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 6D4B0CE7A9D for ; Thu, 5 Sep 2024 20:51:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3976810E146; Thu, 5 Sep 2024 20:51:22 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="XYcFwrlq"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2E97810E051 for ; Thu, 5 Sep 2024 20:51:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1725569477; x=1757105477; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zaciXw9DfTWteM9ok/EDasP53obBbFflCCJ2/6OrjgY=; b=XYcFwrlqIo7vbcWxAwCe7tpCeenL55nmtRvALin5f79izib/uHmVSA/F ertuuNar/TD6OPie9Q+BSNjUlk0vaVMIaBktLlkXEYMw4T8y01yASm+hf xu7xbUKXW7mf4HvKG7fyXK0d8ZyUUaxb78IVH7AbNqjpowSKsiWXfkLda dhTo8rb1w16HB5yh4vpyQfz9ESK/7njmAiZeACSSu5KbjP+eRJ8ct2UkV uxv0NxHFXG9rGPkZAB55Dt3huppIGOTLrSuClrS2k5W7ZRD2rdBLBqAK8 RwcwixuXiX6nmuarNdj+H1sSsuMrEI8zA2sw7i8Ory3iJn3yFUkFThwNu w==; X-CSE-ConnectionGUID: 3d4yiXB+RuCynLm5ZP9uXA== X-CSE-MsgGUID: n6DRV78vSAqrYKuiHW4vuw== X-IronPort-AV: E=McAfee;i="6700,10204,11186"; a="34982282" X-IronPort-AV: E=Sophos;i="6.10,205,1719903600"; d="scan'208";a="34982282" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Sep 2024 13:51:07 -0700 X-CSE-ConnectionGUID: DnSBLdh0SOaACcR7vSgePQ== X-CSE-MsgGUID: bdg8iqH2RbW6e+OpiqCCyw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,205,1719903600"; d="scan'208";a="66486756" Received: from relo-linux-5.jf.intel.com ([10.165.21.152]) by orviesa008.jf.intel.com with ESMTP; 05 Sep 2024 13:51:07 -0700 From: John.C.Harrison@Intel.com To: Intel-Xe@Lists.FreeDesktop.Org Cc: John Harrison Subject: [PATCH v7 04/10] drm/xe/guc: Copy GuC log prior to dumping Date: Thu, 5 Sep 2024 13:50:59 -0700 Message-ID: <20240905205106.1063091-5-John.C.Harrison@Intel.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240905205106.1063091-1-John.C.Harrison@Intel.com> References: <20240905205106.1063091-1-John.C.Harrison@Intel.com> MIME-Version: 1.0 Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ 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: John Harrison Add an extra stage to the GuC log print to copy the log buffer into regular host memory first, rather than printing the live GPU buffer object directly. Doing so helps prevent inconsistencies due to the log being updated as it is being dumped. It also allows the use of the ASCII85 helper function for printing the log in a more compact form than a straight hex dump. v2: Use %zx instead of %lx for size_t prints. v3: Replace hexdump code with ascii85 call (review feedback from Matthew B). Move chunking code into next patch as that reduces the deltas of both. v4: Add a prefix to the ASCII85 output to aid tool parsing. Signed-off-by: John Harrison --- drivers/gpu/drm/xe/xe_guc_log.c | 40 +++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_guc_log.c b/drivers/gpu/drm/xe/xe_guc_log.c index a37ee3419428..be47780ec2a7 100644 --- a/drivers/gpu/drm/xe/xe_guc_log.c +++ b/drivers/gpu/drm/xe/xe_guc_log.c @@ -6,9 +6,12 @@ #include "xe_guc_log.h" #include +#include #include "xe_bo.h" +#include "xe_devcoredump.h" #include "xe_gt.h" +#include "xe_gt_printk.h" #include "xe_map.h" #include "xe_module.h" @@ -49,32 +52,35 @@ static size_t guc_log_size(void) CAPTURE_BUFFER_SIZE; } +/** + * xe_guc_log_print - dump a copy of the GuC log to some useful location + * @log: GuC log structure + * @p: the printer object to output to + */ void xe_guc_log_print(struct xe_guc_log *log, struct drm_printer *p) { struct xe_device *xe = log_to_xe(log); size_t size; - int i, j; + void *copy; - xe_assert(xe, log->bo); + if (!log->bo) { + drm_puts(p, "GuC log buffer not allocated"); + return; + } size = log->bo->size; -#define DW_PER_READ 128 - xe_assert(xe, !(size % (DW_PER_READ * sizeof(u32)))); - for (i = 0; i < size / sizeof(u32); i += DW_PER_READ) { - u32 read[DW_PER_READ]; - - xe_map_memcpy_from(xe, read, &log->bo->vmap, i * sizeof(u32), - DW_PER_READ * sizeof(u32)); -#define DW_PER_PRINT 4 - for (j = 0; j < DW_PER_READ / DW_PER_PRINT; ++j) { - u32 *print = read + j * DW_PER_PRINT; - - drm_printf(p, "0x%08x 0x%08x 0x%08x 0x%08x\n", - *(print + 0), *(print + 1), - *(print + 2), *(print + 3)); - } + copy = vmalloc(size); + if (!copy) { + drm_printf(p, "Failed to allocate %zu", size); + return; } + + xe_map_memcpy_from(xe, copy, &log->bo->vmap, 0, size); + + xe_print_blob_ascii85(p, "Log data", copy, 0, size); + + vfree(copy); } int xe_guc_log_init(struct xe_guc_log *log) -- 2.46.0