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Ensure interrupts are off while in {d,i}tlb_va_to_pa_sun4u().

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I think this is necessary in order to make sure the workarounds
in {d,i}tlb_get_data_sun4u() work correctly.
This commit is contained in:
marius 2008-09-04 19:41:54 +00:00
parent 3063f54411
commit f8a9831413
1 changed files with 10 additions and 2 deletions
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12
sys/boot/sparc64/loader/main.c
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@ -396,36 +396,44 @@ itlb_get_data_sun4u(int slot)
static vm_offset_t
dtlb_va_to_pa_sun4u(vm_offset_t va)
{
u_long reg;
u_long pstate, reg;
int i;
pstate = rdpr(pstate);
wrpr(pstate, pstate & ~PSTATE_IE, 0);
for (i = 0; i < dtlb_slot_max; i++) {
reg = ldxa(TLB_DAR_SLOT(i), ASI_DTLB_TAG_READ_REG);
if (TLB_TAR_VA(reg) != va)
continue;
reg = dtlb_get_data_sun4u(i);
wrpr(pstate, pstate, 0);
if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
return ((reg & TD_PA_CH_MASK) >> TD_PA_SHIFT);
return ((reg & TD_PA_SF_MASK) >> TD_PA_SHIFT);
}
wrpr(pstate, pstate, 0);
return (-1);
}
static vm_offset_t
itlb_va_to_pa_sun4u(vm_offset_t va)
{
u_long reg;
u_long pstate, reg;
int i;
pstate = rdpr(pstate);
wrpr(pstate, pstate & ~PSTATE_IE, 0);
for (i = 0; i < itlb_slot_max; i++) {
reg = ldxa(TLB_DAR_SLOT(i), ASI_ITLB_TAG_READ_REG);
if (TLB_TAR_VA(reg) != va)
continue;
reg = itlb_get_data_sun4u(i);
wrpr(pstate, pstate, 0);
if (cpu_impl >= CPU_IMPL_ULTRASPARCIII)
return ((reg & TD_PA_CH_MASK) >> TD_PA_SHIFT);
return ((reg & TD_PA_SF_MASK) >> TD_PA_SHIFT);
}
wrpr(pstate, pstate, 0);
return (-1);
}