1 files changed, 62 insertions, 0 deletions
diff --git a/qemu/include/hw/mem/nvdimm.h b/qemu/include/hw/mem/nvdimm.h
new file mode 100644
index 000000000..517de9c36
--- /dev/null
+++ b/qemu/include/hw/mem/nvdimm.h
@@ -0,0 +1,62 @@
+/*
+ * Non-Volatile Dual In-line Memory Module Virtualization Implementation
+ *
+ * Copyright(C) 2015 Intel Corporation.
+ *
+ * Author:
+ *  Xiao Guangrong <guangrong.xiao@linux.intel.com>
+ *
+ * NVDIMM specifications and some documents can be found at:
+ * NVDIMM ACPI device and NFIT are introduced in ACPI 6:
+ *      http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf
+ * NVDIMM Namespace specification:
+ *      http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf
+ * DSM Interface Example:
+ *      http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
+ * Driver Writer's Guide:
+ *      http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef QEMU_NVDIMM_H
+#define QEMU_NVDIMM_H
+
+#include "hw/mem/pc-dimm.h"
+
+#define NVDIMM_DEBUG 0
+#define nvdimm_debug(fmt, ...)                                \
+    do {                                                      \
+        if (NVDIMM_DEBUG) {                                   \
+            fprintf(stderr, "nvdimm: " fmt, ## __VA_ARGS__);  \
+        }                                                     \
+    } while (0)
+
+#define TYPE_NVDIMM             "nvdimm"
+
+#define NVDIMM_DSM_MEM_FILE     "etc/acpi/nvdimm-mem"
+
+/*
+ * 32 bits IO port starting from 0x0a18 in guest is reserved for
+ * NVDIMM ACPI emulation.
+ */
+#define NVDIMM_ACPI_IO_BASE     0x0a18
+#define NVDIMM_ACPI_IO_LEN      4
+
+struct AcpiNVDIMMState {
+    /* detect if NVDIMM support is enabled. */
+    bool is_enabled;
+
+    /* the data of the fw_cfg file NVDIMM_DSM_MEM_FILE. */
+    GArray *dsm_mem;
+    /* the IO region used by OSPM to transfer control to QEMU. */
+    MemoryRegion io_mr;
+};
+typedef struct AcpiNVDIMMState AcpiNVDIMMState;
+
+void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
+                            FWCfgState *fw_cfg, Object *owner);
+void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
+                       GArray *linker);
+#endif