From patchwork Tue Mar 21 11:08:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 13182580 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 112EFC77B60 for ; Tue, 21 Mar 2023 11:09:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230005AbjCULJD (ORCPT ); Tue, 21 Mar 2023 07:09:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230145AbjCULIg (ORCPT ); Tue, 21 Mar 2023 07:08:36 -0400 Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 673B537558; Tue, 21 Mar 2023 04:08:30 -0700 (PDT) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id D49AA5C0100; Tue, 21 Mar 2023 07:08:29 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Tue, 21 Mar 2023 07:08:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; h= cc:cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1679396909; x= 1679483309; bh=xty1DMHWS21lQRmeSpDxl+4CCE4XjxtL7XjtmR8nqy0=; b=0 UoPN+QG7C1bqGiTWN8M+gr2WGRS9F29y8aRdjCzMMr4yroyCFAZG+3MTqNzR0ZiD S5ZLJFo9KL+t+u8PKbkIVsx3ak4xpwSWvQQRg1VYt1W6NcGczki7zgIrvcimQp8p 9s5Rkgi5hSWw3EPYLaV7Lbz8mKoLcBw0TTGbKfDmWaaEqH+TcG2FPF7YZgpjx/TH jrCbjUuXnd1a+a2M4ajjoiEtGQA2XslZUI0kuLIGHgwYGY8y/0FB0Gb+/FFL6R7g koUe24E/go/e2UMVTGupP15fJKi4vG748BlibyW678ACI/AM5SbKyxBoWH6Qr2TL gHAbNgdQCvsx6UBdajAog== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1679396909; x= 1679483309; bh=xty1DMHWS21lQRmeSpDxl+4CCE4XjxtL7XjtmR8nqy0=; b=J /xvX8RLujujOWnzb+wQhi5Se8NK6SvZKbknGTlOKa9Hn1evkACp/eE8IcSOasdjK L5w2qJZT/3HR2K2jTo5sN+M2wDJb052lIa/Fo8+3vqSr7TE4ZvLR62BAYfxBnTc4 Q1lehIrPcgzjCk/6Jam7FveyPtiOe6jaFVKifg1TwBhhy82f4ITbBCIUG/mhFria nuZUqcpTGUu4Lc+0Q1NpnIETBbphoho604rRbfYAAnyE6gOCkRS+SelycvO1D+Je Zw0VToQ7dKx3WEIhuv2DwStbf8w8Ahvv6wEYt+jEEIRFqeJ5kRC+TuB0BEciEw3F GnG6lYsfURMLW3Trx+f4A== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdegtddgvdegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpeflihgrgihunhcujggrnhhguceojhhirgiguhhnrdihrghn ghesfhhlhihgohgrthdrtghomheqnecuggftrfgrthhtvghrnhepfeeludefheegvdeuvd dvgeekgfdvtdettdelieeihfegtedugeekhfdvhfejfedtnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepjhhirgiguhhnrdihrghnghesfhhlhi hgohgrthdrtghomh X-ME-Proxy: Feedback-ID: ifd894703:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 21 Mar 2023 07:08:28 -0400 (EDT) From: Jiaxun Yang To: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, tsbogend@alpha.franken.de, mpe@ellerman.id.au, paul.walmsley@sifive.com, palmer@dabbelt.com, robh+dt@kernel.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, linux-riscv@lists.infradead.org, Jiaxun Yang Subject: [PATCH v3 3/4] dma-mapping: Provide CONFIG_ARCH_DMA_DEFAULT_COHERENT Date: Tue, 21 Mar 2023 11:08:12 +0000 Message-Id: <20230321110813.26808-4-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) In-Reply-To: <20230321110813.26808-1-jiaxun.yang@flygoat.com> References: <20230321110813.26808-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Provide a kconfig option to allow arches to manipulate default value of dma_default_coherent in Kconfig. Signed-off-by: Jiaxun Yang --- v3: Add comments --- kernel/dma/Kconfig | 7 +++++++ kernel/dma/mapping.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index 56866aaa2ae1..6677d0e64d27 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -76,6 +76,13 @@ config ARCH_HAS_DMA_PREP_COHERENT config ARCH_HAS_FORCE_DMA_UNENCRYPTED bool +# +# Select this option if the architecture assumes DMA devices are coherent +# by default. +# +config ARCH_DMA_DEFAULT_COHERENT + bool + config SWIOTLB bool select NEED_DMA_MAP_STATE diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 80f9663ffe26..9a4db5cce600 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -20,7 +20,7 @@ #if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) -bool dma_default_coherent; +bool dma_default_coherent = IS_ENABLED(CONFIG_ARCH_DMA_DEFAULT_COHERENT); #endif /*