user/sven/linux.git/include/linux/libnvdimm.h, branch v4.19.274

libnvdimm: Add of_node to region and bus descriptors

2018-04-07T14:53:23Z

We want to be able to cross reference the region and bus devices with the device tree node that they were spawned from. libNVDIMM handles creating the actual devices for these internally, so we need to pass in a pointer to the relevant node in the descriptor. Signed-off-by: Oliver O'Halloran Acked-by: Dan Williams Acked-by: Balbir Singh Signed-off-by: Dan Williams

libnvdimm: add an api to cast a 'struct nd_region' to its 'struct device'

2018-04-03T18:51:42Z

For debug, it is useful for bus providers to be able to retrieve the 'struct device' associated with an nd_region instance that it registered. We already have to_nd_region() to perform the reverse cast operation, in fact its duplicate declaration can be removed from the private drivers/nvdimm/nd.h header. Reviewed-by: Dave Jiang Signed-off-by: Dan Williams

acpi: nfit: add persistent memory control flag for nd_region

2018-02-01T22:01:15Z

Propagate the ADR attribute flag from the NFIT platform capabilities sub-table to nd_region. Signed-off-by: Dave Jiang Reviewed-by: Ross Zwisler Signed-off-by: Ross Zwisler

acpi: nfit: Add support for detect platform CPU cache flush on power loss

2018-02-01T22:01:15Z

In ACPI 6.2a the platform capability structure has been added to the NFIT tables. That provides software the ability to determine whether a system supports the auto flushing of CPU caches on power loss. If the capability is supported, we do not need to do dax_flush(). Plumbing the path to set the property on per region from the NFIT tables. This patch depends on the ACPI NFIT 6.2a platform capabilities support code in include/acpi/actbl1.h. Signed-off-by: Dave Jiang Reviewed-by: Ross Zwisler Signed-off-by: Ross Zwisler

libnvdimm: move poison list functions to a new 'badrange' file

2017-11-02T17:42:30Z

nfit_test needs to use the poison list manipulation code as well. Make it more generic and in the process rename poison to badrange, and move all the related helpers to a new file. Signed-off-by: Dave Jiang [vishal: Add badrange.o to nfit_test's Kbuild] [vishal: add a missed include in bus.c for the new badrange functions] [vishal: rename all instances of 'be' to 'bre'] Signed-off-by: Vishal Verma Signed-off-by: Dan Williams

libnvdimm, nd_blk: remove mmio_flush_range()

2017-08-31T22:05:10Z

mmio_flush_range() suffers from a lack of clearly-defined semantics, and is somewhat ambiguous to port to other architectures where the scope of the writeback implied by "flush" and ordering might matter, but MMIO would tend to imply non-cacheable anyway. Per the rationale in 67a3e8fe9015 ("nd_blk: change aperture mapping from WC to WB"), the only existing use is actually to invalidate clean cache lines for ARCH_MEMREMAP_PMEM type mappings *without* writeback. Since the recent cleanup of the pmem API, that also now happens to be the exact purpose of arch_invalidate_pmem(), which would be a far more well-defined tool for the job. Rather than risk potentially inconsistent implementations of mmio_flush_range() for the sake of one callsite, streamline things by removing it entirely and instead move the ARCH_MEMREMAP_PMEM related definitions up to the libnvdimm level, so they can be shared by NFIT as well. This allows NFIT to be enabled for arm64. Signed-off-by: Robin Murphy Signed-off-by: Dan Williams

nfit, libnvdimm, region: export 'position' in mapping info

2017-08-05T00:20:16Z

It is useful to be able to know the position of a DIMM in an interleave-set. Consider the case where the order of the DIMMs changes causing a namespace to be invalidated because the interleave-set cookie no longer matches. If the before and after state of each DIMM position is known this state debugged by the system owner. Signed-off-by: Dan Williams

Merge branch 'for-4.13/dax' into libnvdimm-for-next

2017-07-03T23:54:58Z

libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.

2017-07-01T15:49:59Z

Add a bus level dsm_mask to nvdimm_bus_descriptor to allow the passthru calling mechanism to specify a different mask from the cmd_mask. Populate bus_dsm_mask and use it to filter dsm calls that user can make through the pass thru interface. Signed-off-by: Jerry Hoemann [djbw: use command number constants instead of a magic mask value] Signed-off-by: Dan Williams

libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region

2017-06-29T16:29:50Z

The pmem driver attaches to both persistent and volatile memory ranges advertised by the ACPI NFIT. When the region is volatile it is redundant to spend cycles flushing caches at fsync(). Check if the hosting region is volatile and do not set dax_write_cache() if it is. Cc: Jan Kara Cc: Jeff Moyer Cc: Christoph Hellwig Cc: Matthew Wilcox Cc: Ross Zwisler Signed-off-by: Dan Williams