LXR qemu/hw/bt/core.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 along
  17 * with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "qemu-common.h"
  22#include "sysemu/bt.h"
  23#include "hw/bt.h"
  24
  25/* Slave implementations can ignore this */
  26static void bt_dummy_lmp_mode_change(struct bt_link_s *link)
  27{
  28}
  29
  30/* Slaves should never receive these PDUs */
  31static void bt_dummy_lmp_connection_complete(struct bt_link_s *link)
  32{
  33    if (link->slave->reject_reason)
  34        fprintf(stderr, "%s: stray LMP_not_accepted received, fixme\n",
  35                        __FUNCTION__);
  36    else
  37        fprintf(stderr, "%s: stray LMP_accepted received, fixme\n",
  38                        __FUNCTION__);
  39    exit(-1);
  40}
  41
  42static void bt_dummy_lmp_disconnect_master(struct bt_link_s *link)
  43{
  44    fprintf(stderr, "%s: stray LMP_detach received, fixme\n", __FUNCTION__);
  45    exit(-1);
  46}
  47
  48static void bt_dummy_lmp_acl_resp(struct bt_link_s *link,
  49                const uint8_t *data, int start, int len)
  50{
  51    fprintf(stderr, "%s: stray ACL response PDU, fixme\n", __FUNCTION__);
  52    exit(-1);
  53}
  54
  55/* Slaves that don't hold any additional per link state can use these */
  56static void bt_dummy_lmp_connection_request(struct bt_link_s *req)
  57{
  58    struct bt_link_s *link = g_malloc0(sizeof(struct bt_link_s));
  59
  60    link->slave = req->slave;
  61    link->host = req->host;
  62
  63    req->host->reject_reason = 0;
  64    req->host->lmp_connection_complete(link);
  65}
  66
  67static void bt_dummy_lmp_disconnect_slave(struct bt_link_s *link)
  68{
  69    g_free(link);
  70}
  71
  72static void bt_dummy_destroy(struct bt_device_s *device)
  73{
  74    bt_device_done(device);
  75    g_free(device);
  76}
  77
  78static int bt_dev_idx = 0;
  79
  80void bt_device_init(struct bt_device_s *dev, struct bt_scatternet_s *net)
  81{
  82    memset(dev, 0, sizeof(*dev));
  83    dev->inquiry_scan = 1;
  84    dev->page_scan = 1;
  85
  86    dev->bd_addr.b[0] = bt_dev_idx & 0xff;
  87    dev->bd_addr.b[1] = bt_dev_idx >> 8;
  88    dev->bd_addr.b[2] = 0xd0;
  89    dev->bd_addr.b[3] = 0xba;
  90    dev->bd_addr.b[4] = 0xbe;
  91    dev->bd_addr.b[5] = 0xba;
  92    bt_dev_idx ++;
  93
  94    /* Simple slave-only devices need to implement only .lmp_acl_data */
  95    dev->lmp_connection_complete = bt_dummy_lmp_connection_complete;
  96    dev->lmp_disconnect_master = bt_dummy_lmp_disconnect_master;
  97    dev->lmp_acl_resp = bt_dummy_lmp_acl_resp;
  98    dev->lmp_mode_change = bt_dummy_lmp_mode_change;
  99    dev->lmp_connection_request = bt_dummy_lmp_connection_request;
 100    dev->lmp_disconnect_slave = bt_dummy_lmp_disconnect_slave;
 101
 102    dev->handle_destroy = bt_dummy_destroy;
 103
 104    dev->net = net;
 105    dev->next = net->slave;
 106    net->slave = dev;
 107}
 108
 109void bt_device_done(struct bt_device_s *dev)
 110{
 111    struct bt_device_s **p = &dev->net->slave;
 112
 113    while (*p && *p != dev)
 114        p = &(*p)->next;
 115    if (*p != dev) {
 116        fprintf(stderr, "%s: bad bt device \"%s\"\n", __FUNCTION__,
 117                        dev->lmp_name ?: "(null)");
 118        exit(-1);
 119    }
 120
 121    *p = dev->next;
 122}
 123
 124static struct bt_vlan_s {
 125    struct bt_scatternet_s net;
 126    int id;
 127    struct bt_vlan_s *next;
 128} *first_bt_vlan;
 129
 130/* find or alloc a new bluetooth "VLAN" */
 131struct bt_scatternet_s *qemu_find_bt_vlan(int id)
 132{
 133    struct bt_vlan_s **pvlan, *vlan;
 134    for (vlan = first_bt_vlan; vlan != NULL; vlan = vlan->next) {
 135        if (vlan->id == id)
 136            return &vlan->net;
 137    }
 138    vlan = g_malloc0(sizeof(struct bt_vlan_s));
 139    vlan->id = id;
 140    pvlan = &first_bt_vlan;
 141    while (*pvlan != NULL)
 142        pvlan = &(*pvlan)->next;
 143    *pvlan = vlan;
 144    return &vlan->net;
 145}
 146