drivers/w1/w1_netlink.h

   1 /*
   2  * w1_netlink.h
   3  *
   4  * Copyright (c) 2003 Evgeniy Polyakov <zbr@ioremap.net>
   5  *
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #ifndef __W1_NETLINK_H
  23 #define __W1_NETLINK_H
  24
  25 #include <asm/types.h>
  26 #include <linux/connector.h>
  27
  28 #include "w1.h"
  29
  30 /**
  31  * enum w1_netlink_message_types - message type
  32  *
  33  * @W1_SLAVE_ADD: notification that a slave device was added
  34  * @W1_SLAVE_REMOVE: notification that a slave device was removed
  35  * @W1_MASTER_ADD: notification that a new bus master was added
  36  * @W1_MASTER_REMOVE: notification that a bus masterwas removed
  37  * @W1_MASTER_CMD: initiate operations on a specific master
  38  * @W1_SLAVE_CMD: sends reset, selects the slave, then does a read/write/touch
  39  * operation
  40  * @W1_LIST_MASTERS: used to determine the bus master identifiers
  41  */
  42 enum w1_netlink_message_types {
  43         W1_SLAVE_ADD = 0,
  44         W1_SLAVE_REMOVE,
  45         W1_MASTER_ADD,
  46         W1_MASTER_REMOVE,
  47         W1_MASTER_CMD,
  48         W1_SLAVE_CMD,
  49         W1_LIST_MASTERS,
  50 };
  51
  52 struct w1_netlink_msg
  53 {
  54         __u8                            type;
  55         __u8                            status;
  56         __u16                           len;
  57         union {
  58                 __u8                    id[8];
  59                 struct w1_mst {
  60                         __u32           id;
  61                         __u32           res;
  62                 } mst;
  63         } id;
  64         __u8                            data[0];
  65 };
  66
  67 /**
  68  * enum w1_commands - commands available for master or slave operations
  69  * @W1_CMD_READ: read len bytes
  70  * @W1_CMD_WRITE: write len bytes
  71  * @W1_CMD_SEARCH: initiate a standard search, returns only the slave
  72  * devices found during that search
  73  * @W1_CMD_ALARM_SEARCH: search for devices that are currently alarming
  74  * @W1_CMD_TOUCH: Touches a series of bytes.
  75  * @W1_CMD_RESET: sends a bus reset on the given master
  76  * @W1_CMD_SLAVE_ADD: adds a slave to the given master,
  77  * 8 byte slave id at data[0]
  78  * @W1_CMD_SLAVE_REMOVE: removes a slave to the given master,
  79  * 8 byte slave id at data[0]
  80  * @W1_CMD_LIST_SLAVES: list of slaves registered on this master
  81  * @W1_CMD_MAX: number of available commands
  82  */
  83 enum w1_commands {
  84         W1_CMD_READ = 0,
  85         W1_CMD_WRITE,
  86         W1_CMD_SEARCH,
  87         W1_CMD_ALARM_SEARCH,
  88         W1_CMD_TOUCH,
  89         W1_CMD_RESET,
  90         W1_CMD_SLAVE_ADD,
  91         W1_CMD_SLAVE_REMOVE,
  92         W1_CMD_LIST_SLAVES,
  93         W1_CMD_MAX
  94 };
  95
  96 struct w1_netlink_cmd
  97 {
  98         __u8                            cmd;
  99         __u8                            res;
 100         __u16                           len;
 101         __u8                            data[0];
 102 };
 103
 104 #ifdef __KERNEL__
 105
 106 void w1_netlink_send(struct w1_master *, struct w1_netlink_msg *);
 107 int w1_init_netlink(void);
 108 void w1_fini_netlink(void);
 109
 110 #endif /* __KERNEL__ */
 111 #endif /* __W1_NETLINK_H */