1 files changed, 71 insertions, 0 deletions
diff --git a/os/boot/pc/ether8390.h b/os/boot/pc/ether8390.h
new file mode 100644
index 00000000..1c464110
--- /dev/null
+++ b/os/boot/pc/ether8390.h
@@ -0,0 +1,71 @@
+/*
+ * Ctlr for the boards using the National Semiconductor DP8390
+ * and SMC 83C90 Network Interface Controller.
+ * Common code is in ether8390.c.
+ */
+typedef struct {
+	Lock;
+
+	ulong	port;			/* I/O address of 8390 */
+	ulong	data;			/* I/O data port if no shared memory */
+
+	uchar	width;			/* data transfer width in bytes */
+	uchar	ram;			/* true if card has shared memory */
+	uchar	dummyrr;		/* do dummy remote read */
+
+	uchar	nxtpkt;			/* receive: software bndry */
+	uchar	pstart;
+	uchar	pstop;
+
+	int	txbusy;			/* transmit */
+	uchar	tstart;			/* 8390 ring addresses */
+} Dp8390;
+
+#define Dp8390BufSz	256
+
+extern int dp8390reset(Ether*);
+extern void *dp8390read(Dp8390*, void*, ulong, ulong);
+extern void dp8390getea(Ether*, uchar*);
+extern void dp8390setea(Ether*);
+
+/*
+ * x86-specific code.
+ */
+#define regr(c, r)	inb((c)->port+(r))
+#define regw(c, r, v)	outb((c)->port+(r), (v))
+
+static void
+rdread(Dp8390* ctlr, void* to, int len)
+{
+	switch(ctlr->width){
+	default:
+		panic("dp8390 rdread: width %d\n", ctlr->width);
+		break;
+
+	case 2:
+		inss(ctlr->data, to, len/2);
+		break;
+
+	case 1:
+		insb(ctlr->data, to, len);
+		break;
+	}
+}
+
+static void
+rdwrite(Dp8390* ctlr, void* from, int len)
+{
+	switch(ctlr->width){
+	default:
+		panic("dp8390 rdwrite: width %d\n", ctlr->width);
+		break;
+
+	case 2:
+		outss(ctlr->data, from, len/2);
+		break;
+
+	case 1:
+		outsb(ctlr->data, from, len);
+		break;
+	}
+}