From patchwork Wed May 12 01:53:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhi Hou X-Patchwork-Id: 12252505 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 4C4E8C433B4 for ; Wed, 12 May 2021 01:59:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 148D8616E9 for ; Wed, 12 May 2021 01:59:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229996AbhELCBD (ORCPT ); Tue, 11 May 2021 22:01:03 -0400 Received: from mail-bn8nam11on2069.outbound.protection.outlook.com ([40.107.236.69]:48864 "EHLO NAM11-BN8-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229945AbhELCBD (ORCPT ); Tue, 11 May 2021 22:01:03 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=lXNIteHBdiKGUuQMsdWEFzlK0ur19V9RCfMUqDTbhLjlJEfU6GFe1Hk340uPFPSFmIMJT0M75sNHrYOD2EC5d0aJMRYIdIILGJ6lkRZ7InY3CQl5XZdDFzUb3ncP8vLjD6qff7ZwdTN62VOHmRiTylGRu0YBc+xKS9ECSEvueebc/K+WRO0Bh4MeOpIgvv5mcqiD9ckjzjdyxX7k/dzz25k2n3N0BoBi5d2u1mtqDuCMlnvIGQjsC7J7m49rXYA69UdT6uhCWlnWVX5aOTMe3m28btg2G4KUiSRIt27Ej0UIJf5YS0kCd8rqMQOFDyy9/AyAKDKn4nOn1LkegsjYLw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IfGg0cSy1pPKBMaBF7KqARl4Dptho6+k1qcM89bQ1/E=; b=hpUdvghvG8ya4TQ+7yPjzby6+7PpG9Fe0tQcrcnLvqJy9gKZxOegmGQ7fBvs5y9hD0oq5dT2Y9+H/fWERkA4Q4DJyga3AkY3UAA61a7BLp2weBTR5l8A4aI7XWhkUcU6BHDOLQnQ/wem//cSXGKqonYNOuOnXatUmca9Vg1THob2I7MipNRJg20H3Vy8YebXPXHwJAPOeIqMw1iC1x+yC4SofQv2aitgchmrmSzL9bEmufg/gD2xaZrhzVoNvVAkeaArN9A2n8HwWFg/3oooMqkA3ghnGiQQD//hgc7QaOeAq3orWGeAmFajUAPP9A92hCtRs1C9uQen28Zwnq/tdg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 149.199.62.198) smtp.rcpttodomain=kernel.org smtp.mailfrom=xilinx.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=xilinx.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xilinx.onmicrosoft.com; s=selector2-xilinx-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IfGg0cSy1pPKBMaBF7KqARl4Dptho6+k1qcM89bQ1/E=; b=NVqRGY5yQyMMCg9ItSaKUTX5wlvqVlJGS+aQr+B/C5fu6OnMpp0iJGmjdLXdhS4rQnBP93i0KeuyyQkIUXUOnSGiwPJL3+PqlIjux4PBUCW8Ks2vCUIasXXku2xLyur2WuU0bnNyMnbkY2ycbuXB8/6JKTTYFSfp1vAt0YPzikQ= Received: from BN6PR18CA0001.namprd18.prod.outlook.com (2603:10b6:404:121::11) by SN6PR02MB5615.namprd02.prod.outlook.com (2603:10b6:805:ea::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.26; Wed, 12 May 2021 01:59:52 +0000 Received: from BN1NAM02FT035.eop-nam02.prod.protection.outlook.com (2603:10b6:404:121:cafe::9) by BN6PR18CA0001.outlook.office365.com (2603:10b6:404:121::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.25 via Frontend Transport; Wed, 12 May 2021 01:59:52 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 149.199.62.198) smtp.mailfrom=xilinx.com; kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=pass action=none header.from=xilinx.com; Received-SPF: Pass (protection.outlook.com: domain of xilinx.com designates 149.199.62.198 as permitted sender) receiver=protection.outlook.com; client-ip=149.199.62.198; helo=xsj-pvapexch01.xlnx.xilinx.com; Received: from xsj-pvapexch01.xlnx.xilinx.com (149.199.62.198) by BN1NAM02FT035.mail.protection.outlook.com (10.13.2.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4065.21 via Frontend Transport; Wed, 12 May 2021 01:59:51 +0000 Received: from xsj-pvapexch02.xlnx.xilinx.com (172.19.86.41) by xsj-pvapexch01.xlnx.xilinx.com (172.19.86.40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 11 May 2021 18:59:31 -0700 Received: from smtp.xilinx.com (172.19.127.95) by xsj-pvapexch02.xlnx.xilinx.com (172.19.86.41) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Tue, 11 May 2021 18:59:31 -0700 Envelope-to: mdf@kernel.org, robh@kernel.org, trix@redhat.com, devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Received: from [172.19.72.212] (port=35734 helo=xsj-xw9400.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1lge9r-0001dk-A9; Tue, 11 May 2021 18:59:31 -0700 Received: by xsj-xw9400.xilinx.com (Postfix, from userid 21952) id 8ED58600130; Tue, 11 May 2021 18:53:45 -0700 (PDT) From: Lizhi Hou To: CC: Lizhi Hou , , , , , , , , , , , Max Zhen Subject: [PATCH V6 XRT Alveo 11/20] fpga: xrt: fpga-mgr and region implementation for xclbin download Date: Tue, 11 May 2021 18:53:30 -0700 Message-ID: <20210512015339.5649-12-lizhi.hou@xilinx.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210512015339.5649-1-lizhi.hou@xilinx.com> References: <20210512015339.5649-1-lizhi.hou@xilinx.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7cf5df2e-6ef7-42f3-caac-08d914e9a193 X-MS-TrafficTypeDiagnostic: SN6PR02MB5615: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:608; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.62.198;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapexch01.xlnx.xilinx.com;PTR:unknown-62-198.xilinx.com;CAT:NONE;SFS:(4636009)(376002)(346002)(396003)(136003)(39850400004)(46966006)(36840700001)(8936002)(36860700001)(478600001)(7636003)(6266002)(30864003)(4326008)(356005)(186003)(316002)(2906002)(36906005)(8676002)(6666004)(47076005)(107886003)(5660300002)(82740400003)(83380400001)(26005)(1076003)(42186006)(36756003)(44832011)(336012)(70206006)(2616005)(6916009)(70586007)(82310400003)(54906003)(426003);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 May 2021 01:59:51.8909 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7cf5df2e-6ef7-42f3-caac-08d914e9a193 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: BN1NAM02FT035.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR02MB5615 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org fpga-mgr and region implementation for xclbin download which will be called from main xrt driver Signed-off-by: Sonal Santan Signed-off-by: Max Zhen Signed-off-by: Lizhi Hou Reviewed-by: Tom Rix --- drivers/fpga/xrt/mgmt/xmgmt-main-region.c | 483 ++++++++++++++++++++++ drivers/fpga/xrt/mgmt/xrt-mgr.c | 190 +++++++++ drivers/fpga/xrt/mgmt/xrt-mgr.h | 16 + 3 files changed, 689 insertions(+) create mode 100644 drivers/fpga/xrt/mgmt/xmgmt-main-region.c create mode 100644 drivers/fpga/xrt/mgmt/xrt-mgr.c create mode 100644 drivers/fpga/xrt/mgmt/xrt-mgr.h diff --git a/drivers/fpga/xrt/mgmt/xmgmt-main-region.c b/drivers/fpga/xrt/mgmt/xmgmt-main-region.c new file mode 100644 index 000000000000..6e6a16b13258 --- /dev/null +++ b/drivers/fpga/xrt/mgmt/xmgmt-main-region.c @@ -0,0 +1,483 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * FPGA Region Support for Xilinx Alveo + * + * Copyright (C) 2020-2021 Xilinx, Inc. + * + * Authors: Lizhi.Hou@xilinx.com + */ + +#include +#include +#include +#include +#include "metadata.h" +#include "xleaf.h" +#include "xleaf/axigate.h" +#include "xclbin-helper.h" +#include "xmgmt.h" + +struct xmgmt_bridge { + struct xrt_device *xdev; + const char *bridge_name; +}; + +struct xmgmt_region { + struct xrt_device *xdev; + struct fpga_region *region; + struct fpga_compat_id compat_id; + uuid_t interface_uuid; + struct fpga_bridge *bridge; + int group_instance; + uuid_t depend_uuid; + struct list_head list; +}; + +struct xmgmt_region_match_arg { + struct xrt_device *xdev; + uuid_t *uuids; + u32 uuid_num; +}; + +static int xmgmt_br_enable_set(struct fpga_bridge *bridge, bool enable) +{ + struct xmgmt_bridge *br_data = (struct xmgmt_bridge *)bridge->priv; + struct xrt_device *axigate_leaf; + int rc; + + axigate_leaf = xleaf_get_leaf_by_epname(br_data->xdev, br_data->bridge_name); + if (!axigate_leaf) { + xrt_err(br_data->xdev, "failed to get leaf %s", + br_data->bridge_name); + return -ENOENT; + } + + if (enable) + rc = xleaf_call(axigate_leaf, XRT_AXIGATE_OPEN, NULL); + else + rc = xleaf_call(axigate_leaf, XRT_AXIGATE_CLOSE, NULL); + + if (rc) { + xrt_err(br_data->xdev, "failed to %s gate %s, rc %d", + (enable ? "free" : "freeze"), br_data->bridge_name, + rc); + } + + xleaf_put_leaf(br_data->xdev, axigate_leaf); + + return rc; +} + +static const struct fpga_bridge_ops xmgmt_bridge_ops = { + .enable_set = xmgmt_br_enable_set +}; + +static void xmgmt_destroy_bridge(struct fpga_bridge *br) +{ + struct xmgmt_bridge *br_data = br->priv; + + if (!br_data) + return; + + xrt_info(br_data->xdev, "destroy fpga bridge %s", br_data->bridge_name); + fpga_bridge_unregister(br); + + devm_kfree(DEV(br_data->xdev), br_data); + + fpga_bridge_free(br); +} + +static struct fpga_bridge *xmgmt_create_bridge(struct xrt_device *xdev, + char *dtb) +{ + struct fpga_bridge *br = NULL; + struct xmgmt_bridge *br_data; + const char *gate; + int rc; + + br_data = devm_kzalloc(DEV(xdev), sizeof(*br_data), GFP_KERNEL); + if (!br_data) + return NULL; + br_data->xdev = xdev; + + br_data->bridge_name = XRT_MD_NODE_GATE_ULP; + rc = xrt_md_find_endpoint(&xdev->dev, dtb, XRT_MD_NODE_GATE_ULP, + NULL, &gate); + if (rc) { + br_data->bridge_name = XRT_MD_NODE_GATE_PLP; + rc = xrt_md_find_endpoint(&xdev->dev, dtb, XRT_MD_NODE_GATE_PLP, + NULL, &gate); + } + if (rc) { + xrt_err(xdev, "failed to get axigate, rc %d", rc); + goto failed; + } + + br = fpga_bridge_create(DEV(xdev), br_data->bridge_name, + &xmgmt_bridge_ops, br_data); + if (!br) { + xrt_err(xdev, "failed to create bridge"); + goto failed; + } + + rc = fpga_bridge_register(br); + if (rc) { + xrt_err(xdev, "failed to register bridge, rc %d", rc); + goto failed; + } + + xrt_info(xdev, "created fpga bridge %s", br_data->bridge_name); + + return br; + +failed: + if (br) + fpga_bridge_free(br); + if (br_data) + devm_kfree(DEV(xdev), br_data); + + return NULL; +} + +static void xmgmt_destroy_region(struct fpga_region *region) +{ + struct xmgmt_region *r_data = region->priv; + + xrt_info(r_data->xdev, "destroy fpga region %llx.%llx", + region->compat_id->id_h, region->compat_id->id_l); + + fpga_region_unregister(region); + + if (r_data->group_instance > 0) + xleaf_destroy_group(r_data->xdev, r_data->group_instance); + + if (r_data->bridge) + xmgmt_destroy_bridge(r_data->bridge); + + if (r_data->region->info) { + fpga_image_info_free(r_data->region->info); + r_data->region->info = NULL; + } + + fpga_region_free(region); + + devm_kfree(DEV(r_data->xdev), r_data); +} + +static int xmgmt_region_match(struct device *dev, const void *data) +{ + const struct xmgmt_region_match_arg *arg = data; + const struct fpga_region *match_region; + uuid_t compat_uuid; + int i; + + if (dev->parent != &arg->xdev->dev) + return false; + + match_region = to_fpga_region(dev); + /* + * The device tree provides both parent and child uuids for an + * xclbin in one array. Here we try both uuids to see if it matches + * with target region's compat_id. Strictly speaking we should + * only match xclbin's parent uuid with target region's compat_id + * but given the uuids by design are unique comparing with both + * does not hurt. + */ + import_uuid(&compat_uuid, (const char *)match_region->compat_id); + for (i = 0; i < arg->uuid_num; i++) { + if (uuid_equal(&compat_uuid, &arg->uuids[i])) + return true; + } + + return false; +} + +static int xmgmt_region_match_base(struct device *dev, const void *data) +{ + const struct xmgmt_region_match_arg *arg = data; + const struct fpga_region *match_region; + const struct xmgmt_region *r_data; + + if (dev->parent != &arg->xdev->dev) + return false; + + match_region = to_fpga_region(dev); + r_data = match_region->priv; + if (uuid_is_null(&r_data->depend_uuid)) + return true; + + return false; +} + +static int xmgmt_region_match_by_uuid(struct device *dev, const void *data) +{ + const struct xmgmt_region_match_arg *arg = data; + const struct fpga_region *match_region; + const struct xmgmt_region *r_data; + + if (dev->parent != &arg->xdev->dev) + return false; + + if (arg->uuid_num != 1) + return false; + + match_region = to_fpga_region(dev); + r_data = match_region->priv; + if (uuid_equal(&r_data->depend_uuid, arg->uuids)) + return true; + + return false; +} + +static void xmgmt_region_cleanup(struct fpga_region *region) +{ + struct xmgmt_region *r_data = region->priv, *pdata, *temp; + struct xrt_device *xdev = r_data->xdev; + struct xmgmt_region_match_arg arg = { 0 }; + struct fpga_region *match_region = NULL; + struct device *start_dev = NULL; + LIST_HEAD(free_list); + uuid_t compat_uuid; + + list_add_tail(&r_data->list, &free_list); + arg.xdev = xdev; + arg.uuid_num = 1; + arg.uuids = &compat_uuid; + + /* find all regions depending on this region */ + list_for_each_entry_safe(pdata, temp, &free_list, list) { + import_uuid(arg.uuids, (const char *)pdata->region->compat_id); + start_dev = NULL; + while ((match_region = fpga_region_class_find(start_dev, &arg, + xmgmt_region_match_by_uuid))) { + pdata = match_region->priv; + list_add_tail(&pdata->list, &free_list); + start_dev = &match_region->dev; + put_device(&match_region->dev); + } + } + + list_del(&r_data->list); + + list_for_each_entry_safe_reverse(pdata, temp, &free_list, list) + xmgmt_destroy_region(pdata->region); + + if (r_data->group_instance > 0) { + xleaf_destroy_group(xdev, r_data->group_instance); + r_data->group_instance = -1; + } + if (r_data->region->info) { + fpga_image_info_free(r_data->region->info); + r_data->region->info = NULL; + } +} + +void xmgmt_region_cleanup_all(struct xrt_device *xdev) +{ + struct xmgmt_region_match_arg arg = { 0 }; + struct fpga_region *base_region; + + arg.xdev = xdev; + + while ((base_region = fpga_region_class_find(NULL, &arg, xmgmt_region_match_base))) { + put_device(&base_region->dev); + + xmgmt_region_cleanup(base_region); + xmgmt_destroy_region(base_region); + } +} + +/* + * Program a region with a xclbin image. Bring up the subdevs and the + * group object to contain the subdevs. + */ +static int xmgmt_region_program(struct fpga_region *region, const void *xclbin, char *dtb) +{ + const struct axlf *xclbin_obj = xclbin; + struct fpga_image_info *info; + struct xrt_device *xdev; + struct xmgmt_region *r_data; + int rc; + + r_data = region->priv; + xdev = r_data->xdev; + + info = fpga_image_info_alloc(&xdev->dev); + if (!info) + return -ENOMEM; + + info->buf = xclbin; + info->count = xclbin_obj->header.length; + info->flags |= FPGA_MGR_PARTIAL_RECONFIG; + region->info = info; + rc = fpga_region_program_fpga(region); + if (rc) { + xrt_err(xdev, "programming xclbin failed, rc %d", rc); + return rc; + } + + /* free bridges to allow reprogram */ + if (region->get_bridges) + fpga_bridges_put(®ion->bridge_list); + + /* + * Next bringup the subdevs for this region which will be managed by + * its own group object. + */ + r_data->group_instance = xleaf_create_group(xdev, dtb); + if (r_data->group_instance < 0) { + xrt_err(xdev, "failed to create group, rc %d", + r_data->group_instance); + rc = r_data->group_instance; + return rc; + } + + rc = xleaf_wait_for_group_bringup(xdev); + if (rc) + xrt_err(xdev, "group bringup failed, rc %d", rc); + return rc; +} + +static int xmgmt_get_bridges(struct fpga_region *region) +{ + struct xmgmt_region *r_data = region->priv; + struct device *dev = &r_data->xdev->dev; + + return fpga_bridge_get_to_list(dev, region->info, ®ion->bridge_list); +} + +/* + * Program/create FPGA regions based on input xclbin file. + * 1. Identify a matching existing region for this xclbin + * 2. Tear down any previous objects for the found region + * 3. Program this region with input xclbin + * 4. Iterate over this region's interface uuids to determine if it defines any + * child region. Create fpga_region for the child region. + */ +int xmgmt_process_xclbin(struct xrt_device *xdev, + struct fpga_manager *fmgr, + const struct axlf *xclbin, + enum provider_kind kind) +{ + struct fpga_region *region, *compat_region = NULL; + struct xmgmt_region_match_arg arg = { 0 }; + struct xmgmt_region *r_data; + uuid_t compat_uuid; + char *dtb = NULL; + int rc, i; + + rc = xrt_xclbin_get_metadata(DEV(xdev), xclbin, &dtb); + if (rc) { + xrt_err(xdev, "failed to get dtb: %d", rc); + goto failed; + } + + rc = xrt_md_get_interface_uuids(DEV(xdev), dtb, 0, NULL); + if (rc < 0) { + xrt_err(xdev, "failed to get intf uuid"); + rc = -EINVAL; + goto failed; + } + arg.uuid_num = rc; + arg.uuids = kcalloc(arg.uuid_num, sizeof(uuid_t), GFP_KERNEL); + if (!arg.uuids) { + rc = -ENOMEM; + goto failed; + } + arg.xdev = xdev; + + rc = xrt_md_get_interface_uuids(DEV(xdev), dtb, arg.uuid_num, arg.uuids); + if (rc != arg.uuid_num) { + xrt_err(xdev, "only get %d uuids, expect %d", rc, arg.uuid_num); + rc = -EINVAL; + goto failed; + } + + /* if this is not base firmware, search for a compatible region */ + if (kind != XMGMT_BLP) { + compat_region = fpga_region_class_find(NULL, &arg, xmgmt_region_match); + if (!compat_region) { + xrt_err(xdev, "failed to get compatible region"); + rc = -ENOENT; + goto failed; + } + + xmgmt_region_cleanup(compat_region); + + rc = xmgmt_region_program(compat_region, xclbin, dtb); + if (rc) { + xrt_err(xdev, "failed to program region"); + goto failed; + } + } + + if (compat_region) + import_uuid(&compat_uuid, (const char *)compat_region->compat_id); + + /* create all the new regions contained in this xclbin */ + for (i = 0; i < arg.uuid_num; i++) { + if (compat_region && uuid_equal(&compat_uuid, &arg.uuids[i])) { + /* region for this interface already exists */ + continue; + } + + region = fpga_region_create(DEV(xdev), fmgr, xmgmt_get_bridges); + if (!region) { + xrt_err(xdev, "failed to create fpga region"); + rc = -EFAULT; + goto failed; + } + r_data = devm_kzalloc(DEV(xdev), sizeof(*r_data), GFP_KERNEL); + if (!r_data) { + rc = -ENOMEM; + fpga_region_free(region); + goto failed; + } + r_data->xdev = xdev; + r_data->region = region; + r_data->group_instance = -1; + uuid_copy(&r_data->interface_uuid, &arg.uuids[i]); + if (compat_region) + import_uuid(&r_data->depend_uuid, (const char *)compat_region->compat_id); + r_data->bridge = xmgmt_create_bridge(xdev, dtb); + if (!r_data->bridge) { + xrt_err(xdev, "failed to create fpga bridge"); + rc = -EFAULT; + devm_kfree(DEV(xdev), r_data); + fpga_region_free(region); + goto failed; + } + + region->compat_id = &r_data->compat_id; + export_uuid((char *)region->compat_id, &r_data->interface_uuid); + region->priv = r_data; + + rc = fpga_region_register(region); + if (rc) { + xrt_err(xdev, "failed to register fpga region"); + xmgmt_destroy_bridge(r_data->bridge); + fpga_region_free(region); + devm_kfree(DEV(xdev), r_data); + goto failed; + } + + xrt_info(xdev, "created fpga region %llx.%llx", + region->compat_id->id_h, region->compat_id->id_l); + } + + if (compat_region) + put_device(&compat_region->dev); + vfree(dtb); + kfree(arg.uuids); + return 0; + +failed: + if (compat_region) { + put_device(&compat_region->dev); + xmgmt_region_cleanup(compat_region); + } + + vfree(dtb); + kfree(arg.uuids); + return rc; +} diff --git a/drivers/fpga/xrt/mgmt/xrt-mgr.c b/drivers/fpga/xrt/mgmt/xrt-mgr.c new file mode 100644 index 000000000000..41263a033d9d --- /dev/null +++ b/drivers/fpga/xrt/mgmt/xrt-mgr.c @@ -0,0 +1,190 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * FPGA Manager Support for Xilinx Alveo + * + * Copyright (C) 2020-2021 Xilinx, Inc. + * + * Authors: Sonal.Santan@xilinx.com + */ + +#include +#include +#include +#include +#include + +#include "xclbin-helper.h" +#include "xleaf.h" +#include "xrt-mgr.h" +#include "xleaf/axigate.h" +#include "xleaf/icap.h" +#include "xmgmt.h" + +struct xfpga_class { + struct xrt_device *xdev; + char name[64]; +}; + +/* + * xclbin download plumbing -- find the download subsystem, ICAP and + * pass the xclbin for heavy lifting + */ +static int xmgmt_download_bitstream(struct xrt_device *xdev, + const struct axlf *xclbin) + +{ + struct xclbin_bit_head_info bit_header = { 0 }; + struct xrt_device *icap_leaf = NULL; + struct xrt_icap_wr arg; + char *bitstream = NULL; + u64 bit_len; + int ret; + + ret = xrt_xclbin_get_section(DEV(xdev), xclbin, BITSTREAM, (void **)&bitstream, &bit_len); + if (ret) { + xrt_err(xdev, "bitstream not found"); + return -ENOENT; + } + ret = xrt_xclbin_parse_bitstream_header(DEV(xdev), bitstream, + XCLBIN_HWICAP_BITFILE_BUF_SZ, + &bit_header); + if (ret) { + ret = -EINVAL; + xrt_err(xdev, "invalid bitstream header"); + goto fail; + } + if (bit_header.header_length + bit_header.bitstream_length > bit_len) { + ret = -EINVAL; + xrt_err(xdev, "invalid bitstream length. header %d, bitstream %d, section len %lld", + bit_header.header_length, bit_header.bitstream_length, bit_len); + goto fail; + } + + icap_leaf = xleaf_get_leaf_by_id(xdev, XRT_SUBDEV_ICAP, XRT_INVALID_DEVICE_INST); + if (!icap_leaf) { + ret = -ENODEV; + xrt_err(xdev, "icap does not exist"); + goto fail; + } + arg.xiiw_bit_data = bitstream + bit_header.header_length; + arg.xiiw_data_len = bit_header.bitstream_length; + ret = xleaf_call(icap_leaf, XRT_ICAP_WRITE, &arg); + if (ret) { + xrt_err(xdev, "write bitstream failed, ret = %d", ret); + xleaf_put_leaf(xdev, icap_leaf); + goto fail; + } + + xleaf_put_leaf(xdev, icap_leaf); + vfree(bitstream); + + return 0; + +fail: + vfree(bitstream); + + return ret; +} + +/* + * There is no HW prep work we do here since we need the full + * xclbin for its sanity check. + */ +static int xmgmt_pr_write_init(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count) +{ + const struct axlf *bin = (const struct axlf *)buf; + struct xfpga_class *obj = mgr->priv; + + if (!(info->flags & FPGA_MGR_PARTIAL_RECONFIG)) { + xrt_info(obj->xdev, "%s only supports partial reconfiguration\n", obj->name); + return -EINVAL; + } + + if (count < sizeof(struct axlf)) + return -EINVAL; + + if (count > bin->header.length) + return -EINVAL; + + xrt_info(obj->xdev, "Prepare download of xclbin %pUb of length %lld B", + &bin->header.uuid, bin->header.length); + + return 0; +} + +/* + * The implementation requries full xclbin image before we can start + * programming the hardware via ICAP subsystem. The full image is required + * for checking the validity of xclbin and walking the sections to + * discover the bitstream. + */ +static int xmgmt_pr_write(struct fpga_manager *mgr, + const char *buf, size_t count) +{ + const struct axlf *bin = (const struct axlf *)buf; + struct xfpga_class *obj = mgr->priv; + + if (bin->header.length != count) + return -EINVAL; + + return xmgmt_download_bitstream((void *)obj->xdev, bin); +} + +static int xmgmt_pr_write_complete(struct fpga_manager *mgr, + struct fpga_image_info *info) +{ + const struct axlf *bin = (const struct axlf *)info->buf; + struct xfpga_class *obj = mgr->priv; + + xrt_info(obj->xdev, "Finished download of xclbin %pUb", + &bin->header.uuid); + return 0; +} + +static enum fpga_mgr_states xmgmt_pr_state(struct fpga_manager *mgr) +{ + return FPGA_MGR_STATE_UNKNOWN; +} + +static const struct fpga_manager_ops xmgmt_pr_ops = { + .initial_header_size = sizeof(struct axlf), + .write_init = xmgmt_pr_write_init, + .write = xmgmt_pr_write, + .write_complete = xmgmt_pr_write_complete, + .state = xmgmt_pr_state, +}; + +struct fpga_manager *xmgmt_fmgr_probe(struct xrt_device *xdev) +{ + struct xfpga_class *obj = devm_kzalloc(DEV(xdev), sizeof(struct xfpga_class), + GFP_KERNEL); + struct fpga_manager *fmgr = NULL; + int ret = 0; + + if (!obj) + return ERR_PTR(-ENOMEM); + + snprintf(obj->name, sizeof(obj->name), "Xilinx Alveo FPGA Manager"); + obj->xdev = xdev; + fmgr = fpga_mgr_create(&xdev->dev, + obj->name, + &xmgmt_pr_ops, + obj); + if (!fmgr) + return ERR_PTR(-ENOMEM); + + ret = fpga_mgr_register(fmgr); + if (ret) { + fpga_mgr_free(fmgr); + return ERR_PTR(ret); + } + return fmgr; +} + +int xmgmt_fmgr_remove(struct fpga_manager *fmgr) +{ + fpga_mgr_unregister(fmgr); + return 0; +} diff --git a/drivers/fpga/xrt/mgmt/xrt-mgr.h b/drivers/fpga/xrt/mgmt/xrt-mgr.h new file mode 100644 index 000000000000..a3d1ab1c34f0 --- /dev/null +++ b/drivers/fpga/xrt/mgmt/xrt-mgr.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2021 Xilinx, Inc. + * + * Authors: Sonal.Santan@xilinx.com + */ + +#ifndef _XRT_MGR_H_ +#define _XRT_MGR_H_ + +#include + +struct fpga_manager *xmgmt_fmgr_probe(struct xrt_device *xdev); +int xmgmt_fmgr_remove(struct fpga_manager *fmgr); + +#endif /* _XRT_MGR_H_ */