From patchwork Thu Apr 20 14:09:55 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Tull X-Patchwork-Id: 9690629 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 953E160326 for ; Thu, 20 Apr 2017 14:15:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C81628471 for ; Thu, 20 Apr 2017 14:15:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 818A028479; Thu, 20 Apr 2017 14:15:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2F00F28471 for ; Thu, 20 Apr 2017 14:15:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1032411AbdDTOPS (ORCPT ); Thu, 20 Apr 2017 10:15:18 -0400 Received: from mail.kernel.org ([198.145.29.136]:60092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1032173AbdDTOKn (ORCPT ); Thu, 20 Apr 2017 10:10:43 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ADBC12015A; Thu, 20 Apr 2017 14:10:41 +0000 (UTC) Received: from localhost.localdomain (user-0ccsrjt.cable.mindspring.com [24.206.110.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3C139201B9; Thu, 20 Apr 2017 14:10:40 +0000 (UTC) From: Alan Tull To: Moritz Fischer Cc: Alan Tull , linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org Subject: [PATCH v2 10/16] fpga: region: use image info as parameter for programming region Date: Thu, 20 Apr 2017 09:09:55 -0500 Message-Id: <1492697401-11211-11-git-send-email-atull@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1492697401-11211-1-git-send-email-atull@kernel.org> References: <1492697401-11211-1-git-send-email-atull@kernel.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use FPGA image info as a parameter when region code is programming the FPGA. This is a baby step in refactoring the FPGA region code to separate out common FPGA region code from FPGA region Device Tree overlay support. Signed-off-by: Alan Tull --- v2: split out from another patch --- drivers/fpga/fpga-region.c | 26 ++++++++++++++++---------- include/linux/fpga/fpga-mgr.h | 4 ++++ 2 files changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index d6f2313..1892126 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -223,16 +223,21 @@ static int fpga_region_get_bridges(struct fpga_region *region, /** * fpga_region_program_fpga - program FPGA * @region: FPGA region - * @overlay: device node of the overlay - * Program an FPGA using information in the region's fpga image info. + * @info: FPGA image info + * Program an FPGA using fpga image info. * Return 0 for success or negative error code. */ static int fpga_region_program_fpga(struct fpga_region *region, - struct device_node *overlay) + struct fpga_image_info *info) { struct device *dev = ®ion->dev; int ret; + if (region->info) { + dev_err(dev, "region already programmed\n"); + return PTR_ERR(region); + } + region = fpga_region_get(region); if (IS_ERR(region)) { dev_err(dev, "failed to get FPGA region\n"); @@ -245,7 +250,7 @@ static int fpga_region_program_fpga(struct fpga_region *region, goto err_put_region; } - ret = fpga_region_get_bridges(region, overlay); + ret = fpga_region_get_bridges(region, info->overlay); if (ret) { dev_err(dev, "failed to get FPGA bridges\n"); goto err_unlock_mgr; @@ -257,7 +262,7 @@ static int fpga_region_program_fpga(struct fpga_region *region, goto err_put_br; } - ret = fpga_mgr_load(region->mgr, region->info); + ret = fpga_mgr_load(region->mgr, info); if (ret) { dev_err(dev, "failed to load FPGA image\n"); goto err_put_br; @@ -269,6 +274,8 @@ static int fpga_region_program_fpga(struct fpga_region *region, goto err_put_br; } + region->info = info; + fpga_mgr_unlock(region->mgr); fpga_region_put(region); @@ -373,6 +380,8 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region, if (!info) return -ENOMEM; + info->overlay = nd->overlay; + /* Read FPGA region properties from the overlay */ if (of_property_read_bool(nd->overlay, "partial-fpga-config")) info->flags |= FPGA_MGR_PARTIAL_RECONFIG; @@ -420,12 +429,9 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region, return -EINVAL; } - region->info = info; - ret = fpga_region_program_fpga(region, nd->overlay); - if (ret) { + ret = fpga_region_program_fpga(region, info); + if (ret) fpga_image_info_free(®ion->dev, info); - region->info = NULL; - } return ret; } diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index 4e14bdb..66d0e32 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -84,6 +84,7 @@ enum fpga_mgr_states { * @sgt: scatter/gather table containing FPGA image * @buf: contiguous buffer containing FPGA image * @count: size of buf + * @overlay: Device Tree overlay */ struct fpga_image_info { u32 flags; @@ -94,6 +95,9 @@ struct fpga_image_info { struct sg_table *sgt; const char *buf; size_t count; +#ifdef CONFIG_OF + struct device_node *overlay; +#endif }; /**