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 398C1D35162 for ; Wed, 1 Apr 2026 11:34:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CA6A310EC9D; Wed, 1 Apr 2026 11:34:39 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Jjrs0yqU"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0597510ECC8 for ; Wed, 1 Apr 2026 11:34:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1775043253; x=1806579253; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=c/EWCLrste7iqukbynk5AayGc5e1MoYAwwL0yL6ndmw=; b=Jjrs0yqUsL1NIFp36E6FCE3TrHv3CgcH0u/VUGwhVdveAjXdWNrqT0uv qc8NMRklK1ZexBZv8GVfzEMnMmlLXg6mAWoJdZldUtTw7sWoYI/6NnOnA LF4tAXYccJg0HlVkyJ75H4Jb8Mgit5hLLjmggJYz3CWlVq1mHm0SeVvwK jDkTL2vAcZ7Kigo2LlvJp/S66xJg/+s6panjHwZF4Zbcr2vlBkMrncvA1 M7GW5F/gFYnhievQMbtu6P2fchTjRzeircVqQg2E7/n/qeOF5I9w8M/pu 3erX3oXIt08QobSPa4CKNFp5WYO8Mb4pTU57hXN6LiuSxsDU4Mp9r35su Q==; X-CSE-ConnectionGUID: VGZtyjphSIynMheLbFyZHQ== X-CSE-MsgGUID: XvHRPNOwSUq7NN0M094rUg== X-IronPort-AV: E=McAfee;i="6800,10657,11745"; a="76092222" X-IronPort-AV: E=Sophos;i="6.23,153,1770624000"; d="scan'208";a="76092222" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2026 04:34:12 -0700 X-CSE-ConnectionGUID: 6bjy4P2PR6SXSjiDGQmksw== X-CSE-MsgGUID: VfeHpzhnT9eJlwvn8Yy8pQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,153,1770624000"; d="scan'208";a="231450367" Received: from abityuts-desk.ger.corp.intel.com (HELO localhost) ([10.245.244.206]) by fmviesa005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2026 04:34:12 -0700 From: =?UTF-8?q?Zbigniew=20Kempczy=C5=84ski?= To: igt-dev@lists.freedesktop.org Cc: =?UTF-8?q?Zbigniew=20Kempczy=C5=84ski?= , Matthew Auld Subject: [PATCH i-g-t v6 3/4] lib/intel_pat: Set PTA + ATS PAT entries to invalid value Date: Wed, 1 Apr 2026 13:33:57 +0200 Message-ID: <20260401113353.2825367-9-zbigniew.kempczynski@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260401113353.2825367-6-zbigniew.kempczynski@intel.com> References: <20260401113353.2825367-6-zbigniew.kempczynski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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" Some platforms (like LNL) requires PTA PAT entries shouldn't be programmed and default register value should be used. Setting this to max during parsing pat_sw_config or pat debugfs allows detect these platforms and ignore some actions if necessary. Signed-off-by: Zbigniew Kempczyński Cc: Matthew Auld Reviewed-by: Matthew Auld --- lib/intel_pat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/intel_pat.c b/lib/intel_pat.c index f1f5644dce..2f35bb7724 100644 --- a/lib/intel_pat.c +++ b/lib/intel_pat.c @@ -51,6 +51,8 @@ static int32_t xe_get_pat_config(int drm_fd, struct intel_pat_cache *xe_pat_cach memset(xe_pat_cache, 0, sizeof(*xe_pat_cache)); xe_pat_cache->uc_comp = XE_PAT_IDX_INVALID; + xe_pat_cache->pta_mode = UINT32_MAX; + xe_pat_cache->pat_ats = UINT32_MAX; while ((nread = getline(&line, &line_len, dbgfs_file)) != -1) { uint32_t value = 0; -- 2.43.0