diff options
Diffstat (limited to 'include/hw/mem')
| -rw-r--r-- | include/hw/mem/nvdimm.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h index 1cfe9e01c4..33cd421ace 100644 --- a/include/hw/mem/nvdimm.h +++ b/include/hw/mem/nvdimm.h @@ -98,12 +98,35 @@ typedef struct NVDIMMClass NVDIMMClass; #define NVDIMM_ACPI_IO_BASE 0x0a18 #define NVDIMM_ACPI_IO_LEN 4 +/* + * The buffer, @fit, saves the FIT info for all the presented NVDIMM + * devices which is updated after the NVDIMM device is plugged or + * unplugged. + * + * Rules to use the buffer: + * 1) the user should hold the @lock to access the buffer. + * 2) mark @dirty whenever the buffer is updated. + * + * These rules preserve NVDIMM ACPI _FIT method to read incomplete + * or obsolete fit info if fit update happens during multiple RFIT + * calls. + */ +struct NvdimmFitBuffer { + QemuMutex lock; + GArray *fit; + bool dirty; +}; +typedef struct NvdimmFitBuffer NvdimmFitBuffer; + 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; + + NvdimmFitBuffer fit_buf; + /* the IO region used by OSPM to transfer control to QEMU. */ MemoryRegion io_mr; }; @@ -112,5 +135,7 @@ 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, - BIOSLinker *linker, GArray *dsm_dma_arrea); + BIOSLinker *linker, AcpiNVDIMMState *state, + uint32_t ram_slots); +void nvdimm_acpi_hotplug(AcpiNVDIMMState *state); #endif |