[Intel-gfx] [PATCH v5 5/7] drm/i915/hdcp: Fill wired_cmd_in structures at a single place
Rodrigo Vivi
rodrigo.vivi at intel.com
Wed Jan 4 11:25:07 UTC 2023
On Wed, Jan 04, 2023 at 10:14:54AM +0000, Tvrtko Ursulin wrote:
>
> On 04/01/2023 09:53, Jani Nikula wrote:
> > On Mon, 02 Jan 2023, Suraj Kandpal <suraj.kandpal at intel.com> wrote:
> > > Need to fill wired cmd in structures at a single place as they remain
> > > same for both gsc and mei.
> >
> > I'm still opposed to adding this stuff to i915 and exporting the
> > symbols. Seems like it should be a separate component, because this is
> > not about i915.
> >
> > Cc: other maintainers, please chime in.
> >
> > > --v3
> > > -remove inline function from header [Jani]
> > >
> > > Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> > > Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> > > ---
> > > drivers/gpu/drm/i915/Makefile | 1 +
> > > drivers/gpu/drm/i915/i915_hdcp_interface.c | 216 +++++++++++++++++++++
> > > drivers/misc/mei/hdcp/mei_hdcp.c | 153 ++-------------
> > > include/drm/i915_hdcp_interface.h | 39 ++++
> > > 4 files changed, 270 insertions(+), 139 deletions(-)
> > > create mode 100644 drivers/gpu/drm/i915/i915_hdcp_interface.c
> > >
> > > diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> > > index 461d6b40656d..c6a9826af58d 100644
> > > --- a/drivers/gpu/drm/i915/Makefile
> > > +++ b/drivers/gpu/drm/i915/Makefile
> > > @@ -36,6 +36,7 @@ i915-y += i915_driver.o \
> > > i915_drm_client.o \
> > > i915_config.o \
> > > i915_getparam.o \
> > > + i915_hdcp_interface.o\
> > > i915_ioctl.o \
> > > i915_irq.o \
> > > i915_mitigations.o \
> > > diff --git a/drivers/gpu/drm/i915/i915_hdcp_interface.c b/drivers/gpu/drm/i915/i915_hdcp_interface.c
> > > new file mode 100644
> > > index 000000000000..e6b787c2fa50
> > > --- /dev/null
> > > +++ b/drivers/gpu/drm/i915/i915_hdcp_interface.c
> > > @@ -0,0 +1,216 @@
> > > +// SPDX-License-Identifier: MIT
> > > +/*
> > > + * Copyright 2022, Intel Corporation.
> > > + */
> > > +
> > > +#include <drm/i915_hdcp_interface.h>
> > > +
> > > +void
> > > +i915_hdcp_fill_session_in(struct wired_cmd_initiate_hdcp2_session_in *session_init_in,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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;
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_session_in);
>
> I am not familiar enough with the problem space but this kind of trivial
> exported symbols definitely do not look like the best choice.
>
> Presumably there are two kernel modules dealing with this HDCP protocol in
> which case would creating a kernel module like intel_hdcp, which would
> establish the protocol definitions and API to use it. I915 and any other
> module would then depend on that module and use it.
>
> Presumably this is what Jani meant actually and that sounds like the exactly
> right direction to me. I just don't know enough about the scope of the
> protocol to propose anything more specific.
I'm also in favor of the separated module here. Eventually we will have to
use it in the new Xe driver as well.
>
> Regards,
>
> Tvrtko
>
> > > +
> > > +void
> > > +i915_hdcp_fill_rxcert_in(struct wired_cmd_verify_receiver_cert_in *verify_rxcert_in,
> > > + struct hdcp2_ake_send_cert *rx_cert,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_rxcert_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_hprime_in(struct wired_cmd_ake_send_hprime_in *send_hprime_in,
> > > + struct hdcp2_ake_send_hprime *rx_hprime,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_hprime_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_pairing_info_in(struct wired_cmd_ake_send_pairing_info_in *pairing_info_in,
> > > + struct hdcp2_ake_send_pairing_info *pairing_info,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_pairing_info_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_locality_check_in(struct wired_cmd_init_locality_check_in *lc_init_in,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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;
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_locality_check_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_validate_locality_in(struct wired_cmd_validate_locality_in *verify_lprime_in,
> > > + struct hdcp2_lc_send_lprime *rx_lprime,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_validate_locality_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_session_key_in(struct wired_cmd_get_session_key_in *get_skey_in,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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;
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_session_key_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_repeater_in(struct wired_cmd_verify_repeater_in *verify_repeater_in,
> > > + struct hdcp2_rep_send_receiverid_list *rep_topology,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_repeater_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_auth_stream_req_in(struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in,
> > > + struct hdcp2_rep_stream_ready *stream_ready, ssize_t cmd_size,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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);
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_auth_stream_req_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_enable_auth_in(struct wired_cmd_enable_auth_in *enable_auth_in,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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;
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_enable_auth_in);
> > > +
> > > +void
> > > +i915_hdcp_fill_close_session_in(struct wired_cmd_close_session_in *session_close_in,
> > > + struct hdcp_port_data *data)
> > > +{
> > > + 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;
> > > +}
> > > +EXPORT_SYMBOL(i915_hdcp_fill_close_session_in);
> > > +
> > > diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
> > > index d4faecbbbe76..2cf42e98dfae 100644
> > > --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> > > +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> > > @@ -50,17 +50,7 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
> > > cldev = to_mei_cl_device(dev);
> > > - 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;
> > > -
> > > + i915_hdcp_fill_session_in(&session_init_in, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
> > > sizeof(session_init_in));
> > > if (byte < 0) {
> > > @@ -119,21 +109,7 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
> > > return -EINVAL;
> > > cldev = to_mei_cl_device(dev);
> > > -
> > > - 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);
> > > -
> > > + i915_hdcp_fill_rxcert_in(&verify_rxcert_in, rx_cert, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&verify_rxcert_in,
> > > sizeof(verify_rxcert_in));
> > > if (byte < 0) {
> > > @@ -192,18 +168,7 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
> > > cldev = to_mei_cl_device(dev);
> > > - 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);
> > > -
> > > + i915_hdcp_fill_hprime_in(&send_hprime_in, rx_hprime, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&send_hprime_in,
> > > sizeof(send_hprime_in));
> > > if (byte < 0) {
> > > @@ -248,20 +213,8 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
> > > return -EINVAL;
> > > cldev = to_mei_cl_device(dev);
> > > -
> > > - 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);
> > > -
> > > + i915_hdcp_fill_pairing_info_in(&pairing_info_in, pairing_info,
> > > + data);
> > > byte = mei_cldev_send(cldev, (u8 *)&pairing_info_in,
> > > sizeof(pairing_info_in));
> > > if (byte < 0) {
> > > @@ -309,15 +262,7 @@ mei_hdcp_initiate_locality_check(struct device *dev,
> > > cldev = to_mei_cl_device(dev);
> > > - 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;
> > > -
> > > + i915_hdcp_fill_locality_check_in(&lc_init_in, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
> > > if (byte < 0) {
> > > dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
> > > @@ -364,19 +309,8 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
> > > cldev = to_mei_cl_device(dev);
> > > - 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);
> > > -
> > > + i915_hdcp_fill_validate_locality_in(&verify_lprime_in, rx_lprime,
> > > + data);
> > > byte = mei_cldev_send(cldev, (u8 *)&verify_lprime_in,
> > > sizeof(verify_lprime_in));
> > > if (byte < 0) {
> > > @@ -423,15 +357,7 @@ static int mei_hdcp_get_session_key(struct device *dev,
> > > cldev = to_mei_cl_device(dev);
> > > - 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;
> > > -
> > > + i915_hdcp_fill_session_key_in(&get_skey_in, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
> > > if (byte < 0) {
> > > dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
> > > @@ -487,25 +413,7 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
> > > cldev = to_mei_cl_device(dev);
> > > - 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);
> > > -
> > > + i915_hdcp_fill_repeater_in(&verify_repeater_in, rep_topology, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&verify_repeater_in,
> > > sizeof(verify_repeater_in));
> > > if (byte < 0) {
> > > @@ -566,23 +474,8 @@ static int mei_hdcp_verify_mprime(struct device *dev,
> > > 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);
> > > -
> > > + i915_hdcp_fill_auth_stream_req_in(verify_mprime_in, stream_ready,
> > > + cmd_size, data);
> > > byte = mei_cldev_send(cldev, (u8 *)verify_mprime_in, cmd_size);
> > > kfree(verify_mprime_in);
> > > if (byte < 0) {
> > > @@ -628,16 +521,7 @@ static int mei_hdcp_enable_authentication(struct device *dev,
> > > cldev = to_mei_cl_device(dev);
> > > - 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;
> > > -
> > > + i915_hdcp_fill_enable_auth_in(&enable_auth_in, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
> > > sizeof(enable_auth_in));
> > > if (byte < 0) {
> > > @@ -682,16 +566,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
> > > cldev = to_mei_cl_device(dev);
> > > - 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;
> > > -
> > > + i915_hdcp_fill_close_session_in(&session_close_in, data);
> > > byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
> > > sizeof(session_close_in));
> > > if (byte < 0) {
> > > diff --git a/include/drm/i915_hdcp_interface.h b/include/drm/i915_hdcp_interface.h
> > > index a92925cd1eae..9952bf78d4f7 100644
> > > --- a/include/drm/i915_hdcp_interface.h
> > > +++ b/include/drm/i915_hdcp_interface.h
> > > @@ -536,4 +536,43 @@ struct wired_cmd_repeater_auth_stream_req_out {
> > > struct hdcp_port_id port;
> > > } __packed;
> > > +void
> > > +i915_hdcp_fill_session_in(struct wired_cmd_initiate_hdcp2_session_in *session_init_in,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_rxcert_in(struct wired_cmd_verify_receiver_cert_in *verify_rxcert_in,
> > > + struct hdcp2_ake_send_cert *rx_cert,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_hprime_in(struct wired_cmd_ake_send_hprime_in *send_hprime_in,
> > > + struct hdcp2_ake_send_hprime *rx_hprime,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_pairing_info_in(struct wired_cmd_ake_send_pairing_info_in *pairing_info_in,
> > > + struct hdcp2_ake_send_pairing_info *pairing_info,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_locality_check_in(struct wired_cmd_init_locality_check_in *lc_init_in,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_validate_locality_in(struct wired_cmd_validate_locality_in *verify_lprime_in,
> > > + struct hdcp2_lc_send_lprime *rx_lprime,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_session_key_in(struct wired_cmd_get_session_key_in *get_skey_in,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_repeater_in(struct wired_cmd_verify_repeater_in *verify_repeater_in,
> > > + struct hdcp2_rep_send_receiverid_list *rep_topology,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_auth_stream_req_in(struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in,
> > > + struct hdcp2_rep_stream_ready *stream_ready, ssize_t cmd_size,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_enable_auth_in(struct wired_cmd_enable_auth_in *enable_auth_in,
> > > + struct hdcp_port_data *data);
> > > +void
> > > +i915_hdcp_fill_close_session_in(struct wired_cmd_close_session_in *session_close_in,
> > > + struct hdcp_port_data *data);
> > > #endif /* _I915_HDCP_INTERFACE_H_ */
> >
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