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acpi/nfit: Add support of NVDIMM memory error notification in ACPI 6.2

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ACPI 6.2 defines a new ACPI notification value to NVDIMM Root Device
in Table 5-169.

 0x81 Unconsumed Uncorrectable Memory Error Detected
      Used to pro-actively notify OSPM of uncorrectable memory errors
      detected (for example a memory scrubbing engine that continuously
      scans the NVDIMMs memory). This is an optional notification. Only
      locations that were mapped in to SPA by the platform will generate
      a notification.

Add support of this notification value by initiating an ARS scan. This
will find new error locations and add their badblocks information.

Link: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Toshi Kani
2017-06-08 12:36:57 -06:00
committed by Dan Williams
parent 975750a98c
commit 56b47fe657
2 changed files with 23 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/acpi/nfit/core.c
View File

@@ -3016,7 +3016,7 @@ static int acpi_nfit_remove(struct acpi_device *adev)
return 0;
}
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)
static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle)
{
struct acpi_nfit_desc *acpi_desc = dev_get_drvdata(dev);
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -3024,11 +3024,6 @@ void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)
acpi_status status;
int ret;
dev_dbg(dev, "%s: event: %d\n", __func__, event);
if (event != NFIT_NOTIFY_UPDATE)
return;
if (!dev->driver) {
/* dev->driver may be null if we're being removed */
dev_dbg(dev, "%s: no driver found for dev\n", __func__);
@@ -3065,6 +3060,27 @@ void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)
dev_err(dev, "Invalid _FIT\n");
kfree(buf.pointer);
}
static void acpi_nfit_uc_error_notify(struct device *dev, acpi_handle handle)
{
struct acpi_nfit_desc *acpi_desc = dev_get_drvdata(dev);
acpi_nfit_ars_rescan(acpi_desc);
}
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)
{
dev_dbg(dev, "%s: event: 0x%x\n", __func__, event);
switch (event) {
case NFIT_NOTIFY_UPDATE:
return acpi_nfit_update_notify(dev, handle);
case NFIT_NOTIFY_UC_MEMORY_ERROR:
return acpi_nfit_uc_error_notify(dev, handle);
default:
return;
}
}
EXPORT_SYMBOL_GPL(__acpi_nfit_notify);
static void acpi_nfit_notify(struct acpi_device *adev, u32 event)

1
drivers/acpi/nfit/nfit.h
View File

@@ -79,6 +79,7 @@ enum {
enum nfit_root_notifiers {
NFIT_NOTIFY_UPDATE = 0x80,
NFIT_NOTIFY_UC_MEMORY_ERROR = 0x81,
};
enum nfit_dimm_notifiers {