From patchwork Fri Mar 22 00:44:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10864723 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 6ECD7922 for ; Fri, 22 Mar 2019 00:43:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4D6FF2A582 for ; Fri, 22 Mar 2019 00:43:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 41F5D2A587; Fri, 22 Mar 2019 00:43:36 +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 D58BF2A582 for ; Fri, 22 Mar 2019 00:43:35 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1FCDB6E21A; Fri, 22 Mar 2019 00:43:22 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id BFE326E20D; Fri, 22 Mar 2019 00:43:19 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Mar 2019 17:43:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,254,1549958400"; d="scan'208";a="142773734" Received: from nuc.iind.intel.com ([10.99.66.149]) by FMSMGA003.fm.intel.com with ESMTP; 21 Mar 2019 17:43:18 -0700 From: Ramalingam C To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch Subject: [PATCH v3 07/10] drm/i915: Populate downstream info for HDCP1.4 Date: Fri, 22 Mar 2019 06:14:45 +0530 Message-Id: <20190322004448.14045-8-ramalingam.c@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190322004448.14045-1-ramalingam.c@intel.com> References: <20190322004448.14045-1-ramalingam.c@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Implements drm blob property content_protection_downstream_info property on HDCP capable connectors. Downstream topology info is gathered across authentication stages and stored in intel_hdcp. When HDCP authentication is complete, new blob with latest downstream topology information is updated to content_protection_downstream_info property. v2: %s/cp_downstream/content_protection_downstream [daniel] v3: %s/content_protection_downstream/hdcp_topology [daniel] Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/intel_drv.h | 2 ++ drivers/gpu/drm/i915/intel_hdcp.c | 30 +++++++++++++++++++++++++++++- include/drm/drm_hdcp.h | 1 + include/uapi/drm/drm_mode.h | 5 +++++ 4 files changed, 37 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 4db15ee81042..46325fb33507 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -482,6 +482,8 @@ struct intel_hdcp { wait_queue_head_t cp_irq_queue; atomic_t cp_irq_count; int cp_irq_count_cached; + + struct hdcp_topology_info *topology_info; }; struct intel_connector { diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index 921f07c64350..0e3d7afecd5a 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -580,6 +580,9 @@ int intel_hdcp_auth_downstream(struct intel_hdcp *hdcp, if (num_downstream == 0) return -EINVAL; + hdcp->topology_info->device_count = num_downstream; + hdcp->topology_info->depth = DRM_HDCP_DEPTH(bstatus[1]); + ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL); if (!ksv_fifo) return -ENOMEM; @@ -593,6 +596,8 @@ int intel_hdcp_auth_downstream(struct intel_hdcp *hdcp, return -EPERM; } + memcpy(hdcp->topology_info->ksv_list, ksv_fifo, + num_downstream * DRM_HDCP_KSV_LEN); /* * When V prime mismatches, DP Spec mandates re-read of * V prime atleast twice. @@ -694,15 +699,20 @@ static int intel_hdcp_auth(struct intel_connector *connector) return -EPERM; } + hdcp->topology_info->ver_in_force = DRM_MODE_HDCP14_IN_FORCE; + memcpy(hdcp->topology_info->bksv, bksv.shim, DRM_MODE_HDCP_KSV_LEN); + I915_WRITE(PORT_HDCP_BKSVLO(port), bksv.reg[0]); I915_WRITE(PORT_HDCP_BKSVHI(port), bksv.reg[1]); ret = shim->repeater_present(intel_dig_port, &repeater_present); if (ret) return ret; - if (repeater_present) + if (repeater_present) { I915_WRITE(HDCP_REP_CTL, intel_hdcp_get_repeater_ctl(intel_dig_port)); + hdcp->topology_info->is_repeater = true; + } ret = shim->toggle_signalling(intel_dig_port, true); if (ret) @@ -798,6 +808,12 @@ static int _intel_hdcp_disable(struct intel_connector *connector) return ret; } + memset(hdcp->topology_info, 0, sizeof(struct hdcp_topology_info)); + + if (drm_connector_update_hdcp_topology_property(&connector->base, + connector->hdcp.topology_info)) + DRM_ERROR("Downstream_info update failed.\n"); + DRM_DEBUG_KMS("HDCP is disabled\n"); return 0; } @@ -831,6 +847,10 @@ static int _intel_hdcp_enable(struct intel_connector *connector) ret = intel_hdcp_auth(connector); if (!ret) { connector->hdcp.hdcp_encrypted = true; + if (drm_connector_update_hdcp_topology_property( + &connector->base, + connector->hdcp.topology_info)) + DRM_ERROR("Downstream_info update failed.\n"); return 0; } @@ -1882,6 +1902,14 @@ int intel_hdcp_init(struct intel_connector *connector, if (ret) return ret; + ret = drm_connector_attach_hdcp_topology_property(&connector->base); + if (ret) + return ret; + + hdcp->topology_info = kzalloc(sizeof(*hdcp->topology_info), GFP_KERNEL); + if (!hdcp->topology_info) + return -ENOMEM; + hdcp->shim = shim; mutex_init(&hdcp->mutex); INIT_DELAYED_WORK(&hdcp->check_work, intel_hdcp_check_work); diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index 652aaf5d658e..654a170f03eb 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -23,6 +23,7 @@ #define DRM_HDCP_V_PRIME_PART_LEN 4 #define DRM_HDCP_V_PRIME_NUM_PARTS 5 #define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x7f) +#define DRM_HDCP_DEPTH(x) ((x) & 0x7) #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3)) #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7)) diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 03d3aa2b1a49..733db7283e57 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -216,8 +216,13 @@ extern "C" { #define DRM_MODE_HDCP_KSV_LEN 5 #define DRM_MODE_HDCP_MAX_DEVICE_CNT 127 +#define DRM_MODE_HDCP14_IN_FORCE (1 << 0) +#define DRM_MODE_HDCP22_IN_FORCE (1 << 1) struct hdcp_topology_info { + /* Version of HDCP authenticated (1.4/2.2) */ + __u32 ver_in_force; + /* KSV of immediate HDCP Sink. In Little-Endian Format. */ char bksv[DRM_MODE_HDCP_KSV_LEN];