1 /* 2 * QEMU PowerPC PAPR SCM backend definitions 3 * 4 * Copyright (c) 2020, IBM Corporation. 5 * 6 * This code is licensed under the GPL version 2 or later. See the 7 * COPYING file in the top-level directory. 8 */ 9 10 #ifndef HW_SPAPR_NVDIMM_H 11 #define HW_SPAPR_NVDIMM_H 12 13 #include "hw/mem/nvdimm.h" 14 #include "hw/ppc/spapr.h" 15 16 /* 17 * The nvdimm size should be aligned to SCM block size. 18 * The SCM block size should be aligned to SPAPR_MEMORY_BLOCK_SIZE 19 * inorder to have SCM regions not to overlap with dimm memory regions. 20 * The SCM devices can have variable block sizes. For now, fixing the 21 * block size to the minimum value. 22 */ 23 #define SPAPR_MINIMUM_SCM_BLOCK_SIZE SPAPR_MEMORY_BLOCK_SIZE 24 25 /* Have an explicit check for alignment */ 26 QEMU_BUILD_BUG_ON(SPAPR_MINIMUM_SCM_BLOCK_SIZE % SPAPR_MEMORY_BLOCK_SIZE); 27 28 int spapr_pmem_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 29 void *fdt, int *fdt_start_offset, Error **errp); 30 void spapr_dt_persistent_memory(SpaprMachineState *spapr, void *fdt); 31 bool spapr_nvdimm_validate(HotplugHandler *hotplug_dev, NVDIMMDevice *nvdimm, 32 uint64_t size, Error **errp); 33 bool spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp); 34 35 #endif 36