aboutsummaryrefslogtreecommitdiffstats
path: root/include/net/caif/cfctrl.h
blob: 9402543fc20d2dc65cec9f0100397aee71b4dbf9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
 * Copyright (C) ST-Ericsson AB 2010
 * Author:	Sjur Brendeland/sjur.brandeland@stericsson.com
 * License terms: GNU General Public License (GPL) version 2
 */

#ifndef CFCTRL_H_
#define CFCTRL_H_
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>

/* CAIF Control packet commands */
enum cfctrl_cmd {
	CFCTRL_CMD_LINK_SETUP = 0,
	CFCTRL_CMD_LINK_DESTROY = 1,
	CFCTRL_CMD_LINK_ERR = 2,
	CFCTRL_CMD_ENUM = 3,
	CFCTRL_CMD_SLEEP = 4,
	CFCTRL_CMD_WAKE = 5,
	CFCTRL_CMD_LINK_RECONF = 6,
	CFCTRL_CMD_START_REASON = 7,
	CFCTRL_CMD_RADIO_SET = 8,
	CFCTRL_CMD_MODEM_SET = 9,
	CFCTRL_CMD_MASK = 0xf
};

/* Channel types */
enum cfctrl_srv {
	CFCTRL_SRV_DECM = 0,
	CFCTRL_SRV_VEI = 1,
	CFCTRL_SRV_VIDEO = 2,
	CFCTRL_SRV_DBG = 3,
	CFCTRL_SRV_DATAGRAM = 4,
	CFCTRL_SRV_RFM = 5,
	CFCTRL_SRV_UTIL = 6,
	CFCTRL_SRV_MASK = 0xf
};

#define CFCTRL_RSP_BIT 0x20
#define CFCTRL_ERR_BIT 0x10

struct cfctrl_rsp {
	void (*linksetup_rsp)(struct cflayer *layer, u8 linkid,
			      enum cfctrl_srv serv, u8 phyid,
			      struct cflayer *adapt_layer);
	void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid);
	void (*linkerror_ind)(void);
	void (*enum_rsp)(void);
	void (*sleep_rsp)(void);
	void (*wake_rsp)(void);
	void (*restart_rsp)(void);
	void (*radioset_rsp)(void);
	void (*reject_rsp)(struct cflayer *layer, u8 linkid,
				struct cflayer *client_layer);;
};

/* Link Setup Parameters for CAIF-Links. */
struct cfctrl_link_param {
	enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */
	u8 priority;		  /* (P4,P0) Priority of the channel */
	u8 phyid;		  /* (U2-U0) Physical interface to connect */
	u8 endpoint;		  /* (E1,E0) Endpoint for data channels */
	u8 chtype;		  /* (H1,H0) Channel-Type, applies to
				   *            VEI, DEBUG */
	union {
		struct {
			u8 connid;	/*  (D7,D0) Video LinkId */
		} video;

		struct {
			u32 connid;	/* (N31,Ngit0) Connection ID used
					 *  for Datagram */
		} datagram;

		struct {
			u32 connid;	/* Connection ID used for RFM */
			char volume[20];	/* Volume to mount for RFM */
		} rfm;		/* Configuration for RFM */

		struct {
			u16 fifosize_kb;	/* Psock FIFO size in KB */
			u16 fifosize_bufs;	/* Psock # signal buffers */
			char name[16];	/* Name of the PSOCK service */
			u8 params[255];	/* Link setup Parameters> */
			u16 paramlen;	/* Length of Link Setup
						 *   Parameters */
		} utility;	/* Configuration for Utility Links (Psock) */
	} u;
};

/* This structure is used internally in CFCTRL */
struct cfctrl_request_info {
	int sequence_no;
	enum cfctrl_cmd cmd;
	u8 channel_id;
	struct cfctrl_link_param param;
	struct cflayer *client_layer;
	struct list_head list;
};

struct cfctrl {
	struct cfsrvl serv;
	struct cfctrl_rsp res;
	atomic_t req_seq_no;
	atomic_t rsp_seq_no;
	struct list_head list;
	/* Protects from simultaneous access to first_req list */
	spinlock_t info_list_lock;
#ifndef CAIF_NO_LOOP
	u8 loop_linkid;
	int loop_linkused[256];
	/* Protects simultaneous access to loop_linkid and loop_linkused */
	spinlock_t loop_linkid_lock;
#endif

};

void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid);
int cfctrl_linkup_request(struct cflayer *cfctrl,
			   struct cfctrl_link_param *param,
			   struct cflayer *user_layer);
int  cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
			 struct cflayer *client);
void cfctrl_sleep_req(struct cflayer *cfctrl);
void cfctrl_wake_req(struct cflayer *cfctrl);
void cfctrl_getstartreason_req(struct cflayer *cfctrl);
struct cflayer *cfctrl_create(void);
void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn);
void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up);
struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
bool cfctrl_req_eq(struct cfctrl_request_info *r1,
		   struct cfctrl_request_info *r2);
void cfctrl_insert_req(struct cfctrl *ctrl,
			      struct cfctrl_request_info *req);
struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
					      struct cfctrl_request_info *req);
void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);

#endif				/* CFCTRL_H_ */