From patchwork Wed Feb 22 13:37:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 13149169 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 89D87C61DA4 for ; Wed, 22 Feb 2023 13:37:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231970AbjBVNhX (ORCPT ); Wed, 22 Feb 2023 08:37:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231658AbjBVNhW (ORCPT ); Wed, 22 Feb 2023 08:37:22 -0500 Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8D0418A83; Wed, 22 Feb 2023 05:37:20 -0800 (PST) Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id 2EDC35C0121; Wed, 22 Feb 2023 08:37:20 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Wed, 22 Feb 2023 08:37:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1677073040; x=1677159440; bh=w9 MPuL3xvzlmyepaLfzNP3Yd6NyYPIjuZVV4oO83i4c=; b=Z9k/56ZNql9SmQjH8z KTyQCSI1IZ1NM2Yj9JWpAzAz3hnbjCpGdshk3Ra8L0dbAefCWwUgoJrZlvDfu5T1 K/L+D9sZ59n7AAk/yBR0zWYCFsxF+2h6jUuu798ERAg4iafehLBk1vvv5BkKxSZR T0WfKFm788ARSFTH+p39Ly6DMFpnvTP0M6waFf5vedhgMtuvRQ+L/PwnSP03bX5H 8tkfMxiTlHLBHSe3bfLkOIIYFCEsz9uCx9wkgOEnPd39wOYMRpFeqXPnfuR5S+AJ bU7mWQssr0Pvse4r6RXHikUPkwQzEeO3X/UYeCCYPM53JxkqwgUmtyo9lP1Dmgd+ ZC8g== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding: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=fm1; t=1677073040; x=1677159440; bh=w9MPuL3xvzlmy epaLfzNP3Yd6NyYPIjuZVV4oO83i4c=; b=t0+fpHEADym4UyAXwv8RABDiQxR2Q 4gr8wHJZ/37eH4oUG/xTdRNgRlf1o62QDvSv/LE8AUm4DxFsmz28+PSxKycYCmt3 BgYtnw9uQFmqOLw9Mrz1XGlXRWR8T9OCRktL4UUFb07DJOe1giUUnt740OEhNoEn 1UrMK+67Ean0yYV0Nz80kffJMD7kPvijn5HeBxEdFN1nmA6tfQP8mw5PpMbgWabU xaqwtrhLyYKPB7p/Lpdb+i7FQ06zm9ihVR/oN5F1KHXWIgVwUjTpENj+jEBUwfa0 4l10PZDnOlS1lDOR3ssdXABDUnXL1sxi8eFIZUlEdwv5VKIKABV7BR82w== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrudejledghedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpeflihgrgihunhcujggrnhhguceojhhirgiguhhnrdihrghn ghesfhhlhihgohgrthdrtghomheqnecuggftrfgrthhtvghrnhepfeeludefheegvdeuvd dvgeekgfdvtdettdelieeihfegtedugeekhfdvhfejfedtnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepjhhirgiguhhnrdihrghnghesfhhlhi hgohgrthdrtghomh X-ME-Proxy: Feedback-ID: ifd894703:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 22 Feb 2023 08:37:18 -0500 (EST) 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 1/3] dma-mapping: Provide a fallback dma_default_coherent Date: Wed, 22 Feb 2023 13:37:10 +0000 Message-Id: <20230222133712.8079-2-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) In-Reply-To: <20230222133712.8079-1-jiaxun.yang@flygoat.com> References: <20230222133712.8079-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org dma_default_coherent was decleared unconditionally at kernel/dma/mapping.c but only decleared when any of non-coherent options is enabled in dma-map-ops.h. Guard the declaration in mapping.c with non-coherent options and provide a fallback definition. Signed-off-by: Jiaxun Yang --- include/linux/dma-map-ops.h | 1 + kernel/dma/mapping.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index 41bf4bdb117a..0a1aaf7163b3 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -269,6 +269,7 @@ static inline bool dev_is_dma_coherent(struct device *dev) return dev->dma_coherent; } #else +#define dma_default_coherent true static inline bool dev_is_dma_coherent(struct device *dev) { return true; diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 68106e3791f6..80f9663ffe26 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -17,7 +17,11 @@ #include "debug.h" #include "direct.h" +#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; +#endif /* * Managed DMA API From patchwork Wed Feb 22 13:37:11 2023 Content-Type: text/plain; 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Wed, 22 Feb 2023 08:37:20 -0500 (EST) 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 2/3] riscv: Set dma_default_coherent to true Date: Wed, 22 Feb 2023 13:37:11 +0000 Message-Id: <20230222133712.8079-3-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) In-Reply-To: <20230222133712.8079-1-jiaxun.yang@flygoat.com> References: <20230222133712.8079-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org For riscv our assumption is unless a device states it is non-coherent, we take it to be DMA coherent. For devicetree probed devices that have been true since very begining with OF_DMA_DEFAULT_COHERENT selected. Signed-off-by: Jiaxun Yang --- arch/riscv/kernel/setup.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 376d2827e736..34b371180976 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -300,6 +300,9 @@ void __init setup_arch(char **cmdline_p) riscv_init_cbom_blocksize(); riscv_fill_hwcap(); apply_boot_alternatives(); +#ifdef CONFIG_RISCV_DMA_NONCOHERENT + dma_default_coherent = true; +#endif if (IS_ENABLED(CONFIG_RISCV_ISA_ZICBOM) && riscv_isa_extension_available(NULL, ZICBOM)) riscv_noncoherent_supported(); From patchwork Wed Feb 22 13:37:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 13149171 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 B53DFC64EC4 for ; Wed, 22 Feb 2023 13:37:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232306AbjBVNh1 (ORCPT ); Wed, 22 Feb 2023 08:37:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232274AbjBVNh0 (ORCPT ); Wed, 22 Feb 2023 08:37:26 -0500 Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9535FA; Wed, 22 Feb 2023 05:37:24 -0800 (PST) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 3EC025C005D; Wed, 22 Feb 2023 08:37:24 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Wed, 22 Feb 2023 08:37:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1677073044; x=1677159444; bh=5z jeAJ2ng0uc67KhUvTeOlPjTfztQbBqYYqvTXy2dRg=; b=CnrFptuFsGKJRUfj22 eCJvIHR1rJ4rKKwuCSdvEU+t9keMUDYPlDxrKcdqiW0vC5egsutD5g7hoY5HP4i7 HMkxMbTWzCvonUHl+cEPckRAYx9ZmgvBYs2nTFAyLcI3uiAuukwtflA0h+n2BMtX D4c4H29o/Biee/U8QEwpNnT81CSqOzpHNXdTD4PuyxAFkqEbEnSY7rkqI4Zv/IBO lZQhHbZED7ZdPdCJW2zwOxN+gyQ0kfwifvdgTVupijeB/M1YFFTKGMxH8T7/XBY8 s0ryQ9kNXOEtaL17+KH3VNxIVNIK3CaT5rB/phV5snAiLpuwPiJ7jysU0003Jk0t hpFQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding: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=fm1; t=1677073044; x=1677159444; bh=5zjeAJ2ng0uc6 7KhUvTeOlPjTfztQbBqYYqvTXy2dRg=; b=VzXR1xbEz1IC9r9+uv9wPm7aP/JYm taOclHyTm8DhAhbYsRGnFHa5ifieabUyklQVcAaMOmmh1jOttMTuNN64yGb1pkJo ZN9lsKeIetM7xEYG3zU2Ko30dMLs29mKeKRZdqM1lTWf/1XFEHmBtRTEwPh1yNwO IFHfS6W/kMf3DxmGvR562tP06uxyuItekl0iqQQfMxtQNa+vRe+uhaE8Xv3mvxVV SDLkEfgUkGrH+CXQwWdFMh2tLYm3h/pl3/VehpFL/z8ibRv1fFD+mKzD+MxQZgeD mgHThGHB/4Z7OYCzCdRgQojveVgnaSKqfFMvRK5cQm1DKvyqOIPdeJ8xQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrudejledgheefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpeflihgrgihunhcujggrnhhguceojhhirgiguhhnrdihrghn ghesfhhlhihgohgrthdrtghomheqnecuggftrfgrthhtvghrnhepfeeludefheegvdeuvd dvgeekgfdvtdettdelieeihfegtedugeekhfdvhfejfedtnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepjhhirgiguhhnrdihrghnghesfhhlhi hgohgrthdrtghomh X-ME-Proxy: Feedback-ID: ifd894703:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 22 Feb 2023 08:37:22 -0500 (EST) 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 3/3] of: address: Use dma_default_coherent to determine default coherency Date: Wed, 22 Feb 2023 13:37:12 +0000 Message-Id: <20230222133712.8079-4-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) In-Reply-To: <20230222133712.8079-1-jiaxun.yang@flygoat.com> References: <20230222133712.8079-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org As for now all arches have dma_default_coherent matched with default DMA coherency for of devices, so there is no need to have a standalone config option. This also fixes a case that for some MIPS platforms, coherency information is not carried in devicetree and kernel will override dma_default_coherent at early boot. Note for PowerPC: CONFIG_OF_DMA_DEFUALT_COHERENT was only selected when CONFIG_NOT_COHERENT_CACHE is false, in this case dma_default_coherent will be true, so it still matches present behavior. Note for RISC-V: dma_default_coherent is set to true at init code in this series. Signed-off-by: Jiaxun Yang --- arch/powerpc/Kconfig | 1 - arch/riscv/Kconfig | 1 - drivers/of/Kconfig | 4 ---- drivers/of/address.c | 2 +- 4 files changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 2c9cdf1d8761..c67e5da714f7 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -272,7 +272,6 @@ config PPC select NEED_PER_CPU_PAGE_FIRST_CHUNK if PPC64 select NEED_SG_DMA_LENGTH select OF - select OF_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE select OF_EARLY_FLATTREE select OLD_SIGACTION if PPC32 select OLD_SIGSUSPEND diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 1d46a268ce16..406c6816d289 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -119,7 +119,6 @@ config RISCV select MODULES_USE_ELF_RELA if MODULES select MODULE_SECTIONS if MODULES select OF - select OF_DMA_DEFAULT_COHERENT select OF_EARLY_FLATTREE select OF_IRQ select PCI_DOMAINS_GENERIC if PCI diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 644386833a7b..e40f10bf2ba4 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -102,8 +102,4 @@ config OF_OVERLAY config OF_NUMA bool -config OF_DMA_DEFAULT_COHERENT - # arches should select this if DMA is coherent by default for OF devices - bool - endif # OF diff --git a/drivers/of/address.c b/drivers/of/address.c index 4c0b169ef9bf..23ade4919853 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -1103,7 +1103,7 @@ phys_addr_t __init of_dma_get_max_cpu_address(struct device_node *np) bool of_dma_is_coherent(struct device_node *np) { struct device_node *node; - bool is_coherent = IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT); + bool is_coherent = dma_default_coherent; node = of_node_get(np);