riscv/rocket-chip
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add vector hold waits

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This commit is contained in:
Yunsup Lee 2012-03-11 16:28:56 -07:00
parent e42a4c767e
commit 113a94a21d
2 changed files with 57 additions and 49 deletions
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1
rocket/src/main/scala/cpu.scala
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@ -195,6 +195,7 @@ class rocketProc(resetSignal: Bool = null) extends Component(resetSignal)
// fences // fences
ctrl.io.vec_iface.vfence_ready := vu.io.vec_fence_ready ctrl.io.vec_iface.vfence_ready := vu.io.vec_fence_ready
ctrl.io.vec_iface.vhold_ready := vu.io.vec_hold_ready
// exceptions // exceptions
vu.io.xcpt.exception := ctrl.io.vec_iface.exception vu.io.xcpt.exception := ctrl.io.vec_iface.exception

105
rocket/src/main/scala/ctrl_vec.scala
View File

@ -39,6 +39,7 @@ class ioCtrlVecInterface extends Bundle
val vpfcntq_ready = Bool(INPUT) val vpfcntq_ready = Bool(INPUT)
val vfence_ready = Bool(INPUT) val vfence_ready = Bool(INPUT)
val vhold_ready = Bool(INPUT)
val exception = Bool(OUTPUT) val exception = Bool(OUTPUT)
val exception_ack_valid = Bool(INPUT) val exception_ack_valid = Bool(INPUT)
@ -75,59 +76,59 @@ class rocketCtrlVec extends Component
// val vcmd vimm vimm2 | fn | | | | | | | | | | fence_cv // val vcmd vimm vimm2 | fn | | | | | | | | | | fence_cv
// | | | | | | | | | | | | | | | | | waitxcpt // | | | | | | | | | | | | | | | | | waitxcpt
// | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | |
List(N,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,N),Array( List(N,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,N,N),Array(
VVCFGIVL-> List(Y,VCMD_I, VIMM_VLEN,VIMM2_X, Y,VEC_CFG,N,Y,Y,N,N,Y,Y,N,N,N,N,N), VVCFGIVL-> List(Y,VCMD_I, VIMM_VLEN,VIMM2_X, Y,VEC_CFG,N,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VSETVL-> List(Y,VCMD_I, VIMM_VLEN,VIMM2_X, Y,VEC_VL, N,Y,Y,N,N,Y,Y,N,N,N,N,N), VSETVL-> List(Y,VCMD_I, VIMM_VLEN,VIMM2_X, Y,VEC_VL, N,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VF-> List(Y,VCMD_I, VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,N,N,N,N,N,N,N), VF-> List(Y,VCMD_I, VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,N,N,N,N,N,N,N,N),
VMVV-> List(Y,VCMD_TX,VIMM_X, VIMM2_X, N,VEC_X, Y,Y,N,N,N,N,N,N,N,N,N,N), VMVV-> List(Y,VCMD_TX,VIMM_X, VIMM2_X, N,VEC_X, Y,Y,N,N,N,N,N,N,N,N,N,N,N),
VMSV-> List(Y,VCMD_TX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,N,N,N,N,N,N,N), VMSV-> List(Y,VCMD_TX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,N,N,N,N,N,N,N,N),
VFMVV-> List(Y,VCMD_TF,VIMM_X, VIMM2_X, N,VEC_X, Y,Y,N,N,N,N,N,N,N,N,N,N), VFMVV-> List(Y,VCMD_TF,VIMM_X, VIMM2_X, N,VEC_X, Y,Y,N,N,N,N,N,N,N,N,N,N,N),
FENCE_L_V-> List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,N,N), FENCE_L_V-> List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,N,N,N),
FENCE_G_V-> List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,N,N), FENCE_G_V-> List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,N,N,N),
FENCE_L_CV->List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,Y,N), FENCE_L_CV->List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,Y,N,N),
FENCE_G_CV->List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,N,N,N,N,N,Y,N), FENCE_G_CV->List(Y,VCMD_F, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,Y,N,N),
VLD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLWU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLWU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLHU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLHU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLBU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VLBU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VSD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VSD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VSW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VSW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VSH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VSH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VSB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VSB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VFLD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VFLD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VFLW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VFLW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VFSD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VFSD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VFSW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N), VFSW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,N,N,N,N,N,N),
VLSTD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTWU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTWU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTHU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTHU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VLSTBU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VLSTBU-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VSSTD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VSSTD-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VSSTW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VSSTW-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VSSTH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VSSTH-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VSSTB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VSSTB-> List(Y,VCMD_MX,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VFLSTD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VFLSTD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VFLSTW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VFLSTW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VFSSTD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VFSSTD-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VFSSTW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N), VFSSTW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,Y,N,Y,Y,Y,N,N,N,N,N),
VENQCMD-> List(Y,VCMD_A, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,Y,N,N,N,Y,N,N), VENQCMD-> List(Y,VCMD_A, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,Y,N,N,N,Y,N,N,N),
VENQIMM1-> List(Y,VCMD_X, VIMM_ALU, VIMM2_X, N,VEC_X, N,N,Y,N,N,N,Y,N,N,Y,N,N), VENQIMM1-> List(Y,VCMD_X, VIMM_ALU, VIMM2_X, N,VEC_X, N,N,Y,N,N,N,Y,N,N,Y,N,N,N),
VENQIMM2-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,Y,N,N,N,Y,N,Y,N,N), VENQIMM2-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,Y,N,N,N,Y,N,Y,N,N,N),
VENQCNT-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,Y,N,N,N,Y,Y,N,N), VENQCNT-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,Y,N,N,N,Y,Y,N,N,N),
VWAITXCPT-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,Y), VWAITXCPT-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,Y,N),
VWAITKILL-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,Y) VWAITKILL-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,N,N,N,N,N,N,N,N,N,Y)
)) ))
val wb_vec_val :: wb_sel_vcmd :: wb_sel_vimm :: wb_sel_vimm2 :: wb_vec_wen :: wb_vec_fn :: wb_vec_appvlmask :: veccs0 = veccs val wb_vec_val :: wb_sel_vcmd :: wb_sel_vimm :: wb_sel_vimm2 :: wb_vec_wen :: wb_vec_fn :: wb_vec_appvlmask :: veccs0 = veccs
val wb_vec_cmdq_enq :: wb_vec_ximm1q_enq :: wb_vec_ximm2q_enq :: wb_vec_cntq_enq :: veccs1 = veccs0 val wb_vec_cmdq_enq :: wb_vec_ximm1q_enq :: wb_vec_ximm2q_enq :: wb_vec_cntq_enq :: veccs1 = veccs0
val wb_vec_pfcmdq_enq :: wb_vec_pfximm1q_enq :: wb_vec_pfximm2q_enq :: wb_vec_pfcntq_enq :: veccs2 = veccs1 val wb_vec_pfcmdq_enq :: wb_vec_pfximm1q_enq :: wb_vec_pfximm2q_enq :: wb_vec_pfcntq_enq :: veccs2 = veccs1
val wb_vec_pfaq :: wb_vec_fence_cv :: wb_vec_waitxcpt :: Nil = veccs2 val wb_vec_pfaq :: wb_vec_fence_cv :: wb_vec_waitxcpt :: wb_vec_waithold :: Nil = veccs2
val valid_common = io.dpath.valid && io.sr_ev && wb_vec_val && !(wb_vec_appvlmask && io.dpath.appvl0) val valid_common = io.dpath.valid && io.sr_ev && wb_vec_val && !(wb_vec_appvlmask && io.dpath.appvl0)
@ -212,6 +213,12 @@ class rocketCtrlVec extends Component
io.iface.exception := io.exception && io.sr_ev io.iface.exception := io.exception && io.sr_ev
io.iface.exception_ack_ready := reg_waitxcpt io.iface.exception_ack_ready := reg_waitxcpt
io.stalld := reg_waitxcpt val reg_waithold = Reg(resetVal = Bool(false))
val do_waithold = valid_common && wb_vec_waithold && !io.replay
when (do_waithold) { reg_waithold := Bool(true) }
when (io.iface.vhold_ready) { reg_waithold := Bool(false) }
io.stalld := reg_waitxcpt || reg_waithold
io.vfence_ready := !io.sr_ev || io.iface.vfence_ready io.vfence_ready := !io.sr_ev || io.iface.vfence_ready
} }