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 780D9CCF9EE for ; Fri, 31 Oct 2025 08:05:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3168910EABD; Fri, 31 Oct 2025 08:05:51 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="NvUBgG1+"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id B3BEB10EABE for ; Fri, 31 Oct 2025 08:05:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761897948; x=1793433948; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Zto6c7Rh2iQbuwTFp8ITZXLqNZZM1hfRlyo6YzMAatg=; b=NvUBgG1+hHJhI8n80J9TylEuqxImERssucl86xTiv5riX/o+OLBf497W XTI54vL1vrtXxTZNHiaw3OyJn3VcJElMlKTbVtlCLZebsbFHXv1hFmH18 48jDzLvgk9eQhg6CD2X6YV9vG9CQDqecsEGvBUc0opQiy4ESNydDGgCzs RRu8FdPMqIYY1qswSiELnKAfMwEUK72KcHJpFA80wU4S7HA5QW0Xnt3WL 0hAb5CrnZfy7bX+sWJUWCPSCg1HdrL7uu5hLk6zCcDRkra57xEBiMrXKh Nbc3y2UfmYkV66T8W7LJqO1KNLjEaAoh+17AYCHVSoUqLVHPAMcFBwKZy g==; X-CSE-ConnectionGUID: TqSaAJbLSDexIC1/Mx/AaA== X-CSE-MsgGUID: FJ9eKtz0Sm+3JqfhA9VylQ== X-IronPort-AV: E=McAfee;i="6800,10657,11598"; a="75503188" X-IronPort-AV: E=Sophos;i="6.19,268,1754982000"; d="scan'208";a="75503188" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Oct 2025 01:05:48 -0700 X-CSE-ConnectionGUID: /jX0e5V/SGK1Fyz9yn0Zag== X-CSE-MsgGUID: KOxJ/hW4QaGTPuV+Bn2Bvg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,268,1754982000"; d="scan'208";a="186631615" Received: from llaguna-dev.igk.intel.com (HELO localhost) ([10.91.214.40]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Oct 2025 01:05:46 -0700 From: Lukasz Laguna To: intel-xe@lists.freedesktop.org Cc: michal.wajdeczko@intel.com, piotr.piorkowski@intel.com, lukasz.laguna@intel.com Subject: [PATCH v2 2/4] drm/xe/pf: Configure LMTT in MERT Date: Fri, 31 Oct 2025 09:04:59 +0100 Message-Id: <20251031080501.844-3-lukasz.laguna@intel.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20251031080501.844-1-lukasz.laguna@intel.com> References: <20251031080501.844-1-lukasz.laguna@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=y 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" On platforms with standalone MERT, the PF driver needs to program LMTT in MERT's LMEM_CFG register. Signed-off-by: Lukasz Laguna --- drivers/gpu/drm/xe/regs/xe_mert_regs.h | 13 +++++++++++++ drivers/gpu/drm/xe/xe_lmtt.c | 10 +++++++++- 2 files changed, 22 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/xe/regs/xe_mert_regs.h diff --git a/drivers/gpu/drm/xe/regs/xe_mert_regs.h b/drivers/gpu/drm/xe/regs/xe_mert_regs.h new file mode 100644 index 000000000000..5b7c15e08747 --- /dev/null +++ b/drivers/gpu/drm/xe/regs/xe_mert_regs.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2025 Intel Corporation + */ + +#ifndef _XE_MERT_REGS_H_ +#define _XE_MERT_REGS_H_ + +#include "regs/xe_reg_defs.h" + +#define MERT_LMEM_CFG XE_REG(0x1448b0) + +#endif /* _XE_MERT_REGS_H_ */ diff --git a/drivers/gpu/drm/xe/xe_lmtt.c b/drivers/gpu/drm/xe/xe_lmtt.c index 4dc1de482eee..f50c5a4b9edf 100644 --- a/drivers/gpu/drm/xe/xe_lmtt.c +++ b/drivers/gpu/drm/xe/xe_lmtt.c @@ -8,6 +8,7 @@ #include #include "regs/xe_gt_regs.h" +#include "regs/xe_mert_regs.h" #include "xe_assert.h" #include "xe_bo.h" @@ -17,6 +18,7 @@ #include "xe_mmio.h" #include "xe_res_cursor.h" #include "xe_sriov.h" +#include "xe_tile.h" #include "xe_tile_sriov_printk.h" /** @@ -196,16 +198,22 @@ static void lmtt_setup_dir_ptr(struct xe_lmtt *lmtt) struct xe_device *xe = tile_to_xe(tile); dma_addr_t offset = xe_bo_main_addr(lmtt->pd->bo, XE_PAGE_SIZE); struct xe_gt *gt; + u32 config; u8 id; lmtt_debug(lmtt, "DIR offset %pad\n", &offset); lmtt_assert(lmtt, xe_bo_is_vram(lmtt->pd->bo)); lmtt_assert(lmtt, IS_ALIGNED(offset, SZ_64K)); + config = LMEM_EN | REG_FIELD_PREP(LMTT_DIR_PTR, offset / SZ_64K); + for_each_gt_on_tile(gt, tile, id) xe_mmio_write32(>->mmio, GRAPHICS_VER(xe) >= 20 ? XE2_LMEM_CFG : LMEM_CFG, - LMEM_EN | REG_FIELD_PREP(LMTT_DIR_PTR, offset / SZ_64K)); + config); + + if (xe_device_has_mert(xe) && xe_tile_is_root(tile)) + xe_mmio_write32(&tile->mmio, MERT_LMEM_CFG, config); } /** -- 2.40.0