Migrate PO subsystem to C++

xtoskrnl/po/idle.cc

@@ -0,0 +1,102 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/po/idle.cc
+ * DESCRIPTION:     Processor idle functionality support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+/**
+ * Initializes Processor Control Block's (PRCB) power state structures.
+ *
+ * @param Prcb
+ *        Supplies a pointer to the PRCB being initialized.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+PO::Idle::InitializeProcessorIdleState(IN OUT PKPROCESSOR_CONTROL_BLOCK Prcb)
+{
+    /* Zero memory */
+    RtlZeroMemory(&Prcb->PowerState, sizeof(Prcb->PowerState));
+
+    /* Initialize default power state */
+    Prcb->PowerState.Idle0TimeLimit = 0xFFFFFFFF;
+    Prcb->PowerState.CurrentThrottle = 100;
+    Prcb->PowerState.CurrentThrottleIndex = 0;
+    Prcb->PowerState.IdleFunction = Idle0Function;
+
+    /* Initialize DPC and Timer */
+    KeInitializeDpc(&Prcb->PowerState.PerfDpc, PerfIdleDpc, Prcb);
+    KeSetTargetProcessorDpc(&Prcb->PowerState.PerfDpc, Prcb->CpuNumber);
+    KeInitializeTimer(&Prcb->PowerState.PerfTimer, SynchronizationTimer);
+}
+
+/**
+ * Processor idle loop routine.
+ *
+ * @param PowerState
+ *        Supplies a pointer to the structere containing current processor power state.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTFASTCALL
+VOID
+PO::Idle::Idle0Function(IN PPROCESSOR_POWER_STATE PowerState)
+{
+    UNIMPLEMENTED;
+}
+
+/**
+ * Switches CPU between different performance levels.
+ *
+ * @param PowerState
+ *        Supplies a pointer to the structure containing IDLE processor power state.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 5.1
+ */
+XTAPI
+VOID
+PO::Idle::PerfIdle(PPROCESSOR_POWER_STATE PowerState)
+{
+    UNIMPLEMENTED;
+}
+
+/**
+ * Checks if CPU is running at the maximum (performance) frequency.
+ *
+ * @param Dpc
+ *        Supplies a pointer to the DPC object.
+ *
+ * @param DeferredContext
+ *        Supplies a pointer to memory area containing current CPU's PRCB.
+ *
+ * @param SystemArgument1
+ *        Supplies a pointer to an unused system argument.
+ *
+ * @param SystemArgument2
+ *        Supplies a pointer to an unused system argument.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 5.1
+ */
+XTAPI
+VOID
+PO::Idle::PerfIdleDpc(IN PKDPC Dpc,
+                      IN PVOID DeferredContext,
+                      IN PVOID SystemArgument1,
+                      IN PVOID SystemArgument2)
+{
+    UNIMPLEMENTED;
+}