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

diplomacy: add a new UNCACHEABLE RegionType

Browse Source
This commit is contained in:
Wesley W. Terpstra 2017-07-12 16:19:19 -07:00
parent c8a7648169
commit b363a94480
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/main/scala/diplomacy/Parameters.scala
View File

@ -6,13 +6,18 @@ import Chisel._
/** Options for memory regions */
object RegionType {
sealed trait T
// Define the 'more relaxed than' ordering
val cases = Seq(CACHED, TRACKED, UNCACHED, UNCACHEABLE, PUT_EFFECTS, GET_EFFECTS)
sealed trait T extends Ordered[T] {
def compare(that: T): Int = cases.indexOf(that) compare cases.indexOf(this)
}
case object CACHED extends T
case object TRACKED extends T
case object UNCACHED extends T
case object PUT_EFFECTS extends T
case object UNCACHED extends T // not cached yet, but could be
case object UNCACHEABLE extends T // may spontaneously change contents
case object PUT_EFFECTS extends T // PUT_EFFECTS => UNCACHEABLE
case object GET_EFFECTS extends T // GET_EFFECTS => PUT_EFFECTS
val cases = Seq(CACHED, TRACKED, UNCACHED, PUT_EFFECTS, GET_EFFECTS)
}
// A non-empty half-open range; [start, end)