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openpic: fix remaining issues from idr-to-destmask conversion 

openpic_update_irq() was checking idr rather than destmask, treating
it as if it were a simple bitmap of cpus.  Changed to use destmask.

IPI delivery was removing bits directly from .idr, without calling
write_IRQreg_idr so that the change could be conveyed to destmask.
Changed to use destmask directly.

Save/restore destmask when serializing, as due to the IPI change it
cannot be reproduced from idr.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
master
Scott Wood 2013-01-21 15:53:51 +00:00 committed by Alexander Graf
parent 1ea1ce8ac3
commit f40c360c0d
1 changed files with 7 additions and 6 deletions
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13
hw/openpic.c
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@ -436,13 +436,13 @@ static void openpic_update_irq(OpenPICState *opp, int n_IRQ)
src->ivpr &= ~IVPR_ACTIVITY_MASK;
}
if (src->idr == 0) {
if (src->destmask == 0) {
/* No target */
DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ);
return;
}
if (src->idr == (1 << src->last_cpu)) {
if (src->destmask == (1 << src->last_cpu)) {
/* Only one CPU is allowed to receive this IRQ */
IRQ_local_pipe(opp, src->last_cpu, n_IRQ, active, was_active);
} else if (!(src->ivpr & IVPR_MODE_MASK)) {
@ -1000,8 +1000,7 @@ static void openpic_cpu_write_internal(void *opaque, hwaddr addr,
case 0x70:
idx = (addr - 0x40) >> 4;
/* we use IDE as mask which CPUs to deliver the IPI to still. */
write_IRQreg_idr(opp, opp->irq_ipi0 + idx,
opp->src[opp->irq_ipi0 + idx].idr | val);
opp->src[opp->irq_ipi0 + idx].destmask |= val;
openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
break;
@ -1101,8 +1100,8 @@ static uint32_t openpic_iack(OpenPICState *opp, IRQDest *dst, int cpu)
}
if ((irq >= opp->irq_ipi0) && (irq < (opp->irq_ipi0 + MAX_IPI))) {
src->idr &= ~(1 << cpu);
if (src->idr && !src->level) {
src->destmask &= ~(1 << cpu);
if (src->destmask && !src->level) {
/* trigger on CPUs that didn't know about it yet */
openpic_set_irq(opp, irq, 1);
openpic_set_irq(opp, irq, 0);
@ -1307,6 +1306,7 @@ static void openpic_save(QEMUFile* f, void *opaque)
for (i = 0; i < opp->max_irq; i++) {
qemu_put_be32s(f, &opp->src[i].ivpr);
qemu_put_be32s(f, &opp->src[i].idr);
qemu_get_be32s(f, &opp->src[i].destmask);
qemu_put_sbe32s(f, &opp->src[i].last_cpu);
qemu_put_sbe32s(f, &opp->src[i].pending);
}
@ -1372,6 +1372,7 @@ static int openpic_load(QEMUFile* f, void *opaque, int version_id)
qemu_get_be32s(f, &opp->src[i].ivpr);
qemu_get_be32s(f, &opp->src[i].idr);
qemu_get_be32s(f, &opp->src[i].destmask);
qemu_get_sbe32s(f, &opp->src[i].last_cpu);
qemu_get_sbe32s(f, &opp->src[i].pending);
}