Message ID | 20230327121317.4081816-12-arnd@kernel.org (mailing list archive) |
---|---|
State | Handled Elsewhere |
Headers | show
Return-Path: <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=<UNKNOWN>) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=ZTcyGdTS; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PlX6q0MQHz1yXq for <incoming@patchwork.ozlabs.org>; Mon, 27 Mar 2023 23:24:02 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4PlX6p4WqFz3ffm for <incoming@patchwork.ozlabs.org>; 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Mon, 27 Mar 2023 23:15:36 +1100 (AEDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 71337611F1; Mon, 27 Mar 2023 12:15:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECBF0C433EF; Mon, 27 Mar 2023 12:15:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679919333; bh=1A9PPhpjfn5VxBSmEZUVZ96wOnXUnzHwhEr/+6UxMII=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZTcyGdTSTyjUcBoLSVeACST/PtG6gZO3O0XJKQPppvSvNB4NDcy90mHMF4gJPiNS6 dNtpCw1Tg4EZtsG9wUbybuw0872LTI9FUQllw/7Q76rCvz6Crnc81KUI9Kj4chNtUZ csalhGjvFzfmW3DiLJ6yzIpVXX+f5lcRxoFKXzIm876A40pKei6+o+8NXVAEYBZqzo s4oPjpuA8RpmeGU6lv0FlQ6gA3tl8++a/WzT9oNtEmsVj2YTsrbo7DHFpEIVM4/NkV v133TD824709IDedq8WaO7uGv2weYLR4T+0csPE1290Z1QSEI0fkOubzH+lLl8W9RM VLW1WwaNQGF9g== From: Arnd Bergmann <arnd@kernel.org> To: linux-kernel@vger.kernel.org Subject: [PATCH 11/21] mips: dma-mapping: skip invalidating before bidirectional DMA Date: Mon, 27 Mar 2023 14:13:07 +0200 Message-Id: <20230327121317.4081816-12-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327121317.4081816-1-arnd@kernel.org> References: <20230327121317.4081816-1-arnd@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: Rich Felker <dalias@libc.org>, linux-sh@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, Linus Walleij <linus.walleij@linaro.org>, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, Max Filippov <jcmvbkbc@gmail.com>, Conor Dooley <conor.dooley@microchip.com>, Guo Ren <guoren@kernel.org>, linux-csky@vger.kernel.org, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon <will@kernel.org>, Christoph Hellwig <hch@lst.de>, Helge Deller <deller@gmx.de>, Russell King <linux@armlinux.org.uk>, Geert Uytterhoeven <geert@linux-m68k.org>, Vineet Gupta <vgupta@kernel.org>, linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, Arnd Bergmann <arnd@arndb.de>, Brian Cain <bcain@quicinc.com>, Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>, linux-m68k@lists.linux-m68k.org, Paul Walmsley <paul.walmsley@sifive.com>, Stafford Horne <shorne@gmail.com>, linux-arm-kernel@lists.infradead.org, Neil Armstrong <neil.armstrong@linaro.org>, Michal Sime k <monstr@monstr.eu>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, linux-parisc@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, Dinh Nguyen <dinguyen@kernel.org>, Palmer Dabbelt <palmer@dabbelt.com>, linux-hexagon@vger.kernel.org, linux-oxnas@groups.io, Robin Murphy <robin.murphy@arm.com>, "David S. Miller" <davem@davemloft.net> Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
dma-mapping: unify support for cache flushes
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expand
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diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c index 3c4fc97b9f39..b4350faf4f1e 100644 --- a/arch/mips/mm/dma-noncoherent.c +++ b/arch/mips/mm/dma-noncoherent.c @@ -65,7 +65,11 @@ static inline void dma_sync_virt_for_device(void *addr, size_t size, dma_cache_inv((unsigned long)addr, size); break; case DMA_BIDIRECTIONAL: - dma_cache_wback_inv((unsigned long)addr, size); + if (IS_ENABLED(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) && + cpu_needs_post_dma_flush()) + dma_cache_wback((unsigned long)addr, size); + else + dma_cache_wback_inv((unsigned long)addr, size); break; default: BUG();