2000/0401/alphapc/arch164.c (diff list | history)

1999/0511/sys/src/9/alphapc/arch164.c:164,263 – 2000/0401/sys/src/9/alphapc/arch164.c:164,189 (short | long | prev | next)
1999/0415		return kmapio(0x88, addr, len); } /* * interrupts -- adapted from PC, needs work. */                  static Lock irqctllock; static Irqctl *irqctl[256]; static char irqmask[3];                  static void intr164(Ureg *ur)
2000/0401		static int intrenable164(Vctl *v)
1999/0415		{ int i, v; Irqctl *ctl; Irq *irq; Mach *mach;
2000/0401		int vec, irq;
1999/0415		v = (ulong)ur->a1>>4; if (v < 0x80) { iprint("unknown device intr v %d\n", v); return;
2000/0401		irq = v->irq; if(irq > MaxIrqPIC) { print("intrenable: irq %d out of range\n", v->irq); return -1;
1999/0415		} v -= 0x80; if(v < 256 && (ctl = irqctl[v])){ if(ctl->isintr){ m->intr++; if(ctl->isr) ctl->isr(v); /* if(v >= VectorPIC && v <= MaxVectorPIC) m->lastintr = v-VectorPIC; */ }                  for(irq = ctl->irq; irq; irq = irq->next) irq->f(ur, irq->a);                  if(ctl->eoi) ctl->eoi(v);
2000/0401		if(BUSTYPE(v->tbdf) == BusPCI) { vec = irq+VectorPCI; cserve(52, irq);
1999/0415		} else if(v >= VectorPIC && v <= MaxVectorPIC){ /* * An unknown interrupt. * Check for a default IRQ7. This can happen when * the IRQ input goes away before the acknowledge. * In this case, a 'default IRQ7' is generated, but * the corresponding bit in the ISR isn't set. * In fact, just ignore all such interrupts. */ iprint("cpu%d: spurious interrupt %d, last %d", m->machno, v-VectorPIC, 0 /*m->lastintr*/); for(i = 0; i < 32; i++){ if(!(active.machs & (1<<i))) continue; mach = MACHP(i); if(m->machno == mach->machno) continue; iprint(": cpu%d: last %d", mach->machno, 0 /*mach->lastintr*/); } iprint("\n"); /* m->spuriousintr++; */ return; } else{ dumpregs(ur); panic("unknown intr: %d\n", v); /* */ } }                  static int intrenable164(int v, void (*f)(Ureg*, void*), void*a, int tbdf) { Irq * irq; Irqctl *ctl;                  lock(&irqctllock); if(irqctl[v] == 0){ ctl = xalloc(sizeof(Irqctl)); /* this is all wrong; FIXME! */ if(BUSTYPE(tbdf) == BusPCI) cserve(52, v-VectorPCI); else if(v >= VectorPIC && i8259enable(v, tbdf, ctl) == -1){ unlock(&irqctllock); iprint("intrenable: didn't find v %d, tbdf 0x%uX\n", v, tbdf); xfree(ctl);
2000/0401		else { vec = irq+VectorPIC; if(i8259enable(irq, v->tbdf, v) == -1)
1999/0415		return -1; } irqctl[v] = ctl; } ctl = irqctl[v]; irq = xalloc(sizeof(Irq)); irq->f = f; irq->a = a; irq->next = ctl->irq; ctl->irq = irq; unlock(&irqctllock); return 0;
2000/0401		return vec;
1999/0415		} /*
1999/0511/sys/src/9/alphapc/arch164.c:405,411 – 2000/0401/sys/src/9/alphapc/arch164.c:331,336
1999/0415		coredetach, pcicfg2117x, pcimem2117x, intr164, intrenable164, inb2117x,