1 /*

     2  * Convenience functions for bluetooth.

     3  *

     4  * Copyright (C) 2008 Andrzej Zaborowski  <balrog@zabor.org>

     5  *

     6  * This program is free software; you can redistribute it and/or

     7  * modify it under the terms of the GNU General Public License as

     8  * published by the Free Software Foundation; either version 2 or

     9  * (at your option) version 3 of the License.

    10  *

    11  * This program is distributed in the hope that it will be useful,

    12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    14  * GNU General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU General Public License

    17  * along with this program; if not, write to the Free Software

    18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,

    19  * MA 02111-1307 USA

    20  */

    21 

    22 #include "qemu-common.h"

    23 #include "net.h"

    24 #include "bt.h"

    25 

    26 /* Slave implementations can ignore this */

    27 static void bt_dummy_lmp_mode_change(struct bt_link_s *link)

    28 {

    29 }

    30 

    31 /* Slaves should never receive these PDUs */

    32 static void bt_dummy_lmp_connection_complete(struct bt_link_s *link)

    33 {

    34     if (link->slave->reject_reason)

    35         fprintf(stderr, "%s: stray LMP_not_accepted received, fixme\n",

    36                         __FUNCTION__);

    37     else

    38         fprintf(stderr, "%s: stray LMP_accepted received, fixme\n",

    39                         __FUNCTION__);

    40     exit(-1);

    41 }

    42 

    43 static void bt_dummy_lmp_disconnect_master(struct bt_link_s *link)

    44 {

    45     fprintf(stderr, "%s: stray LMP_detach received, fixme\n", __FUNCTION__);

    46     exit(-1);

    47 }

    48 

    49 static void bt_dummy_lmp_acl_resp(struct bt_link_s *link,

    50                 const uint8_t *data, int start, int len)

    51 {

    52     fprintf(stderr, "%s: stray ACL response PDU, fixme\n", __FUNCTION__);

    53     exit(-1);

    54 }

    55 

    56 /* Slaves that don't hold any additional per link state can use these */

    57 static void bt_dummy_lmp_connection_request(struct bt_link_s *req)

    58 {

    59     struct bt_link_s *link = qemu_mallocz(sizeof(struct bt_link_s));

    60 

    61     link->slave = req->slave;

    62     link->host = req->host;

    63 

    64     req->host->reject_reason = 0;

    65     req->host->lmp_connection_complete(link);

    66 }

    67 

    68 static void bt_dummy_lmp_disconnect_slave(struct bt_link_s *link)

    69 {

    70     qemu_free(link);

    71 }

    72 

    73 static void bt_dummy_destroy(struct bt_device_s *device)

    74 {

    75     bt_device_done(device);

    76     qemu_free(device);

    77 }

    78 

    79 static int bt_dev_idx = 0;

    80 

    81 void bt_device_init(struct bt_device_s *dev, struct bt_scatternet_s *net)

    82 {

    83     memset(dev, 0, sizeof(*dev));

    84     dev->inquiry_scan = 1;

    85     dev->page_scan = 1;

    86 

    87     dev->bd_addr.b[0] = bt_dev_idx & 0xff;

    88     dev->bd_addr.b[1] = bt_dev_idx >> 8;

    89     dev->bd_addr.b[2] = 0xd0;

    90     dev->bd_addr.b[3] = 0xba;

    91     dev->bd_addr.b[4] = 0xbe;

    92     dev->bd_addr.b[5] = 0xba;

    93     bt_dev_idx ++;

    94 

    95     /* Simple slave-only devices need to implement only .lmp_acl_data */

    96     dev->lmp_connection_complete = bt_dummy_lmp_connection_complete;

    97     dev->lmp_disconnect_master = bt_dummy_lmp_disconnect_master;

    98     dev->lmp_acl_resp = bt_dummy_lmp_acl_resp;

    99     dev->lmp_mode_change = bt_dummy_lmp_mode_change;

   100     dev->lmp_connection_request = bt_dummy_lmp_connection_request;

   101     dev->lmp_disconnect_slave = bt_dummy_lmp_disconnect_slave;

   102 

   103     dev->handle_destroy = bt_dummy_destroy;

   104 

   105     dev->net = net;

   106     dev->next = net->slave;

   107     net->slave = dev;

   108 }

   109 

   110 void bt_device_done(struct bt_device_s *dev)

   111 {

   112     struct bt_device_s **p = &dev->net->slave;

   113 

   114     while (*p && *p != dev)

   115         p = &(*p)->next;

   116     if (*p != dev) {

   117         fprintf(stderr, "%s: bad bt device \"%s\"\n", __FUNCTION__,

   118                         dev->lmp_name ?: "(null)");

   119         exit(-1);

   120     }

   121 

   122     *p = dev->next;

   123 }