Add support for multiple mst stream in hdcp port data
which will be used by RepeaterAuthStreamManage msg and
HDCP 2.2 security f/w for m' validation.
v2:
Init the hdcp port data k for HDMI/DP SST strem.
Cc: Ramalingam C <ramalingam.c@xxxxxxxxx>
Signed-off-by: Anshuman Gupta <anshuman.gupta@xxxxxxxxx>
---
.../drm/i915/display/intel_display_types.h | 4 +-
drivers/gpu/drm/i915/display/intel_hdcp.c | 100 +++++++++++++++---
2 files changed, 90 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index cde99ad969b3..fbdeaac17bc4 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1443,10 +1443,12 @@ struct intel_digital_port {
enum phy_fia tc_phy_fia;
u8 tc_phy_fia_idx;
- /* protects num_hdcp_streams reference count, port_data */
+ /* protects num_hdcp_streams reference count, port_data and port_auth */
struct mutex hdcp_mutex;
/* the number of pipes using HDCP signalling out of this port */
unsigned int num_hdcp_streams;
+ /* port HDCP auth status */
+ bool port_auth;
/* HDCP port data need to pass to security f/w */
struct hdcp_port_data port_data;
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 1a6ac24efe2d..ef0e33cfbe8e 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -26,6 +26,62 @@
#define KEY_LOAD_TRIES 5
#define HDCP2_LC_RETRY_CNT 3
+static int intel_conn_to_vcpi(struct intel_connector *connector)
+{
+ /* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */
+ return connector->port ? connector->port->vcpi.vcpi : 0;
+}
+
+static int
+intel_hdcp_required_content_stream(struct intel_digital_port *dig_port)
+{
+ struct drm_connector_list_iter conn_iter;
+ struct intel_digital_port *conn_dig_port;
+ struct intel_connector *connector;
+ struct intel_hdcp *hdcp;
+ struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+ struct hdcp_port_data *data = &dig_port->port_data;
+ bool enforce_type0 = false;
+ int k;
+
+ if (dig_port->port_auth)
+ return 0;
+
+ drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+ for_each_intel_connector_iter(connector, &conn_iter) {
+ if (!intel_encoder_is_mst(intel_attached_encoder(connector)))
+ continue;
+
+ conn_dig_port = intel_attached_dig_port(connector);
+ if (conn_dig_port != dig_port)
+ continue;
+
+ if (connector->base.status == connector_status_disconnected)
+ continue;
+
+ hdcp = &connector->hdcp;
+ if (!enforce_type0 && (hdcp->content_type && !intel_hdcp2_capable(connector)))
+ enforce_type0 = true;
+
+ data->streams[data->k].stream_id = intel_conn_to_vcpi(connector);
+ data->k++;
+
+ /* if there is only one active stream */
+ if (dig_port->dp.active_mst_links <= 1)
+ break;
+ }
+ drm_connector_list_iter_end(&conn_iter);
+
+ if (drm_WARN_ON(&i915->drm, data->k > INTEL_NUM_PIPES(i915) || data->k == 0))
+ return -EINVAL;
+
+ for (k = 0; k < data->k; k++)
+ data->streams[k].stream_type =
+ enforce_type0 ? DRM_MODE_HDCP_CONTENT_TYPE0 : hdcp->content_type;
+
+ return 0;
+}
+
static
bool intel_hdcp_is_ksv_valid(u8 *ksv)
{
@@ -1296,6 +1352,7 @@ static int hdcp2_authenticate_port(struct intel_connector *connector)
if (ret < 0)
drm_dbg_kms(&dev_priv->drm, "Enable hdcp auth failed. %d\n",
ret);
+
mutex_unlock(&dev_priv->hdcp_comp_mutex);
return ret;
@@ -1477,13 +1534,14 @@ static
int _hdcp2_propagate_stream_management_info(struct intel_connector *connector)
{
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+ struct hdcp_port_data *data = &dig_port->port_data;
struct intel_hdcp *hdcp = &connector->hdcp;
union {
struct hdcp2_rep_stream_manage stream_manage;
struct hdcp2_rep_stream_ready stream_ready;
} msgs;
const struct intel_hdcp_shim *shim = hdcp->shim;
- int ret;
+ int ret, streams_size_delta, i;
if (connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX)
return -ERANGE;
@@ -1493,15 +1551,18 @@ int _hdcp2_propagate_stream_management_info(struct intel_connector *connector)
drm_hdcp_cpu_to_be24(msgs.stream_manage.seq_num_m, hdcp->seq_num_m);
/* K no of streams is fixed as 1. Stored as big-endian. */
- msgs.stream_manage.k = cpu_to_be16(1);
+ msgs.stream_manage.k = cpu_to_be16(data->k);
- /* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */
- msgs.stream_manage.streams[0].stream_id = 0;
- msgs.stream_manage.streams[0].stream_type = hdcp->content_type;
+ for (i = 0; i < data->k; i++) {
+ msgs.stream_manage.streams[i].stream_id = data->streams[i].stream_id;
+ msgs.stream_manage.streams[i].stream_type = data->streams[i].stream_type;
+ }
+ streams_size_delta = HDCP_2_2_MAX_CONTENT_STREAMS_CNT *
+ sizeof(struct hdcp2_streamid_type) - data->k * sizeof(struct hdcp2_streamid_type);
/* Send it to Repeater */
ret = shim->write_2_2_msg(dig_port, &msgs.stream_manage,
- sizeof(msgs.stream_manage));
+ sizeof(msgs.stream_manage) - streams_size_delta);
if (ret < 0)
goto out;
@@ -1510,8 +1571,7 @@ int _hdcp2_propagate_stream_management_info(struct intel_connector *connector)
if (ret < 0)
goto out;
- dig_port->port_data.seq_num_m = hdcp->seq_num_m;
- dig_port->port_data.streams[0].stream_type = hdcp->content_type;
+ data->seq_num_m = hdcp->seq_num_m;
ret = hdcp2_verify_mprime(connector, &msgs.stream_ready);
@@ -1672,6 +1732,7 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
port),
LINK_ENCRYPTION_STATUS,
HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
+ dig_port->port_auth = true;
return ret;
}
@@ -1746,11 +1807,9 @@ static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
{
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
- struct hdcp_port_data *data = &dig_port->port_data;
- struct intel_hdcp *hdcp = &connector->hdcp;
- int ret, i, tries = 3;
+ int ret = 0, i, tries = 3;
- for (i = 0; i < tries; i++) {
+ for (i = 0; i < tries && !dig_port->port_auth; i++) {
ret = hdcp2_authenticate_sink(connector);
if (!ret) {
ret = hdcp2_propagate_stream_management_info(connector);
@@ -1760,7 +1819,7 @@ static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
ret);
break;
}
- data->streams[0].stream_type = hdcp->content_type;
+
ret = hdcp2_authenticate_port(connector);
if (!ret)
break;
@@ -1795,7 +1854,9 @@ static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
static int _intel_hdcp2_enable(struct intel_connector *connector)
{
+ struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct hdcp_port_data *data = &dig_port->port_data;
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
@@ -1803,6 +1864,15 @@ static int _intel_hdcp2_enable(struct intel_connector *connector)
connector->base.name, connector->base.base.id,
hdcp->content_type);
+ /* Stream which requires encryption */
+ if (!intel_encoder_is_mst(intel_attached_encoder(connector))) {
+ data->k = 1;
+ } else {
+ ret = intel_hdcp_required_content_stream(dig_port);
+ if (ret)
+ return ret;
+ }
+
ret = hdcp2_authenticate_and_encrypt(connector);
if (ret) {
drm_dbg_kms(&i915->drm, "HDCP2 Type%d Enabling Failed. (%d)\n",
@@ -1820,7 +1890,9 @@ static int _intel_hdcp2_enable(struct intel_connector *connector)
static int _intel_hdcp2_disable(struct intel_connector *connector)
{
+ struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct hdcp_port_data *data = &dig_port->port_data;
int ret;
drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is being Disabled\n",
@@ -1832,6 +1904,8 @@ static int _intel_hdcp2_disable(struct intel_connector *connector)
drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
connector->hdcp.hdcp2_encrypted = false;
+ dig_port->port_auth = false;
+ data->k = 0;
return ret;
}
--
2.26.2
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