From patchwork Thu Nov 12 05:42:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Yilun X-Patchwork-Id: 11899127 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 09171138B for ; Thu, 12 Nov 2020 05:47:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3450208FE for ; Thu, 12 Nov 2020 05:47:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727251AbgKLFrB (ORCPT ); Thu, 12 Nov 2020 00:47:01 -0500 Received: from mga14.intel.com ([192.55.52.115]:12576 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726843AbgKLFq6 (ORCPT ); Thu, 12 Nov 2020 00:46:58 -0500 IronPort-SDR: qNbaa3idRFHP9M3lJl60hxq3ctEb8HBGDMbfClS10xl69xxPApmZKrE74eHIdHaEvrWuhRfAIB iuLjF7iygELg== X-IronPort-AV: E=McAfee;i="6000,8403,9802"; a="169477684" X-IronPort-AV: E=Sophos;i="5.77,471,1596524400"; d="scan'208";a="169477684" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2020 21:46:57 -0800 IronPort-SDR: x1w2XRnxQkmd754p/VJ5zO13TUM4xIiTBmF64AmwTGBukBVPDcriyvVWKja4Ru0/Zr7ccp+h7j afRhu3o6Q3cw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,471,1596524400"; d="scan'208";a="328367984" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.141]) by orsmga006.jf.intel.com with ESMTP; 11 Nov 2020 21:46:54 -0800 From: Xu Yilun To: mdf@kernel.org, krzk@kernel.org, gregkh@linuxfoundation.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: trix@redhat.com, lgoncalv@redhat.com, yilun.xu@intel.com, hao.wu@intel.com, Matthew Gerlach , Russ Weight Subject: [PATCH v13 3/6] fpga: dfl: add dfl bus support to MODULE_DEVICE_TABLE() Date: Thu, 12 Nov 2020 13:42:36 +0800 Message-Id: <1605159759-3439-4-git-send-email-yilun.xu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1605159759-3439-1-git-send-email-yilun.xu@intel.com> References: <1605159759-3439-1-git-send-email-yilun.xu@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org Device Feature List (DFL) is a linked list of feature headers within the device MMIO space. It is used by FPGA to enumerate multiple sub features within it. Each feature can be uniquely identified by DFL type and feature id, which can be read out from feature headers. A dfl bus helps DFL framework modularize DFL device drivers for different sub features. The dfl bus matches its devices and drivers by DFL type and feature id. This patch adds dfl bus support to MODULE_DEVICE_TABLE() by adding info about struct dfl_device_id in devicetable-offsets.c and add a dfl entry point in file2alias.c. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Signed-off-by: Matthew Gerlach Signed-off-by: Russ Weight Acked-by: Wu Hao Signed-off-by: Moritz Fischer --- v2: add comments for the format of modalias v3: changes the names from dfl_XXX to fpga_dfl_XXX delete the comments of valid bits for modalias format v9: rebase the patch for bus name changes back to "dfl" v10: no change v11: no change v12: no change v13: no change --- scripts/mod/devicetable-offsets.c | 4 ++++ scripts/mod/file2alias.c | 13 +++++++++++++ 2 files changed, 17 insertions(+) diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c index 27007c1..d8350ee 100644 --- a/scripts/mod/devicetable-offsets.c +++ b/scripts/mod/devicetable-offsets.c @@ -243,5 +243,9 @@ int main(void) DEVID(mhi_device_id); DEVID_FIELD(mhi_device_id, chan); + DEVID(dfl_device_id); + DEVID_FIELD(dfl_device_id, type); + DEVID_FIELD(dfl_device_id, feature_id); + return 0; } diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 2417dd1..8a438c9 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1368,6 +1368,18 @@ static int do_mhi_entry(const char *filename, void *symval, char *alias) return 1; } +/* Looks like: dfl:tNfN */ +static int do_dfl_entry(const char *filename, void *symval, char *alias) +{ + DEF_FIELD(symval, dfl_device_id, type); + DEF_FIELD(symval, dfl_device_id, feature_id); + + sprintf(alias, "dfl:t%04Xf%04X", type, feature_id); + + add_wildcard(alias); + return 1; +} + /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) { @@ -1442,6 +1454,7 @@ static const struct devtable devtable[] = { {"tee", SIZE_tee_client_device_id, do_tee_entry}, {"wmi", SIZE_wmi_device_id, do_wmi_entry}, {"mhi", SIZE_mhi_device_id, do_mhi_entry}, + {"dfl", SIZE_dfl_device_id, do_dfl_entry}, }; /* Create MODULE_ALIAS() statements.