From patchwork Wed Sep 14 00:58:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: John Harrison X-Patchwork-Id: 12975441 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 B75A1C54EE9 for ; Wed, 14 Sep 2022 00:58:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3FC5810E79D; Wed, 14 Sep 2022 00:58:06 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 29CFD10E79B; Wed, 14 Sep 2022 00:57:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663117071; x=1694653071; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LLQxBEoakgKgCJqit2FMaUPgiezPhRWwDBmft0s2Q58=; b=A4kwevMMaBd6eMyL55VT3AVuq8Ey/OOrzqAdu3JL+OndR9eVJw4QlcY3 eEyLjmxJxXSxN69osSuUWqVX9BK5Yg0wuzUFewUGgMt01yS5qklvvA8iA kJ0050KS0cOOnxxefKVvxCUGAnnFd28aKRdb6drfZ3vmArhAnfIjtODcx S6ucBTDF6DB+fkjB1a92iCiOEa7+ABdhp5GUI9Nvvnr8LscoaMuExkscg fHGmV3QhAtHlzrzQhd9dc319GbUCrAIgulw9AxgDm2oflwKCcpMbtkG/k F+58pkTWftyd4f10+w99mZUYVhm86oKxHmeBcdmk7t9oLuEGcZD9yWrtc g==; X-IronPort-AV: E=McAfee;i="6500,9779,10469"; a="384592448" X-IronPort-AV: E=Sophos;i="5.93,313,1654585200"; d="scan'208";a="384592448" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Sep 2022 17:57:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,313,1654585200"; d="scan'208";a="792137901" Received: from relo-linux-5.jf.intel.com ([10.165.21.154]) by orsmga005.jf.intel.com with ESMTP; 13 Sep 2022 17:57:50 -0700 From: John.C.Harrison@Intel.com To: Intel-GFX@Lists.FreeDesktop.Org Subject: [PATCH v2 1/1] drm/i915/uc: Fix issues with overriding firmware files Date: Tue, 13 Sep 2022 17:58:21 -0700 Message-Id: <20220914005821.3702446-2-John.C.Harrison@Intel.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220914005821.3702446-1-John.C.Harrison@Intel.com> References: <20220914005821.3702446-1-John.C.Harrison@Intel.com> MIME-Version: 1.0 Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matthew Brost , Tvrtko Ursulin , Alan Previn , =?utf-8?q?Thomas_Hellstr?= =?utf-8?q?=C3=B6m?= , Lucas De Marchi , Venkata Sandeep Dhanalakota , Daniele Ceraolo Spurio , DRI-Devel@Lists.FreeDesktop.Org, Rodrigo Vivi , Vinay Belgaumkar , Umesh Nerlige Ramappa , John Harrison , Matthew Auld Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: John Harrison The earlier update to support reduced versioning of firmware files introduced an issue with the firmware override module parameter. If an invalid file was specified then an infinite loop could occur trying to find a backup firmware. The fix is that if an explicit override has been set, then don't scan for backup options because there is no point anyway. The user wanted X and if X is not available, that's their problem. This patch also fixes up the scanning loop code so that if an invalid file is passed in, it will exit rather than loop forever. So if the impossible situation did somehow occur in the future, it wouldn't be such a big problem. v2: Also remove ANSI colour codes that accidentally got left in an error message in the original patch. Fixes: 665ae9c9ca79 ("drm/i915/uc: Support for version reduced and multiple firmware files") Cc: Daniele Ceraolo Spurio Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Tvrtko Ursulin Cc: Matthew Brost Cc: Umesh Nerlige Ramappa Cc: Matthew Auld Cc: Alan Previn Cc: Matt Roper Cc: Lucas De Marchi Cc: Vinay Belgaumkar Cc: "Thomas Hellström" Cc: Venkata Sandeep Dhanalakota Signed-off-by: John Harrison Reviewed-by: Daniele Ceraolo Spurio --- drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c index af425916cdf64..1169e2a09da24 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c @@ -232,6 +232,7 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw) u32 fw_count; u8 rev = INTEL_REVID(i915); int i; + bool found; /* * The only difference between the ADL GuC FWs is the HWConfig support. @@ -246,6 +247,7 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw) fw_blobs = blobs_all[uc_fw->type].blobs; fw_count = blobs_all[uc_fw->type].count; + found = false; for (i = 0; i < fw_count && p <= fw_blobs[i].p; i++) { const struct uc_fw_blob *blob = &fw_blobs[i].blob; @@ -266,9 +268,15 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw) uc_fw->file_wanted.path = blob->path; uc_fw->file_wanted.major_ver = blob->major; uc_fw->file_wanted.minor_ver = blob->minor; + found = true; break; } + if (!found && uc_fw->file_selected.path) { + /* Failed to find a match for the last attempt?! */ + uc_fw->file_selected.path = NULL; + } + /* make sure the list is ordered as expected */ if (IS_ENABLED(CONFIG_DRM_I915_SELFTEST) && !verified) { verified = true; @@ -322,7 +330,7 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw) continue; bad: - drm_err(&i915->drm, "\x1B[35;1mInvalid FW blob order: %s r%u %s%d.%d.%d comes before %s r%u %s%d.%d.%d\n", + drm_err(&i915->drm, "Invalid FW blob order: %s r%u %s%d.%d.%d comes before %s r%u %s%d.%d.%d\n", intel_platform_name(fw_blobs[i - 1].p), fw_blobs[i - 1].rev, fw_blobs[i - 1].blob.legacy ? "L" : "v", fw_blobs[i - 1].blob.major, @@ -553,10 +561,14 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw) err = firmware_request_nowarn(&fw, uc_fw->file_selected.path, dev); memcpy(&file_ideal, &uc_fw->file_wanted, sizeof(file_ideal)); - if (!err || intel_uc_fw_is_overridden(uc_fw)) - goto done; + + /* Any error is terminal if overriding. Don't bother searching for older versions */ + if (err && intel_uc_fw_is_overridden(uc_fw)) + goto fail; while (err == -ENOENT) { + old_ver = true; + __uc_fw_auto_select(i915, uc_fw); if (!uc_fw->file_selected.path) { /* @@ -576,8 +588,6 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw) if (err) goto fail; - old_ver = true; -done: if (uc_fw->loaded_via_gsc) err = check_gsc_manifest(fw, uc_fw); else