Manual Pages for UNIX Operating System command usage for man ddi_fm_capable

Kernel Functions for Drivers                      ddi_fm_init(9F)



NAME
     ddi_fm_init, ddi_fm_fini, ddi_fm_capable  -  initialize  and
     get the FM capabilities for a device instance

SYNOPSIS
     #include 

     void ddi_fm_init(dev_info_t *dip, int *fm_capability,
          ddi_iblock_cookie_t *ibcp);


     void ddi_fm_fini(dev_info_t *dip);


     int ddi_fm_capable(dev_info_t *dip, int *fm_capability);


INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI)

PARAMETERS
     ddi_fm_init()

     dip              Pointer to the dev_info structure


     fm_capability    Fault Management capability bit mask


     ibcp             Pointer to where the interrupt block cookie
                      should be returned.


DESCRIPTION
     A device driver can declare its fault  management  capabili-
     ties  to  the  I/O  Fault  Management  framework  by calling
     ddi_fm_init(). The ddi_fm_init() function allocates and ini-
     tializes  resources according to the bitwise-inclusive-OR of
     the fault management capabilities, described in the  follow-
     ing and supported by the driver's immediate nexus parent.

     DDI_FM_NOT_CAPABLE        The driver does  not  support  any
                               FMA  features. This is the default
                               value assigned to device drivers.


     DDI_FM_EREPORT_CAPABLE    The driver generates FMA  protocol
                               error  events  (ereports) upon the
                               detection of an error condition.






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Kernel Functions for Drivers                      ddi_fm_init(9F)



     DDI_FM_ACCCHK_CAPABLE     The driver checks for errors  upon
                               the  completion  of  one  or  more
                               access I/O transactions.


     DDI_FM_DMACHK_CAPABLE     The driver checks for errors  upon
                               the  completion of one or more DMA
                               I/O transactions.


     DDI_FM_ERRCB_CAPABLE      The driver  is  capable  of  error
                               handler callback registration.



     If the parent nexus is not capable of supporting any one  of
     the  requested  capabilities, the associated bit will not be
     set and returned as such to  the  driver.  Before  returning
     from  ddi_fm_init(),  the  I/O  Fault  Management  framework
     creates a set of  fault  management  capability  properties:
     fm-ereport-capable, fm-errcb-capable, fm-accchk-capable, and
     fm-dmachk-capable. The current  supported  fault  management
     capability levels are observable via prtconf(1M).


     A driver can support the administrative selection  of  fault
     management  capabilities  by  exporting  and setting a fault
     management capability level property in  its  driver.conf(4)
     file  to  the values described above. The fm_capable proper-
     ties must be set and read  prior  to  calling  ddi_fm_init()
     with the desired capability list.

     ddi_fm_fini()    This function cleans up resources allocated
                      to  support  fault  management  for the dip
                      structure.


     ddi_fm_capable()    This function returns the capability bit
                         mask  currently  set  for the dip struc-
                         ture.


CONTEXT
     These functions can be  called  from  kernel  context  in  a
     driver attach(9E) or detach(9E) operation.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:






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Kernel Functions for Drivers                      ddi_fm_init(9F)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|


SEE ALSO
     prtconf(1M),  driver.conf(4),   attributes(5),   attach(9E),
     detach(9E)


     Writing Device Drivers










































SunOS 5.11          Last change: 14 May 2007                    3