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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B9F03C5472F for ; Sun, 25 Aug 2024 18:02:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7358C10E0D7; Sun, 25 Aug 2024 18:02:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="PG7VF34S"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id F195910E0D7 for ; Sun, 25 Aug 2024 18:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724608960; x=1756144960; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9Lkqu+JKti0+kuml7gvcJGfCxkfB9NO6QjYJ5Mvs6rI=; b=PG7VF34SlxqlZ5oTAeiBPuNU2Lm9JE2lC7RIbYRztHGN3N6IgBUhCP1I 9A3QZAE+RTdYwf61TdQOZu/PDgAQbUNUuB6Oi/zAfhDQo5ENU97LUMKsS BBa5VK1Ed6pRCGs/NNurTkmXUAPqSDOJ67eRs2PJq0ZKVSFCJr7QY5a7w JD8ELTgQvo+/vqropVSdhGtTm5qqGaGFrT+5FtIgByeYFSs3ufZErzSJl 0m3rMC3B5TmTPpG94OXkGmPE5xOu6/JE5blVgRFkwGlO15bBtnsTvwtzp T7g7apKjLUIghP/HavSdZaH6/CFOyTzKTDdcz7kGcTFpz+jVzZwZc8C/W A==; X-CSE-ConnectionGUID: UIFNsH9LRq6YG19GI1w3jw== X-CSE-MsgGUID: TEGa9lDJQPynBOMpvVVZjQ== X-IronPort-AV: E=McAfee;i="6700,10204,11175"; a="25917459" X-IronPort-AV: E=Sophos;i="6.10,175,1719903600"; d="scan'208";a="25917459" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2024 11:02:40 -0700 X-CSE-ConnectionGUID: /+0yt/lISmC+hr2tYxeIMQ== X-CSE-MsgGUID: eRu+c6BjSSeXygHvlKpJ/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,175,1719903600"; d="scan'208";a="85488310" Received: from kunal-x299-aorus-gaming-3-pro.iind.intel.com ([10.190.239.13]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2024 11:02:38 -0700 From: Kunal Joshi To: igt-dev@lists.freedesktop.org Cc: Kunal Joshi Subject: [PATCH i-g-t 09/14] lib/igt_kms: add helper to get pending retrain count Date: Sun, 25 Aug 2024 23:44:19 +0530 Message-Id: <20240825181424.4034541-10-kunal1.joshi@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240825181424.4034541-1-kunal1.joshi@intel.com> References: <20240825181424.4034541-1-kunal1.joshi@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" i915_dp_force_link_retrain can be written to trigger link retraining. add helper to get pending retrainig failure count. Signed-off-by: Kunal Joshi --- lib/igt_kms.c | 23 +++++++++++++++++++++++ lib/igt_kms.h | 1 + 2 files changed, 24 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 727fa83f1..91f75243d 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -6941,3 +6941,26 @@ int igt_get_dp_pending_lt_failures(int drm_fd, igt_output_t *output) sscanf(buf, "%d", &ret); return ret; } + +/** + * igt_dp_pending_retrain: + * @drm_fd: A drm file descriptor + * @output: Target output + * + * Returns: Number of pending link retrains. + */ +int igt_get_dp_pending_retrain(int drm_fd, igt_output_t *output) +{ + int dir, res, ret; + char buf[512]; + + igt_require_f(output->name, "Invalid output"); + dir = igt_debugfs_connector_dir(drm_fd, output->name, O_RDONLY); + igt_assert_f(dir >= 0, "Failed to open debugfs dir for connector %s\n", + igt_output_name(output)); + res = igt_debugfs_simple_read(dir, "i915_dp_force_link_retrain", buf, sizeof(buf)); + close(dir); + igt_require(res > 0); + sscanf(buf, "%d", &ret); + return ret; +} diff --git a/lib/igt_kms.h b/lib/igt_kms.h index 07dbcb263..640ec4e09 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -1256,5 +1256,6 @@ void igt_force_lt_failure(int drm_fd, igt_output_t *output, int failure_count); bool igt_get_dp_link_retrain_disabled(int drm_fd, igt_output_t *output); bool igt_has_force_link_training_failure_debugfs(int drmfd, igt_output_t *output); int igt_get_dp_pending_lt_failures(int drm_fd, igt_output_t *output); +int igt_get_dp_pending_retrain(int drm_fd, igt_output_t *output); #endif /* __IGT_KMS_H__ */ -- 2.43.0