70 	struct switchtec_user *stuser;  in stuser_create()  local
72 	stuser = kzalloc(sizeof(*stuser), GFP_KERNEL);  in stuser_create()
73 	if (!stuser)  in stuser_create()
77 	stuser->stdev = stdev;  in stuser_create()
78 	kref_init(&stuser->kref);  in stuser_create()
79 	INIT_LIST_HEAD(&stuser->list);  in stuser_create()
80 	init_completion(&stuser->comp);  in stuser_create()
81 	stuser->event_cnt = atomic_read(&stdev->event_cnt);  in stuser_create()
83 	dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);  in stuser_create()
85 	return stuser;  in stuser_create()
90 	struct switchtec_user *stuser;  in stuser_free()  local
92 	stuser = container_of(kref, struct switchtec_user, kref);  in stuser_free()
94 	dev_dbg(&stuser->stdev->dev, "%s: %p\n", __func__, stuser);  in stuser_free()
96 	put_device(&stuser->stdev->dev);  in stuser_free()
97 	kfree(stuser);  in stuser_free()
100 static void stuser_put(struct switchtec_user *stuser)  in stuser_put()  argument
102 	kref_put(&stuser->kref, stuser_free);  in stuser_put()
105 static void stuser_set_state(struct switchtec_user *stuser,  in stuser_set_state()  argument
117 	stuser->state = state;  in stuser_set_state()
119 	dev_dbg(&stuser->stdev->dev, "stuser state %p -> %s",  in stuser_set_state()
120 		stuser, state_names[state]);  in stuser_set_state()
142 	struct switchtec_user *stuser;  in mrpc_cmd_submit()  local
150 	stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,  in mrpc_cmd_submit()
158 	stuser_set_state(stuser, MRPC_RUNNING);  in mrpc_cmd_submit()
161 		    stuser->data, stuser->data_len);  in mrpc_cmd_submit()
163 	iowrite32(stuser->cmd, &stdev->mmio_mrpc->cmd);  in mrpc_cmd_submit()
169 static int mrpc_queue_cmd(struct switchtec_user *stuser)  in mrpc_queue_cmd()  argument
173 	struct switchtec_dev *stdev = stuser->stdev;  in mrpc_queue_cmd()
175 	kref_get(&stuser->kref);  in mrpc_queue_cmd()
176 	stuser->read_len = sizeof(stuser->data);  in mrpc_queue_cmd()
177 	stuser_set_state(stuser, MRPC_QUEUED);  in mrpc_queue_cmd()
178 	init_completion(&stuser->comp);  in mrpc_queue_cmd()
179 	list_add_tail(&stuser->list, &stdev->mrpc_queue);  in mrpc_queue_cmd()
189 	struct switchtec_user *stuser;  in mrpc_complete_cmd()  local
194 	stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,  in mrpc_complete_cmd()
198 		stuser->status = stdev->dma_mrpc->status;  in mrpc_complete_cmd()
200 		stuser->status = ioread32(&stdev->mmio_mrpc->status);  in mrpc_complete_cmd()
202 	if (stuser->status == SWITCHTEC_MRPC_STATUS_INPROGRESS)  in mrpc_complete_cmd()
205 	stuser_set_state(stuser, MRPC_DONE);  in mrpc_complete_cmd()
206 	stuser->return_code = 0;  in mrpc_complete_cmd()
208 	if (stuser->status != SWITCHTEC_MRPC_STATUS_DONE)  in mrpc_complete_cmd()
212 		stuser->return_code = stdev->dma_mrpc->rtn_code;  in mrpc_complete_cmd()
214 		stuser->return_code = ioread32(&stdev->mmio_mrpc->ret_value);  in mrpc_complete_cmd()
215 	if (stuser->return_code != 0)  in mrpc_complete_cmd()
219 		memcpy(stuser->data, &stdev->dma_mrpc->data,  in mrpc_complete_cmd()
220 			      stuser->read_len);  in mrpc_complete_cmd()
222 		memcpy_fromio(stuser->data, &stdev->mmio_mrpc->output_data,  in mrpc_complete_cmd()
223 			      stuser->read_len);  in mrpc_complete_cmd()
225 	complete_all(&stuser->comp);  in mrpc_complete_cmd()
226 	list_del_init(&stuser->list);  in mrpc_complete_cmd()
227 	stuser_put(stuser);  in mrpc_complete_cmd()
388 	struct switchtec_user *stuser;  in switchtec_dev_open()  local
392 	stuser = stuser_create(stdev);  in switchtec_dev_open()
393 	if (IS_ERR(stuser))  in switchtec_dev_open()
394 		return PTR_ERR(stuser);  in switchtec_dev_open()
396 	filp->private_data = stuser;  in switchtec_dev_open()
399 	dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);  in switchtec_dev_open()
406 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_release()  local
408 	stuser_put(stuser);  in switchtec_dev_release()
429 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_write()  local
430 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_write()
433 	if (size < sizeof(stuser->cmd) ||  in switchtec_dev_write()
434 	    size > sizeof(stuser->cmd) + sizeof(stuser->data))  in switchtec_dev_write()
437 	stuser->data_len = size - sizeof(stuser->cmd);  in switchtec_dev_write()
443 	if (stuser->state != MRPC_IDLE) {  in switchtec_dev_write()
448 	rc = copy_from_user(&stuser->cmd, data, sizeof(stuser->cmd));  in switchtec_dev_write()
454 	data += sizeof(stuser->cmd);  in switchtec_dev_write()
455 	rc = copy_from_user(&stuser->data, data, size - sizeof(stuser->cmd));  in switchtec_dev_write()
461 	rc = mrpc_queue_cmd(stuser);  in switchtec_dev_write()
475 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_read()  local
476 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_read()
479 	if (size < sizeof(stuser->cmd) ||  in switchtec_dev_read()
480 	    size > sizeof(stuser->cmd) + sizeof(stuser->data))  in switchtec_dev_read()
487 	if (stuser->state == MRPC_IDLE) {  in switchtec_dev_read()
492 	stuser->read_len = size - sizeof(stuser->return_code);  in switchtec_dev_read()
497 		if (!try_wait_for_completion(&stuser->comp))  in switchtec_dev_read()
500 		rc = wait_for_completion_interruptible(&stuser->comp);  in switchtec_dev_read()
509 	if (stuser->state != MRPC_DONE) {  in switchtec_dev_read()
514 	rc = copy_to_user(data, &stuser->return_code,  in switchtec_dev_read()
515 			  sizeof(stuser->return_code));  in switchtec_dev_read()
521 	data += sizeof(stuser->return_code);  in switchtec_dev_read()
522 	rc = copy_to_user(data, &stuser->data,  in switchtec_dev_read()
523 			  size - sizeof(stuser->return_code));  in switchtec_dev_read()
529 	stuser_set_state(stuser, MRPC_IDLE);  in switchtec_dev_read()
534 	if (stuser->status == SWITCHTEC_MRPC_STATUS_DONE)  in switchtec_dev_read()
536 	else if (stuser->status == SWITCHTEC_MRPC_STATUS_INTERRUPTED)  in switchtec_dev_read()
544 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_poll()  local
545 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_poll()
548 	poll_wait(filp, &stuser->comp.wait, wait);  in switchtec_dev_poll()
556 	if (try_wait_for_completion(&stuser->comp))  in switchtec_dev_poll()
559 	if (stuser->event_cnt != atomic_read(&stdev->event_cnt))  in switchtec_dev_poll()
664 	struct switchtec_user *stuser,  in ioctl_event_summary()  argument
700 	stuser->event_cnt = atomic_read(&stdev->event_cnt);  in ioctl_event_summary()
978 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_ioctl()  local
979 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_ioctl()
995 		rc = ioctl_event_summary(stdev, stuser, argp,  in switchtec_dev_ioctl()
1008 		rc = ioctl_event_summary(stdev, stuser, argp,  in switchtec_dev_ioctl()
1097 	struct switchtec_user *stuser, *tmpuser;  in stdev_kill()  local
1108 	list_for_each_entry_safe(stuser, tmpuser, &stdev->mrpc_queue, list) {  in stdev_kill()
1109 		complete_all(&stuser->comp);  in stdev_kill()
1110 		list_del_init(&stuser->list);  in stdev_kill()
1111 		stuser_put(stuser);  in stdev_kill()