From nobody Thu Oct 2 10:58:22 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3D5C2D6E4E; Thu, 18 Sep 2025 18:45:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758221157; cv=none; b=XuOClYioD6m6mepIptDJOcZyPAsU/tLD3q5vSdbJRWoNLoixOhfuiI+jpnQekfXL/2EdyErJfsz0t0qXuZUAK//pRz724NQAGtt1tU+yFhb5QM96fBnok9yNKTzMY7NJRu33DW10Iukdt3RcWU+cZGES3azs6h5fjsyJN9m78gk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758221157; c=relaxed/simple; bh=1mDXfVNbsYLo4a+duzDpY85ZUnJWos79Vyrao8w+xkA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=i5qJjcg8coYAJH7x2wDOI2GfVznXabH9S6BUf0ERrrE2PcT/JnAmeY+u1Ipn5MtN4HExAPs73FycFYo1y/jNAe381EweoWANzQsRyKw7edZgdeItd5EPjidi8lUNOFN7EskZIC91Ibjkjk5QPetgu9lcUpmuFiGt2y22pC68KUk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uJjcqkji; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uJjcqkji" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65B01C4CEE7; Thu, 18 Sep 2025 18:45:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758221157; bh=1mDXfVNbsYLo4a+duzDpY85ZUnJWos79Vyrao8w+xkA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uJjcqkjioeaPHR3oTtovXk7XnK/pd4Dpvt6tqBF2mLVNs5Q4naZBBRjxEELRfi2+Y D4kIQlN6hJhac0eiwI3sASKq7B/5bGRMKu7BFRE0t7mA5u6NXWj4T2DNxp00i+Dz8P CDKvCCa9nHcj0qbtseSusPltdxhIdxKZ4Yl5D4KaZQNkpzvLKwIkvugBIZkuUi+n41 sRDjxFx3/OcIdrXVx9M+pcPfgc0XKte5yCfdgAtR79e5ju1JRnVXErNA0tRs33R8Nz 1UIUOZkvr968XteLjAHpFkZyPWqxmq1DajIw+0WZAlLFornxw8ZulfpFSWmmyNnZ69 l7OvidjZ6KebQ== From: Leon Romanovsky To: Marek Szyprowski Cc: Leon Romanovsky , Jason Gunthorpe , Andreas Larsson , Borislav Petkov , Dave Hansen , "David S. Miller" , Geoff Levand , Helge Deller , Ingo Molnar , iommu@lists.linux.dev, "James E.J. Bottomley" , Jason Wang , Juergen Gross , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Madhavan Srinivasan , Matt Turner , Michael Ellerman , "Michael S. Tsirkin" , Richard Henderson , sparclinux@vger.kernel.org, Stefano Stabellini , Thomas Bogendoerfer , Thomas Gleixner , virtualization@lists.linux.dev, x86@kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH 7/9] vdpa: Convert to physical address DMA mapping Date: Thu, 18 Sep 2025 21:45:07 +0300 Message-ID: <517785de56c12927a782b6bc51cc84e06493958d.1758219787.git.leon@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Leon Romanovsky Use physical address directly in DMA mapping flow. Signed-off-by: Leon Romanovsky --- drivers/vdpa/vdpa_user/iova_domain.c | 11 +++++------ drivers/vdpa/vdpa_user/iova_domain.h | 8 ++++---- drivers/vdpa/vdpa_user/vduse_dev.c | 18 ++++++++++-------- 3 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/vdpa/vdpa_user/iova_domain.c b/drivers/vdpa/vdpa_user/= iova_domain.c index 58116f89d8dae..c0ecf01003cd3 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.c +++ b/drivers/vdpa/vdpa_user/iova_domain.c @@ -396,17 +396,16 @@ void vduse_domain_sync_single_for_cpu(struct vduse_io= va_domain *domain, read_unlock(&domain->bounce_lock); } =20 -dma_addr_t vduse_domain_map_page(struct vduse_iova_domain *domain, - struct page *page, unsigned long offset, - size_t size, enum dma_data_direction dir, +dma_addr_t vduse_domain_map_phys(struct vduse_iova_domain *domain, + phys_addr_t pa, size_t size, + enum dma_data_direction dir, unsigned long attrs) { struct iova_domain *iovad =3D &domain->stream_iovad; unsigned long limit =3D domain->bounce_size - 1; - phys_addr_t pa =3D page_to_phys(page) + offset; dma_addr_t iova =3D vduse_domain_alloc_iova(iovad, size, limit); =20 - if (!iova) + if (!iova || (attrs & DMA_ATTR_MMIO)) return DMA_MAPPING_ERROR; =20 if (vduse_domain_init_bounce_map(domain)) @@ -430,7 +429,7 @@ dma_addr_t vduse_domain_map_page(struct vduse_iova_doma= in *domain, return DMA_MAPPING_ERROR; } =20 -void vduse_domain_unmap_page(struct vduse_iova_domain *domain, +void vduse_domain_unmap_phys(struct vduse_iova_domain *domain, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, unsigned long attrs) { diff --git a/drivers/vdpa/vdpa_user/iova_domain.h b/drivers/vdpa/vdpa_user/= iova_domain.h index 7f3f0928ec781..7c4546fd856ab 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.h +++ b/drivers/vdpa/vdpa_user/iova_domain.h @@ -53,12 +53,12 @@ void vduse_domain_sync_single_for_cpu(struct vduse_iova= _domain *domain, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir); =20 -dma_addr_t vduse_domain_map_page(struct vduse_iova_domain *domain, - struct page *page, unsigned long offset, - size_t size, enum dma_data_direction dir, +dma_addr_t vduse_domain_map_phys(struct vduse_iova_domain *domain, + phys_addr_t phys, size_t size, + enum dma_data_direction dir, unsigned long attrs); =20 -void vduse_domain_unmap_page(struct vduse_iova_domain *domain, +void vduse_domain_unmap_phys(struct vduse_iova_domain *domain, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, unsigned long attrs); =20 diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vd= use_dev.c index 04620bb77203d..75aa3c9f83fb5 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -834,25 +834,27 @@ static void vduse_dev_sync_single_for_cpu(struct devi= ce *dev, vduse_domain_sync_single_for_cpu(domain, dma_addr, size, dir); } =20 -static dma_addr_t vduse_dev_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir, +static dma_addr_t vduse_dev_map_phys(struct device *dev, phys_addr_t phys, + size_t size, enum dma_data_direction dir, unsigned long attrs) { struct vduse_dev *vdev =3D dev_to_vduse(dev); struct vduse_iova_domain *domain =3D vdev->domain; =20 - return vduse_domain_map_page(domain, page, offset, size, dir, attrs); + if (attrs & DMA_ATTR_MMIO) + return DMA_MAPPING_ERROR; + + return vduse_domain_map_phys(domain, phys, size, dir, attrs); } =20 -static void vduse_dev_unmap_page(struct device *dev, dma_addr_t dma_addr, +static void vduse_dev_unmap_phys(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, unsigned long attrs) { struct vduse_dev *vdev =3D dev_to_vduse(dev); struct vduse_iova_domain *domain =3D vdev->domain; =20 - return vduse_domain_unmap_page(domain, dma_addr, size, dir, attrs); + return vduse_domain_unmap_phys(domain, dma_addr, size, dir, attrs); } =20 static void *vduse_dev_alloc_coherent(struct device *dev, size_t size, @@ -896,8 +898,8 @@ static size_t vduse_dev_max_mapping_size(struct device = *dev) static const struct dma_map_ops vduse_dev_dma_ops =3D { .sync_single_for_device =3D vduse_dev_sync_single_for_device, .sync_single_for_cpu =3D vduse_dev_sync_single_for_cpu, - .map_page =3D vduse_dev_map_page, - .unmap_page =3D vduse_dev_unmap_page, + .map_phys =3D vduse_dev_map_phys, + .unmap_phys =3D vduse_dev_unmap_phys, .alloc =3D vduse_dev_alloc_coherent, .free =3D vduse_dev_free_coherent, .max_mapping_size =3D vduse_dev_max_mapping_size, --=20 2.51.0