ref: 556618eb07d1ac6e2c629a60acd53c45d53261be
dir: /sys/src/cmd/nusb/ether/smsc.c/
/* * SMSC LAN95XX */ #include <u.h> #include <libc.h> #include <thread.h> #include "usb.h" #include "dat.h" enum { Doburst = 1, Resettime = 1000, E2pbusytime = 1000, Afcdefault = 0xF830A1, Hsburst = 24, Fsburst = 129, Defbulkdly = 1000, Ethp8021q = 0x8100, MACoffset = 1, PHYinternal = 1, Rxerror = 0x8000, Txfirst = 0x2000, Txlast = 0x1000, /* USB vendor requests */ Writereg = 0xA0, Readreg = 0xA1, /* device registers */ Intsts = 0x08, Txcfg = 0x10, Txon = 1<<2, Hwcfg = 0x14, Bir = 1<<12, Rxdoff = 3<<9, Mef = 1<<5, Lrst = 1<<3, Bce = 1<<1, Pmctrl = 0x20, Phyrst = 1<<4, Ledgpio = 0x24, Ledspd = 1<<24, Ledlnk = 1<<20, Ledfdx = 1<<16, Afccfg = 0x2C, E2pcmd = 0x30, Busy = 1<<31, Timeout = 1<<10, Read = 0, E2pdata = 0x34, Burstcap = 0x38, Intepctl = 0x68, Phyint = 1<<15, Bulkdelay = 0x6C, Maccr = 0x100, Mcpas = 1<<19, Prms = 1<<18, Hpfilt = 1<<13, Txen = 1<<3, Rxen = 1<<2, Addrh = 0x104, Addrl = 0x108, Hashh = 0x10C, Hashl = 0x110, MIIaddr = 0x114, MIIwrite= 1<<1, MIIread = 0<<1, MIIbusy = 1<<0, MIIdata = 0x118, Flow = 0x11C, Vlan1 = 0x120, Coecr = 0x130, Txcoe = 1<<16, Rxcoemd = 1<<1, Rxcoe = 1<<0, /* MII registers */ Bmcr = 0, Bmcrreset= 1<<15, Speed100= 1<<13, Anenable= 1<<12, Anrestart= 1<<9, Fulldpx = 1<<8, Bmsr = 1, Advertise = 4, Adcsma = 0x0001, Ad10h = 0x0020, Ad10f = 0x0040, Ad100h = 0x0080, Ad100f = 0x0100, Adpause = 0x0400, Adpauseasym= 0x0800, Adall = Ad10h|Ad10f|Ad100h|Ad100f, Phyintsrc = 29, Phyintmask = 30, Anegcomp= 1<<6, Linkdown= 1<<4, }; static int wr(Dev *d, int reg, int val) { int ret; ret = usbcmd(d, Rh2d|Rvendor|Rdev, Writereg, 0, reg, (uchar*)&val, sizeof(val)); if(ret < 0) fprint(2, "%s: wr(%x, %x): %r", argv0, reg, val); return ret; } static int rr(Dev *d, int reg) { int ret, rval; ret = usbcmd(d, Rd2h|Rvendor|Rdev, Readreg, 0, reg, (uchar*)&rval, sizeof(rval)); if(ret < 0){ fprint(2, "%s: rr(%x): %r", argv0, reg); return 0; } return rval; } static int miird(Dev *d, int idx) { while(rr(d, MIIaddr) & MIIbusy) ; wr(d, MIIaddr, PHYinternal<<11 | idx<<6 | MIIread); while(rr(d, MIIaddr) & MIIbusy) ; return rr(d, MIIdata); } static void miiwr(Dev *d, int idx, int val) { while(rr(d, MIIaddr) & MIIbusy) ; wr(d, MIIdata, val); wr(d, MIIaddr, PHYinternal<<11 | idx<<6 | MIIwrite); while(rr(d, MIIaddr) & MIIbusy) ; } static int eepromr(Dev *d, int off, uchar *buf, int len) { int i, v; for(i = 0; i < E2pbusytime; i++) if((rr(d, E2pcmd) & Busy) == 0) break; if(i == E2pbusytime) return -1; for(i = 0; i < len; i++){ wr(d, E2pcmd, Busy|Read|(i+off)); while((v = rr(d, E2pcmd) & (Busy|Timeout)) == Busy) ; if(v & Timeout) return -1; buf[i] = rr(d, E2pdata); } return 0; } static void phyinit(Dev *d) { int i; miiwr(d, Bmcr, Bmcrreset|Anenable); for(i = 0; i < Resettime/10; i++){ if((miird(d, Bmcr) & Bmcrreset) == 0) break; sleep(10); } miiwr(d, Advertise, Adcsma|Adall|Adpause|Adpauseasym); // miiwr(d, Advertise, Adcsma|Ad10f|Ad10h|Adpause|Adpauseasym); miird(d, Phyintsrc); miiwr(d, Phyintmask, Anegcomp|Linkdown); miiwr(d, Bmcr, miird(d, Bmcr)|Anenable|Anrestart); } static int doreset(Dev *d, int reg, int bit) { int i; if(wr(d, reg, bit) < 0) return -1; for(i = 0; i < Resettime/10; i++){ if((rr(d, reg) & bit) == 0) return 1; sleep(10); } return 0; } static int smscreceive(Dev *ep) { Block *b; uint hd; int n; n = Doburst? Hsburst*512 : Maxpkt+4; b = allocb(n); if((n = read(ep->dfd, b->wp, n)) < 0){ freeb(b); return -1; } b->wp += n; while(BLEN(b) >= 4){ hd = GET4(b->rp); b->rp += 4; n = hd >> 16; if(n > BLEN(b)) break; if((hd & Rxerror) == 0){ if(n == BLEN(b)){ etheriq(b); return 0; } etheriq(copyblock(b, n)); } b->rp += (n + 3) & ~3; } freeb(b); return 0; } static void smsctransmit(Dev *ep, Block *b) { int n; n = BLEN(b); b->rp -= 8; PUT4(b->rp, n | Txfirst | Txlast); PUT4(b->rp+4, n); write(ep->dfd, b->rp, BLEN(b)); freeb(b); } static int smscpromiscuous(Dev *d, int on) { int rxctl; rxctl = rr(d, Maccr); if(on) rxctl |= Prms; else rxctl &= ~Prms; return wr(d, Maccr, rxctl); } static int smscmulticast(Dev *d, uchar *, int) { int rxctl; rxctl = rr(d, Maccr); if(nmulti != 0) rxctl |= Mcpas; else rxctl &= ~Mcpas; return wr(d, Maccr, rxctl); } int smscinit(Dev *d) { if(!doreset(d, Hwcfg, Lrst) || !doreset(d, Pmctrl, Phyrst)) return -1; if(!setmac) if(eepromr(d, MACoffset, macaddr, Eaddrlen) < 0) return -1; wr(d, Addrl, GET4(macaddr)); wr(d, Addrh, GET2(macaddr+4)); if(Doburst){ wr(d, Hwcfg, (rr(d,Hwcfg)&~Rxdoff)|Bir|Mef|Bce); wr(d, Burstcap, Hsburst); }else{ wr(d, Hwcfg, (rr(d,Hwcfg)&~(Rxdoff|Mef|Bce))|Bir); wr(d, Burstcap, 0); } wr(d, Bulkdelay, Defbulkdly); wr(d, Intsts, ~0); wr(d, Ledgpio, Ledspd|Ledlnk|Ledfdx); wr(d, Flow, 0); wr(d, Afccfg, Afcdefault); wr(d, Vlan1, Ethp8021q); wr(d, Coecr, rr(d,Coecr)&~(Txcoe|Rxcoe)); /* TODO could offload checksums? */ wr(d, Hashh, 0); wr(d, Hashl, 0); wr(d, Maccr, rr(d,Maccr)&~(Prms|Mcpas|Hpfilt)); phyinit(d); wr(d, Intepctl, rr(d, Intepctl)|Phyint); wr(d, Maccr, rr(d, Maccr)|Txen|Rxen); wr(d, Txcfg, Txon); eptransmit = smsctransmit; epreceive = smscreceive; eppromiscuous = smscpromiscuous; epmulticast = smscmulticast; return 0; }