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()
853 	struct ibmvmc_hmc *hmc;  in ibmvmc_close()  local
864 	hmc = session->hmc;  in ibmvmc_close()
865 	if (hmc) {  in ibmvmc_close()
866 		if (!hmc->adapter)  in ibmvmc_close()
870 			dev_warn(hmc->adapter->dev, "close: state_failed\n");  in ibmvmc_close()
874 		spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_close()
875 		if (hmc->state >= ibmhmc_state_opening) {  in ibmvmc_close()
876 			rc = ibmvmc_send_close(hmc);  in ibmvmc_close()
878 				dev_warn(hmc->adapter->dev, "close: send_close failed.\n");  in ibmvmc_close()
880 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_close()
904 	struct ibmvmc_hmc *hmc;  in ibmvmc_read()  local
931 	hmc = session->hmc;  in ibmvmc_read()
932 	if (!hmc) {  in ibmvmc_read()
937 	adapter = hmc->adapter;  in ibmvmc_read()
946 		spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_read()
947 		if (hmc->queue_tail != hmc->queue_head)  in ibmvmc_read()
951 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_read()
970 	buffer = &(hmc->buffer[hmc->queue_outbound_msgs[hmc->queue_tail]]);  in ibmvmc_read()
971 	hmc->queue_tail++;  in ibmvmc_read()
972 	if (hmc->queue_tail == ibmvmc_max_buf_pool_size)  in ibmvmc_read()
973 		hmc->queue_tail = 0;  in ibmvmc_read()
974 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_read()
979 	ibmvmc_free_hmc_buffer(hmc, buffer);  in ibmvmc_read()
1005 	struct ibmvmc_hmc *hmc;  in ibmvmc_poll()  local
1012 	hmc = session->hmc;  in ibmvmc_poll()
1013 	if (!hmc)  in ibmvmc_poll()
1018 	if (hmc->queue_head != hmc->queue_tail)  in ibmvmc_poll()
1042 	struct ibmvmc_hmc *hmc;  in ibmvmc_write()  local
1054 	hmc = session->hmc;  in ibmvmc_write()
1055 	if (!hmc)  in ibmvmc_write()
1058 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_write()
1059 	if (hmc->state == ibmhmc_state_free) {  in ibmvmc_write()
1065 	adapter = hmc->adapter;  in ibmvmc_write()
1079 	if (hmc->state == ibmhmc_state_opening) {  in ibmvmc_write()
1087 	if (hmc->state != ibmhmc_state_ready) {  in ibmvmc_write()
1092 	vmc_buffer = ibmvmc_get_valid_hmc_buffer(hmc->index);  in ibmvmc_write()
1128 	ibmvmc_send_msg(adapter, vmc_buffer, hmc, count);  in ibmvmc_write()
1131 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_write()
1146 	struct ibmvmc_hmc *hmc;  in ibmvmc_setup_hmc()  local
1173 	hmc = ibmvmc_get_free_hmc();  in ibmvmc_setup_hmc()
1174 	if (!hmc) {  in ibmvmc_setup_hmc()
1179 	hmc->session = hmc->session + 1;  in ibmvmc_setup_hmc()
1180 	if (hmc->session == 0xff)  in ibmvmc_setup_hmc()
1181 		hmc->session = 1;  in ibmvmc_setup_hmc()
1183 	session->hmc = hmc;  in ibmvmc_setup_hmc()
1184 	hmc->adapter = &ibmvmc_adapter;  in ibmvmc_setup_hmc()
1185 	hmc->file_session = session;  in ibmvmc_setup_hmc()
1206 	struct ibmvmc_hmc *hmc;  in ibmvmc_ioctl_sethmcid()  local
1214 	hmc = session->hmc;  in ibmvmc_ioctl_sethmcid()
1215 	if (!hmc) {  in ibmvmc_ioctl_sethmcid()
1220 		hmc = session->hmc;  in ibmvmc_ioctl_sethmcid()
1221 		if (!hmc) {  in ibmvmc_ioctl_sethmcid()
1227 	if (hmc->state != ibmhmc_state_initial) {  in ibmvmc_ioctl_sethmcid()
1229 			hmc->state);  in ibmvmc_ioctl_sethmcid()
1233 	bytes = copy_from_user(hmc->hmc_id, new_hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1238 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_ioctl_sethmcid()
1239 	buffer = ibmvmc_get_valid_hmc_buffer(hmc->index);  in ibmvmc_ioctl_sethmcid()
1240 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_ioctl_sethmcid()
1249 	strncpy(print_buffer, hmc->hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1252 	memcpy(buffer->real_addr_local, hmc->hmc_id, HMC_ID_LEN);  in ibmvmc_ioctl_sethmcid()
1254 	rc = ibmvmc_send_open(buffer, hmc);  in ibmvmc_ioctl_sethmcid()
1596 	struct ibmvmc_hmc *hmc;  in ibmvmc_recv_msg()  local
1633 	hmc = &hmcs[hmc_index];  in ibmvmc_recv_msg()
1634 	spin_lock_irqsave(&hmc->lock, flags);  in ibmvmc_recv_msg()
1636 	if (hmc->state == ibmhmc_state_free) {  in ibmvmc_recv_msg()
1638 			hmc->state);  in ibmvmc_recv_msg()
1640 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1644 	buffer = &hmc->buffer[buffer_id];  in ibmvmc_recv_msg()
1649 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1662 		(unsigned int)hmc->queue_head, (unsigned int)hmc_index);  in ibmvmc_recv_msg()
1670 		spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()
1675 	hmc->queue_outbound_msgs[hmc->queue_head] = buffer_id;  in ibmvmc_recv_msg()
1676 	hmc->queue_head++;  in ibmvmc_recv_msg()
1677 	if (hmc->queue_head == ibmvmc_max_buf_pool_size)  in ibmvmc_recv_msg()
1678 		hmc->queue_head = 0;  in ibmvmc_recv_msg()
1680 	if (hmc->queue_head == hmc->queue_tail)  in ibmvmc_recv_msg()
1683 	spin_unlock_irqrestore(&hmc->lock, flags);  in ibmvmc_recv_msg()