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
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.