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ppcmmu: Fix BAT update.

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Need to schedule flush of both BAT and PAT type TLBs because BAT takes precedence over PAT which means updating a BAT can invalidate a PAT.
This commit is contained in:
joevt 2023-08-24 23:53:03 -07:00 committed by Maxim Poliakovski
parent 6b40caf63a
commit 6b3cdad877
1 changed files with 22 additions and 7 deletions
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29
cpu/ppc/ppcmmu.cpp
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@ -857,6 +857,18 @@ void tlb_flush_pat_entries()
gTLBFlushPatEntries = false;
}
template <const TLBType tlb_type>
void tlb_flush_all_entries()
{
if (!gTLBFlushBatEntries && !gTLBFlushPatEntries)
return;
tlb_flush_entries<tlb_type>((TLBFlags)(TLBE_FROM_BAT | TLBE_FROM_PAT));
gTLBFlushBatEntries = false;
gTLBFlushPatEntries = false;
}
static void mpc601_bat_update(uint32_t bat_reg)
{
PPC_BAT_entry *ibat_entry, *dbat_entry;
@ -888,10 +900,11 @@ static void mpc601_bat_update(uint32_t bat_reg)
}
// MPC601 has unified BATs so we're going to flush both ITLB and DTLB
if (!gTLBFlushBatEntries) {
if (!gTLBFlushBatEntries || !gTLBFlushPatEntries) {
gTLBFlushBatEntries = true;
add_ctx_sync_action(&tlb_flush_bat_entries<TLBType::ITLB>);
add_ctx_sync_action(&tlb_flush_bat_entries<TLBType::DTLB>);
gTLBFlushPatEntries = true;
add_ctx_sync_action(&tlb_flush_all_entries<TLBType::ITLB>);
add_ctx_sync_action(&tlb_flush_all_entries<TLBType::DTLB>);
}
}
@ -913,9 +926,10 @@ static void ppc_ibat_update(uint32_t bat_reg)
bat_entry->phys_hi = ppc_state.spr[upper_reg_num + 1] & hi_mask;
bat_entry->bepi = ppc_state.spr[upper_reg_num] & hi_mask;
if (!gTLBFlushBatEntries) {
if (!gTLBFlushBatEntries || !gTLBFlushPatEntries) {
gTLBFlushBatEntries = true;
add_ctx_sync_action(&tlb_flush_bat_entries<TLBType::ITLB>);
gTLBFlushPatEntries = true;
add_ctx_sync_action(&tlb_flush_all_entries<TLBType::ITLB>);
}
}
@ -937,9 +951,10 @@ static void ppc_dbat_update(uint32_t bat_reg)
bat_entry->phys_hi = ppc_state.spr[upper_reg_num + 1] & hi_mask;
bat_entry->bepi = ppc_state.spr[upper_reg_num] & hi_mask;
if (!gTLBFlushBatEntries) {
if (!gTLBFlushBatEntries || !gTLBFlushPatEntries) {
gTLBFlushBatEntries = true;
add_ctx_sync_action(&tlb_flush_bat_entries<TLBType::DTLB>);
gTLBFlushPatEntries = true;
add_ctx_sync_action(&tlb_flush_all_entries<TLBType::DTLB>);
}
}