riscv/rocket-chip
1
0
Fork 0
Code Releases Activity

NASTI -> TL converter also uses ID mapper

Browse Source
This commit is contained in:
Howard Mao 2016-07-01 18:11:29 -07:00
parent 39bee5198d
commit caa9ca24b9
1 changed files with 83 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

133
uncore/src/main/scala/converters/Nasti.scala
View File

@ -6,62 +6,62 @@ import uncore.tilelink._
import uncore.constants._
import cde.Parameters
class NastiIOTileLinkIOIdMapper(implicit val p: Parameters) extends Module
with HasTileLinkParameters with HasNastiParameters {
class IdMapper(val inIdBits: Int, val outIdBits: Int)
(implicit val p: Parameters) extends Module {
val io = new Bundle {
val req = new Bundle {
val valid = Bool(INPUT)
val ready = Bool(OUTPUT)
val tl_id = UInt(INPUT, tlClientXactIdBits)
val nasti_id = UInt(OUTPUT, nastiXIdBits)
val in_id = UInt(INPUT, inIdBits)
val out_id = UInt(OUTPUT, outIdBits)
}
val resp = new Bundle {
val valid = Bool(INPUT)
val matches = Bool(OUTPUT)
val nasti_id = UInt(INPUT, nastiXIdBits)
val tl_id = UInt(OUTPUT, tlClientXactIdBits)
val out_id = UInt(INPUT, inIdBits)
val in_id = UInt(OUTPUT, outIdBits)
}
}
val tlMaxXacts = tlMaxClientXacts * tlMaxClientsPerPort
val maxInXacts = 1 << inIdBits
if (tlClientXactIdBits <= nastiXIdBits) {
if (inIdBits <= outIdBits) {
io.req.ready := Bool(true)
io.req.nasti_id := io.req.tl_id
io.req.out_id := io.req.in_id
io.resp.matches := Bool(true)
io.resp.tl_id := io.resp.nasti_id
} else if (nastiXIdBits <= 2) {
val nQueues = 1 << nastiXIdBits
val entriesPerQueue = (tlMaxXacts - 1) / nQueues + 1
val (req_nasti_id, req_nasti_flip) = Counter(io.req.valid && io.req.ready, nQueues)
io.resp.in_id := io.resp.out_id
} else if (outIdBits <= 2) {
val nQueues = 1 << outIdBits
val entriesPerQueue = (maxInXacts - 1) / nQueues + 1
val (req_out_id, req_out_flip) = Counter(io.req.valid && io.req.ready, nQueues)
io.req.ready := Bool(false)
io.resp.matches := Bool(false)
io.resp.tl_id := UInt(0)
io.req.nasti_id := req_nasti_id
io.resp.in_id := UInt(0)
io.req.out_id := req_out_id
for (i <- 0 until nQueues) {
val queue = Module(new Queue(UInt(width = tlClientXactIdBits), entriesPerQueue))
queue.io.enq.valid := io.req.valid && req_nasti_id === UInt(i)
queue.io.enq.bits := io.req.tl_id
when (req_nasti_id === UInt(i)) { io.req.ready := queue.io.enq.ready }
val queue = Module(new Queue(UInt(width = inIdBits), entriesPerQueue))
queue.io.enq.valid := io.req.valid && req_out_id === UInt(i)
queue.io.enq.bits := io.req.in_id
when (req_out_id === UInt(i)) { io.req.ready := queue.io.enq.ready }
queue.io.deq.ready := io.resp.valid && io.resp.nasti_id === UInt(i)
when (io.resp.nasti_id === UInt(i)) {
queue.io.deq.ready := io.resp.valid && io.resp.out_id === UInt(i)
when (io.resp.out_id === UInt(i)) {
io.resp.matches := queue.io.deq.valid
io.resp.tl_id := queue.io.deq.bits
io.resp.in_id := queue.io.deq.bits
}
}
} else {
val maxNastiId = 1 << nastiXIdBits
val (req_nasti_id, req_nasti_flip) = Counter(io.req.valid && io.req.ready, maxNastiId)
val maxOutId = 1 << outIdBits
val (req_out_id, req_nasti_flip) = Counter(io.req.valid && io.req.ready, maxOutId)
val roq = Module(new ReorderQueue(
UInt(width = tlClientXactIdBits), nastiXIdBits, tlMaxXacts))
UInt(width = inIdBits), outIdBits, maxInXacts))
roq.io.enq.valid := io.req.valid
roq.io.enq.bits.data := io.req.tl_id
roq.io.enq.bits.tag := req_nasti_id
roq.io.enq.bits.data := io.req.in_id
roq.io.enq.bits.tag := req_out_id
io.req.ready := roq.io.enq.ready
io.req.nasti_id := req_nasti_id
io.req.out_id := req_out_id
roq.io.deq.valid := io.resp.valid
roq.io.deq.tag := io.resp.nasti_id
io.resp.tl_id := roq.io.deq.data
roq.io.deq.tag := io.resp.out_id
io.resp.in_id := roq.io.deq.data
io.resp.matches := roq.io.deq.matches
}
}
@ -109,8 +109,8 @@ class NastiIOTileLinkIOConverter(implicit p: Parameters) extends TLModule()(p)
val roq = Module(new ReorderQueue(
new NastiIOTileLinkIOConverterInfo, nastiRIdBits, tlMaxXacts))
val get_id_mapper = Module(new NastiIOTileLinkIOIdMapper)
val put_id_mapper = Module(new NastiIOTileLinkIOIdMapper)
val get_id_mapper = Module(new IdMapper(tlClientXactIdBits, nastiXIdBits))
val put_id_mapper = Module(new IdMapper(tlClientXactIdBits, nastiXIdBits))
val get_id_ready = get_id_mapper.io.req.ready
val put_id_mask = is_subblock || io.tl.acquire.bits.addr_beat === UInt(0)
@ -145,19 +145,19 @@ class NastiIOTileLinkIOConverter(implicit p: Parameters) extends TLModule()(p)
roq.io.deq.tag := io.nasti.r.bits.id
get_id_mapper.io.req.valid := get_helper.fire(get_id_ready)
get_id_mapper.io.req.tl_id := io.tl.acquire.bits.client_xact_id
get_id_mapper.io.req.in_id := io.tl.acquire.bits.client_xact_id
get_id_mapper.io.resp.valid := io.nasti.r.fire() && io.nasti.r.bits.last
get_id_mapper.io.resp.nasti_id := io.nasti.r.bits.id
get_id_mapper.io.resp.out_id := io.nasti.r.bits.id
put_id_mapper.io.req.valid := put_helper.fire(put_id_ready, put_id_mask)
put_id_mapper.io.req.tl_id := io.tl.acquire.bits.client_xact_id
put_id_mapper.io.req.in_id := io.tl.acquire.bits.client_xact_id
put_id_mapper.io.resp.valid := io.nasti.b.fire()
put_id_mapper.io.resp.nasti_id := io.nasti.b.bits.id
put_id_mapper.io.resp.out_id := io.nasti.b.bits.id
// Decompose outgoing TL Acquires into Nasti address and data channels
io.nasti.ar.valid := get_helper.fire(io.nasti.ar.ready)
io.nasti.ar.bits := NastiReadAddressChannel(
id = get_id_mapper.io.req.nasti_id,
id = get_id_mapper.io.req.out_id,
addr = io.tl.acquire.bits.full_addr(),
size = Mux(is_subblock,
opSizeToXSize(io.tl.acquire.bits.op_size()),
@ -186,14 +186,14 @@ class NastiIOTileLinkIOConverter(implicit p: Parameters) extends TLModule()(p)
io.nasti.aw.valid := put_helper.fire(aw_ready, !w_inflight)
io.nasti.aw.bits := NastiWriteAddressChannel(
id = put_id_mapper.io.req.nasti_id,
id = put_id_mapper.io.req.out_id,
addr = io.tl.acquire.bits.full_addr()| put_offset,
size = put_size,
len = Mux(is_multibeat, UInt(tlDataBeats - 1), UInt(0)))
io.nasti.w.valid := put_helper.fire(io.nasti.w.ready)
io.nasti.w.bits := NastiWriteDataChannel(
id = put_id_mapper.io.req.nasti_id,
id = put_id_mapper.io.req.out_id,
data = io.tl.acquire.bits.data,
strb = io.tl.acquire.bits.wmask(),
last = tl_wrap_out || (io.tl.acquire.fire() && is_subblock))
@ -222,7 +222,7 @@ class NastiIOTileLinkIOConverter(implicit p: Parameters) extends TLModule()(p)
is_builtin_type = Bool(true),
g_type = Mux(roq.io.deq.data.subblock,
Grant.getDataBeatType, Grant.getDataBlockType),
client_xact_id = get_id_mapper.io.resp.tl_id,
client_xact_id = get_id_mapper.io.resp.in_id,
manager_xact_id = UInt(0),
addr_beat = Mux(roq.io.deq.data.subblock, roq.io.deq.data.addr_beat, tl_cnt_in),
data = io.nasti.r.bits.data)
@ -237,7 +237,7 @@ class NastiIOTileLinkIOConverter(implicit p: Parameters) extends TLModule()(p)
gnt_arb.io.in(1).bits := Grant(
is_builtin_type = Bool(true),
g_type = Grant.putAckType,
client_xact_id = put_id_mapper.io.resp.tl_id,
client_xact_id = put_id_mapper.io.resp.in_id,
manager_xact_id = UInt(0),
addr_beat = UInt(0),
data = Bits(0))
@ -260,6 +260,7 @@ class TileLinkIONastiIOConverter(implicit p: Parameters) extends TLModule()(p)
private val blockOffset = tlByteAddrBits + tlBeatAddrBits
val aw_req = Reg(new NastiWriteAddressChannel)
val w_tl_id = Reg(io.tl.acquire.bits.client_xact_id)
def is_singlebeat(chan: NastiAddressChannel): Bool =
chan.len === UInt(0)
@ -307,9 +308,12 @@ class TileLinkIONastiIOConverter(implicit p: Parameters) extends TLModule()(p)
"NASTI write transaction cannot convert to TileLInk")
val put_count = Reg(init = UInt(0, tlBeatAddrBits))
val get_id_mapper = Module(new IdMapper(nastiXIdBits, tlClientXactIdBits))
val put_id_mapper = Module(new IdMapper(nastiXIdBits, tlClientXactIdBits))
when (io.nasti.aw.fire()) {
aw_req := io.nasti.aw.bits
w_tl_id := put_id_mapper.io.req.out_id
state := s_put
}
@ -323,10 +327,10 @@ class TileLinkIONastiIOConverter(implicit p: Parameters) extends TLModule()(p)
val get_acquire = Mux(is_multibeat(io.nasti.ar.bits),
GetBlock(
client_xact_id = io.nasti.ar.bits.id,
client_xact_id = get_id_mapper.io.req.out_id,
addr_block = nasti_addr_block(io.nasti.ar.bits)),
Get(
client_xact_id = io.nasti.ar.bits.id,
client_xact_id = get_id_mapper.io.req.out_id,
addr_block = nasti_addr_block(io.nasti.ar.bits),
addr_beat = nasti_addr_beat(io.nasti.ar.bits),
addr_byte = nasti_addr_byte(io.nasti.ar.bits),
@ -335,39 +339,62 @@ class TileLinkIONastiIOConverter(implicit p: Parameters) extends TLModule()(p)
val put_acquire = Mux(is_multibeat(aw_req),
PutBlock(
client_xact_id = aw_req.id,
client_xact_id = w_tl_id,
addr_block = nasti_addr_block(aw_req),
addr_beat = put_count,
data = io.nasti.w.bits.data,
wmask = Some(io.nasti.w.bits.strb)),
Put(
client_xact_id = aw_req.id,
client_xact_id = w_tl_id,
addr_block = nasti_addr_block(aw_req),
addr_beat = nasti_addr_beat(aw_req),
data = io.nasti.w.bits.data,
wmask = Some(nasti_wmask(aw_req, io.nasti.w.bits))))
val get_helper = DecoupledHelper(
io.nasti.ar.valid,
get_id_mapper.io.req.ready,
io.tl.acquire.ready)
get_id_mapper.io.req.valid := get_helper.fire(
get_id_mapper.io.req.ready, state === s_idle)
get_id_mapper.io.req.in_id := io.nasti.ar.bits.id
get_id_mapper.io.resp.out_id := io.tl.grant.bits.client_xact_id
get_id_mapper.io.resp.valid := io.nasti.r.fire() && io.nasti.r.bits.last
val aw_ok = (state === s_idle && !io.nasti.ar.valid)
put_id_mapper.io.req.valid := aw_ok && io.nasti.aw.valid
put_id_mapper.io.req.in_id := io.nasti.aw.bits.id
put_id_mapper.io.resp.out_id := io.tl.grant.bits.client_xact_id
put_id_mapper.io.resp.valid := io.nasti.b.fire()
io.tl.acquire.bits := Mux(state === s_put, put_acquire, get_acquire)
io.tl.acquire.valid := (state === s_idle && io.nasti.ar.valid) ||
io.tl.acquire.valid := get_helper.fire(io.tl.acquire.ready, state === s_idle) ||
(state === s_put && io.nasti.w.valid)
io.nasti.ar.ready := (state === s_idle && io.tl.acquire.ready)
io.nasti.aw.ready := (state === s_idle && !io.nasti.ar.valid)
io.nasti.ar.ready := get_helper.fire(io.nasti.ar.valid, state === s_idle)
io.nasti.aw.ready := aw_ok && put_id_mapper.io.req.ready
io.nasti.w.ready := (state === s_put && io.tl.acquire.ready)
val nXacts = tlMaxClientXacts * tlMaxClientsPerPort
io.nasti.b.valid := io.tl.grant.valid && tl_b_grant(io.tl.grant.bits)
io.nasti.b.bits := NastiWriteResponseChannel(
id = io.tl.grant.bits.client_xact_id)
id = put_id_mapper.io.req.out_id)
assert(!io.nasti.b.valid || put_id_mapper.io.resp.matches,
"Put ID does not match")
io.nasti.r.valid := io.tl.grant.valid && !tl_b_grant(io.tl.grant.bits)
io.nasti.r.bits := NastiReadDataChannel(
id = io.tl.grant.bits.client_xact_id,
id = get_id_mapper.io.req.out_id,
data = io.tl.grant.bits.data,
last = tl_last(io.tl.grant.bits))
assert(!io.nasti.r.valid || get_id_mapper.io.resp.matches,
"Get ID does not match")
io.tl.grant.ready := Mux(tl_b_grant(io.tl.grant.bits),
io.nasti.b.ready, io.nasti.r.ready)
}