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

• Lines: 147
• Date: Fri Feb 25 15:16:37 2000
• Orig file: v2.3.47/linux/drivers/net/tulip/pnic.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/drivers/net/tulip/pnic.c linux/drivers/net/tulip/pnic.c
@@ -0,0 +1,146 @@
+/*
+	drivers/net/tulip/pnic.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 <linux/kernel.h>
+#include "tulip.h"
+#include <asm/io.h>
+
+
+void pnic_do_nway(struct net_device *dev)
+{
+	struct tulip_private *tp = (struct tulip_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	u32 phy_reg = inl(ioaddr + 0xB8);
+	u32 new_csr6 = tp->csr6 & ~0x40C40200;
+
+	if (phy_reg & 0x78000000) { /* Ignore baseT4 */
+		if (phy_reg & 0x20000000)		dev->if_port = 5;
+		else if (phy_reg & 0x40000000)	dev->if_port = 3;
+		else if (phy_reg & 0x10000000)	dev->if_port = 4;
+		else if (phy_reg & 0x08000000)	dev->if_port = 0;
+		tp->nwayset = 1;
+		new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000;
+		outl(0x32 | (dev->if_port & 1), ioaddr + CSR12);
+		if (dev->if_port & 1)
+			outl(0x1F868, ioaddr + 0xB8);
+		if (phy_reg & 0x30000000) {
+			tp->full_duplex = 1;
+			new_csr6 |= 0x00000200;
+		}
+		if (tulip_debug > 1)
+			printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n",
+				   dev->name, phy_reg, medianame[dev->if_port]);
+		if (tp->csr6 != new_csr6) {
+			tp->csr6 = new_csr6;
+			/* Restart Tx */
+			tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
+			tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+			dev->trans_start = jiffies;
+		}
+	}
+}
+
+
+void pnic_lnk_change(struct net_device *dev, int csr5)
+{
+	struct tulip_private *tp = (struct tulip_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int phy_reg = inl(ioaddr + 0xB8);
+
+	if (tulip_debug > 1)
+		printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n",
+			   dev->name, phy_reg, csr5);
+	if (inl(ioaddr + CSR5) & TPLnkFail) {
+		outl((inl(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7);
+		if (! tp->nwayset  ||  jiffies - dev->trans_start > 1*HZ) {
+			tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff);
+			tulip_outl_CSR6(tp, tp->csr6);
+			outl(0x30, ioaddr + CSR12);
+			outl(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */
+			dev->trans_start = jiffies;
+		}
+	} else if (inl(ioaddr + CSR5) & TPLnkPass) {
+		pnic_do_nway(dev);
+		outl((inl(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7);
+	}
+}
+
+
+void pnic_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 next_tick = 60*HZ;
+
+	if (tulip_media_cap[dev->if_port] & MediaIsMII) {
+		if (tulip_check_duplex(dev) > 0)
+			next_tick = 3*HZ;
+	} else {
+		int csr12 = inl(ioaddr + CSR12);
+		int new_csr6 = tp->csr6 & ~0x40C40200;
+		int phy_reg = inl(ioaddr + 0xB8);
+		int csr5 = inl(ioaddr + CSR5);
+
+		if (tulip_debug > 1)
+			printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s "
+				   "CSR5 %8.8x.\n",
+				   dev->name, phy_reg, medianame[dev->if_port], csr5);
+		if (phy_reg & 0x04000000) {	/* Remote link fault */
+			outl(0x0201F078, ioaddr + 0xB8);
+			next_tick = 1*HZ;
+			tp->nwayset = 0;
+		} else if (phy_reg & 0x78000000) { /* Ignore baseT4 */
+			pnic_do_nway(dev);
+			next_tick = 60*HZ;
+		} else if (csr5 & TPLnkFail) { /* 100baseTx link beat */
+			if (tulip_debug > 1)
+				printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, "
+					   "CSR5 %8.8x, PHY %3.3x.\n",
+					   dev->name, medianame[dev->if_port], csr12,
+					   inl(ioaddr + CSR5), inl(ioaddr + 0xB8));
+			next_tick = 3*HZ;
+			if (tp->medialock) {
+			} else if (tp->nwayset  &&  (dev->if_port & 1)) {
+				next_tick = 1*HZ;
+			} else if (dev->if_port == 0) {
+				dev->if_port = 3;
+				outl(0x33, ioaddr + CSR12);
+				new_csr6 = 0x01860000;
+				outl(0x1F868, ioaddr + 0xB8);
+			} else {
+				dev->if_port = 0;
+				outl(0x32, ioaddr + CSR12);
+				new_csr6 = 0x00420000;
+				outl(0x1F078, ioaddr + 0xB8);
+			}
+			if (tp->csr6 != new_csr6) {
+				tp->csr6 = new_csr6;
+				/* Restart Tx */
+				tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
+				tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+				dev->trans_start = jiffies;
+				if (tulip_debug > 1)
+					printk(KERN_INFO "%s: Changing PNIC configuration to %s "
+						   "%s-duplex, CSR6 %8.8x.\n",
+						   dev->name, medianame[dev->if_port],
+						   tp->full_duplex ? "full" : "half", new_csr6);
+			}
+		}
+	}
+	tp->timer.expires = RUN_AT(next_tick);
+	add_timer(&tp->timer);
+}
+