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@@ -2,7 +2,7 @@
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*
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* Generic Bluetooth USB driver
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*
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- * Copyright (C) 2005-2007 Marcel Holtmann <marcel@holtmann.org>
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+ * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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@@ -41,7 +41,7 @@
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#define BT_DBG(D...)
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#endif
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-#define VERSION "0.2"
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+#define VERSION "0.3"
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static int ignore_dga;
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static int ignore_csr;
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@@ -160,12 +160,16 @@ static struct usb_device_id blacklist_table[] = {
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{ } /* Terminating entry */
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};
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+#define BTUSB_MAX_ISOC_FRAMES 10
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+
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#define BTUSB_INTR_RUNNING 0
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#define BTUSB_BULK_RUNNING 1
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+#define BTUSB_ISOC_RUNNING 2
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struct btusb_data {
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struct hci_dev *hdev;
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struct usb_device *udev;
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+ struct usb_interface *isoc;
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spinlock_t lock;
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@@ -176,10 +180,15 @@ struct btusb_data {
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struct usb_anchor tx_anchor;
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struct usb_anchor intr_anchor;
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struct usb_anchor bulk_anchor;
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+ struct usb_anchor isoc_anchor;
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struct usb_endpoint_descriptor *intr_ep;
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struct usb_endpoint_descriptor *bulk_tx_ep;
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struct usb_endpoint_descriptor *bulk_rx_ep;
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+ struct usb_endpoint_descriptor *isoc_tx_ep;
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+ struct usb_endpoint_descriptor *isoc_rx_ep;
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+
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+ int isoc_altsetting;
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};
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static void btusb_intr_complete(struct urb *urb)
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@@ -195,6 +204,8 @@ static void btusb_intr_complete(struct urb *urb)
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return;
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if (urb->status == 0) {
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+ hdev->stat.byte_rx += urb->actual_length;
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+
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if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
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urb->transfer_buffer,
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urb->actual_length) < 0) {
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@@ -216,7 +227,7 @@ static void btusb_intr_complete(struct urb *urb)
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}
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}
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-static inline int btusb_submit_intr_urb(struct hci_dev *hdev)
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+static int btusb_submit_intr_urb(struct hci_dev *hdev)
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{
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struct btusb_data *data = hdev->driver_data;
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struct urb *urb;
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@@ -226,6 +237,9 @@ static inline int btusb_submit_intr_urb(struct hci_dev *hdev)
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BT_DBG("%s", hdev->name);
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+ if (!data->intr_ep)
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+ return -ENODEV;
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+
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!urb)
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return -ENOMEM;
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@@ -274,6 +288,8 @@ static void btusb_bulk_complete(struct urb *urb)
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return;
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if (urb->status == 0) {
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+ hdev->stat.byte_rx += urb->actual_length;
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+
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if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
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urb->transfer_buffer,
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urb->actual_length) < 0) {
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@@ -295,7 +311,7 @@ static void btusb_bulk_complete(struct urb *urb)
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}
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}
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-static inline int btusb_submit_bulk_urb(struct hci_dev *hdev)
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+static int btusb_submit_bulk_urb(struct hci_dev *hdev)
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{
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struct btusb_data *data = hdev->driver_data;
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struct urb *urb;
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@@ -305,6 +321,9 @@ static inline int btusb_submit_bulk_urb(struct hci_dev *hdev)
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BT_DBG("%s", hdev->name);
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+ if (!data->bulk_rx_ep)
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+ return -ENODEV;
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+
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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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@@ -339,6 +358,127 @@ static inline int btusb_submit_bulk_urb(struct hci_dev *hdev)
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return err;
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}
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+static void btusb_isoc_complete(struct urb *urb)
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+{
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+ struct hci_dev *hdev = urb->context;
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+ struct btusb_data *data = hdev->driver_data;
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+ int i, err;
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+
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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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+
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+ if (!test_bit(HCI_RUNNING, &hdev->flags))
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+ return;
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+
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+ if (urb->status == 0) {
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+ for (i = 0; i < urb->number_of_packets; i++) {
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+ unsigned int offset = urb->iso_frame_desc[i].offset;
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+ unsigned int length = urb->iso_frame_desc[i].actual_length;
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+
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+ if (urb->iso_frame_desc[i].status)
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+ continue;
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+
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+ hdev->stat.byte_rx += length;
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+
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+ if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
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+ urb->transfer_buffer + offset,
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+ length) < 0) {
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+ BT_ERR("%s corrupted SCO packet", hdev->name);
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+ hdev->stat.err_rx++;
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+ }
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+ }
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+ }
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+
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+ if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
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+ return;
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+
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+ usb_anchor_urb(urb, &data->isoc_anchor);
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+
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+ err = usb_submit_urb(urb, GFP_ATOMIC);
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+ if (err < 0) {
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+ BT_ERR("%s urb %p failed to resubmit (%d)",
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+ hdev->name, urb, -err);
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+ usb_unanchor_urb(urb);
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+ }
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+}
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+
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+static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
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+{
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+ int i, offset = 0;
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+
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+ BT_DBG("len %d mtu %d", len, mtu);
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+
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+ for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
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+ i++, offset += mtu, len -= mtu) {
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+ urb->iso_frame_desc[i].offset = offset;
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+ urb->iso_frame_desc[i].length = mtu;
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+ }
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+
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+ if (len && i < BTUSB_MAX_ISOC_FRAMES) {
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+ urb->iso_frame_desc[i].offset = offset;
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+ urb->iso_frame_desc[i].length = len;
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+ i++;
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+ }
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+
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+ urb->number_of_packets = i;
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+}
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+
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+static int btusb_submit_isoc_urb(struct hci_dev *hdev)
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+{
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+ struct btusb_data *data = hdev->driver_data;
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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;
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+
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+ BT_DBG("%s", hdev->name);
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+
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+ if (!data->isoc_rx_ep)
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+ return -ENODEV;
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+
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+ urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
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+ if (!urb)
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+ return -ENOMEM;
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+
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+ size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
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+ BTUSB_MAX_ISOC_FRAMES;
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+
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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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+
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+ pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
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+
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+ urb->dev = data->udev;
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+ urb->pipe = pipe;
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+ urb->context = hdev;
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+ urb->complete = btusb_isoc_complete;
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+ urb->interval = data->isoc_rx_ep->bInterval;
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+
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+ urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
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+ urb->transfer_buffer = buf;
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+ urb->transfer_buffer_length = size;
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+
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+ __fill_isoc_descriptor(urb, size,
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+ le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
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+
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+ usb_anchor_urb(urb, &data->isoc_anchor);
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+
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+ err = usb_submit_urb(urb, GFP_KERNEL);
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+ if (err < 0) {
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+ BT_ERR("%s urb %p submission failed (%d)",
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+ hdev->name, urb, -err);
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+ usb_unanchor_urb(urb);
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+ kfree(buf);
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+ }
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+
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+ usb_free_urb(urb);
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+
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+ return err;
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+}
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+
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static void btusb_tx_complete(struct urb *urb)
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{
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struct sk_buff *skb = urb->context;
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@@ -392,6 +532,9 @@ static int btusb_close(struct hci_dev *hdev)
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if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
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return 0;
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+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
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+ usb_kill_anchored_urbs(&data->intr_anchor);
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+
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clear_bit(BTUSB_BULK_RUNNING, &data->flags);
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usb_kill_anchored_urbs(&data->bulk_anchor);
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@@ -453,6 +596,9 @@ static int btusb_send_frame(struct sk_buff *skb)
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break;
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case HCI_ACLDATA_PKT:
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+ if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
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+ return -ENODEV;
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+
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!urb)
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return -ENOMEM;
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@@ -467,9 +613,31 @@ static int btusb_send_frame(struct sk_buff *skb)
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break;
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case HCI_SCODATA_PKT:
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+ if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
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+ return -ENODEV;
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+
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+ urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
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+ if (!urb)
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+ return -ENOMEM;
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+
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+ pipe = usb_sndisocpipe(data->udev,
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+ data->isoc_tx_ep->bEndpointAddress);
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+
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+ urb->dev = data->udev;
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+ urb->pipe = pipe;
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+ urb->context = skb;
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+ urb->complete = btusb_tx_complete;
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+ urb->interval = data->isoc_tx_ep->bInterval;
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+
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+ urb->transfer_flags = URB_ISO_ASAP;
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+ urb->transfer_buffer = skb->data;
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+ urb->transfer_buffer_length = skb->len;
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+
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+ __fill_isoc_descriptor(urb, skb->len,
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+ le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
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+
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hdev->stat.sco_tx++;
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- kfree_skb(skb);
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- return 0;
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+ break;
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default:
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return -EILSEQ;
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@@ -508,22 +676,86 @@ static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
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schedule_work(&data->work);
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}
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+static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
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+{
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+ struct btusb_data *data = hdev->driver_data;
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+ struct usb_interface *intf = data->isoc;
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+ struct usb_endpoint_descriptor *ep_desc;
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+ int i, err;
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+
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+ if (!data->isoc)
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+ return -ENODEV;
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+
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+ err = usb_set_interface(data->udev, 1, altsetting);
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+ if (err < 0) {
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+ BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
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+ return err;
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+ }
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+
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+ data->isoc_altsetting = altsetting;
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+
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+ data->isoc_tx_ep = NULL;
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+ data->isoc_rx_ep = NULL;
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+
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+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
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+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
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+
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+ if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
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+ data->isoc_tx_ep = ep_desc;
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+ continue;
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+ }
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+
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+ if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
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+ data->isoc_rx_ep = ep_desc;
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+ continue;
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+ }
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+ }
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+
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+ if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
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+ BT_ERR("%s invalid SCO descriptors", hdev->name);
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+ return -ENODEV;
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+ }
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+
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+ return 0;
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+}
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+
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static void btusb_work(struct work_struct *work)
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{
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struct btusb_data *data = container_of(work, struct btusb_data, work);
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struct hci_dev *hdev = data->hdev;
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- if (hdev->conn_hash.acl_num == 0) {
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+ if (hdev->conn_hash.acl_num > 0) {
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+ if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
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+ if (btusb_submit_bulk_urb(hdev) < 0)
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+ clear_bit(BTUSB_BULK_RUNNING, &data->flags);
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+ else
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+ btusb_submit_bulk_urb(hdev);
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+ }
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+ } else {
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clear_bit(BTUSB_BULK_RUNNING, &data->flags);
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usb_kill_anchored_urbs(&data->bulk_anchor);
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- return;
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}
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- if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
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- if (btusb_submit_bulk_urb(hdev) < 0)
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- clear_bit(BTUSB_BULK_RUNNING, &data->flags);
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- else
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- btusb_submit_bulk_urb(hdev);
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+ if (hdev->conn_hash.sco_num > 0) {
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+ if (data->isoc_altsetting != 2) {
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+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
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+ usb_kill_anchored_urbs(&data->isoc_anchor);
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+
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+ if (__set_isoc_interface(hdev, 2) < 0)
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+ return;
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+ }
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+
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+ if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
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+ if (btusb_submit_isoc_urb(hdev) < 0)
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+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
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+ else
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+ btusb_submit_isoc_urb(hdev);
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+ }
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+ } else {
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+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
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+ usb_kill_anchored_urbs(&data->isoc_anchor);
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+
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+ __set_isoc_interface(hdev, 0);
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}
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}
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@@ -597,6 +829,7 @@ static int btusb_probe(struct usb_interface *intf,
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init_usb_anchor(&data->tx_anchor);
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init_usb_anchor(&data->intr_anchor);
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init_usb_anchor(&data->bulk_anchor);
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+ init_usb_anchor(&data->isoc_anchor);
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hdev = hci_alloc_dev();
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if (!hdev) {
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@@ -620,6 +853,9 @@ static int btusb_probe(struct usb_interface *intf,
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hdev->owner = THIS_MODULE;
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+ /* interface numbers are hardcoded in the spec */
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+ data->isoc = usb_ifnum_to_if(data->udev, 1);
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+
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if (reset || id->driver_info & BTUSB_RESET)
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set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
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@@ -628,11 +864,16 @@ static int btusb_probe(struct usb_interface *intf,
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set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
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}
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+ if (id->driver_info & BTUSB_BROKEN_ISOC)
|
|
|
+ data->isoc = NULL;
|
|
|
+
|
|
|
if (id->driver_info & BTUSB_SNIFFER) {
|
|
|
- struct usb_device *udev = interface_to_usbdev(intf);
|
|
|
+ struct usb_device *udev = data->udev;
|
|
|
|
|
|
if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
|
|
|
set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
|
|
|
+
|
|
|
+ data->isoc = NULL;
|
|
|
}
|
|
|
|
|
|
if (id->driver_info & BTUSB_BCM92035) {
|
|
@@ -646,6 +887,16 @@ static int btusb_probe(struct usb_interface *intf,
|
|
|
}
|
|
|
}
|
|
|
|
|
|
+ if (data->isoc) {
|
|
|
+ err = usb_driver_claim_interface(&btusb_driver,
|
|
|
+ data->isoc, NULL);
|
|
|
+ if (err < 0) {
|
|
|
+ hci_free_dev(hdev);
|
|
|
+ kfree(data);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
err = hci_register_dev(hdev);
|
|
|
if (err < 0) {
|
|
|
hci_free_dev(hdev);
|
|
@@ -670,6 +921,9 @@ static void btusb_disconnect(struct usb_interface *intf)
|
|
|
|
|
|
hdev = data->hdev;
|
|
|
|
|
|
+ if (data->isoc)
|
|
|
+ usb_driver_release_interface(&btusb_driver, data->isoc);
|
|
|
+
|
|
|
usb_set_intfdata(intf, NULL);
|
|
|
|
|
|
hci_unregister_dev(hdev);
|