diff options
| -rw-r--r-- | Kernel/Devices/HID/I8042Controller.cpp | 10 | ||||
| -rw-r--r-- | Kernel/Devices/HID/I8042Controller.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/Kernel/Devices/HID/I8042Controller.cpp b/Kernel/Devices/HID/I8042Controller.cpp index f05f5aa6cc..aeeb9edfa2 100644 --- a/Kernel/Devices/HID/I8042Controller.cpp +++ b/Kernel/Devices/HID/I8042Controller.cpp @@ -109,7 +109,17 @@ UNMAP_AFTER_INIT ErrorOr<void> I8042Controller::detect_devices() TRY(do_wait_then_write(I8042Port::Command, I8042Command::WriteConfiguration)); configuration &= ~I8042ConfigurationFlag::FirstPS2PortInterrupt; configuration &= ~I8042ConfigurationFlag::SecondPS2PortInterrupt; + + // Note: The default BIOS on the QEMU microvm machine type (qboot) doesn't + // behave like SeaBIOS, which means it doesn't set first port scan code translation. + // Howerver we rely on compatbility feature of the i8042 to send scan codes of set 1. + // To ensure that the controller is always outputting correct scan codes, set it + // to scan code 2 (because SeaBIOS on regular QEMU machine does this for us) and enable + // first port translation to ensure all scan codes are translated to scan code set 1. + configuration |= I8042ConfigurationFlag::FirstPS2PortTranslation; TRY(do_wait_then_write(I8042Port::Buffer, configuration)); + TRY(do_wait_then_write(I8042Port::Buffer, I8042Command::SetScanCodeSet)); + TRY(do_wait_then_write(I8042Port::Buffer, 0x2)); m_is_dual_channel = (configuration & I8042ConfigurationFlag::SecondPS2PortClock) != 0; dbgln("I8042: {} channel controller", m_is_dual_channel ? "Dual" : "Single"); diff --git a/Kernel/Devices/HID/I8042Controller.h b/Kernel/Devices/HID/I8042Controller.h index 5bbedce798..658dfc9712 100644 --- a/Kernel/Devices/HID/I8042Controller.h +++ b/Kernel/Devices/HID/I8042Controller.h @@ -30,6 +30,7 @@ enum I8042Command : u8 { DisableFirstPS2Port = 0xAD, EnableFirstPS2Port = 0xAE, WriteSecondPS2PortInputBuffer = 0xD4, + SetScanCodeSet = 0xF0, GetDeviceID = 0xF2, SetSampleRate = 0xF3, EnablePacketStreaming = 0xF4, |