>-----Original Message----- >From: dri-devel [mailto:dri-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of >Ramalingam C >Sent: Saturday, July 14, 2018 8:45 AM >To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; >daniel@xxxxxxxx; seanpaul@xxxxxxxxxxxx; Winkler, Tomas ><tomas.winkler@xxxxxxxxx>; Usyskin, Alexander <alexander.usyskin@xxxxxxxxx>; >Shankar, Uma <uma.shankar@xxxxxxxxx> >Subject: [PATCH v6 01/35] drm: hdcp2.2 authentication msg definitions > >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] >v5: > Fix for macros. >v6: > comment for Type is improved [Sean Paul] > >Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> >--- > include/drm/drm_hdcp.h | 184 >+++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 184 insertions(+) > >diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index >98e63d870139..a2a4a159fcde 100644 >--- a/include/drm/drm_hdcp.h >+++ b/include/drm/drm_hdcp.h >@@ -38,4 +38,188 @@ > #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 */ >+/* >+ * Protected content streams are classified into 2 types: >+ * - Type0: Can be transmitted with HDCP 1.4+ >+ * - Type1: Can be transmitted with HDCP 2.2+ */ >+#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]; Seems like extra tabs here, Fixed that universally across all structure definitions. >+} __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]; Why not call it as Vprime itself instead of lprime_half to match the spec naming ? With the above 2 comments fixed, Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx> >+ 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 >-- >2.7.4 > >_______________________________________________ >dri-devel mailing list >dri-devel@xxxxxxxxxxxxxxxxxxxxx >https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
