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 #include <sys/sysctl.h>
  34
  35 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
  36
  37 #error "This file should not be included by userland programs."
  38
  39 #else
  40
  41 #ifndef _SYS_BUS_H_
  42 #include <sys/bus.h>
  43 #endif
  44
  45 /*
  46  * Used to attach drivers to devclasses.
  47  */
  48 typedef struct driverlink *driverlink_t;
  49 struct driverlink {
  50         kobj_class_t            driver;
  51         TAILQ_ENTRY(driverlink) link;   /* list of drivers in devclass */
  52 };
  53
  54 /*
  55  * Forward declarations
  56  */
  57 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
  58 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
  59 typedef TAILQ_HEAD(device_list, bsd_device) device_list_t;
  60
  61 struct devclass {
  62         TAILQ_ENTRY(devclass) link;
  63         devclass_t      parent;         /* parent in devclass hierarchy */
  64         driver_list_t   drivers;        /* bus devclasses store drivers for bus */
  65         char            *name;
  66         device_t        *devices;       /* array of devices indexed by unit */
  67         int             maxunit;        /* size of devices array */
  68
  69         struct sysctl_ctx_list sysctl_ctx;
  70         struct sysctl_oid *sysctl_tree;
  71 };
  72
  73 /*
  74  * Resources from config(8).
  75  */
  76 typedef enum {
  77         RES_INT, RES_STRING, RES_LONG
  78 } resource_type;
  79
  80 struct config_resource {
  81         char            *name;
  82         resource_type   type;
  83         union {
  84                 long    longval;
  85                 int     intval;
  86                 char*   stringval;
  87         } u;
  88 };
  89
  90 struct config_device {
  91         char                    *name;          /* e.g. "lpt", "wdc" etc */
  92         int                     unit;
  93         int                     resource_count;
  94         struct config_resource  *resources;
  95 };
  96
  97 /*
  98  * Implementation of device.
  99  */
 100 struct bsd_device {
 101         /*
 102          * A device is a kernel object. The first field must be the
 103          * current ops table for the object.
 104          */
 105         KOBJ_FIELDS;
 106
 107         /*
 108          * Device hierarchy.
 109          */
 110         TAILQ_ENTRY(bsd_device) link;           /* list of devices in parent */
 111         TAILQ_ENTRY(bsd_device) devlink;        /* global device list membership */
 112         device_t                parent;
 113         device_list_t           children;       /* list of subordinate devices */
 114
 115         /*
 116          * Details of this device.
 117          */
 118         driver_t        *driver;
 119         devclass_t      devclass;       /* device class which we are in */
 120         int             unit;
 121         char*           nameunit;       /* name+unit e.g. foodev0 */
 122         char*           desc;           /* driver specific description */
 123         int             busy;           /* count of calls to device_busy() */
 124         device_state_t  state;
 125         uint32_t        devflags;       /* api level flags for device_get_flags() */
 126         u_short         flags;
 127 #define DF_ENABLED      0x0001          /* device should be probed/attached */
 128 #define DF_FIXEDCLASS   0x0002          /* devclass specified at create time */
 129 #define DF_WILDCARD     0x0004          /* unit was originally wildcard */
 130 #define DF_DESCMALLOCED 0x0008          /* description was malloced */
 131 #define DF_QUIET        0x0010          /* don't print verbose attach message */
 132 #define DF_DONENOMATCH  0x0020          /* don't execute DEVICE_NOMATCH again */
 133 #define DF_EXTERNALSOFTC 0x0040         /* softc not allocated by us */
 134 #define DF_ASYNCPROBE   0x0080          /* can be probed with its own thread */
 135         u_char          order;          /* order from device_add_child_ordered() */
 136         u_char          pad;
 137         void            *ivars;
 138         void            *softc;
 139
 140         struct sysctl_ctx_list sysctl_ctx; /**< state for sysctl variables  */
 141         struct sysctl_oid *sysctl_tree; /**< state for sysctl variables */
 142 };
 143
 144 struct device_op_desc {
 145         unsigned int    offset;         /* offset in driver ops */
 146         struct method*  method;         /* internal method implementation */
 147         devop_t         deflt;          /* default implementation */
 148         const char*     name;           /* unique name (for registration) */
 149 };
 150
 151 #endif  /* _KERNEL || _KERNEL_STRUCTURES */
 152 #endif  /* !_SYS_BUS_PRIVATE_H_ */