patch-2.3.27 linux/drivers/char/pcmcia/serial_cs.c

• Lines: 668
• Date: Thu Nov 11 16:03:36 1999
• Orig file: v2.3.26/linux/drivers/char/pcmcia/serial_cs.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.26/linux/drivers/char/pcmcia/serial_cs.c linux/drivers/char/pcmcia/serial_cs.c
@@ -0,0 +1,667 @@
+/*======================================================================
+
+    A driver for PCMCIA serial devices
+
+    serial_cs.c 1.114 1999/11/11 00:54:46
+
+    The contents of this file are subject to the Mozilla Public
+    License Version 1.1 (the "License"); you may not use this file
+    except in compliance with the License. You may obtain a copy of
+    the License at http://www.mozilla.org/MPL/
+
+    Software distributed under the License is distributed on an "AS
+    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+    implied. See the License for the specific language governing
+    rights and limitations under the License.
+
+    The initial developer of the original code is David A. Hinds
+    <dhinds@pcmcia.sourceforge.org>.  Portions created by David A. Hinds
+    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+
+    Alternatively, the contents of this file may be used under the
+    terms of the GNU Public License version 2 (the "GPL"), in which
+    case the provisions of the GPL are applicable instead of the
+    above.  If you wish to allow the use of your version of this file
+    only under the terms of the GPL and not to allow others to use
+    your version of this file under the MPL, indicate your decision
+    by deleting the provisions above and replace them with the notice
+    and other provisions required by the GPL.  If you do not delete
+    the provisions above, a recipient may use your version of this
+    file under either the MPL or the GPL.
+    
+======================================================================*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/major.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+MODULE_PARM(pc_debug, "i");
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"serial_cs.c 1.114 1999/11/11 00:54:46 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+/* Bit map of interrupts to choose from */
+static u_int irq_mask = 0xdeb8;
+static int irq_list[4] = { -1 };
+
+/* Enable the speaker? */
+static int do_sound = 1;
+
+MODULE_PARM(irq_mask, "i");
+MODULE_PARM(irq_list, "1-4i");
+MODULE_PARM(do_sound, "i");
+
+/*====================================================================*/
+
+/* Table of multi-port card ID's */
+
+typedef struct {
+    u_short	manfid;
+    u_short	prodid;
+    int		multi;		/* 1 = multifunction, > 1 = # ports */
+} multi_id_t;
+
+static multi_id_t multi_id[] = {
+    { MANFID_OMEGA, PRODID_OMEGA_QSP_100, 4 },
+    { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232, 2 },
+    { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232_D1, 2 },
+    { MANFID_QUATECH, PRODID_QUATECH_QUAD_RS232, 4 },
+    { MANFID_SOCKET, PRODID_SOCKET_DUAL_RS232, 2 },
+    { MANFID_INTEL, PRODID_INTEL_DUAL_RS232, 2 },
+    { MANFID_NATINST, PRODID_NATINST_QUAD_RS232, 4 }
+};
+#define MULTI_COUNT (sizeof(multi_id)/sizeof(multi_id_t))
+
+typedef struct serial_info_t {
+    int		ndev;
+    int		multi;
+    int		slave;
+    int		manfid;
+    dev_node_t	node[4];
+    int		line[4];
+} serial_info_t;
+
+static void serial_config(dev_link_t *link);
+static void serial_release(u_long arg);
+static int serial_event(event_t event, int priority,
+			event_callback_args_t *args);
+
+static dev_info_t dev_info = "serial_cs";
+
+static dev_link_t *serial_attach(void);
+static void serial_detach(dev_link_t *);
+
+static dev_link_t *dev_list = NULL;
+
+/*====================================================================*/
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+    error_info_t err = { func, ret };
+    CardServices(ReportError, handle, &err);
+}
+
+/*======================================================================
+
+    serial_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 *serial_attach(void)
+{
+    client_reg_t client_reg;
+    dev_link_t *link;
+    int i, ret;
+    
+    DEBUG(0, "serial_attach()\n");
+
+    /* Create new serial device */
+    link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+    memset(link, 0, sizeof(struct dev_link_t));
+    link->release.function = &serial_release;
+    link->release.data = (u_long)link;
+    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+    link->io.NumPorts1 = 8;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+    link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
+    if (irq_list[0] == -1)
+	link->irq.IRQInfo2 = irq_mask;
+    else
+	for (i = 0; i < 4; i++)
+	    link->irq.IRQInfo2 |= 1 << irq_list[i];
+    link->conf.Attributes = CONF_ENABLE_IRQ;
+    link->conf.Vcc = 50;
+    if (do_sound) {
+	link->conf.Attributes |= CONF_ENABLE_SPKR;
+	link->conf.Status = CCSR_AUDIO_ENA;
+    }
+    link->conf.IntType = INT_MEMORY_AND_IO;
+    link->priv = kmalloc(sizeof(struct serial_info_t), GFP_KERNEL);
+    memset(link->priv, 0, sizeof(struct serial_info_t));
+    
+    /* Register with Card Services */
+    link->next = dev_list;
+    dev_list = link;
+    client_reg.dev_info = &dev_info;
+    client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+    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 = &serial_event;
+    client_reg.Version = 0x0210;
+    client_reg.event_callback_args.client_data = link;
+    ret = CardServices(RegisterClient, &link->handle, &client_reg);
+    if (ret != CS_SUCCESS) {
+	cs_error(link->handle, RegisterClient, ret);
+	serial_detach(link);
+	return NULL;
+    }
+    
+    return link;
+} /* serial_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 serial_detach(dev_link_t *link)
+{
+    dev_link_t **linkp;
+    long flags;
+    int ret;
+
+    DEBUG(0, "serial_detach(0x%p)\n", link);
+    
+    /* Locate device structure */
+    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+	if (*linkp == link) break;
+    if (*linkp == NULL)
+	return;
+
+    save_flags(flags);
+    cli();
+    if (link->state & DEV_RELEASE_PENDING) {
+	del_timer(&link->release);
+	link->state &= ~DEV_RELEASE_PENDING;
+    }
+    restore_flags(flags);
+    
+    if (link->state & DEV_CONFIG)
+	serial_release((u_long)link);
+    
+    if (link->handle) {
+	ret = CardServices(DeregisterClient, link->handle);
+	if (ret != CS_SUCCESS)
+	    cs_error(link->handle, DeregisterClient, ret);
+    }
+    
+    /* Unlink device structure, free bits */
+    *linkp = link->next;
+    kfree_s(link->priv, sizeof(serial_info_t));
+    kfree_s(link, sizeof(struct dev_link_t));
+    
+} /* serial_detach */
+
+/*====================================================================*/
+
+static int setup_serial(serial_info_t *info, ioaddr_t port, int irq)
+{
+    struct serial_struct serial;
+    int line;
+    
+    memset(&serial, 0, sizeof(serial));
+    serial.port = port;
+    serial.irq = irq;
+    serial.flags = ASYNC_SKIP_TEST;
+    serial.flags |= (info->multi || info->slave) ? ASYNC_SHARE_IRQ : 0;
+    line = register_serial(&serial);
+    if (line < 0) {
+	printk(KERN_NOTICE "serial_cs: register_serial() at 0x%04x, "
+	       "irq %d failed\n", serial.port, serial.irq);
+	return -1;
+    }
+    
+    info->line[info->ndev] = line;
+    sprintf(info->node[info->ndev].dev_name, "ttyS%d", line);
+    info->node[info->ndev].major = TTY_MAJOR;
+    info->node[info->ndev].minor = 0x40+line;
+    if (info->ndev > 0)
+	info->node[info->ndev-1].next = &info->node[info->ndev];
+    info->ndev++;
+    
+    return 0;
+}
+
+/*====================================================================*/
+
+static int get_tuple(int fn, client_handle_t handle, tuple_t *tuple,
+		     cisparse_t *parse)
+{
+    int i;
+    i = CardServices(fn, handle, tuple);
+    if (i != CS_SUCCESS) return CS_NO_MORE_ITEMS;
+    i = CardServices(GetTupleData, handle, tuple);
+    if (i != CS_SUCCESS) return i;
+    return CardServices(ParseTuple, handle, tuple, parse);
+}
+
+#define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
+#define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
+
+/*====================================================================*/
+
+static int simple_config(dev_link_t *link)
+{
+    static ioaddr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+    client_handle_t handle = link->handle;
+    serial_info_t *info = link->priv;
+    tuple_t tuple;
+    u_char buf[256];
+    cisparse_t parse;
+    cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+    config_info_t config;
+    int i, j;
+
+    /* If the card is already configured, look up the port and irq */
+    i = CardServices(GetConfigurationInfo, handle, &config);
+    if ((i == CS_SUCCESS) &&
+	(config.Attributes & CONF_VALID_CLIENT)) {
+	ioaddr_t port = 0;
+	if ((config.BasePort2 != 0) && (config.NumPorts2 == 8)) {
+	    port = config.BasePort2;
+	    info->slave = 1;
+	} else if ((info->manfid == MANFID_OSITECH) &&
+		   (config.NumPorts1 == 0x40)) {
+	    port = config.BasePort1 + 0x28;
+	    info->slave = 1;
+	}
+	if (info->slave)
+	    return setup_serial(info, port, config.AssignedIRQ);
+    }
+    link->conf.Vcc = config.Vcc;
+    
+    /* First pass: look for a config entry that looks normal. */
+    tuple.TupleData = (cisdata_t *)buf;
+    tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
+    tuple.Attributes = 0;
+    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+    i = first_tuple(handle, &tuple, &parse);
+    while (i != CS_NO_MORE_ITEMS) {
+	if (i != CS_SUCCESS) goto next_entry;
+	if (cf->vpp1.present & (1<<CISTPL_POWER_VNOM))
+	    link->conf.Vpp1 = link->conf.Vpp2 =
+		cf->vpp1.param[CISTPL_POWER_VNOM]/10000;
+	if ((cf->io.nwin > 0) && ((cf->io.win[0].base & 0xf) == 8)) {
+	    link->conf.ConfigIndex = cf->index;
+	    link->io.BasePort1 = cf->io.win[0].base;
+	    link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
+	    i = CardServices(RequestIO, link->handle, &link->io);
+	    if (i == CS_SUCCESS) goto found_port;
+	}
+    next_entry:
+	i = next_tuple(handle, &tuple, &parse);
+    }
+    
+    /* Second pass: try to find an entry that isn't picky about
+       its base address, then try to grab any standard serial port
+       address, and finally try to get any free port. */
+    i = first_tuple(handle, &tuple, &parse);
+    while (i != CS_NO_MORE_ITEMS) {
+	if ((i == CS_SUCCESS) && (cf->io.nwin > 0) &&
+	    ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
+	    link->conf.ConfigIndex = cf->index;
+	    for (j = 0; j < 5; j++) {
+		link->io.BasePort1 = base[j];
+		i = CardServices(RequestIO, link->handle,
+				 &link->io);
+		if (i == CS_SUCCESS) goto found_port;
+	    }
+	}
+	i = next_tuple(handle, &tuple, &parse);
+    }
+
+found_port:
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestIO, i);
+	return -1;
+    }
+    
+    i = CardServices(RequestIRQ, link->handle, &link->irq);
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestIRQ, i);
+	link->irq.AssignedIRQ = 0;
+    }
+    if (info->multi && (info->manfid == MANFID_3COM))
+	link->conf.ConfigIndex &= ~(0x08);
+    i = CardServices(RequestConfiguration, link->handle, &link->conf);
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestConfiguration, i);
+	return -1;
+    }
+
+    return setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
+}
+
+static int multi_config(dev_link_t *link)
+{
+    client_handle_t handle = link->handle;
+    serial_info_t *info = link->priv;
+    tuple_t tuple;
+    u_char buf[256];
+    cisparse_t parse;
+    cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+    int i, base2 = 0;
+
+    tuple.TupleData = (cisdata_t *)buf;
+    tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
+    tuple.Attributes = 0;
+    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+
+    /* First, look for a generic full-sized window */
+    link->io.NumPorts1 = info->multi * 8;
+    i = first_tuple(handle, &tuple, &parse);
+    while (i != CS_NO_MORE_ITEMS) {
+	/* The quad port cards have bad CIS's, so just look for a
+	   window larger than 8 ports and assume it will be right */
+	if ((i == CS_SUCCESS) && (cf->io.nwin == 1) &&
+	    (cf->io.win[0].len > 8)) {
+	    link->conf.ConfigIndex = cf->index;
+	    link->io.BasePort1 = cf->io.win[0].base;
+	    link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
+	    i = CardServices(RequestIO, link->handle, &link->io);
+	    base2 = link->io.BasePort1 + 8;
+	    if (i == CS_SUCCESS) break;
+	}
+	i = next_tuple(handle, &tuple, &parse);
+    }
+
+    /* If that didn't work, look for two windows */
+    if (i != CS_SUCCESS) {
+	link->io.NumPorts1 = link->io.NumPorts2 = 8;
+	info->multi = 2;
+	i = first_tuple(handle, &tuple, &parse);
+	while (i != CS_NO_MORE_ITEMS) {
+	    if ((i == CS_SUCCESS) && (cf->io.nwin == 2)) {
+		link->conf.ConfigIndex = cf->index;
+		link->io.BasePort1 = cf->io.win[0].base;
+		link->io.BasePort2 = cf->io.win[1].base;
+		link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
+		i = CardServices(RequestIO, link->handle, &link->io);
+		base2 = link->io.BasePort2;
+		if (i == CS_SUCCESS) break;
+	    }
+	    i = next_tuple(handle, &tuple, &parse);
+	}
+    }
+    
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestIO, i);
+	return -1;
+    }
+    
+    i = CardServices(RequestIRQ, link->handle, &link->irq);
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestIRQ, i);
+	link->irq.AssignedIRQ = 0;
+    }
+    /* Socket Dual IO: this enables irq's for second port */
+    if (info->multi && (info->manfid == MANFID_SOCKET)) {
+	link->conf.Present |= PRESENT_EXT_STATUS;
+	link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
+    }
+    i = CardServices(RequestConfiguration, link->handle, &link->conf);
+    if (i != CS_SUCCESS) {
+	cs_error(link->handle, RequestConfiguration, i);
+	return -1;
+    }
+    
+    setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
+    for (i = 0; i < info->multi-1; i++)
+	setup_serial(info, base2+(8*i), link->irq.AssignedIRQ);
+    
+    return 0;
+}
+
+/*======================================================================
+
+    serial_config() is scheduled to run after a CARD_INSERTION event
+    is received, to configure the PCMCIA socket, and to make the
+    serial device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, args...) \
+while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
+
+void serial_config(dev_link_t *link)
+{
+    client_handle_t handle;
+    serial_info_t *info;
+    tuple_t tuple;
+    u_short buf[128];
+    cisparse_t parse;
+    cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+    int i, last_ret, last_fn;
+
+    sti();
+    handle = link->handle;
+    info = link->priv;
+    
+    DEBUG(0, "serial_config(0x%p)\n", link);
+    
+    tuple.TupleData = (cisdata_t *)buf;
+    tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
+    tuple.Attributes = 0;
+    /* Get configuration register information */
+    tuple.DesiredTuple = CISTPL_CONFIG;
+    last_ret = first_tuple(handle, &tuple, &parse);
+    if (last_ret != CS_SUCCESS) {
+	last_fn = ParseTuple;
+	goto cs_failed;
+    }
+    link->conf.ConfigBase = parse.config.base;
+    link->conf.Present = parse.config.rmask[0];
+    
+    /* Configure card */
+    link->state |= DEV_CONFIG;
+
+    /* Is this a compliant multifunction card? */
+    tuple.DesiredTuple = CISTPL_LONGLINK_MFC;
+    tuple.Attributes = TUPLE_RETURN_COMMON | TUPLE_RETURN_LINK;
+    info->multi = (first_tuple(handle, &tuple, &parse) == CS_SUCCESS);
+    
+    /* Is this a multiport card? */
+    tuple.DesiredTuple = CISTPL_MANFID;
+    if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
+	info->manfid = le16_to_cpu(buf[0]);
+	for (i = 0; i < MULTI_COUNT; i++)
+	    if ((info->manfid == multi_id[i].manfid) &&
+		(le16_to_cpu(buf[1]) == multi_id[i].prodid))
+		break;
+	if (i < MULTI_COUNT)
+	    info->multi = multi_id[i].multi;
+    }
+
+    /* Another check for dual-serial cards: look for either serial or
+       multifunction cards that ask for appropriate IO port ranges */
+    tuple.DesiredTuple = CISTPL_FUNCID;
+    if ((info->multi == 0) &&
+	((first_tuple(handle, &tuple, &parse) != CS_SUCCESS) ||
+	 (parse.funcid.func == CISTPL_FUNCID_MULTI) ||
+	 (parse.funcid.func == CISTPL_FUNCID_SERIAL))) {
+	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+	if ((first_tuple(handle, &tuple, &parse) == CS_SUCCESS) &&
+	    (((cf->io.nwin == 1) && (cf->io.win[0].len == 16)) ||
+	     ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) &&
+	      (cf->io.win[1].len == 8))))
+	    info->multi = 2;
+    }
+    
+    if (info->multi > 1)
+	multi_config(link);
+    else
+	simple_config(link);
+    
+    if (info->ndev == 0)
+	goto failed;
+    
+    if (info->manfid == MANFID_IBM) {
+	conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
+	CS_CHECK(AccessConfigurationRegister, link->handle, &reg);
+	reg.Action = CS_WRITE;
+	reg.Value = reg.Value | 1;
+	CS_CHECK(AccessConfigurationRegister, link->handle, &reg);
+    }
+
+    link->dev = &info->node[0];
+    link->state &= ~DEV_CONFIG_PENDING;
+    return;
+
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+failed:
+    serial_release((u_long)link);
+
+} /* serial_config */
+
+/*======================================================================
+
+    After a card is removed, serial_release() will unregister the net
+    device, and release the PCMCIA configuration.
+    
+======================================================================*/
+
+void serial_release(u_long arg)
+{
+    dev_link_t *link = (dev_link_t *)arg;
+    serial_info_t *info = link->priv;
+    int i;
+    
+    sti();
+    
+    DEBUG(0, "serial_release(0x%p)\n", link);
+
+    for (i = 0; i < info->ndev; i++) {
+	unregister_serial(info->line[i]);
+    }
+    link->dev = NULL;
+
+    if (!info->slave) {
+	CardServices(ReleaseConfiguration, link->handle);
+	CardServices(ReleaseIO, link->handle, &link->io);
+	CardServices(ReleaseIRQ, link->handle, &link->irq);
+    }
+    
+    link->state &= ~DEV_CONFIG;
+
+} /* serial_release */
+
+/*======================================================================
+
+    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 serial drivers from
+    talking to the ports.
+    
+======================================================================*/
+
+static int serial_event(event_t event, int priority,
+			event_callback_args_t *args)
+{
+    dev_link_t *link = args->client_data;
+    serial_info_t *info = link->priv;
+    
+    DEBUG(1, "serial_event(0x%06x)\n", event);
+    
+    switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+	link->state &= ~DEV_PRESENT;
+	if (link->state & DEV_CONFIG) {
+	    link->release.expires = jiffies + HZ/20;
+	    link->state |= DEV_RELEASE_PENDING;
+	    add_timer(&link->release);
+	}
+	break;
+    case CS_EVENT_CARD_INSERTION:
+	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+	serial_config(link);
+	break;
+    case CS_EVENT_PM_SUSPEND:
+	link->state |= DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_RESET_PHYSICAL:
+	if ((link->state & DEV_CONFIG) && !info->slave)
+	    CardServices(ReleaseConfiguration, link->handle);
+	break;
+    case CS_EVENT_PM_RESUME:
+	link->state &= ~DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_CARD_RESET:
+	if (DEV_OK(link) && !info->slave)
+	    CardServices(RequestConfiguration, link->handle, &link->conf);
+	break;
+    }
+    return 0;
+} /* serial_event */
+
+/*====================================================================*/
+
+static int __init init_serial_cs(void)
+{
+    servinfo_t serv;
+    DEBUG(0, "%s\n", version);
+    CardServices(GetCardServicesInfo, &serv);
+    if (serv.Revision != CS_RELEASE_CODE) {
+	printk(KERN_NOTICE "serial_cs: Card Services release "
+	       "does not match!\n");
+	return -1;
+    }
+    register_pccard_driver(&dev_info, &serial_attach, &serial_detach);
+    return 0;
+}
+
+static void __exit exit_serial_cs(void)
+{
+    DEBUG(0, "serial_cs: unloading\n");
+    unregister_pccard_driver(&dev_info);
+    while (dev_list != NULL)
+	serial_detach(dev_list);
+}
+
+module_init(init_serial_cs);
+module_exit(exit_serial_cs);