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acpi: nfit: add persistent memory control flag for nd_region

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Propagate the ADR attribute flag from the NFIT platform capabilities
sub-table to nd_region.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
This commit is contained in:
Dave Jiang
2018-01-31 12:45:43 -07:00
committed by Ross Zwisler
parent 06e8ccdab1
commit 30e6d7bf29
2 changed files with 9 additions and 0 deletions
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3
drivers/acpi/nfit/core.c
View File

@ -2675,6 +2675,9 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc,
if(acpi_desc->platform_cap & ACPI_NFIT_CAPABILITY_CACHE_FLUSH) if(acpi_desc->platform_cap & ACPI_NFIT_CAPABILITY_CACHE_FLUSH)
set_bit(ND_REGION_PERSIST_CACHE, &ndr_desc->flags); set_bit(ND_REGION_PERSIST_CACHE, &ndr_desc->flags);
if (acpi_desc->platform_cap & ACPI_NFIT_CAPABILITY_MEM_FLUSH)
set_bit(ND_REGION_PERSIST_MEMCTRL, &ndr_desc->flags);
list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) { list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) {
struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev; struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev;
struct nd_mapping_desc *mapping; struct nd_mapping_desc *mapping;

6
include/linux/libnvdimm.h
View File

@ -52,6 +52,12 @@ enum {
* system power loss. * system power loss.
*/ */
ND_REGION_PERSIST_CACHE = 1, ND_REGION_PERSIST_CACHE = 1,
/*
* Platform provides mechanisms to automatically flush outstanding
* write data from memory controler to pmem on system power loss.
* (ADR)
*/
ND_REGION_PERSIST_MEMCTRL = 2,
/* mark newly adjusted resources as requiring a label update */ /* mark newly adjusted resources as requiring a label update */
DPA_RESOURCE_ADJUSTED = 1 << 0, DPA_RESOURCE_ADJUSTED = 1 << 0,