29 struct vmbus_connection vmbus_connection = {  variable
32 				  vmbus_connection.unload_event),
36 				  vmbus_connection.ready_for_suspend_event),
38 				  vmbus_connection.ready_for_resume_event),
40 EXPORT_SYMBOL_GPL(vmbus_connection);
101 		vmbus_connection.msg_conn_id = VMBUS_MESSAGE_CONNECTION_ID_4;  in vmbus_negotiate_version()
103 		msg->interrupt_page = virt_to_phys(vmbus_connection.int_page);  in vmbus_negotiate_version()
104 		vmbus_connection.msg_conn_id = VMBUS_MESSAGE_CONNECTION_ID;  in vmbus_negotiate_version()
107 	msg->monitor_page1 = vmbus_connection.monitor_pages_pa[0];  in vmbus_negotiate_version()
108 	msg->monitor_page2 = vmbus_connection.monitor_pages_pa[1];  in vmbus_negotiate_version()
116 	spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);  in vmbus_negotiate_version()
118 		      &vmbus_connection.chn_msg_list);  in vmbus_negotiate_version()
120 	spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);  in vmbus_negotiate_version()
129 		spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);  in vmbus_negotiate_version()
131 		spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock,  in vmbus_negotiate_version()
139 	spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);  in vmbus_negotiate_version()
141 	spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);  in vmbus_negotiate_version()
145 		vmbus_connection.conn_state = CONNECTED;  in vmbus_negotiate_version()
148 			vmbus_connection.msg_conn_id =  in vmbus_negotiate_version()
167 	vmbus_connection.conn_state = CONNECTING;  in vmbus_connect()
168 	vmbus_connection.work_queue = create_workqueue("hv_vmbus_con");  in vmbus_connect()
169 	if (!vmbus_connection.work_queue) {  in vmbus_connect()
174 	vmbus_connection.rescind_work_queue =  in vmbus_connect()
176 	if (!vmbus_connection.rescind_work_queue) {  in vmbus_connect()
180 	vmbus_connection.ignore_any_offer_msg = false;  in vmbus_connect()
182 	vmbus_connection.handle_primary_chan_wq =  in vmbus_connect()
184 	if (!vmbus_connection.handle_primary_chan_wq) {  in vmbus_connect()
189 	vmbus_connection.handle_sub_chan_wq =  in vmbus_connect()
191 	if (!vmbus_connection.handle_sub_chan_wq) {  in vmbus_connect()
196 	INIT_LIST_HEAD(&vmbus_connection.chn_msg_list);  in vmbus_connect()
197 	spin_lock_init(&vmbus_connection.channelmsg_lock);  in vmbus_connect()
199 	INIT_LIST_HEAD(&vmbus_connection.chn_list);  in vmbus_connect()
200 	mutex_init(&vmbus_connection.channel_mutex);  in vmbus_connect()
206 	vmbus_connection.int_page =  in vmbus_connect()
208 	if (vmbus_connection.int_page == NULL) {  in vmbus_connect()
213 	vmbus_connection.recv_int_page = vmbus_connection.int_page;  in vmbus_connect()
214 	vmbus_connection.send_int_page =  in vmbus_connect()
215 		(void *)((unsigned long)vmbus_connection.int_page +  in vmbus_connect()
222 	vmbus_connection.monitor_pages[0] = (void *)hv_alloc_hyperv_zeroed_page();  in vmbus_connect()
223 	vmbus_connection.monitor_pages[1] = (void *)hv_alloc_hyperv_zeroed_page();  in vmbus_connect()
224 	if ((vmbus_connection.monitor_pages[0] == NULL) ||  in vmbus_connect()
225 	    (vmbus_connection.monitor_pages[1] == NULL)) {  in vmbus_connect()
230 	vmbus_connection.monitor_pages_original[0]  in vmbus_connect()
231 		= vmbus_connection.monitor_pages[0];  in vmbus_connect()
232 	vmbus_connection.monitor_pages_original[1]  in vmbus_connect()
233 		= vmbus_connection.monitor_pages[1];  in vmbus_connect()
234 	vmbus_connection.monitor_pages_pa[0]  in vmbus_connect()
235 		= virt_to_phys(vmbus_connection.monitor_pages[0]);  in vmbus_connect()
236 	vmbus_connection.monitor_pages_pa[1]  in vmbus_connect()
237 		= virt_to_phys(vmbus_connection.monitor_pages[1]);  in vmbus_connect()
241 					   vmbus_connection.monitor_pages[0],  in vmbus_connect()
244 					    vmbus_connection.monitor_pages[1],  in vmbus_connect()
254 			vmbus_connection.monitor_pages_pa[0] +=  in vmbus_connect()
256 			vmbus_connection.monitor_pages_pa[1] +=  in vmbus_connect()
259 			vmbus_connection.monitor_pages[0]  in vmbus_connect()
260 				= memremap(vmbus_connection.monitor_pages_pa[0],  in vmbus_connect()
263 			if (!vmbus_connection.monitor_pages[0]) {  in vmbus_connect()
268 			vmbus_connection.monitor_pages[1]  in vmbus_connect()
269 				= memremap(vmbus_connection.monitor_pages_pa[1],  in vmbus_connect()
272 			if (!vmbus_connection.monitor_pages[1]) {  in vmbus_connect()
282 		memset(vmbus_connection.monitor_pages[0], 0x00,  in vmbus_connect()
284 		memset(vmbus_connection.monitor_pages[1], 0x00,  in vmbus_connect()
318 		if (vmbus_connection.conn_state == CONNECTED)  in vmbus_connect()
333 	vmbus_connection.channels = kcalloc(MAX_CHANNEL_RELIDS,  in vmbus_connect()
336 	if (vmbus_connection.channels == NULL) {  in vmbus_connect()
347 	vmbus_connection.conn_state = DISCONNECTED;  in vmbus_connect()
362 	if (vmbus_connection.handle_sub_chan_wq)  in vmbus_disconnect()
363 		destroy_workqueue(vmbus_connection.handle_sub_chan_wq);  in vmbus_disconnect()
365 	if (vmbus_connection.handle_primary_chan_wq)  in vmbus_disconnect()
366 		destroy_workqueue(vmbus_connection.handle_primary_chan_wq);  in vmbus_disconnect()
368 	if (vmbus_connection.rescind_work_queue)  in vmbus_disconnect()
369 		destroy_workqueue(vmbus_connection.rescind_work_queue);  in vmbus_disconnect()
371 	if (vmbus_connection.work_queue)  in vmbus_disconnect()
372 		destroy_workqueue(vmbus_connection.work_queue);  in vmbus_disconnect()
374 	if (vmbus_connection.int_page) {  in vmbus_disconnect()
375 		hv_free_hyperv_page((unsigned long)vmbus_connection.int_page);  in vmbus_disconnect()
376 		vmbus_connection.int_page = NULL;  in vmbus_disconnect()
385 		memunmap(vmbus_connection.monitor_pages[0]);  in vmbus_disconnect()
386 		memunmap(vmbus_connection.monitor_pages[1]);  in vmbus_disconnect()
389 			vmbus_connection.monitor_pages_original[0],  in vmbus_disconnect()
392 			vmbus_connection.monitor_pages_original[1],  in vmbus_disconnect()
397 		vmbus_connection.monitor_pages_original[0]);  in vmbus_disconnect()
399 		vmbus_connection.monitor_pages_original[1]);  in vmbus_disconnect()
400 	vmbus_connection.monitor_pages_original[0] =  in vmbus_disconnect()
401 		vmbus_connection.monitor_pages[0] = NULL;  in vmbus_disconnect()
402 	vmbus_connection.monitor_pages_original[1] =  in vmbus_disconnect()
403 		vmbus_connection.monitor_pages[1] = NULL;  in vmbus_disconnect()
414 	return READ_ONCE(vmbus_connection.channels[relid]);  in relid2channel()
472 	conn_id.u.id = vmbus_connection.msg_conn_id;  in vmbus_post_msg()