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=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 C4411C433F4 for ; Wed, 19 Aug 2020 06:57:38 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7848C2083B for ; Wed, 19 Aug 2020 06:57:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Tv1CWbnL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7848C2083B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1A85B6B006C; Wed, 19 Aug 2020 02:57:38 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 157566B0096; Wed, 19 Aug 2020 02:57:38 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 06C3F8D0003; Wed, 19 Aug 2020 02:57:38 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0001.hostedemail.com [216.40.44.1]) by kanga.kvack.org (Postfix) with ESMTP id E4C2A6B006C for ; Wed, 19 Aug 2020 02:57:37 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 61F7F362D for ; Wed, 19 Aug 2020 06:57:37 +0000 (UTC) X-FDA: 77166412554.01.club09_520075f27026 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 18475100483F1 for ; Wed, 19 Aug 2020 06:57:37 +0000 (UTC) X-HE-Tag: club09_520075f27026 X-Filterd-Recvd-Size: 12225 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Wed, 19 Aug 2020 06:57:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=gJaI6Esuqevc5n1odFS47MOCP+KM34I3vDSv3XnZjAI=; b=Tv1CWbnLynvwmWs1Jhy5zKi3md uudL4RJWWKY0HA+Skk8RjLPLJTh5m/CPiLgGyyco4MXv4NU9RtzxB6zAQFr16KcUPXrcLcOOhIvEN jJr4XvBcs5GY24zClkR+J/+cJPPc+ftEYA+yf9U9PCVauRmjbZpqGKFEWmNjRmgA5OM38RiW7jJIx 3R9Tg8QbODpTLKDYSQQbRhIOvxDaEip+asJYYyOr1erjSfyFKIaDyZHzGQMmLigFfGFV53Q+268So 6R1k9V4Ymav8GkQQ6bHSD2xeHktpWRG/qBapr3eHyF2P7npqGMhZh6Wb9r08l2HiSbt7nThXkUmIe Ipaa1CEQ==; Received: from [2001:4bb8:198:f3b2:86b6:2277:f429:37a1] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8I1L-0008Pq-VK; Wed, 19 Aug 2020 06:56:28 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Ben Skeggs , Pawel Osciak , Marek Szyprowski , Matt Porter , iommu@lists.linux-foundation.org Cc: Tom Lendacky , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: [PATCH 15/28] dma-direct: remove __dma_to_phys Date: Wed, 19 Aug 2020 08:55:42 +0200 Message-Id: <20200819065555.1802761-16-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200819065555.1802761-1-hch@lst.de> References: <20200819065555.1802761-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Queue-Id: 18475100483F1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: There is no harm in just always clearing the SME encryption bit, while significantly simplifying the interface. Signed-off-by: Christoph Hellwig --- arch/arm/include/asm/dma-direct.h | 2 +- arch/mips/bmips/dma.c | 2 +- arch/mips/cavium-octeon/dma-octeon.c | 2 +- arch/mips/include/asm/dma-direct.h | 2 +- arch/mips/loongson2ef/fuloong-2e/dma.c | 2 +- arch/mips/loongson2ef/lemote-2f/dma.c | 2 +- arch/mips/loongson64/dma.c | 2 +- arch/mips/pci/pci-ar2315.c | 2 +- arch/mips/pci/pci-xtalk-bridge.c | 2 +- arch/mips/sgi-ip32/ip32-dma.c | 2 +- arch/powerpc/include/asm/dma-direct.h | 2 +- include/linux/dma-direct.h | 21 +++++++++++---------- kernel/dma/direct.c | 6 +----- 13 files changed, 23 insertions(+), 26 deletions(-) diff --git a/arch/arm/include/asm/dma-direct.h b/arch/arm/include/asm/dma= -direct.h index 7c3001a6a775bf..a8cee87a93e8ab 100644 --- a/arch/arm/include/asm/dma-direct.h +++ b/arch/arm/include/asm/dma-direct.h @@ -8,7 +8,7 @@ static inline dma_addr_t __phys_to_dma(struct device *dev= , phys_addr_t paddr) return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset; } =20 -static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t d= ev_addr) +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev= _addr) { unsigned int offset =3D dev_addr & ~PAGE_MASK; return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset; diff --git a/arch/mips/bmips/dma.c b/arch/mips/bmips/dma.c index df56bf4179e347..ba2a5d33dfd3fa 100644 --- a/arch/mips/bmips/dma.c +++ b/arch/mips/bmips/dma.c @@ -52,7 +52,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_= t pa) return pa; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { struct bmips_dma_range *r; =20 diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octe= on/dma-octeon.c index 14ea680d180e07..388b13ba2558c2 100644 --- a/arch/mips/cavium-octeon/dma-octeon.c +++ b/arch/mips/cavium-octeon/dma-octeon.c @@ -177,7 +177,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_add= r_t paddr) return paddr; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) { #ifdef CONFIG_PCI if (dev && dev_is_pci(dev)) diff --git a/arch/mips/include/asm/dma-direct.h b/arch/mips/include/asm/d= ma-direct.h index 14e352651ce946..8e178651c638c2 100644 --- a/arch/mips/include/asm/dma-direct.h +++ b/arch/mips/include/asm/dma-direct.h @@ -3,6 +3,6 @@ #define _MIPS_DMA_DIRECT_H 1 =20 dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr); -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr); +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); =20 #endif /* _MIPS_DMA_DIRECT_H */ diff --git a/arch/mips/loongson2ef/fuloong-2e/dma.c b/arch/mips/loongson2= ef/fuloong-2e/dma.c index e122292bf6660a..83fadeb3fd7d56 100644 --- a/arch/mips/loongson2ef/fuloong-2e/dma.c +++ b/arch/mips/loongson2ef/fuloong-2e/dma.c @@ -6,7 +6,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t = paddr) return paddr | 0x80000000; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { return dma_addr & 0x7fffffff; } diff --git a/arch/mips/loongson2ef/lemote-2f/dma.c b/arch/mips/loongson2e= f/lemote-2f/dma.c index abf0e39d7e4696..302b43a14eee74 100644 --- a/arch/mips/loongson2ef/lemote-2f/dma.c +++ b/arch/mips/loongson2ef/lemote-2f/dma.c @@ -6,7 +6,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t = paddr) return paddr | 0x80000000; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { if (dma_addr > 0x8fffffff) return dma_addr; diff --git a/arch/mips/loongson64/dma.c b/arch/mips/loongson64/dma.c index dbfe6e82fddd1c..b3dc5d0bd2b113 100644 --- a/arch/mips/loongson64/dma.c +++ b/arch/mips/loongson64/dma.c @@ -13,7 +13,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_= t paddr) return ((nid << 44) ^ paddr) | (nid << node_id_offset); } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) { /* We extract 2bit node id (bit 44~47, only bit 44~45 used now) from * Loongson-3's 48bit address space and embed it into 40bit */ diff --git a/arch/mips/pci/pci-ar2315.c b/arch/mips/pci/pci-ar2315.c index 490953f515282a..d88395684f487d 100644 --- a/arch/mips/pci/pci-ar2315.c +++ b/arch/mips/pci/pci-ar2315.c @@ -175,7 +175,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_add= r_t paddr) return paddr + ar2315_dev_offset(dev); } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { return dma_addr - ar2315_dev_offset(dev); } diff --git a/arch/mips/pci/pci-xtalk-bridge.c b/arch/mips/pci/pci-xtalk-b= ridge.c index 9b3cc775c55e05..f1b37f32b55395 100644 --- a/arch/mips/pci/pci-xtalk-bridge.c +++ b/arch/mips/pci/pci-xtalk-bridge.c @@ -33,7 +33,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_= t paddr) return bc->baddr + paddr; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { return dma_addr & ~(0xffUL << 56); } diff --git a/arch/mips/sgi-ip32/ip32-dma.c b/arch/mips/sgi-ip32/ip32-dma.= c index fa7b17cb53853e..160317294d97a9 100644 --- a/arch/mips/sgi-ip32/ip32-dma.c +++ b/arch/mips/sgi-ip32/ip32-dma.c @@ -27,7 +27,7 @@ dma_addr_t __phys_to_dma(struct device *dev, phys_addr_= t paddr) return dma_addr; } =20 -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) { phys_addr_t paddr =3D dma_addr & RAM_OFFSET_MASK; =20 diff --git a/arch/powerpc/include/asm/dma-direct.h b/arch/powerpc/include= /asm/dma-direct.h index abc154d784b078..95b09313d2a4cf 100644 --- a/arch/powerpc/include/asm/dma-direct.h +++ b/arch/powerpc/include/asm/dma-direct.h @@ -7,7 +7,7 @@ static inline dma_addr_t __phys_to_dma(struct device *dev= , phys_addr_t paddr) return paddr + dev->archdata.dma_offset; } =20 -static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t d= addr) +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dad= dr) { return daddr - dev->archdata.dma_offset; } diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 6a96a8ecac7cbc..811582a39e291f 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -24,11 +24,17 @@ static inline dma_addr_t __phys_to_dma(struct device = *dev, phys_addr_t paddr) return dev_addr - ((dma_addr_t)dev->dma_pfn_offset << PAGE_SHIFT); } =20 -static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t d= ev_addr) +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev= _addr) { - phys_addr_t paddr =3D (phys_addr_t)dev_addr; - - return paddr + ((phys_addr_t)dev->dma_pfn_offset << PAGE_SHIFT); + phys_addr_t paddr =3D (phys_addr_t)dev_addr + + ((phys_addr_t)dev->dma_pfn_offset << PAGE_SHIFT); + + /* + * Clear the Memory encryption mask if support by the architecture. We + * do this unconditionally so that we don't have to track if someone + * fed us an encrypted or unencryped DMA address. + */ + return __sme_clr(paddr); } #endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */ =20 @@ -44,7 +50,7 @@ static inline bool force_dma_unencrypted(struct device = *dev) /* * If memory encryption is supported, phys_to_dma will set the memory en= cryption * bit in the DMA address, and dma_to_phys will clear it. The raw __phy= s_to_dma - * and __dma_to_phys versions should only be used on non-encrypted memor= y for + * version should only be used on non-encrypted memory for * special occasions like DMA coherent buffers. */ static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t pad= dr) @@ -52,11 +58,6 @@ static inline dma_addr_t phys_to_dma(struct device *de= v, phys_addr_t paddr) return __sme_set(__phys_to_dma(dev, paddr)); } =20 -static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dad= dr) -{ - return __sme_clr(__dma_to_phys(dev, daddr)); -} - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size= _t size, bool is_ram) { diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 2e280b9c063449..a97835983a34f7 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -48,11 +48,6 @@ gfp_t dma_direct_optimal_gfp_mask(struct device *dev, = u64 dma_mask, { u64 dma_limit =3D min_not_zero(dma_mask, dev->bus_dma_limit); =20 - if (force_dma_unencrypted(dev)) - *phys_limit =3D __dma_to_phys(dev, dma_limit); - else - *phys_limit =3D dma_to_phys(dev, dma_limit); - /* * Optimistically try the zone that the physical address mask falls * into first. If that returns memory that isn't actually addressable @@ -61,6 +56,7 @@ gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u= 64 dma_mask, * Note that GFP_DMA32 and GFP_DMA are no ops without the corresponding * zones. */ + *phys_limit =3D dma_to_phys(dev, dma_limit); if (*phys_limit <=3D DMA_BIT_MASK(zone_dma_bits)) return GFP_DMA; if (*phys_limit <=3D DMA_BIT_MASK(32)) --=20 2.28.0