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author | Dan Williams <dan.j.williams@intel.com> | 2015-06-08 14:27:06 -0400 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-24 21:24:10 -0400 |
commit | 62232e45f4a265abb43f0acf16e58f5d0b6e1ec9 (patch) | |
tree | 12092e5b33c1d8e7008c4ffa483607a26fd517b3 /drivers/acpi/Kconfig | |
parent | e6dfb2de47768efe8cc37c9a1863d2aff81440fb (diff) | |
download | linux-62232e45f4a265abb43f0acf16e58f5d0b6e1ec9.tar.gz |
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/Kconfig')
-rw-r--r-- | drivers/acpi/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 300b4ef3712b..9c43ae301300 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -397,6 +397,18 @@ config ACPI_NFIT To compile this driver as a module, choose M here: the module will be called nfit. +config ACPI_NFIT_DEBUG + bool "NFIT DSM debug" + depends on ACPI_NFIT + depends on DYNAMIC_DEBUG + default n + help + Enabling this option causes the nfit driver to dump the + input and output buffers of _DSM operations on the ACPI0012 + device and its children. This can be very verbose, so leave + it disabled unless you are debugging a hardware / firmware + issue. + source "drivers/acpi/apei/Kconfig" config ACPI_EXTLOG |