-/*
+/*
HIDP implementation for Linux Bluetooth stack (BlueZ).
Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
- CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
- COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
SOFTWARE IS DISCLAIMED.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/poll.h>
+#include <linux/freezer.h>
#include <linux/fcntl.h>
#include <linux/skbuff.h>
#include <linux/socket.h>
#include <net/sock.h>
#include <linux/input.h>
+#include <linux/hid.h>
+#include <linux/hidraw.h>
#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include "hidp.h"
-#ifndef CONFIG_BT_HIDP_DEBUG
-#undef BT_DBG
-#define BT_DBG(D...)
-#endif
-
-#define VERSION "1.1"
+#define VERSION "1.2"
static DECLARE_RWSEM(hidp_session_sem);
static LIST_HEAD(hidp_session_list);
{
__module_get(THIS_MODULE);
list_add(&session->list, &hidp_session_list);
+
+ hci_conn_hold_device(session->conn);
}
static void __hidp_unlink_session(struct hidp_session *session)
{
+ hci_conn_put_device(session->conn);
+
list_del(&session->list);
module_put(THIS_MODULE);
}
else
strncpy(ci->name, "HID Boot Device", 128);
}
+
+ if (session->hid) {
+ ci->vendor = session->hid->vendor;
+ ci->product = session->hid->product;
+ ci->version = session->hid->version;
+ strncpy(ci->name, session->hid->name, 128);
+ }
}
-static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev,
+ unsigned int type, unsigned int code, int value)
{
- struct hidp_session *session = dev->private;
- struct sk_buff *skb;
unsigned char newleds;
+ struct sk_buff *skb;
- BT_DBG("input %p type %d code %d value %d", dev, type, code, value);
+ BT_DBG("session %p type %d code %d value %d", session, type, code, value);
if (type != EV_LED)
return -1;
return 0;
}
+static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+ struct hidp_session *session = hid->driver_data;
+
+ return hidp_queue_event(session, dev, type, code, value);
+}
+
+static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+ struct hidp_session *session = input_get_drvdata(dev);
+
+ return hidp_queue_event(session, dev, type, code, value);
+}
+
static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb)
{
struct input_dev *dev = session->input;
input_sync(dev);
}
-static void hidp_idle_timeout(unsigned long arg)
-{
- struct hidp_session *session = (struct hidp_session *) arg;
-
- atomic_inc(&session->terminate);
- hidp_schedule(session);
-}
-
-static inline void hidp_set_timer(struct hidp_session *session)
-{
- if (session->idle_to > 0)
- mod_timer(&session->timer, jiffies + HZ * session->idle_to);
-}
-
-static inline void hidp_del_timer(struct hidp_session *session)
-{
- if (session->idle_to > 0)
- del_timer(&session->timer);
-}
-
static int __hidp_send_ctrl_message(struct hidp_session *session,
unsigned char hdr, unsigned char *data, int size)
{
return 0;
}
-static int inline hidp_send_ctrl_message(struct hidp_session *session,
+static inline int hidp_send_ctrl_message(struct hidp_session *session,
unsigned char hdr, unsigned char *data, int size)
{
int err;
return err;
}
-static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param)
+static int hidp_queue_report(struct hidp_session *session,
+ unsigned char *data, int size)
+{
+ struct sk_buff *skb;
+
+ BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size);
+
+ if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) {
+ BT_ERR("Can't allocate memory for new frame");
+ return -ENOMEM;
+ }
+
+ *skb_put(skb, 1) = 0xa2;
+ if (size > 0)
+ memcpy(skb_put(skb, size), data, size);
+
+ skb_queue_tail(&session->intr_transmit, skb);
+
+ hidp_schedule(session);
+
+ return 0;
+}
+
+static int hidp_send_report(struct hidp_session *session, struct hid_report *report)
+{
+ unsigned char buf[32];
+ int rsize;
+
+ rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+ if (rsize > sizeof(buf))
+ return -EIO;
+
+ hid_output_report(report, buf);
+
+ return hidp_queue_report(session, buf, rsize);
+}
+
+static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count,
+ unsigned char report_type)
+{
+ switch (report_type) {
+ case HID_FEATURE_REPORT:
+ report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE;
+ break;
+ case HID_OUTPUT_REPORT:
+ report_type = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (hidp_send_ctrl_message(hid->driver_data, report_type,
+ data, count))
+ return -ENOMEM;
+ return count;
+}
+
+static void hidp_idle_timeout(unsigned long arg)
+{
+ struct hidp_session *session = (struct hidp_session *) arg;
+
+ atomic_inc(&session->terminate);
+ hidp_schedule(session);
+}
+
+static void hidp_set_timer(struct hidp_session *session)
+{
+ if (session->idle_to > 0)
+ mod_timer(&session->timer, jiffies + HZ * session->idle_to);
+}
+
+static inline void hidp_del_timer(struct hidp_session *session)
+{
+ if (session->idle_to > 0)
+ del_timer(&session->timer);
+}
+
+static void hidp_process_handshake(struct hidp_session *session,
+ unsigned char param)
{
BT_DBG("session %p param 0x%02x", session, param);
case HIDP_HSHK_ERR_FATAL:
/* Device requests a reboot, as this is the only way this error
- * can be recovered. */
+ * can be recovered. */
__hidp_send_ctrl_message(session,
HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0);
break;
}
}
-static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param)
+static void hidp_process_hid_control(struct hidp_session *session,
+ unsigned char param)
{
BT_DBG("session %p param 0x%02x", session, param);
- switch (param) {
- case HIDP_CTRL_NOP:
- break;
-
- case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG:
+ if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) {
/* Flush the transmit queues */
skb_queue_purge(&session->ctrl_transmit);
skb_queue_purge(&session->intr_transmit);
/* Kill session thread */
atomic_inc(&session->terminate);
- break;
-
- case HIDP_CTRL_HARD_RESET:
- case HIDP_CTRL_SOFT_RESET:
- case HIDP_CTRL_SUSPEND:
- case HIDP_CTRL_EXIT_SUSPEND:
- /* FIXME: We have to parse these and return no error */
- break;
-
- default:
- __hidp_send_ctrl_message(session,
- HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
- break;
+ hidp_schedule(session);
}
}
-static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param)
+static void hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
+ unsigned char param)
{
BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param);
if (session->input)
hidp_input_report(session, skb);
+
+ if (session->hid)
+ hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0);
+
break;
case HIDP_DATA_RTYPE_OTHER:
}
}
-static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb)
+static void hidp_recv_ctrl_frame(struct hidp_session *session,
+ struct sk_buff *skb)
{
unsigned char hdr, type, param;
kfree_skb(skb);
}
-static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb)
+static void hidp_recv_intr_frame(struct hidp_session *session,
+ struct sk_buff *skb)
{
unsigned char hdr;
if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
hidp_set_timer(session);
+
if (session->input)
hidp_input_report(session, skb);
+
+ if (session->hid) {
+ hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1);
+ BT_DBG("report len %d", skb->len);
+ }
} else {
BT_DBG("Unsupported protocol header 0x%02x", hdr);
}
product = session->input->id.product;
}
+ if (session->hid) {
+ vendor = session->hid->vendor;
+ product = session->hid->product;
+ }
+
daemonize("khidpd_%04x%04x", vendor, product);
set_user_nice(current, -15);
- current->flags |= PF_NOFREEZE;
init_waitqueue_entry(&ctrl_wait, current);
init_waitqueue_entry(&intr_wait, current);
- add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
- add_wait_queue(intr_sk->sk_sleep, &intr_wait);
+ add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait);
+ add_wait_queue(sk_sleep(intr_sk), &intr_wait);
while (!atomic_read(&session->terminate)) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(intr_sk->sk_sleep, &intr_wait);
- remove_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
+ remove_wait_queue(sk_sleep(intr_sk), &intr_wait);
+ remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait);
down_write(&hidp_session_sem);
hidp_del_timer(session);
- if (intr_sk->sk_state != BT_CONNECTED)
- wait_event_timeout(*(ctrl_sk->sk_sleep), (ctrl_sk->sk_state == BT_CLOSED), HZ);
+ if (session->input) {
+ input_unregister_device(session->input);
+ session->input = NULL;
+ }
- fput(session->ctrl_sock->file);
+ if (session->hid) {
+ hid_destroy_device(session->hid);
+ session->hid = NULL;
+ }
+
+ /* Wakeup user-space polling for socket errors */
+ session->intr_sock->sk->sk_err = EUNATCH;
+ session->ctrl_sock->sk->sk_err = EUNATCH;
- wait_event_timeout(*(intr_sk->sk_sleep), (intr_sk->sk_state == BT_CLOSED), HZ);
+ hidp_schedule(session);
fput(session->intr_sock->file);
- __hidp_unlink_session(session);
+ wait_event_timeout(*(sk_sleep(ctrl_sk)),
+ (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500));
- if (session->input) {
- input_unregister_device(session->input);
- session->input = NULL;
- }
+ fput(session->ctrl_sock->file);
+
+ __hidp_unlink_session(session);
up_write(&hidp_session_sem);
return 0;
}
-static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
+static struct device *hidp_get_device(struct hidp_session *session)
{
- struct input_dev *input = session->input;
- int i;
+ bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src;
+ bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst;
+ struct device *device = NULL;
+ struct hci_dev *hdev;
+
+ hdev = hci_get_route(dst, src);
+ if (!hdev)
+ return NULL;
+
+ session->conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
+ if (session->conn)
+ device = &session->conn->dev;
+
+ hci_dev_put(hdev);
+
+ return device;
+}
+
+static int hidp_setup_input(struct hidp_session *session,
+ struct hidp_connadd_req *req)
+{
+ struct input_dev *input;
+ int err, i;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ session->input = input;
- input->private = session;
+ input_set_drvdata(input, session);
input->name = "Bluetooth HID Boot Protocol Device";
}
if (req->subclass & 0x80) {
- input->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
- input->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
- input->relbit[0] = BIT(REL_X) | BIT(REL_Y);
- input->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
- input->relbit[0] |= BIT(REL_WHEEL);
+ input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+ input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
+ BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
+ input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+ input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |
+ BIT_MASK(BTN_EXTRA);
+ input->relbit[0] |= BIT_MASK(REL_WHEEL);
}
+ input->dev.parent = hidp_get_device(session);
+
input->event = hidp_input_event;
- input_register_device(input);
+ err = input_register_device(input);
+ if (err < 0) {
+ hci_conn_put_device(session->conn);
+ return err;
+ }
+
+ return 0;
+}
+
+static int hidp_open(struct hid_device *hid)
+{
+ return 0;
+}
+
+static void hidp_close(struct hid_device *hid)
+{
+}
+
+static int hidp_parse(struct hid_device *hid)
+{
+ struct hidp_session *session = hid->driver_data;
+
+ return hid_parse_report(session->hid, session->rd_data,
+ session->rd_size);
+}
+
+static int hidp_start(struct hid_device *hid)
+{
+ struct hidp_session *session = hid->driver_data;
+ struct hid_report *report;
+
+ list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].
+ report_list, list)
+ hidp_send_report(session, report);
+
+ list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].
+ report_list, list)
+ hidp_send_report(session, report);
+
+ return 0;
+}
+
+static void hidp_stop(struct hid_device *hid)
+{
+ struct hidp_session *session = hid->driver_data;
+
+ skb_queue_purge(&session->ctrl_transmit);
+ skb_queue_purge(&session->intr_transmit);
+
+ hid->claimed = 0;
+}
+
+static struct hid_ll_driver hidp_hid_driver = {
+ .parse = hidp_parse,
+ .start = hidp_start,
+ .stop = hidp_stop,
+ .open = hidp_open,
+ .close = hidp_close,
+ .hidinput_input_event = hidp_hidinput_event,
+};
+
+static int hidp_setup_hid(struct hidp_session *session,
+ struct hidp_connadd_req *req)
+{
+ struct hid_device *hid;
+ bdaddr_t src, dst;
+ int err;
+
+ session->rd_data = kzalloc(req->rd_size, GFP_KERNEL);
+ if (!session->rd_data)
+ return -ENOMEM;
+
+ if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) {
+ err = -EFAULT;
+ goto fault;
+ }
+ session->rd_size = req->rd_size;
+
+ hid = hid_allocate_device();
+ if (IS_ERR(hid)) {
+ err = PTR_ERR(hid);
+ goto fault;
+ }
+
+ session->hid = hid;
+
+ hid->driver_data = session;
+
+ baswap(&src, &bt_sk(session->ctrl_sock->sk)->src);
+ baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst);
+
+ hid->bus = BUS_BLUETOOTH;
+ hid->vendor = req->vendor;
+ hid->product = req->product;
+ hid->version = req->version;
+ hid->country = req->country;
+
+ strncpy(hid->name, req->name, 128);
+ strncpy(hid->phys, batostr(&src), 64);
+ strncpy(hid->uniq, batostr(&dst), 64);
+
+ hid->dev.parent = hidp_get_device(session);
+ hid->ll_driver = &hidp_hid_driver;
+
+ hid->hid_output_raw_report = hidp_output_raw_report;
+
+ err = hid_add_device(hid);
+ if (err < 0)
+ goto failed;
+
+ return 0;
+
+failed:
+ hid_destroy_device(hid);
+ session->hid = NULL;
+
+fault:
+ kfree(session->rd_data);
+ session->rd_data = NULL;
+
+ return err;
}
int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock)
bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst))
return -ENOTUNIQ;
- session = kmalloc(sizeof(struct hidp_session), GFP_KERNEL);
+ session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL);
if (!session)
return -ENOMEM;
- memset(session, 0, sizeof(struct hidp_session));
- session->input = input_allocate_device();
- if (!session->input) {
- kfree(session);
- return -ENOMEM;
- }
+ BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size);
down_write(&hidp_session_sem);
session->intr_sock = intr_sock;
session->state = BT_CONNECTED;
- init_timer(&session->timer);
-
- session->timer.function = hidp_idle_timeout;
- session->timer.data = (unsigned long) session;
+ setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session);
skb_queue_head_init(&session->ctrl_transmit);
skb_queue_head_init(&session->intr_transmit);
session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
session->idle_to = req->idle_to;
- if (session->input)
- hidp_setup_input(session, req);
+ if (req->rd_size > 0) {
+ err = hidp_setup_hid(session, req);
+ if (err && err != -ENODEV)
+ goto purge;
+ }
+
+ if (!session->hid) {
+ err = hidp_setup_input(session, req);
+ if (err < 0)
+ goto purge;
+ }
__hidp_link_session(session);
if (session->input) {
input_unregister_device(session->input);
- session->input = NULL; /* don't try to free it here */
+ session->input = NULL;
}
+ if (session->hid) {
+ hid_destroy_device(session->hid);
+ session->hid = NULL;
+ }
+
+ kfree(session->rd_data);
+ session->rd_data = NULL;
+
+purge:
+ skb_queue_purge(&session->ctrl_transmit);
+ skb_queue_purge(&session->intr_transmit);
+
failed:
up_write(&hidp_session_sem);
- kfree(session->input);
+ input_free_device(session->input);
kfree(session);
return err;
}
skb_queue_purge(&session->ctrl_transmit);
skb_queue_purge(&session->intr_transmit);
+ /* Wakeup user-space polling for socket errors */
+ session->intr_sock->sk->sk_err = EUNATCH;
+ session->ctrl_sock->sk->sk_err = EUNATCH;
+
/* Kill session thread */
atomic_inc(&session->terminate);
hidp_schedule(session);
return err;
}
+static const struct hid_device_id hidp_table[] = {
+ { HID_BLUETOOTH_DEVICE(HID_ANY_ID, HID_ANY_ID) },
+ { }
+};
+
+static struct hid_driver hidp_driver = {
+ .name = "generic-bluetooth",
+ .id_table = hidp_table,
+};
+
static int __init hidp_init(void)
{
+ int ret;
+
l2cap_load();
BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION);
- return hidp_init_sockets();
+ ret = hid_register_driver(&hidp_driver);
+ if (ret)
+ goto err;
+
+ ret = hidp_init_sockets();
+ if (ret)
+ goto err_drv;
+
+ return 0;
+err_drv:
+ hid_unregister_driver(&hidp_driver);
+err:
+ return ret;
}
static void __exit hidp_exit(void)
{
hidp_cleanup_sockets();
+ hid_unregister_driver(&hidp_driver);
}
module_init(hidp_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff