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lctr_int.h
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1 /*************************************************************************************************/
2 /*!
3  * \file
4  *
5  * \brief Internal link layer controller interface file.
6  *
7  * Copyright (c) 2013-2019 Arm Ltd. All Rights Reserved.
8  *
9  * Copyright (c) 2019-2020 Packetcraft, Inc.
10  *
11  * Licensed under the Apache License, Version 2.0 (the "License");
12  * you may not use this file except in compliance with the License.
13  * You may obtain a copy of the License at
14  *
15  * http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing, software
18  * distributed under the License is distributed on an "AS IS" BASIS,
19  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20  * See the License for the specific language governing permissions and
21  * limitations under the License.
22  */
23 /*************************************************************************************************/
24 
25 #ifndef LCTR_INT_H
26 #define LCTR_INT_H
27 
28 #include "lctr_api.h"
29 #include "lmgr_api.h"
30 #include "ll_defs.h"
31 #include "ll_math.h"
32 #include "util/crc32.h"
33 #include "pal_bb.h"
34 
35 #if (LL_ENABLE_TESTER)
36 #include "ll_tester_api.h"
37 #include "lctr_int_tester.h"
38 #endif
39 
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43 
44 /**************************************************************************************************
45  Macros
46 **************************************************************************************************/
47 
48 /*! \brief Minimum delay between connect indication and data channel in CONNECT_IND units. */
49 #define LCTR_DATA_CHAN_DLY 1 /* 1.25 ms */
50 
51 /*! \brief Minimum delay between auxiliary connect request and data channel using uncoded PHY in CONNECT_REQ units. */
52 #define LCTR_DATA_CHAN_DLY_AUX_UNCODED 2 /* 2.5 ms */
53 
54 /*! \brief Minimum delay between auxiliary connect request and data channel using coded PHY in CONNECT_REQ units. */
55 #define LCTR_DATA_CHAN_DLY_AUX_CODED 3 /* 3.75 ms */
56 
57 /*! \brief Convert connect indication ticks to scheduler ticks. */
58 #define LCTR_CONN_IND_TICKS(x) ((x) * (1250 / LL_BLE_US_PER_TICK))
59 
60 /*! \brief Convert connect indication ticks to milliseconds (no divide, rounds up). */
61 #define LCTR_CONN_IND_MS(x) ((x) + ((x) >> 2) + (((x) & 3) ? 1 : 0))
62 
63 /*! \brief Convert connect indication ticks to microseconds. */
64 #define LCTR_CONN_IND_US(x) ((x) * 1250)
65 
66 /*! \brief Convert connect indication timeout ticks to milliseconds. */
67 #define LCTR_CONN_IND_TO_MS(x) ((x) * 10)
68 
69 /*! \brief Convert microseconds to connection indication ticks. */
70 #define LCTR_US_TO_CONN_IND(x) LL_MATH_DIV_1250(x)
71 
72 /*! \brief Convert BLE protocol ticks to microseconds. */
73 #define LCTR_BLE_TO_US(x) ((x) * LL_BLE_US_PER_TICK)
74 
75 /*! \brief Convert periodic interval milliseconds to microseconds. */
76 #define LCTR_PER_INTER_TO_US(x) ((x) * 1250)
77 
78 /*! \brief Convert periodic interval microseconds to milliseconds. */
79 #define LCTR_PER_INTER_TO_MS(x) LL_MATH_DIV_1250(x)
80 
81 /*! \brief Convert periodic sync timeout unit to milliseconds. */
82 #define LCTR_PER_SYNC_TIMEOUT_TO_MS(x) ((x) * 10)
83 
84 /*! \brief Convert isochronous interval to microseconds. */
85 #define LCTR_ISO_INT_TO_US(x) ((x) * 1250)
86 
87 /*! \brief Fast termination supervision multiplier. */
88 #define LCTR_FAST_TERM_CNT 6
89 
90 /*! \brief Duration of a advertising packet in microseconds. */
91 #define LCTR_ADV_PKT_1M_US(len) ((LL_PREAMBLE_LEN_1M + LL_AA_LEN + LL_ADV_HDR_LEN + len + LL_CRC_LEN) << 3)
92 
93 /*! \brief Duration of a connection indication packet in microseconds. */
94 #define LCTR_CONN_IND_PKT_1M_US LCTR_ADV_PKT_1M_US(LL_CONN_IND_PDU_LEN)
95 
96 /*! \brief Extra area in ADVB buffer. */
97 #define LCTR_ADVB_BUF_EXTRA_SIZE 6
98 
99 /*! \brief Size for ADVB buffer allocation. */
100 #define LCTR_ADVB_BUF_SIZE (WSF_MAX(BB_FIXED_ADVB_PKT_LEN, LL_ADVB_MAX_LEN) + LCTR_ADVB_BUF_EXTRA_SIZE)
101 
102 /*! \brief RSSI offset of extra data in ADVB buffer. */
103 #define LCTR_ADVB_BUF_OFFSET_RSSI ((LCTR_ADVB_BUF_SIZE - LCTR_ADVB_BUF_EXTRA_SIZE) + 0)
104 
105 /*! \brief RPA offset of extra data in ADVB buffer. */
106 #define LCTR_ADVB_BUF_OFFSET_RX_RPA ((LCTR_ADVB_BUF_SIZE - LCTR_ADVB_BUF_EXTRA_SIZE) + 1)
107 
108 /*! \brief CRC offset of extra data in ADVB buffer. */
109 #define LCTR_ADVB_BUF_OFFSET_CRC ((LCTR_ADVB_BUF_SIZE - LCTR_ADVB_BUF_EXTRA_SIZE) + 2)
110 
111 /*! \brief LCTR Maximum span of scheduler elements. */
112 #define LCTR_SCH_MAX_SPAN ((BbGetBbTimerBoundaryUs() >> 1) + 1)
113 
114 /*! \brief LCTR Maximum value for sleep clock accuracy. */
115 #define LCTR_MAX_SCA 7
116 
117 /*! \brief Change supervision timeout value to us. */
118 #define LCTR_SUP_TIMEOUT_VAL_TO_US(x) (x * 10000)
119 
120 /**************************************************************************************************
121  Data Types
122 **************************************************************************************************/
123 
124 /*! \brief Call signature of a reset handler. */
125 typedef void (*LctrResetHdlr_t)(void);
126 
127 /*! \brief Call signature of a message dispatch handler. */
128 typedef void (*LctrMsgDisp_t)(lctrMsgHdr_t *pMsg);
129 
130 /*! \brief Call signature of a message dispatch handler. */
131 typedef void (*LctrEvtHdlr_t)(void);
132 
133 /*! \brief Reservation manager callback signature. */
134 typedef void (*LctrRmCback_t)(uint32_t rsvnOffs[], uint32_t refTime);
135 
136 /*! \brief Channel class update handler call signature. */
137 typedef uint8_t (*lctrChClassHdlr_t)(uint64_t chanMap);
138 
139 /**************************************************************************************************
140  Globals
141 **************************************************************************************************/
142 
143 extern LctrResetHdlr_t lctrResetHdlrTbl[LCTR_DISP_TOTAL];
144 extern LctrMsgDisp_t lctrMsgDispTbl[LCTR_DISP_TOTAL];
145 extern LctrEvtHdlr_t lctrEventHdlrTbl[LCTR_EVENT_TOTAL];
146 extern lctrMsgHdr_t *pLctrMsg;
147 extern const uint16_t scaPpmTbl[];
148 extern bool_t lctrResetEnabled;
149 
150 /**************************************************************************************************
151  Functions
152 **************************************************************************************************/
153 
154 /* Initialization. */
155 void lctrRegisterChClassHandler(lctrChClassHdlr_t cback);
156 
157 /* Helper routines. */
158 uint32_t lctrComputeAccessAddr(void);
159 uint32_t lctrComputeSeedAccessAddr(void);
160 uint8_t lctrComputeHopInc(void);
161 uint8_t lctrPeriodicSelectNextChannel(lmgrChanParam_t *pChanParam, uint16_t eventCounter);
162 void lctrPeriodicBuildRemapTable(lmgrChanParam_t *pChanParam);
163 uint16_t lctrCalcTotalAccuracy(uint8_t mstScaIdx);
164 uint32_t lctrComputeCrcInit(void);
165 uint32_t lctrCalcWindowWideningUsec(uint32_t unsyncTimeUsec, uint32_t caPpm);
166 
167 /* Host events */
168 void lctrNotifyHostHwErrInd(uint8_t code);
169 void lctrNotifyHostConnectInd(uint16_t handle, uint8_t role, lctrConnInd_t *pConnInd,
170  uint8_t peerIdAddrType, uint64_t peerIdAddr, uint64_t peerRpa,
171  uint64_t localRpa, uint8_t status, uint8_t usedChSel);
172 
173 /* State machine */
174 void lctrMstScanExecuteSm(uint8_t event);
175 void lctrMstInitExecuteSm(uint8_t event);
176 void lctrSlvAdvExecuteSm(uint8_t event);
177 
178 /*************************************************************************************************/
179 /*!
180  * \brief Calculate DID.
181  *
182  * \param pBuf Data buffer.
183  * \param len Length of data buffer.
184  *
185  * \return DID value.
186  */
187 /*************************************************************************************************/
188 static inline uint16_t lctrCalcDID(const uint8_t *pBuf, uint16_t len)
189 {
190  return CalcCrc32(LlMathRandNum(), len, pBuf);
191 }
192 
193 /*************************************************************************************************/
194 /*!
195  * \brief Convert PHYS bit to PHY.
196  *
197  * \param physBit PHYS bit.
198  *
199  * \return PHY.
200  */
201 /*************************************************************************************************/
202 static inline PalBbPhy_t lctrPhysBitToPhy(uint8_t physBit)
203 {
204  switch (physBit)
205  {
206  default:
207  case LL_PHYS_LE_1M_BIT:
208  return BB_PHY_BLE_1M;
209  case LL_PHYS_LE_2M_BIT:
210  return BB_PHY_BLE_2M;
211  case LL_PHYS_LE_CODED_BIT:
212  return BB_PHY_BLE_CODED;
213  }
214 }
215 
216 /*************************************************************************************************/
217 /*!
218  * \brief Convert PHY to PHYS bit.
219  *
220  * \param phy PHY.
221  *
222  * \return PHYS bit.
223  */
224 /*************************************************************************************************/
225 static inline uint8_t lctrPhyToPhysBit(uint8_t phy)
226 {
227  switch (phy)
228  {
229  default:
230  case BB_PHY_BLE_1M:
231  return LL_PHYS_LE_1M_BIT;
232  case BB_PHY_BLE_2M:
233  return LL_PHYS_LE_2M_BIT;
234  case BB_PHY_BLE_CODED:
235  return LL_PHYS_LE_CODED_BIT;
236  }
237 }
238 
239 #ifdef __cplusplus
240 };
241 #endif
242 
243 #endif /* LCTR_INT_H */
LlMathRandNum
uint32_t LlMathRandNum(void)
Generate random number.
LCTR_EVENT_TOTAL
Definition: lctr_api.h:93
BB_PHY_BLE_2M
Definition: pal_bb.h:68
lctrPhysBitToPhy
static PalBbPhy_t lctrPhysBitToPhy(uint8_t physBit)
Convert PHYS bit to PHY.
Definition: lctr_int.h:202
CalcCrc32
uint32_t CalcCrc32(uint32_t crcInit, uint32_t len, const uint8_t *pBuf)
Calculate the CRC-32 of the given buffer.
lctrConnInd_t
Connect request PDU.
Definition: lctr_api.h:131
lctrCalcDID
static uint16_t lctrCalcDID(const uint8_t *pBuf, uint16_t len)
Calculate DID.
Definition: lctr_int.h:188
LCTR_DISP_TOTAL
Definition: lctr_api.h:66
crc32.h
CRC-32 utilities.
lctr_api.h
Link layer controller common interface file.
BB_PHY_BLE_1M
Definition: pal_bb.h:67
lmgrChanParam_t
Channel parameters.
Definition: lmgr_api.h:137
LL_PHYS_LE_2M_BIT
Definition: ll_api.h:532
LctrResetHdlr_t
void(* LctrResetHdlr_t)(void)
Call signature of a reset handler.
Definition: lctr_int.h:125
lctrMsgHdr_t
Common message structure passed to event handler.
Definition: lctr_api.h:109
LctrMsgDisp_t
void(* LctrMsgDisp_t)(lctrMsgHdr_t *pMsg)
Call signature of a message dispatch handler.
Definition: lctr_int.h:128
lmgr_api.h
Link layer manager common interface file.
LctrRmCback_t
void(* LctrRmCback_t)(uint32_t rsvnOffs[], uint32_t refTime)
Reservation manager callback signature.
Definition: lctr_int.h:134
ll_defs.h
Link layer constant definitions.
lctrChClassHdlr_t
uint8_t(* lctrChClassHdlr_t)(uint64_t chanMap)
Channel class update handler call signature.
Definition: lctr_int.h:137
PalBbPhy_t
PalBbPhy_t
PHY types.
Definition: pal_bb.h:65
LctrEvtHdlr_t
void(* LctrEvtHdlr_t)(void)
Call signature of a message dispatch handler.
Definition: lctr_int.h:131
LL_PHYS_LE_CODED_BIT
Definition: ll_api.h:533
pal_bb.h
Baseband interface file.
BB_PHY_BLE_CODED
Definition: pal_bb.h:69
LL_PHYS_LE_1M_BIT
Definition: ll_api.h:531
ll_math.h
Link Layer math utilities.
lctrPhyToPhysBit
static uint8_t lctrPhyToPhysBit(uint8_t phy)
Convert PHY to PHYS bit.
Definition: lctr_int.h:225
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