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Linux/include/net/caif/cfctrl.h

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  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_ */
140 

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