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path: root/drivers/acpi/nfit/core.c
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Diffstat (limited to 'drivers/acpi/nfit/core.c')
-rw-r--r--drivers/acpi/nfit/core.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index b28ce440a06f..bbe48ad20886 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -838,6 +838,18 @@ static bool add_flush(struct acpi_nfit_desc *acpi_desc,
return true;
}
+static bool add_platform_cap(struct acpi_nfit_desc *acpi_desc,
+ struct acpi_nfit_capabilities *pcap)
+{
+ struct device *dev = acpi_desc->dev;
+ u32 mask;
+
+ mask = (1 << (pcap->highest_capability + 1)) - 1;
+ acpi_desc->platform_cap = pcap->capabilities & mask;
+ dev_dbg(dev, "%s: cap: %#x\n", __func__, acpi_desc->platform_cap);
+ return true;
+}
+
static void *add_table(struct acpi_nfit_desc *acpi_desc,
struct nfit_table_prev *prev, void *table, const void *end)
{
@@ -883,6 +895,10 @@ static void *add_table(struct acpi_nfit_desc *acpi_desc,
case ACPI_NFIT_TYPE_SMBIOS:
dev_dbg(dev, "%s: smbios\n", __func__);
break;
+ case ACPI_NFIT_TYPE_CAPABILITIES:
+ if (!add_platform_cap(acpi_desc, table))
+ return err;
+ break;
default:
dev_err(dev, "unknown table '%d' parsing nfit\n", hdr->type);
break;
@@ -2659,6 +2675,12 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc,
else
ndr_desc->numa_node = NUMA_NO_NODE;
+ if(acpi_desc->platform_cap & ACPI_NFIT_CAPABILITY_CACHE_FLUSH)
+ 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) {
struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev;
struct nd_mapping_desc *mapping;
@@ -3467,6 +3489,7 @@ static __init int nfit_init(void)
BUILD_BUG_ON(sizeof(struct acpi_nfit_smbios) != 9);
BUILD_BUG_ON(sizeof(struct acpi_nfit_control_region) != 80);
BUILD_BUG_ON(sizeof(struct acpi_nfit_data_region) != 40);
+ BUILD_BUG_ON(sizeof(struct acpi_nfit_capabilities) != 16);
guid_parse(UUID_VOLATILE_MEMORY, &nfit_uuid[NFIT_SPA_VOLATILE]);
guid_parse(UUID_PERSISTENT_MEMORY, &nfit_uuid[NFIT_SPA_PM]);