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 61144C27C53 for ; Sun, 9 Jun 2024 21:13:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CF3F110E2C6; Sun, 9 Jun 2024 21:13:51 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Akp8Cviu"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id B832A10E2C6 for ; Sun, 9 Jun 2024 21:13:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1717967629; x=1749503629; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/3p6jXQAvl/ftRVWRDJzIleT5KRHIFnQntmzF6DY/vs=; b=Akp8CviuggZ160BsyKpeibWeAjPWAwrk14MoCqv96HkU051qXK2yMs0f TYCXdMGSTSPEqVafuOWqXWrd7S1+1rpKg8ZEgp8z8OGrCHzVn2lMuqH3y jirHx9kLZ5w5WHL/rzEuIbk+t9nkTpygZJTffTeO72eJx62tTCguovI3i 5KGyLX5bZK3zidN21xuJgQAiqzTJ17dvxpbS7MtIAEurqhfCMvqoVqi3B maJWnnL38SCmZBAUjJvbmuoezVmkuh96SluLKL5L7iIdYQpPzskYXPbWy vC+Ct0MkOVxkcd1CARcb54bM43oatP5XSsPdi7BimH/malCO6/pXJhB3V A==; X-CSE-ConnectionGUID: CU7FOkzCSeafHWkXIqQrig== X-CSE-MsgGUID: 4T6CS5OwRresq4vjI6iIYg== X-IronPort-AV: E=McAfee;i="6600,9927,11098"; a="26037485" X-IronPort-AV: E=Sophos;i="6.08,226,1712646000"; d="scan'208";a="26037485" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2024 14:13:49 -0700 X-CSE-ConnectionGUID: fUZJ24ntSTSabat2GpXFXA== X-CSE-MsgGUID: 1tFwqrmOT56AGe6/aJkGXQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,226,1712646000"; d="scan'208";a="38991035" Received: from kunal-x299-aorus-gaming-3-pro.iind.intel.com ([10.190.239.13]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2024 14:13:47 -0700 From: Kunal Joshi To: igt-dev@lists.freedesktop.org Cc: Kunal Joshi Subject: [PATCH i-g-t 6/9] lib/igt_kms: add function to get link training info Date: Mon, 10 Jun 2024 02:55:32 +0530 Message-Id: <20240609212535.868832-7-kunal1.joshi@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240609212535.868832-1-kunal1.joshi@intel.com> References: <20240609212535.868832-1-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" [1] exposed information like retrain_disabled, train_count, retrain_count all_train_failures, seq_train_failures, add function to retrieve and store it in struct dp_link_training_info [1] https://patchwork.freedesktop.org/patch/594771/?series=133624&rev=3 Signed-off-by: Kunal Joshi --- lib/igt_kms.c | 32 ++++++++++++++++++++++++++++++++ lib/igt_kms.h | 2 ++ 2 files changed, 34 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 1bd6c31a7..4b354826d 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -6901,3 +6901,35 @@ enum dp_lane_count igt_get_dp_max_lane_count(int drm_fd, igt_output_t *output) return max_lane_count; } + +/** + * igt_read_link_training_info: + * @drm_fd: A drm file descriptor + * @output: Target output + * @link_training_info: Link training info to be filled + * + * Returns: Sets link training info. + */ +void igt_read_link_training_info(int drm_fd, igt_output_t *output, + struct dp_link_training_info *link_training_info) +{ + int dir, res; + char retrain_disabled_buf[4]; + 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_link_training_info", buf, sizeof(buf)); + close(dir); + igt_require(res > 0); + + igt_assert(sscanf(buf, "retrain_disabled: %s\ntrain_count: %d\nretrain_count: %d\nall_train_failures: %d\nseq_train_failures: %d", + retrain_disabled_buf, + &link_training_info->train_count, + &link_training_info->retrain_count, + &link_training_info->all_train_failures, + &link_training_info->seq_train_failures) == 5); + link_training_info->retrain_disabled = strcmp(retrain_disabled_buf, "yes") == 0; +} diff --git a/lib/igt_kms.h b/lib/igt_kms.h index d58676a1e..9301df1e2 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -1266,5 +1266,7 @@ enum dp_link_rate igt_get_dp_link_rate_set_for_output(int drm_fd, igt_output_t * enum dp_lane_count igt_get_dp_lane_count_set_for_output(int drm_fd, igt_output_t *output); enum dp_link_rate igt_get_dp_max_link_rate(int drm_fd, igt_output_t *output); enum dp_lane_count igt_get_dp_max_lane_count(int drm_fd, igt_output_t *output); +void igt_read_link_training_info(int drm_fd, igt_output_t *output, + struct dp_link_training_info *link_training_info); #endif /* __IGT_KMS_H__ */ -- 2.43.0