1 /* 2 * Copyright (c) 2019 Alexander Wachter 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_SUBSYS_NET_CAN_ISOTP_INTERNAL_H_ 8 #define ZEPHYR_SUBSYS_NET_CAN_ISOTP_INTERNAL_H_ 9 10 11 #include <canbus/isotp.h> 12 #include <sys/slist.h> 13 14 /* 15 * Abbreviations 16 * BS Block Size 17 * CAN_DL CAN LL data size 18 * CF Consecutive Frame 19 * CTS Continue to send 20 * DLC Data length code 21 * FC Flow Control 22 * FF First Frame 23 * SF Single Frame 24 * FS Flow Status 25 * AE Adders Extension 26 * SN Sequence Number 27 * ST Separation time 28 * PCI Process Control Information 29 */ 30 31 /* This is for future use when we have CAN-FD */ 32 #ifdef ISOTP_USE_CAN_FD 33 /* #define ISOTP_CAN_DL CONFIG_ISOTP_TX_DL* */ 34 #define ISOTP_CAN_DL 8 35 #else 36 #define ISOTP_CAN_DL 8 37 #endif/*ISOTP_USE_CAN_FD*/ 38 39 /* Protocol control information*/ 40 #define ISOTP_PCI_SF 0x00 /* Single frame*/ 41 #define ISOTP_PCI_FF 0x01 /* First frame */ 42 #define ISOTP_PCI_CF 0x02 /* Consecutive frame */ 43 #define ISOTP_PCI_FC 0x03 /* Flow control frame */ 44 45 #define ISOTP_PCI_TYPE_BYTE 0 46 #define ISOTP_PCI_TYPE_POS 4 47 #define ISOTP_PCI_TYPE_MASK 0xF0 48 #define ISOTP_PCI_TYPE_SF (ISOTP_PCI_SF << ISOTP_PCI_TYPE_POS) 49 #define ISOTP_PCI_TYPE_FF (ISOTP_PCI_FF << ISOTP_PCI_TYPE_POS) 50 #define ISOTP_PCI_TYPE_CF (ISOTP_PCI_CF << ISOTP_PCI_TYPE_POS) 51 #define ISOTP_PCI_TYPE_FC (ISOTP_PCI_FC << ISOTP_PCI_TYPE_POS) 52 53 #define ISOTP_PCI_SF_DL_MASK 0x0F 54 55 #define ISOTP_PCI_FF_DL_UPPER_BYTE 0 56 #define ISOTP_PCI_FF_DL_UPPER_MASK 0x0F 57 #define ISOTP_PCI_FF_DL_LOWER_BYTE 1 58 59 #define ISOTP_PCI_FS_BYTE 0 60 #define ISOTP_PCI_FS_MASK 0x0F 61 #define ISOTP_PCI_BS_BYTE 1 62 #define ISOTP_PCI_ST_MIN_BYTE 2 63 64 #define ISOTP_PCI_FS_CTS 0x0 65 #define ISOTP_PCI_FS_WAIT 0x1 66 #define ISOTP_PCI_FS_OVFLW 0x2 67 68 #define ISOTP_PCI_SN_MASK 0x0F 69 70 #define ISOTP_FF_DL_MIN (ISOTP_CAN_DL) 71 72 #define ISOTP_STMIN_MAX 0xFA 73 #define ISOTP_STMIN_MS_MAX 0x7F 74 #define ISOTP_STMIN_US_BEGIN 0xF1 75 #define ISOTP_STMIN_US_END 0xF9 76 77 #define ISOTP_WFT_FIRST 0xFF 78 79 #define ISOTP_BS (CONFIG_ISOTP_BS_TIMEOUT) 80 #define ISOTP_A (CONFIG_ISOTP_A_TIMEOUT) 81 #define ISOTP_CR (CONFIG_ISOTP_CR_TIMEOUT) 82 83 /* Just before the sender would time out*/ 84 #define ISOTP_ALLOC_TIMEOUT (CONFIG_ISOTP_A_TIMEOUT - 100) 85 86 #ifdef __cplusplus 87 extern "C" { 88 #endif 89 90 enum isotp_rx_state { 91 ISOTP_RX_STATE_WAIT_FF_SF, 92 ISOTP_RX_STATE_PROCESS_SF, 93 ISOTP_RX_STATE_PROCESS_FF, 94 ISOTP_RX_STATE_TRY_ALLOC, 95 ISOTP_RX_STATE_SEND_FC, 96 ISOTP_RX_STATE_WAIT_CF, 97 ISOTP_RX_STATE_SEND_WAIT, 98 ISOTP_RX_STATE_ERR, 99 ISOTP_RX_STATE_RECYCLE, 100 ISOTP_RX_STATE_UNBOUND 101 }; 102 103 enum isotp_tx_state { 104 ISOTP_TX_STATE_RESET, 105 ISOTP_TX_SEND_SF, 106 ISOTP_TX_SEND_FF, 107 ISOTP_TX_WAIT_FC, 108 ISOTP_TX_SEND_CF, 109 ISOTP_TX_WAIT_ST, 110 ISOTP_TX_WAIT_BACKLOG, 111 ISOTP_TX_WAIT_FIN, 112 ISOTP_TX_ERR 113 }; 114 115 struct isotp_global_ctx { 116 sys_slist_t alloc_list; 117 sys_slist_t ff_sf_alloc_list; 118 }; 119 120 #ifdef __cplusplus 121 } 122 #endif 123 124 #endif /* ZEPHYR_SUBSYS_NET_CAN_ISOTP_INTERNAL_H_ */ 125
