From nobody Wed Oct 1 22:34:51 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 A917234BA59; Sun, 28 Sep 2025 15:02:43 +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=1759071763; cv=none; b=Yg4N5gtEgAC/VnTAvbeRvrMXy/dHIInrAwMEPFUg/xh5QpN/011o4ks0SWXDlS8HM2DN7n7gE8ggvv0e+gZkkDOuF87DS60p3+vH/zGSuYMPcOQThBtvSt9bEJjXcYI/1zTbzOd99FC8VUU3Skvothas4uMijPAgF7EKIpBu4/Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759071763; c=relaxed/simple; bh=joV1RJXfMRWLzhpnIVMn+yDni/E+0b2XTKZNLoQGaO4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oDJWZOA9w0ww3RphZWlgSNUPaiIvaK0PwXoHv7mL2G382GOR8KurQ9vVUxkXcx13RLuq1WQcGtUbHR1vRTrskXcuEzeJScYaKpfv9n2xRS0LlfqR9Xu6o6cjDkXo5g7lN2iCqMevaq976J8fbpTgxGjZrhstNpwMo3OSs5+oMzw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DSOYpsgi; 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="DSOYpsgi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81470C116B1; Sun, 28 Sep 2025 15:02:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759071763; bh=joV1RJXfMRWLzhpnIVMn+yDni/E+0b2XTKZNLoQGaO4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DSOYpsgikSOy8MZ87jPu/KYUDc+l4cdaniO8RKKeI+Ogx+vIbjw3PFXybhxCGiVkL Svbf9LCD/OLSu1+BhYWYUN2NsbU1qvbAJmkVnyM+ehBPWXa1P8Dfsr10VqVfh+CJ3/ fK0PydC9i55IUTpcrx/WEa8jZeqt059f7qwZBuoA4bLcGPLmEQkD0cguNeebMBEFKT 3RrvQyQn8dehTNH48u0yl6WLA+Tz2ziEbgsKR0IERUfTbFnsVdNo8hdbmtk8QqvVxt 7HSong2gEFWSxqgarqeXxYxR/Gye8uoIqVAF8qNmGQXTAkUC6S5UaNNMSjuWnuDC7u prcP+vXzgDPsQ== 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, Magnus Lindholm Subject: [PATCH v1 2/9] MIPS/jazzdma: Provide physical address directly Date: Sun, 28 Sep 2025 18:02:22 +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 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 c97b089b9902..45fe71aa454b 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)); } =20 -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 =3D 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 restrictio= n, + * as the following code operates solely on physical addresses. + */ + return DMA_MAPPING_ERROR; =20 if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) arch_sync_dma_for_device(phys, size, dir); return vdma_alloc(phys, size); } =20 -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 =3D { .alloc =3D jazz_dma_alloc, .free =3D jazz_dma_free, - .map_page =3D jazz_dma_map_page, - .unmap_page =3D jazz_dma_unmap_page, + .map_phys =3D jazz_dma_map_phys, + .unmap_phys =3D jazz_dma_unmap_phys, .map_sg =3D jazz_dma_map_sg, .unmap_sg =3D jazz_dma_unmap_sg, .sync_single_for_cpu =3D jazz_dma_sync_single_for_cpu, --=20 2.51.0