From patchwork Mon May 21 12:53:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10415113 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 32A076053B for ; Mon, 21 May 2018 13:02:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 20DF2288C6 for ; Mon, 21 May 2018 13:02:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 13EEE28899; Mon, 21 May 2018 13:02:25 +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 76AFC288C6 for ; Mon, 21 May 2018 13:02:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E9C1F6E3DF; Mon, 21 May 2018 13:02:20 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id C1E7E6E3DD; Mon, 21 May 2018 13:02:18 +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 orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 May 2018 06:02:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,426,1520924400"; d="scan'208";a="40968128" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by fmsmga007.fm.intel.com with ESMTP; 21 May 2018 06:02:14 -0700 From: Ramalingam C To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Mon, 21 May 2018 18:23:20 +0530 Message-Id: <1526907240-17639-2-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526907240-17639-1-git-send-email-ramalingam.c@intel.com> References: <1526907240-17639-1-git-send-email-ramalingam.c@intel.com> Subject: [Intel-gfx] [PATCH v4 01/41] drm: hdcp2.2 authentication msg definitions X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alexander.usyskin@intel.com, tomas.winkler@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This patch defines the hdcp2.2 protocol messages for authentication. v2: bit_fields are removed. Instead bitmasking used. [Tomas and Jani] prefix HDCP_2_2_ is added to the macros. [Tomas] v3: No Changes. v4: Style and spellings are fixed [Uma] Signed-off-by: Ramalingam C --- include/drm/drm_hdcp.h | 179 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index 98e63d870139..3993c95992eb 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -38,4 +38,183 @@ #define DRM_HDCP_DDC_BSTATUS 0x41 #define DRM_HDCP_DDC_KSV_FIFO 0x43 +#define DRM_HDCP_1_4_SRM_ID 0x8 +#define DRM_HDCP_1_4_VRL_LENGTH_SIZE 3 +#define DRM_HDCP_1_4_DCP_SIG_SIZE 40 + +/* Protocol message definition for HDCP2.2 specification */ +#define HDCP_STREAM_TYPE0 0x00 +#define HDCP_STREAM_TYPE1 0x01 + +/* HDCP2.2 Msg IDs */ +#define HDCP_2_2_NULL_MSG 1 +#define HDCP_2_2_AKE_INIT 2 +#define HDCP_2_2_AKE_SEND_CERT 3 +#define HDCP_2_2_AKE_NO_STORED_KM 4 +#define HDCP_2_2_AKE_STORED_KM 5 +#define HDCP_2_2_AKE_SEND_HPRIME 7 +#define HDCP_2_2_AKE_SEND_PAIRING_INFO 8 +#define HDCP_2_2_LC_INIT 9 +#define HDCP_2_2_LC_SEND_LPRIME 10 +#define HDCP_2_2_SKE_SEND_EKS 11 +#define HDCP_2_2_REP_SEND_RECVID_LIST 12 +#define HDCP_2_2_REP_SEND_ACK 15 +#define HDCP_2_2_REP_STREAM_MANAGE 16 +#define HDCP_2_2_REP_STREAM_READY 17 +#define HDCP_2_2_ERRATA_DP_STREAM_TYPE 50 + +#define HDCP_2_2_RTX_LEN 8 +#define HDCP_2_2_RRX_LEN 8 + +#define HDCP_2_2_K_PUB_RX_MOD_N_LEN 128 +#define HDCP_2_2_K_PUB_RX_EXP_E_LEN 3 +#define HDCP_2_2_K_PUB_RX_LEN (HDCP_2_2_K_PUB_RX_MOD_N_LEN + \ + HDCP_2_2_K_PUB_RX_EXP_E_LEN) + +#define HDCP_2_2_DCP_LLC_SIG_LEN 384 + +#define HDCP_2_2_E_KPUB_KM_LEN 128 +#define HDCP_2_2_E_KH_KM_M_LEN (16 + 16) +#define HDCP_2_2_H_PRIME_LEN 32 +#define HDCP_2_2_E_KH_KM_LEN 16 +#define HDCP_2_2_RN_LEN 8 +#define HDCP_2_2_L_PRIME_LEN 32 +#define HDCP_2_2_E_DKEY_KS_LEN 16 +#define HDCP_2_2_RIV_LEN 8 +#define HDCP_2_2_SEQ_NUM_LEN 3 +#define HDCP_2_2_LPRIME_HALF_LEN (HDCP_2_2_L_PRIME_LEN / 2) +#define HDCP_2_2_RECEIVER_ID_LEN DRM_HDCP_KSV_LEN +#define HDCP_2_2_MAX_DEVICE_COUNT 31 +#define HDCP_2_2_RECEIVER_IDS_MAX_LEN (HDCP_2_2_RECEIVER_ID_LEN * \ + HDCP_2_2_MAX_DEVICE_COUNT) +#define HDCP_2_2_MPRIME_LEN 32 + +/* Following Macros take a byte at a time for bit(s) masking */ +/* + * TODO: This has to be changed for DP MST, as multiple stream on + * same port is possible. + * For HDCP2.2 on HDMI and DP SST this value is always 1. + */ +#define HDCP_2_2_MAX_CONTENT_STREAMS_CNT 1 +#define HDCP_2_2_TXCAP_MASK_LEN 2 +#define HDCP_2_2_RXCAPS_LEN 3 +#define HDCP_2_2_RX_REPEATER(x) (x & BIT(0)) +#define HDCP_2_2_DP_HDCP_CAPABLE(x) (x & BIT(1)) +#define HDCP_2_2_RXINFO_LEN 2 + +/* HDCP1.x compliant device in downstream */ +#define HDCP_2_2_HDCP1_DEVICE_CONNECTED(x) (x & BIT(0)) + +/* HDCP2.0 Compliant repeater in downstream */ +#define HDCP_2_2_HDCP_2_0_REP_CONNECTED(x) (x & BIT(1)) +#define HDCP_2_2_MAX_CASCADE_EXCEEDED(x) (x & BIT(2)) +#define HDCP_2_2_MAX_DEVS_EXCEEDED(x) (x & BIT(3)) +#define HDCP_2_2_DEV_COUNT_LO(x) ((x & (0xF << 4)) >> 4) +#define HDCP_2_2_DEV_COUNT_HI(x) (x & BIT(0)) +#define HDCP_2_2_DEPTH(x) ((x & (0x7 << 1)) >> 1) + +struct hdcp2_cert_rx { + uint8_t receiver_id[HDCP_2_2_RECEIVER_ID_LEN]; + uint8_t kpub_rx[HDCP_2_2_K_PUB_RX_LEN]; + uint8_t reserved[2]; + uint8_t dcp_signature[HDCP_2_2_DCP_LLC_SIG_LEN]; +} __packed; + +struct hdcp2_streamid_type { + uint8_t stream_id; + uint8_t stream_type; +} __packed; + +/* + * The TxCaps field specified in the HDCP HDMI, DP specs + * This field is big endian as specified in the errata. + */ +struct hdcp2_tx_caps { + /* Transmitter must set this to 0x2 */ + uint8_t version; + + /* Reserved for HDCP and DP Spec. Read as Zero */ + uint8_t tx_cap_mask[HDCP_2_2_TXCAP_MASK_LEN]; +} __packed; + +/* Main structures for HDCP2.2 protocol communication */ +struct hdcp2_ake_init { + uint8_t msg_id; + uint8_t r_tx[HDCP_2_2_RTX_LEN]; + struct hdcp2_tx_caps tx_caps; +} __packed; + +struct hdcp2_ake_send_cert { + uint8_t msg_id; + struct hdcp2_cert_rx cert_rx; + uint8_t r_rx[HDCP_2_2_RRX_LEN]; + uint8_t rx_caps[HDCP_2_2_RXCAPS_LEN]; +} __packed; + +struct hdcp2_ake_no_stored_km { + uint8_t msg_id; + uint8_t e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN]; +} __packed; + +struct hdcp2_ake_stored_km { + uint8_t msg_id; + uint8_t e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN]; +} __packed; + +struct hdcp2_ake_send_hprime { + uint8_t msg_id; + uint8_t h_prime[HDCP_2_2_H_PRIME_LEN]; +} __packed; + +struct hdcp2_ake_send_pairing_info { + uint8_t msg_id; + uint8_t e_kh_km[HDCP_2_2_E_KH_KM_LEN]; +} __packed; + +struct hdcp2_lc_init { + uint8_t msg_id; + uint8_t r_n[HDCP_2_2_RN_LEN]; +} __packed; + +struct hdcp2_lc_send_lprime { + uint8_t msg_id; + uint8_t l_prime[HDCP_2_2_L_PRIME_LEN]; +} __packed; + +struct hdcp2_ske_send_eks { + uint8_t msg_id; + uint8_t e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN]; + uint8_t riv[HDCP_2_2_RIV_LEN]; +} __packed; + +struct hdcp2_rep_send_receiverid_list { + uint8_t msg_id; + uint8_t rx_info[HDCP_2_2_RXINFO_LEN]; + uint8_t seq_num_v[HDCP_2_2_SEQ_NUM_LEN]; + uint8_t v_prime[HDCP_2_2_LPRIME_HALF_LEN]; + uint8_t receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN]; +} __packed; + +struct hdcp2_rep_send_ack { + uint8_t msg_id; + uint8_t v[HDCP_2_2_LPRIME_HALF_LEN]; +} __packed; + +struct hdcp2_rep_stream_manage { + uint8_t msg_id; + uint8_t seq_num_m[HDCP_2_2_SEQ_NUM_LEN]; + __be16 k; + struct hdcp2_streamid_type streams[HDCP_2_2_MAX_CONTENT_STREAMS_CNT]; +} __packed; + +struct hdcp2_rep_stream_ready { + uint8_t msg_id; + uint8_t m_prime[HDCP_2_2_MPRIME_LEN]; +} __packed; + +struct hdcp2_dp_errata_stream_type { + uint8_t msg_id; + uint8_t stream_type; +} __packed; + #endif