From patchwork Thu Aug 20 08:46:13 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taku Izumi X-Patchwork-Id: 7042341 Return-Path: X-Original-To: patchwork-platform-driver-x86@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id F2C799F344 for ; Thu, 20 Aug 2015 08:53:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0C6FD20502 for ; Thu, 20 Aug 2015 08:53:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D13020431 for ; Thu, 20 Aug 2015 08:53:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753043AbbHTIxp (ORCPT ); Thu, 20 Aug 2015 04:53:45 -0400 Received: from mgwkm02.jp.fujitsu.com ([202.219.69.169]:22695 "EHLO mgwkm02.jp.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752700AbbHTIvf (ORCPT ); Thu, 20 Aug 2015 04:51:35 -0400 Received: from kw-mxoi1.gw.nic.fujitsu.com (unknown [192.168.231.131]) by mgwkm02.jp.fujitsu.com with smtp id 7329_436b_38c944b0_1d15_42ab_a398_16a40bbbaa4b; Thu, 20 Aug 2015 17:51:33 +0900 Received: from m3051.s.css.fujitsu.com (m3051.s.css.fujitsu.com [10.134.21.209]) by kw-mxoi1.gw.nic.fujitsu.com (Postfix) with ESMTP id E1FBCAC0319; Thu, 20 Aug 2015 17:51:32 +0900 (JST) Received: from localhost.localdomain (unknown [10.124.196.197]) by m3051.s.css.fujitsu.com (Postfix) with ESMTP id 8DD43EA; Thu, 20 Aug 2015 17:51:32 +0900 (JST) From: Taku Izumi To: netdev@vger.kernel.org, davem@davemloft.net Cc: platform-driver-x86@vger.kernel.org, dvhart@infradead.org, rkhan@redhat.com, alexander.h.duyck@redhat.com, linux-acpi@vger.kernel.org, joe@perches.com, sergei.shtylyov@cogentembedded.com, stephen@networkplumber.org, yasu.isimatu@gmail.com, Taku Izumi Subject: [PATCH v2.2 09/22] fjes: raise_intr_rxdata_task Date: Thu, 20 Aug 2015 17:46:13 +0900 Message-Id: <1440060386-13189-9-git-send-email-izumi.taku@jp.fujitsu.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440060386-13189-1-git-send-email-izumi.taku@jp.fujitsu.com> References: <1440060306-13040-1-git-send-email-izumi.taku@jp.fujitsu.com> <1440060386-13189-1-git-send-email-izumi.taku@jp.fujitsu.com> X-TM-AS-MML: disable Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch add raise_intr_rxdata_task. Extended Socket Network Device is shared memory based, so someone's transmission denotes other's reception. In order to notify receivers, sender has to raise interruption of receivers. raise_intr_rxdata_task does this work. Signed-off-by: Taku Izumi --- drivers/net/fjes/fjes.h | 4 +++ drivers/net/fjes/fjes_main.c | 64 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/drivers/net/fjes/fjes.h b/drivers/net/fjes/fjes.h index 7af4304..8e9899e 100644 --- a/drivers/net/fjes/fjes.h +++ b/drivers/net/fjes/fjes.h @@ -50,6 +50,10 @@ struct fjes_adapter { bool irq_registered; + struct workqueue_struct *txrx_wq; + + struct work_struct raise_intr_rxdata_task; + struct fjes_hw hw; }; diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index be14e66..8d67097 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -52,6 +52,7 @@ static int fjes_close(struct net_device *); static int fjes_setup_resources(struct fjes_adapter *); static void fjes_free_resources(struct fjes_adapter *); static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); +static void fjes_raise_intr_rxdata_task(struct work_struct *); static irqreturn_t fjes_intr(int, void*); static int fjes_acpi_add(struct acpi_device *); @@ -276,6 +277,8 @@ static int fjes_close(struct net_device *netdev) fjes_free_irq(adapter); + cancel_work_sync(&adapter->raise_intr_rxdata_task); + fjes_hw_wait_epstop(hw); fjes_free_resources(adapter); @@ -404,6 +407,55 @@ static void fjes_free_resources(struct fjes_adapter *adapter) } } +static void fjes_raise_intr_rxdata_task(struct work_struct *work) +{ + struct fjes_adapter *adapter = container_of(work, + struct fjes_adapter, raise_intr_rxdata_task); + struct fjes_hw *hw = &adapter->hw; + int epid; + int max_epid, my_epid; + enum ep_partner_status pstatus; + + my_epid = hw->my_epid; + max_epid = hw->max_epid; + + for (epid = 0; epid < max_epid; epid++) + hw->ep_shm_info[epid].tx_status_work = 0; + + for (epid = 0; epid < max_epid; epid++) { + if (epid == my_epid) + continue; + + pstatus = fjes_hw_get_partner_ep_status(hw, epid); + if (pstatus == EP_PARTNER_SHARED) { + hw->ep_shm_info[epid].tx_status_work = + hw->ep_shm_info[epid].tx.info->v1i.tx_status; + + if (hw->ep_shm_info[epid].tx_status_work == + FJES_TX_DELAY_SEND_PENDING) { + hw->ep_shm_info[epid].tx.info->v1i.tx_status = + FJES_TX_DELAY_SEND_NONE; + } + } + } + + for (epid = 0; epid < max_epid; epid++) { + if (epid == my_epid) + continue; + + pstatus = fjes_hw_get_partner_ep_status(hw, epid); + if ((hw->ep_shm_info[epid].tx_status_work == + FJES_TX_DELAY_SEND_PENDING) && + (pstatus == EP_PARTNER_SHARED) && + !(hw->ep_shm_info[epid].rx.info->v1i.rx_status)) { + fjes_hw_raise_interrupt(hw, epid, + REG_ICTL_MASK_RX_DATA); + } + } + + usleep_range(500, 1000); +} + static int fjes_tx_send(struct fjes_adapter *adapter, int dest, void *data, size_t len) { @@ -416,6 +468,9 @@ static int fjes_tx_send(struct fjes_adapter *adapter, int dest, adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = FJES_TX_DELAY_SEND_PENDING; + if (!work_pending(&adapter->raise_intr_rxdata_task)) + queue_work(adapter->txrx_wq, + &adapter->raise_intr_rxdata_task); retval = 0; return retval; @@ -629,6 +684,11 @@ static int fjes_probe(struct platform_device *plat_dev) adapter->force_reset = false; adapter->open_guard = false; + adapter->txrx_wq = create_workqueue(DRV_NAME "/txrx"); + + INIT_WORK(&adapter->raise_intr_rxdata_task, + fjes_raise_intr_rxdata_task); + res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); hw->hw_res.start = res->start; hw->hw_res.size = res->end - res->start + 1; @@ -669,6 +729,10 @@ static int fjes_remove(struct platform_device *plat_dev) struct fjes_adapter *adapter = netdev_priv(netdev); struct fjes_hw *hw = &adapter->hw; + cancel_work_sync(&adapter->raise_intr_rxdata_task); + if (adapter->txrx_wq) + destroy_workqueue(adapter->txrx_wq); + unregister_netdev(netdev); fjes_hw_exit(hw);