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 X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3833BC48BC2 for ; Sun, 27 Jun 2021 21:06:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B5F361C17 for ; Sun, 27 Jun 2021 21:06:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231478AbhF0VIj (ORCPT ); Sun, 27 Jun 2021 17:08:39 -0400 Received: from mga02.intel.com ([134.134.136.20]:45079 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231468AbhF0VIj (ORCPT ); Sun, 27 Jun 2021 17:08:39 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10028"; a="195010173" X-IronPort-AV: E=Sophos;i="5.83,304,1616482800"; d="scan'208";a="195010173" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2021 14:06:14 -0700 X-IronPort-AV: E=Sophos;i="5.83,304,1616482800"; d="scan'208";a="456075892" Received: from surajrao-mobl.amr.corp.intel.com (HELO [10.0.2.4]) ([10.212.175.85]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2021 14:06:14 -0700 Subject: Re: [PATCH v8 0/3] fpga: Use standard class dev_release function To: mdf@kernel.org, linux-fpga@vger.kernel.org Cc: trix@redhat.com, lgoncalv@redhat.com, yilun.xu@intel.com, hao.wu@intel.com, matthew.gerlach@intel.com, richard.gong@intel.com References: <20210624205355.517687-1-russell.h.weight@intel.com> From: Russ Weight Message-ID: <7b118d3c-17fd-b239-f52f-4716adf2e5c0@intel.com> Date: Sun, 27 Jun 2021 14:05:18 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210624205355.517687-1-russell.h.weight@intel.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org I think this version may be ready to go. Please take a minute to review and either provide a review tag or let me know of any issues you see. - Russ On 6/24/21 1:53 PM, Russ Weight wrote: > The FPGA framework has a convention of using managed resource functions > to allow parent drivers to manage the data structures allocated by the > class drivers. They use an empty *_dev_release() function to satisfy the > class driver. > > This is inconsistent with linux driver model. > > These changes remove the managed resource functions and populate the class > dev_release callback functions. They also merge the create() and register() > functions into a single register() or register_simple() function for each of > the fpga-mgr, fpga-region, and fpga-bridge class drivers. > > The new *register() functions accept an info data structure to provide > flexibility in passing optional parameters. The *register_simple() > functions support the legacy parameter list for users that don't require > the use of optional parameters. > > For more context, refer to this email thread: > > https://marc.info/?l=linux-fpga&m=162127412218557&w=2 > > I turned on the configs assocated with each of the modified files, but I > must have been missing some dependencies, because not all of them compiled. > I did a run-time test specifically with the dfl-fme infrastructure. This > would have exercised the region, bridge, and fpga-mgr frameworks. > > Changelog v7 -> v8: > - Added reviewed-by tags. > - Updated Documentation/driver-api/fpga/ files: fpga-mgr.rst, > fpga-bridge.rst, and fpga-region.rst. > > Changelog v6 -> v7: > - Update the commit messages to describe the new parameters for the > *register() functions and to mention the *register_simple() functions. > - Fix function prototypes in header file to rename dev to parent. > - Make use of the PTR_ERR_OR_ZERO() macro when possible. > - Some cleanup of comments. > - Update function defintions/prototypes to apply const to the new info > parameter. > - Verify that info->br_ops is non-null in the fpga_bridge_register() > function. > - Verify a non-null info pointer in the fpga_region_register() function. > > Changelog v5 -> v6: > - Moved FPGA manager/bridge/region optional parameters out of the ops > structure and back into the FPGA class driver structure. > - Changed fpga_*_register() function parameters to accept an info data > structure to provide flexibility in passing optional parameters. > - Added fpga_*_register_simple() functions to support current parameters > for users that don't require use of optional parameters. > > Changelog v4 -> v5: > - Rebased on top of recently accepted patches. > - Removed compat_id from the fpga_mgr_register() parameter list > and added it to the fpga_manager_ops structure. This also required > dynamically allocating the dfl-fme-ops structure in order to add > the appropriate compat_id. > - Created the fpga_region_ops data structure which is optionally passed > to fpga_region_register(). compat_id, the get_bridges() pointer, and > the priv pointer are included in the fpga_region_ops structure. > > Changelog v3 -> v4: > - Added the compat_id parameter to fpga_mgr_register() and > devm_fpga_mgr_register() to ensure that the compat_id is set before > the device_register() call. > - Added the compat_id parameter to fpga_region_register() to ensure > that the compat_id is set before the device_register() call. > - Modified the dfl_fpga_feature_devs_enumerate() function to restore > the fpga_region_register() call to the correct location. > > Changelog v2 -> v3: > - Cleaned up comment headers for fpga_mgr_register(), fpga_bridge_register(), > and fpga_region_register(). > - Fixed error return on ida_simple_get() failure for fpga_mgr_register(), > fpga_bridge_register(), and fpga_region_register(). > - Fixed error return value for fpga_bridge_register(): ERR_PTR(ret) instead > of NULL. > > Changelog v1 -> v2: > - Restored devm_fpga_mgr_register() functionality to the fpga-mgr > class driver, adapted for the combined create/register functionality. > - All previous callers of devm_fpga_mgr_register() will continue to call > devm_fpga_mgr_register(). > - replaced unnecessary ternary operators in return statements with > standard if conditions. > > Russ Weight (3): > fpga: mgr: Use standard dev_release for class driver > fpga: bridge: Use standard dev_release for class driver > fpga: region: Use standard dev_release for class driver > > Documentation/driver-api/fpga/fpga-bridge.rst | 8 +- > Documentation/driver-api/fpga/fpga-mgr.rst | 39 ++-- > Documentation/driver-api/fpga/fpga-region.rst | 8 +- > drivers/fpga/altera-cvp.c | 12 +- > drivers/fpga/altera-fpga2sdram.c | 12 +- > drivers/fpga/altera-freeze-bridge.c | 10 +- > drivers/fpga/altera-hps2fpga.c | 12 +- > drivers/fpga/altera-pr-ip-core.c | 8 +- > drivers/fpga/altera-ps-spi.c | 9 +- > drivers/fpga/dfl-fme-br.c | 10 +- > drivers/fpga/dfl-fme-mgr.c | 22 +- > drivers/fpga/dfl-fme-region.c | 17 +- > drivers/fpga/dfl.c | 12 +- > drivers/fpga/fpga-bridge.c | 138 ++++------- > drivers/fpga/fpga-mgr.c | 214 ++++++++---------- > drivers/fpga/fpga-region.c | 121 ++++------ > drivers/fpga/ice40-spi.c | 9 +- > drivers/fpga/machxo2-spi.c | 10 +- > drivers/fpga/of-fpga-region.c | 11 +- > drivers/fpga/socfpga-a10.c | 16 +- > drivers/fpga/socfpga.c | 9 +- > drivers/fpga/stratix10-soc.c | 16 +- > drivers/fpga/ts73xx-fpga.c | 9 +- > drivers/fpga/xilinx-pr-decoupler.c | 17 +- > drivers/fpga/xilinx-spi.c | 11 +- > drivers/fpga/zynq-fpga.c | 16 +- > drivers/fpga/zynqmp-fpga.c | 9 +- > include/linux/fpga/fpga-bridge.h | 33 ++- > include/linux/fpga/fpga-mgr.h | 62 +++-- > include/linux/fpga/fpga-region.h | 36 ++- > 30 files changed, 396 insertions(+), 520 deletions(-) >