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/*
* 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
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