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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 C8530C43441 for ; Wed, 14 Nov 2018 08:25:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 83C6821780 for ; Wed, 14 Nov 2018 08:25:05 +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="aOTFjgPf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 83C6821780 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733176AbeKNS1P (ORCPT ); Wed, 14 Nov 2018 13:27:15 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:50194 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732043AbeKNS1O (ORCPT ); Wed, 14 Nov 2018 13:27:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=1JqJLn1LqwELTBE6WlK9i6JU03ho/EMh1xHdgC/i7Ig=; b=aOTFjgPfWVeFjwLt2NCm4PjcNJ NaL3B+pEciRmRbOHkVuZqPunccEG2tK4Imy1on2lrBN6pXG3jK5Qu2ThvZpJkbX59S1IrU5d8vIek x9qFuMci0zsqr3B5nqG7XumYlXMq49qCeCDuxgXwirG4yW5ZZaJGceqrZsj4E0zNqxuQM6/FmZYNe f4kL1zEY9ihYYbUFlYJeD5gaeGlsF4Tb/TD2W7pH85A/5sNDCcZtCTi6g4ZOw3x3wBY5o4hQjctTL mXd010VAsyVr23D1RKvBz6B9JYLavjHcXPdYaABa4e6D7ukhJAELvKUrhBV/239vUIV8ISrxi5kC6 jhnhOzcg==; Received: from 089144211136.atnat0020.highway.a1.net ([89.144.211.136] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gMqTW-00057V-QH; Wed, 14 Nov 2018 08:24:39 +0000 From: Christoph Hellwig To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 30/34] powerpc/dma: remove dma_nommu_mmap_coherent Date: Wed, 14 Nov 2018 09:23:10 +0100 Message-Id: <20181114082314.8965-31-hch@lst.de> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181114082314.8965-1-hch@lst.de> References: <20181114082314.8965-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The coherent cache version of this function already is functionally identicall to the default version, and by defining the arch_dma_coherent_to_pfn hook the same is ture for the noncoherent version as well. Signed-off-by: Christoph Hellwig --- arch/powerpc/include/asm/dma-mapping.h | 4 ---- arch/powerpc/kernel/dma-iommu.c | 1 - arch/powerpc/kernel/dma-swiotlb.c | 1 - arch/powerpc/kernel/dma.c | 19 ------------------- arch/powerpc/mm/dma-noncoherent.c | 7 +++++-- arch/powerpc/platforms/Kconfig.cputype | 1 + arch/powerpc/platforms/pseries/vio.c | 1 - 7 files changed, 6 insertions(+), 28 deletions(-) diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 16d45518d9bb..f19c486e7b3f 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -25,10 +25,6 @@ extern void *__dma_nommu_alloc_coherent(struct device *dev, size_t size, extern void __dma_nommu_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs); -extern int dma_nommu_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t handle, - size_t size, unsigned long attrs); int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction direction, unsigned long attrs); diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index 4937b39e246b..5b15e53ee43d 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -172,7 +172,6 @@ int dma_iommu_mapping_error(struct device *dev, dma_addr_t dma_addr) const struct dma_map_ops dma_iommu_ops = { .alloc = dma_iommu_alloc_coherent, .free = dma_iommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = dma_iommu_map_sg, .unmap_sg = dma_iommu_unmap_sg, .dma_supported = dma_iommu_dma_supported, diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index b3266f7a6915..03df252ff5fb 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -42,7 +42,6 @@ unsigned int ppc_swiotlb_enable; const struct dma_map_ops powerpc_swiotlb_dma_ops = { .alloc = __dma_nommu_alloc_coherent, .free = __dma_nommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = swiotlb_map_sg_attrs, .unmap_sg = swiotlb_unmap_sg_attrs, .dma_supported = swiotlb_dma_supported, diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 5c83a34f288f..a6590aa77181 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -113,24 +113,6 @@ void __dma_nommu_free_coherent(struct device *dev, size_t size, } #endif /* !CONFIG_NOT_COHERENT_CACHE */ -int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t handle, size_t size, - unsigned long attrs) -{ - unsigned long pfn; - -#ifdef CONFIG_NOT_COHERENT_CACHE - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - pfn = __dma_get_coherent_pfn((unsigned long)cpu_addr); -#else - pfn = page_to_pfn(virt_to_page(cpu_addr)); -#endif - return remap_pfn_range(vma, vma->vm_start, - pfn + vma->vm_pgoff, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -} - int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction direction, unsigned long attrs) @@ -196,7 +178,6 @@ static inline void dma_nommu_sync_single(struct device *dev, const struct dma_map_ops dma_nommu_ops = { .alloc = __dma_nommu_alloc_coherent, .free = __dma_nommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = dma_nommu_map_sg, .dma_supported = dma_nommu_dma_supported, .map_page = dma_nommu_map_page, diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index e955539686a4..ee95da19c82d 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -400,14 +401,16 @@ EXPORT_SYMBOL(__dma_sync_page); /* * Return the PFN for a given cpu virtual address returned by - * __dma_nommu_alloc_coherent. This is used by dma_mmap_coherent() + * __dma_nommu_alloc_coherent. */ -unsigned long __dma_get_coherent_pfn(unsigned long cpu_addr) +long arch_dma_coherent_to_pfn(struct device *dev, void *vaddr, + dma_addr_t dma_addr) { /* This should always be populated, so we don't test every * level. If that fails, we'll have a nice crash which * will be as good as a BUG_ON() */ + unsigned long cpu_addr = (unsigned long)vaddr; pgd_t *pgd = pgd_offset_k(cpu_addr); pud_t *pud = pud_offset(pgd, cpu_addr); pmd_t *pmd = pmd_offset(pud, cpu_addr); diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 6fedbf349fce..5fdfc1a6435c 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -414,6 +414,7 @@ config NOT_COHERENT_CACHE bool depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || \ GAMECUBE_COMMON || AMIGAONE + select ARCH_HAS_DMA_COHERENT_TO_PFN default n if PPC_47x default y diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c index ea3a9745c812..63dbc4cfe60d 100644 --- a/arch/powerpc/platforms/pseries/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -603,7 +603,6 @@ static void vio_dma_iommu_unmap_sg(struct device *dev, static const struct dma_map_ops vio_dma_mapping_ops = { .alloc = vio_dma_iommu_alloc_coherent, .free = vio_dma_iommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = vio_dma_iommu_map_sg, .unmap_sg = vio_dma_iommu_unmap_sg, .map_page = vio_dma_iommu_map_page, -- 2.19.1 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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 B0F50C43441 for ; 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See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The coherent cache version of this function already is functionally identicall to the default version, and by defining the arch_dma_coherent_to_pfn hook the same is ture for the noncoherent version as well. Signed-off-by: Christoph Hellwig --- arch/powerpc/include/asm/dma-mapping.h | 4 ---- arch/powerpc/kernel/dma-iommu.c | 1 - arch/powerpc/kernel/dma-swiotlb.c | 1 - arch/powerpc/kernel/dma.c | 19 ------------------- arch/powerpc/mm/dma-noncoherent.c | 7 +++++-- arch/powerpc/platforms/Kconfig.cputype | 1 + arch/powerpc/platforms/pseries/vio.c | 1 - 7 files changed, 6 insertions(+), 28 deletions(-) diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 16d45518d9bb..f19c486e7b3f 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -25,10 +25,6 @@ extern void *__dma_nommu_alloc_coherent(struct device *dev, size_t size, extern void __dma_nommu_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs); -extern int dma_nommu_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t handle, - size_t size, unsigned long attrs); int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction direction, unsigned long attrs); diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index 4937b39e246b..5b15e53ee43d 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -172,7 +172,6 @@ int dma_iommu_mapping_error(struct device *dev, dma_addr_t dma_addr) const struct dma_map_ops dma_iommu_ops = { .alloc = dma_iommu_alloc_coherent, .free = dma_iommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = dma_iommu_map_sg, .unmap_sg = dma_iommu_unmap_sg, .dma_supported = dma_iommu_dma_supported, diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index b3266f7a6915..03df252ff5fb 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -42,7 +42,6 @@ unsigned int ppc_swiotlb_enable; const struct dma_map_ops powerpc_swiotlb_dma_ops = { .alloc = __dma_nommu_alloc_coherent, .free = __dma_nommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = swiotlb_map_sg_attrs, .unmap_sg = swiotlb_unmap_sg_attrs, .dma_supported = swiotlb_dma_supported, diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 5c83a34f288f..a6590aa77181 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -113,24 +113,6 @@ void __dma_nommu_free_coherent(struct device *dev, size_t size, } #endif /* !CONFIG_NOT_COHERENT_CACHE */ -int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t handle, size_t size, - unsigned long attrs) -{ - unsigned long pfn; - -#ifdef CONFIG_NOT_COHERENT_CACHE - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - pfn = __dma_get_coherent_pfn((unsigned long)cpu_addr); -#else - pfn = page_to_pfn(virt_to_page(cpu_addr)); -#endif - return remap_pfn_range(vma, vma->vm_start, - pfn + vma->vm_pgoff, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -} - int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction direction, unsigned long attrs) @@ -196,7 +178,6 @@ static inline void dma_nommu_sync_single(struct device *dev, const struct dma_map_ops dma_nommu_ops = { .alloc = __dma_nommu_alloc_coherent, .free = __dma_nommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = dma_nommu_map_sg, .dma_supported = dma_nommu_dma_supported, .map_page = dma_nommu_map_page, diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index e955539686a4..ee95da19c82d 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -400,14 +401,16 @@ EXPORT_SYMBOL(__dma_sync_page); /* * Return the PFN for a given cpu virtual address returned by - * __dma_nommu_alloc_coherent. This is used by dma_mmap_coherent() + * __dma_nommu_alloc_coherent. */ -unsigned long __dma_get_coherent_pfn(unsigned long cpu_addr) +long arch_dma_coherent_to_pfn(struct device *dev, void *vaddr, + dma_addr_t dma_addr) { /* This should always be populated, so we don't test every * level. If that fails, we'll have a nice crash which * will be as good as a BUG_ON() */ + unsigned long cpu_addr = (unsigned long)vaddr; pgd_t *pgd = pgd_offset_k(cpu_addr); pud_t *pud = pud_offset(pgd, cpu_addr); pmd_t *pmd = pmd_offset(pud, cpu_addr); diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 6fedbf349fce..5fdfc1a6435c 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -414,6 +414,7 @@ config NOT_COHERENT_CACHE bool depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || \ GAMECUBE_COMMON || AMIGAONE + select ARCH_HAS_DMA_COHERENT_TO_PFN default n if PPC_47x default y diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c index ea3a9745c812..63dbc4cfe60d 100644 --- a/arch/powerpc/platforms/pseries/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -603,7 +603,6 @@ static void vio_dma_iommu_unmap_sg(struct device *dev, static const struct dma_map_ops vio_dma_mapping_ops = { .alloc = vio_dma_iommu_alloc_coherent, .free = vio_dma_iommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = vio_dma_iommu_map_sg, .unmap_sg = vio_dma_iommu_unmap_sg, .map_page = vio_dma_iommu_map_page, -- 2.19.1