1 files changed, 61 insertions, 0 deletions
diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h
new file mode 100644
index 0000000000..21d28ca110
--- /dev/null
+++ b/include/hw/cxl/cxl.h
@@ -0,0 +1,61 @@
+/*
+ * QEMU CXL Support
+ *
+ * Copyright (c) 2020 Intel
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ */
+
+#ifndef CXL_H
+#define CXL_H
+
+
+#include "qapi/qapi-types-machine.h"
+#include "hw/pci/pci_bridge.h"
+#include "hw/pci/pci_host.h"
+#include "cxl_pci.h"
+#include "cxl_component.h"
+#include "cxl_device.h"
+
+#define CXL_COMPONENT_REG_BAR_IDX 0
+#define CXL_DEVICE_REG_BAR_IDX 2
+
+#define CXL_WINDOW_MAX 10
+
+typedef struct CXLFixedWindow {
+    uint64_t size;
+    char **targets;
+    struct PXBDev *target_hbs[8];
+    uint8_t num_targets;
+    uint8_t enc_int_ways;
+    uint8_t enc_int_gran;
+    /* Todo: XOR based interleaving */
+    MemoryRegion mr;
+    hwaddr base;
+} CXLFixedWindow;
+
+typedef struct CXLState {
+    bool is_enabled;
+    MemoryRegion host_mr;
+    unsigned int next_mr_idx;
+    GList *fixed_windows;
+} CXLState;
+
+struct CXLHost {
+    PCIHostState parent_obj;
+
+    CXLComponentState cxl_cstate;
+};
+
+#define TYPE_PXB_CXL_HOST "pxb-cxl-host"
+OBJECT_DECLARE_SIMPLE_TYPE(CXLHost, PXB_CXL_HOST)
+
+void cxl_fixed_memory_window_config(MachineState *ms,
+                                    CXLFixedMemoryWindowOptions *object,
+                                    Error **errp);
+void cxl_fixed_memory_window_link_targets(Error **errp);
+
+extern const MemoryRegionOps cfmws_ops;
+
+#endif