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 | |