[RFC PATCH v1 0/5] hw/gpio: STM32F1xx GPIO controller in Rust

Hi all,

This RFC adds an STM32F1xx GPIO controller modelled in Rust, following the
existing rust/hw/char/pl011 device as a template. The register logic (CRL/CRH
mode+config decode and the IDR update algorithm) is a direct port of the C
model in hw/gpio/stm32l4x5_gpio.c; the STM32F1xx GPIO block (RM0008) is the
same IP used by the upstream stm32f100_soc.

This series is currently stacked on an out-of-tree STM32F103 SoC and board
that are not yet upstream which is https://github.com/shandianchengzi/qemu
But the commit(the initialize logic and gpio architecture) is both capable 
for stm32f100.This is the reason that struct name is  stm32f1xx. Patch 3 
("hw/arm/stm32f103: instantiate and mapGPIO ports") therefore touches files 
that do not exist in mainline and willnot apply cleanly on its own. 
I am sending this as an RFC to get feedback onthe Rust device model and 
its integration now, before the SoC lands, rather than as an apply-ready series
. Once the SoC is upstream (or if you I
can retarget the device at the existing stm32f100_soc), I will resend a
non-RFC series.

checkpatch reports SPDX warnings on Kconfig/trace-events/Cargo.toml/
meson.build and "MAINTAINERS need updating" on the new files. These are
false positives: matching rust/hw/char/pl011, these file types carry no SPDX
header in-tree, and MAINTAINERS already gains an entry covering rust/hw/gpio/
and the qtest in this series.

Anyway this is my first time to generate rust model build so sorry for some
mistakes. And any help or tip are welcomed

Jack Wang (5):
  hw/gpio: add stm32f1xx GPIO device model (Rust)
  rust: add hw/gpio crate to the workspace
  hw/arm/stm32f103: instantiate and map GPIO ports
  tests/qtest: add stm32f103 GPIO test
  rust/hw/gpio: add native unit tests

 MAINTAINERS                       |   7 +
 hw/arm/Kconfig                    |   1 +
 hw/arm/stm32f103_board.c          |   2 +-
 hw/arm/stm32f103_soc.c            |  54 ++-
 hw/gpio/Kconfig                   |   5 +
 hw/gpio/trace-events              |   7 +
 include/hw/arm/stm32f103_soc.h    |   9 +
 rust/Cargo.lock                   |  17 +-
 rust/Cargo.toml                   |  18 +
 rust/hw/Kconfig                   |   1 +
 rust/hw/gpio/Cargo.toml           |  28 ++
 rust/hw/gpio/Kconfig              |   2 +
 rust/hw/gpio/meson.build          |  54 +++
 rust/hw/gpio/src/bindings.rs      |  19 ++
 rust/hw/gpio/src/gpio.rs          | 539 ++++++++++++++++++++++++++++++
 rust/hw/gpio/src/lib.rs           |   3 +
 rust/hw/gpio/tests/tests.rs       | 191 +++++++++++
 rust/hw/meson.build               |   1 +
 tests/qtest/meson.build           |   4 +
 tests/qtest/stm32f103_gpio-test.c | 328 ++++++++++++++++++
 20 files changed, 1281 insertions(+), 9 deletions(-)
 create mode 100644 rust/hw/gpio/Cargo.toml
 create mode 100644 rust/hw/gpio/Kconfig
 create mode 100644 rust/hw/gpio/meson.build
 create mode 100644 rust/hw/gpio/src/bindings.rs
 create mode 100644 rust/hw/gpio/src/gpio.rs
 create mode 100644 rust/hw/gpio/src/lib.rs
 create mode 100644 rust/hw/gpio/tests/tests.rs
 create mode 100644 tests/qtest/stm32f103_gpio-test.c

-- 
2.53.0