xircom_tulip_cb.c

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				csr14val = setup[1];
				csr15dir = (setup[3]<<16) | setup[2];
				csr15val = (setup[4]<<16) | setup[2];
				outl(0, ioaddr + CSR13);
				outl(csr14val, ioaddr + CSR14);
				outl(csr15dir, ioaddr + CSR15);	/* Direction */
				outl(csr15val, ioaddr + CSR15);	/* Data */
				outl(csr13val, ioaddr + CSR13);
			} else {
				csr13val = 1;
				csr14val = 0x0003FF7F;
				csr15dir = (setup[0]<<16) | 0x0008;
				csr15val = (setup[1]<<16) | 0x0008;
				if (dev->if_port <= 4)
					csr14val = t21142_csr14[dev->if_port];
				if (startup) {
					outl(0, ioaddr + CSR13);
					outl(csr14val, ioaddr + CSR14);
				}
				outl(csr15dir, ioaddr + CSR15);	/* Direction */
				outl(csr15val, ioaddr + CSR15);	/* Data */
				if (startup) outl(csr13val, ioaddr + CSR13);
			}
			if (tulip_debug > 1)
				printk(KERN_DEBUG "%s:  Setting CSR15 to %8.8x/%8.8x.\n",
					   dev->name, csr15dir, csr15val);
			if (mleaf->type == 4)
				new_csr6 = 0x82020000 | ((setup[2] & 0x71) << 18);
			else
				new_csr6 = 0x82420000;
			break;
		}
		case 1: case 3: {
			int phy_num = p[0];
			int init_length = p[1];
			u16 *misc_info;
			u16 to_advertise;

			dev->if_port = 11;
			new_csr6 = 0x020E0000;
			if (mleaf->type == 3) {	/* 21142 */
				u16 *init_sequence = (u16*)(p+2);
				u16 *reset_sequence = &((u16*)(p+3))[init_length];
				int reset_length = p[2 + init_length*2];
				misc_info = reset_sequence + reset_length;
				if (startup)
					for (i = 0; i < reset_length; i++)
						outl(get_u16(&reset_sequence[i]) << 16, ioaddr + CSR15);
				for (i = 0; i < init_length; i++)
					outl(get_u16(&init_sequence[i]) << 16, ioaddr + CSR15);
			} else {
				u8 *init_sequence = p + 2;
				u8 *reset_sequence = p + 3 + init_length;
				int reset_length = p[2 + init_length];
				misc_info = (u16*)(reset_sequence + reset_length);
				if (startup) {
					outl(mtable->csr12dir | 0x100, ioaddr + CSR12);
					for (i = 0; i < reset_length; i++)
						outl(reset_sequence[i], ioaddr + CSR12);
				}
				for (i = 0; i < init_length; i++)
					outl(init_sequence[i], ioaddr + CSR12);
			}
			to_advertise = (get_u16(&misc_info[1]) & tp->to_advertise) | 1;
			tp->advertising[phy_num] = to_advertise;
			if (tulip_debug > 1)
				printk(KERN_DEBUG "%s:  Advertising %4.4x on PHY %d (%d).\n",
					   dev->name, to_advertise, phy_num, tp->phys[phy_num]);
			/* Bogus: put in by a committee?  */
			mdio_write(dev, tp->phys[phy_num], 4, to_advertise);
			break;
		}
		default:
			printk(KERN_DEBUG "%s:  Invalid media table selection %d.\n",
					   dev->name, mleaf->type);
			new_csr6 = 0x020E0000;
		}
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: Using media type %s, CSR12 is %2.2x.\n",
				   dev->name, medianame[dev->if_port],
				   inl(ioaddr + CSR12) & 0xff);
	} else if (tp->chip_id == DC21041) {
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: 21041 using media %s, CSR12 is %4.4x.\n",
				   dev->name, medianame[dev->if_port & 15],
				   inl(ioaddr + CSR12) & 0xffff);
		outl(0x00000000, ioaddr + CSR13); /* Reset the serial interface */
		outl(t21041_csr14[dev->if_port], ioaddr + CSR14);
		outl(t21041_csr15[dev->if_port], ioaddr + CSR15);
		outl(t21041_csr13[dev->if_port], ioaddr + CSR13);
		new_csr6 = 0x80020000;
	} else if (tp->chip_id == LC82C168 || tp->chip_id == PNIC2) {
		if (startup && ! tp->medialock)
			dev->if_port = tp->mii_cnt ? 11 : 0;
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: PNIC PHY status is %3.3x, CSR12 %4.4x,"
				   " media %s.\n",
				   dev->name, inl(ioaddr + 0xB8), inl(ioaddr + CSR12),
				   medianame[dev->if_port]);
		if (tp->mii_cnt) {
			new_csr6 = 0x810C0000;
			outl(0x0001, ioaddr + CSR15);
			outl(0x0201B07A, ioaddr + 0xB8);
		} else if (startup) {
			/* Start with 10mbps to do autonegotiation. */
			outl(0x32, ioaddr + CSR12);
			new_csr6 = 0x00420000;
			outl(0x0001B078, ioaddr + 0xB8);
			outl(0x0201B078, ioaddr + 0xB8);
		} else if (dev->if_port == 3  ||  dev->if_port == 5) {
			outl(0x33, ioaddr + CSR12);
			new_csr6 = 0x01860000;
			if (startup)
				outl(0x0201F868, ioaddr + 0xB8); /* Trigger autonegotiation. */
			else
				outl(0x1F868, ioaddr + 0xB8);
		} else {
			outl(0x32, ioaddr + CSR12);
			new_csr6 = 0x00420000;
			outl(0x1F078, ioaddr + 0xB8);
		}
	} else if (tp->chip_id == DC21040) {					/* 21040 */
		/* Turn on the xcvr interface. */
		int csr12 = inl(ioaddr + CSR12);
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: 21040 media type is %s, CSR12 is %2.2x.\n",
				   dev->name, medianame[dev->if_port], csr12);
		if (media_cap[dev->if_port] & MediaAlwaysFD)
			tp->full_duplex = 1;
		new_csr6 = 0x20000;
		/* Set the full duplux match frame. */
		outl(FULL_DUPLEX_MAGIC, ioaddr + CSR11);
		outl(0x00000000, ioaddr + CSR13); /* Reset the serial interface */
		if (t21040_csr13[dev->if_port] & 8) {
			outl(0x0705, ioaddr + CSR14);
			outl(0x0006, ioaddr + CSR15);
		} else {
			outl(0xffff, ioaddr + CSR14);
			outl(0x0000, ioaddr + CSR15);
		}
		outl(0x8f01 | t21040_csr13[dev->if_port], ioaddr + CSR13);
	} else if (tp->chip_id == X3201_3) {					/* Xircom */
		if (tp->default_port == 0)
			dev->if_port = tp->mii_cnt ? 11 : 3;
/* Someone is on crack, the Xircom only does MII, no Fx */
/*		if (media_cap[dev->if_port] & MediaIsMII) {
			new_csr6 = 0x020E0000;
		} else if (media_cap[dev->if_port] & MediaIsFx) {
			new_csr6 = 0x028600000;
		} else
			new_csr6 = 0x038600000;*/
		new_csr6 = 0x324c0000;
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: Xircom CardBus Adapter: "
				   "%s transceiver, CSR12 %2.2x.\n",
				   dev->name, medianame[dev->if_port],
				   inl(ioaddr + CSR12));
	} else {					/* Unknown chip type with no media table. */
		if (tp->default_port == 0)
			dev->if_port = tp->mii_cnt ? 11 : 3;
		if (media_cap[dev->if_port] & MediaIsMII) {
			new_csr6 = 0x020E0000;
		} else if (media_cap[dev->if_port] & MediaIsFx) {
			new_csr6 = 0x028600000;
		} else
			new_csr6 = 0x038600000;
		if (tulip_debug > 1)
			printk(KERN_DEBUG "%s: No media description table, assuming "
				   "%s transceiver, CSR12 %2.2x.\n",
				   dev->name, medianame[dev->if_port],
				   inl(ioaddr + CSR12));
	}

	tp->csr6 = new_csr6 | (tp->csr6 & 0xfdff) | (tp->full_duplex ? 0x0200 : 0);
	return;
}

/*
  Check the MII negotiated duplex, and change the CSR6 setting if
  required.
  Return 0 if everything is OK.
  Return < 0 if the transceiver is missing or has no link beat.
  */
static int check_duplex(struct net_device *dev)
{
	long ioaddr = dev->base_addr;
	struct tulip_private *tp = (struct tulip_private *)dev->priv;
	int mii_reg1, mii_reg5, negotiated, duplex;

	if (tp->full_duplex_lock)
		return 0;
	mii_reg1 = mdio_read(dev, tp->phys[0], 1);
	mii_reg5 = mdio_read(dev, tp->phys[0], 5);
	if (tulip_debug > 1)
		printk(KERN_INFO "%s: MII status %4.4x, Link partner report "
			   "%4.4x.\n", dev->name, mii_reg1, mii_reg5);
	if (mii_reg1 == 0xffff)
		return -2;
	if ((mii_reg1 & 0x0004) == 0) {
		int new_reg1 = mdio_read(dev, tp->phys[0], 1);
		if ((new_reg1 & 0x0004) == 0) {
			if (tulip_debug  > 1)
				printk(KERN_INFO "%s: No link beat on the MII interface,"
					   " status %4.4x.\n", dev->name, new_reg1);
			return -1;
		}
	}
	negotiated = mii_reg5 & tp->advertising[0];
	duplex = ((negotiated & 0x0300) == 0x0100
			  || (negotiated & 0x00C0) == 0x0040);
	/* 100baseTx-FD  or  10T-FD, but not 100-HD */
	if (tp->full_duplex != duplex) {
		tp->full_duplex = duplex;
		if (tp->full_duplex) tp->csr6 |= 0x0200;
		else				 tp->csr6 &= ~0x0200;
		outl_CSR6(tp->csr6 | 0x0002, ioaddr, tp->chip_id);
		outl_CSR6(tp->csr6 | 0x2002, ioaddr, tp->chip_id);
		if (tulip_debug > 0)
			printk(KERN_INFO "%s: Setting %s-duplex based on MII"
				   "#%d link partner capability of %4.4x.\n",
				   dev->name, tp->full_duplex ? "full" : "half",
				   tp->phys[0], mii_reg5);
	}
	return 0;
}

static 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, status %8.8x mode %8.8x "
			   "SIA %8.8x %8.8x %8.8x %8.8x.\n",
			   dev->name, 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);
			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);
		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;
				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. */
				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 (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]);
			select_media(dev, 0);
			/* Restart the transmit process. */
			outl_CSR6(tp->csr6 | 0x0002, ioaddr, tp->chip_id);
			outl_CSR6(tp->csr6 | 0x2002, ioaddr, tp->chip_id);
			next_tick = (24*HZ)/10;
			break;
		}
		case 1:  case 3:		/* 21140, 21142 MII */
		actually_mii:
			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);
}

/* Handle th