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

• Lines: 209
• Date: Fri Feb 25 15:16:37 2000
• Orig file: v2.3.47/linux/drivers/net/tulip/timer.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/drivers/net/tulip/timer.c linux/drivers/net/tulip/timer.c
@@ -0,0 +1,208 @@
+/*
+	drivers/net/tulip/timer.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>
+
+
+void tulip_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;
+	u32 csr12 = inl(ioaddr + CSR12);
+	int next_tick = 2*HZ;
+
+	if (tulip_debug > 2) {
+		printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
+			   " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
+			   dev->name, medianame[dev->if_port], inl(ioaddr + CSR5),
+			   inl(ioaddr + CSR6), csr12, inl(ioaddr + CSR13),
+			   inl(ioaddr + CSR14), inl(ioaddr + CSR15));
+	}
+	switch (tp->chip_id) {
+	case DC21040:
+		if (!tp->medialock  &&  csr12 & 0x0002) { /* Network error */
+			printk(KERN_INFO "%s: No link beat found.\n",
+				   dev->name);
+			dev->if_port = (dev->if_port == 2 ? 0 : 2);
+			tulip_select_media(dev, 0);
+			dev->trans_start = jiffies;
+		}
+		break;
+	case DC21041:
+		if (tulip_debug > 2)
+			printk(KERN_DEBUG "%s: 21041 media tick  CSR12 %8.8x.\n",
+				   dev->name, csr12);
+		if (tp->medialock) break;
+		switch (dev->if_port) {
+		case 0: case 3: case 4:
+		  if (csr12 & 0x0004) { /*LnkFail */
+			/* 10baseT is dead.  Check for activity on alternate port. */
+			tp->mediasense = 1;
+			if (csr12 & 0x0200)
+				dev->if_port = 2;
+			else
+				dev->if_port = 1;
+			printk(KERN_INFO "%s: No 21041 10baseT link beat, Media switched to %s.\n",
+				   dev->name, medianame[dev->if_port]);
+			outl(0, ioaddr + CSR13); /* Reset */
+			outl(t21041_csr14[dev->if_port], ioaddr + CSR14);
+			outl(t21041_csr15[dev->if_port], ioaddr + CSR15);
+			outl(t21041_csr13[dev->if_port], ioaddr + CSR13);
+			next_tick = 10*HZ;			/* 2.4 sec. */
+		  } else
+			next_tick = 30*HZ;
+		  break;
+		case 1:					/* 10base2 */
+		case 2:					/* AUI */
+			if (csr12 & 0x0100) {
+				next_tick = (30*HZ);			/* 30 sec. */
+				tp->mediasense = 0;
+			} else if ((csr12 & 0x0004) == 0) {
+				printk(KERN_INFO "%s: 21041 media switched to 10baseT.\n",
+					   dev->name);
+				dev->if_port = 0;
+				tulip_select_media(dev, 0);
+				next_tick = (24*HZ)/10;				/* 2.4 sec. */
+			} else if (tp->mediasense || (csr12 & 0x0002)) {
+				dev->if_port = 3 - dev->if_port; /* Swap ports. */
+				tulip_select_media(dev, 0);
+				next_tick = 20*HZ;
+			} else {
+				next_tick = 20*HZ;
+			}
+			break;
+		}
+		break;
+	case DC21140:  case DC21142: case MX98713: case COMPEX9881: default: {
+		struct medialeaf *mleaf;
+		unsigned char *p;
+		if (tp->mtable == NULL) {	/* No EEPROM info, use generic code. */
+			/* Not much that can be done.
+			   Assume this a generic MII or SYM transceiver. */
+			next_tick = 60*HZ;
+			if (tulip_debug > 2)
+				printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
+					   "CSR12 0x%2.2x.\n",
+					   dev->name, inl(ioaddr + CSR6), csr12 & 0xff);
+			break;
+		}
+		mleaf = &tp->mtable->mleaf[tp->cur_index];
+		p = mleaf->leafdata;
+		switch (mleaf->type) {
+		case 0: case 4: {
+			/* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
+			int offset = mleaf->type == 4 ? 5 : 2;
+			s8 bitnum = p[offset];
+			if (p[offset+1] & 0x80) {
+				if (tulip_debug > 1)
+					printk(KERN_DEBUG"%s: Transceiver monitor tick "
+						   "CSR12=%#2.2x, no media sense.\n",
+						   dev->name, csr12);
+				if (mleaf->type == 4) {
+					if (mleaf->media == 3 && (csr12 & 0x02))
+						goto select_next_media;
+				}
+				break;
+			}
+			if (tulip_debug > 2)
+				printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
+					   " bit %d is %d, expecting %d.\n",
+					   dev->name, csr12, (bitnum >> 1) & 7,
+					   (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
+					   (bitnum >= 0));
+			/* Check that the specified bit has the proper value. */
+			if ((bitnum < 0) !=
+				((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
+				if (tulip_debug > 1)
+					printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
+						   medianame[mleaf->media]);
+				if ((p[2] & 0x61) == 0x01)	/* Bogus Znyx board. */
+					goto actually_mii;
+				break;
+			}
+			if (tp->medialock)
+				break;
+	  select_next_media:
+			if (--tp->cur_index < 0) {
+				/* We start again, but should instead look for default. */
+				tp->cur_index = tp->mtable->leafcount - 1;
+			}
+			dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
+			if (tulip_media_cap[dev->if_port] & MediaIsFD)
+				goto select_next_media; /* Skip FD entries. */
+			if (tulip_debug > 1)
+				printk(KERN_DEBUG "%s: No link beat on media %s,"
+					   " trying transceiver type %s.\n",
+					   dev->name, medianame[mleaf->media & 15],
+					   medianame[tp->mtable->mleaf[tp->cur_index].media]);
+			tulip_select_media(dev, 0);
+			/* Restart the transmit process. */
+			tulip_outl_CSR6(tp, tp->csr6 | 0x0002);
+			tulip_outl_CSR6(tp, tp->csr6 | 0x2002);
+			next_tick = (24*HZ)/10;
+			break;
+		}
+		case 1:  case 3:		/* 21140, 21142 MII */
+		actually_mii:
+			tulip_check_duplex(dev);
+			next_tick = 60*HZ;
+			break;
+		case 2:					/* 21142 serial block has no link beat. */
+		default:
+			break;
+		}
+	}
+	break;
+	}
+	tp->timer.expires = RUN_AT(next_tick);
+	add_timer(&tp->timer);
+}
+
+
+void mxic_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_debug > 3) {
+		printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
+			   inl(ioaddr + CSR12));
+	}
+	if (next_tick) {
+		tp->timer.expires = RUN_AT(next_tick);
+		add_timer(&tp->timer);
+	}
+}
+
+
+void comet_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_debug > 1)
+		printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
+			   "%4.4x.\n",
+			   dev->name, inl(ioaddr + 0xB8), inl(ioaddr + 0xC8));
+	tp->timer.expires = RUN_AT(next_tick);
+	add_timer(&tp->timer);
+}
+