/* * Copyright (c) 1988 Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Digital Equipment Corp. * * %sccs.include.redist.c% * * @(#)if_qe.c 7.19 (Berkeley) 12/16/90 */ /* from @(#)if_qe.c 1.15 (ULTRIX) 4/16/86 */ /**************************************************************** * * * Licensed from Digital Equipment Corporation * * Copyright (c) * * Digital Equipment Corporation * * Maynard, Massachusetts * * 1985, 1986 * * All rights reserved. * * * * The Information in this software is subject to change * * without notice and should not be construed as a commitment * * by Digital Equipment Corporation. Digital makes no * * representations about the suitability of this software for * * any purpose. It is supplied "As Is" without expressed or * * implied warranty. * * * * If the Regents of the University of California or its * * licensees modify the software in a manner creating * * derivative copyright rights, appropriate copyright * * legends may be placed on the derivative work in addition * * to that set forth above. * * * ****************************************************************/ /* --------------------------------------------------------------------- * Modification History * * 15-Apr-86 -- afd * Rename "unused_multi" to "qunused_multi" for extending Generic * kernel to MicroVAXen. * * 18-mar-86 -- jaw br/cvec changed to NOT use registers. * * 12 March 86 -- Jeff Chase * Modified to handle the new MCLGET macro * Changed if_qe_data.c to use more receive buffers * Added a flag to poke with adb to log qe_restarts on console * * 19 Oct 85 -- rjl * Changed the watch dog timer from 30 seconds to 3. VMS is using * less than 1 second in their's. Also turned the printf into an * mprintf. * * 09/16/85 -- Larry Cohen * Add 43bsd alpha tape changes for subnet routing * * 1 Aug 85 -- rjl * Panic on a non-existent memory interrupt and the case where a packet * was chained. The first should never happen because non-existant * memory interrupts cause a bus reset. The second should never happen * because we hang 2k input buffers on the device. * * 1 Aug 85 -- rich * Fixed the broadcast loopback code to handle Clusters without * wedging the system. * * 27 Feb. 85 -- ejf * Return default hardware address on ioctl request. * * 12 Feb. 85 -- ejf * Added internal extended loopback capability. * * 27 Dec. 84 -- rjl * Fixed bug that caused every other transmit descriptor to be used * instead of every descriptor. * * 21 Dec. 84 -- rjl * Added watchdog timer to mask hardware bug that causes device lockup. * * 18 Dec. 84 -- rjl * Reworked driver to use q-bus mapping routines. MicroVAX-I now does * copying instead of m-buf shuffleing. * A number of deficencies in the hardware/firmware were compensated * for. See comments in qestart and qerint. * * 14 Nov. 84 -- jf * Added usage counts for multicast addresses. * Updated general protocol support to allow access to the Ethernet * header. * * 04 Oct. 84 -- jf * Added support for new ioctls to add and delete multicast addresses * and set the physical address. * Add support for general protocols. * * 14 Aug. 84 -- rjl * Integrated Shannon changes. (allow arp above 1024 and ? ) * * 13 Feb. 84 -- rjl * * Initial version of driver. derived from IL driver. * * --------------------------------------------------------------------- */ #include "qe.h" #if NQE > 0 /* * Digital Q-BUS to NI Adapter */ #include "sys/param.h" #include "sys/systm.h" #include "sys/mbuf.h" #include "sys/buf.h" #include "sys/protosw.h" #include "sys/socket.h" #include "sys/vmmac.h" #include "sys/ioctl.h" #include "sys/errno.h" #include "sys/syslog.h" #include "sys/time.h" #include "sys/kernel.h" #include "net/if.h" #include "net/netisr.h" #include "net/route.h" #ifdef INET #include "netinet/in.h" #include "netinet/in_systm.h" #include "netinet/in_var.h" #include "netinet/ip.h" #include "netinet/if_ether.h" #endif #ifdef NS #include "netns/ns.h" #include "netns/ns_if.h" #endif #ifdef ISO #include "netiso/iso.h" #include "netiso/iso_var.h" extern char all_es_snpa[], all_is_snpa[], all_l1is_snpa[], all_l2is_snpa[]; #endif #include "../include/pte.h" #include "../include/cpu.h" #include "../include/mtpr.h" #include "if_qereg.h" #include "if_uba.h" #include "../uba/ubareg.h" #include "../uba/ubavar.h" #if NQE == 1 && !defined(QNIVERT) #define NRCV 15 /* Receive descriptors */ #else #define NRCV 10 /* Receive descriptors */ #endif #define NXMT 5 /* Transmit descriptors */ #define NTOT (NXMT + NRCV) #define QETIMEOUT 2 /* transmit timeout, must be > 1 */ #define QESLOWTIMEOUT 40 /* timeout when no xmits in progress */ #define MINDATA 60 /* * Ethernet software status per interface. * * Each interface is referenced by a network interface structure, * qe_if, which the routing code uses to locate the interface. * This structure contains the output queue for the interface, its address, ... */ struct qe_softc { struct arpcom qe_ac; /* Ethernet common part */ #define qe_if qe_ac.ac_if /* network-visible interface */ #define qe_addr qe_ac.ac_enaddr /* hardware Ethernet address */ struct ifubinfo qe_uba; /* Q-bus resources */ struct ifrw qe_ifr[NRCV]; /* for receive buffers; */ struct ifxmt qe_ifw[NXMT]; /* for xmit buffers; */ int qe_flags; /* software state */ #define QEF_RUNNING 0x01 #define QEF_SETADDR 0x02 #define QEF_FASTTIMEO 0x04 int setupaddr; /* mapping info for setup pkts */ int ipl; /* interrupt priority */ struct qe_ring *rringaddr; /* mapping info for rings */ struct qe_ring *tringaddr; /* "" */ struct qe_ring rring[NRCV+1]; /* Receive ring descriptors */ struct qe_ring tring[NXMT+1]; /* Transmit ring descriptors */ u_char setup_pkt[16][8]; /* Setup packet */ int rindex; /* Receive index */ int tindex; /* Transmit index */ int otindex; /* Old transmit index */ int qe_intvec; /* Interrupt vector */ struct qedevice *addr; /* device addr */ int setupqueued; /* setup packet queued */ int nxmit; /* Transmits in progress */ int qe_restarts; /* timeouts */ } qe_softc[NQE]; struct uba_device *qeinfo[NQE]; extern struct timeval time; int qeprobe(), qeattach(), qeintr(), qetimeout(); int qeinit(), qeioctl(), qereset(), qestart(); u_short qestd[] = { 0 }; struct uba_driver qedriver = { qeprobe, 0, qeattach, 0, qestd, "qe", qeinfo }; #define QEUNIT(x) minor(x) /* * The deqna shouldn't receive more than ETHERMTU + sizeof(struct ether_header) * but will actually take in up to 2048 bytes. To guard against the receiver * chaining buffers (which we aren't prepared to handle) we allocate 2kb * size buffers. */ #define MAXPACKETSIZE 2048 /* Should really be ETHERMTU */ /* * Probe the QNA to see if it's there */ qeprobe(reg, ui) caddr_t reg; struct uba_device *ui; { register int br, cvec; /* r11, r10 value-result */ register struct qedevice *addr = (struct qedevice *)reg; register struct qe_ring *rp; register struct qe_ring *prp; /* physical rp */ register int i; register struct qe_softc *sc = &qe_softc[ui->ui_unit]; #ifdef lint br = 0; cvec = br; br = cvec; qeintr(0); #endif /* * The QNA interrupts on i/o operations. To do an I/O operation * we have to setup the interface by transmitting a setup packet. */ addr->qe_csr = QE_RESET; addr->qe_csr &= ~QE_RESET; addr->qe_vector = (uba_hd[numuba].uh_lastiv -= 4); /* * Map the communications area and the setup packet. */ sc->setupaddr = uballoc(0, (caddr_t)sc->setup_pkt, sizeof(sc->setup_pkt), 0); sc->rringaddr = (struct qe_ring *) uballoc(0, (caddr_t)sc->rring, sizeof(struct qe_ring) * (NTOT+2), 0); prp = (struct qe_ring *)UBAI_ADDR((int)sc->rringaddr); /* * The QNA will loop the setup packet back to the receive ring * for verification, therefore we initialize the first * receive & transmit ring descriptors and link the setup packet * to them. */ qeinitdesc(sc->tring, (caddr_t)UBAI_ADDR(sc->setupaddr), sizeof(sc->setup_pkt)); qeinitdesc(sc->rring, (caddr_t)UBAI_ADDR(sc->setupaddr), sizeof(sc->setup_pkt)); rp = (struct qe_ring *)sc->tring; rp->qe_setup = 1; rp->qe_eomsg = 1; rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_valid = 1; rp = (struct qe_ring *)sc->rring; rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_valid = 1; /* * Get the addr off of the interface and place it into the setup * packet. This code looks strange due to the fact that the address * is placed in the setup packet in col. major order. */ for( i = 0 ; i < 6 ; i++ ) sc->setup_pkt[i][1] = addr->qe_sta_addr[i]; qesetup( sc ); /* * Start the interface and wait for the packet. */ (void) spl6(); addr->qe_csr = QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT; addr->qe_rcvlist_lo = (short)prp; addr->qe_rcvlist_hi = (short)((int)prp >> 16); prp += NRCV+1; addr->qe_xmtlist_lo = (short)prp; addr->qe_xmtlist_hi = (short)((int)prp >> 16); DELAY(10000); /* * All done with the bus resources. */ ubarelse(0, &sc->setupaddr); ubarelse(0, (int *)&sc->rringaddr); sc->ipl = br = qbgetpri(); return( sizeof(struct qedevice) ); } /* * Interface exists: make available by filling in network interface * record. System will initialize the interface when it is ready * to accept packets. */ qeattach(ui) struct uba_device *ui; { register struct qe_softc *sc = &qe_softc[ui->ui_unit]; register struct ifnet *ifp = &sc->qe_if; register struct qedevice *addr = (struct qedevice *)ui->ui_addr; register int i; ifp->if_unit = ui->ui_unit; ifp->if_name = "qe"; ifp->if_mtu = ETHERMTU; /* * The Deqna is cable of transmitting broadcasts, but * doesn't listen to its own. */ ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; /* * Read the address from the prom and save it. */ for( i=0 ; i<6 ; i++ ) sc->setup_pkt[i][1] = sc->qe_addr[i] = addr->qe_sta_addr[i] & 0xff; addr->qe_vector |= 1; printf("qe%d: %s, hardware address %s\n", ui->ui_unit, addr->qe_vector&01 ? "delqa":"deqna", ether_sprintf(sc->qe_addr)); addr->qe_vector &= ~1; /* * Save the vector for initialization at reset time. */ sc->qe_intvec = addr->qe_vector; ifp->if_init = qeinit; ifp->if_output = ether_output; ifp->if_start = qestart; ifp->if_ioctl = qeioctl; ifp->if_reset = qereset; ifp->if_watchdog = qetimeout; sc->qe_uba.iff_flags = UBA_CANTWAIT; if_attach(ifp); } /* * Reset of interface after UNIBUS reset. * If interface is on specified uba, reset its state. */ qereset(unit, uban) int unit, uban; { register struct uba_device *ui; if (unit >= NQE || (ui = qeinfo[unit]) == 0 || ui->ui_alive == 0 || ui->ui_ubanum != uban) return; printf(" qe%d", unit); qe_softc[unit].qe_if.if_flags &= ~IFF_RUNNING; qeinit(unit); } /* * Initialization of interface. */ qeinit(unit) int unit; { register struct qe_softc *sc = &qe_softc[unit]; register struct uba_device *ui = qeinfo[unit]; register struct qedevice *addr = (struct qedevice *)ui->ui_addr; register struct ifnet *ifp = &sc->qe_if; register i; int s; /* address not known */ if (ifp->if_addrlist == (struct ifaddr *)0) return; if (sc->qe_flags & QEF_RUNNING) return; if ((ifp->if_flags & IFF_RUNNING) == 0) { /* * map the communications area onto the device */ i = uballoc(0, (caddr_t)sc->rring, sizeof(struct qe_ring) * (NTOT+2), 0); if (i == 0) goto fail; sc->rringaddr = (struct qe_ring *)UBAI_ADDR(i); sc->tringaddr = sc->rringaddr + NRCV + 1; i = uballoc(0, (caddr_t)sc->setup_pkt, sizeof(sc->setup_pkt), 0); if (i == 0) goto fail; sc->setupaddr = UBAI_ADDR(i); /* * init buffers and maps */ if (if_ubaminit(&sc->qe_uba, ui->ui_ubanum, sizeof (struct ether_header), (int)btoc(MAXPACKETSIZE), sc->qe_ifr, NRCV, sc->qe_ifw, NXMT) == 0) { fail: printf("qe%d: can't allocate uba resources\n", unit); sc->qe_if.if_flags &= ~IFF_UP; return; } } /* * Init the buffer descriptors and indexes for each of the lists and * loop them back to form a ring. */ for (i = 0; i < NRCV; i++) { qeinitdesc( &sc->rring[i], (caddr_t)UBAI_ADDR(sc->qe_ifr[i].ifrw_info), MAXPACKETSIZE); sc->rring[i].qe_flag = sc->rring[i].qe_status1 = QE_NOTYET; sc->rring[i].qe_valid = 1; } qeinitdesc(&sc->rring[i], (caddr_t)NULL, 0); sc->rring[i].qe_addr_lo = (short)sc->rringaddr; sc->rring[i].qe_addr_hi = (short)((int)sc->rringaddr >> 16); sc->rring[i].qe_chain = 1; sc->rring[i].qe_flag = sc->rring[i].qe_status1 = QE_NOTYET; sc->rring[i].qe_valid = 1; for( i = 0 ; i <= NXMT ; i++ ) qeinitdesc(&sc->tring[i], (caddr_t)NULL, 0); i--; sc->tring[i].qe_addr_lo = (short)sc->tringaddr; sc->tring[i].qe_addr_hi = (short)((int)sc->tringaddr >> 16); sc->tring[i].qe_chain = 1; sc->tring[i].qe_flag = sc->tring[i].qe_status1 = QE_NOTYET; sc->tring[i].qe_valid = 1; sc->nxmit = sc->otindex = sc->tindex = sc->rindex = 0; /* * Take the interface out of reset, program the vector, * enable interrupts, and tell the world we are up. */ s = splimp(); addr->qe_vector = sc->qe_intvec; sc->addr = addr; addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT | QE_ILOOP; addr->qe_rcvlist_lo = (short)sc->rringaddr; addr->qe_rcvlist_hi = (short)((int)sc->rringaddr >> 16); ifp->if_flags |= IFF_UP | IFF_RUNNING; sc->qe_flags |= QEF_RUNNING; qesetup( sc ); (void) qestart( ifp ); sc->qe_if.if_timer = QESLOWTIMEOUT; /* Start watchdog */ splx( s ); } /* * Start output on interface. * */ qestart(ifp) struct ifnet *ifp; { int unit = ifp->if_unit; struct uba_device *ui = qeinfo[unit]; register struct qe_softc *sc = &qe_softc[unit]; register struct qedevice *addr; register struct qe_ring *rp; register index; struct mbuf *m; int buf_addr, len, s; s = splimp(); addr = (struct qedevice *)ui->ui_addr; /* * The deqna doesn't look at anything but the valid bit * to determine if it should transmit this packet. If you have * a ring and fill it the device will loop indefinately on the * packet and continue to flood the net with packets until you * break the ring. For this reason we never queue more than n-1 * packets in the transmit ring. * * The microcoders should have obeyed their own defination of the * flag and status words, but instead we have to compensate. */ for( index = sc->tindex; sc->tring[index].qe_valid == 0 && sc->nxmit < (NXMT-1) ; sc->tindex = index = ++index % NXMT){ rp = &sc->tring[index]; if( sc->setupqueued ) { buf_addr = sc->setupaddr; len = 128; rp->qe_setup = 1; sc->setupqueued = 0; } else { IF_DEQUEUE(&sc->qe_if.if_snd, m); if( m == 0 ){ splx(s); return (0); } buf_addr = sc->qe_ifw[index].ifw_info; len = if_ubaput(&sc->qe_uba, &sc->qe_ifw[index], m); } if( len < MINDATA ) len = MINDATA; /* * Does buffer end on odd byte ? */ if( len & 1 ) { len++; rp->qe_odd_end = 1; } rp->qe_buf_len = -(len/2); buf_addr = UBAI_ADDR(buf_addr); rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_addr_lo = (short)buf_addr; rp->qe_addr_hi = (short)(buf_addr >> 16); rp->qe_eomsg = 1; rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_valid = 1; if (sc->nxmit++ == 0) { sc->qe_flags |= QEF_FASTTIMEO; sc->qe_if.if_timer = QETIMEOUT; } /* * See if the xmit list is invalid. */ if( addr->qe_csr & QE_XL_INVALID ) { buf_addr = (int)(sc->tringaddr+index); addr->qe_xmtlist_lo = (short)buf_addr; addr->qe_xmtlist_hi = (short)(buf_addr >> 16); } } splx( s ); return (0); } /* * Ethernet interface interrupt processor */ qeintr(unit) int unit; { register struct qe_softc *sc = &qe_softc[unit]; struct qedevice *addr = (struct qedevice *)qeinfo[unit]->ui_addr; int buf_addr, csr; #ifdef notdef splx(sc->ipl); #else (void) splimp(); #endif if (!(sc->qe_flags & QEF_FASTTIMEO)) sc->qe_if.if_timer = QESLOWTIMEOUT; /* Restart timer clock */ csr = addr->qe_csr; addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT | QE_ILOOP; if( csr & QE_RCV_INT ) qerint( unit ); if( csr & QE_XMIT_INT ) qetint( unit ); if( csr & QE_NEX_MEM_INT ) printf("qe%d: Nonexistent memory interrupt\n", unit); if( addr->qe_csr & QE_RL_INVALID && sc->rring[sc->rindex].qe_status1 == QE_NOTYET ) { buf_addr = (int)&sc->rringaddr[sc->rindex]; addr->qe_rcvlist_lo = (short)buf_addr; addr->qe_rcvlist_hi = (short)(buf_addr >> 16); } } /* * Ethernet interface transmit interrupt. */ qetint(unit) int unit; { register struct qe_softc *sc = &qe_softc[unit]; register struct qe_ring *rp; register struct ifxmt *ifxp; int status1, setupflag; short len; while( sc->otindex != sc->tindex && sc->tring[sc->otindex].qe_status1 != QE_NOTYET && sc->nxmit > 0 ) { /* * Save the status words from the descriptor so that it can * be released. */ rp = &sc->tring[sc->otindex]; status1 = rp->qe_status1; setupflag = rp->qe_setup; len = (-rp->qe_buf_len) * 2; if( rp->qe_odd_end ) len++; /* * Init the buffer descriptor */ bzero((caddr_t)rp, sizeof(struct qe_ring)); if( --sc->nxmit == 0 ) { sc->qe_flags &= ~QEF_FASTTIMEO; sc->qe_if.if_timer = QESLOWTIMEOUT; } if( !setupflag ) { /* * Do some statistics. */ sc->qe_if.if_opackets++; sc->qe_if.if_collisions += ( status1 & QE_CCNT ) >> 4; if (status1 & QE_ERROR) sc->qe_if.if_oerrors++; ifxp = &sc->qe_ifw[sc->otindex]; if (ifxp->ifw_xtofree) { m_freem(ifxp->ifw_xtofree); ifxp->ifw_xtofree = 0; } } sc->otindex = ++sc->otindex % NXMT; } (void) qestart( &sc->qe_if ); } /* * Ethernet interface receiver interrupt. * If can't determine length from type, then have to drop packet. * Othewise decapsulate packet based on type and pass to type specific * higher-level input routine. */ qerint(unit) int unit; { register struct qe_softc *sc = &qe_softc[unit]; register struct qe_ring *rp; int len, status1, status2; int bufaddr; /* * Traverse the receive ring looking for packets to pass back. * The search is complete when we find a descriptor not in use. * * As in the transmit case the deqna doesn't honor it's own protocols * so there exists the possibility that the device can beat us around * the ring. The proper way to guard against this is to insure that * there is always at least one invalid descriptor. We chose instead * to make the ring large enough to minimize the problem. With a ring * size of 4 we haven't been able to see the problem. To be safe we * doubled that to 8. * */ for( ; sc->rring[sc->rindex].qe_status1 != QE_NOTYET ; sc->rindex = ++sc->rindex % NRCV ){ rp = &sc->rring[sc->rindex]; status1 = rp->qe_status1; status2 = rp->qe_status2; bzero((caddr_t)rp, sizeof(struct qe_ring)); if( (status1 & QE_MASK) == QE_MASK ) panic("qe: chained packet"); len = ((status1 & QE_RBL_HI) | (status2 & QE_RBL_LO)) + 60; sc->qe_if.if_ipackets++; if (status1 & QE_ERROR) { if ((status1 & QE_RUNT) == 0) sc->qe_if.if_ierrors++; } else { /* * We don't process setup packets. */ if( !(status1 & QE_ESETUP) ) qeread(sc, &sc->qe_ifr[sc->rindex], len - sizeof(struct ether_header)); } /* * Return the buffer to the ring */ bufaddr = (int)UBAI_ADDR(sc->qe_ifr[sc->rindex].ifrw_info); rp->qe_buf_len = -((MAXPACKETSIZE)/2); rp->qe_addr_lo = (short)bufaddr; rp->qe_addr_hi = (short)((int)bufaddr >> 16); rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_valid = 1; } } /* * Process an ioctl request. */ qeioctl(ifp, cmd, data) register struct ifnet *ifp; int cmd; caddr_t data; { struct qe_softc *sc = &qe_softc[ifp->if_unit]; struct ifaddr *ifa = (struct ifaddr *)data; int s = splimp(), error = 0; switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; qeinit(ifp->if_unit); switch(ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: ((struct arpcom *)ifp)->ac_ipaddr = IA_SIN(ifa)->sin_addr; arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); break; #endif #ifdef NS case AF_NS: { register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); if (ns_nullhost(*ina)) ina->x_host = *(union ns_host *)(sc->qe_addr); else qe_setaddr(ina->x_host.c_host, ifp->if_unit); break; } #endif } break; case SIOCSIFFLAGS: if ((ifp->if_flags & IFF_UP) == 0 && sc->qe_flags & QEF_RUNNING) { ((struct qedevice *) (qeinfo[ifp->if_unit]->ui_addr))->qe_csr = QE_RESET; sc->qe_flags &= ~QEF_RUNNING; } else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING && (sc->qe_flags & QEF_RUNNING) == 0) qerestart(sc); break; default: error = EINVAL; } splx(s); return (error); } /* * set ethernet address for unit */ qe_setaddr(physaddr, unit) u_char *physaddr; int unit; { register struct qe_softc *sc = &qe_softc[unit]; register int i; for (i = 0; i < 6; i++) sc->setup_pkt[i][1] = sc->qe_addr[i] = physaddr[i]; sc->qe_flags |= QEF_SETADDR; if (sc->qe_if.if_flags & IFF_RUNNING) qesetup(sc); qeinit(unit); } /* * Initialize a ring descriptor with mbuf allocation side effects */ qeinitdesc(rp, addr, len) register struct qe_ring *rp; caddr_t addr; /* mapped address */ int len; { /* * clear the entire descriptor */ bzero((caddr_t)rp, sizeof(struct qe_ring)); if( len ) { rp->qe_buf_len = -(len/2); rp->qe_addr_lo = (short)addr; rp->qe_addr_hi = (short)((int)addr >> 16); } } /* * Build a setup packet - the physical address will already be present * in first column. */ qesetup( sc ) struct qe_softc *sc; { register i, j; /* * Copy the target address to the rest of the entries in this row. */ for ( j = 0; j < 6 ; j++ ) for ( i = 2 ; i < 8 ; i++ ) sc->setup_pkt[j][i] = sc->setup_pkt[j][1]; /* * Duplicate the first half. */ bcopy((caddr_t)sc->setup_pkt[0], (caddr_t)sc->setup_pkt[8], 64); /* * Fill in the broadcast (and ISO multicast) address(es). */ for ( i = 0; i < 6 ; i++ ) { sc->setup_pkt[i][2] = 0xff; #ifdef ISO sc->setup_pkt[i][3] = all_es_snpa[i]; sc->setup_pkt[i][4] = all_is_snpa[i]; sc->setup_pkt[i][5] = all_l1is_snpa[i]; sc->setup_pkt[i][6] = all_l2is_snpa[i]; #endif } sc->setupqueued++; } /* * Pass a packet to the higher levels. * We deal with the trailer protocol here. */ qeread(sc, ifrw, len) register struct qe_softc *sc; struct ifrw *ifrw; int len; { struct ether_header *eh; struct mbuf *m; int off, resid, s; struct ifqueue *inq; /* * Deal with trailer protocol: if type is INET trailer * get true type from first 16-bit word past data. * Remember that type was trailer by setting off. */ eh = (struct ether_header *)ifrw->ifrw_addr; eh->ether_type = ntohs((u_short)eh->ether_type); #define qedataaddr(eh, off, type) ((type)(((caddr_t)((eh)+1)+(off)))) if (eh->ether_type >= ETHERTYPE_TRAIL && eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { off = (eh->ether_type - ETHERTYPE_TRAIL) * 512; if (off >= ETHERMTU) return; /* sanity */ eh->ether_type = ntohs(*qedataaddr(eh,off, u_short *)); resid = ntohs(*(qedataaddr(eh, off+2, u_short *))); if (off + resid > len) return; /* sanity */ len = off + resid; } else off = 0; if (len == 0) return; /* * Pull packet off interface. Off is nonzero if packet * has trailing header; qeget will then force this header * information to be at the front, but we still have to drop * the type and length which are at the front of any trailer data. */ m = if_ubaget(&sc->qe_uba, ifrw, len, off, &sc->qe_if); if (m) ether_input(&sc->qe_if, eh, m); } /* * Watchdog timeout routine. There is a condition in the hardware that * causes the board to lock up under heavy load. This routine detects * the hang up and restarts the device. */ qetimeout(unit) int unit; { register struct qe_softc *sc; sc = &qe_softc[unit]; #ifdef notdef log(LOG_ERR, "qe%d: transmit timeout, restarted %d\n", unit, sc->qe_restarts++); #endif qerestart(sc); } /* * Restart for board lockup problem. */ qerestart(sc) register struct qe_softc *sc; { register struct ifnet *ifp = &sc->qe_if; register struct qedevice *addr = sc->addr; register struct qe_ring *rp; register i; addr->qe_csr = QE_RESET; addr->qe_csr &= ~QE_RESET; qesetup( sc ); for (i = 0, rp = sc->tring; i < NXMT; rp++, i++) { rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_valid = 0; } sc->nxmit = sc->otindex = sc->tindex = sc->rindex = 0; addr->qe_csr = QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT | QE_ILOOP; addr->qe_rcvlist_lo = (short)sc->rringaddr; addr->qe_rcvlist_hi = (short)((int)sc->rringaddr >> 16); sc->qe_flags |= QEF_RUNNING; (void) qestart(ifp); } #endif