From patchwork Fri Apr 5 08:43:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10887055 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 E198817E9 for ; Fri, 5 Apr 2019 08:42:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD50628AA1 for ; Fri, 5 Apr 2019 08:42:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C16E028B04; Fri, 5 Apr 2019 08:42:04 +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 423C928AA1 for ; Fri, 5 Apr 2019 08:42:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7A1006E2BC; Fri, 5 Apr 2019 08:41:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4BB0A6E2E9; Fri, 5 Apr 2019 08:41:47 +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 fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Apr 2019 01:41:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,310,1549958400"; d="scan'208";a="146807031" Received: from ram-dut.iind.intel.com ([10.223.34.157]) by FMSMGA003.fm.intel.com with ESMTP; 05 Apr 2019 01:41:46 -0700 From: Ramalingam C To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, daniel@ffwll.ch Subject: [PATCH v4 13/13] drm/i915: Populate downstream info for HDCP Date: Fri, 5 Apr 2019 14:13:02 +0530 Message-Id: <20190405084302.5548-14-ramalingam.c@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190405084302.5548-1-ramalingam.c@intel.com> References: <20190405084302.5548-1-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: , Cc: gwan-gyeong.mun@intel.com 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] v4: Rebased. Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/intel_drv.h | 2 + drivers/gpu/drm/i915/intel_hdcp.c | 87 ++++++++++++++++++++++++++----- include/drm/drm_hdcp.h | 1 + 3 files changed, 76 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index e387e842f414..6a321a56ce42 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 f70f1e98e4ae..6993bb9ecd0b 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -490,9 +490,10 @@ int intel_hdcp_validate_v_prime(struct intel_digital_port *intel_dig_port, /* Implements Part 2 of the HDCP authorization procedure */ static -int intel_hdcp_auth_downstream(struct intel_digital_port *intel_dig_port, - const struct intel_hdcp_shim *shim) +int intel_hdcp_auth_downstream(struct intel_hdcp *hdcp, + struct intel_digital_port *intel_dig_port) { + const struct intel_hdcp_shim *shim = hdcp->shim; u8 bstatus[2], num_downstream, *ksv_fifo; int ret, i, tries = 3; @@ -523,6 +524,9 @@ int intel_hdcp_auth_downstream(struct intel_digital_port *intel_dig_port, 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; @@ -536,6 +540,8 @@ int intel_hdcp_auth_downstream(struct intel_digital_port *intel_dig_port, 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. @@ -562,9 +568,11 @@ int intel_hdcp_auth_downstream(struct intel_digital_port *intel_dig_port, } /* Implements Part 1 of the HDCP authorization procedure */ -static int intel_hdcp_auth(struct intel_digital_port *intel_dig_port, - const struct intel_hdcp_shim *shim) +static int intel_hdcp_auth(struct intel_connector *connector) { + struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector); + struct intel_hdcp *hdcp = &connector->hdcp; + const struct intel_hdcp_shim *shim = hdcp->shim; struct drm_i915_private *dev_priv; enum port port; unsigned long r0_prime_gen_start; @@ -635,15 +643,20 @@ static int intel_hdcp_auth(struct intel_digital_port *intel_dig_port, 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) @@ -708,7 +721,7 @@ static int intel_hdcp_auth(struct intel_digital_port *intel_dig_port, */ if (repeater_present) - return intel_hdcp_auth_downstream(intel_dig_port, shim); + return intel_hdcp_auth_downstream(hdcp, intel_dig_port); DRM_DEBUG_KMS("HDCP is enabled (no repeater present)\n"); return 0; @@ -739,13 +752,18 @@ 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; } static int _intel_hdcp_enable(struct intel_connector *connector) { - struct intel_hdcp *hdcp = &connector->hdcp; struct drm_i915_private *dev_priv = connector->base.dev->dev_private; int i, ret, tries = 3; @@ -770,9 +788,13 @@ static int _intel_hdcp_enable(struct intel_connector *connector) /* Incase of authentication failures, HDCP spec expects reauth. */ for (i = 0; i < tries; i++) { - ret = intel_hdcp_auth(conn_to_dig_port(connector), hdcp->shim); + ret = intel_hdcp_auth(connector); if (!ret) { - hdcp->hdcp_encrypted = true; + 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; } @@ -1206,6 +1228,12 @@ static int hdcp2_authentication_key_exchange(struct intel_connector *connector) return -EPERM; } + hdcp->topology_info->ver_in_force = DRM_MODE_HDCP22_IN_FORCE; + hdcp->topology_info->content_type = hdcp->content_type; + memcpy(hdcp->topology_info->bksv, msgs.send_cert.cert_rx.receiver_id, + HDCP_2_2_RECEIVER_ID_LEN); + hdcp->topology_info->is_repeater = hdcp->is_repeater; + /* * Here msgs.no_stored_km will hold msgs corresponding to the km * stored also. @@ -1397,6 +1425,11 @@ int hdcp2_authenticate_repeater_topology(struct intel_connector *connector) return -EPERM; } + hdcp->topology_info->device_count = device_cnt; + hdcp->topology_info->depth = HDCP_2_2_DEPTH(rx_info[0]); + memcpy(hdcp->topology_info->ksv_list, msgs.recvid_list.receiver_ids, + device_cnt * HDCP_2_2_RECEIVER_ID_LEN); + ret = hdcp2_verify_rep_topology_prepare_ack(connector, &msgs.recvid_list, &msgs.rep_ack); @@ -1583,6 +1616,12 @@ static int _intel_hdcp2_enable(struct intel_connector *connector) if (ret) { DRM_DEBUG_KMS("HDCP2 Type%d Enabling Failed. (%d)\n", hdcp->content_type, ret); + + memset(hdcp->topology_info, 0, + sizeof(struct hdcp_topology_info)); + drm_connector_update_hdcp_topology_property(&connector->base, + hdcp->topology_info); + return ret; } @@ -1590,12 +1629,16 @@ static int _intel_hdcp2_enable(struct intel_connector *connector) connector->base.name, connector->base.base.id, hdcp->content_type); + drm_connector_update_hdcp_topology_property(&connector->base, + hdcp->topology_info); hdcp->hdcp2_encrypted = true; + return 0; } static int _intel_hdcp2_disable(struct intel_connector *connector) { + struct intel_hdcp *hdcp = &connector->hdcp; int ret; DRM_DEBUG_KMS("[%s:%d] HDCP2.2 is being Disabled\n", @@ -1606,8 +1649,11 @@ static int _intel_hdcp2_disable(struct intel_connector *connector) if (hdcp2_deauthenticate_port(connector) < 0) DRM_DEBUG_KMS("Port deauth failed.\n"); - connector->hdcp.hdcp2_encrypted = false; + hdcp->hdcp2_encrypted = false; + memset(hdcp->topology_info, 0, sizeof(struct hdcp_topology_info)); + drm_connector_update_hdcp_topology_property(&connector->base, + hdcp->topology_info); return ret; } @@ -1824,10 +1870,17 @@ int intel_hdcp_init(struct intel_connector *connector, ret = drm_connector_attach_content_protection_property(&connector->base, hdcp->hdcp2_supported); - if (ret) { - hdcp->hdcp2_supported = false; - kfree(hdcp->port_data.streams); - return ret; + if (ret) + goto err_exit; + + ret = drm_connector_attach_hdcp_topology_property(&connector->base); + if (ret) + goto err_exit; + + hdcp->topology_info = kzalloc(sizeof(*hdcp->topology_info), GFP_KERNEL); + if (!hdcp->topology_info) { + ret = -ENOMEM; + goto err_exit; } hdcp->shim = shim; @@ -1837,6 +1890,12 @@ int intel_hdcp_init(struct intel_connector *connector, init_waitqueue_head(&hdcp->cp_irq_queue); return 0; + +err_exit: + hdcp->hdcp2_supported = false; + kfree(hdcp->port_data.streams); + + return ret; } int intel_hdcp_enable(struct intel_connector *connector, u8 content_type) diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index fdd65a14f4db..330e34715aa4 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))