diff options
Diffstat (limited to 'os/pc/wavelan.c')
| -rw-r--r-- | os/pc/wavelan.c | 1268 |
1 files changed, 1268 insertions, 0 deletions
diff --git a/os/pc/wavelan.c b/os/pc/wavelan.c new file mode 100644 index 00000000..0916f460 --- /dev/null +++ b/os/pc/wavelan.c @@ -0,0 +1,1268 @@ +/* + Lucent Wavelan IEEE 802.11 pcmcia. + There is almost no documentation for the card. + the driver is done using both the FreeBSD, Linux and + original Plan 9 drivers as `documentation'. + + Has been used with the card plugged in during all up time. + no cards removals/insertions yet. + + For known BUGS see the comments below. Besides, + the driver keeps interrupts disabled for just too + long. When it gets robust, locks should be revisited. + + BUGS: check endian, alignment and mem/io issues; + multicast; + receive watchdog interrupts. + TODO: automatic power management; + improve locking. + */ +#include "u.h" +#include "../port/lib.h" +#include "mem.h" +#include "dat.h" +#include "fns.h" +#include "io.h" +#include "../port/error.h" +#include "../port/netif.h" +#include "etherif.h" +#include "wavelan.h" + +enum +{ + MSperTick= 50, /* ms between ticks of kproc */ +}; + +/* + * When we're using a PCI device and memory-mapped I/O, + * the registers are spaced out as though each takes 32 bits, + * even though they are only 16-bit registers. Thus, + * ctlr->mmb[reg] is the right way to access register reg, + * even though a priori you'd expect to use ctlr->mmb[reg/2]. + */ +void +csr_outs(Ctlr *ctlr, int reg, ushort arg) +{ + if(ctlr->mmb) + ctlr->mmb[reg] = arg; + else + outs(ctlr->iob+reg, arg); +} + +ushort +csr_ins(Ctlr *ctlr, int reg) +{ + if(ctlr->mmb) + return ctlr->mmb[reg]; + else + return ins(ctlr->iob+reg); +} + +static void +csr_ack(Ctlr *ctlr, int ev) +{ + csr_outs(ctlr, WR_EvAck, ev); +} + +static void +csr_inss(Ctlr *ctlr, int reg, void *dat, int ndat) +{ + ushort *rp, *wp; + + if(ctlr->mmb){ + rp = &ctlr->mmb[reg]; + wp = dat; + while(ndat-- > 0) + *wp++ = *rp; + }else + inss(ctlr->iob+reg, dat, ndat); +} + +static void +csr_outss(Ctlr *ctlr, int reg, void *dat, int ndat) +{ + ushort *rp, *wp; + + if(ctlr->mmb){ + rp = dat; + wp = &ctlr->mmb[reg]; + while(ndat-- > 0) + *wp = *rp++; + }else + outss(ctlr->iob+reg, dat, ndat); +} + +// w_... routines do not ilock the Ctlr and should +// be called locked. + +void +w_intdis(Ctlr* ctlr) +{ + csr_outs(ctlr, WR_IntEna, 0); + csr_ack(ctlr, 0xffff); +} + +static void +w_intena(Ctlr* ctlr) +{ + csr_outs(ctlr, WR_IntEna, WEvs); +} + +int +w_cmd(Ctlr *ctlr, ushort cmd, ushort arg) +{ + int i, rc; + + for(i=0; i<WTmOut; i++) + if((csr_ins(ctlr, WR_Cmd)&WCmdBusy) == 0) + break; + if(i==WTmOut){ + print("#l%d: issuing cmd %.4ux: %.4ux\n", ctlr->ctlrno, cmd, csr_ins(ctlr, WR_Cmd)); + return -1; + } + + csr_outs(ctlr, WR_Parm0, arg); + csr_outs(ctlr, WR_Cmd, cmd); + + for(i=0; i<WTmOut; i++) + if(csr_ins(ctlr, WR_EvSts)&WCmdEv) + break; + if(i==WTmOut){ + /* + * WCmdIni can take a really long time. + */ + enum { IniTmOut = 2000 }; + for(i=0; i<IniTmOut; i++){ + if(csr_ins(ctlr, WR_EvSts)&WCmdEv) + break; + microdelay(100); + } + if(i < IniTmOut) + if(0) print("#l%d: long cmd %.4ux %d\n", ctlr->ctlrno, cmd, i); + if(i == IniTmOut){ + print("#l%d: execing cmd %.4ux: %.4ux\n", ctlr->ctlrno, cmd, csr_ins(ctlr, WR_EvSts)); + return -1; + } + } + rc = csr_ins(ctlr, WR_Sts); + csr_ack(ctlr, WCmdEv); + + if((rc&WCmdMsk) != (cmd&WCmdMsk)){ + print("#l%d: cmd %.4ux: status %.4ux\n", ctlr->ctlrno, cmd, rc); + return -1; + } + if(rc&WResSts){ + /* + * Don't print; this happens on every WCmdAccWr for some reason. + */ + if(0) print("#l%d: cmd %.4ux: status %.4ux\n", ctlr->ctlrno, cmd, rc); + return -1; + } + return 0; +} + +static int +w_seek(Ctlr* ctlr, ushort id, ushort offset, int chan) +{ + int i, rc; + static ushort sel[] = { WR_Sel0, WR_Sel1 }; + static ushort off[] = { WR_Off0, WR_Off1 }; + + if(chan != 0 && chan != 1) + panic("wavelan: bad chan\n"); + csr_outs(ctlr, sel[chan], id); + csr_outs(ctlr, off[chan], offset); + for (i=0; i<WTmOut; i++){ + rc = csr_ins(ctlr, off[chan]); + if((rc & (WBusyOff|WErrOff)) == 0) + return 0; + } + return -1; +} + +int +w_inltv(Ctlr* ctlr, Wltv* ltv) +{ + int len; + ushort code; + + if(w_cmd(ctlr, WCmdAccRd, ltv->type)){ + DEBUG("wavelan: access read failed\n"); + return -1; + } + if(w_seek(ctlr,ltv->type,0,1)){ + DEBUG("wavelan: seek failed\n"); + return -1; + } + len = csr_ins(ctlr, WR_Data1); + if(len > ltv->len) + return -1; + ltv->len = len; + if((code=csr_ins(ctlr, WR_Data1)) != ltv->type){ + USED(code); + DEBUG("wavelan: type %x != code %x\n",ltv->type,code); + return -1; + } + if(ltv->len > 0) + csr_inss(ctlr, WR_Data1, <v->val, ltv->len-1); + + return 0; +} + +static void +w_outltv(Ctlr* ctlr, Wltv* ltv) +{ + if(w_seek(ctlr,ltv->type, 0, 1)) + return; + csr_outss(ctlr, WR_Data1, ltv, ltv->len+1); + w_cmd(ctlr, WCmdAccWr, ltv->type); +} + +void +ltv_outs(Ctlr* ctlr, int type, ushort val) +{ + Wltv ltv; + + ltv.len = 2; + ltv.type = type; + ltv.val = val; + w_outltv(ctlr, <v); +} + +int +ltv_ins(Ctlr* ctlr, int type) +{ + Wltv ltv; + + ltv.len = 2; + ltv.type = type; + ltv.val = 0; + if(w_inltv(ctlr, <v)) + return -1; + return ltv.val; +} + +static void +ltv_outstr(Ctlr* ctlr, int type, char* val) +{ + Wltv ltv; + int len; + + len = strlen(val); + if(len > sizeof(ltv.s)) + len = sizeof(ltv.s); + memset(<v, 0, sizeof(ltv)); + ltv.len = (sizeof(ltv.type)+sizeof(ltv.slen)+sizeof(ltv.s))/2; + ltv.type = type; + +// This should be ltv.slen = len; according to Axel Belinfante + ltv.slen = len; + + strncpy(ltv.s, val, len); + w_outltv(ctlr, <v); +} + +static char Unkname[] = "who knows"; +static char Nilname[] = "card does not tell"; + +static char* +ltv_inname(Ctlr* ctlr, int type) +{ + static Wltv ltv; + int len; + + memset(<v,0,sizeof(ltv)); + ltv.len = WNameLen/2+2; + ltv.type = type; + if(w_inltv(ctlr, <v)) + return Unkname; + len = ltv.slen; + if(len == 0 || ltv.s[0] == 0) + return Nilname; + if(len >= sizeof ltv.s) + len = sizeof ltv.s - 1; + ltv.s[len] = '\0'; + return ltv.s; +} + +static int +w_read(Ctlr* ctlr, int type, int off, void* buf, ulong len) +{ + if(w_seek(ctlr, type, off, 1)){ + DEBUG("wavelan: w_read: seek failed"); + return 0; + } + csr_inss(ctlr, WR_Data1, buf, len/2); + + return len; +} + +static int +w_write(Ctlr* ctlr, int type, int off, void* buf, ulong len) +{ + int tries; + + for (tries=0; tries < WTmOut; tries++){ + if(w_seek(ctlr, type, off, 0)){ + DEBUG("wavelan: w_write: seek failed\n"); + return 0; + } + + csr_outss(ctlr, WR_Data0, buf, len/2); + + csr_outs(ctlr, WR_Data0, 0xdead); + csr_outs(ctlr, WR_Data0, 0xbeef); + if(w_seek(ctlr, type, off + len, 0)){ + DEBUG("wavelan: write seek failed\n"); + return 0; + } + if(csr_ins(ctlr, WR_Data0) == 0xdead) + if(csr_ins(ctlr, WR_Data0) == 0xbeef) + return len; + DEBUG("wavelan: Hermes bug byte.\n"); + return 0; + } + DEBUG("wavelan: tx timeout\n"); + return 0; +} + +static int +w_alloc(Ctlr* ctlr, int len) +{ + int rc; + int i,j; + + if(w_cmd(ctlr, WCmdMalloc, len)==0) + for (i = 0; i<WTmOut; i++) + if(csr_ins(ctlr, WR_EvSts) & WAllocEv){ + csr_ack(ctlr, WAllocEv); + rc=csr_ins(ctlr, WR_Alloc); + if(w_seek(ctlr, rc, 0, 0)) + return -1; + len = len/2; + for (j=0; j<len; j++) + csr_outs(ctlr, WR_Data0, 0); + return rc; + } + return -1; +} + +static int +w_enable(Ether* ether) +{ + Wltv ltv; + Ctlr* ctlr = (Ctlr*) ether->ctlr; + + if(!ctlr) + return -1; + + w_intdis(ctlr); + w_cmd(ctlr, WCmdDis, 0); + w_intdis(ctlr); + if(w_cmd(ctlr, WCmdIni, 0)) + return -1; + w_intdis(ctlr); + + ltv_outs(ctlr, WTyp_Tick, 8); + ltv_outs(ctlr, WTyp_MaxLen, ctlr->maxlen); + ltv_outs(ctlr, WTyp_Ptype, ctlr->ptype); + ltv_outs(ctlr, WTyp_CreateIBSS, ctlr->createibss); + ltv_outs(ctlr, WTyp_RtsThres, ctlr->rtsthres); + ltv_outs(ctlr, WTyp_TxRate, ctlr->txrate); + ltv_outs(ctlr, WTyp_ApDens, ctlr->apdensity); + ltv_outs(ctlr, WTyp_PMWait, ctlr->pmwait); + ltv_outs(ctlr, WTyp_PM, ctlr->pmena); + if(*ctlr->netname) + ltv_outstr(ctlr, WTyp_NetName, ctlr->netname); + if(*ctlr->wantname) + ltv_outstr(ctlr, WTyp_WantName, ctlr->wantname); + ltv_outs(ctlr, WTyp_Chan, ctlr->chan); + if(*ctlr->nodename) + ltv_outstr(ctlr, WTyp_NodeName, ctlr->nodename); + ltv.len = 4; + ltv.type = WTyp_Mac; + memmove(ltv.addr, ether->ea, Eaddrlen); + w_outltv(ctlr, <v); + + ltv_outs(ctlr, WTyp_Prom, (ether->prom?1:0)); + + if(ctlr->hascrypt && ctlr->crypt){ + ltv_outs(ctlr, WTyp_Crypt, ctlr->crypt); + ltv_outs(ctlr, WTyp_TxKey, ctlr->txkey); + w_outltv(ctlr, &ctlr->keys); + ltv_outs(ctlr, WTyp_XClear, ctlr->xclear); + } + + // BUG: set multicast addresses + + if(w_cmd(ctlr, WCmdEna, 0)){ + DEBUG("wavelan: Enable failed"); + return -1; + } + ctlr->txdid = w_alloc(ctlr, 1518 + sizeof(WFrame) + 8); + ctlr->txmid = w_alloc(ctlr, 1518 + sizeof(WFrame) + 8); + if(ctlr->txdid == -1 || ctlr->txmid == -1) + DEBUG("wavelan: alloc failed"); + ctlr->txbusy = 0; + w_intena(ctlr); + return 0; +} + +static void +w_rxdone(Ether* ether) +{ + Ctlr* ctlr = (Ctlr*) ether->ctlr; + int len, sp; + WFrame f; + Block* bp=0; + Etherpkt* ep; + + sp = csr_ins(ctlr, WR_RXId); + len = w_read(ctlr, sp, 0, &f, sizeof(f)); + if(len == 0){ + DEBUG("wavelan: read frame error\n"); + goto rxerror; + } + if(f.sts&WF_Err){ + goto rxerror; + } + switch(f.sts){ + case WF_1042: + case WF_Tunnel: + case WF_WMP: + len = f.dlen + WSnapHdrLen; + bp = iallocb(ETHERHDRSIZE + len + 2); + if(!bp) + goto rxerror; + ep = (Etherpkt*) bp->wp; + memmove(ep->d, f.addr1, Eaddrlen); + memmove(ep->s, f.addr2, Eaddrlen); + memmove(ep->type,&f.type,2); + bp->wp += ETHERHDRSIZE; + if(w_read(ctlr, sp, WF_802_11_Off, bp->wp, len+2) == 0){ + DEBUG("wavelan: read 802.11 error\n"); + goto rxerror; + } + bp->wp = bp->rp+(ETHERHDRSIZE+f.dlen); + break; + default: + len = ETHERHDRSIZE + f.dlen + 2; + bp = iallocb(len); + if(!bp) + goto rxerror; + if(w_read(ctlr, sp, WF_802_3_Off, bp->wp, len) == 0){ + DEBUG("wavelan: read 800.3 error\n"); + goto rxerror; + } + bp->wp += len; + } + + ctlr->nrx++; + etheriq(ether,bp,1); + ctlr->signal = ((ctlr->signal*15)+((f.qinfo>>8) & 0xFF))/16; + ctlr->noise = ((ctlr->noise*15)+(f.qinfo & 0xFF))/16; + return; + +rxerror: + freeb(bp); + ctlr->nrxerr++; +} + +static void +w_txstart(Ether* ether) +{ + Etherpkt *pkt; + Ctlr *ctlr; + Block *bp; + int len, off; + + if((ctlr = ether->ctlr) == nil || (ctlr->state & (Attached|Power)) != (Attached|Power) || ctlr->txbusy) + return; + + if((bp = qget(ether->oq)) == nil) + return; + pkt = (Etherpkt*)bp->rp; + + // + // If the packet header type field is > 1500 it is an IP or + // ARP datagram, otherwise it is an 802.3 packet. See RFC1042. + // + memset(&ctlr->txf, 0, sizeof(ctlr->txf)); + if(((pkt->type[0]<<8)|pkt->type[1]) > 1500){ + ctlr->txf.framectl = WF_Data; + memmove(ctlr->txf.addr1, pkt->d, Eaddrlen); + memmove(ctlr->txf.addr2, pkt->s, Eaddrlen); + memmove(ctlr->txf.dstaddr, pkt->d, Eaddrlen); + memmove(ctlr->txf.srcaddr, pkt->s, Eaddrlen); + memmove(&ctlr->txf.type, pkt->type, 2); + bp->rp += ETHERHDRSIZE; + len = BLEN(bp); + off = WF_802_11_Off; + ctlr->txf.dlen = len+ETHERHDRSIZE-WSnapHdrLen; + hnputs((uchar*)&ctlr->txf.dat[0], WSnap0); + hnputs((uchar*)&ctlr->txf.dat[1], WSnap1); + hnputs((uchar*)&ctlr->txf.len, len+ETHERHDRSIZE-WSnapHdrLen); + } + else{ + len = BLEN(bp); + off = WF_802_3_Off; + ctlr->txf.dlen = len; + } + w_write(ctlr, ctlr->txdid, 0, &ctlr->txf, sizeof(ctlr->txf)); + w_write(ctlr, ctlr->txdid, off, bp->rp, len+2); + + if(w_cmd(ctlr, WCmdReclaim|WCmdTx, ctlr->txdid)){ + DEBUG("wavelan: transmit failed\n"); + ctlr->ntxerr++; + } + else{ + ctlr->txbusy = 1; + ctlr->txtmout = 2; + } + freeb(bp); +} + +static void +w_txdone(Ctlr* ctlr, int sts) +{ + ctlr->txbusy = 0; + ctlr->txtmout = 0; + if(sts & WTxErrEv) + ctlr->ntxerr++; + else + ctlr->ntx++; +} + +/* save the stats info in the ctlr struct */ +static void +w_stats(Ctlr* ctlr, int len) +{ + int i, rc; + ulong* p = (ulong*)&ctlr->WStats; + ulong* pend = (ulong*)&ctlr->end; + + for (i = 0; i < len && p < pend; i++){ + rc = csr_ins(ctlr, WR_Data1); + if(rc > 0xf000) + rc = ~rc & 0xffff; + p[i] += rc; + } +} + +/* send the base station scan info to any readers */ +static void +w_scaninfo(Ether* ether, Ctlr *ctlr, int len) +{ + int i, j; + Netfile **ep, *f, **fp; + Block *bp; + WScan *wsp; + ushort *scanbuf; + + scanbuf = malloc(len*2); + if(scanbuf == nil) + return; + + for (i = 0; i < len ; i++) + scanbuf[i] = csr_ins(ctlr, WR_Data1); + + /* calculate number of samples */ + len /= 25; + if(len == 0) + goto out; + + i = ether->scan; + ep = ðer->f[Ntypes]; + for(fp = ether->f; fp < ep && i > 0; fp++){ + f = *fp; + if(f == nil || f->scan == 0) + continue; + + bp = iallocb(100*len); + if(bp == nil) + break; + for(j = 0; j < len; j++){ + wsp = (WScan*)(&scanbuf[j*25]); + if(wsp->ssid_len > 32) + wsp->ssid_len = 32; + bp->wp = (uchar*)seprint((char*)bp->wp, (char*)bp->lim, + "ssid=%.*s;bssid=%E;signal=%d;noise=%d;chan=%d%s\n", + wsp->ssid_len, wsp->ssid, wsp->bssid, wsp->signal, + wsp->noise, wsp->chan, (wsp->capinfo&(1<<4))?";wep":""); + } + qpass(f->in, bp); + i--; + } +out: + free(scanbuf); +} + +static int +w_info(Ether *ether, Ctlr* ctlr) +{ + int sp; + Wltv ltv; + + sp = csr_ins(ctlr, WR_InfoId); + ltv.len = ltv.type = 0; + w_read(ctlr, sp, 0, <v, 4); + ltv.len--; + switch(ltv.type){ + case WTyp_Stats: + w_stats(ctlr, ltv.len); + return 0; + case WTyp_Scan: + w_scaninfo(ether, ctlr, ltv.len); + return 0; + } + return -1; +} + +/* set scanning interval */ +static void +w_scanbs(void *a, uint secs) +{ + Ether *ether = a; + Ctlr* ctlr = (Ctlr*) ether->ctlr; + + ctlr->scanticks = secs*(1000/MSperTick); +} + +static void +w_intr(Ether *ether) +{ + int rc, txid; + Ctlr* ctlr = (Ctlr*) ether->ctlr; + + if((ctlr->state & Power) == 0) + return; + + if((ctlr->state & Attached) == 0){ + csr_ack(ctlr, 0xffff); + csr_outs(ctlr, WR_IntEna, 0); + return; + } + + rc = csr_ins(ctlr, WR_EvSts); + csr_ack(ctlr, ~WEvs); // Not interested in them + if(rc & WRXEv){ + w_rxdone(ether); + csr_ack(ctlr, WRXEv); + } + if(rc & WTXEv){ + w_txdone(ctlr, rc); + csr_ack(ctlr, WTXEv); + } + if(rc & WAllocEv){ + ctlr->nalloc++; + txid = csr_ins(ctlr, WR_Alloc); + csr_ack(ctlr, WAllocEv); + if(txid == ctlr->txdid){ + if((rc & WTXEv) == 0) + w_txdone(ctlr, rc); + } + } + if(rc & WInfoEv){ + ctlr->ninfo++; + w_info(ether, ctlr); + csr_ack(ctlr, WInfoEv); + } + if(rc & WTxErrEv){ + w_txdone(ctlr, rc); + csr_ack(ctlr, WTxErrEv); + } + if(rc & WIDropEv){ + ctlr->nidrop++; + csr_ack(ctlr, WIDropEv); + } + w_txstart(ether); +} + +// Watcher to ensure that the card still works properly and +// to request WStats updates once a minute. +// BUG: it runs much more often, see the comment below. + +static void +w_timer(void* arg) +{ + Ether* ether = (Ether*) arg; + Ctlr* ctlr = (Ctlr*)ether->ctlr; + + ctlr->timerproc = up; + for(;;){ + tsleep(&up->sleep, return0, 0, MSperTick); + ctlr = (Ctlr*)ether->ctlr; + if(ctlr == 0) + break; + if((ctlr->state & (Attached|Power)) != (Attached|Power)) + continue; + ctlr->ticks++; + + ilock(ctlr); + + // Seems that the card gets frames BUT does + // not send the interrupt; this is a problem because + // I suspect it runs out of receive buffers and + // stops receiving until a transmit watchdog + // reenables the card. + // The problem is serious because it leads to + // poor rtts. + // This can be seen clearly by commenting out + // the next if and doing a ping: it will stop + // receiving (although the icmp replies are being + // issued from the remote) after a few seconds. + // Of course this `bug' could be because I'm reading + // the card frames in the wrong way; due to the + // lack of documentation I cannot know. + + if(csr_ins(ctlr, WR_EvSts)&WEvs){ + ctlr->tickintr++; + w_intr(ether); + } + + if((ctlr->ticks % 10) == 0) { + if(ctlr->txtmout && --ctlr->txtmout == 0){ + ctlr->nwatchdogs++; + w_txdone(ctlr, WTxErrEv); + if(w_enable(ether)){ + DEBUG("wavelan: wdog enable failed\n"); + } + w_txstart(ether); + } + if((ctlr->ticks % 120) == 0) + if(ctlr->txbusy == 0) + w_cmd(ctlr, WCmdEnquire, WTyp_Stats); + if(ctlr->scanticks > 0) + if((ctlr->ticks % ctlr->scanticks) == 0) + if(ctlr->txbusy == 0) + w_cmd(ctlr, WCmdEnquire, WTyp_Scan); + } + iunlock(ctlr); + } + pexit("terminated", 0); +} + +void +w_multicast(void*, uchar*, int) +{ + // BUG: to be added. +} + +void +w_attach(Ether* ether) +{ + Ctlr* ctlr; + char name[64]; + int rc; + + if(ether->ctlr == 0) + return; + + snprint(name, sizeof(name), "#l%dtimer", ether->ctlrno); + ctlr = (Ctlr*) ether->ctlr; + if((ctlr->state & Attached) == 0){ + ilock(ctlr); + rc = w_enable(ether); + iunlock(ctlr); + if(rc == 0){ + ctlr->state |= Attached; + kproc(name, w_timer, ether, 0); + } else + print("#l%d: enable failed\n",ether->ctlrno); + } +} + +void +w_detach(Ether* ether) +{ + Ctlr* ctlr; + char name[64]; + + if(ether->ctlr == nil) + return; + + snprint(name, sizeof(name), "#l%dtimer", ether->ctlrno); + ctlr = (Ctlr*) ether->ctlr; + if(ctlr->state & Attached){ + ilock(ctlr); + w_intdis(ctlr); + if(ctlr->timerproc){ + if(!postnote(ctlr->timerproc, 1, "kill", 0)) + print("timerproc note not posted\n"); + print("w_detach, killing 0x%p\n", ctlr->timerproc); + } + ctlr->state &= ~Attached; + iunlock(ctlr); + } + ether->ctlr = nil; +} + +void +w_power(Ether* ether, int on) +{ + Ctlr *ctlr; + + ctlr = (Ctlr*) ether->ctlr; + ilock(ctlr); +iprint("w_power %d\n", on); + if(on){ + if((ctlr->state & Power) == 0){ + if (wavelanreset(ether, ctlr) < 0){ + iprint("w_power: reset failed\n"); + iunlock(ctlr); + w_detach(ether); + free(ctlr); + return; + } + if(ctlr->state & Attached) + w_enable(ether); + ctlr->state |= Power; + } + }else{ + if(ctlr->state & Power){ + if(ctlr->state & Attached) + w_intdis(ctlr); + ctlr->state &= ~Power; + } + } + iunlock(ctlr); +} + +#define PRINTSTAT(fmt,val) l += snprint(p+l, READSTR-l, (fmt), (val)) +#define PRINTSTR(fmt) l += snprint(p+l, READSTR-l, (fmt)) + +long +w_ifstat(Ether* ether, void* a, long n, ulong offset) +{ + Ctlr *ctlr = (Ctlr*) ether->ctlr; + char *k, *p; + int i, l, txid; + + ether->oerrs = ctlr->ntxerr; + ether->crcs = ctlr->nrxfcserr; + ether->frames = 0; + ether->buffs = ctlr->nrxdropnobuf; + ether->overflows = 0; + + // + // Offset must be zero or there's a possibility the + // new data won't match the previous read. + // + if(n == 0 || offset != 0) + return 0; + + p = malloc(READSTR); + l = 0; + + PRINTSTAT("Signal: %d\n", ctlr->signal-149); + PRINTSTAT("Noise: %d\n", ctlr->noise-149); + PRINTSTAT("SNR: %ud\n", ctlr->signal-ctlr->noise); + PRINTSTAT("Interrupts: %lud\n", ctlr->nints); + PRINTSTAT("Double Interrupts: %lud\n", ctlr->ndoubleint); + PRINTSTAT("TxPackets: %lud\n", ctlr->ntx); + PRINTSTAT("RxPackets: %lud\n", ctlr->nrx); + PRINTSTAT("TxErrors: %lud\n", ctlr->ntxerr); + PRINTSTAT("RxErrors: %lud\n", ctlr->nrxerr); + PRINTSTAT("TxRequests: %lud\n", ctlr->ntxrq); + PRINTSTAT("AllocEvs: %lud\n", ctlr->nalloc); + PRINTSTAT("InfoEvs: %lud\n", ctlr->ninfo); + PRINTSTAT("InfoDrop: %lud\n", ctlr->nidrop); + PRINTSTAT("WatchDogs: %lud\n", ctlr->nwatchdogs); + PRINTSTAT("Ticks: %ud\n", ctlr->ticks); + PRINTSTAT("TickIntr: %ud\n", ctlr->tickintr); + k = ((ctlr->state & Attached) ? "attached" : "not attached"); + PRINTSTAT("Card %s", k); + k = ((ctlr->state & Power) ? "on" : "off"); + PRINTSTAT(", power %s", k); + k = ((ctlr->txbusy)? ", txbusy" : ""); + PRINTSTAT("%s\n", k); + + if(ctlr->hascrypt){ + PRINTSTR("Keys: "); + for (i = 0; i < WNKeys; i++){ + if(ctlr->keys.keys[i].len == 0) + PRINTSTR("none "); + else if(SEEKEYS == 0) + PRINTSTR("set "); + else + PRINTSTAT("%s ", ctlr->keys.keys[i].dat); + } + PRINTSTR("\n"); + } + + // real card stats + ilock(ctlr); + PRINTSTR("\nCard stats: \n"); + PRINTSTAT("Status: %ux\n", csr_ins(ctlr, WR_Sts)); + PRINTSTAT("Event status: %ux\n", csr_ins(ctlr, WR_EvSts)); + i = ltv_ins(ctlr, WTyp_Ptype); + PRINTSTAT("Port type: %d\n", i); + PRINTSTAT("Transmit rate: %d\n", ltv_ins(ctlr, WTyp_TxRate)); + PRINTSTAT("Current Transmit rate: %d\n", + ltv_ins(ctlr, WTyp_CurTxRate)); + PRINTSTAT("Channel: %d\n", ltv_ins(ctlr, WTyp_Chan)); + PRINTSTAT("AP density: %d\n", ltv_ins(ctlr, WTyp_ApDens)); + PRINTSTAT("Promiscuous mode: %d\n", ltv_ins(ctlr, WTyp_Prom)); + if(i == WPTypeAdHoc) + PRINTSTAT("SSID name: %s\n", ltv_inname(ctlr, WTyp_NetName)); + else { + Wltv ltv; + PRINTSTAT("Current name: %s\n", ltv_inname(ctlr, WTyp_CurName)); + ltv.type = WTyp_BaseID; + ltv.len = 4; + if(w_inltv(ctlr, <v)) + print("#l%d: unable to read base station mac addr\n", ether->ctlrno); + l += snprint(p+l, READSTR-l, "Base station: %2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n", + ltv.addr[0], ltv.addr[1], ltv.addr[2], ltv.addr[3], ltv.addr[4], ltv.addr[5]); + } + PRINTSTAT("Net name: %s\n", ltv_inname(ctlr, WTyp_WantName)); + PRINTSTAT("Node name: %s\n", ltv_inname(ctlr, WTyp_NodeName)); + if(ltv_ins(ctlr, WTyp_HasCrypt) == 0) + PRINTSTR("WEP: not supported\n"); + else { + if(ltv_ins(ctlr, WTyp_Crypt) == 0) + PRINTSTR("WEP: disabled\n"); + else{ + PRINTSTR("WEP: enabled\n"); + k = ((ctlr->xclear)? "excluded": "included"); + PRINTSTAT("Clear packets: %s\n", k); + txid = ltv_ins(ctlr, WTyp_TxKey); + PRINTSTAT("Transmit key id: %d\n", txid); + } + } + iunlock(ctlr); + + PRINTSTAT("ntxuframes: %lud\n", ctlr->ntxuframes); + PRINTSTAT("ntxmframes: %lud\n", ctlr->ntxmframes); + PRINTSTAT("ntxfrags: %lud\n", ctlr->ntxfrags); + PRINTSTAT("ntxubytes: %lud\n", ctlr->ntxubytes); + PRINTSTAT("ntxmbytes: %lud\n", ctlr->ntxmbytes); + PRINTSTAT("ntxdeferred: %lud\n", ctlr->ntxdeferred); + PRINTSTAT("ntxsretries: %lud\n", ctlr->ntxsretries); + PRINTSTAT("ntxmultiretries: %lud\n", ctlr->ntxmultiretries); + PRINTSTAT("ntxretrylimit: %lud\n", ctlr->ntxretrylimit); + PRINTSTAT("ntxdiscards: %lud\n", ctlr->ntxdiscards); + PRINTSTAT("nrxuframes: %lud\n", ctlr->nrxuframes); + PRINTSTAT("nrxmframes: %lud\n", ctlr->nrxmframes); + PRINTSTAT("nrxfrags: %lud\n", ctlr->nrxfrags); + PRINTSTAT("nrxubytes: %lud\n", ctlr->nrxubytes); + PRINTSTAT("nrxmbytes: %lud\n", ctlr->nrxmbytes); + PRINTSTAT("nrxfcserr: %lud\n", ctlr->nrxfcserr); + PRINTSTAT("nrxdropnobuf: %lud\n", ctlr->nrxdropnobuf); + PRINTSTAT("nrxdropnosa: %lud\n", ctlr->nrxdropnosa); + PRINTSTAT("nrxcantdecrypt: %lud\n", ctlr->nrxcantdecrypt); + PRINTSTAT("nrxmsgfrag: %lud\n", ctlr->nrxmsgfrag); + PRINTSTAT("nrxmsgbadfrag: %lud\n", ctlr->nrxmsgbadfrag); + USED(l); + n = readstr(offset, a, n, p); + free(p); + return n; +} +#undef PRINTSTR +#undef PRINTSTAT + +static int +parsekey(WKey* key, char* a) +{ + int i, k, len, n; + char buf[WMaxKeyLen]; + + len = strlen(a); + if(len == WMinKeyLen || len == WMaxKeyLen){ + memset(key->dat, 0, sizeof(key->dat)); + memmove(key->dat, a, len); + key->len = len; + + return 0; + } + else if(len == WMinKeyLen*2 || len == WMaxKeyLen*2){ + k = 0; + for(i = 0; i < len; i++){ + if(*a >= '0' && *a <= '9') + n = *a++ - '0'; + else if(*a >= 'a' && *a <= 'f') + n = *a++ - 'a' + 10; + else if(*a >= 'A' && *a <= 'F') + n = *a++ - 'A' + 10; + else + return -1; + + if(i & 1){ + buf[k] |= n; + k++; + } + else + buf[k] = n<<4; + } + + memset(key->dat, 0, sizeof(key->dat)); + memmove(key->dat, buf, k); + key->len = k; + + return 0; + } + + return -1; +} + +int +w_option(Ctlr* ctlr, char* buf, long n) +{ + char *p; + int i, r; + Cmdbuf *cb; + + r = 0; + + cb = parsecmd(buf, n); + if(cb->nf < 2) + r = -1; + else if(cistrcmp(cb->f[0], "essid") == 0){ + if(cistrcmp(cb->f[1],"default") == 0) + p = ""; + else + p = cb->f[1]; + if(ctlr->ptype == WPTypeAdHoc){ + memset(ctlr->netname, 0, sizeof(ctlr->netname)); + strncpy(ctlr->netname, p, WNameLen); + } + else{ + memset(ctlr->wantname, 0, sizeof(ctlr->wantname)); + strncpy(ctlr->wantname, p, WNameLen); + } + } + else if(cistrcmp(cb->f[0], "station") == 0){ + memset(ctlr->nodename, 0, sizeof(ctlr->nodename)); + strncpy(ctlr->nodename, cb->f[1], WNameLen); + } + else if(cistrcmp(cb->f[0], "channel") == 0){ + if((i = atoi(cb->f[1])) >= 1 && i <= 16) + ctlr->chan = i; + else + r = -1; + } + else if(cistrcmp(cb->f[0], "mode") == 0){ + if(cistrcmp(cb->f[1], "managed") == 0) + ctlr->ptype = WPTypeManaged; + else if(cistrcmp(cb->f[1], "wds") == 0) + ctlr->ptype = WPTypeWDS; + else if(cistrcmp(cb->f[1], "adhoc") == 0) + ctlr->ptype = WPTypeAdHoc; + else if((i = atoi(cb->f[1])) >= 0 && i <= 3) + ctlr->ptype = i; + else + r = -1; + } + else if(cistrcmp(cb->f[0], "ibss") == 0){ + if(cistrcmp(cb->f[1], "on") == 0) + ctlr->createibss = 1; + else + ctlr->createibss = 0; + } + else if(cistrcmp(cb->f[0], "crypt") == 0){ + if(cistrcmp(cb->f[1], "off") == 0) + ctlr->crypt = 0; + else if(cistrcmp(cb->f[1], "on") == 0 && ctlr->hascrypt) + ctlr->crypt = 1; + else + r = -1; + } + else if(cistrcmp(cb->f[0], "clear") == 0){ + if(cistrcmp(cb->f[1], "on") == 0) + ctlr->xclear = 0; + else if(cistrcmp(cb->f[1], "off") == 0 && ctlr->hascrypt) + ctlr->xclear = 1; + else + r = -1; + } + else if(cistrncmp(cb->f[0], "key", 3) == 0){ + if((i = atoi(cb->f[0]+3)) >= 1 && i <= WNKeys){ + ctlr->txkey = i-1; + if(parsekey(&ctlr->keys.keys[ctlr->txkey], cb->f[1])) + r = -1; + } + else + r = -1; + } + else if(cistrcmp(cb->f[0], "txkey") == 0){ + if((i = atoi(cb->f[1])) >= 1 && i <= WNKeys) + ctlr->txkey = i-1; + else + r = -1; + } + else if(cistrcmp(cb->f[0], "pm") == 0){ + if(cistrcmp(cb->f[1], "off") == 0) + ctlr->pmena = 0; + else if(cistrcmp(cb->f[1], "on") == 0){ + ctlr->pmena = 1; + if(cb->nf == 3){ + i = atoi(cb->f[2]); + // check range here? what are the units? + ctlr->pmwait = i; + } + } + else + r = -1; + } + else + r = -2; + free(cb); + + return r; +} + +long +w_ctl(Ether* ether, void* buf, long n) +{ + Ctlr *ctlr; + + if((ctlr = ether->ctlr) == nil) + error(Enonexist); + if((ctlr->state & Attached) == 0) + error(Eshutdown); + + ilock(ctlr); + if(w_option(ctlr, buf, n)){ + iunlock(ctlr); + error(Ebadctl); + } + if(ctlr->txbusy) + w_txdone(ctlr, WTxErrEv); + w_enable(ether); + w_txstart(ether); + iunlock(ctlr); + + return n; +} + +void +w_transmit(Ether* ether) +{ + Ctlr* ctlr = ether->ctlr; + + if(ctlr == 0) + return; + + ilock(ctlr); + ctlr->ntxrq++; + w_txstart(ether); + iunlock(ctlr); +} + +void +w_promiscuous(void* arg, int on) +{ + Ether* ether = (Ether*)arg; + Ctlr* ctlr = ether->ctlr; + + if(ctlr == nil) + error("card not found"); + if((ctlr->state & Attached) == 0) + error("card not attached"); + ilock(ctlr); + ltv_outs(ctlr, WTyp_Prom, (on?1:0)); + iunlock(ctlr); +} + +void +w_interrupt(Ureg* ,void* arg) +{ + Ether* ether = (Ether*) arg; + Ctlr* ctlr = (Ctlr*) ether->ctlr; + + if(ctlr == 0) + return; + ilock(ctlr); + ctlr->nints++; + w_intr(ether); + iunlock(ctlr); +} + +int +wavelanreset(Ether* ether, Ctlr *ctlr) +{ + Wltv ltv; + + iprint("wavelanreset, iob 0x%ux\n", ctlr->iob); + w_intdis(ctlr); + if(w_cmd(ctlr,WCmdIni,0)){ + iprint("#l%d: init failed\n", ether->ctlrno); + return -1; + } + w_intdis(ctlr); + ltv_outs(ctlr, WTyp_Tick, 8); + + ctlr->chan = 0; + ctlr->ptype = WDfltPType; + ctlr->txkey = 0; + ctlr->createibss = 0; + ctlr->keys.len = sizeof(WKey)*WNKeys/2 + 1; + ctlr->keys.type = WTyp_Keys; + if(ctlr->hascrypt = ltv_ins(ctlr, WTyp_HasCrypt)) + ctlr->crypt = 1; + *ctlr->netname = *ctlr->wantname = 0; + strcpy(ctlr->nodename, "Plan 9 STA"); + + ctlr->netname[WNameLen-1] = 0; + ctlr->wantname[WNameLen-1] = 0; + ctlr->nodename[WNameLen-1] =0; + + ltv.type = WTyp_Mac; + ltv.len = 4; + if(w_inltv(ctlr, <v)){ + iprint("#l%d: unable to read mac addr\n", + ether->ctlrno); + return -1; + } + memmove(ether->ea, ltv.addr, Eaddrlen); + + if(ctlr->chan == 0) + ctlr->chan = ltv_ins(ctlr, WTyp_Chan); + ctlr->apdensity = WDfltApDens; + ctlr->rtsthres = WDfltRtsThres; + ctlr->txrate = WDfltTxRate; + ctlr->maxlen = WMaxLen; + ctlr->pmena = 0; + ctlr->pmwait = 100; + ctlr->signal = 1; + ctlr->noise = 1; + ctlr->state |= Power; + + // free old Ctlr struct if resetting after suspend + if(ether->ctlr && ether->ctlr != ctlr) + free(ether->ctlr); + + // link to ether + ether->ctlr = ctlr; + ether->mbps = 10; + ether->attach = w_attach; + ether->detach = w_detach; + ether->interrupt = w_interrupt; + ether->transmit = w_transmit; + ether->ifstat = w_ifstat; + ether->ctl = w_ctl; + ether->power = w_power; + ether->promiscuous = w_promiscuous; + ether->multicast = w_multicast; + ether->scanbs = w_scanbs; + ether->arg = ether; + + DEBUG("#l%d: irq %d port %lx type %s", + ether->ctlrno, ether->irq, ether->port, ether->type); + DEBUG(" %2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux\n", + ether->ea[0], ether->ea[1], ether->ea[2], + ether->ea[3], ether->ea[4], ether->ea[5]); + + return 0; +} + +char* wavenames[] = { + "WaveLAN/IEEE", + "TrueMobile 1150", + "Instant Wireless ; Network PC CARD", + "Instant Wireless Network PC Card", + "Avaya Wireless PC Card", + "AirLancer MC-11", + "INTERSIL;HFA384x/IEEE;Version 01.02;", + nil, +}; |