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445 lines
8.8 KiB
445 lines
8.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Digianswer Bluetooth USB driver |
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* |
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* Copyright (C) 2004-2007 Marcel Holtmann <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/types.h> |
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#include <linux/sched.h> |
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#include <linux/errno.h> |
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#include <linux/skbuff.h> |
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#include <linux/usb.h> |
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#include <net/bluetooth/bluetooth.h> |
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#include <net/bluetooth/hci_core.h> |
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#include "h4_recv.h" |
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#define VERSION "0.11" |
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static const struct usb_device_id bpa10x_table[] = { |
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/* Tektronix BPA 100/105 (Digianswer) */ |
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{ USB_DEVICE(0x08fd, 0x0002) }, |
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{ } /* Terminating entry */ |
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}; |
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MODULE_DEVICE_TABLE(usb, bpa10x_table); |
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struct bpa10x_data { |
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struct hci_dev *hdev; |
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struct usb_device *udev; |
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struct usb_anchor tx_anchor; |
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struct usb_anchor rx_anchor; |
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struct sk_buff *rx_skb[2]; |
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}; |
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static void bpa10x_tx_complete(struct urb *urb) |
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{ |
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struct sk_buff *skb = urb->context; |
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struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
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BT_DBG("%s urb %p status %d count %d", hdev->name, |
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urb, urb->status, urb->actual_length); |
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if (!test_bit(HCI_RUNNING, &hdev->flags)) |
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goto done; |
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if (!urb->status) |
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hdev->stat.byte_tx += urb->transfer_buffer_length; |
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else |
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hdev->stat.err_tx++; |
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done: |
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kfree(urb->setup_packet); |
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kfree_skb(skb); |
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} |
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#define HCI_VENDOR_HDR_SIZE 5 |
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#define HCI_RECV_VENDOR \ |
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.type = HCI_VENDOR_PKT, \ |
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.hlen = HCI_VENDOR_HDR_SIZE, \ |
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.loff = 3, \ |
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.lsize = 2, \ |
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.maxlen = HCI_MAX_FRAME_SIZE |
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static const struct h4_recv_pkt bpa10x_recv_pkts[] = { |
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{ H4_RECV_ACL, .recv = hci_recv_frame }, |
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{ H4_RECV_SCO, .recv = hci_recv_frame }, |
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{ H4_RECV_EVENT, .recv = hci_recv_frame }, |
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{ HCI_RECV_VENDOR, .recv = hci_recv_diag }, |
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}; |
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static void bpa10x_rx_complete(struct urb *urb) |
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{ |
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struct hci_dev *hdev = urb->context; |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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int err; |
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BT_DBG("%s urb %p status %d count %d", hdev->name, |
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urb, urb->status, urb->actual_length); |
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if (!test_bit(HCI_RUNNING, &hdev->flags)) |
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return; |
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if (urb->status == 0) { |
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bool idx = usb_pipebulk(urb->pipe); |
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data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx], |
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urb->transfer_buffer, |
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urb->actual_length, |
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bpa10x_recv_pkts, |
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ARRAY_SIZE(bpa10x_recv_pkts)); |
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if (IS_ERR(data->rx_skb[idx])) { |
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bt_dev_err(hdev, "corrupted event packet"); |
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hdev->stat.err_rx++; |
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data->rx_skb[idx] = NULL; |
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} |
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} |
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usb_anchor_urb(urb, &data->rx_anchor); |
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err = usb_submit_urb(urb, GFP_ATOMIC); |
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if (err < 0) { |
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bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err); |
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usb_unanchor_urb(urb); |
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} |
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} |
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static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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struct urb *urb; |
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unsigned char *buf; |
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unsigned int pipe; |
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int err, size = 16; |
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BT_DBG("%s", hdev->name); |
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urb = usb_alloc_urb(0, GFP_KERNEL); |
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if (!urb) |
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return -ENOMEM; |
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buf = kmalloc(size, GFP_KERNEL); |
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if (!buf) { |
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usb_free_urb(urb); |
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return -ENOMEM; |
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} |
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pipe = usb_rcvintpipe(data->udev, 0x81); |
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usb_fill_int_urb(urb, data->udev, pipe, buf, size, |
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bpa10x_rx_complete, hdev, 1); |
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urb->transfer_flags |= URB_FREE_BUFFER; |
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usb_anchor_urb(urb, &data->rx_anchor); |
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err = usb_submit_urb(urb, GFP_KERNEL); |
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if (err < 0) { |
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bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); |
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usb_unanchor_urb(urb); |
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} |
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usb_free_urb(urb); |
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return err; |
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} |
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static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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struct urb *urb; |
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unsigned char *buf; |
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unsigned int pipe; |
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int err, size = 64; |
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BT_DBG("%s", hdev->name); |
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urb = usb_alloc_urb(0, GFP_KERNEL); |
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if (!urb) |
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return -ENOMEM; |
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buf = kmalloc(size, GFP_KERNEL); |
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if (!buf) { |
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usb_free_urb(urb); |
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return -ENOMEM; |
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} |
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pipe = usb_rcvbulkpipe(data->udev, 0x82); |
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usb_fill_bulk_urb(urb, data->udev, pipe, |
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buf, size, bpa10x_rx_complete, hdev); |
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urb->transfer_flags |= URB_FREE_BUFFER; |
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usb_anchor_urb(urb, &data->rx_anchor); |
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err = usb_submit_urb(urb, GFP_KERNEL); |
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if (err < 0) { |
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bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err); |
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usb_unanchor_urb(urb); |
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} |
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usb_free_urb(urb); |
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return err; |
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} |
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static int bpa10x_open(struct hci_dev *hdev) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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int err; |
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BT_DBG("%s", hdev->name); |
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err = bpa10x_submit_intr_urb(hdev); |
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if (err < 0) |
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goto error; |
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err = bpa10x_submit_bulk_urb(hdev); |
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if (err < 0) |
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goto error; |
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return 0; |
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error: |
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usb_kill_anchored_urbs(&data->rx_anchor); |
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return err; |
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} |
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static int bpa10x_close(struct hci_dev *hdev) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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BT_DBG("%s", hdev->name); |
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usb_kill_anchored_urbs(&data->rx_anchor); |
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return 0; |
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} |
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static int bpa10x_flush(struct hci_dev *hdev) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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BT_DBG("%s", hdev->name); |
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usb_kill_anchored_urbs(&data->tx_anchor); |
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return 0; |
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} |
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static int bpa10x_setup(struct hci_dev *hdev) |
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{ |
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static const u8 req[] = { 0x07 }; |
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struct sk_buff *skb; |
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BT_DBG("%s", hdev->name); |
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/* Read revision string */ |
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skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); |
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if (IS_ERR(skb)) |
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return PTR_ERR(skb); |
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bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); |
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hci_set_fw_info(hdev, "%s", skb->data + 1); |
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kfree_skb(skb); |
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return 0; |
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} |
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static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
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{ |
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struct bpa10x_data *data = hci_get_drvdata(hdev); |
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struct usb_ctrlrequest *dr; |
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struct urb *urb; |
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unsigned int pipe; |
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int err; |
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BT_DBG("%s", hdev->name); |
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skb->dev = (void *) hdev; |
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urb = usb_alloc_urb(0, GFP_KERNEL); |
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if (!urb) |
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return -ENOMEM; |
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/* Prepend skb with frame type */ |
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*(u8 *)skb_push(skb, 1) = hci_skb_pkt_type(skb); |
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switch (hci_skb_pkt_type(skb)) { |
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case HCI_COMMAND_PKT: |
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dr = kmalloc(sizeof(*dr), GFP_KERNEL); |
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if (!dr) { |
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usb_free_urb(urb); |
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return -ENOMEM; |
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} |
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dr->bRequestType = USB_TYPE_VENDOR; |
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dr->bRequest = 0; |
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dr->wIndex = 0; |
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dr->wValue = 0; |
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dr->wLength = __cpu_to_le16(skb->len); |
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pipe = usb_sndctrlpipe(data->udev, 0x00); |
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usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, |
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skb->data, skb->len, bpa10x_tx_complete, skb); |
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hdev->stat.cmd_tx++; |
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break; |
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case HCI_ACLDATA_PKT: |
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pipe = usb_sndbulkpipe(data->udev, 0x02); |
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usb_fill_bulk_urb(urb, data->udev, pipe, |
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skb->data, skb->len, bpa10x_tx_complete, skb); |
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hdev->stat.acl_tx++; |
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break; |
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case HCI_SCODATA_PKT: |
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pipe = usb_sndbulkpipe(data->udev, 0x02); |
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usb_fill_bulk_urb(urb, data->udev, pipe, |
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skb->data, skb->len, bpa10x_tx_complete, skb); |
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hdev->stat.sco_tx++; |
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break; |
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default: |
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usb_free_urb(urb); |
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return -EILSEQ; |
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} |
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usb_anchor_urb(urb, &data->tx_anchor); |
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err = usb_submit_urb(urb, GFP_KERNEL); |
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if (err < 0) { |
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bt_dev_err(hdev, "urb %p submission failed", urb); |
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kfree(urb->setup_packet); |
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usb_unanchor_urb(urb); |
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} |
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usb_free_urb(urb); |
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return err; |
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} |
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static int bpa10x_set_diag(struct hci_dev *hdev, bool enable) |
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{ |
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const u8 req[] = { 0x00, enable }; |
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struct sk_buff *skb; |
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BT_DBG("%s", hdev->name); |
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if (!test_bit(HCI_RUNNING, &hdev->flags)) |
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return -ENETDOWN; |
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/* Enable sniffer operation */ |
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skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT); |
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if (IS_ERR(skb)) |
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return PTR_ERR(skb); |
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kfree_skb(skb); |
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return 0; |
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} |
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static int bpa10x_probe(struct usb_interface *intf, |
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const struct usb_device_id *id) |
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{ |
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struct bpa10x_data *data; |
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struct hci_dev *hdev; |
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int err; |
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BT_DBG("intf %p id %p", intf, id); |
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if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
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return -ENODEV; |
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data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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data->udev = interface_to_usbdev(intf); |
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init_usb_anchor(&data->tx_anchor); |
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init_usb_anchor(&data->rx_anchor); |
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hdev = hci_alloc_dev(); |
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if (!hdev) |
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return -ENOMEM; |
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hdev->bus = HCI_USB; |
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hci_set_drvdata(hdev, data); |
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data->hdev = hdev; |
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SET_HCIDEV_DEV(hdev, &intf->dev); |
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hdev->open = bpa10x_open; |
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hdev->close = bpa10x_close; |
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hdev->flush = bpa10x_flush; |
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hdev->setup = bpa10x_setup; |
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hdev->send = bpa10x_send_frame; |
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hdev->set_diag = bpa10x_set_diag; |
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set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
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err = hci_register_dev(hdev); |
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if (err < 0) { |
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hci_free_dev(hdev); |
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return err; |
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} |
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usb_set_intfdata(intf, data); |
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return 0; |
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} |
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static void bpa10x_disconnect(struct usb_interface *intf) |
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{ |
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struct bpa10x_data *data = usb_get_intfdata(intf); |
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BT_DBG("intf %p", intf); |
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if (!data) |
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return; |
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usb_set_intfdata(intf, NULL); |
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hci_unregister_dev(data->hdev); |
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hci_free_dev(data->hdev); |
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kfree_skb(data->rx_skb[0]); |
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kfree_skb(data->rx_skb[1]); |
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} |
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static struct usb_driver bpa10x_driver = { |
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.name = "bpa10x", |
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.probe = bpa10x_probe, |
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.disconnect = bpa10x_disconnect, |
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.id_table = bpa10x_table, |
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.disable_hub_initiated_lpm = 1, |
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}; |
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module_usb_driver(bpa10x_driver); |
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MODULE_AUTHOR("Marcel Holtmann <[email protected]>"); |
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MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION); |
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MODULE_VERSION(VERSION); |
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MODULE_LICENSE("GPL");
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