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| author | Dan Williams <dan.j.williams@intel.com> | 2015-06-08 20:27:06 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-25 03:24:10 +0200 |
| commit | 62232e45f4a265abb43f0acf16e58f5d0b6e1ec9 (patch) | |
| tree | 12092e5b33c1d8e7008c4ffa483607a26fd517b3 /drivers/acpi/nfit.h | |
| parent | libnvdimm, nfit: dimm/memory-devices (diff) | |
| download | linux-62232e45f4a265abb43f0acf16e58f5d0b6e1ec9.tar.xz linux-62232e45f4a265abb43f0acf16e58f5d0b6e1ec9.zip | |
libnvdimm: control (ioctl) messages for nvdimm_bus and nvdimm devices
Most discovery/configuration of the nvdimm-subsystem is done via sysfs
attributes. However, some nvdimm_bus instances, particularly the
ACPI.NFIT bus, define a small set of messages that can be passed to the
platform. For convenience we derive the initial libnvdimm-ioctl command
formats directly from the NFIT DSM Interface Example formats.
ND_CMD_SMART: media health and diagnostics
ND_CMD_GET_CONFIG_SIZE: size of the label space
ND_CMD_GET_CONFIG_DATA: read label space
ND_CMD_SET_CONFIG_DATA: write label space
ND_CMD_VENDOR: vendor-specific command passthrough
ND_CMD_ARS_CAP: report address-range-scrubbing capabilities
ND_CMD_ARS_START: initiate scrubbing
ND_CMD_ARS_STATUS: report on scrubbing state
ND_CMD_SMART_THRESHOLD: configure alarm thresholds for smart events
If a platform later defines different commands than this set it is
straightforward to extend support to those formats.
Most of the commands target a specific dimm. However, the
address-range-scrubbing commands target the bus. The 'commands'
attribute in sysfs of an nvdimm_bus, or nvdimm, enumerate the supported
commands for that object.
Cc: <linux-acpi@vger.kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reported-by: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi/nfit.h')
| -rw-r--r-- | drivers/acpi/nfit.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/nfit.h b/drivers/acpi/nfit.h index 9dd437fe5563..b76e33629098 100644 --- a/drivers/acpi/nfit.h +++ b/drivers/acpi/nfit.h @@ -67,6 +67,8 @@ struct nfit_mem { struct acpi_nfit_system_address *spa_dcr; struct acpi_nfit_system_address *spa_bdw; struct list_head list; + struct acpi_device *adev; + unsigned long dsm_mask; }; struct acpi_nfit_desc { @@ -79,6 +81,7 @@ struct acpi_nfit_desc { struct list_head bdws; struct nvdimm_bus *nvdimm_bus; struct device *dev; + unsigned long dimm_dsm_force_en; }; static inline struct acpi_nfit_memory_map *__to_nfit_memdev( |