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 5B7ADF5513F for ; Sun, 8 Mar 2026 13:58:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2288D10E09C; Sun, 8 Mar 2026 13:58:27 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="EFzOY1wv"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id D719210E09C for ; Sun, 8 Mar 2026 13:58:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772978306; x=1804514306; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=swRZlS6hIkRpf2w//hu87TwctGcmCYV6XZA5PEZu128=; b=EFzOY1wvz2GJ8YHmlkn8EtM9hEQqAlz594plVg4ZGglNxiDqtuAeu+cM X705m5b4SnEiJjSimlPcfgqBEFyHOmOT4YMVpv/TLfv7fTESyJ5TbYOqm u+zmdzSi2r23IdDc6neB35eMe1hh/HsnmtooxdRysmwMtxUpcPtaKHO37 D/XVzkU1ofwLkpUULCGtUPRYzDfgHp55kF9lqXTxKYf/rqSz+JNNh+oJl NFi4pzxEPwVk/JQ2WmPtL87fA1kP/Fw4pPbLEqHcZo5LXlfIcRHs1qkOG MgIs9NCcZRUvyKUgBAfsB4pbANCXcZtt8a2keISH3ixHjjUTA894fMJ2k w==; X-CSE-ConnectionGUID: 49aWmy97SoWDh82ZjA3X7g== X-CSE-MsgGUID: uTtP0DiUTJi8vJe4RC+85g== X-IronPort-AV: E=McAfee;i="6800,10657,11722"; a="73934713" X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="73934713" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2026 06:58:26 -0700 X-CSE-ConnectionGUID: rNa7Rj01Quesd+TyFwjUSw== X-CSE-MsgGUID: 0ocwTNHxQViHrK7xaaCtsA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="242523291" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by fmviesa002.fm.intel.com with ESMTP; 08 Mar 2026 06:58:22 -0700 From: Raag Jadav To: intel-xe@lists.freedesktop.org Cc: matthew.brost@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com, riana.tauro@intel.com, michal.wajdeczko@intel.com, matthew.d.roper@intel.com, michal.winiarski@intel.com, matthew.auld@intel.com, maarten@lankhorst.se, jani.nikula@intel.com, lukasz.laguna@intel.com, Raag Jadav Subject: [PATCH v3 06/10] drm/xe: Introduce xe_device_assert_lmem_ready() Date: Sun, 8 Mar 2026 19:25:32 +0530 Message-ID: <20260308135536.3852304-7-raag.jadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260308135536.3852304-1-raag.jadav@intel.com> References: <20260308135536.3852304-1-raag.jadav@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" In preparation of usecases which require verifying LMEM readiness after PCIe FLR, introduce xe_device_assert_lmem_ready() helper. Signed-off-by: Raag Jadav --- v2: Add kernel doc (Matthew Brost) --- drivers/gpu/drm/xe/xe_device.c | 10 ++++++++-- drivers/gpu/drm/xe/xe_device.h | 1 + 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 31fb1d7afde5..eeb626737760 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -650,7 +650,13 @@ static int xe_set_dma_info(struct xe_device *xe) return err; } -static void assert_lmem_ready(struct xe_device *xe) +/** + * xe_device_assert_lmem_ready() - Verify LMEM readiness + * @xe: xe device instance + * + * Verify LMEM readiness and assert on failure. + */ +void xe_device_assert_lmem_ready(struct xe_device *xe) { if (!IS_DGFX(xe) || IS_SRIOV_VF(xe)) return; @@ -738,7 +744,7 @@ int xe_device_probe_early(struct xe_device *xe) * is flagged after full initialization is complete. Assert if lmem is * not initialized. */ - assert_lmem_ready(xe); + xe_device_assert_lmem_ready(xe); xe->wedged.mode = xe_device_validate_wedged_mode(xe, xe_modparam.wedged_mode) ? XE_DEFAULT_WEDGED_MODE : xe_modparam.wedged_mode; diff --git a/drivers/gpu/drm/xe/xe_device.h b/drivers/gpu/drm/xe/xe_device.h index 39464650533b..44db00d0ad55 100644 --- a/drivers/gpu/drm/xe/xe_device.h +++ b/drivers/gpu/drm/xe/xe_device.h @@ -140,6 +140,7 @@ static inline struct xe_force_wake *gt_to_fw(struct xe_gt *gt) return >->pm.fw; } +void xe_device_assert_lmem_ready(struct xe_device *xe); void xe_device_assert_mem_access(struct xe_device *xe); static inline bool xe_device_has_flat_ccs(struct xe_device *xe) -- 2.43.0