154 static u32 goldfish_cmd_status(struct goldfish_pipe *pipe, u32 cmd)  in goldfish_cmd_status()  argument
158 	struct goldfish_pipe_dev *dev = pipe->dev;  in goldfish_cmd_status()
161 	gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,  in goldfish_cmd_status()
169 static void goldfish_cmd(struct goldfish_pipe *pipe, u32 cmd)  in goldfish_cmd()  argument
172 	struct goldfish_pipe_dev *dev = pipe->dev;  in goldfish_cmd()
175 	gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,  in goldfish_cmd()
243 				struct goldfish_pipe *pipe, int *status)  in access_with_param()  argument
251 	aps->channel = (unsigned long)pipe;  in access_with_param()
273 	struct goldfish_pipe *pipe = filp->private_data;  in goldfish_pipe_read_write()  local
274 	struct goldfish_pipe_dev *dev = pipe->dev;  in goldfish_pipe_read_write()
281 	if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))  in goldfish_pipe_read_write()
294 	if (mutex_lock_interruptible(&pipe->lock))  in goldfish_pipe_read_write()
329 				address, avail, pipe, &status)) {  in goldfish_pipe_read_write()
330 			gf_write64((u64)(unsigned long)pipe,  in goldfish_pipe_read_write()
370 		set_bit(wakeBit, &pipe->flags);  in goldfish_pipe_read_write()
373 		goldfish_cmd(pipe, CMD_WAKE_ON_WRITE + cmd_offset);  in goldfish_pipe_read_write()
376 		mutex_unlock(&pipe->lock);  in goldfish_pipe_read_write()
378 		while (test_bit(wakeBit, &pipe->flags)) {  in goldfish_pipe_read_write()
380 					pipe->wake_queue,  in goldfish_pipe_read_write()
381 					!test_bit(wakeBit, &pipe->flags)))  in goldfish_pipe_read_write()
384 			if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))  in goldfish_pipe_read_write()
389 		if (mutex_lock_interruptible(&pipe->lock))  in goldfish_pipe_read_write()
395 	mutex_unlock(&pipe->lock);  in goldfish_pipe_read_write()
416 	struct goldfish_pipe *pipe = filp->private_data;  in goldfish_pipe_poll()  local
420 	mutex_lock(&pipe->lock);  in goldfish_pipe_poll()
422 	poll_wait(filp, &pipe->wake_queue, wait);  in goldfish_pipe_poll()
424 	status = goldfish_cmd_status(pipe, CMD_POLL);  in goldfish_pipe_poll()
426 	mutex_unlock(&pipe->lock);  in goldfish_pipe_poll()
437 	if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))  in goldfish_pipe_poll()
456 		struct goldfish_pipe *pipe;  in goldfish_pipe_interrupt()  local
473 		pipe  = (struct goldfish_pipe *)(ptrdiff_t)channel;  in goldfish_pipe_interrupt()
477 			set_bit(BIT_CLOSED_ON_HOST, &pipe->flags);  in goldfish_pipe_interrupt()
481 			clear_bit(BIT_WAKE_ON_READ, &pipe->flags);  in goldfish_pipe_interrupt()
483 			clear_bit(BIT_WAKE_ON_WRITE, &pipe->flags);  in goldfish_pipe_interrupt()
485 		wake_up_interruptible(&pipe->wake_queue);  in goldfish_pipe_interrupt()
506 	struct goldfish_pipe *pipe;  in goldfish_pipe_open()  local
511 	pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);  in goldfish_pipe_open()
512 	if (pipe == NULL)  in goldfish_pipe_open()
515 	pipe->dev = dev;  in goldfish_pipe_open()
516 	mutex_init(&pipe->lock);  in goldfish_pipe_open()
517 	init_waitqueue_head(&pipe->wake_queue);  in goldfish_pipe_open()
524 	status = goldfish_cmd_status(pipe, CMD_OPEN);  in goldfish_pipe_open()
526 		kfree(pipe);  in goldfish_pipe_open()
531 	file->private_data = pipe;  in goldfish_pipe_open()
537 	struct goldfish_pipe *pipe = filp->private_data;  in goldfish_pipe_release()  local
540 	goldfish_cmd(pipe, CMD_CLOSE);  in goldfish_pipe_release()
541 	kfree(pipe);  in goldfish_pipe_release()