/*- * Copyright (c) 1990, 1991 William F. Jolitz. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: if_hp.c,v 1.11 1993/12/20 09:05:58 mycroft Exp $ */ /* * HP LAN Ethernet driver * * Parts inspired from Tim Tucker's if_wd driver for the wd8003, * insight on the ne2000 gained from Robert Clements PC/FTP driver. * * receive bottom end totally rewritten by Curt Mayer, Dec 1992. * no longer loses back to back packets. * note to driver writers: RTFM! * * hooks for packet filter added by Charles Hannum, 29DEC1992. * * Mostly rewritten for HP-labelled EISA controllers by Charles Hannum, * 18JAN1993. */ #include "hp.h" #if NHP > 0 #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #ifdef NS #include #include #endif #include "bpfilter.h" #if NBPFILTER > 0 #include #include #include #endif #include #include #include #include int hpprobe (), hpattach (), hpintr (); int hpstart (), hpinit (), ether_output (), hpioctl (); struct isa_driver hpdriver = { hpprobe, hpattach, "hp", }; struct mbuf *hpget (); #define ETHER_MIN_LEN 64 #define ETHER_MAX_LEN 1536 /* * Ethernet software status per interface. * * Each interface is referenced by a network interface structure, * ns_if, which the routing code uses to locate the interface. * This structure contains the output queue for the interface, its address, ... */ struct hp_softc { struct arpcom ns_ac; /* Ethernet common part */ #define ns_if ns_ac.ac_if /* network-visible interface */ #define ns_addrp ns_ac.ac_enaddr /* hardware Ethernet address */ int ns_flags; #define DSF_LOCK 1 /* block re-entering enstart */ int ns_oactive; int ns_mask; struct prhdr ns_ph; /* hardware header of incoming packet*/ u_char ns_pb[2048]; u_char ns_txstart; /* transmitter buffer start */ u_char ns_rxstart; /* receiver buffer start */ u_char ns_rxend; /* receiver buffer end */ u_char hp_type; /* HP board type */ u_char hp_irq; /* interrupt vector */ short ns_port; /* i/o port base */ short ns_mode; /* word/byte mode */ short ns_rcr; #if NBPFILTER > 0 caddr_t ns_bpf; #endif } hp_softc[NHP]; #define ENBUFSIZE (sizeof(struct ether_header) + ETHERMTU + 2 + ETHER_MIN_LEN) #define PAT(n) (0xa55a + 37*(n)) u_short boarddata[16]; #define hp_option (-8) #define hp_data (-4) #define HP_RUN (0x01) #define HP_DATA (0x10) hpprobe (dvp) struct isa_device *dvp; { int val, i, s, sum, pat; register struct hp_softc *ns = &hp_softc[0]; register hpc; #ifdef lint hpintr (0); #endif hpc = (ns->ns_port = dvp->id_iobase + 0x10); s = splnet (); ns->hp_irq = ffs(dvp->id_irq) - 1; /* Extract board address */ for (i = 0; i < 6; i++) ns->ns_addrp[i] = inb (hpc - 0x10 + i); ns->hp_type = inb (hpc - 0x10 + 7); if (ns->ns_addrp[0] != 0x08 || ns->ns_addrp[1] != 0x00 || ns->ns_addrp[2] != 0x09) { splx (s); return 0; } /* Word Transfers, Burst Mode Select, Fifo at 8 bytes */ /* On this board, WTS means 32-bit transfers, which is still experimental. - mycroft, 18JAN93 */ #ifdef HP_32BIT ns->ns_mode = DSDC_WTS | DSDC_BMS | DSDC_FT1; #else ns->ns_mode = DSDC_BMS | DSDC_FT1; #endif ns->ns_txstart = 0 * 1024 / DS_PGSIZE; ns->ns_rxend = 32 * 1024 / DS_PGSIZE; ns->ns_rxstart = ns->ns_txstart + (PKTSZ / DS_PGSIZE); outb (hpc + hp_option, HP_RUN); #if 0 outb (hpc + ds0_isr, 0xff); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_STOP); DELAY (1000); /* Check cmd reg and fail if not right */ if ((i = inb (hpc + ds_cmd)) != (DSCM_NODMA | DSCM_PG0 | DSCM_STOP)) { splx (s); return (0); } #endif outb (hpc + hp_option, 0); splx (s); return (32); } /* * Fetch from onboard ROM/RAM */ hpfetch (ns, up, ad, len) struct hp_softc *ns; caddr_t up; { u_char cmd; register hpc = ns->ns_port; int counter = 100000; outb (hpc + hp_option, inb (hpc + hp_option) | HP_DATA); cmd = inb (hpc + ds_cmd); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); /* Setup remote dma */ outb (hpc + ds0_isr, DSIS_RDC); if (ns->ns_mode & DSDC_WTS) len = (len + 3) & ~3; else len = (len + 1) & ~1; outb (hpc + ds0_rbcr0, len); outb (hpc + ds0_rbcr1, len >> 8); outb (hpc + ds0_rsar0, ad); outb (hpc + ds0_rsar1, ad >> 8); #ifdef HP_DEBUG printf ("hpfetch: len=%d ioaddr=0x%03x addr=0x%04x option=0x%02x %d-bit\n", len, hpc+hp_data, ad, inb (hpc + hp_option), ns->ns_mode & DSDC_WTS ? 32 : 16); printf ("hpfetch: cmd=0x%02x isr=0x%02x ", inb (hpc + ds_cmd), inb (hpc + ds0_isr)); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG2 | DSCM_START); printf ("imr=0x%02x rcr=0x%02x tcr=0x%02x dcr=0x%02x\n", inb (hpc + ds0_imr), inb (hpc + ds0_rcr), inb (hpc + ds0_tcr), inb (hpc + ds0_dcr)); #endif /* Execute & extract from card */ outb (hpc + ds_cmd, DSCM_RREAD | DSCM_PG0 | DSCM_START); #ifdef HP_32BIT if (ns->ns_mode & DSDC_WTS) len = (caddr_t) insd (hpc + hp_data, up, len >> 2) - up; else #endif len = (caddr_t) insw (hpc + hp_data, up, len >> 1) - up; #ifdef HP_DEBUG printf ("hpfetch: done len=%d\n", len); #endif /* Wait till done, then shutdown feature */ while ((inb (hpc + ds0_isr) & DSIS_RDC) == 0 && counter-- > 0) ; outb (hpc + ds0_isr, DSIS_RDC); outb (hpc + ds_cmd, cmd); outb (hpc + hp_option, inb (hpc + hp_option) & ~HP_DATA); } /* * Put to onboard RAM */ hpput (ns, up, ad, len) struct hp_softc *ns; caddr_t up; { u_char cmd; register hpc = ns->ns_port; int counter = 100000; outb (hpc + hp_option, inb (hpc + hp_option) | HP_DATA); cmd = inb (hpc + ds_cmd); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); /* Setup for remote dma */ outb (hpc + ds0_isr, DSIS_RDC); if (ns->ns_mode & DSDC_WTS) len = (len + 3) & ~3; else len = (len + 1) & ~1; #ifdef HP_DEBUG printf ("hpput: len=%d ioaddr=0x%03x addr=0x%04x option=0x%02x %d-bit\n", len, hpc+hp_data, ad, inb (hpc + hp_option), ns->ns_mode & DSDC_WTS ? 32 : 16); printf ("hpput: cmd=0x%02x isr=0x%02x ", inb (hpc + ds_cmd), inb (hpc + ds0_isr)); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG2 | DSCM_START); printf ("imr=0x%02x rcr=0x%02x tcr=0x%02x dcr=0x%02x\n", inb (hpc + ds0_imr), inb (hpc + ds0_rcr), inb (hpc + ds0_tcr), inb (hpc + ds0_dcr)); { unsigned char *p = (unsigned char *) up; int n = len; printf ("hpput:"); while (n--) printf (" %02x", *(p++)); printf ("\n"); } #endif outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); outb (hpc + ds0_rbcr0, 0xff); outb (hpc + ds_cmd, DSCM_RREAD | DSCM_PG0 | DSCM_START); outb (hpc + ds0_rbcr0, len); outb (hpc + ds0_rbcr1, len >> 8); outb (hpc + ds0_rsar0, ad); outb (hpc + ds0_rsar1, ad >> 8); /* Execute & stuff to card */ outb (hpc + ds_cmd, DSCM_RWRITE | DSCM_PG0 | DSCM_START); #ifdef HP_32BIT if (ns->ns_mode & DSDC_WTS) len = (caddr_t) outsd (hpc + hp_data, up, len >> 2) - up; else #endif len = (caddr_t) outsw (hpc + hp_data, up, len >> 1) - up; #ifdef HP_DEBUG printf ("hpput: done len=%d\n", len); #endif /* Wait till done, then shutdown feature */ while ((inb (hpc + ds0_isr) & DSIS_RDC) == 0 && counter-- > 0) ; outb (hpc + ds0_isr, DSIS_RDC); outb (hpc + ds_cmd, cmd); outb (hpc + hp_option, inb (hpc + hp_option) & ~HP_DATA); } /* * Reset of interface. */ hpreset (unit, uban) int unit, uban; { register struct hp_softc *ns = &hp_softc[unit]; register hpc = ns->ns_port; if (unit >= NHP) return; printf ("hp%d: reset\n", unit); outb (hpc + hp_option, 0); ns->ns_flags &= ~DSF_LOCK; hpinit (unit); } static char * hp_id (type) u_char type; { static struct { u_char type; char *name; } boards[] = { { 0x00, "hp27240" } , { 0x10, "hp24240" } , { 0x01, "hp27245" } , { 0x02, "hp27250" } , { 0x81, "hp27247" } , { 0x91, "hp27247r1" } }; int n = sizeof (boards) / sizeof (boards[0]); while (n) if (boards[--n].type == type) return boards[n].name; return "UNKNOWN"; } /* * Interface exists: make available by filling in network interface * record. System will initialize the interface when it is ready * to accept packets. We get the ethernet address here. */ hpattach (dvp) struct isa_device *dvp; { int unit = dvp->id_unit; register struct hp_softc *ns = &hp_softc[unit]; register struct ifnet *ifp = &ns->ns_if; ifp->if_unit = unit; ifp->if_name = hpdriver.name; ifp->if_mtu = ETHERMTU; printf ("hp%d: %s %d-bit ethernet address %s\n", unit, hp_id (ns->hp_type), ns->ns_mode & DSDC_WTS ? 32 : 16, ether_sprintf (ns->ns_addrp)); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; ifp->if_init = hpinit; ifp->if_output = ether_output; ifp->if_start = hpstart; ifp->if_ioctl = hpioctl; ifp->if_reset = hpreset; ifp->if_watchdog = 0; if_attach (ifp); #if NBPFILTER > 0 bpfattach (&ns->ns_bpf, ifp, DLT_EN10MB, sizeof (struct ether_header)); #endif } /* * Initialization of interface; set up initialization block * and transmit/receive descriptor rings. */ hpinit (unit) int unit; { register struct hp_softc *ns = &hp_softc[unit]; struct ifnet *ifp = &ns->ns_if; int s; int i; char *cp; register hpc = ns->ns_port; if (ifp->if_addrlist == (struct ifaddr *) 0) return; if (ifp->if_flags & IFF_RUNNING) return; s = splnet (); #ifdef HP_DEBUG printf ("hpinit: hp%d at 0x%x irq %d\n", unit, hpc, (int) ns->hp_irq); printf ("hpinit: promiscuous mode %s\n", ns->ns_if.if_flags & IFF_PROMISC ? "on" : "off"); #endif ns->ns_rcr = (ns->ns_if.if_flags & IFF_BROADCAST ? DSRC_AB : 0) | (ns->ns_if.if_flags & IFF_PROMISC ? DSRC_PRO : 0); #ifdef HP_LOG_ERRORS ns->ns_rcr |= DSRC_SEP; #endif /* set irq and turn on board */ outb (hpc + hp_option, HP_RUN | (ns->hp_irq << 1)); /* init regs */ outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_STOP); outb (hpc + ds0_dcr, 0); outb (hpc + ds0_rbcr0, 0); outb (hpc + ds0_rbcr1, 0); outb (hpc + ds0_rcr, DSRC_MON); outb (hpc + ds0_tpsr, ns->ns_txstart); outb (hpc + ds0_imr, 0); outb (hpc + ds0_tcr, DSTC_LB0); outb (hpc + ds0_pstart, ns->ns_rxstart); outb (hpc + ds0_bnry, ns->ns_rxend-1); outb (hpc + ds0_pstop, ns->ns_rxend); outb (hpc + ds0_isr, 0xff); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG1 | DSCM_STOP); outb (hpc + ds1_curr, ns->ns_rxstart); /* set physical address on ethernet */ for (i = 0; i < 6; i++) outb (hpc + ds1_par0 + i, ns->ns_addrp[i]); /* clr logical address hash filter for now */ for (i = 0; i < 8; i++) outb (hpc + ds1_mar0 + i, 0xff); /* fire it up */ outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); outb (hpc + ds0_dcr, ns->ns_mode); outb (hpc + ds0_rcr, ns->ns_rcr); outb (hpc + ds0_tcr, 0); outb (hpc + ds0_imr, 0xff); ns->ns_if.if_flags |= IFF_RUNNING; ns->ns_flags &= ~DSF_LOCK; ns->ns_oactive = 0; ns->ns_mask = ~0; hpstart (ifp); #ifdef HP_DEBUG printf ("hpinit: done\n", unit, hpc); #endif splx (s); } /* * Setup output on interface. * Get another datagram to send off of the interface queue, * and map it to the interface before starting the output. * called only at splnet or interrupt level. */ hpstart (ifp) struct ifnet *ifp; { register struct hp_softc *ns = &hp_softc[ifp->if_unit]; struct mbuf *m0, *m; int buffer; int len = 0, i, total, t; register hpc = ns->ns_port; /* * The DS8390 has only one transmit buffer, if it is busy we * must wait until the transmit interrupt completes. */ if (ns->ns_flags & DSF_LOCK) return; if (inb (hpc + ds_cmd) & DSCM_TRANS) return; if ((ns->ns_if.if_flags & IFF_RUNNING) == 0) return; IF_DEQUEUE (&ns->ns_if.if_snd, m); if (m == 0) return; /* * Copy the mbuf chain into the transmit buffer */ ns->ns_flags |= DSF_LOCK; /* prevent entering hpstart */ buffer = ns->ns_txstart * DS_PGSIZE; len = i = 0; t = 0; for (m0 = m; m != 0; m = m->m_next) t += m->m_len; m = m0; total = t; #ifdef HP_DEBUG printf ("hpstart: len=%d\n", total); #endif #if NBPFILTER > 0 if (ns->ns_bpf) bpf_mtap (ns->ns_bpf, m); #endif for (m0 = m; m != 0;) { if (m->m_len & 1 && t > m->m_len) { m->m_len -= 1; hpput (ns, mtod (m, caddr_t), buffer, m->m_len); t -= m->m_len; buffer += m->m_len; m->m_data += m->m_len; m->m_len = 1; m = m_pullup (m, 2); } else { hpput (ns, mtod (m, caddr_t), buffer, m->m_len); t -= m->m_len; buffer += m->m_len; MFREE (m, m0); m = m0; } } /* * Init transmit length registers, and set transmit start flag. */ len = total; if (len < ETHER_MIN_LEN) len = ETHER_MIN_LEN; outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); outb (hpc + ds0_tbcr0, len & 0xff); outb (hpc + ds0_tbcr1, (len >> 8) & 0xff); outb (hpc + ds0_tpsr, ns->ns_txstart); outb (hpc + ds_cmd, DSCM_TRANS | DSCM_NODMA | DSCM_PG0 | DSCM_START); #ifdef HP_DEBUG printf ("hpstart: done\n", hpc); #endif } /* * Controller interrupt. */ hpintr (unit) { register struct hp_softc *ns = &hp_softc[unit]; u_char cmd, isr; register hpc = ns->ns_port; u_char err; /* Save cmd, clear interrupt */ cmd = inb (hpc + ds_cmd); loop: isr = inb (hpc + ds0_isr); outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); outb (hpc + ds0_isr, isr); /* Receiver error */ if (isr & DSIS_RXE) { /* need to read these registers to clear status */ err = inb (hpc + ds0_rsr); (void) inb (hpc + 0xD); (void) inb (hpc + 0xE); (void) inb (hpc + 0xF); ns->ns_if.if_ierrors++; #ifdef HP_LOG_ERRORS isr |= DSIS_RX; #endif } /* We received something */ if (isr & DSIS_RX) { u_char bnry; u_char curr; u_short addr; int len; int i; unsigned char c; while (1) { outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG0); bnry = inb (hpc + ds0_bnry); outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG1); curr = inb (hpc + ds1_curr); #ifdef HP_DEBUG printf ("hpintr: receive isr=0x%02x bnry=0x%02x curr=0x%02x\n", isr, bnry, curr); #endif if (++bnry >= ns->ns_rxend) bnry = ns->ns_rxstart; /* if ring empty, done! */ if (bnry == curr) break; addr = bnry * DS_PGSIZE; outb (hpc + hp_option, inb (hpc + hp_option) | HP_DATA); #if 0 /* send packet with auto packet release */ outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG0); outb (hpc + ds0_rbcr1, 0x0f); outb (hpc + ds0_dcr, ns->ns_mode | DSDC_AR); outb (hpc + ds_cmd, DSCM_SENDP | DSCM_PG0 | DSCM_START); #endif /* get length */ hpfetch (ns, (caddr_t) &ns->ns_ph, addr, sizeof ns->ns_ph); addr += sizeof ns->ns_ph; #ifdef HP_DEBUG printf ("hpintr: sendp packet hdr: %x %x %x %x\n", ns->ns_ph.pr_status, ns->ns_ph.pr_nxtpg, ns->ns_ph.pr_sz0, ns->ns_ph.pr_sz1); #endif #ifdef HP_LOG_ERRORS if (ns->ns_ph.pr_status & (DSRS_CRC|DSRS_FO|DSRS_DFR)) { /* Get packet header */ if (len > 14) len = 14; hpfetch (ns, (caddr_t) (ns->ns_pb), addr, len); /* move boundary up */ bnry = ns->ns_ph.pr_nxtpg; if (--bnry < ns->ns_rxstart) bnry = ns->ns_rxend-1; outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG0); outb (hpc + ds0_bnry, bnry); printf ("hp%d: receive error status=0x%02x\n", unit, ns->ns_ph.pr_status); printf ("hp%d: packet header:", unit); { int n; for (n = 0; n < len; n++) printf (" %02x", ns->ns_pb[n]); } printf ("\n"); continue; } #endif ns->ns_if.if_ipackets++; len = ns->ns_ph.pr_sz0 + (ns->ns_ph.pr_sz1 << 8); if (len < ETHER_MIN_LEN || len > ETHER_MAX_LEN) { printf ("hpintr: bnry %x curr %x\n", bnry, curr); printf ("hpintr: packet hdr: %x %x %x %x\n", ns->ns_ph.pr_status, ns->ns_ph.pr_nxtpg, ns->ns_ph.pr_sz0, ns->ns_ph.pr_sz1); printf ("isr = 0x%x reg_isr=0x%x\n", isr, inb (hpc + ds0_isr)); outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG0); bnry = inb (hpc + ds0_bnry); outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG1); curr = inb (hpc + ds1_curr); printf ("hpintr: new bnry %x curr %x\n", bnry, curr); printf ("hpintr: bad len %d\n-hanging-\n", len); while (1); } /* read packet */ hpfetch (ns, (caddr_t) (ns->ns_pb), addr, len); /* move boundary up */ bnry = ns->ns_ph.pr_nxtpg; if (--bnry < ns->ns_rxstart) bnry = ns->ns_rxend-1; outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA | DSCM_PG0); outb (hpc + ds0_bnry, bnry); #ifdef HP_DEBUG printf ("hpintr: receive done bnry=0x%02x\n", bnry); #endif outb (hpc + hp_option, inb (hpc + hp_option) & ~HP_DATA); /* adjust for ether header and checksum */ len -= sizeof (struct ether_header) + sizeof (long); /* process packet */ hpread (ns, (caddr_t) (ns->ns_pb), len); } } /* Transmit error */ if (isr & DSIS_TXE) { ns->ns_flags &= ~DSF_LOCK; /* Need to read these registers to clear status */ ns->ns_if.if_collisions += inb (hpc + ds0_tbcr0); ns->ns_if.if_oerrors++; } /* Packet Transmitted */ if (isr & DSIS_TX) { ns->ns_flags &= ~DSF_LOCK; ++ns->ns_if.if_opackets; ns->ns_if.if_collisions += inb (hpc + ds0_tbcr0); } /* Receiver ovverun? */ if (isr & DSIS_ROVRN) { log (LOG_ERR, "hp%d: error: isr %x\n", ns - hp_softc, isr /*, DSIS_BITS*/ ); outb (hpc + ds0_rbcr0, 0); outb (hpc + ds0_rbcr1, 0); outb (hpc + ds0_tcr, DSTC_LB0); outb (hpc + ds0_rcr, DSRC_MON); outb (hpc + ds_cmd, DSCM_START | DSCM_NODMA); outb (hpc + ds0_rcr, ns->ns_rcr); outb (hpc + ds0_tcr, 0); } /* Any more to send? */ outb (hpc + ds_cmd, DSCM_NODMA | DSCM_PG0 | DSCM_START); hpstart (&ns->ns_if); outb (hpc + ds_cmd, cmd); outb (hpc + ds0_imr, 0xff); /* Still more to do? */ isr = inb (hpc + ds0_isr); if (isr) goto loop; } /* * Pass a packet to the higher levels. * We deal with the trailer protocol here. */ hpread (ns, buf, len) register struct hp_softc *ns; char *buf; int len; { register struct ether_header *eh; struct mbuf *m; int off, resid; register struct ifqueue *inq; /* * Deal with trailer protocol: if type is trailer type * get true type from first 16-bit word past data. * Remember that type was trailer by setting off. */ eh = (struct ether_header *) buf; eh->ether_type = ntohs ((u_short) eh->ether_type); #define hpdataaddr(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 (*hpdataaddr (eh, off, u_short *)); resid = ntohs (*(hpdataaddr (eh, off + 2, u_short *))); if (off + resid > len) return; /* sanity */ len = off + resid; } else off = 0; if (len == 0) return; #if NBPFILTER > 0 if (ns->ns_bpf) bpf_tap (ns->ns_bpf, buf, len + sizeof (struct ether_header)); #endif if ((ns->ns_if.if_flags & IFF_PROMISC) && bcmp (eh->ether_dhost, ns->ns_addrp, sizeof (eh->ether_dhost)) != 0 && bcmp (eh->ether_dhost, etherbroadcastaddr, sizeof (eh->ether_dhost)) != 0) return; /* * Pull packet off interface. Off is nonzero if packet * has trailing header; hpget 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 = hpget (buf, len, off, &ns->ns_if); if (m == 0) return; ether_input (&ns->ns_if, eh, m); } /* * Supporting routines */ /* * Pull read data off a interface. * Len is length of data, with local net header stripped. * Off is non-zero if a trailer protocol was used, and * gives the offset of the trailer information. * We copy the trailer information and then all the normal * data into mbufs. When full cluster sized units are present * we copy into clusters. */ struct mbuf * hpget (buf, totlen, off0, ifp) caddr_t buf; int totlen, off0; struct ifnet *ifp; { struct mbuf *top, **mp, *m, *p; int off = off0, len; register caddr_t cp = buf; char *epkt; buf += sizeof (struct ether_header); cp = buf; epkt = cp + totlen; if (off) { cp += off + 2 * sizeof (u_short); totlen -= 2 * sizeof (u_short); } MGETHDR (m, M_DONTWAIT, MT_DATA); if (m == 0) return (0); m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = totlen; m->m_len = MHLEN; top = 0; mp = ⊤ while (totlen > 0) { if (top) { MGET (m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem (top); return (0); } m->m_len = MLEN; } len = min (totlen, epkt - cp); if (len >= MINCLSIZE) { MCLGET (m, M_DONTWAIT); if (m->m_flags & M_EXT) m->m_len = len = min (len, MCLBYTES); else len = m->m_len; } else { /* * Place initial small packet/header at end of mbuf. */ if (len < m->m_len) { if (top == 0 && len + max_linkhdr <= m->m_len) m->m_data += max_linkhdr; m->m_len = len; } else len = m->m_len; } bcopy (cp, mtod (m, caddr_t), (unsigned) len); cp += len; *mp = m; mp = &m->m_next; totlen -= len; if (cp == epkt) cp = buf; } return (top); } /* * Process an ioctl request. */ hpioctl (ifp, cmd, data) register struct ifnet *ifp; int cmd; caddr_t data; { register struct ifaddr *ifa = (struct ifaddr *) data; struct hp_softc *ns = &hp_softc[ifp->if_unit]; struct ifreq *ifr = (struct ifreq *) data; int s = splnet (), error = 0; switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: hpinit (ifp->if_unit);/* before arpwhohas */ ((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 *) (ns->ns_addrp); else { /* * The manual says we can't change the address * while the receiver is armed, * so reset everything */ ifp->if_flags &= ~IFF_RUNNING; bcopy ((caddr_t) ina->x_host.c_host, (caddr_t) ns->ns_addrp, sizeof (ns->ns_addrp)); } hpinit (ifp->if_unit); /* does hp_setaddr() */ break; } #endif default: hpinit (ifp->if_unit); break; } break; case SIOCSIFFLAGS: #ifdef HP_DEBUG printf ("hp: setting flags, up: %s, running: %s\n", ifp->if_flags & IFF_UP ? "yes" : "no", ifp->if_flags & IFF_RUNNING ? "yes" : "no"); #endif if ((ifp->if_flags & IFF_UP) == 0 && ifp->if_flags & IFF_RUNNING) { ifp->if_flags &= ~IFF_RUNNING; outb (ns->ns_port + ds_cmd, DSCM_STOP | DSCM_NODMA); } else if (ifp->if_flags & IFF_UP && (ifp->if_flags & IFF_RUNNING) == 0) hpinit (ifp->if_unit); break; #ifdef notdef case SIOCGHWADDR: bcopy ((caddr_t) ns->ns_addrp, (caddr_t) & ifr->ifr_data, sizeof (ns->ns_addrp)); break; #endif default: error = EINVAL; } splx (s); return (error); } #endif