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