/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*/
#ifndef NIC_H
#define NIC_H
typedef enum {
DISABLE = 0,
ENABLE,
FORCE
} irq_action_t;
typedef enum duplex {
HALF_DUPLEX = 1,
FULL_DUPLEX
} duplex_t;
/*
* Structure returned from eth_probe and passed to other driver
* functions.
*/
struct nic {
struct nic_operations *nic_op;
int flags; /* driver specific flags */
unsigned char *node_addr;
unsigned char *packet;
unsigned int packetlen;
unsigned int ioaddr;
unsigned char irqno;
unsigned int mbps;
duplex_t duplex;
void *priv_data; /* driver can hang private data here */
};
struct nic_operations {
int ( *connect ) ( struct nic * );
int ( *poll ) ( struct nic *, int retrieve );
void ( *transmit ) ( struct nic *, const char *,
unsigned int, unsigned int, const char * );
void ( *irq ) ( struct nic *, irq_action_t );
void ( *disable ) ( struct nic * );
};
/*
* Function prototypes
*
*/
struct dev;
extern struct nic * nic_device ( struct dev * dev );
extern int dummy_connect ( struct nic *nic );
extern void dummy_irq ( struct nic *nic, irq_action_t irq_action );
/*
* Functions that implicitly operate on the current boot device
*
* "nic" always points to &dev.nic
*/
extern struct nic *nic;
static inline int eth_connect ( void ) {
return nic->nic_op->connect ( nic );
}
static inline int eth_poll ( int retrieve ) {
return nic->nic_op->poll ( nic, retrieve );
}
static inline void eth_transmit ( const char *dest, unsigned int type,
unsigned int size, const void *packet ) {
nic->nic_op->transmit ( nic, dest, type, size, packet );
}
static inline void eth_irq ( irq_action_t action ) {
nic->nic_op->irq ( nic, action );
}
/* Should be using disable() rather than eth_disable() */
static inline void eth_disable ( void ) __attribute__ (( deprecated ));
static inline void eth_disable ( void ) {
nic->nic_op->disable ( nic );
}
/* dev.h needs declarations from nic.h */
#include "dev.h"
/* to get global "dev" */
#include "main.h"
#endif /* NIC_H */
