bt3c_cs.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:20k
- /*
- *
- * 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 strangen");
- }
- 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 bytesn", 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=%02xn", 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=%04xn", stat);
- } else if ((stat & 0xff) != 0xff) {
- if (stat & 0x0020) {
- int stat = bt3c_read(iobase, 0x7002) & 0x10;
- printk(KERN_WARNING "bt3c_cs: antena %sn", stat ? "OUT" : "IN");
- }
- if (stat & 0x0001)
- bt3c_receive(info);
- if (stat & 0x0002) {
- //printk("bt3c_cs: ACK %04xn", 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(¤t->sigmask_lock);
- tmpsig = current->blocked;
- siginitsetinv(¤t->blocked, sigmask(SIGKILL) | sigmask(SIGSTOP));
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
- result = waitpid(pid, NULL, __WCLONE);
- /* Allow signals again */
- spin_lock_irq(¤t->sigmask_lock);
- current->blocked = tmpsig;
- recalc_sigpending(current);
- spin_unlock_irq(¤t->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;