From mboxrd@z Thu Jan 1 00:00:00 1970 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 0FCAC2D5A01; Thu, 18 Sep 2025 18:45:48 +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=1758221148; cv=none; b=Bu2ZRWqpRmJQFxdoGSZ/CG8zquPmHOWS87Ok35R+otB+HuWP/k16ikued4OiIMbBmjt3PdYI7t0EtG18xqTktJBwGEKfQClws6MqEBtIlTkk5A9lzxmjqqMCZnweTBynIEtUhkjThZQw0G0kkkDSv0uQYl3ZjQ0p7lb/roZVESE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758221148; c=relaxed/simple; bh=cZbejEi6nkNmkzheeCBAGk92h84S9bA1MI/LRocXjWE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fDX5YPd0CeHj92uNVqLWXzX4RMMTx2EC+adZq8iBZsT3bgUUoRf7o7dMJSMKbNJYarwcSeAtfzHmKzkYz4A1UTGXC/GYQhKPnzbY/+FRlI86AHicRchbC73f3D0yOiK4PX7kK1qg1gUSBOB3Q/Tur5d0Q7oQJKNBQxKLYaquy2c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sNr2edIl; 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="sNr2edIl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 160A2C4CEE7; Thu, 18 Sep 2025 18:45:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758221147; bh=cZbejEi6nkNmkzheeCBAGk92h84S9bA1MI/LRocXjWE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sNr2edIlUVPpwBqbOV9yBQP1/FOhaJ6YeDv3YF3kmR8I+TMxL1QjnGjSU1FxrbpQ/ lQ6VcMvO1t0Fx87meU0SneChvQ6BiwlfAXAVkQw/+mZLpALEBWt/7dbuxqQajOetpg E0UpfldbzcJ5ehVg/st5XBRiSC6U7x11vRJ6y4GDfv5SOH4qS/egi0PrkYatzt2/al IaK4aFx2ASuaQdtIxto4VB/hGINa/kGkbBcnJ0j1gtF3HkRNcWWSOO8gn40Leemglo 4dtHyTyMQB3UcRW4eJch2wTwtgCcaQp2MoPH5kDS581Z+XWWHAWeK4xod4u549Jg4N Sqf5FMk/Rnwhw== 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 2/9] MIPS/jazzdma: Provide physical address directly Date: Thu, 18 Sep 2025 21:45:02 +0300 Message-ID: X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Leon Romanovsky MIPS jazz uses physical addresses for mapping pages, so convert it to get them directly from DMA mapping routine. Signed-off-by: Leon Romanovsky --- arch/mips/jazz/jazzdma.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c index c97b089b99029..45fe71aa454b7 100644 --- a/arch/mips/jazz/jazzdma.c +++ b/arch/mips/jazz/jazzdma.c @@ -521,18 +521,24 @@ static void jazz_dma_free(struct device *dev, size_t size, void *vaddr, __free_pages(virt_to_page(vaddr), get_order(size)); } -static dma_addr_t jazz_dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction dir, - unsigned long attrs) +static dma_addr_t jazz_dma_map_phys(struct device *dev, phys_addr_t phys, + size_t size, enum dma_data_direction dir, unsigned long attrs) { - phys_addr_t phys = page_to_phys(page) + offset; + if (attrs & DMA_ATTR_MMIO) + /* + * This check is included because older versions of the code lacked + * MMIO path support, and my ability to test this path is limited. + * However, from a software technical standpoint, there is no restriction, + * as the following code operates solely on physical addresses. + */ + return DMA_MAPPING_ERROR; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) arch_sync_dma_for_device(phys, size, dir); return vdma_alloc(phys, size); } -static void jazz_dma_unmap_page(struct device *dev, dma_addr_t dma_addr, +static void jazz_dma_unmap_phys(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, unsigned long attrs) { if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) @@ -607,8 +613,8 @@ static void jazz_dma_sync_sg_for_cpu(struct device *dev, const struct dma_map_ops jazz_dma_ops = { .alloc = jazz_dma_alloc, .free = jazz_dma_free, - .map_page = jazz_dma_map_page, - .unmap_page = jazz_dma_unmap_page, + .map_phys = jazz_dma_map_phys, + .unmap_phys = jazz_dma_unmap_phys, .map_sg = jazz_dma_map_sg, .unmap_sg = jazz_dma_unmap_sg, .sync_single_for_cpu = jazz_dma_sync_single_for_cpu, -- 2.51.0