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 *
22 * This file contains the main LLCP entry points
23 *
24 ******************************************************************************/
25
26 #include <string.h>
27 #include "gki.h"
28 #include "nfc_target.h"
29 #include "bt_types.h"
30 #include "llcp_api.h"
31 #include "llcp_int.h"
32 #include "llcp_defs.h"
33 #include "nfc_int.h"
34
35 #if (LLCP_DYNAMIC_MEMORY == FALSE)
36 tLLCP_CB llcp_cb;
37 #endif
38
39 /*******************************************************************************
40 **
41 ** Function llcp_init
42 **
43 ** Description This function is called once at startup to initialize
44 ** all the LLCP structures
45 **
46 ** Returns void
47 **
48 *******************************************************************************/
llcp_init(void)49 void llcp_init (void)
50 {
51 UINT32 pool_count;
52
53 memset (&llcp_cb, 0, sizeof (tLLCP_CB));
54
55 llcp_cb.trace_level = LLCP_INITIAL_TRACE_LEVEL;
56
57 LLCP_TRACE_DEBUG0 ("LLCP - llcp_init ()");
58
59 llcp_cb.lcb.local_link_miu = (LLCP_MIU <= LLCP_MAX_MIU ? LLCP_MIU : LLCP_MAX_MIU);
60 llcp_cb.lcb.local_opt = LLCP_OPT_VALUE;
61 llcp_cb.lcb.local_wt = LLCP_WAITING_TIME;
62 llcp_cb.lcb.local_lto = LLCP_LTO_VALUE;
63
64 llcp_cb.lcb.inact_timeout_init = LLCP_INIT_INACTIVITY_TIMEOUT;
65 llcp_cb.lcb.inact_timeout_target = LLCP_TARGET_INACTIVITY_TIMEOUT;
66 llcp_cb.lcb.symm_delay = LLCP_DELAY_RESP_TIME;
67 llcp_cb.lcb.data_link_timeout = LLCP_DATA_LINK_CONNECTION_TOUT;
68 llcp_cb.lcb.delay_first_pdu_timeout = LLCP_DELAY_TIME_TO_SEND_FIRST_PDU;
69
70 llcp_cb.lcb.wks = LLCP_WKS_MASK_LM;
71
72 /* total number of buffers for LLCP */
73 pool_count = GKI_poolcount (LLCP_POOL_ID);
74
75 /* number of buffers for receiving data */
76 llcp_cb.num_rx_buff = (pool_count * LLCP_RX_BUFF_RATIO) / 100;
77
78 /* rx congestion start/end threshold */
79 llcp_cb.overall_rx_congest_start = (UINT8) ((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_START) / 100);
80 llcp_cb.overall_rx_congest_end = (UINT8) ((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_END) / 100);
81
82 /* max number of buffers for receiving data on logical data link */
83 llcp_cb.max_num_ll_rx_buff = (UINT8) ((llcp_cb.num_rx_buff * LLCP_LL_RX_BUFF_LIMIT) / 100);
84
85 LLCP_TRACE_DEBUG4 ("num_rx_buff = %d, rx_congest_start = %d, rx_congest_end = %d, max_num_ll_rx_buff = %d",
86 llcp_cb.num_rx_buff, llcp_cb.overall_rx_congest_start,
87 llcp_cb.overall_rx_congest_end, llcp_cb.max_num_ll_rx_buff);
88
89 /* max number of buffers for transmitting data */
90 llcp_cb.max_num_tx_buff = (UINT8) (pool_count - llcp_cb.num_rx_buff);
91
92 /* max number of buffers for transmitting data on logical data link */
93 llcp_cb.max_num_ll_tx_buff = (UINT8) ((llcp_cb.max_num_tx_buff * LLCP_LL_TX_BUFF_LIMIT) / 100);
94
95 LLCP_TRACE_DEBUG2 ("max_num_tx_buff = %d, max_num_ll_tx_buff = %d",
96 llcp_cb.max_num_tx_buff, llcp_cb.max_num_ll_tx_buff);
97
98 llcp_cb.ll_tx_uncongest_ntf_start_sap = LLCP_SAP_SDP + 1;
99
100 LLCP_RegisterServer (LLCP_SAP_SDP, LLCP_LINK_TYPE_DATA_LINK_CONNECTION, "urn:nfc:sn:sdp", llcp_sdp_proc_data);
101 }
102
103 /*******************************************************************************
104 **
105 ** Function llcp_cleanup
106 **
107 ** Description This function is called once at closing to clean up
108 **
109 ** Returns void
110 **
111 *******************************************************************************/
llcp_cleanup(void)112 void llcp_cleanup (void)
113 {
114 UINT8 sap;
115 tLLCP_APP_CB *p_app_cb;
116
117 LLCP_TRACE_DEBUG0 ("LLCP - llcp_cleanup ()");
118
119 for (sap = LLCP_SAP_SDP; sap < LLCP_NUM_SAPS; sap++)
120 {
121 p_app_cb = llcp_util_get_app_cb (sap);
122
123 if ( (p_app_cb)
124 &&(p_app_cb->p_app_cback) )
125 {
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 *******************************************************************************/
llcp_process_timeout(TIMER_LIST_ENT * p_tle)143 void llcp_process_timeout (TIMER_LIST_ENT *p_tle)
144 {
145 UINT8 reason;
146
147 LLCP_TRACE_DEBUG1 ("llcp_process_timeout: event=%d", p_tle->event);
148
149 switch (p_tle->event)
150 {
151 case NFC_TTYPE_LLCP_LINK_MANAGER:
152 /* Link timeout or Symm timeout */
153 llcp_link_process_link_timeout ();
154 break;
155
156 case NFC_TTYPE_LLCP_LINK_INACT:
157 /* inactivity timeout */
158 llcp_link_deactivate (LLCP_LINK_LOCAL_INITIATED);
159 break;
160
161 case NFC_TTYPE_LLCP_DATA_LINK:
162 reason = LLCP_SAP_DISCONNECT_REASON_TIMEOUT;
163 llcp_dlsm_execute ((tLLCP_DLCB *) (p_tle->param), LLCP_DLC_EVENT_TIMEOUT, &reason);
164 break;
165
166 case NFC_TTYPE_LLCP_DELAY_FIRST_PDU:
167 llcp_link_check_send_data ();
168 break;
169
170 default:
171 break;
172 }
173 }
174
175 /*******************************************************************************
176 **
177 ** Function LLCP_SetTraceLevel
178 **
179 ** Description This function sets the trace level for LLCP. If called with
180 ** a value of 0xFF, it simply returns the current trace level.
181 **
182 ** Returns The new or current trace level
183 **
184 *******************************************************************************/
LLCP_SetTraceLevel(UINT8 new_level)185 UINT8 LLCP_SetTraceLevel (UINT8 new_level)
186 {
187 if (new_level != 0xFF)
188 llcp_cb.trace_level = new_level;
189
190 return (llcp_cb.trace_level);
191 }
192