diff options
Diffstat (limited to 'drivers/bluetooth/bluecard_cs.c')
| -rw-r--r-- | drivers/bluetooth/bluecard_cs.c | 961 |
1 files changed, 961 insertions, 0 deletions
diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c new file mode 100644 index 00000000..aed1904e --- /dev/null +++ b/drivers/bluetooth/bluecard_cs.c @@ -0,0 +1,961 @@ +/* + * + * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041) + * + * 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/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/timer.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/spinlock.h> +#include <linux/moduleparam.h> +#include <linux/wait.h> + +#include <linux/skbuff.h> +#include <linux/io.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>"); +MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); +MODULE_LICENSE("GPL"); + + + +/* ======================== Local structures ======================== */ + + +typedef struct bluecard_info_t { + struct pcmcia_device *p_dev; + + struct hci_dev *hdev; + + spinlock_t lock; /* For serializing operations */ + struct timer_list timer; /* For LED control */ + + struct sk_buff_head txq; + unsigned long tx_state; + + unsigned long rx_state; + unsigned long rx_count; + struct sk_buff *rx_skb; + + unsigned char ctrl_reg; + unsigned long hw_state; /* Status of the hardware and LED control */ +} bluecard_info_t; + + +static int bluecard_config(struct pcmcia_device *link); +static void bluecard_release(struct pcmcia_device *link); + +static void bluecard_detach(struct pcmcia_device *p_dev); + + +/* Default baud rate: 57600, 115200, 230400 or 460800 */ +#define DEFAULT_BAUD_RATE 230400 + + +/* Hardware states */ +#define CARD_READY 1 +#define CARD_HAS_PCCARD_ID 4 +#define CARD_HAS_POWER_LED 5 +#define CARD_HAS_ACTIVITY_LED 6 + +/* Transmit states */ +#define XMIT_SENDING 1 +#define XMIT_WAKEUP 2 +#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ +#define XMIT_BUF_ONE_READY 6 +#define XMIT_BUF_TWO_READY 7 +#define XMIT_SENDING_READY 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 packet types */ +#define PKT_BAUD_RATE_57600 0x80 +#define PKT_BAUD_RATE_115200 0x81 +#define PKT_BAUD_RATE_230400 0x82 +#define PKT_BAUD_RATE_460800 0x83 + + +/* These are the register offsets */ +#define REG_COMMAND 0x20 +#define REG_INTERRUPT 0x21 +#define REG_CONTROL 0x22 +#define REG_RX_CONTROL 0x24 +#define REG_CARD_RESET 0x30 +#define REG_LED_CTRL 0x30 + +/* REG_COMMAND */ +#define REG_COMMAND_TX_BUF_ONE 0x01 +#define REG_COMMAND_TX_BUF_TWO 0x02 +#define REG_COMMAND_RX_BUF_ONE 0x04 +#define REG_COMMAND_RX_BUF_TWO 0x08 +#define REG_COMMAND_RX_WIN_ONE 0x00 +#define REG_COMMAND_RX_WIN_TWO 0x10 + +/* REG_CONTROL */ +#define REG_CONTROL_BAUD_RATE_57600 0x00 +#define REG_CONTROL_BAUD_RATE_115200 0x01 +#define REG_CONTROL_BAUD_RATE_230400 0x02 +#define REG_CONTROL_BAUD_RATE_460800 0x03 +#define REG_CONTROL_RTS 0x04 +#define REG_CONTROL_BT_ON 0x08 +#define REG_CONTROL_BT_RESET 0x10 +#define REG_CONTROL_BT_RES_PU 0x20 +#define REG_CONTROL_INTERRUPT 0x40 +#define REG_CONTROL_CARD_RESET 0x80 + +/* REG_RX_CONTROL */ +#define RTS_LEVEL_SHIFT_BITS 0x02 + + + +/* ======================== LED handling routines ======================== */ + + +static void bluecard_activity_led_timeout(u_long arg) +{ + bluecard_info_t *info = (bluecard_info_t *)arg; + unsigned int iobase = info->p_dev->resource[0]->start; + + if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) + return; + + if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { + /* Disable activity LED */ + outb(0x08 | 0x20, iobase + 0x30); + } else { + /* Disable power LED */ + outb(0x00, iobase + 0x30); + } +} + + +static void bluecard_enable_activity_led(bluecard_info_t *info) +{ + unsigned int iobase = info->p_dev->resource[0]->start; + + if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) + return; + + if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { + /* Enable activity LED */ + outb(0x10 | 0x40, iobase + 0x30); + + /* Stop the LED after HZ/4 */ + mod_timer(&(info->timer), jiffies + HZ / 4); + } else { + /* Enable power LED */ + outb(0x08 | 0x20, iobase + 0x30); + + /* Stop the LED after HZ/2 */ + mod_timer(&(info->timer), jiffies + HZ / 2); + } +} + + + +/* ======================== Interrupt handling ======================== */ + + +static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) +{ + int i, actual; + + actual = (len > 15) ? 15 : len; + + outb_p(actual, iobase + offset); + + for (i = 0; i < actual; i++) + outb_p(buf[i], iobase + offset + i + 1); + + return actual; +} + + +static void bluecard_write_wakeup(bluecard_info_t *info) +{ + if (!info) { + BT_ERR("Unknown device"); + return; + } + + if (!test_bit(XMIT_SENDING_READY, &(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->p_dev->resource[0]->start; + register unsigned int offset; + register unsigned char command; + register unsigned long ready_bit; + register struct sk_buff *skb; + register int len; + + clear_bit(XMIT_WAKEUP, &(info->tx_state)); + + if (!pcmcia_dev_present(info->p_dev)) + return; + + if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { + if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) + break; + offset = 0x10; + command = REG_COMMAND_TX_BUF_TWO; + ready_bit = XMIT_BUF_TWO_READY; + } else { + if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) + break; + offset = 0x00; + command = REG_COMMAND_TX_BUF_ONE; + ready_bit = XMIT_BUF_ONE_READY; + } + + if (!(skb = skb_dequeue(&(info->txq)))) + break; + + if (bt_cb(skb)->pkt_type & 0x80) { + /* Disable RTS */ + info->ctrl_reg |= REG_CONTROL_RTS; + outb(info->ctrl_reg, iobase + REG_CONTROL); + } + + /* Activate LED */ + bluecard_enable_activity_led(info); + + /* Send frame */ + len = bluecard_write(iobase, offset, skb->data, skb->len); + + /* Tell the FPGA to send the data */ + outb_p(command, iobase + REG_COMMAND); + + /* Mark the buffer as dirty */ + clear_bit(ready_bit, &(info->tx_state)); + + if (bt_cb(skb)->pkt_type & 0x80) { + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); + DEFINE_WAIT(wait); + + unsigned char baud_reg; + + switch (bt_cb(skb)->pkt_type) { + case PKT_BAUD_RATE_460800: + baud_reg = REG_CONTROL_BAUD_RATE_460800; + break; + case PKT_BAUD_RATE_230400: + baud_reg = REG_CONTROL_BAUD_RATE_230400; + break; + case PKT_BAUD_RATE_115200: + baud_reg = REG_CONTROL_BAUD_RATE_115200; + break; + case PKT_BAUD_RATE_57600: + /* Fall through... */ + default: + baud_reg = REG_CONTROL_BAUD_RATE_57600; + break; + } + + /* Wait until the command reaches the baseband */ + prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); + schedule_timeout(HZ/10); + finish_wait(&wq, &wait); + + /* Set baud on baseband */ + info->ctrl_reg &= ~0x03; + info->ctrl_reg |= baud_reg; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Enable RTS */ + info->ctrl_reg &= ~REG_CONTROL_RTS; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Wait before the next HCI packet can be send */ + prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); + schedule_timeout(HZ); + finish_wait(&wq, &wait); + } + + if (len == skb->len) { + kfree_skb(skb); + } else { + skb_pull(skb, len); + skb_queue_head(&(info->txq), skb); + } + + info->hdev->stat.byte_tx += len; + + /* Change buffer */ + change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); + + } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); + + clear_bit(XMIT_SENDING, &(info->tx_state)); +} + + +static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) +{ + int i, n, len; + + outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); + + len = inb(iobase + offset); + n = 0; + i = 1; + + while (n < len) { + + if (i == 16) { + outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); + i = 0; + } + + buf[n] = inb(iobase + offset + i); + + n++; + i++; + + } + + return len; +} + + +static void bluecard_receive(bluecard_info_t *info, unsigned int offset) +{ + unsigned int iobase; + unsigned char buf[31]; + int i, len; + + if (!info) { + BT_ERR("Unknown device"); + return; + } + + iobase = info->p_dev->resource[0]->start; + + if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) + bluecard_enable_activity_led(info); + + len = bluecard_read(iobase, offset, buf, sizeof(buf)); + + for (i = 0; i < len; i++) { + + /* 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; + bt_cb(info->rx_skb)->pkt_type = buf[i]; + + switch (bt_cb(info->rx_skb)->pkt_type) { + + case 0x00: + /* init packet */ + if (offset != 0x00) { + set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); + set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); + set_bit(XMIT_SENDING_READY, &(info->tx_state)); + bluecard_write_wakeup(info); + } + + kfree_skb(info->rx_skb); + info->rx_skb = NULL; + break; + + 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", bt_cb(info->rx_skb)->pkt_type); + info->hdev->stat.err_rx++; + + kfree_skb(info->rx_skb); + info->rx_skb = NULL; + break; + + } + + } else { + + *skb_put(info->rx_skb, 1) = buf[i]; + 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 = hci_event_hdr(info->rx_skb); + info->rx_state = RECV_WAIT_DATA; + info->rx_count = eh->plen; + break; + + case RECV_WAIT_ACL_HEADER: + ah = hci_acl_hdr(info->rx_skb); + 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); + 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; + + } + + } + + } + + + } + + info->hdev->stat.byte_rx += len; +} + + +static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) +{ + bluecard_info_t *info = dev_inst; + unsigned int iobase; + unsigned char reg; + + if (!info || !info->hdev) + /* our irq handler is shared */ + return IRQ_NONE; + + if (!test_bit(CARD_READY, &(info->hw_state))) + return IRQ_HANDLED; + + iobase = info->p_dev->resource[0]->start; + + spin_lock(&(info->lock)); + + /* Disable interrupt */ + info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + reg = inb(iobase + REG_INTERRUPT); + + if ((reg != 0x00) && (reg != 0xff)) { + + if (reg & 0x04) { + bluecard_receive(info, 0x00); + outb(0x04, iobase + REG_INTERRUPT); + outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); + } + + if (reg & 0x08) { + bluecard_receive(info, 0x10); + outb(0x08, iobase + REG_INTERRUPT); + outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); + } + + if (reg & 0x01) { + set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); + outb(0x01, iobase + REG_INTERRUPT); + bluecard_write_wakeup(info); + } + + if (reg & 0x02) { + set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); + outb(0x02, iobase + REG_INTERRUPT); + bluecard_write_wakeup(info); + } + + } + + /* Enable interrupt */ + info->ctrl_reg |= REG_CONTROL_INTERRUPT; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + spin_unlock(&(info->lock)); + + return IRQ_HANDLED; +} + + + +/* ======================== Device specific HCI commands ======================== */ + + +static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) +{ + bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); + struct sk_buff *skb; + + /* Ericsson baud rate command */ + unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; + + if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { + BT_ERR("Can't allocate mem for new packet"); + return -1; + } + + switch (baud) { + case 460800: + cmd[4] = 0x00; + bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; + break; + case 230400: + cmd[4] = 0x01; + bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; + break; + case 115200: + cmd[4] = 0x02; + bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; + break; + case 57600: + /* Fall through... */ + default: + cmd[4] = 0x03; + bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; + break; + } + + memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); + + skb_queue_tail(&(info->txq), skb); + + bluecard_write_wakeup(info); + + return 0; +} + + + +/* ======================== HCI interface ======================== */ + + +static int bluecard_hci_flush(struct hci_dev *hdev) +{ + bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); + + /* Drop TX queue */ + skb_queue_purge(&(info->txq)); + + return 0; +} + + +static int bluecard_hci_open(struct hci_dev *hdev) +{ + bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); + unsigned int iobase = info->p_dev->resource[0]->start; + + if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) + bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); + + if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) + return 0; + + if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { + /* Enable LED */ + outb(0x08 | 0x20, iobase + 0x30); + } + + return 0; +} + + +static int bluecard_hci_close(struct hci_dev *hdev) +{ + bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); + unsigned int iobase = info->p_dev->resource[0]->start; + + if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) + return 0; + + bluecard_hci_flush(hdev); + + if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { + /* Disable LED */ + outb(0x00, iobase + 0x30); + } + + return 0; +} + + +static int bluecard_hci_send_frame(struct sk_buff *skb) +{ + bluecard_info_t *info; + struct hci_dev *hdev = (struct hci_dev *)(skb->dev); + + if (!hdev) { + BT_ERR("Frame for unknown HCI device (hdev=NULL)"); + return -ENODEV; + } + + info = (bluecard_info_t *)(hdev->driver_data); + + switch (bt_cb(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), &bt_cb(skb)->pkt_type, 1); + skb_queue_tail(&(info->txq), skb); + + bluecard_write_wakeup(info); + + return 0; +} + + +static void bluecard_hci_destruct(struct hci_dev *hdev) +{ +} + + +static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) +{ + return -ENOIOCTLCMD; +} + + + +/* ======================== Card services HCI interaction ======================== */ + + +static int bluecard_open(bluecard_info_t *info) +{ + unsigned int iobase = info->p_dev->resource[0]->start; + struct hci_dev *hdev; + unsigned char id; + + spin_lock_init(&(info->lock)); + + init_timer(&(info->timer)); + info->timer.function = &bluecard_activity_led_timeout; + info->timer.data = (u_long)info; + + 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->bus = HCI_PCCARD; + hdev->driver_data = info; + SET_HCIDEV_DEV(hdev, &info->p_dev->dev); + + hdev->open = bluecard_hci_open; + hdev->close = bluecard_hci_close; + hdev->flush = bluecard_hci_flush; + hdev->send = bluecard_hci_send_frame; + hdev->destruct = bluecard_hci_destruct; + hdev->ioctl = bluecard_hci_ioctl; + + hdev->owner = THIS_MODULE; + + id = inb(iobase + 0x30); + + if ((id & 0x0f) == 0x02) + set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); + + if (id & 0x10) + set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); + + if (id & 0x20) + set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); + + /* Reset card */ + info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Turn FPGA off */ + outb(0x80, iobase + 0x30); + + /* Wait some time */ + msleep(10); + + /* Turn FPGA on */ + outb(0x00, iobase + 0x30); + + /* Activate card */ + info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Enable interrupt */ + outb(0xff, iobase + REG_INTERRUPT); + info->ctrl_reg |= REG_CONTROL_INTERRUPT; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + if ((id & 0x0f) == 0x03) { + /* Disable RTS */ + info->ctrl_reg |= REG_CONTROL_RTS; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Set baud rate */ + info->ctrl_reg |= 0x03; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Enable RTS */ + info->ctrl_reg &= ~REG_CONTROL_RTS; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); + set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); + set_bit(XMIT_SENDING_READY, &(info->tx_state)); + } + + /* Start the RX buffers */ + outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); + outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); + + /* Signal that the hardware is ready */ + set_bit(CARD_READY, &(info->hw_state)); + + /* Drop TX queue */ + skb_queue_purge(&(info->txq)); + + /* Control the point at which RTS is enabled */ + outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); + + /* Timeout before it is safe to send the first HCI packet */ + msleep(1250); + + /* Register HCI device */ + if (hci_register_dev(hdev) < 0) { + BT_ERR("Can't register HCI device"); + info->hdev = NULL; + hci_free_dev(hdev); + return -ENODEV; + } + + return 0; +} + + +static int bluecard_close(bluecard_info_t *info) +{ + unsigned int iobase = info->p_dev->resource[0]->start; + struct hci_dev *hdev = info->hdev; + + if (!hdev) + return -ENODEV; + + bluecard_hci_close(hdev); + + clear_bit(CARD_READY, &(info->hw_state)); + + /* Reset card */ + info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; + outb(info->ctrl_reg, iobase + REG_CONTROL); + + /* Turn FPGA off */ + outb(0x80, iobase + 0x30); + + if (hci_unregister_dev(hdev) < 0) + BT_ERR("Can't unregister HCI device %s", hdev->name); + + hci_free_dev(hdev); + + return 0; +} + +static int bluecard_probe(struct pcmcia_device *link) +{ + bluecard_info_t *info; + + /* Create new info device */ + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->p_dev = link; + link->priv = info; + + link->config_flags |= CONF_ENABLE_IRQ; + + return bluecard_config(link); +} + + +static void bluecard_detach(struct pcmcia_device *link) +{ + bluecard_info_t *info = link->priv; + + bluecard_release(link); + kfree(info); +} + + +static int bluecard_config(struct pcmcia_device *link) +{ + bluecard_info_t *info = link->priv; + int i, n; + + link->config_index = 0x20; + + link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + link->resource[0]->end = 64; + link->io_lines = 6; + + for (n = 0; n < 0x400; n += 0x40) { + link->resource[0]->start = n ^ 0x300; + i = pcmcia_request_io(link); + if (i == 0) + break; + } + + if (i != 0) + goto failed; + + i = pcmcia_request_irq(link, bluecard_interrupt); + if (i != 0) + goto failed; + + i = pcmcia_enable_device(link); + if (i != 0) + goto failed; + + if (bluecard_open(info) != 0) + goto failed; + + return 0; + +failed: + bluecard_release(link); + return -ENODEV; +} + + +static void bluecard_release(struct pcmcia_device *link) +{ + bluecard_info_t *info = link->priv; + + bluecard_close(info); + + del_timer(&(info->timer)); + + pcmcia_disable_device(link); +} + +static const struct pcmcia_device_id bluecard_ids[] = { + PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), + PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), + PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); + +static struct pcmcia_driver bluecard_driver = { + .owner = THIS_MODULE, + .name = "bluecard_cs", + .probe = bluecard_probe, + .remove = bluecard_detach, + .id_table = bluecard_ids, +}; + +static int __init init_bluecard_cs(void) +{ + return pcmcia_register_driver(&bluecard_driver); +} + + +static void __exit exit_bluecard_cs(void) +{ + pcmcia_unregister_driver(&bluecard_driver); +} + +module_init(init_bluecard_cs); +module_exit(exit_bluecard_cs); |