We have implemented I2C and the first GPIO device in Rust for QEMU. Additionally, in the respective patches, we have shared our insights and experiences regarding the use of Rust for device modeling within QEMU.
1. The first patch implements the BusState for the I2CBus infrastructure. 2. The second patch implements the I2CBus and I2CSlave infrastructure, along with a discussion of the challenges encountered during the implementation. 3. The third patch provides a set of necessary helper functions for the PCF8574 GPIO device. 4. The fourth patch implements the PCF8574 GPIO device, along with a discussion of the issues and considerations addressed during the implementation. Signed-off-by: Chen Miao <[email protected]> Signed-off-by: Chao Liu <[email protected]> chenmiao (4): rust/hw/core: Add the BusState of rust version rust/hw/core: Add rust bindings/funcs for i2c bus rust/hw/core: Provide some interfaces for the GPIO device rust/hw/gpio: Add the the first gpio device pcf8574 hw/gpio/Kconfig | 5 + hw/gpio/meson.build | 2 +- rust/Cargo.lock | 18 +- rust/Cargo.toml | 1 + rust/hw/Kconfig | 1 + rust/hw/core/meson.build | 2 + rust/hw/core/src/bus.rs | 44 +++++ rust/hw/core/src/i2c.rs | 303 +++++++++++++++++++++++++++++++ rust/hw/core/src/lib.rs | 6 + rust/hw/core/src/qdev.rs | 17 +- rust/hw/core/wrapper.h | 1 + rust/hw/gpio/Kconfig | 2 + rust/hw/gpio/meson.build | 1 + rust/hw/gpio/pcf8574/Cargo.toml | 28 +++ rust/hw/gpio/pcf8574/meson.build | 37 ++++ rust/hw/gpio/pcf8574/src/lib.rs | 178 ++++++++++++++++++ rust/hw/meson.build | 1 + 17 files changed, 642 insertions(+), 5 deletions(-) create mode 100644 rust/hw/core/src/bus.rs create mode 100644 rust/hw/core/src/i2c.rs create mode 100644 rust/hw/gpio/Kconfig create mode 100644 rust/hw/gpio/meson.build create mode 100644 rust/hw/gpio/pcf8574/Cargo.toml create mode 100644 rust/hw/gpio/pcf8574/meson.build create mode 100644 rust/hw/gpio/pcf8574/src/lib.rs -- 2.43.0
