yystopf
/
riscv-lab
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix(dcache): 修复读数据时data的索引错误

This commit is contained in:
Liphen 2023-12-28 18:39:43 +08:00
parent 6f5df6895e
commit fa41d30146
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
chisel/playground/src/cache/DCache.scala vendored
View File

@ -82,7 +82,9 @@ class DCache(cacheConfig: CacheConfig)(implicit config: CpuConfig) extends Modul
// | | | bank index | bank offset |
// ==========================================================
val exe_index = io.cpu.exe_addr(indexWidth + offsetWidth - 1, offsetWidth)
// exe级的index，用于访问第i行的数据
val exe_index = io.cpu.exe_addr(indexWidth + offsetWidth - 1, offsetWidth)
// mem级的bank的index，用于访问第i个bank的数据
val bank_index = io.cpu.addr(bankIndexWidth + bankOffsetWidth - 1, bankOffsetWidth)
// // 一个bank行内存了一个数据，所以bank_offset恒为0
@ -159,7 +161,7 @@ class DCache(cacheConfig: CacheConfig)(implicit config: CpuConfig) extends Modul
val saved_rdata = RegInit(0.U(XLEN.W))
io.cpu.rdata := Mux(state === s_wait, saved_rdata, data(replace_index)(select_way))
io.cpu.rdata := Mux(state === s_wait, saved_rdata, data(bank_index)(select_way))
// bank tagv ram
for { i <- 0 until nway } {