Message ID | 20230327121317.4081816-5-arnd@kernel.org |
---|---|
State | New |
Headers | show
Return-Path: <linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=<UNKNOWN>) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=gG7ffK0i; 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=PBdwMSfV; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PlWwG28lrz1yXv for <incoming@patchwork.ozlabs.org>; Mon, 27 Mar 2023 23:14:54 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Qk6tvu0x/HuH5ef/bnNoo8R68Dd89PLQI081WizI49U=; b=gG7ffK0ik3CJUG w69zG0tUb3yfML1QFw/YtC6/eHh2fY765v+EIiqRksaa9IVzjBD1IsZwhVetuJgXoFdu3JCf51stx DgJOC2d22pRfRAnTrsuTUjG/WQcXI+TZlMPVVBUVvBa7TEyxfOtTVFWsBQiVJCbBVqsv9GN8JIpI/ wS3a9kImLTgfiOfpt3gM0cN2Flbtv3evUeQwiHI8Om3QabzUevBlgk15FFyQFb06fTX3zXN0kMslf rrLwKIfc/pFUPnSVm0UpngYODLUe8JOp0Ke8hMofcY+/bYsFcYAweCdSTbNHmb1ZYE0NVflIQISmM 0V2MvYuv9SJsbR4EBXww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pglkR-00ArES-0W; Mon, 27 Mar 2023 12:14:51 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pglk9-00Ar2m-1M; Mon, 27 Mar 2023 12:14:36 +0000 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 CD90D611ED; Mon, 27 Mar 2023 12:14:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B9C0C433EF; Mon, 27 Mar 2023 12:14:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679919272; bh=ZhYG8JNUwjljPv9OKiF3eMGP7VJHxmj1d7o6guSf4No=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PBdwMSfV6WhGkWO4GD6yfcHOXcUpefrDC/+txqBn1K1TXjh6vtxTQLHjgNJ0FEkt0 8kEYArEe0oN6TTz55A/ouqhYMm5G10akCJmXzW/muCfT8GBSGN5Uni+3VEARUH4Auc H3B65ricYeSXsGj53UrQTCcr95NZtYK/45G5qbsvcFbKhYxNglRYB3Jv/RHrFzHtks DVdr6HivllSdF2l5dgd1hATA9JZvKqwXHc1koDjA6e60zts4nydXjlN/RqoC6otSSa Tq0Qb2MNzDbHG7RwE+Edr/TKARawLeFdDNo+IyVrlawBJzvWe5xP0tuqDo6AiiQKTk Trtj2/d6VSosQ== From: Arnd Bergmann <arnd@kernel.org> To: linux-kernel@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de>, Vineet Gupta <vgupta@kernel.org>, Russell King <linux@armlinux.org.uk>, Neil Armstrong <neil.armstrong@linaro.org>, Linus Walleij <linus.walleij@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>, Brian Cain <bcain@quicinc.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Michal Simek <monstr@monstr.eu>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Dinh Nguyen <dinguyen@kernel.org>, Stafford Horne <shorne@gmail.com>, Helge Deller <deller@gmx.de>, Michael Ellerman <mpe@ellerman.id.au>, Christophe Leroy <christophe.leroy@csgroup.eu>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Rich Felker <dalias@libc.org>, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, "David S. Miller" <davem@davemloft.net>, Max Filippov <jcmvbkbc@gmail.com>, Christoph Hellwig <hch@lst.de>, Robin Murphy <robin.murphy@arm.com>, Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>, Conor Dooley <conor.dooley@microchip.com>, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-oxnas@groups.io, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org Subject: [PATCH 04/21] microblaze: dma-mapping: skip extra DMA flushes Date: Mon, 27 Mar 2023 14:13:00 +0200 Message-Id: <20230327121317.4081816-5-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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230327_051433_563082_9B47865A X-CRM114-Status: GOOD ( 13.54 ) X-Spam-Score: -2.7 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: Arnd Bergmann <arnd@arndb.de> The microblaze dma_sync_* implementation uses the same function for both _for_cpu() and _for_device(), which is inconsistent with other architectures and slightly more expensive. 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Series |
dma-mapping: unify support for cache flushes
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expand
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diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c index 04d091ade417..b4c4e45fd45e 100644 --- a/arch/microblaze/kernel/dma.c +++ b/arch/microblaze/kernel/dma.c @@ -14,8 +14,8 @@ #include <linux/bug.h> #include <asm/cacheflush.h> -static void __dma_sync(phys_addr_t paddr, size_t size, - enum dma_data_direction direction) +void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) { switch (direction) { case DMA_TO_DEVICE: @@ -30,14 +30,16 @@ static void __dma_sync(phys_addr_t paddr, size_t size, } } -void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, - enum dma_data_direction dir) -{ - __dma_sync(paddr, size, dir); -} - void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, enum dma_data_direction dir) { - __dma_sync(paddr, size, dir); -} + switch (direction) { + case DMA_TO_DEVICE: + break; + case DMA_BIDIRECTIONAL: + case DMA_FROM_DEVICE: + invalidate_dcache_range(paddr, paddr + size); + break; + default: + BUG(); + }}