patch-2.4.2 linux/drivers/net/tokenring/tmsisa.c

• Lines: 465
• Date: Fri Feb 16 16:02:36 2001
• Orig file: v2.4.1/linux/drivers/net/tokenring/tmsisa.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/drivers/net/tokenring/tmsisa.c linux/drivers/net/tokenring/tmsisa.c
@@ -0,0 +1,464 @@
+/*
+ *  tmsisa.c: A generic network driver for TMS380-based ISA token ring cards.
+ *
+ *  Based on tmspci written 1999 by Adam Fritzler
+ *  
+ *  Written 2000 by Jochen Friedrich
+ *  Dedicated to my girlfriend Steffi Bopp
+ *
+ *  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:
+ *	- SysKonnect TR4/16(+) ISA	(SK-4190)
+ *
+ *  Maintainer(s):
+ *    AF        Adam Fritzler           mid@auk.cx
+ *    JF	Jochen Friedrich	jochen@scram.de
+ *
+ *  TODO:
+ *	1. Add support for Proteon TR ISA adapters (1392, 1392+)
+ */
+static const char *version = "tmsisa.c: v1.00 14/01/2001 by Jochen Friedrich\n";
+
+#include <linux/module.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 <asm/pci.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+#include "tms380tr.h"
+
+#define TMS_ISA_IO_EXTENT 32
+
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int portlist[] __initdata = {
+	0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,// SK
+	0
+};
+
+/* A zero-terminated list of IRQs to be probed. 
+ * Used again after initial probe for sktr_chipset_init, called from sktr_open.
+ */
+static unsigned short irqlist[] = {
+	3, 5, 9, 10, 11, 12, 15,
+	0
+};
+
+/* A zero-terminated list of DMAs to be probed. */
+static int dmalist[] __initdata = {
+	5, 6, 7,
+	0
+};
+
+static char *isa_cardname = "SK NET TR 4/16 ISA\0";
+
+int tms_isa_probe(struct net_device *dev);
+static int tms_isa_open(struct net_device *dev);
+static int tms_isa_close(struct net_device *dev);
+static void tms_isa_read_eeprom(struct net_device *dev);
+static unsigned short tms_isa_setnselout_pins(struct net_device *dev);
+
+static unsigned short tms_isa_sifreadb(struct net_device *dev, unsigned short reg)
+{
+	return inb(dev->base_addr + reg);
+}
+
+static unsigned short tms_isa_sifreadw(struct net_device *dev, unsigned short reg)
+{
+	return inw(dev->base_addr + reg);
+}
+
+static void tms_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outb(val, dev->base_addr + reg);
+}
+
+static void tms_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outw(val, dev->base_addr + reg);
+}
+
+struct tms_isa_card {
+	struct net_device *dev;
+	struct tms_isa_card *next;
+};
+
+static struct tms_isa_card *tms_isa_card_list = NULL;
+
+static int __init tms_isa_probe1(int ioaddr)
+{
+	unsigned char old, chk1, chk2;
+
+	old = inb(ioaddr + SIFADR);	/* Get the old SIFADR value */
+
+	chk1 = 0;	/* Begin with check value 0 */
+	do {
+		/* Write new SIFADR value */
+		outb(chk1, ioaddr + SIFADR);
+
+		/* Read, invert and write */
+		chk2 = inb(ioaddr + SIFADD);
+		chk2 ^= 0x0FE;
+		outb(chk2, ioaddr + SIFADR);
+
+		/* Read, invert and compare */
+		chk2 = inb(ioaddr + SIFADD);
+		chk2 ^= 0x0FE;
+
+		if(chk1 != chk2)
+			return (-1);	/* No adapter */
+
+		chk1 -= 2;
+	} while(chk1 != 0);	/* Repeat 128 times (all byte values) */
+
+    	/* Restore the SIFADR value */
+	outb(old, ioaddr + SIFADR);
+
+	return (0);
+}
+
+int __init tms_isa_probe(struct net_device *dev)
+{
+        static int versionprinted = 0;
+	struct net_local *tp;
+	int j;
+	struct tms_isa_card *card;
+
+	if(check_region(dev->base_addr, TMS_ISA_IO_EXTENT))
+		return -1;
+
+	if(tms_isa_probe1(dev->base_addr))
+		return -1;
+   
+	if (versionprinted++ == 0)
+		printk("%s", version);
+ 
+	/* At this point we have found a valid card. */
+    
+	if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname))
+		return -1;
+
+	if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
+       	{
+		release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+		return -1;
+	}
+
+	dev->base_addr &= ~3; 
+		
+	tms_isa_read_eeprom(dev);
+
+	printk("%s:    Ring Station Address: ", dev->name);
+	printk("%2.2x", dev->dev_addr[0]);
+	for (j = 1; j < 6; j++)
+		printk(":%2.2x", dev->dev_addr[j]);
+	printk("\n");
+		
+	tp = (struct net_local *)dev->priv;
+	tp->setnselout = tms_isa_setnselout_pins;
+		
+	tp->sifreadb = tms_isa_sifreadb;
+	tp->sifreadw = tms_isa_sifreadw;
+	tp->sifwriteb = tms_isa_sifwriteb;
+	tp->sifwritew = tms_isa_sifwritew;
+	
+	memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1);
+
+	tp->tmspriv = NULL;
+
+	dev->open = tms_isa_open;
+	dev->stop = tms_isa_close;
+
+	if (dev->irq == 0)
+	{
+		for(j = 0; irqlist[j] != 0; j++)
+		{
+			dev->irq = irqlist[j];
+			if (!request_irq(dev->irq, tms380tr_interrupt, 0, 
+				isa_cardname, dev))
+				break;
+                }
+		
+                if(irqlist[j] == 0)
+                {
+                        printk("%s: AutoSelect no IRQ available\n", dev->name);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			tmsdev_term(dev);
+			return -1;
+		}
+	}
+	else
+	{
+		for(j = 0; irqlist[j] != 0; j++)
+			if (irqlist[j] == dev->irq)
+				break;
+		if (irqlist[j] == 0)
+		{
+			printk("%s: Illegal IRQ %d specified\n",
+				dev->name, dev->irq);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			tmsdev_term(dev);
+			return -1;
+		}
+		if (request_irq(dev->irq, tms380tr_interrupt, 0, 
+			isa_cardname, dev))
+		{
+                        printk("%s: Selected IRQ %d not available\n", 
+				dev->name, dev->irq);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			tmsdev_term(dev);
+			return -1;
+		}
+	}
+
+	if (dev->dma == 0)
+	{
+		for(j = 0; dmalist[j] != 0; j++)
+		{
+			dev->dma = dmalist[j];
+                        if (!request_dma(dev->dma, isa_cardname))
+				break;
+		}
+
+		if(dmalist[j] == 0)
+		{
+			printk("%s: AutoSelect no DMA available\n", dev->name);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			free_irq(dev->irq, dev);
+			tmsdev_term(dev);
+			return -1;
+		}
+	}
+	else
+	{
+		for(j = 0; dmalist[j] != 0; j++)
+			if (dmalist[j] == dev->dma)
+				break;
+		if (dmalist[j] == 0)
+		{
+                        printk("%s: Illegal DMA %d specified\n", 
+				dev->name, dev->dma);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			free_irq(dev->irq, dev);
+			tmsdev_term(dev);
+			return -1;
+		}
+		if (request_dma(dev->dma, isa_cardname))
+		{
+                        printk("%s: Selected DMA %d not available\n", 
+				dev->name, dev->dma);
+			release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+			free_irq(dev->irq, dev);
+			tmsdev_term(dev);
+			return -1;
+		}
+	}
+
+	printk("%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
+	       dev->name, dev->base_addr, dev->irq, dev->dma);
+		
+	if (register_trdev(dev) == 0) 
+	{
+		/* Enlist in the card list */
+		card = kmalloc(sizeof(struct tms_isa_card), GFP_KERNEL);
+		card->next = tms_isa_card_list;
+		tms_isa_card_list = card;
+		card->dev = dev;
+	} 
+	else 
+	{
+		printk("%s: register_trdev() returned non-zero.\n", dev->name);
+		release_region(dev->base_addr, TMS_ISA_IO_EXTENT); 
+		free_irq(dev->irq, dev);
+		free_dma(dev->dma);
+		tmsdev_term(dev);
+		return -1;
+	}
+	
+	return 0;
+}
+
+/*
+ * Reads MAC address from adapter RAM, which should've read it from
+ * the onboard ROM.  
+ *
+ * Calling this on a board that does not support it can be a very
+ * dangerous thing.  The Madge board, for instance, will lock your
+ * machine hard when this is called.  Luckily, its supported in a
+ * seperate driver.  --ASF
+ */
+static void tms_isa_read_eeprom(struct net_device *dev)
+{
+	int i;
+	
+	/* Address: 0000:0000 */
+	tms_isa_sifwritew(dev, 0, SIFADX);
+	tms_isa_sifwritew(dev, 0, SIFADR);	
+	
+	/* Read six byte MAC address data */
+	dev->addr_len = 6;
+	for(i = 0; i < 6; i++)
+		dev->dev_addr[i] = tms_isa_sifreadw(dev, SIFINC) >> 8;
+}
+
+unsigned short tms_isa_setnselout_pins(struct net_device *dev)
+{
+	return 0;
+}
+
+static int tms_isa_open(struct net_device *dev)
+{  
+	struct net_local *tp = (struct net_local *)dev->priv;
+	unsigned short val = 0;
+	unsigned short oldval;
+	int i;
+
+	val = 0;
+	for(i = 0; irqlist[i] != 0; i++)
+	{
+		if(irqlist[i] == dev->irq)
+			break;
+	}
+
+	val |= CYCLE_TIME << 2;
+	val |= i << 4;
+	i = dev->dma - 5;
+	val |= i;
+	if(tp->DataRate == SPEED_4)
+		val |= LINE_SPEED_BIT;
+	else
+		val &= ~LINE_SPEED_BIT;
+	oldval = tms_isa_sifreadb(dev, POSREG);
+	/* Leave cycle bits alone */
+	oldval |= 0xf3;
+	val &= oldval;
+	tms_isa_sifwriteb(dev, val, POSREG);
+
+	tms380tr_open(dev);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int tms_isa_close(struct net_device *dev)
+{
+	tms380tr_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+#ifdef MODULE
+
+#define ISATR_MAX_ADAPTERS 3
+
+static int io[ISATR_MAX_ADAPTERS];
+static int irq[ISATR_MAX_ADAPTERS];
+static int dma[ISATR_MAX_ADAPTERS];
+
+MODULE_PARM(io, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
+MODULE_PARM(irq, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
+MODULE_PARM(dma, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
+
+int init_module(void)
+{
+	int i, num;
+	struct net_device *dev;
+
+	num = 0;
+	if (io[0]) 
+	{ /* Only probe addresses from command line */
+		for (i = 0; i < ISATR_MAX_ADAPTERS; i++)
+	       	{
+			if (io[i] == 0)
+				continue;
+
+			dev = init_trdev(NULL, 0);
+			if (!dev)
+				return (-ENOMEM);
+		
+			dev->base_addr = io[i];
+			dev->irq       = irq[i];
+			dev->dma       = dma[i];
+
+			if (tms_isa_probe(dev))
+			{
+				unregister_netdev(dev);
+				kfree(dev);
+			}
+			else
+				num++;
+		}
+	}
+       	else
+       	{
+		for(i = 0; portlist[i]; i++)
+		{
+			if (num >= ISATR_MAX_ADAPTERS)
+				continue;
+
+			dev = init_trdev(NULL, 0);
+			if (!dev)
+				return (-ENOMEM);
+		
+			dev->base_addr = portlist[i];
+			dev->irq       = irq[num];
+			dev->dma       = dma[num];
+
+			if (tms_isa_probe(dev))
+			{
+				unregister_netdev(dev);
+				kfree(dev);
+			}
+			else
+				num++;
+		}
+	}
+	printk(KERN_NOTICE "tmsisa.c: %d cards found.\n", num);
+	/* Probe for cards. */
+	if (num == 0) {
+		printk(KERN_NOTICE "tmsisa.c: No cards found.\n");
+	}
+	return (0);
+}
+
+void cleanup_module(void)
+{
+	struct net_device *dev;
+	struct tms_isa_card *this_card;
+
+	while (tms_isa_card_list) {
+		dev = tms_isa_card_list->dev;
+		
+		unregister_netdev(dev);
+		release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
+		free_irq(dev->irq, dev);
+		free_dma(dev->dma);
+		tmsdev_term(dev);
+		kfree(dev);
+		this_card = tms_isa_card_list;
+		tms_isa_card_list = this_card->next;
+		kfree(this_card);
+	}
+}
+#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 tmsisa.c"
+ *  alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tmsisa.c"
+ *  c-set-style "K&R"
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */