power: Add power states to ClockedObject

Add 4 power states to the ClockedObject, provides necessary access functions
to check and update the power state. Default power state is UNDEFINED, it is
responsibility of the respective simulation model to provide the startup state
and any other logic for state change.

Add number of transition stat.
Add distribution of time spent in clock gated state.
Add power state residency stat.

Add dump call back function to allow stats update of distribution and residency
stats.

3 files changed, 6 insertions, 0 deletions

diff --git a/src/dev/arm/flash_device.cc b/src/dev/arm/flash_device.cc
index 60c910626..297354b65 100644
--- a/src/dev/arm/flash_device.cc
+++ b/src/dev/arm/flash_device.cc
@@ -472,6 +472,8 @@ FlashDevice::getUnknownPages(uint32_t index)
 void
 FlashDevice::regStats()
 {
+    AbstractNVM::regStats();
+
     using namespace Stats;
 
     std::string fd_name = name() + ".FlashDevice";
diff --git a/src/dev/arm/hdlcd.cc b/src/dev/arm/hdlcd.cc
index b04de21bf..0f63f23fc 100644
--- a/src/dev/arm/hdlcd.cc
+++ b/src/dev/arm/hdlcd.cc
@@ -97,6 +97,8 @@ HDLcd::~HDLcd()
 void
 HDLcd::regStats()
 {
+    AmbaDmaDevice::regStats();
+
     using namespace Stats;
 
     stats.underruns
diff --git a/src/dev/arm/ufs_device.cc b/src/dev/arm/ufs_device.cc
index 07d50903b..fe05b3279 100644
--- a/src/dev/arm/ufs_device.cc
+++ b/src/dev/arm/ufs_device.cc
@@ -774,6 +774,8 @@ UFSHostDeviceParams::create()
 void
 UFSHostDevice::regStats()
 {
+    DmaDevice::regStats();
+
     using namespace Stats;
 
     std::string UFSHost_name = name() + ".UFSDiskHost";