| Message ID | 1522763873-23041-2-git-send-email-ramalingam.c@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
>-----Original Message----- >From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of >Ramalingam C >Sent: Tuesday, April 3, 2018 7:27 PM >To: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; >seanpaul@chromium.org; daniel@ffwll.ch; chris@chris-wilson.co.uk; >jani.nikula@linux.intel.com; Winkler, Tomas <tomas.winkler@intel.com>; >Usyskin, Alexander <alexander.usyskin@intel.com> >Cc: Vivi, Rodrigo <rodrigo.vivi@intel.com> >Subject: [Intel-gfx] [PATCH v3 01/40] drm: hdcp2.2 authentication msg definitions > >This patch defines the hdcp2.2 protocol messages for the Drop redundant "the" and one of the hdcp2.2. Not required. >HDCP2.2 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. > >Signed-off-by: Ramalingam C <ramalingam.c@intel.com> >--- > include/drm/drm_hdcp.h | 183 >+++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 183 insertions(+) > >diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index >562fa7df2637..5e0a5ed1a08e 100644 >--- a/include/drm/drm_hdcp.h >+++ b/include/drm/drm_hdcp.h >@@ -38,4 +38,187 @@ > #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 */ Multi Line comment style not needed here. >+ >+#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_PARING_INFO 8 Typo in Pairing >+#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 >+ >+/** Remove an extra "*". >+ * 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)) As per 2.2 spec this is a 5 bit field and no mention of HI and LO is there for dev count. A comment explaining why this masking style is chosen will be helpful since it doesn't match exactly with spec. >+#define HDCP_2_2_DEPTH(x) ((x & (0x7 << 1)) >> 1) Same here, may be add a generic comment explaining the logic for all the relevant macro definitions. >+ >+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; >+ >+/** Drop the extra "*". >+ * 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]; Drop extra tabs here. >+} __packed; >+ >+/* >+ * Main structures for HDCP2.2 protocol communication */ struct No need of multi-line comment style. >+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]; Drop extra tabs. Do it universally in all structure definitions. >+} __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 >-- >2.7.4 > >_______________________________________________ >Intel-gfx mailing list >Intel-gfx@lists.freedesktop.org >https://lists.freedesktop.org/mailman/listinfo/intel-gfx
Thank you for the review comments Uma Shankar! On Wednesday 09 May 2018 03:31 PM, Shankar, Uma wrote: > >> -----Original Message----- >> From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of >> Ramalingam C >> Sent: Tuesday, April 3, 2018 7:27 PM >> To: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; >> seanpaul@chromium.org; daniel@ffwll.ch; chris@chris-wilson.co.uk; >> jani.nikula@linux.intel.com; Winkler, Tomas <tomas.winkler@intel.com>; >> Usyskin, Alexander <alexander.usyskin@intel.com> >> Cc: Vivi, Rodrigo <rodrigo.vivi@intel.com> >> Subject: [Intel-gfx] [PATCH v3 01/40] drm: hdcp2.2 authentication msg definitions >> >> This patch defines the hdcp2.2 protocol messages for the > Drop redundant "the" and one of the hdcp2.2. Not required. ok > >> HDCP2.2 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. >> >> Signed-off-by: Ramalingam C <ramalingam.c@intel.com> >> --- >> include/drm/drm_hdcp.h | 183 >> +++++++++++++++++++++++++++++++++++++++++++++++++ >> 1 file changed, 183 insertions(+) >> >> diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index >> 562fa7df2637..5e0a5ed1a08e 100644 >> --- a/include/drm/drm_hdcp.h >> +++ b/include/drm/drm_hdcp.h >> @@ -38,4 +38,187 @@ >> #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 */ > Multi Line comment style not needed here. Ok > >> + >> +#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_PARING_INFO 8 > Typo in Pairing Fixed > >> +#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 >> + >> +/** > Remove an extra "*". > >> + * 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)) > As per 2.2 spec this is a 5 bit field and no mention of HI and LO is there for dev count. > A comment explaining why this masking style is chosen will be helpful since it doesn't > match exactly with spec. dev count is spread across multi byte value. And these macros are processing the each byte separately. Agreed that a comment would help here. > >> +#define HDCP_2_2_DEPTH(x) ((x & (0x7 << 1)) >> 1) > Same here, may be add a generic comment explaining the logic for > all the relevant macro definitions. >> + >> +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; >> + >> +/** > Drop the extra "*". Fixed. > >> + * 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]; > Drop extra tabs here. Keeping the extra tabs for the uniformity. If it is ok, I would like to keep it as it is now. > >> +} __packed; >> + >> +/* >> + * Main structures for HDCP2.2 protocol communication */ struct > No need of multi-line comment style. > >> +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]; > Drop extra tabs. Do it universally in all structure definitions. > >> +} __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 >> -- >> 2.7.4 >> >> _______________________________________________ >> Intel-gfx mailing list >> Intel-gfx@lists.freedesktop.org >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index 562fa7df2637..5e0a5ed1a08e 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -38,4 +38,187 @@ #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_PARING_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 + +/** + * 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
This patch defines the hdcp2.2 protocol messages for the HDCP2.2 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. Signed-off-by: Ramalingam C <ramalingam.c@intel.com> --- include/drm/drm_hdcp.h | 183 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 183 insertions(+)