include/hw/ppc/spapr_nvdimm.h

   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