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 00EC4CCD192 for ; Tue, 14 Oct 2025 03:25:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AF44C10E534; Tue, 14 Oct 2025 03:25:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="PmnP6r5o"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id 255A010E129 for ; Tue, 14 Oct 2025 03:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760412330; x=1791948330; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3G/efc2vURcO4g8/BVL2vmYP9td+eLUnC1RtwqM3SGc=; b=PmnP6r5oYtvj4LmjBw1LZFVyrkeG4SojB38eaB50V2uGgc2mK49m/06F bPqSWPlQcmT9yGnPz/r1CA/GHDagIOwV1obZofto9Ke6b34hzsTNofWUw Z+4tF6rpuyCJz/nP1rXxhGbr0Ic0FrqgNEWtjFsIdZbpCQWQveNJGvVVI HBfIZuPVdK6ZsWx9lvLSWIdHnzjeNWMYwwTbVN0UcntcLDXaG85lFXuXR mSwkvMpT3TacO8gLzuJEyz3ztzeeawm9wO6Sq8sQO2XZc+L8gdquTrKvy M9sBQ3xXU4U4ytqClr4pdwEKAqFouv2CuK5NX97FOQwurtAMxNX1Bxau8 w==; X-CSE-ConnectionGUID: xicmWGrJSS+ximr/7bEN6w== X-CSE-MsgGUID: 52lrUs8oTOiAat8ncXfhig== X-IronPort-AV: E=McAfee;i="6800,10657,11581"; a="66414873" X-IronPort-AV: E=Sophos;i="6.19,227,1754982000"; d="scan'208";a="66414873" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2025 20:25:29 -0700 X-CSE-ConnectionGUID: o9MwOOFoQ9SoeGhJ4ZPhgA== X-CSE-MsgGUID: miKRUOCPSsqPzuBEToo11w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,227,1754982000"; d="scan'208";a="181567291" Received: from lucas-s2600cw.jf.intel.com ([10.54.55.69]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2025 20:25:29 -0700 From: Lucas De Marchi To: intel-xe@lists.freedesktop.org Cc: Lucas De Marchi , Shekhar Chauhan , Balasubramani Vivekanandan , Matt Roper , Tejas Upadhyay Subject: [PATCH 09/23] drm/xe/xe3p: Determine service copy availability from fuse Date: Mon, 13 Oct 2025 20:24:41 -0700 Message-ID: <20251013-xe3p-v1-9-bfb74f038215@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013-xe3p-v1-0-bfb74f038215@intel.com> References: <20251013-xe3p-v1-0-bfb74f038215@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.15-dev-bd47d 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" From: Matt Roper Xe3p introduces a dedicated SERVICE_COPY_ENABLE fuse register to reflect the availability of the service copy engines (BCS1-BCS8). Bspec: 74624 Signed-off-by: Matt Roper Signed-off-by: Lucas De Marchi --- drivers/gpu/drm/xe/regs/xe_gt_regs.h | 3 +++ drivers/gpu/drm/xe/xe_hw_engine.c | 43 ++++++++++++++++++++++++++++-------- 2 files changed, 37 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h index 937dc341abe5e..b73efde21119f 100644 --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h @@ -245,6 +245,9 @@ #define XE2_GT_GEOMETRY_DSS_1 XE_REG(0x9150) #define XE2_GT_GEOMETRY_DSS_2 XE_REG(0x9154) +#define SERVICE_COPY_ENABLE XE_REG(0x9170) +#define FUSE_SERVICE_COPY_ENABLE_MASK REG_GENMASK(7, 0) + #define GDRST XE_REG(0x941c) #define GRDOM_GUC REG_BIT(3) #define GRDOM_FULL REG_BIT(0) diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c index 5544d91c21e8e..275d522d301a3 100644 --- a/drivers/gpu/drm/xe/xe_hw_engine.c +++ b/drivers/gpu/drm/xe/xe_hw_engine.c @@ -716,27 +716,52 @@ static void read_media_fuses(struct xe_gt *gt) } } +static u32 infer_svccopy_from_meml3(struct xe_gt *gt) +{ + u32 meml3 = REG_FIELD_GET(MEML3_EN_MASK, + xe_mmio_read32(>->mmio, MIRROR_FUSE3)); + u32 svccopy_mask = 0; + + /* + * Each of the four meml3 bits determines the fusing of two service + * copy engines. + */ + for (int i = 0; i < 4; i++) + svccopy_mask |= (meml3 & BIT(i)) ? 0b11 << 2 * i : 0; + + return svccopy_mask; +} + +static u32 read_svccopy_fuses(struct xe_gt *gt) +{ + return REG_FIELD_GET(FUSE_SERVICE_COPY_ENABLE_MASK, + xe_mmio_read32(>->mmio, SERVICE_COPY_ENABLE)); +} + static void read_copy_fuses(struct xe_gt *gt) { struct xe_device *xe = gt_to_xe(gt); u32 bcs_mask; - if (GRAPHICS_VERx100(xe) < 1260 || GRAPHICS_VERx100(xe) >= 1270) - return; - xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT); - bcs_mask = xe_mmio_read32(>->mmio, MIRROR_FUSE3); - bcs_mask = REG_FIELD_GET(MEML3_EN_MASK, bcs_mask); + if (GRAPHICS_VER(xe) >= 35) + bcs_mask = read_svccopy_fuses(gt); + else if (GRAPHICS_VERx100(xe) == 1260) + bcs_mask = infer_svccopy_from_meml3(gt); + else + return; - /* BCS0 is always present; only BCS1-BCS8 may be fused off */ - for (int i = XE_HW_ENGINE_BCS1, j = 0; i <= XE_HW_ENGINE_BCS8; ++i, ++j) { + /* Only BCS1-BCS8 may be fused off */ + bcs_mask <<= XE_HW_ENGINE_BCS1; + for (int i = XE_HW_ENGINE_BCS1; i <= XE_HW_ENGINE_BCS8; ++i) { if (!(gt->info.engine_mask & BIT(i))) continue; - if (!(BIT(j / 2) & bcs_mask)) { + if (!(bcs_mask & BIT(i))) { gt->info.engine_mask &= ~BIT(i); - xe_gt_info(gt, "bcs%u fused off\n", j); + xe_gt_info(gt, "bcs%u fused off\n", + i - XE_HW_ENGINE_BCS0); } } } -- 2.51.0