Lines Matching refs:dev
81 * @dev: the device structure
83 void mei_cancel_work(struct mei_device *dev)
85 cancel_work_sync(&dev->reset_work);
86 cancel_work_sync(&dev->bus_rescan_work);
88 cancel_delayed_work_sync(&dev->timer_work);
95 * @dev: the device structure
99 int mei_reset(struct mei_device *dev)
101 enum mei_dev_state state = dev->dev_state;
111 mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
112 dev_warn(dev->dev, "unexpected reset: dev_state = %s fw status = %s\n",
116 mei_clear_interrupts(dev);
123 mei_hbm_idle(dev);
127 mei_set_devstate(dev, MEI_DEV_RESETTING);
129 dev->reset_count++;
130 if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
131 dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
132 mei_set_devstate(dev, MEI_DEV_DISABLED);
136 ret = mei_hw_reset(dev, interrupts_enabled);
141 mei_cl_all_disconnect(dev);
143 mei_hbm_reset(dev);
146 dev->fw_ver_received = 0;
148 memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr));
151 dev_err(dev->dev, "hw_reset failed ret = %d\n", ret);
156 dev_dbg(dev->dev, "powering down: end of reset\n");
157 mei_set_devstate(dev, MEI_DEV_DISABLED);
161 ret = mei_hw_start(dev);
165 mei_fw_status_str(dev, fw_sts_str, MEI_FW_STATUS_STR_SZ);
166 dev_err(dev->dev, "hw_start failed ret = %d fw status = %s\n", ret, fw_sts_str);
170 if (dev->dev_state != MEI_DEV_RESETTING) {
171 dev_dbg(dev->dev, "wrong state = %d on link start\n", dev->dev_state);
175 dev_dbg(dev->dev, "link is established start sending messages.\n");
177 mei_set_devstate(dev, MEI_DEV_INIT_CLIENTS);
178 ret = mei_hbm_start_req(dev);
180 dev_err(dev->dev, "hbm_start failed ret = %d\n", ret);
181 mei_set_devstate(dev, MEI_DEV_RESETTING);
192 * @dev: the device structure
196 int mei_start(struct mei_device *dev)
200 mutex_lock(&dev->device_lock);
203 mei_clear_interrupts(dev);
205 ret = mei_hw_config(dev);
209 dev_dbg(dev->dev, "reset in start the mei device.\n");
211 dev->reset_count = 0;
213 mei_set_devstate(dev, MEI_DEV_INITIALIZING);
214 ret = mei_reset(dev);
216 if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
217 dev_err(dev->dev, "reset failed ret = %d", ret);
222 if (mei_hbm_start_wait(dev)) {
223 dev_err(dev->dev, "HBM haven't started");
227 if (!mei_hbm_version_is_supported(dev)) {
228 dev_dbg(dev->dev, "MEI start failed.\n");
232 dev_dbg(dev->dev, "link layer has been established.\n");
234 mutex_unlock(&dev->device_lock);
237 dev_err(dev->dev, "link layer initialization failed.\n");
238 mei_set_devstate(dev, MEI_DEV_DISABLED);
239 mutex_unlock(&dev->device_lock);
247 * @dev: the device structure
251 int mei_restart(struct mei_device *dev)
255 mutex_lock(&dev->device_lock);
257 mei_set_devstate(dev, MEI_DEV_POWER_UP);
258 dev->reset_count = 0;
260 err = mei_reset(dev);
262 mutex_unlock(&dev->device_lock);
264 if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
265 dev_err(dev->dev, "device disabled = %d\n", err);
271 schedule_work(&dev->reset_work);
280 struct mei_device *dev =
284 mei_clear_interrupts(dev);
285 mei_synchronize_irq(dev);
287 mutex_lock(&dev->device_lock);
289 ret = mei_reset(dev);
291 mutex_unlock(&dev->device_lock);
293 if (dev->dev_state == MEI_DEV_DISABLED) {
294 dev_err(dev->dev, "device disabled = %d\n", ret);
300 schedule_work(&dev->reset_work);
303 void mei_stop(struct mei_device *dev)
305 dev_dbg(dev->dev, "stopping the device.\n");
307 mutex_lock(&dev->device_lock);
308 mei_set_devstate(dev, MEI_DEV_POWERING_DOWN);
309 mutex_unlock(&dev->device_lock);
310 mei_cl_bus_remove_devices(dev);
311 mutex_lock(&dev->device_lock);
312 mei_set_devstate(dev, MEI_DEV_POWER_DOWN);
313 mutex_unlock(&dev->device_lock);
315 mei_cancel_work(dev);
317 mei_clear_interrupts(dev);
318 mei_synchronize_irq(dev);
320 mei_cancel_work(dev);
322 mutex_lock(&dev->device_lock);
324 mei_reset(dev);
326 mei_set_devstate(dev, MEI_DEV_DISABLED);
328 mutex_unlock(&dev->device_lock);
335 * @dev: the device structure
339 bool mei_write_is_idle(struct mei_device *dev)
341 bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
342 list_empty(&dev->ctrl_wr_list) &&
343 list_empty(&dev->write_list) &&
344 list_empty(&dev->write_waiting_list));
346 dev_dbg(dev->dev, "write pg: is idle[%d] state=%s ctrl=%01d write=%01d wwait=%01d\n",
348 mei_dev_state_str(dev->dev_state),
349 list_empty(&dev->ctrl_wr_list),
350 list_empty(&dev->write_list),
351 list_empty(&dev->write_waiting_list));
360 * @dev: the mei device
365 void mei_device_init(struct mei_device *dev,
371 INIT_LIST_HEAD(&dev->file_list);
372 INIT_LIST_HEAD(&dev->device_list);
373 INIT_LIST_HEAD(&dev->me_clients);
374 mutex_init(&dev->device_lock);
375 init_rwsem(&dev->me_clients_rwsem);
376 mutex_init(&dev->cl_bus_lock);
377 init_waitqueue_head(&dev->wait_hw_ready);
378 init_waitqueue_head(&dev->wait_pg);
379 init_waitqueue_head(&dev->wait_hbm_start);
380 dev->dev_state = MEI_DEV_INITIALIZING;
381 dev->reset_count = 0;
383 INIT_LIST_HEAD(&dev->write_list);
384 INIT_LIST_HEAD(&dev->write_waiting_list);
385 INIT_LIST_HEAD(&dev->ctrl_wr_list);
386 INIT_LIST_HEAD(&dev->ctrl_rd_list);
387 dev->tx_queue_limit = MEI_TX_QUEUE_LIMIT_DEFAULT;
389 INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
390 INIT_WORK(&dev->reset_work, mei_reset_work);
391 INIT_WORK(&dev->bus_rescan_work, mei_cl_bus_rescan_work);
393 bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
394 dev->open_handle_count = 0;
396 dev->pxp_mode = MEI_DEV_PXP_DEFAULT;
402 bitmap_set(dev->host_clients_map, 0, 1);
404 dev->pg_event = MEI_PG_EVENT_IDLE;
405 dev->ops = hw_ops;
406 dev->dev = device;
408 dev->timeouts.hw_ready = mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT);
409 dev->timeouts.connect = MEI_CONNECT_TIMEOUT;
410 dev->timeouts.client_init = MEI_CLIENTS_INIT_TIMEOUT;
411 dev->timeouts.pgi = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
412 dev->timeouts.d0i3 = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT);
414 dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT_SLOW);
415 dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT_SLOW);
416 dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT_SLOW);
418 dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT);
419 dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT);
420 dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT);