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kernel/linux-imx6_3.14.28/include/net/caif/cfctrl.h 3.43 KB
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  /*
   * Copyright (C) ST-Ericsson AB 2010
   * Author:	Sjur Brendeland
   * 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);
  
  struct cflayer *cfctrl_create(void);
  struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
  int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
  void cfctrl_remove(struct cflayer *layr);
  
  #endif				/* CFCTRL_H_ */