Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 306 insertions, 51 deletions

diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index c051c7e09b9..9ff7538b759 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -35,6 +35,8 @@
 #include <linux/if_ether.h>
 #include <linux/notifier.h>
 #include <linux/reboot.h>
+#include <asm/kexec.h>
+#include <linux/mutex.h>
 
 #include <net/ip.h>
 
@@ -98,8 +100,10 @@ static int port_name_cnt;
 static LIST_HEAD(adapter_list);
 u64 ehea_driver_flags;
 struct work_struct ehea_rereg_mr_task;
+static DEFINE_MUTEX(dlpar_mem_lock);
+struct ehea_fw_handle_array ehea_fw_handles;
+struct ehea_bcmc_reg_array ehea_bcmc_regs;
 
-struct semaphore dlpar_mem_lock;
 
 static int __devinit ehea_probe_adapter(struct of_device *dev,
 					const struct of_device_id *id);
@@ -132,6 +136,160 @@ void ehea_dump(void *adr, int len, char *msg)
 	}
 }
 
+static void ehea_update_firmware_handles(void)
+{
+	struct ehea_fw_handle_entry *arr = NULL;
+	struct ehea_adapter *adapter;
+	int num_adapters = 0;
+	int num_ports = 0;
+	int num_portres = 0;
+	int i = 0;
+	int num_fw_handles, k, l;
+
+	/* Determine number of handles */
+	list_for_each_entry(adapter, &adapter_list, list) {
+		num_adapters++;
+
+		for (k = 0; k < EHEA_MAX_PORTS; k++) {
+			struct ehea_port *port = adapter->port[k];
+
+			if (!port || (port->state != EHEA_PORT_UP))
+				continue;
+
+			num_ports++;
+			num_portres += port->num_def_qps + port->num_add_tx_qps;
+		}
+	}
+
+	num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
+			 num_ports * EHEA_NUM_PORT_FW_HANDLES +
+			 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
+
+	if (num_fw_handles) {
+		arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
+		if (!arr)
+			return;  /* Keep the existing array */
+	} else
+		goto out_update;
+
+	list_for_each_entry(adapter, &adapter_list, list) {
+		for (k = 0; k < EHEA_MAX_PORTS; k++) {
+			struct ehea_port *port = adapter->port[k];
+
+			if (!port || (port->state != EHEA_PORT_UP))
+				continue;
+
+			for (l = 0;
+			     l < port->num_def_qps + port->num_add_tx_qps;
+			     l++) {
+				struct ehea_port_res *pr = &port->port_res[l];
+
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->qp->fw_handle;
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->send_cq->fw_handle;
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->recv_cq->fw_handle;
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->eq->fw_handle;
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->send_mr.handle;
+				arr[i].adh = adapter->handle;
+				arr[i++].fwh = pr->recv_mr.handle;
+			}
+			arr[i].adh = adapter->handle;
+			arr[i++].fwh = port->qp_eq->fw_handle;
+		}
+
+		arr[i].adh = adapter->handle;
+		arr[i++].fwh = adapter->neq->fw_handle;
+
+		if (adapter->mr.handle) {
+			arr[i].adh = adapter->handle;
+			arr[i++].fwh = adapter->mr.handle;
+		}
+	}
+
+out_update:
+	kfree(ehea_fw_handles.arr);
+	ehea_fw_handles.arr = arr;
+	ehea_fw_handles.num_entries = i;
+}
+
+static void ehea_update_bcmc_registrations(void)
+{
+	struct ehea_bcmc_reg_entry *arr = NULL;
+	struct ehea_adapter *adapter;
+	struct ehea_mc_list *mc_entry;
+	int num_registrations = 0;
+	int i = 0;
+	int k;
+
+	/* Determine number of registrations */
+	list_for_each_entry(adapter, &adapter_list, list)
+		for (k = 0; k < EHEA_MAX_PORTS; k++) {
+			struct ehea_port *port = adapter->port[k];
+
+			if (!port || (port->state != EHEA_PORT_UP))
+				continue;
+
+			num_registrations += 2;	/* Broadcast registrations */
+
+			list_for_each_entry(mc_entry, &port->mc_list->list,list)
+				num_registrations += 2;
+		}
+
+	if (num_registrations) {
+		arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
+		if (!arr)
+			return;  /* Keep the existing array */
+	} else
+		goto out_update;
+
+	list_for_each_entry(adapter, &adapter_list, list) {
+		for (k = 0; k < EHEA_MAX_PORTS; k++) {
+			struct ehea_port *port = adapter->port[k];
+
+			if (!port || (port->state != EHEA_PORT_UP))
+				continue;
+
+			arr[i].adh = adapter->handle;
+			arr[i].port_id = port->logical_port_id;
+			arr[i].reg_type = EHEA_BCMC_BROADCAST |
+					  EHEA_BCMC_UNTAGGED;
+			arr[i++].macaddr = port->mac_addr;
+
+			arr[i].adh = adapter->handle;
+			arr[i].port_id = port->logical_port_id;
+			arr[i].reg_type = EHEA_BCMC_BROADCAST |
+					  EHEA_BCMC_VLANID_ALL;
+			arr[i++].macaddr = port->mac_addr;
+
+			list_for_each_entry(mc_entry,
+					    &port->mc_list->list, list) {
+				arr[i].adh = adapter->handle;
+				arr[i].port_id = port->logical_port_id;
+				arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
+						  EHEA_BCMC_MULTICAST |
+						  EHEA_BCMC_UNTAGGED;
+				arr[i++].macaddr = mc_entry->macaddr;
+
+				arr[i].adh = adapter->handle;
+				arr[i].port_id = port->logical_port_id;
+				arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
+						  EHEA_BCMC_MULTICAST |
+						  EHEA_BCMC_VLANID_ALL;
+				arr[i++].macaddr = mc_entry->macaddr;
+			}
+		}
+	}
+
+out_update:
+	kfree(ehea_bcmc_regs.arr);
+	ehea_bcmc_regs.arr = arr;
+	ehea_bcmc_regs.num_entries = i;
+}
+
 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 {
 	struct ehea_port *port = netdev_priv(dev);
@@ -192,7 +350,8 @@ static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 	pr->rq1_skba.os_skbs = 0;
 
 	if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
-		pr->rq1_skba.index = index;
+		if (nr_of_wqes > 0)
+			pr->rq1_skba.index = index;
 		pr->rq1_skba.os_skbs = fill_wqes;
 		return;
 	}
@@ -1307,7 +1466,9 @@ static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
 			  init_attr->act_nr_rwqes_rq2,
 			  init_attr->act_nr_rwqes_rq3);
 
-	ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
+	pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
+
+	ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
 	ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
 	ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
 	ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
@@ -1601,19 +1762,25 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa)
 
 	memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
 
+	mutex_lock(&ehea_bcmc_regs.lock);
+
 	/* Deregister old MAC in pHYP */
 	ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
 	if (ret)
-		goto out_free;
+		goto out_upregs;
 
 	port->mac_addr = cb0->port_mac_addr << 16;
 
 	/* Register new MAC in pHYP */
 	ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
 	if (ret)
-		goto out_free;
+		goto out_upregs;
 
 	ret = 0;
+
+out_upregs:
+	ehea_update_bcmc_registrations();
+	mutex_unlock(&ehea_bcmc_regs.lock);
 out_free:
 	kfree(cb0);
 out:
@@ -1775,9 +1942,11 @@ static void ehea_set_multicast_list(struct net_device *dev)
 	}
 	ehea_promiscuous(dev, 0);
 
+	mutex_lock(&ehea_bcmc_regs.lock);
+
 	if (dev->flags & IFF_ALLMULTI) {
 		ehea_allmulti(dev, 1);
-		return;
+		goto out;
 	}
 	ehea_allmulti(dev, 0);
 
@@ -1803,6 +1972,8 @@ static void ehea_set_multicast_list(struct net_device *dev)
 
 	}
 out:
+	ehea_update_bcmc_registrations();
+	mutex_unlock(&ehea_bcmc_regs.lock);
 	return;
 }
 
@@ -2285,6 +2456,8 @@ static int ehea_up(struct net_device *dev)
 	if (port->state == EHEA_PORT_UP)
 		return 0;
 
+	mutex_lock(&ehea_fw_handles.lock);
+
 	ret = ehea_port_res_setup(port, port->num_def_qps,
 				  port->num_add_tx_qps);
 	if (ret) {
@@ -2321,8 +2494,17 @@ static int ehea_up(struct net_device *dev)
 		}
 	}
 
-	ret = 0;
+	mutex_lock(&ehea_bcmc_regs.lock);
+
+	ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+	if (ret) {
+		ret = -EIO;
+		goto out_free_irqs;
+	}
+
 	port->state = EHEA_PORT_UP;
+
+	ret = 0;
 	goto out;
 
 out_free_irqs:
@@ -2334,6 +2516,12 @@ out:
 	if (ret)
 		ehea_info("Failed starting %s. ret=%i", dev->name, ret);
 
+	ehea_update_bcmc_registrations();
+	mutex_unlock(&ehea_bcmc_regs.lock);
+
+	ehea_update_firmware_handles();
+	mutex_unlock(&ehea_fw_handles.lock);
+
 	return ret;
 }
 
@@ -2358,7 +2546,7 @@ static int ehea_open(struct net_device *dev)
 	int ret;
 	struct ehea_port *port = netdev_priv(dev);
 
-	down(&port->port_lock);
+	mutex_lock(&port->port_lock);
 
 	if (netif_msg_ifup(port))
 		ehea_info("enabling port %s", dev->name);
@@ -2369,7 +2557,7 @@ static int ehea_open(struct net_device *dev)
 		netif_start_queue(dev);
 	}
 
-	up(&port->port_lock);
+	mutex_unlock(&port->port_lock);
 
 	return ret;
 }
@@ -2382,16 +2570,27 @@ static int ehea_down(struct net_device *dev)
 	if (port->state == EHEA_PORT_DOWN)
 		return 0;
 
+	mutex_lock(&ehea_fw_handles.lock);
+
+	mutex_lock(&ehea_bcmc_regs.lock);
 	ehea_drop_multicast_list(dev);
+	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+
 	ehea_free_interrupts(dev);
 
 	port->state = EHEA_PORT_DOWN;
 
+	ehea_update_bcmc_registrations();
+	mutex_unlock(&ehea_bcmc_regs.lock);
+
 	ret = ehea_clean_all_portres(port);
 	if (ret)
 		ehea_info("Failed freeing resources for %s. ret=%i",
 			  dev->name, ret);
 
+	ehea_update_firmware_handles();
+	mutex_unlock(&ehea_fw_handles.lock);
+
 	return ret;
 }
 
@@ -2404,11 +2603,11 @@ static int ehea_stop(struct net_device *dev)
 		ehea_info("disabling port %s", dev->name);
 
 	flush_scheduled_work();
-	down(&port->port_lock);
+	mutex_lock(&port->port_lock);
 	netif_stop_queue(dev);
 	port_napi_disable(port);
 	ret = ehea_down(dev);
-	up(&port->port_lock);
+	mutex_unlock(&port->port_lock);
 	return ret;
 }
 
@@ -2426,6 +2625,22 @@ void ehea_purge_sq(struct ehea_qp *orig_qp)
 	}
 }
 
+void ehea_flush_sq(struct ehea_port *port)
+{
+	int i;
+
+	for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
+		struct ehea_port_res *pr = &port->port_res[i];
+		int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
+		int k = 0;
+		while (atomic_read(&pr->swqe_avail) < swqe_max) {
+			msleep(5);
+			if (++k == 20)
+				break;
+		}
+	}
+}
+
 int ehea_stop_qps(struct net_device *dev)
 {
 	struct ehea_port *port = netdev_priv(dev);
@@ -2606,7 +2821,7 @@ static void ehea_reset_port(struct work_struct *work)
 	struct net_device *dev = port->netdev;
 
 	port->resets++;
-	down(&port->port_lock);
+	mutex_lock(&port->port_lock);
 	netif_stop_queue(dev);
 
 	port_napi_disable(port);
@@ -2626,7 +2841,7 @@ static void ehea_reset_port(struct work_struct *work)
 
 	netif_wake_queue(dev);
 out:
-	up(&port->port_lock);
+	mutex_unlock(&port->port_lock);
 	return;
 }
 
@@ -2635,7 +2850,7 @@ static void ehea_rereg_mrs(struct work_struct *work)
 	int ret, i;
 	struct ehea_adapter *adapter;
 
-	down(&dlpar_mem_lock);
+	mutex_lock(&dlpar_mem_lock);
 	ehea_info("LPAR memory enlarged - re-initializing driver");
 
 	list_for_each_entry(adapter, &adapter_list, list)
@@ -2643,21 +2858,24 @@ static void ehea_rereg_mrs(struct work_struct *work)
 			/* Shutdown all ports */
 			for (i = 0; i < EHEA_MAX_PORTS; i++) {
 				struct ehea_port *port = adapter->port[i];
+				struct net_device *dev;
 
-				if (port) {
-					struct net_device *dev = port->netdev;
+				if (!port)
+					continue;
 
-					if (dev->flags & IFF_UP) {
-						down(&port->port_lock);
-						netif_stop_queue(dev);
-						ret = ehea_stop_qps(dev);
-						if (ret) {
-							up(&port->port_lock);
-							goto out;
-						}
-						port_napi_disable(port);
-						up(&port->port_lock);
+				dev = port->netdev;
+
+				if (dev->flags & IFF_UP) {
+					mutex_lock(&port->port_lock);
+					netif_stop_queue(dev);
+					ehea_flush_sq(port);
+					ret = ehea_stop_qps(dev);
+					if (ret) {
+						mutex_unlock(&port->port_lock);
+						goto out;
 					}
+					port_napi_disable(port);
+					mutex_unlock(&port->port_lock);
 				}
 			}
 
@@ -2697,17 +2915,17 @@ static void ehea_rereg_mrs(struct work_struct *work)
 					struct net_device *dev = port->netdev;
 
 					if (dev->flags & IFF_UP) {
-						down(&port->port_lock);
+						mutex_lock(&port->port_lock);
 						port_napi_enable(port);
 						ret = ehea_restart_qps(dev);
 						if (!ret)
 							netif_wake_queue(dev);
-						up(&port->port_lock);
+						mutex_unlock(&port->port_lock);
 					}
 				}
 			}
 		}
-       up(&dlpar_mem_lock);
+       mutex_unlock(&dlpar_mem_lock);
        ehea_info("re-initializing driver complete");
 out:
 	return;
@@ -2868,7 +3086,7 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 
 	port = netdev_priv(dev);
 
-	sema_init(&port->port_lock, 1);
+	mutex_init(&port->port_lock);
 	port->state = EHEA_PORT_DOWN;
 	port->sig_comp_iv = sq_entries / 10;
 
@@ -2913,26 +3131,19 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 	dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
 	dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
 	dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
-		      | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
+		      | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
 		      | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
 		      | NETIF_F_LLTX;
 	dev->tx_timeout = &ehea_tx_watchdog;
 	dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
 
 	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_dereg_bc;
+		goto out_unreg_port;
 	}
 
 	port->lro_max_aggr = lro_max_aggr;
@@ -2949,9 +3160,6 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 
 	return port;
 
-out_dereg_bc:
-	ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
-
 out_unreg_port:
 	ehea_unregister_port(port);
 
@@ -2971,7 +3179,6 @@ 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--;
@@ -3014,7 +3221,6 @@ static int ehea_setup_ports(struct ehea_adapter *adapter)
 
 		i++;
 	};
-
 	return 0;
 }
 
@@ -3159,6 +3365,7 @@ static int __devinit ehea_probe_adapter(struct of_device *dev,
 		ehea_error("Invalid ibmebus device probed");
 		return -EINVAL;
 	}
+	mutex_lock(&ehea_fw_handles.lock);
 
 	adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
 	if (!adapter) {
@@ -3239,7 +3446,10 @@ out_kill_eq:
 
 out_free_ad:
 	kfree(adapter);
+
 out:
+	ehea_update_firmware_handles();
+	mutex_unlock(&ehea_fw_handles.lock);
 	return ret;
 }
 
@@ -3258,18 +3468,41 @@ static int __devexit ehea_remove(struct of_device *dev)
 
 	flush_scheduled_work();
 
+	mutex_lock(&ehea_fw_handles.lock);
+
 	ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
 	tasklet_kill(&adapter->neq_tasklet);
 
 	ehea_destroy_eq(adapter->neq);
 	ehea_remove_adapter_mr(adapter);
 	list_del(&adapter->list);
-
 	kfree(adapter);
 
+	ehea_update_firmware_handles();
+	mutex_unlock(&ehea_fw_handles.lock);
+
 	return 0;
 }
 
+void ehea_crash_handler(void)
+{
+	int i;
+
+	if (ehea_fw_handles.arr)
+		for (i = 0; i < ehea_fw_handles.num_entries; i++)
+			ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
+					     ehea_fw_handles.arr[i].fwh,
+					     FORCE_FREE);
+
+	if (ehea_bcmc_regs.arr)
+		for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
+			ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
+					      ehea_bcmc_regs.arr[i].port_id,
+					      ehea_bcmc_regs.arr[i].reg_type,
+					      ehea_bcmc_regs.arr[i].macaddr,
+					      0, H_DEREG_BCMC);
+}
+
 static int ehea_reboot_notifier(struct notifier_block *nb,
 				unsigned long action, void *unused)
 {
@@ -3330,7 +3563,11 @@ int __init ehea_module_init(void)
 
 
 	INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
-	sema_init(&dlpar_mem_lock, 1);
+	memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
+	memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
+
+	mutex_init(&ehea_fw_handles.lock);
+	mutex_init(&ehea_bcmc_regs.lock);
 
 	ret = check_module_parm();
 	if (ret)
@@ -3340,12 +3577,18 @@ int __init ehea_module_init(void)
 	if (ret)
 		goto out;
 
-	register_reboot_notifier(&ehea_reboot_nb);
+	ret = register_reboot_notifier(&ehea_reboot_nb);
+	if (ret)
+		ehea_info("failed registering reboot notifier");
+
+	ret = crash_shutdown_register(&ehea_crash_handler);
+	if (ret)
+		ehea_info("failed registering crash handler");
 
 	ret = ibmebus_register_driver(&ehea_driver);
 	if (ret) {
 		ehea_error("failed registering eHEA device driver on ebus");
-		goto out;
+		goto out2;
 	}
 
 	ret = driver_create_file(&ehea_driver.driver,
@@ -3353,21 +3596,33 @@ int __init ehea_module_init(void)
 	if (ret) {
 		ehea_error("failed to register capabilities attribute, ret=%d",
 			   ret);
-		unregister_reboot_notifier(&ehea_reboot_nb);
-		ibmebus_unregister_driver(&ehea_driver);
-		goto out;
+		goto out3;
 	}
 
+	return ret;
+
+out3:
+	ibmebus_unregister_driver(&ehea_driver);
+out2:
+	unregister_reboot_notifier(&ehea_reboot_nb);
+	crash_shutdown_unregister(&ehea_crash_handler);
 out:
 	return ret;
 }
 
 static void __exit ehea_module_exit(void)
 {
+	int ret;
+
 	flush_scheduled_work();
 	driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
 	ibmebus_unregister_driver(&ehea_driver);
 	unregister_reboot_notifier(&ehea_reboot_nb);
+	ret = crash_shutdown_unregister(&ehea_crash_handler);
+	if (ret)
+		ehea_info("failed unregistering crash handler");
+	kfree(ehea_fw_handles.arr);
+	kfree(ehea_bcmc_regs.arr);
 	ehea_destroy_busmap();
 }