diff --git a/pcid/src/config.rs b/pcid/src/config.rs
index 8278f33c3c..c9610f667c 100644
--- a/pcid/src/config.rs
+++ b/pcid/src/config.rs
@@ -3,7 +3,7 @@ use std::ops::Range;
 
 use serde::Deserialize;
 
-use crate::driver_interface::FullDeviceId;
+use pcid_interface::FullDeviceId;
 
 #[derive(Clone, Debug, Default, Deserialize)]
 pub struct Config {
diff --git a/pcid/src/driver_handler.rs b/pcid/src/driver_handler.rs
index 4374df9387..7b3098101a 100644
--- a/pcid/src/driver_handler.rs
+++ b/pcid/src/driver_handler.rs
@@ -8,7 +8,6 @@ use log::{error, info};
 use pci_types::capability::{MultipleMessageSupport, PciCapability};
 use pci_types::{ConfigRegionAccess, PciAddress};
 
-use crate::driver_interface;
 use crate::State;
 
 pub struct DriverHandler {
@@ -21,11 +20,11 @@ pub struct DriverHandler {
 impl DriverHandler {
     pub fn spawn(
         state: Arc<State>,
-        func: driver_interface::PciFunction,
+        func: pcid_interface::PciFunction,
         capabilities: Vec<PciCapability>,
         args: &[String],
     ) {
-        let subdriver_args = driver_interface::SubdriverArguments { func };
+        let subdriver_args = pcid_interface::SubdriverArguments { func };
 
         let mut args = args.iter();
         if let Some(program) = args.next() {
@@ -94,11 +93,12 @@ impl DriverHandler {
 
     fn respond(
         &mut self,
-        request: driver_interface::PcidClientRequest,
-        args: &driver_interface::SubdriverArguments,
-    ) -> driver_interface::PcidClientResponse {
-        use driver_interface::*;
+        request: pcid_interface::PcidClientRequest,
+        args: &pcid_interface::SubdriverArguments,
+    ) -> pcid_interface::PcidClientResponse {
+        use pcid_interface::*;
 
+        #[forbid(non_exhaustive_omitted_patterns)]
         match request {
             PcidClientRequest::RequestVendorCapabilities => PcidClientResponse::VendorCapabilities(
                 self.capabilities
@@ -320,6 +320,7 @@ impl DriverHandler {
                         );
                     }
                 }
+                _ => unreachable!(),
             },
             PcidClientRequest::ReadConfig(offset) => {
                 let value = unsafe { self.state.pcie.read(self.addr, offset) };
@@ -331,15 +332,16 @@ impl DriverHandler {
                 }
                 return PcidClientResponse::WriteConfig;
             }
+            _ => unreachable!(),
         }
     }
     fn handle_spawn(
         mut self,
         pcid_to_client_write: usize,
         pcid_from_client_read: usize,
-        args: driver_interface::SubdriverArguments,
+        args: pcid_interface::SubdriverArguments,
     ) {
-        use driver_interface::*;
+        use pcid_interface::*;
 
         let mut pcid_to_client = unsafe { File::from_raw_fd(pcid_to_client_write as RawFd) };
         let mut pcid_from_client = unsafe { File::from_raw_fd(pcid_from_client_read as RawFd) };
diff --git a/pcid/src/driver_interface/cap.rs b/pcid/src/driver_interface/cap.rs
index d03e6ff520..aa3f5540de 100644
--- a/pcid/src/driver_interface/cap.rs
+++ b/pcid/src/driver_interface/cap.rs
@@ -8,7 +8,7 @@ pub struct VendorSpecificCapability {
 }
 
 impl VendorSpecificCapability {
-    pub(crate) unsafe fn parse(
+    pub unsafe fn parse(
         addr: PciCapabilityAddress,
         access: &dyn ConfigRegionAccess,
     ) -> Self {
diff --git a/pcid/src/driver_interface/id.rs b/pcid/src/driver_interface/id.rs
index 307efc955a..7b4ec84444 100644
--- a/pcid/src/driver_interface/id.rs
+++ b/pcid/src/driver_interface/id.rs
@@ -13,7 +13,7 @@ pub struct FullDeviceId {
 }
 
 impl FullDeviceId {
-    pub(crate) fn display(&self) -> String {
+    pub fn display(&self) -> String {
         let mut string = format!(
             "{:>04X}:{:>04X} {:>02X}.{:>02X}.{:>02X}.{:>02X} {:?}",
             self.vendor_id,
diff --git a/pcid/src/driver_interface/irq_helpers.rs b/pcid/src/driver_interface/irq_helpers.rs
index 2624be2951..82f444eabe 100644
--- a/pcid/src/driver_interface/irq_helpers.rs
+++ b/pcid/src/driver_interface/irq_helpers.rs
@@ -194,5 +194,5 @@ pub fn allocate_single_interrupt_vector_for_msi(cpu_id: usize) -> (MsiAddrAndDat
     let msg_data =
         x86_msix::message_data_edge_triggered(x86_msix::DeliveryMode::Fixed, vector);
 
-    (MsiAddrAndData::new(addr, msg_data), interrupt_handle)
+    (MsiAddrAndData { addr, data: msg_data }, interrupt_handle)
 }
diff --git a/pcid/src/driver_interface/mod.rs b/pcid/src/driver_interface/mod.rs
index fd9792a270..ece101d3bb 100644
--- a/pcid/src/driver_interface/mod.rs
+++ b/pcid/src/driver_interface/mod.rs
@@ -21,7 +21,7 @@ pub mod irq_helpers;
 pub mod msi;
 
 #[derive(Clone, Copy, Debug, Serialize, Deserialize)]
-pub struct LegacyInterruptLine(pub(crate) u8);
+pub struct LegacyInterruptLine(#[doc(hidden)] pub u8);
 
 impl LegacyInterruptLine {
     /// Get an IRQ handle for this interrupt line.
@@ -257,7 +257,8 @@ pub struct PciFunctionHandle {
     mapped_bars: [Option<MappedBar>; 6],
 }
 
-pub(crate) fn send<W: Write, T: Serialize>(w: &mut W, message: &T) -> Result<()> {
+#[doc(hidden)]
+pub fn send<W: Write, T: Serialize>(w: &mut W, message: &T) -> Result<()> {
     let mut data = Vec::new();
     bincode::serialize_into(&mut data, message)?;
     let length_bytes = u64::to_le_bytes(data.len() as u64);
@@ -265,7 +266,8 @@ pub(crate) fn send<W: Write, T: Serialize>(w: &mut W, message: &T) -> Result<()>
     w.write_all(&data)?;
     Ok(())
 }
-pub(crate) fn recv<R: Read, T: DeserializeOwned>(r: &mut R) -> Result<T> {
+#[doc(hidden)]
+pub fn recv<R: Read, T: DeserializeOwned>(r: &mut R) -> Result<T> {
     let mut length_bytes = [0u8; 8];
     r.read_exact(&mut length_bytes)?;
     let length = u64::from_le_bytes(length_bytes);
diff --git a/pcid/src/driver_interface/msi.rs b/pcid/src/driver_interface/msi.rs
index 0a625d53e0..cba4d21399 100644
--- a/pcid/src/driver_interface/msi.rs
+++ b/pcid/src/driver_interface/msi.rs
@@ -11,14 +11,8 @@ use syscall::{Io, Mmio};
 /// For MSI-X you can have a single [MsiEntry] for each interrupt vector.
 #[derive(Debug, Default, Serialize, Deserialize)]
 pub struct MsiAddrAndData {
-    pub(crate) addr: u64,
-    pub(crate) data: u32,
-}
-
-impl MsiAddrAndData {
-    pub fn new(addr: u64, data: u32) -> Self {
-        MsiAddrAndData { addr, data }
-    }
+    pub addr: u64,
+    pub data: u32,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
diff --git a/pcid/src/main.rs b/pcid/src/main.rs
index 7a6df7d091..e392ba37b0 100644
--- a/pcid/src/main.rs
+++ b/pcid/src/main.rs
@@ -1,3 +1,5 @@
+#![feature(non_exhaustive_omitted_patterns_lint)]
+
 use std::fs::{metadata, read_dir, File};
 use std::io::prelude::*;
 use std::sync::{Arc, Mutex};
@@ -13,12 +15,11 @@ use structopt::StructOpt;
 
 use crate::cfg_access::Pcie;
 use crate::config::Config;
-use crate::driver_interface::{FullDeviceId, LegacyInterruptLine, PciBar};
+use pcid_interface::{FullDeviceId, LegacyInterruptLine, PciBar};
 
 mod cfg_access;
 mod config;
 mod driver_handler;
-mod driver_interface;
 
 #[derive(StructOpt)]
 #[structopt(about)]
@@ -150,7 +151,7 @@ fn handle_parsed_header(
             capabilities
         );
 
-        let func = driver_interface::PciFunction {
+        let func = pcid_interface::PciFunction {
             bars,
             addr: endpoint_header.header().address(),
             legacy_interrupt_line: if legacy_interrupt_enabled {