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Minor cleanup:

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- Set 'pirq_cold' to '0' on the first PIRQ allocation.
- Make assertions stronger.

Reviewed by:	jhb
CR:		https://phabric.freebsd.org/D592
This commit is contained in:
Neel Natu 2014-08-13 00:14:26 +00:00
parent a0a67cf0c8
commit 33424543f2
1 changed files with 6 additions and 9 deletions
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15
usr.sbin/bhyve/pci_irq.c
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@ -115,7 +115,7 @@ void
pci_irq_reserve(int irq)
{
assert(irq < nitems(irq_counts));
assert(irq >= 0 && irq < nitems(irq_counts));
assert(pirq_cold);
assert(irq_counts[irq] == 0 || irq_counts[irq] == IRQ_DISABLED);
irq_counts[irq] = IRQ_DISABLED;
@ -125,10 +125,10 @@ void
pci_irq_use(int irq)
{
assert(irq < nitems(irq_counts));
assert(irq >= 0 && irq < nitems(irq_counts));
assert(pirq_cold);
if (irq_counts[irq] != IRQ_DISABLED)
irq_counts[irq]++;
assert(irq_counts[irq] != IRQ_DISABLED);
irq_counts[irq]++;
}
void
@ -197,7 +197,7 @@ pirq_alloc_pin(struct vmctx *ctx)
{
int best_count, best_irq, best_pin, irq, pin;
pirq_cold = 1;
pirq_cold = 0;
/* First, find the least-used PIRQ pin. */
best_pin = 0;
@ -222,7 +222,7 @@ pirq_alloc_pin(struct vmctx *ctx)
best_count = irq_counts[irq];
}
}
assert(best_irq != 0);
assert(best_irq >= 0);
irq_counts[best_irq]++;
pirqs[best_pin].reg = best_irq;
vm_isa_set_irq_trigger(ctx, best_irq, LEVEL_TRIGGER);
@ -234,9 +234,6 @@ pirq_alloc_pin(struct vmctx *ctx)
int
pirq_irq(int pin)
{
if (pin == -1)
return (255);
assert(pin > 0 && pin <= nitems(pirqs));
return (pirqs[pin - 1].reg & PIRQ_IRQ);
}