Index: head/sys/dev/aac/aac.c
===================================================================
--- head/sys/dev/aac/aac.c
+++ head/sys/dev/aac/aac.c
@@ -38,6 +38,7 @@
 #define AAC_DRIVERNAME			"aac"
 
 #include "opt_aac.h"
+#include "opt_compat.h"
 
 /* #include <stddef.h> */
 #include <sys/param.h>
@@ -45,7 +46,9 @@
 #include <sys/malloc.h>
 #include <sys/kernel.h>
 #include <sys/kthread.h>
+#include <sys/proc.h>
 #include <sys/sysctl.h>
+#include <sys/sysent.h>
 #include <sys/poll.h>
 #include <sys/ioccom.h>
 
@@ -3521,7 +3524,19 @@
 
 	fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 
-	if ((error = copyin(arg, &agf, sizeof(agf))) == 0) {
+#ifdef COMPAT_FREEBSD32
+	if (SV_CURPROC_FLAG(SV_ILP32)) {
+		struct get_adapter_fib_ioctl32 agf32;
+		error = copyin(arg, &agf32, sizeof(agf32));
+		if (error == 0) {
+			agf.AdapterFibContext = agf32.AdapterFibContext;
+			agf.Wait = agf32.Wait;
+			agf.AifFib = (caddr_t)(uintptr_t)agf32.AifFib;
+		}
+	} else
+#endif
+		error = copyin(arg, &agf, sizeof(agf));
+	if (error == 0) {
 		for (ctx = sc->fibctx; ctx; ctx = ctx->next) {
 			if (agf.AdapterFibContext == ctx->unique)
 				break;
Index: head/sys/dev/aacraid/aacraid.c
===================================================================
--- head/sys/dev/aacraid/aacraid.c
+++ head/sys/dev/aacraid/aacraid.c
@@ -39,6 +39,7 @@
 #define AAC_DRIVERNAME			"aacraid"
 
 #include "opt_aacraid.h"
+#include "opt_compat.h"
 
 /* #include <stddef.h> */
 #include <sys/param.h>
@@ -46,7 +47,9 @@
 #include <sys/malloc.h>
 #include <sys/kernel.h>
 #include <sys/kthread.h>
+#include <sys/proc.h>
 #include <sys/sysctl.h>
+#include <sys/sysent.h>
 #include <sys/poll.h>
 #include <sys/ioccom.h>
 
@@ -3381,7 +3384,19 @@
 	fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 
 	mtx_lock(&sc->aac_io_lock);
-	if ((error = copyin(arg, &agf, sizeof(agf))) == 0) {
+#ifdef COMPAT_FREEBSD32
+	if (SV_CURPROC_FLAG(SV_ILP32)) {
+		struct get_adapter_fib_ioctl32 agf32;
+		error = copyin(arg, &agf32, sizeof(agf32));
+		if (error == 0) {
+			agf.AdapterFibContext = agf32.AdapterFibContext;
+			agf.Wait = agf32.Wait;
+			agf.AifFib = (caddr_t)(uintptr_t)agf32.AifFib;
+		}
+	} else
+#endif
+		error = copyin(arg, &agf, sizeof(agf));
+	if (error == 0) {
 		for (ctx = sc->fibctx; ctx; ctx = ctx->next) {
 			if (agf.AdapterFibContext == ctx->unique)
 				break;
Index: head/sys/modules/aac/Makefile
===================================================================
--- head/sys/modules/aac/Makefile
+++ head/sys/modules/aac/Makefile
@@ -8,7 +8,7 @@
 
 KMOD=	aac
 SRCS=	aac.c aac_pci.c aac_disk.c aac_cam.c
-SRCS+=	opt_scsi.h opt_cam.h opt_aac.h
+SRCS+=	opt_scsi.h opt_cam.h opt_compat.h opt_aac.h
 SRCS+=	device_if.h bus_if.h pci_if.h
 
 # To enable debug output from the driver, uncomment these two lines.
Index: head/sys/modules/aacraid/Makefile
===================================================================
--- head/sys/modules/aacraid/Makefile
+++ head/sys/modules/aacraid/Makefile
@@ -8,7 +8,7 @@
 
 KMOD=	aacraid
 SRCS=	aacraid.c aacraid_pci.c aacraid_cam.c
-SRCS+=	opt_scsi.h opt_cam.h opt_aacraid.h
+SRCS+=	opt_scsi.h opt_cam.h opt_compat.h opt_aacraid.h
 SRCS+=	device_if.h bus_if.h pci_if.h
 
 # To enable debug output from the driver, uncomment these two lines.
Index: head/sys/sys/aac_ioctl.h
===================================================================
--- head/sys/sys/aac_ioctl.h
+++ head/sys/sys/aac_ioctl.h
@@ -175,6 +175,14 @@
 	caddr_t		AifFib;
 };
 
+#ifdef _KERNEL
+struct get_adapter_fib_ioctl32 {
+	u_int32_t	AdapterFibContext;
+	int	  	Wait;
+	u_int32_t	AifFib;
+};
+#endif
+
 struct aac_query_disk {
 	int32_t		ContainerNumber;
 	int32_t		Bus;