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authorDan Williams <dan.j.williams@intel.com>2015-05-31 21:41:48 +0300
committerDan Williams <dan.j.williams@intel.com>2015-06-25 04:24:10 +0300
commit4d88a97aa9e8cfa6460aab119c5da60ad2267423 (patch)
treef96989f3240720c647a48dd493d895b58b052b10 /include/uapi/linux/ndctl.h
parent62232e45f4a265abb43f0acf16e58f5d0b6e1ec9 (diff)
downloadlinux-4d88a97aa9e8cfa6460aab119c5da60ad2267423.tar.xz
libnvdimm, nvdimm: dimm driver and base libnvdimm device-driver infrastructure
* Implement the device-model infrastructure for loading modules and attaching drivers to nvdimm devices. This is a simple association of a nd-device-type number with a driver that has a bitmask of supported device types. To facilitate userspace bind/unbind operations 'modalias' and 'devtype', that also appear in the uevent, are added as generic sysfs attributes for all nvdimm devices. The reason for the device-type number is to support sub-types within a given parent devtype, be it a vendor-specific sub-type or otherwise. * The first consumer of this infrastructure is the driver for dimm devices. It simply uses control messages to retrieve and store the configuration-data image (label set) from each dimm. Note: nd_device_register() arranges for asynchronous registration of nvdimm bus devices by default. Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Neil Brown <neilb@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Tested-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/uapi/linux/ndctl.h')
-rw-r--r--include/uapi/linux/ndctl.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h
index ff13c23b26df..37640916d146 100644
--- a/include/uapi/linux/ndctl.h
+++ b/include/uapi/linux/ndctl.h
@@ -175,4 +175,10 @@ static inline const char *nvdimm_cmd_name(unsigned cmd)
#define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\
struct nd_cmd_ars_status)
+
+#define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */
+
+enum nd_driver_flags {
+ ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM,
+};
#endif /* __NDCTL_H__ */