Split 3c509.c into 3c509.9 and 3c529.c, with shared code in 3c5x9.c.

Probe mechanisms now use standard EISA and MCA bus methods, with 3c509.c
defining a custom ISA bus to handle the 3c509 contention resolution logic.

src/drivers/net/3c529.c

@@ -0,0 +1,49 @@
+/*
+ * Split out from 3c509.c to make build process more sane
+ *
+ */
+
+#include "etherboot.h"
+#include "mca.h"
+#include "isa.h"
+#include "nic.h"
+#include "3c509.h"
+
+/*
+ * This table and several other pieces of the MCA support
+ * code were shamelessly borrowed from the Linux kernel source.
+ *
+ * MCA support added by Adam Fritzler (mid@auk.cx)
+ *
+ */
+static struct mca_id el3_mca_adapters[] = {
+        { "3Com 3c529 EtherLink III (10base2)", 0x627c },
+        { "3Com 3c529 EtherLink III (10baseT)", 0x627d },
+        { "3Com 3c529 EtherLink III (test mode)", 0x62db },
+        { "3Com 3c529 EtherLink III (TP or coax)", 0x62f6 },
+        { "3Com 3c529 EtherLink III (TP)", 0x62f7 },
+};
+
+static struct mca_driver t529_driver
+	= MCA_DRIVER ( "3c529", el3_mca_adapters );
+
+ISA_ROM( "3c529", "3c529 == MCA 3c509" );
+
+static int t529_probe ( struct dev *dev ) {
+	struct nic *nic = nic_device ( dev );
+	struct mca_device *mca = mca_device ( dev );
+
+	if ( ! find_mca_device ( mca, &t529_driver ) )
+		return 0;
+
+	/* Retrieve NIC parameters from MCA device parameters */
+	nic->ioaddr = ( ( mca->pos[4] & 0xfc ) | 0x02 ) << 8;
+	nic->irqno = mca->pos[5] & 0x0f;
+	printf ( "%s board found on MCA at %#hx IRQ %d -",
+		 dev->name, nic->ioaddr, nic->irqno );
+
+	/* Hand off to generic t5x9 probe routine */
+	return t5x9_probe ( nic, MCA_ID ( mca ), 0xffff );
+}
+
+BOOT_DRIVER ( "3c529", t529_probe );