From patchwork Tue Aug 13 17:41:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Summers, Stuart" X-Patchwork-Id: 11092723 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9D2AE1398 for ; Tue, 13 Aug 2019 17:40:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8746B283AD for ; Tue, 13 Aug 2019 17:40:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7BA08286B9; Tue, 13 Aug 2019 17:40:33 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 2BF8B285E8 for ; Tue, 13 Aug 2019 17:40:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5BDB06E20A; Tue, 13 Aug 2019 17:40:30 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id C1C536E1D2 for ; Tue, 13 Aug 2019 17:40:28 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Aug 2019 10:40:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,382,1559545200"; d="scan'208";a="178738067" Received: from jssummer-xeon.ra.intel.com ([10.23.184.90]) by orsmga003.jf.intel.com with ESMTP; 13 Aug 2019 10:40:27 -0700 From: Stuart Summers To: intel-gfx@lists.freedesktop.org Date: Tue, 13 Aug 2019 10:41:21 -0700 Message-Id: <20190813174121.129593-3-stuart.summers@intel.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190813174121.129593-1-stuart.summers@intel.com> References: <20190813174121.129593-1-stuart.summers@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/3] drm/i915: Add module parameter to remove RCS engine X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 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" X-Virus-Scanned: ClamAV using ClamSMTP In some debug scenarios, it might be interesting to load a platform without support for the render command streamer. Add a module parameter to allow this platform configuration. Signed-off-by: Stuart Summers --- drivers/gpu/drm/i915/i915_params.c | 3 +++ drivers/gpu/drm/i915/i915_params.h | 3 ++- drivers/gpu/drm/i915/intel_device_info.c | 3 +++ 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index 296452f9efe4..9c5115f0e0b1 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -178,6 +178,9 @@ i915_param_named(enable_gvt, bool, 0400, "Enable support for Intel GVT-g graphics virtualization host support(default:false)"); #endif +i915_param_named_unsafe(enable_rcs, bool, 0400, + "Enable the render command streamer. (default: true)"); + static __always_inline void _print_param(struct drm_printer *p, const char *name, const char *type, diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h index d29ade3b7de6..1f07ad5973df 100644 --- a/drivers/gpu/drm/i915/i915_params.h +++ b/drivers/gpu/drm/i915/i915_params.h @@ -77,7 +77,8 @@ struct drm_printer; param(bool, verbose_state_checks, true) \ param(bool, nuclear_pageflip, false) \ param(bool, enable_dp_mst, true) \ - param(bool, enable_gvt, false) + param(bool, enable_gvt, false) \ + param(bool, enable_rcs, true) #define MEMBER(T, member, ...) T member; struct i915_params { diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index f99c9fd497b2..2a80b0d61155 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -1042,4 +1042,7 @@ void intel_device_info_init_mmio(struct drm_i915_private *dev_priv) DRM_DEBUG_DRIVER("vebox enable: %04x, instances: %04lx\n", vebox_mask, VEBOX_MASK(dev_priv)); GEM_BUG_ON(vebox_mask != VEBOX_MASK(dev_priv)); + + if (!i915_modparams.enable_rcs) + info->engine_mask &= ~BIT(RCS0); }