From patchwork Sun Jul 11 14:51:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12369199 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 DAED3C07E96 for ; Sun, 11 Jul 2021 14:59:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE4C7611C1 for ; Sun, 11 Jul 2021 14:59:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234242AbhGKPCB (ORCPT ); Sun, 11 Jul 2021 11:02:01 -0400 Received: from out07.smtpout.orange.fr ([193.252.22.91]:53854 "EHLO out.smtpout.orange.fr" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234200AbhGKPB7 (ORCPT ); Sun, 11 Jul 2021 11:01:59 -0400 X-Greylist: delayed 451 seconds by postgrey-1.27 at vger.kernel.org; Sun, 11 Jul 2021 11:01:59 EDT Received: from localhost.localdomain ([86.243.172.93]) by mwinf5d67 with ME id Tqrb2500921Fzsu03qrbGm; Sun, 11 Jul 2021 16:51:39 +0200 X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sun, 11 Jul 2021 16:51:39 +0200 X-ME-IP: 86.243.172.93 From: Christophe JAILLET To: m.chetan.kumar@intel.com, linuxwwan@intel.com, loic.poulain@linaro.org, ryazanov.s.a@gmail.com, johannes@sipsolutions.net, 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] net: wwan: iosm: switch from 'pci_' to 'dma_' API Date: Sun, 11 Jul 2021 16:51:33 +0200 Message-Id: X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@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 'ipc_protocol_init()' GFP_KERNEL can be used because this flag is already used a few lines above and no lock is acquired in the between. When memory is allocated in 'ipc_protocol_msg_prepipe_open()' GFP_ATOMIC should be used because this flag is already used a few lines above. @@ @@ - 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 Reviewed-by: M Chetan Kumar --- If needed, see post from Christoph Hellwig on the kernel-janitors ML: https://marc.info/?l=kernel-janitors&m=158745678307186&w=4 When memory is allocated in 'ipc_protocol_msg_prepipe_open()', I think that GFP_KERNEL could be used, but I've not dug enough to be sure. So, better safe that sorry. --- drivers/net/wwan/iosm/iosm_ipc_protocol.c | 10 +++++----- drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c | 13 ++++++------- 2 files changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/net/wwan/iosm/iosm_ipc_protocol.c b/drivers/net/wwan/iosm/iosm_ipc_protocol.c index 834d8b146a94..63fc7012f09f 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_protocol.c +++ b/drivers/net/wwan/iosm/iosm_ipc_protocol.c @@ -239,9 +239,9 @@ struct iosm_protocol *ipc_protocol_init(struct iosm_imem *ipc_imem) ipc_protocol->old_msg_tail = 0; ipc_protocol->p_ap_shm = - pci_alloc_consistent(ipc_protocol->pcie->pci, - sizeof(*ipc_protocol->p_ap_shm), - &ipc_protocol->phy_ap_shm); + dma_alloc_coherent(&ipc_protocol->pcie->pci->dev, + sizeof(*ipc_protocol->p_ap_shm), + &ipc_protocol->phy_ap_shm, GFP_KERNEL); if (!ipc_protocol->p_ap_shm) { dev_err(ipc_protocol->dev, "pci shm alloc error"); @@ -275,8 +275,8 @@ struct iosm_protocol *ipc_protocol_init(struct iosm_imem *ipc_imem) void ipc_protocol_deinit(struct iosm_protocol *proto) { - pci_free_consistent(proto->pcie->pci, sizeof(*proto->p_ap_shm), - proto->p_ap_shm, proto->phy_ap_shm); + dma_free_coherent(&proto->pcie->pci->dev, sizeof(*proto->p_ap_shm), + proto->p_ap_shm, proto->phy_ap_shm); ipc_pm_deinit(proto); kfree(proto); diff --git a/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c b/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c index 91109e27efd3..a53ad97abb98 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c +++ b/drivers/net/wwan/iosm/iosm_ipc_protocol_ops.c @@ -74,9 +74,9 @@ static int ipc_protocol_msg_prepipe_open(struct iosm_protocol *ipc_protocol, return -ENOMEM; /* Allocate the transfer descriptors for the pipe. */ - tdr = pci_alloc_consistent(ipc_protocol->pcie->pci, - pipe->nr_of_entries * sizeof(*tdr), - &pipe->phy_tdr_start); + tdr = dma_alloc_coherent(&ipc_protocol->pcie->pci->dev, + pipe->nr_of_entries * sizeof(*tdr), + &pipe->phy_tdr_start, GFP_ATOMIC); if (!tdr) { kfree(skbr); dev_err(ipc_protocol->dev, "tdr alloc error"); @@ -492,10 +492,9 @@ void ipc_protocol_pipe_cleanup(struct iosm_protocol *ipc_protocol, /* Free and reset the td and skbuf circular buffers. kfree is save! */ if (pipe->tdr_start) { - pci_free_consistent(ipc_protocol->pcie->pci, - sizeof(*pipe->tdr_start) * - pipe->nr_of_entries, - pipe->tdr_start, pipe->phy_tdr_start); + dma_free_coherent(&ipc_protocol->pcie->pci->dev, + sizeof(*pipe->tdr_start) * pipe->nr_of_entries, + pipe->tdr_start, pipe->phy_tdr_start); pipe->tdr_start = NULL; }