390 static void ibmvmc_free_hmc_buffer(struct ibmvmc_hmc *hmc,  in ibmvmc_free_hmc_buffer()  argument
395 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_free_hmc_buffer()
397 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_free_hmc_buffer()
478 static int ibmvmc_return_hmc(struct ibmvmc_hmc *hmc, bool release_readers)  in ibmvmc_return_hmc()  argument
486 	if (!hmc || !hmc->adapter)  in ibmvmc_return_hmc()
490 		if (hmc->file_session) {  in ibmvmc_return_hmc()
491 			struct ibmvmc_file_session *session = hmc->file_session;  in ibmvmc_return_hmc()
498 	adapter = hmc->adapter;  in ibmvmc_return_hmc()
501 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_return_hmc()
502 	hmc->index = 0;  in ibmvmc_return_hmc()
503 	hmc->state = ibmhmc_state_free;  in ibmvmc_return_hmc()
504 	hmc->queue_head = 0;  in ibmvmc_return_hmc()
505 	hmc->queue_tail = 0;  in ibmvmc_return_hmc()
506 	buffer = hmc->buffer;  in ibmvmc_return_hmc()
517 		hmc->queue_outbound_msgs[i] = VMC_INVALID_BUFFER_ID;  in ibmvmc_return_hmc()
520 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_return_hmc()
544 			    struct ibmvmc_hmc *hmc)  in ibmvmc_send_open()  argument
551 	if (!hmc || !hmc->adapter)  in ibmvmc_send_open()
554 	adapter = hmc->adapter;  in ibmvmc_send_open()
573 	hmc->state = ibmhmc_state_opening;  in ibmvmc_send_open()
579 	crq_msg.hmc_session = hmc->session;  in ibmvmc_send_open()
580 	crq_msg.hmc_index = hmc->index;  in ibmvmc_send_open()
605 static int ibmvmc_send_close(struct ibmvmc_hmc *hmc)  in ibmvmc_send_close()  argument
612 	if (!hmc || !hmc->adapter)  in ibmvmc_send_close()
615 	adapter = hmc->adapter;  in ibmvmc_send_close()
623 	crq_msg.hmc_session = hmc->session;  in ibmvmc_send_close()
624 	crq_msg.hmc_index = hmc->index;  in ibmvmc_send_close()
779 			   struct ibmvmc_hmc *hmc, int msg_len)  in ibmvmc_send_msg()  argument
801 	crq_msg.hmc_session = hmc->session;  in ibmvmc_send_msg()
802 	crq_msg.hmc_index = hmc->index;  in ibmvmc_send_msg()
856 	struct ibmvmc_hmc *hmc;  in ibmvmc_close()  local
867 	hmc = session->hmc;  in ibmvmc_close()
868 	if (hmc) {  in ibmvmc_close()
869 		if (!hmc->adapter)  in ibmvmc_close()
873 			dev_warn(hmc->adapter->dev, "close: state_failed\n");  in ibmvmc_close()
877 		spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_close()
878 		if (hmc->state >= ibmhmc_state_opening) {  in ibmvmc_close()
879 			rc = ibmvmc_send_close(hmc);  in ibmvmc_close()
881 				dev_warn(hmc->adapter->dev, "close: send_close failed.\n");  in ibmvmc_close()
883 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_close()
907 	struct ibmvmc_hmc *hmc;  in ibmvmc_read()  local
934 	hmc = session->hmc;  in ibmvmc_read()
935 	if (!hmc) {  in ibmvmc_read()
940 	adapter = hmc->adapter;  in ibmvmc_read()
949 		spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_read()
950 		if (hmc->queue_tail != hmc->queue_head)  in ibmvmc_read()
954 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_read()
973 	buffer = &(hmc->buffer[hmc->queue_outbound_msgs[hmc->queue_tail]]);  in ibmvmc_read()
974 	hmc->queue_tail++;  in ibmvmc_read()
975 	if (hmc->queue_tail == ibmvmc_max_buf_pool_size)  in ibmvmc_read()
976 		hmc->queue_tail = 0;  in ibmvmc_read()
977 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_read()
982 	ibmvmc_free_hmc_buffer(hmc, buffer);  in ibmvmc_read()
1008 	struct ibmvmc_hmc *hmc;  in ibmvmc_poll()  local
1015 	hmc = session->hmc;  in ibmvmc_poll()
1016 	if (!hmc)  in ibmvmc_poll()
1021 	if (hmc->queue_head != hmc->queue_tail)  in ibmvmc_poll()
1046 	struct ibmvmc_hmc *hmc;  in ibmvmc_write()  local
1058 	hmc = session->hmc;  in ibmvmc_write()
1059 	if (!hmc)  in ibmvmc_write()
1062 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_write()
1063 	if (hmc->state == ibmhmc_state_free) {  in ibmvmc_write()
1069 	adapter = hmc->adapter;  in ibmvmc_write()
1083 	if (hmc->state == ibmhmc_state_opening) {  in ibmvmc_write()
1091 	if (hmc->state != ibmhmc_state_ready) {  in ibmvmc_write()
1096 	vmc_buffer = ibmvmc_get_valid_hmc_buffer(hmc->index);  in ibmvmc_write()
1133 	ibmvmc_send_msg(adapter, vmc_buffer, hmc, count);  in ibmvmc_write()
1136 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_write()
1151 	struct ibmvmc_hmc *hmc;  in ibmvmc_setup_hmc()  local
1178 	hmc = ibmvmc_get_free_hmc();  in ibmvmc_setup_hmc()
1179 	if (!hmc) {  in ibmvmc_setup_hmc()
1184 	hmc->session = hmc->session + 1;  in ibmvmc_setup_hmc()
1185 	if (hmc->session == 0xff)  in ibmvmc_setup_hmc()
1186 		hmc->session = 1;  in ibmvmc_setup_hmc()
1188 	session->hmc = hmc;  in ibmvmc_setup_hmc()
1189 	hmc->adapter = &ibmvmc_adapter;  in ibmvmc_setup_hmc()
1190 	hmc->file_session = session;  in ibmvmc_setup_hmc()
1211 	struct ibmvmc_hmc *hmc;  in ibmvmc_ioctl_sethmcid()  local
1219 	hmc = session->hmc;  in ibmvmc_ioctl_sethmcid()
1220 	if (!hmc) {  in ibmvmc_ioctl_sethmcid()
1225 		hmc = session->hmc;  in ibmvmc_ioctl_sethmcid()
1226 		if (!hmc) {  in ibmvmc_ioctl_sethmcid()
1232 	if (hmc->state != ibmhmc_state_initial) {  in ibmvmc_ioctl_sethmcid()
1234 			hmc->state);  in ibmvmc_ioctl_sethmcid()
1238 	bytes = copy_from_user(hmc->hmc_id, new_hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1243 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_ioctl_sethmcid()
1244 	buffer = ibmvmc_get_valid_hmc_buffer(hmc->index);  in ibmvmc_ioctl_sethmcid()
1245 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_ioctl_sethmcid()
1254 	strncpy(print_buffer, hmc->hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1257 	memcpy(buffer->real_addr_local, hmc->hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1259 	rc = ibmvmc_send_open(buffer, hmc);  in ibmvmc_ioctl_sethmcid()
1601 	struct ibmvmc_hmc *hmc;  in ibmvmc_recv_msg()  local
1638 	hmc = &hmcs[hmc_index];  in ibmvmc_recv_msg()
1639 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_recv_msg()
1641 	if (hmc->state == ibmhmc_state_free) {  in ibmvmc_recv_msg()
1643 			hmc->state);  in ibmvmc_recv_msg()
1645 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1649 	buffer = &hmc->buffer[buffer_id];  in ibmvmc_recv_msg()
1654 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1667 		(unsigned int)hmc->queue_head, (unsigned int)hmc_index);  in ibmvmc_recv_msg()
1675 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1680 	hmc->queue_outbound_msgs[hmc->queue_head] = buffer_id;  in ibmvmc_recv_msg()
1681 	hmc->queue_head++;  in ibmvmc_recv_msg()
1682 	if (hmc->queue_head == ibmvmc_max_buf_pool_size)  in ibmvmc_recv_msg()
1683 		hmc->queue_head = 0;  in ibmvmc_recv_msg()
1685 	if (hmc->queue_head == hmc->queue_tail)  in ibmvmc_recv_msg()
1688 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()