From patchwork Sun Mar 28 08:08:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12168881 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,URIBL_BLOCKED,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 55714C433E2 for ; Sun, 28 Mar 2021 08:09:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 242E861971 for ; Sun, 28 Mar 2021 08:09:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231228AbhC1IIp (ORCPT ); Sun, 28 Mar 2021 04:08:45 -0400 Received: from out05.smtpout.orange.fr ([193.252.22.214]:49532 "EHLO out.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230180AbhC1II0 (ORCPT ); Sun, 28 Mar 2021 04:08:26 -0400 Received: from localhost.localdomain ([90.126.11.170]) by mwinf5d19 with ME id lk8M2400E3g7mfN03k8NsB; Sun, 28 Mar 2021 10:08:24 +0200 X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sun, 28 Mar 2021 10:08:24 +0200 X-ME-IP: 90.126.11.170 From: Christophe JAILLET To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl, m.szyprowski@samsung.com, brad@nextdimension.cc, vaibhavgupta40@gmail.com, daniel.lee.kruse@protonmail.com, tglx@linutronix.de Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] media: cx23885: switch from 'pci_' to 'dma_' API Date: Sun, 28 Mar 2021 10:08:19 +0200 Message-Id: <7870058f8c345153e53a9ceef1c49c1f313c3c3f.1616918733.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@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 'cx23885_risc_buffer()' GFP_KERNEL can be used because this function is only called from a vb2_ops buf_prepare function. The call chain is: cx23885_video_qops.buf_prepare (cx23885-video.c) --> buffer_prepare (cx23885-video.c) --> cx23885_risc_buffer When memory is allocated in 'cx23885_risc_databuffer()' GFP_KERNEL can be used because this function is only called from a function that already uses GFP_KERNEL or from a vb2_ops buf_prepare function. The call chains are: snd_cx23885_hw_params (cx23885-alsa.c) --> use GFP_KERNEL --> cx23885_risc_databuffer cx23885_qops.buffer_prepare (cx23885-417.c) or dvb_qops.buffer_prepare (cx23885-dvb.c) --> cx23885_buf_prepare --> cx23885_risc_databuffer When memory is allocated in 'cx23885_risc_vbibuffer()' GFP_KERNEL can be used because this function is only called from a vb2_ops buf_prepare function. The call chains are: cx23885_vbi_qops.buffer_prepare (cx23885-vbi.c) --> cx23885_risc_vbibuffer @@ @@ - 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/media/pci/cx23885/cx23885-alsa.c | 2 +- drivers/media/pci/cx23885/cx23885-core.c | 13 ++++++++----- 2 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/media/pci/cx23885/cx23885-alsa.c b/drivers/media/pci/cx23885/cx23885-alsa.c index 13689c5dd47f..ab14d35214aa 100644 --- a/drivers/media/pci/cx23885/cx23885-alsa.c +++ b/drivers/media/pci/cx23885/cx23885-alsa.c @@ -266,7 +266,7 @@ static int dsp_buffer_free(struct cx23885_audio_dev *chip) cx23885_alsa_dma_unmap(chip); cx23885_alsa_dma_free(chip->buf); risc = &chip->buf->risc; - pci_free_consistent(chip->pci, risc->size, risc->cpu, risc->dma); + dma_free_coherent(&chip->pci->dev, risc->size, risc->cpu, risc->dma); kfree(chip->buf); chip->buf = NULL; diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c index d0ca260ecf70..f8f2ff3b00c3 100644 --- a/drivers/media/pci/cx23885/cx23885-core.c +++ b/drivers/media/pci/cx23885/cx23885-core.c @@ -1218,7 +1218,8 @@ int cx23885_risc_buffer(struct pci_dev *pci, struct cx23885_riscmem *risc, / PAGE_SIZE + lines); instructions += 5; risc->size = instructions * 12; - risc->cpu = pci_alloc_consistent(pci, risc->size, &risc->dma); + risc->cpu = dma_alloc_coherent(&pci->dev, risc->size, &risc->dma, + GFP_KERNEL); if (risc->cpu == NULL) return -ENOMEM; @@ -1255,7 +1256,8 @@ int cx23885_risc_databuffer(struct pci_dev *pci, instructions += 4; risc->size = instructions * 12; - risc->cpu = pci_alloc_consistent(pci, risc->size, &risc->dma); + risc->cpu = dma_alloc_coherent(&pci->dev, risc->size, &risc->dma, + GFP_KERNEL); if (risc->cpu == NULL) return -ENOMEM; @@ -1293,7 +1295,8 @@ int cx23885_risc_vbibuffer(struct pci_dev *pci, struct cx23885_riscmem *risc, / PAGE_SIZE + lines); instructions += 5; risc->size = instructions * 12; - risc->cpu = pci_alloc_consistent(pci, risc->size, &risc->dma); + risc->cpu = dma_alloc_coherent(&pci->dev, risc->size, &risc->dma, + GFP_KERNEL); if (risc->cpu == NULL) return -ENOMEM; /* write risc instructions */ @@ -1322,7 +1325,7 @@ void cx23885_free_buffer(struct cx23885_dev *dev, struct cx23885_buffer *buf) { struct cx23885_riscmem *risc = &buf->risc; - pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma); + dma_free_coherent(&dev->pci->dev, risc->size, risc->cpu, risc->dma); } static void cx23885_tsport_reg_dump(struct cx23885_tsport *port) @@ -2159,7 +2162,7 @@ static int cx23885_initdev(struct pci_dev *pci_dev, (unsigned long long)pci_resource_start(pci_dev, 0)); pci_set_master(pci_dev); - err = pci_set_dma_mask(pci_dev, 0xffffffff); + err = dma_set_mask(&pci_dev->dev, 0xffffffff); if (err) { pr_err("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name); goto fail_ctrl;