Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 442 insertions, 0 deletions

diff --git a/drivers/net/tokenring/skisa.c b/drivers/net/tokenring/skisa.c
new file mode 100644
index 000000000000..3fab54a26466
--- /dev/null
+++ b/drivers/net/tokenring/skisa.c
@@ -0,0 +1,442 @@
+/*
+ *  skisa.c: A network driver for SK-NET 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 General 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
+ *
+ *  Modification History:
+ *	14-Jan-01	JF	Created
+ *	28-Oct-02	JF	Fixed probe of card for static compilation.
+ *				Fixed module init to not make hotplug go wild.
+ *	09-Nov-02	JF	Fixed early bail out on out of memory
+ *				situations if multiple cards are found.
+ *				Cleaned up some unnecessary console SPAM.
+ *	09-Dec-02	JF	Fixed module reference counting.
+ *	02-Jan-03	JF	Renamed to skisa.c
+ *
+ */
+static const char version[] = "skisa.c: v1.03 09/12/2002 by Jochen Friedrich\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/pci.h>
+#include <asm/dma.h>
+
+#include "tms380tr.h"
+
+#define SK_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 const 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";
+
+struct net_device *sk_isa_probe(int unit);
+static int sk_isa_open(struct net_device *dev);
+static void sk_isa_read_eeprom(struct net_device *dev);
+static unsigned short sk_isa_setnselout_pins(struct net_device *dev);
+
+static unsigned short sk_isa_sifreadb(struct net_device *dev, unsigned short reg)
+{
+	return inb(dev->base_addr + reg);
+}
+
+static unsigned short sk_isa_sifreadw(struct net_device *dev, unsigned short reg)
+{
+	return inw(dev->base_addr + reg);
+}
+
+static void sk_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outb(val, dev->base_addr + reg);
+}
+
+static void sk_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outw(val, dev->base_addr + reg);
+}
+
+
+static int __init sk_isa_probe1(struct net_device *dev, int ioaddr)
+{
+	unsigned char old, chk1, chk2;
+
+	if (!request_region(ioaddr, SK_ISA_IO_EXTENT, isa_cardname))
+		return -ENODEV;
+
+	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) {
+			release_region(ioaddr, SK_ISA_IO_EXTENT);
+			return -ENODEV;
+		}
+
+		chk1 -= 2;
+	} while(chk1 != 0);	/* Repeat 128 times (all byte values) */
+
+    	/* Restore the SIFADR value */
+	outb(old, ioaddr + SIFADR);
+
+	dev->base_addr = ioaddr;
+	return 0;
+}
+
+static int __init setup_card(struct net_device *dev)
+{
+	struct net_local *tp;
+        static int versionprinted;
+	const unsigned *port;
+	int j, err = 0;
+
+	if (!dev)
+		return -ENOMEM;
+
+	SET_MODULE_OWNER(dev);
+	if (dev->base_addr)	/* probe specific location */
+		err = sk_isa_probe1(dev, dev->base_addr);
+	else {
+		for (port = portlist; *port; port++) {
+			err = sk_isa_probe1(dev, *port);
+			if (!err)
+				break;
+		}
+	}
+	if (err)
+		goto out4;
+
+	/* At this point we have found a valid card. */
+
+	if (versionprinted++ == 0)
+		printk(KERN_DEBUG "%s", version);
+
+	err = -EIO;
+	if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
+		goto out4;
+
+	dev->base_addr &= ~3; 
+		
+	sk_isa_read_eeprom(dev);
+
+	printk(KERN_DEBUG "%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 = netdev_priv(dev);
+	tp->setnselout = sk_isa_setnselout_pins;
+		
+	tp->sifreadb = sk_isa_sifreadb;
+	tp->sifreadw = sk_isa_sifreadw;
+	tp->sifwriteb = sk_isa_sifwriteb;
+	tp->sifwritew = sk_isa_sifwritew;
+	
+	memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1);
+
+	tp->tmspriv = NULL;
+
+	dev->open = sk_isa_open;
+	dev->stop = tms380tr_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(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
+			goto out3;
+		}
+	}
+	else
+	{
+		for(j = 0; irqlist[j] != 0; j++)
+			if (irqlist[j] == dev->irq)
+				break;
+		if (irqlist[j] == 0)
+		{
+			printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
+				dev->name, dev->irq);
+			goto out3;
+		}
+		if (request_irq(dev->irq, tms380tr_interrupt, 0, 
+			isa_cardname, dev))
+		{
+                        printk(KERN_INFO "%s: Selected IRQ %d not available\n", 
+				dev->name, dev->irq);
+			goto out3;
+		}
+	}
+
+	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(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
+			goto out2;
+		}
+	}
+	else
+	{
+		for(j = 0; dmalist[j] != 0; j++)
+			if (dmalist[j] == dev->dma)
+				break;
+		if (dmalist[j] == 0)
+		{
+                        printk(KERN_INFO "%s: Illegal DMA %d specified\n", 
+				dev->name, dev->dma);
+			goto out2;
+		}
+		if (request_dma(dev->dma, isa_cardname))
+		{
+                        printk(KERN_INFO "%s: Selected DMA %d not available\n", 
+				dev->name, dev->dma);
+			goto out2;
+		}
+	}
+
+	printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
+	       dev->name, dev->base_addr, dev->irq, dev->dma);
+		
+	err = register_netdev(dev);
+	if (err)
+		goto out;
+
+	return 0;
+out:
+	free_dma(dev->dma);
+out2:
+	free_irq(dev->irq, dev);
+out3:
+	tmsdev_term(dev);
+out4:
+	release_region(dev->base_addr, SK_ISA_IO_EXTENT); 
+	return err;
+}
+
+struct net_device * __init sk_isa_probe(int unit)
+{
+	struct net_device *dev = alloc_trdev(sizeof(struct net_local));
+	int err = 0;
+
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	if (unit >= 0) {
+		sprintf(dev->name, "tr%d", unit);
+		netdev_boot_setup_check(dev);
+	}
+
+	err = setup_card(dev);
+	if (err)
+		goto out;
+
+	return dev;
+out:
+	free_netdev(dev);
+	return ERR_PTR(err);
+}
+
+/*
+ * 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
+ * separate driver.  --ASF
+ */
+static void sk_isa_read_eeprom(struct net_device *dev)
+{
+	int i;
+	
+	/* Address: 0000:0000 */
+	sk_isa_sifwritew(dev, 0, SIFADX);
+	sk_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] = sk_isa_sifreadw(dev, SIFINC) >> 8;
+}
+
+unsigned short sk_isa_setnselout_pins(struct net_device *dev)
+{
+	return 0;
+}
+
+static int sk_isa_open(struct net_device *dev)
+{  
+	struct net_local *tp = netdev_priv(dev);
+	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 = sk_isa_sifreadb(dev, POSREG);
+	/* Leave cycle bits alone */
+	oldval |= 0xf3;
+	val &= oldval;
+	sk_isa_sifwriteb(dev, val, POSREG);
+
+	return tms380tr_open(dev);
+}
+
+#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_LICENSE("GPL");
+
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(dma, int, NULL, 0);
+
+static struct net_device *sk_isa_dev[ISATR_MAX_ADAPTERS];
+
+int init_module(void)
+{
+	struct net_device *dev;
+	int i, num = 0, err = 0;
+
+	for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
+		dev = alloc_trdev(sizeof(struct net_local));
+		if (!dev)
+			continue;
+
+		dev->base_addr = io[i];
+		dev->irq = irq[i];
+		dev->dma = dma[i];
+		err = setup_card(dev);
+
+		if (!err) {
+			sk_isa_dev[i] = dev;
+			++num;
+		} else {
+			free_netdev(dev);
+		}
+	}
+
+	printk(KERN_NOTICE "skisa.c: %d cards found.\n", num);
+	/* Probe for cards. */
+	if (num == 0) {
+		printk(KERN_NOTICE "skisa.c: No cards found.\n");
+		return (-ENODEV);
+	}
+	return (0);
+}
+
+void cleanup_module(void)
+{
+	int i;
+
+	for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
+		struct net_device *dev = sk_isa_dev[i];
+
+		if (!dev) 
+			continue;
+		
+		unregister_netdev(dev);
+		release_region(dev->base_addr, SK_ISA_IO_EXTENT);
+		free_irq(dev->irq, dev);
+		free_dma(dev->dma);
+		tmsdev_term(dev);
+		free_netdev(dev);
+	}
+}
+#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 skisa.c"
+ *  alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c skisa.c"
+ *  c-set-style "K&R"
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */