/* * * Digianswer Bluetooth USB driver * * Copyright (C) 2004-2007 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/kernel.h> #include <linux/module.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/usb.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include "h4_recv.h" #define VERSION "0.11" static const struct usb_device_id bpa10x_table[] = { /* Tektronix BPA 100/105 (Digianswer) */ { USB_DEVICE(0x08fd, 0x0002) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, bpa10x_table); struct bpa10x_data { struct hci_dev *hdev; struct usb_device *udev; struct usb_anchor tx_anchor; struct usb_anchor rx_anchor; struct sk_buff *rx_skb[2]; }; static void bpa10x_tx_complete(struct urb *urb) { struct sk_buff *skb = urb->context; struct hci_dev *hdev = (struct hci_dev *) skb->dev; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) goto done; if (!urb->status) hdev->stat.byte_tx += urb->transfer_buffer_length; else hdev->stat.err_tx++; done: kfree(urb->setup_packet); kfree_skb(skb); } #define HCI_VENDOR_HDR_SIZE 5 #define HCI_RECV_VENDOR \ .type = HCI_VENDOR_PKT, \ .hlen = HCI_VENDOR_HDR_SIZE, \ .loff = 3, \ .lsize = 2, \ .maxlen = HCI_MAX_FRAME_SIZE static const struct h4_recv_pkt bpa10x_recv_pkts[] = { { H4_RECV_ACL, .recv = hci_recv_frame }, { H4_RECV_SCO, .recv = hci_recv_frame }, { H4_RECV_EVENT, .recv = hci_recv_frame }, { HCI_RECV_VENDOR, .recv = hci_recv_diag }, }; static void bpa10x_rx_complete(struct urb *urb) { struct hci_dev *hdev = urb->context; struct bpa10x_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) return; if (urb->status == 0) { bool idx = usb_pipebulk(urb->pipe); data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx], urb->transfer_buffer, urb->actual_length, bpa10x_recv_pkts, ARRAY_SIZE(bpa10x_recv_pkts)); if (IS_ERR(data->rx_skb[idx])) { bt_dev_err(hdev, "corrupted event packet"); hdev->stat.err_rx++; data->rx_skb[idx] = NULL; } } usb_anchor_urb(urb, &data->rx_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err); usb_unanchor_urb(urb); } } static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev) { struct bpa10x_data *data = hci_get_drvdata(hdev); struct urb *urb; unsigned char *buf; unsigned int pipe; int err, size = 16; BT_DBG("%s", hdev->name); urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return -ENOMEM; buf = kmalloc(size, GFP_KERNEL); if (!buf) { usb_free_urb(urb); return -ENOMEM; } pipe = usb_rcvintpipe(data->udev, 0x81); usb_fill_int_urb(urb, data->udev, pipe, buf, size, bpa10x_rx_complete, hdev, 1); urb->transfer_flags |= URB_FREE_BUFFER; usb_anchor_urb(urb, &data->rx_anchor); err = usb_submit_urb(urb, GFP_KERNEL); if (err < 0) { bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); usb_unanchor_urb(urb); } usb_free_urb(urb); return err; } static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev) { struct bpa10x_data *data = hci_get_drvdata(hdev); struct urb *urb; unsigned char *buf; unsigned int pipe; int err, size = 64; BT_DBG("%s", hdev->name); urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return -ENOMEM; buf = kmalloc(size, GFP_KERNEL); if (!buf) { usb_free_urb(urb); return -ENOMEM; } pipe = usb_rcvbulkpipe(data->udev, 0x82); usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, bpa10x_rx_complete, hdev); urb->transfer_flags |= URB_FREE_BUFFER; usb_anchor_urb(urb, &data->rx_anchor); err = usb_submit_urb(urb, GFP_KERNEL); if (err < 0) { bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); usb_unanchor_urb(urb); } usb_free_urb(urb); return err; } static int bpa10x_open(struct hci_dev *hdev) { struct bpa10x_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s", hdev->name); err = bpa10x_submit_intr_urb(hdev); if (err < 0) goto error; err = bpa10x_submit_bulk_urb(hdev); if (err < 0) goto error; return 0; error: usb_kill_anchored_urbs(&data->rx_anchor); return err; } static int bpa10x_close(struct hci_dev *hdev) { struct bpa10x_data *data = hci_get_drvdata(hdev); BT_DBG("%s", hdev->name); usb_kill_anchored_urbs(&data->rx_anchor); return 0; } static int bpa10x_flush(struct hci_dev *hdev) { struct bpa10x_data *data = hci_get_drvdata(hdev); BT_DBG("%s", hdev->name); usb_kill_anchored_urbs(&data->tx_anchor); return 0; } static int bpa10x_setup(struct hci_dev *hdev) { static const u8 req[] = { 0x07 }; struct sk_buff *skb; BT_DBG("%s", hdev->name); /* Read revision string */ skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); if (IS_ERR(skb)) return PTR_ERR(skb); bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); hci_set_fw_info(hdev, "%s", skb->data + 1); kfree_skb(skb); return 0; } static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb) { struct bpa10x_data *data = hci_get_drvdata(hdev); struct usb_ctrlrequest *dr; struct urb *urb; unsigned int pipe; int err; BT_DBG("%s", hdev->name); skb->dev = (void *) hdev; urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) return -ENOMEM; /* Prepend skb with frame type */ *(u8 *)skb_push(skb, 1) = hci_skb_pkt_type(skb); switch (hci_skb_pkt_type(skb)) { case HCI_COMMAND_PKT: dr = kmalloc(sizeof(*dr), GFP_ATOMIC); if (!dr) { usb_free_urb(urb); return -ENOMEM; } dr->bRequestType = USB_TYPE_VENDOR; dr->bRequest = 0; dr->wIndex = 0; dr->wValue = 0; dr->wLength = __cpu_to_le16(skb->len); pipe = usb_sndctrlpipe(data->udev, 0x00); usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, skb->data, skb->len, bpa10x_tx_complete, skb); hdev->stat.cmd_tx++; break; case HCI_ACLDATA_PKT: pipe = usb_sndbulkpipe(data->udev, 0x02); usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, bpa10x_tx_complete, skb); hdev->stat.acl_tx++; break; case HCI_SCODATA_PKT: pipe = usb_sndbulkpipe(data->udev, 0x02); usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, bpa10x_tx_complete, skb); hdev->stat.sco_tx++; break; default: usb_free_urb(urb); return -EILSEQ; } usb_anchor_urb(urb, &data->tx_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { bt_dev_err(hdev, "urb %p submission failed", urb); kfree(urb->setup_packet); usb_unanchor_urb(urb); } usb_free_urb(urb); return 0; } static int bpa10x_set_diag(struct hci_dev *hdev, bool enable) { const u8 req[] = { 0x00, enable }; struct sk_buff *skb; BT_DBG("%s", hdev->name); if (!test_bit(HCI_RUNNING, &hdev->flags)) return -ENETDOWN; /* Enable sniffer operation */ skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); if (IS_ERR(skb)) return PTR_ERR(skb); kfree_skb(skb); return 0; } static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct bpa10x_data *data; struct hci_dev *hdev; int err; BT_DBG("intf %p id %p", intf, id); if (intf->cur_altsetting->desc.bInterfaceNumber != 0) return -ENODEV; data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; data->udev = interface_to_usbdev(intf); init_usb_anchor(&data->tx_anchor); init_usb_anchor(&data->rx_anchor); hdev = hci_alloc_dev(); if (!hdev) return -ENOMEM; hdev->bus = HCI_USB; hci_set_drvdata(hdev, data); data->hdev = hdev; SET_HCIDEV_DEV(hdev, &intf->dev); hdev->open = bpa10x_open; hdev->close = bpa10x_close; hdev->flush = bpa10x_flush; hdev->setup = bpa10x_setup; hdev->send = bpa10x_send_frame; hdev->set_diag = bpa10x_set_diag; set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); err = hci_register_dev(hdev); if (err < 0) { hci_free_dev(hdev); return err; } usb_set_intfdata(intf, data); return 0; } static void bpa10x_disconnect(struct usb_interface *intf) { struct bpa10x_data *data = usb_get_intfdata(intf); BT_DBG("intf %p", intf); if (!data) return; usb_set_intfdata(intf, NULL); hci_unregister_dev(data->hdev); hci_free_dev(data->hdev); kfree_skb(data->rx_skb[0]); kfree_skb(data->rx_skb[1]); } static struct usb_driver bpa10x_driver = { .name = "bpa10x", .probe = bpa10x_probe, .disconnect = bpa10x_disconnect, .id_table = bpa10x_table, .disable_hub_initiated_lpm = 1, }; module_usb_driver(bpa10x_driver); MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL");