riscv/rocket-chip
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changes to the vector exception interface

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This commit is contained in:
Yunsup Lee 2012-03-11 21:38:47 -07:00
parent 113a94a21d
commit 1ba5e7b865
3 changed files with 62 additions and 60 deletions
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6
rocket/src/main/scala/cpu.scala
View File

@ -193,9 +193,13 @@ class rocketProc(resetSignal: Bool = null) extends Component(resetSignal)
ctrl.io.vec_iface.vpfximm2q_ready := vu.io.vec_pfximm2q.ready
ctrl.io.vec_iface.vpfcntq_ready := vu.io.vec_pfcntq.ready
// user level vector command queue ready signals
ctrl.io.vec_iface.vcmdq_user_ready := vu.io.vec_cmdq_user_ready
ctrl.io.vec_iface.vximm1q_user_ready := vu.io.vec_ximm1q_user_ready
ctrl.io.vec_iface.vximm2q_user_ready := vu.io.vec_ximm2q_user_ready
// fences
ctrl.io.vec_iface.vfence_ready := vu.io.vec_fence_ready
ctrl.io.vec_iface.vhold_ready := vu.io.vec_hold_ready
// exceptions
vu.io.xcpt.exception := ctrl.io.vec_iface.exception

1
rocket/src/main/scala/ctrl.scala
View File

@ -627,6 +627,7 @@ class rocketCtrl extends Component
io.vec_dpath <> vec.io.dpath
io.vec_iface <> vec.io.iface
vec.io.s := io.dpath.status(SR_S)
vec.io.sr_ev := io.dpath.status(SR_EV)
vec.io.exception := wb_reg_exception

115
rocket/src/main/scala/ctrl_vec.scala
View File

@ -38,8 +38,10 @@ class ioCtrlVecInterface extends Bundle
val vpfcntq_valid = Bool(OUTPUT)
val vpfcntq_ready = Bool(INPUT)
val vcmdq_user_ready = Bool(INPUT)
val vximm1q_user_ready = Bool(INPUT)
val vximm2q_user_ready = Bool(INPUT)
val vfence_ready = Bool(INPUT)
val vhold_ready = Bool(INPUT)
val exception = Bool(OUTPUT)
val exception_ack_valid = Bool(INPUT)
@ -50,6 +52,7 @@ class ioCtrlVec extends Bundle
{
val dpath = new ioCtrlDpathVec()
val iface = new ioCtrlVecInterface()
val s = Bool(INPUT)
val sr_ev = Bool(INPUT)
val exception = Bool(INPUT)
val replay = Bool(OUTPUT)
@ -76,59 +79,59 @@ class rocketCtrlVec extends Component
// val vcmd vimm vimm2 | fn | | | | | | | | | | fence_cv
// | | | | | | | | | | | | | | | | | waitxcpt
// | | | | | | | | | | | | | | | | | |
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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,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,N),
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)
List(N,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, 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),
VSETVL-> List(Y,VCMD_I, VIMM_VLEN,VIMM2_X, Y,VEC_VL, N,Y,Y,N,N,Y,Y,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),
VMVV-> List(Y,VCMD_TX,VIMM_X, VIMM2_X, N,VEC_X, Y,Y,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),
VFMVV-> List(Y,VCMD_TF,VIMM_X, VIMM2_X, N,VEC_X, Y,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),
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_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),
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),
VLD-> 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),
VLWU-> 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),
VLHU-> 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),
VLBU-> 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),
VSW-> 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),
VSB-> List(Y,VCMD_MX,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),
VFLW-> 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),
VFSW-> List(Y,VCMD_MF,VIMM_ALU, VIMM2_X, N,VEC_X, Y,Y,Y,N,N,Y,Y,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),
VLSTW-> 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),
VLSTH-> 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),
VLSTB-> 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),
VSSTD-> 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),
VSSTH-> 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),
VFLSTD-> 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),
VFSSTD-> 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),
VENQCMD-> List(Y,VCMD_A, VIMM_X, VIMM2_X, N,VEC_X, N,Y,N,N,N,Y,N,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),
VENQIMM2-> List(Y,VCMD_X, VIMM_X, VIMM2_X, N,VEC_X, N,N,N,Y,N,N,N,Y,N,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),
VWAITXCPT-> 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,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_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_pfaq :: wb_vec_fence_cv :: wb_vec_waitxcpt :: wb_vec_waithold :: Nil = veccs2
val wb_vec_pfaq :: wb_vec_fence_cv :: wb_vec_waitxcpt :: Nil = veccs2
val valid_common = io.dpath.valid && io.sr_ev && wb_vec_val && !(wb_vec_appvlmask && io.dpath.appvl0)
@ -137,9 +140,9 @@ class rocketCtrlVec extends Component
val wb_vec_pfximm2q_enq_mask_pfq = wb_vec_pfximm2q_enq && (!wb_vec_pfaq || io.dpath.pfq)
val wb_vec_pfcntq_enq_mask_pfq = wb_vec_pfcntq_enq && (!wb_vec_pfaq || io.dpath.pfq)
val mask_wb_vec_cmdq_ready = !wb_vec_cmdq_enq || io.iface.vcmdq_ready
val mask_wb_vec_ximm1q_ready = !wb_vec_ximm1q_enq || io.iface.vximm1q_ready
val mask_wb_vec_ximm2q_ready = !wb_vec_ximm2q_enq || io.iface.vximm2q_ready
val mask_wb_vec_cmdq_ready = !wb_vec_cmdq_enq || io.s && io.iface.vcmdq_ready || !io.s && io.iface.vcmdq_user_ready
val mask_wb_vec_ximm1q_ready = !wb_vec_ximm1q_enq || io.s && io.iface.vximm1q_ready || !io.s && io.iface.vximm1q_user_ready
val mask_wb_vec_ximm2q_ready = !wb_vec_ximm2q_enq || io.s && io.iface.vximm2q_ready || !io.s && io.iface.vximm2q_user_ready
val mask_wb_vec_cntq_ready = !wb_vec_cntq_enq || io.iface.vcntq_ready
val mask_wb_vec_pfcmdq_ready = !wb_vec_pfcmdq_enq_mask_pfq || io.iface.vpfcmdq_ready
val mask_wb_vec_pfximm1q_ready = !wb_vec_pfximm1q_enq_mask_pfq || io.iface.vpfximm1q_ready
@ -213,12 +216,6 @@ class rocketCtrlVec extends Component
io.iface.exception := io.exception && io.sr_ev
io.iface.exception_ack_ready := 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.stalld := reg_waitxcpt
io.vfence_ready := !io.sr_ev || io.iface.vfence_ready
}