From patchwork Thu May 2 09:18:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Justin Lai X-Patchwork-Id: 13651484 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 0643A58228; Thu, 2 May 2024 09:20:34 +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=1714641636; cv=none; b=ErUt6m83RXvVuX+tkNCocFAi2n1//QIK3+kxihJbxXl+LJ7LEaGqx7j7L96pBzpaAMmMKCs/CMiqhz4KG4hVPqY7Cr4hi/t3VXYVDplrWh/7o7iPkG27qn05o9MN1Dsi9kMips0iKyuvAboDkUgsLf2t7ILALrQk8GpzFKe61TE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714641636; c=relaxed/simple; bh=ux8A61W4NYUYqc75gqtSy+WlkhW6+TPKbbLpywy10zs=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=hIRuNDHnjwsGSrRXNc6Pmny/XIirxkczHt1UO5NyeELOby4u3e/ffOSRTFOewmpUe/0qvLiRf6lL6M90kN31220GPuhpZV5D1m2TaCJRizHkDleeArm27LZ0eP8HvQkjmjTKB+9fItnHmGMazzINVgX4x+bFLvpaCKDBNFs8xBo= 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 4429KCMj82331157, 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 (8.15.2/2.95/5.92) with ESMTPS id 4429KCMj82331157 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 May 2024 17:20:12 +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 15.1.2507.35; Thu, 2 May 2024 17:20:12 +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; Thu, 2 May 2024 17:20:11 +0800 From: Justin Lai To: CC: , , , , , , , , , "Justin Lai" Subject: [PATCH net-next v17 04/13] rtase: Implement the interrupt routine and rtase_poll Date: Thu, 2 May 2024 17:18:38 +0800 Message-ID: <20240502091847.65181-5-justinlai0215@realtek.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240502091847.65181-1-justinlai0215@realtek.com> References: <20240502091847.65181-1-justinlai0215@realtek.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: RTEXH36505.realtek.com.tw (172.21.6.25) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-Patchwork-Delegate: kuba@kernel.org 1. Implement rtase_interrupt to handle txQ0/rxQ0, txQ4~txQ7 interrupts, and implement rtase_q_interrupt to handle txQ1/rxQ1, txQ2/rxQ2 and txQ3/rxQ3 interrupts. 2. Implement rtase_poll to call ring_handler to process the tx or rx packet of each ring. If the returned value is budget,it means that there is still work of a certain ring that has not yet been completed. Signed-off-by: Justin Lai --- .../net/ethernet/realtek/rtase/rtase_main.c | 89 +++++++++++++++++++ 1 file changed, 89 insertions(+) diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c index 709c0bb6d2e7..ab00811e1415 100644 --- a/drivers/net/ethernet/realtek/rtase/rtase_main.c +++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c @@ -584,6 +584,76 @@ static void rtase_hw_start(const struct net_device *dev) rtase_enable_hw_interrupt(tp); } +/* the interrupt handler does RXQ0 and TXQ0, TXQ4~7 interrutp status + */ +static irqreturn_t rtase_interrupt(int irq, void *dev_instance) +{ + const struct rtase_private *tp; + struct rtase_int_vector *ivec; + u32 status; + + ivec = dev_instance; + tp = ivec->tp; + status = rtase_r32(tp, ivec->isr_addr); + + rtase_w32(tp, ivec->imr_addr, 0x0); + rtase_w32(tp, ivec->isr_addr, status & ~RTASE_FOVW); + + if (napi_schedule_prep(&ivec->napi)) + __napi_schedule(&ivec->napi); + + return IRQ_HANDLED; +} + +/* the interrupt handler does RXQ1&TXQ1 or RXQ2&TXQ2 or RXQ3&TXQ3 interrupt + * status according to interrupt vector + */ +static irqreturn_t rtase_q_interrupt(int irq, void *dev_instance) +{ + const struct rtase_private *tp; + struct rtase_int_vector *ivec; + u16 status; + + ivec = dev_instance; + tp = ivec->tp; + status = rtase_r16(tp, ivec->isr_addr); + + rtase_w16(tp, ivec->imr_addr, 0x0); + rtase_w16(tp, ivec->isr_addr, status); + + if (napi_schedule_prep(&ivec->napi)) + __napi_schedule(&ivec->napi); + + return IRQ_HANDLED; +} + +static int rtase_poll(struct napi_struct *napi, int budget) +{ + const struct rtase_int_vector *ivec; + const struct rtase_private *tp; + struct rtase_ring *ring; + int total_workdone = 0; + + ivec = container_of(napi, struct rtase_int_vector, napi); + tp = ivec->tp; + + list_for_each_entry(ring, &ivec->ring_list, ring_entry) { + total_workdone += ring->ring_handler(ring, budget); + } + + if (total_workdone >= budget) + return budget; + + if (napi_complete_done(napi, total_workdone)) { + if (!ivec->index) + rtase_w32(tp, ivec->imr_addr, ivec->imr); + else + rtase_w16(tp, ivec->imr_addr, ivec->imr); + } + + return total_workdone; +} + static int rtase_open(struct net_device *dev) { struct rtase_private *tp = netdev_priv(dev); @@ -727,9 +797,28 @@ static void rtase_rar_set(const struct rtase_private *tp, const u8 *addr) rtase_w16(tp, RTASE_LBK_CTRL, RTASE_LBK_ATLD | RTASE_LBK_CLR); } +#ifdef CONFIG_NET_POLL_CONTROLLER +/* Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void rtase_netpoll(struct net_device *dev) +{ + const struct rtase_private *tp = netdev_priv(dev); + const struct pci_dev *pdev = tp->pdev; + + disable_irq(pdev->irq); + rtase_interrupt(pdev->irq, dev); + enable_irq(pdev->irq); +} +#endif + static const struct net_device_ops rtase_netdev_ops = { .ndo_open = rtase_open, .ndo_stop = rtase_close, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = rtase_netpoll, +#endif }; static void rtase_get_mac_address(struct net_device *dev)