2014-09-13 00:31:38 +02:00
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// See LICENSE for license details.
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2012-10-16 23:26:33 +02:00
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package uncore
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import Chisel._
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2014-11-12 02:36:55 +01:00
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import scala.math.max
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2012-10-16 23:26:33 +02:00
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2014-12-30 07:55:58 +01:00
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// Parameters exposed to the top-level design, set based on
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// external requirements or design space exploration
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//
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case object TLId extends Field[String] // Unique name per network
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2014-11-12 02:36:55 +01:00
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case object TLCoherence extends Field[CoherencePolicy]
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2014-08-08 21:21:57 +02:00
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case object TLAddrBits extends Field[Int]
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2014-12-30 07:55:58 +01:00
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case object TLManagerXactIdBits extends Field[Int]
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2014-08-08 21:21:57 +02:00
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case object TLClientXactIdBits extends Field[Int]
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case object TLDataBits extends Field[Int]
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2014-12-07 11:57:44 +01:00
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case object TLDataBeats extends Field[Int]
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2014-08-08 21:21:57 +02:00
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2014-11-12 02:36:55 +01:00
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abstract trait TileLinkParameters extends UsesParameters {
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val tlBlockAddrBits = params(TLAddrBits)
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val tlClientXactIdBits = params(TLClientXactIdBits)
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2014-12-30 07:55:58 +01:00
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val tlManagerXactIdBits = params(TLManagerXactIdBits)
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2014-11-12 02:36:55 +01:00
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val tlDataBits = params(TLDataBits)
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2014-12-07 11:57:44 +01:00
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val tlDataBeats = params(TLDataBeats)
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val tlWriteMaskBits = if(tlDataBits/8 < 1) 1 else tlDataBits/8
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val tlBeatAddrBits = log2Up(tlDataBeats)
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val tlByteAddrBits = log2Up(tlWriteMaskBits)
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val tlAtomicOpcodeBits = M_SZ
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val tlUncachedOperandSizeBits = MT_SZ
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val tlSubblockUnionBits = max(tlWriteMaskBits,
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2015-02-02 04:57:53 +01:00
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(tlByteAddrBits +
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tlUncachedOperandSizeBits +
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tlAtomicOpcodeBits)) + 1
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2014-12-07 12:02:20 +01:00
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val co = params(TLCoherence)
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val networkPreservesPointToPointOrdering = false //TODO: check physical network type
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2012-10-16 23:26:33 +02:00
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}
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2014-12-07 12:02:20 +01:00
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abstract class TLBundle extends Bundle with TileLinkParameters
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abstract class TLModule extends Module with TileLinkParameters
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2014-12-30 07:55:58 +01:00
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// Directionality of message channel
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// Used to hook up logical network ports to physical network ports
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trait TileLinkChannel extends TLBundle
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trait ClientToManagerChannel extends TileLinkChannel
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trait ManagerToClientChannel extends TileLinkChannel
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trait ClientToClientChannel extends TileLinkChannel // Unused for now
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// Common signals that are used in multiple channels.
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// These traits are useful for type parameterization.
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//
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trait HasCacheBlockAddress extends TLBundle {
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val addr_block = UInt(width = tlBlockAddrBits)
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}
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trait HasTileLinkBeatId extends TLBundle {
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val addr_beat = UInt(width = tlBeatAddrBits)
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}
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trait HasClientTransactionId extends TLBundle {
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val client_xact_id = Bits(width = tlClientXactIdBits)
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}
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trait HasManagerTransactionId extends TLBundle {
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val manager_xact_id = Bits(width = tlManagerXactIdBits)
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}
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abstract trait HasTileLinkData extends HasTileLinkBeatId {
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val data = UInt(width = tlDataBits)
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def hasData(dummy: Int = 0): Bool
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def hasMultibeatData(dummy: Int = 0): Bool
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}
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2014-12-30 07:55:58 +01:00
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// Actual TileLink channel bundle definitions
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2013-03-20 22:10:16 +01:00
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2014-12-30 07:55:58 +01:00
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class Acquire extends ClientToManagerChannel
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with HasCacheBlockAddress
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with HasClientTransactionId
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with HasTileLinkData {
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// Actual bundle fields
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val builtin_type = Bool()
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val a_type = UInt(width = max(log2Up(Acquire.nBuiltinAcquireTypes), co.acquireTypeWidth))
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val subblock = Bits(width = tlSubblockUnionBits)
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2015-02-02 10:02:06 +01:00
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// Utility funcs for accessing subblock union
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val opSizeOff = tlByteAddrBits + 1
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val opCodeOff = tlUncachedOperandSizeBits + opSizeOff
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val opMSB = tlAtomicOpcodeBits + opCodeOff
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def allocate(dummy: Int = 0) = subblock(0)
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def addr_byte(dummy: Int = 0) = subblock(opSizeOff-1, 1)
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def op_size(dummy: Int = 0) = subblock(opCodeOff-1, opSizeOff)
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def op_code(dummy: Int = 0) = subblock(opMSB-1, opCodeOff)
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def write_mask(dummy: Int = 0) = subblock(tlWriteMaskBits, 1)
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def addr(dummy: Int = 0) = Cat(addr_block, addr_beat, this.addr_byte(0))
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// Other helper funcs
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2014-11-13 01:25:25 +01:00
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def is(t: UInt) = a_type === t
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2015-02-02 10:02:06 +01:00
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def hasData(dummy: Int = 0): Bool = builtin_type && Acquire.typesWithData.contains(a_type)
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2015-02-02 10:02:06 +01:00
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def hasMultibeatData(dummy: Int = 0): Bool = Bool(tlDataBeats > 1) && builtin_type &&
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Acquire.typesWithMultibeatData.contains(a_type)
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//TODO: This function is a hack to support Rocket icache snooping Rocket nbdcache:
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def requiresSelfProbe(dummy: Int = 0) = builtin_type && Acquire.requiresSelfProbe(a_type)
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def makeProbe(meta: ManagerMetadata = co.managerMetadataOnFlush): Probe =
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Probe(co.getProbeType(this, meta), this.addr_block)
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def makeGrant(
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manager_xact_id: UInt,
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meta: ManagerMetadata = co.managerMetadataOnFlush,
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addr_beat: UInt = UInt(0),
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data: UInt = UInt(0)): Grant = {
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Grant(
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builtin_type = this.builtin_type,
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g_type = co.getGrantType(this, meta),
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client_xact_id = this.client_xact_id,
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manager_xact_id = manager_xact_id,
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addr_beat = addr_beat,
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data = data
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)
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}
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2014-11-12 02:36:55 +01:00
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}
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object Acquire {
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val nBuiltinAcquireTypes = 5
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//TODO: Use Enum
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def uncachedRead = UInt(0)
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def uncachedReadBlock = UInt(1)
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def uncachedWrite = UInt(2)
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def uncachedWriteBlock = UInt(3)
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def uncachedAtomic = UInt(4)
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def typesWithData = Vec(uncachedWrite, uncachedWriteBlock, uncachedAtomic)
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def typesWithMultibeatData = Vec(uncachedWriteBlock)
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def requiresOuterRead(a_type: UInt) = a_type != uncachedWriteBlock
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def requiresOuterWrite(a_type: UInt) = typesWithData.contains(a_type)
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//TODO: This function is a hack to support Rocket icache snooping Rocket nbdcache:
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def requiresSelfProbe(a_type: UInt) = a_type === uncachedReadBlock
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def fullWriteMask = SInt(-1, width = new Acquire().tlWriteMaskBits).toUInt
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// Most generic constructor
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def apply(
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builtin_type: Bool,
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a_type: Bits,
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client_xact_id: UInt,
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addr_block: UInt,
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addr_beat: UInt = UInt(0),
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data: UInt = UInt(0),
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subblock: UInt = UInt(0)): Acquire = {
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2013-01-22 02:17:26 +01:00
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val acq = new Acquire
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acq.builtin_type := builtin_type
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2013-01-22 02:17:26 +01:00
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acq.a_type := a_type
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acq.client_xact_id := client_xact_id
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acq.addr_block := addr_block
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acq.addr_beat := addr_beat
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2014-03-29 18:53:49 +01:00
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acq.data := data
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2014-12-12 10:11:08 +01:00
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acq.subblock := subblock
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2014-03-29 18:53:49 +01:00
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acq
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}
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// For cached types
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def apply(a_type: Bits, client_xact_id: UInt, addr_block: UInt): Acquire = {
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apply(
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builtin_type = Bool(false),
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a_type = a_type,
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client_xact_id = client_xact_id,
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addr_block = addr_block)
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2012-10-16 23:26:33 +02:00
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}
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2015-02-02 04:57:53 +01:00
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// Copy constructor
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2014-08-08 21:21:57 +02:00
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def apply(a: Acquire): Acquire = {
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2014-01-21 21:20:55 +01:00
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val acq = new Acquire
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acq := a
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acq
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}
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2012-10-16 23:26:33 +02:00
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}
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2014-03-29 18:53:49 +01:00
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2015-02-02 04:57:53 +01:00
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// Asks for a single TileLink beat of data
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2014-11-12 02:36:55 +01:00
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object UncachedRead {
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2015-02-02 04:57:53 +01:00
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def apply(
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client_xact_id: UInt,
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addr_block: UInt,
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addr_beat: UInt,
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alloc: Bool = Bool(true)): Acquire = {
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Acquire(
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builtin_type = Bool(true),
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2015-02-02 04:57:53 +01:00
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a_type = Acquire.uncachedRead,
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client_xact_id = client_xact_id,
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addr_block = addr_block,
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addr_beat = addr_beat,
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subblock = alloc)
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2014-11-12 02:36:55 +01:00
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}
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2015-02-02 04:57:53 +01:00
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}
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// Asks for an entire cache block of data
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object UncachedReadBlock {
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def apply(
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client_xact_id: UInt = UInt(0),
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addr_block: UInt,
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alloc: Bool = Bool(true)): Acquire = {
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Acquire(
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builtin_type = Bool(true),
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2015-02-02 04:57:53 +01:00
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a_type = Acquire.uncachedReadBlock,
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client_xact_id = client_xact_id,
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addr_block = addr_block,
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subblock = alloc.toUInt)
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2014-11-12 02:36:55 +01:00
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}
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2013-08-02 23:55:06 +02:00
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}
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2012-10-16 23:26:33 +02:00
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2014-11-12 02:36:55 +01:00
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object UncachedWrite {
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2015-02-02 04:57:53 +01:00
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def apply(
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client_xact_id: UInt,
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addr_block: UInt,
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addr_beat: UInt,
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data: UInt,
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write_mask: UInt = Acquire.fullWriteMask,
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alloc: Bool = Bool(true)): Acquire = {
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Acquire(
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2015-02-02 10:02:06 +01:00
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builtin_type = Bool(true),
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2015-02-02 04:57:53 +01:00
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a_type = Acquire.uncachedWrite,
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addr_block = addr_block,
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addr_beat = addr_beat,
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client_xact_id = client_xact_id,
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data = data,
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subblock = Cat(write_mask, alloc))
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2014-11-12 02:36:55 +01:00
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}
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2015-02-02 04:57:53 +01:00
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}
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// For full block of data
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object UncachedWriteBlock {
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def apply(
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client_xact_id: UInt,
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addr_block: UInt,
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addr_beat: UInt,
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data: UInt,
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alloc: Bool = Bool(true)): Acquire = {
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Acquire(
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2015-02-02 10:02:06 +01:00
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builtin_type = Bool(true),
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2015-02-02 04:57:53 +01:00
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a_type = Acquire.uncachedWriteBlock,
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client_xact_id = client_xact_id,
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addr_block = addr_block,
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addr_beat = addr_beat,
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data = data,
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subblock = Cat(Acquire.fullWriteMask, alloc))
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2014-11-12 02:36:55 +01:00
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}
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}
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object UncachedAtomic {
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2015-02-02 04:57:53 +01:00
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def apply(
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client_xact_id: UInt,
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addr_block: UInt,
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addr_beat: UInt,
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addr_byte: UInt,
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atomic_opcode: UInt,
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operand_size: UInt,
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data: UInt): Acquire = {
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Acquire(
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2015-02-02 10:02:06 +01:00
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builtin_type = Bool(true),
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2015-02-02 04:57:53 +01:00
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a_type = Acquire.uncachedAtomic,
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client_xact_id = client_xact_id,
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addr_block = addr_block,
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addr_beat = addr_beat,
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data = data,
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subblock = Cat(atomic_opcode, operand_size, addr_byte, Bool(true)))
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2014-11-12 02:36:55 +01:00
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}
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}
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2014-11-05 23:21:38 +01:00
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2014-12-30 07:55:58 +01:00
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class Probe extends ManagerToClientChannel
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with HasCacheBlockAddress {
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2014-12-30 07:55:58 +01:00
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val p_type = UInt(width = co.probeTypeWidth)
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2014-12-30 07:55:58 +01:00
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def is(t: UInt) = p_type === t
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2015-02-02 04:57:53 +01:00
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def makeRelease(
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client_xact_id: UInt,
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meta: ClientMetadata = co.clientMetadataOnFlush,
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addr_beat: UInt = UInt(0),
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data: UInt = UInt(0)): Release = {
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Release(
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voluntary = Bool(false),
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r_type = co.getReleaseType(this, meta),
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client_xact_id = client_xact_id,
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addr_block = this.addr_block,
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addr_beat = addr_beat,
|
|
|
|
data = data)
|
|
|
|
}
|
2014-12-30 07:55:58 +01:00
|
|
|
}
|
|
|
|
|
2014-11-05 23:21:38 +01:00
|
|
|
object Probe {
|
2015-02-02 04:57:53 +01:00
|
|
|
val co = new Probe().co
|
|
|
|
def apply(p_type: UInt, addr_block: UInt) = {
|
2014-01-21 21:20:55 +01:00
|
|
|
val prb = new Probe
|
|
|
|
prb.p_type := p_type
|
2015-02-02 04:57:53 +01:00
|
|
|
prb.addr_block := addr_block
|
2014-01-21 21:20:55 +01:00
|
|
|
prb
|
|
|
|
}
|
2015-02-02 04:57:53 +01:00
|
|
|
|
|
|
|
def onVoluntaryWriteback(meta: ManagerMetadata, addr_block: UInt): Probe = {
|
|
|
|
apply(co.getProbeType(M_FLUSH, meta), addr_block)
|
|
|
|
}
|
2014-01-21 21:20:55 +01:00
|
|
|
}
|
2014-03-29 18:53:49 +01:00
|
|
|
|
2015-02-02 04:57:53 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
class Release extends ClientToManagerChannel
|
2015-02-02 04:57:53 +01:00
|
|
|
with HasCacheBlockAddress
|
2014-12-30 07:55:58 +01:00
|
|
|
with HasClientTransactionId
|
|
|
|
with HasTileLinkData {
|
|
|
|
val r_type = UInt(width = co.releaseTypeWidth)
|
2015-02-02 04:57:53 +01:00
|
|
|
val voluntary = Bool()
|
|
|
|
|
|
|
|
// Helper funcs
|
2014-12-30 07:55:58 +01:00
|
|
|
def is(t: UInt) = r_type === t
|
2015-02-02 04:57:53 +01:00
|
|
|
def hasData(dummy: Int = 0) = co.releaseTypesWithData.contains(r_type)
|
2015-02-02 10:02:06 +01:00
|
|
|
//TODO: Assumes all releases write back full cache blocks:
|
2015-02-02 04:57:53 +01:00
|
|
|
def hasMultibeatData(dummy: Int = 0) = Bool(tlDataBeats > 1) && co.releaseTypesWithData.contains(r_type)
|
|
|
|
def isVoluntary(dummy: Int = 0) = voluntary
|
|
|
|
def requiresAck(dummy: Int = 0) = !Bool(networkPreservesPointToPointOrdering)
|
|
|
|
|
|
|
|
def makeGrant(
|
|
|
|
manager_xact_id: UInt,
|
|
|
|
meta: ManagerMetadata = co.managerMetadataOnFlush): Grant = {
|
|
|
|
Grant(
|
|
|
|
g_type = Grant.voluntaryAck,
|
2015-02-02 10:02:06 +01:00
|
|
|
builtin_type = Bool(true), // Grant.voluntaryAck is built-in type
|
2015-02-02 04:57:53 +01:00
|
|
|
client_xact_id = this.client_xact_id,
|
|
|
|
manager_xact_id = manager_xact_id
|
|
|
|
)
|
|
|
|
}
|
2012-10-16 23:26:33 +02:00
|
|
|
}
|
|
|
|
|
2014-11-05 23:21:38 +01:00
|
|
|
object Release {
|
2015-02-02 04:57:53 +01:00
|
|
|
val co = new Release().co
|
|
|
|
def apply(
|
|
|
|
voluntary: Bool,
|
|
|
|
r_type: UInt,
|
|
|
|
client_xact_id: UInt,
|
|
|
|
addr_block: UInt,
|
|
|
|
addr_beat: UInt = UInt(0),
|
|
|
|
data: UInt = UInt(0)): Release = {
|
2014-01-21 21:20:55 +01:00
|
|
|
val rel = new Release
|
|
|
|
rel.r_type := r_type
|
2014-11-05 23:21:38 +01:00
|
|
|
rel.client_xact_id := client_xact_id
|
2015-02-02 04:57:53 +01:00
|
|
|
rel.addr_block := addr_block
|
|
|
|
rel.addr_beat := addr_beat
|
2014-03-29 18:53:49 +01:00
|
|
|
rel.data := data
|
2015-02-02 04:57:53 +01:00
|
|
|
rel.voluntary := voluntary
|
2014-01-21 21:20:55 +01:00
|
|
|
rel
|
|
|
|
}
|
2015-02-02 04:57:53 +01:00
|
|
|
|
|
|
|
def makeVoluntaryWriteback(
|
|
|
|
meta: ClientMetadata,
|
|
|
|
client_xact_id: UInt,
|
|
|
|
addr_block: UInt,
|
|
|
|
addr_beat: UInt = UInt(0),
|
|
|
|
data: UInt = UInt(0)): Release = {
|
|
|
|
Release(
|
|
|
|
voluntary = Bool(true),
|
|
|
|
r_type = co.getReleaseType(M_FLUSH, meta),
|
|
|
|
client_xact_id = client_xact_id,
|
|
|
|
addr_block = addr_block,
|
|
|
|
addr_beat = addr_beat,
|
|
|
|
data = data)
|
2013-01-29 01:39:45 +01:00
|
|
|
}
|
|
|
|
}
|
2014-03-29 18:53:49 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
class Grant extends ManagerToClientChannel
|
2014-11-12 02:36:55 +01:00
|
|
|
with HasTileLinkData
|
|
|
|
with HasClientTransactionId
|
2014-12-30 07:55:58 +01:00
|
|
|
with HasManagerTransactionId {
|
2015-02-02 10:02:06 +01:00
|
|
|
val builtin_type = Bool()
|
2015-02-02 04:57:53 +01:00
|
|
|
val g_type = UInt(width = max(log2Up(Grant.nBuiltinGrantTypes), co.grantTypeWidth))
|
|
|
|
|
|
|
|
// Helper funcs
|
2014-11-13 01:25:25 +01:00
|
|
|
def is(t: UInt) = g_type === t
|
2015-02-02 10:02:06 +01:00
|
|
|
def hasData(dummy: Int = 0): Bool = Mux(builtin_type,
|
2015-02-02 04:57:53 +01:00
|
|
|
Grant.typesWithData.contains(g_type),
|
|
|
|
co.grantTypesWithData.contains(g_type))
|
|
|
|
def hasMultibeatData(dummy: Int = 0): Bool =
|
2015-02-02 10:02:06 +01:00
|
|
|
Bool(tlDataBeats > 1) && Mux(builtin_type,
|
2015-02-02 04:57:53 +01:00
|
|
|
Grant.typesWithMultibeatData.contains(g_type),
|
|
|
|
co.grantTypesWithData.contains(g_type))
|
2015-02-02 10:02:06 +01:00
|
|
|
def isVoluntary(dummy: Int = 0): Bool = builtin_type && (g_type === Grant.voluntaryAck)
|
2015-02-02 04:57:53 +01:00
|
|
|
def requiresAck(dummy: Int = 0): Bool = !Bool(networkPreservesPointToPointOrdering) && !isVoluntary()
|
|
|
|
def makeFinish(dummy: Int = 0): Finish = {
|
|
|
|
val f = new Finish
|
|
|
|
f.manager_xact_id := this.manager_xact_id
|
|
|
|
f
|
|
|
|
}
|
2014-11-12 02:36:55 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
object Grant {
|
2015-02-02 04:57:53 +01:00
|
|
|
val nBuiltinGrantTypes = 5
|
|
|
|
//TODO Use Enum
|
|
|
|
def voluntaryAck = UInt(0)
|
|
|
|
def uncachedRead = UInt(1)
|
|
|
|
def uncachedReadBlock = UInt(2)
|
|
|
|
def uncachedWrite = UInt(3)
|
|
|
|
def uncachedAtomic = UInt(4)
|
|
|
|
def typesWithData = Vec(uncachedRead, uncachedReadBlock, uncachedAtomic)
|
|
|
|
def typesWithMultibeatData= Vec(uncachedReadBlock)
|
|
|
|
|
|
|
|
def apply(
|
2015-02-02 10:02:06 +01:00
|
|
|
builtin_type: Bool,
|
2015-02-02 04:57:53 +01:00
|
|
|
g_type: UInt,
|
|
|
|
client_xact_id: UInt,
|
|
|
|
manager_xact_id: UInt,
|
|
|
|
addr_beat: UInt = UInt(0),
|
|
|
|
data: UInt = UInt(0)): Grant = {
|
2014-03-29 18:53:49 +01:00
|
|
|
val gnt = new Grant
|
2015-02-02 10:02:06 +01:00
|
|
|
gnt.builtin_type := builtin_type
|
2014-03-29 18:53:49 +01:00
|
|
|
gnt.g_type := g_type
|
|
|
|
gnt.client_xact_id := client_xact_id
|
2014-12-30 07:55:58 +01:00
|
|
|
gnt.manager_xact_id := manager_xact_id
|
2015-02-02 04:57:53 +01:00
|
|
|
gnt.addr_beat := addr_beat
|
2014-03-29 18:53:49 +01:00
|
|
|
gnt.data := data
|
|
|
|
gnt
|
|
|
|
}
|
2015-02-02 04:57:53 +01:00
|
|
|
|
|
|
|
def getGrantTypeForUncached(a: Acquire): UInt = {
|
|
|
|
MuxLookup(a.a_type, Grant.uncachedRead, Array(
|
|
|
|
Acquire.uncachedRead -> Grant.uncachedRead,
|
|
|
|
Acquire.uncachedReadBlock -> Grant.uncachedReadBlock,
|
|
|
|
Acquire.uncachedWrite -> Grant.uncachedWrite,
|
|
|
|
Acquire.uncachedWriteBlock -> Grant.uncachedWrite,
|
|
|
|
Acquire.uncachedAtomic -> Grant.uncachedAtomic
|
|
|
|
))
|
2014-11-12 02:36:55 +01:00
|
|
|
}
|
2012-10-16 23:26:33 +02:00
|
|
|
}
|
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
class Finish extends ClientToManagerChannel with HasManagerTransactionId
|
2012-10-16 23:26:33 +02:00
|
|
|
|
2013-01-22 02:17:26 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
// Complete IO definitions for two types of TileLink clients
|
2014-10-03 01:47:35 +02:00
|
|
|
class UncachedTileLinkIO extends Bundle {
|
2014-03-29 18:53:49 +01:00
|
|
|
val acquire = new DecoupledIO(new LogicalNetworkIO(new Acquire))
|
2014-01-21 21:20:55 +01:00
|
|
|
val grant = new DecoupledIO(new LogicalNetworkIO(new Grant)).flip
|
2014-04-27 00:17:05 +02:00
|
|
|
val finish = new DecoupledIO(new LogicalNetworkIO(new Finish))
|
2013-03-20 22:10:16 +01:00
|
|
|
}
|
|
|
|
|
2014-10-03 01:47:35 +02:00
|
|
|
class TileLinkIO extends UncachedTileLinkIO {
|
2014-01-21 21:20:55 +01:00
|
|
|
val probe = new DecoupledIO(new LogicalNetworkIO(new Probe)).flip
|
2014-03-29 18:53:49 +01:00
|
|
|
val release = new DecoupledIO(new LogicalNetworkIO(new Release))
|
2012-10-16 23:26:33 +02:00
|
|
|
}
|
2013-03-20 22:10:16 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
// Converts UncachedTileLinkIO to regular TileLinkIO by pinning
|
|
|
|
// probe.ready and release.valid low
|
2014-12-12 21:07:04 +01:00
|
|
|
class TileLinkIOWrapper extends TLModule {
|
|
|
|
val io = new Bundle {
|
|
|
|
val in = new UncachedTileLinkIO().flip
|
|
|
|
val out = new TileLinkIO
|
|
|
|
}
|
|
|
|
io.out.acquire <> io.in.acquire
|
|
|
|
io.out.grant <> io.in.grant
|
|
|
|
io.out.finish <> io.in.finish
|
|
|
|
io.out.probe.ready := Bool(false)
|
|
|
|
io.out.release.valid := Bool(false)
|
|
|
|
}
|
|
|
|
object TileLinkIOWrapper {
|
2015-02-02 10:02:06 +01:00
|
|
|
def apply[T <: Data](utl: UncachedTileLinkIO) = {
|
2014-12-12 21:07:04 +01:00
|
|
|
val conv = Module(new TileLinkIOWrapper)
|
2015-02-02 10:02:06 +01:00
|
|
|
conv.io.in <> utl
|
2014-12-12 21:07:04 +01:00
|
|
|
conv.io.out
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-02-02 04:57:53 +01:00
|
|
|
abstract trait HasArbiterTypes {
|
|
|
|
val arbN: Int
|
2014-12-30 07:55:58 +01:00
|
|
|
type ManagerSourcedWithId = ManagerToClientChannel with HasClientTransactionId
|
2015-02-02 04:57:53 +01:00
|
|
|
type ClientSourcedWithId = ClientToManagerChannel with HasClientTransactionId
|
|
|
|
type ClientSourcedWithIdAndData = ClientToManagerChannel with
|
|
|
|
HasClientTransactionId with
|
|
|
|
HasTileLinkData
|
|
|
|
}
|
|
|
|
// Utility functions for constructing TileLinkIO arbiters
|
|
|
|
abstract class TileLinkArbiterLike(val arbN: Int) extends TLModule
|
|
|
|
with HasArbiterTypes {
|
2014-01-21 21:20:55 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
// These are filled in depending on whether the arbiter mucks with the
|
|
|
|
// client ids and then needs to revert them on the way back
|
2014-01-21 21:20:55 +01:00
|
|
|
def clientSourcedClientXactId(in: ClientSourcedWithId, id: Int): Bits
|
2014-12-30 07:55:58 +01:00
|
|
|
def managerSourcedClientXactId(in: ManagerSourcedWithId): Bits
|
|
|
|
def arbIdx(in: ManagerSourcedWithId): UInt
|
2014-01-21 21:20:55 +01:00
|
|
|
|
2015-02-02 04:57:53 +01:00
|
|
|
def hookupClientSource[M <: ClientSourcedWithIdAndData]
|
2014-03-29 18:53:49 +01:00
|
|
|
(ins: Seq[DecoupledIO[LogicalNetworkIO[M]]],
|
|
|
|
out: DecoupledIO[LogicalNetworkIO[M]]) {
|
2015-02-02 04:57:53 +01:00
|
|
|
def hasData(m: LogicalNetworkIO[M]) = m.payload.hasMultibeatData()
|
2014-12-07 12:02:20 +01:00
|
|
|
val arb = Module(new LockingRRArbiter(out.bits.clone, arbN, params(TLDataBeats), Some(hasData _)))
|
2014-01-21 21:20:55 +01:00
|
|
|
out <> arb.io.out
|
|
|
|
ins.zipWithIndex.zip(arb.io.in).map{ case ((req,id), arb) => {
|
2014-03-29 18:53:49 +01:00
|
|
|
arb.valid := req.valid
|
|
|
|
arb.bits := req.bits
|
|
|
|
arb.bits.payload.client_xact_id := clientSourcedClientXactId(req.bits.payload, id)
|
|
|
|
req.ready := arb.ready
|
2014-01-21 21:20:55 +01:00
|
|
|
}}
|
|
|
|
}
|
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
def hookupManagerSource[M <: ManagerSourcedWithId]
|
2014-01-21 21:20:55 +01:00
|
|
|
(ins: Seq[DecoupledIO[LogicalNetworkIO[M]]],
|
2014-03-29 18:53:49 +01:00
|
|
|
out: DecoupledIO[LogicalNetworkIO[M]]) {
|
2014-01-21 21:20:55 +01:00
|
|
|
out.ready := Bool(false)
|
|
|
|
for (i <- 0 until arbN) {
|
|
|
|
ins(i).valid := Bool(false)
|
|
|
|
when (arbIdx(out.bits.payload) === UInt(i)) {
|
|
|
|
ins(i).valid := out.valid
|
|
|
|
out.ready := ins(i).ready
|
|
|
|
}
|
|
|
|
ins(i).bits := out.bits
|
2014-12-30 07:55:58 +01:00
|
|
|
ins(i).bits.payload.client_xact_id := managerSourcedClientXactId(out.bits.payload)
|
2014-01-21 21:20:55 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-08-08 21:21:57 +02:00
|
|
|
abstract class UncachedTileLinkIOArbiter(n: Int)
|
|
|
|
extends TileLinkArbiterLike(n) {
|
2013-03-20 22:10:16 +01:00
|
|
|
val io = new Bundle {
|
2013-08-12 19:36:44 +02:00
|
|
|
val in = Vec.fill(n){new UncachedTileLinkIO}.flip
|
2013-03-20 22:10:16 +01:00
|
|
|
val out = new UncachedTileLinkIO
|
|
|
|
}
|
2014-01-21 21:20:55 +01:00
|
|
|
|
|
|
|
hookupClientSource(io.in.map(_.acquire), io.out.acquire)
|
2014-12-30 07:55:58 +01:00
|
|
|
hookupManagerSource(io.in.map(_.grant), io.out.grant)
|
2013-07-10 00:37:42 +02:00
|
|
|
|
2014-04-27 00:17:05 +02:00
|
|
|
val finish_arb = Module(new RRArbiter(new LogicalNetworkIO(new Finish), n))
|
|
|
|
io.out.finish <> finish_arb.io.out
|
|
|
|
finish_arb.io.in zip io.in map { case (arb, req) => arb <> req.finish }
|
2014-01-21 21:20:55 +01:00
|
|
|
}
|
2013-03-20 22:10:16 +01:00
|
|
|
|
2014-08-08 21:21:57 +02:00
|
|
|
abstract class TileLinkIOArbiter(n: Int) extends TileLinkArbiterLike(n) {
|
2014-01-21 21:20:55 +01:00
|
|
|
val io = new Bundle {
|
|
|
|
val in = Vec.fill(n){new TileLinkIO}.flip
|
|
|
|
val out = new TileLinkIO
|
2013-07-10 00:37:42 +02:00
|
|
|
}
|
|
|
|
|
2014-01-21 21:20:55 +01:00
|
|
|
hookupClientSource(io.in.map(_.acquire), io.out.acquire)
|
|
|
|
hookupClientSource(io.in.map(_.release), io.out.release)
|
2014-12-30 07:55:58 +01:00
|
|
|
hookupManagerSource(io.in.map(_.grant), io.out.grant)
|
2013-08-13 09:01:11 +02:00
|
|
|
|
2014-01-21 21:20:55 +01:00
|
|
|
io.in.map{ _.probe.valid := io.out.probe.valid }
|
|
|
|
io.in.map{ _.probe.bits := io.out.probe.bits }
|
|
|
|
io.out.probe.ready := io.in.map(_.probe.ready).reduce(_||_)
|
2013-07-10 00:37:42 +02:00
|
|
|
|
2014-04-27 00:17:05 +02:00
|
|
|
val finish_arb = Module(new RRArbiter(new LogicalNetworkIO(new Finish), n))
|
|
|
|
io.out.finish <> finish_arb.io.out
|
|
|
|
finish_arb.io.in zip io.in map { case (arb, req) => arb <> req.finish }
|
2013-07-10 00:37:42 +02:00
|
|
|
}
|
2014-01-21 21:20:55 +01:00
|
|
|
|
2014-12-30 07:55:58 +01:00
|
|
|
// Appends the port index of the arbiter to the client_xact_id
|
2015-02-02 04:57:53 +01:00
|
|
|
abstract trait AppendsArbiterId extends HasArbiterTypes {
|
|
|
|
def clientSourcedClientXactId(in: ClientSourcedWithId, id: Int) =
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2014-01-21 21:20:55 +01:00
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Cat(in.client_xact_id, UInt(id, log2Up(arbN)))
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2015-02-02 04:57:53 +01:00
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def managerSourcedClientXactId(in: ManagerSourcedWithId) =
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2014-01-21 21:20:55 +01:00
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in.client_xact_id >> UInt(log2Up(arbN))
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2015-02-02 04:57:53 +01:00
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def arbIdx(in: ManagerSourcedWithId) = in.client_xact_id(log2Up(arbN)-1,0).toUInt
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2014-01-21 21:20:55 +01:00
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}
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2014-12-30 07:55:58 +01:00
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// Uses the client_xact_id as is (assumes it has been set to port index)
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2015-02-02 04:57:53 +01:00
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abstract trait PassesId extends HasArbiterTypes {
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def clientSourcedClientXactId(in: ClientSourcedWithId, id: Int) = in.client_xact_id
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def managerSourcedClientXactId(in: ManagerSourcedWithId) = in.client_xact_id
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def arbIdx(in: ManagerSourcedWithId) = in.client_xact_id
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2014-01-21 21:20:55 +01:00
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}
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2014-12-30 07:55:58 +01:00
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// Overwrites some default client_xact_id with the port idx
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2015-02-02 04:57:53 +01:00
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abstract trait UsesNewId extends HasArbiterTypes {
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def clientSourcedClientXactId(in: ClientSourcedWithId, id: Int) = UInt(id, log2Up(arbN))
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def managerSourcedClientXactId(in: ManagerSourcedWithId) = UInt(0)
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def arbIdx(in: ManagerSourcedWithId) = in.client_xact_id
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2014-01-21 21:20:55 +01:00
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}
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2014-12-30 07:55:58 +01:00
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// Mix-in id generation traits to make concrete arbiter classes
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2014-08-08 21:21:57 +02:00
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class UncachedTileLinkIOArbiterThatAppendsArbiterId(val n: Int) extends UncachedTileLinkIOArbiter(n) with AppendsArbiterId
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class UncachedTileLinkIOArbiterThatPassesId(val n: Int) extends UncachedTileLinkIOArbiter(n) with PassesId
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class UncachedTileLinkIOArbiterThatUsesNewId(val n: Int) extends UncachedTileLinkIOArbiter(n) with UsesNewId
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class TileLinkIOArbiterThatAppendsArbiterId(val n: Int) extends TileLinkIOArbiter(n) with AppendsArbiterId
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class TileLinkIOArbiterThatPassesId(val n: Int) extends TileLinkIOArbiter(n) with PassesId
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class TileLinkIOArbiterThatUsesNewId(val n: Int) extends TileLinkIOArbiter(n) with UsesNewId
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