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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [bluetooth/] [bfusb.c] - Blame information for rev 1774

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/*
 *
 *  AVM BlueFRITZ! USB driver
 *
 *  Copyright (C) 2003  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 as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
 
#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/errno.h>
#include <linux/skbuff.h>
 
#include <linux/firmware.h>
#include <linux/usb.h>
 
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
 
#ifndef CONFIG_BLUEZ_HCIBFUSB_DEBUG
#undef  BT_DBG
#define BT_DBG(D...)
#endif
 
#define VERSION "1.1"
 
static struct usb_device_id bfusb_table[] = {
        /* AVM BlueFRITZ! USB */
        { USB_DEVICE(0x057c, 0x2200) },
 
        { }     /* Terminating entry */
};
 
MODULE_DEVICE_TABLE(usb, bfusb_table);
 
 
#define BFUSB_MAX_BLOCK_SIZE    256
 
#define BFUSB_BLOCK_TIMEOUT     (HZ * 3)
 
#define BFUSB_TX_PROCESS        1
#define BFUSB_TX_WAKEUP         2
 
#define BFUSB_MAX_BULK_TX       1
#define BFUSB_MAX_BULK_RX       1
 
struct bfusb {
        struct hci_dev          hdev;
 
        unsigned long           state;
 
        struct usb_device       *udev;
 
        unsigned int            bulk_in_ep;
        unsigned int            bulk_out_ep;
        unsigned int            bulk_pkt_size;
 
        rwlock_t                lock;
 
        struct sk_buff_head     transmit_q;
 
        struct sk_buff          *reassembly;
 
        atomic_t                pending_tx;
        struct sk_buff_head     pending_q;
        struct sk_buff_head     completed_q;
};
 
struct bfusb_scb {
        struct urb *urb;
};
 
static void bfusb_tx_complete(struct urb *urb);
static void bfusb_rx_complete(struct urb *urb);
 
static struct urb *bfusb_get_completed(struct bfusb *bfusb)
{
        struct sk_buff *skb;
        struct urb *urb = NULL;
 
        BT_DBG("bfusb %p", bfusb);
 
        skb = skb_dequeue(&bfusb->completed_q);
        if (skb) {
                urb = ((struct bfusb_scb *) skb->cb)->urb;
                kfree_skb(skb);
        }
 
        return urb;
}
 
static inline void bfusb_unlink_urbs(struct bfusb *bfusb)
{
        struct sk_buff *skb;
        struct urb *urb;
 
        BT_DBG("bfusb %p", bfusb);
 
        while ((skb = skb_dequeue(&bfusb->pending_q))) {
                urb = ((struct bfusb_scb *) skb->cb)->urb;
                usb_unlink_urb(urb);
                skb_queue_tail(&bfusb->completed_q, skb);
        }
 
        while ((urb = bfusb_get_completed(bfusb)))
                usb_free_urb(urb);
}
 
 
static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb)
{
        struct bfusb_scb *scb = (void *) skb->cb;
        struct urb *urb = bfusb_get_completed(bfusb);
        int err, pipe;
 
        BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);
 
        if (!urb && !(urb = usb_alloc_urb(0)))
                return -ENOMEM;
 
        pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
 
        FILL_BULK_URB(urb, bfusb->udev, pipe, skb->data, skb->len,
                        bfusb_tx_complete, skb);
 
        urb->transfer_flags = USB_QUEUE_BULK;
 
        scb->urb = urb;
 
        skb_queue_tail(&bfusb->pending_q, skb);
 
        err = usb_submit_urb(urb);
        if (err) {
                BT_ERR("%s bulk tx submit failed urb %p err %d",
                                        bfusb->hdev.name, urb, err);
                skb_unlink(skb);
                usb_free_urb(urb);
        } else
                atomic_inc(&bfusb->pending_tx);
 
        return err;
}
 
static void bfusb_tx_wakeup(struct bfusb *bfusb)
{
        struct sk_buff *skb;
 
        BT_DBG("bfusb %p", bfusb);
 
        if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
                set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
                return;
        }
 
        do {
                clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);
 
                while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
                                (skb = skb_dequeue(&bfusb->transmit_q))) {
                        if (bfusb_send_bulk(bfusb, skb) < 0) {
                                skb_queue_head(&bfusb->transmit_q, skb);
                                break;
                        }
                }
 
        } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));
 
        clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
}
 
static void bfusb_tx_complete(struct urb *urb)
{
        struct sk_buff *skb = (struct sk_buff *) urb->context;
        struct bfusb *bfusb = (struct bfusb *) skb->dev;
 
        BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
 
        atomic_dec(&bfusb->pending_tx);
 
        if (!test_bit(HCI_RUNNING, &bfusb->hdev.flags))
                return;
 
        if (!urb->status)
                bfusb->hdev.stat.byte_tx += skb->len;
        else
                bfusb->hdev.stat.err_tx++;
 
        read_lock(&bfusb->lock);
 
        skb_unlink(skb);
        skb_queue_tail(&bfusb->completed_q, skb);
 
        bfusb_tx_wakeup(bfusb);
 
        read_unlock(&bfusb->lock);
}
 
 
static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
{
        struct bfusb_scb *scb;
        struct sk_buff *skb;
        int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
 
        BT_DBG("bfusb %p urb %p", bfusb, urb);
 
        if (!urb && !(urb = usb_alloc_urb(0)))
                return -ENOMEM;
 
        if (!(skb = bluez_skb_alloc(size, GFP_ATOMIC))) {
                usb_free_urb(urb);
                return -ENOMEM;
        }
 
        skb->dev = (void *) bfusb;
 
        scb = (struct bfusb_scb *) skb->cb;
        scb->urb = urb;
 
        pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);
 
        FILL_BULK_URB(urb, bfusb->udev, pipe, skb->data, size,
                        bfusb_rx_complete, skb);
 
        urb->transfer_flags = USB_QUEUE_BULK;
 
        skb_queue_tail(&bfusb->pending_q, skb);
 
        err = usb_submit_urb(urb);
        if (err) {
                BT_ERR("%s bulk rx submit failed urb %p err %d",
                                        bfusb->hdev.name, urb, err);
                skb_unlink(skb);
                kfree_skb(skb);
                usb_free_urb(urb);
        }
 
        return err;
}
 
static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len)
{
        BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);
 
        if (hdr & 0x10) {
                BT_ERR("%s error in block", bfusb->hdev.name);
                if (bfusb->reassembly)
                        kfree_skb(bfusb->reassembly);
                bfusb->reassembly = NULL;
                return -EIO;
        }
 
        if (hdr & 0x04) {
                struct sk_buff *skb;
                unsigned char pkt_type;
                int pkt_len = 0;
 
                if (bfusb->reassembly) {
                        BT_ERR("%s unexpected start block", bfusb->hdev.name);
                        kfree_skb(bfusb->reassembly);
                        bfusb->reassembly = NULL;
                }
 
                if (len < 1) {
                        BT_ERR("%s no packet type found", bfusb->hdev.name);
                        return -EPROTO;
                }
 
                pkt_type = *data++; len--;
 
                switch (pkt_type) {
                case HCI_EVENT_PKT:
                        if (len >= HCI_EVENT_HDR_SIZE) {
                                hci_event_hdr *hdr = (hci_event_hdr *) data;
                                pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
                        } else {
                                BT_ERR("%s event block is too short", bfusb->hdev.name);
                                return -EILSEQ;
                        }
                        break;
 
                case HCI_ACLDATA_PKT:
                        if (len >= HCI_ACL_HDR_SIZE) {
                                hci_acl_hdr *hdr = (hci_acl_hdr *) data;
                                pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
                        } else {
                                BT_ERR("%s data block is too short", bfusb->hdev.name);
                                return -EILSEQ;
                        }
                        break;
 
                case HCI_SCODATA_PKT:
                        if (len >= HCI_SCO_HDR_SIZE) {
                                hci_sco_hdr *hdr = (hci_sco_hdr *) data;
                                pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
                        } else {
                                BT_ERR("%s audio block is too short", bfusb->hdev.name);
                                return -EILSEQ;
                        }
                        break;
                }
 
                skb = bluez_skb_alloc(pkt_len, GFP_ATOMIC);
                if (!skb) {
                        BT_ERR("%s no memory for the packet", bfusb->hdev.name);
                        return -ENOMEM;
                }
 
                skb->dev = (void *) &bfusb->hdev;
                skb->pkt_type = pkt_type;
 
                bfusb->reassembly = skb;
        } else {
                if (!bfusb->reassembly) {
                        BT_ERR("%s unexpected continuation block", bfusb->hdev.name);
                        return -EIO;
                }
        }
 
        if (len > 0)
                memcpy(skb_put(bfusb->reassembly, len), data, len);
 
        if (hdr & 0x08) {
                hci_recv_frame(bfusb->reassembly);
                bfusb->reassembly = NULL;
        }
 
        return 0;
}
 
static void bfusb_rx_complete(struct urb *urb)
{
        struct sk_buff *skb = (struct sk_buff *) urb->context;
        struct bfusb *bfusb = (struct bfusb *) skb->dev;
        unsigned char *buf = urb->transfer_buffer;
        int count = urb->actual_length;
        int err, hdr, len;
 
        BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
 
        if (!test_bit(HCI_RUNNING, &bfusb->hdev.flags))
                return;
 
        read_lock(&bfusb->lock);
 
        if (urb->status || !count)
                goto resubmit;
 
        bfusb->hdev.stat.byte_rx += count;
 
        skb_put(skb, count);
 
        while (count) {
                hdr = buf[0] | (buf[1] << 8);
 
                if (hdr & 0x4000) {
                        len = 0;
                        count -= 2;
                        buf   += 2;
                } else {
                        len = (buf[2] == 0) ? 256 : buf[2];
                        count -= 3;
                        buf   += 3;
                }
 
                if (count < len) {
                        BT_ERR("%s block extends over URB buffer ranges",
                                        bfusb->hdev.name);
                }
 
                if ((hdr & 0xe1) == 0xc1)
                        bfusb_recv_block(bfusb, hdr, buf, len);
 
                count -= len;
                buf   += len;
        }
 
        skb_unlink(skb);
        kfree_skb(skb);
 
        bfusb_rx_submit(bfusb, urb);
 
        read_unlock(&bfusb->lock);
 
        return;
 
resubmit:
        urb->dev = bfusb->udev;
 
        err = usb_submit_urb(urb);
        if (err) {
                BT_ERR("%s bulk resubmit failed urb %p err %d",
                                        bfusb->hdev.name, urb, err);
        }
 
        read_unlock(&bfusb->lock);
}
 
 
static int bfusb_open(struct hci_dev *hdev)
{
        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
        unsigned long flags;
        int i, err;
 
        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 
        if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
                return 0;
 
        MOD_INC_USE_COUNT;
 
        write_lock_irqsave(&bfusb->lock, flags);
 
        err = bfusb_rx_submit(bfusb, NULL);
        if (!err) {
                for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
                        bfusb_rx_submit(bfusb, NULL);
        } else {
                clear_bit(HCI_RUNNING, &hdev->flags);
                MOD_DEC_USE_COUNT;
        }
 
        write_unlock_irqrestore(&bfusb->lock, flags);
 
        return err;
}
 
static int bfusb_flush(struct hci_dev *hdev)
{
        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 
        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 
        skb_queue_purge(&bfusb->transmit_q);
 
        return 0;
}
 
static int bfusb_close(struct hci_dev *hdev)
{
        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
        unsigned long flags;
 
        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 
        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
                return 0;
 
        write_lock_irqsave(&bfusb->lock, flags);
 
        bfusb_unlink_urbs(bfusb);
        bfusb_flush(hdev);
 
        write_unlock_irqrestore(&bfusb->lock, flags);
 
        MOD_DEC_USE_COUNT;
 
        return 0;
}
 
static int bfusb_send_frame(struct sk_buff *skb)
{
        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
        struct bfusb *bfusb;
        struct sk_buff *nskb;
        unsigned char buf[3];
        int sent = 0, size, count;
 
        BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, skb->pkt_type, skb->len);
 
        if (!hdev) {
                BT_ERR("Frame for unknown HCI device (hdev=NULL)");
                return -ENODEV;
        }
 
        if (!test_bit(HCI_RUNNING, &hdev->flags))
                return -EBUSY;
 
        bfusb = (struct bfusb *) 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);
 
        count = skb->len;
 
        /* Max HCI frame size seems to be 1511 + 1 */
        if (!(nskb = bluez_skb_alloc(count + 32, GFP_ATOMIC))) {
                BT_ERR("Can't allocate memory for new packet");
                return -ENOMEM;
        }
 
        nskb->dev = (void *) bfusb;
 
        while (count) {
                size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
 
                buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
                buf[1] = 0x00;
                buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
 
                memcpy(skb_put(nskb, 3), buf, 3);
                memcpy(skb_put(nskb, size), skb->data + sent, size);
 
                sent  += size;
                count -= size;
        }
 
        /* Don't send frame with multiple size of bulk max packet */
        if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
                buf[0] = 0xdd;
                buf[1] = 0x00;
                memcpy(skb_put(nskb, 2), buf, 2);
        }
 
        read_lock(&bfusb->lock);
 
        skb_queue_tail(&bfusb->transmit_q, nskb);
        bfusb_tx_wakeup(bfusb);
 
        read_unlock(&bfusb->lock);
 
        kfree_skb(skb);
 
        return 0;
}
 
static void bfusb_destruct(struct hci_dev *hdev)
{
        struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 
        BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 
        kfree(bfusb);
}
 
static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
{
        return -ENOIOCTLCMD;
}
 
 
static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count)
{
        unsigned char *buf;
        int err, pipe, len, size, sent = 0;
 
        BT_DBG("bfusb %p udev %p firmware %p count %d", bfusb, bfusb->udev, firmware, count);
 
        BT_INFO("BlueFRITZ! USB loading firmware");
 
        if (usb_set_configuration(bfusb->udev, 1) < 0) {
                BT_ERR("Can't change to loading configuration");
                return -EBUSY;
        }
 
        buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
        if (!buf) {
                BT_ERR("Can't allocate memory chunk for firmware");
                return -ENOMEM;
        }
 
        pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
 
        while (count) {
                size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
 
                memcpy(buf, firmware + sent, size);
 
                err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
                                        &len, BFUSB_BLOCK_TIMEOUT);
 
                if (err || (len != size)) {
                        BT_ERR("Error in firmware loading");
                        goto error;
                }
 
                sent  += size;
                count -= size;
        }
 
        if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
                                &len, BFUSB_BLOCK_TIMEOUT)) < 0) {
                BT_ERR("Error in null packet request");
                goto error;
        }
 
        if ((err = usb_set_configuration(bfusb->udev, 2)) < 0) {
                BT_ERR("Can't change to running configuration");
                goto error;
        }
 
        BT_INFO("BlueFRITZ! USB device ready");
 
        kfree(buf);
        return 0;
 
error:
        kfree(buf);
 
        pipe = usb_sndctrlpipe(bfusb->udev, 0);
 
        usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
                                0, 0, 0, NULL, 0, BFUSB_BLOCK_TIMEOUT);
 
        return err;
}
 
static void *bfusb_probe(struct usb_device *udev, unsigned int ifnum, const struct usb_device_id *id)
{
        const struct firmware *firmware;
        char device[16];
        struct usb_interface *iface;
        struct usb_interface_descriptor *iface_desc;
        struct usb_endpoint_descriptor *bulk_out_ep;
        struct usb_endpoint_descriptor *bulk_in_ep;
        struct hci_dev *hdev;
        struct bfusb *bfusb;
 
        BT_DBG("udev %p ifnum %d id %p", udev, ifnum, id);
 
        /* Check number of endpoints */
        iface = &udev->actconfig->interface[0];
        iface_desc = &iface->altsetting[0];
 
        if (iface_desc->bNumEndpoints < 2)
                return NULL;
 
        bulk_out_ep = &iface_desc->endpoint[0];
        bulk_in_ep  = &iface_desc->endpoint[1];
 
        if (!bulk_out_ep || !bulk_in_ep) {
                BT_ERR("Bulk endpoints not found");
                goto done;
        }
 
        /* Initialize control structure and load firmware */
        if (!(bfusb = kmalloc(sizeof(struct bfusb), GFP_KERNEL))) {
                BT_ERR("Can't allocate memory for control structure");
                goto done;
        }
 
        memset(bfusb, 0, sizeof(struct bfusb));
 
        bfusb->udev = udev;
        bfusb->bulk_in_ep    = bulk_in_ep->bEndpointAddress;
        bfusb->bulk_out_ep   = bulk_out_ep->bEndpointAddress;
        bfusb->bulk_pkt_size = bulk_out_ep->wMaxPacketSize;
 
        bfusb->lock = RW_LOCK_UNLOCKED;
 
        bfusb->reassembly = NULL;
 
        skb_queue_head_init(&bfusb->transmit_q);
        skb_queue_head_init(&bfusb->pending_q);
        skb_queue_head_init(&bfusb->completed_q);
 
        snprintf(device, sizeof(device), "bfusb%3.3d%3.3d", udev->bus->busnum, udev->devnum);
 
        if (request_firmware(&firmware, "bfubase.frm", device) < 0) {
                BT_ERR("Firmware request failed");
                goto error;
        }
 
        if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
                BT_ERR("Firmware loading failed");
                goto release;
        }
 
        release_firmware(firmware);
 
        /* Initialize and register HCI device */
        hdev = &bfusb->hdev;
 
        hdev->type = HCI_USB;
        hdev->driver_data = bfusb;
 
        hdev->open     = bfusb_open;
        hdev->close    = bfusb_close;
        hdev->flush    = bfusb_flush;
        hdev->send     = bfusb_send_frame;
        hdev->destruct = bfusb_destruct;
        hdev->ioctl    = bfusb_ioctl;
 
        if (hci_register_dev(hdev) < 0) {
                BT_ERR("Can't register HCI device");
                goto error;
        }
 
        return bfusb;
 
release:
        release_firmware(firmware);
 
error:
        kfree(bfusb);
 
done:
        return NULL;
}
 
static void bfusb_disconnect(struct usb_device *udev, void *ptr)
{
        struct bfusb *bfusb = (struct bfusb *) ptr;
        struct hci_dev *hdev = &bfusb->hdev;
 
        BT_DBG("udev %p ptr %p", udev, ptr);
 
        if (!hdev)
                return;
 
        bfusb_close(hdev);
 
        if (hci_unregister_dev(hdev) < 0)
                BT_ERR("Can't unregister HCI device %s", hdev->name);
}
 
static struct usb_driver bfusb_driver = {
        name:           "bfusb",
        probe:          bfusb_probe,
        disconnect:     bfusb_disconnect,
        id_table:       bfusb_table,
};
 
static int __init bfusb_init(void)
{
        int err;
 
        BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
        BT_INFO("Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>");
 
        if ((err = usb_register(&bfusb_driver)) < 0)
                BT_ERR("Failed to register BlueFRITZ! USB driver");
 
        return err;
}
 
static void __exit bfusb_cleanup(void)
{
        usb_deregister(&bfusb_driver);
}
 
module_init(bfusb_init);
module_exit(bfusb_cleanup);
 
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
MODULE_LICENSE("GPL");

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [bluetooth/] [bfusb.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`*`
3			`* AVM BlueFRITZ! USB driver`
4			`*`
5			`* Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>`
6			`*`
7			`*`
8			`* This program is free software; you can redistribute it and/or modify`
9			`* it under the terms of the GNU General Public License as published by`
10			`* the Free Software Foundation; either version 2 of the License, or`
11			`* (at your option) any later version.`
12			`*`
13			`* This program is distributed in the hope that it will be useful,`
14			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`* GNU General Public License for more details.`
17			`*`
18			`* You should have received a copy of the GNU General Public License`
19			`* along with this program; if not, write to the Free Software`
20			`* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA`
21			`*`
22			`*/`
23
24			`#include <linux/config.h>`
25			`#include <linux/module.h>`
26
27			`#include <linux/kernel.h>`
28			`#include <linux/init.h>`
29			`#include <linux/slab.h>`
30			`#include <linux/types.h>`
31			`#include <linux/sched.h>`
32			`#include <linux/errno.h>`
33			`#include <linux/skbuff.h>`
34
35			`#include <linux/firmware.h>`
36			`#include <linux/usb.h>`
37
38			`#include <net/bluetooth/bluetooth.h>`
39			`#include <net/bluetooth/hci_core.h>`
40
41			`#ifndef CONFIG_BLUEZ_HCIBFUSB_DEBUG`
42			`#undef BT_DBG`
43			`#define BT_DBG(D...)`
44			`#endif`
45
46			`#define VERSION "1.1"`
47
48			`static struct usb_device_id bfusb_table[] = {`
49			`/* AVM BlueFRITZ! USB */`
50			`{ USB_DEVICE(0x057c, 0x2200) },`
51
52			`{ } /* Terminating entry */`
53			`};`
54
55			`MODULE_DEVICE_TABLE(usb, bfusb_table);`
56
57
58			`#define BFUSB_MAX_BLOCK_SIZE 256`
59
60			`#define BFUSB_BLOCK_TIMEOUT (HZ * 3)`
61
62			`#define BFUSB_TX_PROCESS 1`
63			`#define BFUSB_TX_WAKEUP 2`
64
65			`#define BFUSB_MAX_BULK_TX 1`
66			`#define BFUSB_MAX_BULK_RX 1`
67
68			`struct bfusb {`
69			`struct hci_dev hdev;`
70
71			`unsigned long state;`
72
73			`struct usb_device *udev;`
74
75			`unsigned int bulk_in_ep;`
76			`unsigned int bulk_out_ep;`
77			`unsigned int bulk_pkt_size;`
78
79			`rwlock_t lock;`
80
81			`struct sk_buff_head transmit_q;`
82
83			`struct sk_buff *reassembly;`
84
85			`atomic_t pending_tx;`
86			`struct sk_buff_head pending_q;`
87			`struct sk_buff_head completed_q;`
88			`};`
89
90			`struct bfusb_scb {`
91			`struct urb *urb;`
92			`};`
93
94			`static void bfusb_tx_complete(struct urb *urb);`
95			`static void bfusb_rx_complete(struct urb *urb);`
96
97			`static struct urb bfusb_get_completed(struct bfusb bfusb)`
98			`{`
99			`struct sk_buff *skb;`
100			`struct urb *urb = NULL;`
101
102			`BT_DBG("bfusb %p", bfusb);`
103
104			`skb = skb_dequeue(&bfusb->completed_q);`
105			`if (skb) {`
106			`urb = ((struct bfusb_scb *) skb->cb)->urb;`
107			`kfree_skb(skb);`
108			`}`
109
110			`return urb;`
111			`}`
112
113			`static inline void bfusb_unlink_urbs(struct bfusb *bfusb)`
114			`{`
115			`struct sk_buff *skb;`
116			`struct urb *urb;`
117
118			`BT_DBG("bfusb %p", bfusb);`
119
120			`while ((skb = skb_dequeue(&bfusb->pending_q))) {`
121			`urb = ((struct bfusb_scb *) skb->cb)->urb;`
122			`usb_unlink_urb(urb);`
123			`skb_queue_tail(&bfusb->completed_q, skb);`
124			`}`
125
126			`while ((urb = bfusb_get_completed(bfusb)))`
127			`usb_free_urb(urb);`
128			`}`
129
130
131			`static int bfusb_send_bulk(struct bfusb bfusb, struct sk_buff skb)`
132			`{`
133			`struct bfusb_scb scb = (void ) skb->cb;`
134			`struct urb *urb = bfusb_get_completed(bfusb);`
135			`int err, pipe;`
136
137			`BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);`
138
139			`if (!urb && !(urb = usb_alloc_urb(0)))`
140			`return -ENOMEM;`
141
142			`pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);`
143
144			`FILL_BULK_URB(urb, bfusb->udev, pipe, skb->data, skb->len,`
145			`bfusb_tx_complete, skb);`
146
147			`urb->transfer_flags = USB_QUEUE_BULK;`
148
149			`scb->urb = urb;`
150
151			`skb_queue_tail(&bfusb->pending_q, skb);`
152
153			`err = usb_submit_urb(urb);`
154			`if (err) {`
155			`BT_ERR("%s bulk tx submit failed urb %p err %d",`
156			`bfusb->hdev.name, urb, err);`
157			`skb_unlink(skb);`
158			`usb_free_urb(urb);`
159			`} else`
160			`atomic_inc(&bfusb->pending_tx);`
161
162			`return err;`
163			`}`
164
165			`static void bfusb_tx_wakeup(struct bfusb *bfusb)`
166			`{`
167			`struct sk_buff *skb;`
168
169			`BT_DBG("bfusb %p", bfusb);`
170
171			`if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {`
172			`set_bit(BFUSB_TX_WAKEUP, &bfusb->state);`
173			`return;`
174			`}`
175
176			`do {`
177			`clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);`
178
179			`while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&`
180			`(skb = skb_dequeue(&bfusb->transmit_q))) {`
181			`if (bfusb_send_bulk(bfusb, skb) < 0) {`
182			`skb_queue_head(&bfusb->transmit_q, skb);`
183			`break;`
184			`}`
185			`}`
186
187			`} while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));`
188
189			`clear_bit(BFUSB_TX_PROCESS, &bfusb->state);`
190			`}`
191
192			`static void bfusb_tx_complete(struct urb *urb)`
193			`{`
194			`struct sk_buff skb = (struct sk_buff ) urb->context;`
195			`struct bfusb bfusb = (struct bfusb ) skb->dev;`
196
197			`BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);`
198
199			`atomic_dec(&bfusb->pending_tx);`
200
201			`if (!test_bit(HCI_RUNNING, &bfusb->hdev.flags))`
202			`return;`
203
204			`if (!urb->status)`
205			`bfusb->hdev.stat.byte_tx += skb->len;`
206			`else`
207			`bfusb->hdev.stat.err_tx++;`
208
209			`read_lock(&bfusb->lock);`
210
211			`skb_unlink(skb);`
212			`skb_queue_tail(&bfusb->completed_q, skb);`
213
214			`bfusb_tx_wakeup(bfusb);`
215
216			`read_unlock(&bfusb->lock);`
217			`}`
218
219
220			`static int bfusb_rx_submit(struct bfusb bfusb, struct urb urb)`
221			`{`
222			`struct bfusb_scb *scb;`
223			`struct sk_buff *skb;`
224			`int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;`
225
226			`BT_DBG("bfusb %p urb %p", bfusb, urb);`
227
228			`if (!urb && !(urb = usb_alloc_urb(0)))`
229			`return -ENOMEM;`
230
231			`if (!(skb = bluez_skb_alloc(size, GFP_ATOMIC))) {`
232			`usb_free_urb(urb);`
233			`return -ENOMEM;`
234			`}`
235
236			`skb->dev = (void *) bfusb;`
237
238			`scb = (struct bfusb_scb *) skb->cb;`
239			`scb->urb = urb;`
240
241			`pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);`
242
243			`FILL_BULK_URB(urb, bfusb->udev, pipe, skb->data, size,`
244			`bfusb_rx_complete, skb);`
245
246			`urb->transfer_flags = USB_QUEUE_BULK;`
247
248			`skb_queue_tail(&bfusb->pending_q, skb);`
249
250			`err = usb_submit_urb(urb);`
251			`if (err) {`
252			`BT_ERR("%s bulk rx submit failed urb %p err %d",`
253			`bfusb->hdev.name, urb, err);`
254			`skb_unlink(skb);`
255			`kfree_skb(skb);`
256			`usb_free_urb(urb);`
257			`}`
258
259			`return err;`
260			`}`
261
262			`static inline int bfusb_recv_block(struct bfusb bfusb, int hdr, unsigned char data, int len)`
263			`{`
264			`BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);`
265
266			`if (hdr & 0x10) {`
267			`BT_ERR("%s error in block", bfusb->hdev.name);`
268			`if (bfusb->reassembly)`
269			`kfree_skb(bfusb->reassembly);`
270			`bfusb->reassembly = NULL;`
271			`return -EIO;`
272			`}`
273
274			`if (hdr & 0x04) {`
275			`struct sk_buff *skb;`
276			`unsigned char pkt_type;`
277			`int pkt_len = 0;`
278
279			`if (bfusb->reassembly) {`
280			`BT_ERR("%s unexpected start block", bfusb->hdev.name);`
281			`kfree_skb(bfusb->reassembly);`
282			`bfusb->reassembly = NULL;`
283			`}`
284
285			`if (len < 1) {`
286			`BT_ERR("%s no packet type found", bfusb->hdev.name);`
287			`return -EPROTO;`
288			`}`
289
290			`pkt_type = *data++; len--;`
291
292			`switch (pkt_type) {`
293			`case HCI_EVENT_PKT:`
294			`if (len >= HCI_EVENT_HDR_SIZE) {`
295			`hci_event_hdr hdr = (hci_event_hdr ) data;`
296			`pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;`
297			`} else {`
298			`BT_ERR("%s event block is too short", bfusb->hdev.name);`
299			`return -EILSEQ;`
300			`}`
301			`break;`
302
303			`case HCI_ACLDATA_PKT:`
304			`if (len >= HCI_ACL_HDR_SIZE) {`
305			`hci_acl_hdr hdr = (hci_acl_hdr ) data;`
306			`pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);`
307			`} else {`
308			`BT_ERR("%s data block is too short", bfusb->hdev.name);`
309			`return -EILSEQ;`
310			`}`
311			`break;`
312
313			`case HCI_SCODATA_PKT:`
314			`if (len >= HCI_SCO_HDR_SIZE) {`
315			`hci_sco_hdr hdr = (hci_sco_hdr ) data;`
316			`pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;`
317			`} else {`
318			`BT_ERR("%s audio block is too short", bfusb->hdev.name);`
319			`return -EILSEQ;`
320			`}`
321			`break;`
322			`}`
323
324			`skb = bluez_skb_alloc(pkt_len, GFP_ATOMIC);`
325			`if (!skb) {`
326			`BT_ERR("%s no memory for the packet", bfusb->hdev.name);`
327			`return -ENOMEM;`
328			`}`
329
330			`skb->dev = (void *) &bfusb->hdev;`
331			`skb->pkt_type = pkt_type;`
332
333			`bfusb->reassembly = skb;`
334			`} else {`
335			`if (!bfusb->reassembly) {`
336			`BT_ERR("%s unexpected continuation block", bfusb->hdev.name);`
337			`return -EIO;`
338			`}`
339			`}`
340
341			`if (len > 0)`
342			`memcpy(skb_put(bfusb->reassembly, len), data, len);`
343
344			`if (hdr & 0x08) {`
345			`hci_recv_frame(bfusb->reassembly);`
346			`bfusb->reassembly = NULL;`
347			`}`
348
349			`return 0;`
350			`}`
351
352			`static void bfusb_rx_complete(struct urb *urb)`
353			`{`
354			`struct sk_buff skb = (struct sk_buff ) urb->context;`
355			`struct bfusb bfusb = (struct bfusb ) skb->dev;`
356			`unsigned char *buf = urb->transfer_buffer;`
357			`int count = urb->actual_length;`
358			`int err, hdr, len;`
359
360			`BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);`
361
362			`if (!test_bit(HCI_RUNNING, &bfusb->hdev.flags))`
363			`return;`
364
365			`read_lock(&bfusb->lock);`
366
367			`if (urb->status \|\| !count)`
368			`goto resubmit;`
369
370			`bfusb->hdev.stat.byte_rx += count;`
371
372			`skb_put(skb, count);`
373
374			`while (count) {`
375			`hdr = buf[0] \| (buf[1] << 8);`
376
377			`if (hdr & 0x4000) {`
378			`len = 0;`
379			`count -= 2;`
380			`buf += 2;`
381			`} else {`
382			`len = (buf[2] == 0) ? 256 : buf[2];`
383			`count -= 3;`
384			`buf += 3;`
385			`}`
386
387			`if (count < len) {`
388			`BT_ERR("%s block extends over URB buffer ranges",`
389			`bfusb->hdev.name);`
390			`}`
391
392			`if ((hdr & 0xe1) == 0xc1)`
393			`bfusb_recv_block(bfusb, hdr, buf, len);`
394
395			`count -= len;`
396			`buf += len;`
397			`}`
398
399			`skb_unlink(skb);`
400			`kfree_skb(skb);`
401
402			`bfusb_rx_submit(bfusb, urb);`
403
404			`read_unlock(&bfusb->lock);`
405
406			`return;`
407
408			`resubmit:`
409			`urb->dev = bfusb->udev;`
410
411			`err = usb_submit_urb(urb);`
412			`if (err) {`
413			`BT_ERR("%s bulk resubmit failed urb %p err %d",`
414			`bfusb->hdev.name, urb, err);`
415			`}`
416
417			`read_unlock(&bfusb->lock);`
418			`}`
419
420
421			`static int bfusb_open(struct hci_dev *hdev)`
422			`{`
423			`struct bfusb bfusb = (struct bfusb ) hdev->driver_data;`
424			`unsigned long flags;`
425			`int i, err;`
426
427			`BT_DBG("hdev %p bfusb %p", hdev, bfusb);`
428
429			`if (test_and_set_bit(HCI_RUNNING, &hdev->flags))`
430			`return 0;`
431
432			`MOD_INC_USE_COUNT;`
433
434			`write_lock_irqsave(&bfusb->lock, flags);`
435
436			`err = bfusb_rx_submit(bfusb, NULL);`
437			`if (!err) {`
438			`for (i = 1; i < BFUSB_MAX_BULK_RX; i++)`
439			`bfusb_rx_submit(bfusb, NULL);`
440			`} else {`
441			`clear_bit(HCI_RUNNING, &hdev->flags);`
442			`MOD_DEC_USE_COUNT;`
443			`}`
444
445			`write_unlock_irqrestore(&bfusb->lock, flags);`
446
447			`return err;`
448			`}`
449
450			`static int bfusb_flush(struct hci_dev *hdev)`
451			`{`
452			`struct bfusb bfusb = (struct bfusb ) hdev->driver_data;`
453
454			`BT_DBG("hdev %p bfusb %p", hdev, bfusb);`
455
456			`skb_queue_purge(&bfusb->transmit_q);`
457
458			`return 0;`
459			`}`
460
461			`static int bfusb_close(struct hci_dev *hdev)`
462			`{`
463			`struct bfusb bfusb = (struct bfusb ) hdev->driver_data;`
464			`unsigned long flags;`
465
466			`BT_DBG("hdev %p bfusb %p", hdev, bfusb);`
467
468			`if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))`
469			`return 0;`
470
471			`write_lock_irqsave(&bfusb->lock, flags);`
472
473			`bfusb_unlink_urbs(bfusb);`
474			`bfusb_flush(hdev);`
475
476			`write_unlock_irqrestore(&bfusb->lock, flags);`
477
478			`MOD_DEC_USE_COUNT;`
479
480			`return 0;`
481			`}`
482
483			`static int bfusb_send_frame(struct sk_buff *skb)`
484			`{`
485			`struct hci_dev hdev = (struct hci_dev ) skb->dev;`
486			`struct bfusb *bfusb;`
487			`struct sk_buff *nskb;`
488			`unsigned char buf[3];`
489			`int sent = 0, size, count;`
490
491			`BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, skb->pkt_type, skb->len);`
492
493			`if (!hdev) {`
494			`BT_ERR("Frame for unknown HCI device (hdev=NULL)");`
495			`return -ENODEV;`
496			`}`
497
498			`if (!test_bit(HCI_RUNNING, &hdev->flags))`
499			`return -EBUSY;`
500
501			`bfusb = (struct bfusb *) hdev->driver_data;`
502
503			`switch (skb->pkt_type) {`
504			`case HCI_COMMAND_PKT:`
505			`hdev->stat.cmd_tx++;`
506			`break;`
507			`case HCI_ACLDATA_PKT:`
508			`hdev->stat.acl_tx++;`
509			`break;`
510			`case HCI_SCODATA_PKT:`
511			`hdev->stat.sco_tx++;`
512			`break;`
513			`};`
514
515			`/* Prepend skb with frame type */`
516			`memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);`
517
518			`count = skb->len;`
519
520			`/* Max HCI frame size seems to be 1511 + 1 */`
521			`if (!(nskb = bluez_skb_alloc(count + 32, GFP_ATOMIC))) {`
522			`BT_ERR("Can't allocate memory for new packet");`
523			`return -ENOMEM;`
524			`}`
525
526			`nskb->dev = (void *) bfusb;`
527
528			`while (count) {`
529			`size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);`
530
531			`buf[0] = 0xc1 \| ((sent == 0) ? 0x04 : 0) \| ((count == size) ? 0x08 : 0);`
532			`buf[1] = 0x00;`
533			`buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;`
534
535			`memcpy(skb_put(nskb, 3), buf, 3);`
536			`memcpy(skb_put(nskb, size), skb->data + sent, size);`
537
538			`sent += size;`
539			`count -= size;`
540			`}`
541
542			`/* Don't send frame with multiple size of bulk max packet */`
543			`if ((nskb->len % bfusb->bulk_pkt_size) == 0) {`
544			`buf[0] = 0xdd;`
545			`buf[1] = 0x00;`
546			`memcpy(skb_put(nskb, 2), buf, 2);`
547			`}`
548
549			`read_lock(&bfusb->lock);`
550
551			`skb_queue_tail(&bfusb->transmit_q, nskb);`
552			`bfusb_tx_wakeup(bfusb);`
553
554			`read_unlock(&bfusb->lock);`
555
556			`kfree_skb(skb);`
557
558			`return 0;`
559			`}`
560
561			`static void bfusb_destruct(struct hci_dev *hdev)`
562			`{`
563			`struct bfusb bfusb = (struct bfusb ) hdev->driver_data;`
564
565			`BT_DBG("hdev %p bfusb %p", hdev, bfusb);`
566
567			`kfree(bfusb);`
568			`}`
569
570			`static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)`
571			`{`
572			`return -ENOIOCTLCMD;`
573			`}`
574
575
576			`static int bfusb_load_firmware(struct bfusb bfusb, unsigned char firmware, int count)`
577			`{`
578			`unsigned char *buf;`
579			`int err, pipe, len, size, sent = 0;`
580
581			`BT_DBG("bfusb %p udev %p firmware %p count %d", bfusb, bfusb->udev, firmware, count);`
582
583			`BT_INFO("BlueFRITZ! USB loading firmware");`
584
585			`if (usb_set_configuration(bfusb->udev, 1) < 0) {`
586			`BT_ERR("Can't change to loading configuration");`
587			`return -EBUSY;`
588			`}`
589
590			`buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);`
591			`if (!buf) {`
592			`BT_ERR("Can't allocate memory chunk for firmware");`
593			`return -ENOMEM;`
594			`}`
595
596			`pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);`
597
598			`while (count) {`
599			`size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);`
600
601			`memcpy(buf, firmware + sent, size);`
602
603			`err = usb_bulk_msg(bfusb->udev, pipe, buf, size,`
604			`&len, BFUSB_BLOCK_TIMEOUT);`
605
606			`if (err \|\| (len != size)) {`
607			`BT_ERR("Error in firmware loading");`
608			`goto error;`
609			`}`
610
611			`sent += size;`
612			`count -= size;`
613			`}`
614
615			`if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,`
616			`&len, BFUSB_BLOCK_TIMEOUT)) < 0) {`
617			`BT_ERR("Error in null packet request");`
618			`goto error;`
619			`}`
620
621			`if ((err = usb_set_configuration(bfusb->udev, 2)) < 0) {`
622			`BT_ERR("Can't change to running configuration");`
623			`goto error;`
624			`}`
625
626			`BT_INFO("BlueFRITZ! USB device ready");`
627
628			`kfree(buf);`
629			`return 0;`
630
631			`error:`
632			`kfree(buf);`
633
634			`pipe = usb_sndctrlpipe(bfusb->udev, 0);`
635
636			`usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,`
637			`0, 0, 0, NULL, 0, BFUSB_BLOCK_TIMEOUT);`
638
639			`return err;`
640			`}`
641
642			`static void bfusb_probe(struct usb_device udev, unsigned int ifnum, const struct usb_device_id *id)`
643			`{`
644			`const struct firmware *firmware;`
645			`char device[16];`
646			`struct usb_interface *iface;`
647			`struct usb_interface_descriptor *iface_desc;`
648			`struct usb_endpoint_descriptor *bulk_out_ep;`
649			`struct usb_endpoint_descriptor *bulk_in_ep;`
650			`struct hci_dev *hdev;`
651			`struct bfusb *bfusb;`
652
653			`BT_DBG("udev %p ifnum %d id %p", udev, ifnum, id);`
654
655			`/* Check number of endpoints */`
656			`iface = &udev->actconfig->interface[0];`
657			`iface_desc = &iface->altsetting[0];`
658
659			`if (iface_desc->bNumEndpoints < 2)`
660			`return NULL;`
661
662			`bulk_out_ep = &iface_desc->endpoint[0];`
663			`bulk_in_ep = &iface_desc->endpoint[1];`
664
665			`if (!bulk_out_ep \|\| !bulk_in_ep) {`
666			`BT_ERR("Bulk endpoints not found");`
667			`goto done;`
668			`}`
669
670			`/* Initialize control structure and load firmware */`
671			`if (!(bfusb = kmalloc(sizeof(struct bfusb), GFP_KERNEL))) {`
672			`BT_ERR("Can't allocate memory for control structure");`
673			`goto done;`
674			`}`
675
676			`memset(bfusb, 0, sizeof(struct bfusb));`
677
678			`bfusb->udev = udev;`
679			`bfusb->bulk_in_ep = bulk_in_ep->bEndpointAddress;`
680			`bfusb->bulk_out_ep = bulk_out_ep->bEndpointAddress;`
681			`bfusb->bulk_pkt_size = bulk_out_ep->wMaxPacketSize;`
682
683			`bfusb->lock = RW_LOCK_UNLOCKED;`
684
685			`bfusb->reassembly = NULL;`
686
687			`skb_queue_head_init(&bfusb->transmit_q);`
688			`skb_queue_head_init(&bfusb->pending_q);`
689			`skb_queue_head_init(&bfusb->completed_q);`
690
691			`snprintf(device, sizeof(device), "bfusb%3.3d%3.3d", udev->bus->busnum, udev->devnum);`
692
693			`if (request_firmware(&firmware, "bfubase.frm", device) < 0) {`
694			`BT_ERR("Firmware request failed");`
695			`goto error;`
696			`}`
697
698			`if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {`
699			`BT_ERR("Firmware loading failed");`
700			`goto release;`
701			`}`
702
703			`release_firmware(firmware);`
704
705			`/* Initialize and register HCI device */`
706			`hdev = &bfusb->hdev;`
707
708			`hdev->type = HCI_USB;`
709			`hdev->driver_data = bfusb;`
710
711			`hdev->open = bfusb_open;`
712			`hdev->close = bfusb_close;`
713			`hdev->flush = bfusb_flush;`
714			`hdev->send = bfusb_send_frame;`
715			`hdev->destruct = bfusb_destruct;`
716			`hdev->ioctl = bfusb_ioctl;`
717
718			`if (hci_register_dev(hdev) < 0) {`
719			`BT_ERR("Can't register HCI device");`
720			`goto error;`
721			`}`
722
723			`return bfusb;`
724
725			`release:`
726			`release_firmware(firmware);`
727
728			`error:`
729			`kfree(bfusb);`
730
731			`done:`
732			`return NULL;`
733			`}`
734
735			`static void bfusb_disconnect(struct usb_device udev, void ptr)`
736			`{`
737			`struct bfusb bfusb = (struct bfusb ) ptr;`
738			`struct hci_dev *hdev = &bfusb->hdev;`
739
740			`BT_DBG("udev %p ptr %p", udev, ptr);`
741
742			`if (!hdev)`
743			`return;`
744
745			`bfusb_close(hdev);`
746
747			`if (hci_unregister_dev(hdev) < 0)`
748			`BT_ERR("Can't unregister HCI device %s", hdev->name);`
749			`}`
750
751			`static struct usb_driver bfusb_driver = {`
752			`name: "bfusb",`
753			`probe: bfusb_probe,`
754			`disconnect: bfusb_disconnect,`
755			`id_table: bfusb_table,`
756			`};`
757
758			`static int __init bfusb_init(void)`
759			`{`
760			`int err;`
761
762			`BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);`
763			`BT_INFO("Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>");`
764
765			`if ((err = usb_register(&bfusb_driver)) < 0)`
766			`BT_ERR("Failed to register BlueFRITZ! USB driver");`
767
768			`return err;`
769			`}`
770
771			`static void __exit bfusb_cleanup(void)`
772			`{`
773			`usb_deregister(&bfusb_driver);`
774			`}`
775
776			`module_init(bfusb_init);`
777			`module_exit(bfusb_cleanup);`
778
779			`MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");`
780			`MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);`
781			`MODULE_LICENSE("GPL");`