1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17 #include "bt_vendor.h"
18
19 #define UNUSED_PARAM __attribute__((unused))
20 #define HCI_CMD_PREAMBLE_SIZE 3
21 #define HCI_RESET 0x0C03
22 #define HCI_EVT_CMD_CMPL_OPCODE 3
23 #define HCI_EVT_CMD_CMPL_STATUS_RET_BYTE 5
24 #define MSG_STACK_TO_HC_HCI_CMD 0x2000
25 #define BT_HC_HDR_SIZE (sizeof(HC_BT_HDR))
26 #define STREAM_TO_UINT16(u16, p) \
27 { \
28 u16 = ((uint16_t)(*(p)) + (((uint16_t)(*((p) + 1))) << 8)); \
29 (p) += 2; \
30 }
31 #define UINT16_TO_STREAM(p, u16) \
32 { \
33 *(p)++ = (uint8_t)(u16); \
34 *(p)++ = (uint8_t)((u16) >> 8); \
35 }
36 bt_vendor_callbacks_t* bt_vendor_cbacks = nullptr;
37
hw_epilog_cback(void * p_mem)38 void hw_epilog_cback(void* p_mem) {
39 HC_BT_HDR* p_evt_buf = (HC_BT_HDR*)p_mem;
40 uint8_t *p, status;
41 uint16_t opcode;
42
43 status = *((uint8_t*)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_STATUS_RET_BYTE);
44 p = (uint8_t*)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_OPCODE;
45 STREAM_TO_UINT16(opcode, p);
46
47 if (!bt_vendor_cbacks) {
48 return;
49 }
50 /* Must free the RX event buffer */
51 bt_vendor_cbacks->dealloc(p_evt_buf);
52
53 /* Once epilog process is done, must call callback to notify caller */
54 bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
55 return;
56 }
57
testInit(const bt_vendor_callbacks_t * cb,unsigned char * bdaddr UNUSED_PARAM)58 static int testInit(const bt_vendor_callbacks_t* cb,
59 unsigned char* bdaddr UNUSED_PARAM) {
60 if (cb == nullptr) {
61 return -1;
62 }
63 /*store reference to user callbacks */
64 bt_vendor_cbacks = (bt_vendor_callbacks_t*)cb;
65 return 0;
66 }
67
testOperations(bt_vendor_opcode_t opcode,void * param UNUSED_PARAM)68 static int testOperations(bt_vendor_opcode_t opcode, void* param UNUSED_PARAM) {
69 BtVendor* btVendor = BtVendor::getInstance();
70 if (bt_vendor_cbacks) {
71 btVendor->setVendorCback(bt_vendor_cbacks, opcode);
72 }
73 switch (opcode) {
74 case BT_VND_OP_POWER_CTRL: {
75 // No callback for this opcode
76 break;
77 }
78 case BT_VND_OP_USERIAL_OPEN: {
79 int32_t(*fd_array)[] = (int32_t(*)[])param;
80 int32_t fdArray[CH_MAX];
81 *fdArray = *(btVendor->queryFdList());
82 size_t fdcount = btVendor->queryFdCount();
83 for (size_t i = 0; i < fdcount; ++i) {
84 (*fd_array)[i] = fdArray[i];
85 }
86 return fdcount;
87 break;
88 }
89 case BT_VND_OP_FW_CFG: {
90 if (bt_vendor_cbacks) {
91 bt_vendor_cbacks->fwcfg_cb(BT_VND_OP_RESULT_SUCCESS);
92 }
93 break;
94 }
95 case BT_VND_OP_GET_LPM_IDLE_TIMEOUT: {
96 // No callback for this opcode
97 uint32_t* timeout_ms = (uint32_t*)param;
98 *timeout_ms = 0;
99 break;
100 }
101 case BT_VND_OP_LPM_SET_MODE: {
102 if (bt_vendor_cbacks) {
103 bt_vendor_cbacks->lpm_cb(BT_VND_OP_RESULT_SUCCESS);
104 }
105 break;
106 }
107 case BT_VND_OP_USERIAL_CLOSE: {
108 // No callback for this opcode
109 break;
110 }
111 case BT_VND_OP_LPM_WAKE_SET_STATE: {
112 // No callback for this opcode
113 break;
114 }
115 default:
116 break;
117 }
118 return 0;
119 }
120
testCleanup(void)121 static void testCleanup(void) { bt_vendor_cbacks = nullptr; }
122
123 const bt_vendor_interface_t BLUETOOTH_VENDOR_LIB_INTERFACE = {
124 sizeof(bt_vendor_interface_t), testInit, testOperations, testCleanup};
125
populateFdList(int32_t list[],size_t count)126 void BtVendor::populateFdList(int32_t list[], size_t count) {
127 fdCount = count;
128 for (size_t i = 0; i < count; ++i) {
129 fdList[i] = list[i];
130 }
131 }
132
callRemainingCbacks()133 void BtVendor::callRemainingCbacks() {
134 if (mCbacks) {
135 mCbacks->audio_state_cb(BT_VND_OP_RESULT_SUCCESS);
136 mCbacks->scocfg_cb(BT_VND_OP_RESULT_SUCCESS);
137 mCbacks->a2dp_offload_cb(BT_VND_OP_RESULT_SUCCESS, mOpcode, 0);
138 mCbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
139
140 HC_BT_HDR* p_buf = NULL;
141 uint8_t* p;
142
143 /* Sending a HCI_RESET */
144 /* Must allocate command buffer via HC's alloc API */
145 p_buf = (HC_BT_HDR*)mCbacks->alloc(BT_HC_HDR_SIZE + HCI_CMD_PREAMBLE_SIZE);
146 if (p_buf) {
147 p_buf->event = MSG_STACK_TO_HC_HCI_CMD;
148 p_buf->offset = 0;
149 p_buf->layer_specific = 0;
150 p_buf->len = HCI_CMD_PREAMBLE_SIZE;
151
152 p = (uint8_t*)(p_buf + 1);
153 UINT16_TO_STREAM(p, HCI_RESET);
154 *p = 0; /* parameter length */
155
156 /* Send command via HC's xmit_cb API */
157 mCbacks->xmit_cb(HCI_RESET, p_buf, hw_epilog_cback);
158 } else {
159 mCbacks->epilog_cb(BT_VND_OP_RESULT_FAIL);
160 }
161 }
162 }
163