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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69786C4363A for ; Tue, 27 Oct 2020 06:29:24 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 128D9207F7 for ; Tue, 27 Oct 2020 06:29:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 128D9207F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 620996EB07; Tue, 27 Oct 2020 06:29:19 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5BB246EB03; Tue, 27 Oct 2020 06:29:18 +0000 (UTC) IronPort-SDR: xWhOfakRxIPbqkLFwGa9WZPE9KRldlj/LD7mW6LsMDzKAOJ4+FI2GIqG+OOuPmNM6/9SlrfH73 oKGvxnNSqBrg== X-IronPort-AV: E=McAfee;i="6000,8403,9786"; a="147888588" X-IronPort-AV: E=Sophos;i="5.77,422,1596524400"; d="scan'208";a="147888588" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2020 23:29:17 -0700 IronPort-SDR: +rFbVnDr9W/pIElbYM1pci4ndi7WzdlXue5b+Kasf/HwkL3mRkYv/Sq95tgAjGnr5GKgzsnUzU bz+d5T+7pxjA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,422,1596524400"; d="scan'208";a="424318683" Received: from fmsmsx606.amr.corp.intel.com ([10.18.126.86]) by fmsmga001.fm.intel.com with ESMTP; 26 Oct 2020 23:29:18 -0700 Received: from bgsmsx605.gar.corp.intel.com (10.67.234.7) by fmsmsx606.amr.corp.intel.com (10.18.126.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 26 Oct 2020 23:29:17 -0700 Received: from bgsmsx604.gar.corp.intel.com (10.67.234.6) by BGSMSX605.gar.corp.intel.com (10.67.234.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 27 Oct 2020 11:59:14 +0530 Received: from bgsmsx604.gar.corp.intel.com ([10.67.234.6]) by BGSMSX604.gar.corp.intel.com ([10.67.234.6]) with mapi id 15.01.1713.004; Tue, 27 Oct 2020 11:59:14 +0530 From: "Shankar, Uma" To: "Gupta, Anshuman" , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" Thread-Topic: [PATCH v3 07/16] drm/i915/hdcp: Enable Gen12 HDCP 1.4 DP MST support Thread-Index: AQHWqTj90WkRzji77kOgShhDctnG46mrACCg Date: Tue, 27 Oct 2020 06:29:14 +0000 Message-ID: References: <20201023122112.15265-1-anshuman.gupta@intel.com> <20201023122112.15265-8-anshuman.gupta@intel.com> In-Reply-To: <20201023122112.15265-8-anshuman.gupta@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 x-originating-ip: [10.223.10.1] MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH v3 07/16] drm/i915/hdcp: Enable Gen12 HDCP 1.4 DP MST support X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Nikula, Jani" , "seanpaul@chromium.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" > -----Original Message----- > From: Anshuman Gupta > Sent: Friday, October 23, 2020 5:51 PM > To: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org > Cc: seanpaul@chromium.org; Nikula, Jani ; C, > Ramalingam ; Li, Juston ; > Shankar, Uma ; Gupta, Anshuman > > Subject: [PATCH v3 07/16] drm/i915/hdcp: Enable Gen12 HDCP 1.4 DP MST > support > > Enable HDCP 1.4 over DP MST for Gen12. > This also enable the stream encryption support for older generations, which was > missing earlier. > > v2: > - Added debug print for stream encryption. > - Disable the hdcp on port after disabling last stream > encryption. Don't see port disable here, Am I missing something. > > Cc: Ramalingam C > Signed-off-by: Anshuman Gupta > --- > drivers/gpu/drm/i915/display/intel_dp_mst.c | 10 ++--- > drivers/gpu/drm/i915/display/intel_hdcp.c | 46 ++++++++++++++------- > 2 files changed, 35 insertions(+), 21 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c > b/drivers/gpu/drm/i915/display/intel_dp_mst.c > index 16865b200062..f00e12fc83e8 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c > @@ -826,13 +826,9 @@ static struct drm_connector > *intel_dp_add_mst_connector(struct drm_dp_mst_topolo > intel_attach_force_audio_property(connector); > intel_attach_broadcast_rgb_property(connector); > > - > - /* TODO: Figure out how to make HDCP work on GEN12+ */ > - if (INTEL_GEN(dev_priv) < 12) { > - ret = intel_dp_init_hdcp(dig_port, intel_connector); > - if (ret) > - DRM_DEBUG_KMS("HDCP init failed, skipping.\n"); > - } > + ret = intel_dp_init_hdcp(dig_port, intel_connector); > + if (ret) > + drm_dbg_kms(&dev_priv->drm, "HDCP init failed, skipping.\n"); > > /* > * Reuse the prop from the SST connector because we're diff --git > a/drivers/gpu/drm/i915/display/intel_hdcp.c > b/drivers/gpu/drm/i915/display/intel_hdcp.c > index 61252d4be3dd..46c9bd588db1 100644 > --- a/drivers/gpu/drm/i915/display/intel_hdcp.c > +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c > @@ -612,7 +612,12 @@ int intel_hdcp_auth_downstream(struct intel_connector > *connector) > return ret; > } > > -/* Implements Part 1 of the HDCP authorization procedure */ > +/* > + * Implements Part 1 of the HDCP authorization procedure. > + * Authentication Part 1 steps for Multi-stream DisplayPort. > + * Step 1. Auth Part 1 sequence on the driving MST Trasport Link. > + * Step 2. Enable encryption for each stream that requires encryption. > + */ > static int intel_hdcp_auth(struct intel_connector *connector) { > struct intel_digital_port *dig_port = intel_attached_dig_port(connector); > @@ -766,10 +771,16 @@ static int intel_hdcp_auth(struct intel_connector > *connector) > return -ETIMEDOUT; > } > > - /* > - * XXX: If we have MST-connected devices, we need to enable encryption > - * on those as well. > - */ > + /* DP MST Auth Part 1 Step 2.a and Step 2.b */ > + if (shim->stream_encryption) { > + ret = shim->stream_encryption(dig_port, true); > + if (ret) { > + drm_err(&dev_priv->drm, "Failed to enable HDCP 1.4 > stream enc\n"); > + return ret; > + } > + drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 tras %s stream > encrypted\n", > + transcoder_name(hdcp->stream_transcoder)); > + } > > if (repeater_present) > return intel_hdcp_auth_downstream(connector); > @@ -790,19 +801,26 @@ static int _intel_hdcp_disable(struct intel_connector > *connector) > > drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being disabled...\n", > connector->base.name, connector->base.base.id); > + /* > + * Step 1: Deselect HDCP Multiplestream Bit. > + * Step 2: poll for stream encryption status to be disable. > + */ The above comment should be inside the callback, doesn't add value here. > + if (hdcp->shim->stream_encryption) { > + ret = hdcp->shim->stream_encryption(dig_port, false); > + if (ret) { > + drm_err(&dev_priv->drm, "Failed to disable HDCP 1.4 > stream enc\n"); > + return ret; > + } > + drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 trans %s stream > encryption disabled\n", > + transcoder_name(hdcp->stream_transcoder)); > + } > > /* > - * If there are other connectors on this port using HDCP, don't disable > - * it. Instead, toggle the HDCP signalling off on that particular > - * connector/pipe and exit. > + * If there are other connectors on this port using HDCP, don't disable it. > + * Repeat steps 1-2 for each stream that no longer requires encryption. > */ > - if (dig_port->num_hdcp_streams > 0) { > - ret = hdcp->shim->toggle_signalling(dig_port, > - cpu_transcoder, false); > - if (ret) > - DRM_ERROR("Failed to disable HDCP signalling\n"); > + if (dig_port->num_hdcp_streams > 0) > return ret; > - } > > hdcp->hdcp_encrypted = false; > intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port), 0); > -- > 2.26.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx