private static NvHostEvent GetFreeEvent(
ServiceCtx Context,
NvHostSyncpt Syncpt,
int Id,
out int EventIndex)
{
NvHostEvent[] Events = GetUserCtx(Context).Events;
EventIndex = NvHostCtrlUserCtx.EventsCount;
int NullIndex = NvHostCtrlUserCtx.EventsCount;
for (int Index = 0; Index < NvHostCtrlUserCtx.EventsCount; Index++)
{
NvHostEvent Event = Events[Index];
if (Event != null)
{
if (Event.State == NvHostEventState.Registered ||
Event.State == NvHostEventState.Free)
{
EventIndex = Index;
if (Event.Id == Id)
{
return(Event);
}
}
}
else if (NullIndex == NvHostCtrlUserCtx.EventsCount)
{
NullIndex = Index;
}
}
if (NullIndex < NvHostCtrlUserCtx.EventsCount)
{
EventIndex = NullIndex;
return(Events[NullIndex] = new NvHostEvent());
}
if (EventIndex < NvHostCtrlUserCtx.EventsCount)
{
return(Events[EventIndex]);
}
return(null);
}
private static int EventWait(ServiceCtx Context, bool Async)
{
long InputPosition = Context.Request.GetBufferType0x21Position();
long OutputPosition = Context.Request.GetBufferType0x22Position();
NvHostCtrlSyncptWaitEx Args = AMemoryHelper.Read <NvHostCtrlSyncptWaitEx>(Context.Memory, InputPosition);
if ((uint)Args.Id >= NvHostSyncpt.SyncptsCount)
{
return(NvResult.InvalidInput);
}
void WriteArgs()
{
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
}
NvHostSyncpt Syncpt = GetUserCtx(Context).Syncpt;
if (Syncpt.MinCompare(Args.Id, Args.Thresh))
{
Args.Value = Syncpt.GetMin(Args.Id);
WriteArgs();
return(NvResult.Success);
}
if (!Async)
{
Args.Value = 0;
}
if (Args.Timeout == 0)
{
WriteArgs();
return(NvResult.TryAgain);
}
NvHostEvent Event;
int Result, EventIndex;
if (Async)
{
EventIndex = Args.Value;
if ((uint)EventIndex >= NvHostCtrlUserCtx.EventsCount)
{
return(NvResult.InvalidInput);
}
Event = GetUserCtx(Context).Events[EventIndex];
}
else
{
Event = GetFreeEvent(Context, Syncpt, Args.Id, out EventIndex);
}
if (Event != null &&
(Event.State == NvHostEventState.Registered ||
Event.State == NvHostEventState.Free))
{
Event.Id = Args.Id;
Event.Thresh = Args.Thresh;
Event.State = NvHostEventState.Waiting;
if (!Async)
{
Args.Value = ((Args.Id & 0xfff) << 16) | 0x10000000;
}
else
{
Args.Value = Args.Id << 4;
}
Args.Value |= EventIndex;
Result = NvResult.TryAgain;
}
else
{
Result = NvResult.InvalidInput;
}
WriteArgs();
return(Result);
}
private static int SyncptWait(ServiceCtx Context, bool Extended)
{
long InputPosition = Context.Request.GetBufferType0x21Position();
long OutputPosition = Context.Request.GetBufferType0x22Position();
NvHostCtrlSyncptWait Args = AMemoryHelper.Read <NvHostCtrlSyncptWait>(Context.Memory, InputPosition);
NvHostSyncpt Syncpt = GetUserCtx(Context).Syncpt;
if ((uint)Args.Id >= NvHostSyncpt.SyncptsCount)
{
return(NvResult.InvalidInput);
}
int Result;
if (Syncpt.MinCompare(Args.Id, Args.Thresh))
{
Result = NvResult.Success;
}
else if (Args.Timeout == 0)
{
Result = NvResult.TryAgain;
}
else
{
Context.Ns.Log.PrintDebug(LogClass.ServiceNv, "Waiting syncpt with timeout of " + Args.Timeout + "ms...");
using (ManualResetEvent WaitEvent = new ManualResetEvent(false))
{
Syncpt.AddWaiter(Args.Thresh, WaitEvent);
//Note: Negative (> INT_MAX) timeouts aren't valid on .NET,
//in this case we just use the maximum timeout possible.
int Timeout = Args.Timeout;
if (Timeout < -1)
{
Timeout = int.MaxValue;
}
if (Timeout == -1)
{
WaitEvent.WaitOne();
Result = NvResult.Success;
}
else if (WaitEvent.WaitOne(Timeout))
{
Result = NvResult.Success;
}
else
{
Result = NvResult.TimedOut;
}
}
Context.Ns.Log.PrintDebug(LogClass.ServiceNv, "Resuming...");
}
if (Extended)
{
Context.Memory.WriteInt32(OutputPosition + 0xc, Syncpt.GetMin(Args.Id));
}
return(Result);
}