1992/0904/pc/io.h (diff list | history)

1992/0904/sys/src/9/pc/io.h:1,26 – 1992/0922/sys/src/9/pc/io.h:1,120 (short | long | prev | next)
Add generic ethernet structures. rsc Fri Mar 4 12:44:25 2005
1991/0703		/*
1991/0731		* programmable interrupt vectors (for the 8259's)
1991/0703		*/
1991/0704		enum {
1991/1112		Bptvec= 3, /* breakpoints */
1991/0906		Mathemuvec= 7, /* math coprocessor emulation interrupt */ Mathovervec= 9, /* math coprocessor overrun interrupt */
1991/0912		Matherr1vec= 16, /* math coprocessor error interrupt */
1991/0710		Faultvec= 14, /* page fault */
1991/0905
1991/0904		Int0vec= 24, /* first 8259 */
1991/0731		Clockvec= Int0vec+0, /* clock interrupts */ Kbdvec= Int0vec+1, /* keyboard interrupts */
1991/0810		Uart1vec= Int0vec+3, /* modem line */
1991/0811		Uart0vec= Int0vec+4, /* serial line */
1991/0731		Floppyvec= Int0vec+6, /* floppy interrupts */
1991/1127		Parallelvec= Int0vec+7, /* parallel port interrupts */
1992/0904		Int1vec= Int0vec+8, Ethervec= Int0vec+10, /* ethernet interrupt */ Mousevec= Int0vec+12, /* mouse interrupt */ Matherr2vec= Int0vec+13, /* math coprocessor */ Hardvec= Int0vec+14, /* hard disk */
1991/0910		Syscallvec= 64,
1991/0704		};
1992/0922		typedef struct EtherHw EtherHw; typedef struct EtherBuf EtherBuf; typedef struct EtherType EtherType; typedef struct EtherCtlr EtherCtlr; struct EtherHw { int (*reset)(EtherCtlr*); void (*init)(EtherCtlr*); void (*mode)(EtherCtlr*, int); void (*online)(EtherCtlr*, int); void (*receive)(EtherCtlr*); void (*transmit)(EtherCtlr*); void (*intr)(EtherCtlr*); void (*tweak)(EtherCtlr*); int addr; /* interface address */ uchar *ram; /* interface shared memory address */ int bt16; /* true if a 16 bit interface */ int irq; /* interrupt level */ int size; uchar tstart; uchar pstart; uchar pstop; }; struct EtherBuf { uchar owner; uchar busy; ushort len; uchar pkt[sizeof(Etherpkt)]; }; enum { Host = 0, /* buffer owned by host */ Interface = 1, /* buffer owned by interface */ NType = 9, /* types/interface */ }; /* * one per ethernet packet type */ struct EtherType { QLock; Netprot; /* stat info */ int type; /* ethernet type */ int prom; /* promiscuous mode */ Queue *q; int inuse; EtherCtlr *ctlr; }; /* * per ethernet */ struct EtherCtlr { QLock; EtherHw *hw; int present; ushort nrb; /* number of software receive buffers */ ushort ntb; /* number of software transmit buffers */ EtherBuf *rb; /* software receive buffers */ EtherBuf *tb; /* software transmit buffers */ uchar ea[6]; /* ethernet address */ uchar ba[6]; /* broadcast address */ Rendez rr; /* rendezvous for a receive buffer */ ushort rh; /* first receive buffer belonging to host */ ushort ri; /* first receive buffer belonging to interface */ Rendez tr; /* rendezvous for a transmit buffer */ QLock tlock; /* semaphore on th */ ushort th; /* first transmit buffer belonging to host */ ushort ti; /* first transmit buffer belonging to interface */ EtherType type[NType]; uchar prom; /* true if promiscuous mode */ uchar kproc; /* true if kproc started */ char name[NAMELEN]; /* name of kproc */ Network net; Queue lbq; /* software loopback packet queue */ 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 */ };