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Even more refactoring
This commit is contained in:
Pokechu22
parent
a45f21e422
commit
74f1ed4c4b
1 changed files with 93 additions and 84 deletions
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@ -159,6 +159,8 @@ public:
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private:
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void Start();
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void Stop();
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void SCLRisingEdge(const bool sda);
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void SCLFallingEdge(const bool sda);
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bool WriteExpected() const;
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};
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I2CBus i2c_state;
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@ -415,104 +417,111 @@ void I2CBus::Update(Core::System& system, const bool old_scl, const bool new_scl
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{
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if (!old_scl && new_scl)
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{
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// INFO_LOG_FMT(WII_IPC, "AVE: {} rising edge: {} (write expected: {})", bit_counter, new_sda,
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// WriteExpected());
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// SCL rising edge indicates data clocking. For reads, we set up data at this point.
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// For writes, we instead process it on the falling edge, to better distinguish
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// the start/stop condition.
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if (bit_counter == 0 && !WriteExpected())
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{
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// Start of a read.
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if (device_address.has_value())
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{
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current_byte = reinterpret_cast<u8*>(&ave_state)[device_address.value()];
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INFO_LOG_FMT(WII_IPC, "AVE: Read from {:02x} ({}) -> {:02x}", device_address.value(),
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GetAVERegisterName(device_address.value()), current_byte);
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}
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else
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{
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ERROR_LOG_FMT(WII_IPC, "AVE: Attempted to read device without having a read address!");
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acknowledge = false;
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}
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}
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// Dolphin_Debugger::PrintCallstack(Common::Log::LogType::WII_IPC,
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// Common::Log::LogLevel::LINFO);
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SCLRisingEdge(new_sda);
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}
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else if (old_scl && !new_scl)
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{
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// INFO_LOG_FMT(WII_IPC, "AVE: {} falling edge: {} (write expected: {})", bit_counter,
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// new_sda,
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// WriteExpected());
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// SCL falling edge is used to advance bit_counter and process wri'tes.
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if (bit_counter != 9 && WriteExpected())
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SCLFallingEdge(new_sda);
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}
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}
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}
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void I2CBus::SCLRisingEdge(const bool sda)
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{
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// INFO_LOG_FMT(WII_IPC, "AVE: {} rising edge: {} (write expected: {})", bit_counter, new_sda,
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// WriteExpected());
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// SCL rising edge indicates data clocking. For reads, we set up data at this point.
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// For writes, we instead process it on the falling edge, to better distinguish
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// the start/stop condition.
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if (bit_counter == 0 && !WriteExpected())
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{
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// Start of a read.
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if (device_address.has_value())
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{
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current_byte = reinterpret_cast<u8*>(&ave_state)[device_address.value()];
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INFO_LOG_FMT(WII_IPC, "AVE: Read from {:02x} ({}) -> {:02x}", device_address.value(),
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GetAVERegisterName(device_address.value()), current_byte);
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}
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else
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{
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ERROR_LOG_FMT(WII_IPC, "AVE: Attempted to read device without having a read address!");
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acknowledge = false;
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}
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}
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// Dolphin_Debugger::PrintCallstack(Common::Log::LogType::WII_IPC, Common::Log::LogLevel::LINFO);
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}
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void I2CBus::SCLFallingEdge(const bool sda)
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{
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// INFO_LOG_FMT(WII_IPC, "AVE: {} falling edge: {} (write expected: {})", bit_counter, new_sda,
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// WriteExpected());
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// SCL falling edge is used to advance bit_counter and process wri'tes.
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if (bit_counter != 9 && WriteExpected())
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{
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if (bit_counter == 8)
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{
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// Acknowledge bit for *reads*.
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if (sda)
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WARN_LOG_FMT(WII_IPC, "Read NACK'd");
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}
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else
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{
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current_byte <<= 1;
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if (sda)
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current_byte |= 1;
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if (bit_counter == 7)
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{
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if (bit_counter == 8)
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INFO_LOG_FMT(WII_IPC, "AVE: Byte written: {:02x}", current_byte);
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// Write finished.
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if (!i2c_address.has_value())
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{
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// Acknowledge bit for *reads*.
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if (new_sda)
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WARN_LOG_FMT(WII_IPC, "Read NACK'd");
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i2c_address = current_byte;
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if ((current_byte & 1) == 0)
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{
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// Write, which always specifies the device address
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device_address.reset();
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}
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// TODO: Reads should still have the accessed device write the ACK
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INFO_LOG_FMT(WII_IPC, "AVE: I2C address is {:02x}", current_byte);
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}
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else if (!device_address.has_value())
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{
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device_address = current_byte;
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INFO_LOG_FMT(WII_IPC, "AVE: Device address is {:02x}", current_byte);
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}
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else
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{
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current_byte <<= 1;
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if (new_sda)
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current_byte |= 1;
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if (bit_counter == 7)
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// Actual write
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const u8 old_ave_value = reinterpret_cast<u8*>(&ave_state)[device_address.value()];
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reinterpret_cast<u8*>(&ave_state)[device_address.value()] = current_byte;
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if (!ave_ever_logged[device_address.value()] || old_ave_value != current_byte)
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{
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INFO_LOG_FMT(WII_IPC, "AVE: Byte written: {:02x}", current_byte);
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// Write finished.
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if (!i2c_address.has_value())
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{
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i2c_address = current_byte;
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if ((current_byte & 1) == 0)
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{
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// Write, which always specifies the device address
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device_address.reset();
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}
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// TODO: Reads should still have the accessed device write the ACK
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INFO_LOG_FMT(WII_IPC, "AVE: I2C address is {:02x}", current_byte);
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}
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else if (!device_address.has_value())
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{
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device_address = current_byte;
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INFO_LOG_FMT(WII_IPC, "AVE: Device address is {:02x}", current_byte);
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}
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else
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{
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// Actual write
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const u8 old_ave_value = reinterpret_cast<u8*>(&ave_state)[device_address.value()];
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reinterpret_cast<u8*>(&ave_state)[device_address.value()] = current_byte;
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if (!ave_ever_logged[device_address.value()] || old_ave_value != current_byte)
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{
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INFO_LOG_FMT(WII_IPC, "AVE: Wrote {:02x} to {:02x} ({})", current_byte,
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device_address.value(), GetAVERegisterName(device_address.value()));
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ave_ever_logged[device_address.value()] = true;
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}
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else
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{
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DEBUG_LOG_FMT(WII_IPC, "AVE: Wrote {:02x} to {:02x} ({})", current_byte,
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device_address.value(), GetAVERegisterName(device_address.value()));
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}
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device_address = device_address.value() + 1;
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}
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INFO_LOG_FMT(WII_IPC, "AVE: Wrote {:02x} to {:02x} ({})", current_byte,
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device_address.value(), GetAVERegisterName(device_address.value()));
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ave_ever_logged[device_address.value()] = true;
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}
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else
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{
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DEBUG_LOG_FMT(WII_IPC, "AVE: Wrote {:02x} to {:02x} ({})", current_byte,
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device_address.value(), GetAVERegisterName(device_address.value()));
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}
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device_address = device_address.value() + 1;
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}
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}
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if (bit_counter >= 8)
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{
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// Finished a byte and the acknowledge signal.
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bit_counter = 0;
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}
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else
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{
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bit_counter++;
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}
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// Dolphin_Debugger::PrintCallstack(Common::Log::LogType::WII_IPC,
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// Common::Log::LogLevel::LINFO);
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}
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}
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if (bit_counter >= 8)
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{
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// Finished a byte and the acknowledge signal.
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bit_counter = 0;
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}
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else
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{
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bit_counter++;
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}
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// Dolphin_Debugger::PrintCallstack(Common::Log::LogType::WII_IPC, Common::Log::LogLevel::LINFO);
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}
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void WiiIPC::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
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