diff --git a/hw/xbox/mcpx/apu_int.h b/hw/xbox/mcpx/apu_int.h
index f25ae48b07..ee9de99d32 100644
--- a/hw/xbox/mcpx/apu_int.h
+++ b/hw/xbox/mcpx/apu_int.h
@@ -37,15 +37,12 @@
 #include "ui/xemu-settings.h"
 
 #include "trace.h"
-#include "dsp/dsp.h"
-#include "dsp/dsp_dma.h"
-#include "dsp/dsp_cpu.h"
-#include "dsp/dsp_state.h"
 #include "apu.h"
 #include "apu_regs.h"
 #include "apu_debug.h"
 #include "fpconv.h"
 #include "vp/vp.h"
+#include "dsp.h"
 
 #define GET_MASK(v, mask) (((v) & (mask)) >> ctz32(mask))
 
@@ -98,20 +95,10 @@ typedef struct MCPXAPUState {
     MCPXAPUVPState vp;
 
     /* Global Processor */
-    struct {
-        bool realtime;
-        MemoryRegion mmio;
-        DSPState *dsp;
-        uint32_t regs[0x10000];
-    } gp;
+    MCPXAPUGPState gp;
 
     /* Encode Processor */
-    struct {
-        bool realtime;
-        MemoryRegion mmio;
-        DSPState *dsp;
-        uint32_t regs[0x10000];
-    } ep;
+    MCPXAPUEPState ep;
 
     uint32_t regs[0x20000];
 
@@ -134,11 +121,4 @@ extern uint64_t g_dbg_muted_voices[4];
 void mcpx_debug_begin_frame(void);
 void mcpx_debug_end_frame(void);
 
-extern const MemoryRegionOps gp_ops;
-extern const MemoryRegionOps ep_ops;
-
-void mcpx_apu_dsp_init(MCPXAPUState *d);
-void mcpx_apu_update_dsp_preference(MCPXAPUState *d);
-void mcpx_apu_dsp_frame(MCPXAPUState *d, float mixbins[NUM_MIXBINS][NUM_SAMPLES_PER_FRAME]);
-
 #endif
diff --git a/hw/xbox/mcpx/dsp.h b/hw/xbox/mcpx/dsp.h
new file mode 100644
index 0000000000..7bf49f4f11
--- /dev/null
+++ b/hw/xbox/mcpx/dsp.h
@@ -0,0 +1,57 @@
+/*
+ * QEMU MCPX Audio Processing Unit implementation
+ *
+ * Copyright (c) 2012 espes
+ * Copyright (c) 2018-2019 Jannik Vogel
+ * Copyright (c) 2019-2025 Matt Borgerson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef HW_XBOX_MCPX_APU_DSP_H
+#define HW_XBOX_MCPX_APU_DSP_H
+
+#include "qemu/osdep.h"
+#include "hw/hw.h"
+#include "hw/pci/pci.h"
+#include "hw/xbox/mcpx/apu_regs.h"
+
+#include "dsp/dsp.h"
+#include "dsp/dsp_dma.h"
+#include "dsp/dsp_cpu.h"
+#include "dsp/dsp_state.h"
+
+typedef struct MCPXAPUState MCPXAPUState;
+
+typedef struct MCPXAPUGPState {
+    bool realtime;
+    MemoryRegion mmio;
+    DSPState *dsp;
+    uint32_t regs[0x10000];
+} MCPXAPUGPState;
+
+typedef struct MCPXAPUEPState {
+    bool realtime;
+    MemoryRegion mmio;
+    DSPState *dsp;
+    uint32_t regs[0x10000];
+} MCPXAPUEPState;
+
+extern const MemoryRegionOps gp_ops;
+extern const MemoryRegionOps ep_ops;
+
+void mcpx_apu_dsp_init(MCPXAPUState *d);
+void mcpx_apu_update_dsp_preference(MCPXAPUState *d);
+void mcpx_apu_dsp_frame(MCPXAPUState *d, float mixbins[NUM_MIXBINS][NUM_SAMPLES_PER_FRAME]);
+
+#endif
diff --git a/hw/xbox/mcpx/vp/vp.h b/hw/xbox/mcpx/vp/vp.h
index 808a8d57fd..6e185fe651 100644
--- a/hw/xbox/mcpx/vp/vp.h
+++ b/hw/xbox/mcpx/vp/vp.h
@@ -100,6 +100,9 @@ typedef struct {
             float itd;
         } entries[HRTF_ENTRY_COUNT];
     } hrtf;
+
+    uint32_t inbuf_sge_handle; //FIXME: Where is this stored?
+    uint32_t outbuf_sge_handle; //FIXME: Where is this stored?
 } MCPXAPUVPState;
 
 extern const MemoryRegionOps vp_ops;