1 files changed, 509 insertions, 0 deletions

diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
new file mode 100644
index 000000000000..4294e1e3f156
--- /dev/null
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -0,0 +1,509 @@
+/*
+ * 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/init.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/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
+
+#ifdef PCMCIA_DEBUG
+
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+
+static void regdump(struct net_device *dev)
+{
+    int ioaddr = dev->base_addr;
+    int count;
+    
+    printk("com20020 register dump:\n");
+    for (count = ioaddr; count < ioaddr + 16; count++)
+    {
+        if (!(count % 16))
+            printk("\n%04X: ", count);
+        printk("%02X ", inb(count));
+    }
+    printk("\n");
+    
+    printk("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))
+            printk("\n%04X: ", count);
+        
+        /* copy the data */
+        printk("%02X ", inb(_MEMDATA));
+    }
+    printk("\n");
+}
+
+#else
+
+#define DEBUG(n, args...) do { } while (0)
+static inline void regdump(struct net_device *dev) { }
+
+#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 void com20020_config(dev_link_t *link);
+static void com20020_release(dev_link_t *link);
+static int com20020_event(event_t event, int priority,
+                       event_callback_args_t *args);
+
+static dev_info_t dev_info = "com20020_cs";
+
+static dev_link_t *com20020_attach(void);
+static void com20020_detach(dev_link_t *);
+
+static dev_link_t *dev_list;
+
+/*====================================================================*/
+
+typedef struct com20020_dev_t {
+    struct net_device       *dev;
+    dev_node_t          node;
+} com20020_dev_t;
+
+/*======================================================================
+
+    com20020_attach() creates an "instance" of the driver, allocating
+    local data structures for one device.  The device is registered
+    with Card Services.
+
+======================================================================*/
+
+static dev_link_t *com20020_attach(void)
+{
+    client_reg_t client_reg;
+    dev_link_t *link;
+    com20020_dev_t *info;
+    struct net_device *dev;
+    int ret;
+    struct arcnet_local *lp;
+    
+    DEBUG(0, "com20020_attach()\n");
+
+    /* Create new network device */
+    link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+    if (!link)
+        return NULL;
+
+    info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
+    if (!info)
+        goto fail_alloc_info;
+
+    dev = alloc_arcdev("");
+    if (!dev)
+        goto fail_alloc_dev;
+
+    memset(info, 0, sizeof(struct com20020_dev_t));
+    memset(link, 0, sizeof(struct dev_link_t));
+    lp = dev->priv;
+    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;
+
+    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+    link->io.NumPorts1 = 16;
+    link->io.IOAddrLines = 16;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+    link->conf.Attributes = CONF_ENABLE_IRQ;
+    link->conf.Vcc = 50;
+    link->conf.IntType = INT_MEMORY_AND_IO;
+    link->conf.Present = PRESENT_OPTION;
+
+
+    link->irq.Instance = info->dev = dev;
+    link->priv = info;
+
+    /* Register with Card Services */
+    link->next = dev_list;
+    dev_list = link;
+    client_reg.dev_info = &dev_info;
+    client_reg.EventMask =
+        CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+        CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+        CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+    client_reg.event_handler = &com20020_event;
+    client_reg.Version = 0x0210;
+    client_reg.event_callback_args.client_data = link;
+    ret = pcmcia_register_client(&link->handle, &client_reg);
+    if (ret != 0) {
+        cs_error(link->handle, RegisterClient, ret);
+        com20020_detach(link);
+        return NULL;
+    }
+
+    return link;
+
+fail_alloc_dev:
+    kfree(info);
+fail_alloc_info:
+    kfree(link);
+    return NULL;
+} /* com20020_attach */
+
+/*======================================================================
+
+    This deletes a driver "instance".  The device is de-registered
+    with Card Services.  If it has been released, all local data
+    structures are freed.  Otherwise, the structures will be freed
+    when the device is released.
+
+======================================================================*/
+
+static void com20020_detach(dev_link_t *link)
+{
+    struct com20020_dev_t *info = link->priv;
+    dev_link_t **linkp;
+    struct net_device *dev; 
+    
+    DEBUG(1,"detach...\n");
+
+    DEBUG(0, "com20020_detach(0x%p)\n", link);
+
+    /* Locate device structure */
+    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+        if (*linkp == link) break;
+    if (*linkp == NULL)
+        return;
+
+    dev = info->dev;
+
+    if (link->dev) {
+        DEBUG(1,"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);
+    }
+
+    if (link->state & DEV_CONFIG)
+        com20020_release(link);
+
+    if (link->handle)
+        pcmcia_deregister_client(link->handle);
+
+    /* Unlink device structure, free bits */
+    DEBUG(1,"unlinking...\n");
+    *linkp = link->next;
+    if (link->priv)
+    {
+        dev = info->dev;
+        if (dev)
+        {
+            DEBUG(1,"kfree...\n");
+            free_netdev(dev);
+        }
+        DEBUG(1,"kfree2...\n");
+        kfree(info);
+    }
+    DEBUG(1,"kfree3...\n");
+    kfree(link);
+
+} /* com20020_detach */
+
+/*======================================================================
+
+    com20020_config() is scheduled to run after a CARD_INSERTION event
+    is received, to configure the PCMCIA socket, and to make the
+    device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void com20020_config(dev_link_t *link)
+{
+    struct arcnet_local *lp;
+    client_handle_t handle;
+    tuple_t tuple;
+    cisparse_t parse;
+    com20020_dev_t *info;
+    struct net_device *dev;
+    int i, last_ret, last_fn;
+    u_char buf[64];
+    int ioaddr;
+
+    handle = link->handle;
+    info = link->priv;
+    dev = info->dev;
+
+    DEBUG(1,"config...\n");
+
+    DEBUG(0, "com20020_config(0x%p)\n", link);
+
+    tuple.Attributes = 0;
+    tuple.TupleData = buf;
+    tuple.TupleDataMax = 64;
+    tuple.TupleOffset = 0;
+    tuple.DesiredTuple = CISTPL_CONFIG;
+    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+    CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+    CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+    link->conf.ConfigBase = parse.config.base;
+
+    /* Configure card */
+    link->state |= DEV_CONFIG;
+
+    DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
+    i = !CS_SUCCESS;
+    if (!link->io.BasePort1)
+    {
+        for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
+        {
+            link->io.BasePort1 = ioaddr;
+            i = pcmcia_request_io(link->handle, &link->io);
+            if (i == CS_SUCCESS)
+                break;
+        }
+    }
+    else
+        i = pcmcia_request_io(link->handle, &link->io);
+    
+    if (i != CS_SUCCESS)
+    {
+        DEBUG(1,"arcnet: requestIO failed totally!\n");
+        goto failed;
+    }
+        
+    ioaddr = dev->base_addr = link->io.BasePort1;
+    DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
+
+    DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
+           link->irq.AssignedIRQ,
+           link->irq.IRQInfo1, link->irq.IRQInfo2);
+    i = pcmcia_request_irq(link->handle, &link->irq);
+    if (i != CS_SUCCESS)
+    {
+        DEBUG(1,"arcnet: requestIRQ failed totally!\n");
+        goto failed;
+    }
+
+    dev->irq = link->irq.AssignedIRQ;
+
+    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+    if (com20020_check(dev))
+    {
+        regdump(dev);
+        goto failed;
+    }
+    
+    lp = dev->priv;
+    lp->card_name = "PCMCIA COM20020";
+    lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
+
+    link->dev = &info->node;
+    link->state &= ~DEV_CONFIG_PENDING;
+    SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+    i = com20020_found(dev, 0); /* calls register_netdev */
+    
+    if (i != 0) {
+        DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
+        link->dev = NULL;
+        goto failed;
+    }
+
+    strcpy(info->node.dev_name, dev->name);
+
+    DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
+           dev->name, dev->base_addr, dev->irq);
+    return;
+
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+failed:
+    DEBUG(1,"com20020_config failed...\n");
+    com20020_release(link);
+} /* com20020_config */
+
+/*======================================================================
+
+    After a card is removed, com20020_release() will unregister the net
+    device, and release the PCMCIA configuration.  If the device is
+    still open, this will be postponed until it is closed.
+
+======================================================================*/
+
+static void com20020_release(dev_link_t *link)
+{
+
+    DEBUG(1,"release...\n");
+
+    DEBUG(0, "com20020_release(0x%p)\n", link);
+
+    pcmcia_release_configuration(link->handle);
+    pcmcia_release_io(link->handle, &link->io);
+    pcmcia_release_irq(link->handle, &link->irq);
+
+    link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING);
+}
+
+/*======================================================================
+
+    The card status event handler.  Mostly, this schedules other
+    stuff to run after an event is received.  A CARD_REMOVAL event
+    also sets some flags to discourage the net drivers from trying
+    to talk to the card any more.
+
+======================================================================*/
+
+static int com20020_event(event_t event, int priority,
+                          event_callback_args_t *args)
+{
+    dev_link_t *link = args->client_data;
+    com20020_dev_t *info = link->priv;
+    struct net_device *dev = info->dev;
+
+    DEBUG(1, "com20020_event(0x%06x)\n", event);
+    
+    switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+        link->state &= ~DEV_PRESENT;
+        if (link->state & DEV_CONFIG)
+            netif_device_detach(dev);
+        break;
+    case CS_EVENT_CARD_INSERTION:
+        link->state |= DEV_PRESENT;
+        com20020_config(link); 
+        break;
+    case CS_EVENT_PM_SUSPEND:
+        link->state |= DEV_SUSPEND;
+        /* Fall through... */
+    case CS_EVENT_RESET_PHYSICAL:
+        if (link->state & DEV_CONFIG) {
+            if (link->open) {
+                netif_device_detach(dev);
+            }
+            pcmcia_release_configuration(link->handle);
+        }
+        break;
+    case CS_EVENT_PM_RESUME:
+        link->state &= ~DEV_SUSPEND;
+        /* Fall through... */
+    case CS_EVENT_CARD_RESET:
+        if (link->state & DEV_CONFIG) {
+            pcmcia_request_configuration(link->handle, &link->conf);
+            if (link->open) {
+                int ioaddr = dev->base_addr;
+                struct arcnet_local *lp = dev->priv;
+                ARCRESET;
+            }
+        }
+        break;
+    }
+    return 0;
+} /* com20020_event */
+
+
+
+static struct pcmcia_driver com20020_cs_driver = {
+        .owner          = THIS_MODULE,
+        .drv            = {
+                .name   = "com20020_cs",
+        },
+        .attach         = com20020_attach,
+        .detach         = com20020_detach,
+};
+
+static int __init init_com20020_cs(void)
+{
+        return pcmcia_register_driver(&com20020_cs_driver);
+}
+
+static void __exit exit_com20020_cs(void)
+{
+        pcmcia_unregister_driver(&com20020_cs_driver);
+        BUG_ON(dev_list != NULL);
+}
+
+module_init(init_com20020_cs);
+module_exit(exit_com20020_cs);