From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,FROM_LOCAL_NOVOWEL, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 45346ECE58F for ; Tue, 15 Oct 2019 21:25:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 10EC220663 for ; Tue, 15 Oct 2019 21:25:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gU0FNH+Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727916AbfJOVZw (ORCPT ); Tue, 15 Oct 2019 17:25:52 -0400 Received: from mail-lf1-f68.google.com ([209.85.167.68]:33086 "EHLO mail-lf1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726408AbfJOVZw (ORCPT ); Tue, 15 Oct 2019 17:25:52 -0400 Received: by mail-lf1-f68.google.com with SMTP id y127so15653246lfc.0 for ; Tue, 15 Oct 2019 14:25:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TupgV0MHjA8yhWmBL3cewNdEfIAySH9lA2snhT2KSA0=; b=gU0FNH+YkmD9qkMKyKIVtHQfL7lcArLVLw6hAZPGPh9wu58EpZ+OqTE5ywg4R6bFY+ pkXIAD4EvoB/gq5QY5gfkd6tVajJJ+I7cgDFtE8U3E9XxbgIDHsFg5+ggcrBta64PCLp cCQ6uS/yBUw6Qefb03aimc23o9T6g2wc3Sg2H/xgKMAC3Af+08SLkLOBKVyduCs/ak54 Tvc5EFS+2zAcirOKtZE0J6UoCXUvPvyOdFgeYoIimjMc9CxfwajW5OJrVyopbuEmmlhy eokWvZ336DJO9Kbbe0n+eEvJVpXqF+xa1u4SlwDxi8nEmoYHMz9QKwp/a233ViLfOUnU 5Sog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TupgV0MHjA8yhWmBL3cewNdEfIAySH9lA2snhT2KSA0=; b=cbOO6x67iymOcc0hZ/rw5TwygQs+8iqYHP6JKff07KgplAddnNsxZvvB7tEqMZhmOe 09Lux2E+AOkZt1nbwPcTAlvwruhm04R992xzheQu88JxWC/tcdEDoeqExuew3BAuURgW 7inZBsOhwEwhFi/tF9wqbhJXGA+1N9IEt0BQL8a+YTQK/RTrjLRZZUSkP6J9i1CAPIJe w15sVEq3fpfaqq8MYjYhKvTLLb//UlnBJxDrc8u3FxDLn7YSzO/Bb1gqiVzJq41uJr6U FYSVkPdXu7AohpBzOM0vPD7T2B4QDhsU08WbRXT4P1ixYhg7OuY1UhgaUTVtZ1LV/I4m H/rg== X-Gm-Message-State: APjAAAU92/FaD1ODGB6n1hh7c5LF7jCfT1uy5AQK/G7TNiC0cEU2lswV NJuGsimbNXTjBCr0n5QfEKizfZodlh4= X-Google-Smtp-Source: APXvYqwYi9FHUGev/22Lws4+0G8iiMlMBA/PDnRq6muX/tFrhu8jEDv03Ihqb6Wd32ENbMM1SI5v7A== X-Received: by 2002:ac2:44c3:: with SMTP id d3mr21412169lfm.109.1571174750137; Tue, 15 Oct 2019 14:25:50 -0700 (PDT) Received: from octofox.cadence.com (jcmvbkbc-1-pt.tunnel.tserv24.sto1.ipv6.he.net. [2001:470:27:1fa::2]) by smtp.gmail.com with ESMTPSA id w30sm5313233lfn.82.2019.10.15.14.25.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Oct 2019 14:25:49 -0700 (PDT) From: Max Filippov To: linux-xtensa@linux-xtensa.org Cc: Chris Zankel , Christoph Hellwig , linux-kernel@vger.kernel.org, Max Filippov Subject: [PATCH] xtensa: implement arch_dma_coherent_to_pfn Date: Tue, 15 Oct 2019 14:25:26 -0700 Message-Id: <20191015212526.1775-1-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add trivial implementation for arch_dma_coherent_to_pfn. This change enables communication with PCI ALSA devices through mmapped buffers. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 1 + arch/xtensa/kernel/pci-dma.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index bf492f9e1f75..f78e6b6f8b6f 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -3,6 +3,7 @@ config XTENSA def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_BINFMT_FLAT if !MMU + select ARCH_HAS_DMA_COHERENT_TO_PFN select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_USE_QUEUED_RWLOCKS diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c index 154979d62b73..6a114ce23084 100644 --- a/arch/xtensa/kernel/pci-dma.c +++ b/arch/xtensa/kernel/pci-dma.c @@ -200,3 +200,9 @@ void arch_dma_free(struct device *dev, size_t size, void *vaddr, if (!dma_release_from_contiguous(dev, page, count)) __free_pages(page, get_order(size)); } + +long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr, + dma_addr_t dma_addr) +{ + return __phys_to_pfn(dma_to_phys(dev, dma_addr)); +} -- 2.20.1