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

• Lines: 337
• Date: Wed Jan 26 13:16:05 2000
• Orig file: v2.3.40/linux/drivers/net/tokenring/tmspci.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.40/linux/drivers/net/tokenring/tmspci.c linux/drivers/net/tokenring/tmspci.c
@@ -0,0 +1,336 @@
+/*
+ *  tmspci.c: A generic network driver for TMS380-based PCI token ring cards.
+ *
+ *  Written 1999 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:
+ *	- SysKonnect TR4/16(+) PCI	(SK-4590)
+ *	- SysKonnect TR4/16 PCI		(SK-4591)
+ *      - Compaq TR 4/16 PCI
+ *      - Thomas-Conrad TC4048 4/16 PCI 
+ *      - 3Com 3C339 Token Link Velocity
+ *
+ *  Maintainer(s):
+ *    AF	Adam Fritzler		mid@auk.cx
+ *
+ *  Modification History:
+ *	30-Dec-99	AF	Split off from the tms380tr driver.
+ *	22-Jan-00	AF	Updated to use indirect read/writes
+ *
+ *  TODO:
+ *	1. See if we can use MMIO instead of port accesses
+ *
+ */
+static const char *version = "tmspci.c: v1.01 22/01/2000 by Adam Fritzler\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 <linux/netdevice.h>
+#include <linux/trdevice.h>
+#include "tms380tr.h"
+
+#define TMS_PCI_IO_EXTENT 32
+
+struct cardinfo_table {
+	int vendor_id; /* PCI info */
+	int device_id;
+	int registeroffset; /* SIF offset from dev->base_addr */
+	unsigned char nselout[2]; /* NSELOUT vals for 4mb([0]) and 16mb([1]) */
+	char *name;
+};
+
+struct cardinfo_table probelist[] = {
+	{ 0, 0,
+	  0x0000, {0x00, 0x00}, "Unknown TMS380 Token Ring Adapter"},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TOKENRING, 
+	  0x0000, {0x03, 0x01}, "Compaq 4/16 TR PCI"},
+	{ PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_TR, 
+	  0x0000, {0x03, 0x01}, "SK NET TR 4/16 PCI"},
+	{ PCI_VENDOR_ID_TCONRAD, PCI_DEVICE_ID_TCONRAD_TOKENRING,
+	  0x0000, {0x03, 0x01}, "Thomas-Conrad TC4048 PCI 4/16"},
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C339,
+	  0x0000, {0x03, 0x01}, "3Com Token Link Velocity"},
+	{ 0, 0, 0, {0x00, 0x00}, NULL}
+};
+
+int tms_pci_probe(void);
+static int tms_pci_open(struct net_device *dev);
+static int tms_pci_close(struct net_device *dev);
+static void tms_pci_read_eeprom(struct net_device *dev);
+static unsigned short tms_pci_setnselout_pins(struct net_device *dev);
+
+static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
+{
+	return inb(dev->base_addr + reg);
+}
+
+static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
+{
+	return inw(dev->base_addr + reg);
+}
+
+static void tms_pci_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outb(val, dev->base_addr + reg);
+}
+
+static void tms_pci_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+	outw(val, dev->base_addr + reg);
+}
+
+struct tms_pci_card {
+	struct net_device *dev;
+	struct pci_dev *pci_dev;
+	struct cardinfo_table *cardinfo;
+	struct tms_pci_card *next;
+};
+static struct tms_pci_card *tms_pci_card_list = NULL;
+
+
+struct cardinfo_table * __init tms_pci_getcardinfo(unsigned short vendor, 
+						   unsigned short device)
+{
+	int cur;
+	for (cur = 1; probelist[cur].name != NULL; cur++) {
+		if ((probelist[cur].vendor_id == vendor) && 
+		    (probelist[cur].device_id == device))
+			return &probelist[cur];
+	}
+	
+	return NULL;
+}
+
+int __init tms_pci_probe(void)
+{	
+	static int versionprinted = 0;
+	struct pci_dev *pdev = NULL ; 
+	struct net_device *dev;
+	struct net_local *tp;
+	int i;
+
+	if (!pci_present())
+		return (-1);	/* No PCI present. */
+  
+	while ( (pdev=pci_find_class(PCI_CLASS_NETWORK_TOKEN_RING<<8, pdev))) { 
+		unsigned int pci_irq_line;
+		unsigned long pci_ioaddr;
+		struct tms_pci_card *card;
+		struct cardinfo_table *cardinfo;
+		
+		if ((cardinfo = 
+		     tms_pci_getcardinfo(pdev->vendor, pdev->device)) == NULL)
+			continue;	
+
+		if (versionprinted++ == 0)
+			printk("%s", version);
+
+		pci_enable_device(pdev);
+
+		/* Remove I/O space marker in bit 0. */
+		pci_irq_line = pdev->irq;
+		pci_ioaddr = pdev->resource[0].start ; 
+		
+		if(check_region(pci_ioaddr, TMS_PCI_IO_EXTENT))
+			continue;
+    
+		/* At this point we have found a valid card. */
+    
+		dev = init_trdev(NULL, 0);
+		
+		request_region(pci_ioaddr, TMS_PCI_IO_EXTENT, cardinfo->name);
+		if(request_irq(pdev->irq, tms380tr_interrupt, SA_SHIRQ,
+			       cardinfo->name, dev)) { 
+			release_region(pci_ioaddr, TMS_PCI_IO_EXTENT); 
+			continue; /*return (-ENODEV);*/ /* continue; ?? */
+		}
+
+		/*
+		  if (load_tms380_module("tmspci.c")) {
+		  return 0;
+		  }
+		*/
+
+		pci_ioaddr &= ~3 ; 
+		dev->base_addr	= pci_ioaddr;
+		dev->irq 		= pci_irq_line;
+		dev->dma		= 0;
+		
+		printk("%s: %s\n", dev->name, cardinfo->name);
+		printk("%s:    IO: %#4lx  IRQ: %d\n",
+		       dev->name, dev->base_addr, dev->irq);
+		/*
+		 * Some cards have their TMS SIF registers offset from
+		 * their given base address.  Account for that here. 
+		 */
+		dev->base_addr += cardinfo->registeroffset;
+		
+		tms_pci_read_eeprom(dev);
+
+		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 0;
+		}
+
+		tp = (struct net_local *)dev->priv;
+		tp->dmalimit = 0; /* XXX: should be the max PCI32 DMA max */
+		tp->setnselout = tms_pci_setnselout_pins;
+		
+		tp->sifreadb = tms_pci_sifreadb;
+		tp->sifreadw = tms_pci_sifreadw;
+		tp->sifwriteb = tms_pci_sifwriteb;
+		tp->sifwritew = tms_pci_sifwritew;
+		
+		memcpy(tp->ProductID, cardinfo->name, PROD_ID_SIZE + 1);
+
+		tp->tmspriv = cardinfo;
+
+		dev->open = tms_pci_open;
+		dev->stop = tms_pci_close;
+
+		if (register_trdev(dev) == 0) {
+			/* Enlist in the card list */
+			card = kmalloc(sizeof(struct tms_pci_card), GFP_KERNEL);
+			card->next = tms_pci_card_list;
+			tms_pci_card_list = card;
+			card->dev = dev;
+			card->pci_dev = pdev;
+			card->cardinfo = cardinfo;
+		} else {
+			printk("%s: register_trdev() returned non-zero.\n", dev->name);
+			kfree(dev->priv);
+			kfree(dev);
+			return -1;
+		}
+	}
+	
+	if (tms_pci_card_list)
+		return 0;
+	return (-1);
+}
+
+/*
+ * 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_pci_read_eeprom(struct net_device *dev)
+{
+	int i;
+	
+	/* Address: 0000:0000 */
+	tms_pci_sifwritew(dev, 0, SIFADX);
+	tms_pci_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_pci_sifreadw(dev, SIFINC) >> 8;
+}
+
+unsigned short tms_pci_setnselout_pins(struct net_device *dev)
+{
+	unsigned short val = 0;
+	struct net_local *tp = (struct net_local *)dev->priv;
+	struct cardinfo_table *cardinfo = (struct cardinfo_table *)tp->tmspriv;
+  
+	if(tp->DataRate == SPEED_4)
+		val |= cardinfo->nselout[0];	/* Set 4Mbps */
+	else
+		val |= cardinfo->nselout[1];	/* Set 16Mbps */
+	return val;
+}
+
+static int tms_pci_open(struct net_device *dev)
+{  
+	tms380tr_open(dev);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int tms_pci_close(struct net_device *dev)
+{
+	tms380tr_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+#ifdef MODULE
+
+int init_module(void)
+{
+	/* Probe for cards. */
+	if (tms_pci_probe()) {
+		printk(KERN_NOTICE "tmspci.c: No cards found.\n");
+	}
+	/* lock_tms380_module(); */
+	return (0);
+}
+
+void cleanup_module(void)
+{
+	struct net_device *dev;
+	struct tms_pci_card *this_card;
+
+	while (tms_pci_card_list) {
+		dev = tms_pci_card_list->dev;
+		
+		/*
+		 * If we used a register offset, revert here.
+		 */
+		if (dev->priv)
+		{	
+			struct net_local *tp;
+			struct cardinfo_table *cardinfo;
+
+			tp = (struct net_local *)dev->priv;
+			cardinfo = (struct cardinfo_table *)tp->tmspriv;
+			
+			dev->base_addr -= cardinfo->registeroffset;
+		}
+		unregister_netdev(dev);
+		release_region(dev->base_addr, TMS_PCI_IO_EXTENT);
+		free_irq(dev->irq, dev);
+		kfree(dev->priv);
+		kfree(dev);
+		this_card = tms_pci_card_list;
+		tms_pci_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 tmspci.c"
+ *  alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tmspci.c"
+ *  c-set-style "K&R"
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */