1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) ST-Ericsson AB 2010 4 * Author: Sjur Brendeland 5 */ 6 7 #ifndef CFCTRL_H_ 8 #define CFCTRL_H_ 9 #include <net/caif/caif_layer.h> 10 #include <net/caif/cfsrvl.h> 11 12 /* CAIF Control packet commands */ 13 enum cfctrl_cmd { 14 CFCTRL_CMD_LINK_SETUP = 0, 15 CFCTRL_CMD_LINK_DESTROY = 1, 16 CFCTRL_CMD_LINK_ERR = 2, 17 CFCTRL_CMD_ENUM = 3, 18 CFCTRL_CMD_SLEEP = 4, 19 CFCTRL_CMD_WAKE = 5, 20 CFCTRL_CMD_LINK_RECONF = 6, 21 CFCTRL_CMD_START_REASON = 7, 22 CFCTRL_CMD_RADIO_SET = 8, 23 CFCTRL_CMD_MODEM_SET = 9, 24 CFCTRL_CMD_MASK = 0xf 25 }; 26 27 /* Channel types */ 28 enum cfctrl_srv { 29 CFCTRL_SRV_DECM = 0, 30 CFCTRL_SRV_VEI = 1, 31 CFCTRL_SRV_VIDEO = 2, 32 CFCTRL_SRV_DBG = 3, 33 CFCTRL_SRV_DATAGRAM = 4, 34 CFCTRL_SRV_RFM = 5, 35 CFCTRL_SRV_UTIL = 6, 36 CFCTRL_SRV_MASK = 0xf 37 }; 38 39 #define CFCTRL_RSP_BIT 0x20 40 #define CFCTRL_ERR_BIT 0x10 41 42 struct cfctrl_rsp { 43 void (*linksetup_rsp)(struct cflayer *layer, u8 linkid, 44 enum cfctrl_srv serv, u8 phyid, 45 struct cflayer *adapt_layer); 46 void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid); 47 void (*linkerror_ind)(void); 48 void (*enum_rsp)(void); 49 void (*sleep_rsp)(void); 50 void (*wake_rsp)(void); 51 void (*restart_rsp)(void); 52 void (*radioset_rsp)(void); 53 void (*reject_rsp)(struct cflayer *layer, u8 linkid, 54 struct cflayer *client_layer); 55 }; 56 57 /* Link Setup Parameters for CAIF-Links. */ 58 struct cfctrl_link_param { 59 enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */ 60 u8 priority; /* (P4,P0) Priority of the channel */ 61 u8 phyid; /* (U2-U0) Physical interface to connect */ 62 u8 endpoint; /* (E1,E0) Endpoint for data channels */ 63 u8 chtype; /* (H1,H0) Channel-Type, applies to 64 * VEI, DEBUG */ 65 union { 66 struct { 67 u8 connid; /* (D7,D0) Video LinkId */ 68 } video; 69 70 struct { 71 u32 connid; /* (N31,Ngit0) Connection ID used 72 * for Datagram */ 73 } datagram; 74 75 struct { 76 u32 connid; /* Connection ID used for RFM */ 77 char volume[20]; /* Volume to mount for RFM */ 78 } rfm; /* Configuration for RFM */ 79 80 struct { 81 u16 fifosize_kb; /* Psock FIFO size in KB */ 82 u16 fifosize_bufs; /* Psock # signal buffers */ 83 char name[16]; /* Name of the PSOCK service */ 84 u8 params[255]; /* Link setup Parameters> */ 85 u16 paramlen; /* Length of Link Setup 86 * Parameters */ 87 } utility; /* Configuration for Utility Links (Psock) */ 88 } u; 89 }; 90 91 /* This structure is used internally in CFCTRL */ 92 struct cfctrl_request_info { 93 int sequence_no; 94 enum cfctrl_cmd cmd; 95 u8 channel_id; 96 struct cfctrl_link_param param; 97 struct cflayer *client_layer; 98 struct list_head list; 99 }; 100 101 struct cfctrl { 102 struct cfsrvl serv; 103 struct cfctrl_rsp res; 104 atomic_t req_seq_no; 105 atomic_t rsp_seq_no; 106 struct list_head list; 107 /* Protects from simultaneous access to first_req list */ 108 spinlock_t info_list_lock; 109 #ifndef CAIF_NO_LOOP 110 u8 loop_linkid; 111 int loop_linkused[256]; 112 /* Protects simultaneous access to loop_linkid and loop_linkused */ 113 spinlock_t loop_linkid_lock; 114 #endif 115 116 }; 117 118 void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid); 119 int cfctrl_linkup_request(struct cflayer *cfctrl, 120 struct cfctrl_link_param *param, 121 struct cflayer *user_layer); 122 int cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid, 123 struct cflayer *client); 124 125 struct cflayer *cfctrl_create(void); 126 struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer); 127 int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer); 128 void cfctrl_remove(struct cflayer *layr); 129 130 #endif /* CFCTRL_H_ */ 131