1999/0423/alphapc/devfloppy.c (diff list | history)

1999/0415/sys/src/9/alphapc/devfloppy.c:118,127 – 1999/0423/sys/src/9/alphapc/devfloppy.c:118,125 (short | long | prev | next)
1999/0415		static void fldump(void) { mb(); DPRINT("sra %ux srb %ux dor %ux msr %ux dir %ux\n", inb(Psra), inb(Psrb), inb(Pdor), inb(Pmsr), inb(Pdir)); mb(); } /*
1999/0415/sys/src/9/alphapc/devfloppy.c:146,153 – 1999/0423/sys/src/9/alphapc/devfloppy.c:144,149
1999/0415		FDrive *dp; FType *t; ulong maxtsize;                  dmainit(DMAchan); floppysetup0(&fl);
1999/0415/sys/src/9/alphapc/devfloppy.c:163,168 – 1999/0423/sys/src/9/alphapc/devfloppy.c:159,166
1999/0415		maxtsize = t->tsize; }
1999/0423		dmainit(DMAchan, maxtsize);
1999/0415		/* * allocate the drive storage */
1999/0415/sys/src/9/alphapc/devfloppy.c:174,182 – 1999/0423/sys/src/9/alphapc/devfloppy.c:172,178
1999/0415		*/ fl.motor = 0; delay(10); mb(); outb(Pdor, fl.motor | Fintena | Fena); mb(); delay(10); /*
1999/0415/sys/src/9/alphapc/devfloppy.c:267,275 – 1999/0423/sys/src/9/alphapc/devfloppy.c:263,269
1999/0415		/* * if floppy has changed or first time through */ mb(); if((inb(Pdir)&Fchange) || dp->vers == 0){ mb(); DPRINT("changed\n"); fldump(); dp->vers++;
1999/0415/sys/src/9/alphapc/devfloppy.c:276,289 – 1999/0423/sys/src/9/alphapc/devfloppy.c:270,277
1999/0415		floppysetdef(dp); start = dp->t; dp->confused = 1; /* make floppyon recal */ DPRINT("b4 floppyon:\n"); fldump(); floppyon(dp); DPRINT("after floppyon:\n"); fldump(); floppyseek(dp, dp->t->heads*dp->t->tsize); DPRINT("after floppyseek:\n"); fldump(); while(waserror()){ while(++dp->t){ if(dp->t == &floppytype[nelem(floppytype)])
1999/0415/sys/src/9/alphapc/devfloppy.c:486,494 – 1999/0423/sys/src/9/alphapc/devfloppy.c:474,480
1999/0415		/* start motor and select drive */ alreadyon = fl.motor & MOTORBIT(dp->dev); fl.motor |= MOTORBIT(dp->dev); mb(); outb(Pdor, fl.motor | Fintena | Fena | dp->dev); mb(); if(!alreadyon){ /* wait for drive to spin up */ tsleep(&dp->r, return0, 0, 750);
1999/0415/sys/src/9/alphapc/devfloppy.c:500,508 – 1999/0423/sys/src/9/alphapc/devfloppy.c:486,492
1999/0415		/* set transfer rate */ if(fl.rate != dp->t->rate){ fl.rate = dp->t->rate; mb(); outb(Pdsr, fl.rate); mb(); } /* get drive to a known cylinder */
1999/0415/sys/src/9/alphapc/devfloppy.c:521,529 – 1999/0423/sys/src/9/alphapc/devfloppy.c:505,511
1999/0415		floppyoff(FDrive *dp) { fl.motor &= ~MOTORBIT(dp->dev); mb(); outb(Pdor, fl.motor | Fintena | Fena | dp->dev); mb(); } /*
1999/0415/sys/src/9/alphapc/devfloppy.c:538,547 – 1999/0423/sys/src/9/alphapc/devfloppy.c:520,527
1999/0415		fl.nstat = 0; for(i = 0; i < fl.ncmd; i++){ for(tries = 0; ; tries++){ mb(); if((inb(Pmsr)&(Ffrom|Fready)) == Fready) break; mb(); if(tries > 1000){ DPRINT("cmd %ux can't be sent (%d)\n", fl.cmd[0], i); fldump();
1999/0415/sys/src/9/alphapc/devfloppy.c:552,560 – 1999/0423/sys/src/9/alphapc/devfloppy.c:532,538
1999/0415		} microdelay(8); /* for machine independence */ } mb(); outb(Pfdata, fl.cmd[i]); mb(); } return 0; }
1999/0415/sys/src/9/alphapc/devfloppy.c:576,584 – 1999/0423/sys/src/9/alphapc/devfloppy.c:554,560
1999/0415		for(i = 0; i < sizeof(fl.stat); i++){ /* wait for status byte */ for(tries = 0; ; tries++){ mb(); s = inb(Pmsr)&(Ffrom|Fready); mb(); if(s == Fready){ fl.nstat = i; return fl.nstat;
1999/0415/sys/src/9/alphapc/devfloppy.c:593,602 – 1999/0423/sys/src/9/alphapc/devfloppy.c:569,575
1999/0415		} microdelay(8); /* for machine independence */ } mb(); fl.stat[i] = inb(Pfdata); mb(); // print("stat[%d]: %.2ux\n", i, fl.stat[i]); } fl.nstat = sizeof(fl.stat); return fl.nstat;
1999/0415/sys/src/9/alphapc/devfloppy.c:686,694 – 1999/0423/sys/src/9/alphapc/devfloppy.c:659,665
1999/0415		return -1; floppywait(); if(fl.nstat < 2){ mb(); DPRINT("recalibrate: confused %ux\n", inb(Pmsr)); mb(); fl.confused = 1; return -1; }
1999/0415/sys/src/9/alphapc/devfloppy.c:729,741 – 1999/0423/sys/src/9/alphapc/devfloppy.c:700,708
1999/0415		splhi(); fl.ncmd = 1; fl.cmd[0] = 0; mb(); outb(Pdor, 0); mb(); delay(10); mb(); outb(Pdor, Fintena|Fena); mb(); delay(10); spllo(); fl.motor = 0;
1999/0415/sys/src/9/alphapc/devfloppy.c:747,755 – 1999/0423/sys/src/9/alphapc/devfloppy.c:714,720
1999/0415		dp->confused = 1; /* set rate to a known value */ mb(); outb(Pdsr, 0); mb(); fl.rate = 0; DPRINT("floppyrevive out\n");