From patchwork Mon Jul 1 11:53:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Justin Lai X-Patchwork-Id: 13717985 X-Patchwork-Delegate: kuba@kernel.org Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6016B1494CE; Mon, 1 Jul 2024 11:58:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719835136; cv=none; b=ZugrnPSLtx0XWELK4PHMXuSRuKRgSS6QnmjGIdrhxcnkHnY+Qo7N2KZGlAT3cV38VlzBx07Uc1YUUlexaTfpWBWWU75+IN39nj/bvhpujhY4HLFGeLOBk220/dZ8TqlQt+jlLdbpbptkV6/6xxshta4O+d9Il0PDpb8ER5w0KjI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719835136; c=relaxed/simple; bh=BLt7Roa3Pgux58ytu621b/nxwnLWSydXCxGWCHBmp04=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nbo+QfdFt3Zc97//S6lmYtsxsHdPkHpdmqe24qI+xErazeSZrb4Pe3pux8dAKvFfAmmLsUsgClwwsuRiejmYFRFv9YdKfxaw970DqVaDFwrLSU6IFUbZhvEATqTj+ocOYcn/kXQI4pBXRpJCU+IqqEH4mt+Ag3M9sO3qwNDJLdA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=realtek.com; spf=pass smtp.mailfrom=realtek.com; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=realtek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realtek.com X-SpamFilter-By: ArmorX SpamTrap 5.78 with qID 461BwW4w93806172, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36506.realtek.com.tw[172.21.6.27]) by rtits2.realtek.com.tw (8.15.2/3.02/5.92) with ESMTPS id 461BwW4w93806172 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 1 Jul 2024 19:58:32 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36506.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 1 Jul 2024 19:58:32 +0800 Received: from RTDOMAIN (172.21.210.160) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Mon, 1 Jul 2024 19:58:31 +0800 From: Justin Lai To: CC: , , , , , , , , , , , , "Justin Lai" Subject: [PATCH net-next v22 09/13] rtase: Implement pci_driver suspend and resume function Date: Mon, 1 Jul 2024 19:53:59 +0800 Message-ID: <20240701115403.7087-10-justinlai0215@realtek.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240701115403.7087-1-justinlai0215@realtek.com> References: <20240701115403.7087-1-justinlai0215@realtek.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: RTEXH36506.realtek.com.tw (172.21.6.27) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-Patchwork-Delegate: kuba@kernel.org Implement the pci_driver suspend function to enable the device to sleep, and implement the resume function to enable the device to resume operation. Signed-off-by: Justin Lai Reviewed-by: Simon Horman --- .../net/ethernet/realtek/rtase/rtase_main.c | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c index 4ea9c4d0c242..a4799311bd39 100755 --- a/drivers/net/ethernet/realtek/rtase/rtase_main.c +++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c @@ -2186,12 +2186,63 @@ static void rtase_shutdown(struct pci_dev *pdev) rtase_reset_interrupt(pdev, tp); } +static int rtase_suspend(struct device *device) +{ + struct net_device *dev = dev_get_drvdata(device); + + if (netif_running(dev)) { + netif_device_detach(dev); + rtase_hw_reset(dev); + } + + return 0; +} + +static int rtase_resume(struct device *device) +{ + struct net_device *dev = dev_get_drvdata(device); + struct rtase_private *tp = netdev_priv(dev); + int ret; + + /* restore last modified mac address */ + rtase_rar_set(tp, dev->dev_addr); + + if (!netif_running(dev)) + goto out; + + rtase_wait_for_quiescence(dev); + + rtase_tx_clear(tp); + rtase_rx_clear(tp); + + ret = rtase_init_ring(dev); + if (ret) { + netdev_err(dev, "unable to init ring\n"); + rtase_free_desc(tp); + return -ENOMEM; + } + + rtase_hw_config(dev); + /* always link, so start to transmit & receive */ + rtase_hw_start(dev); + + netif_device_attach(dev); +out: + + return 0; +} + +static const struct dev_pm_ops rtase_pm_ops = { + SYSTEM_SLEEP_PM_OPS(rtase_suspend, rtase_resume) +}; + static struct pci_driver rtase_pci_driver = { .name = KBUILD_MODNAME, .id_table = rtase_pci_tbl, .probe = rtase_init_one, .remove = rtase_remove_one, .shutdown = rtase_shutdown, + .driver.pm = pm_ptr(&rtase_pm_ops), }; module_pci_driver(rtase_pci_driver);