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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

2
hw/acpi/Makefile.objs
View file

@ -2,7 +2,7 @@ common-obj-$(CONFIG_ACPI_X86) += core.o piix4.o pcihp.o
common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o cpu_hotplug_acpi_table.o
common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o memory_hotplug_acpi_table.o
common-obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
common-obj-$(CONFIG_ACPI) += acpi_interface.o
common-obj-$(CONFIG_ACPI) += bios-linker-loader.o
common-obj-$(CONFIG_ACPI) += aml-build.o

35
hw/acpi/nvdimm.c
View file

@ -29,6 +29,7 @@
#include "qemu/osdep.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/mem/nvdimm.h"
static int nvdimm_plugged_device_list(Object *obj, void *opaque)
@ -370,6 +371,40 @@ static void nvdimm_build_nfit(GSList *device_list, GArray *table_offsets,
g_array_free(structures, true);
}
static uint64_t
nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size)
{
return 0;
}
static void
nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
{
}
static const MemoryRegionOps nvdimm_dsm_ops = {
.read = nvdimm_dsm_read,
.write = nvdimm_dsm_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
FWCfgState *fw_cfg, Object *owner)
{
memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state,
"nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN);
memory_region_add_subregion(io, NVDIMM_ACPI_IO_BASE, &state->io_mr);
state->dsm_mem = g_array_new(false, true /* clear */, 1);
acpi_data_push(state->dsm_mem, TARGET_PAGE_SIZE);
fw_cfg_add_file(fw_cfg, NVDIMM_DSM_MEM_FILE, state->dsm_mem->data,
state->dsm_mem->len);
}
#define NVDIMM_COMMON_DSM "NCAL"
static void nvdimm_build_common_dsm(Aml *dev)