1 files changed, 149 insertions, 32 deletions

diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 383144db4d1..4c70a9301c1 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -79,6 +79,11 @@ MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 1 ");
 
 static int port_name_cnt = 0;
+static LIST_HEAD(adapter_list);
+u64 ehea_driver_flags = 0;
+struct workqueue_struct *ehea_driver_wq;
+struct work_struct ehea_rereg_mr_task;
+
 
 static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 					const struct of_device_id *id);
@@ -238,13 +243,17 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
 		rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 			    | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 		rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
-		rwqe->sg_list[0].vaddr = (u64)skb->data;
+		rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
 		rwqe->sg_list[0].len = packet_size;
 		rwqe->data_segments = 1;
 
 		index++;
 		index &= max_index_mask;
+
+		if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
+			goto out;
 	}
+
 	q_skba->index = index;
 
 	/* Ring doorbell */
@@ -253,7 +262,7 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
 		ehea_update_rq2a(pr->qp, i);
 	else
 		ehea_update_rq3a(pr->qp, i);
-
+out:
 	return ret;
 }
 
@@ -457,6 +466,8 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev,
 							 cqe->vlan_tag);
 			else
 				netif_receive_skb(skb);
+
+			dev->last_rx = jiffies;
 		} else {
 			pr->p_stats.poll_receive_errors++;
 			port_reset = ehea_treat_poll_error(pr, rq, cqe,
@@ -1321,7 +1332,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
 			sg1entry->len = skb_data_size - headersize;
 
 			tmp_addr = (u64)(skb->data + headersize);
-			sg1entry->vaddr = tmp_addr;
+			sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
 			swqe->descriptors++;
 		}
 	} else
@@ -1352,7 +1363,7 @@ static void write_swqe2_nonTSO(struct sk_buff *skb,
 			sg1entry->l_key = lkey;
 			sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
 			tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
-			sg1entry->vaddr = tmp_addr;
+			sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
 			swqe->descriptors++;
 		}
 	} else {
@@ -1391,7 +1402,7 @@ static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
 			sg1entry->len = frag->size;
 			tmp_addr =  (u64)(page_address(frag->page)
 					  + frag->page_offset);
-			sg1entry->vaddr = tmp_addr;
+			sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
 			swqe->descriptors++;
 			sg1entry_contains_frag_data = 1;
 		}
@@ -1406,7 +1417,7 @@ static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
 
 			tmp_addr = (u64)(page_address(frag->page)
 					 + frag->page_offset);
-			sgentry->vaddr = tmp_addr;
+			sgentry->vaddr = ehea_map_vaddr(tmp_addr);
 			swqe->descriptors++;
 		}
 	}
@@ -1424,7 +1435,8 @@ static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
 				     port->logical_port_id,
 				     reg_type, port->mac_addr, 0, hcallid);
 	if (hret != H_SUCCESS) {
-		ehea_error("reg_dereg_bcmc failed (tagged)");
+		ehea_error("%sregistering bc address failed (tagged)",
+                           hcallid == H_REG_BCMC ? "" : "de");
 		ret = -EIO;
 		goto out_herr;
 	}
@@ -1435,7 +1447,8 @@ static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
 				     port->logical_port_id,
 				     reg_type, port->mac_addr, 0, hcallid);
 	if (hret != H_SUCCESS) {
-		ehea_error("reg_dereg_bcmc failed (vlan)");
+		ehea_error("%sregistering bc address failed (vlan)",
+			   hcallid == H_REG_BCMC ? "" : "de");
 		ret = -EIO;
 	}
 out_herr:
@@ -1878,6 +1891,9 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		ehea_dump(swqe, 512, "swqe");
 	}
 
+	if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
+		goto out;
+
 	ehea_post_swqe(pr->qp, swqe);
 	pr->tx_packets++;
 
@@ -1892,7 +1908,7 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 	dev->trans_start = jiffies;
 	spin_unlock(&pr->xmit_lock);
-
+out:
 	return NETDEV_TX_OK;
 }
 
@@ -2158,7 +2174,6 @@ static int ehea_up(struct net_device *dev)
 {
 	int ret, i;
 	struct ehea_port *port = netdev_priv(dev);
-	u64 mac_addr = 0;
 
 	if (port->state == EHEA_PORT_UP)
 		return 0;
@@ -2177,18 +2192,10 @@ static int ehea_up(struct net_device *dev)
 		goto out_clean_pr;
 	}
 
-	ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
-	if (ret) {
-		ret = -EIO;
-		ehea_error("out_clean_pr");
-		goto out_clean_pr;
-	}
-	mac_addr = (*(u64*)dev->dev_addr) >> 16;
-
 	ret = ehea_reg_interrupts(dev);
 	if (ret) {
-		ehea_error("out_dereg_bc");
-		goto out_dereg_bc;
+		ehea_error("reg_interrupts failed. ret:%d", ret);
+		goto out_clean_pr;
 	}
 
 	for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
@@ -2214,12 +2221,12 @@ static int ehea_up(struct net_device *dev)
 out_free_irqs:
 	ehea_free_interrupts(dev);
 
-out_dereg_bc:
-	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
-
 out_clean_pr:
 	ehea_clean_all_portres(port);
 out:
+	if (ret)
+		ehea_info("Failed starting %s. ret=%i", dev->name, ret);
+
 	return ret;
 }
 
@@ -2258,9 +2265,13 @@ static int ehea_down(struct net_device *dev)
 				&port->port_res[i].d_netdev->state))
 			msleep(1);
 
-	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
-	ret = ehea_clean_all_portres(port);
 	port->state = EHEA_PORT_DOWN;
+
+	ret = ehea_clean_all_portres(port);
+	if (ret)
+		ehea_info("Failed freeing resources for %s. ret=%i",
+			  dev->name, ret);
+
 	return ret;
 }
 
@@ -2292,15 +2303,11 @@ static void ehea_reset_port(struct work_struct *work)
 	netif_stop_queue(dev);
 	netif_poll_disable(dev);
 
-	ret = ehea_down(dev);
-	if (ret)
-		ehea_error("ehea_down failed. not all resources are freed");
+	ehea_down(dev);
 
 	ret = ehea_up(dev);
-	if (ret) {
-		ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
+	if (ret)
 		goto out;
-	}
 
 	if (netif_msg_timer(port))
 		ehea_info("Device %s resetted successfully", dev->name);
@@ -2312,6 +2319,88 @@ out:
 	return;
 }
 
+static void ehea_rereg_mrs(struct work_struct *work)
+{
+	int ret, i;
+	struct ehea_adapter *adapter;
+
+	ehea_info("LPAR memory enlarged - re-initializing driver");
+
+	list_for_each_entry(adapter, &adapter_list, list)
+		if (adapter->active_ports) {
+			/* Shutdown all ports */
+			for (i = 0; i < EHEA_MAX_PORTS; i++) {
+				struct ehea_port *port = adapter->port[i];
+
+				if (port) {
+					struct net_device *dev = port->netdev;
+
+					if (dev->flags & IFF_UP) {
+						ehea_info("stopping %s",
+							  dev->name);
+						down(&port->port_lock);
+						netif_stop_queue(dev);
+						netif_poll_disable(dev);
+						ehea_down(dev);
+						up(&port->port_lock);
+					}
+				}
+			}
+
+			/* Unregister old memory region */
+			ret = ehea_rem_mr(&adapter->mr);
+			if (ret) {
+				ehea_error("unregister MR failed - driver"
+					   " inoperable!");
+				goto out;
+			}
+		}
+
+	ehea_destroy_busmap();
+
+	ret = ehea_create_busmap();
+	if (ret)
+		goto out;
+
+	clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
+
+	list_for_each_entry(adapter, &adapter_list, list)
+		if (adapter->active_ports) {
+			/* Register new memory region */
+			ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
+			if (ret) {
+				ehea_error("register MR failed - driver"
+					   " inoperable!");
+				goto out;
+			}
+
+			/* Restart all ports */
+			for (i = 0; i < EHEA_MAX_PORTS; i++) {
+				struct ehea_port *port = adapter->port[i];
+
+				if (port) {
+					struct net_device *dev = port->netdev;
+
+					if (dev->flags & IFF_UP) {
+						ehea_info("restarting %s",
+							  dev->name);
+						down(&port->port_lock);
+
+						ret = ehea_up(dev);
+						if (!ret) {
+							netif_poll_enable(dev);
+							netif_wake_queue(dev);
+						}
+
+						up(&port->port_lock);
+					}
+				}
+			}
+		}
+out:
+	return;
+}
+
 static void ehea_tx_watchdog(struct net_device *dev)
 {
 	struct ehea_port *port = netdev_priv(dev);
@@ -2557,12 +2646,18 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 
 	INIT_WORK(&port->reset_task, ehea_reset_port);
 
+	ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+	if (ret) {
+		ret = -EIO;
+		goto out_unreg_port;
+	}
+
 	ehea_set_ethtool_ops(dev);
 
 	ret = register_netdev(dev);
 	if (ret) {
 		ehea_error("register_netdev failed. ret=%d", ret);
-		goto out_unreg_port;
+		goto out_dereg_bc;
 	}
 
 	ret = ehea_get_jumboframe_status(port, &jumbo);
@@ -2573,8 +2668,13 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 	ehea_info("%s: Jumbo frames are %sabled", dev->name,
 		  jumbo == 1 ? "en" : "dis");
 
+	adapter->active_ports++;
+
 	return port;
 
+out_dereg_bc:
+	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+
 out_unreg_port:
 	ehea_unregister_port(port);
 
@@ -2594,8 +2694,10 @@ static void ehea_shutdown_single_port(struct ehea_port *port)
 {
 	unregister_netdev(port->netdev);
 	ehea_unregister_port(port);
+	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
 	kfree(port->mc_list);
 	free_netdev(port->netdev);
+	port->adapter->active_ports--;
 }
 
 static int ehea_setup_ports(struct ehea_adapter *adapter)
@@ -2788,6 +2890,8 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 		goto out;
 	}
 
+	list_add(&adapter->list, &adapter_list);
+
 	adapter->ebus_dev = dev;
 
 	adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
@@ -2891,7 +2995,10 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev)
 
 	ehea_destroy_eq(adapter->neq);
 	ehea_remove_adapter_mr(adapter);
+	list_del(&adapter->list);
+
 	kfree(adapter);
+
 	return 0;
 }
 
@@ -2939,9 +3046,18 @@ int __init ehea_module_init(void)
 	printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
 	       DRV_VERSION);
 
+	ehea_driver_wq = create_workqueue("ehea_driver_wq");
+
+	INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
+
 	ret = check_module_parm();
 	if (ret)
 		goto out;
+
+	ret = ehea_create_busmap();
+	if (ret)
+		goto out;
+
 	ret = ibmebus_register_driver(&ehea_driver);
 	if (ret) {
 		ehea_error("failed registering eHEA device driver on ebus");
@@ -2965,6 +3081,7 @@ static void __exit ehea_module_exit(void)
 {
 	driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
 	ibmebus_unregister_driver(&ehea_driver);
+	ehea_destroy_busmap();
 }
 
 module_init(ehea_module_init);