From patchwork Thu Dec 5 09:49:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 13894932 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 C3AAAE77170 for ; Thu, 5 Dec 2024 09:49:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 64C9010E38C; Thu, 5 Dec 2024 09:49:48 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="KTApHbAq"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1292710E38B; Thu, 5 Dec 2024 09:49:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1733392187; x=1764928187; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=v0+FabkxUt9Ev8knat/9ZdJcyv0F3U6dWzcSG5Lv0ZE=; b=KTApHbAqhy/gyjnqDLguYTVis3KqY0UQuSBFBVN/7VehbzHZkSlwAz9x 90/E9hTfkdAMm1+9jQfeMb5nFSHc/bZECM12NDfc2WO8m6/d2ra+uQyrP +XtlVzpRXRjIYMrHRpLlxD6P9bP9a43pAYbo32WLADRio3ykEz3f+ysvr dgXvr1FUfOGFzypcIcnAdFmlf6Y8cmSwGDEWqrnHvuUoh0vkNjfh+V8D/ E0+LZg6V/URAC/AjXghPTXwdqzESAZtj62Voq5jp5qNSroZbryj4NsDKC BUg3q48PoyYpx55MQPXtmEN7eNucYz/QLnva/g+II6+dva5neYg5SOm6M w==; X-CSE-ConnectionGUID: Idn8WlYfRkW62gZiQ8GG0A== X-CSE-MsgGUID: elfasFTTQTCtGjXuD4Q70g== X-IronPort-AV: E=McAfee;i="6700,10204,11276"; a="33938939" X-IronPort-AV: E=Sophos;i="6.12,209,1728975600"; d="scan'208";a="33938939" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2024 01:49:47 -0800 X-CSE-ConnectionGUID: zAieTZ1RR+S+/6Vd1cgoRA== X-CSE-MsgGUID: /zEyLcKfQWqqayoUXNE4DQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,209,1728975600"; d="scan'208";a="124862172" Received: from lfiedoro-mobl.ger.corp.intel.com (HELO localhost) ([10.245.246.27]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2024 01:49:45 -0800 From: Jani Nikula To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: jani.nikula@intel.com Subject: [PATCH 1/3] drm/print: add drm_print_hex_dump() Date: Thu, 5 Dec 2024 11:49:33 +0200 Message-Id: X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Add a helper to print a hex dump to a struct drm_printer. There's no fancy formatting stuff, just 16 space-separated bytes per line, with an optional prefix. Signed-off-by: Jani Nikula Reviewed-by: Andi Shyti --- drivers/gpu/drm/drm_print.c | 23 +++++++++++++++++++++++ include/drm/drm_print.h | 2 ++ 2 files changed, 25 insertions(+) diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 08cfea04e22b..79517bd4418f 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -390,3 +390,26 @@ void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset) } } EXPORT_SYMBOL(drm_print_regset32); + +/** + * drm_print_hex_dump - print a hex dump to a &drm_printer stream + * @p: The &drm_printer + * @prefix: Prefix for each line, may be NULL for no prefix + * @buf: Buffer to dump + * @len: Length of buffer + * + * Print hex dump to &drm_printer, with 16 space-separated hex bytes per line, + * optionally with a prefix on each line. No separator is added after prefix. + */ +void drm_print_hex_dump(struct drm_printer *p, const char *prefix, + const u8 *buf, size_t len) +{ + int i; + + for (i = 0; i < len; i += 16) { + int bytes_per_line = min(16, len - i); + + drm_printf(p, "%s%*ph\n", prefix ?: "", bytes_per_line, buf + i); + } +} +EXPORT_SYMBOL(drm_print_hex_dump); diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index b3906dc04388..f77fe1531cf8 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -199,6 +199,8 @@ void drm_puts(struct drm_printer *p, const char *str); void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset); void drm_print_bits(struct drm_printer *p, unsigned long value, const char * const bits[], unsigned int nbits); +void drm_print_hex_dump(struct drm_printer *p, const char *prefix, + const u8 *buf, size_t len); __printf(2, 0) /**