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Handle dir behavior better

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This commit is contained in:
Pokechu22 2022-07-27 18:05:36 -07:00
parent 76767fcfb4
commit 143e4a8319
2 changed files with 28 additions and 11 deletions
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36
Source/Core/Core/HW/WII_IPC.cpp
View file

@ -245,19 +245,25 @@ static u32 ReadGPIOIn(Core::System& system)
return gpio_in.m_hex;
}
void WiiIPC::WriteGPIOOut(Core::System& system, bool broadway, u32 value)
u32 WiiIPC::GetGPIOOut()
{
Common::Flags<GPIO> old_value = m_gpio_out;
// In the direction field, a '1' bit for a pin indicates that it will behave as an output (drive),
// while a '0' bit tristates the pin and it becomes a high-impedance input.
// In practice this means that (at least for the AVE I²C pins) a 1 is output when the pin is an
// input. (RVLoader depends on this.)
// https://github.com/Aurelio92/RVLoader/blob/75732f248019f589deb1109bba7b5323a8afaadf/source/i2c.c#L101-L109
return m_gpio_out.m_hex | ~m_gpio_dir.m_hex;
}
if (broadway)
m_gpio_out.m_hex = (value & gpio_owner.m_hex) | (m_gpio_out.m_hex & ~gpio_owner.m_hex);
else
m_gpio_out.m_hex = (value & ~gpio_owner.m_hex) | (m_gpio_out.m_hex & gpio_owner.m_hex);
void WiiIPC::GPIOOutChanged(u32 old_value_hex)
{
Common::Flags<GPIO> old_value;
old_value.m_hex = old_value_hex;
if (m_gpio_out[GPIO::DO_EJECT])
{
INFO_LOG_FMT(WII_IPC, "Ejecting disc due to GPIO write");
system.GetDVDInterface().EjectDisc(Core::CPUThreadGuard{system}, DVD::EjectCause::Software);
m_system.GetDVDInterface().EjectDisc(Core::CPUThreadGuard{m_system}, DVD::EjectCause::Software);
}
// I²C logic for the audio/video encoder (AVE)
@ -425,13 +431,18 @@ void WiiIPC::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
mmio->Register(base | GPIOB_OUT, MMIO::DirectRead<u32>(&m_gpio_out.m_hex),
MMIO::ComplexWrite<u32>([](Core::System& system, u32, u32 val) {
auto& wii_ipc = system.GetWiiIPC();
wii_ipc.WriteGPIOOut(system, true, val);
const u32 old_out = wii_ipc.GetGPIOOut();
wii_ipc.m_gpio_out.m_hex =
(val & gpio_owner.m_hex) | (wii_ipc.m_gpio_out.m_hex & ~gpio_owner.m_hex);
wii_ipc.GPIOOutChanged(old_out);
}));
mmio->Register(base | GPIOB_DIR, MMIO::DirectRead<u32>(&m_gpio_dir.m_hex),
MMIO::ComplexWrite<u32>([](Core::System& system, u32, u32 val) {
auto& wii_ipc = system.GetWiiIPC();
const u32 old_out = wii_ipc.GetGPIOOut();
wii_ipc.m_gpio_dir.m_hex =
(val & gpio_owner.m_hex) | (wii_ipc.m_gpio_dir.m_hex & ~gpio_owner.m_hex);
wii_ipc.GPIOOutChanged(old_out);
}));
mmio->Register(base | GPIOB_IN, MMIO::ComplexRead<u32>([](Core::System& system, u32) {
return ReadGPIOIn(system);
@ -451,13 +462,18 @@ void WiiIPC::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
mmio->Register(base | GPIO_OUT, MMIO::DirectRead<u32>(&m_gpio_out.m_hex),
MMIO::ComplexWrite<u32>([](Core::System& system, u32, u32 val) {
auto& wii_ipc = system.GetWiiIPC();
wii_ipc.WriteGPIOOut(system, false, val);
const u32 old_out = wii_ipc.GetGPIOOut();
wii_ipc.m_gpio_out.m_hex =
(val & ~gpio_owner.m_hex) | (wii_ipc.m_gpio_out.m_hex & gpio_owner.m_hex);
wii_ipc.GPIOOutChanged(old_out);
}));
mmio->Register(base | GPIO_DIR, MMIO::DirectRead<u32>(&m_gpio_dir.m_hex),
MMIO::ComplexWrite<u32>([](Core::System& system, u32, u32 val) {
auto& wii_ipc = system.GetWiiIPC();
const u32 old_out = wii_ipc.GetGPIOOut();
wii_ipc.m_gpio_dir.m_hex =
(wii_ipc.m_gpio_dir.m_hex & gpio_owner.m_hex) | (val & ~gpio_owner.m_hex);
(val & gpio_owner.m_hex) | (wii_ipc.m_gpio_dir.m_hex & ~gpio_owner.m_hex);
wii_ipc.GPIOOutChanged(old_out);
}));
mmio->Register(base | GPIO_IN, MMIO::ComplexRead<u32>([](Core::System& system, u32) {
return ReadGPIOIn(system);

3
Source/Core/Core/HW/WII_IPC.h
View file

@ -140,7 +140,8 @@ private:
static void UpdateInterruptsCallback(Core::System& system, u64 userdata, s64 cycles_late);
void UpdateInterrupts();
void WriteGPIOOut(Core::System& system, bool broadway, u32 value);
u32 GetGPIOOut();
void GPIOOutChanged(u32 old_value_hex);
u32 m_ppc_msg = 0;
u32 m_arm_msg = 0;