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 222BBCCD1A5 for ; Fri, 17 Oct 2025 02:27:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 635DC10EAF0; Fri, 17 Oct 2025 02:27:23 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="AXF8GMQ2"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id AE64F10EAE3 for ; Fri, 17 Oct 2025 02:27:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760668037; x=1792204037; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=yHXQpBkBfnm/9pD510AriQb/4gDJE4y0UcVHNl8cbIU=; b=AXF8GMQ23JQQMneJgOl11optiH3wkYQ/p6IWZszu59rupUgQHwZhYJ0z 6+S1dL47Q4iozZOt13prO8E+rrm1DVDwTw9r9jrIWxxMcMe+lnpNdOiW5 qPW1rSOQIlhxDlWGhYRBhD9cT2XZhMzxClAbJiKrIWlpqNwDhowx5kA7D vMTREeEnMa/6PbWw1ZsbNBdnGAn2dEJSj1OuvLuJX7lEeWF0rgaQ1gfRP +6pCPH706gQp58WKz4VTfM+Y+galJKKg10czdTiczkzu4O9lfwuhuXnSo kHUNzW34egwBqI9CXwkGGzK5nGqwEgHhceT7ohdxj/xDpJJ49wx3hrh8u A==; X-CSE-ConnectionGUID: axfrwOTJRQydf1rhe8o6yg== X-CSE-MsgGUID: 6PIaURR/QZSr7fZNmhLXbw== X-IronPort-AV: E=McAfee;i="6800,10657,11584"; a="66739211" X-IronPort-AV: E=Sophos;i="6.19,234,1754982000"; d="scan'208";a="66739211" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2025 19:27:17 -0700 X-CSE-ConnectionGUID: Hevjy2QRTXGppDnnP7h8xQ== X-CSE-MsgGUID: JwMWXH3EQcu/FrYJotNgyw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,234,1754982000"; d="scan'208";a="183089180" Received: from lucas-s2600cw.jf.intel.com ([10.54.55.69]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2025 19:27:17 -0700 From: Lucas De Marchi To: intel-xe@lists.freedesktop.org Cc: Lucas De Marchi , Shekhar Chauhan , Balasubramani Vivekanandan , Matt Roper , Tejas Upadhyay , Gustavo Sousa Subject: [PATCH v3 08/24] drm/xe/xe3p: Determine service copy availability from fuse Date: Thu, 16 Oct 2025 19:26:27 -0700 Message-ID: <20251016-xe3p-v3-8-3dd173a3097a@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251016-xe3p-v3-0-3dd173a3097a@intel.com> References: <20251016-xe3p-v3-0-3dd173a3097a@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 Reviewed-by: Gustavo Sousa 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 21c15441c4537..228de47c0f3f5 100644 --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h @@ -239,6 +239,9 @@ #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 b08a6d42c8ffc..073ecd263e543 100644 --- a/drivers/gpu/drm/xe/xe_hw_engine.c +++ b/drivers/gpu/drm/xe/xe_hw_engine.c @@ -718,27 +718,52 @@ 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