feat: expand wdk-sys coverage to include gpio and parallel ports related headers

crates/wdk-build/src/lib.rs

@@ -197,8 +197,12 @@ pub enum ApiSubset {
     Base,
     /// API subset required for WDF (Windows Driver Framework) drivers: <https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/_wdf/>
     Wdf,
+    /// API subset for GPIO (General Purpose Input/Output) drivers: <https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/_gpio/>
+    Gpio,
     /// API subset for HID (Human Interface Device) drivers: <https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/_hid/>
     Hid,
+    /// API subset for Parallel Ports drivers: <https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/_parports/>
+    ParallelPorts,
     /// API subset for SPB (Serial Peripheral Bus) drivers: <https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/_spb/>
     Spb,
 }
@@ -658,6 +662,15 @@ impl Config {
                     vec![]
                 }
             }
+            ApiSubset::Gpio => {
+                let mut gpio_headers = vec!["gpio.h"];
+
+                if let DriverConfig::Kmdf(_) = self.driver_config {
+                    gpio_headers.extend(["gpioclx.h"]);
+                }
+
+                gpio_headers
+            }
             ApiSubset::Hid => {
                 let mut hid_headers = vec!["hidclass.h", "hidsdi.h", "hidpi.h", "vhf.h"];
 
@@ -671,6 +684,15 @@ impl Config {
 
                 hid_headers
             }
+            ApiSubset::ParallelPorts => {
+                let mut parallel_ports_headers = vec!["ntddpar.h", "ntddser.h"];
+
+                if let DriverConfig::Wdm | DriverConfig::Kmdf(_) = self.driver_config {
+                    parallel_ports_headers.extend(["parallel.h"]);
+                }
+
+                parallel_ports_headers
+            }
             ApiSubset::Spb => {
                 let mut spb_headers = vec!["spb.h", "reshub.h"];
 

crates/wdk-sys/Cargo.toml

@@ -35,8 +35,10 @@ wdk-macros.workspace = true
 [features]
 default = []
 
+gpio = []
 hid = []
 spb = []
+parallel-ports = ["gpio"]
 
 nightly = ["wdk-macros/nightly"]
 test-stubs = []

crates/wdk-sys/build.rs

@@ -131,7 +131,9 @@ const BINDGEN_FILE_GENERATORS_TUPLES: &[(&str, GenerateFn)] = &[
     ("types.rs", generate_types),
     ("base.rs", generate_base),
     ("wdf.rs", generate_wdf),
+    ("gpio.rs", generate_gpio),
     ("hid.rs", generate_hid),
+    ("parallel_ports.rs", generate_parallel_ports),
     ("spb.rs", generate_spb),
 ];
 
@@ -195,10 +197,14 @@ fn generate_constants(out_path: &Path, config: &Config) -> Result<(), ConfigErro
     let header_contents = config.bindgen_header_contents([
         ApiSubset::Base,
         ApiSubset::Wdf,
+        #[cfg(feature = "gpio")]
+        ApiSubset::Gpio,
         #[cfg(feature = "hid")]
         ApiSubset::Hid,
         #[cfg(feature = "spb")]
         ApiSubset::Spb,
+        #[cfg(feature = "parallel-ports")]
+        ApiSubset::ParallelPorts,
     ]);
     trace!(header_contents = ?header_contents);
 
@@ -219,10 +225,14 @@ fn generate_types(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
     let header_contents = config.bindgen_header_contents([
         ApiSubset::Base,
         ApiSubset::Wdf,
+        #[cfg(feature = "gpio")]
+        ApiSubset::Gpio,
         #[cfg(feature = "hid")]
         ApiSubset::Hid,
         #[cfg(feature = "spb")]
         ApiSubset::Spb,
+        #[cfg(feature = "parallel-ports")]
+        ApiSubset::ParallelPorts,
     ]);
     trace!(header_contents = ?header_contents);
 
@@ -286,6 +296,42 @@ fn generate_wdf(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
     }
 }
 
+fn generate_gpio(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
+    cfg_if::cfg_if! {
+        if #[cfg(feature = "gpio")] {
+            info!("Generating bindings to WDK: gpio.rs");
+
+            let header_contents = config.bindgen_header_contents([ApiSubset::Base, ApiSubset::Wdf, ApiSubset::Gpio]);
+            trace!(header_contents = ?header_contents);
+
+            let bindgen_builder = {
+                 let mut builder = bindgen::Builder::wdk_default(config)?
+                .with_codegen_config((CodegenConfig::TYPES | CodegenConfig::VARS).complement())
+                .header_contents("gpio-input.h", &header_contents);
+
+                // Only allowlist files in the gpio-specific files to avoid duplicate definitions
+                for header_file in config.headers(ApiSubset::Gpio)
+                {
+                    builder = builder.allowlist_file(format!("(?i).*{header_file}.*"));
+                }
+                builder
+            };
+            trace!(bindgen_builder = ?bindgen_builder);
+
+            Ok(bindgen_builder
+                .generate()
+                .expect("Bindings should succeed to generate")
+                .write_to_file(out_path.join("gpio.rs"))?)
+        } else {
+            let _ = (out_path, config); // Silence unused variable warnings when gpio feature is not enabled
+
+            info!(
+            "Skipping gpio.rs generation since gpio feature is not enabled");
+            Ok(())
+        }
+    }
+}
+
 fn generate_hid(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
     cfg_if::cfg_if! {
         if #[cfg(feature = "hid")] {
@@ -322,6 +368,42 @@ fn generate_hid(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
     }
 }
 
+fn generate_parallel_ports(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
+    cfg_if::cfg_if! {
+        if #[cfg(feature = "parallel-ports")] {
+            info!("Generating bindings to WDK: parallel_ports.rs");
+
+            let header_contents = config.bindgen_header_contents([ApiSubset::Base, ApiSubset::Wdf, ApiSubset::ParallelPorts]);
+            trace!(header_contents = ?header_contents);
+
+            let bindgen_builder = {
+                 let mut builder = bindgen::Builder::wdk_default(config)?
+                .with_codegen_config((CodegenConfig::TYPES | CodegenConfig::VARS).complement())
+                .header_contents("parallel-ports-input.h", &header_contents);
+
+                // Only allowlist files in the parallel-ports-specific files to avoid duplicate definitions
+                for header_file in config.headers(ApiSubset::ParallelPorts)
+                {
+                    builder = builder.allowlist_file(format!("(?i).*{header_file}.*"));
+                }
+                builder
+            };
+            trace!(bindgen_builder = ?bindgen_builder);
+
+            Ok(bindgen_builder
+                .generate()
+                .expect("Bindings should succeed to generate")
+                .write_to_file(out_path.join("parallel_ports.rs"))?)
+        } else {
+            let _ = (out_path, config); // Silence unused variable warnings when parallel-ports feature is not enabled
+
+            info!(
+            "Skipping parallel_ports.rs generation since parallel-ports feature is not enabled");
+            Ok(())
+        }
+    }
+}
+
 fn generate_spb(out_path: &Path, config: &Config) -> Result<(), ConfigError> {
     cfg_if::cfg_if! {
         if #[cfg(feature = "spb")] {

crates/wdk-sys/src/gpio.rs

@@ -0,0 +1,37 @@
+// Copyright (c) Microsoft Corporation
+// License: MIT OR Apache-2.0
+
+//! Direct FFI bindings to GPIO APIs from the Windows Driver Kit (WDK)
+//!
+//! This module contains all bindings to functions, constants, methods,
+//! constructors and destructors in the following headers: `gpio.h`,
+//! `gpioclx.h`. Types are not included in this module, but are available in the
+//! top-level `wdk_sys` module.
+
+#[allow(
+    missing_docs,
+    reason = "most items in the WDK headers have no inline documentation, so bindgen is unable to \
+              generate documentation for their bindings"
+)]
+mod bindings {
+    #[allow(
+        clippy::wildcard_imports,
+        reason = "the underlying c code relies on all type definitions being in scope, which \
+                  results in the bindgen generated code relying on the generated types being in \
+                  scope as well"
+    )]
+    #[allow(
+        unused_imports,
+        reason = "in certain versions of the WDK, there are no functions related to SPB that can \
+                  be generated by bindgen, so these types are unused"
+    )]
+    use crate::types::*;
+
+    include!(concat!(env!("OUT_DIR"), "/gpio.rs"));
+}
+#[allow(
+    unused_imports,
+    reason = "in certain versions of the WDK, there are no functions related to SPB that can be \
+              generated by bindgen, so the `bindings` module is empty"
+)]
+pub use bindings::*;

crates/wdk-sys/src/lib.rs

@@ -23,11 +23,21 @@ pub use crate::{constants::*, types::*};
 #[cfg(any(driver_model__driver_type = "WDM", driver_model__driver_type = "KMDF"))]
 pub mod ntddk;
 
+#[cfg(driver_model__driver_type = "UMDF")]
+pub mod windows;
+
 #[cfg(any(driver_model__driver_type = "KMDF", driver_model__driver_type = "UMDF"))]
 pub mod wdf;
 
-#[cfg(driver_model__driver_type = "UMDF")]
-pub mod windows;
+#[cfg(all(
+    any(
+        driver_model__driver_type = "WDM",
+        driver_model__driver_type = "KMDF",
+        driver_model__driver_type = "UMDF"
+    ),
+    feature = "gpio"
+))]
+pub mod gpio;
 
 #[cfg(all(
     any(
@@ -39,6 +49,16 @@ pub mod windows;
 ))]
 pub mod hid;
 
+#[cfg(all(
+    any(
+        driver_model__driver_type = "WDM",
+        driver_model__driver_type = "KMDF",
+        driver_model__driver_type = "UMDF"
+    ),
+    feature = "parallel-ports"
+))]
+pub mod parallel_ports;
+
 #[cfg(all(
     any(
         driver_model__driver_type = "WDM",

crates/wdk-sys/src/parallel_ports.rs

@@ -0,0 +1,37 @@
+// Copyright (c) Microsoft Corporation
+// License: MIT OR Apache-2.0
+
+//! Direct FFI bindings to Parallel Ports APIs from the Windows Driver Kit (WDK)
+//!
+//! This module contains all bindings to functions, constants, methods,
+//! constructors and destructors in the following headers: `ntddpar.h`,
+//! `ntddser.h`, `parallel.h`. Types are not included in this module, but are
+//! available in the top-level `wdk_sys` module.
+
+#[allow(
+    missing_docs,
+    reason = "most items in the WDK headers have no inline documentation, so bindgen is unable to \
+              generate documentation for their bindings"
+)]
+mod bindings {
+    #[allow(
+        clippy::wildcard_imports,
+        reason = "the underlying c code relies on all type definitions being in scope, which \
+                  results in the bindgen generated code relying on the generated types being in \
+                  scope as well"
+    )]
+    #[allow(
+        unused_imports,
+        reason = "in certain versions of the WDK, there are no functions related to SPB that can \
+                  be generated by bindgen, so these types are unused"
+    )]
+    use crate::types::*;
+
+    include!(concat!(env!("OUT_DIR"), "/parallel_ports.rs"));
+}
+#[allow(
+    unused_imports,
+    reason = "in certain versions of the WDK, there are no functions related to SPB that can be \
+              generated by bindgen, so the `bindings` module is empty"
+)]
+pub use bindings::*;

crates/wdk-sys/src/spb.rs

@@ -23,7 +23,7 @@ mod bindings {
     #[allow(
         unused_imports,
         reason = "in certain versions of the WDK, there are no functions related to SPB that can \
-                  be generated by bindgen, so these types are unused "
+                  be generated by bindgen, so these types are unused"
     )]
     use crate::types::*;
 

examples/sample-kmdf-driver/Cargo.toml

@@ -32,8 +32,10 @@ wdk-sys = { path = "../../crates/wdk-sys", version = "0.3.0" }
 [features]
 default = []
 
+gpio = ["wdk-sys/gpio"]
 hid = ["wdk-sys/hid"]
 spb = ["wdk-sys/spb"]
+parallel-ports = ["wdk-sys/parallel-ports"]
 
 nightly = ["wdk/nightly", "wdk-sys/nightly"]
 

examples/sample-umdf-driver/Cargo.toml

@@ -30,8 +30,10 @@ wdk-sys = { path = "../../crates/wdk-sys", version = "0.3.0" }
 [features]
 default = []
 
+gpio = ["wdk-sys/gpio"]
 hid = ["wdk-sys/hid"]
 spb = ["wdk-sys/spb"]
+parallel-ports = ["wdk-sys/parallel-ports"]
 
 nightly = ["wdk/nightly", "wdk-sys/nightly"]
 

examples/sample-wdm-driver/Cargo.toml

@@ -31,8 +31,10 @@ wdk-sys = { path = "../../crates/wdk-sys", version = "0.3.0" }
 [features]
 default = []
 
+gpio = ["wdk-sys/gpio"]
 hid = ["wdk-sys/hid"]
 spb = ["wdk-sys/spb"]
+parallel-ports = ["wdk-sys/parallel-ports"]
 
 nightly = ["wdk/nightly", "wdk-sys/nightly"]