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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A819FC43334 for ; Fri, 17 Jun 2022 10:42:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381949AbiFQKmw (ORCPT ); Fri, 17 Jun 2022 06:42:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381712AbiFQKmu (ORCPT ); Fri, 17 Jun 2022 06:42:50 -0400 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F55013D27; Fri, 17 Jun 2022 03:42:49 -0700 (PDT) Received: by mail-lj1-x231.google.com with SMTP id m25so4285867lji.11; Fri, 17 Jun 2022 03:42:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=2oQIzR0PfOu4ep9bDei7u/w4ujjg4kwcIzD1w/IxZyk=; b=Na93uyvlClyUGGJ5SV7k7+5MIv6NGrHqncgTV7osGwtKPZEsbpyqHFa8LJtmE/WD6d w0u6ZfSo0Q8DrL2zjBxlpBRPCrFCRc1GjPGQsvkErIFJhRL+pqHBobN2vrw82DdXga69 WLcZdicd81W7utUIMaQ8DrWmqj/2uaTBdNrMpg896jRldYgX2S7/rFuks1EfstVc0Rsr dxC8iEWeb8AkWUleBdUHgsiPjhpZ+MFyBut4rw/7YZvrqz0G+1j3vmdkLR1++mMowaI6 7AYWa+IDVIEZfqcP5E3DGVXHaFLKAe+P2u4JZCJgY5bIzSw4z9qNhrtmAM+8/nQeaFXi uTEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=2oQIzR0PfOu4ep9bDei7u/w4ujjg4kwcIzD1w/IxZyk=; b=3cXtyk6Yu48C2dDMXefMLDWlm0tyl/SdOU/3e8qKVrrvLrguJ0vK9c6Mf8rJS3xl05 VFpbmiZ0KUpeWozwV5T9kNzpYRKjeJknCC41G6zCCnOld9EvkbkfTjv9BeYv7ZkQYvJB laVXl7vR1LCVTSBuwpDDVA8fO821nD6kyWu2Gy1Emrzp5YCUtS4Ozs5nA7/YjFvyrHgH w8aHFZDCpT2XMvQSfXddh2PcfoFNAA9la0v3CgF3r1K+WKwLPR+WPMNMMa1fe+7Gn6VL EezxVgyaIdkgk9Y7E0SGBNDcSQro3E2emdLnmLRwgGdeI+JZ3rJzkIztVC2wo3EZxdxz 40lA== X-Gm-Message-State: AJIora9eq9Yuago4UZi9EGgPY0XENNHir6q65Dy1ZxblVI3Ymg7VvlS8 +OVsWy2jvdAwgIEvicr1XMw= X-Google-Smtp-Source: AGRyM1vpxStGCJ4RFrP7LqFHTH35+PFukjx/RcVMtryVmSozxdQP1xBMFNBxR1wI/WbHrrID7NPVew== X-Received: by 2002:a2e:9252:0:b0:258:fc8b:490e with SMTP id v18-20020a2e9252000000b00258fc8b490emr4736792ljg.309.1655462567666; Fri, 17 Jun 2022 03:42:47 -0700 (PDT) Received: from mobilestation ([95.79.189.214]) by smtp.gmail.com with ESMTPSA id d14-20020a2eb04e000000b0024f3d1dae7csm497886ljl.4.2022.06.17.03.42.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jun 2022 03:42:47 -0700 (PDT) Date: Fri, 17 Jun 2022 13:42:45 +0300 From: Serge Semin To: Manivannan Sadhasivam Cc: Serge Semin , Rob Herring , Bjorn Helgaas , Lorenzo Pieralisi , Alexey Malahov , Pavel Parkhomenko , Jingoo Han , Gustavo Pimentel , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Frank Li , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 00/18] PCI: dwc: Various fixes and cleanups Message-ID: <20220617104245.urmnm4ndpqgxswu6@mobilestation> References: <20220610082535.12802-1-Sergey.Semin@baikalelectronics.ru> <20220610082919.4wetzo7wj4bnjp45@mobilestation> <20220616210456.GH2889@thinkpad> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20220616210456.GH2889@thinkpad> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Fri, Jun 17, 2022 at 02:34:56AM +0530, Manivannan Sadhasivam wrote: > On Fri, Jun 10, 2022 at 11:29:19AM +0300, Serge Semin wrote: > > On Fri, Jun 10, 2022 at 11:25:16AM +0300, Serge Semin wrote: > > > This patchset is a first one in the series created in the framework of > > > my Baikal-T1 PCIe/eDMA-related work: > > > > > > [1: In-progress v4] PCI: dwc: Various fixes and cleanups > > > Link: ---you are looking at it--- > > > [2: In-progress v2] PCI: dwc: Add hw version and dma-ranges support > > > Link: https://lore.kernel.org/linux-pci/20220503214638.1895-1-Sergey.Semin@baikalelectronics.ru/ > > > [3: In-progress v2] PCI: dwc: Add extended YAML-schema and Baikal-T1 support > > > Link: https://lore.kernel.org/linux-pci/20220503214638.1895-1-Sergey.Semin@baikalelectronics.ru/ > > > [4: In-progress v2] dmaengine: dw-edma: Add RP/EP local DMA support > > > Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru/ > > > > > > Note it is very recommended to merge the patchsets in the same order as > > > they are placed in the list above in order to prevent possible merge > > > conflicts. Nothing prevents them from being reviewed synchronously though. > > > Any tests are very welcome! > > > > > > As it can be easily inferred from the patchset title, this series is about > > > the DW PCIe Root Port/Endpoint driver fixes and the code cleanups, where > > > fixes come before the cleanup patches. The patchset starts with adding the > > > stop_link() platform-specific method invocation in case of the PCIe host > > > probe procedure errors. It has been missing in the cleanup-on-error path > > > of the DW PCIe Host initialization method. After that the unrolled CSRs > > > layout is added to the iATU disable procedure. In third the disable iATU > > > procedure is fixed to be called only for the internal ATU as being > > > specific for the internal ATU implementation. Then the outbound iATU > > > extended region setup procedure is fixed to have the INCREASE_REGION_SIZE > > > flag set based on the limit-address - not the region size one. The last > > > but not least the CDM-check enabling procedure is fixed to be independent > > > from the non-related num_lanes field state. > > > > > > Afterwards there is a series of cleanups. It concerns the changes like > > > adding braces to the multi-line if-else constructions, trailing new-lines > > > to the print format-string, dropping unnecessary version checking, and > > > various code simplifications and optimizations. > > > > > > New features like adding two-level DT bindings abstraction, adding better > > > structured IP-core version interface, adding iATU regions size detection > > > and the PCIe regions verification procedure, adding dma-ranges support, > > > introducing a set of generic platform clocks and resets and finally adding > > > Baikal-T1 PCIe interface support will be submitted in the next part of the > > > series. > > > > > > Link: https://lore.kernel.org/linux-pci/20220324012524.16784-1-Sergey.Semin@baikalelectronics.ru/ > > > Changelog v2: > > > - Fix the end address of the example in the patch log with > > > the INCREASE_REGION_SIZE flag usage fixup. It should be > > > 0x1000FFFF and not 0x0000FFFF (@Manivannan). > > > - Add the cleanup-on-error path to the dw_pcie_ep_init() function. > > > (@Manivannan) > > > > > > Link: https://lore.kernel.org/linux-pci/20220503212300.30105-1-Sergey.Semin@baikalelectronics.ru/ > > > Changelog v3: > > > - Convert region variable type to u32 in order to fix the implicit type > > > conversion peculiarity. (@kbot) > > > - Rebase onto v5.18-rc6. > > > > > > Link: https://lore.kernel.org/linux-pci/20220517125058.18488-1-Sergey.Semin@baikalelectronics.ru/ > > > Changelog v4: > > > - Move the patch "PCI: dwc: Deallocate EPC memory on EP init error" to > > > being applied before the cleanup patches. > > > > > - Add a new fixes patch: "PCI: dwc: Enable CDM-check independently from > > > the num_lanes value". > > > - Add a new cleanup patch: "PCI: dwc: Organize local variables usage". > > > - Add a new cleanup patch: "PCI: dwc: Re-use local pointer to the > > > resource data". > > > - Add a new cleanup patch: "PCI: dwc: Add start_link/stop_link inliners". > > > - Add a new cleanup patch: "PCI: dwc: Move io_cfg_atu_shared to the Root > > > Port descriptor". > > > - Add a new cleanup patch: "PCI: dwc: Add dw_ prefix to the pcie_port > > > structure name". > > > - Drop the patch "PCI: dwc: Don't use generic IO-ops for DBI-space > > > access". (@Rob) > > > - Drop Manivannan tested tag from the changed patches. > > > > @Mani, there are several brand new patches in this series and a few > > ones updated (@Rob requests). Could you please have a look at the > > patchset one more time? > > > > Yep, this is on my todo list. But I'm in a company wide meetup currently. > Will take a look once I'm back this weekend. > > I'll also give this series (and other ones) a go on my hardware. Great! I'm looking forward to the result. Thanks. -Sergey > > Thanks, > Mani > > > -Sergey > > > > > - Rebase onto v5.18. > > > > > > Signed-off-by: Serge Semin > > > Cc: Alexey Malahov > > > Cc: Pavel Parkhomenko > > > Cc: Jingoo Han > > > Cc: Gustavo Pimentel > > > Cc: "Krzysztof Wilczyński" > > > Cc: Frank Li > > > Cc: Manivannan Sadhasivam > > > Cc: linux-pci@vger.kernel.org > > > Cc: linux-kernel@vger.kernel.org > > > > > > Serge Semin (18): > > > PCI: dwc: Stop link in the host init error and de-initialization > > > PCI: dwc: Add unroll iATU space support to the regions disable method > > > PCI: dwc: Disable outbound windows for controllers with iATU > > > PCI: dwc: Set INCREASE_REGION_SIZE flag based on limit address > > > PCI: dwc: Deallocate EPC memory on EP init error > > > PCI: dwc: Enable CDM-check independently from the num_lanes value > > > PCI: dwc: Add braces to the multi-line if-else statements > > > PCI: dwc: Add trailing new-line literals to the log messages > > > PCI: dwc: Discard IP-core version checking on unrolled iATU detection > > > PCI: dwc: Convert Link-up status method to using dw_pcie_readl_dbi() > > > PCI: dwc: Organize local variables usage > > > PCI: dwc: Re-use local pointer to the resource data > > > PCI: dwc: Add start_link/stop_link inliners > > > PCI: dwc: Move io_cfg_atu_shared to the Root Port descriptor > > > PCI: dwc: Add dw_ prefix to the pcie_port structure name > > > PCI: dwc-plat: Simplify the probe method return value handling > > > PCI: dwc-plat: Discard unused regmap pointer > > > PCI: dwc-plat: Drop dw_plat_pcie_of_match forward declaration > > > > > > drivers/pci/controller/dwc/pci-dra7xx.c | 12 +- > > > drivers/pci/controller/dwc/pci-exynos.c | 6 +- > > > drivers/pci/controller/dwc/pci-imx6.c | 6 +- > > > drivers/pci/controller/dwc/pci-keystone.c | 20 ++-- > > > .../pci/controller/dwc/pci-layerscape-ep.c | 12 -- > > > drivers/pci/controller/dwc/pci-layerscape.c | 2 +- > > > drivers/pci/controller/dwc/pci-meson.c | 2 +- > > > drivers/pci/controller/dwc/pcie-al.c | 6 +- > > > drivers/pci/controller/dwc/pcie-armada8k.c | 4 +- > > > drivers/pci/controller/dwc/pcie-artpec6.c | 4 +- > > > .../pci/controller/dwc/pcie-designware-ep.c | 30 +++-- > > > .../pci/controller/dwc/pcie-designware-host.c | 104 ++++++++++-------- > > > .../pci/controller/dwc/pcie-designware-plat.c | 25 +---- > > > drivers/pci/controller/dwc/pcie-designware.c | 72 +++++++----- > > > drivers/pci/controller/dwc/pcie-designware.h | 46 +++++--- > > > drivers/pci/controller/dwc/pcie-dw-rockchip.c | 4 +- > > > drivers/pci/controller/dwc/pcie-fu740.c | 2 +- > > > drivers/pci/controller/dwc/pcie-histb.c | 10 +- > > > drivers/pci/controller/dwc/pcie-intel-gw.c | 6 +- > > > drivers/pci/controller/dwc/pcie-keembay.c | 4 +- > > > drivers/pci/controller/dwc/pcie-kirin.c | 2 +- > > > drivers/pci/controller/dwc/pcie-qcom.c | 4 +- > > > drivers/pci/controller/dwc/pcie-spear13xx.c | 6 +- > > > drivers/pci/controller/dwc/pcie-tegra194.c | 22 ++-- > > > drivers/pci/controller/dwc/pcie-uniphier.c | 10 +- > > > drivers/pci/controller/dwc/pcie-visconti.c | 6 +- > > > 26 files changed, 225 insertions(+), 202 deletions(-) > > > > > > -- > > > 2.35.1 > > > > > -- > மணிவண்ணன் சதாசிவம்