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https://github.com/holub/mame
synced 2025-04-23 08:49:55 +03:00
nforcepc.cpp: start adding ITE IT8703F-A SuperIO (nw)
The device is undocumented but it is very similar to Winbond W83627 chips.
This commit is contained in:
yz70s
parent
9e850ffe14
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acc073745a
@ -333,6 +333,273 @@ void as99127f_sensor3_device::device_start()
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memset(buffer, 0, sizeof(buffer));
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}
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// ITE IT8703F-A SuperIO
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DEFINE_DEVICE_TYPE(IT8703F, it8703f_device, "it8703f_device", "ITE IT8703F-A SuperIO")
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it8703f_device::it8703f_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, IT8703F, tag, owner, clock)
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, mode(OperatingMode::Run)
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, config_key_step(0)
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, config_index(0)
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, logical_device(0)
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, pin_reset_callback(*this)
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, pin_gatea20_callback(*this)
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, m_kbdc(*this, "pc_kbdc")
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{
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memset(global_configuration_registers, 0, sizeof(global_configuration_registers));
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memset(configuration_registers, 0, sizeof(configuration_registers));
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for (int n = 0; n < 13; n++)
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enabled_logical[n] = false;
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}
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void it8703f_device::device_start()
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{
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pin_reset_callback.resolve_safe();
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pin_gatea20_callback.resolve_safe();
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}
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void it8703f_device::internal_memory_map(address_map &map)
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{
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}
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void it8703f_device::internal_io_map(address_map &map)
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{
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map(0x002e, 0x002f).rw(FUNC(it8703f_device::read_it8703f), FUNC(it8703f_device::write_it8703f));
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}
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uint16_t it8703f_device::get_base_address(int logical, int index)
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{
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int position = index * 2 + 0x60;
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return ((uint16_t)configuration_registers[logical][position] << 8) + (uint16_t)configuration_registers[logical][position + 1];
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}
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void it8703f_device::device_add_mconfig(machine_config &config)
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{
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// keyboard
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KBDC8042(config, m_kbdc);
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m_kbdc->set_keyboard_type(kbdc8042_device::KBDC8042_PS2);
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m_kbdc->input_buffer_full_callback().set(FUNC(it8703f_device::irq_keyboard_w));
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m_kbdc->system_reset_callback().set(FUNC(it8703f_device::kbdp20_gp20_reset_w));
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m_kbdc->gate_a20_callback().set(FUNC(it8703f_device::kbdp21_gp25_gatea20_w));
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}
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READ8_MEMBER(it8703f_device::read_it8703f)
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{
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if (offset == 0)
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{
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if (mode == OperatingMode::Run)
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return 0;
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return config_index;
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}
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else if (offset == 1)
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{
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if (mode == OperatingMode::Run)
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return 0;
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if (config_index < 0x30)
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return read_global_configuration_register(config_index);
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else
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return read_logical_configuration_register(config_index);
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}
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else
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return 0;
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}
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WRITE8_MEMBER(it8703f_device::write_it8703f)
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{
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uint8_t byt;
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if (offset == 0)
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{
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byt = data & 0xff;
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if (mode == OperatingMode::Run)
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{
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if (byt != 0x87)
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return;
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config_key_step++;
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if (config_key_step > 1)
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{
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config_key_step = 0;
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mode = OperatingMode::Configuration;
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}
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}
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else
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{
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if (byt == 0xaa)
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{
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mode = OperatingMode::Run;
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return;
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}
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config_index = byt;
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}
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}
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else if (offset == 1)
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{
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if (mode == OperatingMode::Run)
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return;
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byt = data & 0xff;
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if (config_index < 0x30)
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write_global_configuration_register(config_index, byt);
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else
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write_logical_configuration_register(config_index, byt);
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}
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else
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return;
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}
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void it8703f_device::write_global_configuration_register(int index, int data)
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{
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global_configuration_registers[index] = data;
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switch (index)
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{
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case 7:
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logical_device = data;
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logerror("Selected logical device %d\n", data);
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break;
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}
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logerror("Write global configuration register %02X = %02X\n", index, data);
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}
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void it8703f_device::write_logical_configuration_register(int index, int data)
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{
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configuration_registers[logical_device][index] = data;
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switch (logical_device)
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{
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case LogicalDevice::Keyboard:
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if (index == 0x30)
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{
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if (data & 1)
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{
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if (enabled_logical[LogicalDevice::Keyboard] == false)
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map_keyboard_addresses();
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enabled_logical[LogicalDevice::Keyboard] = true;
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logerror("Enabled Keyboard\n");
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}
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else
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{
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if (enabled_logical[LogicalDevice::Keyboard] == true)
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unmap_keyboard_addresses();
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enabled_logical[LogicalDevice::Keyboard] = false;
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}
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}
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break;
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}
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}
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uint16_t it8703f_device::read_global_configuration_register(int index)
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{
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uint16_t ret = 0;
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ret = global_configuration_registers[index];
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switch (index)
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{
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case 7:
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ret = logical_device;
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break;
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}
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logerror("Read global configuration register %02X = %02X\n", index, ret);
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return ret;
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}
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uint16_t it8703f_device::read_logical_configuration_register(int index)
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{
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return configuration_registers[logical_device][index];
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}
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WRITE_LINE_MEMBER(it8703f_device::irq_keyboard_w)
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{
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if (enabled_logical[LogicalDevice::Keyboard] == false)
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return;
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lpchost->set_virtual_line(configuration_registers[LogicalDevice::Keyboard][0x70], state ? ASSERT_LINE : CLEAR_LINE);
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}
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WRITE_LINE_MEMBER(it8703f_device::kbdp21_gp25_gatea20_w)
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{
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if (enabled_logical[LogicalDevice::Keyboard] == false)
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return;
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pin_gatea20_callback(state);
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}
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WRITE_LINE_MEMBER(it8703f_device::kbdp20_gp20_reset_w)
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{
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if (enabled_logical[LogicalDevice::Keyboard] == false)
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return;
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pin_reset_callback(state);
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}
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void it8703f_device::map_keyboard(address_map &map)
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{
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map(0x0, 0x0).rw(FUNC(it8703f_device::at_keybc_r), FUNC(it8703f_device::at_keybc_w));
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map(0x4, 0x4).rw(FUNC(it8703f_device::keybc_status_r), FUNC(it8703f_device::keybc_command_w));
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}
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void it8703f_device::unmap_keyboard(address_map &map)
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{
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map(0x0, 0x0).noprw();
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map(0x4, 0x4).noprw();
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}
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READ8_MEMBER(it8703f_device::at_keybc_r)
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{
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switch (offset) //m_kbdc
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{
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case 0:
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return m_kbdc->data_r(space, 0);
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}
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return 0xff;
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}
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WRITE8_MEMBER(it8703f_device::at_keybc_w)
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{
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switch (offset)
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{
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case 0:
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m_kbdc->data_w(space, 0, data);
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}
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}
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READ8_MEMBER(it8703f_device::keybc_status_r)
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{
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return m_kbdc->data_r(space, 4);
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}
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WRITE8_MEMBER(it8703f_device::keybc_command_w)
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{
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m_kbdc->data_w(space, 4, data);
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}
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void it8703f_device::map_keyboard_addresses()
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{
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uint16_t base = get_base_address(LogicalDevice::Keyboard, 0);
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iospace->install_device(base, base + 7, *this, &it8703f_device::map_keyboard);
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}
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void it8703f_device::unmap_keyboard_addresses()
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{
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uint16_t base = get_base_address(LogicalDevice::Keyboard, 0);
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iospace->install_device(base, base + 7, *this, &it8703f_device::unmap_keyboard);
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}
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void it8703f_device::map_extra(address_space *memory_space, address_space *io_space)
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{
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memspace = memory_space;
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iospace = io_space;
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io_space->install_device(0, 0xffff, *this, &it8703f_device::internal_io_map);
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if (enabled_logical[LogicalDevice::Keyboard] == true)
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map_keyboard_addresses();
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}
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void it8703f_device::set_host(int index, lpcbus_host_interface *host)
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{
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lpchost = host;
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lpcindex = index;
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}
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/*
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Machine state
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*/
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@ -385,7 +652,7 @@ void nforcepc_state::machine_reset()
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}
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const nforcepc_state::boot_state_info nforcepc_state::boot_state_infos_award[] = {
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{ 0xC0, "Turn off chipset cache" },
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{ 0xC0, "First basic initialization" },
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{ 0, nullptr }
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};
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@ -440,6 +707,9 @@ void nforcepc_state::nforcepc(machine_config &config)
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mcpx_isalpc_device &isa(MCPX_ISALPC(config, ":pci:01.0", 0, 0x10430c11)); // 10de:01b2 NVIDIA Corporation nForce ISA Bridge (LPC bus)
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isa.boot_state_hook().set(FUNC(nforcepc_state::boot_state_award_w));
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isa.interrupt_output().set(FUNC(nforcepc_state::maincpu_interrupt));
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it8703f_device &ite(IT8703F(config, ":pci:01.0:0", 0));
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ite.pin_reset().set_inputline(":maincpu", INPUT_LINE_RESET);
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ite.pin_gatea20().set_inputline(":maincpu", INPUT_LINE_A20);
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MCPX_SMBUS(config, ":pci:01.1", 0); // 10de:01b4 NVIDIA Corporation nForce PCI System Management (SMBus)
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SMBUS_ROM(config, ":pci:01.1:050", 0, test_spd_data, sizeof(test_spd_data)); // these 3 are on smbus number 0
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SMBUS_LOGGER(config, ":pci:01.1:051", 0);
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@ -472,7 +742,7 @@ ROM_START(nforcepc)
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ROM_END
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static INPUT_PORTS_START(nforcepc)
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//PORT_INCLUDE(at_keyboard)
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PORT_INCLUDE(at_keyboard)
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INPUT_PORTS_END
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COMP(2002, nforcepc, 0, 0, nforcepc, nforcepc, nforcepc_state, empty_init, "Nvidia", "Nvidia nForce PC (CRUSH11/12)", MACHINE_IS_SKELETON)
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@ -4,6 +4,7 @@
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#define MAME_MACHINE_NFORCEPC_H
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#pragma once
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#include "machine/8042kbdc.h"
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// NVIDIA Corporation nForce CPU bridge
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@ -163,4 +164,87 @@ private:
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DECLARE_DEVICE_TYPE(AS99127F_SENSOR3, as99127f_sensor3_device)
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// ITE IT8703F-A SuperIO
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class it8703f_device : public device_t, public lpcbus_device_interface
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{
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public:
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it8703f_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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virtual void map_extra(address_space *memory_space, address_space *io_space) override;
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virtual void set_host(int index, lpcbus_host_interface *host) override;
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virtual void device_add_mconfig(machine_config &config) override;
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auto pin_reset() { return pin_reset_callback.bind(); }
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auto pin_gatea20() { return pin_gatea20_callback.bind(); }
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// keyboard
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DECLARE_WRITE_LINE_MEMBER(irq_keyboard_w);
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DECLARE_WRITE_LINE_MEMBER(kbdp21_gp25_gatea20_w);
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DECLARE_WRITE_LINE_MEMBER(kbdp20_gp20_reset_w);
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void map_keyboard(address_map &map);
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void unmap_keyboard(address_map &map);
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DECLARE_READ8_MEMBER(read_it8703f);
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DECLARE_WRITE8_MEMBER(write_it8703f);
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// keyboard
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DECLARE_READ8_MEMBER(at_keybc_r);
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DECLARE_WRITE8_MEMBER(at_keybc_w);
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DECLARE_READ8_MEMBER(keybc_status_r);
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DECLARE_WRITE8_MEMBER(keybc_command_w);
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protected:
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virtual void device_start() override;
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private:
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enum OperatingMode
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{
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Run = 0,
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Configuration = 1
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} mode;
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enum LogicalDevice
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{
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FDC = 0,
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Parallel,
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Serial1,
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Serial2,
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Keyboard = 5,
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ConsumerIR,
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Gpio1,
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Gpio2,
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Gpio34,
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ACPI,
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Gpio567 = 12
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};
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int config_key_step;
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int config_index;
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int logical_device;
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uint8_t global_configuration_registers[0x30];
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uint8_t configuration_registers[13][0x100];
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devcb_write_line pin_reset_callback;
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devcb_write_line pin_gatea20_callback;
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required_device<kbdc8042_device> m_kbdc;
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bool enabled_logical[13];
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lpcbus_host_interface *lpchost;
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int lpcindex;
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address_space *memspace;
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address_space *iospace;
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void internal_memory_map(address_map &map);
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void internal_io_map(address_map &map);
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uint16_t get_base_address(int logical, int index);
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void map_keyboard_addresses();
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void unmap_keyboard_addresses();
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void write_global_configuration_register(int index, int data);
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void write_logical_configuration_register(int index, int data);
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void write_keyboard_configuration_register(int index, int data);
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uint16_t read_global_configuration_register(int index);
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uint16_t read_logical_configuration_register(int index);
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uint16_t read_keyboard_configuration_register(int index);
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};
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DECLARE_DEVICE_TYPE(IT8703F, it8703f_device)
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#endif
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