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增加tlbl1的d位检查

This commit is contained in:
Liphen 2024-01-15 17:29:35 +08:00
parent e37a05f5db
commit 3490a3005a
1 changed files with 11 additions and 6 deletions
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13
chisel/playground/src/cache/mmu/Tlb.scala vendored
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@ -262,7 +262,7 @@ class Tlb extends Module with HasTlbConst with HasCSRConst {
} }
// --------------------------------------------------- // ---------------------------------------------------
// ----------------- 指令虚实地址转换 ----------------- // ----------------- 数据虚实地址转换 -----------------
// --------------------------------------------------- // ---------------------------------------------------
switch(dmmu_state) { switch(dmmu_state) {
is(search_l1) { is(search_l1) {
@ -299,6 +299,10 @@ class Tlb extends Module with HasTlbConst with HasCSRConst {
} }
} }
is(AccessType.store) { is(AccessType.store) {
when(!dtlb.flag.d) {
dpage_fault := true.B
dmmu_state := search_fault
}.otherwise {
when(!dtlb.flag.w) { when(!dtlb.flag.w) {
dpage_fault := true.B dpage_fault := true.B
dmmu_state := search_fault dmmu_state := search_fault
@ -307,15 +311,16 @@ class Tlb extends Module with HasTlbConst with HasCSRConst {
} }
} }
} }
}
}.otherwise { }.otherwise {
dmmu_state := search_l2 dmmu_state := search_l2
} }
} }
} }
is(search_l2) { is(search_l2) {
when(il2_hit_vec.asUInt.orR) { when(dl2_hit_vec.asUInt.orR) {
dmmu_state := search_l1 dmmu_state := search_l1
dtlb := tlbl2(PriorityEncoder(il2_hit_vec)) dtlb := tlbl2(PriorityEncoder(dl2_hit_vec))
}.otherwise { }.otherwise {
req_ptw(1) := true.B req_ptw(1) := true.B
when(!ar_sel && io.dcache.ptw.vpn.ready) { when(!ar_sel && io.dcache.ptw.vpn.ready) {
@ -336,7 +341,7 @@ class Tlb extends Module with HasTlbConst with HasCSRConst {
}.otherwise { }.otherwise {
// 在内存中找寻到了页表，将其写入TLB // 在内存中找寻到了页表，将其写入TLB
val replace_entry = Wire(tlbBundle) val replace_entry = Wire(tlbBundle)
replace_entry.vpn := ivpn replace_entry.vpn := dvpn
replace_entry.asid := satp.asid replace_entry.asid := satp.asid
replace_entry.flag := io.dcache.ptw.pte.bits.entry.flag replace_entry.flag := io.dcache.ptw.pte.bits.entry.flag
replace_entry.ppn := io.dcache.ptw.pte.bits.entry.ppn replace_entry.ppn := io.dcache.ptw.pte.bits.entry.ppn