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