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emulation: ticktimer: add msleep support

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2020-11-04 13:41:18 +08:00
parent d8733a437c
commit e3dbf1e9d4
1 changed files with 70 additions and 6 deletions
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76
emulation/peripherals/ticktimer.cs
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@ -24,6 +24,7 @@ namespace Antmicro.Renode.Peripherals.Timers
public TickTimer(Machine machine, ulong periodInMs) : base(machine)
{
machine.ClockSource.AddClockEntry(new ClockEntry(periodInMs, ClockEntry.FrequencyToRatio(this, 1000), OnTick, this, "TickTimer"));
this.IRQ = new GPIO();
DefineRegisters();
}
@ -32,23 +33,37 @@ namespace Antmicro.Renode.Peripherals.Timers
base.Reset();
tickValue = 0;
paused = true;
msleepTarget = 0;
}
private void OnTick()
{
if (!paused) {
Interlocked.Increment(ref tickValue);
if (!paused)
{
this.irqStatus = Interlocked.Increment(ref tickValue) >= (long)this.msleepTarget;
this.UpdateInterrupts();
}
}
public long Size { get { return 0x20; }}
private void UpdateInterrupts()
{
if (this.irqStatus && this.irqEnabled.Value)
{
this.irqPending.Value = true;
}
this.Log(LogLevel.Noisy, "Setting IRQ: {0}", irqPending.Value);
IRQ.Set(irqPending.Value && irqEnabled.Value);
}
public long Size { get { return 0x20; } }
private void DefineRegisters()
{
Registers.Control.Define32(this)
.WithValueField(0, 32, name: "CONTROL", writeCallback: (_, val) =>
{
if ((val & 1) != 0) {
if ((val & 1) != 0)
{
tickValue = 0;
}
paused = (val & 2) != 0;
@ -58,26 +73,75 @@ namespace Antmicro.Renode.Peripherals.Timers
Registers.Time1.Define32(this)
.WithValueField(0, 32, FieldMode.Read, name: "Time1", valueProviderCallback: _ =>
{
return (uint) (tickValue >> 32);
return (uint)(tickValue >> 32);
})
;
Registers.Time0.Define32(this)
.WithValueField(0, 32, FieldMode.Read, name: "Time0", valueProviderCallback: _ =>
{
return (uint) (tickValue >> 0);
return (uint)(tickValue >> 0);
})
;
Registers.MsleepTarget1.Define32(this)
.WithValueField(0, 32, name: "MsleepTarget1", writeCallback: (_, value) =>
{
this.msleepTarget = (this.msleepTarget & 0x00000000ffffffff) | (value << 32);
this.Log(LogLevel.Noisy, "Setting sleep target 1: {0}, sleep target now: {1}", value, this.msleepTarget);
},
valueProviderCallback: _ =>
{
return (uint)(this.msleepTarget >> 32);
})
;
Registers.MsleepTarget0.Define32(this)
.WithValueField(0, 32, name: "MsleepTarget0",
writeCallback: (_, value) =>
{
this.msleepTarget = (this.msleepTarget & 0xffffffff00000000) | (value & 0xffffffff);
this.Log(LogLevel.Noisy, "Setting sleep target 0: {0}, sleep target now: {1}", value, this.msleepTarget);
},
valueProviderCallback: _ =>
{
return (uint)(this.msleepTarget >> 0);
})
;
Registers.EventStatus.Define32(this)
.WithFlag(0, FieldMode.Read, name: "EV_STATUS", valueProviderCallback: _ => irqStatus)
;
Registers.EventPending.Define32(this)
.WithFlag(0, out irqPending, FieldMode.Read | FieldMode.WriteOneToClear, name: "EV_PENDING", changeCallback: (_, __) => UpdateInterrupts())
;
Registers.EventEnable.Define32(this)
.WithFlag(0, out irqEnabled, name: "EV_ENABLE", changeCallback: (_, __) => UpdateInterrupts())
;
}
private IFlagRegisterField irqEnabled;
private IFlagRegisterField irqPending;
private bool irqStatus;
bool paused;
long tickValue;
ulong msleepTarget;
public GPIO IRQ { get; private set; }
private enum Registers
{
Control = 0x00,
Time1 = 0x04,
Time0 = 0x08,
MsleepTarget1 = 0x0c,
MsleepTarget0 = 0x10,
EventStatus = 0x14,
EventPending = 0x18,
EventEnable = 0x1c,
}
}
}