1 /****************************************************************************** 2 * 3 * Copyright (C) 2010-2014 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 * This file contains the main LLCP entry points 22 * 23 ******************************************************************************/ 24 25 #include <string.h> 26 #include "bt_types.h" 27 #include "gki.h" 28 #include "llcp_api.h" 29 #include "llcp_defs.h" 30 #include "llcp_int.h" 31 #include "nfc_int.h" 32 #include "nfc_target.h" 33 34 tLLCP_CB llcp_cb; 35 36 /******************************************************************************* 37 ** 38 ** Function llcp_init 39 ** 40 ** Description This function is called once at startup to initialize 41 ** all the LLCP structures 42 ** 43 ** Returns void 44 ** 45 *******************************************************************************/ 46 void llcp_init(void) { 47 uint32_t pool_count; 48 49 memset(&llcp_cb, 0, sizeof(tLLCP_CB)); 50 51 llcp_cb.trace_level = LLCP_INITIAL_TRACE_LEVEL; 52 53 LLCP_TRACE_DEBUG0("LLCP - llcp_init ()"); 54 55 llcp_cb.lcb.local_link_miu = 56 (LLCP_MIU <= LLCP_MAX_MIU ? LLCP_MIU : LLCP_MAX_MIU); 57 llcp_cb.lcb.local_opt = LLCP_OPT_VALUE; 58 llcp_cb.lcb.local_wt = LLCP_WAITING_TIME; 59 llcp_cb.lcb.local_lto = LLCP_LTO_VALUE; 60 61 llcp_cb.lcb.inact_timeout_init = LLCP_INIT_INACTIVITY_TIMEOUT; 62 llcp_cb.lcb.inact_timeout_target = LLCP_TARGET_INACTIVITY_TIMEOUT; 63 llcp_cb.lcb.symm_delay = LLCP_DELAY_RESP_TIME; 64 llcp_cb.lcb.data_link_timeout = LLCP_DATA_LINK_CONNECTION_TOUT; 65 llcp_cb.lcb.delay_first_pdu_timeout = LLCP_DELAY_TIME_TO_SEND_FIRST_PDU; 66 67 llcp_cb.lcb.wks = LLCP_WKS_MASK_LM; 68 69 /* total number of buffers for LLCP */ 70 pool_count = GKI_poolcount(LLCP_POOL_ID); 71 72 /* number of buffers for receiving data */ 73 llcp_cb.num_rx_buff = (pool_count * LLCP_RX_BUFF_RATIO) / 100; 74 75 /* rx congestion start/end threshold */ 76 llcp_cb.overall_rx_congest_start = 77 (uint8_t)((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_START) / 100); 78 llcp_cb.overall_rx_congest_end = 79 (uint8_t)((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_END) / 100); 80 81 /* max number of buffers for receiving data on logical data link */ 82 llcp_cb.max_num_ll_rx_buff = 83 (uint8_t)((llcp_cb.num_rx_buff * LLCP_LL_RX_BUFF_LIMIT) / 100); 84 85 LLCP_TRACE_DEBUG4( 86 "num_rx_buff = %d, rx_congest_start = %d, rx_congest_end = %d, " 87 "max_num_ll_rx_buff = %d", 88 llcp_cb.num_rx_buff, llcp_cb.overall_rx_congest_start, 89 llcp_cb.overall_rx_congest_end, llcp_cb.max_num_ll_rx_buff); 90 91 /* max number of buffers for transmitting data */ 92 llcp_cb.max_num_tx_buff = (uint8_t)(pool_count - llcp_cb.num_rx_buff); 93 94 /* max number of buffers for transmitting data on logical data link */ 95 llcp_cb.max_num_ll_tx_buff = 96 (uint8_t)((llcp_cb.max_num_tx_buff * LLCP_LL_TX_BUFF_LIMIT) / 100); 97 98 LLCP_TRACE_DEBUG2("max_num_tx_buff = %d, max_num_ll_tx_buff = %d", 99 llcp_cb.max_num_tx_buff, llcp_cb.max_num_ll_tx_buff); 100 101 llcp_cb.ll_tx_uncongest_ntf_start_sap = LLCP_SAP_SDP + 1; 102 103 LLCP_RegisterServer(LLCP_SAP_SDP, LLCP_LINK_TYPE_DATA_LINK_CONNECTION, 104 "urn:nfc:sn:sdp", llcp_sdp_proc_data); 105 } 106 107 /******************************************************************************* 108 ** 109 ** Function llcp_cleanup 110 ** 111 ** Description This function is called once at closing to clean up 112 ** 113 ** Returns void 114 ** 115 *******************************************************************************/ 116 void llcp_cleanup(void) { 117 uint8_t sap; 118 tLLCP_APP_CB* p_app_cb; 119 120 LLCP_TRACE_DEBUG0("LLCP - llcp_cleanup ()"); 121 122 for (sap = LLCP_SAP_SDP; sap < LLCP_NUM_SAPS; sap++) { 123 p_app_cb = llcp_util_get_app_cb(sap); 124 125 if ((p_app_cb) && (p_app_cb->p_app_cback)) { 126 LLCP_Deregister(sap); 127 } 128 } 129 130 nfc_stop_quick_timer(&llcp_cb.lcb.inact_timer); 131 nfc_stop_quick_timer(&llcp_cb.lcb.timer); 132 } 133 134 /******************************************************************************* 135 ** 136 ** Function llcp_process_timeout 137 ** 138 ** Description This function is called when an LLCP-related timeout occurs 139 ** 140 ** Returns void 141 ** 142 *******************************************************************************/ 143 void llcp_process_timeout(TIMER_LIST_ENT* p_tle) { 144 uint8_t reason; 145 146 LLCP_TRACE_DEBUG1("llcp_process_timeout: event=%d", p_tle->event); 147 148 switch (p_tle->event) { 149 case NFC_TTYPE_LLCP_LINK_MANAGER: 150 /* Link timeout or Symm timeout */ 151 llcp_link_process_link_timeout(); 152 break; 153 154 case NFC_TTYPE_LLCP_LINK_INACT: 155 /* inactivity timeout */ 156 llcp_link_deactivate(LLCP_LINK_LOCAL_INITIATED); 157 break; 158 159 case NFC_TTYPE_LLCP_DATA_LINK: 160 reason = LLCP_SAP_DISCONNECT_REASON_TIMEOUT; 161 llcp_dlsm_execute((tLLCP_DLCB*)(p_tle->param), LLCP_DLC_EVENT_TIMEOUT, 162 &reason); 163 break; 164 165 case NFC_TTYPE_LLCP_DELAY_FIRST_PDU: 166 llcp_link_check_send_data(); 167 break; 168 169 default: 170 break; 171 } 172 } 173 174 /******************************************************************************* 175 ** 176 ** Function LLCP_SetTraceLevel 177 ** 178 ** Description This function sets the trace level for LLCP. If called with 179 ** a value of 0xFF, it simply returns the current trace level. 180 ** 181 ** Returns The new or current trace level 182 ** 183 *******************************************************************************/ 184 uint8_t LLCP_SetTraceLevel(uint8_t new_level) { 185 if (new_level != 0xFF) llcp_cb.trace_level = new_level; 186 187 return (llcp_cb.trace_level); 188 } 189
