Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 747 insertions, 0 deletions

diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
new file mode 100644
index 00000000000..9034f9ad37c
--- /dev/null
+++ b/drivers/serial/serial_cs.c
@@ -0,0 +1,747 @@
+/*======================================================================
+
+    A driver for PCMCIA serial devices
+
+    serial_cs.c 1.134 2002/05/04 05:48:53
+
+    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
+    <dahinds@users.sourceforge.net>.  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 General 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/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/serial_core.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>
+
+#include "8250.h"
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0644);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version = "serial_cs.c 1.134 2002/05/04 05:48:53 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+/* Enable the speaker? */
+static int do_sound = 1;
+/* Skip strict UART tests? */
+static int buggy_uart;
+
+module_param(do_sound, int, 0444);
+module_param(buggy_uart, int, 0444);
+
+/*====================================================================*/
+
+/* Table of multi-port card ID's */
+
+struct multi_id {
+	u_short manfid;
+	u_short prodid;
+	int multi;		/* 1 = multifunction, > 1 = # ports */
+};
+
+static struct multi_id 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(struct multi_id))
+
+struct serial_info {
+	dev_link_t		link;
+	int			ndev;
+	int			multi;
+	int			slave;
+	int			manfid;
+	dev_node_t		node[4];
+	int			line[4];
+};
+
+static void serial_config(dev_link_t * link);
+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;
+
+/*======================================================================
+
+    After a card is removed, serial_remove() will unregister
+    the serial device(s), and release the PCMCIA configuration.
+    
+======================================================================*/
+
+static void serial_remove(dev_link_t *link)
+{
+	struct serial_info *info = link->priv;
+	int i;
+
+	link->state &= ~DEV_PRESENT;
+
+	DEBUG(0, "serial_release(0x%p)\n", link);
+
+	/*
+	 * Recheck to see if the device is still configured.
+	 */
+	if (info->link.state & DEV_CONFIG) {
+		for (i = 0; i < info->ndev; i++)
+			serial8250_unregister_port(info->line[i]);
+
+		info->link.dev = NULL;
+
+		if (!info->slave) {
+			pcmcia_release_configuration(info->link.handle);
+			pcmcia_release_io(info->link.handle, &info->link.io);
+			pcmcia_release_irq(info->link.handle, &info->link.irq);
+		}
+
+		info->link.state &= ~DEV_CONFIG;
+	}
+}
+
+static void serial_suspend(dev_link_t *link)
+{
+	link->state |= DEV_SUSPEND;
+
+	if (link->state & DEV_CONFIG) {
+		struct serial_info *info = link->priv;
+		int i;
+
+		for (i = 0; i < info->ndev; i++)
+			serial8250_suspend_port(info->line[i]);
+
+		if (!info->slave)
+			pcmcia_release_configuration(link->handle);
+	}
+}
+
+static void serial_resume(dev_link_t *link)
+{
+	link->state &= ~DEV_SUSPEND;
+
+	if (DEV_OK(link)) {
+		struct serial_info *info = link->priv;
+		int i;
+
+		if (!info->slave)
+			pcmcia_request_configuration(link->handle, &link->conf);
+
+		for (i = 0; i < info->ndev; i++)
+			serial8250_resume_port(info->line[i]);
+	}
+}
+
+/*======================================================================
+
+    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)
+{
+	struct serial_info *info;
+	client_reg_t client_reg;
+	dev_link_t *link;
+	int ret;
+
+	DEBUG(0, "serial_attach()\n");
+
+	/* Create new serial device */
+	info = kmalloc(sizeof (*info), GFP_KERNEL);
+	if (!info)
+		return NULL;
+	memset(info, 0, sizeof (*info));
+	link = &info->link;
+	link->priv = info;
+
+	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+	link->io.NumPorts1 = 8;
+	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+	link->conf.Attributes = CONF_ENABLE_IRQ;
+	if (do_sound) {
+		link->conf.Attributes |= CONF_ENABLE_SPKR;
+		link->conf.Status = CCSR_AUDIO_ENA;
+	}
+	link->conf.IntType = INT_MEMORY_AND_IO;
+
+	/* 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 = &serial_event;
+	client_reg.Version = 0x0210;
+	client_reg.event_callback_args.client_data = link;
+	ret = pcmcia_register_client(&link->handle, &client_reg);
+	if (ret != CS_SUCCESS) {
+		cs_error(link->handle, RegisterClient, ret);
+		serial_detach(link);
+		return NULL;
+	}
+
+	return link;
+}
+
+/*======================================================================
+
+    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)
+{
+	struct serial_info *info = link->priv;
+	dev_link_t **linkp;
+	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;
+
+	/*
+	 * Ensure any outstanding scheduled tasks are completed.
+	 */
+	flush_scheduled_work();
+
+	/*
+	 * Ensure that the ports have been released.
+	 */
+	serial_remove(link);
+
+	if (link->handle) {
+		ret = pcmcia_deregister_client(link->handle);
+		if (ret != CS_SUCCESS)
+			cs_error(link->handle, DeregisterClient, ret);
+	}
+
+	/* Unlink device structure, free bits */
+	*linkp = link->next;
+	kfree(info);
+}
+
+/*====================================================================*/
+
+static int setup_serial(client_handle_t handle, struct serial_info * info,
+			kio_addr_t iobase, int irq)
+{
+	struct uart_port port;
+	int line;
+
+	memset(&port, 0, sizeof (struct uart_port));
+	port.iobase = iobase;
+	port.irq = irq;
+	port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+	port.uartclk = 1843200;
+	port.dev = &handle_to_dev(handle);
+	if (buggy_uart)
+		port.flags |= UPF_BUGGY_UART;
+	line = serial8250_register_port(&port);
+	if (line < 0) {
+		printk(KERN_NOTICE "serial_cs: serial8250_register_port() at "
+		       "0x%04lx, irq %d failed\n", (u_long)iobase, irq);
+		return -EINVAL;
+	}
+
+	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
+first_tuple(client_handle_t handle, tuple_t * tuple, cisparse_t * parse)
+{
+	int i;
+	i = pcmcia_get_first_tuple(handle, tuple);
+	if (i != CS_SUCCESS)
+		return CS_NO_MORE_ITEMS;
+	i = pcmcia_get_tuple_data(handle, tuple);
+	if (i != CS_SUCCESS)
+		return i;
+	return pcmcia_parse_tuple(handle, tuple, parse);
+}
+
+static int
+next_tuple(client_handle_t handle, tuple_t * tuple, cisparse_t * parse)
+{
+	int i;
+	i = pcmcia_get_next_tuple(handle, tuple);
+	if (i != CS_SUCCESS)
+		return CS_NO_MORE_ITEMS;
+	i = pcmcia_get_tuple_data(handle, tuple);
+	if (i != CS_SUCCESS)
+		return i;
+	return pcmcia_parse_tuple(handle, tuple, parse);
+}
+
+/*====================================================================*/
+
+static int simple_config(dev_link_t *link)
+{
+	static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+	static int size_table[2] = { 8, 16 };
+	client_handle_t handle = link->handle;
+	struct serial_info *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, try;
+	int s;
+
+	/* If the card is already configured, look up the port and irq */
+	i = pcmcia_get_configuration_info(handle, &config);
+	if ((i == CS_SUCCESS) && (config.Attributes & CONF_VALID_CLIENT)) {
+		kio_addr_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(handle, 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;
+	/* Two tries: without IO aliases, then with aliases */
+	for (s = 0; s < 2; s++) {
+		for (try = 0; try < 2; try++) {
+			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].len == size_table[s]) &&
+					    (cf->io.win[0].base != 0)) {
+					link->conf.ConfigIndex = cf->index;
+					link->io.BasePort1 = cf->io.win[0].base;
+					link->io.IOAddrLines = (try == 0) ?
+					    16 : cf->io.flags & CISTPL_IO_LINES_MASK;
+					i = pcmcia_request_io(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];
+				link->io.IOAddrLines = base[j] ? 16 : 3;
+				i = pcmcia_request_io(link->handle, &link->io);
+				if (i == CS_SUCCESS)
+					goto found_port;
+			}
+		}
+		i = next_tuple(handle, &tuple, &parse);
+	}
+
+      found_port:
+	if (i != CS_SUCCESS) {
+		printk(KERN_NOTICE
+		       "serial_cs: no usable port range found, giving up\n");
+		cs_error(link->handle, RequestIO, i);
+		return -1;
+	}
+
+	i = pcmcia_request_irq(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 = pcmcia_request_configuration(link->handle, &link->conf);
+	if (i != CS_SUCCESS) {
+		cs_error(link->handle, RequestConfiguration, i);
+		return -1;
+	}
+
+	return setup_serial(handle, info, link->io.BasePort1, link->irq.AssignedIRQ);
+}
+
+static int multi_config(dev_link_t * link)
+{
+	client_handle_t handle = link->handle;
+	struct serial_info *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, base2 = 0;
+
+	i = pcmcia_get_configuration_info(handle, &config);
+	if (i != CS_SUCCESS) {
+		cs_error(handle, GetConfigurationInfo, i);
+		return -1;
+	}
+	link->conf.Vcc = config.Vcc;
+
+	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 = pcmcia_request_io(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 = pcmcia_request_io(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 = pcmcia_request_irq(link->handle, &link->irq);
+	if (i != CS_SUCCESS) {
+		printk(KERN_NOTICE
+		       "serial_cs: no usable port range found, giving up\n");
+		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 = pcmcia_request_configuration(link->handle, &link->conf);
+	if (i != CS_SUCCESS) {
+		cs_error(link->handle, RequestConfiguration, i);
+		return -1;
+	}
+
+	/* The Oxford Semiconductor OXCF950 cards are in fact single-port:
+	   8 registers are for the UART, the others are extra registers */
+	if (info->manfid == MANFID_OXSEMI) {
+		if (cf->index == 1 || cf->index == 3) {
+			setup_serial(handle, info, base2, link->irq.AssignedIRQ);
+			outb(12, link->io.BasePort1 + 1);
+		} else {
+			setup_serial(handle, info, link->io.BasePort1, link->irq.AssignedIRQ);
+			outb(12, base2 + 1);
+		}
+		return 0;
+	}
+
+	setup_serial(handle, info, link->io.BasePort1, link->irq.AssignedIRQ);
+	/* The Nokia cards are not really multiport cards */
+	if (info->manfid == MANFID_NOKIA)
+		return 0;
+	for (i = 0; i < info->multi - 1; i++)
+		setup_serial(handle, 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.
+
+======================================================================*/
+
+void serial_config(dev_link_t * link)
+{
+	client_handle_t handle = link->handle;
+	struct serial_info *info = link->priv;
+	tuple_t tuple;
+	u_short buf[128];
+	cisparse_t parse;
+	cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+	int i, last_ret, last_fn;
+
+	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) {
+			if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0))
+				info->multi = cf->io.win[0].len >> 3;
+			if ((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 };
+		last_ret = pcmcia_access_configuration_register(link->handle, &reg);
+		if (last_ret) {
+			last_fn = AccessConfigurationRegister;
+			goto cs_failed;
+		}
+		reg.Action = CS_WRITE;
+		reg.Value = reg.Value | 1;
+		last_ret = pcmcia_access_configuration_register(link->handle, &reg);
+		if (last_ret) {
+			last_fn = AccessConfigurationRegister;
+			goto cs_failed;
+		}
+	}
+
+	link->dev = &info->node[0];
+	link->state &= ~DEV_CONFIG_PENDING;
+	return;
+
+ cs_failed:
+	cs_error(link->handle, last_fn, last_ret);
+ failed:
+	serial_remove(link);
+	link->state &= ~DEV_CONFIG_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 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;
+	struct serial_info *info = link->priv;
+
+	DEBUG(1, "serial_event(0x%06x)\n", event);
+
+	switch (event) {
+	case CS_EVENT_CARD_REMOVAL:
+		serial_remove(link);
+		break;
+
+	case CS_EVENT_CARD_INSERTION:
+		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+		serial_config(link);
+		break;
+
+	case CS_EVENT_PM_SUSPEND:
+		serial_suspend(link);
+		break;
+
+	case CS_EVENT_RESET_PHYSICAL:
+		if ((link->state & DEV_CONFIG) && !info->slave)
+			pcmcia_release_configuration(link->handle);
+		break;
+
+	case CS_EVENT_PM_RESUME:
+		serial_resume(link);
+		break;
+
+	case CS_EVENT_CARD_RESET:
+		if (DEV_OK(link) && !info->slave)
+			pcmcia_request_configuration(link->handle, &link->conf);
+		break;
+	}
+	return 0;
+}
+
+static struct pcmcia_driver serial_cs_driver = {
+	.owner		= THIS_MODULE,
+	.drv		= {
+		.name	= "serial_cs",
+	},
+	.attach		= serial_attach,
+	.detach		= serial_detach,
+};
+
+static int __init init_serial_cs(void)
+{
+	return pcmcia_register_driver(&serial_cs_driver);
+}
+
+static void __exit exit_serial_cs(void)
+{
+	pcmcia_unregister_driver(&serial_cs_driver);
+	BUG_ON(dev_list != NULL);
+}
+
+module_init(init_serial_cs);
+module_exit(exit_serial_cs);
+
+MODULE_LICENSE("GPL");