diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp_gsc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 772 |
1 files changed, 90 insertions, 682 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c index 7e52aea6aa17..3e7b480ee9f1 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c @@ -3,656 +3,80 @@ * Copyright 2023, Intel Corporation. */ -#include <drm/i915_hdcp_interface.h> +#include <drm/drm_print.h> +#include <drm/intel/i915_hdcp_interface.h> -#include "display/intel_hdcp_gsc.h" #include "gem/i915_gem_region.h" +#include "gt/intel_gt.h" #include "gt/uc/intel_gsc_uc_heci_cmd_submit.h" #include "i915_drv.h" -#include "i915_utils.h" +#include "intel_hdcp_gsc.h" -bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915) -{ - return DISPLAY_VER(i915) >= 14; -} - -static int -gsc_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data, - struct hdcp2_ake_init *ake_data) -{ - struct wired_cmd_initiate_hdcp2_session_in session_init_in = { { 0 } }; - struct wired_cmd_initiate_hdcp2_session_out - session_init_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !ake_data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - session_init_in.header.api_version = HDCP_API_VERSION; - session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION; - session_init_in.header.status = FW_HDCP_STATUS_SUCCESS; - session_init_in.header.buffer_len = - WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN; - - session_init_in.port.integrated_port_type = data->port_type; - session_init_in.port.physical_port = (u8)data->hdcp_ddi; - session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - session_init_in.protocol = data->protocol; - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_init_in, - sizeof(session_init_in), - (u8 *)&session_init_out, - sizeof(session_init_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (session_init_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n", - WIRED_INITIATE_HDCP2_SESSION, - session_init_out.header.status); - return -EIO; - } - - ake_data->msg_id = HDCP_2_2_AKE_INIT; - ake_data->tx_caps = session_init_out.tx_caps; - memcpy(ake_data->r_tx, session_init_out.r_tx, HDCP_2_2_RTX_LEN); - - return 0; -} - -static int -gsc_hdcp_verify_receiver_cert_prepare_km(struct device *dev, - struct hdcp_port_data *data, - struct hdcp2_ake_send_cert *rx_cert, - bool *km_stored, - struct hdcp2_ake_no_stored_km - *ek_pub_km, - size_t *msg_sz) -{ - struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = { { 0 } }; - struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - verify_rxcert_in.header.api_version = HDCP_API_VERSION; - verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT; - verify_rxcert_in.header.status = FW_HDCP_STATUS_SUCCESS; - verify_rxcert_in.header.buffer_len = - WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN; - - verify_rxcert_in.port.integrated_port_type = data->port_type; - verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi; - verify_rxcert_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - verify_rxcert_in.cert_rx = rx_cert->cert_rx; - memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN); - memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_rxcert_in, - sizeof(verify_rxcert_in), - (u8 *)&verify_rxcert_out, - sizeof(verify_rxcert_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed: %zd\n", byte); - return byte; - } - - if (verify_rxcert_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n", - WIRED_VERIFY_RECEIVER_CERT, - verify_rxcert_out.header.status); - return -EIO; - } - - *km_stored = !!verify_rxcert_out.km_stored; - if (verify_rxcert_out.km_stored) { - ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM; - *msg_sz = sizeof(struct hdcp2_ake_stored_km); - } else { - ek_pub_km->msg_id = HDCP_2_2_AKE_NO_STORED_KM; - *msg_sz = sizeof(struct hdcp2_ake_no_stored_km); - } - - memcpy(ek_pub_km->e_kpub_km, &verify_rxcert_out.ekm_buff, - sizeof(verify_rxcert_out.ekm_buff)); - - return 0; -} - -static int -gsc_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data, - struct hdcp2_ake_send_hprime *rx_hprime) -{ - struct wired_cmd_ake_send_hprime_in send_hprime_in = { { 0 } }; - struct wired_cmd_ake_send_hprime_out send_hprime_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !rx_hprime) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - send_hprime_in.header.api_version = HDCP_API_VERSION; - send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME; - send_hprime_in.header.status = FW_HDCP_STATUS_SUCCESS; - send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN; - - send_hprime_in.port.integrated_port_type = data->port_type; - send_hprime_in.port.physical_port = (u8)data->hdcp_ddi; - send_hprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - memcpy(send_hprime_in.h_prime, rx_hprime->h_prime, - HDCP_2_2_H_PRIME_LEN); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&send_hprime_in, - sizeof(send_hprime_in), - (u8 *)&send_hprime_out, - sizeof(send_hprime_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (send_hprime_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n", - WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status); - return -EIO; - } - - return 0; -} - -static int -gsc_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data, - struct hdcp2_ake_send_pairing_info *pairing_info) -{ - struct wired_cmd_ake_send_pairing_info_in pairing_info_in = { { 0 } }; - struct wired_cmd_ake_send_pairing_info_out pairing_info_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !pairing_info) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - pairing_info_in.header.api_version = HDCP_API_VERSION; - pairing_info_in.header.command_id = WIRED_AKE_SEND_PAIRING_INFO; - pairing_info_in.header.status = FW_HDCP_STATUS_SUCCESS; - pairing_info_in.header.buffer_len = - WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN; - - pairing_info_in.port.integrated_port_type = data->port_type; - pairing_info_in.port.physical_port = (u8)data->hdcp_ddi; - pairing_info_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km, - HDCP_2_2_E_KH_KM_LEN); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&pairing_info_in, - sizeof(pairing_info_in), - (u8 *)&pairing_info_out, - sizeof(pairing_info_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (pairing_info_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. Status: 0x%X\n", - WIRED_AKE_SEND_PAIRING_INFO, - pairing_info_out.header.status); - return -EIO; - } - - return 0; -} - -static int -gsc_hdcp_initiate_locality_check(struct device *dev, - struct hdcp_port_data *data, - struct hdcp2_lc_init *lc_init_data) -{ - struct wired_cmd_init_locality_check_in lc_init_in = { { 0 } }; - struct wired_cmd_init_locality_check_out lc_init_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !lc_init_data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - lc_init_in.header.api_version = HDCP_API_VERSION; - lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK; - lc_init_in.header.status = FW_HDCP_STATUS_SUCCESS; - lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN; - - lc_init_in.port.integrated_port_type = data->port_type; - lc_init_in.port.physical_port = (u8)data->hdcp_ddi; - lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&lc_init_in, sizeof(lc_init_in), - (u8 *)&lc_init_out, sizeof(lc_init_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (lc_init_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. status: 0x%X\n", - WIRED_INIT_LOCALITY_CHECK, lc_init_out.header.status); - return -EIO; - } - - lc_init_data->msg_id = HDCP_2_2_LC_INIT; - memcpy(lc_init_data->r_n, lc_init_out.r_n, HDCP_2_2_RN_LEN); - - return 0; -} - -static int -gsc_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data, - struct hdcp2_lc_send_lprime *rx_lprime) -{ - struct wired_cmd_validate_locality_in verify_lprime_in = { { 0 } }; - struct wired_cmd_validate_locality_out verify_lprime_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !rx_lprime) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - verify_lprime_in.header.api_version = HDCP_API_VERSION; - verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY; - verify_lprime_in.header.status = FW_HDCP_STATUS_SUCCESS; - verify_lprime_in.header.buffer_len = - WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN; - - verify_lprime_in.port.integrated_port_type = data->port_type; - verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi; - verify_lprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime, - HDCP_2_2_L_PRIME_LEN); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_lprime_in, - sizeof(verify_lprime_in), - (u8 *)&verify_lprime_out, - sizeof(verify_lprime_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (verify_lprime_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n", - WIRED_VALIDATE_LOCALITY, - verify_lprime_out.header.status); - return -EIO; - } - - return 0; -} - -static int gsc_hdcp_get_session_key(struct device *dev, - struct hdcp_port_data *data, - struct hdcp2_ske_send_eks *ske_data) -{ - struct wired_cmd_get_session_key_in get_skey_in = { { 0 } }; - struct wired_cmd_get_session_key_out get_skey_out = { { 0 } }; +struct intel_hdcp_gsc_context { struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data || !ske_data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - get_skey_in.header.api_version = HDCP_API_VERSION; - get_skey_in.header.command_id = WIRED_GET_SESSION_KEY; - get_skey_in.header.status = FW_HDCP_STATUS_SUCCESS; - get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN; - - get_skey_in.port.integrated_port_type = data->port_type; - get_skey_in.port.physical_port = (u8)data->hdcp_ddi; - get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&get_skey_in, sizeof(get_skey_in), - (u8 *)&get_skey_out, sizeof(get_skey_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (get_skey_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n", - WIRED_GET_SESSION_KEY, get_skey_out.header.status); - return -EIO; - } - - ske_data->msg_id = HDCP_2_2_SKE_SEND_EKS; - memcpy(ske_data->e_dkey_ks, get_skey_out.e_dkey_ks, - HDCP_2_2_E_DKEY_KS_LEN); - memcpy(ske_data->riv, get_skey_out.r_iv, HDCP_2_2_RIV_LEN); - - return 0; -} - -static int -gsc_hdcp_repeater_check_flow_prepare_ack(struct device *dev, - struct hdcp_port_data *data, - struct hdcp2_rep_send_receiverid_list - *rep_topology, - struct hdcp2_rep_send_ack - *rep_send_ack) -{ - struct wired_cmd_verify_repeater_in verify_repeater_in = { { 0 } }; - struct wired_cmd_verify_repeater_out verify_repeater_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !rep_topology || !rep_send_ack || !data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - verify_repeater_in.header.api_version = HDCP_API_VERSION; - verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER; - verify_repeater_in.header.status = FW_HDCP_STATUS_SUCCESS; - verify_repeater_in.header.buffer_len = - WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN; - - verify_repeater_in.port.integrated_port_type = data->port_type; - verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi; - verify_repeater_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - memcpy(verify_repeater_in.rx_info, rep_topology->rx_info, - HDCP_2_2_RXINFO_LEN); - memcpy(verify_repeater_in.seq_num_v, rep_topology->seq_num_v, - HDCP_2_2_SEQ_NUM_LEN); - memcpy(verify_repeater_in.v_prime, rep_topology->v_prime, - HDCP_2_2_V_PRIME_HALF_LEN); - memcpy(verify_repeater_in.receiver_ids, rep_topology->receiver_ids, - HDCP_2_2_RECEIVER_IDS_MAX_LEN); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_repeater_in, - sizeof(verify_repeater_in), - (u8 *)&verify_repeater_out, - sizeof(verify_repeater_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (verify_repeater_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n", - WIRED_VERIFY_REPEATER, - verify_repeater_out.header.status); - return -EIO; - } - - memcpy(rep_send_ack->v, verify_repeater_out.v, - HDCP_2_2_V_PRIME_HALF_LEN); - rep_send_ack->msg_id = HDCP_2_2_REP_SEND_ACK; - - return 0; -} - -static int gsc_hdcp_verify_mprime(struct device *dev, - struct hdcp_port_data *data, - struct hdcp2_rep_stream_ready *stream_ready) -{ - struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in; - struct wired_cmd_repeater_auth_stream_req_out - verify_mprime_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - size_t cmd_size; - - if (!dev || !stream_ready || !data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - cmd_size = struct_size(verify_mprime_in, streams, data->k); - if (cmd_size == SIZE_MAX) - return -EINVAL; - - verify_mprime_in = kzalloc(cmd_size, GFP_KERNEL); - if (!verify_mprime_in) - return -ENOMEM; - - verify_mprime_in->header.api_version = HDCP_API_VERSION; - verify_mprime_in->header.command_id = WIRED_REPEATER_AUTH_STREAM_REQ; - verify_mprime_in->header.status = FW_HDCP_STATUS_SUCCESS; - verify_mprime_in->header.buffer_len = cmd_size - sizeof(verify_mprime_in->header); - - verify_mprime_in->port.integrated_port_type = data->port_type; - verify_mprime_in->port.physical_port = (u8)data->hdcp_ddi; - verify_mprime_in->port.attached_transcoder = (u8)data->hdcp_transcoder; - - memcpy(verify_mprime_in->m_prime, stream_ready->m_prime, HDCP_2_2_MPRIME_LEN); - drm_hdcp_cpu_to_be24(verify_mprime_in->seq_num_m, data->seq_num_m); - - memcpy(verify_mprime_in->streams, data->streams, - array_size(data->k, sizeof(*data->streams))); - - verify_mprime_in->k = cpu_to_be16(data->k); - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)verify_mprime_in, cmd_size, - (u8 *)&verify_mprime_out, - sizeof(verify_mprime_out)); - kfree(verify_mprime_in); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (verify_mprime_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n", - WIRED_REPEATER_AUTH_STREAM_REQ, - verify_mprime_out.header.status); - return -EIO; - } - - return 0; -} - -static int gsc_hdcp_enable_authentication(struct device *dev, - struct hdcp_port_data *data) -{ - struct wired_cmd_enable_auth_in enable_auth_in = { { 0 } }; - struct wired_cmd_enable_auth_out enable_auth_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - enable_auth_in.header.api_version = HDCP_API_VERSION; - enable_auth_in.header.command_id = WIRED_ENABLE_AUTH; - enable_auth_in.header.status = FW_HDCP_STATUS_SUCCESS; - enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN; - - enable_auth_in.port.integrated_port_type = data->port_type; - enable_auth_in.port.physical_port = (u8)data->hdcp_ddi; - enable_auth_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - enable_auth_in.stream_type = data->streams[0].stream_type; - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&enable_auth_in, - sizeof(enable_auth_in), - (u8 *)&enable_auth_out, - sizeof(enable_auth_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } - - if (enable_auth_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n", - WIRED_ENABLE_AUTH, enable_auth_out.header.status); - return -EIO; - } - - return 0; -} + struct i915_vma *vma; + void *hdcp_cmd_in; + void *hdcp_cmd_out; +}; -static int -gsc_hdcp_close_session(struct device *dev, struct hdcp_port_data *data) +bool intel_hdcp_gsc_check_status(struct drm_device *drm) { - struct wired_cmd_close_session_in session_close_in = { { 0 } }; - struct wired_cmd_close_session_out session_close_out = { { 0 } }; - struct drm_i915_private *i915; - ssize_t byte; - - if (!dev || !data) - return -EINVAL; - - i915 = kdev_to_i915(dev); - if (!i915) { - dev_err(dev, "DRM not initialized, aborting HDCP.\n"); - return -ENODEV; - } - - session_close_in.header.api_version = HDCP_API_VERSION; - session_close_in.header.command_id = WIRED_CLOSE_SESSION; - session_close_in.header.status = FW_HDCP_STATUS_SUCCESS; - session_close_in.header.buffer_len = - WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN; - - session_close_in.port.integrated_port_type = data->port_type; - session_close_in.port.physical_port = (u8)data->hdcp_ddi; - session_close_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_close_in, - sizeof(session_close_in), - (u8 *)&session_close_out, - sizeof(session_close_out)); - if (byte < 0) { - drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); - return byte; - } + struct drm_i915_private *i915 = to_i915(drm); + struct intel_gt *gt = i915->media_gt; + struct intel_gsc_uc *gsc = gt ? >->uc.gsc : NULL; - if (session_close_out.header.status != FW_HDCP_STATUS_SUCCESS) { - drm_dbg_kms(&i915->drm, "Session Close Failed. status: 0x%X\n", - session_close_out.header.status); - return -EIO; + if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) { + drm_dbg_kms(&i915->drm, + "GSC components required for HDCP2.2 are not ready\n"); + return false; } - return 0; + return true; } -static const struct i915_hdcp_ops gsc_hdcp_ops = { - .initiate_hdcp2_session = gsc_hdcp_initiate_session, - .verify_receiver_cert_prepare_km = - gsc_hdcp_verify_receiver_cert_prepare_km, - .verify_hprime = gsc_hdcp_verify_hprime, - .store_pairing_info = gsc_hdcp_store_pairing_info, - .initiate_locality_check = gsc_hdcp_initiate_locality_check, - .verify_lprime = gsc_hdcp_verify_lprime, - .get_session_key = gsc_hdcp_get_session_key, - .repeater_check_flow_prepare_ack = - gsc_hdcp_repeater_check_flow_prepare_ack, - .verify_mprime = gsc_hdcp_verify_mprime, - .enable_hdcp_authentication = gsc_hdcp_enable_authentication, - .close_hdcp_session = gsc_hdcp_close_session, -}; - /*This function helps allocate memory for the command that we will send to gsc cs */ static int intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915, - struct intel_hdcp_gsc_message *hdcp_message) + struct intel_hdcp_gsc_context *gsc_context) { struct intel_gt *gt = i915->media_gt; struct drm_i915_gem_object *obj = NULL; struct i915_vma *vma = NULL; - void *cmd; + void *cmd_in, *cmd_out; int err; - /* allocate object of one page for HDCP command memory and store it */ - obj = i915_gem_object_create_shmem(i915, PAGE_SIZE); + /* allocate object of two page for HDCP command memory and store it */ + obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE); if (IS_ERR(obj)) { drm_err(&i915->drm, "Failed to allocate HDCP streaming command!\n"); return PTR_ERR(obj); } - cmd = i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(i915, obj, true)); - if (IS_ERR(cmd)) { + cmd_in = i915_gem_object_pin_map_unlocked(obj, intel_gt_coherent_map_type(gt, obj, true)); + if (IS_ERR(cmd_in)) { drm_err(&i915->drm, "Failed to map gsc message page!\n"); - err = PTR_ERR(cmd); + err = PTR_ERR(cmd_in); goto out_unpin; } + cmd_out = cmd_in + PAGE_SIZE; + vma = i915_vma_instance(obj, >->ggtt->vm, NULL); if (IS_ERR(vma)) { err = PTR_ERR(vma); goto out_unmap; } - err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL); + err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH); if (err) goto out_unmap; - memset(cmd, 0, obj->base.size); + memset(cmd_in, 0, obj->base.size); - hdcp_message->hdcp_cmd = cmd; - hdcp_message->vma = vma; + gsc_context->hdcp_cmd_in = cmd_in; + gsc_context->hdcp_cmd_out = cmd_out; + gsc_context->vma = vma; + gsc_context->i915 = i915; return 0; @@ -663,96 +87,76 @@ out_unpin: return err; } -static int intel_hdcp_gsc_hdcp2_init(struct drm_i915_private *i915) +struct intel_hdcp_gsc_context *intel_hdcp_gsc_context_alloc(struct drm_device *drm) { - struct intel_hdcp_gsc_message *hdcp_message; + struct drm_i915_private *i915 = to_i915(drm); + struct intel_hdcp_gsc_context *gsc_context; int ret; - hdcp_message = kzalloc(sizeof(*hdcp_message), GFP_KERNEL); - - if (!hdcp_message) - return -ENOMEM; + gsc_context = kzalloc(sizeof(*gsc_context), GFP_KERNEL); + if (!gsc_context) + return ERR_PTR(-ENOMEM); /* * NOTE: No need to lock the comp mutex here as it is already * going to be taken before this function called */ - i915->display.hdcp.hdcp_message = hdcp_message; - ret = intel_hdcp_gsc_initialize_message(i915, hdcp_message); - - if (ret) - drm_err(&i915->drm, "Could not initialize hdcp_message\n"); - - return ret; -} - -static void intel_hdcp_gsc_free_message(struct drm_i915_private *i915) -{ - struct intel_hdcp_gsc_message *hdcp_message = - i915->display.hdcp.hdcp_message; + ret = intel_hdcp_gsc_initialize_message(i915, gsc_context); + if (ret) { + drm_err(&i915->drm, "Could not initialize gsc_context\n"); + kfree(gsc_context); + gsc_context = ERR_PTR(ret); + } - i915_vma_unpin_and_release(&hdcp_message->vma, I915_VMA_RELEASE_MAP); - kfree(hdcp_message); + return gsc_context; } -int intel_hdcp_gsc_init(struct drm_i915_private *i915) +void intel_hdcp_gsc_context_free(struct intel_hdcp_gsc_context *gsc_context) { - struct i915_hdcp_master *data; - int ret; - - data = kzalloc(sizeof(struct i915_hdcp_master), GFP_KERNEL); - if (!data) - return -ENOMEM; + if (!gsc_context) + return; - mutex_lock(&i915->display.hdcp.comp_mutex); - i915->display.hdcp.master = data; - i915->display.hdcp.master->hdcp_dev = i915->drm.dev; - i915->display.hdcp.master->ops = &gsc_hdcp_ops; - ret = intel_hdcp_gsc_hdcp2_init(i915); - mutex_unlock(&i915->display.hdcp.comp_mutex); - - return ret; -} - -void intel_hdcp_gsc_fini(struct drm_i915_private *i915) -{ - intel_hdcp_gsc_free_message(i915); - kfree(i915->display.hdcp.master); + i915_vma_unpin_and_release(&gsc_context->vma, I915_VMA_RELEASE_MAP); + kfree(gsc_context); } static int intel_gsc_send_sync(struct drm_i915_private *i915, - struct intel_gsc_mtl_header *header, u64 addr, + struct intel_gsc_mtl_header *header_in, + struct intel_gsc_mtl_header *header_out, + u64 addr_in, u64 addr_out, size_t msg_out_len) { struct intel_gt *gt = i915->media_gt; int ret; - header->flags = 0; - ret = intel_gsc_uc_heci_cmd_submit_packet(>->uc.gsc, addr, - header->message_size, - addr, - msg_out_len + sizeof(*header)); + ret = intel_gsc_uc_heci_cmd_submit_packet(>->uc.gsc, addr_in, + header_in->message_size, + addr_out, + msg_out_len + sizeof(*header_out)); if (ret) { drm_err(&i915->drm, "failed to send gsc HDCP msg (%d)\n", ret); return ret; } /* - * Checking validity marker for memory sanity + * Checking validity marker and header status to see if some error has + * blocked us from sending message to gsc cs */ - if (header->validity_marker != GSC_HECI_VALIDITY_MARKER) { + if (header_out->validity_marker != GSC_HECI_VALIDITY_MARKER) { drm_err(&i915->drm, "invalid validity marker\n"); return -EINVAL; } - if (header->status != 0) { + if (header_out->status != 0) { drm_err(&i915->drm, "header status indicates error %d\n", - header->status); + header_out->status); return -EINVAL; } - if (header->flags & GSC_OUTFLAG_MSG_PENDING) + if (header_out->flags & GSC_OUTFLAG_MSG_PENDING) { + header_in->gsc_message_handle = header_out->gsc_message_handle; return -EAGAIN; + } return 0; } @@ -760,20 +164,20 @@ static int intel_gsc_send_sync(struct drm_i915_private *i915, /* * This function can now be used for sending requests and will also handle * receipt of reply messages hence no different function of message retrieval - * is required. We will initialize intel_hdcp_gsc_message structure then add + * is required. We will initialize intel_hdcp_gsc_context structure then add * gsc cs memory header as stated in specs after which the normal HDCP payload * will follow */ -ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, - size_t msg_in_len, u8 *msg_out, - size_t msg_out_len) +ssize_t intel_hdcp_gsc_msg_send(struct intel_hdcp_gsc_context *gsc_context, + void *msg_in, size_t msg_in_len, + void *msg_out, size_t msg_out_len) { + struct drm_i915_private *i915 = gsc_context->i915; struct intel_gt *gt = i915->media_gt; - struct intel_gsc_mtl_header *header; - const size_t max_msg_size = PAGE_SIZE - sizeof(*header); - struct intel_hdcp_gsc_message *hdcp_message; - u64 addr, host_session_id; - u32 reply_size, msg_size; + struct intel_gsc_mtl_header *header_in, *header_out; + const size_t max_msg_size = PAGE_SIZE - sizeof(*header_in); + u64 addr_in, addr_out, host_session_id; + u32 reply_size, msg_size_in, msg_size_out; int ret, tries = 0; if (!intel_uc_uses_gsc_uc(>->uc)) @@ -782,16 +186,19 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, if (msg_in_len > max_msg_size || msg_out_len > max_msg_size) return -ENOSPC; - hdcp_message = i915->display.hdcp.hdcp_message; - header = hdcp_message->hdcp_cmd; - addr = i915_ggtt_offset(hdcp_message->vma); + msg_size_in = msg_in_len + sizeof(*header_in); + msg_size_out = msg_out_len + sizeof(*header_out); + header_in = gsc_context->hdcp_cmd_in; + header_out = gsc_context->hdcp_cmd_out; + addr_in = i915_ggtt_offset(gsc_context->vma); + addr_out = addr_in + PAGE_SIZE; - msg_size = msg_in_len + sizeof(*header); - memset(header, 0, msg_size); + memset(header_in, 0, msg_size_in); + memset(header_out, 0, msg_size_out); get_random_bytes(&host_session_id, sizeof(u64)); - intel_gsc_uc_heci_cmd_emit_mtl_header(header, HECI_MEADDRESS_HDCP, - msg_size, host_session_id); - memcpy(hdcp_message->hdcp_cmd + sizeof(*header), msg_in, msg_in_len); + intel_gsc_uc_heci_cmd_emit_mtl_header(header_in, HECI_MEADDRESS_HDCP, + msg_size_in, host_session_id); + memcpy(gsc_context->hdcp_cmd_in + sizeof(*header_in), msg_in, msg_in_len); /* * Keep sending request in case the pending bit is set no need to add @@ -800,7 +207,8 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, * 20 times each message 50 ms apart */ do { - ret = intel_gsc_send_sync(i915, header, addr, msg_out_len); + ret = intel_gsc_send_sync(i915, header_in, header_out, addr_in, + addr_out, msg_out_len); /* Only try again if gsc says so */ if (ret != -EAGAIN) @@ -814,7 +222,7 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, goto err; /* we use the same mem for the reply, so header is in the same loc */ - reply_size = header->message_size - sizeof(*header); + reply_size = header_out->message_size - sizeof(*header_out); if (reply_size > msg_out_len) { drm_warn(&i915->drm, "caller with insufficient HDCP reply size %u (%d)\n", reply_size, (u32)msg_out_len); @@ -824,7 +232,7 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, reply_size, (u32)msg_out_len); } - memcpy(msg_out, hdcp_message->hdcp_cmd + sizeof(*header), msg_out_len); + memcpy(msg_out, gsc_context->hdcp_cmd_out + sizeof(*header_out), msg_out_len); err: return ret; |