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LSU clock domain skeleton

This commit is contained in:
Jahanzaib-Rasheed 2020-09-10 14:45:14 +05:00
parent aa4da62dd9
commit f60e035eeb
2 changed files with 55 additions and 36 deletions
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17
src/main/scala/lsu/el2_lsu_bus_intf.scala
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@ -1,7 +1,11 @@
package lsu
import chisel3._
import chisel3.util._
class el2_lsu_bus_intf extends Module
import lib._
import include._
import snapshot._
class el2_lsu_lsc_ctl extends Module
{
val io = IO (new Bundle {
//val clk = Input(Clock()) //implicit
@ -108,10 +112,10 @@ class el2_lsu_bus_intf extends Module
val lsu_axi_rready = Output(UInt(1.W))
val lsu_axi_rid = Input(UInt(pt1.LSU_BUS_TAG.W))
val lsu_axi_rdata = Input(UInt(64.W))
val lsu_axi_rresp = Input(UInt(2.W))
val lsu_axi_rlast = Input(UInt(1.W))
val lsu_axi_rresp = Intput(UInt(2.W))
val lsu_axi_rlast = Intput(UInt(1.W))
val lsu_bus_clk_en = Input(UInt(1.W))
val lsu_bus_clk_en = Intput(UInt(1.W))
})
val lsu_pkt_m = new el2_lsu_pkt_t()
@ -178,6 +182,3 @@ class el2_lsu_bus_intf extends Module
}
object busIntfMain extends App {
println(chisel3.Driver.emitVerilog(new el2_lsu_bus_intf))
}

74
src/main/scala/lsu/el2_lsu_clkdomain.scala
View File

@ -1,3 +1,5 @@
package lsu
import chisel3._
import chisel3.util._
import lib._
@ -77,7 +79,7 @@ class el2_lsu_clkdomain extends Module {
// Clock Enable Logic
//-------------------------------------------------------------------------------------------
lsu_c1_d_clken := lsu_p.valid | io.dma_dccm_req | io.clk_override
lsu_c1_d_clken := lsu_p.valid | io.dma_dccm_req | io.clk_override
lsu_c1_m_clken := lsu_pkt_d.valid | lsu_c1_d_clken_q | io.clk_override
lsu_c1_r_clken := lsu_pkt_m.valid | lsu_c1_m_clken_q | io.clk_override
@ -86,42 +88,58 @@ class el2_lsu_clkdomain extends Module {
lsu_store_c1_m_clken := ((lsu_c1_m_clken & lsu_pkt_d.store) | io.clk_override)
lsu_store_c1_r_clken := ((lsu_c1_r_clken & lsu_pkt_m.store) | io.clk_override)
lsu_stbuf_c1_clken := io.ldst_stbuf_reqvld_r | io.stbuf_reqvld_any | io.stbuf_reqvld_flushed_any | io.clk_override
lsu_bus_ibuf_c1_clken := io.lsu_busreq_r | io.clk_override
lsu_bus_obuf_c1_clken := (io.lsu_bus_buffer_pend_any | io.lsu_busreq_r | io.clk_override) & io.lsu_bus_clk_en
lsu_bus_buf_c1_clken := ~io.lsu_bus_buffer_empty_any | io.lsu_busreq_r | io.clk_override
lsu_stbuf_c1_clken := st_stbu_reqvld_r | io.stbuf_reqvld_any | io.stbuf_reqvld_flushed_any | io.clk_override
lsu_bus_ibuf_c1_clken := io.lsu_busreq_r | io.clk_override
lsu_bus_obuf_c1_clken := (io.lsu_bus_buffer_pend_any | io.lsu_busreq_r | io.clk_override) & io.lsu_bus_clk_en
lsu_bus_buf_c1_clken := ~io.lsu_bus_buffer_empty_any | io.lsu_busreq_r | io.clk_override
lsu_free_c1_clken := (lsu_p.valid | lsu_pkt_d.valid | lsu_pkt_m.valid | lsu_pkt_r.valid) | ~io.lsu_bus_buffer_empty_any | ~io.lsu_stbuf_empty_any | io.clk_override
lsu_free_c2_clken := lsu_free_c1_clken | lsu_free_c1_clken_q | io.clk_override
/*
// Flops
rvdff #(1) lsu_free_c1_clkenff (.din(lsu_free_c1_clken), dout(lsu_free_c1_clken_q), clk(free_clk), *)
lsu_free_c2_clken := lsu_free_c1_clken | lsu_free_c1_clken_q | io.clk_override
rvdff #(1) lsu_c1_d_clkenff (.din(lsu_c1_d_clken), dout(lsu_c1_d_clken_q), clk(lsu_free_c2_clk), *)
rvdff #(1) lsu_c1_m_clkenff (.din(lsu_c1_m_clken), dout(lsu_c1_m_clken_q), clk(lsu_free_c2_clk), *)
rvdff #(1) lsu_c1_r_clkenff (.din(lsu_c1_r_clken), dout(lsu_c1_r_clken_q), clk(lsu_free_c2_clk), *)
io.lsu_c1_m_clk := 0.U // m pipe single pulse clock
io.lsu_c1_r_clk := 0.U // r pipe single pulse clock
// Clock Headers
rvoclkhdr lsu_c1m_cgc ( .en(lsu_c1_m_clken), l1clk(lsu_c1_m_clk), * )
rvoclkhdr lsu_c1r_cgc ( .en(lsu_c1_r_clken), l1clk(lsu_c1_r_clk), * )
io.lsu_c2_m_clk := 0.U // m pipe double pulse clock
io.lsu_c2_r_clk := 0.U // r pipe double pulse clock
rvoclkhdr lsu_c2m_cgc ( .en(lsu_c2_m_clken), l1clk(lsu_c2_m_clk), * )
rvoclkhdr lsu_c2r_cgc ( .en(lsu_c2_r_clken), l1clk(lsu_c2_r_clk), * )
io.lsu_store_c1_m_clk := 0.U // store in m
io.lsu_store_c1_r_clk := 0.U // store in r
rvoclkhdr lsu_store_c1m_cgc (.en(lsu_store_c1_m_clken), l1clk(lsu_store_c1_m_clk), *)
rvoclkhdr lsu_store_c1r_cgc (.en(lsu_store_c1_r_clken), l1clk(lsu_store_c1_r_clk), *)
io.lsu_stbuf_c1_clk := 0.U
io.lsu_bus_obuf_c1_clk := 0.U // ibuf clock
io.lsu_bus_ibuf_c1_clk := 0.U // ibuf clock
io.lsu_bus_buf_c1_clk := 0.U // ibuf clock
io.lsu_busm_clk := 0.U // bus clock
rvoclkhdr lsu_stbuf_c1_cgc ( .en(lsu_stbuf_c1_clken), l1clk(lsu_stbuf_c1_clk), * )
rvoclkhdr lsu_bus_ibuf_c1_cgc ( .en(lsu_bus_ibuf_c1_clken), l1clk(lsu_bus_ibuf_c1_clk), * )
rvclkhdr lsu_bus_obuf_c1_cgc ( .en(lsu_bus_obuf_c1_clken), l1clk(lsu_bus_obuf_c1_clk), * )
rvoclkhdr lsu_bus_buf_c1_cgc ( .en(lsu_bus_buf_c1_clken) =
val .l1clk(lsu_bus_buf_c1_clk), * )
io.lsu_free_c2_clk := 0.U
rvclkhdr lsu_busm_cgc (.en(lsu_bus_clk_en), l1clk(lsu_busm_clk), *)
/*0.U // Flops
rvdff #(1) lsu_free_c1_clkenff (.din(lsu_free_c1_clken), dout(lsu_free_c1_clken_q), clk(free_clk), *)
rvoclkhdr lsu_free_cgc (.en(lsu_free_c2_clken), l1clk(lsu_free_c2_clk), *)
rvdff #(1) lsu_c1_d_clkenff (.din(lsu_c1_d_clken), dout(lsu_c1_d_clken_q), clk(lsu_free_c2_clk), *)
rvdff #(1) lsu_c1_m_clkenff (.din(lsu_c1_m_clken), dout(lsu_c1_m_clken_q), clk(lsu_free_c2_clk), *)
rvdff #(1) lsu_c1_r_clkenff (.din(lsu_c1_r_clken), dout(lsu_c1_r_clken_q), clk(lsu_free_c2_clk), *)
*/
// Clock Headers
rvoclkhdr lsu_c1m_cgc ( .en(lsu_c1_m_clken), l1clk(lsu_c1_m_clk), * )
rvoclkhdr lsu_c1r_cgc ( .en(lsu_c1_r_clken), l1clk(lsu_c1_r_clk), * )
rvoclkhdr lsu_c2m_cgc ( .en(lsu_c2_m_clken), l1clk(lsu_c2_m_clk), * )
rvoclkhdr lsu_c2r_cgc ( .en(lsu_c2_r_clken), l1clk(lsu_c2_r_clk), * )
rvoclkhdr lsu_store_c1m_cgc (.en(lsu_store_c1_m_clken), l1clk(lsu_store_c1_m_clk), *)
rvoclkhdr lsu_store_c1r_cgc (.en(lsu_store_c1_r_clken), l1clk(lsu_store_c1_r_clk), *)
rvoclkhdr lsu_stbuf_c1_cgc ( .en(lsu_stbuf_c1_clken), l1clk(lsu_stbuf_c1_clk), * )
rvoclkhdr lsu_bus_ibuf_c1_cgc ( .en(lsu_bus_ibuf_c1_clken), l1clk(lsu_bus_ibuf_c1_clk), * )
rvclkhdr lsu_bus_obuf_c1_cgc ( .en(lsu_bus_obuf_c1_clken), l1clk(lsu_bus_obuf_c1_clk), * )
rvoclkhdr lsu_bus_buf_c1_cgc ( .en(lsu_bus_buf_c1_clken) =
val .l1clk(lsu_bus_buf_c1_clk), * )
rvclkhdr lsu_busm_cgc (.en(lsu_bus_clk_en), l1clk(lsu_busm_clk), *)
rvoclkhdr lsu_free_cgc (.en(lsu_free_c2_clken), l1clk(lsu_free_c2_clk), *)
*/
}