caif: Bugfix - use standard Linux lists
[linux-2.6.git] / include / net / caif / cfctrl.h
1 /*
2  * Copyright (C) ST-Ericsson AB 2010
3  * Author:      Sjur Brendeland/sjur.brandeland@stericsson.com
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 void cfctrl_sleep_req(struct cflayer *cfctrl);
125 void cfctrl_wake_req(struct cflayer *cfctrl);
126 void cfctrl_getstartreason_req(struct cflayer *cfctrl);
127 struct cflayer *cfctrl_create(void);
128 void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn);
129 void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up);
130 struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
131 bool cfctrl_req_eq(struct cfctrl_request_info *r1,
132                    struct cfctrl_request_info *r2);
133 void cfctrl_insert_req(struct cfctrl *ctrl,
134                               struct cfctrl_request_info *req);
135 struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
136                                               struct cfctrl_request_info *req);
137 void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
138
139 #endif                          /* CFCTRL_H_ */