c

vexiiriscv.execute.lsu

LsuCachelessPlugin

class LsuCachelessPlugin extends FiberPlugin with DBusAccessService with LsuCachelessBusProvider

Implements an LSU without any cache. The tricky thing about this implementation, is the withSpeculativeLoadFlush parameter, which allows the plugin to speculatively emit non-io memory load to the memory system, even if the load result may be trashed away.

The plugin does support MMU aswell as atomic instruction. This allows to run linux without data cache :D. This is usefull from a verification perspective.

To get good timings on FPGA in a SoC, consider setting : - forkAt = 1 - joinAt = 2

This allows the memory bus CMD to have very relaxed timings by avoiding the XLEN bits adder aswell as the PMA data path. The down side is that the memory bus respons data path timings are stressed, but as this only impact the data path (no control path), it seems to be generaly better.

Linear Supertypes
LsuCachelessBusProvider, DBusAccessService, FiberPlugin, Hostable, Area, OverridedEqualsHashCode, ValCallbackRec, ValCallback, NameableByComponent, Nameable, ContextUser, ScalaLocated, GlobalDataUser, OwnableRef, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. LsuCachelessPlugin
  2. LsuCachelessBusProvider
  3. DBusAccessService
  4. FiberPlugin
  5. Hostable
  6. Area
  7. OverridedEqualsHashCode
  8. ValCallbackRec
  9. ValCallback
  10. NameableByComponent
  11. Nameable
  12. ContextUser
  13. ScalaLocated
  14. GlobalDataUser
  15. OwnableRef
  16. AnyRef
  17. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new LsuCachelessPlugin(layer: LaneLayer, withAmo: Boolean, withSpeculativeLoadFlush: Boolean, translationStorageParameter: Any, translationPortParameter: Any, pmpPortParameter: Any, addressAt: Int = 0, triggerAt: Int = 0, pmaAt: Int = 0, forkAt: Int = 0, joinAt: Int = 1, wbAt: Int = 2)

Type Members

  1. abstract type RefOwnerType
    Definition Classes
    OwnableRef

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. val FENCE: NamedType[Bool]
  5. val WITH_ACCESS: NamedType[Bool]
  6. val WITH_RSP: NamedType[Bool]
  7. val _context: Capture
    Definition Classes
    Area
  8. def accessRefillCount: Int
    Definition Classes
    LsuCachelessPlugin → DBusAccessService
  9. val accessRetainer: Retainer
    Definition Classes
    DBusAccessService
  10. def accessWake: Bits
    Definition Classes
    LsuCachelessPlugin → DBusAccessService
  11. def addService[T](that: T): T
    Definition Classes
    FiberPlugin
  12. var addressAt: Int
  13. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  14. def awaitBuild(): Unit
    Definition Classes
    FiberPlugin
  15. def bufferSize: Int
  16. def buildBefore(l: ⇒ Lock): Unit
    Definition Classes
    FiberPlugin
  17. var buildCount: Int
    Definition Classes
    FiberPlugin
  18. def busParam: LsuCachelessBusParam
  19. def childNamePriority: Byte
    Definition Classes
    Area
  20. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @IntrinsicCandidate()
  21. def component: Component
    Definition Classes
    ContextUser
  22. val dbusAccesses: ArrayBuffer[DBusAccess]
    Definition Classes
    DBusAccessService
  23. def during: AnyRef { ... /* 2 definitions in type refinement */ }
    Definition Classes
    FiberPlugin
  24. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. def equals(obj: Any): Boolean
    Definition Classes
    OverridedEqualsHashCode → AnyRef → Any
  26. def foreachReflectableNameables(doThat: (Any) ⇒ Unit): Unit
    Definition Classes
    Nameable
  27. var forkAt: Int
  28. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  29. def getDisplayName(): String
    Definition Classes
    Nameable
  30. def getInstanceCounter: Int
    Definition Classes
    ContextUser
  31. def getLsuCachelessBus(): LsuCachelessBus
    Definition Classes
    LsuCachelessPlugin → LsuCachelessBusProvider
  32. def getMode: Byte
    Attributes
    protected
    Definition Classes
    Nameable
  33. def getName(default: String): String
    Definition Classes
    NameableByComponent → Nameable
  34. def getName(): String
    Definition Classes
    NameableByComponent → Nameable
  35. def getPartialName(): String
    Definition Classes
    Nameable
  36. def getPath(from: Component, to: Component): Seq[Component]
    Definition Classes
    NameableByComponent
  37. def getRefOwnersChain(): List[Any]
    Definition Classes
    OwnableRef
  38. def getScalaLocationLong: String
    Definition Classes
    ScalaLocated
  39. def getScalaLocationShort: String
    Definition Classes
    ScalaLocated
  40. def getScalaTrace(): Throwable
    Definition Classes
    ScalaLocated
  41. val globalData: GlobalData
    Definition Classes
    GlobalDataUser
  42. def hashCode(): Int
    Definition Classes
    OverridedEqualsHashCode → AnyRef → Any
  43. var host: PluginHost
    Definition Classes
    FiberPlugin
  44. val hostLock: Lock
    Definition Classes
    FiberPlugin
  45. def isCompletelyUnnamed: Boolean
    Definition Classes
    Nameable
  46. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  47. final def isNamed: Boolean
    Definition Classes
    Nameable
  48. def isPriorityApplicable(namePriority: Byte): Boolean
    Definition Classes
    Nameable
  49. def isUnnamed: Boolean
    Definition Classes
    NameableByComponent → Nameable
  50. var joinAt: Int
  51. var layer: LaneLayer
  52. val lockables: LinkedHashSet[() ⇒ Lock]
    Definition Classes
    FiberPlugin
  53. val logic: Handle[Area { ... /* 35 definitions in type refinement */ }]
  54. val name: String
    Definition Classes
    Nameable
  55. val nameableRef: Nameable
    Attributes
    protected
    Definition Classes
    Nameable
    Annotations
    @DontName()
  56. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  57. def newDBusAccess(): DBusAccess
    Definition Classes
    DBusAccessService
  58. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  59. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  60. def overrideLocalName(name: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  61. val parentScope: ScopeStatement
    Definition Classes
    ContextUser
  62. var pluginEnabled: Boolean
    Definition Classes
    FiberPlugin
  63. var pmaAt: Int
  64. val pmaBuilder: Handle[PmaLogic]
  65. var pmpPortParameter: Any
  66. val refOwner: RefOwnerType
    Definition Classes
    OwnableRef
    Annotations
    @DontName()
  67. def reflectNames(): Unit
    Definition Classes
    Nameable
  68. val regions: Handle[ArrayBuffer[PmaRegion]]
  69. def retains(head: Any, tail: Any*): RetainerGroup
    Definition Classes
    FiberPlugin
  70. def retains(that: Seq[Any]): RetainerGroup
    Definition Classes
    FiberPlugin
  71. def rework[T](body: ⇒ T): T
    Definition Classes
    Area
  72. val scalaTrace: Throwable
    Definition Classes
    ScalaLocated
  73. def setCompositeName(nameable: Nameable, postfix: String, namePriority: Byte): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  74. def setCompositeName(nameable: Nameable, postfix: String, weak: Boolean): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  75. def setCompositeName(nameable: Nameable, postfix: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  76. def setCompositeName(nameable: Nameable, namePriority: Byte): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  77. def setCompositeName(nameable: Nameable, weak: Boolean): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  78. def setCompositeName(nameable: Nameable): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  79. def setHost(h: PluginHost): Unit
    Definition Classes
    FiberPlugin → Hostable
  80. def setLambdaName(isNameBody: ⇒ Boolean)(nameGen: ⇒ String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  81. def setName(name: String, namePriority: Byte): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  82. def setName(name: String, weak: Boolean): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  83. def setName(name: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  84. def setNameAsWeak(): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  85. def setPartialName(name: String, namePriority: Byte, owner: Any): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  86. def setPartialName(name: String, namePriority: Byte): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  87. def setPartialName(name: String, weak: Boolean): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  88. def setPartialName(owner: Nameable, name: String, namePriority: Byte): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  89. def setPartialName(owner: Nameable, name: String, weak: Boolean): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  90. def setPartialName(name: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  91. def setPartialName(owner: Nameable, name: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  92. def setPartialName(owner: Nameable): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  93. def setRefOwner(that: Any): Unit
    Definition Classes
    OwnableRef
  94. def setScalaLocated(source: ScalaLocated): LsuCachelessPlugin.this.type
    Definition Classes
    ScalaLocated
  95. def setWeakName(name: String): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  96. def setupRetain(l: ⇒ Lock): Unit
    Definition Classes
    FiberPlugin
  97. val subservices: ArrayBuffer[Any]
    Definition Classes
    FiberPlugin
  98. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  99. def toString(): String
    Definition Classes
    Area → Nameable → AnyRef → Any
  100. var translationPortParameter: Any
  101. var translationStorageParameter: Any
  102. var triggerAt: Int
  103. def unsetName(): LsuCachelessPlugin.this.type
    Definition Classes
    Nameable
  104. def valCallback[T](ref: T, name: String): T
    Definition Classes
    ValCallbackRec → ValCallback
  105. def valCallbackOn(ref: Any, name: String, refs: Set[Any]): Unit
    Definition Classes
    ValCallbackRec
  106. def valCallbackRec(obj: Any, name: String): Unit
    Definition Classes
    Area → ValCallbackRec
  107. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  108. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  109. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  110. var wbAt: Int
  111. var withAmo: Boolean
  112. def withPrefix(prefix: String): FiberPlugin
    Definition Classes
    FiberPlugin
  113. var withSpeculativeLoadFlush: Boolean

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated

Inherited from LsuCachelessBusProvider

Inherited from DBusAccessService

Inherited from FiberPlugin

Inherited from Hostable

Inherited from Area

Inherited from OverridedEqualsHashCode

Inherited from ValCallbackRec

Inherited from ValCallback

Inherited from NameableByComponent

Inherited from Nameable

Inherited from ContextUser

Inherited from ScalaLocated

Inherited from GlobalDataUser

Inherited from OwnableRef

Inherited from AnyRef

Inherited from Any

Ungrouped