riscv/rocket-chip
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fix icache ram depth; new chisel

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This commit is contained in:
Andrew Waterman 2012-02-26 17:51:46 -08:00
parent f3bb02b2ea
commit ad713a5d83
1 changed files with 4 additions and 4 deletions
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8
rocket/src/main/scala/icache.scala
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@ -94,15 +94,15 @@ class rocketICache(sets: Int, assoc: Int) extends Component {
for (i <- 0 until assoc) for (i <- 0 until assoc)
{ {
val repl_me = (repl_way === UFix(i)) val repl_me = (repl_way === UFix(i))
val tag_array = Mem(lines){ Bits(width=tagmsb-taglsb+1) } val tag_array = Mem(sets){ r_cpu_miss_tag }
tag_array.setReadLatency(1); tag_array.setReadLatency(1);
tag_array.setTarget('inst); tag_array.setTarget('inst);
val tag_rdata = tag_array.rw(tag_addr, r_cpu_miss_tag, tag_we && repl_me); val tag_rdata = tag_array.rw(tag_addr, r_cpu_miss_tag, tag_we && repl_me);
// valid bit array // valid bit array
val vb_array = Reg(resetVal = Bits(0, lines)); val vb_array = Reg(resetVal = Bits(0, sets));
when (io.cpu.invalidate) { when (io.cpu.invalidate) {
vb_array := Bits(0,lines); vb_array := Bits(0,sets);
} }
.elsewhen (tag_we && repl_me) { .elsewhen (tag_we && repl_me) {
vb_array := vb_array.bitSet(r_cpu_req_idx(indexmsb,indexlsb).toUFix, UFix(1,1)); vb_array := vb_array.bitSet(r_cpu_req_idx(indexmsb,indexlsb).toUFix, UFix(1,1));
@ -112,7 +112,7 @@ class rocketICache(sets: Int, assoc: Int) extends Component {
val hit = valid && (tag_rdata === r_cpu_hit_addr(tagmsb,taglsb)) val hit = valid && (tag_rdata === r_cpu_hit_addr(tagmsb,taglsb))
// data array // data array
val data_array = Mem(lines*REFILL_CYCLES){ Bits(width = MEM_DATA_BITS) } val data_array = Mem(sets*REFILL_CYCLES){ io.mem.resp_data }
data_array.setReadLatency(1); data_array.setReadLatency(1);
data_array.setTarget('inst); data_array.setTarget('inst);
val data_out = data_array.rw(data_addr, io.mem.resp_data, io.mem.resp_val && repl_me) val data_out = data_array.rw(data_addr, io.mem.resp_data, io.mem.resp_val && repl_me)