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authorOmar Naji <Omar.Naji@arm.com>2016-10-13 19:22:10 +0100
committerOmar Naji <Omar.Naji@arm.com>2016-10-13 19:22:10 +0100
commitd19dc35b06e803b227531507805f317386c540e6 (patch)
treeca893cd9a01f9fc873b28b20dc97b58f097c36ad /src/mem
parent20e6bb0140aa54429ce6ac069fd4c0a40fecf787 (diff)
downloadgem5-d19dc35b06e803b227531507805f317386c540e6.tar.xz
mem: add DRAM powerdown timing
Diffstat (limited to 'src/mem')
-rw-r--r--src/mem/DRAMCtrl.py30
-rw-r--r--src/mem/dram_ctrl.cc3
-rw-r--r--src/mem/dram_ctrl.hh2
3 files changed, 34 insertions, 1 deletions
diff --git a/src/mem/DRAMCtrl.py b/src/mem/DRAMCtrl.py
index 81d0b7581..a1d9e2707 100644
--- a/src/mem/DRAMCtrl.py
+++ b/src/mem/DRAMCtrl.py
@@ -370,6 +370,12 @@ class DDR3_1600_x64(DRAMCtrl):
# <=85C, half for >85C
tREFI = '7.8us'
+ # active powerdown and precharge powerdown exit time
+ tXP = '6ns'
+
+ # self refresh exit time
+ tXS = '270ns'
+
# Current values from datasheet
IDD0 = '75mA'
IDD2N = '50mA'
@@ -591,6 +597,12 @@ class DDR4_2400_x64(DRAMCtrl):
# <=85C, half for >85C
tREFI = '7.8us'
+ # active powerdown and precharge powerdown exit time
+ tXP = '6ns'
+
+ # self refresh exit time
+ tXS = '120ns'
+
# Current values from datasheet
IDD0 = '70mA'
IDD02 = '4.6mA'
@@ -659,6 +671,12 @@ class LPDDR2_S4_1066_x32(DRAMCtrl):
tRFC = '130ns'
tREFI = '3.9us'
+ # active powerdown and precharge powerdown exit time
+ tXP = '7.5ns'
+
+ # self refresh exit time
+ tXS = '140ns'
+
# Irrespective of speed grade, tWTR is 7.5 ns
tWTR = '7.5ns'
@@ -815,6 +833,12 @@ class LPDDR3_1600_x32(DRAMCtrl):
tRFC = '130ns'
tREFI = '3.9us'
+ # active powerdown and precharge powerdown exit time
+ tXP = '7.5ns'
+
+ # self refresh exit time
+ tXS = '140ns'
+
# Irrespective of speed grade, tWTR is 7.5 ns
tWTR = '7.5ns'
@@ -1057,3 +1081,9 @@ class HBM_1000_4H_x64(HBM_1000_4H_x128):
# Default different rank bus delay to 2 CK, @1000 MHz = 2 ns
tCS = '2ns'
tREFI = '3.9us'
+
+ # active powerdown and precharge powerdown exit time
+ tXP = '10ns'
+
+ # self refresh exit time
+ tXS = '65ns'
diff --git a/src/mem/dram_ctrl.cc b/src/mem/dram_ctrl.cc
index 55e1cf805..1ef311382 100644
--- a/src/mem/dram_ctrl.cc
+++ b/src/mem/dram_ctrl.cc
@@ -82,7 +82,8 @@ DRAMCtrl::DRAMCtrl(const DRAMCtrlParams* p) :
tCK(p->tCK), tWTR(p->tWTR), tRTW(p->tRTW), tCS(p->tCS), tBURST(p->tBURST),
tCCD_L(p->tCCD_L), tRCD(p->tRCD), tCL(p->tCL), tRP(p->tRP), tRAS(p->tRAS),
tWR(p->tWR), tRTP(p->tRTP), tRFC(p->tRFC), tREFI(p->tREFI), tRRD(p->tRRD),
- tRRD_L(p->tRRD_L), tXAW(p->tXAW), activationLimit(p->activation_limit),
+ tRRD_L(p->tRRD_L), tXAW(p->tXAW), tXP(p->tXP), tXS(p->tXS),
+ activationLimit(p->activation_limit),
memSchedPolicy(p->mem_sched_policy), addrMapping(p->addr_mapping),
pageMgmt(p->page_policy),
maxAccessesPerRow(p->max_accesses_per_row),
diff --git a/src/mem/dram_ctrl.hh b/src/mem/dram_ctrl.hh
index f59528492..98f47edc2 100644
--- a/src/mem/dram_ctrl.hh
+++ b/src/mem/dram_ctrl.hh
@@ -726,6 +726,8 @@ class DRAMCtrl : public AbstractMemory
const Tick tRRD;
const Tick tRRD_L;
const Tick tXAW;
+ const Tick tXP;
+ const Tick tXS;
const uint32_t activationLimit;
/**