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nvdimm acpi: initialize the resource used by NVDIMM ACPI

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32 bits IO port starting from 0x0a18 in guest is reserved for NVDIMM
ACPI emulation. The table, NVDIMM_DSM_MEM_FILE, will be patched into
NVDIMM ACPI binary code

OSPM uses this port to tell QEMU the final address of the DSM memory
and notify QEMU to emulate the DSM method

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xiao Guangrong 2016-03-05 00:00:32 +08:00 • committed by Michael S. Tsirkin
parent b63283d7c3
commit 5fe79386ba
8 changed files with 78 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/hw/i386/pc.h
View file

@ -17,6 +17,7 @@
#include "hw/boards.h"
#include "hw/compat.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
#define HPET_INTCAP "hpet-intcap"
@ -57,7 +58,8 @@ struct PCMachineState {
uint64_t max_ram_below_4g;
OnOffAuto vmport;
OnOffAuto smm;
bool nvdimm;
AcpiNVDIMMState acpi_nvdimm_state;
/* RAM information (sizes, addresses, configuration): */
ram_addr_t below_4g_mem_size, above_4g_mem_size;

24
include/hw/mem/nvdimm.h
View file

@ -25,8 +25,30 @@
#include "hw/mem/pc-dimm.h"
#define TYPE_NVDIMM "nvdimm"
#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