patch-2.4.20 linux-2.4.20/drivers/bluetooth/bt3c_cs.c

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diff -urN linux-2.4.19/drivers/bluetooth/bt3c_cs.c linux-2.4.20/drivers/bluetooth/bt3c_cs.c
@@ -0,0 +1,946 @@
+/*
+ *
+ *  Driver for the 3Com Bluetooth PCMCIA card
+ *
+ *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
+ *                           Jose Orlando Pereira <jop@di.uminho.pt>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation;
+ *
+ *  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.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#define __KERNEL_SYSCALLS__
+
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/io.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 <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+/* Bit map of interrupts to choose from */
+static u_int irq_mask = 0xffff;
+static int irq_list[4] = { -1 };
+
+MODULE_PARM(irq_mask, "i");
+MODULE_PARM(irq_list, "1-4i");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>");
+MODULE_DESCRIPTION("BlueZ driver for the 3Com Bluetooth PCMCIA card");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+typedef struct bt3c_info_t {
+	dev_link_t link;
+	dev_node_t node;
+
+	struct hci_dev hdev;
+
+	spinlock_t lock;		/* For serializing operations */
+
+	struct sk_buff_head txq;
+	unsigned long tx_state;
+
+	unsigned long rx_state;
+	unsigned long rx_count;
+	struct sk_buff *rx_skb;
+} bt3c_info_t;
+
+
+void bt3c_config(dev_link_t *link);
+void bt3c_release(u_long arg);
+int bt3c_event(event_t event, int priority, event_callback_args_t *args);
+
+static dev_info_t dev_info = "bt3c_cs";
+
+dev_link_t *bt3c_attach(void);
+void bt3c_detach(dev_link_t *);
+
+static dev_link_t *dev_list = NULL;
+
+
+/* Transmit states  */
+#define XMIT_SENDING  1
+#define XMIT_WAKEUP   2
+#define XMIT_WAITING  8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE   0
+#define RECV_WAIT_EVENT_HEADER  1
+#define RECV_WAIT_ACL_HEADER    2
+#define RECV_WAIT_SCO_HEADER    3
+#define RECV_WAIT_DATA          4
+
+
+
+/* ======================== Special I/O functions ======================== */
+
+
+#define DATA_L   0
+#define DATA_H   1
+#define ADDR_L   2
+#define ADDR_H   3
+#define CONTROL  4
+
+
+inline void bt3c_address(unsigned int iobase, unsigned short addr)
+{
+	outb(addr & 0xff, iobase + ADDR_L);
+	outb((addr >> 8) & 0xff, iobase + ADDR_H);
+}
+
+
+inline void bt3c_put(unsigned int iobase, unsigned short value)
+{
+	outb(value & 0xff, iobase + DATA_L);
+	outb((value >> 8) & 0xff, iobase + DATA_H);
+}
+
+
+inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
+{
+	bt3c_address(iobase, addr);
+	bt3c_put(iobase, value);
+}
+
+
+inline unsigned short bt3c_get(unsigned int iobase)
+{
+	unsigned short value = inb(iobase + DATA_L);
+
+	value |= inb(iobase + DATA_H) << 8;
+
+	return value;
+}
+
+
+inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
+{
+	bt3c_address(iobase, addr);
+
+	return bt3c_get(iobase);
+}
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+	int actual = 0;
+
+	bt3c_address(iobase, 0x7080);
+
+	/* Fill FIFO with current frame */
+	while (actual < len) {
+		/* Transmit next byte */
+		bt3c_put(iobase, buf[actual]);
+		actual++;
+	}
+
+	bt3c_io_write(iobase, 0x7005, actual);
+
+	return actual;
+}
+
+
+static void bt3c_write_wakeup(bt3c_info_t *info, int from)
+{
+	unsigned long flags;
+
+	if (!info) {
+		printk(KERN_WARNING "bt3c_cs: Call of write_wakeup for unknown device.\n");
+		return;
+	}
+
+	if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
+		return;
+
+	spin_lock_irqsave(&(info->lock), flags);
+
+	do {
+		register unsigned int iobase = info->link.io.BasePort1;
+		register struct sk_buff *skb;
+		register int len;
+
+		if (!(info->link.state & DEV_PRESENT))
+			break;
+
+
+		if (!(skb = skb_dequeue(&(info->txq)))) {
+			clear_bit(XMIT_SENDING, &(info->tx_state));
+			break;
+		}
+
+		/* Send frame */
+		len = bt3c_write(iobase, 256, skb->data, skb->len);
+
+		if (len != skb->len) {
+			printk(KERN_WARNING "bt3c_cs: very strange\n");
+		}
+
+		kfree_skb(skb);
+
+		info->hdev.stat.byte_tx += len;
+
+	} while (0);
+
+	spin_unlock_irqrestore(&(info->lock), flags);
+}
+
+
+static void bt3c_receive(bt3c_info_t *info)
+{
+	unsigned int iobase;
+	int size = 0, avail;
+
+	if (!info) {
+		printk(KERN_WARNING "bt3c_cs: Call of receive for unknown device.\n");
+		return;
+	}
+
+	iobase = info->link.io.BasePort1;
+
+	avail = bt3c_read(iobase, 0x7006);
+	//printk("bt3c_cs: receiving %d bytes\n", avail);
+
+	bt3c_address(iobase, 0x7480);
+	while (size < avail) {
+		size++;
+		info->hdev.stat.byte_rx++;
+
+		/* Allocate packet */
+		if (info->rx_skb == NULL) {
+			info->rx_state = RECV_WAIT_PACKET_TYPE;
+			info->rx_count = 0;
+			if (!(info->rx_skb = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
+				printk(KERN_WARNING "bt3c_cs: Can't allocate mem for new packet.\n");
+				return;
+			}
+		}
+
+
+		if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+			info->rx_skb->dev = (void *)&(info->hdev);
+			info->rx_skb->pkt_type = inb(iobase + DATA_L);
+			inb(iobase + DATA_H);
+			//printk("bt3c: PACKET_TYPE=%02x\n", info->rx_skb->pkt_type);
+
+			switch (info->rx_skb->pkt_type) {
+
+			case HCI_EVENT_PKT:
+				info->rx_state = RECV_WAIT_EVENT_HEADER;
+				info->rx_count = HCI_EVENT_HDR_SIZE;
+				break;
+
+			case HCI_ACLDATA_PKT:
+				info->rx_state = RECV_WAIT_ACL_HEADER;
+				info->rx_count = HCI_ACL_HDR_SIZE;
+				break;
+
+			case HCI_SCODATA_PKT:
+				info->rx_state = RECV_WAIT_SCO_HEADER;
+				info->rx_count = HCI_SCO_HDR_SIZE;
+				break;
+
+			default:
+				/* Unknown packet */
+				printk(KERN_WARNING "bt3c_cs: Unknown HCI packet with type 0x%02x received.\n", info->rx_skb->pkt_type);
+				info->hdev.stat.err_rx++;
+				clear_bit(HCI_RUNNING, &(info->hdev.flags));
+
+				kfree_skb(info->rx_skb);
+				info->rx_skb = NULL;
+				break;
+
+			}
+
+		} else {
+
+			__u8 x = inb(iobase + DATA_L);
+
+			*skb_put(info->rx_skb, 1) = x;
+			inb(iobase + DATA_H);
+			info->rx_count--;
+
+			if (info->rx_count == 0) {
+
+				int dlen;
+				hci_event_hdr *eh;
+				hci_acl_hdr *ah;
+				hci_sco_hdr *sh;
+
+				switch (info->rx_state) {
+
+				case RECV_WAIT_EVENT_HEADER:
+					eh = (hci_event_hdr *)(info->rx_skb->data);
+					info->rx_state = RECV_WAIT_DATA;
+					info->rx_count = eh->plen;
+					break;
+
+				case RECV_WAIT_ACL_HEADER:
+					ah = (hci_acl_hdr *)(info->rx_skb->data);
+					dlen = __le16_to_cpu(ah->dlen);
+					info->rx_state = RECV_WAIT_DATA;
+					info->rx_count = dlen;
+					break;
+
+				case RECV_WAIT_SCO_HEADER:
+					sh = (hci_sco_hdr *)(info->rx_skb->data);
+					info->rx_state = RECV_WAIT_DATA;
+					info->rx_count = sh->dlen;
+					break;
+
+				case RECV_WAIT_DATA:
+					hci_recv_frame(info->rx_skb);
+					info->rx_skb = NULL;
+					break;
+
+				}
+
+			}
+
+		}
+
+	}
+
+	bt3c_io_write(iobase, 0x7006, 0x0000);
+}
+
+
+void bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
+{
+	bt3c_info_t *info = dev_inst;
+	unsigned int iobase;
+	int iir;
+
+	if (!info) {
+		printk(KERN_WARNING "bt3c_cs: Call of irq %d for unknown device.\n", irq);
+		return;
+	}
+
+	iobase = info->link.io.BasePort1;
+
+	spin_lock(&(info->lock));
+
+	iir = inb(iobase + CONTROL);
+	if (iir & 0x80) {
+		int stat = bt3c_read(iobase, 0x7001);
+
+		if ((stat & 0xff) == 0x7f) {
+			printk(KERN_WARNING "bt3c_cs: STRANGE stat=%04x\n", stat);
+		} else if ((stat & 0xff) != 0xff) {
+			if (stat & 0x0020) {
+				int stat = bt3c_read(iobase, 0x7002) & 0x10;
+				printk(KERN_WARNING "bt3c_cs: antena %s\n", stat ? "OUT" : "IN");
+			}
+			if (stat & 0x0001)
+				bt3c_receive(info);
+			if (stat & 0x0002) {
+				//printk("bt3c_cs: ACK %04x\n", stat);
+				clear_bit(XMIT_SENDING, &(info->tx_state));
+				bt3c_write_wakeup(info, 1);
+			}
+
+			bt3c_io_write(iobase, 0x7001, 0x0000);
+
+			outb(iir, iobase + CONTROL);
+		}
+	}
+
+	spin_unlock(&(info->lock));
+}
+
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int bt3c_hci_flush(struct hci_dev *hdev)
+{
+	bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data);
+
+	/* Drop TX queue */
+	skb_queue_purge(&(info->txq));
+
+	return 0;
+}
+
+
+static int bt3c_hci_open(struct hci_dev *hdev)
+{
+	set_bit(HCI_RUNNING, &(hdev->flags));
+
+	return 0;
+}
+
+
+static int bt3c_hci_close(struct hci_dev *hdev)
+{
+	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
+		return 0;
+
+	bt3c_hci_flush(hdev);
+
+	return 0;
+}
+
+
+static int bt3c_hci_send_frame(struct sk_buff *skb)
+{
+	bt3c_info_t *info;
+	struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
+
+	if (!hdev) {
+		printk(KERN_WARNING "bt3c_cs: Frame for unknown HCI device (hdev=NULL).");
+		return -ENODEV;
+	}
+
+	info = (bt3c_info_t *) (hdev->driver_data);
+
+	switch (skb->pkt_type) {
+	case HCI_COMMAND_PKT:
+		hdev->stat.cmd_tx++;
+		break;
+	case HCI_ACLDATA_PKT:
+		hdev->stat.acl_tx++;
+		break;
+	case HCI_SCODATA_PKT:
+		hdev->stat.sco_tx++;
+		break;
+	};
+
+	/* Prepend skb with frame type */
+	memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
+	skb_queue_tail(&(info->txq), skb);
+
+	bt3c_write_wakeup(info, 0);
+
+	return 0;
+}
+
+
+static void bt3c_hci_destruct(struct hci_dev *hdev)
+{
+}
+
+
+static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
+{
+	return -ENOIOCTLCMD;
+}
+
+
+
+/* ======================== User mode firmware loader ======================== */
+
+
+#define FW_LOADER  "/sbin/bluefw"
+static int errno;
+
+
+static int bt3c_fw_loader_exec(void *dev)
+{
+	char *argv[] = { FW_LOADER, "pccard", dev, NULL };
+	char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
+	int err;
+
+	err = exec_usermodehelper(FW_LOADER, argv, envp);
+	if (err)
+		printk(KERN_WARNING "bt3c_cs: Failed to exec \"%s pccard %s\".\n", FW_LOADER, (char *)dev);
+
+	return err;
+}
+
+
+static int bt3c_firmware_load(bt3c_info_t *info)
+{
+	sigset_t tmpsig;
+	char dev[16];
+	pid_t pid;
+	int result;
+
+	/* Check if root fs is mounted */
+	if (!current->fs->root) {
+		printk(KERN_WARNING "bt3c_cs: Root filesystem is not mounted.\n");
+		return -EPERM;
+	}
+
+	sprintf(dev, "%04x", info->link.io.BasePort1);
+
+	pid = kernel_thread(bt3c_fw_loader_exec, (void *)dev, 0);
+	if (pid < 0) {
+		printk(KERN_WARNING "bt3c_cs: Forking of kernel thread failed (errno=%d).\n", -pid);
+		return pid;
+	}
+
+	/* Block signals, everything but SIGKILL/SIGSTOP */
+	spin_lock_irq(&current->sigmask_lock);
+	tmpsig = current->blocked;
+	siginitsetinv(&current->blocked, sigmask(SIGKILL) | sigmask(SIGSTOP));
+	recalc_sigpending(current);
+	spin_unlock_irq(&current->sigmask_lock);
+
+	result = waitpid(pid, NULL, __WCLONE);
+
+	/* Allow signals again */
+	spin_lock_irq(&current->sigmask_lock);
+	current->blocked = tmpsig;
+	recalc_sigpending(current);
+	spin_unlock_irq(&current->sigmask_lock);
+
+	if (result != pid) {
+		printk(KERN_WARNING "bt3c_cs: Waiting for pid %d failed (errno=%d).\n", pid, -result);
+		return -result;
+	}
+
+	return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+int bt3c_open(bt3c_info_t *info)
+{
+	struct hci_dev *hdev;
+	int err;
+
+	spin_lock_init(&(info->lock));
+
+	skb_queue_head_init(&(info->txq));
+
+	info->rx_state = RECV_WAIT_PACKET_TYPE;
+	info->rx_count = 0;
+	info->rx_skb = NULL;
+
+	/* Load firmware */
+
+	if ((err = bt3c_firmware_load(info)) < 0)
+		return err;
+
+	/* Timeout before it is safe to send the first HCI packet */
+
+	set_current_state(TASK_INTERRUPTIBLE);
+	schedule_timeout(HZ);
+
+
+	/* Initialize and register HCI device */
+
+	hdev = &(info->hdev);
+
+	hdev->type = HCI_PCCARD;
+	hdev->driver_data = info;
+
+	hdev->open = bt3c_hci_open;
+	hdev->close = bt3c_hci_close;
+	hdev->flush = bt3c_hci_flush;
+	hdev->send = bt3c_hci_send_frame;
+	hdev->destruct = bt3c_hci_destruct;
+	hdev->ioctl = bt3c_hci_ioctl;
+
+	if (hci_register_dev(hdev) < 0) {
+		printk(KERN_WARNING "bt3c_cs: Can't register HCI device %s.\n", hdev->name);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+
+int bt3c_close(bt3c_info_t *info)
+{
+	struct hci_dev *hdev = &(info->hdev);
+
+	bt3c_hci_close(hdev);
+
+	if (hci_unregister_dev(hdev) < 0)
+		printk(KERN_WARNING "bt3c_cs: Can't unregister HCI device %s.\n", hdev->name);
+
+	return 0;
+}
+
+
+
+/* ======================== Card services ======================== */
+
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+	error_info_t err = { func, ret };
+
+	CardServices(ReportError, handle, &err);
+}
+
+
+dev_link_t *bt3c_attach(void)
+{
+	bt3c_info_t *info;
+	client_reg_t client_reg;
+	dev_link_t *link;
+	int i, ret;
+
+	/* Create new info device */
+	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return NULL;
+	memset(info, 0, sizeof(*info));
+
+	link = &info->link;
+	link->priv = info;
+
+	link->release.function = &bt3c_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 | IRQ_HANDLE_PRESENT;
+	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->irq.Handler = bt3c_interrupt;
+	link->irq.Instance = info;
+
+	link->conf.Attributes = CONF_ENABLE_IRQ;
+	link->conf.Vcc = 50;
+	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.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 = &bt3c_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);
+		bt3c_detach(link);
+		return NULL;
+	}
+
+	return link;
+}
+
+
+void bt3c_detach(dev_link_t *link)
+{
+	bt3c_info_t *info = link->priv;
+	dev_link_t **linkp;
+	int ret;
+
+	/* Locate device structure */
+	for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+		if (*linkp == link)
+			break;
+
+	if (*linkp == NULL)
+		return;
+
+	del_timer(&link->release);
+
+	if (link->state & DEV_CONFIG)
+		bt3c_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(info);
+}
+
+
+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)
+
+void bt3c_config(dev_link_t *link)
+{
+	static ioaddr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+	client_handle_t handle = link->handle;
+	bt3c_info_t *info = link->priv;
+	tuple_t tuple;
+	u_short buf[256];
+	cisparse_t parse;
+	cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+	config_info_t config;
+	int i, j, try, last_ret, last_fn;
+
+	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;
+	i = CardServices(GetConfigurationInfo, handle, &config);
+	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 (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 == 8) && (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 = 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];
+				link->io.IOAddrLines = base[j] ? 16 : 3;
+				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) {
+		printk(KERN_NOTICE "bt3c_cs: No usable port range found. Giving up.\n");
+		cs_error(link->handle, RequestIO, i);
+		goto failed;
+	}
+
+	i = CardServices(RequestIRQ, link->handle, &link->irq);
+	if (i != CS_SUCCESS) {
+		cs_error(link->handle, RequestIRQ, i);
+		link->irq.AssignedIRQ = 0;
+	}
+
+	i = CardServices(RequestConfiguration, link->handle, &link->conf);
+	if (i != CS_SUCCESS) {
+		cs_error(link->handle, RequestConfiguration, i);
+		goto failed;
+	}
+
+	MOD_INC_USE_COUNT;
+
+	if (bt3c_open(info) != 0)
+		goto failed;
+
+	strcpy(info->node.dev_name, info->hdev.name);
+	link->dev = &info->node;
+	link->state &= ~DEV_CONFIG_PENDING;
+
+	return;
+
+cs_failed:
+	cs_error(link->handle, last_fn, last_ret);
+
+failed:
+	bt3c_release((u_long)link);
+}
+
+
+void bt3c_release(u_long arg)
+{
+	dev_link_t *link = (dev_link_t *)arg;
+	bt3c_info_t *info = link->priv;
+
+	if (link->state & DEV_PRESENT)
+		bt3c_close(info);
+
+	MOD_DEC_USE_COUNT;
+
+	link->dev = NULL;
+
+	CardServices(ReleaseConfiguration, link->handle);
+	CardServices(ReleaseIO, link->handle, &link->io);
+	CardServices(ReleaseIRQ, link->handle, &link->irq);
+
+	link->state &= ~DEV_CONFIG;
+}
+
+
+int bt3c_event(event_t event, int priority, event_callback_args_t *args)
+{
+	dev_link_t *link = args->client_data;
+	bt3c_info_t *info = link->priv;
+
+	switch (event) {
+	case CS_EVENT_CARD_REMOVAL:
+		link->state &= ~DEV_PRESENT;
+		if (link->state & DEV_CONFIG) {
+			bt3c_close(info);
+			mod_timer(&link->release, jiffies + HZ / 20);
+		}
+		break;
+	case CS_EVENT_CARD_INSERTION:
+		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+		bt3c_config(link);
+		break;
+	case CS_EVENT_PM_SUSPEND:
+		link->state |= DEV_SUSPEND;
+		/* Fall through... */
+	case CS_EVENT_RESET_PHYSICAL:
+		if (link->state & DEV_CONFIG)
+			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))
+			CardServices(RequestConfiguration, link->handle, &link->conf);
+		break;
+	}
+
+	return 0;
+}
+
+
+
+/* ======================== Module initialization ======================== */
+
+
+int __init init_bt3c_cs(void)
+{
+	servinfo_t serv;
+	int err;
+
+	CardServices(GetCardServicesInfo, &serv);
+	if (serv.Revision != CS_RELEASE_CODE) {
+		printk(KERN_NOTICE "bt3c_cs: Card Services release does not match!\n");
+		return -1;
+	}
+
+	err = register_pccard_driver(&dev_info, &bt3c_attach, &bt3c_detach);
+
+	return err;
+}
+
+
+void __exit exit_bt3c_cs(void)
+{
+	unregister_pccard_driver(&dev_info);
+
+	while (dev_list != NULL)
+		bt3c_detach(dev_list);
+}
+
+
+module_init(init_bt3c_cs);
+module_exit(exit_bt3c_cs);
+
+EXPORT_NO_SYMBOLS;

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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)