1 files changed, 56 insertions, 0 deletions
diff --git a/tools/guest-diag/wall2/vk_memprops.py b/tools/guest-diag/wall2/vk_memprops.py
new file mode 100644
index 0000000..3cf6ba2
--- /dev/null
+++ b/tools/guest-diag/wall2/vk_memprops.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+# vk_memprops.py - enumerate Vulkan devices and dump their memory properties
+# via ctypes (no vkCreateDevice needed; safe alongside other clients).
+import ctypes, ctypes.util, sys
+
+vk = ctypes.CDLL("libvulkan.so.1")
+
+class VkApplicationInfo(ctypes.Structure):
+    _fields_ = [("sType", ctypes.c_uint32), ("pNext", ctypes.c_void_p),
+                ("pApplicationName", ctypes.c_char_p), ("applicationVersion", ctypes.c_uint32),
+                ("pEngineName", ctypes.c_char_p), ("engineVersion", ctypes.c_uint32),
+                ("apiVersion", ctypes.c_uint32)]
+
+class VkInstanceCreateInfo(ctypes.Structure):
+    _fields_ = [("sType", ctypes.c_uint32), ("pNext", ctypes.c_void_p),
+                ("flags", ctypes.c_uint32), ("pApplicationInfo", ctypes.c_void_p),
+                ("enabledLayerCount", ctypes.c_uint32), ("ppEnabledLayerNames", ctypes.c_void_p),
+                ("enabledExtensionCount", ctypes.c_uint32), ("ppEnabledExtensionNames", ctypes.c_void_p)]
+
+class VkMemoryType(ctypes.Structure):
+    _fields_ = [("propertyFlags", ctypes.c_uint32), ("heapIndex", ctypes.c_uint32)]
+
+class VkMemoryHeap(ctypes.Structure):
+    _fields_ = [("size", ctypes.c_uint64), ("flags", ctypes.c_uint32)]
+
+class VkPhysicalDeviceMemoryProperties(ctypes.Structure):
+    _fields_ = [("memoryTypeCount", ctypes.c_uint32),
+                ("memoryTypes", VkMemoryType * 32),
+                ("memoryHeapCount", ctypes.c_uint32),
+                ("memoryHeaps", VkMemoryHeap * 16)]
+
+app = VkApplicationInfo(0, None, b"memprops", 1, b"memprops", 1, 0x401000)
+ci = VkInstanceCreateInfo(1, None, 0, ctypes.cast(ctypes.pointer(app), ctypes.c_void_p), 0, None, 0, None)
+inst = ctypes.c_void_p()
+rc = vk.vkCreateInstance(ctypes.byref(ci), None, ctypes.byref(inst))
+print("vkCreateInstance rc=%d" % rc)
+if rc != 0:
+    sys.exit(1)
+
+n = ctypes.c_uint32(0)
+vk.vkEnumeratePhysicalDevices(inst, ctypes.byref(n), None)
+print("devices=%d" % n.value)
+devs = (ctypes.c_void_p * n.value)()
+vk.vkEnumeratePhysicalDevices(inst, ctypes.byref(n), devs)
+
+for i in range(n.value):
+    props = VkPhysicalDeviceMemoryProperties()
+    vk.vkGetPhysicalDeviceMemoryProperties(devs[i], ctypes.byref(props))
+    print("=== DEV %d phys=0x%x ===" % (i, devs[i] or 0))
+    print("  memoryTypeCount=%d memoryHeapCount=%d" % (props.memoryTypeCount, props.memoryHeapCount))
+    for t in range(props.memoryTypeCount):
+        mt = props.memoryTypes[t]
+        print("  type[%d] flags=0x%08x heap=%d" % (t, mt.propertyFlags, mt.heapIndex))
+    for h in range(props.memoryHeapCount):
+        mh = props.memoryHeaps[h]
+        print("  heap[%d] size=0x%x (%u MiB) flags=0x%x" % (h, mh.size, mh.size >> 20, mh.flags))