71 	struct switchtec_user *stuser;  in stuser_create()  local
73 	stuser = kzalloc(sizeof(*stuser), GFP_KERNEL);  in stuser_create()
74 	if (!stuser)  in stuser_create()
78 	stuser->stdev = stdev;  in stuser_create()
79 	kref_init(&stuser->kref);  in stuser_create()
80 	INIT_LIST_HEAD(&stuser->list);  in stuser_create()
81 	init_waitqueue_head(&stuser->cmd_comp);  in stuser_create()
82 	stuser->event_cnt = atomic_read(&stdev->event_cnt);  in stuser_create()
84 	dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);  in stuser_create()
86 	return stuser;  in stuser_create()
91 	struct switchtec_user *stuser;  in stuser_free()  local
93 	stuser = container_of(kref, struct switchtec_user, kref);  in stuser_free()
95 	dev_dbg(&stuser->stdev->dev, "%s: %p\n", __func__, stuser);  in stuser_free()
97 	put_device(&stuser->stdev->dev);  in stuser_free()
98 	kfree(stuser);  in stuser_free()
101 static void stuser_put(struct switchtec_user *stuser)  in stuser_put()  argument
103 	kref_put(&stuser->kref, stuser_free);  in stuser_put()
106 static void stuser_set_state(struct switchtec_user *stuser,  in stuser_set_state()  argument
118 	stuser->state = state;  in stuser_set_state()
120 	dev_dbg(&stuser->stdev->dev, "stuser state %p -> %s",  in stuser_set_state()
121 		stuser, state_names[state]);  in stuser_set_state()
143 	struct switchtec_user *stuser;  in mrpc_cmd_submit()  local
151 	stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,  in mrpc_cmd_submit()
159 	stuser_set_state(stuser, MRPC_RUNNING);  in mrpc_cmd_submit()
162 		    stuser->data, stuser->data_len);  in mrpc_cmd_submit()
164 	iowrite32(stuser->cmd, &stdev->mmio_mrpc->cmd);  in mrpc_cmd_submit()
170 static int mrpc_queue_cmd(struct switchtec_user *stuser)  in mrpc_queue_cmd()  argument
174 	struct switchtec_dev *stdev = stuser->stdev;  in mrpc_queue_cmd()
176 	kref_get(&stuser->kref);  in mrpc_queue_cmd()
177 	stuser->read_len = sizeof(stuser->data);  in mrpc_queue_cmd()
178 	stuser_set_state(stuser, MRPC_QUEUED);  in mrpc_queue_cmd()
179 	stuser->cmd_done = false;  in mrpc_queue_cmd()
180 	list_add_tail(&stuser->list, &stdev->mrpc_queue);  in mrpc_queue_cmd()
190 	struct switchtec_user *stuser;  in mrpc_complete_cmd()  local
195 	stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,  in mrpc_complete_cmd()
199 		stuser->status = stdev->dma_mrpc->status;  in mrpc_complete_cmd()
201 		stuser->status = ioread32(&stdev->mmio_mrpc->status);  in mrpc_complete_cmd()
203 	if (stuser->status == SWITCHTEC_MRPC_STATUS_INPROGRESS)  in mrpc_complete_cmd()
206 	stuser_set_state(stuser, MRPC_DONE);  in mrpc_complete_cmd()
207 	stuser->return_code = 0;  in mrpc_complete_cmd()
209 	if (stuser->status != SWITCHTEC_MRPC_STATUS_DONE)  in mrpc_complete_cmd()
213 		stuser->return_code = stdev->dma_mrpc->rtn_code;  in mrpc_complete_cmd()
215 		stuser->return_code = ioread32(&stdev->mmio_mrpc->ret_value);  in mrpc_complete_cmd()
216 	if (stuser->return_code != 0)  in mrpc_complete_cmd()
220 		memcpy(stuser->data, &stdev->dma_mrpc->data,  in mrpc_complete_cmd()
221 			      stuser->read_len);  in mrpc_complete_cmd()
223 		memcpy_fromio(stuser->data, &stdev->mmio_mrpc->output_data,  in mrpc_complete_cmd()
224 			      stuser->read_len);  in mrpc_complete_cmd()
226 	stuser->cmd_done = true;  in mrpc_complete_cmd()
227 	wake_up_interruptible(&stuser->cmd_comp);  in mrpc_complete_cmd()
228 	list_del_init(&stuser->list);  in mrpc_complete_cmd()
229 	stuser_put(stuser);  in mrpc_complete_cmd()
419 	struct switchtec_user *stuser;  in switchtec_dev_open()  local
423 	stuser = stuser_create(stdev);  in switchtec_dev_open()
424 	if (IS_ERR(stuser))  in switchtec_dev_open()
425 		return PTR_ERR(stuser);  in switchtec_dev_open()
427 	filp->private_data = stuser;  in switchtec_dev_open()
430 	dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);  in switchtec_dev_open()
437 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_release()  local
439 	stuser_put(stuser);  in switchtec_dev_release()
460 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_write()  local
461 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_write()
464 	if (size < sizeof(stuser->cmd) ||  in switchtec_dev_write()
465 	    size > sizeof(stuser->cmd) + sizeof(stuser->data))  in switchtec_dev_write()
468 	stuser->data_len = size - sizeof(stuser->cmd);  in switchtec_dev_write()
474 	if (stuser->state != MRPC_IDLE) {  in switchtec_dev_write()
479 	rc = copy_from_user(&stuser->cmd, data, sizeof(stuser->cmd));  in switchtec_dev_write()
484 	if (((MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_WRITE) ||  in switchtec_dev_write()
485 	     (MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_READ)) &&  in switchtec_dev_write()
491 	data += sizeof(stuser->cmd);  in switchtec_dev_write()
492 	rc = copy_from_user(&stuser->data, data, size - sizeof(stuser->cmd));  in switchtec_dev_write()
498 	rc = mrpc_queue_cmd(stuser);  in switchtec_dev_write()
512 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_read()  local
513 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_read()
516 	if (size < sizeof(stuser->cmd) ||  in switchtec_dev_read()
517 	    size > sizeof(stuser->cmd) + sizeof(stuser->data))  in switchtec_dev_read()
524 	if (stuser->state == MRPC_IDLE) {  in switchtec_dev_read()
529 	stuser->read_len = size - sizeof(stuser->return_code);  in switchtec_dev_read()
534 		if (!stuser->cmd_done)  in switchtec_dev_read()
537 		rc = wait_event_interruptible(stuser->cmd_comp,  in switchtec_dev_read()
538 					      stuser->cmd_done);  in switchtec_dev_read()
547 	if (stuser->state != MRPC_DONE) {  in switchtec_dev_read()
552 	rc = copy_to_user(data, &stuser->return_code,  in switchtec_dev_read()
553 			  sizeof(stuser->return_code));  in switchtec_dev_read()
559 	data += sizeof(stuser->return_code);  in switchtec_dev_read()
560 	rc = copy_to_user(data, &stuser->data,  in switchtec_dev_read()
561 			  size - sizeof(stuser->return_code));  in switchtec_dev_read()
567 	stuser_set_state(stuser, MRPC_IDLE);  in switchtec_dev_read()
572 	if (stuser->status == SWITCHTEC_MRPC_STATUS_DONE)  in switchtec_dev_read()
574 	else if (stuser->status == SWITCHTEC_MRPC_STATUS_INTERRUPTED)  in switchtec_dev_read()
582 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_poll()  local
583 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_poll()
586 	poll_wait(filp, &stuser->cmd_comp, wait);  in switchtec_dev_poll()
594 	if (stuser->cmd_done)  in switchtec_dev_poll()
597 	if (stuser->event_cnt != atomic_read(&stdev->event_cnt))  in switchtec_dev_poll()
834 	struct switchtec_user *stuser,  in ioctl_event_summary()  argument
866 	stuser->event_cnt = atomic_read(&stdev->event_cnt);  in ioctl_event_summary()
1147 	struct switchtec_user *stuser = filp->private_data;  in switchtec_dev_ioctl()  local
1148 	struct switchtec_dev *stdev = stuser->stdev;  in switchtec_dev_ioctl()
1164 		rc = ioctl_event_summary(stdev, stuser, argp,  in switchtec_dev_ioctl()
1177 		rc = ioctl_event_summary(stdev, stuser, argp,  in switchtec_dev_ioctl()
1266 	struct switchtec_user *stuser, *tmpuser;  in stdev_kill()  local
1277 	list_for_each_entry_safe(stuser, tmpuser, &stdev->mrpc_queue, list) {  in stdev_kill()
1278 		stuser->cmd_done = true;  in stdev_kill()
1279 		wake_up_interruptible(&stuser->cmd_comp);  in stdev_kill()
1280 		list_del_init(&stuser->list);  in stdev_kill()
1281 		stuser_put(stuser);  in stdev_kill()