diff --git a/nx/include/switch/nvidia/ioctl.h b/nx/include/switch/nvidia/ioctl.h
index 0506eb49..4273747a 100644
--- a/nx/include/switch/nvidia/ioctl.h
+++ b/nx/include/switch/nvidia/ioctl.h
@@ -106,6 +106,15 @@ typedef struct {
     };
 } nvioctl_gpfifo_entry;
 
+// Used with nvioctlMap_Param().
+typedef enum nvioctl_map_param {
+    NvMapParam_Size = 1,
+    NvMapParam_Alignment = 2,
+    NvMapParam_Base = 3,
+    NvMapParam_Heap = 4,
+    NvMapParam_Kind = 5
+} NvMapParam;
+
 // Used with nvioctlChannel_AllocObjCtx().
 typedef enum nvioctl_channel_obj_classnum {
     NvClassNumber_2D = 0x902D,
@@ -189,6 +198,7 @@ Result nvioctlNvmap_Create(u32 fd, u32 size, u32 *nvmap_handle);
 Result nvioctlNvmap_FromId(u32 fd, u32 id, u32 *nvmap_handle);
 Result nvioctlNvmap_Alloc(u32 fd, u32 nvmap_handle, u32 heapmask, u32 flags, u32 align, u8 kind, void* addr);
 Result nvioctlNvmap_Free(u32 fd, u32 nvmap_handle);
+Result nvioctlMap_Param(u32 fd, u32 nvmap_handle, NvMapParam param, u32 *result);
 Result nvioctlNvmap_GetId(u32 fd, u32 nvmap_handle, u32 *id);
 
 Result nvioctlChannel_SetNvmapFd(u32 fd, u32 nvmap_fd);
diff --git a/nx/source/nvidia/ioctl/nvmap.c b/nx/source/nvidia/ioctl/nvmap.c
index c5f84405..68110e7b 100644
--- a/nx/source/nvidia/ioctl/nvmap.c
+++ b/nx/source/nvidia/ioctl/nvmap.c
@@ -81,6 +81,28 @@ Result nvioctlNvmap_Free(u32 fd, u32 nvmap_handle) {
     return nvIoctl(fd, _NV_IOWR(0x01, 0x05, data), &data);
 }
 
+Result nvioctlMap_Param(u32 fd, u32 nvmap_handle, NvMapParam param, u32 *result) {
+    Result rc=0;
+
+    struct {
+        __nv_in  u32 handle;
+        __nv_in  u32 param;
+        __nv_out u32 result;
+    } data;
+
+    memset(&data, 0, sizeof(data));
+    data.handle = nvmap_handle;
+    data.param = param;
+
+    rc = nvIoctl(fd, _NV_IOWR(0x01, 0x09, data), &data);
+
+    if (R_SUCCEEDED(rc)) {
+        *result = data.result;
+    }
+
+    return rc;
+}
+
 Result nvioctlNvmap_GetId(u32 fd, u32 nvmap_handle, u32 *id) {
     Result rc=0;