Initial import

1 files changed, 331 insertions, 0 deletions

diff --git a/drivers/net/arcnet/com20020_cs.c b/drivers/net/arcnet/com20020_cs.c
new file mode 100644
index 000000000..057d95821
--- /dev/null
+++ b/drivers/net/arcnet/com20020_cs.c
@@ -0,0 +1,331 @@
+/*
+ * Linux ARCnet driver - COM20020 PCMCIA support
+ * 
+ * Written 1994-1999 by Avery Pennarun,
+ *    based on an ISA version by David Woodhouse.
+ * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4)
+ *    which was derived from pcnet_cs.c by David Hinds.
+ * Some additional portions 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 General Public License as
+ * modified by SRC, incorporated herein by reference.
+ * 
+ * **********************
+ * Changes:
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000
+ * - reorganize kmallocs in com20020_attach, checking all for failure
+ *   and releasing the previous allocations if one fails
+ * **********************
+ * 
+ * For more details, see drivers/net/arcnet.c
+ *
+ * **********************
+ */
+#include <linux/kernel.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/arcdevice.h>
+#include <linux/com20020.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include <asm/io.h>
+
+#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
+
+
+static void regdump(struct net_device *dev)
+{
+#ifdef DEBUG
+    int ioaddr = dev->base_addr;
+    int count;
+    
+    netdev_dbg(dev, "register dump:\n");
+    for (count = ioaddr; count < ioaddr + 16; count++)
+    {
+	if (!(count % 16))
+	    pr_cont("%04X:", count);
+	pr_cont(" %02X", inb(count));
+    }
+    pr_cont("\n");
+    
+    netdev_dbg(dev, "buffer0 dump:\n");
+	/* set up the address register */
+        count = 0;
+	outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
+	outb(count & 0xff, _ADDR_LO);
+    
+    for (count = 0; count < 256+32; count++)
+    {
+	if (!(count % 16))
+	    pr_cont("%04X:", count);
+	
+	/* copy the data */
+	pr_cont(" %02X", inb(_MEMDATA));
+    }
+    pr_cont("\n");
+#endif
+}
+
+
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+static int node;
+static int timeout = 3;
+static int backplane;
+static int clockp;
+static int clockm;
+
+module_param(node, int, 0);
+module_param(timeout, int, 0);
+module_param(backplane, int, 0);
+module_param(clockp, int, 0);
+module_param(clockm, int, 0);
+
+MODULE_LICENSE("GPL");
+
+/*====================================================================*/
+
+static int com20020_config(struct pcmcia_device *link);
+static void com20020_release(struct pcmcia_device *link);
+
+static void com20020_detach(struct pcmcia_device *p_dev);
+
+/*====================================================================*/
+
+static int com20020_probe(struct pcmcia_device *p_dev)
+{
+    struct com20020_dev *info;
+    struct net_device *dev;
+    struct arcnet_local *lp;
+
+    dev_dbg(&p_dev->dev, "com20020_attach()\n");
+
+    /* Create new network device */
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
+    if (!info)
+	goto fail_alloc_info;
+
+    dev = alloc_arcdev("");
+    if (!dev)
+	goto fail_alloc_dev;
+
+    lp = netdev_priv(dev);
+    lp->timeout = timeout;
+    lp->backplane = backplane;
+    lp->clockp = clockp;
+    lp->clockm = clockm & 3;
+    lp->hw.owner = THIS_MODULE;
+
+    /* fill in our module parameters as defaults */
+    dev->dev_addr[0] = node;
+
+    p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+    p_dev->resource[0]->end = 16;
+    p_dev->config_flags |= CONF_ENABLE_IRQ;
+
+    info->dev = dev;
+    p_dev->priv = info;
+
+    return com20020_config(p_dev);
+
+fail_alloc_dev:
+    kfree(info);
+fail_alloc_info:
+    return -ENOMEM;
+} /* com20020_attach */
+
+static void com20020_detach(struct pcmcia_device *link)
+{
+    struct com20020_dev *info = link->priv;
+    struct net_device *dev = info->dev;
+
+    dev_dbg(&link->dev, "detach...\n");
+
+    dev_dbg(&link->dev, "com20020_detach\n");
+
+    dev_dbg(&link->dev, "unregister...\n");
+
+    unregister_netdev(dev);
+
+    /*
+     * this is necessary because we register our IRQ separately
+     * from card services.
+     */
+    if (dev->irq)
+	    free_irq(dev->irq, dev);
+
+    com20020_release(link);
+
+    /* Unlink device structure, free bits */
+    dev_dbg(&link->dev, "unlinking...\n");
+    if (link->priv)
+    {
+	dev = info->dev;
+	if (dev)
+	{
+	    dev_dbg(&link->dev, "kfree...\n");
+	    free_netdev(dev);
+	}
+	dev_dbg(&link->dev, "kfree2...\n");
+	kfree(info);
+    }
+
+} /* com20020_detach */
+
+static int com20020_config(struct pcmcia_device *link)
+{
+    struct arcnet_local *lp;
+    struct com20020_dev *info;
+    struct net_device *dev;
+    int i, ret;
+    int ioaddr;
+
+    info = link->priv;
+    dev = info->dev;
+
+    dev_dbg(&link->dev, "config...\n");
+
+    dev_dbg(&link->dev, "com20020_config\n");
+
+    dev_dbg(&link->dev, "baseport1 is %Xh\n",
+	    (unsigned int) link->resource[0]->start);
+
+    i = -ENODEV;
+    link->io_lines = 16;
+
+    if (!link->resource[0]->start)
+    {
+	for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
+	{
+	    link->resource[0]->start = ioaddr;
+	    i = pcmcia_request_io(link);
+	    if (i == 0)
+		break;
+	}
+    }
+    else
+	i = pcmcia_request_io(link);
+    
+    if (i != 0)
+    {
+	dev_dbg(&link->dev, "requestIO failed totally!\n");
+	goto failed;
+    }
+	
+    ioaddr = dev->base_addr = link->resource[0]->start;
+    dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
+
+    dev_dbg(&link->dev, "request IRQ %d\n",
+	    link->irq);
+    if (!link->irq)
+    {
+	dev_dbg(&link->dev, "requestIRQ failed totally!\n");
+	goto failed;
+    }
+
+    dev->irq = link->irq;
+
+    ret = pcmcia_enable_device(link);
+    if (ret)
+	    goto failed;
+
+    if (com20020_check(dev))
+    {
+	regdump(dev);
+	goto failed;
+    }
+    
+    lp = netdev_priv(dev);
+    lp->card_name = "PCMCIA COM20020";
+    lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
+
+    SET_NETDEV_DEV(dev, &link->dev);
+
+    i = com20020_found(dev, 0);	/* calls register_netdev */
+    
+    if (i != 0) {
+	dev_notice(&link->dev,
+		   "com20020_found() failed\n");
+	goto failed;
+    }
+
+    netdev_dbg(dev, "port %#3lx, irq %d\n",
+	       dev->base_addr, dev->irq);
+    return 0;
+
+failed:
+    dev_dbg(&link->dev, "com20020_config failed...\n");
+    com20020_release(link);
+    return -ENODEV;
+} /* com20020_config */
+
+static void com20020_release(struct pcmcia_device *link)
+{
+	dev_dbg(&link->dev, "com20020_release\n");
+	pcmcia_disable_device(link);
+}
+
+static int com20020_suspend(struct pcmcia_device *link)
+{
+	struct com20020_dev *info = link->priv;
+	struct net_device *dev = info->dev;
+
+	if (link->open)
+		netif_device_detach(dev);
+
+	return 0;
+}
+
+static int com20020_resume(struct pcmcia_device *link)
+{
+	struct com20020_dev *info = link->priv;
+	struct net_device *dev = info->dev;
+
+	if (link->open) {
+		int ioaddr = dev->base_addr;
+		struct arcnet_local *lp = netdev_priv(dev);
+		ARCRESET;
+	}
+
+	return 0;
+}
+
+static const struct pcmcia_device_id com20020_ids[] = {
+	PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
+			"PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
+	PCMCIA_DEVICE_PROD_ID12("SoHard AG",
+			"SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
+	PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
+
+static struct pcmcia_driver com20020_cs_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "com20020_cs",
+	.probe		= com20020_probe,
+	.remove		= com20020_detach,
+	.id_table	= com20020_ids,
+	.suspend	= com20020_suspend,
+	.resume		= com20020_resume,
+};
+module_pcmcia_driver(com20020_cs_driver);