From patchwork Fri Sep 27 08:38:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13814006 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 224C0CEBF81 for ; Fri, 27 Sep 2024 08:36:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B977510EC5A; Fri, 27 Sep 2024 08:36:48 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="bIl+hBT8"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8160610EC5A; Fri, 27 Sep 2024 08:36:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727426207; x=1758962207; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=lD94vFBucNAxOcuJZewAgTrUmmWq8a+wh1ap/h6dQnI=; b=bIl+hBT8TLUL6iuqTVeYIRn7tp3R0MXtgSJeVtDqNkjgCSlqWPYmO0bA A6Q6KoFzBQwFwmrwUp6s2Nws/3a/1l5TKmOeC48wgf0IZg6XrFM5oLahH s+zj/2vKErAYw55D53vIJ/tdHerT7/9gwt+gVmHTCWgtYM9NkKtdpCeM3 Std27xfmXrfu4rgzYpPIP/ne5V5HjDcLdGK1D9WDGDMX/W1r48Ca7gOSF zK73iUelUBDY+lHzHZd3Q/r0oeWnjrQQQW6dstVhEN5pTub2wS5GGA9Q1 87iyqwMvwQw/GDOTpG4F/iMNJKBq/eBWm6tg1tthGCAlOvKm5YPGDBrqT Q==; X-CSE-ConnectionGUID: bdsdSKFvR0K8KpOfkMhJNQ== X-CSE-MsgGUID: 77BNx6yWSDyswRRGJGvnaA== X-IronPort-AV: E=McAfee;i="6700,10204,11207"; a="51977621" X-IronPort-AV: E=Sophos;i="6.11,158,1725346800"; d="scan'208";a="51977621" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 01:36:47 -0700 X-CSE-ConnectionGUID: mR4RrXtKSAC0bWJohDnK7g== X-CSE-MsgGUID: RwsGjzh3QTuD6vzoU8r/ig== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,158,1725346800"; d="scan'208";a="77409386" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 01:36:45 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Cc: intel-xe@lists.freedesktop.org, suraj.kandpal@intel.com, ville.syrjala@linux.intel.com Subject: [PATCH 06/17] drm/i915: Add bigjoiner and uncompressed joiner hw readout sanity checks Date: Fri, 27 Sep 2024 14:08:20 +0530 Message-ID: <20240927083831.3913645-7-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240927083831.3913645-1-ankit.k.nautiyal@intel.com> References: <20240927083831.3913645-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Stanislav Lisovskiy Add sanity checks for primary and secondary bigjoiner/uncompressed bitmasks, should make it easier to spot possible issues. v2: -Streamline the expected masks and add few more drm_WARNs. (Ville) -Use %#x format specifier for printing joiner masks. (Ville) -Use struct intel_display instead of struct drm_i915_private. (Ankit) v3: -Rename helper to get expected uncompressed joiner pipes. (Ville) Signed-off-by: Stanislav Lisovskiy Reviewed-by: Suraj Kandpal (v1) Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/intel_display.c | 51 +++++++++++++++++++- 1 file changed, 49 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 8d37973864ee..2d6260c3bca5 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -3643,26 +3643,73 @@ static void enabled_bigjoiner_pipes(struct intel_display *display, } } +static u8 expected_secondary_pipes(u8 primary_pipes, int num_pipes) +{ + u8 secondary_pipes = 0; + + for (int i = 1; i < num_pipes; i++) + secondary_pipes |= primary_pipes << i; + + return secondary_pipes; +} + +static u8 expected_uncompressed_joiner_secondary_pipes(u8 uncompjoiner_primary_pipes) +{ + return expected_secondary_pipes(uncompjoiner_primary_pipes, 2); +} + +static u8 expected_bigjoiner_secondary_pipes(u8 bigjoiner_primary_pipes) +{ + return expected_secondary_pipes(bigjoiner_primary_pipes, 2); +} + static void enabled_joiner_pipes(struct drm_i915_private *dev_priv, u8 *primary_pipes, u8 *secondary_pipes) { struct intel_display *display = to_intel_display(&dev_priv->drm); u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes; u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes; + u8 uncompressed_joiner_pipes, bigjoiner_pipes; enabled_uncompressed_joiner_pipes(display, &primary_uncompressed_joiner_pipes, &secondary_uncompressed_joiner_pipes); + drm_WARN_ON(display->drm, + (primary_uncompressed_joiner_pipes & secondary_uncompressed_joiner_pipes) != 0); + enabled_bigjoiner_pipes(display, &primary_bigjoiner_pipes, &secondary_bigjoiner_pipes); + drm_WARN_ON(display->drm, + (primary_bigjoiner_pipes & secondary_bigjoiner_pipes) != 0); + + uncompressed_joiner_pipes = primary_uncompressed_joiner_pipes | + secondary_uncompressed_joiner_pipes; + bigjoiner_pipes = primary_bigjoiner_pipes | secondary_bigjoiner_pipes; + + drm_WARN(display->drm, (uncompressed_joiner_pipes & bigjoiner_pipes) != 0, + "Uncomressed joiner pipes(%#x) and bigjoiner pipes(%#x) can't intersect\n", + uncompressed_joiner_pipes, bigjoiner_pipes); + + drm_WARN(display->drm, secondary_bigjoiner_pipes != + expected_bigjoiner_secondary_pipes(primary_bigjoiner_pipes), + "Wrong secondary bigjoiner pipes(expected %#x, current %#x)\n", + expected_bigjoiner_secondary_pipes(primary_bigjoiner_pipes), + secondary_bigjoiner_pipes); + + drm_WARN(display->drm, secondary_uncompressed_joiner_pipes != + expected_uncompressed_joiner_secondary_pipes(primary_uncompressed_joiner_pipes), + "Wrong secondary uncompressed joiner pipes(expected %#x, current %#x)\n", + expected_uncompressed_joiner_secondary_pipes(primary_uncompressed_joiner_pipes), + secondary_uncompressed_joiner_pipes); + *primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes; *secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes; /* Joiner pipes should always be consecutive primary and secondary */ - drm_WARN(&dev_priv->drm, *secondary_pipes != *primary_pipes << 1, - "Joiner misconfigured (primary pipes 0x%x, secondary pipes 0x%x)\n", + drm_WARN(display->drm, *secondary_pipes != *primary_pipes << 1, + "Joiner misconfigured (primary pipes %#x, secondary pipes %#x)\n", *primary_pipes, *secondary_pipes); }