accel/ivpu/ivpu_ipc.c

66 ivpu_ipc_tx_prepare(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
101 	tx_buf->ipc.channel = cons->channel;
111 	cons->request_id = req->request_id;
114 	cons->tx_vpu_addr = tx_buf_vpu_addr;
136 ivpu_ipc_rx_msg_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
155 	rx_msg->callback = cons->rx_callback;
160 		spin_lock(&cons->rx_lock);
161 		list_add_tail(&rx_msg->link, &cons->rx_msg_list);
162 		spin_unlock(&cons->rx_lock);
163 		wake_up(&cons->rx_msg_wq);
176 void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
181 	INIT_LIST_HEAD(&cons->link);
182 	cons->channel = channel;
183 	cons->tx_vpu_addr = 0;
184 	cons->request_id = 0;
185 	cons->aborted = false;
186 	cons->rx_callback = rx_callback;
187 	spin_lock_init(&cons->rx_lock);
188 	INIT_LIST_HEAD(&cons->rx_msg_list);
189 	init_waitqueue_head(&cons->rx_msg_wq);
192 	list_add_tail(&cons->link, &ipc->cons_list);
196 void ivpu_ipc_consumer_del(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons)
202 	list_del(&cons->link);
205 	spin_lock_irq(&cons->rx_lock);
206 	list_for_each_entry_safe(rx_msg, r, &cons->rx_msg_list, link)
208 	spin_unlock_irq(&cons->rx_lock);
210 	ivpu_ipc_tx_release(vdev, cons->tx_vpu_addr);
214 ivpu_ipc_send(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons, struct vpu_jsm_msg *req)
226 	ret = ivpu_ipc_tx_prepare(vdev, cons, req);
230 	ivpu_ipc_tx(vdev, cons->tx_vpu_addr);
237 static bool ivpu_ipc_rx_need_wakeup(struct ivpu_ipc_consumer *cons)
241 	spin_lock_irq(&cons->rx_lock);
242 	ret = !list_empty(&cons->rx_msg_list) || cons->aborted;
243 	spin_unlock_irq(&cons->rx_lock);
248 int ivpu_ipc_receive(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
255 	if (drm_WARN_ONCE(&vdev->drm, cons->rx_callback, "Consumer works only in async mode\n"))
258 	wait_ret = wait_event_timeout(cons->rx_msg_wq,
259 				      ivpu_ipc_rx_need_wakeup(cons),
265 	spin_lock_irq(&cons->rx_lock);
266 	if (cons->aborted) {
267 		spin_unlock_irq(&cons->rx_lock);
270 	rx_msg = list_first_entry_or_null(&cons->rx_msg_list, struct ivpu_ipc_rx_msg, link);
272 		spin_unlock_irq(&cons->rx_lock);
291 	spin_unlock_irq(&cons->rx_lock);
301 	struct ivpu_ipc_consumer cons;
304 	ivpu_ipc_consumer_add(vdev, &cons, channel, NULL);
306 	ret = ivpu_ipc_send(vdev, &cons, req);
312 	ret = ivpu_ipc_receive(vdev, &cons, NULL, resp, timeout_ms);
325 	ivpu_ipc_consumer_del(vdev, &cons);
369 ivpu_ipc_match_consumer(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
372 	if (cons->channel != ipc_hdr->channel)
375 	if (!jsm_msg || jsm_msg->request_id == cons->request_id)
384 	struct ivpu_ipc_consumer *cons;
430 		list_for_each_entry(cons, &ipc->cons_list, link) {
431 			if (ivpu_ipc_match_consumer(vdev, cons, ipc_hdr, jsm_msg)) {
432 				ivpu_ipc_rx_msg_add(vdev, cons, ipc_hdr, jsm_msg);
543 	struct ivpu_ipc_consumer *cons, *c;
553 	list_for_each_entry_safe(cons, c, &ipc->cons_list, link) {
554 		spin_lock(&cons->rx_lock);
555 		if (!cons->rx_callback)
556 			cons->aborted = true;
557 		list_for_each_entry_safe(rx_msg, r, &cons->rx_msg_list, link)
559 		spin_unlock(&cons->rx_lock);
560 		wake_up(&cons->rx_msg_wq);