static Chan* consopen(Chan *c, int omode) { c->aux = nil; c = devopen(c, omode, consdir, nelem(consdir), devgen); switch((ulong)c->qid.path){ case Qkprint: if(tas(&kprintinuse) != 0){ c->flag &= ~COPEN; error(Einuse); } if(kprintoq == nil){ kprintoq = qopen(8*1024, Qcoalesce, 0, 0); if(kprintoq == nil){ c->flag &= ~COPEN; error(Enomem); } qnoblock(kprintoq, 1); }else qreopen(kprintoq); c->iounit = qiomaxatomic; break; } return c; }
void printinit(void) { lineq = qopen(2*1024, 0, nil, nil); if(lineq == nil) panic("printinit"); qnoblock(lineq, 1); }
static Chan* consopen(Chan *c, int omode) { c->aux = 0; switch((ulong)c->qid.path){ case Qconsctl: if(!iseve()) error(Eperm); qlock(&kbd); kbd.ctl++; qunlock(&kbd); break; case Qkeyboard: if((omode & 3) != OWRITE) { qlock(&kbd); kbd.kbdr++; flushkbdline(kbdq); kbd.raw = 1; qunlock(&kbd); } break; case Qscancode: qlock(&kbd); if(kscanq || !kscanid) { qunlock(&kbd); c->flag &= ~COPEN; if(kscanq) error(Einuse); else error(Ebadarg); } kscanq = qopen(256, 0, nil, nil); qunlock(&kbd); break; case Qkprint: if((omode & 3) != OWRITE) { wlock(&kprintq); if(kprintq.q != nil){ wunlock(&kprintq); error(Einuse); } kprintq.q = qopen(32*1024, Qcoalesce, nil, nil); if(kprintq.q == nil){ wunlock(&kprintq); error(Enomem); } qnoblock(kprintq.q, 1); wunlock(&kprintq); c->iounit = qiomaxatomic; } break; } return devopen(c, omode, consdir, nelem(consdir), devgen); }
void printinit(void) { #if 0 lineq = qopen(2 * 1024, 0, NULL, NULL); if (lineq == NULL) panic("printinit"); qnoblock(lineq, 1); #endif }
void psauxlink(void) { psauxq = qopen(1024, 0, 0, 0); if(psauxq == nil) panic("psauxlink"); qnoblock(psauxq, 1); i8042auxenable(psauxputc); addarchfile("psaux", DMEXCL|0660, psauxread, psauxwrite); }
Chan* consopen(Chan *c, int omode) { c = devopen(c, omode, contab, nelem(contab), devgen); switch((ulong)c->qid.path) { case Qconsctl: incref(&kbd.ctl); break; case Qpointer: if(incref(&kbd.ptr) != 1){ decref(&kbd.ptr); c->flag &= ~COPEN; error(Einuse); } break; case Qscancode: qlock(&kbd.gq); if(gkscanq || !gkscanid) { qunlock(&kbd.q); c->flag &= ~COPEN; if(gkscanq) error(Einuse); else error(Ebadarg); } gkscanq = qopen(256, 0, nil, nil); qunlock(&kbd.gq); break; case Qkprint: wlock(&kprintq.l); if(kprintq.q != nil){ wunlock(&kprintq.l); c->flag &= ~COPEN; error(Einuse); } kprintq.q = qopen(32*1024, 0, 0, 0); if(kprintq.q == nil){ wunlock(&kprintq.l); c->flag &= ~COPEN; error(Enomem); } qnoblock(kprintq.q, 1); wunlock(&kprintq.l); break; case Qsnarf: if(omode == ORDWR) error(Eperm); if(omode == OREAD) c->aux = strdup(""); else c->aux = mallocz(SnarfSize, 1); break; } return c; }
} kbdputc(kbdq, c); } void kbdenable(void) { #ifdef notdef kbdq = qopen(4*1024, 0, 0, 0); if(kbdq == nil) panic("kbdinit");
void kbdenable(void) { if(kbdq == nil){ kbdq = qopen(4*1024, 0, 0, 0); if(kbdq == nil) panic("kbdinit"); qnoblock(kbdq, 1); } ioalloc(Data, 1, 0, "kbd"); ioalloc(Cmd, 1, 0, "kbd"); intrenable(IrqKBD, i8042intr, 0, BUSUNKNOWN, "kbd"); }
static Chan* consopen(Chan *c, int omode) { c = devopen(c, omode, contab, nelem(contab), devgen); switch((ulong)c->qid.path) { case Qconsctl: incref(&kbd.ctl); break; case Qscancode: qlock(&kbd.gq); if(gkscanq != nil || gkscanid == nil) { qunlock(&kbd.q); c->flag &= ~COPEN; if(gkscanq) error(Einuse); else error("not supported"); } gkscanq = qopen(256, 0, nil, nil); qunlock(&kbd.gq); break; case Qkprint: wlock(&kprintq.l); if(waserror()){ wunlock(&kprintq.l); c->flag &= ~COPEN; nexterror(); } if(kprintq.q != nil) error(Einuse); kprintq.q = qopen(32*1024, Qcoalesce, nil, nil); if(kprintq.q == nil) error(Enomem); qnoblock(kprintq.q, 1); poperror(); wunlock(&kprintq.l); c->iounit = qiomaxatomic; break; case Qevents: c->aux = qopen(512, 0, nil, nil); add_listener(&event_listeners, c->aux); break; } return c; }
void kbdinit(void) { int c; kbdq = qopen(4*1024, 0, 0, 0); if(kbdq == nil) panic("kbdinit"); qnoblock(kbdq, 1); ioalloc(Data, 1, 0, "kbd"); ioalloc(Cmd, 1, 0, "kbd"); intrenable(IrqKBD, i8042intr, 0, BUSUNKNOWN, "kbd"); /* wait for a quiescent controller */ while((c = inb(Status)) & (Outbusy | Inready)) if(c & Inready) inb(Data); /* get current controller command byte */ outb(Cmd, 0x20); if(inready() < 0){ print("kbdinit: can't read ccc\n"); ccc = 0; } else ccc = inb(Data); /* enable kbd xfers and interrupts */ /* disable mouse */ ccc &= ~Ckbddis; ccc |= Csf | Ckbdint | Cscs1; if(outready() < 0) print("kbd init failed\n"); outb(Cmd, 0x60); if(outready() < 0) print("kbd init failed\n"); outb(Data, ccc); outready(); }
int uartctl(Uart *p, char *cmd) { char *f[16]; int i, n, nf; nf = tokenize(cmd, f, nelem(f)); for(i = 0; i < nf; i++){ if(strncmp(f[i], "break", 5) == 0){ (*p->phys->dobreak)(p, 0); continue; } n = atoi(f[i]+1); switch(*f[i]){ case 'B': case 'b': uartdrainoutput(p); if((*p->phys->baud)(p, n) < 0) return -1; break; case 'C': case 'c': p->hup_dcd = n; break; case 'D': case 'd': uartdrainoutput(p); (*p->phys->dtr)(p, n); break; case 'E': case 'e': p->hup_dsr = n; break; case 'F': case 'f': if(p->oq != nil) qflush(p->oq); break; case 'H': case 'h': if(p->iq != nil) qhangup(p->iq, 0); if(p->oq != nil) qhangup(p->oq, 0); break; case 'I': case 'i': uartdrainoutput(p); (*p->phys->fifo)(p, n); break; case 'K': case 'k': uartdrainoutput(p); (*p->phys->dobreak)(p, n); break; case 'L': case 'l': uartdrainoutput(p); if((*p->phys->bits)(p, n) < 0) return -1; break; case 'M': case 'm': uartdrainoutput(p); (*p->phys->modemctl)(p, n); break; case 'N': case 'n': if(p->oq != nil) qnoblock(p->oq, n); break; case 'P': case 'p': uartdrainoutput(p); if((*p->phys->parity)(p, *(f[i]+1)) < 0) return -1; break; case 'Q': case 'q': if(p->iq != nil) qsetlimit(p->iq, n); if(p->oq != nil) qsetlimit(p->oq, n); break; case 'R': case 'r': uartdrainoutput(p); (*p->phys->rts)(p, n); break; case 'S': case 's': uartdrainoutput(p); if((*p->phys->stop)(p, n) < 0) return -1; break; case 'W': case 'w': if(uarttimer == nil || n < 1) return -1; uarttimer->tns = (int64_t)n * 100000LL; break; case 'X': case 'x': if(p->enabled){ ilock(&p->tlock); p->xonoff = n; iunlock(&p->tlock); } break; } } return 0; }
static void uartctl(Uart *p, char *cmd) { int i, n; /* let output drain for a while (up to 4 secs) */ for(i = 0; i < 200 && (qlen(p->oq) || (readstatus(p) & USTAT_TC) == 0); i++) tsleep(&up->sleep, return0, 0, 20); if(strncmp(cmd, "break", 5) == 0){ uartbreak(p, 0); return; } n = atoi(cmd+1); switch(*cmd){ case 'B': case 'b': if(n <= 0) error(Ebadarg); p->bps = n; uartset(p); break; case 'f': case 'F': qflush(p->oq); break; case 'H': case 'h': qhangup(p->iq, 0); qhangup(p->oq, 0); break; case 'L': case 'l': if(n < 7 || n > 8) error(Ebadarg); p->bits = n; uartset(p); break; case 'n': case 'N': qnoblock(p->oq, n); break; case 'P': case 'p': p->parity = *(cmd+1); uartset(p); break; case 'K': case 'k': uartbreak(p, n); break; case 'Q': case 'q': qsetlimit(p->iq, n); qsetlimit(p->oq, n); break; case 's': case 'S': if(n < 1 || n > 2) error(Ebadarg); p->stop = n; uartset(p); break; } }