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 C0936C27C50 for ; Tue, 28 May 2024 14:05:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B6BE111231C; Tue, 28 May 2024 14:05:25 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Sal9ylQD"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 629711122F1 for ; Tue, 28 May 2024 14:05:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716905113; x=1748441113; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=AIJomWTUGwFXAw4IA9bOE77H/XSqZN9E+G6fWSPoFRM=; b=Sal9ylQDoI3hdnyB2zD8XBMsJZO2oIRgBeh+UZw5SqGlRpf0NsfNcUVj iqSDAhrils2Aj6GQ7EOeq2Ux1O1ge/2NmWNAhjvyekA90pNZUJld0KaXe ot+IugfZ2yfyCCOQGRccD4I5WL+r02kDM/OKmZl0hajG2fnYqYLvlBI60 /IKQ+KbYD/0z17ND3GGLA+rrxrbLKaA0X+ba91Xi5AN3SrykYHTyh6O8a RvVeyUjHj2yajHu47VMhRJ/q7Ex2txheSm1Ro71QQAXSvAhZmdzgj3j4V EV4a5gzgQIsqYh6cMg43sUj1t95haDAMnvP2M/M72sgXbkMiKIojHg4W5 Q==; X-CSE-ConnectionGUID: Sp71K8MTTJWRE4FelQPU8A== X-CSE-MsgGUID: yuU5kt/0R0isofqaWqV6uw== X-IronPort-AV: E=McAfee;i="6600,9927,11085"; a="13074960" X-IronPort-AV: E=Sophos;i="6.08,195,1712646000"; d="scan'208";a="13074960" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2024 07:05:11 -0700 X-CSE-ConnectionGUID: ZBeBd31pSfOOc1FwuHhrKA== X-CSE-MsgGUID: HaQbNNEtS1uebrF1tImsqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,195,1712646000"; d="scan'208";a="58273596" Received: from lab-ah.igk.intel.com ([10.102.138.202]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2024 07:05:09 -0700 From: Andrzej Hajda Date: Tue, 28 May 2024 16:04:50 +0200 Subject: [PATCH v5 4/5] lib/igt_sysfs: add helpers to access engine sysfs directory MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240528-iga64_inline_ups-v5-4-fdd8e9dcd64c@intel.com> References: <20240528-iga64_inline_ups-v5-0-fdd8e9dcd64c@intel.com> In-Reply-To: <20240528-iga64_inline_ups-v5-0-fdd8e9dcd64c@intel.com> To: igt-dev@lists.freedesktop.org Cc: Kamil Konieczny , Dominik Grzegorzek , Christoph Manszewski , =?utf-8?q?Zbigniew_Kempczy=C5=84ski?= , Gwan-gyeong Mun , Andrzej Hajda X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3077; i=andrzej.hajda@intel.com; h=from:subject:message-id; bh=AIJomWTUGwFXAw4IA9bOE77H/XSqZN9E+G6fWSPoFRM=; b=owEB7QES/pANAwAKASNispPeEP3XAcsmYgBmVeSMfsccQGJedQXrt42Yortb+5gMVncR6jL6lmIo pbd/0t+JAbMEAAEKAB0WIQT8qEQxNN2/XeF/A00jYrKT3hD91wUCZlXkjAAKCRAjYrKT3hD910Y1C/ sFQ67LAPK5uN3OvEifBQT1m8SuA7yQzwOW7TcB7yltMBvi5VCATp8DLY4C+zECAEz+02azeiaWAmJo 1PbFQ+kefSdHbV59bjfmijXEf3LgFgw+KpfTLPJhTnuo8E+WIvKEauG14+mflcZwogVVMgT2Jbi8gv XfRqmqs9AnPw87Dx2f3/KsuIKvaJiIzlcoTe9s7ZDSlk9JKc5ftXwpKlLHNmK1q4Qk1/mCYAxMaPSf oYh8nIs0+wIo4IdN8Eml7s0WVhMQiA8g4EUCobOCQW5yI13ydBllydI5KVw0+GAZGiCHvpjeOIt0Te WvkglrW1K3GWFuu/ynPwyB/eYaIImtJ/LzA8TQ7HBnV6ySsDm5Ra+N5nQpv2M5mI585nrEmRGxJOIk 3i5XhqMqbvUVv30wLI2eBH9ldG/BBvQZl6wyOErw9GaL+64cFp9LoXw9yic00oVmb+q24CqCwcmxy4 pPyXhzGwDrpA+RBht6lPphE+y4eXxxz+FhSpsEkNXrpsQ= X-Developer-Key: i=andrzej.hajda@intel.com; a=openpgp; fpr=FCA8443134DDBF5DE17F034D2362B293DE10FDD7 X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Helpers follow convention of xe_sysfs_gt_(path|open). Signed-off-by: Andrzej Hajda --- lib/igt_sysfs.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/igt_sysfs.h | 3 +++ 2 files changed, 74 insertions(+) diff --git a/lib/igt_sysfs.c b/lib/igt_sysfs.c index 0c5817eb1580..e11eecc25aa1 100644 --- a/lib/igt_sysfs.c +++ b/lib/igt_sysfs.c @@ -40,7 +40,9 @@ #include #include #include +#include +#include "drmtest.h" #include "igt_core.h" #include "igt_sysfs.h" #include "igt_device.h" @@ -263,6 +265,75 @@ int xe_sysfs_gt_open(int xe_device, int gt) return open(path, O_RDONLY); } +static const char *engine_class_to_str(__u16 class) +{ + const char *str[] = { + [DRM_XE_ENGINE_CLASS_RENDER] = "rcs", + [DRM_XE_ENGINE_CLASS_COPY] = "bcs", + [DRM_XE_ENGINE_CLASS_VIDEO_DECODE] = "vcs", + [DRM_XE_ENGINE_CLASS_VIDEO_ENHANCE] = "vecs", + [DRM_XE_ENGINE_CLASS_COMPUTE] = "ccs", + }; + + if (class < ARRAY_SIZE(str)) + return str[class]; + + return "unk"; +} + +/** + * xe_sysfs_engine_path: + * @xe_device: fd of the device + * @gt: gt number + * @class: engine class + * @path: buffer to fill with the sysfs gt path to the device + * @pathlen: length of @path buffer + * + * Returns: + * The directory path, or NULL on failure. + */ +char * +xe_sysfs_engine_path(int xe_device, int gt, int class, char *path, int pathlen) +{ + struct stat st; + int tile = IS_PONTEVECCHIO(intel_get_drm_devid(xe_device)) ? gt : 0; + + if (xe_device < 0) + return NULL; + + if (igt_debug_on(fstat(xe_device, &st)) || igt_debug_on(!S_ISCHR(st.st_mode))) + return NULL; + + snprintf(path, pathlen, "/sys/dev/char/%d:%d/device/tile%d/gt%d/engines/%s", + major(st.st_rdev), minor(st.st_rdev), tile, gt, engine_class_to_str(class)); + + if (!access(path, F_OK)) + return path; + + return NULL; +} + +/** + * xe_sysfs_engine_open: + * @xe_device: fd of the device + * @gt: gt number + * @class: engine class + * + * This opens the sysfs gt directory corresponding to device and tile for use + * + * Returns: + * The directory fd, or -1 on failure. + */ +int xe_sysfs_engine_open(int xe_device, int gt, int class) +{ + char path[96]; + + if (!xe_sysfs_engine_path(xe_device, gt, class, path, sizeof(path))) + return -1; + + return open(path, O_RDONLY); +} + /** * igt_sysfs_gt_path: * @device: fd of the device diff --git a/lib/igt_sysfs.h b/lib/igt_sysfs.h index f37d80ec130e..6c604d939013 100644 --- a/lib/igt_sysfs.h +++ b/lib/igt_sysfs.h @@ -166,4 +166,7 @@ int xe_sysfs_gt_open(int xe_device, int gt); char *xe_sysfs_tile_path(int xe_device, int tile, char *path, int pathlen); int xe_sysfs_tile_open(int xe_device, int tile); int xe_sysfs_get_num_tiles(int xe_device); +char *xe_sysfs_engine_path(int xe_device, int gt, int class, char *path, int pathlen); +int xe_sysfs_engine_open(int xe_device, int gt, int class); + #endif /* __IGT_SYSFS_H__ */ -- 2.34.1