FreeBSD/Linux Kernel Cross Reference
sys/sys/bus_private.h

     /*-
      * Copyright (c) 1997, 1998 Doug Rabson
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: src/sys/sys/bus_private.h,v 1.11.2.2 2000/08/03 00:25:22 peter Exp $
     * $DragonFly: src/sys/sys/bus_private.h,v 1.10 2008/09/30 12:20:29 hasso Exp $
     */
    
    #ifndef _SYS_BUS_PRIVATE_H_
    #define _SYS_BUS_PRIVATE_H_
    
    #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
    
    #error "This file should not be included by userland programs."
    
    #else
    
    #ifndef _SYS_BUS_H_
    #include <sys/bus.h>
    #endif
    
    /*
     * Used to attach drivers to devclasses.
     */
    typedef struct driverlink *driverlink_t;
    struct driverlink {
            kobj_class_t            driver;
            TAILQ_ENTRY(driverlink) link;   /* list of drivers in devclass */
    };
    
    /*
     * Forward declarations
     */
    typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
    typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
    typedef TAILQ_HEAD(device_list, device) device_list_t;
    
    struct devclass {
            TAILQ_ENTRY(devclass) link;
            devclass_t      parent;         /* parent in devclass hierarchy */
            driver_list_t   drivers;        /* bus devclasses store drivers for bus */
            char            *name;
            device_t        *devices;       /* array of devices indexed by unit */
            int             maxunit;        /* size of devices array */
    };
    
    /*
     * Resources from config(8).
     */
    typedef enum {
            RES_INT, RES_STRING, RES_LONG
    } resource_type;
    
    struct config_resource {
            char            *name;
            resource_type   type;
            union {
                    long    longval;
                    int     intval;
                    char*   stringval;
            } u;
    };
    
    struct config_device {
            char                    *name;          /* e.g. "lpt", "wdc" etc */
            int                     unit;
            int                     resource_count;
            struct config_resource  *resources;
    };
    
    /*
     * Implementation of device.
     */
    struct device {
            /*
             * A device is a kernel object. The first field must be the
             * current ops table for the object.
             */
           KOBJ_FIELDS;
   
           /*
            * Device hierarchy.
            */
           TAILQ_ENTRY(device)     link;           /* list of devices in parent */
           TAILQ_ENTRY(device)     devlink;        /* global device list membership */
           device_t                parent;
           device_list_t           children;       /* list of subordinate devices */
   
           /*
            * Details of this device.
            */
           driver_t        *driver;
           devclass_t      devclass;       /* device class which we are in */
           int             unit;
           char*           nameunit;       /* name+unit e.g. foodev0 */
           char*           desc;           /* driver specific description */
           int             busy;           /* count of calls to device_busy() */
           device_state_t  state;
           uint32_t        devflags;       /* api level flags for device_get_flags() */
           u_short         flags;
   #define DF_ENABLED      0x0001          /* device should be probed/attached */
   #define DF_FIXEDCLASS   0x0002          /* devclass specified at create time */
   #define DF_WILDCARD     0x0004          /* unit was originally wildcard */
   #define DF_DESCMALLOCED 0x0008          /* description was malloced */
   #define DF_QUIET        0x0010          /* don't print verbose attach message */
   #define DF_DONENOMATCH  0x0020          /* don't execute DEVICE_NOMATCH again */
   #define DF_EXTERNALSOFTC 0x0040         /* softc not allocated by us */
   #define DF_ASYNCPROBE   0x0080          /* can be probed with its own thread */
           u_char          order;          /* order from device_add_child_ordered() */
           u_char          pad;
           void            *ivars;
           void            *softc;
   };
   
   struct device_op_desc {
           unsigned int    offset;         /* offset in driver ops */
           struct method*  method;         /* internal method implementation */
           devop_t         deflt;          /* default implementation */
           const char*     name;           /* unique name (for registration) */
   };
   
   #endif  /* _KERNEL || _KERNEL_STRUCTURES */
   #endif  /* !_SYS_BUS_PRIVATE_H_ */

Cache object: 71869cd4352c4e4af4d26c2f107d903e