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| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2016-03-05 00:00:32 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-03-11 16:59:11 +0200 |
| commit | 5fe79386ba3cdc86fd808dde301bfc5bb7e9bded (patch) | |
| tree | e7a34f6f571a257bc39b6323dc2b4aa7f27017b2 /hw/acpi | |
| parent | b63283d7c37ab1d08ee48ce34978fa2e95b27b7b (diff) | |
| download | qemu-5fe79386ba3cdc86fd808dde301bfc5bb7e9bded.tar.gz qemu-5fe79386ba3cdc86fd808dde301bfc5bb7e9bded.tar.bz2 qemu-5fe79386ba3cdc86fd808dde301bfc5bb7e9bded.zip | |
nvdimm acpi: initialize the resource used by NVDIMM ACPI
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>
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/acpi/nvdimm.c | 35 |
2 files changed, 36 insertions, 1 deletions
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs index f3ade9a28e..faee86c5c4 100644 --- a/hw/acpi/Makefile.objs +++ b/hw/acpi/Makefile.objs @@ -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 diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 49ee68e614..8568b20341 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -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) |