1 PROBE(9E)                     Driver Entry Points                    PROBE(9E)
   2 
   3 
   4 
   5 NAME
   6        probe - determine if a non-self-identifying device is present
   7 
   8 SYNOPSIS
   9        #include <sys/conf.h>
  10        #include <sys/ddi.h>
  11        #include <sys/sunddi.h>
  12 
  13 
  14 
  15        static intprefixprobe(dev_info_t *dip);
  16 
  17 
  18 INTERFACE LEVEL
  19        Solaris DDI specific (Solaris DDI). This entry point is required for
  20        non-self-identifying devices.  You must write it for such devices. For
  21        self-identifying devices,  nulldev(9F) should be specified in the
  22        dev_ops(9S) structure if a probe routine is not necessary.
  23 
  24 ARGUMENTS
  25        dip
  26                Pointer to the device's  dev_info structure.
  27 
  28 
  29 DESCRIPTION
  30        probe() determines whether the device corresponding to dip actually
  31        exists and is a valid device for this driver. probe() is called after
  32        identify(9E) and before attach(9E) for a given dip. For example, the
  33        probe() routine can map the device registers using ddi_map_regs(9F)
  34        then attempt to access the hardware using ddi_peek(9F) or ddi_poke(9F)
  35        and determine if the device exists.  Then the device registers should

  67 
  68        DDI_PROBE_DONTCARE
  69                               If the probe was unsuccessful, yet attach(9E)
  70                               should still be called.
  71 
  72 
  73        DDI_PROBE_PARTIAL
  74                               If the instance is not present now, but may be
  75                               present in the future.
  76 
  77 
  78 SEE ALSO
  79        attach(9E), identify(9E), ddi_dev_is_sid(9F), ddi_map_regs(9F),
  80        ddi_peek(9F), ddi_poke(9F), nulldev(9F), dev_ops(9S)
  81 
  82 
  83        Writing Device Drivers
  84 
  85 
  86 
  87                                November 18, 1992                     PROBE(9E)

   1 PROBE(9E)                     Driver Entry Points                    PROBE(9E)
   2 
   3 
   4 
   5 NAME
   6        probe - determine if a non-self-identifying device is present
   7 
   8 SYNOPSIS
   9        #include <sys/conf.h>
  10        #include <sys/ddi.h>
  11        #include <sys/sunddi.h>
  12 
  13 
  14 
  15        static int prefixprobe(dev_info_t *dip);
  16 
  17 
  18 INTERFACE LEVEL
  19        Solaris DDI specific (Solaris DDI). This entry point is required for
  20        non-self-identifying devices.  You must write it for such devices. For
  21        self-identifying devices, nulldev(9F) should be specified in the
  22        dev_ops(9S) structure if a probe routine is not necessary.
  23 
  24 ARGUMENTS
  25        dip
  26                Pointer to the device's dev_info structure.
  27 
  28 
  29 DESCRIPTION
  30        probe() determines whether the device corresponding to dip actually
  31        exists and is a valid device for this driver. probe() is called after
  32        identify(9E) and before attach(9E) for a given dip. For example, the
  33        probe() routine can map the device registers using ddi_map_regs(9F)
  34        then attempt to access the hardware using ddi_peek(9F) or ddi_poke(9F)
  35        and determine if the device exists.  Then the device registers should

  67 
  68        DDI_PROBE_DONTCARE
  69                               If the probe was unsuccessful, yet attach(9E)
  70                               should still be called.
  71 
  72 
  73        DDI_PROBE_PARTIAL
  74                               If the instance is not present now, but may be
  75                               present in the future.
  76 
  77 
  78 SEE ALSO
  79        attach(9E), identify(9E), ddi_dev_is_sid(9F), ddi_map_regs(9F),
  80        ddi_peek(9F), ddi_poke(9F), nulldev(9F), dev_ops(9S)
  81 
  82 
  83        Writing Device Drivers
  84 
  85 
  86 
  87                                February 15, 2020                     PROBE(9E)