patch-2.3.36 linux/drivers/net/arcnet/com20020-pci.c

• Lines: 171
• Date: Sun Jan 2 00:46:32 2000
• Orig file: v2.3.35/linux/drivers/net/arcnet/com20020-pci.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.35/linux/drivers/net/arcnet/com20020-pci.c linux/drivers/net/arcnet/com20020-pci.c
@@ -0,0 +1,170 @@
+/*
+ * Linux ARCnet driver - COM20020 PCI support (Contemporary Controls PCI20)
+ * 
+ * Written 1994-1999 by Avery Pennarun,
+ *    based on an ISA version by David Woodhouse.
+ * Written 1999 by Martin Mares <mj@suse.cz>.
+ * Derived from skeleton.c by Donald Becker.
+ *
+ * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
+ *  for sponsoring the further development of this driver.
+ *
+ * **********************
+ *
+ * The original copyright of skeleton.c was as follows:
+ *
+ * skeleton.c Written 1993 by Donald Becker.
+ * Copyright 1993 United States Government as represented by the
+ * Director, National Security Agency.  This software may only be used
+ * and distributed according to the terms of the GNU Public License as
+ * modified by SRC, incorporated herein by reference.
+ *
+ * **********************
+ *
+ * For more details, see drivers/net/arcnet.c
+ *
+ * **********************
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/malloc.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/arcdevice.h>
+#include <linux/com20020.h>
+
+#include <asm/io.h>
+
+
+#define VERSION "arcnet: COM20020 PCI support\n"
+
+#ifdef MODULE
+#define MAX_CARDS	16
+static struct net_device *cards[MAX_CARDS];
+static int numcards;
+#endif
+
+static void com20020pci_open_close(struct net_device *dev, bool open)
+{
+	if (open)
+		MOD_INC_USE_COUNT;
+	else
+		MOD_DEC_USE_COUNT;
+}
+
+/*
+ * No need to probe for PCI cards - just ask the PCI layer and launch all the
+ * ones we find.
+ */
+static int __init com20020pci_probe(char *name_template, int node, int backplane, int clock, int timeout)
+{
+	struct net_device *dev;
+	struct arcnet_local *lp;
+	struct pci_dev *pdev = NULL;
+	int ioaddr, gotone = 0, err;
+
+	BUGLVL(D_NORMAL) printk(VERSION);
+
+	while ((pdev = pci_find_device(0x1571, 0xa004, pdev))) {
+		if (pci_enable_device(pdev))
+			continue;
+		dev = dev_alloc(name_template ? : "arc%d", &err);
+		if (!dev)
+			return err;
+		lp = dev->priv = kmalloc(sizeof(struct arcnet_local), GFP_KERNEL);
+		if (!lp)
+			return -ENOMEM;
+		memset(lp, 0, sizeof(struct arcnet_local));
+
+		ioaddr = pdev->resource[2].start;
+		dev->base_addr = ioaddr;
+		dev->irq = pdev->irq;
+		dev->dev_addr[0] = node;
+		lp->backplane = backplane;
+		lp->clock = clock;
+		lp->timeout = timeout;
+		lp->hw.open_close_ll = com20020pci_open_close;
+
+		BUGMSG(D_INIT, "PCI BIOS reports a device at %Xh, IRQ %d\n",
+		       ioaddr, dev->irq);
+
+		if (check_region(ioaddr, ARCNET_TOTAL_SIZE)) {
+			BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
+			       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
+			continue;
+		}
+		if (ASTATUS() == 0xFF) {
+			BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
+			       "but seems empty!\n", ioaddr);
+			continue;
+		}
+		if (com20020_check(dev))
+			continue;
+
+		if (!com20020_found(dev, SA_SHIRQ)) {
+#ifdef MODULE
+			if(numcards==MAX_CARDS)
+				printk(KERN_WARNING "com20020pci: Too many cards. Ignoring.\n");
+			else
+				cards[numcards++] = dev;
+#endif
+			gotone++;
+		}
+	}
+
+	return gotone ? 0 : -ENODEV;
+}
+
+
+#ifdef MODULE
+
+/* Module parameters */
+
+static int node = 0;
+static char *device;		/* use eg. device="arc1" to change name */
+static int timeout = 3;
+static int backplane = 0;
+static int clock = 0;
+
+MODULE_PARM(node, "i");
+MODULE_PARM(device, "s");
+MODULE_PARM(timeout, "i");
+MODULE_PARM(backplane, "i");
+MODULE_PARM(clock, "i");
+
+int init_module(void)
+{
+	return com20020pci_probe(device, node, backplane, clock & 7, timeout & 3);
+}
+
+void cleanup_module(void)
+{
+	struct net_device *dev;
+	int count;
+
+	for (count = 0; count < numcards; count++) {
+		dev = cards[count];
+
+		if (dev->start)
+			dev->stop(dev);
+
+		free_irq(dev->irq, dev);
+		release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
+		unregister_netdev(dev);
+		kfree(dev->priv);
+		kfree(dev);
+	}
+}
+
+#else
+
+void __init com20020pci_probe_all(void)
+{
+	com20020pci_probe(NULL, 0, 0, 0, 3);
+}
+
+#endif				/* MODULE */