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cfctrl.h
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1 /*
2  * Copyright (C) ST-Ericsson AB 2010
3  * Author: Sjur Brendeland/[email protected]
4  * License terms: GNU General Public License (GPL) version 2
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_ */
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