di_driver_ops(3devinfo)

1di_binding_name(3DEVINDFeOv)ice Information Library Functidoin_sbinding_name(3DEVINFO)
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NAME

6       di_binding_name,     di_bus_addr,     di_compatible_names,    di_devid,
7       di_driver_name, di_driver_ops, di_driver_major, di_instance, di_nodeid,
8       di_node_name - return libdevinfo node information
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SYNOPSIS

11       cc [ flag... ] file... -ldevinfo [ library... ]
12       #include <libdevinfo.h>
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14       char *di_binding_name(di_node_t node);
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17       char *di_bus_addr(di_node_t node);
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20       int di_compatible_names(di_node_t node, char **names);
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23       ddi_devid_t di_devid(di_node_t node);
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26       char *di_driver_name(di_node_t node);
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29       uint_t di_driver_ops(di_node_t node);
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32       int di_driver_major(di_node_t node);
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35       int di_instance(di_node_t node);
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38       int di_nodeid(di_node_t node);
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41       char *di_node_name(di_node_t node);
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PARAMETERS

45       names    The address of a pointer.
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48       node     A  handle to a device  node.
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DESCRIPTION

52       These functions extract information associated with a device node.
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RETURN VALUES

55       The  di_binding_name()  function returns a pointer to the binding name.
56       The binding name is the name used by the system to select a driver  for
57       the device.
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60       The  di_bus_addr()  function  returns  a  pointer  to a null-terminated
61       string containing the assigned bus address  for  the  device.  NULL  is
62       returned  if a bus address has not been assigned to the device. A zero-
63       length string may be returned and is considered a valid bus address.
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66       The return value of di_compatible_names() is the number  of  compatible
67       names. names is updated to point to a buffer contained within the snap‐
68       shot. The buffer contains a concatenation of  null-terminated  strings,
69       for example:
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71         <name1>/0<name2>/0...<namen>/0
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75       See  the  discussion  of  generic names in Writing Device Drivers for a
76       description of how compatible names are  used  by  Solaris  to  achieve
77       driver binding for the node.
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80       The di_devid() function returns the device ID for node, if it is regis‐
81       tered. Otherwise, a null pointer is returned. Interfaces in the  libde‐
82       vid(3LIB)  library  may  be used to manipulate the handle to the device
83       id. This function is obsolete  and  might  be  removed  from  a  future
84       Solaris release. Applications should use the "devid" property instead.
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87       The  di_driver_name()  function returns the name of the driver bound to
88       the node. A null pointer is returned if   node  is  not  bound  to  any
89       driver.
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92       The  di_driver_ops()  function  returns  a  bit array of  device driver
93       entry points that are supported by the driver bound to this node.  Pos‐
94       sible  bit  fields  supported  by the driver are DI_CB_OPS, DI_BUS_OPS,
95       DI_STREAM_OPS.
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98       The di_driver_major() function returns the major number associated with
99       the driver bound to node. If there is no driver bound to the node, this
100       function returns −1.
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103       The di_instance() function returns the instance number of the device. A
104       value  of  -1 indicates an instance number has not been assigned to the
105       device by the system.
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108       The di_nodeid() function returns  the type of device, which may be  one
109       of  the  following  possible  values: DI_PSEUDO_NODEID, DI_PROM_NODEID,
110       and DI_SID_NODEID. Devices of type DI_PROM_NODEID may  have  additional
111       properties  that  are  defined by the PROM. See di_prom_prop_data(3DEV‐
112       INFO) and di_prom_prop_lookup_bytes(3DEVINFO).
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115       The di_node_name() function returns  a  pointer  to  a  null-terminated
116       string containing the node name.
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EXAMPLES

119       See di_init(3DEVINFO) for an example demonstrating typical use of these
120       functions.
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ATTRIBUTES

123       See attributes(5)  for descriptions of the following attributes:
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128       ┌─────────────────────────────┬──────────────────────────────────┐
129       │      ATTRIBUTE TYPE         │         ATTRIBUTE VALUE          │
130       ├─────────────────────────────┼──────────────────────────────────┤
131       │Interface Stability          │Evolving (di_devid() is obsolete) │
132       ├─────────────────────────────┼──────────────────────────────────┤
133       │MT-Level                     │Safe                              │
134       └─────────────────────────────┴──────────────────────────────────┘
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