diff --git a/uefi-raw/CHANGELOG.md b/uefi-raw/CHANGELOG.md
index 8ff7108cd..bc3f286a1 100644
--- a/uefi-raw/CHANGELOG.md
+++ b/uefi-raw/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Added `protocol::network::pxe` module.
 - Added conversions between `MacAddress` and the `[u8; 6]` type that's more commonly used to represent MAC addresses.
 - Added `DiskInfoProtocol`.
+- Added `ExtScsiPassThruProtocol`.
 
 
 # uefi-raw - 0.10.0 (2025-02-07)
diff --git a/uefi-raw/src/protocol/scsi.rs b/uefi-raw/src/protocol/scsi.rs
index 923259cf7..d3c1537e4 100644
--- a/uefi-raw/src/protocol/scsi.rs
+++ b/uefi-raw/src/protocol/scsi.rs
@@ -1,8 +1,11 @@
 // SPDX-License-Identifier: MIT OR Apache-2.0
 
+use super::device_path::DevicePathProtocol;
 use crate::{guid, Event, Guid, Status};
 use core::ffi::c_void;
 
+pub const SCSI_TARGET_MAX_BYTES: usize = 0x10;
+
 newtype_enum! {
     /// Corresponds to the `EFI_SCSI_IO_TYPE_*` defines.
     #[derive(Default)]
@@ -111,3 +114,47 @@ pub struct ScsiIoProtocol {
 impl ScsiIoProtocol {
     pub const GUID: Guid = guid!("932f47e6-2362-4002-803e-3cd54b138f85");
 }
+
+#[derive(Clone, Debug)]
+#[repr(C)]
+pub struct ExtScsiPassThruMode {
+    pub adapter_id: u32,
+    pub attributes: u32,
+    pub io_align: u32,
+}
+
+#[derive(Debug)]
+#[repr(C)]
+pub struct ExtScsiPassThruProtocol {
+    pub passthru_mode: *const ExtScsiPassThruMode,
+    pub pass_thru: unsafe extern "efiapi" fn(
+        this: *const Self,
+        target: *const u8,
+        lun: u64,
+        packet: *mut ScsiIoScsiRequestPacket,
+        event: Event,
+    ) -> Status,
+    pub get_next_target_lun:
+        unsafe extern "efiapi" fn(this: *const Self, target: *mut *mut u8, lun: *mut u64) -> Status,
+    pub build_device_path: unsafe extern "efiapi" fn(
+        this: *const Self,
+        target: *const u8,
+        lun: u64,
+        device_path: *mut *const DevicePathProtocol,
+    ) -> Status,
+    pub get_target_lun: unsafe extern "efiapi" fn(
+        this: *const Self,
+        device_path: *const DevicePathProtocol,
+        target: *mut *const u8,
+        lun: *mut u64,
+    ) -> Status,
+    pub reset_channel: unsafe extern "efiapi" fn(this: *mut Self) -> Status,
+    pub reset_target_lun:
+        unsafe extern "efiapi" fn(this: *mut Self, target: *const u8, lun: u64) -> Status,
+    pub get_next_target:
+        unsafe extern "efiapi" fn(this: *const Self, target: *mut *mut u8) -> Status,
+}
+
+impl ExtScsiPassThruProtocol {
+    pub const GUID: Guid = guid!("143b7632-b81b-4cb7-abd3-b625a5b9bffe");
+}