047fc8a1f9
The libnvdimm implementation handles allocating dimm address space (DPA) between PMEM and BLK mode interfaces. After DPA has been allocated from a BLK-region to a BLK-namespace the nd_blk driver attaches to handle I/O as a struct bio based block device. Unlike PMEM, BLK is required to handle platform specific details like mmio register formats and memory controller interleave. For this reason the libnvdimm generic nd_blk driver calls back into the bus provider to carry out the I/O. This initial implementation handles the BLK interface defined by the ACPI 6 NFIT [1] and the NVDIMM DSM Interface Example [2] composed from DCR (dimm control region), BDW (block data window), IDT (interleave descriptor) NFIT structures and the hardware register format. [1]: http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf [2]: http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf Cc: Andy Lutomirski <luto@amacapital.net> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jens Axboe <axboe@fb.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
21 lines
443 B
Makefile
21 lines
443 B
Makefile
obj-$(CONFIG_LIBNVDIMM) += libnvdimm.o
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obj-$(CONFIG_BLK_DEV_PMEM) += nd_pmem.o
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obj-$(CONFIG_ND_BTT) += nd_btt.o
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obj-$(CONFIG_ND_BLK) += nd_blk.o
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nd_pmem-y := pmem.o
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nd_btt-y := btt.o
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nd_blk-y := blk.o
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libnvdimm-y := core.o
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libnvdimm-y += bus.o
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libnvdimm-y += dimm_devs.o
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libnvdimm-y += dimm.o
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libnvdimm-y += region_devs.o
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libnvdimm-y += region.o
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libnvdimm-y += namespace_devs.o
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libnvdimm-y += label.o
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libnvdimm-$(CONFIG_BTT) += btt_devs.o
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