patch-2.3.48 linux/drivers/net/tulip/21142.c

• Lines: 236
• Date: Fri Feb 25 15:16:37 2000
• Orig file: v2.3.47/linux/drivers/net/tulip/21142.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/drivers/net/tulip/21142.c linux/drivers/net/tulip/21142.c
@@ -0,0 +1,235 @@
+/*
+	drivers/net/tulip/21142.c
+
+	Maintained by Jeff Garzik <jgarzik@mandrakesoft.com>
+	Copyright 2000  The Linux Kernel Team
+	Written/copyright 1994-1999 by Donald Becker.
+
+	This software may be used and distributed according to the terms
+	of the GNU Public License, incorporated herein by reference.
+
+	Please refer to Documentation/networking/tulip.txt for more
+	information on this driver.
+
+*/
+
+#include "tulip.h"
+#include <asm/io.h>
+
+
+static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
+u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
+static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
+
+
+
+/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
+   of available transceivers.  */
+void t21142_timer(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *)data;
+	struct tulip_private *tp = (struct tulip_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int csr12 = inl(ioaddr + CSR12);
+	int next_tick = 60*HZ;
+	int new_csr6 = 0;
+
+	if (tulip_debug > 2)
+		printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
+			   dev->name, csr12, medianame[dev->if_port]);
+	if (tulip_media_cap[dev->if_port] & MediaIsMII) {
+		tulip_check_duplex(dev);
+		next_tick = 60*HZ;
+	} else if (tp->nwayset) {
+		/* Don't screw up a negotiated session! */
+		if (tulip_debug > 1)
+			printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
+				   dev->name, medianame[dev->if_port], csr12);
+	} else if (tp->medialock) {
+			;
+	} else if (dev->if_port == 3) {
+		if (csr12 & 2) {	/* No 100mbps link beat, revert to 10mbps. */
+			if (tulip_debug > 1)
+				printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
+					   "trying NWay.\n", dev->name, csr12);
+			t21142_start_nway(dev);
+			next_tick = 3*HZ;
+		}
+	} else if ((csr12 & 0x7000) != 0x5000) {
+		/* Negotiation failed.  Search media types. */
+		if (tulip_debug > 1)
+			printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
+				   dev->name, csr12);
+		if (!(csr12 & 4)) {		/* 10mbps link beat good. */
+			new_csr6 = 0x82420000;
+			dev->if_port = 0;
+			outl(0, ioaddr + CSR13);
+			outl(0x0003FFFF, ioaddr + CSR14);
+			outw(t21142_csr15[dev->if_port], ioaddr + CSR15);
+			outl(t21142_csr13[dev->if_port], ioaddr + CSR13);
+		} else {
+			/* Select 100mbps port to check for link beat. */
+			new_csr6 = 0x83860000;
+			dev->if_port = 3;
+			outl(0, ioaddr + CSR13);
+			outl(0x0003FF7F, ioaddr + CSR14);
+			outw(8, ioaddr + CSR15);
+			outl(1, ioaddr + CSR13);
+		}
+		if (tulip_debug > 1)
+			printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
+				   dev->name, medianame[dev->if_port]);
+		if (new_csr6 != (tp->csr6 & ~0x00D5)) {
+			tp->csr6 &= 0x00D5;
+			tp->csr6 |= new_csr6;
+			outl(0x0301, ioaddr + CSR12);
+			tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
+			tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+		}
+		next_tick = 3*HZ;
+	}
+
+	tp->timer.expires = RUN_AT(next_tick);
+	add_timer(&tp->timer);
+}
+
+
+void t21142_start_nway(struct net_device *dev)
+{
+	struct tulip_private *tp = (struct tulip_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int csr14 = ((tp->to_advertise & 0x0780) << 9)  |
+		((tp->to_advertise&0x0020)<<1) | 0xffbf;
+
+	dev->if_port = 0;
+	tp->nway = tp->mediasense = 1;
+	tp->nwayset = tp->lpar = 0;
+	if (tulip_debug > 1)
+		printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, %8.8x.\n",
+			   dev->name, csr14);
+	outl(0x0001, ioaddr + CSR13);
+	outl(csr14, ioaddr + CSR14);
+	tp->csr6 = 0x82420000 | (tp->to_advertise & 0x0040 ? 0x0200 : 0);
+	tulip_outl_CSR6(tp, tp->csr6);
+	if (tp->mtable  &&  tp->mtable->csr15dir) {
+		outl(tp->mtable->csr15dir, ioaddr + CSR15);
+		outl(tp->mtable->csr15val, ioaddr + CSR15);
+	} else
+		outw(0x0008, ioaddr + CSR15);
+	outl(0x1301, ioaddr + CSR12); 		/* Trigger NWAY. */
+}
+
+
+void t21142_lnk_change(struct net_device *dev, int csr5)
+{
+	struct tulip_private *tp = (struct tulip_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int csr12 = inl(ioaddr + CSR12);
+
+	if (tulip_debug > 1)
+		printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
+			   "%8.8x.\n", dev->name, csr12, csr5, inl(ioaddr + CSR14));
+
+	/* If NWay finished and we have a negotiated partner capability. */
+	if (tp->nway  &&  !tp->nwayset  &&  (csr12 & 0x7000) == 0x5000) {
+		int setup_done = 0;
+		int negotiated = tp->to_advertise & (csr12 >> 16);
+		tp->lpar = csr12 >> 16;
+		tp->nwayset = 1;
+		if (negotiated & 0x0100)		dev->if_port = 5;
+		else if (negotiated & 0x0080)	dev->if_port = 3;
+		else if (negotiated & 0x0040)	dev->if_port = 4;
+		else if (negotiated & 0x0020)	dev->if_port = 0;
+		else {
+			tp->nwayset = 0;
+			if ((csr12 & 2) == 0  &&  (tp->to_advertise & 0x0180))
+				dev->if_port = 3;
+		}
+		tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
+
+		if (tulip_debug > 1) {
+			if (tp->nwayset)
+				printk(KERN_INFO "%s: Switching to %s based on link "
+					   "negotiation %4.4x & %4.4x = %4.4x.\n",
+					   dev->name, medianame[dev->if_port], tp->to_advertise,
+					   tp->lpar, negotiated);
+			else
+				printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
+					   " link beat status %4.4x.\n",
+					   dev->name, medianame[dev->if_port], csr12);
+		}
+
+		if (tp->mtable) {
+			int i;
+			for (i = 0; i < tp->mtable->leafcount; i++)
+				if (tp->mtable->mleaf[i].media == dev->if_port) {
+					tp->cur_index = i;
+					tulip_select_media(dev, 0);
+					setup_done = 1;
+					break;
+				}
+		}
+		if ( ! setup_done) {
+			tp->csr6 = dev->if_port & 1 ? 0x83860000 : 0x82420000;
+			if (tp->full_duplex)
+				tp->csr6 |= 0x0200;
+			outl(1, ioaddr + CSR13);
+		}
+#if 0							/* Restart shouldn't be needed. */
+		tulip_outl_CSR6(tp, tp->csr6 | 0x0000);
+		if (tulip_debug > 2)
+			printk(KERN_DEBUG "%s:  Restarting Tx and Rx, CSR5 is %8.8x.\n",
+				   dev->name, inl(ioaddr + CSR5));
+#endif
+		tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+		if (tulip_debug > 2)
+			printk(KERN_DEBUG "%s:  Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
+				   dev->name, tp->csr6, inl(ioaddr + CSR6),
+				   inl(ioaddr + CSR12));
+	} else if ((tp->nwayset  &&  (csr5 & 0x08000000)
+				&& (dev->if_port == 3  ||  dev->if_port == 5)
+				&& (csr12 & 2) == 2) ||
+			   (tp->nway && (csr5 & (TPLnkFail)))) {
+		/* Link blew? Maybe restart NWay. */
+		del_timer(&tp->timer);
+		t21142_start_nway(dev);
+		tp->timer.expires = RUN_AT(3*HZ);
+		add_timer(&tp->timer);
+	} else if (dev->if_port == 3  ||  dev->if_port == 5) {
+		if (tulip_debug > 1)
+			printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
+				   dev->name, medianame[dev->if_port],
+				   (csr12 & 2) ? "failed" : "good");
+		if ((csr12 & 2)  &&  ! tp->medialock) {
+			del_timer(&tp->timer);
+			t21142_start_nway(dev);
+			tp->timer.expires = RUN_AT(3*HZ);
+			add_timer(&tp->timer);
+		}
+	} else if (dev->if_port == 0  ||  dev->if_port == 4) {
+		if ((csr12 & 4) == 0)
+			printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
+				   dev->name);
+	} else if (!(csr12 & 4)) {		/* 10mbps link beat good. */
+		if (tulip_debug)
+			printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
+				   dev->name);
+		dev->if_port = 0;
+	} else if (tp->nwayset) {
+		if (tulip_debug)
+			printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
+				   dev->name, medianame[dev->if_port], tp->csr6);
+	} else {		/* 100mbps link beat good. */
+		if (tulip_debug)
+			printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
+				   dev->name);
+		dev->if_port = 3;
+		tp->csr6 = 0x83860000;
+		outl(0x0003FF7F, ioaddr + CSR14);
+		outl(0x0301, ioaddr + CSR12);
+		tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
+		tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+	}
+}
+
+