From patchwork Thu Aug 18 17:10:49 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Gordon X-Patchwork-Id: 9288515 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 53719600CB for ; Thu, 18 Aug 2016 17:11:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FAA528EF9 for ; Thu, 18 Aug 2016 17:11:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 347CD28EFC; Thu, 18 Aug 2016 17:11:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D570328EF9 for ; Thu, 18 Aug 2016 17:11:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5F1226EAE5; Thu, 18 Aug 2016 17:11:08 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id 4F7236EADE for ; Thu, 18 Aug 2016 17:11:06 +0000 (UTC) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 18 Aug 2016 10:11:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.28,540,1464678000"; d="scan'208"; a="1027827704" Received: from dsgordon-linux2.isw.intel.com ([10.102.226.88]) by fmsmga001.fm.intel.com with ESMTP; 18 Aug 2016 10:11:05 -0700 From: Dave Gordon To: intel-gfx@lists.freedesktop.org Date: Thu, 18 Aug 2016 18:10:49 +0100 Message-Id: <1471540252-16928-3-git-send-email-david.s.gordon@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1471540252-16928-1-git-send-email-david.s.gordon@intel.com> References: <1471540252-16928-1-git-send-email-david.s.gordon@intel.com> Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ Subject: [Intel-gfx] [PATCH v4 2/5] drm/i915/guc: symbolic names for GuC firmare loading preferences X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP The existing code that accesses the "enable_guc_loading" parameter uses explicit numerical values for the various possibilities, including in one case relying on boolean 0/1 mapping to specific values (which could be confusing for maintainers). So this patch just provides and uses names for the values representing the DEFAULT, DISABLED, PREFERRED, and MANDATORY options that the user can select (-1, 0, 1, 2 respectively). This should produce identical code to the previous version! Signed-off-by: Dave Gordon Cc: Tvrtko Ursulin Cc: Jani Nikula --- drivers/gpu/drm/i915/intel_guc.h | 14 ++++++++++++++ drivers/gpu/drm/i915/intel_guc_loader.c | 13 +++++++------ 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index 941d70e..83c2f295 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -89,12 +89,26 @@ struct i915_guc_client { uint64_t submissions[I915_NUM_ENGINES]; }; +/* + * These signed ranges represent user-requested preferences. + * Out-of-range values from the user will be clipped towards + * zero: any negative value is treated as -1, anything over 2 + * is just 2. ANY user-supplied value also taints the kernel. + */ enum { GUC_SUBMISSION_DEFAULT = -1, GUC_SUBMISSION_DISABLED = 0, GUC_SUBMISSION_PREFERRED, GUC_SUBMISSION_MANDATORY }; +enum { + FIRMWARE_LOAD_DEFAULT = -1, + FIRMWARE_LOAD_DISABLED = 0, + FIRMWARE_LOAD_PREFERRED, + FIRMWARE_LOAD_MANDATORY +}; + +/* These represent the actual firmware status */ enum intel_guc_fw_status { GUC_FIRMWARE_FAIL = -1, GUC_FIRMWARE_NONE = 0, diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index 49f846c..da047a8 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -438,7 +438,7 @@ int intel_guc_setup(struct drm_device *dev) intel_guc_fw_status_repr(guc_fw->guc_fw_load_status)); /* Loading forbidden, or no firmware to load? */ - if (!i915.enable_guc_loading) { + if (i915.enable_guc_loading == FIRMWARE_LOAD_DISABLED) { err = 0; goto fail; } else if (fw_path == NULL) { @@ -533,7 +533,7 @@ int intel_guc_setup(struct drm_device *dev) * nonfatal error (i.e. it doesn't prevent driver load, but * marks the GPU as wedged until reset). */ - if (i915.enable_guc_loading > 1) { + if (i915.enable_guc_loading >= FIRMWARE_LOAD_MANDATORY) { ret = -EIO; } else if (i915.enable_guc_submission >= GUC_SUBMISSION_MANDATORY) { ret = -EIO; @@ -699,9 +699,10 @@ void intel_guc_init(struct drm_device *dev) struct intel_guc_fw *guc_fw = &dev_priv->guc.guc_fw; const char *fw_path; - /* A negative value means "use platform default" */ - if (i915.enable_guc_loading < 0) - i915.enable_guc_loading = HAS_GUC_UCODE(dev); + /* Any negative value means "use platform default" */ + if (i915.enable_guc_loading <= FIRMWARE_LOAD_DEFAULT) + i915.enable_guc_loading = HAS_GUC_UCODE(dev) ? + FIRMWARE_LOAD_PREFERRED : FIRMWARE_LOAD_DISABLED; if (i915.enable_guc_submission <= GUC_SUBMISSION_DEFAULT) i915.enable_guc_submission = HAS_GUC_SCHED(dev) ? GUC_SUBMISSION_PREFERRED : GUC_SUBMISSION_DISABLED; @@ -730,7 +731,7 @@ void intel_guc_init(struct drm_device *dev) guc_fw->guc_fw_load_status = GUC_FIRMWARE_NONE; /* Early (and silent) return if GuC loading is disabled */ - if (!i915.enable_guc_loading) + if (i915.enable_guc_loading == FIRMWARE_LOAD_DISABLED) return; if (fw_path == NULL) return;