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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/bluetooth/bpa10x.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/bluetooth/bpa10x.c')
-rw-r--r--drivers/bluetooth/bpa10x.c657
1 files changed, 657 insertions, 0 deletions
diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c
new file mode 100644
index 00000000000..2771c861f18
--- /dev/null
+++ b/drivers/bluetooth/bpa10x.c
@@ -0,0 +1,657 @@
+/*
+ *
+ * Digianswer Bluetooth USB driver
+ *
+ * Copyright (C) 2004-2005 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/errno.h>
+
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#ifndef CONFIG_BT_HCIBPA10X_DEBUG
+#undef BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "0.8"
+
+static int ignore = 0;
+
+static struct usb_device_id bpa10x_table[] = {
+ /* Tektronix BPA 100/105 (Digianswer) */
+ { USB_DEVICE(0x08fd, 0x0002) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, bpa10x_table);
+
+#define BPA10X_CMD_EP 0x00
+#define BPA10X_EVT_EP 0x81
+#define BPA10X_TX_EP 0x02
+#define BPA10X_RX_EP 0x82
+
+#define BPA10X_CMD_BUF_SIZE 252
+#define BPA10X_EVT_BUF_SIZE 16
+#define BPA10X_TX_BUF_SIZE 384
+#define BPA10X_RX_BUF_SIZE 384
+
+struct bpa10x_data {
+ struct hci_dev *hdev;
+ struct usb_device *udev;
+
+ rwlock_t lock;
+
+ struct sk_buff_head cmd_queue;
+ struct urb *cmd_urb;
+ struct urb *evt_urb;
+ struct sk_buff *evt_skb;
+ unsigned int evt_len;
+
+ struct sk_buff_head tx_queue;
+ struct urb *tx_urb;
+ struct urb *rx_urb;
+};
+
+#define HCI_VENDOR_HDR_SIZE 5
+
+struct hci_vendor_hdr {
+ __u8 type;
+ __u16 snum;
+ __u16 dlen;
+} __attribute__ ((packed));
+
+static void bpa10x_recv_bulk(struct bpa10x_data *data, unsigned char *buf, int count)
+{
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+ struct hci_vendor_hdr *vh;
+ struct sk_buff *skb;
+ int len;
+
+ while (count) {
+ switch (*buf++) {
+ case HCI_ACLDATA_PKT:
+ ah = (struct hci_acl_hdr *) buf;
+ len = HCI_ACL_HDR_SIZE + __le16_to_cpu(ah->dlen);
+ skb = bt_skb_alloc(len, GFP_ATOMIC);
+ if (skb) {
+ memcpy(skb_put(skb, len), buf, len);
+ skb->dev = (void *) data->hdev;
+ skb->pkt_type = HCI_ACLDATA_PKT;
+ hci_recv_frame(skb);
+ }
+ break;
+
+ case HCI_SCODATA_PKT:
+ sh = (struct hci_sco_hdr *) buf;
+ len = HCI_SCO_HDR_SIZE + sh->dlen;
+ skb = bt_skb_alloc(len, GFP_ATOMIC);
+ if (skb) {
+ memcpy(skb_put(skb, len), buf, len);
+ skb->dev = (void *) data->hdev;
+ skb->pkt_type = HCI_SCODATA_PKT;
+ hci_recv_frame(skb);
+ }
+ break;
+
+ case HCI_VENDOR_PKT:
+ vh = (struct hci_vendor_hdr *) buf;
+ len = HCI_VENDOR_HDR_SIZE + __le16_to_cpu(vh->dlen);
+ skb = bt_skb_alloc(len, GFP_ATOMIC);
+ if (skb) {
+ memcpy(skb_put(skb, len), buf, len);
+ skb->dev = (void *) data->hdev;
+ skb->pkt_type = HCI_VENDOR_PKT;
+ hci_recv_frame(skb);
+ }
+ break;
+
+ default:
+ len = count - 1;
+ break;
+ }
+
+ buf += len;
+ count -= (len + 1);
+ }
+}
+
+static int bpa10x_recv_event(struct bpa10x_data *data, unsigned char *buf, int size)
+{
+ BT_DBG("data %p buf %p size %d", data, buf, size);
+
+ if (data->evt_skb) {
+ struct sk_buff *skb = data->evt_skb;
+
+ memcpy(skb_put(skb, size), buf, size);
+
+ if (skb->len == data->evt_len) {
+ data->evt_skb = NULL;
+ data->evt_len = 0;
+ hci_recv_frame(skb);
+ }
+ } else {
+ struct sk_buff *skb;
+ struct hci_event_hdr *hdr;
+ unsigned char pkt_type;
+ int pkt_len = 0;
+
+ if (size < HCI_EVENT_HDR_SIZE + 1) {
+ BT_ERR("%s event packet block with size %d is too short",
+ data->hdev->name, size);
+ return -EILSEQ;
+ }
+
+ pkt_type = *buf++;
+ size--;
+
+ if (pkt_type != HCI_EVENT_PKT) {
+ BT_ERR("%s unexpected event packet start byte 0x%02x",
+ data->hdev->name, pkt_type);
+ return -EPROTO;
+ }
+
+ hdr = (struct hci_event_hdr *) buf;
+ pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
+
+ skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("%s no memory for new event packet",
+ data->hdev->name);
+ return -ENOMEM;
+ }
+
+ skb->dev = (void *) data->hdev;
+ skb->pkt_type = pkt_type;
+
+ memcpy(skb_put(skb, size), buf, size);
+
+ if (pkt_len == size) {
+ hci_recv_frame(skb);
+ } else {
+ data->evt_skb = skb;
+ data->evt_len = pkt_len;
+ }
+ }
+
+ return 0;
+}
+
+static void bpa10x_wakeup(struct bpa10x_data *data)
+{
+ struct urb *urb;
+ struct sk_buff *skb;
+ int err;
+
+ BT_DBG("data %p", data);
+
+ urb = data->cmd_urb;
+ if (urb->status == -EINPROGRESS)
+ skb = NULL;
+ else
+ skb = skb_dequeue(&data->cmd_queue);
+
+ if (skb) {
+ struct usb_ctrlrequest *cr;
+
+ if (skb->len > BPA10X_CMD_BUF_SIZE) {
+ BT_ERR("%s command packet with size %d is too big",
+ data->hdev->name, skb->len);
+ kfree_skb(skb);
+ return;
+ }
+
+ cr = (struct usb_ctrlrequest *) urb->setup_packet;
+ cr->wLength = __cpu_to_le16(skb->len);
+
+ memcpy(urb->transfer_buffer, skb->data, skb->len);
+ urb->transfer_buffer_length = skb->len;
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0 && err != -ENODEV) {
+ BT_ERR("%s submit failed for command urb %p with error %d",
+ data->hdev->name, urb, err);
+ skb_queue_head(&data->cmd_queue, skb);
+ } else
+ kfree_skb(skb);
+ }
+
+ urb = data->tx_urb;
+ if (urb->status == -EINPROGRESS)
+ skb = NULL;
+ else
+ skb = skb_dequeue(&data->tx_queue);
+
+ if (skb) {
+ memcpy(urb->transfer_buffer, skb->data, skb->len);
+ urb->transfer_buffer_length = skb->len;
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0 && err != -ENODEV) {
+ BT_ERR("%s submit failed for command urb %p with error %d",
+ data->hdev->name, urb, err);
+ skb_queue_head(&data->tx_queue, skb);
+ } else
+ kfree_skb(skb);
+ }
+}
+
+static void bpa10x_complete(struct urb *urb, struct pt_regs *regs)
+{
+ struct bpa10x_data *data = urb->context;
+ unsigned char *buf = urb->transfer_buffer;
+ int err, count = urb->actual_length;
+
+ BT_DBG("data %p urb %p buf %p count %d", data, urb, buf, count);
+
+ read_lock(&data->lock);
+
+ if (!test_bit(HCI_RUNNING, &data->hdev->flags))
+ goto unlock;
+
+ if (urb->status < 0 || !count)
+ goto resubmit;
+
+ if (usb_pipein(urb->pipe)) {
+ data->hdev->stat.byte_rx += count;
+
+ if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)
+ bpa10x_recv_event(data, buf, count);
+
+ if (usb_pipetype(urb->pipe) == PIPE_BULK)
+ bpa10x_recv_bulk(data, buf, count);
+ } else {
+ data->hdev->stat.byte_tx += count;
+
+ bpa10x_wakeup(data);
+ }
+
+resubmit:
+ if (usb_pipein(urb->pipe)) {
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0 && err != -ENODEV) {
+ BT_ERR("%s urb %p type %d resubmit status %d",
+ data->hdev->name, urb, usb_pipetype(urb->pipe), err);
+ }
+ }
+
+unlock:
+ read_unlock(&data->lock);
+}
+
+static inline struct urb *bpa10x_alloc_urb(struct usb_device *udev, unsigned int pipe, size_t size, int flags, void *data)
+{
+ struct urb *urb;
+ struct usb_ctrlrequest *cr;
+ unsigned char *buf;
+
+ BT_DBG("udev %p data %p", udev, data);
+
+ urb = usb_alloc_urb(0, flags);
+ if (!urb)
+ return NULL;
+
+ buf = kmalloc(size, flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return NULL;
+ }
+
+ switch (usb_pipetype(pipe)) {
+ case PIPE_CONTROL:
+ cr = kmalloc(sizeof(*cr), flags);
+ if (!cr) {
+ kfree(buf);
+ usb_free_urb(urb);
+ return NULL;
+ }
+
+ cr->bRequestType = USB_TYPE_VENDOR;
+ cr->bRequest = 0;
+ cr->wIndex = 0;
+ cr->wValue = 0;
+ cr->wLength = __cpu_to_le16(0);
+
+ usb_fill_control_urb(urb, udev, pipe, (void *) cr, buf, 0, bpa10x_complete, data);
+ break;
+
+ case PIPE_INTERRUPT:
+ usb_fill_int_urb(urb, udev, pipe, buf, size, bpa10x_complete, data, 1);
+ break;
+
+ case PIPE_BULK:
+ usb_fill_bulk_urb(urb, udev, pipe, buf, size, bpa10x_complete, data);
+ break;
+
+ default:
+ kfree(buf);
+ usb_free_urb(urb);
+ return NULL;
+ }
+
+ return urb;
+}
+
+static inline void bpa10x_free_urb(struct urb *urb)
+{
+ BT_DBG("urb %p", urb);
+
+ if (!urb)
+ return;
+
+ if (urb->setup_packet)
+ kfree(urb->setup_packet);
+
+ if (urb->transfer_buffer)
+ kfree(urb->transfer_buffer);
+
+ usb_free_urb(urb);
+}
+
+static int bpa10x_open(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hdev->driver_data;
+ struct usb_device *udev = data->udev;
+ unsigned long flags;
+ int err;
+
+ BT_DBG("hdev %p data %p", hdev, data);
+
+ if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
+ return 0;
+
+ data->cmd_urb = bpa10x_alloc_urb(udev, usb_sndctrlpipe(udev, BPA10X_CMD_EP),
+ BPA10X_CMD_BUF_SIZE, GFP_KERNEL, data);
+ if (!data->cmd_urb) {
+ err = -ENOMEM;
+ goto done;
+ }
+
+ data->evt_urb = bpa10x_alloc_urb(udev, usb_rcvintpipe(udev, BPA10X_EVT_EP),
+ BPA10X_EVT_BUF_SIZE, GFP_KERNEL, data);
+ if (!data->evt_urb) {
+ bpa10x_free_urb(data->cmd_urb);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ data->rx_urb = bpa10x_alloc_urb(udev, usb_rcvbulkpipe(udev, BPA10X_RX_EP),
+ BPA10X_RX_BUF_SIZE, GFP_KERNEL, data);
+ if (!data->rx_urb) {
+ bpa10x_free_urb(data->evt_urb);
+ bpa10x_free_urb(data->cmd_urb);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ data->tx_urb = bpa10x_alloc_urb(udev, usb_sndbulkpipe(udev, BPA10X_TX_EP),
+ BPA10X_TX_BUF_SIZE, GFP_KERNEL, data);
+ if (!data->rx_urb) {
+ bpa10x_free_urb(data->rx_urb);
+ bpa10x_free_urb(data->evt_urb);
+ bpa10x_free_urb(data->cmd_urb);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ write_lock_irqsave(&data->lock, flags);
+
+ err = usb_submit_urb(data->evt_urb, GFP_ATOMIC);
+ if (err < 0) {
+ BT_ERR("%s submit failed for event urb %p with error %d",
+ data->hdev->name, data->evt_urb, err);
+ } else {
+ err = usb_submit_urb(data->rx_urb, GFP_ATOMIC);
+ if (err < 0) {
+ BT_ERR("%s submit failed for rx urb %p with error %d",
+ data->hdev->name, data->evt_urb, err);
+ usb_kill_urb(data->evt_urb);
+ }
+ }
+
+ write_unlock_irqrestore(&data->lock, flags);
+
+done:
+ if (err < 0)
+ clear_bit(HCI_RUNNING, &hdev->flags);
+
+ return err;
+}
+
+static int bpa10x_close(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hdev->driver_data;
+ unsigned long flags;
+
+ BT_DBG("hdev %p data %p", hdev, data);
+
+ if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
+ return 0;
+
+ write_lock_irqsave(&data->lock, flags);
+
+ skb_queue_purge(&data->cmd_queue);
+ usb_kill_urb(data->cmd_urb);
+ usb_kill_urb(data->evt_urb);
+ usb_kill_urb(data->rx_urb);
+ usb_kill_urb(data->tx_urb);
+
+ write_unlock_irqrestore(&data->lock, flags);
+
+ bpa10x_free_urb(data->cmd_urb);
+ bpa10x_free_urb(data->evt_urb);
+ bpa10x_free_urb(data->rx_urb);
+ bpa10x_free_urb(data->tx_urb);
+
+ return 0;
+}
+
+static int bpa10x_flush(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hdev->driver_data;
+
+ BT_DBG("hdev %p data %p", hdev, data);
+
+ skb_queue_purge(&data->cmd_queue);
+
+ return 0;
+}
+
+static int bpa10x_send_frame(struct sk_buff *skb)
+{
+ struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+ struct bpa10x_data *data;
+
+ 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");
+ return -ENODEV;
+ }
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return -EBUSY;
+
+ data = hdev->driver_data;
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
+
+ switch (skb->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ skb_queue_tail(&data->cmd_queue, skb);
+ break;
+
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ skb_queue_tail(&data->tx_queue, skb);
+ break;
+
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ skb_queue_tail(&data->tx_queue, skb);
+ break;
+ };
+
+ read_lock(&data->lock);
+
+ bpa10x_wakeup(data);
+
+ read_unlock(&data->lock);
+
+ return 0;
+}
+
+static void bpa10x_destruct(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hdev->driver_data;
+
+ BT_DBG("hdev %p data %p", hdev, data);
+
+ kfree(data);
+}
+
+static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct hci_dev *hdev;
+ struct bpa10x_data *data;
+ int err;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (ignore)
+ return -ENODEV;
+
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ BT_ERR("Can't allocate data structure");
+ return -ENOMEM;
+ }
+
+ memset(data, 0, sizeof(*data));
+
+ data->udev = udev;
+
+ rwlock_init(&data->lock);
+
+ skb_queue_head_init(&data->cmd_queue);
+ skb_queue_head_init(&data->tx_queue);
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ data->hdev = hdev;
+
+ hdev->type = HCI_USB;
+ hdev->driver_data = data;
+ SET_HCIDEV_DEV(hdev, &intf->dev);
+
+ hdev->open = bpa10x_open;
+ hdev->close = bpa10x_close;
+ hdev->flush = bpa10x_flush;
+ hdev->send = bpa10x_send_frame;
+ hdev->destruct = bpa10x_destruct;
+
+ hdev->owner = THIS_MODULE;
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ BT_ERR("Can't register HCI device");
+ kfree(data);
+ 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);
+ struct hci_dev *hdev = data->hdev;
+
+ BT_DBG("intf %p", intf);
+
+ if (!hdev)
+ return;
+
+ usb_set_intfdata(intf, NULL);
+
+ if (hci_unregister_dev(hdev) < 0)
+ BT_ERR("Can't unregister HCI device %s", hdev->name);
+
+ hci_free_dev(hdev);
+}
+
+static struct usb_driver bpa10x_driver = {
+ .owner = THIS_MODULE,
+ .name = "bpa10x",
+ .probe = bpa10x_probe,
+ .disconnect = bpa10x_disconnect,
+ .id_table = bpa10x_table,
+};
+
+static int __init bpa10x_init(void)
+{
+ int err;
+
+ BT_INFO("Digianswer Bluetooth USB driver ver %s", VERSION);
+
+ err = usb_register(&bpa10x_driver);
+ if (err < 0)
+ BT_ERR("Failed to register USB driver");
+
+ return err;
+}
+
+static void __exit bpa10x_exit(void)
+{
+ usb_deregister(&bpa10x_driver);
+}
+
+module_init(bpa10x_init);
+module_exit(bpa10x_exit);
+
+module_param(ignore, bool, 0644);
+MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");