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Prepare IO Ports for timer

This commit is contained in:
Björn Gaier 2023-01-06 12:14:53 +01:00
parent 9c77967c7f
commit 6608d92934
4 changed files with 198 additions and 81 deletions
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6
include/PSX/System/IOPorts/ioport.hpp
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@ -25,6 +25,11 @@ namespace JabyEngine {
constexpr const volatile T& ref() const {
return const_cast<volatile IOPort<T>*>(this)->value;
}
constexpr IOPort<T>& operator=(T value) {
IOPort::write(value);
return *this;
}
};
struct __no_align ubus32_t {
@ -63,6 +68,7 @@ namespace JabyEngine {
#define __declare_io_port_global(type, name, adr) __declare_io_port_global_raw(, type, name, adr)
#define __declare_io_port_global_const(type, name, adr) __declare_io_port_global_raw(const, type, name, adr)
#define __declare_io_port_global_array(type, name, adr, size) static __always_inline auto& name = reinterpret_cast<type(&)[size]>(*reinterpret_cast<type*>((IO_Base_Adr + (adr & ~IO_Base_Mask))))
#define __declare_io_port_global_struct(type, name, adr) static __always_inline auto& name = *reinterpret_cast<type*>(__io_port_adr(adr))

93
include/PSX/System/IOPorts/timer_io.hpp Normal file
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@ -0,0 +1,93 @@
#ifndef __JABYENGINE_TIMER_IO_HPP__
#define __JABYENGINE_TIMER_IO_HPP__
#include "ioport.hpp"
namespace JabyEngine {
namespace Timer {
enum struct SyncMode {};
struct __no_align CounterMode : public ComplexBitMap<uint32_t> {
__io_port_inherit_complex_bit_map(CounterMode);
static constexpr auto SyncEnable = Bit<uint32_t>(0);
static constexpr auto SyncMode = BitRange<uint32_t>::from_to(1, 2);
static constexpr auto ResetAfterTarget = Bit<uint32_t>(3);
static constexpr auto IRQAtTarget = Bit<uint32_t>(4);
static constexpr auto IRQAtMax = Bit<uint32_t>(5);
static constexpr auto IRQOneShot = !Bit<uint32_t>(6);
static constexpr auto IRQEveryTime = Bit<uint32_t>(6);
static constexpr auto IRQPulse = !Bit<uint32_t>(7);
static constexpr auto IRQToggle = Bit<uint32_t>(7);
static constexpr auto ClockSource = BitRange<uint32_t>::from_to(8, 9);
static constexpr auto HasIRQRequest = Bit<uint32_t>(10);
static constexpr auto IsTargetReached = Bit<uint32_t>(11);
static constexpr auto IsMaxReached = Bit<uint32_t>(12);
};
struct __no_align CounterTarget : public ComplexBitMap<uint32_t> {
__io_port_inherit_complex_bit_map(CounterTarget);
static constexpr auto CounterTargetValue = BitRange<uint32_t>::from_to(0, 15);
};
struct __no_align Timer {
IOPort<CounterMode> counter_mode;
IOPort<CounterTarget> counter_target;
private:
uint32_t _unused[2];
};
__declare_io_port_global_array(Timer, timer, 0x1F801104, 3);
static_assert(sizeof(Timer) == 0x10);
namespace Counter0 {
struct SyncMode {
static constexpr auto Pause_During_Hblank = CounterMode::SyncMode.with(0);
static constexpr auto Zero_At_Hblank = CounterMode::SyncMode.with(1);
static constexpr auto Zero_At_Hblank_Pause_Outside_Hblank = CounterMode::SyncMode.with(2);
static constexpr auto Pause_Until_Hblank_Then_Freerun = CounterMode::SyncMode.with(3);
};
struct Source {
static constexpr auto System_Clock = CounterMode::ClockSource.with(0);
static constexpr auto Dot_Clock = CounterMode::ClockSource.with(1);
static constexpr auto System_Clock_Too = CounterMode::ClockSource.with(2);
static constexpr auto Dot_Clock_Too = CounterMode::ClockSource.with(3);
};
}
namespace Counter1 {
struct SyncMode {
static constexpr auto Pause_During_Vblank = CounterMode::SyncMode.with(0);
static constexpr auto Zero_At_Vblank = CounterMode::SyncMode.with(1);
static constexpr auto Zero_At_Vblank_Pause_Outside_Vblank = CounterMode::SyncMode.with(2);
static constexpr auto Pause_Until_Vblank_Then_Freerun = CounterMode::SyncMode.with(3);
};
struct Source {
static constexpr auto System_Clock = CounterMode::ClockSource.with(0);
static constexpr auto Hblank = CounterMode::ClockSource.with(1);
static constexpr auto System_Clock_Too = CounterMode::ClockSource.with(2);
static constexpr auto Hblank_Too = CounterMode::ClockSource.with(3);
};
}
namespace Counter2 {
struct SyncMode {
static constexpr auto Stop_Counter = CounterMode::SyncMode.with(0);
static constexpr auto Freerun = CounterMode::SyncMode.with(1);
static constexpr auto Freerun_Too = CounterMode::SyncMode.with(2);
static constexpr auto Stop_Counter_Too = CounterMode::SyncMode.with(3);
};
struct Source {
static constexpr auto System_Clock = CounterMode::ClockSource.with(0);
static constexpr auto System_Clock_Too = CounterMode::ClockSource.with(1);
static constexpr auto System_Clock_Div_8 = CounterMode::ClockSource.with(2);
static constexpr auto System_Clock_Div_8_Too = CounterMode::ClockSource.with(3);
};
}
}
}
#endif //!__JABYENGINE_TIMER_IO_HPP__

4
src/Library/include/BootLoader/boot_loader.hpp
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@ -20,5 +20,9 @@ namespace JabyEngine {
namespace BootFile {
JabyEngine::NextRoutine setup();
}
namespace Timer {
void setup();
}
}
#endif //!BOOT_LOADER_HPP

14
src/Library/src/BootLoader/timer_boot.cpp Normal file
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@ -0,0 +1,14 @@
#include <PSX/System/IOPorts/timer_io.hpp>
namespace JabyEngine {
namespace Timer {
void setup() {
// Just testing around
static constexpr auto wuff = CounterMode::with(CounterMode::IRQAtMax, Counter0::SyncMode::Zero_At_Hblank);
timer[0].counter_mode = wuff;
timer[0].counter_mode = wuff;
timer[0].counter_mode = wuff;
}
}
}