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| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2022-06-24 14:41:08 +0100 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2022-06-26 18:40:12 +0100 |
| commit | 38f426b8af844c8243b1cd5e6d883c176c527c3b (patch) | |
| tree | 75913facca686765a8e5baef49c0ef9a12c33ddb /include/hw | |
| parent | 6eb252d50cf08704adffed7c758a5b95b15c27e9 (diff) | |
| download | qemu-38f426b8af844c8243b1cd5e6d883c176c527c3b.zip qemu-38f426b8af844c8243b1cd5e6d883c176c527c3b.tar.gz qemu-38f426b8af844c8243b1cd5e6d883c176c527c3b.tar.bz2 | |
pckbd: add QEMU interface comment for I8042 device
This describes the I8042 device interface implemented within QEMU.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20220624134109.881989-54-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/input/i8042.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index d4747b6..ca933d8 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -39,6 +39,16 @@ typedef struct KBDState { hwaddr mask; } KBDState; +/* + * QEMU interface: + * + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2 + * keyboard device has asserted its irq + * + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2 + * mouse device has asserted its irq + * + Named GPIO output "a20": A20 line for x86 PCs + * + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1) + */ + #define TYPE_I8042 "i8042" OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042) |