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
41 extern tHCI_IF *p_hci_if;
42 void lpm_vnd_cback(uint8_t vnd_result);
43
44 /******************************************************************************
45 ** Variables
46 ******************************************************************************/
47
48 bt_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 ******************************************************************************/
fwcfg_cb(bt_vendor_op_result_t result)65 static 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 ******************************************************************************/
scocfg_cb(bt_vendor_op_result_t result)85 static 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 ******************************************************************************/
lpm_vnd_cb(bt_vendor_op_result_t result)102 static 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 ******************************************************************************/
alloc(int size)120 static 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 ******************************************************************************/
dealloc(void * p_buf)141 static 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 ******************************************************************************/
xmit_cb(uint16_t opcode,void * p_buf,tINT_CMD_CBACK p_cback)160 static 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 ** The libbt-vendor Callback Functions Table
167 *****************************************************************************/
168 static const bt_vendor_callbacks_t vnd_callbacks = {
169 sizeof(bt_vendor_callbacks_t),
170 fwcfg_cb,
171 scocfg_cb,
172 lpm_vnd_cb,
173 alloc,
174 dealloc,
175 xmit_cb
176 };
177
178 /******************************************************************************
179 **
180 ** Function init_vnd_if
181 **
182 ** Description Initialize vendor lib interface
183 **
184 ** Returns None
185 **
186 ******************************************************************************/
init_vnd_if(unsigned char * local_bdaddr)187 void init_vnd_if(unsigned char *local_bdaddr)
188 {
189 void *dlhandle;
190
191 dlhandle = dlopen("libbt-vendor.so", RTLD_NOW);
192 if (!dlhandle)
193 {
194 ALOGE("!!! Failed to load libbt-vendor.so !!!");
195 return;
196 }
197
198 bt_vnd_if = (bt_vendor_interface_t *) dlsym(dlhandle, "BLUETOOTH_VENDOR_LIB_INTERFACE");
199 if (!bt_vnd_if)
200 {
201 ALOGE("!!! Failed to get bt vendor interface !!!");
202 return;
203 }
204
205 bt_vnd_if->init(&vnd_callbacks, local_bdaddr);
206 }
207
208