X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fehea%2Fehea_main.c;h=d1b6d4e7495d1dee77247c74e1aa061b23e89026;hb=2d4b3f37ded8998a362c8d0b4be02f583dd9a002;hp=f460b623c0771356acca11780e06b62efac2e0c4;hpb=7d939fbdfee49e5c06bd27214d25f726fb87a25a;p=linux-2.6-omap-h63xx.git diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index f460b623c07..d1b6d4e7495 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -35,7 +35,9 @@ #include #include #include +#include #include +#include #include @@ -99,7 +101,7 @@ static int port_name_cnt; static LIST_HEAD(adapter_list); u64 ehea_driver_flags; struct work_struct ehea_rereg_mr_task; -struct semaphore dlpar_mem_lock; +static DEFINE_MUTEX(dlpar_mem_lock); struct ehea_fw_handle_array ehea_fw_handles; struct ehea_bcmc_reg_array ehea_bcmc_regs; @@ -1761,7 +1763,7 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa) memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); - down(&ehea_bcmc_regs.lock); + mutex_lock(&ehea_bcmc_regs.lock); /* Deregister old MAC in pHYP */ ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); @@ -1779,7 +1781,7 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa) out_upregs: ehea_update_bcmc_registrations(); - up(&ehea_bcmc_regs.lock); + mutex_unlock(&ehea_bcmc_regs.lock); out_free: kfree(cb0); out: @@ -1941,7 +1943,7 @@ static void ehea_set_multicast_list(struct net_device *dev) } ehea_promiscuous(dev, 0); - down(&ehea_bcmc_regs.lock); + mutex_lock(&ehea_bcmc_regs.lock); if (dev->flags & IFF_ALLMULTI) { ehea_allmulti(dev, 1); @@ -1972,7 +1974,7 @@ static void ehea_set_multicast_list(struct net_device *dev) } out: ehea_update_bcmc_registrations(); - up(&ehea_bcmc_regs.lock); + mutex_unlock(&ehea_bcmc_regs.lock); return; } @@ -2455,7 +2457,7 @@ static int ehea_up(struct net_device *dev) if (port->state == EHEA_PORT_UP) return 0; - down(&ehea_fw_handles.lock); + mutex_lock(&ehea_fw_handles.lock); ret = ehea_port_res_setup(port, port->num_def_qps, port->num_add_tx_qps); @@ -2493,7 +2495,7 @@ static int ehea_up(struct net_device *dev) } } - down(&ehea_bcmc_regs.lock); + mutex_lock(&ehea_bcmc_regs.lock); ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); if (ret) { @@ -2516,10 +2518,10 @@ out: ehea_info("Failed starting %s. ret=%i", dev->name, ret); ehea_update_bcmc_registrations(); - up(&ehea_bcmc_regs.lock); + mutex_unlock(&ehea_bcmc_regs.lock); ehea_update_firmware_handles(); - up(&ehea_fw_handles.lock); + mutex_unlock(&ehea_fw_handles.lock); return ret; } @@ -2545,7 +2547,7 @@ 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); @@ -2556,7 +2558,7 @@ static int ehea_open(struct net_device *dev) netif_start_queue(dev); } - up(&port->port_lock); + mutex_unlock(&port->port_lock); return ret; } @@ -2569,18 +2571,18 @@ static int ehea_down(struct net_device *dev) if (port->state == EHEA_PORT_DOWN) return 0; - down(&ehea_bcmc_regs.lock); + 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); - down(&ehea_fw_handles.lock); - port->state = EHEA_PORT_DOWN; ehea_update_bcmc_registrations(); - up(&ehea_bcmc_regs.lock); + mutex_unlock(&ehea_bcmc_regs.lock); ret = ehea_clean_all_portres(port); if (ret) @@ -2588,7 +2590,7 @@ static int ehea_down(struct net_device *dev) dev->name, ret); ehea_update_firmware_handles(); - up(&ehea_fw_handles.lock); + mutex_unlock(&ehea_fw_handles.lock); return ret; } @@ -2602,15 +2604,15 @@ 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; } -void ehea_purge_sq(struct ehea_qp *orig_qp) +static void ehea_purge_sq(struct ehea_qp *orig_qp) { struct ehea_qp qp = *orig_qp; struct ehea_qp_init_attr *init_attr = &qp.init_attr; @@ -2624,7 +2626,7 @@ void ehea_purge_sq(struct ehea_qp *orig_qp) } } -void ehea_flush_sq(struct ehea_port *port) +static void ehea_flush_sq(struct ehea_port *port) { int i; @@ -2820,7 +2822,7 @@ 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); @@ -2840,7 +2842,7 @@ static void ehea_reset_port(struct work_struct *work) netif_wake_queue(dev); out: - up(&port->port_lock); + mutex_unlock(&port->port_lock); return; } @@ -2849,7 +2851,7 @@ 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) @@ -2857,22 +2859,24 @@ 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); - ehea_flush_sq(port); - 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); } } @@ -2912,17 +2916,17 @@ 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; @@ -3083,7 +3087,7 @@ 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; @@ -3362,7 +3366,7 @@ static int __devinit ehea_probe_adapter(struct of_device *dev, ehea_error("Invalid ibmebus device probed"); return -EINVAL; } - down(&ehea_fw_handles.lock); + mutex_lock(&ehea_fw_handles.lock); adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); if (!adapter) { @@ -3446,7 +3450,7 @@ out_free_ad: out: ehea_update_firmware_handles(); - up(&ehea_fw_handles.lock); + mutex_unlock(&ehea_fw_handles.lock); return ret; } @@ -3465,7 +3469,7 @@ static int __devexit ehea_remove(struct of_device *dev) flush_scheduled_work(); - down(&ehea_fw_handles.lock); + mutex_lock(&ehea_fw_handles.lock); ibmebus_free_irq(adapter->neq->attr.ist1, adapter); tasklet_kill(&adapter->neq_tasklet); @@ -3476,7 +3480,7 @@ static int __devexit ehea_remove(struct of_device *dev) kfree(adapter); ehea_update_firmware_handles(); - up(&ehea_fw_handles.lock); + mutex_unlock(&ehea_fw_handles.lock); return 0; } @@ -3500,6 +3504,24 @@ void ehea_crash_handler(void) 0, H_DEREG_BCMC); } +static int ehea_mem_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + switch (action) { + case MEM_OFFLINE: + ehea_info("memory has been removed"); + ehea_rereg_mrs(NULL); + break; + default: + break; + } + return NOTIFY_OK; +} + +static struct notifier_block ehea_mem_nb = { + .notifier_call = ehea_mem_notifier, +}; + static int ehea_reboot_notifier(struct notifier_block *nb, unsigned long action, void *unused) { @@ -3563,9 +3585,8 @@ int __init ehea_module_init(void) memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles)); memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs)); - sema_init(&dlpar_mem_lock, 1); - sema_init(&ehea_fw_handles.lock, 1); - sema_init(&ehea_bcmc_regs.lock, 1); + mutex_init(&ehea_fw_handles.lock); + mutex_init(&ehea_bcmc_regs.lock); ret = check_module_parm(); if (ret) @@ -3579,6 +3600,10 @@ int __init ehea_module_init(void) if (ret) ehea_info("failed registering reboot notifier"); + ret = register_memory_notifier(&ehea_mem_nb); + if (ret) + ehea_info("failed registering memory remove notifier"); + ret = crash_shutdown_register(&ehea_crash_handler); if (ret) ehea_info("failed registering crash handler"); @@ -3602,6 +3627,7 @@ int __init ehea_module_init(void) out3: ibmebus_unregister_driver(&ehea_driver); out2: + unregister_memory_notifier(&ehea_mem_nb); unregister_reboot_notifier(&ehea_reboot_nb); crash_shutdown_unregister(&ehea_crash_handler); out: @@ -3619,6 +3645,7 @@ static void __exit ehea_module_exit(void) ret = crash_shutdown_unregister(&ehea_crash_handler); if (ret) ehea_info("failed unregistering crash handler"); + unregister_memory_notifier(&ehea_mem_nb); kfree(ehea_fw_handles.arr); kfree(ehea_bcmc_regs.arr); ehea_destroy_busmap();