minix/servers/devman/devman.h

   1 #ifndef _SERVERS_DEVMAN_DEVMAN_H
   2 #define _SERVERS_DEVMAN_DEVMAN_H
   3 #define _SYSTEM         1       /* tell headers that this is the kernel */
   4 #define DEVMAN_SERVER   1
   5
   6 #include <minix/config.h>
   7 #include <errno.h>
   8 #include <unistd.h>
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <lib.h>
  13 #include <minix/timers.h>
  14
  15 #include <minix/callnr.h>
  16 #include <minix/type.h>
  17 #include <minix/const.h>
  18 #include <minix/com.h>
  19 #include <minix/syslib.h>
  20 #include <minix/sysutil.h>
  21 #include <minix/vfsif.h>
  22 #include <minix/endpoint.h>
  23 #include <minix/sysinfo.h>
  24 #include <minix/u64.h>
  25 #include <minix/sysinfo.h>
  26 #include <minix/type.h>
  27 #include <minix/ipc.h>
  28
  29 #include <sys/time.h>
  30 #include <sys/times.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33
  34 #include <minix/vtreefs.h>
  35
  36 #include <minix/devman.h>
  37 #include <sys/queue.h>
  38
  39 #define BUF_SIZE 4097
  40
  41 #define DEVMAN_DEFAULT_MODE   (S_IRUSR | S_IRGRP | S_IROTH)
  42 #define DEVMAN_STRING_LEN 128
  43
  44 #define ADD_STRING "ADD "
  45 #define REMOVE_STRING "REMOVE "
  46
  47 enum devman_inode_type {
  48         DEVMAN_DEVINFO_STATIC,
  49         DEVMAN_DEVINFO_DYNAMIC,
  50         DEVMAN_DEVICE
  51 };
  52
  53 typedef ssize_t (*devman_read_fn)
  54     (char *ptr, size_t len, off_t offset, void *data);
  55
  56 struct devman_device_file {
  57         int minor;
  58         int type;
  59 };
  60
  61 struct devman_static_info_inode {
  62         struct devman_device *dev;
  63         char data[DEVMAN_STRING_LEN];
  64 };
  65
  66 struct devman_event {
  67         char data[DEVMAN_STRING_LEN];
  68         TAILQ_ENTRY(devman_event) events;
  69 };
  70
  71 struct devman_event_inode {
  72         TAILQ_HEAD(event_head, devman_event) event_queue;
  73 };
  74
  75 struct devman_inode {
  76         struct inode *inode;
  77         devman_read_fn read_fn;
  78         void *data;
  79         TAILQ_ENTRY(devman_inode) inode_list;
  80 };
  81
  82 struct devman_device {
  83         int dev_id;
  84         char * name;
  85
  86         int ref_count;
  87
  88         int major;
  89 #define DEVMAN_DEVICE_ZOMBIE 2
  90 #define DEVMAN_DEVICE_BOUND 1
  91 #define DEVMAN_DEVICE_UNBOUND 0
  92         int state;
  93
  94         endpoint_t owner;
  95
  96         struct devman_inode inode;
  97         struct devman_device *parent;
  98
  99         /* the serialized information on this device */
 100         struct devman_device_info *info;
 101
 102         TAILQ_ENTRY(devman_device) siblings;
 103
 104         /* devices attached to the this device */
 105         TAILQ_HEAD(children_head, devman_device) children;
 106         TAILQ_HEAD(info_head, devman_inode) infos;
 107 };
 108 #endif