[PATCH RFC v2 2/5] rust: add hw/gpio crate to the workspace

Add the stm32f1xx_gpio crate to the QEMU Rust workspace and Meson/Kconfig build graph. Build it only when Rust support and the STM32F1xx GPIO configuration are enabled.

Keep native test registration out of this commit; it is added together with the test source later in the series.

Signed-off-by: Jack Wang <[email protected]>
---
 Cargo.lock               | 15 +++++++++++++++
 Cargo.toml               |  1 +
 rust/hw/Kconfig          |  1 +
 rust/hw/gpio/Cargo.toml  | 30 ++++++++++++++++++++++++++++++
 rust/hw/gpio/meson.build |  8 ++++++++
 rust/hw/meson.build      |  1 +
 6 files changed, 56 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index ad664a812d..507257384e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -314,6 +314,21 @@ version = "1.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
 
+[[package]]
+name = "stm32f1xx_gpio"
+version = "0.1.0"
+dependencies = [
+ "bql",
+ "common",
+ "glib-sys",
+ "hwcore",
+ "migration",
+ "qom",
+ "system",
+ "trace",
+ "util",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.104"
diff --git a/Cargo.toml b/Cargo.toml
index b35704faab..5e25c307c1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 resolver = "2"
 members = [
     "rust/hw/char/pl011",
+    "rust/hw/gpio",
     "rust/hw/timer/hpet",
     "rust/tests",
 ]
diff --git a/rust/hw/Kconfig b/rust/hw/Kconfig
index 36f92ec028..ba1297ca2d 100644
--- a/rust/hw/Kconfig
+++ b/rust/hw/Kconfig
@@ -1,3 +1,4 @@
 # devices Kconfig
 source char/Kconfig
+source gpio/Kconfig
 source timer/Kconfig
diff --git a/rust/hw/gpio/Cargo.toml b/rust/hw/gpio/Cargo.toml
new file mode 100644
index 0000000000..f6a1407984
--- /dev/null
+++ b/rust/hw/gpio/Cargo.toml
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+[package]
+name = "stm32f1xx_gpio"
+version = "0.1.0"
+description = "STM32F1xx GPIO device model for QEMU"
+resolver = "2"
+publish = false
+
+edition.workspace = true
+homepage.workspace = true
+license.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+glib-sys.workspace = true
+
+# QEMU Rust foundations crate
+common = { path = "../../common" }
+util = { path = "../../util" }
+bql = { path = "../../bql" }
+migration = { path = "../../migration" }
+qom = { path = "../../qom" }
+system = { path = "../../system" }
+hwcore = { path = "../../hw/core" }
+trace = { path = "../../trace" }
+
+[lints]
+workspace = true
diff --git a/rust/hw/gpio/meson.build b/rust/hw/gpio/meson.build
new file mode 100644
index 0000000000..e359d7e329
--- /dev/null
+++ b/rust/hw/gpio/meson.build
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+_libstm32f1xx_gpio_rs = cargo_ws.package('stm32f1xx_gpio').library()
+
+rust_devices_ss.add(when: 'CONFIG_X_STM32F1XX_GPIO_RUST', if_true: [declare_dependency(
+  link_whole: [_libstm32f1xx_gpio_rs],
+  variables: {'crate': 'stm32f1xx_gpio'},
+)])
diff --git a/rust/hw/meson.build b/rust/hw/meson.build
index 9749d4adfc..d6b273170e 100644
--- a/rust/hw/meson.build
+++ b/rust/hw/meson.build
@@ -1,2 +1,3 @@
 subdir('char')
+subdir('gpio')
 subdir('timer')

-- 
2.53.0