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Check AMO operation legality in TLB

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Andrew Waterman
2017-04-12 21:49:37 -07:00
committed by Andrew Waterman
parent 6359ff96e5
commit d203c4c654
4 changed files with 34 additions and 22 deletions
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5
src/main/scala/uncore/Consts.scala
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@ -4,6 +4,7 @@ package uncore
package constants
import Chisel._
import _root_.util._
object MemoryOpConstants extends MemoryOpConstants
trait MemoryOpConstants {
@ -31,7 +32,9 @@ trait MemoryOpConstants {
def M_CLEAN = UInt("b10011") // write back dirty data and retain R/W permissions
def M_SFENCE = UInt("b10100") // flush TLB
def isAMO(cmd: UInt) = cmd(3) || cmd === M_XA_SWAP
def isAMOLogical(cmd: UInt) = cmd.isOneOf(M_XA_SWAP, M_XA_XOR, M_XA_OR, M_XA_AND)
def isAMOArithmetic(cmd: UInt) = cmd.isOneOf(M_XA_ADD, M_XA_MIN, M_XA_MAX, M_XA_MINU, M_XA_MAXU)
def isAMO(cmd: UInt) = isAMOLogical(cmd) || isAMOArithmetic(cmd)
def isPrefetch(cmd: UInt) = cmd === M_PFR || cmd === M_PFW
def isRead(cmd: UInt) = cmd === M_XRD || cmd === M_XLR || cmd === M_XSC || isAMO(cmd)
def isWrite(cmd: UInt) = cmd === M_XWR || cmd === M_XSC || isAMO(cmd)