bt_hw.c revision 67e4077c23bb9cc045885ae01cc83b38faecb71b 
1/******************************************************************************
2 *
3 *  Copyright (C) 2009-2012 Broadcom Corporation
4 *
5 *  Licensed under the Apache License, Version 2.0 (the "License");
6 *  you may not use this file except in compliance with the License.
7 *  You may obtain a copy of the License at:
8 *
9 *  http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 *
17 ******************************************************************************/
18
19/******************************************************************************
20 *
21 *  Filename:      bt_hw.c
22 *
23 *  Description:   Bluedroid libbt-vendor callback functions
24 *
25 ******************************************************************************/
26
27#define LOG_TAG "bt_hw"
28
29#include <dlfcn.h>
30#include <utils/Log.h>
31#include <pthread.h>
32#include "bt_vendor_lib.h"
33#include "bt_hci_bdroid.h"
34#include "hci.h"
35#include "userial.h"
36
37/******************************************************************************
38**  Externs
39******************************************************************************/
40
41extern tHCI_IF *p_hci_if;
42void lpm_vnd_cback(uint8_t vnd_result);
43
44/******************************************************************************
45**  Variables
46******************************************************************************/
47
48bt_vendor_interface_t *bt_vnd_if=NULL;
49
50/******************************************************************************
51**  Functions
52******************************************************************************/
53
54/******************************************************************************
55**
56** Function         fwcfg_cb
57**
58** Description      HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
59**                  called when the libbt-vendor completed firmware
60**                  configuration process
61**
62** Returns          None
63**
64******************************************************************************/
65static void fwcfg_cb(bt_vendor_op_result_t result)
66{
67    bt_hc_postload_result_t status = (result == BT_VND_OP_RESULT_SUCCESS) ? \
68                                     BT_HC_PRELOAD_SUCCESS : BT_HC_PRELOAD_FAIL;
69
70    if (bt_hc_cbacks)
71        bt_hc_cbacks->preload_cb(NULL, status);
72}
73
74/******************************************************************************
75**
76** Function         scocfg_cb
77**
78** Description      HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
79**                  called when the libbt-vendor completed vendor specific SCO
80**                  configuration process
81**
82** Returns          None
83**
84******************************************************************************/
85static void scocfg_cb(bt_vendor_op_result_t result)
86{
87    /* Continue rest of postload process*/
88    p_hci_if->get_acl_max_len();
89}
90
91/******************************************************************************
92**
93** Function         lpm_vnd_cb
94**
95** Description      HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
96**                  called back from the libbt-vendor to indicate the result of
97**                  previous LPM enable/disable request
98**
99** Returns          None
100**
101******************************************************************************/
102static void lpm_vnd_cb(bt_vendor_op_result_t result)
103{
104    uint8_t status = (result == BT_VND_OP_RESULT_SUCCESS) ? 0 : 1;
105
106    lpm_vnd_cback(status);
107}
108
109/******************************************************************************
110**
111** Function         alloc
112**
113** Description      HOST/CONTROLLER VENDOR LIB CALLOUT API - This function is
114**                  called from the libbt-vendor to request for data buffer
115**                  allocation
116**
117** Returns          NULL / pointer to allocated buffer
118**
119******************************************************************************/
120static void *alloc(int size)
121{
122    HC_BT_HDR *p_hdr = NULL;
123
124    if (bt_hc_cbacks)
125        p_hdr = (HC_BT_HDR *) bt_hc_cbacks->alloc(size);
126
127    return (p_hdr);
128}
129
130/******************************************************************************
131**
132** Function         dealloc
133**
134** Description      HOST/CONTROLLER VENDOR LIB CALLOUT API - This function is
135**                  called from the libbt-vendor to release the data buffer
136**                  allocated through the alloc call earlier
137**
138** Returns          None
139**
140******************************************************************************/
141static void dealloc(void *p_buf)
142{
143    HC_BT_HDR *p_hdr = (HC_BT_HDR *) p_buf;
144
145    if (bt_hc_cbacks)
146        bt_hc_cbacks->dealloc((TRANSAC) p_buf, (char *) (p_hdr+1));
147}
148
149/******************************************************************************
150**
151** Function         xmit_cb
152**
153** Description      HOST/CONTROLLER VEDNOR LIB CALLOUT API - This function is
154**                  called from the libbt-vendor in order to send a prepared
155**                  HCI command packet through HCI transport TX function.
156**
157** Returns          TRUE/FALSE
158**
159******************************************************************************/
160static uint8_t xmit_cb(uint16_t opcode, void *p_buf, tINT_CMD_CBACK p_cback)
161{
162    return p_hci_if->send_int_cmd(opcode, (HC_BT_HDR *)p_buf, p_cback);
163}
164
165/******************************************************************************
166**
167** Function         epilog_cb
168**
169** Description      HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
170**                  called back from the libbt-vendor to indicate the result of
171**                  previous epilog call.
172**
173** Returns          None
174**
175******************************************************************************/
176static void epilog_cb(bt_vendor_op_result_t result)
177{
178    bthc_signal_event(HC_EVENT_EXIT);
179}
180
181/*****************************************************************************
182**   The libbt-vendor Callback Functions Table
183*****************************************************************************/
184static const bt_vendor_callbacks_t vnd_callbacks = {
185    sizeof(bt_vendor_callbacks_t),
186    fwcfg_cb,
187    scocfg_cb,
188    lpm_vnd_cb,
189    alloc,
190    dealloc,
191    xmit_cb,
192    epilog_cb
193};
194
195/******************************************************************************
196**
197** Function         init_vnd_if
198**
199** Description      Initialize vendor lib interface
200**
201** Returns          None
202**
203******************************************************************************/
204void init_vnd_if(unsigned char *local_bdaddr)
205{
206    void *dlhandle;
207
208    dlhandle = dlopen("libbt-vendor.so", RTLD_NOW);
209    if (!dlhandle)
210    {
211        ALOGE("!!! Failed to load libbt-vendor.so !!!");
212        return;
213    }
214
215    bt_vnd_if = (bt_vendor_interface_t *) dlsym(dlhandle, "BLUETOOTH_VENDOR_LIB_INTERFACE");
216    if (!bt_vnd_if)
217    {
218        ALOGE("!!! Failed to get bt vendor interface !!!");
219        return;
220    }
221
222    bt_vnd_if->init(&vnd_callbacks, local_bdaddr);
223}
224
225