From nobody Thu Oct 2 15:32:38 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 9B312279DD8; Tue, 16 Sep 2025 07:32:31 +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=1758007951; cv=none; b=XLLvnEaV68EoNN9EMWUKTxXY+apnpGFnSEVCq60yKmtl739h47TmLV+vKnzrmGwbKpGFVwrpIOVTrOGgrzOBCUoqKUjZIGnVVvUA+0HzhfwBjYumrMtsF7Z7cPtgdFbZggXlSg4obUkonxIe8GjbthtwrtXVXWYUaRasVemrxyI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758007951; c=relaxed/simple; bh=IWZzOtyPCKRdI0+hToW/fnJJYkRULeN+gzOWf1AjNkY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YRIBJ3m3WL9UkN4vi6yIBt1d9rOIKq7jU6fVVO+07ffU3wa2P/fB8muXPxxilzhsoZQegV1yRPiaFslaFrS7QxQmifHCtaM2mfEUXxgbJCBek2YCZ4VOcbqesTfERF1WZKI1QBZBh27FZTSRZ3E59MrvncoD3QC8jHrCOIDFDDI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GHnKv1Pp; 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="GHnKv1Pp" 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: 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 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 Reviewed-by: Jason Gunthorpe --- 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 =3D dma_direct_map_phys(dev, phys, size, dir, attrs); else if (use_dma_iommu(dev)) addr =3D iommu_dma_map_phys(dev, phys, size, dir, attrs); + else if (ops->map_phys) + addr =3D 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); --=20 2.51.0