From patchwork Tue Feb 26 07:36:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10829651 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 9AF591805 for ; Tue, 26 Feb 2019 07:42:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8CF402AA7E for ; Tue, 26 Feb 2019 07:42:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 814442AAAD; Tue, 26 Feb 2019 07:42:45 +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=unavailable 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 9DB102AA7E for ; Tue, 26 Feb 2019 07:42:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6EE5889C98; Tue, 26 Feb 2019 07:42:26 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id DA734895C1; Tue, 26 Feb 2019 07:42:17 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Feb 2019 23:42:17 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,414,1544515200"; d="scan'208";a="125259597" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by fmsmga007.fm.intel.com with ESMTP; 25 Feb 2019 23:42:15 -0800 From: Ramalingam C To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch, uma.shankar@intel.com Subject: [PATCH 08/10] drm/i915: Populate downstream info for HDCP1.4 Date: Tue, 26 Feb 2019 13:06:07 +0530 Message-Id: <1551166569-19683-9-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551166569-19683-1-git-send-email-ramalingam.c@intel.com> References: <1551166569-19683-1-git-send-email-ramalingam.c@intel.com> 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: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Implements drm blob property cp_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 cp_downstream_info property. Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/intel_drv.h | 2 ++ drivers/gpu/drm/i915/intel_hdcp.c | 32 +++++++++++++++++++++++++++++++- include/drm/drm_hdcp.h | 1 + include/uapi/drm/drm_mode.h | 5 +++++ 4 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 53a463d40f43..c7ef7e71439d 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -487,6 +487,8 @@ struct intel_hdcp { unsigned int revocated_ksv_cnt; u8 *revocated_ksv_list; u32 srm_blob_id; + + struct cp_downstream_info *downstream_info; }; struct intel_connector { diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index b92fc0383788..9ce634e552c1 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -563,6 +563,9 @@ int intel_hdcp_auth_downstream(struct intel_hdcp *hdcp, if (num_downstream == 0) return -EINVAL; + hdcp->downstream_info->device_count = num_downstream; + hdcp->downstream_info->depth = DRM_HDCP_DEPTH(bstatus[1]); + ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL); if (!ksv_fifo) return -ENOMEM; @@ -576,6 +579,8 @@ int intel_hdcp_auth_downstream(struct intel_hdcp *hdcp, return -EPERM; } + memcpy(hdcp->downstream_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. @@ -677,15 +682,20 @@ static int intel_hdcp_auth(struct intel_connector *connector) return -EPERM; } + hdcp->downstream_info->ver_in_force = DRM_MODE_HDCP14_IN_FORCE; + memcpy(hdcp->downstream_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->downstream_info->is_repeater = true; + } ret = shim->toggle_signalling(intel_dig_port, true); if (ret) @@ -781,6 +791,13 @@ static int _intel_hdcp_disable(struct intel_connector *connector) return ret; } + memset(hdcp->downstream_info, 0, sizeof(struct cp_downstream_info)); + + if (drm_mode_connector_update_cp_downstream_property( + &connector->base, + connector->hdcp.downstream_info)) + DRM_ERROR("Downstream_info update failed.\n"); + DRM_DEBUG_KMS("HDCP is disabled\n"); return 0; } @@ -814,6 +831,10 @@ static int _intel_hdcp_enable(struct intel_connector *connector) ret = intel_hdcp_auth(connector); if (!ret) { connector->hdcp.hdcp_encrypted = true; + if (drm_mode_connector_update_cp_downstream_property( + &connector->base, + connector->hdcp.downstream_info)) + DRM_ERROR("Downstream_info update failed.\n"); return 0; } @@ -1874,6 +1895,15 @@ int intel_hdcp_init(struct intel_connector *connector, if (ret) return ret; + ret = drm_connector_attach_cp_downstream_property(&connector->base); + if (ret) + return ret; + + hdcp->downstream_info = kzalloc(sizeof(*hdcp->downstream_info), + GFP_KERNEL); + if (!hdcp->downstream_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 1e630a593b73..2787a2d555b4 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 aae84d025518..93403b2631ef 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 cp_downstream_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];