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 26D18CAC598 for ; Tue, 16 Sep 2025 07:32:43 +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=fH5TzJJbKo0rBLKWqT0uLuLjv2Tghq9ms3cCHBZtYf0=; b=gZTT3dlbXJDvTikDFui/s9KzJ3 B/gwj5MA8d/uh45yaQJ1u2Gucsr1Qms4e2GaZy8jctSYfXTFe/UvsEtgzNWATUWBhi4d+dFFuH8uv L+F53FSfhIn+loklgxH4qUjlNBz1W6IVBtowVhTIr8sYi+s/JvyBEuVx994OpOYHX73LT+0BJuR6m 3gag8qjZL+g8XVfjvNiS8/BVWLOqEXzHUcC91RQKAmQxbORwg3AXoa3wuffOnKYCGWeyJF4wYIDBI C2O/9T4Gp/98dCXJOtot5BerXNzWanlprxrYEGYj6FSuvpd0ukliPiCcxAC9SENSDYHb2cANvS3EN jVLmGBVQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uyQB1-000000071Ku-0wsE; Tue, 16 Sep 2025 07:32:35 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uyQAy-000000071Hw-14uD for linux-arm-kernel@lists.infradead.org; Tue, 16 Sep 2025 07:32:33 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 540EF43826; Tue, 16 Sep 2025 07:32:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 526A2C4CEFD; Tue, 16 Sep 2025 07:32:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758007951; bh=IWZzOtyPCKRdI0+hToW/fnJJYkRULeN+gzOWf1AjNkY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GHnKv1Pp0tvFEz3pCbixGilPKt8kobdgb8+pVMCk+aJ83OEJyYkpq4oNPL5tRF1fD 9d260B+Az8pQw3/SDCczfKbakugUDvMaEw4JnkRyOWrs97qcYrrDmDvo0vaYvqiOf6 lJxPVkhf5f3cYhABiK9zWvgKFBUYR4xxpYfuKS4ca//1IBhK+9j02CTQVN60OO0Ava hQw9GvszlxU14IwMJrI4jU2k+MWFXsI4vLcD7KSVoQg6MTFSDdYTnUHOC3eBfxNjS8 7e7QvqbTfJC9HAjZH+i157DTyDOHDy2ZSnNgo11ErKUX+6dsBwifkTnkfHAsvinTXK QzaKdm9+yyg5Q== From: Leon Romanovsky To: Marek Szyprowski Cc: Leon Romanovsky , Jason Gunthorpe , iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King Subject: [PATCH v3 1/4] dma-mapping: prepare dma_map_ops to conversion to physical address Date: Tue, 16 Sep 2025 10:32:04 +0300 Message-ID: X-Mailer: git-send-email 2.51.0 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-20250916_003232_378958_FC0042E6 X-CRM114-Status: GOOD ( 10.84 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Leon Romanovsky Add new .map_phys() and .unmap_phys() callbacks to dma_map_ops as a preparation to replace .map_page() and .unmap_page() respectively. Signed-off-by: Leon Romanovsky --- include/linux/dma-map-ops.h | 7 +++++++ kernel/dma/mapping.c | 4 ++++ 2 files changed, 11 insertions(+) diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index 71f5b30254159..25603cb273769 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -37,6 +37,13 @@ struct dma_map_ops { void (*unmap_page)(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir, unsigned long attrs); + + dma_addr_t (*map_phys)(struct device *dev, phys_addr_t phys, + size_t size, enum dma_data_direction dir, + unsigned long attrs); + void (*unmap_phys)(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction dir, + unsigned long attrs); /* * map_sg should return a negative error code on error. See * dma_map_sgtable() for a list of appropriate error codes diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index fe7472f13b106..4080aebe5debb 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -169,6 +169,8 @@ dma_addr_t dma_map_phys(struct device *dev, phys_addr_t phys, size_t size, addr = dma_direct_map_phys(dev, phys, size, dir, attrs); else if (use_dma_iommu(dev)) addr = iommu_dma_map_phys(dev, phys, size, dir, attrs); + else if (ops->map_phys) + addr = ops->map_phys(dev, phys, size, dir, attrs); else if (is_mmio) { if (!ops->map_resource) return DMA_MAPPING_ERROR; @@ -223,6 +225,8 @@ void dma_unmap_phys(struct device *dev, dma_addr_t addr, size_t size, dma_direct_unmap_phys(dev, addr, size, dir, attrs); else if (use_dma_iommu(dev)) iommu_dma_unmap_phys(dev, addr, size, dir, attrs); + else if (ops->unmap_phys) + ops->unmap_phys(dev, addr, size, dir, attrs); else if (is_mmio) { if (ops->unmap_resource) ops->unmap_resource(dev, addr, size, dir, attrs); -- 2.51.0