Lines Matching refs:dev
80 * @dev: the device structure
82 void mei_cancel_work(struct mei_device *dev)
84 cancel_work_sync(&dev->reset_work);
85 cancel_work_sync(&dev->bus_rescan_work);
87 cancel_delayed_work_sync(&dev->timer_work);
94 * @dev: the device structure
98 int mei_reset(struct mei_device *dev)
100 enum mei_dev_state state = dev->dev_state;
110 mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
111 dev_warn(dev->dev, "unexpected reset: dev_state = %s fw status = %s\n",
115 mei_clear_interrupts(dev);
122 mei_hbm_idle(dev);
126 mei_set_devstate(dev, MEI_DEV_RESETTING);
128 dev->reset_count++;
129 if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
130 dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
131 mei_set_devstate(dev, MEI_DEV_DISABLED);
135 ret = mei_hw_reset(dev, interrupts_enabled);
140 mei_cl_all_disconnect(dev);
142 mei_hbm_reset(dev);
144 memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr));
147 dev_err(dev->dev, "hw_reset failed ret = %d\n", ret);
152 dev_dbg(dev->dev, "powering down: end of reset\n");
153 mei_set_devstate(dev, MEI_DEV_DISABLED);
157 ret = mei_hw_start(dev);
159 dev_err(dev->dev, "hw_start failed ret = %d\n", ret);
163 dev_dbg(dev->dev, "link is established start sending messages.\n");
165 mei_set_devstate(dev, MEI_DEV_INIT_CLIENTS);
166 ret = mei_hbm_start_req(dev);
168 dev_err(dev->dev, "hbm_start failed ret = %d\n", ret);
169 mei_set_devstate(dev, MEI_DEV_RESETTING);
180 * @dev: the device structure
184 int mei_start(struct mei_device *dev)
188 mutex_lock(&dev->device_lock);
191 mei_clear_interrupts(dev);
193 ret = mei_hw_config(dev);
197 dev_dbg(dev->dev, "reset in start the mei device.\n");
199 dev->reset_count = 0;
201 mei_set_devstate(dev, MEI_DEV_INITIALIZING);
202 ret = mei_reset(dev);
204 if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
205 dev_err(dev->dev, "reset failed ret = %d", ret);
210 if (mei_hbm_start_wait(dev)) {
211 dev_err(dev->dev, "HBM haven't started");
215 if (!mei_host_is_ready(dev)) {
216 dev_err(dev->dev, "host is not ready.\n");
220 if (!mei_hw_is_ready(dev)) {
221 dev_err(dev->dev, "ME is not ready.\n");
225 if (!mei_hbm_version_is_supported(dev)) {
226 dev_dbg(dev->dev, "MEI start failed.\n");
230 dev_dbg(dev->dev, "link layer has been established.\n");
232 mutex_unlock(&dev->device_lock);
235 dev_err(dev->dev, "link layer initialization failed.\n");
236 mei_set_devstate(dev, MEI_DEV_DISABLED);
237 mutex_unlock(&dev->device_lock);
245 * @dev: the device structure
249 int mei_restart(struct mei_device *dev)
253 mutex_lock(&dev->device_lock);
255 mei_set_devstate(dev, MEI_DEV_POWER_UP);
256 dev->reset_count = 0;
258 err = mei_reset(dev);
260 mutex_unlock(&dev->device_lock);
262 if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
263 dev_err(dev->dev, "device disabled = %d\n", err);
269 schedule_work(&dev->reset_work);
278 struct mei_device *dev =
282 mei_clear_interrupts(dev);
283 mei_synchronize_irq(dev);
285 mutex_lock(&dev->device_lock);
287 ret = mei_reset(dev);
289 mutex_unlock(&dev->device_lock);
291 if (dev->dev_state == MEI_DEV_DISABLED) {
292 dev_err(dev->dev, "device disabled = %d\n", ret);
298 schedule_work(&dev->reset_work);
301 void mei_stop(struct mei_device *dev)
303 dev_dbg(dev->dev, "stopping the device.\n");
305 mutex_lock(&dev->device_lock);
306 mei_set_devstate(dev, MEI_DEV_POWER_DOWN);
307 mutex_unlock(&dev->device_lock);
308 mei_cl_bus_remove_devices(dev);
310 mei_cancel_work(dev);
312 mei_clear_interrupts(dev);
313 mei_synchronize_irq(dev);
315 mutex_lock(&dev->device_lock);
317 mei_reset(dev);
319 mei_set_devstate(dev, MEI_DEV_DISABLED);
321 mutex_unlock(&dev->device_lock);
328 * @dev: the device structure
332 bool mei_write_is_idle(struct mei_device *dev)
334 bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
335 list_empty(&dev->ctrl_wr_list) &&
336 list_empty(&dev->write_list) &&
337 list_empty(&dev->write_waiting_list));
339 dev_dbg(dev->dev, "write pg: is idle[%d] state=%s ctrl=%01d write=%01d wwait=%01d\n",
341 mei_dev_state_str(dev->dev_state),
342 list_empty(&dev->ctrl_wr_list),
343 list_empty(&dev->write_list),
344 list_empty(&dev->write_waiting_list));
353 * @dev: the mei device
357 void mei_device_init(struct mei_device *dev,
362 INIT_LIST_HEAD(&dev->file_list);
363 INIT_LIST_HEAD(&dev->device_list);
364 INIT_LIST_HEAD(&dev->me_clients);
365 mutex_init(&dev->device_lock);
366 init_rwsem(&dev->me_clients_rwsem);
367 mutex_init(&dev->cl_bus_lock);
368 init_waitqueue_head(&dev->wait_hw_ready);
369 init_waitqueue_head(&dev->wait_pg);
370 init_waitqueue_head(&dev->wait_hbm_start);
371 dev->dev_state = MEI_DEV_INITIALIZING;
372 dev->reset_count = 0;
374 INIT_LIST_HEAD(&dev->write_list);
375 INIT_LIST_HEAD(&dev->write_waiting_list);
376 INIT_LIST_HEAD(&dev->ctrl_wr_list);
377 INIT_LIST_HEAD(&dev->ctrl_rd_list);
378 dev->tx_queue_limit = MEI_TX_QUEUE_LIMIT_DEFAULT;
380 INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
381 INIT_WORK(&dev->reset_work, mei_reset_work);
382 INIT_WORK(&dev->bus_rescan_work, mei_cl_bus_rescan_work);
384 bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
385 dev->open_handle_count = 0;
391 bitmap_set(dev->host_clients_map, 0, 1);
393 dev->pg_event = MEI_PG_EVENT_IDLE;
394 dev->ops = hw_ops;
395 dev->dev = device;