From patchwork Fri Jun 17 12:57:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12885695 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99E74CCA47E for ; Fri, 17 Jun 2022 12:58:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382185AbiFQM6H (ORCPT ); Fri, 17 Jun 2022 08:58:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232578AbiFQM6F (ORCPT ); Fri, 17 Jun 2022 08:58:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEB291A832; Fri, 17 Jun 2022 05:58:03 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 781BF61FA8; Fri, 17 Jun 2022 12:58:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3CBDC3411B; Fri, 17 Jun 2022 12:57:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655470682; bh=cLraNpkEnCzF/4zKCRGjwHG57BoDqUlRiy0OHq9zjK0=; h=From:To:Cc:Subject:Date:From; b=oH4x2PycGtrhhz35364UaeAzZu23iN71evljdxuntEZ1VsVln0947L4kgXWuEzLrC OLWEWoJhN8r14vT4yHg3QQ8tQZDKO4OIba+kSPV417/BH7s5oxSh7c9Yljg6Gr1afz xj6FbXz6U/9X2aXj04KSLFiOeD9C/zZoF0JfQi5Xj9zHHyGlm4nv/8XJxqnfGaiKhC xU+lb1e94omoeQ0C4aaO2uCUV9m066p1W0G5moNKShM55uVOSpn4kV7bLBshwrY4Rp NgxDokayeZJhS/Gn+T5DZpIazOVqwZSNsiUx9537mSMzxTSIGDTQ6H1nn5bxhvpiW3 g1++SMPFn7Evg== From: Arnd Bergmann To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Arnd Bergmann , Jakub Kicinski , Christoph Hellwig , Marek Szyprowski , Robin Murphy , iommu@lists.linux-foundation.org, Khalid Aziz , "Maciej W . Rozycki" , Matt Wang , Miquel van Smoorenburg , Mark Salyzyn , linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-parisc@vger.kernel.org, Denis Efremov Subject: [PATCH v2 0/3] phase out CONFIG_VIRT_TO_BUS Date: Fri, 17 Jun 2022 14:57:47 +0200 Message-Id: <20220617125750.728590-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Arnd Bergmann The virt_to_bus/bus_to_virt interface has been deprecated for decades. After Jakub Kicinski put a lot of work into cleaning out the network drivers using them, there are only a couple of other drivers left, which can all be removed or otherwise cleaned up, to remove the old interface for good. Any out of tree drivers using virt_to_bus() should be converted to using the dma-mapping interfaces, typically dma_alloc_coherent() or dma_map_single()). There are a few m68k and ppc32 specific drivers that keep using the interfaces, but these are all guarded with architecture-specific Kconfig dependencies, and are not actually broken. There are still a number of drivers that are using virt_to_phys() and phys_to_virt() in place of dma-mapping operations, and these are often broken, but they are out of scope for this series. I would like the first two patches to either get merged through the SCSI tree, or get an Ack from the SCSI maintainers so I can merge them through the asm-generic tree Arnd --- Changes since v1: - dropped VME patches that are already in staging-next - dropped media patch that gets merged independently - added a networking patch and dropped it again after it got merged - replace BusLogic removal with a workaround Cc: Jakub Kicinski Cc: Christoph Hellwig # dma-mapping Cc: Marek Szyprowski # dma-mapping Cc: Robin Murphy # dma-mapping Cc: iommu@lists.linux-foundation.org Cc: Khalid Aziz # buslogic Cc: Maciej W. Rozycki # buslogic Cc: Matt Wang # buslogic Cc: Miquel van Smoorenburg # dpt_i2o Cc: Mark Salyzyn # dpt_i2o Cc: linux-scsi@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-arch@vger.kernel.org Cc: linux-alpha@vger.kernel.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-parisc@vger.kernel.org Cc: Denis Efremov # floppy Arnd Bergmann (3): scsi: dpt_i2o: drop stale VIRT_TO_BUS dependency scsi: BusLogic remove bus_to_virt arch/*/: remove CONFIG_VIRT_TO_BUS .../core-api/bus-virt-phys-mapping.rst | 220 ------------------ Documentation/core-api/dma-api-howto.rst | 14 -- Documentation/core-api/index.rst | 1 - .../translations/zh_CN/core-api/index.rst | 1 - arch/alpha/Kconfig | 1 - arch/alpha/include/asm/floppy.h | 2 +- arch/alpha/include/asm/io.h | 8 +- arch/ia64/Kconfig | 1 - arch/ia64/include/asm/io.h | 8 - arch/m68k/Kconfig | 1 - arch/m68k/include/asm/virtconvert.h | 4 +- arch/microblaze/Kconfig | 1 - arch/microblaze/include/asm/io.h | 2 - arch/mips/Kconfig | 1 - arch/mips/include/asm/io.h | 9 - arch/parisc/Kconfig | 1 - arch/parisc/include/asm/floppy.h | 4 +- arch/parisc/include/asm/io.h | 2 - arch/powerpc/Kconfig | 1 - arch/powerpc/include/asm/io.h | 2 - arch/riscv/include/asm/page.h | 1 - arch/x86/Kconfig | 1 - arch/x86/include/asm/io.h | 9 - arch/xtensa/Kconfig | 1 - arch/xtensa/include/asm/io.h | 3 - drivers/scsi/BusLogic.c | 27 ++- drivers/scsi/Kconfig | 4 +- drivers/scsi/dpt_i2o.c | 4 +- include/asm-generic/io.h | 14 -- mm/Kconfig | 8 - 30 files changed, 30 insertions(+), 326 deletions(-) delete mode 100644 Documentation/core-api/bus-virt-phys-mapping.rst