From patchwork Tue Aug 4 20:19:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 262716 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28733C433E0 for ; Tue, 4 Aug 2020 20:19:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16BE3207FC for ; Tue, 4 Aug 2020 20:19:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727787AbgHDUTa (ORCPT ); Tue, 4 Aug 2020 16:19:30 -0400 Received: from smtp13.smtpout.orange.fr ([80.12.242.135]:48232 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727063AbgHDUT3 (ORCPT ); Tue, 4 Aug 2020 16:19:29 -0400 Received: from localhost.localdomain ([93.23.13.33]) by mwinf5d72 with ME id BYKS230060in9Tx03YKStB; Tue, 04 Aug 2020 22:19:27 +0200 X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Tue, 04 Aug 2020 22:19:27 +0200 X-ME-IP: 93.23.13.33 From: Christophe JAILLET To: kevin.curtis@farsite.co.uk, davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] farsync: switch from 'pci_' to 'dma_' API Date: Tue, 4 Aug 2020 22:19:24 +0200 Message-Id: <20200804201924.717142-1-christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'fst_add_one()', GFP_KERNEL can be used because it is a probe function and no lock is acquired. @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET --- If needed, see post from Christoph Hellwig on the kernel-janitors ML: https://marc.info/?l=kernel-janitors&m=158745678307186&w=4 --- drivers/net/wan/farsync.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c index 5ff249b76525..b50cf11d197d 100644 --- a/drivers/net/wan/farsync.c +++ b/drivers/net/wan/farsync.c @@ -2553,16 +2553,16 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent) * Allocate a dma buffer for transmit and receives */ card->rx_dma_handle_host = - pci_alloc_consistent(card->device, FST_MAX_MTU, - &card->rx_dma_handle_card); + dma_alloc_coherent(&card->device->dev, FST_MAX_MTU, + &card->rx_dma_handle_card, GFP_KERNEL); if (card->rx_dma_handle_host == NULL) { pr_err("Could not allocate rx dma buffer\n"); err = -ENOMEM; goto rx_dma_fail; } card->tx_dma_handle_host = - pci_alloc_consistent(card->device, FST_MAX_MTU, - &card->tx_dma_handle_card); + dma_alloc_coherent(&card->device->dev, FST_MAX_MTU, + &card->tx_dma_handle_card, GFP_KERNEL); if (card->tx_dma_handle_host == NULL) { pr_err("Could not allocate tx dma buffer\n"); err = -ENOMEM; @@ -2572,9 +2572,8 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; /* Success */ tx_dma_fail: - pci_free_consistent(card->device, FST_MAX_MTU, - card->rx_dma_handle_host, - card->rx_dma_handle_card); + dma_free_coherent(&card->device->dev, FST_MAX_MTU, + card->rx_dma_handle_host, card->rx_dma_handle_card); rx_dma_fail: fst_disable_intr(card); for (i = 0 ; i < card->nports ; i++) @@ -2625,12 +2624,12 @@ fst_remove_one(struct pci_dev *pdev) /* * Free dma buffers */ - pci_free_consistent(card->device, FST_MAX_MTU, - card->rx_dma_handle_host, - card->rx_dma_handle_card); - pci_free_consistent(card->device, FST_MAX_MTU, - card->tx_dma_handle_host, - card->tx_dma_handle_card); + dma_free_coherent(&card->device->dev, FST_MAX_MTU, + card->rx_dma_handle_host, + card->rx_dma_handle_card); + dma_free_coherent(&card->device->dev, FST_MAX_MTU, + card->tx_dma_handle_host, + card->tx_dma_handle_card); } fst_card_array[card->card_no] = NULL; }