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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 08573C54798 for ; Tue, 5 Mar 2024 14:51:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=nX2hAFEH1HSNcc2953eD/Rf6lJqonK3MWEmZQ3VuDkE=; b=R2p+fCdEUPcL2kQmOllQXxDZv5 hQGvC3QyWkOApFLIO9tR3xJdq+KhDnDj3ojyz5VQ+CxZQPxxJ3Edi35vdbMKrukxdwK+q1wDmpoP0 DrIIiuUdKsgMW5JPnx6vgz55GNt5JXsSVI9pnbA0FVaUkpZTLDQfXsWWUqkJMKQft2Oiw4et5aY1H NJpsmnhtMO0Iv3Iu6SvSIlEVo6tsr+NEJbTgRf+VSP1gT0l1wDIBxy2BEY0rMX7CSZbnK6S3P0gZm hJiUXnlCosX5r6WfdOYnHNVb0Lo0LS9cs0c06E2+fOhU9eAPSDPSFesQuozEe0CqZIFyQg0keCs4W ksyl8hKg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhW8k-0000000E7nm-2wFO; Tue, 05 Mar 2024 14:51:34 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhSpM-0000000DIgW-1qaP for linux-nvme@lists.infradead.org; Tue, 05 Mar 2024 11:19:23 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id B78DBCE02C1; Tue, 5 Mar 2024 11:19:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57BD1C433C7; Tue, 5 Mar 2024 11:19:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709637558; bh=buI8QIvB9qQbf6UKyQhoBlduuXAN0B68Jk0a66fCfeA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VA62QsmEtqhXBGAK4rN6VNEitTXLkb/2XYlSb4WBudevL9kDdBoh4tifdL/VjRFar 1H+/u30Q6gMUDemnHEK81ZwzsQARd67GB/2fvAmpk2CcjeRwvxKaTYdXgZ6GlVbmJJ 8uClIzWnmd+JyzMwtCHXLFF+u11aUDPMDymVmgmB8ncNrM8PGMvr5oAFCmcsFQ1qHg 1PKhw1asupu8LCj6Rp9jbukxSAp+szjyVb0frvcUjnShx1fXiOT6haE07ec60A46X/ 4KPQMde2Kg01UiKCpNqSAs27L3iCvFAZykPVHDsIOgRFXstkHoDfFwljyvBg+8qvrU PdxEE8VVerc/g== From: Leon Romanovsky To: Christoph Hellwig , Robin Murphy , Marek Szyprowski , Joerg Roedel , Will Deacon , Jason Gunthorpe , Chaitanya Kulkarni Cc: Leon Romanovsky , Jonathan Corbet , Jens Axboe , Keith Busch , Sagi Grimberg , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, Bart Van Assche , Damien Le Moal , Amir Goldstein , "josef@toxicpanda.com" , "Martin K. Petersen" , "daniel@iogearbox.net" , Dan Williams , "jack@suse.com" , Zhu Yanjun Subject: [RFC RESEND 06/16] iommu/dma: Implement link/unlink page callbacks Date: Tue, 5 Mar 2024 13:18:37 +0200 Message-ID: <1d3d26afcdbf95b053a3a44ceff34a4fa5334582.1709635535.git.leon@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240305_031920_836735_2F0CE5BA X-CRM114-Status: GOOD ( 12.41 ) X-Mailman-Approved-At: Tue, 05 Mar 2024 05:32:59 -0800 X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Leon Romanovsky Add an implementation of link/unlink interface to perform in map/unmap pages in fast patch for pre-allocated IOVA. Signed-off-by: Leon Romanovsky --- drivers/iommu/dma-iommu.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index dbdd373a609a..b683c4a4e9f8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1752,6 +1752,21 @@ static void iommu_dma_free_iova(struct device *dev, dma_addr_t iova, __iommu_dma_free_iova(cookie, iova, size, &iotlb_gather); } +static dma_addr_t iommu_dma_link_range(struct device *dev, struct page *page, + unsigned long offset, dma_addr_t iova, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + return __iommu_dma_map_pages(dev, page, offset, iova, size, dir, attrs); +} + +static void iommu_dma_unlink_range(struct device *dev, dma_addr_t addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + __iommu_dma_unmap_pages(dev, addr, size, dir, attrs, false); +} + static const struct dma_map_ops iommu_dma_ops = { .flags = DMA_F_PCI_P2PDMA_SUPPORTED, .alloc = iommu_dma_alloc, @@ -1776,6 +1791,8 @@ static const struct dma_map_ops iommu_dma_ops = { .opt_mapping_size = iommu_dma_opt_mapping_size, .alloc_iova = iommu_dma_alloc_iova, .free_iova = iommu_dma_free_iova, + .link_range = iommu_dma_link_range, + .unlink_range = iommu_dma_unlink_range, }; /* -- 2.44.0