riscv/rocket-chip
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change names of RoCC tilelink interfaces to be more sensible

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This commit is contained in:
Howard Mao 2015-12-02 16:28:23 -08:00
parent f67b02fadb
commit 369ee74a2c
2 changed files with 17 additions and 23 deletions
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30
rocket/src/main/scala/rocc.scala
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@ -42,8 +42,8 @@ class RoCCInterface(implicit p: Parameters) extends Bundle {
val interrupt = Bool(OUTPUT)
// These should be handled differently, eventually
val imem = new ClientUncachedTileLinkIO
val dmem = Vec(p(RoccNMemChannels), new ClientUncachedTileLinkIO)
val autl = new ClientUncachedTileLinkIO
val utl = Vec(p(RoccNMemChannels), new ClientUncachedTileLinkIO)
val iptw = new TLBPTWIO
val dptw = new TLBPTWIO
val pptw = new TLBPTWIO
@ -122,10 +122,8 @@ class AccumulatorExample(n: Int = 4)(implicit p: Parameters) extends RoCC()(p) {
io.mem.req.bits.data := Bits(0) // we're not performing any stores...
io.mem.invalidate_lr := false
io.imem.acquire.valid := false
io.imem.grant.ready := false
io.dmem.head.acquire.valid := false
io.dmem.head.grant.ready := false
io.autl.acquire.valid := false
io.autl.grant.ready := false
io.iptw.req.valid := false
io.dptw.req.valid := false
io.pptw.req.valid := false
@ -172,10 +170,8 @@ class TranslatorExample(implicit p: Parameters) extends RoCC()(p) {
io.busy := (state =/= s_idle)
io.interrupt := Bool(false)
io.mem.req.valid := Bool(false)
io.dmem.head.acquire.valid := Bool(false)
io.dmem.head.grant.ready := Bool(false)
io.imem.acquire.valid := Bool(false)
io.imem.grant.ready := Bool(false)
io.autl.acquire.valid := Bool(false)
io.autl.grant.ready := Bool(false)
io.iptw.req.valid := Bool(false)
io.pptw.req.valid := Bool(false)
}
@ -197,7 +193,7 @@ class CharacterCountExample(implicit p: Parameters) extends RoCC()(p)
val s_idle :: s_acq :: s_gnt :: s_check :: s_resp :: Nil = Enum(Bits(), 5)
val state = Reg(init = s_idle)
val gnt = io.dmem.head.grant.bits
val gnt = io.autl.grant.bits
val recv_data = Reg(UInt(width = tlDataBits))
val recv_beat = Reg(UInt(width = tlBeatAddrBits))
@ -218,9 +214,9 @@ class CharacterCountExample(implicit p: Parameters) extends RoCC()(p)
io.resp.valid := (state === s_resp)
io.resp.bits.rd := resp_rd
io.resp.bits.data := count
io.dmem.head.acquire.valid := (state === s_acq)
io.dmem.head.acquire.bits := GetBlock(addr_block = addr_block)
io.dmem.head.grant.ready := (state === s_gnt)
io.autl.acquire.valid := (state === s_acq)
io.autl.acquire.bits := GetBlock(addr_block = addr_block)
io.autl.grant.ready := (state === s_gnt)
when (io.cmd.fire()) {
addr := io.cmd.bits.rs1
@ -231,9 +227,9 @@ class CharacterCountExample(implicit p: Parameters) extends RoCC()(p)
state := s_acq
}
when (io.dmem.head.acquire.fire()) { state := s_gnt }
when (io.autl.acquire.fire()) { state := s_gnt }
when (io.dmem.head.grant.fire()) {
when (io.autl.grant.fire()) {
recv_beat := gnt.addr_beat
recv_data := gnt.data
state := s_check
@ -257,8 +253,6 @@ class CharacterCountExample(implicit p: Parameters) extends RoCC()(p)
io.busy := (state =/= s_idle)
io.interrupt := Bool(false)
io.mem.req.valid := Bool(false)
io.imem.acquire.valid := Bool(false)
io.imem.grant.ready := Bool(false)
io.dptw.req.valid := Bool(false)
io.iptw.req.valid := Bool(false)
io.pptw.req.valid := Bool(false)

10
rocket/src/main/scala/tile.scala
View File

@ -13,7 +13,7 @@ case object BuildRoCC extends Field[Seq[RoccParameters]]
case class RoccParameters(
opcodes: OpcodeSet,
generator: Parameters => RoCC,
nMemChannels: Int = 1,
nMemChannels: Int = 0,
useFPU: Boolean = false)
abstract class Tile(resetSignal: Bool = null)
@ -63,8 +63,8 @@ class RocketTile(resetSignal: Bool = null)(implicit p: Parameters) extends Tile(
// If so specified, build an RoCC module and wire it to core + TileLink ports,
// otherwise just hookup the icache
io.uncached <> (if (usingRocc) {
val iMemArb = Module(new ClientTileLinkIOArbiter(1 + nRocc))
iMemArb.io.in(0) <> icache.io.mem
val uncachedArb = Module(new ClientTileLinkIOArbiter(1 + nRocc))
uncachedArb.io.in(0) <> icache.io.mem
val respArb = Module(new RRArbiter(new RoCCResponse, nRocc))
core.io.rocc.resp <> respArb.io.out
@ -82,7 +82,7 @@ class RocketTile(resetSignal: Bool = null)(implicit p: Parameters) extends Tile(
rocc.io.exception := core.io.rocc.exception
dcIF.io.requestor <> rocc.io.mem
dcArb.io.requestor(2 + i) <> dcIF.io.cache
iMemArb.io.in(1 + i) <> rocc.io.imem
uncachedArb.io.in(1 + i) <> rocc.io.autl
ptw.io.requestor(2 + 3 * i) <> rocc.io.iptw
ptw.io.requestor(3 + 3 * i) <> rocc.io.dptw
ptw.io.requestor(4 + 3 * i) <> rocc.io.pptw
@ -108,7 +108,7 @@ class RocketTile(resetSignal: Bool = null)(implicit p: Parameters) extends Tile(
core.io.rocc.interrupt := roccs.map(_.io.interrupt).reduce(_ || _)
respArb.io.in <> roccs.map(rocc => Queue(rocc.io.resp))
roccs.flatMap(_.io.dmem) :+ iMemArb.io.out
roccs.flatMap(_.io.utl) :+ uncachedArb.io.out
} else { Seq(icache.io.mem) })
if (!usingRocc || nFPUPorts == 0) {