1/*
2 * Copyright (C) ST-Ericsson AB 2010
3 * Author:	Sjur Brendeland
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 */
13enum 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 */
28enum 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
42struct 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. */
58struct 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 */
92struct 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
101struct 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
118void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid);
119int cfctrl_linkup_request(struct cflayer *cfctrl,
120			   struct cfctrl_link_param *param,
121			   struct cflayer *user_layer);
122int  cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
123			 struct cflayer *client);
124
125struct cflayer *cfctrl_create(void);
126struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
127int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
128void cfctrl_remove(struct cflayer *layr);
129
130#endif				/* CFCTRL_H_ */
131