hw/bt.c

   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 }