riscv/rocket-chip
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queue data type is now templated

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This commit is contained in:
Andrew Waterman 2011-11-30 18:07:57 -08:00
parent 11f0e3daf4
commit 8f3927fdfa
2 changed files with 28 additions and 24 deletions
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2
rocket/src/main/scala/icache_prefetch.scala
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@ -23,7 +23,7 @@ class ioIPrefetcher extends Bundle() {
class rocketIPrefetcher extends Component() {
val io = new ioIPrefetcher();
val pdq = new queueSimplePF(128, 4, 2);
val pdq = (new queueSimplePF(4)) { Bits(width = 128) };
val s_invalid :: s_valid :: s_refilling :: s_req_wait :: s_resp_wait :: s_bad_resp_wait :: Nil = Enum(6) { UFix() };
val state = Reg(resetVal = s_invalid);

48
rocket/src/main/scala/queues.scala
View File

@ -3,6 +3,7 @@ package queues
import Chisel._
import Node._;
import scala.math._;
class ioQueueCtrl(addr_sz: Int) extends Bundle()
{
@ -16,8 +17,9 @@ class ioQueueCtrl(addr_sz: Int) extends Bundle()
val raddr = UFix(addr_sz, 'output);
}
class queueCtrl(entries: Int, addr_sz: Int) extends Component
class queueCtrl(entries: Int) extends Component
{
val addr_sz = ceil(log(entries)/log(2)).toInt
override val io = new ioQueueCtrl(addr_sz);
// Enqueue and dequeue pointers
@ -79,28 +81,28 @@ class queueCtrl(entries: Int, addr_sz: Int) extends Component
full <== full_next;
}
class ioQueueSimplePF(data_sz: Int) extends Bundle()
class ioQueueSimplePF[T <: Data]()(data: => T) extends Bundle()
{
val q_reset = Bool('input);
val enq_val = Bool('input);
val enq_rdy = Bool('output);
val deq_val = Bool('output);
val deq_rdy = Bool('input);
val enq_bits = Bits(data_sz, 'input);
val deq_bits = Bits(data_sz, 'output);
val enq_bits = data.asInput;
val deq_bits = data.asOutput;
}
class queueSimplePF(data_sz: Int, entries: Int, addr_sz: Int) extends Component
class queueSimplePF[T <: Data](entries: Int)(data: => T) extends Component
{
override val io = new ioQueueSimplePF(data_sz);
val ctrl = new queueCtrl(entries, addr_sz);
override val io = new ioQueueSimplePF()(data);
val ctrl = new queueCtrl(entries);
ctrl.io.q_reset ^^ io.q_reset;
ctrl.io.deq_val ^^ io.deq_val;
ctrl.io.enq_rdy ^^ io.enq_rdy;
ctrl.io.enq_val ^^ io.enq_val;
ctrl.io.deq_rdy ^^ io.deq_rdy;
val ram = Mem(entries, ctrl.io.wen, ctrl.io.waddr, io.enq_bits);
io.deq_bits := ram(ctrl.io.raddr);
ram.read(ctrl.io.raddr) ^^ io.deq_bits;
}
// TODO: SHOULD USE INHERITANCE BUT BREAKS INTROSPECTION CODE
@ -117,8 +119,9 @@ class ioQueueCtrlFlow(addr_sz: Int) extends Bundle() /* IOqueueCtrl */
val flowthru = Bool('output);
}
class queueCtrlFlow(entries: Int, addr_sz: Int) extends Component
class queueCtrlFlow(entries: Int) extends Component
{
val addr_sz = ceil(log(entries)/log(2)).toInt
override val io = new ioQueueCtrlFlow(addr_sz);
// Enqueue and dequeue pointers
@ -175,39 +178,40 @@ class queueCtrlFlow(entries: Int, addr_sz: Int) extends Component
full <== full_next;
}
class ioQueueDpathFlow(data_sz: Int, addr_sz: Int) extends Bundle()
class ioQueueDpathFlow[T <: Data](addr_sz: Int)(data: => T) extends Bundle()
{
val wen = Bool('input);
val flowthru = Bool('input);
val deq_bits = Bits(data_sz, 'output);
val enq_bits = Bits(data_sz, 'input);
val deq_bits = data.asOutput;
val enq_bits = data.asInput;
val waddr = UFix(addr_sz, 'input);
val raddr = UFix(addr_sz, 'input);
}
class queueDpathFlow(data_sz: Int, entries: Int, addr_sz: Int) extends Component
class queueDpathFlow[T <: Data](entries: Int)(data: => T) extends Component
{
override val io = new ioQueueDpathFlow(data_sz, addr_sz);
val addr_sz = ceil(log(entries)/log(2)).toInt
override val io = new ioQueueDpathFlow(addr_sz)(data);
val ram = Mem(entries, io.wen, io.waddr, io.enq_bits);
val rout = ram(io.raddr);
io.deq_bits := Mux(io.flowthru, io.enq_bits, rout);
Mux(io.flowthru, io.enq_bits, rout) ^^ io.deq_bits;
}
class ioQueueFlowPF(data_sz: Int) extends Bundle()
class ioQueueFlowPF[T <: Data](data: => T) extends Bundle()
{
val enq_val = Bool('input);
val enq_rdy = Bool('output);
val enq_bits = Bits(data_sz, 'input);
val enq_bits = data.asInput;
val deq_val = Bool('output);
val deq_rdy = Bool('input);
val deq_bits = Bits(data_sz, 'output);
val deq_bits = data.asOutput;
}
class queueFlowPF(data_sz: Int, entries: Int, addr_sz: Int) extends Component
class queueFlowPF[T <: Data](entries: Int)(data: => T) extends Component
{
override val io = new ioQueueFlowPF(data_sz);
val ctrl = new queueCtrlFlow(entries, addr_sz);
val dpath = new queueDpathFlow(data_sz, entries, addr_sz);
override val io = new ioQueueFlowPF(data);
val ctrl = new queueCtrlFlow(entries);
val dpath = new queueDpathFlow(entries)(data);
ctrl.io.deq_rdy ^^ io.deq_rdy;
ctrl.io.wen <> dpath.io.wen;