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changed val names in hub to match new tilelink names

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This commit is contained in:
Henry Cook 2013-01-22 20:09:21 -08:00
parent c211d74e95
commit b5ccdab514
1 changed files with 231 additions and 231 deletions
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462
uncore/src/uncore.scala
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@ -24,14 +24,14 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
val p_data = (new PipeIO) { new TrackerProbeData }.flip val p_data = (new PipeIO) { new TrackerProbeData }.flip
val can_alloc = Bool(INPUT) val can_alloc = Bool(INPUT)
val grant_ack = Bool(INPUT) val grant_ack = Bool(INPUT)
val p_rep_cnt_dec = Bits(INPUT, conf.ln.nTiles) val release_cnt_dec = Bits(INPUT, conf.ln.nTiles)
val p_req_cnt_inc = Bits(INPUT, conf.ln.nTiles) val probe_cnt_inc = Bits(INPUT, conf.ln.nTiles)
val tile_incoherent = Bits(INPUT, conf.ln.nTiles) val tile_incoherent = Bits(INPUT, conf.ln.nTiles)
val p_rep_data = (new PipeIO) { new ReleaseData }.flip val release_data = (new PipeIO) { new ReleaseData }.flip
val x_init_data = (new PipeIO) { new AcquireData }.flip val acquire_data = (new PipeIO) { new AcquireData }.flip
val sent_grant_ack = Bool(INPUT) val sent_grant_ack = Bool(INPUT)
val p_rep_data_dep = (new PipeIO) { new TrackerDependency }.flip val release_data_dep = (new PipeIO) { new TrackerDependency }.flip
val x_init_data_dep = (new PipeIO) { new TrackerDependency }.flip val acquire_data_dep = (new PipeIO) { new TrackerDependency }.flip
val mem_req_cmd = (new FIFOIO) { new MemReqCmd } val mem_req_cmd = (new FIFOIO) { new MemReqCmd }
val mem_req_data = (new FIFOIO) { new MemData } val mem_req_data = (new FIFOIO) { new MemData }
@ -40,17 +40,17 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
val busy = Bool(OUTPUT) val busy = Bool(OUTPUT)
val addr = Bits(OUTPUT, PADDR_BITS - OFFSET_BITS) val addr = Bits(OUTPUT, PADDR_BITS - OFFSET_BITS)
val init_client_id = Bits(OUTPUT, conf.ln.idBits) val init_client_id = Bits(OUTPUT, conf.ln.idBits)
val p_rep_client_id = Bits(OUTPUT, conf.ln.idBits) val release_client_id = Bits(OUTPUT, conf.ln.idBits)
val client_xact_id = Bits(OUTPUT, CLIENT_XACT_ID_BITS) val client_xact_id = Bits(OUTPUT, CLIENT_XACT_ID_BITS)
val sharer_count = Bits(OUTPUT, conf.ln.idBits+1) val sharer_count = Bits(OUTPUT, conf.ln.idBits+1)
val a_type = Bits(OUTPUT, ACQUIRE_TYPE_MAX_BITS) val a_type = Bits(OUTPUT, ACQUIRE_TYPE_MAX_BITS)
val push_p_req = Bits(OUTPUT, conf.ln.nTiles) val push_probe = Bits(OUTPUT, conf.ln.nTiles)
val pop_p_rep = Bits(OUTPUT, conf.ln.nTiles) val pop_release = Bits(OUTPUT, conf.ln.nTiles)
val pop_p_rep_data = Bits(OUTPUT, conf.ln.nTiles) val pop_release_data = Bits(OUTPUT, conf.ln.nTiles)
val pop_p_rep_dep = Bits(OUTPUT, conf.ln.nTiles) val pop_release_dep = Bits(OUTPUT, conf.ln.nTiles)
val pop_x_init = Bits(OUTPUT, conf.ln.nTiles) val pop_acquire = Bits(OUTPUT, conf.ln.nTiles)
val pop_x_init_data = Bits(OUTPUT, conf.ln.nTiles) val pop_acquire_data = Bits(OUTPUT, conf.ln.nTiles)
val pop_x_init_dep = Bits(OUTPUT, conf.ln.nTiles) val pop_acquire_dep = Bits(OUTPUT, conf.ln.nTiles)
val send_grant_ack = Bool(OUTPUT) val send_grant_ack = Bool(OUTPUT)
} }
@ -91,19 +91,19 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
val state = Reg(resetVal = s_idle) val state = Reg(resetVal = s_idle)
val xact = Reg{ new Acquire } val xact = Reg{ new Acquire }
val init_client_id_ = Reg{ Bits() } val init_client_id_ = Reg{ Bits() }
val p_rep_count = if (conf.ln.nTiles == 1) UFix(0) else Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles))) val release_count = if (conf.ln.nTiles == 1) UFix(0) else Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles)))
val p_req_flags = Reg(resetVal = Bits(0, width = conf.ln.nTiles)) val probe_flags = Reg(resetVal = Bits(0, width = conf.ln.nTiles))
val p_rep_client_id_ = Reg{ Bits() } val release_client_id_ = Reg{ Bits() }
val x_needs_read = Reg(resetVal = Bool(false)) val x_needs_read = Reg(resetVal = Bool(false))
val x_init_data_needs_write = Reg(resetVal = Bool(false)) val acquire_data_needs_write = Reg(resetVal = Bool(false))
val p_rep_data_needs_write = Reg(resetVal = Bool(false)) val release_data_needs_write = Reg(resetVal = Bool(false))
val x_w_mem_cmd_sent = Reg(resetVal = Bool(false)) val x_w_mem_cmd_sent = Reg(resetVal = Bool(false))
val p_w_mem_cmd_sent = Reg(resetVal = Bool(false)) val p_w_mem_cmd_sent = Reg(resetVal = Bool(false))
val mem_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES))) val mem_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES)))
val mem_cnt_next = mem_cnt + UFix(1) val mem_cnt_next = mem_cnt + UFix(1)
val mem_cnt_max = ~UFix(0, width = log2Up(REFILL_CYCLES)) val mem_cnt_max = ~UFix(0, width = log2Up(REFILL_CYCLES))
val p_req_initial_flags = Bits(width = conf.ln.nTiles) val probe_initial_flags = Bits(width = conf.ln.nTiles)
p_req_initial_flags := Bits(0) probe_initial_flags := Bits(0)
if (conf.ln.nTiles > 1) { if (conf.ln.nTiles > 1) {
// issue self-probes for uncached read xacts to facilitate I$ coherence // issue self-probes for uncached read xacts to facilitate I$ coherence
// TODO: this is hackish; figure out how to do it more systematically // TODO: this is hackish; figure out how to do it more systematically
@ -112,13 +112,13 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
case _ => Bool(false) case _ => Bool(false)
} }
val myflag = Mux(probe_self, Bits(0), UFixToOH(io.alloc_req.bits.client_id(log2Up(conf.ln.nTiles)-1,0))) val myflag = Mux(probe_self, Bits(0), UFixToOH(io.alloc_req.bits.client_id(log2Up(conf.ln.nTiles)-1,0)))
p_req_initial_flags := ~(io.tile_incoherent | myflag) probe_initial_flags := ~(io.tile_incoherent | myflag)
} }
io.busy := state != s_idle io.busy := state != s_idle
io.addr := xact.addr io.addr := xact.addr
io.init_client_id := init_client_id_ io.init_client_id := init_client_id_
io.p_rep_client_id := p_rep_client_id_ io.release_client_id := release_client_id_
io.client_xact_id := xact.client_xact_id io.client_xact_id := xact.client_xact_id
io.sharer_count := UFix(conf.ln.nTiles) // TODO: Broadcast only io.sharer_count := UFix(conf.ln.nTiles) // TODO: Broadcast only
io.a_type := xact.a_type io.a_type := xact.a_type
@ -134,13 +134,13 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
io.probe.bits.p_type := co.getProbeType(xact.a_type, UFix(0)) io.probe.bits.p_type := co.getProbeType(xact.a_type, UFix(0))
io.probe.bits.master_xact_id := UFix(id) io.probe.bits.master_xact_id := UFix(id)
io.probe.bits.addr := xact.addr io.probe.bits.addr := xact.addr
io.push_p_req := Bits(0, width = conf.ln.nTiles) io.push_probe := Bits(0, width = conf.ln.nTiles)
io.pop_p_rep := Bits(0, width = conf.ln.nTiles) io.pop_release := Bits(0, width = conf.ln.nTiles)
io.pop_p_rep_data := Bits(0, width = conf.ln.nTiles) io.pop_release_data := Bits(0, width = conf.ln.nTiles)
io.pop_p_rep_dep := Bits(0, width = conf.ln.nTiles) io.pop_release_dep := Bits(0, width = conf.ln.nTiles)
io.pop_x_init := Bits(0, width = conf.ln.nTiles) io.pop_acquire := Bits(0, width = conf.ln.nTiles)
io.pop_x_init_data := Bits(0, width = conf.ln.nTiles) io.pop_acquire_data := Bits(0, width = conf.ln.nTiles)
io.pop_x_init_dep := Bits(0, width = conf.ln.nTiles) io.pop_acquire_dep := Bits(0, width = conf.ln.nTiles)
io.send_grant_ack := Bool(false) io.send_grant_ack := Bool(false)
switch (state) { switch (state) {
@ -148,62 +148,62 @@ class XactTrackerBroadcast(id: Int)(implicit conf: CoherenceHubConfiguration) ex
when( io.alloc_req.valid && io.can_alloc ) { when( io.alloc_req.valid && io.can_alloc ) {
xact := io.alloc_req.bits.acquire xact := io.alloc_req.bits.acquire
init_client_id_ := io.alloc_req.bits.client_id init_client_id_ := io.alloc_req.bits.client_id
x_init_data_needs_write := co.messageHasData(io.alloc_req.bits.acquire) acquire_data_needs_write := co.messageHasData(io.alloc_req.bits.acquire)
x_needs_read := co.needsMemRead(io.alloc_req.bits.acquire.a_type, UFix(0)) x_needs_read := co.needsMemRead(io.alloc_req.bits.acquire.a_type, UFix(0))
p_req_flags := p_req_initial_flags probe_flags := probe_initial_flags
mem_cnt := UFix(0) mem_cnt := UFix(0)
p_w_mem_cmd_sent := Bool(false) p_w_mem_cmd_sent := Bool(false)
x_w_mem_cmd_sent := Bool(false) x_w_mem_cmd_sent := Bool(false)
io.pop_x_init := UFix(1) << io.alloc_req.bits.client_id io.pop_acquire := UFix(1) << io.alloc_req.bits.client_id
if(conf.ln.nTiles > 1) { if(conf.ln.nTiles > 1) {
p_rep_count := PopCount(p_req_initial_flags) release_count := PopCount(probe_initial_flags)
state := Mux(p_req_initial_flags.orR, s_probe, s_mem) state := Mux(probe_initial_flags.orR, s_probe, s_mem)
} else state := s_mem } else state := s_mem
} }
} }
is(s_probe) { is(s_probe) {
when(p_req_flags.orR) { when(probe_flags.orR) {
io.push_p_req := p_req_flags io.push_probe := probe_flags
io.probe.valid := Bool(true) io.probe.valid := Bool(true)
} }
when(io.p_req_cnt_inc.orR) { when(io.probe_cnt_inc.orR) {
p_req_flags := p_req_flags & ~io.p_req_cnt_inc // unflag sent reqs probe_flags := probe_flags & ~io.probe_cnt_inc // unflag sent reqs
} }
when(io.p_rep_cnt_dec.orR) { when(io.release_cnt_dec.orR) {
val dec = PopCount(io.p_rep_cnt_dec) val dec = PopCount(io.release_cnt_dec)
io.pop_p_rep := io.p_rep_cnt_dec io.pop_release := io.release_cnt_dec
if(conf.ln.nTiles > 1) p_rep_count := p_rep_count - dec if(conf.ln.nTiles > 1) release_count := release_count - dec
when(p_rep_count === dec) { when(release_count === dec) {
state := s_mem state := s_mem
} }
} }
when(io.p_data.valid) { when(io.p_data.valid) {
p_rep_data_needs_write := Bool(true) release_data_needs_write := Bool(true)
p_rep_client_id_ := io.p_data.bits.client_id release_client_id_ := io.p_data.bits.client_id
} }
} }
is(s_mem) { is(s_mem) {
when (p_rep_data_needs_write) { when (release_data_needs_write) {
doMemReqWrite(io.mem_req_cmd, doMemReqWrite(io.mem_req_cmd,
io.mem_req_data, io.mem_req_data,
io.mem_req_lock, io.mem_req_lock,
io.p_rep_data, io.release_data,
p_rep_data_needs_write, release_data_needs_write,
p_w_mem_cmd_sent, p_w_mem_cmd_sent,
io.pop_p_rep_data, io.pop_release_data,
io.pop_p_rep_dep, io.pop_release_dep,
io.p_rep_data_dep.valid && (io.p_rep_data_dep.bits.master_xact_id === UFix(id)), io.release_data_dep.valid && (io.release_data_dep.bits.master_xact_id === UFix(id)),
p_rep_client_id_) release_client_id_)
} . elsewhen(x_init_data_needs_write) { } . elsewhen(acquire_data_needs_write) {
doMemReqWrite(io.mem_req_cmd, doMemReqWrite(io.mem_req_cmd,
io.mem_req_data, io.mem_req_data,
io.mem_req_lock, io.mem_req_lock,
io.x_init_data, io.acquire_data,
x_init_data_needs_write, acquire_data_needs_write,
x_w_mem_cmd_sent, x_w_mem_cmd_sent,
io.pop_x_init_data, io.pop_acquire_data,
io.pop_x_init_dep, io.pop_acquire_dep,
io.x_init_data_dep.valid && (io.x_init_data_dep.bits.master_xact_id === UFix(id)), io.acquire_data_dep.valid && (io.acquire_data_dep.bits.master_xact_id === UFix(id)),
init_client_id_) init_client_id_)
} . elsewhen (x_needs_read) { } . elsewhen (x_needs_read) {
doMemReqRead(io.mem_req_cmd, x_needs_read) doMemReqRead(io.mem_req_cmd, x_needs_read)
@ -274,22 +274,22 @@ class CoherenceHubNull(implicit conf: CoherenceHubConfiguration) extends Coheren
{ {
val co = conf.co.asInstanceOf[ThreeStateIncoherence] val co = conf.co.asInstanceOf[ThreeStateIncoherence]
val x_init = io.tiles(0).acquire val acquire = io.tiles(0).acquire
val is_write = x_init.bits.payload.a_type === co.acquireWriteback val is_write = acquire.bits.payload.a_type === co.acquireWriteback
x_init.ready := io.mem.req_cmd.ready && !(is_write && io.mem.resp.valid) //stall write req/resp to handle previous read resp acquire.ready := io.mem.req_cmd.ready && !(is_write && io.mem.resp.valid) //stall write req/resp to handle previous read resp
io.mem.req_cmd.valid := x_init.valid && !(is_write && io.mem.resp.valid) io.mem.req_cmd.valid := acquire.valid && !(is_write && io.mem.resp.valid)
io.mem.req_cmd.bits.rw := is_write io.mem.req_cmd.bits.rw := is_write
io.mem.req_cmd.bits.tag := x_init.bits.payload.client_xact_id io.mem.req_cmd.bits.tag := acquire.bits.payload.client_xact_id
io.mem.req_cmd.bits.addr := x_init.bits.payload.addr io.mem.req_cmd.bits.addr := acquire.bits.payload.addr
io.mem.req_data <> io.tiles(0).acquire_data io.mem.req_data <> io.tiles(0).acquire_data
val grant = io.tiles(0).grant val grant = io.tiles(0).grant
grant.bits.payload.g_type := Mux(io.mem.resp.valid, co.grantData, co.grantAck) grant.bits.payload.g_type := Mux(io.mem.resp.valid, co.grantData, co.grantAck)
grant.bits.payload.client_xact_id := Mux(io.mem.resp.valid, io.mem.resp.bits.tag, x_init.bits.payload.client_xact_id) grant.bits.payload.client_xact_id := Mux(io.mem.resp.valid, io.mem.resp.bits.tag, acquire.bits.payload.client_xact_id)
grant.bits.payload.master_xact_id := UFix(0) // don't care grant.bits.payload.master_xact_id := UFix(0) // don't care
grant.bits.payload.data := io.mem.resp.bits.data grant.bits.payload.data := io.mem.resp.bits.data
grant.bits.payload.require_ack := Bool(true) grant.bits.payload.require_ack := Bool(true)
grant.valid := io.mem.resp.valid || x_init.valid && is_write && io.mem.req_cmd.ready grant.valid := io.mem.resp.valid || acquire.valid && is_write && io.mem.req_cmd.ready
io.tiles(0).abort.valid := Bool(false) io.tiles(0).abort.valid := Bool(false)
io.tiles(0).grant_ack.ready := Bool(true) io.tiles(0).grant_ack.ready := Bool(true)
@ -314,8 +314,8 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
val send_grant_ack_arr = Vec(NGLOBAL_XACTS){ Bool() } val send_grant_ack_arr = Vec(NGLOBAL_XACTS){ Bool() }
val do_free_arr = Vec(NGLOBAL_XACTS){ Bool() } val do_free_arr = Vec(NGLOBAL_XACTS){ Bool() }
val p_rep_cnt_dec_arr = VecBuf(NGLOBAL_XACTS){ Vec(conf.ln.nTiles){ Bool()} } val release_cnt_dec_arr = VecBuf(NGLOBAL_XACTS){ Vec(conf.ln.nTiles){ Bool()} }
val p_req_cnt_inc_arr = VecBuf(NGLOBAL_XACTS){ Vec(conf.ln.nTiles){ Bool()} } val probe_cnt_inc_arr = VecBuf(NGLOBAL_XACTS){ Vec(conf.ln.nTiles){ Bool()} }
val sent_grant_ack_arr = Vec(NGLOBAL_XACTS){ Bool() } val sent_grant_ack_arr = Vec(NGLOBAL_XACTS){ Bool() }
val p_data_client_id_arr = Vec(NGLOBAL_XACTS){ Bits(width=conf.ln.idBits) } val p_data_client_id_arr = Vec(NGLOBAL_XACTS){ Bits(width=conf.ln.idBits) }
val p_data_valid_arr = Vec(NGLOBAL_XACTS){ Bool() } val p_data_valid_arr = Vec(NGLOBAL_XACTS){ Bool() }
@ -332,8 +332,8 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
t.grant_ack := do_free_arr(i) t.grant_ack := do_free_arr(i)
t.p_data.bits.client_id := p_data_client_id_arr(i) t.p_data.bits.client_id := p_data_client_id_arr(i)
t.p_data.valid := p_data_valid_arr(i) t.p_data.valid := p_data_valid_arr(i)
t.p_rep_cnt_dec := p_rep_cnt_dec_arr(i).toBits t.release_cnt_dec := release_cnt_dec_arr(i).toBits
t.p_req_cnt_inc := p_req_cnt_inc_arr(i).toBits t.probe_cnt_inc := probe_cnt_inc_arr(i).toBits
t.tile_incoherent := io.incoherent.toBits t.tile_incoherent := io.incoherent.toBits
t.sent_grant_ack := sent_grant_ack_arr(i) t.sent_grant_ack := sent_grant_ack_arr(i)
do_free_arr(i) := Bool(false) do_free_arr(i) := Bool(false)
@ -341,21 +341,21 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
p_data_client_id_arr(i) := Bits(0, width = conf.ln.idBits) p_data_client_id_arr(i) := Bits(0, width = conf.ln.idBits)
p_data_valid_arr(i) := Bool(false) p_data_valid_arr(i) := Bool(false)
for( j <- 0 until conf.ln.nTiles) { for( j <- 0 until conf.ln.nTiles) {
p_rep_cnt_dec_arr(i)(j) := Bool(false) release_cnt_dec_arr(i)(j) := Bool(false)
p_req_cnt_inc_arr(i)(j) := Bool(false) probe_cnt_inc_arr(i)(j) := Bool(false)
} }
} }
val p_rep_data_dep_list = List.fill(conf.ln.nTiles)((new Queue(NGLOBAL_XACTS)){new TrackerDependency}) // depth must >= NPRIMARY val release_data_dep_list = List.fill(conf.ln.nTiles)((new Queue(NGLOBAL_XACTS)){new TrackerDependency}) // depth must >= NPRIMARY
val x_init_data_dep_list = List.fill(conf.ln.nTiles)((new Queue(NGLOBAL_XACTS)){new TrackerDependency}) // depth should >= NPRIMARY val acquire_data_dep_list = List.fill(conf.ln.nTiles)((new Queue(NGLOBAL_XACTS)){new TrackerDependency}) // depth should >= NPRIMARY
// Free finished transactions // Free finished transactions
for( j <- 0 until conf.ln.nTiles ) { for( j <- 0 until conf.ln.nTiles ) {
val finish = io.tiles(j).grant_ack val ack = io.tiles(j).grant_ack
when (finish.valid) { when (ack.valid) {
do_free_arr(finish.bits.payload.master_xact_id) := Bool(true) do_free_arr(ack.bits.payload.master_xact_id) := Bool(true)
} }
finish.ready := Bool(true) ack.ready := Bool(true)
} }
// Reply to initial requestor // Reply to initial requestor
@ -402,31 +402,31 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
// Handle probe replies, which may or may not have data // Handle probe replies, which may or may not have data
for( j <- 0 until conf.ln.nTiles ) { for( j <- 0 until conf.ln.nTiles ) {
val p_rep = io.tiles(j).release val release = io.tiles(j).release
val p_rep_data = io.tiles(j).release_data val release_data = io.tiles(j).release_data
val idx = p_rep.bits.payload.master_xact_id val idx = release.bits.payload.master_xact_id
val pop_p_reps = trackerList.map(_.io.pop_p_rep(j).toBool) val pop_releases = trackerList.map(_.io.pop_release(j).toBool)
val do_pop = foldR(pop_p_reps)(_ || _) val do_pop = foldR(pop_releases)(_ || _)
p_rep.ready := Bool(true) release.ready := Bool(true)
p_rep_data_dep_list(j).io.enq.valid := p_rep.valid && co.messageHasData(p_rep.bits.payload) release_data_dep_list(j).io.enq.valid := release.valid && co.messageHasData(release.bits.payload)
p_rep_data_dep_list(j).io.enq.bits.master_xact_id := p_rep.bits.payload.master_xact_id release_data_dep_list(j).io.enq.bits.master_xact_id := release.bits.payload.master_xact_id
p_rep_data.ready := foldR(trackerList.map(_.io.pop_p_rep_data(j)))(_ || _) release_data.ready := foldR(trackerList.map(_.io.pop_release_data(j)))(_ || _)
when (p_rep.valid && co.messageHasData(p_rep.bits.payload)) { when (release.valid && co.messageHasData(release.bits.payload)) {
p_data_valid_arr(idx) := Bool(true) p_data_valid_arr(idx) := Bool(true)
p_data_client_id_arr(idx) := UFix(j) p_data_client_id_arr(idx) := UFix(j)
} }
p_rep_data_dep_list(j).io.deq.ready := foldR(trackerList.map(_.io.pop_p_rep_dep(j).toBool))(_||_) release_data_dep_list(j).io.deq.ready := foldR(trackerList.map(_.io.pop_release_dep(j).toBool))(_||_)
} }
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
trackerList(i).io.p_rep_data.valid := io.tiles(trackerList(i).io.p_rep_client_id).release_data.valid trackerList(i).io.release_data.valid := io.tiles(trackerList(i).io.release_client_id).release_data.valid
trackerList(i).io.p_rep_data.bits := io.tiles(trackerList(i).io.p_rep_client_id).release_data.bits.payload trackerList(i).io.release_data.bits := io.tiles(trackerList(i).io.release_client_id).release_data.bits.payload
trackerList(i).io.p_rep_data_dep.valid := MuxLookup(trackerList(i).io.p_rep_client_id, p_rep_data_dep_list(0).io.deq.valid, (0 until conf.ln.nTiles).map( j => UFix(j) -> p_rep_data_dep_list(j).io.deq.valid)) trackerList(i).io.release_data_dep.valid := MuxLookup(trackerList(i).io.release_client_id, release_data_dep_list(0).io.deq.valid, (0 until conf.ln.nTiles).map( j => UFix(j) -> release_data_dep_list(j).io.deq.valid))
trackerList(i).io.p_rep_data_dep.bits := MuxLookup(trackerList(i).io.p_rep_client_id, p_rep_data_dep_list(0).io.deq.bits, (0 until conf.ln.nTiles).map( j => UFix(j) -> p_rep_data_dep_list(j).io.deq.bits)) trackerList(i).io.release_data_dep.bits := MuxLookup(trackerList(i).io.release_client_id, release_data_dep_list(0).io.deq.bits, (0 until conf.ln.nTiles).map( j => UFix(j) -> release_data_dep_list(j).io.deq.bits))
for( j <- 0 until conf.ln.nTiles) { for( j <- 0 until conf.ln.nTiles) {
val p_rep = io.tiles(j).release val release = io.tiles(j).release
p_rep_cnt_dec_arr(i)(j) := p_rep.valid && (p_rep.bits.payload.master_xact_id === UFix(i)) release_cnt_dec_arr(i)(j) := release.valid && (release.bits.payload.master_xact_id === UFix(i))
} }
} }
@ -435,31 +435,31 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
val abort_state_arr = Vec(conf.ln.nTiles) { Reg(resetVal = s_idle) } val abort_state_arr = Vec(conf.ln.nTiles) { Reg(resetVal = s_idle) }
val want_to_abort_arr = Vec(conf.ln.nTiles) { Bool() } val want_to_abort_arr = Vec(conf.ln.nTiles) { Bool() }
for( j <- 0 until conf.ln.nTiles ) { for( j <- 0 until conf.ln.nTiles ) {
val x_init = io.tiles(j).acquire val acquire = io.tiles(j).acquire
val x_init_data = io.tiles(j).acquire_data val acquire_data = io.tiles(j).acquire_data
val x_abort = io.tiles(j).abort val x_abort = io.tiles(j).abort
val abort_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES))) val abort_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES)))
val conflicts = Vec(NGLOBAL_XACTS) { Bool() } val conflicts = Vec(NGLOBAL_XACTS) { Bool() }
for( i <- 0 until NGLOBAL_XACTS) { for( i <- 0 until NGLOBAL_XACTS) {
val t = trackerList(i).io val t = trackerList(i).io
conflicts(i) := t.busy && x_init.valid && co.isCoherenceConflict(t.addr, x_init.bits.payload.addr) conflicts(i) := t.busy && acquire.valid && co.isCoherenceConflict(t.addr, acquire.bits.payload.addr)
} }
x_abort.bits.payload.client_xact_id := x_init.bits.payload.client_xact_id x_abort.bits.payload.client_xact_id := acquire.bits.payload.client_xact_id
want_to_abort_arr(j) := x_init.valid && (conflicts.toBits.orR || busy_arr.toBits.andR || (!x_init_data_dep_list(j).io.enq.ready && co.messageHasData(x_init.bits.payload))) want_to_abort_arr(j) := acquire.valid && (conflicts.toBits.orR || busy_arr.toBits.andR || (!acquire_data_dep_list(j).io.enq.ready && co.messageHasData(acquire.bits.payload)))
x_abort.valid := Bool(false) x_abort.valid := Bool(false)
switch(abort_state_arr(j)) { switch(abort_state_arr(j)) {
is(s_idle) { is(s_idle) {
when(want_to_abort_arr(j)) { when(want_to_abort_arr(j)) {
when(co.messageHasData(x_init.bits.payload)) { when(co.messageHasData(acquire.bits.payload)) {
abort_state_arr(j) := s_abort_drain abort_state_arr(j) := s_abort_drain
} . otherwise { } . otherwise {
abort_state_arr(j) := s_abort_send abort_state_arr(j) := s_abort_send
} }
} }
} }
is(s_abort_drain) { // raises x_init_data.ready below is(s_abort_drain) { // raises acquire_data.ready below
when(x_init_data.valid) { when(acquire_data.valid) {
abort_cnt := abort_cnt + UFix(1) abort_cnt := abort_cnt + UFix(1)
when(abort_cnt === ~UFix(0, width = log2Up(REFILL_CYCLES))) { when(abort_cnt === ~UFix(0, width = log2Up(REFILL_CYCLES))) {
abort_state_arr(j) := s_abort_send abort_state_arr(j) := s_abort_send
@ -468,7 +468,7 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
} }
is(s_abort_send) { // nothing is dequeued for now is(s_abort_send) { // nothing is dequeued for now
x_abort.valid := Bool(true) x_abort.valid := Bool(true)
when(x_abort.ready) { // raises x_init.ready below when(x_abort.ready) { // raises acquire.ready below
abort_state_arr(j) := s_idle abort_state_arr(j) := s_idle
} }
} }
@ -486,41 +486,41 @@ class CoherenceHubBroadcast(implicit conf: CoherenceHubConfiguration) extends Co
trackerList(i).io.alloc_req.bits := init_arb.io.out.bits trackerList(i).io.alloc_req.bits := init_arb.io.out.bits
trackerList(i).io.alloc_req.valid := init_arb.io.out.valid trackerList(i).io.alloc_req.valid := init_arb.io.out.valid
trackerList(i).io.x_init_data.bits := io.tiles(trackerList(i).io.init_client_id).acquire_data.bits.payload trackerList(i).io.acquire_data.bits := io.tiles(trackerList(i).io.init_client_id).acquire_data.bits.payload
trackerList(i).io.x_init_data.valid := io.tiles(trackerList(i).io.init_client_id).acquire_data.valid trackerList(i).io.acquire_data.valid := io.tiles(trackerList(i).io.init_client_id).acquire_data.valid
trackerList(i).io.x_init_data_dep.bits := MuxLookup(trackerList(i).io.init_client_id, x_init_data_dep_list(0).io.deq.bits, (0 until conf.ln.nTiles).map( j => UFix(j) -> x_init_data_dep_list(j).io.deq.bits)) trackerList(i).io.acquire_data_dep.bits := MuxLookup(trackerList(i).io.init_client_id, acquire_data_dep_list(0).io.deq.bits, (0 until conf.ln.nTiles).map( j => UFix(j) -> acquire_data_dep_list(j).io.deq.bits))
trackerList(i).io.x_init_data_dep.valid := MuxLookup(trackerList(i).io.init_client_id, x_init_data_dep_list(0).io.deq.valid, (0 until conf.ln.nTiles).map( j => UFix(j) -> x_init_data_dep_list(j).io.deq.valid)) trackerList(i).io.acquire_data_dep.valid := MuxLookup(trackerList(i).io.init_client_id, acquire_data_dep_list(0).io.deq.valid, (0 until conf.ln.nTiles).map( j => UFix(j) -> acquire_data_dep_list(j).io.deq.valid))
} }
for( j <- 0 until conf.ln.nTiles ) { for( j <- 0 until conf.ln.nTiles ) {
val x_init = io.tiles(j).acquire val acquire = io.tiles(j).acquire
val x_init_data = io.tiles(j).acquire_data val acquire_data = io.tiles(j).acquire_data
val x_init_data_dep = x_init_data_dep_list(j).io.deq val acquire_data_dep = acquire_data_dep_list(j).io.deq
val x_abort = io.tiles(j).abort val x_abort = io.tiles(j).abort
init_arb.io.in(j).valid := (abort_state_arr(j) === s_idle) && !want_to_abort_arr(j) && x_init.valid init_arb.io.in(j).valid := (abort_state_arr(j) === s_idle) && !want_to_abort_arr(j) && acquire.valid
init_arb.io.in(j).bits.acquire := x_init.bits.payload init_arb.io.in(j).bits.acquire := acquire.bits.payload
init_arb.io.in(j).bits.client_id := UFix(j) init_arb.io.in(j).bits.client_id := UFix(j)
val pop_x_inits = trackerList.map(_.io.pop_x_init(j).toBool) val pop_acquires = trackerList.map(_.io.pop_acquire(j).toBool)
val do_pop = foldR(pop_x_inits)(_||_) val do_pop = foldR(pop_acquires)(_||_)
x_init_data_dep_list(j).io.enq.valid := do_pop && co.messageHasData(x_init.bits.payload) && (abort_state_arr(j) === s_idle) acquire_data_dep_list(j).io.enq.valid := do_pop && co.messageHasData(acquire.bits.payload) && (abort_state_arr(j) === s_idle)
x_init_data_dep_list(j).io.enq.bits.master_xact_id := OHToUFix(pop_x_inits) acquire_data_dep_list(j).io.enq.bits.master_xact_id := OHToUFix(pop_acquires)
x_init.ready := (x_abort.valid && x_abort.ready) || do_pop acquire.ready := (x_abort.valid && x_abort.ready) || do_pop
x_init_data.ready := (abort_state_arr(j) === s_abort_drain) || foldR(trackerList.map(_.io.pop_x_init_data(j).toBool))(_||_) acquire_data.ready := (abort_state_arr(j) === s_abort_drain) || foldR(trackerList.map(_.io.pop_acquire_data(j).toBool))(_||_)
x_init_data_dep.ready := foldR(trackerList.map(_.io.pop_x_init_dep(j).toBool))(_||_) acquire_data_dep.ready := foldR(trackerList.map(_.io.pop_acquire_dep(j).toBool))(_||_)
} }
alloc_arb.io.out.ready := init_arb.io.out.valid alloc_arb.io.out.ready := init_arb.io.out.valid
// Handle probe request generation // Handle probe request generation
// Must arbitrate for each request port // Must arbitrate for each request port
val p_req_arb_arr = List.fill(conf.ln.nTiles)((new Arbiter(NGLOBAL_XACTS)) { new Probe() }) val probe_arb_arr = List.fill(conf.ln.nTiles)((new Arbiter(NGLOBAL_XACTS)) { new Probe() })
for( j <- 0 until conf.ln.nTiles ) { for( j <- 0 until conf.ln.nTiles ) {
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
val t = trackerList(i).io val t = trackerList(i).io
p_req_arb_arr(j).io.in(i).bits := t.probe.bits probe_arb_arr(j).io.in(i).bits := t.probe.bits
p_req_arb_arr(j).io.in(i).valid := t.probe.valid && t.push_p_req(j) probe_arb_arr(j).io.in(i).valid := t.probe.valid && t.push_probe(j)
p_req_cnt_inc_arr(i)(j) := p_req_arb_arr(j).io.in(i).ready probe_cnt_inc_arr(i)(j) := probe_arb_arr(j).io.in(i).ready
} }
FIFOedLogicalNetworkIOWrapper(p_req_arb_arr(j).io.out) <> io.tiles(j).probe FIFOedLogicalNetworkIOWrapper(probe_arb_arr(j).io.out) <> io.tiles(j).probe
} }
} }
@ -538,8 +538,8 @@ class L2CoherenceAgent(implicit conf: CoherenceHubConfiguration) extends Coheren
implicit val lnConf = conf.ln implicit val lnConf = conf.ln
val co = conf.co val co = conf.co
val trackerList = (0 until NGLOBAL_XACTS).map(new XactTracker(_)) val trackerList = (0 until NGLOBAL_XACTS).map(new XactTracker(_))
val p_rep_data_dep_q = (new Queue(NGLOBAL_XACTS)){new TrackerDependency} // depth must >= NPRIMARY val release_data_dep_q = (new Queue(NGLOBAL_XACTS)){new TrackerDependency} // depth must >= NPRIMARY
val x_init_data_dep_q = (new Queue(NGLOBAL_XACTS)){new TrackerDependency} // depth should >= NPRIMARY val acquire_data_dep_q = (new Queue(NGLOBAL_XACTS)){new TrackerDependency} // depth should >= NPRIMARY
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
val t = trackerList(i) val t = trackerList(i)
@ -552,49 +552,49 @@ class L2CoherenceAgent(implicit conf: CoherenceHubConfiguration) extends Coheren
// Handle transaction initiation requests // Handle transaction initiation requests
// Only one allocation per cycle // Only one allocation per cycle
// Init requests may or may not have data // Init requests may or may not have data
val x_init = io.network.acquire val acquire = io.network.acquire
val x_init_data = io.network.acquire_data val acquire_data = io.network.acquire_data
val x_abort = io.network.abort val x_abort = io.network.abort
val x_dep_deq = x_init_data_dep_q.io.deq val x_dep_deq = acquire_data_dep_q.io.deq
val s_idle :: s_abort_drain :: s_abort_send :: Nil = Enum(3){ UFix() } val s_idle :: s_abort_drain :: s_abort_send :: Nil = Enum(3){ UFix() }
val abort_state = Reg(resetVal = s_idle) val abort_state = Reg(resetVal = s_idle)
val abort_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES))) val abort_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES)))
val any_conflict = trackerList.map(_.io.has_conflict).reduce(_||_) val any_conflict = trackerList.map(_.io.has_conflict).reduce(_||_)
val all_busy = trackerList.map(_.io.busy).reduce(_&&_) val all_busy = trackerList.map(_.io.busy).reduce(_&&_)
val want_to_abort = x_init.valid && (any_conflict || all_busy || (!x_init_data_dep_q.io.enq.ready && co.messageHasData(x_init.bits.payload))) val want_to_abort = acquire.valid && (any_conflict || all_busy || (!acquire_data_dep_q.io.enq.ready && co.messageHasData(acquire.bits.payload)))
val alloc_arb = (new Arbiter(NGLOBAL_XACTS)) { Bool() } val alloc_arb = (new Arbiter(NGLOBAL_XACTS)) { Bool() }
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
alloc_arb.io.in(i).valid := !trackerList(i).io.busy alloc_arb.io.in(i).valid := !trackerList(i).io.busy
trackerList(i).io.x_init.bits := x_init.bits trackerList(i).io.acquire.bits := acquire.bits
trackerList(i).io.x_init.valid := (abort_state === s_idle) && !want_to_abort && x_init.valid && alloc_arb.io.in(i).ready trackerList(i).io.acquire.valid := (abort_state === s_idle) && !want_to_abort && acquire.valid && alloc_arb.io.in(i).ready
trackerList(i).io.x_init_data.bits := x_init_data.bits trackerList(i).io.acquire_data.bits := acquire_data.bits
trackerList(i).io.x_init_data.valid := x_init_data.valid trackerList(i).io.acquire_data.valid := acquire_data.valid
trackerList(i).io.x_init_data_dep.bits := x_dep_deq.bits trackerList(i).io.acquire_data_dep.bits := x_dep_deq.bits
trackerList(i).io.x_init_data_dep.valid := x_dep_deq.valid trackerList(i).io.acquire_data_dep.valid := x_dep_deq.valid
} }
val pop_x_init = trackerList.map(_.io.x_init.ready).reduce(_||_) val pop_acquire = trackerList.map(_.io.acquire.ready).reduce(_||_)
x_init.ready := (x_abort.valid && x_abort.ready) || pop_x_init acquire.ready := (x_abort.valid && x_abort.ready) || pop_acquire
x_init_data.ready := (abort_state === s_abort_drain) || trackerList.map(_.io.x_init_data.ready).reduce(_||_) acquire_data.ready := (abort_state === s_abort_drain) || trackerList.map(_.io.acquire_data.ready).reduce(_||_)
x_init_data_dep_q.io.enq.valid := pop_x_init && co.messageHasData(x_init.bits.payload) && (abort_state === s_idle) acquire_data_dep_q.io.enq.valid := pop_acquire && co.messageHasData(acquire.bits.payload) && (abort_state === s_idle)
x_init_data_dep_q.io.enq.bits.master_xact_id := OHToUFix(trackerList.map(_.io.x_init.ready)) acquire_data_dep_q.io.enq.bits.master_xact_id := OHToUFix(trackerList.map(_.io.acquire.ready))
x_dep_deq.ready := trackerList.map(_.io.x_init_data_dep.ready).reduce(_||_) x_dep_deq.ready := trackerList.map(_.io.acquire_data_dep.ready).reduce(_||_)
alloc_arb.io.out.ready := x_init.valid alloc_arb.io.out.ready := acquire.valid
// Nack conflicting transaction init attempts // Nack conflicting transaction init attempts
x_abort.bits.header.dst := x_init.bits.header.src x_abort.bits.header.dst := acquire.bits.header.src
x_abort.bits.payload.client_xact_id := x_init.bits.payload.client_xact_id x_abort.bits.payload.client_xact_id := acquire.bits.payload.client_xact_id
x_abort.valid := Bool(false) x_abort.valid := Bool(false)
switch(abort_state) { switch(abort_state) {
is(s_idle) { is(s_idle) {
when(want_to_abort) { when(want_to_abort) {
abort_state := Mux( co.messageHasData(x_init.bits.payload), s_abort_drain, s_abort_send) abort_state := Mux( co.messageHasData(acquire.bits.payload), s_abort_drain, s_abort_send)
} }
} }
is(s_abort_drain) { // raises x_init_data.ready below is(s_abort_drain) { // raises acquire_data.ready below
when(x_init_data.valid) { when(acquire_data.valid) {
abort_cnt := abort_cnt + UFix(1) abort_cnt := abort_cnt + UFix(1)
when(abort_cnt === ~UFix(0, width = log2Up(REFILL_CYCLES))) { when(abort_cnt === ~UFix(0, width = log2Up(REFILL_CYCLES))) {
abort_state := s_abort_send abort_state := s_abort_send
@ -603,38 +603,38 @@ class L2CoherenceAgent(implicit conf: CoherenceHubConfiguration) extends Coheren
} }
is(s_abort_send) { // nothing is dequeued for now is(s_abort_send) { // nothing is dequeued for now
x_abort.valid := Bool(true) x_abort.valid := Bool(true)
when(x_abort.ready) { // raises x_init.ready when(x_abort.ready) { // raises acquire.ready
abort_state := s_idle abort_state := s_idle
} }
} }
} }
// Handle probe request generation // Handle probe request generation
val p_req_arb = (new Arbiter(NGLOBAL_XACTS)){(new LogicalNetworkIO){ new Probe }} val probe_arb = (new Arbiter(NGLOBAL_XACTS)){(new LogicalNetworkIO){ new Probe }}
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
val t = trackerList(i).io val t = trackerList(i).io
p_req_arb.io.in(i).bits := t.p_req.bits probe_arb.io.in(i).bits := t.probe.bits
p_req_arb.io.in(i).valid := t.p_req.valid probe_arb.io.in(i).valid := t.probe.valid
t.p_req.ready := p_req_arb.io.in(i).ready t.probe.ready := probe_arb.io.in(i).ready
} }
io.network.probe <> p_req_arb.io.out io.network.probe <> probe_arb.io.out
// Handle probe replies, which may or may not have data // Handle probe replies, which may or may not have data
val p_rep = io.network.release val release = io.network.release
val p_rep_data = io.network.release_data val release_data = io.network.release_data
val idx = p_rep.bits.payload.master_xact_id val idx = release.bits.payload.master_xact_id
p_rep.ready := trackerList.map(_.io.p_rep.ready).reduce(_||_) release.ready := trackerList.map(_.io.release.ready).reduce(_||_)
p_rep_data.ready := trackerList.map(_.io.p_rep_data.ready).reduce(_||_) release_data.ready := trackerList.map(_.io.release_data.ready).reduce(_||_)
p_rep_data_dep_q.io.enq.valid := p_rep.valid && co.messageHasData(p_rep.bits.payload) release_data_dep_q.io.enq.valid := release.valid && co.messageHasData(release.bits.payload)
p_rep_data_dep_q.io.enq.bits.master_xact_id := p_rep.bits.payload.master_xact_id release_data_dep_q.io.enq.bits.master_xact_id := release.bits.payload.master_xact_id
p_rep_data_dep_q.io.deq.ready := trackerList.map(_.io.p_rep_data_dep.ready).reduce(_||_) release_data_dep_q.io.deq.ready := trackerList.map(_.io.release_data_dep.ready).reduce(_||_)
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
trackerList(i).io.p_rep_data.valid := p_rep_data.valid trackerList(i).io.release_data.valid := release_data.valid
trackerList(i).io.p_rep_data.bits := p_rep_data.bits trackerList(i).io.release_data.bits := release_data.bits
trackerList(i).io.p_rep_data_dep.valid := p_rep_data_dep_q.io.deq.valid trackerList(i).io.release_data_dep.valid := release_data_dep_q.io.deq.valid
trackerList(i).io.p_rep_data_dep.bits := p_rep_data_dep_q.io.deq.bits trackerList(i).io.release_data_dep.bits := release_data_dep_q.io.deq.bits
trackerList(i).io.p_rep.valid := p_rep.valid && (idx === UFix(i)) trackerList(i).io.release.valid := release.valid && (idx === UFix(i))
trackerList(i).io.p_rep.bits := p_rep.bits trackerList(i).io.release.bits := release.bits
} }
// Reply to initial requestor // Reply to initial requestor
@ -659,11 +659,11 @@ class L2CoherenceAgent(implicit conf: CoherenceHubConfiguration) extends Coheren
} }
// Free finished transactions // Free finished transactions
val finish = io.network.grant_ack val ack = io.network.grant_ack
for( i <- 0 until NGLOBAL_XACTS ) { for( i <- 0 until NGLOBAL_XACTS ) {
trackerList(i).io.free := finish.valid && (finish.bits.payload.master_xact_id === UFix(i)) trackerList(i).io.free := ack.valid && (ack.bits.payload.master_xact_id === UFix(i))
} }
finish.ready := Bool(true) ack.ready := Bool(true)
// Create an arbiter for the one memory port // Create an arbiter for the one memory port
// We have to arbitrate between the different trackers' memory requests // We have to arbitrate between the different trackers' memory requests
@ -683,20 +683,20 @@ class XactTracker(id: Int)(implicit conf: CoherenceHubConfiguration) extends Com
val co = conf.co val co = conf.co
implicit val ln = conf.ln implicit val ln = conf.ln
val io = new Bundle { val io = new Bundle {
val x_init = (new FIFOIO){(new LogicalNetworkIO) { new Acquire }}.flip val acquire = (new FIFOIO){(new LogicalNetworkIO) { new Acquire }}.flip
val x_init_data = (new FIFOIO){(new LogicalNetworkIO) { new AcquireData }}.flip val acquire_data = (new FIFOIO){(new LogicalNetworkIO) { new AcquireData }}.flip
val p_rep = (new FIFOIO){(new LogicalNetworkIO) { new Release }}.flip val release = (new FIFOIO){(new LogicalNetworkIO) { new Release }}.flip
val p_rep_data = (new FIFOIO){(new LogicalNetworkIO) { new ReleaseData }}.flip val release_data = (new FIFOIO){(new LogicalNetworkIO) { new ReleaseData }}.flip
val free = Bool(INPUT) val free = Bool(INPUT)
val tile_incoherent = Bits(INPUT, conf.ln.nTiles) val tile_incoherent = Bits(INPUT, conf.ln.nTiles)
val p_rep_data_dep = (new FIFOIO) { new TrackerDependency }.flip val release_data_dep = (new FIFOIO) { new TrackerDependency }.flip
val x_init_data_dep = (new FIFOIO) { new TrackerDependency }.flip val acquire_data_dep = (new FIFOIO) { new TrackerDependency }.flip
val mem_resp = (new FIFOIO) { new MemResp }.flip val mem_resp = (new FIFOIO) { new MemResp }.flip
val mem_req_cmd = (new FIFOIO) { new MemReqCmd } val mem_req_cmd = (new FIFOIO) { new MemReqCmd }
val mem_req_data = (new FIFOIO) { new MemData } val mem_req_data = (new FIFOIO) { new MemData }
val mem_req_lock = Bool(OUTPUT) val mem_req_lock = Bool(OUTPUT)
val p_req = (new FIFOIO) {(new LogicalNetworkIO) { new Probe }} val probe = (new FIFOIO) {(new LogicalNetworkIO) { new Probe }}
val grant = (new FIFOIO) {(new LogicalNetworkIO) { new Grant }} val grant = (new FIFOIO) {(new LogicalNetworkIO) { new Grant }}
val busy = Bool(OUTPUT) val busy = Bool(OUTPUT)
val has_conflict = Bool(OUTPUT) val has_conflict = Bool(OUTPUT)
@ -708,32 +708,32 @@ class XactTracker(id: Int)(implicit conf: CoherenceHubConfiguration) extends Com
val init_client_id_ = Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles))) val init_client_id_ = Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles)))
//TODO: Will need id reg for merged release xacts //TODO: Will need id reg for merged release xacts
val init_sharer_cnt_ = Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles))) val init_sharer_cnt_ = Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles)))
val p_rep_count = if (conf.ln.nTiles == 1) UFix(0) else Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles))) val release_count = if (conf.ln.nTiles == 1) UFix(0) else Reg(resetVal = UFix(0, width = log2Up(conf.ln.nTiles)))
val p_req_flags = Reg(resetVal = Bits(0, width = conf.ln.nTiles)) val probe_flags = Reg(resetVal = Bits(0, width = conf.ln.nTiles))
val x_needs_read = Reg(resetVal = Bool(false)) val x_needs_read = Reg(resetVal = Bool(false))
val x_init_data_needs_write = Reg(resetVal = Bool(false)) val acquire_data_needs_write = Reg(resetVal = Bool(false))
val p_rep_data_needs_write = Reg(resetVal = Bool(false)) val release_data_needs_write = Reg(resetVal = Bool(false))
val x_w_mem_cmd_sent = Reg(resetVal = Bool(false)) val x_w_mem_cmd_sent = Reg(resetVal = Bool(false))
val p_w_mem_cmd_sent = Reg(resetVal = Bool(false)) val p_w_mem_cmd_sent = Reg(resetVal = Bool(false))
val mem_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES))) val mem_cnt = Reg(resetVal = UFix(0, width = log2Up(REFILL_CYCLES)))
val mem_cnt_next = mem_cnt + UFix(1) val mem_cnt_next = mem_cnt + UFix(1)
val mem_cnt_max = ~UFix(0, width = log2Up(REFILL_CYCLES)) val mem_cnt_max = ~UFix(0, width = log2Up(REFILL_CYCLES))
val p_req_initial_flags = Bits(width = conf.ln.nTiles) val probe_initial_flags = Bits(width = conf.ln.nTiles)
p_req_initial_flags := Bits(0) probe_initial_flags := Bits(0)
if (conf.ln.nTiles > 1) { if (conf.ln.nTiles > 1) {
// issue self-probes for uncached read xacts to facilitate I$ coherence // issue self-probes for uncached read xacts to facilitate I$ coherence
// TODO: this is hackish; figure out how to do it more systematically // TODO: this is hackish; figure out how to do it more systematically
val probe_self = co match { val probe_self = co match {
case u: CoherencePolicyWithUncached => u.isUncachedReadTransaction(io.x_init.bits.payload) case u: CoherencePolicyWithUncached => u.isUncachedReadTransaction(io.acquire.bits.payload)
case _ => Bool(false) case _ => Bool(false)
} }
val myflag = Mux(probe_self, Bits(0), UFixToOH(io.x_init.bits.header.src(log2Up(conf.ln.nTiles)-1,0))) val myflag = Mux(probe_self, Bits(0), UFixToOH(io.acquire.bits.header.src(log2Up(conf.ln.nTiles)-1,0)))
p_req_initial_flags := ~(io.tile_incoherent | myflag) probe_initial_flags := ~(io.tile_incoherent | myflag)
} }
val all_grants_require_acks = Bool(true) val all_grants_require_acks = Bool(true)
io.busy := state != s_idle io.busy := state != s_idle
io.has_conflict := co.isCoherenceConflict(xact.addr, io.x_init.bits.payload.addr) && (state != s_idle) io.has_conflict := co.isCoherenceConflict(xact.addr, io.acquire.bits.payload.addr) && (state != s_idle)
io.mem_req_cmd.valid := Bool(false) io.mem_req_cmd.valid := Bool(false)
io.mem_req_cmd.bits.rw := Bool(false) io.mem_req_cmd.bits.rw := Bool(false)
io.mem_req_cmd.bits.addr := xact.addr io.mem_req_cmd.bits.addr := xact.addr
@ -741,11 +741,11 @@ class XactTracker(id: Int)(implicit conf: CoherenceHubConfiguration) extends Com
io.mem_req_data.valid := Bool(false) io.mem_req_data.valid := Bool(false)
io.mem_req_data.bits.data := UFix(0) io.mem_req_data.bits.data := UFix(0)
io.mem_req_lock := Bool(false) io.mem_req_lock := Bool(false)
io.p_req.valid := Bool(false) io.probe.valid := Bool(false)
io.p_req.bits.payload.p_type := co.getProbeType(xact.a_type, UFix(0)) io.probe.bits.payload.p_type := co.getProbeType(xact.a_type, UFix(0))
io.p_req.bits.payload.master_xact_id := UFix(id) io.probe.bits.payload.master_xact_id := UFix(id)
io.p_req.bits.payload.addr := xact.addr io.probe.bits.payload.addr := xact.addr
io.p_req.bits.header.dst := UFix(0) io.probe.bits.header.dst := UFix(0)
io.grant.bits.payload.data := io.mem_resp.bits.data io.grant.bits.payload.data := io.mem_resp.bits.data
io.grant.bits.payload.g_type := co.getGrantType(xact.a_type, init_sharer_cnt_) io.grant.bits.payload.g_type := co.getGrantType(xact.a_type, init_sharer_cnt_)
io.grant.bits.payload.client_xact_id := xact.client_xact_id io.grant.bits.payload.client_xact_id := xact.client_xact_id
@ -753,70 +753,70 @@ class XactTracker(id: Int)(implicit conf: CoherenceHubConfiguration) extends Com
io.grant.bits.payload.require_ack := all_grants_require_acks io.grant.bits.payload.require_ack := all_grants_require_acks
io.grant.bits.header.dst := init_client_id_ io.grant.bits.header.dst := init_client_id_
io.grant.valid := (io.mem_resp.valid && (UFix(id) === io.mem_resp.bits.tag)) io.grant.valid := (io.mem_resp.valid && (UFix(id) === io.mem_resp.bits.tag))
io.x_init.ready := Bool(false) io.acquire.ready := Bool(false)
io.x_init_data.ready := Bool(false) io.acquire_data.ready := Bool(false)
io.x_init_data_dep.ready := Bool(false) io.acquire_data_dep.ready := Bool(false)
io.p_rep.ready := Bool(false) io.release.ready := Bool(false)
io.p_rep_data.ready := Bool(false) io.release_data.ready := Bool(false)
io.p_rep_data_dep.ready := Bool(false) io.release_data_dep.ready := Bool(false)
io.mem_resp.ready := io.grant.ready io.mem_resp.ready := io.grant.ready
switch (state) { switch (state) {
is(s_idle) { is(s_idle) {
when( io.x_init.valid ) { when( io.acquire.valid ) {
xact := io.x_init.bits.payload xact := io.acquire.bits.payload
init_client_id_ := io.x_init.bits.header.src init_client_id_ := io.acquire.bits.header.src
init_sharer_cnt_ := UFix(conf.ln.nTiles) // TODO: Broadcast only init_sharer_cnt_ := UFix(conf.ln.nTiles) // TODO: Broadcast only
x_init_data_needs_write := co.messageHasData(io.x_init.bits.payload) acquire_data_needs_write := co.messageHasData(io.acquire.bits.payload)
x_needs_read := co.needsMemRead(io.x_init.bits.payload.a_type, UFix(0)) x_needs_read := co.needsMemRead(io.acquire.bits.payload.a_type, UFix(0))
p_req_flags := p_req_initial_flags probe_flags := probe_initial_flags
mem_cnt := UFix(0) mem_cnt := UFix(0)
p_w_mem_cmd_sent := Bool(false) p_w_mem_cmd_sent := Bool(false)
x_w_mem_cmd_sent := Bool(false) x_w_mem_cmd_sent := Bool(false)
io.x_init.ready := Bool(true) io.acquire.ready := Bool(true)
if(conf.ln.nTiles > 1) { if(conf.ln.nTiles > 1) {
p_rep_count := PopCount(p_req_initial_flags) release_count := PopCount(probe_initial_flags)
state := Mux(p_req_initial_flags.orR, s_probe, s_mem) state := Mux(probe_initial_flags.orR, s_probe, s_mem)
} else state := s_mem } else state := s_mem
} }
} }
is(s_probe) { is(s_probe) {
val curr_p_id = PriorityEncoder(p_req_flags) val curr_p_id = PriorityEncoder(probe_flags)
when(p_req_flags.orR) { when(probe_flags.orR) {
io.p_req.valid := Bool(true) io.probe.valid := Bool(true)
io.p_req.bits.header.dst := curr_p_id io.probe.bits.header.dst := curr_p_id
} }
when(io.p_req.ready) { when(io.probe.ready) {
p_req_flags := p_req_flags & ~(UFixToOH(curr_p_id)) probe_flags := probe_flags & ~(UFixToOH(curr_p_id))
} }
when(io.p_rep.valid) { when(io.release.valid) {
io.p_rep.ready := Bool(true) io.release.ready := Bool(true)
if(conf.ln.nTiles > 1) p_rep_count := p_rep_count - UFix(1) if(conf.ln.nTiles > 1) release_count := release_count - UFix(1)
when(p_rep_count === UFix(1)) { when(release_count === UFix(1)) {
state := s_mem state := s_mem
} }
p_rep_data_needs_write := co.messageHasData(io.p_rep.bits.payload) release_data_needs_write := co.messageHasData(io.release.bits.payload)
} }
} }
is(s_mem) { is(s_mem) {
when (p_rep_data_needs_write) { when (release_data_needs_write) {
doMemReqWrite(io.mem_req_cmd, doMemReqWrite(io.mem_req_cmd,
io.mem_req_data, io.mem_req_data,
io.mem_req_lock, io.mem_req_lock,
io.p_rep_data, io.release_data,
p_rep_data_needs_write, release_data_needs_write,
p_w_mem_cmd_sent, p_w_mem_cmd_sent,
io.p_rep_data_dep.ready, io.release_data_dep.ready,
io.p_rep_data_dep.valid && (io.p_rep_data_dep.bits.master_xact_id === UFix(id))) io.release_data_dep.valid && (io.release_data_dep.bits.master_xact_id === UFix(id)))
} . elsewhen(x_init_data_needs_write) { } . elsewhen(acquire_data_needs_write) {
doMemReqWrite(io.mem_req_cmd, doMemReqWrite(io.mem_req_cmd,
io.mem_req_data, io.mem_req_data,
io.mem_req_lock, io.mem_req_lock,
io.x_init_data, io.acquire_data,
x_init_data_needs_write, acquire_data_needs_write,
x_w_mem_cmd_sent, x_w_mem_cmd_sent,
io.x_init_data_dep.ready, io.acquire_data_dep.ready,
io.x_init_data_dep.valid && (io.x_init_data_dep.bits.master_xact_id === UFix(id))) io.acquire_data_dep.valid && (io.acquire_data_dep.bits.master_xact_id === UFix(id)))
} . elsewhen (x_needs_read) { } . elsewhen (x_needs_read) {
doMemReqRead(io.mem_req_cmd, x_needs_read) doMemReqRead(io.mem_req_cmd, x_needs_read)
} . otherwise { } . otherwise {