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csx_CS_DDI_Info (9)
  • >> csx_CS_DDI_Info (9) ( Solaris man: Ядро )
  •  

    NAME

    csx_CS_DDI_Info - obtain DDI information
     
    

    SYNOPSIS

    #include <sys/pccard.h> 
    
    
    
    int32_t csx_CS_DDI_Info(cs_ddi_info_t *cdi);
    

     

    INTERFACE LEVEL

    Solaris DDI Specific (Solaris DDI)  

    PARAMETERS

    cdi

    Pointer to a cs_ddi_info_t structure.

     

    DESCRIPTION

    This function is a Solaris-specific extension that is used by clients that need to provide the xx_getinfo driver entry point (see getinfo(9E)). It provides a method for clients to obtain DDI information based on their socket number and client driver name.  

    STRUCTURE MEMBERS

    The structure members of cs_ddi_info_t are:

    uint32_t     Socket;        /* socket number */
    char*        driver_name;   /* unique driver name */
    dev_info_t   *dip;          /* dip */
    int32_t      instance;      /* instance */
    

    The fields are defined as follows:

    Socket

    This field must be set to the physical socket number that the client is interested in getting information about.

    driver_name

    This field must be set to a string containing the name of the client driver to get information about.

    If csx_CS_DDI_Info() is used in a client's xx_getinfo function, then the client will typically extract the Socket value from the *arg argument and it must set the driver_name field to the same string used with csx_RegisterClient(9F).

    If the driver_name is found on the Socket, the csx_CS_DDI_Info() function returns both the dev_info pointer and the instance fields for the requested driver instance.  

    RETURN VALUES

    CS_SUCCESS

    Successful operation.

    CS_BAD_SOCKET

    Client not found on Socket.

    CS_UNSUPPORTED_FUNCTION

    No PCMCIA hardware installed.

     

    CONTEXT

    This function may be called from user or kernel context.  

    EXAMPLES

    Example 1 : Using csx_CS_DDI_Info

    The following example shows how a client might call the csx_CS_DDI_Info() in the client's xx_getinfo function to return the dip or the instance number:

    static int
    pcepp_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg,
                                                            void **result)
    {
               int                          error = DDI_SUCCESS;
               pcepp_state_t                *pps;
               cs_ddi_info_t                cs_ddi_info;
    
      switch (cmd) {
    
               case DDI_INFO_DEVT2DEVINFO:
             cs_ddi_info.Socket = getminor((dev_t)arg) & 0x3f;
             cs_ddi_info.driver_name = pcepp_name;
             if (csx_CS_DDI_Info(&cs_ddi_info) != CS_SUCCESS)
                      return (DDI_FAILURE);
             if (!(pps = ddi_get_soft_state(pcepp_soft_state_p,
                           cs_ddi_info.instance))) {
                       *result = NULL;
             } else {
                       *result = pps->dip;
             }
             break;
    
               case DDI_INFO_DEVT2INSTANCE:
             cs_ddi_info.Socket = getminor((dev_t)arg) & 0x3f;
             cs_ddi_info.driver_name = pcepp_name;
             if (csx_CS_DDI_Info(&cs_ddi_info) != CS_SUCCESS)
                                return (DDI_FAILURE);
             *result = (void *)cs_ddi_info.instance;
             break;
    
               default:
             error = DDI_FAILURE;
             break;
    
      }
    
               return (error);
    }
    

     

    SEE ALSO

    getinfo(9E), csx_RegisterClient(9F), ddi_get_instance(9F)

    PC Card 95 Standard, PCMCIA/JEIDA


     

    Index

    NAME
    SYNOPSIS
    INTERFACE LEVEL
    PARAMETERS
    DESCRIPTION
    STRUCTURE MEMBERS
    RETURN VALUES
    CONTEXT
    EXAMPLES
    SEE ALSO


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