20060303

1 files changed, 173 insertions, 0 deletions

diff --git a/os/pc/etherec2t.c b/os/pc/etherec2t.c
new file mode 100644
index 00000000..ffbec852
--- /dev/null
+++ b/os/pc/etherec2t.c
@@ -0,0 +1,173 @@
+/*
+ * Supposed NE2000 PCMCIA clones, see the comments in ether2000.c
+ */
+#include "u.h"
+#include "../port/lib.h"
+#include "mem.h"
+#include "dat.h"
+#include "fns.h"
+#include "io.h"
+#include "../port/error.h"
+#include "../port/netif.h"
+
+#include "etherif.h"
+#include "ether8390.h"
+
+enum {
+	Data		= 0x10,		/* offset from I/O base of data port */
+	Reset		= 0x1F,		/* offset from I/O base of reset port */
+};
+
+typedef struct Ec2t {
+	char*	name;
+	int	iochecksum;
+} Ec2t;
+
+static Ec2t ec2tpcmcia[] = {
+	{ "EC2T", 0, },			/* Linksys Combo PCMCIA EthernetCard */
+	{ "PCMPC100", 1, },		/* EtherFast 10/100 PC Card */
+	{ "PCM100", 1, },		/* EtherFast PCM100 Card */
+	{ "EN2216", 0, },		/* Accton EtherPair-PCMCIA */
+	{ "FA410TX", 1, },		/* Netgear FA410TX */
+	{ "Network Everywhere", 0, },	/* Linksys NP10T 10BaseT Card */
+	{ "10/100 Port Attached", 1, },	/* SMC 8040TX */
+	{ "FA411", 0 },			/* Netgear FA411 PCMCIA */
+	{ nil, 0, },
+};
+
+static int
+reset(Ether* ether)
+{
+	ushort buf[16];
+	ulong port;
+	Dp8390 *ctlr;
+	int i, slot;
+	uchar ea[Eaddrlen], sum, x;
+	Ec2t *ec2t, tmpec2t;
+
+	/*
+	 * Set up the software configuration.
+	 * Use defaults for port, irq, mem and size
+	 * if not specified.
+	 * The manual says 16KB memory, the box
+	 * says 32KB. The manual seems to be correct.
+	 */
+	if(ether->port == 0)
+		ether->port = 0x300;
+	if(ether->irq == 0)
+		ether->irq = 9;
+	if(ether->mem == 0)
+		ether->mem = 0x4000;
+	if(ether->size == 0)
+		ether->size = 16*1024;
+	port = ether->port;
+
+	if(ioalloc(ether->port, 0x20, 0, "ec2t") < 0)
+		return -1;
+	slot = -1;
+	for(ec2t = ec2tpcmcia; ec2t->name != nil; ec2t++){
+		if((slot = pcmspecial(ec2t->name, ether)) >= 0)
+			break;
+	}
+	if(ec2t->name == nil){
+		ec2t = &tmpec2t;
+		ec2t->name = nil;
+		ec2t->iochecksum = 0;
+		for(i = 0; i < ether->nopt; i++){
+			if(cistrncmp(ether->opt[i], "id=", 3) == 0){
+				ec2t->name = &ether->opt[i][3];
+				slot = pcmspecial(ec2t->name, ether);
+			}
+			else if(cistrncmp(ether->opt[i], "iochecksum", 10) == 0)
+				ec2t->iochecksum = 1;
+		}
+	}
+	if(slot < 0){
+		iofree(port);
+		return -1;
+	}
+
+	ether->ctlr = malloc(sizeof(Dp8390));
+	ctlr = ether->ctlr;
+	ctlr->width = 2;
+	ctlr->ram = 0;
+
+	ctlr->port = port;
+	ctlr->data = port+Data;
+
+	ctlr->tstart = HOWMANY(ether->mem, Dp8390BufSz);
+	ctlr->pstart = ctlr->tstart + HOWMANY(sizeof(Etherpkt), Dp8390BufSz);
+	ctlr->pstop = ctlr->tstart + HOWMANY(ether->size, Dp8390BufSz);
+
+	ctlr->dummyrr = 0;
+	for(i = 0; i < ether->nopt; i++){
+		if(cistrcmp(ether->opt[i], "nodummyrr") == 0)
+			ctlr->dummyrr = 0;
+		else if(cistrncmp(ether->opt[i], "dummyrr=", 8) == 0)
+			ctlr->dummyrr = strtol(&ether->opt[i][8], nil, 0);
+	}
+
+	/*
+	 * Reset the board. This is done by doing a read
+	 * followed by a write to the Reset address.
+	 */
+	buf[0] = inb(port+Reset);
+	delay(2);
+	outb(port+Reset, buf[0]);
+	delay(2);
+
+	/*
+	 * Init the (possible) chip, then use the (possible)
+	 * chip to read the (possible) PROM for ethernet address
+	 * and a marker byte.
+	 * Could just look at the DP8390 command register after
+	 * initialisation has been tried, but that wouldn't be
+	 * enough, there are other ethernet boards which could
+	 * match.
+	 */
+	dp8390reset(ether);
+	sum = 0;
+	if(ec2t->iochecksum){
+		/*
+		 * These cards have the ethernet address in I/O space.
+		 * There's a checksum over 8 bytes which sums to 0xFF.
+		 */
+		for(i = 0; i < 8; i++){
+			x = inb(port+0x14+i);
+			sum += x;
+			buf[i] = (x<<8)|x;
+		}
+	}
+	else{
+		memset(buf, 0, sizeof(buf));
+		dp8390read(ctlr, buf, 0, sizeof(buf));
+		if((buf[0x0E] & 0xFF) == 0x57 && (buf[0x0F] & 0xFF) == 0x57)
+			sum = 0xFF;
+	}
+	if(sum != 0xFF){
+		pcmspecialclose(slot);
+		iofree(ether->port);
+		free(ether->ctlr);
+		return -1;
+	}
+
+	/*
+	 * Stupid machine. Shorts were asked for,
+	 * shorts were delivered, although the PROM is a byte array.
+	 * Set the ethernet address.
+	 */
+	memset(ea, 0, Eaddrlen);
+	if(memcmp(ea, ether->ea, Eaddrlen) == 0){
+		for(i = 0; i < sizeof(ether->ea); i++)
+			ether->ea[i] = buf[i];
+	}
+	dp8390setea(ether);
+
+	return 0;
+}
+
+void
+etherec2tlink(void)
+{
+	addethercard("EC2T", reset);
+}