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-common.h"
21#include "net.h"
22#include "bt.h"
23
24/* Slave implementations can ignore this */
25static void bt_dummy_lmp_mode_change(struct bt_link_s *link)
26{
27}
28
29/* Slaves should never receive these PDUs */
30static void bt_dummy_lmp_connection_complete(struct bt_link_s *link)
31{
32    if (link->slave->reject_reason)
33        fprintf(stderr, "%s: stray LMP_not_accepted received, fixme\n",
34                        __FUNCTION__);
35    else
36        fprintf(stderr, "%s: stray LMP_accepted received, fixme\n",
37                        __FUNCTION__);
38    exit(-1);
39}
40
41static void bt_dummy_lmp_disconnect_master(struct bt_link_s *link)
42{
43    fprintf(stderr, "%s: stray LMP_detach received, fixme\n", __FUNCTION__);
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    fprintf(stderr, "%s: stray ACL response PDU, fixme\n", __FUNCTION__);
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 = qemu_mallocz(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    qemu_free(link);
69}
70
71static void bt_dummy_destroy(struct bt_device_s *device)
72{
73    bt_device_done(device);
74    qemu_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        fprintf(stderr, "%s: bad bt device \"%s\"\n", __FUNCTION__,
116                        dev->lmp_name ?: "(null)");
117        exit(-1);
118    }
119
120    *p = dev->next;
121}
122