diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2015-05-19 22:54:31 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-24 21:24:10 -0400 |
| commit | b94d5230d06eb930be82e67fb1a9a58271e78297 (patch) | |
| tree | 62ed0e06a81e434dbcbb50a36002bad4eb00b1a1 /drivers/nvdimm/Kconfig | |
| parent | ad5fb870c486d932a1749d7853dd70f436a7e03f (diff) | |
| download | lwn-b94d5230d06eb930be82e67fb1a9a58271e78297.tar.gz lwn-b94d5230d06eb930be82e67fb1a9a58271e78297.zip | |
libnvdimm, nfit: initial libnvdimm infrastructure and NFIT support
A struct nvdimm_bus is the anchor device for registering nvdimm
resources and interfaces, for example, a character control device,
nvdimm devices, and I/O region devices. The ACPI NFIT (NVDIMM Firmware
Interface Table) is one possible platform description for such
non-volatile memory resources in a system. The nfit.ko driver attaches
to the "ACPI0012" device that indicates the presence of the NFIT and
parses the table to register a struct nvdimm_bus instance.
Cc: <linux-acpi@vger.kernel.org>
Cc: Lv Zheng <lv.zheng@intel.com>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/Kconfig')
| -rw-r--r-- | drivers/nvdimm/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig new file mode 100644 index 000000000000..92933551f846 --- /dev/null +++ b/drivers/nvdimm/Kconfig @@ -0,0 +1,15 @@ +config LIBNVDIMM + tristate "NVDIMM (Non-Volatile Memory Device) Support" + depends on PHYS_ADDR_T_64BIT + depends on BLK_DEV + help + Generic support for non-volatile memory devices including + ACPI-6-NFIT defined resources. On platforms that define an + NFIT, or otherwise can discover NVDIMM resources, a libnvdimm + bus is registered to advertise PMEM (persistent memory) + namespaces (/dev/pmemX) and BLK (sliding mmio window(s)) + namespaces (/dev/ndX). A PMEM namespace refers to a memory + resource that may span multiple DIMMs and support DAX (see + CONFIG_DAX). A BLK namespace refers to an NVDIMM control + region which exposes an mmio register set for windowed + access mode to non-volatile memory. |