patch-2.3.41 linux/drivers/net/tokenring/madgemc.c

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diff -u --recursive --new-file v2.3.40/linux/drivers/net/tokenring/madgemc.c linux/drivers/net/tokenring/madgemc.c
@@ -0,0 +1,806 @@
+/*
+ *  madgemc.c: Driver for the Madge Smart 16/4 MC16 MCA token ring card.
+ *
+ *  Written 2000 by Adam Fritzler
+ *
+ *  This software may be used and distributed according to the terms
+ *  of the GNU Public License, incorporated herein by reference.
+ *
+ *  This driver module supports the following cards:
+ *      - Madge Smart 16/4 Ringnode MC16
+ *	- Madge Smart 16/4 Ringnode MC32 (??)
+ *
+ *  Maintainer(s):
+ *    AF	Adam Fritzler		mid@auk.cx
+ *
+ *  Modification History:
+ *	16-Jan-00	AF	Created
+ *
+ */
+static const char *version = "madgemc.c: v0.91 23/01/2000 by Adam Fritzler\n";
+
+#include <linux/module.h>
+#include <linux/mca.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+#include "tms380tr.h"
+#include "madgemc.h"            /* Madge-specific constants */
+
+#define MADGEMC_IO_EXTENT 32
+#define MADGEMC_SIF_OFFSET 0x08
+
+struct madgemc_card {
+	struct net_device *dev;
+
+	/*
+	 * These are read from the BIA ROM.
+	 */
+	unsigned int manid;
+	unsigned int cardtype;
+	unsigned int cardrev;
+	unsigned int ramsize;
+	
+	/*
+	 * These are read from the MCA POS registers.  
+	 */
+	unsigned int burstmode:2;
+	unsigned int fairness:1; /* 0 = Fair, 1 = Unfair */
+	unsigned int arblevel:4;
+	unsigned int ringspeed:2; /* 0 = 4mb, 1 = 16, 2 = Auto/none */
+	unsigned int cabletype:1; /* 0 = RJ45, 1 = DB9 */
+
+	struct madgemc_card *next;
+};
+static struct madgemc_card *madgemc_card_list = NULL;
+
+
+int madgemc_probe(void);
+static int madgemc_open(struct net_device *dev);
+static int madgemc_close(struct net_device *dev);
+static int madgemc_chipset_init(struct net_device *dev);
+static void madgemc_read_rom(struct madgemc_card *card);
+static unsigned short madgemc_setnselout_pins(struct net_device *dev);
+static void madgemc_setcabletype(struct net_device *dev, int type);
+
+static int madgemc_mcaproc(char *buf, int slot, void *d);
+
+static void madgemc_setregpage(struct net_device *dev, int page);
+static void madgemc_setsifsel(struct net_device *dev, int val);
+static void madgemc_setint(struct net_device *dev, int val);
+
+static void madgemc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+/*
+ * These work around paging, however they dont guarentee you're on the
+ * right page.
+ */
+#define SIFREADB(reg) (inb(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
+#define SIFWRITEB(val, reg) (outb(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
+#define SIFREADW(reg) (inw(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
+#define SIFWRITEW(val, reg) (outw(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
+
+/*
+ * Read a byte-length value from the register.
+ */
+static unsigned short madgemc_sifreadb(struct net_device *dev, unsigned short reg)
+{
+	unsigned short ret;
+	if (reg<0x8)	
+		ret = SIFREADB(reg);
+	else {
+		madgemc_setregpage(dev, 1);	
+		ret = SIFREADB(reg);
+		madgemc_setregpage(dev, 0);
+	}
+	return ret;
+}
+
+/*
+ * Write a byte-length value to a register.
+ */
+static void madgemc_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	if (reg<0x8)
+		SIFWRITEB(val, reg);
+	else {
+		madgemc_setregpage(dev, 1);
+		SIFWRITEB(val, reg);
+		madgemc_setregpage(dev, 0);
+	}
+	return;
+}
+
+/*
+ * Read a word-length value from a register
+ */
+static unsigned short madgemc_sifreadw(struct net_device *dev, unsigned short reg)
+{
+	unsigned short ret;
+	if (reg<0x8)	
+		ret = SIFREADW(reg);
+	else {
+		madgemc_setregpage(dev, 1);	
+		ret = SIFREADW(reg);
+		madgemc_setregpage(dev, 0);
+	}
+	return ret;
+}
+
+/*
+ * Write a word-length value to a register.
+ */
+static void madgemc_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	if (reg<0x8)
+		SIFWRITEW(val, reg);
+	else {
+		madgemc_setregpage(dev, 1);
+		SIFWRITEW(val, reg);
+		madgemc_setregpage(dev, 0);
+	}
+	return;
+}
+
+
+
+int __init madgemc_probe(void)
+{	
+	static int versionprinted = 0;
+	struct net_device *dev;
+	struct net_local *tp;
+	struct madgemc_card *card;
+	int i,slot = 0;
+	__u8 posreg[4];
+
+	if (!MCA_bus)
+		return -1;	
+       
+	while (slot != MCA_NOTFOUND) {
+		/*
+		 * Currently we only support the MC16/32 (MCA ID 002d)
+		 */
+		slot = mca_find_unused_adapter(0x002d, slot);
+		if (slot == MCA_NOTFOUND)
+			break;
+
+		/*
+		 * If we get here, we have an adapter.
+		 */
+		if (versionprinted++ == 0)
+			printk("%s", version);
+
+		if ((dev = init_trdev(NULL, 0))==NULL) {
+			printk("madgemc: unable to allocate dev space\n");
+			return -1;
+		}
+		dev->dma = 0;
+
+		/*
+		 * Fetch MCA config registers
+		 */
+		for(i=0;i<4;i++)
+			posreg[i] = mca_read_stored_pos(slot, i+2);
+		
+		card = kmalloc(sizeof(struct madgemc_card), GFP_KERNEL);
+		if (card==NULL) {
+			printk("madgemc: unable to allocate card struct\n");
+			return -1;
+		}
+		card->dev = dev;
+
+		/*
+		 * Parse configuration information.  This all comes
+		 * directly from the publicly available @002d.ADF.
+		 * Get it from Madge or your local ADF library.
+		 */
+
+		/*
+		 * Base address 
+		 */
+		dev->base_addr = 0x0a20 + 
+			((posreg[2] & MC16_POS2_ADDR2)?0x0400:0) +
+			((posreg[0] & MC16_POS0_ADDR1)?0x1000:0) +
+			((posreg[3] & MC16_POS3_ADDR3)?0x2000:0);
+
+		/*
+		 * Interrupt line
+		 */
+		switch(posreg[0] >> 6) { /* upper two bits */
+		case 0x1: dev->irq = 3; break;
+		case 0x2: dev->irq = 9; break; /* IRQ 2 = IRQ 9 */
+		case 0x3: dev->irq = 10; break;
+		default: dev->irq = 0; break;
+		}
+
+		if (dev->irq == 0) {
+			printk("%s: invalid IRQ\n", dev->name);
+			goto getout;
+		}
+
+		request_region(dev->base_addr, MADGEMC_IO_EXTENT, "madgemc");
+#if 0
+		/* why is this not working? */
+		if (request_region(dev->base_addr, MADGEMC_IO_EXTENT, 
+				   "madgemc")) {
+			printk(KERN_INFO "madgemc: unable to setup Smart MC in slot %d because of I/O base conflict at 0x%04lx\n", slot, dev->base_addr);
+			dev->base_addr += MADGEMC_SIF_OFFSET;
+			goto getout;
+		}
+#endif
+		dev->base_addr += MADGEMC_SIF_OFFSET;
+		
+		/*
+		 * Arbitration Level
+		 */
+		card->arblevel = ((posreg[0] >> 1) & 0x7) + 8;
+
+		/*
+		 * Burst mode and Fairness
+		 */
+		card->burstmode = ((posreg[2] >> 6) & 0x3);
+		card->fairness = ((posreg[2] >> 4) & 0x1);
+
+		/*
+		 * Ring Speed
+		 */
+		if ((posreg[1] >> 2)&0x1)
+			card->ringspeed = 2; /* not selected */
+		else if ((posreg[2] >> 5) & 0x1)
+			card->ringspeed = 1; /* 16Mb */
+		else
+			card->ringspeed = 0; /* 4Mb */
+
+		/* 
+		 * Cable type
+		 */
+		if ((posreg[1] >> 6)&0x1)
+			card->cabletype = 1; /* STP/DB9 */
+		else
+			card->cabletype = 0; /* UTP/RJ-45 */
+
+
+		/* 
+		 * ROM Info. This requires us to actually twiddle
+		 * bits on the card, so we must ensure above that 
+		 * the base address is free of conflict (request_region above).
+		 */
+		madgemc_read_rom(card);
+		
+		if (card->manid != 0x4d) { /* something went wrong */
+			printk(KERN_INFO "%s: Madge MC ROM read failed (unknown manufacturer ID %02x)\n", dev->name, card->manid);
+			goto getout;
+		}
+		
+		if ((card->cardtype != 0x08) && (card->cardtype != 0x0d)) {
+			printk(KERN_INFO "%s: Madge MC ROM read failed (unknown card ID %02x)\n", dev->name, card->cardtype);
+			goto getout;
+		}
+	       
+		/* All cards except Rev 0 and 1 MC16's have 256kb of RAM */
+		if ((card->cardtype == 0x08) && (card->cardrev <= 0x01))
+			card->ramsize = 128;
+		else
+			card->ramsize = 256;
+
+		printk("%s: %s Rev %d at 0x%04lx IRQ %d\n", 
+		       dev->name, 
+		       (card->cardtype == 0x08)?MADGEMC16_CARDNAME:
+		       MADGEMC32_CARDNAME, card->cardrev, 
+		       dev->base_addr, dev->irq);
+
+		if (card->cardtype == 0x0d)
+			printk("%s:     Warning: MC32 support is experimental and highly untested\n", dev->name);
+		
+		if (card->ringspeed==2) { /* Unknown */
+			printk("%s:     Warning: Ring speed not set in POS -- Please run the reference disk and set it!\n", dev->name);
+			card->ringspeed = 1; /* default to 16mb */
+		}
+		
+		printk("%s:     RAM Size: %dKB\n", dev->name, card->ramsize);
+
+		printk("%s:     Ring Speed: %dMb/sec on %s\n", dev->name, 
+		       (card->ringspeed)?16:4, 
+		       card->cabletype?"STP/DB9":"UTP/RJ-45");
+		printk("%s:     Arbitration Level: %d\n", dev->name, 
+		       card->arblevel);
+
+		printk("%s:     Burst Mode: ", dev->name);
+		switch(card->burstmode) {
+		case 0: printk("Cycle steal"); break;
+		case 1: printk("Limited burst"); break;
+		case 2: printk("Delayed release"); break;
+		case 3: printk("Immediate release"); break;
+		}
+		printk(" (%s)\n", (card->fairness)?"Unfair":"Fair");
+
+
+		/* 
+		 * Enable SIF before we assign the interrupt handler,
+		 * just in case we get spurious interrupts that need
+		 * handling.
+		 */ 
+		outb(0, dev->base_addr + MC_CONTROL_REG0); /* sanity */
+		madgemc_setsifsel(dev, 1);
+		if(request_irq(dev->irq, madgemc_interrupt, SA_SHIRQ,
+			       "madgemc", dev)) 
+			goto getout;
+		
+		madgemc_chipset_init(dev); /* enables interrupts! */
+		madgemc_setcabletype(dev, card->cabletype);
+
+		/* Setup MCA structures */
+		mca_set_adapter_name(slot, (card->cardtype == 0x08)?MADGEMC16_CARDNAME:MADGEMC32_CARDNAME);
+		mca_set_adapter_procfn(slot, madgemc_mcaproc, dev);
+		mca_mark_as_used(slot);
+
+		printk("%s:     Ring Station Address: ", dev->name);
+		printk("%2.2x", dev->dev_addr[0]);
+		for (i = 1; i < 6; i++)
+			printk(":%2.2x", dev->dev_addr[i]);
+		printk("\n");
+
+		if (tmsdev_init(dev)) {
+			printk("%s: unable to get memory for dev->priv.\n", 
+			       dev->name);
+			return -1;
+		}
+		tp = (struct net_local *)dev->priv;
+
+		/* 
+		 * The MC16 is physically a 32bit card.  However, Madge
+		 * insists on calling it 16bit, so I'll assume here that
+		 * they know what they're talking about.  Cut off DMA
+		 * at 16mb.
+		 */
+		tp->dmalimit = ISA_MAX_ADDRESS; /* XXX: ?? */
+		tp->setnselout = madgemc_setnselout_pins;
+		tp->sifwriteb = madgemc_sifwriteb;
+		tp->sifreadb = madgemc_sifreadb;
+		tp->sifwritew = madgemc_sifwritew;
+		tp->sifreadw = madgemc_sifreadw;
+		tp->DataRate = (card->ringspeed)?SPEED_16:SPEED_4;
+
+		memcpy(tp->ProductID, "Madge MCA 16/4    ", PROD_ID_SIZE + 1);
+
+		dev->open = madgemc_open;
+		dev->stop = madgemc_close;
+		
+		if (register_trdev(dev) == 0) {
+			/* Enlist in the card list */
+			card->next = madgemc_card_list;
+			madgemc_card_list = card;
+		} else {
+			printk("madgemc: register_trdev() returned non-zero.\n");
+			
+			kfree(card);
+			kfree(dev->priv);
+			kfree(dev);
+			return -1;
+		}
+
+		slot++;
+		continue; /* successful, try to find another */
+		
+	getout:
+		release_region(dev->base_addr-MADGEMC_SIF_OFFSET, 
+			       MADGEMC_IO_EXTENT); 
+		kfree(card);
+		kfree(dev); /* release_trdev? */
+		slot++;
+	}
+
+	if (madgemc_card_list)
+		return 0;
+	return -1;
+}
+
+/*
+ * Handle interrupts generated by the card
+ *
+ * The MicroChannel Madge cards need slightly more handling
+ * after an interrupt than other TMS380 cards do.
+ *
+ * First we must make sure it was this card that generated the
+ * interrupt (since interrupt sharing is allowed).  Then,
+ * because we're using level-triggered interrupts (as is
+ * standard on MCA), we must toggle the interrupt line
+ * on the card in order to claim and acknowledge the interrupt.
+ * Once that is done, the interrupt should be handlable in
+ * the normal tms380tr_interrupt() routine.
+ *
+ * There's two ways we can check to see if the interrupt is ours,
+ * both with their own disadvantages...
+ *
+ * 1)  	Read in the SIFSTS register from the TMS controller.  This
+ *	is guarenteed to be accurate, however, there's a fairly
+ *	large performance penalty for doing so: the Madge chips
+ *	must request the register from the Eagle, the Eagle must
+ *	read them from its internal bus, and then take the route
+ *	back out again, for a 16bit read.  
+ *
+ * 2)	Use the MC_CONTROL_REG0_SINTR bit from the Madge ASICs.
+ *	The major disadvantage here is that the accuracy of the
+ *	bit is in question.  However, it cuts out the extra read
+ *	cycles it takes to read the Eagle's SIF, as its only an
+ *	8bit read, and theoretically the Madge bit is directly
+ *	connected to the interrupt latch coming out of the Eagle
+ *	hardware (that statement is not verified).  
+ *
+ * I can't determine which of these methods has the best win.  For now,
+ * we make a compromise.  Use the Madge way for the first interrupt,
+ * which should be the fast-path, and then once we hit the first 
+ * interrupt, keep on trying using the SIF method until we've
+ * exhausted all contiguous interrupts.
+ *
+ */
+static void madgemc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int pending,reg1;
+	struct net_device *dev;
+
+	if (!dev_id) {
+		printk("madgemc_interrupt: was not passed a dev_id!\n");
+		return;
+	}
+
+	dev = (struct net_device *)dev_id;
+
+	/* Make sure its really us. -- the Madge way */
+	pending = inb(dev->base_addr + MC_CONTROL_REG0);
+	if (!(pending & MC_CONTROL_REG0_SINTR))
+		return; /* not our interrupt */
+
+	/*
+	 * Since we're level-triggered, we may miss the rising edge
+	 * of the next interrupt while we're off handling this one,
+	 * so keep checking until the SIF verifies that it has nothing
+	 * left for us to do.
+	 */
+	pending = STS_SYSTEM_IRQ;
+	do {
+		if (pending & STS_SYSTEM_IRQ) {
+
+			/* Toggle the interrupt to reset the latch on card */
+			reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
+			outb(reg1 ^ MC_CONTROL_REG1_SINTEN, 
+			     dev->base_addr + MC_CONTROL_REG1);
+			outb(reg1, dev->base_addr + MC_CONTROL_REG1);
+
+			/* Continue handling as normal */
+			tms380tr_interrupt(irq, dev_id, regs);
+
+			pending = SIFREADW(SIFSTS); /* restart - the SIF way */
+
+		} else
+			return; 
+	} while (1);
+
+	return; /* not reachable */
+}
+
+/*
+ * Set the card to the prefered ring speed.
+ *
+ * Unlike newer cards, the MC16/32 have their speed selection
+ * circuit connected to the Madge ASICs and not to the TMS380
+ * NSELOUT pins. Set the ASIC bits correctly here, and return 
+ * zero to leave the TMS NSELOUT bits unaffected.
+ *
+ */
+unsigned short madgemc_setnselout_pins(struct net_device *dev)
+{
+	unsigned char reg1;
+	struct net_local *tp = (struct net_local *)dev->priv;
+	
+	reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
+
+	if(tp->DataRate == SPEED_16)
+		reg1 |= MC_CONTROL_REG1_SPEED_SEL; /* add for 16mb */
+	else if (reg1 & MC_CONTROL_REG1_SPEED_SEL)
+		reg1 ^= MC_CONTROL_REG1_SPEED_SEL; /* remove for 4mb */
+	outb(reg1, dev->base_addr + MC_CONTROL_REG1);
+
+	return 0; /* no change */
+}
+
+/*
+ * Set the register page.  This equates to the SRSX line
+ * on the TMS380Cx6.
+ *
+ * Register selection is normally done via three contiguous
+ * bits.  However, some boards (such as the MC16/32) use only
+ * two bits, plus a seperate bit in the glue chip.  This
+ * sets the SRSX bit (the top bit).  See page 4-17 in the
+ * Yellow Book for which registers are affected.
+ *
+ */
+static void madgemc_setregpage(struct net_device *dev, int page)
+{	
+	static int reg1 = 0;
+
+	reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
+	if ((page == 0) && (reg1 & MC_CONTROL_REG1_SRSX)) {
+		outb(reg1 ^ MC_CONTROL_REG1_SRSX, 
+		     dev->base_addr + MC_CONTROL_REG1);
+	}
+	else if (page == 1) {
+		outb(reg1 | MC_CONTROL_REG1_SRSX, 
+		     dev->base_addr + MC_CONTROL_REG1);
+	}
+	reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
+
+	return;
+}
+
+/*
+ * The SIF registers are not mapped into register space by default
+ * Set this to 1 to map them, 0 to map the BIA ROM.
+ *
+ */
+static void madgemc_setsifsel(struct net_device *dev, int val)
+{
+	unsigned int reg0;
+
+	reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
+	if ((val == 0) && (reg0 & MC_CONTROL_REG0_SIFSEL)) {
+		outb(reg0 ^ MC_CONTROL_REG0_SIFSEL, 
+		     dev->base_addr + MC_CONTROL_REG0);
+	} else if (val == 1) {
+		outb(reg0 | MC_CONTROL_REG0_SIFSEL, 
+		     dev->base_addr + MC_CONTROL_REG0);
+	}	
+	reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
+
+	return;
+}
+
+/*
+ * Enable SIF interrupts
+ *
+ * This does not enable interrupts in the SIF, but rather
+ * enables SIF interrupts to be passed onto the host.
+ *
+ */
+static void madgemc_setint(struct net_device *dev, int val)
+{
+	unsigned int reg1;
+
+	reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
+	if ((val == 0) && (reg1 & MC_CONTROL_REG1_SINTEN)) {
+		outb(reg1 ^ MC_CONTROL_REG1_SINTEN, 
+		     dev->base_addr + MC_CONTROL_REG1);
+	} else if (val == 1) {
+		outb(reg1 | MC_CONTROL_REG1_SINTEN, 
+		     dev->base_addr + MC_CONTROL_REG1);
+	}
+
+	return;
+}
+
+/*
+ * Cable type is set via control register 7. Bit zero high
+ * for UTP, low for STP.
+ */
+static void madgemc_setcabletype(struct net_device *dev, int type)
+{
+	outb((type==0)?MC_CONTROL_REG7_CABLEUTP:MC_CONTROL_REG7_CABLESTP,
+	     dev->base_addr + MC_CONTROL_REG7);
+}
+
+/*
+ * Enable the functions of the Madge chipset needed for
+ * full working order. 
+ */
+static int madgemc_chipset_init(struct net_device *dev)
+{
+	outb(0, dev->base_addr + MC_CONTROL_REG1); /* pull SRESET low */
+	tms380tr_wait(100); /* wait for card to reset */
+
+	/* bring back into normal operating mode */
+	outb(MC_CONTROL_REG1_NSRESET, dev->base_addr + MC_CONTROL_REG1);
+
+	/* map SIF registers */
+	madgemc_setsifsel(dev, 1);
+
+	/* enable SIF interrupts */
+	madgemc_setint(dev, 1); 
+
+	return 0;
+}
+
+/*
+ * Disable the board, and put back into power-up state.
+ */
+void madgemc_chipset_close(struct net_device *dev)
+{
+	/* disable interrupts */
+	madgemc_setint(dev, 0);
+	/* unmap SIF registers */
+	madgemc_setsifsel(dev, 0);
+
+	return;
+}
+
+/*
+ * Read the card type (MC16 or MC32) from the card.
+ *
+ * The configuration registers are stored in two seperate
+ * pages.  Pages are flipped by clearing bit 3 of CONTROL_REG0 (PAGE)
+ * for page zero, or setting bit 3 for page one.
+ *
+ * Page zero contains the following data:
+ *	Byte 0: Manufacturer ID (0x4D -- ASCII "M")
+ *	Byte 1: Card type:
+ *			0x08 for MC16
+ *			0x0D for MC32
+ *	Byte 2: Card revision
+ *	Byte 3: Mirror of POS config register 0
+ *	Byte 4: Mirror of POS 1
+ *	Byte 5: Mirror of POS 2
+ *
+ * Page one contains the following data:
+ *	Byte 0: Unused
+ *	Byte 1-6: BIA, MSB to LSB.
+ *
+ * Note that to read the BIA, we must unmap the SIF registers
+ * by clearing bit 2 of CONTROL_REG0 (SIFSEL), as the data
+ * will reside in the same logical location.  For this reason,
+ * _never_ read the BIA while the Eagle processor is running!
+ * The SIF will be completely inaccessible until the BIA operation
+ * is complete.
+ *
+ */
+static void madgemc_read_rom(struct madgemc_card *card)
+{
+	unsigned long ioaddr;
+	unsigned char reg0, reg1, tmpreg0, i;
+
+	ioaddr = card->dev->base_addr;
+
+	reg0 = inb(ioaddr + MC_CONTROL_REG0);
+	reg1 = inb(ioaddr + MC_CONTROL_REG1);
+
+	/* Switch to page zero and unmap SIF */
+	tmpreg0 = reg0 & ~(MC_CONTROL_REG0_PAGE + MC_CONTROL_REG0_SIFSEL);
+	outb(tmpreg0, ioaddr + MC_CONTROL_REG0);
+	
+	card->manid = inb(ioaddr + MC_ROM_MANUFACTURERID);
+	card->cardtype = inb(ioaddr + MC_ROM_ADAPTERID);
+	card->cardrev = inb(ioaddr + MC_ROM_REVISION);
+
+	/* Switch to rom page one */
+	outb(tmpreg0 | MC_CONTROL_REG0_PAGE, ioaddr + MC_CONTROL_REG0);
+
+	/* Read BIA */
+	card->dev->addr_len = 6;
+	for (i = 0; i < 6; i++)
+		card->dev->dev_addr[i] = inb(ioaddr + MC_ROM_BIA_START + i);
+	
+	/* Restore original register values */
+	outb(reg0, ioaddr + MC_CONTROL_REG0);
+	outb(reg1, ioaddr + MC_CONTROL_REG1);
+	
+	return;
+}
+
+static int madgemc_open(struct net_device *dev)
+{  
+	/*
+	 * Go ahead and reinitialize the chipset again, just to 
+	 * make sure we didn't get left in a bad state.
+	 */
+	madgemc_chipset_init(dev);
+	tms380tr_open(dev);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int madgemc_close(struct net_device *dev)
+{
+	tms380tr_close(dev);
+	madgemc_chipset_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+/*
+ * Give some details available from /proc/mca/slotX
+ */
+static int madgemc_mcaproc(char *buf, int slot, void *d) 
+{	
+	struct net_device *dev = (struct net_device *)d;
+	struct madgemc_card *curcard = madgemc_card_list;
+	int len = 0;
+	
+	while (curcard) { /* search for card struct */
+		if (curcard->dev == dev)
+			break;
+		curcard = curcard->next;
+	}
+	len += sprintf(buf+len, "-------\n");
+	if (curcard) {
+		struct net_local *tp = (struct net_local *)dev->priv;
+		int i;
+		
+		len += sprintf(buf+len, "Card Revision: %d\n", curcard->cardrev);
+		len += sprintf(buf+len, "RAM Size: %dkb\n", curcard->ramsize);
+		len += sprintf(buf+len, "Cable type: %s\n", (curcard->cabletype)?"STP/DB9":"UTP/RJ-45");
+		len += sprintf(buf+len, "Configured ring speed: %dMb/sec\n", (curcard->ringspeed)?16:4);
+		len += sprintf(buf+len, "Running ring speed: %dMb/sec\n", (tp->DataRate==SPEED_16)?16:4);
+		len += sprintf(buf+len, "Device: %s\n", dev->name);
+		len += sprintf(buf+len, "IO Port: 0x%04lx\n", dev->base_addr);
+		len += sprintf(buf+len, "IRQ: %d\n", dev->irq);
+		len += sprintf(buf+len, "Arbitration Level: %d\n", curcard->arblevel);
+		len += sprintf(buf+len, "Burst Mode: ");
+		switch(curcard->burstmode) {
+		case 0: len += sprintf(buf+len, "Cycle steal"); break;
+		case 1: len += sprintf(buf+len, "Limited burst"); break;
+		case 2: len += sprintf(buf+len, "Delayed release"); break;
+		case 3: len += sprintf(buf+len, "Immediate release"); break;
+		}
+		len += sprintf(buf+len, " (%s)\n", (curcard->fairness)?"Unfair":"Fair");
+		
+		len += sprintf(buf+len, "Ring Station Address: ");
+		len += sprintf(buf+len, "%2.2x", dev->dev_addr[0]);
+		for (i = 1; i < 6; i++)
+			len += sprintf(buf+len, " %2.2x", dev->dev_addr[i]);
+		len += sprintf(buf+len, "\n");
+	} else 
+		len += sprintf(buf+len, "Card not configured\n");
+
+	return len;
+}
+
+#ifdef MODULE
+
+int init_module(void)
+{
+	/* Probe for cards. */
+	if (madgemc_probe()) {
+		printk(KERN_NOTICE "madgemc.c: No cards found.\n");
+	}
+	/* lock_tms380_module(); */
+	return (0);
+}
+
+void cleanup_module(void)
+{
+	struct net_device *dev;
+	struct madgemc_card *this_card;
+	
+	while (madgemc_card_list) {
+		dev = madgemc_card_list->dev;
+		unregister_trdev(dev);
+		release_region(dev->base_addr-MADGEMC_SIF_OFFSET, MADGEMC_IO_EXTENT);
+		free_irq(dev->irq, dev);
+		kfree(dev->priv);
+		kfree(dev);
+		this_card = madgemc_card_list;
+		madgemc_card_list = this_card->next;
+		kfree(this_card);
+	}
+	/* unlock_tms380_module(); */
+}
+#endif /* MODULE */
+
+
+/*
+ * Local variables:
+ *  compile-command: "gcc -DMODVERSIONS  -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c madgemc.c"
+ *  alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c madgemc.c"
+ *  c-set-style "K&R"
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)