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/*
* Copyright (C) ST-Ericsson AB 2010
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef CFCNFG_H_
#define CFCNFG_H_
#include <linux/spinlock.h>
#include <linux/netdevice.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfctrl.h>
struct cfcnfg;
/**
* enum cfcnfg_phy_type - Types of physical layers defined in CAIF Stack
*
* @CFPHYTYPE_FRAG: Fragmented frames physical interface.
* @CFPHYTYPE_CAIF: Generic CAIF physical interface
*/
enum cfcnfg_phy_type {
CFPHYTYPE_FRAG = 1,
CFPHYTYPE_CAIF,
CFPHYTYPE_MAX
};
/**
* enum cfcnfg_phy_preference - Physical preference HW Abstraction
*
* @CFPHYPREF_UNSPECIFIED: Default physical interface
*
* @CFPHYPREF_LOW_LAT: Default physical interface for low-latency
* traffic
* @CFPHYPREF_HIGH_BW: Default physical interface for high-bandwidth
* traffic
* @CFPHYPREF_LOOP: TEST only Loopback interface simulating modem
* responses.
*
*/
enum cfcnfg_phy_preference {
CFPHYPREF_UNSPECIFIED,
CFPHYPREF_LOW_LAT,
CFPHYPREF_HIGH_BW,
CFPHYPREF_LOOP
};
/**
* cfcnfg_create() - Create the CAIF configuration object.
*/
struct cfcnfg *cfcnfg_create(void);
/**
* cfcnfg_remove() - Remove the CFCNFG object
* @cfg: config object
*/
void cfcnfg_remove(struct cfcnfg *cfg);
/**
* cfcnfg_add_phy_layer() - Adds a physical layer to the CAIF stack.
* @cnfg: Pointer to a CAIF configuration object, created by
* cfcnfg_create().
* @phy_type: Specifies the type of physical interface, e.g.
* CFPHYTYPE_FRAG.
* @dev: Pointer to link layer device
* @phy_layer: Specify the physical layer. The transmit function
* MUST be set in the structure.
* @phyid: The assigned physical ID for this layer, used in
* cfcnfg_add_adapt_layer to specify PHY for the link.
* @pref: The phy (link layer) preference.
* @fcs: Specify if checksum is used in CAIF Framing Layer.
* @stx: Specify if Start Of Frame eXtention is used.
*/
void
cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
struct net_device *dev, struct cflayer *phy_layer,
u16 *phyid, enum cfcnfg_phy_preference pref,
bool fcs, bool stx);
/**
* cfcnfg_del_phy_layer - Deletes an phy layer from the CAIF stack.
*
* @cnfg: Pointer to a CAIF configuration object, created by
* cfcnfg_create().
* @phy_layer: Adaptation layer to be removed.
*/
int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer);
/**
* cfcnfg_disconn_adapt_layer - Disconnects an adaptation layer.
*
* @cnfg: Pointer to a CAIF configuration object, created by
* cfcnfg_create().
* @adap_layer: Adaptation layer to be removed.
*/
int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg,
struct cflayer *adap_layer);
/**
* cfcnfg_release_adap_layer - Used by client to release the adaptation layer.
*
* @adap_layer: Adaptation layer.
*/
void cfcnfg_release_adap_layer(struct cflayer *adap_layer);
/**
* cfcnfg_add_adaptation_layer - Add an adaptation layer to the CAIF stack.
*
* The adaptation Layer is where the interface to application or higher-level
* driver functionality is implemented.
*
* @cnfg: Pointer to a CAIF configuration object, created by
* cfcnfg_create().
* @param: Link setup parameters.
* @adap_layer: Specify the adaptation layer; the receive and
* flow-control functions MUST be set in the structure.
* @ifindex: Link layer interface index used for this connection.
* @proto_head: Protocol head-space needed by CAIF protocol,
* excluding link layer.
* @proto_tail: Protocol tail-space needed by CAIF protocol,
* excluding link layer.
*/
int cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
struct cfctrl_link_param *param,
struct cflayer *adap_layer,
int *ifindex,
int *proto_head,
int *proto_tail);
/**
* cfcnfg_get_phyid() - Get physical ID, given type.
* Returns one of the physical interfaces matching the given type.
* Zero if no match is found.
* @cnfg: Configuration object
* @phy_pref: Caif Link Layer preference
*/
struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
enum cfcnfg_phy_preference phy_pref);
/**
* cfcnfg_get_id_from_ifi() - Get the Physical Identifier of ifindex,
* it matches caif physical id with the kernel interface id.
* @cnfg: Configuration object
* @ifi: ifindex obtained from socket.c bindtodevice.
*/
int cfcnfg_get_id_from_ifi(struct cfcnfg *cnfg, int ifi);
#endif /* CFCNFG_H_ */
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