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 extern uint8_t fwcfg_acked;
43 void lpm_vnd_cback(uint8_t vnd_result);
44
45 /******************************************************************************
46 ** Variables
47 ******************************************************************************/
48
49 bt_vendor_interface_t *bt_vnd_if=NULL;
50
51 /******************************************************************************
52 ** Functions
53 ******************************************************************************/
54
55 /******************************************************************************
56 **
57 ** Function fwcfg_cb
58 **
59 ** Description HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
60 ** called when the libbt-vendor completed firmware
61 ** configuration process
62 **
63 ** Returns None
64 **
65 ******************************************************************************/
fwcfg_cb(bt_vendor_op_result_t result)66 static void fwcfg_cb(bt_vendor_op_result_t result)
67 {
68 bt_hc_postload_result_t status = (result == BT_VND_OP_RESULT_SUCCESS) ? \
69 BT_HC_PRELOAD_SUCCESS : BT_HC_PRELOAD_FAIL;
70
71 fwcfg_acked = TRUE;
72
73 if (bt_hc_cbacks)
74 bt_hc_cbacks->preload_cb(NULL, status);
75 }
76
77 /******************************************************************************
78 **
79 ** Function scocfg_cb
80 **
81 ** Description HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
82 ** called when the libbt-vendor completed vendor specific SCO
83 ** configuration process
84 **
85 ** Returns None
86 **
87 ******************************************************************************/
scocfg_cb(bt_vendor_op_result_t result)88 static void scocfg_cb(bt_vendor_op_result_t result)
89 {
90 /* Continue rest of postload process*/
91 p_hci_if->get_acl_max_len();
92 }
93
94 /******************************************************************************
95 **
96 ** Function lpm_vnd_cb
97 **
98 ** Description HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
99 ** called back from the libbt-vendor to indicate the result of
100 ** previous LPM enable/disable request
101 **
102 ** Returns None
103 **
104 ******************************************************************************/
lpm_vnd_cb(bt_vendor_op_result_t result)105 static void lpm_vnd_cb(bt_vendor_op_result_t result)
106 {
107 uint8_t status = (result == BT_VND_OP_RESULT_SUCCESS) ? 0 : 1;
108
109 lpm_vnd_cback(status);
110 }
111
112 /******************************************************************************
113 **
114 ** Function alloc
115 **
116 ** Description HOST/CONTROLLER VENDOR LIB CALLOUT API - This function is
117 ** called from the libbt-vendor to request for data buffer
118 ** allocation
119 **
120 ** Returns NULL / pointer to allocated buffer
121 **
122 ******************************************************************************/
alloc(int size)123 static void *alloc(int size)
124 {
125 HC_BT_HDR *p_hdr = NULL;
126
127 if (bt_hc_cbacks)
128 p_hdr = (HC_BT_HDR *) bt_hc_cbacks->alloc(size);
129
130 return (p_hdr);
131 }
132
133 /******************************************************************************
134 **
135 ** Function dealloc
136 **
137 ** Description HOST/CONTROLLER VENDOR LIB CALLOUT API - This function is
138 ** called from the libbt-vendor to release the data buffer
139 ** allocated through the alloc call earlier
140 **
141 ** Returns None
142 **
143 ******************************************************************************/
dealloc(void * p_buf)144 static void dealloc(void *p_buf)
145 {
146 HC_BT_HDR *p_hdr = (HC_BT_HDR *) p_buf;
147
148 if (bt_hc_cbacks)
149 bt_hc_cbacks->dealloc((TRANSAC) p_buf, (char *) (p_hdr+1));
150 }
151
152 /******************************************************************************
153 **
154 ** Function xmit_cb
155 **
156 ** Description HOST/CONTROLLER VEDNOR LIB CALLOUT API - This function is
157 ** called from the libbt-vendor in order to send a prepared
158 ** HCI command packet through HCI transport TX function.
159 **
160 ** Returns TRUE/FALSE
161 **
162 ******************************************************************************/
xmit_cb(uint16_t opcode,void * p_buf,tINT_CMD_CBACK p_cback)163 static uint8_t xmit_cb(uint16_t opcode, void *p_buf, tINT_CMD_CBACK p_cback)
164 {
165 return p_hci_if->send_int_cmd(opcode, (HC_BT_HDR *)p_buf, p_cback);
166 }
167
168 /******************************************************************************
169 **
170 ** Function epilog_cb
171 **
172 ** Description HOST/CONTROLLER VENDOR LIB CALLBACK API - This function is
173 ** called back from the libbt-vendor to indicate the result of
174 ** previous epilog call.
175 **
176 ** Returns None
177 **
178 ******************************************************************************/
epilog_cb(bt_vendor_op_result_t result)179 static void epilog_cb(bt_vendor_op_result_t result)
180 {
181 bthc_signal_event(HC_EVENT_EXIT);
182 }
183
184 /*****************************************************************************
185 ** The libbt-vendor Callback Functions Table
186 *****************************************************************************/
187 static const bt_vendor_callbacks_t vnd_callbacks = {
188 sizeof(bt_vendor_callbacks_t),
189 fwcfg_cb,
190 scocfg_cb,
191 lpm_vnd_cb,
192 alloc,
193 dealloc,
194 xmit_cb,
195 epilog_cb
196 };
197
198 /******************************************************************************
199 **
200 ** Function init_vnd_if
201 **
202 ** Description Initialize vendor lib interface
203 **
204 ** Returns None
205 **
206 ******************************************************************************/
init_vnd_if(unsigned char * local_bdaddr)207 void init_vnd_if(unsigned char *local_bdaddr)
208 {
209 void *dlhandle;
210
211 dlhandle = dlopen("libbt-vendor.so", RTLD_NOW);
212 if (!dlhandle)
213 {
214 ALOGE("!!! Failed to load libbt-vendor.so !!!");
215 return;
216 }
217
218 bt_vnd_if = (bt_vendor_interface_t *) dlsym(dlhandle, "BLUETOOTH_VENDOR_LIB_INTERFACE");
219 if (!bt_vnd_if)
220 {
221 ALOGE("!!! Failed to get bt vendor interface !!!");
222 return;
223 }
224
225 bt_vnd_if->init(&vnd_callbacks, local_bdaddr);
226 }
227
228