patch-2.4.19 linux-2.4.19/drivers/bluetooth/dtl1_cs.c

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diff -urN linux-2.4.18/drivers/bluetooth/dtl1_cs.c linux-2.4.19/drivers/bluetooth/dtl1_cs.c
@@ -0,0 +1,939 @@
+/*
+ *
+ *  A driver for Nokia Connectivity Card DTL-1 devices
+ *
+ *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  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>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/errno.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>");
+MODULE_DESCRIPTION("BlueZ driver for Nokia Connectivity Card DTL-1");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+typedef struct dtl1_info_t {
+  dev_link_t link;
+  dev_node_t node;
+
+  struct hci_dev hdev;
+
+  spinlock_t lock;          /* For serializing operations */
+
+  unsigned long flowmask;   /* HCI flow mask */
+  int ri_latch;
+
+  struct sk_buff_head txq;
+  unsigned long tx_state;
+
+  unsigned long rx_state;
+  unsigned long rx_count;
+  struct sk_buff *rx_skb;
+
+} dtl1_info_t;
+
+
+void dtl1_config(dev_link_t *link);
+void dtl1_release(u_long arg);
+int dtl1_event(event_t event, int priority, event_callback_args_t *args);
+
+static dev_info_t dev_info = "dtl1_cs";
+
+dev_link_t *dtl1_attach(void);
+void dtl1_detach(dev_link_t *);
+
+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_NSH   0
+#define RECV_WAIT_DATA  1
+
+
+typedef struct {
+  u8 type;
+  u8 zero;
+  u16 len;
+} __attribute__ ((packed)) nsh_t;   /* Nokia Specific Header */
+
+#define NSHL  4    /* Nokia Specific Header Length */
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) {
+
+  int actual = 0;
+
+
+  /* Tx FIFO should be empty */
+  if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
+    return 0;
+
+
+  /* Fill FIFO with current frame */
+  while ((fifo_size-- > 0) && (actual < len)) {
+    /* Transmit next byte */
+    outb(buf[actual], iobase + UART_TX);
+    actual++;
+  }
+
+
+  return actual;
+
+}
+
+
+static void dtl1_write_wakeup(dtl1_info_t *info) {
+
+  if (!info) {
+    printk(KERN_WARNING "dtl1_cs: Call of write_wakeup for unknown device.\n");
+    return;
+  }
+
+
+  if (test_bit(XMIT_WAITING, &(info->tx_state))) {
+    set_bit(XMIT_WAKEUP, &(info->tx_state));
+    return;
+  }
+
+  if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
+    set_bit(XMIT_WAKEUP, &(info->tx_state));
+    return;
+  }
+
+
+  do {
+    register unsigned int iobase = info->link.io.BasePort1;
+    register struct sk_buff *skb;
+    register int len;
+
+    clear_bit(XMIT_WAKEUP, &(info->tx_state));
+
+    if (!(info->link.state & DEV_PRESENT))
+      return;
+
+
+    if (!(skb = skb_dequeue(&(info->txq))))
+      break;
+
+
+    /* Send frame */
+    len = dtl1_write(iobase, 32, skb->data, skb->len);
+
+    if (len == skb->len) {
+      set_bit(XMIT_WAITING, &(info->tx_state));
+      kfree_skb(skb);
+    }
+    else {
+      skb_pull(skb, len);
+      skb_queue_head(&(info->txq), skb);
+    }
+
+    info->hdev.stat.byte_tx += len;
+
+  } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
+
+
+  clear_bit(XMIT_SENDING, &(info->tx_state));
+
+}
+
+
+static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb) {
+
+  u8 flowmask = *(u8 *)skb->data;
+  int i;
+
+
+  printk(KERN_INFO "dtl1_cs: Nokia control data = ");
+  for (i = 0; i < skb->len; i++) {
+    printk("%02x ", skb->data[i]);
+  }
+  printk("\n");
+
+
+  /* transition to active state */
+  if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
+    clear_bit(XMIT_WAITING, &(info->tx_state));
+    dtl1_write_wakeup(info);
+  }
+
+  info->flowmask = flowmask;
+
+
+  kfree_skb(skb);
+
+}
+
+
+static void dtl1_receive(dtl1_info_t *info) {
+
+  unsigned int iobase;
+  nsh_t *nsh;
+  int boguscount = 0;
+
+
+  if (!info) {
+    printk(KERN_WARNING "dtl1_cs: Call of receive for unknown device.\n");
+    return;
+  }
+
+
+  iobase = info->link.io.BasePort1;
+
+  do {
+    info->hdev.stat.byte_rx++;
+
+    /* Allocate packet */
+    if (info->rx_skb == NULL)
+      if (!(info->rx_skb = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
+        printk(KERN_WARNING "dtl1_cs: Can't allocate mem for new packet.\n");
+        info->rx_state = RECV_WAIT_NSH;
+        info->rx_count = NSHL;
+        return;
+    }
+
+
+    *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+    nsh = (nsh_t *)info->rx_skb->data;
+
+    info->rx_count--;
+
+
+    if (info->rx_count == 0) {
+
+      switch (info->rx_state) {
+      case RECV_WAIT_NSH:
+        info->rx_state = RECV_WAIT_DATA;
+        info->rx_count = nsh->len + (nsh->len & 0x0001);
+        break;
+      case RECV_WAIT_DATA:
+        info->rx_skb->pkt_type = nsh->type;
+
+        /* remove PAD byte if it exists */
+        if (nsh->len & 0x0001) {
+          info->rx_skb->tail--;
+          info->rx_skb->len--;
+        }
+
+        /* remove NSH */
+        skb_pull(info->rx_skb, NSHL);
+
+
+        switch (info->rx_skb->pkt_type) {
+        case 0x80:
+          /* control data for the Nokia Card */
+          dtl1_control(info, info->rx_skb);
+          break;
+        case 0x82:
+        case 0x83:
+        case 0x84:
+          /* send frame to the HCI layer */
+          info->rx_skb->dev = (void *)&(info->hdev);
+          info->rx_skb->pkt_type &= 0x0f;
+          hci_recv_frame(info->rx_skb);
+          break;
+        default:
+          /* unknown packet */
+          printk(KERN_WARNING "dtl1_cs: Unknown HCI packet with type 0x%02x received.\n", info->rx_skb->pkt_type);
+          kfree_skb(info->rx_skb);
+          break;
+        }
+
+
+        info->rx_state = RECV_WAIT_NSH;
+        info->rx_count = NSHL;
+        info->rx_skb = NULL;
+        break;
+      }
+
+    }
+
+
+    /* Make sure we don't stay here to long */
+    if (boguscount++ > 32)
+      break;
+
+  } while (inb(iobase + UART_LSR) & UART_LSR_DR);
+
+
+}
+
+
+void dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs) {
+
+  dtl1_info_t *info = dev_inst;
+  unsigned int iobase;
+  unsigned char msr;
+  int boguscount = 0;
+  int iir, lsr;
+
+
+  if (!info) {
+    printk(KERN_WARNING "dtl1_cs: Call of irq %d for unknown device.\n", irq);
+    return;
+  }
+
+
+  iobase = info->link.io.BasePort1;
+
+
+  spin_lock(&(info->lock));
+
+  iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+  while (iir) {
+
+    /* Clear interrupt */
+    lsr = inb(iobase + UART_LSR);
+
+    switch (iir) {
+    case UART_IIR_RLSI:
+      printk(KERN_NOTICE "dtl1_cs: RLSI\n");
+      break;
+    case UART_IIR_RDI:
+      /* Receive interrupt */
+      dtl1_receive(info);
+      break;
+    case UART_IIR_THRI:
+      if (lsr & UART_LSR_THRE) {
+        /* Transmitter ready for data */
+        dtl1_write_wakeup(info);
+      }
+      break;
+    default:
+      printk(KERN_NOTICE "dtl1_cs: Unhandled IIR=%#x\n", iir);
+      break;
+    }
+
+    /* Make sure we don't stay here to long */
+    if (boguscount++ > 100)
+      break;
+
+    iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+
+  }
+
+
+  msr = inb(iobase + UART_MSR);
+
+  if (info->ri_latch ^ (msr & UART_MSR_RI)) {
+    info->ri_latch = msr & UART_MSR_RI;
+    clear_bit(XMIT_WAITING, &(info->tx_state));
+    dtl1_write_wakeup(info);
+  }
+
+  spin_unlock(&(info->lock));
+
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int dtl1_hci_open(struct hci_dev *hdev) {
+
+  set_bit(HCI_RUNNING, &(hdev->flags));
+
+
+  return 0;
+
+}
+
+
+static int dtl1_hci_flush(struct hci_dev *hdev) {
+
+  dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
+
+
+  /* Drop TX queue */
+  skb_queue_purge(&(info->txq));
+
+
+  return 0;
+
+}
+
+
+static int dtl1_hci_close(struct hci_dev *hdev) {
+
+  if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
+    return 0;
+
+
+  dtl1_hci_flush(hdev);
+
+
+  return 0;
+
+}
+
+
+static int dtl1_hci_send_frame(struct sk_buff *skb) {
+
+  dtl1_info_t *info;
+  struct hci_dev* hdev = (struct hci_dev *)(skb->dev);
+  struct sk_buff *s;
+  nsh_t nsh;
+
+
+  if (!hdev) {
+    printk(KERN_WARNING "dtl1_cs: Frame for unknown HCI device (hdev=NULL).");
+    return -ENODEV;
+  }
+
+  info = (dtl1_info_t *)(hdev->driver_data);
+
+
+  switch (skb->pkt_type) {
+  case HCI_COMMAND_PKT:
+    hdev->stat.cmd_tx++;
+    nsh.type = 0x81;
+    break;
+  case HCI_ACLDATA_PKT:
+    hdev->stat.acl_tx++;
+    nsh.type = 0x82;
+    break;
+  case HCI_SCODATA_PKT:
+    hdev->stat.sco_tx++;
+    nsh.type = 0x83;
+    break;
+  };
+
+  nsh.zero = 0;
+  nsh.len = skb->len;
+
+  s = bluez_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
+  skb_reserve(s, NSHL);
+  memcpy(skb_put(s, skb->len), skb->data, skb->len);
+  if (skb->len & 0x0001)
+    *skb_put(s, 1) = 0;  /* PAD */
+
+  /* Prepend skb with Nokia frame header and queue */
+  memcpy(skb_push(s, NSHL), &nsh, NSHL);
+  skb_queue_tail(&(info->txq), s);
+
+
+  dtl1_write_wakeup(info);
+
+  kfree_skb(skb);
+
+
+  return 0;
+
+}
+
+
+static void dtl1_hci_destruct(struct hci_dev *hdev) {
+}
+
+
+static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) {
+
+  return -ENOIOCTLCMD;
+
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+int dtl1_open(dtl1_info_t *info) {
+
+  unsigned long flags;
+  unsigned int iobase = info->link.io.BasePort1;
+  struct hci_dev *hdev;
+
+
+  spin_lock_init(&(info->lock));
+
+  skb_queue_head_init(&(info->txq));
+
+  info->rx_state = RECV_WAIT_NSH;
+  info->rx_count = NSHL;
+  info->rx_skb = NULL;
+
+  set_bit(XMIT_WAITING, &(info->tx_state));
+
+
+  spin_lock_irqsave(&(info->lock), flags);
+
+  /* Reset UART */
+  outb(0, iobase + UART_MCR);
+
+  /* Turn off interrupts */
+  outb(0, iobase + UART_IER);
+
+  /* Initialize UART */
+  outb(UART_LCR_WLEN8, iobase + UART_LCR);  /* Reset DLAB */
+  outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
+
+  info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
+
+  /* Turn on interrupts */
+  outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+  spin_unlock_irqrestore(&(info->lock), flags);
+
+
+  /* Timeout before it is safe to send the first HCI packet */
+  set_current_state(TASK_INTERRUPTIBLE);
+  schedule_timeout(HZ * 2);
+
+
+  /* Initialize and register HCI device */
+
+  hdev = &(info->hdev);
+
+  hdev->type = HCI_PCCARD;
+  hdev->driver_data = info;
+
+  hdev->open     = dtl1_hci_open;
+  hdev->close    = dtl1_hci_close;
+  hdev->flush    = dtl1_hci_flush;
+  hdev->send     = dtl1_hci_send_frame;
+  hdev->destruct = dtl1_hci_destruct;
+  hdev->ioctl    = dtl1_hci_ioctl;
+
+  if (hci_register_dev(hdev) < 0) {
+    printk(KERN_WARNING "dtl1_cs: Can't register HCI device %s.\n", hdev->name);
+    return -ENODEV;
+  }
+
+
+  return 0;
+
+}
+
+
+int dtl1_close(dtl1_info_t *info) {
+
+  unsigned long flags;
+  unsigned int iobase = info->link.io.BasePort1;
+  struct hci_dev *hdev = &(info->hdev);
+
+
+  dtl1_hci_close(hdev);
+
+
+  spin_lock_irqsave(&(info->lock), flags);
+
+  /* Reset UART */
+  outb(0, iobase + UART_MCR);
+
+  /* Turn off interrupts */
+  outb(0, iobase + UART_IER);
+
+  spin_unlock_irqrestore(&(info->lock), flags);
+
+
+  if (hci_unregister_dev(hdev) < 0)
+    printk(KERN_WARNING "dtl1_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 *dtl1_attach(void) {
+
+  dtl1_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 = &dtl1_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 = dtl1_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 = &dtl1_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);
+    dtl1_detach(link);
+    return NULL;
+  }
+
+
+  return link;
+
+}
+
+
+void dtl1_detach(dev_link_t *link) {
+
+  dtl1_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)
+    dtl1_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 dtl1_config(dev_link_t *link) {
+
+  client_handle_t handle = link->handle;
+  dtl1_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, 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;
+
+  tuple.TupleData = (cisdata_t *)buf;
+  tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
+  tuple.Attributes = 0;
+  tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+
+  /* Look for a generic full-sized window */
+  link->io.NumPorts1 = 8;
+  i = first_tuple(handle, &tuple, &parse);
+  while (i != CS_NO_MORE_ITEMS) {
+    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.NumPorts1 = cf->io.win[0].len; /*yo*/
+      link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
+      i = CardServices(RequestIO, link->handle, &link->io);
+      if (i == CS_SUCCESS)
+        break;
+    }
+    i = next_tuple(handle, &tuple, &parse);
+  }
+
+  if (i != CS_SUCCESS) {
+    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 (dtl1_open(info) != 0)
+    goto failed;
+
+
+  link->dev = &info->node;
+  link->state &= ~DEV_CONFIG_PENDING;
+
+
+  return;
+
+
+cs_failed:
+  cs_error(link->handle, last_fn, last_ret);
+failed:
+  dtl1_release((u_long)link);
+
+}
+
+
+void dtl1_release(u_long arg) {
+
+  dev_link_t *link = (dev_link_t *)arg;
+  dtl1_info_t *info = link->priv;
+
+
+  if (link->state & DEV_PRESENT)
+    dtl1_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 dtl1_event(event_t event, int priority, event_callback_args_t *args) {
+
+  dev_link_t *link = args->client_data;
+  dtl1_info_t *info = link->priv;
+
+
+  switch (event) {
+  case CS_EVENT_CARD_REMOVAL:
+    link->state &= ~DEV_PRESENT;
+    if (link->state & DEV_CONFIG) {
+      dtl1_close(info);
+      mod_timer(&link->release, jiffies + HZ/20);
+    }
+    break;
+  case CS_EVENT_CARD_INSERTION:
+    link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+    dtl1_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_dtl1_cs(void) {
+
+  servinfo_t serv;
+  int err;
+
+
+  CardServices(GetCardServicesInfo, &serv);
+  if (serv.Revision != CS_RELEASE_CODE) {
+    printk(KERN_NOTICE "dtl1_cs: Card Services release does not match!\n");
+    return -1;
+  }
+
+
+  err = register_pccard_driver(&dev_info, &dtl1_attach, &dtl1_detach);
+
+
+  return err;
+
+}
+
+void __exit exit_dtl1_cs(void) {
+
+  unregister_pccard_driver(&dev_info);
+
+  while (dev_list != NULL)
+    dtl1_detach(dev_list);
+
+}
+
+
+module_init(init_dtl1_cs);
+module_exit(exit_dtl1_cs);
+
+EXPORT_NO_SYMBOLS;
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)