From patchwork Sun Nov 3 10:34:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11224313 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 22F611515 for ; Sun, 3 Nov 2019 10:35:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09AF6214D8 for ; Sun, 3 Nov 2019 10:35:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727613AbfKCKfI (ORCPT ); Sun, 3 Nov 2019 05:35:08 -0500 Received: from mx2.suse.de ([195.135.220.15]:56864 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726408AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 3CAFAB13E; Sun, 3 Nov 2019 10:35:04 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , "David S. Miller" , linux-mips@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christoph Hellwig Subject: [net v2 1/4] net: sgi: ioc3-eth: don't abuse dma_direct_* calls Date: Sun, 3 Nov 2019 11:34:30 +0100 Message-Id: <20191103103433.26826-1-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.16.4 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Christoph Hellwig dma_direct_ is a low-level API that must never be used by drivers directly. Switch to use the proper DMA API instead. Change in v2: - ensure that tx ring is 16kB aligned Fixes: ed870f6a7aa2 ("net: sgi: ioc3-eth: use dma-direct for dma allocations") Signed-off-by: Christoph Hellwig --- drivers/net/ethernet/sgi/ioc3-eth.c | 33 +++++++++++++++++---------------- 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index deb636d653f3..4879dedf1f60 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -48,7 +48,7 @@ #include #include #include -#include +#include #include @@ -89,6 +89,7 @@ struct ioc3_private { struct device *dma_dev; u32 *ssram; unsigned long *rxr; /* pointer to receiver ring */ + void *tx_ring; struct ioc3_etxd *txr; dma_addr_t rxr_dma; dma_addr_t txr_dma; @@ -1242,8 +1243,8 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) ioc3_stop(ip); /* Allocate rx ring. 4kb = 512 entries, must be 4kb aligned */ - ip->rxr = dma_direct_alloc_pages(ip->dma_dev, RX_RING_SIZE, - &ip->rxr_dma, GFP_ATOMIC, 0); + ip->rxr = dma_alloc_coherent(ip->dma_dev, RX_RING_SIZE, &ip->rxr_dma, + GFP_ATOMIC); if (!ip->rxr) { pr_err("ioc3-eth: rx ring allocation failed\n"); err = -ENOMEM; @@ -1251,14 +1252,16 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } /* Allocate tx rings. 16kb = 128 bufs, must be 16kb aligned */ - ip->txr = dma_direct_alloc_pages(ip->dma_dev, TX_RING_SIZE, - &ip->txr_dma, - GFP_KERNEL | __GFP_ZERO, 0); - if (!ip->txr) { + ip->tx_ring = dma_alloc_coherent(ip->dma_dev, TX_RING_SIZE + SZ_16K - 1, + &ip->txr_dma, GFP_KERNEL | __GFP_ZERO); + if (!ip->tx_ring) { pr_err("ioc3-eth: tx ring allocation failed\n"); err = -ENOMEM; goto out_stop; } + /* Align TX ring */ + ip->txr = PTR_ALIGN(ip->tx_ring, SZ_16K); + ip->txr_dma = ALIGN(ip->txr_dma, SZ_16K); ioc3_init(dev); @@ -1313,11 +1316,11 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) out_stop: del_timer_sync(&ip->ioc3_timer); if (ip->rxr) - dma_direct_free_pages(ip->dma_dev, RX_RING_SIZE, ip->rxr, - ip->rxr_dma, 0); - if (ip->txr) - dma_direct_free_pages(ip->dma_dev, TX_RING_SIZE, ip->txr, - ip->txr_dma, 0); + dma_free_coherent(ip->dma_dev, RX_RING_SIZE, ip->rxr, + ip->rxr_dma); + if (ip->tx_ring) + dma_free_coherent(ip->dma_dev, TX_RING_SIZE, ip->tx_ring, + ip->txr_dma); out_res: pci_release_regions(pdev); out_free: @@ -1335,10 +1338,8 @@ static void ioc3_remove_one(struct pci_dev *pdev) struct net_device *dev = pci_get_drvdata(pdev); struct ioc3_private *ip = netdev_priv(dev); - dma_direct_free_pages(ip->dma_dev, RX_RING_SIZE, ip->rxr, - ip->rxr_dma, 0); - dma_direct_free_pages(ip->dma_dev, TX_RING_SIZE, ip->txr, - ip->txr_dma, 0); + dma_free_coherent(ip->dma_dev, RX_RING_SIZE, ip->rxr, ip->rxr_dma); + dma_free_coherent(ip->dma_dev, TX_RING_SIZE, ip->tx_ring, ip->txr_dma); unregister_netdev(dev); del_timer_sync(&ip->ioc3_timer); From patchwork Sun Nov 3 10:34:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11224315 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 075521515 for ; Sun, 3 Nov 2019 10:35:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E36C52190F for ; Sun, 3 Nov 2019 10:35:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727537AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 Received: from mx2.suse.de ([195.135.220.15]:56866 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727156AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 3C42FB114; Sun, 3 Nov 2019 10:35:04 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , "David S. Miller" , linux-mips@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christoph Hellwig Subject: [net v2 2/4] net: sgi: ioc3-eth: fix usage of GFP_* flags Date: Sun, 3 Nov 2019 11:34:31 +0100 Message-Id: <20191103103433.26826-2-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191103103433.26826-1-tbogendoerfer@suse.de> References: <20191103103433.26826-1-tbogendoerfer@suse.de> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Christoph Hellwig dma_alloc_coherent always zeroes memory, there is no need for __GFP_ZERO. Also doing a GFP_ATOMIC allocation just before a GFP_KERNEL one is clearly bogus. Fixes: ed870f6a7aa2 ("net: sgi: ioc3-eth: use dma-direct for dma allocations") Signed-off-by: Christoph Hellwig --- drivers/net/ethernet/sgi/ioc3-eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index 4879dedf1f60..d1546f04d1fd 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -1244,7 +1244,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* Allocate rx ring. 4kb = 512 entries, must be 4kb aligned */ ip->rxr = dma_alloc_coherent(ip->dma_dev, RX_RING_SIZE, &ip->rxr_dma, - GFP_ATOMIC); + GFP_KERNEL); if (!ip->rxr) { pr_err("ioc3-eth: rx ring allocation failed\n"); err = -ENOMEM; @@ -1253,7 +1253,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* Allocate tx rings. 16kb = 128 bufs, must be 16kb aligned */ ip->tx_ring = dma_alloc_coherent(ip->dma_dev, TX_RING_SIZE + SZ_16K - 1, - &ip->txr_dma, GFP_KERNEL | __GFP_ZERO); + &ip->txr_dma, GFP_KERNEL); if (!ip->tx_ring) { pr_err("ioc3-eth: tx ring allocation failed\n"); err = -ENOMEM; From patchwork Sun Nov 3 10:34:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11224311 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D9CF8913 for ; Sun, 3 Nov 2019 10:35:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B54EA2080F for ; Sun, 3 Nov 2019 10:35:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727444AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 Received: from mx2.suse.de ([195.135.220.15]:56870 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727379AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 64572B16C; Sun, 3 Nov 2019 10:35:04 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , "David S. Miller" , linux-mips@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christoph Hellwig Subject: [net v2 3/4] net: sgi: ioc3-eth: simplify setting the DMA mask Date: Sun, 3 Nov 2019 11:34:32 +0100 Message-Id: <20191103103433.26826-3-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191103103433.26826-1-tbogendoerfer@suse.de> References: <20191103103433.26826-1-tbogendoerfer@suse.de> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Christoph Hellwig There is no need to fall back to a lower mask these days, the DMA mask just communictes the hardware supported features. Signed-off-by: Christoph Hellwig --- drivers/net/ethernet/sgi/ioc3-eth.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index d1546f04d1fd..83abc8a13508 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -1174,26 +1174,14 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct ioc3 *ioc3; unsigned long ioc3_base, ioc3_size; u32 vendor, model, rev; - int err, pci_using_dac; + int err; /* Configure DMA attributes. */ - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) { - pci_using_dac = 1; - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (err < 0) { - pr_err("%s: Unable to obtain 64 bit DMA for consistent allocations\n", - pci_name(pdev)); - goto out; - } - } else { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - pr_err("%s: No usable DMA configuration, aborting.\n", - pci_name(pdev)); - goto out; - } - pci_using_dac = 0; + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + pr_err("%s: No usable DMA configuration, aborting.\n", + pci_name(pdev)); + goto out; } if (pci_enable_device(pdev)) @@ -1205,8 +1193,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto out_disable; } - if (pci_using_dac) - dev->features |= NETIF_F_HIGHDMA; + dev->features |= NETIF_F_HIGHDMA; err = pci_request_regions(pdev, "ioc3"); if (err) From patchwork Sun Nov 3 10:34:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11224317 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B337F913 for ; Sun, 3 Nov 2019 10:35:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C7F621744 for ; Sun, 3 Nov 2019 10:35:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727444AbfKCKfV (ORCPT ); Sun, 3 Nov 2019 05:35:21 -0500 Received: from mx2.suse.de ([195.135.220.15]:56882 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727380AbfKCKfG (ORCPT ); Sun, 3 Nov 2019 05:35:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 9708CB183; Sun, 3 Nov 2019 10:35:04 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , "David S. Miller" , linux-mips@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christoph Hellwig Subject: [net v2 4/4] net: sgi: ioc3-eth: fix setting NETIF_F_HIGHDMA Date: Sun, 3 Nov 2019 11:34:33 +0100 Message-Id: <20191103103433.26826-4-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191103103433.26826-1-tbogendoerfer@suse.de> References: <20191103103433.26826-1-tbogendoerfer@suse.de> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Christoph Hellwig Set NETIF_F_HIGHDMA together with the NETIF_F_IP_CSUM flag insted of letting the second assignment overwrite it. Probably doesn't matter in practice as none of the systems a IOC3 is usually found in has highmem to start with. Signed-off-by: Christoph Hellwig --- drivers/net/ethernet/sgi/ioc3-eth.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index 83abc8a13508..d242906ae233 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -1193,8 +1193,6 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto out_disable; } - dev->features |= NETIF_F_HIGHDMA; - err = pci_request_regions(pdev, "ioc3"); if (err) goto out_free; @@ -1278,7 +1276,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) dev->netdev_ops = &ioc3_netdev_ops; dev->ethtool_ops = &ioc3_ethtool_ops; dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; - dev->features = NETIF_F_IP_CSUM; + dev->features = NETIF_F_IP_CSUM | NETIF_F_HIGHDMA; sw_physid1 = ioc3_mdio_read(dev, ip->mii.phy_id, MII_PHYSID1); sw_physid2 = ioc3_mdio_read(dev, ip->mii.phy_id, MII_PHYSID2);