | outb(sc->we_io_nic_addr + WD_P0_BNRY, |
| 543 | (sc->we_vmem_size / WD_PAGE_SIZE) - 1); |
| 544 | #endif |
| 545 | } |
| 546 | outb(sc->we_io_nic_addr + WD_P0_BNRY, bnry-1); |
| 547 | |
| 548 | /* refresh our copy of CURR */ |
| 549 | wecmd.cs_ps = 1; |
| 550 | outb(sc->we_io_nic_addr + WD_P0_COMMAND, wecmd.cs_byte); |
| 551 | curr = inb(sc->we_io_nic_addr + WD_P1_CURR); |
| 552 | printf("bd %x cur %x ", bnry-1, curr); |
| 553 | } |
| 554 | printf("bD %x\n", bnry); |
| 555 | Bdry = bnry; |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Ethernet output routine. |
| 560 | * Encapsulate a packet of type family for the local net. |
| 561 | */ |
| 562 | weoutput(ifp, m0, dst) |
| 563 | struct ifnet *ifp; |
| 564 | struct mbuf *m0; |
| 565 | struct sockaddr *dst; |
| 566 | { |
| 567 | int type, s, error; |
| 568 | u_char edst[6]; |
| 569 | struct in_addr idst; |
| 570 | register struct we_softc *sc = &we_softc[ifp->if_unit]; |
| 571 | register struct mbuf *m = m0; |
| 572 | register struct ether_header *eh; |
| 573 | int usetrailers; |
| 574 | |
| 575 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { |
| 576 | error = ENETDOWN; |
| 577 | goto bad; |
| 578 | } |
| 579 | |
| 580 | switch (dst->sa_family) { |
| 581 | |
| 582 | #ifdef INET |
| 583 | case AF_INET: |
| 584 | /* Note: we ignore usetrailers */ |
| 585 | idst = ((struct sockaddr_in *)dst)->sin_addr; |
| 586 | if (!arpresolve(&sc->we_ac, m, &idst, edst, &usetrailers)) |
| 587 | return (0); /* if not yet resolved */ |
| 588 | type = ETHERTYPE_IP; |
| 589 | break; |
| 590 | #endif |
| 591 | #ifdef NS |
| 592 | case AF_NS: |
| 593 | type = ETHERTYPE_NS; |
| 594 | bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), |
| 595 | (caddr_t)edst, sizeof (edst)); |
| 596 | break; |
| 597 | #endif |
| 598 | |
| 599 | |
| 600 | case AF_UNSPEC: |
| 601 | eh = (struct ether_header *)dst->sa_data; |
| 602 | bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst)); |
| 603 | type = eh->ether_type; |
| 604 | break; |
| 605 | |
| 606 | default: |
| 607 | printf("we%d: can't handle af%d\n", ifp->if_unit, |
| 608 | dst->sa_family); |
| 609 | error = EAFNOSUPPORT; |
| 610 | goto bad; |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * Add local net header. If no space in first mbuf, |
| 615 | * allocate another. |
| 616 | */ |
| 617 | if (m->m_off > MMAXOFF || MMINOFF + ETHER_HDR_SIZE > m->m_off) { |
| 618 | m = m_get(M_DONTWAIT, MT_HEADER); |
| 619 | if (m == 0) { |
| 620 | error = ENOBUFS; |
| 621 | goto bad; |
| 622 | } |
| 623 | m->m_next = m0; |
| 624 | m->m_off = MMINOFF; |
| 625 | m->m_len = ETHER_HDR_SIZE; |
| 626 | } else { |
| 627 | m->m_off -= ETHER_HDR_SIZE; |
| 628 | m->m_len += ETHER_HDR_SIZE; |
| 629 | } |
| 630 | eh = mtod(m, struct ether_header *); |
| 631 | eh->ether_type = htons((u_short)type); |
| 632 | bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); |
| 633 | bcopy((caddr_t)sc->we_addr, (caddr_t)eh->ether_shost, |
| 634 | sizeof (sc->we_addr)); |
| 635 | |
| 636 | /* |
| 637 | * Queue message on interface, and start output if interface |
| 638 | * not yet active. |
| 639 | */ |
| 640 | s = splimp(); |
| 641 | if (IF_QFULL(&ifp->if_snd)) { |
| 642 | IF_DROP(&ifp->if_snd); |
| 643 | (void) splx(s); |
| 644 | m_freem(m); |
| 645 | return (ENOBUFS); |
| 646 | } |
| 647 | IF_ENQUEUE(&ifp->if_snd, m); |
| 648 | (void) splx(s); |
| 649 | westart(ifp->if_unit); |
| 650 | return (0); |
| 651 | |
| 652 | bad: |
| 653 | m_freem(m0); |
| 654 | return (error); |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * Process an ioctl request. |
| 659 | */ |
| 660 | weioctl(ifp, cmd, data) |
| 661 | register struct ifnet *ifp; |
| 662 | int cmd; |
| 663 | caddr_t data; |
| 664 | { |
| 665 | struct we_softc *sc = &we_softc[ifp->if_unit]; |
| 666 | struct ifaddr *ifa = (struct ifaddr *)data; |
| 667 | int s = splimp(), error = 0; |
| 668 | |
| 669 | switch (cmd) { |
| 670 | |
| 671 | case SIOCSIFADDR: |
| 672 | ifp->if_flags |= IFF_UP; |
| 673 | weinit(ifp->if_unit); |
| 674 | switch(ifa->ifa_addr.sa_family) { |
| 675 | #ifdef INET |
| 676 | case AF_INET: |
| 677 | ((struct arpcom *)ifp)->ac_ipaddr = |
| 678 | IA_SIN(ifa)->sin_addr; |
| 679 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); |
| 680 | break; |
| 681 | #endif |
| 682 | #ifdef NS |
| 683 | case AF_NS: |
| 684 | { |
| 685 | register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); |
| 686 | |
| 687 | if (ns_nullhost(*ina)) |
| 688 | ina->x_host = *(union ns_host *)(sc->we_addr); |
| 689 | else |
| 690 | wesetaddr(ina->x_host.c_host, ifp->if_unit); |
| 691 | break; |
| 692 | } |
| 693 | #endif |
| 694 | } |
| 695 | break; |
| 696 | |
| 697 | case SIOCSIFFLAGS: |
| 698 | if (((ifp->if_flags & IFF_UP) == 0) && |
| 699 | (sc->we_flags & WDF_RUNNING)) { |
| 700 | westop(ifp->if_unit); |
| 701 | } else if (((ifp->if_flags & IFF_UP) == IFF_UP) && |
| 702 | ((sc->we_flags & WDF_RUNNING) == 0)) |
| 703 | weinit(ifp->if_unit); |
| 704 | break; |
| 705 | |
| 706 | default: |
| 707 | error = EINVAL; |
| 708 | |
| 709 | } |
| 710 | (void) splx(s); |
| 711 | return (error); |
| 712 | } |
| 713 | |
| 714 | /* |
| 715 | * set ethernet address for unit |
| 716 | */ |
| 717 | wesetaddr(physaddr, unit) |
| 718 | u_char *physaddr; |
| 719 | int unit; |
| 720 | { |
| 721 | register struct we_softc *sc = &we_softc[unit]; |
| 722 | register int i; |
| 723 | |
| 724 | /* |
| 725 | * Rewrite ethernet address, and then force restart of NIC |
| 726 | */ |
| 727 | for (i = 0; i < ETHER_ADDR_LEN; i++) |
| 728 | sc->we_addr[i] = physaddr[i]; |
| 729 | sc->we_flags &= ~WDF_RUNNING; |
| 730 | weinit(unit); |
| 731 | } |
| 732 | |
| 733 | /* |
| 734 | * Pass a packet to the higher levels. |
| 735 | * NO TRAILER PROTOCOL! |
| 736 | */ |
| 737 | weread(sc, m) |
| 738 | register struct we_softc *sc; |
| 739 | struct mbuf *m; |
| 740 | { |
| 741 | struct ether_header *eh; |
| 742 | int scn, type, s; |
| 743 | struct ifqueue *inq; |
| 744 | |
| 745 | /* |
| 746 | * Get ethernet protocol type out of ether header |
| 747 | */ |
| 748 | eh = mtod(m, struct ether_header *); |
| 749 | type = ntohs((u_short)eh->ether_type); |
| 750 | |
| 751 | /* |
| 752 | * Drop ethernet header |
| 753 | */ |
| 754 | m->m_off += ETHER_HDR_SIZE; |
| 755 | m->m_len -= ETHER_HDR_SIZE; |
| 756 | |
| 757 | /* |
| 758 | * Insert ifp pointer at start of packet |
| 759 | */ |
| 760 | m->m_off -= sizeof (struct ifnet *); |
| 761 | m->m_len += sizeof (struct ifnet *); |
| 762 | *(mtod(m, struct ifnet **)) = &sc->we_if; |
| 763 | |
| 764 | printf("ty %x ", type); |
| 765 | switch (type) { |
| 766 | |
| 767 | #ifdef INET |
| 768 | case ETHERTYPE_IP: |
| 769 | printf("ip "); |
| 770 | scn = NETISR_IP; |
| 771 | inq = &ipintrq; |
| 772 | break; |
| 773 | |
| 774 | case ETHERTYPE_ARP: |
| 775 | printf("arp "); |
| 776 | arpinput(&sc->we_ac, m); |
| 777 | return; |
| 778 | #endif |
| 779 | #ifdef NS |
| 780 | case ETHERTYPE_NS: |
| 781 | scn = NETISR_NS; |
| 782 | inq = &nsintrq; |
| 783 | break; |
| 784 | |
| 785 | #endif |
| 786 | |
| 787 | default: |
| 788 | m_freem(m); |
| 789 | return; |
| 790 | } |
| 791 | |
| 792 | s = splimp(); |
| 793 | if (IF_QFULL(inq)) { |
| 794 | IF_DROP(inq); |
| 795 | m_freem(m); |
| 796 | } else |
| 797 | IF_ENQUEUE(inq, m); |
| 798 | schednetisr(scn); |
| 799 | (void) splx(s); |
| 800 | } |
| 801 | |
| 802 | #endif |