ref: b7af62b250e5dff30320a181ca9d53ab5a7c276d
dir: /os/boot/mpc/etherif.h/
/*
* All the goo for PC ethernet cards.
*/
typedef struct Card Card;
typedef struct Type Type;
typedef struct Ctlr Ctlr;
/*
* Hardware interface.
*/
struct Card {
ISAConf;
int (*reset)(Ctlr*);
void (*attach)(Ctlr*);
void *(*read)(Ctlr*, void*, ulong, ulong);
void *(*write)(Ctlr*, ulong, void*, ulong);
void (*receive)(Ctlr*);
void (*transmit)(Ctlr*);
void (*intr)(Ureg*, void*);
void (*overflow)(Ctlr*);
uchar bit16; /* true if a 16 bit interface */
uchar ram; /* true if card has shared memory */
ulong dp8390; /* I/O address of 8390 (if any) */
ulong data; /* I/O data port if no shared memory */
uchar nxtpkt; /* software bndry */
uchar tstart; /* 8390 ring addresses */
uchar pstart;
uchar pstop;
uchar dummyrr; /* do dummy remote read */
};
/*
* Software controller.
*/
struct Ctlr {
Card card; /* hardware info */
int ctlrno;
int present;
Queue* iq;
Queue* oq;
int inpackets;
int outpackets;
int crcs; /* input crc errors */
int oerrs; /* output errors */
int frames; /* framing errors */
int overflows; /* packet overflows */
int buffs; /* buffering errors */
};
extern int sccethreset(Ctlr*);
extern int etheriq(Ctlr*, Block*, int);