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libnvdimm, nvdimm: dimm driver and base libnvdimm device-driver infrastructure

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* 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>
This commit is contained in:
Dan Williams
2015-05-31 14:41:48 -04:00
parent 62232e45f4
commit 4d88a97aa9
11 changed files with 527 additions and 15 deletions
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6
drivers/nvdimm/nd-core.h
View File

@@ -17,7 +17,6 @@
extern struct list_head nvdimm_bus_list;
extern struct mutex nvdimm_bus_list_mutex;
extern struct bus_type nvdimm_bus_type;
extern int nvdimm_major;
struct nvdimm_bus {
@@ -35,10 +34,11 @@ struct nvdimm {
int id;
};
bool is_nvdimm(struct device *dev);
struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
int __init nvdimm_bus_init(void);
void __exit nvdimm_bus_exit(void);
void nvdimm_bus_exit(void);
int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
void nd_synchronize(void);
bool is_nvdimm(struct device *dev);
#endif /* __ND_CORE_H__ */