From patchwork Thu Aug 6 11:49:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 6958401 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8727C9F358 for ; Thu, 6 Aug 2015 11:49:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8BF472068A for ; Thu, 6 Aug 2015 11:49:31 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 952B520688 for ; Thu, 6 Aug 2015 11:49:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 915DF6EB71; Thu, 6 Aug 2015 04:49:29 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id C8C6D6EB71 for ; Thu, 6 Aug 2015 04:49:27 -0700 (PDT) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP; 06 Aug 2015 04:49:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,622,1432623600"; d="scan'208";a="778999644" Received: from spmyler-mobl.ger.corp.intel.com (HELO patser.lan) ([10.252.20.94]) by orsmga002.jf.intel.com with ESMTP; 06 Aug 2015 04:49:25 -0700 To: intel-gfx@lists.freedesktop.org References: <1438771031-23227-1-git-send-email-maarten.lankhorst@linux.intel.com> <1438771031-23227-5-git-send-email-maarten.lankhorst@linux.intel.com> From: Maarten Lankhorst Message-ID: <55C349C2.4040909@linux.intel.com> Date: Thu, 6 Aug 2015 13:49:22 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: <1438771031-23227-5-git-send-email-maarten.lankhorst@linux.intel.com> Subject: [Intel-gfx] [PATCH v3.1 04/13] drm/i915: Convert connector checking to atomic, v3. 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Right now dpms callbacks can still fiddle with the connector state, but it can only turn connectors off. This is remediated by only checking crtc->state->active when the connector is active, and ignore crtc->state->active when the connector is off. connectors_active is no longer checked, and will be removed later in this series together with dpms. Another check for !encoder->crtc is performed by check_encoder_state too, so it can be removed. Changes since v1: - Add commit message. - rename state to old_state. - Move deletion of mst_port check to mst patch. Changes since v2: - Fix a null pointer dereference on MST now hw readout is fixed. Signed-off-by: Maarten Lankhorst Reviewed-by: Ander Conselvan de Oliveira diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 77b4da7e698c..9baddc16b285 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6360,38 +6360,36 @@ static void intel_encoder_dpms(struct intel_encoder *encoder, int mode) * internal consistency). */ static void intel_connector_check_state(struct intel_connector *connector) { + struct drm_crtc *crtc = connector->base.state->crtc; + + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", + connector->base.base.id, + connector->base.name); + if (connector->get_hw_state(connector)) { - struct intel_encoder *encoder = connector->encoder; - struct drm_crtc *crtc; - bool encoder_enabled; - enum pipe pipe; + struct drm_encoder *encoder = &connector->encoder->base; + struct drm_connector_state *conn_state = connector->base.state; - DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", - connector->base.base.id, - connector->base.name); + I915_STATE_WARN(!crtc, + "connector enabled without attached crtc\n"); - I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF, - "wrong connector dpms state\n"); - I915_STATE_WARN(connector->base.encoder != &encoder->base, - "active connector not linked to encoder\n"); + if (!crtc) + return; - if (encoder) { - I915_STATE_WARN(!encoder->connectors_active, - "encoder->connectors_active not set\n"); + I915_STATE_WARN(!crtc->state->active, + "connector is active, but attached crtc isn't\n"); - encoder_enabled = encoder->get_hw_state(encoder, &pipe); - I915_STATE_WARN(!encoder_enabled, "encoder not enabled\n"); - if (I915_STATE_WARN_ON(!encoder->base.crtc)) - return; + if (!encoder) + return; - crtc = encoder->base.crtc; + I915_STATE_WARN(conn_state->best_encoder != encoder, + "atomic encoder doesn't match attached encoder\n"); - I915_STATE_WARN(!crtc->state->enable, - "crtc not enabled\n"); - I915_STATE_WARN(!to_intel_crtc(crtc)->active, "crtc not active\n"); - I915_STATE_WARN(pipe != to_intel_crtc(crtc)->pipe, - "encoder active on the wrong pipe\n"); - } + I915_STATE_WARN(conn_state->crtc != encoder->crtc, + "attached encoder crtc differs from connector crtc\n"); + } else { + I915_STATE_WARN(!crtc && connector->base.state->best_encoder, + "best encoder set without crtc!\n"); } } @@ -12699,20 +12697,23 @@ static void check_wm_state(struct drm_device *dev) } static void -check_connector_state(struct drm_device *dev) +check_connector_state(struct drm_device *dev, + struct drm_atomic_state *old_state) { - struct intel_connector *connector; + struct drm_connector_state *old_conn_state; + struct drm_connector *connector; + int i; - for_each_intel_connector(dev, connector) { - struct drm_encoder *encoder = connector->base.encoder; - struct drm_connector_state *state = connector->base.state; + for_each_connector_in_state(old_state, connector, old_conn_state, i) { + struct drm_encoder *encoder = connector->encoder; + struct drm_connector_state *state = connector->state; /* This also checks the encoder/connector hw state with the * ->get_hw_state callbacks. */ - intel_connector_check_state(connector); + intel_connector_check_state(to_intel_connector(connector)); I915_STATE_WARN(state->best_encoder != encoder, - "connector's staged encoder doesn't match current encoder\n"); + "connector's atomic encoder doesn't match legacy encoder\n"); } } @@ -12903,7 +12904,7 @@ intel_modeset_check_state(struct drm_device *dev, struct drm_atomic_state *old_state) { check_wm_state(dev); - check_connector_state(dev); + check_connector_state(dev, old_state); check_encoder_state(dev); check_crtc_state(dev); check_shared_dpll_state(dev);