diff options
Diffstat (limited to 'drivers/bluetooth/bt3c_cs.c')
| -rw-r--r-- | drivers/bluetooth/bt3c_cs.c | 960 |
1 files changed, 960 insertions, 0 deletions
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c new file mode 100644 index 000000000000..f71e5c76963d --- /dev/null +++ b/drivers/bluetooth/bt3c_cs.c @@ -0,0 +1,960 @@ +/* + * + * 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> + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/spinlock.h> +#include <linux/moduleparam.h> + +#include <linux/skbuff.h> +#include <linux/string.h> +#include <linux/serial.h> +#include <linux/serial_reg.h> +#include <linux/bitops.h> +#include <asm/system.h> +#include <asm/io.h> + +#include <linux/device.h> +#include <linux/firmware.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 ======================== */ + + +MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>"); +MODULE_DESCRIPTION("Bluetooth 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; + + +static void bt3c_config(dev_link_t *link); +static void bt3c_release(dev_link_t *link); +static int bt3c_event(event_t event, int priority, event_callback_args_t *args); + +static dev_info_t dev_info = "bt3c_cs"; + +static dev_link_t *bt3c_attach(void); +static 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 + + +static inline void bt3c_address(unsigned int iobase, unsigned short addr) +{ + outb(addr & 0xff, iobase + ADDR_L); + outb((addr >> 8) & 0xff, iobase + ADDR_H); +} + + +static inline void bt3c_put(unsigned int iobase, unsigned short value) +{ + outb(value & 0xff, iobase + DATA_L); + outb((value >> 8) & 0xff, iobase + DATA_H); +} + + +static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value) +{ + bt3c_address(iobase, addr); + bt3c_put(iobase, value); +} + + +static inline unsigned short bt3c_get(unsigned int iobase) +{ + unsigned short value = inb(iobase + DATA_L); + + value |= inb(iobase + DATA_H) << 8; + + return value; +} + + +static 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) +{ + if (!info) { + BT_ERR("Unknown device"); + return; + } + + if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) + return; + + 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) { + BT_ERR("Very strange"); + } + + kfree_skb(skb); + + info->hdev->stat.byte_tx += len; + + } while (0); +} + + +static void bt3c_receive(bt3c_info_t *info) +{ + unsigned int iobase; + int size = 0, avail; + + if (!info) { + BT_ERR("Unknown device"); + 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 = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { + BT_ERR("Can't allocate mem for new packet"); + 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 */ + BT_ERR("Unknown HCI packet with type 0x%02x received", 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; + struct hci_event_hdr *eh; + struct hci_acl_hdr *ah; + struct hci_sco_hdr *sh; + + switch (info->rx_state) { + + case RECV_WAIT_EVENT_HEADER: + eh = (struct 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 = (struct 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 = (struct 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); +} + + +static irqreturn_t bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs) +{ + bt3c_info_t *info = dev_inst; + unsigned int iobase; + int iir; + + if (!info || !info->hdev) { + BT_ERR("Call of irq %d for unknown device", irq); + return IRQ_NONE; + } + + 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) { + BT_ERR("Very strange (stat=0x%04x)", stat); + } else if ((stat & 0xff) != 0xff) { + if (stat & 0x0020) { + int stat = bt3c_read(iobase, 0x7002) & 0x10; + BT_INFO("%s: Antenna %s", info->hdev->name, + stat ? "out" : "in"); + } + if (stat & 0x0001) + bt3c_receive(info); + if (stat & 0x0002) { + //BT_ERR("Ack (stat=0x%04x)", stat); + clear_bit(XMIT_SENDING, &(info->tx_state)); + bt3c_write_wakeup(info); + } + + bt3c_io_write(iobase, 0x7001, 0x0000); + + outb(iir, iobase + CONTROL); + } + } + + spin_unlock(&(info->lock)); + + return IRQ_HANDLED; +} + + + +/* ======================== 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); + unsigned long flags; + + if (!hdev) { + BT_ERR("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); + + spin_lock_irqsave(&(info->lock), flags); + + bt3c_write_wakeup(info); + + spin_unlock_irqrestore(&(info->lock), flags); + + 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; +} + + + +/* ======================== Card services HCI interaction ======================== */ + + +static struct device *bt3c_device(void) +{ + static struct device dev = { + .bus_id = "pcmcia", + }; + kobject_set_name(&dev.kobj, "bt3c"); + kobject_init(&dev.kobj); + + return &dev; +} + + +static int bt3c_load_firmware(bt3c_info_t *info, unsigned char *firmware, int count) +{ + char *ptr = (char *) firmware; + char b[9]; + unsigned int iobase, size, addr, fcs, tmp; + int i, err = 0; + + iobase = info->link.io.BasePort1; + + /* Reset */ + bt3c_io_write(iobase, 0x8040, 0x0404); + bt3c_io_write(iobase, 0x8040, 0x0400); + + udelay(1); + + bt3c_io_write(iobase, 0x8040, 0x0404); + + udelay(17); + + /* Load */ + while (count) { + if (ptr[0] != 'S') { + BT_ERR("Bad address in firmware"); + err = -EFAULT; + goto error; + } + + memset(b, 0, sizeof(b)); + memcpy(b, ptr + 2, 2); + size = simple_strtol(b, NULL, 16); + + memset(b, 0, sizeof(b)); + memcpy(b, ptr + 4, 8); + addr = simple_strtol(b, NULL, 16); + + memset(b, 0, sizeof(b)); + memcpy(b, ptr + (size * 2) + 2, 2); + fcs = simple_strtol(b, NULL, 16); + + memset(b, 0, sizeof(b)); + for (tmp = 0, i = 0; i < size; i++) { + memcpy(b, ptr + (i * 2) + 2, 2); + tmp += simple_strtol(b, NULL, 16); + } + + if (((tmp + fcs) & 0xff) != 0xff) { + BT_ERR("Checksum error in firmware"); + err = -EILSEQ; + goto error; + } + + if (ptr[1] == '3') { + bt3c_address(iobase, addr); + + memset(b, 0, sizeof(b)); + for (i = 0; i < (size - 4) / 2; i++) { + memcpy(b, ptr + (i * 4) + 12, 4); + tmp = simple_strtol(b, NULL, 16); + bt3c_put(iobase, tmp); + } + } + + ptr += (size * 2) + 6; + count -= (size * 2) + 6; + } + + udelay(17); + + /* Boot */ + bt3c_address(iobase, 0x3000); + outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); + +error: + udelay(17); + + /* Clear */ + bt3c_io_write(iobase, 0x7006, 0x0000); + bt3c_io_write(iobase, 0x7005, 0x0000); + bt3c_io_write(iobase, 0x7001, 0x0000); + + return err; +} + + +static int bt3c_open(bt3c_info_t *info) +{ + const struct firmware *firmware; + 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; + + /* Initialize HCI device */ + hdev = hci_alloc_dev(); + if (!hdev) { + BT_ERR("Can't allocate HCI device"); + return -ENOMEM; + } + + info->hdev = 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; + + hdev->owner = THIS_MODULE; + + /* Load firmware */ + err = request_firmware(&firmware, "BT3CPCC.bin", bt3c_device()); + if (err < 0) { + BT_ERR("Firmware request failed"); + goto error; + } + + err = bt3c_load_firmware(info, firmware->data, firmware->size); + + release_firmware(firmware); + + if (err < 0) { + BT_ERR("Firmware loading failed"); + goto error; + } + + /* Timeout before it is safe to send the first HCI packet */ + msleep(1000); + + /* Register HCI device */ + err = hci_register_dev(hdev); + if (err < 0) { + BT_ERR("Can't register HCI device"); + goto error; + } + + return 0; + +error: + info->hdev = NULL; + hci_free_dev(hdev); + return err; +} + + +static int bt3c_close(bt3c_info_t *info) +{ + struct hci_dev *hdev = info->hdev; + + if (!hdev) + return -ENODEV; + + bt3c_hci_close(hdev); + + if (hci_unregister_dev(hdev) < 0) + BT_ERR("Can't unregister HCI device %s", hdev->name); + + hci_free_dev(hdev); + + return 0; +} + +static dev_link_t *bt3c_attach(void) +{ + bt3c_info_t *info; + client_reg_t client_reg; + dev_link_t *link; + int 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->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + link->io.NumPorts1 = 8; + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; + link->irq.IRQInfo1 = IRQ_LEVEL_ID; + + 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.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 = pcmcia_register_client(&link->handle, &client_reg); + if (ret != CS_SUCCESS) { + cs_error(link->handle, RegisterClient, ret); + bt3c_detach(link); + return NULL; + } + + return link; +} + + +static 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; + + if (link->state & DEV_CONFIG) + bt3c_release(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 get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) +{ + int i; + + i = pcmcia_get_tuple_data(handle, tuple); + if (i != CS_SUCCESS) + return i; + + return pcmcia_parse_tuple(handle, tuple, parse); +} + +static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) +{ + if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS) + return CS_NO_MORE_ITEMS; + return get_tuple(handle, tuple, parse); +} + +static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) +{ + if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS) + return CS_NO_MORE_ITEMS; + return get_tuple(handle, tuple, parse); +} + +static void bt3c_config(dev_link_t *link) +{ + static kio_addr_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 = pcmcia_get_configuration_info(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 = 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) { + BT_ERR("No usable port range found"); + cs_error(link->handle, RequestIO, i); + goto failed; + } + + i = pcmcia_request_irq(link->handle, &link->irq); + if (i != CS_SUCCESS) { + cs_error(link->handle, RequestIRQ, i); + link->irq.AssignedIRQ = 0; + } + + i = pcmcia_request_configuration(link->handle, &link->conf); + if (i != CS_SUCCESS) { + cs_error(link->handle, RequestConfiguration, i); + goto failed; + } + + 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(link); +} + + +static void bt3c_release(dev_link_t *link) +{ + bt3c_info_t *info = link->priv; + + if (link->state & DEV_PRESENT) + bt3c_close(info); + + link->dev = NULL; + + pcmcia_release_configuration(link->handle); + pcmcia_release_io(link->handle, &link->io); + pcmcia_release_irq(link->handle, &link->irq); + + link->state &= ~DEV_CONFIG; +} + + +static 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); + bt3c_release(link); + } + 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) + pcmcia_release_configuration(link->handle); + break; + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (DEV_OK(link)) + pcmcia_request_configuration(link->handle, &link->conf); + break; + } + + return 0; +} + +static struct pcmcia_driver bt3c_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "bt3c_cs", + }, + .attach = bt3c_attach, + .detach = bt3c_detach, +}; + +static int __init init_bt3c_cs(void) +{ + return pcmcia_register_driver(&bt3c_driver); +} + + +static void __exit exit_bt3c_cs(void) +{ + pcmcia_unregister_driver(&bt3c_driver); + BUG_ON(dev_list != NULL); +} + +module_init(init_bt3c_cs); +module_exit(exit_bt3c_cs); |