struct tte *
tsb_tte_lookup(pmap_t pm, vm_offset_t va)
{
struct tte *bucket;
struct tte *tp;
u_long sz;
u_int i;
if (pm == kernel_pmap) {
PMAP_STATS_INC(tsb_nlookup_k);
tp = tsb_kvtotte(va);
if (tte_match(tp, va))
return (tp);
} else {
PMAP_LOCK_ASSERT(pm, MA_OWNED);
PMAP_STATS_INC(tsb_nlookup_u);
for (sz = TS_MIN; sz <= TS_MAX; sz++) {
bucket = tsb_vtobucket(pm, sz, va);
for (i = 0; i < TSB_BUCKET_SIZE; i++) {
tp = &bucket[i];
if (tte_match(tp, va))
return (tp);
}
}
}
return (NULL);
}
int
_kvm_kvatop(kvm_t *kd, u_long va, off_t *pa)
{
struct tte tte;
off_t tte_off;
u_long vpn;
off_t pa_off;
u_long pg_off;
int rest;
pg_off = va & PAGE_MASK;
if (va >= VM_MIN_DIRECT_ADDRESS)
pa_off = TLB_DIRECT_TO_PHYS(va) & ~PAGE_MASK;
else {
vpn = btop(va);
tte_off = kd->vmst->vm_tsb_off +
((vpn & kd->vmst->vm_tsb_mask) << TTE_SHIFT);
if (!_kvm_read_phys(kd, tte_off, &tte, sizeof(tte)))
goto invalid;
if (!tte_match(&tte, va))
goto invalid;
pa_off = TTE_GET_PA(&tte);
}
rest = PAGE_SIZE - pg_off;
pa_off = _kvm_find_off(kd->vmst, pa_off, rest);
if (pa_off == KVM_OFF_NOTFOUND)
goto invalid;
*pa = pa_off + pg_off;
return (rest);
invalid:
_kvm_err(kd, 0, "invalid address (%lx)", va);
return (0);
}
