}
}
+struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 event)
+{
+ struct hci_ev_cmd_complete *ev;
+ struct hci_event_hdr *hdr;
+ struct sk_buff *skb;
+
+ hci_dev_lock(hdev);
+
+ skb = hdev->recv_evt;
+ hdev->recv_evt = NULL;
+
+ hci_dev_unlock(hdev);
+
+ if (!skb)
+ return ERR_PTR(-ENODATA);
+
+ if (skb->len < sizeof(*hdr)) {
+ BT_ERR("Too short HCI event");
+ goto failed;
+ }
+
+ hdr = (void *) skb->data;
+ skb_pull(skb, HCI_EVENT_HDR_SIZE);
+
+ if (event) {
+ if (hdr->evt != event)
+ goto failed;
+ return skb;
+ }
+
+ if (hdr->evt != HCI_EV_CMD_COMPLETE) {
+ BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
+ goto failed;
+ }
+
+ if (skb->len < sizeof(*ev)) {
+ BT_ERR("Too short cmd_complete event");
+ goto failed;
+ }
+
+ ev = (void *) skb->data;
+ skb_pull(skb, sizeof(*ev));
+
+ if (opcode == __le16_to_cpu(ev->opcode))
+ return skb;
+
+ BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
+ __le16_to_cpu(ev->opcode));
+
+failed:
+ kfree_skb(skb);
+ return ERR_PTR(-ENODATA);
+}
+
+struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
+ void *param, u8 event, u32 timeout)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct hci_request req;
+ int err = 0;
+
+ BT_DBG("%s", hdev->name);
+
+ hci_req_init(&req, hdev);
+
+ hci_req_add_ev(&req, opcode, plen, param, event);
+
+ hdev->req_status = HCI_REQ_PEND;
+
+ err = hci_req_run(&req, hci_req_sync_complete);
+ if (err < 0)
+ return ERR_PTR(err);
+
+ add_wait_queue(&hdev->req_wait_q, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ schedule_timeout(timeout);
+
+ remove_wait_queue(&hdev->req_wait_q, &wait);
+
+ if (signal_pending(current))
+ return ERR_PTR(-EINTR);
+
+ switch (hdev->req_status) {
+ case HCI_REQ_DONE:
+ err = -bt_to_errno(hdev->req_result);
+ break;
+
+ case HCI_REQ_CANCELED:
+ err = -hdev->req_result;
+ break;
+
+ default:
+ err = -ETIMEDOUT;
+ break;
+ }
+
+ hdev->req_status = hdev->req_result = 0;
+
+ BT_DBG("%s end: err %d", hdev->name, err);
+
+ if (err < 0)
+ return ERR_PTR(err);
+
+ return hci_get_cmd_complete(hdev, opcode, event);
+}
+EXPORT_SYMBOL(__hci_cmd_sync_ev);
+
+struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
+ void *param, u32 timeout)
+{
+ return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout);
+}
+EXPORT_SYMBOL(__hci_cmd_sync);
+
/* Execute request and wait for completion. */
static int __hci_req_sync(struct hci_dev *hdev,
void (*func)(struct hci_request *req,
err = hci_req_run(&req, hci_req_sync_complete);
if (err < 0) {
hdev->req_status = 0;
- /* req_run will fail if the request did not add any
- * commands to the queue, something that can happen when
- * a request with conditionals doesn't trigger any
- * commands to be sent. This is normal behavior and
- * should not trigger an error return.
+
+ /* ENODATA means the HCI request command queue is empty.
+ * This can happen when a request with conditionals doesn't
+ * trigger any commands to be sent. This is normal behavior
+ * and should not trigger an error return.
*/
- return 0;
+ if (err == -ENODATA)
+ return 0;
+
+ return err;
}
add_wait_queue(&hdev->req_wait_q, &wait);
static void hci_init1_req(struct hci_request *req, unsigned long opt)
{
struct hci_dev *hdev = req->hdev;
- struct hci_request init_req;
- struct sk_buff *skb;
BT_DBG("%s %ld", hdev->name, opt);
- /* Driver initialization */
-
- hci_req_init(&init_req, hdev);
-
- /* Special commands */
- while ((skb = skb_dequeue(&hdev->driver_init))) {
- bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
- skb->dev = (void *) hdev;
-
- if (skb_queue_empty(&init_req.cmd_q))
- bt_cb(skb)->req.start = true;
-
- skb_queue_tail(&init_req.cmd_q, skb);
- }
- skb_queue_purge(&hdev->driver_init);
-
- hci_req_run(&init_req, NULL);
-
/* Reset */
if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks))
hci_reset_req(req, 0);
bacpy(&cp.bdaddr, BDADDR_ANY);
cp.delete_all = 0x01;
hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp);
+
+ /* Read page scan parameters */
+ if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) {
+ hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL);
+ }
}
static void le_setup(struct hci_request *req)
static void hci_init3_req(struct hci_request *req, unsigned long opt)
{
struct hci_dev *hdev = req->hdev;
+ u8 p;
if (hdev->commands[5] & 0x10)
hci_setup_link_policy(req);
- if (lmp_le_capable(hdev))
+ if (lmp_le_capable(hdev)) {
hci_set_le_support(req);
+ hci_update_ad(req);
+ }
+
+ /* Read features beyond page 1 if available */
+ for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
+ struct hci_cp_read_local_ext_features cp;
+
+ cp.page = p;
+ hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES,
+ sizeof(cp), &cp);
+ }
}
static int __hci_init(struct hci_dev *hdev)
hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
}
+static int wait_inquiry(void *word)
+{
+ schedule();
+ return signal_pending(current);
+}
+
int hci_inquiry(void __user *arg)
{
__u8 __user *ptr = arg;
timeo);
if (err < 0)
goto done;
+
+ /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
+ * cleared). If it is interrupted by a signal, return -EINTR.
+ */
+ if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry,
+ TASK_INTERRUPTIBLE))
+ return -EINTR;
}
/* for unlimited number of responses we will use buffer with
return ad_len;
}
-int hci_update_ad(struct hci_dev *hdev)
+void hci_update_ad(struct hci_request *req)
{
+ struct hci_dev *hdev = req->hdev;
struct hci_cp_le_set_adv_data cp;
u8 len;
- int err;
- hci_dev_lock(hdev);
-
- if (!lmp_le_capable(hdev)) {
- err = -EINVAL;
- goto unlock;
- }
+ if (!lmp_le_capable(hdev))
+ return;
memset(&cp, 0, sizeof(cp));
len = create_ad(hdev, cp.data);
if (hdev->adv_data_len == len &&
- memcmp(cp.data, hdev->adv_data, len) == 0) {
- err = 0;
- goto unlock;
- }
+ memcmp(cp.data, hdev->adv_data, len) == 0)
+ return;
memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
hdev->adv_data_len = len;
cp.length = len;
- err = hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
-
-unlock:
- hci_dev_unlock(hdev);
- return err;
+ hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
}
/* ---- HCI ioctl helpers ---- */
goto done;
}
- if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
- set_bit(HCI_RAW, &hdev->flags);
-
- /* Treat all non BR/EDR controllers as raw devices if
- enable_hs is not set */
- if (hdev->dev_type != HCI_BREDR && !enable_hs)
- set_bit(HCI_RAW, &hdev->flags);
-
if (hdev->open(hdev)) {
ret = -EIO;
goto done;
}
- if (!test_bit(HCI_RAW, &hdev->flags)) {
- atomic_set(&hdev->cmd_cnt, 1);
- set_bit(HCI_INIT, &hdev->flags);
- ret = __hci_init(hdev);
- clear_bit(HCI_INIT, &hdev->flags);
+ atomic_set(&hdev->cmd_cnt, 1);
+ set_bit(HCI_INIT, &hdev->flags);
+
+ if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags))
+ ret = hdev->setup(hdev);
+
+ if (!ret) {
+ /* Treat all non BR/EDR controllers as raw devices if
+ * enable_hs is not set.
+ */
+ if (hdev->dev_type != HCI_BREDR && !enable_hs)
+ set_bit(HCI_RAW, &hdev->flags);
+
+ if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+ set_bit(HCI_RAW, &hdev->flags);
+
+ if (!test_bit(HCI_RAW, &hdev->flags))
+ ret = __hci_init(hdev);
}
+ clear_bit(HCI_INIT, &hdev->flags);
+
if (!ret) {
hci_dev_hold(hdev);
set_bit(HCI_UP, &hdev->flags);
hci_notify(hdev, HCI_DEV_UP);
- hci_update_ad(hdev);
if (!test_bit(HCI_SETUP, &hdev->dev_flags) &&
mgmt_valid_hdev(hdev)) {
hci_dev_lock(hdev);
hdev->sent_cmd = NULL;
}
+ kfree_skb(hdev->recv_evt);
+ hdev->recv_evt = NULL;
+
/* After this point our queues are empty
* and no tasks are scheduled. */
hdev->close(hdev);
+ /* Clear flags */
+ hdev->flags = 0;
+ hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
+
if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) &&
mgmt_valid_hdev(hdev)) {
hci_dev_lock(hdev);
hci_dev_unlock(hdev);
}
- /* Clear flags */
- hdev->flags = 0;
-
/* Controller radio is available but is currently powered down */
hdev->amp_status = 0;
struct hci_cp_le_set_scan_enable cp;
memset(&cp, 0, sizeof(cp));
- cp.enable = 1;
- cp.filter_dup = 1;
+ cp.enable = LE_SCAN_ENABLE;
+ cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
}
return err;
queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
- msecs_to_jiffies(timeout));
+ timeout);
return 0;
}
INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work);
- skb_queue_head_init(&hdev->driver_init);
skb_queue_head_init(&hdev->rx_q);
skb_queue_head_init(&hdev->cmd_q);
skb_queue_head_init(&hdev->raw_q);
/* Free HCI device */
void hci_free_dev(struct hci_dev *hdev)
{
- skb_queue_purge(&hdev->driver_init);
-
/* will free via device release */
put_device(&hdev->dev);
}
{
skb_queue_head_init(&req->cmd_q);
req->hdev = hdev;
+ req->err = 0;
}
int hci_req_run(struct hci_request *req, hci_req_complete_t complete)
BT_DBG("length %u", skb_queue_len(&req->cmd_q));
+ /* If an error occured during request building, remove all HCI
+ * commands queued on the HCI request queue.
+ */
+ if (req->err) {
+ skb_queue_purge(&req->cmd_q);
+ return req->err;
+ }
+
/* Do not allow empty requests */
if (skb_queue_empty(&req->cmd_q))
return -ENODATA;
}
/* Queue a command to an asynchronous HCI request */
-int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, void *param,
+ u8 event)
{
struct hci_dev *hdev = req->hdev;
struct sk_buff *skb;
BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen);
+ /* If an error occured during request building, there is no point in
+ * queueing the HCI command. We can simply return.
+ */
+ if (req->err)
+ return;
+
skb = hci_prepare_cmd(hdev, opcode, plen, param);
if (!skb) {
- BT_ERR("%s no memory for command", hdev->name);
- return -ENOMEM;
+ BT_ERR("%s no memory for command (opcode 0x%4.4x)",
+ hdev->name, opcode);
+ req->err = -ENOMEM;
+ return;
}
if (skb_queue_empty(&req->cmd_q))
bt_cb(skb)->req.start = true;
+ bt_cb(skb)->req.event = event;
+
skb_queue_tail(&req->cmd_q, skb);
+}
- return 0;
+void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+{
+ hci_req_add_ev(req, opcode, plen, param, 0);
}
/* Get data from the previously sent command */
req_complete(hdev, status);
}
-void hci_req_cmd_status(struct hci_dev *hdev, u16 opcode, u8 status)
-{
- hci_req_complete_t req_complete = NULL;
-
- BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
-
- if (status) {
- hci_req_cmd_complete(hdev, opcode, status);
- return;
- }
-
- /* No need to handle success status if there are more commands */
- if (!hci_req_is_complete(hdev))
- return;
-
- if (hdev->sent_cmd)
- req_complete = bt_cb(hdev->sent_cmd)->req.complete;
-
- /* If the request doesn't have a complete callback or there
- * are other commands/requests in the hdev queue we consider
- * this request as completed.
- */
- if (!req_complete || !skb_queue_empty(&hdev->cmd_q))
- hci_req_cmd_complete(hdev, opcode, status);
-}
-
static void hci_rx_work(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff