2 * Non-Volatile Dual In-line Memory Module Virtualization Implementation
4 * Copyright(C) 2015 Intel Corporation.
7 * Xiao Guangrong <guangrong.xiao@linux.intel.com>
9 * NVDIMM specifications and some documents can be found at:
10 * NVDIMM ACPI device and NFIT are introduced in ACPI 6:
11 * http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf
12 * NVDIMM Namespace specification:
13 * http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf
14 * DSM Interface Example:
15 * http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
16 * Driver Writer's Guide:
17 * http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf
19 * This work is licensed under the terms of the GNU GPL, version 2 or later.
20 * See the COPYING file in the top-level directory.
26 #include "hw/mem/pc-dimm.h"
28 #define NVDIMM_DEBUG 0
29 #define nvdimm_debug(fmt, ...) \
32 fprintf(stderr, "nvdimm: " fmt, ## __VA_ARGS__); \
36 #define TYPE_NVDIMM "nvdimm"
38 #define NVDIMM_DSM_MEM_FILE "etc/acpi/nvdimm-mem"
41 * 32 bits IO port starting from 0x0a18 in guest is reserved for
42 * NVDIMM ACPI emulation.
44 #define NVDIMM_ACPI_IO_BASE 0x0a18
45 #define NVDIMM_ACPI_IO_LEN 4
47 struct AcpiNVDIMMState {
48 /* detect if NVDIMM support is enabled. */
51 /* the data of the fw_cfg file NVDIMM_DSM_MEM_FILE. */
53 /* the IO region used by OSPM to transfer control to QEMU. */
56 typedef struct AcpiNVDIMMState AcpiNVDIMMState;
58 void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
59 FWCfgState *fw_cfg, Object *owner);
60 void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,