sys/sys/bus_private.h

   1 /*-
   2  * Copyright (c) 1997, 1998 Doug Rabson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/sys/bus_private.h,v 1.11.2.2 2000/08/03 00:25:22 peter Exp $
  27  * $DragonFly: src/sys/sys/bus_private.h,v 1.10 2008/09/30 12:20:29 hasso Exp $
  28  */
  29
  30 #ifndef _SYS_BUS_PRIVATE_H_
  31 #define _SYS_BUS_PRIVATE_H_
  32
  33 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
  34
  35 #error "This file should not be included by userland programs."
  36
  37 #else
  38
  39 #ifndef _SYS_BUS_H_
  40 #include <sys/bus.h>
  41 #endif
  42
  43 /*
  44  * Used to attach drivers to devclasses.
  45  */
  46 typedef struct driverlink *driverlink_t;
  47 struct driverlink {
  48         kobj_class_t            driver;
  49         TAILQ_ENTRY(driverlink) link;   /* list of drivers in devclass */
  50 };
  51
  52 /*
  53  * Forward declarations
  54  */
  55 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
  56 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
  57 typedef TAILQ_HEAD(device_list, device) device_list_t;
  58
  59 struct devclass {
  60         TAILQ_ENTRY(devclass) link;
  61         devclass_t      parent;         /* parent in devclass hierarchy */
  62         driver_list_t   drivers;        /* bus devclasses store drivers for bus */
  63         char            *name;
  64         device_t        *devices;       /* array of devices indexed by unit */
  65         int             maxunit;        /* size of devices array */
  66 };
  67
  68 /*
  69  * Resources from config(8).
  70  */
  71 typedef enum {
  72         RES_INT, RES_STRING, RES_LONG
  73 } resource_type;
  74
  75 struct config_resource {
  76         char            *name;
  77         resource_type   type;
  78         union {
  79                 long    longval;
  80                 int     intval;
  81                 char*   stringval;
  82         } u;
  83 };
  84
  85 struct config_device {
  86         char                    *name;          /* e.g. "lpt", "wdc" etc */
  87         int                     unit;
  88         int                     resource_count;
  89         struct config_resource  *resources;
  90 };
  91
  92 /*
  93  * Implementation of device.
  94  */
  95 struct device {
  96         /*
  97          * A device is a kernel object. The first field must be the
  98          * current ops table for the object.
  99          */
 100         KOBJ_FIELDS;
 101
 102         /*
 103          * Device hierarchy.
 104          */
 105         TAILQ_ENTRY(device)     link;           /* list of devices in parent */
 106         TAILQ_ENTRY(device)     devlink;        /* global device list membership */
 107         device_t                parent;
 108         device_list_t           children;       /* list of subordinate devices */
 109
 110         /*
 111          * Details of this device.
 112          */
 113         driver_t        *driver;
 114         devclass_t      devclass;       /* device class which we are in */
 115         int             unit;
 116         char*           nameunit;       /* name+unit e.g. foodev0 */
 117         char*           desc;           /* driver specific description */
 118         int             busy;           /* count of calls to device_busy() */
 119         device_state_t  state;
 120         uint32_t        devflags;       /* api level flags for device_get_flags() */
 121         u_short         flags;
 122 #define DF_ENABLED      0x0001          /* device should be probed/attached */
 123 #define DF_FIXEDCLASS   0x0002          /* devclass specified at create time */
 124 #define DF_WILDCARD     0x0004          /* unit was originally wildcard */
 125 #define DF_DESCMALLOCED 0x0008          /* description was malloced */
 126 #define DF_QUIET        0x0010          /* don't print verbose attach message */
 127 #define DF_DONENOMATCH  0x0020          /* don't execute DEVICE_NOMATCH again */
 128 #define DF_EXTERNALSOFTC 0x0040         /* softc not allocated by us */
 129 #define DF_ASYNCPROBE   0x0080          /* can be probed with its own thread */
 130         u_char          order;          /* order from device_add_child_ordered() */
 131         u_char          pad;
 132         void            *ivars;
 133         void            *softc;
 134 };
 135
 136 struct device_op_desc {
 137         unsigned int    offset;         /* offset in driver ops */
 138         struct method*  method;         /* internal method implementation */
 139         devop_t         deflt;          /* default implementation */
 140         const char*     name;           /* unique name (for registration) */
 141 };
 142
 143 #endif  /* _KERNEL || _KERNEL_STRUCTURES */
 144 #endif  /* !_SYS_BUS_PRIVATE_H_ */