![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to if_qe.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [CSRG BSD Unix] / 43BSDTahoe / sys / vaxif|
Return to if_qe.c CVS log | Up to [CSRG BSD Unix] / 43BSDTahoe / sys / vaxif |
1.1 ! root 1: /* @(#)if_qe.c 7.6 (Berkeley) 5/28/88 */ ! 2: ! 3: /* from @(#)if_qe.c 1.15 (ULTRIX) 4/16/86 */ ! 4: ! 5: ! 6: /**************************************************************** ! 7: * * ! 8: * Licensed from Digital Equipment Corporation * ! 9: * Copyright (c) * ! 10: * Digital Equipment Corporation * ! 11: * Maynard, Massachusetts * ! 12: * 1985, 1986 * ! 13: * All rights reserved. * ! 14: * * ! 15: * The Information in this software is subject to change * ! 16: * without notice and should not be construed as a commitment * ! 17: * by Digital Equipment Corporation. Digital makes no * ! 18: * representations about the suitability of this software for * ! 19: * any purpose. It is supplied "As Is" without expressed or * ! 20: * implied warranty. * ! 21: * * ! 22: * If the Regents of the University of California or its * ! 23: * licensees modify the software in a manner creating * ! 24: * derivative copyright rights, appropriate copyright * ! 25: * legends may be placed on the derivative work in addition * ! 26: * to that set forth above. * ! 27: * * ! 28: ****************************************************************/ ! 29: /* --------------------------------------------------------------------- ! 30: * Modification History ! 31: * ! 32: * 15-Apr-86 -- afd ! 33: * Rename "unused_multi" to "qunused_multi" for extending Generic ! 34: * kernel to MicroVAXen. ! 35: * ! 36: * 18-mar-86 -- jaw br/cvec changed to NOT use registers. ! 37: * ! 38: * 12 March 86 -- Jeff Chase ! 39: * Modified to handle the new MCLGET macro ! 40: * Changed if_qe_data.c to use more receive buffers ! 41: * Added a flag to poke with adb to log qe_restarts on console ! 42: * ! 43: * 19 Oct 85 -- rjl ! 44: * Changed the watch dog timer from 30 seconds to 3. VMS is using ! 45: * less than 1 second in their's. Also turned the printf into an ! 46: * mprintf. ! 47: * ! 48: * 09/16/85 -- Larry Cohen ! 49: * Add 43bsd alpha tape changes for subnet routing ! 50: * ! 51: * 1 Aug 85 -- rjl ! 52: * Panic on a non-existent memory interrupt and the case where a packet ! 53: * was chained. The first should never happen because non-existant ! 54: * memory interrupts cause a bus reset. The second should never happen ! 55: * because we hang 2k input buffers on the device. ! 56: * ! 57: * 1 Aug 85 -- rich ! 58: * Fixed the broadcast loopback code to handle Clusters without ! 59: * wedging the system. ! 60: * ! 61: * 27 Feb. 85 -- ejf ! 62: * Return default hardware address on ioctl request. ! 63: * ! 64: * 12 Feb. 85 -- ejf ! 65: * Added internal extended loopback capability. ! 66: * ! 67: * 27 Dec. 84 -- rjl ! 68: * Fixed bug that caused every other transmit descriptor to be used ! 69: * instead of every descriptor. ! 70: * ! 71: * 21 Dec. 84 -- rjl ! 72: * Added watchdog timer to mask hardware bug that causes device lockup. ! 73: * ! 74: * 18 Dec. 84 -- rjl ! 75: * Reworked driver to use q-bus mapping routines. MicroVAX-I now does ! 76: * copying instead of m-buf shuffleing. ! 77: * A number of deficencies in the hardware/firmware were compensated ! 78: * for. See comments in qestart and qerint. ! 79: * ! 80: * 14 Nov. 84 -- jf ! 81: * Added usage counts for multicast addresses. ! 82: * Updated general protocol support to allow access to the Ethernet ! 83: * header. ! 84: * ! 85: * 04 Oct. 84 -- jf ! 86: * Added support for new ioctls to add and delete multicast addresses ! 87: * and set the physical address. ! 88: * Add support for general protocols. ! 89: * ! 90: * 14 Aug. 84 -- rjl ! 91: * Integrated Shannon changes. (allow arp above 1024 and ? ) ! 92: * ! 93: * 13 Feb. 84 -- rjl ! 94: * ! 95: * Initial version of driver. derived from IL driver. ! 96: * ! 97: * --------------------------------------------------------------------- ! 98: */ ! 99: ! 100: #include "qe.h" ! 101: #if NQE > 0 ! 102: /* ! 103: * Digital Q-BUS to NI Adapter ! 104: */ ! 105: #include "param.h" ! 106: #include "systm.h" ! 107: #include "mbuf.h" ! 108: #include "buf.h" ! 109: #include "protosw.h" ! 110: #include "socket.h" ! 111: #include "vmmac.h" ! 112: #include "ioctl.h" ! 113: #include "errno.h" ! 114: #include "syslog.h" ! 115: #include "time.h" ! 116: #include "kernel.h" ! 117: ! 118: #include "../net/if.h" ! 119: #include "../net/netisr.h" ! 120: #include "../net/route.h" ! 121: ! 122: #ifdef INET ! 123: #include "../netinet/in.h" ! 124: #include "../netinet/in_systm.h" ! 125: #include "../netinet/in_var.h" ! 126: #include "../netinet/ip.h" ! 127: #include "../netinet/if_ether.h" ! 128: #endif ! 129: ! 130: #ifdef NS ! 131: #include "../netns/ns.h" ! 132: #include "../netns/ns_if.h" ! 133: #endif ! 134: ! 135: #include "../vax/pte.h" ! 136: #include "../vax/cpu.h" ! 137: #include "../vax/mtpr.h" ! 138: #include "if_qereg.h" ! 139: #include "if_uba.h" ! 140: #include "../vaxuba/ubareg.h" ! 141: #include "../vaxuba/ubavar.h" ! 142: ! 143: #if NQE > 1 ! 144: #define NRCV 15 /* Receive descriptors */ ! 145: #else ! 146: #define NRCV 20 /* Receive descriptors */ ! 147: #endif ! 148: #define NXMT 5 /* Transmit descriptors */ ! 149: #define NTOT (NXMT + NRCV) ! 150: ! 151: #define QETIMEOUT 2 /* transmit timeout, must be > 1 */ ! 152: ! 153: /* ! 154: * This constant should really be 60 because the qna adds 4 bytes of crc. ! 155: * However when set to 60 our packets are ignored by deuna's , 3coms are ! 156: * okay ?????????????????????????????????????????? ! 157: */ ! 158: #define MINDATA 64 ! 159: ! 160: /* ! 161: * Ethernet software status per interface. ! 162: * ! 163: * Each interface is referenced by a network interface structure, ! 164: * qe_if, which the routing code uses to locate the interface. ! 165: * This structure contains the output queue for the interface, its address, ... ! 166: */ ! 167: struct qe_softc { ! 168: struct arpcom qe_ac; /* Ethernet common part */ ! 169: #define qe_if qe_ac.ac_if /* network-visible interface */ ! 170: #define qe_addr qe_ac.ac_enaddr /* hardware Ethernet address */ ! 171: struct ifubinfo qe_uba; /* Q-bus resources */ ! 172: struct ifrw qe_ifr[NRCV]; /* for receive buffers; */ ! 173: struct ifxmt qe_ifw[NXMT]; /* for xmit buffers; */ ! 174: int qe_flags; /* software state */ ! 175: #define QEF_RUNNING 0x01 ! 176: #define QEF_SETADDR 0x02 ! 177: int setupaddr; /* mapping info for setup pkts */ ! 178: struct qe_ring *rringaddr; /* mapping info for rings */ ! 179: struct qe_ring *tringaddr; /* "" */ ! 180: struct qe_ring rring[NRCV+1]; /* Receive ring descriptors */ ! 181: struct qe_ring tring[NXMT+1]; /* Transmit ring descriptors */ ! 182: u_char setup_pkt[16][8]; /* Setup packet */ ! 183: int rindex; /* Receive index */ ! 184: int tindex; /* Transmit index */ ! 185: int otindex; /* Old transmit index */ ! 186: int qe_intvec; /* Interrupt vector */ ! 187: struct qedevice *addr; /* device addr */ ! 188: int setupqueued; /* setup packet queued */ ! 189: int nxmit; /* Transmits in progress */ ! 190: int qe_restarts; /* timeouts */ ! 191: } qe_softc[NQE]; ! 192: ! 193: struct uba_device *qeinfo[NQE]; ! 194: ! 195: extern struct timeval time; ! 196: ! 197: int qeprobe(), qeattach(), qeintr(), qetimeout(); ! 198: int qeinit(), qeoutput(), qeioctl(), qereset(); ! 199: ! 200: u_short qestd[] = { 0 }; ! 201: struct uba_driver qedriver = ! 202: { qeprobe, 0, qeattach, 0, qestd, "qe", qeinfo }; ! 203: ! 204: #define QE_TIMEO (15) ! 205: #define QEUNIT(x) minor(x) ! 206: static int mask = 0x3ffff; /* address mask */ ! 207: /* ! 208: * The deqna shouldn't receive more than ETHERMTU + sizeof(struct ether_header) ! 209: * but will actually take in up to 2048 bytes. To guard against the receiver ! 210: * chaining buffers (which we aren't prepared to handle) we allocate 2kb ! 211: * size buffers. ! 212: */ ! 213: #define MAXPACKETSIZE 2048 /* Should really be ETHERMTU */ ! 214: /* ! 215: * Probe the QNA to see if it's there ! 216: */ ! 217: qeprobe(reg) ! 218: caddr_t reg; ! 219: { ! 220: register int br, cvec; /* r11, r10 value-result */ ! 221: register struct qedevice *addr = (struct qedevice *)reg; ! 222: register struct qe_ring *rp; ! 223: register struct qe_ring *prp; /* physical rp */ ! 224: register int i, j; ! 225: static int next=0; /* softc index */ ! 226: register struct qe_softc *sc = &qe_softc[next++]; ! 227: ! 228: #ifdef lint ! 229: br = 0; cvec = br; br = cvec; ! 230: qeintr(0); ! 231: #endif ! 232: /* ! 233: * Set the address mask for the particular cpu ! 234: */ ! 235: mask = 0x3ffff; ! 236: ! 237: /* ! 238: * The QNA interrupts on i/o operations. To do an I/O operation ! 239: * we have to setup the interface by transmitting a setup packet. ! 240: */ ! 241: addr->qe_csr = QE_RESET; ! 242: addr->qe_vector = (uba_hd[numuba].uh_lastiv -= 4); ! 243: ! 244: /* ! 245: * Map the communications area and the setup packet. ! 246: */ ! 247: sc->setupaddr = ! 248: uballoc(0, (caddr_t)sc->setup_pkt, sizeof(sc->setup_pkt), 0); ! 249: sc->rringaddr = (struct qe_ring *) uballoc(0, (caddr_t)sc->rring, ! 250: sizeof(struct qe_ring) * (NTOT+2), 0); ! 251: prp = (struct qe_ring *)((int)sc->rringaddr & mask); ! 252: ! 253: /* ! 254: * The QNA will loop the setup packet back to the receive ring ! 255: * for verification, therefore we initialize the first ! 256: * receive & transmit ring descriptors and link the setup packet ! 257: * to them. ! 258: */ ! 259: qeinitdesc(sc->tring, (caddr_t)(sc->setupaddr & mask), ! 260: sizeof(sc->setup_pkt)); ! 261: qeinitdesc(sc->rring, (caddr_t)(sc->setupaddr & mask), ! 262: sizeof(sc->setup_pkt)); ! 263: ! 264: rp = (struct qe_ring *)sc->tring; ! 265: rp->qe_setup = 1; ! 266: rp->qe_eomsg = 1; ! 267: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 268: rp->qe_valid = 1; ! 269: ! 270: rp = (struct qe_ring *)sc->rring; ! 271: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 272: rp->qe_valid = 1; ! 273: ! 274: /* ! 275: * Get the addr off of the interface and place it into the setup ! 276: * packet. This code looks strange due to the fact that the address ! 277: * is placed in the setup packet in col. major order. ! 278: */ ! 279: for( i = 0 ; i < 6 ; i++ ) ! 280: sc->setup_pkt[i][1] = addr->qe_sta_addr[i]; ! 281: ! 282: qesetup( sc ); ! 283: /* ! 284: * Start the interface and wait for the packet. ! 285: */ ! 286: j = cvec; ! 287: addr->qe_csr = QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT; ! 288: addr->qe_rcvlist_lo = (short)prp; ! 289: addr->qe_rcvlist_hi = (short)((int)prp >> 16); ! 290: prp += NRCV+1; ! 291: addr->qe_xmtlist_lo = (short)prp; ! 292: addr->qe_xmtlist_hi = (short)((int)prp >> 16); ! 293: DELAY(10000); ! 294: /* ! 295: * All done with the bus resources. ! 296: */ ! 297: ubarelse(0, &sc->setupaddr); ! 298: ubarelse(0, (int *)&sc->rringaddr); ! 299: if( cvec == j ) ! 300: return 0; /* didn't interrupt */ ! 301: ! 302: br = 0x15; /* q-bus doesn't get level */ ! 303: return( sizeof(struct qedevice) ); ! 304: } ! 305: ! 306: /* ! 307: * Interface exists: make available by filling in network interface ! 308: * record. System will initialize the interface when it is ready ! 309: * to accept packets. ! 310: */ ! 311: qeattach(ui) ! 312: struct uba_device *ui; ! 313: { ! 314: register struct qe_softc *sc = &qe_softc[ui->ui_unit]; ! 315: register struct ifnet *ifp = &sc->qe_if; ! 316: register struct qedevice *addr = (struct qedevice *)ui->ui_addr; ! 317: register int i; ! 318: ! 319: ifp->if_unit = ui->ui_unit; ! 320: ifp->if_name = "qe"; ! 321: ifp->if_mtu = ETHERMTU; ! 322: ifp->if_flags = IFF_BROADCAST; ! 323: ! 324: /* ! 325: * Read the address from the prom and save it. ! 326: */ ! 327: for( i=0 ; i<6 ; i++ ) ! 328: sc->setup_pkt[i][1] = sc->qe_addr[i] = addr->qe_sta_addr[i] & 0xff; ! 329: printf("qe%d: hardware address %s\n", ui->ui_unit, ! 330: ether_sprintf(sc->qe_addr)); ! 331: ! 332: /* ! 333: * Save the vector for initialization at reset time. ! 334: */ ! 335: sc->qe_intvec = addr->qe_vector; ! 336: ! 337: ifp->if_init = qeinit; ! 338: ifp->if_output = qeoutput; ! 339: ifp->if_ioctl = qeioctl; ! 340: ifp->if_reset = qereset; ! 341: ifp->if_watchdog = qetimeout; ! 342: sc->qe_uba.iff_flags = UBA_CANTWAIT; ! 343: if_attach(ifp); ! 344: } ! 345: ! 346: /* ! 347: * Reset of interface after UNIBUS reset. ! 348: * If interface is on specified uba, reset its state. ! 349: */ ! 350: qereset(unit, uban) ! 351: int unit, uban; ! 352: { ! 353: register struct uba_device *ui; ! 354: ! 355: if (unit >= NQE || (ui = qeinfo[unit]) == 0 || ui->ui_alive == 0 || ! 356: ui->ui_ubanum != uban) ! 357: return; ! 358: printf(" qe%d", unit); ! 359: qe_softc[unit].qe_if.if_flags &= ~IFF_RUNNING; ! 360: qeinit(unit); ! 361: } ! 362: ! 363: /* ! 364: * Initialization of interface. ! 365: */ ! 366: qeinit(unit) ! 367: int unit; ! 368: { ! 369: register struct qe_softc *sc = &qe_softc[unit]; ! 370: register struct uba_device *ui = qeinfo[unit]; ! 371: register struct qedevice *addr = (struct qedevice *)ui->ui_addr; ! 372: register struct ifnet *ifp = &sc->qe_if; ! 373: register i; ! 374: int s; ! 375: ! 376: /* address not known */ ! 377: if (ifp->if_addrlist == (struct ifaddr *)0) ! 378: return; ! 379: if (sc->qe_flags & QEF_RUNNING) ! 380: return; ! 381: ! 382: if ((ifp->if_flags & IFF_RUNNING) == 0) { ! 383: /* ! 384: * map the communications area onto the device ! 385: */ ! 386: sc->rringaddr = (struct qe_ring *) ! 387: ((int) uballoc(0, (caddr_t)sc->rring, ! 388: sizeof(struct qe_ring) * (NTOT+2), 0) & mask); ! 389: sc->tringaddr = sc->rringaddr + NRCV + 1; ! 390: sc->setupaddr = uballoc(0, (caddr_t)sc->setup_pkt, ! 391: sizeof(sc->setup_pkt), 0) & mask; ! 392: /* ! 393: * init buffers and maps ! 394: */ ! 395: if (if_ubaminit(&sc->qe_uba, ui->ui_ubanum, ! 396: sizeof (struct ether_header), (int)btoc(MAXPACKETSIZE), ! 397: sc->qe_ifr, NRCV, sc->qe_ifw, NXMT) == 0) { ! 398: printf("qe%d: can't initialize\n", unit); ! 399: sc->qe_if.if_flags &= ~IFF_UP; ! 400: return; ! 401: } ! 402: } ! 403: /* ! 404: * Init the buffer descriptors and indexes for each of the lists and ! 405: * loop them back to form a ring. ! 406: */ ! 407: for (i = 0; i < NRCV; i++) { ! 408: qeinitdesc( &sc->rring[i], ! 409: (caddr_t)(sc->qe_ifr[i].ifrw_info & mask), MAXPACKETSIZE); ! 410: sc->rring[i].qe_flag = sc->rring[i].qe_status1 = QE_NOTYET; ! 411: sc->rring[i].qe_valid = 1; ! 412: } ! 413: qeinitdesc(&sc->rring[i], (caddr_t)NULL, 0); ! 414: ! 415: sc->rring[i].qe_addr_lo = (short)sc->rringaddr; ! 416: sc->rring[i].qe_addr_hi = (short)((int)sc->rringaddr >> 16); ! 417: sc->rring[i].qe_chain = 1; ! 418: sc->rring[i].qe_flag = sc->rring[i].qe_status1 = QE_NOTYET; ! 419: sc->rring[i].qe_valid = 1; ! 420: ! 421: for( i = 0 ; i <= NXMT ; i++ ) ! 422: qeinitdesc(&sc->tring[i], (caddr_t)NULL, 0); ! 423: i--; ! 424: ! 425: sc->tring[i].qe_addr_lo = (short)sc->tringaddr; ! 426: sc->tring[i].qe_addr_hi = (short)((int)sc->tringaddr >> 16); ! 427: sc->tring[i].qe_chain = 1; ! 428: sc->tring[i].qe_flag = sc->tring[i].qe_status1 = QE_NOTYET; ! 429: sc->tring[i].qe_valid = 1; ! 430: ! 431: sc->nxmit = sc->otindex = sc->tindex = sc->rindex = 0; ! 432: ! 433: /* ! 434: * Take the interface out of reset, program the vector, ! 435: * enable interrupts, and tell the world we are up. ! 436: */ ! 437: s = splimp(); ! 438: addr->qe_vector = sc->qe_intvec; ! 439: sc->addr = addr; ! 440: addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | ! 441: QE_RCV_INT | QE_ILOOP; ! 442: addr->qe_rcvlist_lo = (short)sc->rringaddr; ! 443: addr->qe_rcvlist_hi = (short)((int)sc->rringaddr >> 16); ! 444: ifp->if_flags |= IFF_UP | IFF_RUNNING; ! 445: sc->qe_flags |= QEF_RUNNING; ! 446: qesetup( sc ); ! 447: qestart( unit ); ! 448: splx( s ); ! 449: ! 450: } ! 451: ! 452: /* ! 453: * Start output on interface. ! 454: * ! 455: */ ! 456: qestart(unit) ! 457: int unit; ! 458: { ! 459: struct uba_device *ui = qeinfo[unit]; ! 460: register struct qe_softc *sc = &qe_softc[unit]; ! 461: register struct qedevice *addr; ! 462: register struct qe_ring *rp; ! 463: register index; ! 464: struct mbuf *m; ! 465: int buf_addr, len, s; ! 466: ! 467: ! 468: s = splimp(); ! 469: addr = (struct qedevice *)ui->ui_addr; ! 470: /* ! 471: * The deqna doesn't look at anything but the valid bit ! 472: * to determine if it should transmit this packet. If you have ! 473: * a ring and fill it the device will loop indefinately on the ! 474: * packet and continue to flood the net with packets until you ! 475: * break the ring. For this reason we never queue more than n-1 ! 476: * packets in the transmit ring. ! 477: * ! 478: * The microcoders should have obeyed their own defination of the ! 479: * flag and status words, but instead we have to compensate. ! 480: */ ! 481: for( index = sc->tindex; ! 482: sc->tring[index].qe_valid == 0 && sc->nxmit < (NXMT-1) ; ! 483: sc->tindex = index = ++index % NXMT){ ! 484: rp = &sc->tring[index]; ! 485: if( sc->setupqueued ) { ! 486: buf_addr = sc->setupaddr; ! 487: len = 128; ! 488: rp->qe_setup = 1; ! 489: sc->setupqueued = 0; ! 490: } else { ! 491: IF_DEQUEUE(&sc->qe_if.if_snd, m); ! 492: if( m == 0 ){ ! 493: splx(s); ! 494: return; ! 495: } ! 496: buf_addr = sc->qe_ifw[index].ifw_info; ! 497: len = if_ubaput(&sc->qe_uba, &sc->qe_ifw[index], m); ! 498: } ! 499: /* ! 500: * Does buffer end on odd byte ? ! 501: */ ! 502: if( len & 1 ) { ! 503: len++; ! 504: rp->qe_odd_end = 1; ! 505: } ! 506: if( len < MINDATA ) ! 507: len = MINDATA; ! 508: rp->qe_buf_len = -(len/2); ! 509: buf_addr &= mask; ! 510: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 511: rp->qe_addr_lo = (short)buf_addr; ! 512: rp->qe_addr_hi = (short)(buf_addr >> 16); ! 513: rp->qe_eomsg = 1; ! 514: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 515: rp->qe_valid = 1; ! 516: sc->nxmit++; ! 517: sc->qe_if.if_timer = QETIMEOUT; ! 518: ! 519: /* ! 520: * See if the xmit list is invalid. ! 521: */ ! 522: if( addr->qe_csr & QE_XL_INVALID ) { ! 523: buf_addr = (int)(sc->tringaddr+index); ! 524: addr->qe_xmtlist_lo = (short)buf_addr; ! 525: addr->qe_xmtlist_hi = (short)(buf_addr >> 16); ! 526: } ! 527: } ! 528: splx( s ); ! 529: } ! 530: ! 531: /* ! 532: * Ethernet interface interrupt processor ! 533: */ ! 534: qeintr(unit) ! 535: int unit; ! 536: { ! 537: register struct qe_softc *sc = &qe_softc[unit]; ! 538: struct qedevice *addr = (struct qedevice *)qeinfo[unit]->ui_addr; ! 539: int s, buf_addr, csr; ! 540: ! 541: s = splimp(); ! 542: csr = addr->qe_csr; ! 543: addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT | QE_ILOOP; ! 544: if( csr & QE_RCV_INT ) ! 545: qerint( unit ); ! 546: if( csr & QE_XMIT_INT ) ! 547: qetint( unit ); ! 548: if( csr & QE_NEX_MEM_INT ) ! 549: panic("qe: Non existant memory interrupt"); ! 550: ! 551: if( addr->qe_csr & QE_RL_INVALID && sc->rring[sc->rindex].qe_status1 == QE_NOTYET ) { ! 552: buf_addr = (int)&sc->rringaddr[sc->rindex]; ! 553: addr->qe_rcvlist_lo = (short)buf_addr; ! 554: addr->qe_rcvlist_hi = (short)(buf_addr >> 16); ! 555: } ! 556: splx( s ); ! 557: } ! 558: ! 559: /* ! 560: * Ethernet interface transmit interrupt. ! 561: */ ! 562: ! 563: qetint(unit) ! 564: int unit; ! 565: { ! 566: register struct qe_softc *sc = &qe_softc[unit]; ! 567: register struct qe_ring *rp; ! 568: register struct ifxmt *ifxp; ! 569: int status1, setupflag; ! 570: short len; ! 571: ! 572: ! 573: while( sc->otindex != sc->tindex && sc->tring[sc->otindex].qe_status1 != QE_NOTYET && sc->nxmit > 0 ) { ! 574: /* ! 575: * Save the status words from the descriptor so that it can ! 576: * be released. ! 577: */ ! 578: rp = &sc->tring[sc->otindex]; ! 579: status1 = rp->qe_status1; ! 580: setupflag = rp->qe_setup; ! 581: len = (-rp->qe_buf_len) * 2; ! 582: if( rp->qe_odd_end ) ! 583: len++; ! 584: /* ! 585: * Init the buffer descriptor ! 586: */ ! 587: bzero((caddr_t)rp, sizeof(struct qe_ring)); ! 588: if( --sc->nxmit == 0 ) ! 589: sc->qe_if.if_timer = 0; ! 590: if( !setupflag ) { ! 591: /* ! 592: * Do some statistics. ! 593: */ ! 594: sc->qe_if.if_opackets++; ! 595: sc->qe_if.if_collisions += ( status1 & QE_CCNT ) >> 4; ! 596: if (status1 & QE_ERROR) ! 597: sc->qe_if.if_oerrors++; ! 598: /* ! 599: * If this was a broadcast packet loop it ! 600: * back because the hardware can't hear its own ! 601: * transmits. ! 602: */ ! 603: ifxp = &sc->qe_ifw[sc->otindex]; ! 604: if (bcmp((caddr_t)((struct ether_header *)ifxp->ifw_addr)->ether_dhost, ! 605: (caddr_t)etherbroadcastaddr, ! 606: sizeof(etherbroadcastaddr)) == 0) ! 607: qeread(sc, &ifxp->ifrw, ! 608: len - sizeof(struct ether_header)); ! 609: if (ifxp->ifw_xtofree) { ! 610: m_freem(ifxp->ifw_xtofree); ! 611: ifxp->ifw_xtofree = 0; ! 612: } ! 613: } ! 614: sc->otindex = ++sc->otindex % NXMT; ! 615: } ! 616: qestart( unit ); ! 617: } ! 618: ! 619: /* ! 620: * Ethernet interface receiver interrupt. ! 621: * If can't determine length from type, then have to drop packet. ! 622: * Othewise decapsulate packet based on type and pass to type specific ! 623: * higher-level input routine. ! 624: */ ! 625: qerint(unit) ! 626: int unit; ! 627: { ! 628: register struct qe_softc *sc = &qe_softc[unit]; ! 629: register struct qe_ring *rp; ! 630: int len, status1, status2; ! 631: int bufaddr; ! 632: ! 633: /* ! 634: * Traverse the receive ring looking for packets to pass back. ! 635: * The search is complete when we find a descriptor not in use. ! 636: * ! 637: * As in the transmit case the deqna doesn't honor it's own protocols ! 638: * so there exists the possibility that the device can beat us around ! 639: * the ring. The proper way to guard against this is to insure that ! 640: * there is always at least one invalid descriptor. We chose instead ! 641: * to make the ring large enough to minimize the problem. With a ring ! 642: * size of 4 we haven't been able to see the problem. To be safe we ! 643: * doubled that to 8. ! 644: * ! 645: */ ! 646: for( ; sc->rring[sc->rindex].qe_status1 != QE_NOTYET ; sc->rindex = ++sc->rindex % NRCV ){ ! 647: rp = &sc->rring[sc->rindex]; ! 648: status1 = rp->qe_status1; ! 649: status2 = rp->qe_status2; ! 650: bzero((caddr_t)rp, sizeof(struct qe_ring)); ! 651: if( (status1 & QE_MASK) == QE_MASK ) ! 652: panic("qe: chained packet"); ! 653: len = ((status1 & QE_RBL_HI) | (status2 & QE_RBL_LO)) + 60; ! 654: sc->qe_if.if_ipackets++; ! 655: ! 656: if (status1 & QE_ERROR) { ! 657: if ((status1 & QE_RUNT) == 0) ! 658: sc->qe_if.if_ierrors++; ! 659: } else { ! 660: /* ! 661: * We don't process setup packets. ! 662: */ ! 663: if( !(status1 & QE_ESETUP) ) ! 664: qeread(sc, &sc->qe_ifr[sc->rindex], ! 665: len - sizeof(struct ether_header)); ! 666: } ! 667: /* ! 668: * Return the buffer to the ring ! 669: */ ! 670: bufaddr = (int)sc->qe_ifr[sc->rindex].ifrw_info & mask; ! 671: rp->qe_buf_len = -((MAXPACKETSIZE)/2); ! 672: rp->qe_addr_lo = (short)bufaddr; ! 673: rp->qe_addr_hi = (short)((int)bufaddr >> 16); ! 674: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 675: rp->qe_valid = 1; ! 676: } ! 677: } ! 678: /* ! 679: * Ethernet output routine. ! 680: * Encapsulate a packet of type family for the local net. ! 681: * Use trailer local net encapsulation if enough data in first ! 682: * packet leaves a multiple of 512 bytes of data in remainder. ! 683: */ ! 684: qeoutput(ifp, m0, dst) ! 685: struct ifnet *ifp; ! 686: struct mbuf *m0; ! 687: struct sockaddr *dst; ! 688: { ! 689: int type, s, error; ! 690: u_char edst[6]; ! 691: struct in_addr idst; ! 692: register struct qe_softc *is = &qe_softc[ifp->if_unit]; ! 693: register struct mbuf *m = m0; ! 694: register struct ether_header *eh; ! 695: register int off; ! 696: int usetrailers; ! 697: ! 698: if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { ! 699: error = ENETDOWN; ! 700: goto bad; ! 701: } ! 702: ! 703: switch (dst->sa_family) { ! 704: ! 705: #ifdef INET ! 706: case AF_INET: ! 707: idst = ((struct sockaddr_in *)dst)->sin_addr; ! 708: if (!arpresolve(&is->qe_ac, m, &idst, edst, &usetrailers)) ! 709: return (0); /* if not yet resolved */ ! 710: off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len; ! 711: if (usetrailers && off > 0 && (off & 0x1ff) == 0 && ! 712: m->m_off >= MMINOFF + 2 * sizeof (u_short)) { ! 713: type = ETHERTYPE_TRAIL + (off>>9); ! 714: m->m_off -= 2 * sizeof (u_short); ! 715: m->m_len += 2 * sizeof (u_short); ! 716: *mtod(m, u_short *) = htons((u_short)ETHERTYPE_IP); ! 717: *(mtod(m, u_short *) + 1) = htons((u_short)m->m_len); ! 718: goto gottrailertype; ! 719: } ! 720: type = ETHERTYPE_IP; ! 721: off = 0; ! 722: goto gottype; ! 723: #endif ! 724: #ifdef NS ! 725: case AF_NS: ! 726: type = ETHERTYPE_NS; ! 727: bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), ! 728: (caddr_t)edst, sizeof (edst)); ! 729: off = 0; ! 730: goto gottype; ! 731: #endif ! 732: ! 733: ! 734: case AF_UNSPEC: ! 735: eh = (struct ether_header *)dst->sa_data; ! 736: bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst)); ! 737: type = eh->ether_type; ! 738: goto gottype; ! 739: ! 740: default: ! 741: printf("qe%d: can't handle af%d\n", ifp->if_unit, ! 742: dst->sa_family); ! 743: error = EAFNOSUPPORT; ! 744: goto bad; ! 745: } ! 746: ! 747: gottrailertype: ! 748: /* ! 749: * Packet to be sent as trailer: move first packet ! 750: * (control information) to end of chain. ! 751: */ ! 752: while (m->m_next) ! 753: m = m->m_next; ! 754: m->m_next = m0; ! 755: m = m0->m_next; ! 756: m0->m_next = 0; ! 757: m0 = m; ! 758: ! 759: gottype: ! 760: /* ! 761: * Add local net header. If no space in first mbuf, ! 762: * allocate another. ! 763: */ ! 764: if (m->m_off > MMAXOFF || ! 765: MMINOFF + sizeof (struct ether_header) > m->m_off) { ! 766: m = m_get(M_DONTWAIT, MT_HEADER); ! 767: if (m == 0) { ! 768: error = ENOBUFS; ! 769: goto bad; ! 770: } ! 771: m->m_next = m0; ! 772: m->m_off = MMINOFF; ! 773: m->m_len = sizeof (struct ether_header); ! 774: } else { ! 775: m->m_off -= sizeof (struct ether_header); ! 776: m->m_len += sizeof (struct ether_header); ! 777: } ! 778: eh = mtod(m, struct ether_header *); ! 779: eh->ether_type = htons((u_short)type); ! 780: bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); ! 781: bcopy((caddr_t)is->qe_addr, (caddr_t)eh->ether_shost, sizeof (is->qe_addr)); ! 782: ! 783: /* ! 784: * Queue message on interface, and start output if interface ! 785: * not yet active. ! 786: */ ! 787: s = splimp(); ! 788: if (IF_QFULL(&ifp->if_snd)) { ! 789: IF_DROP(&ifp->if_snd); ! 790: splx(s); ! 791: m_freem(m); ! 792: return (ENOBUFS); ! 793: } ! 794: IF_ENQUEUE(&ifp->if_snd, m); ! 795: qestart(ifp->if_unit); ! 796: splx(s); ! 797: return (0); ! 798: ! 799: bad: ! 800: m_freem(m0); ! 801: return (error); ! 802: } ! 803: ! 804: ! 805: /* ! 806: * Process an ioctl request. ! 807: */ ! 808: qeioctl(ifp, cmd, data) ! 809: register struct ifnet *ifp; ! 810: int cmd; ! 811: caddr_t data; ! 812: { ! 813: struct qe_softc *sc = &qe_softc[ifp->if_unit]; ! 814: struct ifaddr *ifa = (struct ifaddr *)data; ! 815: int s = splimp(), error = 0; ! 816: ! 817: switch (cmd) { ! 818: ! 819: case SIOCSIFADDR: ! 820: ifp->if_flags |= IFF_UP; ! 821: qeinit(ifp->if_unit); ! 822: switch(ifa->ifa_addr.sa_family) { ! 823: #ifdef INET ! 824: case AF_INET: ! 825: ((struct arpcom *)ifp)->ac_ipaddr = ! 826: IA_SIN(ifa)->sin_addr; ! 827: arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); ! 828: break; ! 829: #endif ! 830: #ifdef NS ! 831: case AF_NS: ! 832: { ! 833: register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); ! 834: ! 835: if (ns_nullhost(*ina)) ! 836: ina->x_host = *(union ns_host *)(sc->qe_addr); ! 837: else ! 838: qe_setaddr(ina->x_host.c_host, ifp->if_unit); ! 839: break; ! 840: } ! 841: #endif ! 842: } ! 843: break; ! 844: ! 845: case SIOCSIFFLAGS: ! 846: if ((ifp->if_flags & IFF_UP) == 0 && ! 847: sc->qe_flags & QEF_RUNNING) { ! 848: ((struct qedevice *) ! 849: (qeinfo[ifp->if_unit]->ui_addr))->qe_csr = QE_RESET; ! 850: sc->qe_flags &= ~QEF_RUNNING; ! 851: } else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == ! 852: IFF_RUNNING && (sc->qe_flags & QEF_RUNNING) == 0) ! 853: qerestart(sc); ! 854: break; ! 855: ! 856: default: ! 857: error = EINVAL; ! 858: ! 859: } ! 860: splx(s); ! 861: return (error); ! 862: } ! 863: ! 864: /* ! 865: * set ethernet address for unit ! 866: */ ! 867: qe_setaddr(physaddr, unit) ! 868: u_char *physaddr; ! 869: int unit; ! 870: { ! 871: register struct qe_softc *sc = &qe_softc[unit]; ! 872: register int i; ! 873: ! 874: for (i = 0; i < 6; i++) ! 875: sc->setup_pkt[i][1] = sc->qe_addr[i] = physaddr[i]; ! 876: sc->qe_flags |= QEF_SETADDR; ! 877: if (sc->qe_if.if_flags & IFF_RUNNING) ! 878: qesetup(sc); ! 879: qeinit(unit); ! 880: } ! 881: ! 882: ! 883: /* ! 884: * Initialize a ring descriptor with mbuf allocation side effects ! 885: */ ! 886: qeinitdesc(rp, addr, len) ! 887: register struct qe_ring *rp; ! 888: caddr_t addr; /* mapped address */ ! 889: int len; ! 890: { ! 891: /* ! 892: * clear the entire descriptor ! 893: */ ! 894: bzero((caddr_t)rp, sizeof(struct qe_ring)); ! 895: ! 896: if( len ) { ! 897: rp->qe_buf_len = -(len/2); ! 898: rp->qe_addr_lo = (short)addr; ! 899: rp->qe_addr_hi = (short)((int)addr >> 16); ! 900: } ! 901: } ! 902: /* ! 903: * Build a setup packet - the physical address will already be present ! 904: * in first column. ! 905: */ ! 906: qesetup( sc ) ! 907: struct qe_softc *sc; ! 908: { ! 909: register i, j; ! 910: ! 911: /* ! 912: * Copy the target address to the rest of the entries in this row. ! 913: */ ! 914: for ( j = 0; j < 6 ; j++ ) ! 915: for ( i = 2 ; i < 8 ; i++ ) ! 916: sc->setup_pkt[j][i] = sc->setup_pkt[j][1]; ! 917: /* ! 918: * Duplicate the first half. ! 919: */ ! 920: bcopy((caddr_t)sc->setup_pkt[0], (caddr_t)sc->setup_pkt[8], 64); ! 921: /* ! 922: * Fill in the broadcast address. ! 923: */ ! 924: for ( i = 0; i < 6 ; i++ ) ! 925: sc->setup_pkt[i][2] = 0xff; ! 926: sc->setupqueued++; ! 927: } ! 928: ! 929: /* ! 930: * Pass a packet to the higher levels. ! 931: * We deal with the trailer protocol here. ! 932: */ ! 933: qeread(sc, ifrw, len) ! 934: register struct qe_softc *sc; ! 935: struct ifrw *ifrw; ! 936: int len; ! 937: { ! 938: struct ether_header *eh; ! 939: struct mbuf *m; ! 940: int off, resid; ! 941: struct ifqueue *inq; ! 942: ! 943: /* ! 944: * Deal with trailer protocol: if type is INET trailer ! 945: * get true type from first 16-bit word past data. ! 946: * Remember that type was trailer by setting off. ! 947: */ ! 948: ! 949: eh = (struct ether_header *)ifrw->ifrw_addr; ! 950: eh->ether_type = ntohs((u_short)eh->ether_type); ! 951: #define qedataaddr(eh, off, type) ((type)(((caddr_t)((eh)+1)+(off)))) ! 952: if (eh->ether_type >= ETHERTYPE_TRAIL && ! 953: eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { ! 954: off = (eh->ether_type - ETHERTYPE_TRAIL) * 512; ! 955: if (off >= ETHERMTU) ! 956: return; /* sanity */ ! 957: eh->ether_type = ntohs(*qedataaddr(eh,off, u_short *)); ! 958: resid = ntohs(*(qedataaddr(eh, off+2, u_short *))); ! 959: if (off + resid > len) ! 960: return; /* sanity */ ! 961: len = off + resid; ! 962: } else ! 963: off = 0; ! 964: if (len == 0) ! 965: return; ! 966: ! 967: /* ! 968: * Pull packet off interface. Off is nonzero if packet ! 969: * has trailing header; qeget will then force this header ! 970: * information to be at the front, but we still have to drop ! 971: * the type and length which are at the front of any trailer data. ! 972: */ ! 973: m = if_ubaget(&sc->qe_uba, ifrw, len, off, &sc->qe_if); ! 974: ! 975: if (m == 0) ! 976: return; ! 977: ! 978: if (off) { ! 979: struct ifnet *ifp; ! 980: ! 981: ifp = *(mtod(m, struct ifnet **)); ! 982: m->m_off += 2 * sizeof (u_short); ! 983: m->m_len -= 2 * sizeof (u_short); ! 984: *(mtod(m, struct ifnet **)) = ifp; ! 985: } ! 986: switch (eh->ether_type) { ! 987: ! 988: #ifdef INET ! 989: case ETHERTYPE_IP: ! 990: schednetisr(NETISR_IP); ! 991: inq = &ipintrq; ! 992: break; ! 993: ! 994: case ETHERTYPE_ARP: ! 995: arpinput(&sc->qe_ac, m); ! 996: return; ! 997: #endif ! 998: #ifdef NS ! 999: case ETHERTYPE_NS: ! 1000: schednetisr(NETISR_NS); ! 1001: inq = &nsintrq; ! 1002: break; ! 1003: ! 1004: #endif ! 1005: ! 1006: default: ! 1007: m_freem(m); ! 1008: return; ! 1009: } ! 1010: ! 1011: if (IF_QFULL(inq)) { ! 1012: IF_DROP(inq); ! 1013: m_freem(m); ! 1014: return; ! 1015: } ! 1016: IF_ENQUEUE(inq, m); ! 1017: } ! 1018: ! 1019: /* ! 1020: * Watchdog timeout routine. There is a condition in the hardware that ! 1021: * causes the board to lock up under heavy load. This routine detects ! 1022: * the hang up and restarts the device. ! 1023: */ ! 1024: qetimeout(unit) ! 1025: int unit; ! 1026: { ! 1027: register struct qe_softc *sc; ! 1028: ! 1029: sc = &qe_softc[unit]; ! 1030: log(LOG_ERR, "qe%d: transmit timeout, restarted %d\n", ! 1031: unit, ++sc->qe_restarts); ! 1032: qerestart(sc); ! 1033: } ! 1034: /* ! 1035: * Restart for board lockup problem. ! 1036: */ ! 1037: qerestart(sc) ! 1038: register struct qe_softc *sc; ! 1039: { ! 1040: register struct ifnet *ifp = &sc->qe_if; ! 1041: register struct qedevice *addr = sc->addr; ! 1042: register struct qe_ring *rp; ! 1043: register i; ! 1044: ! 1045: addr->qe_csr = QE_RESET; ! 1046: qesetup( sc ); ! 1047: for (i = 0, rp = sc->tring; i < NXMT; rp++, i++) { ! 1048: rp->qe_flag = rp->qe_status1 = QE_NOTYET; ! 1049: rp->qe_valid = 0; ! 1050: } ! 1051: sc->nxmit = sc->otindex = sc->tindex = sc->rindex = 0; ! 1052: addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | ! 1053: QE_RCV_INT | QE_ILOOP; ! 1054: addr->qe_rcvlist_lo = (short)sc->rringaddr; ! 1055: addr->qe_rcvlist_hi = (short)((int)sc->rringaddr >> 16); ! 1056: sc->qe_flags |= QEF_RUNNING; ! 1057: qestart(ifp->if_unit); ! 1058: } ! 1059: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.