riscv/rocket-chip
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expand HTIF's PCR register space

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This commit is contained in:
Andrew Waterman 2012-07-26 03:28:07 -07:00
parent 7778802395
commit 130fa95ed6
2 changed files with 3 additions and 4 deletions
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3
rocket/src/main/scala/dpath_util.scala
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@ -121,7 +121,7 @@ class rocketDpathPCR extends Component
val rdata = Bits();
val raddr = Mux(io.r.en, io.r.addr, io.host.pcr_req.bits.addr)
val raddr = Mux(io.r.en, io.r.addr, io.host.pcr_req.bits.addr(4,0))
io.host.pcr_rep.valid := io.host.pcr_req.valid && !io.r.en && !io.host.pcr_req.bits.rw
io.host.pcr_rep.bits := rdata
@ -200,7 +200,6 @@ class rocketDpathPCR extends Component
when (waddr === PCR_COREID) { reg_coreid := wdata(15,0) }
when (waddr === PCR_FROMHOST) { reg_fromhost := wdata; reg_tohost := Bits(0) }
when (waddr === PCR_TOHOST) { reg_tohost := wdata; reg_fromhost := Bits(0) }
when (waddr === PCR_SEND_IPI) { io.host.ipi.valid := Bool(true) }
when (waddr === PCR_CLR_IPI) { r_irq_ipi := wdata(0) }
when (waddr === PCR_K0) { reg_k0 := wdata; }
when (waddr === PCR_K1) { reg_k1 := wdata; }

4
rocket/src/main/scala/htif.scala
View File

@ -18,7 +18,7 @@ class ioHost(w: Int) extends Bundle
class PCRReq extends Bundle
{
val rw = Bool()
val addr = Bits(width = 5)
val addr = Bits(width = 6)
val data = Bits(width = 64)
}
@ -75,7 +75,7 @@ class rocketHTIF(w: Int, ncores: Int, co: CoherencePolicyWithUncached) extends C
val cmd_readmem :: cmd_writemem :: cmd_readcr :: cmd_writecr :: cmd_ack :: cmd_nack :: Nil = Enum(6) { UFix() }
val pcr_addr = addr(4,0)
val pcr_addr = addr(io.cpu(0).pcr_req.bits.addr.width-1, 0)
val pcr_coreid = if (ncores == 1) UFix(0) else addr(20+log2Up(ncores),20)
val pcr_wdata = packet_ram(0)