20060303

1 files changed, 82 insertions, 0 deletions

diff --git a/os/boot/puma/ether.h b/os/boot/puma/ether.h
new file mode 100644
index 00000000..26f5f64b
--- /dev/null
+++ b/os/boot/puma/ether.h
@@ -0,0 +1,82 @@
+/*
+ * All the goo for PC ethernet cards.
+ */
+typedef struct Card Card;
+typedef struct RingBuf RingBuf;
+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*, Ctlr*);
+	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 ring buffer.
+ */
+struct RingBuf {
+	uchar	owner;
+	uchar	busy;			/* unused */
+	ushort	len;
+	uchar	pkt[sizeof(Etherpkt)];
+};
+
+enum {
+	Host		= 0,		/* buffer owned by host */
+	Interface	= 1,		/* buffer owned by card */
+
+	Nrb		= 16,		/* default number of receive buffers */
+	Ntb		= 2,		/* default number of transmit buffers */
+};
+
+/*
+ * 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 */
+};
+
+#define NEXT(x, l)	(((x)+1)%(l))
+#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
+#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
+
+extern int cs8900reset(Ctlr*);
+extern int	etheriq(Ctlr*, Block*, int);