The following is a list of reference material:

Documents

See the latest documentation for the NVDIMM kernel sub-system here: https://git.kernel.org/cgit/linux/kernel/git/nvdimm/nvdimm.git/tree/Documentation/nvdimm/nvdimm.txt?h=libnvdimm-for-next​

ACPI v6.0: http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf ​

ACPI Specification (Latest): http://www.uefi.org/specifications​

NVDIMM DSM Interface Specification (v1.8): http://pmem.io/documents/NVDIMM_DSM_Interface-V1.8.pdf​

NVDIMM DSM Interface Example: http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf ​

NVDIMM Driver Writer's Guide: http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf​

NVDIMM Namespace: http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf ​

UEFI Specification (Latest): http://www.uefi.org/specifications​

Source Code Repositories

LIBNVDIMM: https://git.kernel.org/cgit/linux/kernel/git/djbw/nvdimm.git ​

LIBNDCTL: https://github.com/pmem/ndctl.git ​

NDCTL: https://github.com/pmem/ndctl​

PMEM: https://github.com/01org/prd​