From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dimitris Michailidis Subject: [PATCH 2/3] cxgb4: keep interrupts available when the ports are brought down Date: Tue, 18 May 2010 13:07:12 -0700 Message-ID: <1274213233-26309-2-git-send-email-dm@chelsio.com> References: <1274213233-26309-1-git-send-email-dm@chelsio.com> Cc: Dimitris Michailidis To: netdev@vger.kernel.org Return-path: Received: from stargate.chelsio.com ([67.207.112.58]:11342 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758204Ab0ERUHR (ORCPT ); Tue, 18 May 2010 16:07:17 -0400 Received: from maui.asicdesigners.com (maui.asicdesigners.com [10.192.180.15]) by stargate.chelsio.com (8.13.1/8.13.1) with SMTP id o4IK7EJN008159 for ; Tue, 18 May 2010 13:07:14 -0700 In-Reply-To: <1274213233-26309-1-git-send-email-dm@chelsio.com> Sender: netdev-owner@vger.kernel.org List-ID: The PF driver needs to remain alert while its ports are down to service requests or errors from virtual functions or FW so keep interrupts and queues available when the ports are brought down. The change makes open_device_map unnecessary so remove it. Signed-off-by: Dimitris Michailidis --- drivers/net/cxgb4/cxgb4.h | 1 - drivers/net/cxgb4/cxgb4_main.c | 49 ++++++++++++++++++---------------------- 2 files changed, 22 insertions(+), 28 deletions(-) diff --git a/drivers/net/cxgb4/cxgb4.h b/drivers/net/cxgb4/cxgb4.h index d3a5c34..dd1770e 100644 --- a/drivers/net/cxgb4/cxgb4.h +++ b/drivers/net/cxgb4/cxgb4.h @@ -477,7 +477,6 @@ struct adapter { struct pci_dev *pdev; struct device *pdev_dev; unsigned long registered_device_map; - unsigned long open_device_map; unsigned long flags; const char *name; diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c index 1f59971..87161ce 100644 --- a/drivers/net/cxgb4/cxgb4_main.c +++ b/drivers/net/cxgb4/cxgb4_main.c @@ -2433,23 +2433,17 @@ EXPORT_SYMBOL(cxgb4_unregister_uld); */ static int cxgb_up(struct adapter *adap) { - int err = 0; + int err; - if (!(adap->flags & FULL_INIT_DONE)) { - err = setup_sge_queues(adap); - if (err) - goto out; - err = setup_rss(adap); - if (err) { - t4_free_sge_resources(adap); - goto out; - } - if (adap->flags & USING_MSIX) - name_msix_vecs(adap); - adap->flags |= FULL_INIT_DONE; - } + err = setup_sge_queues(adap); + if (err) + goto out; + err = setup_rss(adap); + if (err) + goto freeq; if (adap->flags & USING_MSIX) { + name_msix_vecs(adap); err = request_irq(adap->msix_info[0].vec, t4_nondata_intr, 0, adap->msix_info[0].desc, adap); if (err) @@ -2470,11 +2464,14 @@ static int cxgb_up(struct adapter *adap) enable_rx(adap); t4_sge_start(adap); t4_intr_enable(adap); + adap->flags |= FULL_INIT_DONE; notify_ulds(adap, CXGB4_STATE_UP); out: return err; irq_err: dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err); + freeq: + t4_free_sge_resources(adap); goto out; } @@ -2490,6 +2487,9 @@ static void cxgb_down(struct adapter *adapter) } else free_irq(adapter->pdev->irq, adapter); quiesce_rx(adapter); + t4_sge_stop(adapter); + t4_free_sge_resources(adapter); + adapter->flags &= ~FULL_INIT_DONE; } /* @@ -2501,11 +2501,13 @@ static int cxgb_open(struct net_device *dev) struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; - if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) - return err; + if (!(adapter->flags & FULL_INIT_DONE)) { + err = cxgb_up(adapter); + if (err < 0) + return err; + } dev->real_num_tx_queues = pi->nqsets; - set_bit(pi->tx_chan, &adapter->open_device_map); link_start(dev); netif_tx_start_all_queues(dev); return 0; @@ -2513,19 +2515,12 @@ static int cxgb_open(struct net_device *dev) static int cxgb_close(struct net_device *dev) { - int ret; struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; netif_tx_stop_all_queues(dev); netif_carrier_off(dev); - ret = t4_enable_vi(adapter, 0, pi->viid, false, false); - - clear_bit(pi->tx_chan, &adapter->open_device_map); - - if (!adapter->open_device_map) - cxgb_down(adapter); - return 0; + return t4_enable_vi(adapter, 0, pi->viid, false, false); } static struct net_device_stats *cxgb_get_stats(struct net_device *dev) @@ -3360,8 +3355,8 @@ static void __devexit remove_one(struct pci_dev *pdev) if (adapter->debugfs_root) debugfs_remove_recursive(adapter->debugfs_root); - t4_sge_stop(adapter); - t4_free_sge_resources(adapter); + if (adapter->flags & FULL_INIT_DONE) + cxgb_down(adapter); t4_free_mem(adapter->l2t); t4_free_mem(adapter->tids.tid_tab); disable_msi(adapter); -- 1.5.4