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| author | Toshi Kani <toshi.kani@hpe.com> | 2017-06-08 12:36:57 -0600 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-06-15 14:39:42 -0700 |
| commit | 56b47fe6579234e3102f1f28e26fa91fb6c38b3d (patch) | |
| tree | 12f711e49e89ce38450caf20354ab3717857d907 | |
| parent | 975750a98c26769fe54785579f4b26c961a7a6f4 (diff) | |
| download | linux-56b47fe6579234e3102f1f28e26fa91fb6c38b3d.tar.gz linux-56b47fe6579234e3102f1f28e26fa91fb6c38b3d.tar.bz2 linux-56b47fe6579234e3102f1f28e26fa91fb6c38b3d.zip | |
acpi/nfit: Add support of NVDIMM memory error notification in ACPI 6.2
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>
| -rw-r--r-- | drivers/acpi/nfit/core.c | 28 | ||||
| -rw-r--r-- | drivers/acpi/nfit/nfit.h | 1 |
2 files changed, 23 insertions, 6 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index b930d12f636b..facbc6107165 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -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) diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h index 29bdd959517f..e3da60b2d686 100644 --- a/drivers/acpi/nfit/nfit.h +++ b/drivers/acpi/nfit/nfit.h @@ -79,6 +79,7 @@ enum { enum nfit_root_notifiers { NFIT_NOTIFY_UPDATE = 0x80, + NFIT_NOTIFY_UC_MEMORY_ERROR = 0x81, }; enum nfit_dimm_notifiers { |