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| author | Laurent Vivier | 2021-03-12 22:41:41 +0100 |
|---|---|---|
| committer | Laurent Vivier | 2021-03-15 21:02:03 +0100 |
| commit | 8c6df16ff6080365642b0583514dd03d6a7729d6 (patch) | |
| tree | 618d99f863c80a6c207369230ec71a06521d1247 /include/hw/char/goldfish_tty.h | |
| parent | Merge remote-tracking branch 'remotes/philmd/tags/avr-20210315' into staging (diff) | |
| download | qemu-8c6df16ff6080365642b0583514dd03d6a7729d6.tar.gz qemu-8c6df16ff6080365642b0583514dd03d6a7729d6.tar.xz qemu-8c6df16ff6080365642b0583514dd03d6a7729d6.zip | |
hw/char: add goldfish-tty
Implement the goldfish tty device as defined in
https://android.googlesource.com/platform/external/qemu/+/master/docs/GOLDFISH-VIRTUAL-HARDWARE.TXT
and based on the kernel driver code:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/goldfish.c
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210312214145.2936082-2-laurent@vivier.eu>
Diffstat (limited to 'include/hw/char/goldfish_tty.h')
| -rw-r--r-- | include/hw/char/goldfish_tty.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/hw/char/goldfish_tty.h b/include/hw/char/goldfish_tty.h new file mode 100644 index 0000000000..b9dd67362a --- /dev/null +++ b/include/hw/char/goldfish_tty.h @@ -0,0 +1,35 @@ +/* + * SPDX-License-Identifer: GPL-2.0-or-later + * + * Goldfish TTY + * + * (c) 2020 Laurent Vivier <laurent@vivier.eu> + * + */ + +#ifndef HW_CHAR_GOLDFISH_TTY_H +#define HW_CHAR_GOLDFISH_TTY_H + +#include "qemu/fifo8.h" +#include "chardev/char-fe.h" + +#define TYPE_GOLDFISH_TTY "goldfish_tty" +OBJECT_DECLARE_SIMPLE_TYPE(GoldfishTTYState, GOLDFISH_TTY) + +#define GOLFISH_TTY_BUFFER_SIZE 128 + +struct GoldfishTTYState { + SysBusDevice parent_obj; + + MemoryRegion iomem; + qemu_irq irq; + CharBackend chr; + + uint32_t data_len; + uint64_t data_ptr; + bool int_enabled; + + Fifo8 rx_fifo; +}; + +#endif |