llcp_main.c revision ad483f6fa0128f07fd2187bb9c46c2e3f7728cc5 
1/*****************************************************************************
2**
3**  Name:          llcp_main.c
4**
5**  Description:   This file contains the main LLCP entry points
6**
7**
8**  Copyright (c) 2010, Broadcom Corp., All Rights Reserved.
9**  Broadcom Bluetooth Core. Proprietary and confidential.
10******************************************************************************/
11
12#include <string.h>
13#include "gki.h"
14#include "nfc_target.h"
15#include "bt_types.h"
16#include "llcp_api.h"
17#include "llcp_int.h"
18#include "llcp_defs.h"
19#include "nfc_int.h"
20
21#if (LLCP_DYNAMIC_MEMORY == FALSE)
22tLLCP_CB llcp_cb;
23#endif
24
25/*******************************************************************************
26**
27** Function         llcp_init
28**
29** Description      This function is called once at startup to initialize
30**                  all the LLCP structures
31**
32** Returns          void
33**
34*******************************************************************************/
35void llcp_init (void)
36{
37    UINT32 pool_count;
38
39    memset (&llcp_cb, 0, sizeof (tLLCP_CB));
40
41    llcp_cb.trace_level = LLCP_INITIAL_TRACE_LEVEL;
42
43    LLCP_TRACE_DEBUG0 ("LLCP - llcp_init ()");
44
45    llcp_cb.lcb.local_link_miu = (LLCP_MIU <= LLCP_MAX_MIU ? LLCP_MIU : LLCP_MAX_MIU);
46    llcp_cb.lcb.local_opt      = LLCP_OPT_VALUE;
47    llcp_cb.lcb.local_wt       = LLCP_WAITING_TIME;
48    llcp_cb.lcb.local_lto      = LLCP_LTO_VALUE;
49
50    llcp_cb.lcb.inact_timeout_init   = LLCP_INIT_INACTIVITY_TIMEOUT;
51    llcp_cb.lcb.inact_timeout_target = LLCP_TARGET_INACTIVITY_TIMEOUT;
52    llcp_cb.lcb.symm_delay           = LLCP_DELAY_RESP_TIME;
53    llcp_cb.lcb.data_link_timeout    = LLCP_DATA_LINK_CONNECTION_TOUT;
54    llcp_cb.lcb.delay_first_pdu_timeout = LLCP_DELAY_TIME_TO_SEND_FIRST_PDU;
55
56    llcp_cb.lcb.wks  = LLCP_WKS_MASK_LM;
57
58    /* total number of buffers for LLCP */
59    pool_count = GKI_poolcount (LLCP_POOL_ID);
60
61    /* number of buffers for receiving data */
62    llcp_cb.num_rx_buff = (pool_count * LLCP_RX_BUFF_RATIO) / 100;
63
64    /* rx congestion start/end threshold */
65    llcp_cb.overall_rx_congest_start = (UINT8) ((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_START) / 100);
66    llcp_cb.overall_rx_congest_end   = (UINT8) ((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_END) / 100);
67
68    /* max number of buffers for receiving data on logical data link */
69    llcp_cb.max_num_ll_rx_buff = (UINT8) ((llcp_cb.num_rx_buff * LLCP_LL_RX_BUFF_LIMIT) / 100);
70
71    LLCP_TRACE_DEBUG4 ("num_rx_buff = %d, rx_congest_start = %d, rx_congest_end = %d, max_num_ll_rx_buff = %d",
72                        llcp_cb.num_rx_buff, llcp_cb.overall_rx_congest_start,
73                        llcp_cb.overall_rx_congest_end, llcp_cb.max_num_ll_rx_buff);
74
75    /* max number of buffers for transmitting data */
76    llcp_cb.max_num_tx_buff    = (UINT8) (pool_count - llcp_cb.num_rx_buff);
77
78    /* max number of buffers for transmitting data on logical data link */
79    llcp_cb.max_num_ll_tx_buff = (UINT8) ((llcp_cb.max_num_tx_buff * LLCP_LL_TX_BUFF_LIMIT) / 100);
80
81    LLCP_TRACE_DEBUG2 ("max_num_tx_buff = %d, max_num_ll_tx_buff = %d",
82                        llcp_cb.max_num_tx_buff, llcp_cb.max_num_ll_tx_buff);
83
84    llcp_cb.ll_tx_uncongest_ntf_start_sap = LLCP_SAP_SDP + 1;
85
86    LLCP_RegisterServer (LLCP_SAP_SDP, LLCP_LINK_TYPE_DATA_LINK_CONNECTION, "urn:nfc:sn:sdp", llcp_sdp_proc_data);
87}
88
89/*******************************************************************************
90**
91** Function         llcp_cleanup
92**
93** Description      This function is called once at closing to clean up
94**
95** Returns          void
96**
97*******************************************************************************/
98void llcp_cleanup (void)
99{
100    UINT8 sap;
101    tLLCP_APP_CB *p_app_cb;
102
103    LLCP_TRACE_DEBUG0 ("LLCP - llcp_cleanup ()");
104
105    for (sap = LLCP_SAP_SDP; sap < LLCP_NUM_SAPS; sap++)
106    {
107        p_app_cb = llcp_util_get_app_cb (sap);
108
109        if (  (p_app_cb)
110            &&(p_app_cb->p_app_cback)  )
111        {
112            LLCP_Deregister (sap);
113        }
114    }
115
116    nfc_stop_quick_timer (&llcp_cb.lcb.inact_timer);
117    nfc_stop_quick_timer (&llcp_cb.lcb.timer);
118}
119
120/*******************************************************************************
121**
122** Function         llcp_process_timeout
123**
124** Description      This function is called when an LLCP-related timeout occurs
125**
126** Returns          void
127**
128*******************************************************************************/
129void llcp_process_timeout (TIMER_LIST_ENT *p_tle)
130{
131    UINT8 reason;
132
133    LLCP_TRACE_DEBUG1 ("llcp_process_timeout: event=%d", p_tle->event);
134
135    switch (p_tle->event)
136    {
137    case NFC_TTYPE_LLCP_LINK_MANAGER:
138        /* Link timeout or Symm timeout */
139        llcp_link_process_link_timeout ();
140        break;
141
142    case NFC_TTYPE_LLCP_LINK_INACT:
143        /* inactivity timeout */
144        llcp_link_deactivate (LLCP_LINK_LOCAL_INITIATED);
145        break;
146
147    case NFC_TTYPE_LLCP_DATA_LINK:
148        reason = LLCP_SAP_DISCONNECT_REASON_TIMEOUT;
149        llcp_dlsm_execute ((tLLCP_DLCB *) (p_tle->param), LLCP_DLC_EVENT_TIMEOUT, &reason);
150        break;
151
152    case NFC_TTYPE_LLCP_DELAY_FIRST_PDU:
153        llcp_link_check_send_data ();
154        break;
155
156    default:
157        break;
158    }
159}
160
161/*******************************************************************************
162**
163** Function         LLCP_SetTraceLevel
164**
165** Description      This function sets the trace level for LLCP.  If called with
166**                  a value of 0xFF, it simply returns the current trace level.
167**
168** Returns          The new or current trace level
169**
170*******************************************************************************/
171UINT8 LLCP_SetTraceLevel (UINT8 new_level)
172{
173    if (new_level != 0xFF)
174        llcp_cb.trace_level = new_level;
175
176    return (llcp_cb.trace_level);
177}
178