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 D3DC4CA9EC5 for ; Mon, 12 Oct 2026 14:55:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9249C10F1A8; Mon, 12 Oct 2026 14:55:08 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id C1D7E10F19F for ; Mon, 12 Oct 2026 14:54:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791816899; x=1823352899; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=z/QrRYSgCrM9w6ZMYto71p/Vo6O7Y75MBSFC47jXDr8=; b=U9IfafGWqbVGsvz6NMxAkPwr+DmEO1sgmhCtp89pAehS9KGUivkOmWGQ Zf5XaGSmu+ivn5erlfNQnduiJJ9M52fm/Gd/1yW3Fw8qHrM4Tx1qo3M3Z 8bsNcdkLBJdvYgf5bbZ2NOVXSLa2jOKfSs2mhWnWnuqS3tmfD1DmhR+Z3 j4VTbti4BG0SsMPdK+gYHNWfdhpXmiMiL5kCdhPDKK+P6/NGKFxiAwvQw wpFaH/S7ZYGsFDHH6Ht1Mbu74bEh8OhpryKTEbVTiHbM6ref9mvt2xD60 E1v6biaMydI+PPW40vOV5+smWhWsrPQibD/NVlcEdCgpYxk8hUD7s0FRN A==; X-CSE-ConnectionGUID: RqT/nInlQJSNrQ3mrLDfmg== X-CSE-MsgGUID: NkbBALqaQT+mXh7EPScOZQ== X-IronPort-AV: E=McAfee;i="6800,10657,11933"; a="513563" X-IronPort-AV: E=Sophos;i="6.27,153,1787036400"; d="scan'208";a="513563" Received: from fmviesa013.fm.intel.com ([10.60.135.153]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2026 07:54:58 -0700 X-CSE-ConnectionGUID: yQYBKU9FQCuyey02MTgGoQ== X-CSE-MsgGUID: OSMaY6krTu+dqoDwmhwTEg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,153,1787036400"; d="scan'208";a="2675272" Received: from gfx-coremm-kmd15.iind.intel.com ([10.223.55.8]) by fmviesa013.fm.intel.com with ESMTP; 12 Oct 2026 07:54:57 -0700 From: Nareshkumar Gollakoti To: intel-xe@lists.freedesktop.org Cc: tejas.upadhyay@intel.com, Nareshkumar Gollakoti Subject: [PATCH v4 6/7] drm/xe: capture L3 node status registers in devcoredump Date: Mon, 12 Oct 2026 20:22:36 +0530 Message-ID: <20261012145237.3788198-7-naresh.kumar.g@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261012145237.3788198-1-naresh.kumar.g@intel.com> References: <20261012145237.3788198-1-naresh.kumar.g@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" Add L3_NODE_IDLE and L3STAT_LBCF_GFX register definitions and include them in the devcoredump snapshot as a node status section. Extend the register descriptor to mark MCR registers so the snapshot code can read them through xe_gt_mcr_unicast_read_any(), then print and free the captured node status registers alongside the existing dump sections. v2:(Sashiko) - change L3 node registers as XE_REG_MCR type - identify mcr register type from reg.mcr - As generic capture function ensure VF check this will not execute on VF Mode. v4:(Tejas) - Add L3_NODE type into the enum as changed/added in initial patch Signed-off-by: Nareshkumar Gollakoti --- drivers/gpu/drm/xe/regs/xe_gt_regs.h | 3 ++ drivers/gpu/drm/xe/xe_devcoredump.c | 34 ++++++++++++++++++++--- drivers/gpu/drm/xe/xe_devcoredump_types.h | 10 +++++-- 3 files changed, 41 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h index 2e4cb4957479..55f0eee4e20e 100644 --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h @@ -454,6 +454,9 @@ #define L3_ESC_MASK REG_BIT(0) #define L3_ESC(value) REG_FIELD_PREP(L3_ESC_MASK, value) +#define L3_NODE_IDLE XE_REG_MCR(0xb0b0) +#define L3STAT_LBCF_GFX XE_REG_MCR(0xb128) + #define XEHP_L3NODEARBCFG XE_REG_MCR(0xb0b4) #define XEHP_LNESPARE REG_BIT(19) diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c index a2a3437ec2f6..db7ccee12006 100644 --- a/drivers/gpu/drm/xe/xe_devcoredump.c +++ b/drivers/gpu/drm/xe/xe_devcoredump.c @@ -28,6 +28,7 @@ #include "xe_mmio.h" #include "regs/xe_gt_regs.h" #include "regs/xe_guc_regs.h" +#include "xe_gt_mcr.h" /** * DOC: Xe device coredump @@ -73,6 +74,7 @@ #define XE_COREDUMP_TIMEOUT_JIFFIES (60 * 60 * HZ) #define XE_REG_DESC(_reg, _name) { .reg = (_reg), .name = (_name) } +#define XE_REG_DESC_MCR(_reg, _name) { .mcr_reg = (_reg), .name = (_name) } static const struct xe_reg_desc xe3p_gt_guc_reglist[] = { XE_REG_DESC(GUC_STATUS, "GUC_STATUS"), @@ -119,6 +121,11 @@ static const struct xe_reg_desc xe3p_gam_pf_reglist[] = { XE_REG_DESC(PAGE_FLTRPTQ_TAIL_GAMCTRL, "PAGE_FLTRPTQ_TAIL_GAMCTRL"), }; +static const struct xe_reg_desc xe3p_l3_node_reglist[] = { + XE_REG_DESC_MCR(L3_NODE_IDLE, "L3_NODE_IDLE"), + XE_REG_DESC_MCR(L3STAT_LBCF_GFX, "L3STAT_LBCF_GFX"), +}; + /** * struct xe_gt_regset - Struct for register descriptor list for GT * @@ -136,6 +143,7 @@ struct xe_gt_regset { * @XE_DBG_REGSET_RPM: RPM register set * @XE_DBG_REGSET_GUC: GUC register set * @XE_DBG_REGSET_GAM_PF: GAM Pagefault registers set + * @XE_DBG_REGSET_L3_NODE: L3 Node register Set * @XE_DBG_REGSET_MAX: Number of debug register set types */ enum xe_dbg_regset_type { @@ -143,6 +151,7 @@ enum xe_dbg_regset_type { XE_DBG_REGSET_RPM, XE_DBG_REGSET_GUC, XE_DBG_REGSET_GAM_PF, + XE_DBG_REGSET_L3_NODE, XE_DBG_REGSET_MAX, }; @@ -169,6 +178,10 @@ static const struct xe_gt_regset xe_dbg_regsets[XE_DBG_REGSET_MAX] = { .gt[XE_GT_TYPE_MAIN] = { xe3p_gam_pf_reglist, ARRAY_SIZE(xe3p_gam_pf_reglist) }, }, + [XE_DBG_REGSET_L3_NODE] = { + .gt[XE_GT_TYPE_MAIN] = { xe3p_l3_node_reglist, + ARRAY_SIZE(xe3p_l3_node_reglist) }, + }, }; static void xe_dbg_reg_snapshot_print(struct drm_printer *p, @@ -253,8 +266,13 @@ xe_dbg_reg_snapshot_capture_target(struct xe_gt *gt, snap->desc = reglist; snap->num_regs = reglist->num_regs; - for (i = 0; i < reglist->num_regs; i++) - snap->values[i] = xe_mmio_read32(>->mmio, reglist->regs[i].reg); + for (i = 0; i < reglist->num_regs; i++) { + if (reglist->regs[i].reg.mcr) + snap->values[i] = xe_gt_mcr_unicast_read_any(gt, + reglist->regs[i].mcr_reg); + else + snap->values[i] = xe_mmio_read32(>->mmio, reglist->regs[i].reg); + } return snap; } @@ -344,6 +362,9 @@ static ssize_t __xe_devcoredump_read(char *buffer, ssize_t count, drm_printf(&p, "\n**** GAM PF Report ****\n"); xe_gam_pf_snapshot_print(&p, ss->gam_pf_report); + drm_printf(&p, "\n**** Node Status ****\n"); + xe_dbg_reg_snapshot_print(&p, ss->ns); + drm_puts(&p, "\n**** Contexts ****\n"); xe_guc_exec_queue_snapshot_print(ss->ge, &p); @@ -401,6 +422,9 @@ static void xe_devcoredump_snapshot_free(struct xe_devcoredump_snapshot *ss) xe_dbg_reg_snapshot_free(ss->gam_pf_report); ss->gam_pf_report = NULL; + xe_dbg_reg_snapshot_free(ss->ns); + ss->ns = NULL; + xe_guc_exec_queue_snapshot_free(ss->ge); ss->ge = NULL; @@ -639,13 +663,15 @@ static void devcoredump_snapshot(struct xe_devcoredump *coredump, other_gt, XE_DBG_REGSET_GAM_PF, XE_GT_TYPE_MAIN); - + ss->ns = xe_dbg_gt_snapshot_capture(q->gt, + other_gt, + XE_DBG_REGSET_L3_NODE, + XE_GT_TYPE_MAIN); if (q) { ss->ge = xe_guc_exec_queue_snapshot_capture(q); if (job) ss->job = xe_sched_job_snapshot_capture(job); ss->vm = xe_vm_snapshot_capture(q->vm); - xe_engine_snapshot_capture_for_queue(q); } diff --git a/drivers/gpu/drm/xe/xe_devcoredump_types.h b/drivers/gpu/drm/xe/xe_devcoredump_types.h index dc5ae67cdaf7..8003ff8dfecf 100644 --- a/drivers/gpu/drm/xe/xe_devcoredump_types.h +++ b/drivers/gpu/drm/xe/xe_devcoredump_types.h @@ -21,8 +21,12 @@ struct xe_gt; * of the register to dump its value during coredump for debug purpose. */ struct xe_reg_desc { - /** @reg: The register */ - struct xe_reg reg; + union { + /** @reg: The register */ + struct xe_reg reg; + /** @mcr_reg: The mcr register */ + struct xe_reg_mcr mcr_reg; + }; /** @name: Name of the register */ const char *name; }; @@ -105,6 +109,8 @@ struct xe_devcoredump_snapshot { /** @gam_pf_report: GAM PF report snapshot */ struct xe_dbg_reg_snapshot *gam_pf_report; + /** @ns: Node status snapshot */ + struct xe_dbg_reg_snapshot *ns; /** @ge: GuC Submission Engine snapshot */ struct xe_guc_submit_exec_queue_snapshot *ge; -- 2.43.0