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package firrtlTests
import firrtl._
import firrtl.passes._
import Annotations._
class ReplSeqMemSpec extends SimpleTransformSpec {
def transforms (writer: java.io.Writer) = Seq(
new Chisel3ToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
new HighFirrtlToMiddleFirrtl(),
new passes.InferReadWrite(TransID(-1)),
new passes.ReplSeqMem(TransID(-2)),
new MiddleFirrtlToLowFirrtl(),
new EmitFirrtl(writer)
)
"ReplSeqMem" should "generate blackbox wrappers (no wmask, r, w ports)" in {
val input = """
circuit sram6t :
module sram6t :
input clk : Clock
input reset : UInt<1>
output io : {flip en : UInt<1>, flip wen : UInt<1>, flip waddr : UInt<8>, flip wdata : UInt<32>, flip raddr : UInt<8>, rdata : UInt<32>}
io is invalid
smem mem : UInt<32>[128]
node T_0 = eq(io.wen, UInt<1>("h00"))
node T_1 = and(io.en, T_0)
wire T_2 : UInt
T_2 is invalid
when T_1 :
T_2 <= io.raddr
read mport T_3 = mem[T_2], clk
io.rdata <= T_3
node T_4 = and(io.en, io.wen)
when T_4 :
write mport T_5 = mem[io.waddr], clk
T_5 <= io.wdata
""".stripMargin
val check = """
circuit sram6t :
module sram6t :
input clk : Clock
input reset : UInt<1>
input io_en : UInt<1>
input io_wen : UInt<1>
input io_waddr : UInt<8>
input io_wdata : UInt<32>
input io_raddr : UInt<8>
output io_rdata : UInt<32>
inst mem of mem
node T_0 = eq(io_wen, UInt<1>("h0"))
node T_1 = and(io_en, T_0)
wire T_2 : UInt<8>
node GEN_0 = validif(T_1, io_raddr)
node GEN_1 = mux(T_1, UInt<1>("h1"), UInt<1>("h0"))
node T_4 = and(io_en, io_wen)
node GEN_2 = validif(T_4, io_waddr)
node GEN_3 = validif(T_4, clk)
node GEN_4 = mux(T_4, UInt<1>("h1"), UInt<1>("h0"))
node GEN_5 = validif(T_4, io_wdata)
node GEN_6 = mux(T_4, UInt<1>("h1"), UInt<1>("h0"))
io_rdata <= mem.R0_data
mem.R0_addr <= bits(T_2, 6, 0)
mem.R0_clk <= clk
mem.R0_en <= GEN_1
mem.W0_addr <= bits(GEN_2, 6, 0)
mem.W0_clk <= GEN_3
mem.W0_en <= GEN_4
mem.W0_data <= GEN_5
T_2 <= GEN_0
extmodule mem_ext :
input R0_addr : UInt<7>
input R0_en : UInt<1>
input R0_clk : Clock
output R0_data : UInt<32>
input W0_addr : UInt<7>
input W0_en : UInt<1>
input W0_clk : Clock
input W0_data : UInt<32>
module mem :
input R0_addr : UInt<7>
input R0_en : UInt<1>
input R0_clk : Clock
output R0_data : UInt<32>
input W0_addr : UInt<7>
input W0_en : UInt<1>
input W0_clk : Clock
input W0_data : UInt<32>
inst mem_ext of mem_ext
mem_ext.R0_addr <= R0_addr
mem_ext.R0_en <= R0_en
mem_ext.R0_clk <= R0_clk
R0_data <= bits(mem_ext.R0_data, 31, 0)
mem_ext.W0_addr <= W0_addr
mem_ext.W0_en <= W0_en
mem_ext.W0_clk <= W0_clk
mem_ext.W0_data <= W0_data
""".stripMargin
val checkConf = """name mem_ext depth 128 width 32 ports write,read """
def read(file: String) = scala.io.Source.fromFile(file).getLines.mkString("\n")
val confLoc = "ReplSeqMemTests.confTEMP"
val aMap = AnnotationMap(Seq(ReplSeqMemAnnotation("-c:sram6t:-o:"+confLoc, TransID(-2))))
val writer = new java.io.StringWriter
execute(writer, aMap, input, check)
val confOut = read(confLoc)
require(confOut==checkConf,"Conf file incorrect!")
(new java.io.File(confLoc)).delete()
}
}
// TODO: make more checks
// readwrite vs. no readwrite
// redundant memories (multiple instances of the same type of memory)
// mask + no mask
// conf
|
