riscv/rocket-chip
1
0
Fork 0
Code Releases Activity

regression: fix bad regression that deadlocks SoC with illegal D stall

Browse Source
This commit is contained in:
Wesley W. Terpstra 2016-11-18 15:45:52 -08:00
parent 5f7fa3dae5
commit cd19bf65b8
1 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/main/scala/groundtest/Regression.scala
View File

@ -724,12 +724,15 @@ class RegressionTest(implicit p: Parameters) extends GroundTest()(p) {
val all_done = (regress_idx === UInt(regressions.size))
val start = Reg(init = Bool(true))
// Some tests randomly backpressure grant; make this safe:
val grant = Queue(io.mem.head.grant, 16)
// default output values
io.mem.head.acquire.valid := Bool(false)
io.mem.head.acquire.bits := GetBlock(
client_xact_id = UInt(0),
addr_block = UInt(0))
io.mem.head.grant.ready := Bool(false)
grant.ready := Bool(false)
io.cache.head.req.valid := Bool(false)
io.cache.head.req.bits.addr := UInt(0)
io.cache.head.req.bits.typ := UInt(log2Ceil(64 / 8))
@ -743,8 +746,8 @@ class RegressionTest(implicit p: Parameters) extends GroundTest()(p) {
val me = regress_idx === UInt(i)
regress.io.start := me && start
regress.io.mem.acquire.ready := io.mem.head.acquire.ready && me
regress.io.mem.grant.valid := io.mem.head.grant.valid && me
regress.io.mem.grant.bits := io.mem.head.grant.bits
regress.io.mem.grant.valid := grant.valid && me
regress.io.mem.grant.bits := grant.bits
regress.io.cache.req.ready := io.cache.head.req.ready && me
regress.io.cache.resp.valid := io.cache.head.resp.valid && me
regress.io.cache.resp.bits := io.cache.head.resp.bits
@ -752,7 +755,7 @@ class RegressionTest(implicit p: Parameters) extends GroundTest()(p) {
when (me) {
io.mem.head.acquire.valid := regress.io.mem.acquire.valid
io.mem.head.acquire.bits := regress.io.mem.acquire.bits
io.mem.head.grant.ready := regress.io.mem.grant.ready
grant.ready := regress.io.mem.grant.ready
io.cache.head.req.valid := regress.io.cache.req.valid
io.cache.head.req.bits := regress.io.cache.req.bits
io.cache.head.invalidate_lr := regress.io.cache.invalidate_lr
@ -779,11 +782,11 @@ class RegressionTest(implicit p: Parameters) extends GroundTest()(p) {
io.status.timeout.valid := timeout
io.status.timeout.bits := UInt(0)
assert(!(all_done && io.mem.head.grant.valid),
assert(!(all_done && grant.valid),
"Getting grant after test completion")
when (all_done) {
io.status.error.valid := io.mem.head.grant.valid
io.status.error.valid := grant.valid
io.status.error.bits := UInt(regressions.size)
}
}