From patchwork Fri Feb 3 17:06:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Pagani X-Patchwork-Id: 52570 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp960488wrn; Fri, 3 Feb 2023 09:18:25 -0800 (PST) X-Google-Smtp-Source: AK7set/nB7EHW6KdWCwlJvJVYkhsDyl5DTZNNqjCJCqWpuXc5dAy8yfofNCgD0rIcbbG2glsAnl+ X-Received: by 2002:a17:902:ca8d:b0:198:e1b1:e8b4 with SMTP id v13-20020a170902ca8d00b00198e1b1e8b4mr1247565pld.41.1675444705445; Fri, 03 Feb 2023 09:18:25 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1675444705; cv=none; d=google.com; s=arc-20160816; b=La2FJ61YI1ATlgFSOdu/GCfCmu6nedZhpneiR+wGuCFnB8dLOCSTX9+9vyyoJgXWjS UW7tCu6wnq7Keb7mTcqZGmOnpbHwhpZB1YCqxaYZB/+S695KwwZ2rjK+uHk3oe5O0HU3 X3sR1DorW1Rd/0MyVYzvzZMTu6SZqBWzD9WooEOE0pDyG5C/OJZwfDZfL/UHvGXiSbmO 8NgRhAP1BmQ7Cx6PziS5XuYjJ61RIfugCXZ89UbT+6nlCSw9vupcTFBjeVTdl9iad87+ ERAQ6X8Ax/X+tDEh052g4Svt17N77MxcpFeEiDD7D3rngc/yRbIMYQfBpYbMhPPiZ37t TP4A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=nXijhy+bLVt2oImSC5wDtd/ir3c5z1uIhiC8dhyhZro=; b=s95CYKv1ryMucoabRYuQ7qMcCUF2D1UHKdXd6qbhMbbQYOtME++DLWd9HydYbtN3vz L6hDWgrsC/O3bPurop6aW0y/eygiVuCKAVGgy3oYA7oh0T0EEUBxtgm5IoJVviLH8w5/ Wd6r46nd+Wn1yQ17Ca4lbROZ1NfiYgjxvP3z7kRaKWN0AE+g4zpXXMdllesoF7WRm13f e3OlSyEshvHXKyv9YJttN63Isp53xdheuB1KjWpwNz7tpyGOEoWn6rORlBEu+yraSTx5 6nU8HEkcUSyVV9gnF1NMS3SiNJP9s9GwESYTNH1gIIKEfAWHzcXV2AtKjL2X1+y9qJw/ w/QQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=X06ttQ8K; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n4-20020a170902e54400b001930b177a04si3093048plf.323.2023.02.03.09.18.13; Fri, 03 Feb 2023 09:18:25 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=X06ttQ8K; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233395AbjBCRIR (ORCPT + 99 others); Fri, 3 Feb 2023 12:08:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232989AbjBCRIL (ORCPT ); Fri, 3 Feb 2023 12:08:11 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B5C9A8A27 for ; Fri, 3 Feb 2023 09:07:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1675444039; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nXijhy+bLVt2oImSC5wDtd/ir3c5z1uIhiC8dhyhZro=; b=X06ttQ8KlPTVhyicR6iKpuLkV+4csxRITmp1NrJgQso21/MK8Fmw1m+a/UhTIkNXEDW14f Z1CEoat9igZFUTfHbgL7yKJxiStRsaWzb5u3D3hPcbdDpsyyKk4doMyEjkvDLyPqapZCT0 GQreuOCBV1vWdcZoetdzyT69LAuRtQ8= Received: from mail-qv1-f69.google.com (mail-qv1-f69.google.com [209.85.219.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-638-8tNwc5pmMHWQBakJH9TQUw-1; Fri, 03 Feb 2023 12:07:18 -0500 X-MC-Unique: 8tNwc5pmMHWQBakJH9TQUw-1 Received: by mail-qv1-f69.google.com with SMTP id c10-20020a05621401ea00b004c72d0e92bcso3032487qvu.12 for ; Fri, 03 Feb 2023 09:07:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nXijhy+bLVt2oImSC5wDtd/ir3c5z1uIhiC8dhyhZro=; b=kG6ft48wQxmyPe85AXDZxHa9ygKfKKB0M3mFh9Z1NjNRYUCFmPeipQgP649gpdHh4T neE+YYlnwicGvd0XSyxldajDTAvU2Re6eL3F7xDBe7CXYEDs7fp/I03QkcwOCXc6F2X6 YfzAD8xqq5EK7hKAKnPZMX97Bq3EgKNZOoSk6N73gEA0szPQMV4yhNEpMlD5ooxA9Myp x9I8ymUqTkEFXIFzNiAekC04A1S+wSUwyKHpNA8Nj2t1jqYElUQgtOkXxBrKI+GkCc+x 40KLq4vP9ITYWSxrvCjhO8lrz335G9oPmfX1KeMMHWTZ8hlf2nhVyvGqkpNeKaeNApuD ICew== X-Gm-Message-State: AO0yUKU+MJOrXim+5tJQhALqrod070zN76RsXELLg3g1u0vf3bXUEFPH ni1BGFCwwvxsPhbJQNY4cMXZs4vS/nYL5gjcnC3xhV94sP7Ut/+clRjLea6dODp9FK+0RudYDfg 1J7XOu35MXLYVSjleYn60O2c= X-Received: by 2002:a05:622a:24e:b0:3a9:8cc6:d4b2 with SMTP id c14-20020a05622a024e00b003a98cc6d4b2mr9749349qtx.5.1675444038085; Fri, 03 Feb 2023 09:07:18 -0800 (PST) X-Received: by 2002:a05:622a:24e:b0:3a9:8cc6:d4b2 with SMTP id c14-20020a05622a024e00b003a98cc6d4b2mr9749315qtx.5.1675444037771; Fri, 03 Feb 2023 09:07:17 -0800 (PST) Received: from klayman.redhat.com (net-2-34-30-183.cust.vodafonedsl.it. [2.34.30.183]) by smtp.gmail.com with ESMTPSA id b13-20020ac801cd000000b003a6a19ee4f0sm1884287qtg.33.2023.02.03.09.07.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Feb 2023 09:07:17 -0800 (PST) From: Marco Pagani To: Moritz Fischer , Wu Hao , Xu Yilun , Tom Rix Cc: Marco Pagani , linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org Subject: [RFC PATCH 2/4] fpga: add fake FPGA region Date: Fri, 3 Feb 2023 18:06:51 +0100 Message-Id: <20230203170653.414990-3-marpagan@redhat.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230203170653.414990-1-marpagan@redhat.com> References: <20230203170653.414990-1-marpagan@redhat.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756831107670050756?= X-GMAIL-MSGID: =?utf-8?q?1756831107670050756?= Add fake FPGA region platform driver with support functions. This module is part of the KUnit test suite for the FPGA subsystem. Signed-off-by: Marco Pagani --- drivers/fpga/tests/fake-fpga-region.c | 186 ++++++++++++++++++++++++++ drivers/fpga/tests/fake-fpga-region.h | 37 +++++ 2 files changed, 223 insertions(+) create mode 100644 drivers/fpga/tests/fake-fpga-region.c create mode 100644 drivers/fpga/tests/fake-fpga-region.h diff --git a/drivers/fpga/tests/fake-fpga-region.c b/drivers/fpga/tests/fake-fpga-region.c new file mode 100644 index 000000000000..095397e41837 --- /dev/null +++ b/drivers/fpga/tests/fake-fpga-region.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for fake FPGA region + * + * Copyright (C) 2023 Red Hat, Inc. All rights reserved. + * + * Author: Marco Pagani + */ + +#include +#include +#include +#include +#include +#include + +#include "fake-fpga-region.h" + +#define FAKE_FPGA_REGION_DEV_NAME "fake_fpga_region" + +struct fake_region_priv { + int id; + struct kunit *test; +}; + +struct fake_region_data { + struct fpga_manager *mgr; + struct kunit *test; +}; + +/** + * fake_fpga_region_register - register a fake FPGA region + * @region_ctx: fake FPGA region context data structure. + * @test: KUnit test context object. + * + * Return: 0 if registration succeeded, an error code otherwise. + */ +int fake_fpga_region_register(struct fake_fpga_region *region_ctx, + struct fpga_manager *mgr, struct kunit *test) +{ + struct fake_region_data pdata; + struct fake_region_priv *priv; + int ret; + + pdata.mgr = mgr; + pdata.test = test; + + region_ctx->pdev = platform_device_alloc(FAKE_FPGA_REGION_DEV_NAME, + PLATFORM_DEVID_AUTO); + if (IS_ERR(region_ctx->pdev)) { + pr_err("Fake FPGA region device allocation failed\n"); + return -ENOMEM; + } + + platform_device_add_data(region_ctx->pdev, &pdata, sizeof(pdata)); + + ret = platform_device_add(region_ctx->pdev); + if (ret) { + pr_err("Fake FPGA region device add failed\n"); + platform_device_put(region_ctx->pdev); + return ret; + } + + region_ctx->region = platform_get_drvdata(region_ctx->pdev); + + if (test) { + priv = region_ctx->region->priv; + kunit_info(test, "Fake FPGA region %d registered\n", priv->id); + } + + return 0; +} +EXPORT_SYMBOL_GPL(fake_fpga_region_register); + +/** + * fake_fpga_region_unregister - unregister a fake FPGA region + * @region_ctx: fake FPGA region context data structure. + */ +void fake_fpga_region_unregister(struct fake_fpga_region *region_ctx) +{ + struct fake_region_priv *priv; + struct kunit *test; + int id; + + priv = region_ctx->region->priv; + test = priv->test; + id = priv->id; + + if (region_ctx->pdev) { + platform_device_unregister(region_ctx->pdev); + if (test) + kunit_info(test, "Fake FPGA region %d unregistered\n", id); + } +} +EXPORT_SYMBOL_GPL(fake_fpga_region_unregister); + +/** + * fake_fpga_region_add_bridge - add a bridge to a fake FPGA region + * @region_ctx: fake FPGA region context data structure. + * @bridge: FPGA bridge. + * + * Return: 0 if registration succeeded, an error code otherwise. + */ +int fake_fpga_region_add_bridge(struct fake_fpga_region *region_ctx, + struct fpga_bridge *bridge) +{ + struct fake_region_priv *priv; + int ret; + + priv = region_ctx->region->priv; + + ret = fpga_bridge_get_to_list(bridge->dev.parent, NULL, + ®ion_ctx->region->bridge_list); + + if (priv->test && !ret) + kunit_info(priv->test, "Bridge added to fake FPGA region %d\n", + priv->id); + + return ret; +} +EXPORT_SYMBOL_GPL(fake_fpga_region_add_bridge); + +static int fake_fpga_region_probe(struct platform_device *pdev) +{ + struct device *dev; + struct fpga_region *region; + struct fpga_manager *mgr; + struct fake_region_data *pdata; + struct fake_region_priv *priv; + static int id_count; + + dev = &pdev->dev; + pdata = dev_get_platdata(dev); + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mgr = fpga_mgr_get(pdata->mgr->dev.parent); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); + + /* + * No get_bridges() method since the bridges list is + * pre-built using fake_fpga_region_add_bridge() + */ + region = fpga_region_register(dev, mgr, NULL); + if (IS_ERR(region)) { + fpga_mgr_put(mgr); + return PTR_ERR(region); + } + + priv->test = pdata->test; + priv->id = id_count++; + region->priv = priv; + + platform_set_drvdata(pdev, region); + + return 0; +} + +static int fake_fpga_region_remove(struct platform_device *pdev) +{ + struct fpga_region *region = platform_get_drvdata(pdev); + struct fpga_manager *mgr = region->mgr; + + fpga_mgr_put(mgr); + fpga_bridges_put(®ion->bridge_list); + fpga_region_unregister(region); + + return 0; +} + +static struct platform_driver fake_fpga_region_drv = { + .driver = { + .name = FAKE_FPGA_REGION_DEV_NAME + }, + .probe = fake_fpga_region_probe, + .remove = fake_fpga_region_remove, +}; + +module_platform_driver(fake_fpga_region_drv); + +MODULE_AUTHOR("Marco Pagani "); +MODULE_DESCRIPTION("Fake FPGA Bridge"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/fpga/tests/fake-fpga-region.h b/drivers/fpga/tests/fake-fpga-region.h new file mode 100644 index 000000000000..55b2df3f04ba --- /dev/null +++ b/drivers/fpga/tests/fake-fpga-region.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Header file for fake FPGA region + * + * Copyright (C) 2023 Red Hat, Inc. All rights reserved. + * + * Author: Marco Pagani + */ + +#ifndef __FPGA_FAKE_RGN_H +#define __FPGA_FAKE_RGN_H + +#include +#include +#include +#include + +/** + * struct fake_fpga_region - fake FPGA region context data structure + * + * @region: FPGA region. + * @pdev: platform device of the FPGA region. + */ +struct fake_fpga_region { + struct fpga_region *region; + struct platform_device *pdev; +}; + +int fake_fpga_region_register(struct fake_fpga_region *region_ctx, + struct fpga_manager *mgr, struct kunit *test); + +int fake_fpga_region_add_bridge(struct fake_fpga_region *region_ctx, + struct fpga_bridge *bridge); + +void fake_fpga_region_unregister(struct fake_fpga_region *region_ctx); + +#endif /* __FPGA_FAKE_RGN_H */