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path: root/drivers/gpu/drm/i915/display/intel_hdcp.c
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Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp.c')
-rw-r--r--drivers/gpu/drm/i915/display/intel_hdcp.c296
1 files changed, 149 insertions, 147 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 39b3f7c0c..9edac27ba 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -30,7 +30,7 @@
#define KEY_LOAD_TRIES 5
#define HDCP2_LC_RETRY_CNT 3
-static int intel_conn_to_vcpi(struct drm_atomic_state *state,
+static int intel_conn_to_vcpi(struct intel_atomic_state *state,
struct intel_connector *connector)
{
struct drm_dp_mst_topology_mgr *mgr;
@@ -43,7 +43,7 @@ static int intel_conn_to_vcpi(struct drm_atomic_state *state,
return 0;
mgr = connector->port->mgr;
- drm_modeset_lock(&mgr->base.lock, state->acquire_ctx);
+ drm_modeset_lock(&mgr->base.lock, state->base.acquire_ctx);
mst_state = to_drm_dp_mst_topology_state(mgr->base.state);
payload = drm_atomic_get_mst_payload_state(mst_state, connector->port);
if (drm_WARN_ON(mgr->dev, !payload))
@@ -68,19 +68,51 @@ out:
* DP MST topology. Though it is not compulsory, security fw should change its
* policy to mark different content_types for different streams.
*/
-static void
-intel_hdcp_required_content_stream(struct intel_digital_port *dig_port)
+static int
+intel_hdcp_required_content_stream(struct intel_atomic_state *state,
+ 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 drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
bool enforce_type0 = false;
int k;
if (dig_port->hdcp_auth_status)
- return;
+ return 0;
+
+ data->k = 0;
if (!dig_port->hdcp_mst_type1_capable)
enforce_type0 = true;
+ drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+ for_each_intel_connector_iter(connector, &conn_iter) {
+ if (connector->base.status == connector_status_disconnected)
+ continue;
+
+ 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;
+
+ data->streams[data->k].stream_id =
+ intel_conn_to_vcpi(state, 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;
+
/*
* Apply common protection level across all streams in DP MST Topology.
* Use highest supported content type for all streams in DP MST Topology.
@@ -88,19 +120,25 @@ intel_hdcp_required_content_stream(struct intel_digital_port *dig_port)
for (k = 0; k < data->k; k++)
data->streams[k].stream_type =
enforce_type0 ? DRM_MODE_HDCP_CONTENT_TYPE0 : DRM_MODE_HDCP_CONTENT_TYPE1;
+
+ return 0;
}
-static void intel_hdcp_prepare_streams(struct intel_connector *connector)
+static int intel_hdcp_prepare_streams(struct intel_atomic_state *state,
+ struct intel_connector *connector)
{
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
struct intel_hdcp *hdcp = &connector->hdcp;
- if (!intel_encoder_is_mst(intel_attached_encoder(connector))) {
- data->streams[0].stream_type = hdcp->content_type;
- } else {
- intel_hdcp_required_content_stream(dig_port);
- }
+ if (intel_encoder_is_mst(intel_attached_encoder(connector)))
+ return intel_hdcp_required_content_stream(state, dig_port);
+
+ data->k = 1;
+ data->streams[0].stream_id = 0;
+ data->streams[0].stream_type = hdcp->content_type;
+
+ return 0;
}
static
@@ -140,7 +178,7 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port,
}
/* Is HDCP1.4 capable on Platform and Sink */
-bool intel_hdcp_capable(struct intel_connector *connector)
+bool intel_hdcp_get_capability(struct intel_connector *connector)
{
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
const struct intel_hdcp_shim *shim = connector->hdcp.shim;
@@ -150,8 +188,8 @@ bool intel_hdcp_capable(struct intel_connector *connector)
if (!shim)
return capable;
- if (shim->hdcp_capable) {
- shim->hdcp_capable(dig_port, &capable);
+ if (shim->hdcp_get_capability) {
+ shim->hdcp_get_capability(dig_port, &capable);
} else {
if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv))
capable = true;
@@ -160,12 +198,14 @@ bool intel_hdcp_capable(struct intel_connector *connector)
return capable;
}
-/* Is HDCP2.2 capable on Platform and Sink */
-bool intel_hdcp2_capable(struct intel_connector *connector)
+/*
+ * Check if the source has all the building blocks ready to make
+ * HDCP 2.2 work
+ */
+static bool intel_hdcp2_prerequisite(struct intel_connector *connector)
{
struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
- bool capable = false;
/* I915 support for HDCP2.2 */
if (!hdcp->hdcp2_supported)
@@ -185,12 +225,40 @@ bool intel_hdcp2_capable(struct intel_connector *connector)
}
mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ return true;
+}
+
+/* Is HDCP2.2 capable on Platform and Sink */
+bool intel_hdcp2_get_capability(struct intel_connector *connector)
+{
+ struct intel_hdcp *hdcp = &connector->hdcp;
+ bool capable = false;
+
+ if (!intel_hdcp2_prerequisite(connector))
+ return false;
+
/* Sink's capability for HDCP2.2 */
- hdcp->shim->hdcp_2_2_capable(connector, &capable);
+ hdcp->shim->hdcp_2_2_get_capability(connector, &capable);
return capable;
}
+void intel_hdcp_get_remote_capability(struct intel_connector *connector,
+ bool *hdcp_capable,
+ bool *hdcp2_capable)
+{
+ struct intel_hdcp *hdcp = &connector->hdcp;
+
+ if (!hdcp->shim->get_remote_hdcp_capability)
+ return;
+
+ hdcp->shim->get_remote_hdcp_capability(connector, hdcp_capable,
+ hdcp2_capable);
+
+ if (!intel_hdcp2_prerequisite(connector))
+ *hdcp2_capable = false;
+}
+
static bool intel_hdcp_in_use(struct drm_i915_private *i915,
enum transcoder cpu_transcoder, enum port port)
{
@@ -347,7 +415,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *i915,
default:
drm_err(&i915->drm, "Unknown transcoder %d\n",
cpu_transcoder);
- return -EINVAL;
+ return 0;
}
}
@@ -364,7 +432,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *i915,
return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
default:
drm_err(&i915->drm, "Unknown port %d\n", port);
- return -EINVAL;
+ return 0;
}
}
@@ -726,8 +794,8 @@ static int intel_hdcp_auth(struct intel_connector *connector)
* whether the display supports HDCP before we write An. For HDMI
* displays, this is not necessary.
*/
- if (shim->hdcp_capable) {
- ret = shim->hdcp_capable(dig_port, &hdcp_capable);
+ if (shim->hdcp_get_capability) {
+ ret = shim->hdcp_get_capability(dig_port, &hdcp_capable);
if (ret)
return ret;
if (!hdcp_capable) {
@@ -853,8 +921,8 @@ static int intel_hdcp_auth(struct intel_connector *connector)
if (shim->stream_encryption) {
ret = shim->stream_encryption(connector, true);
if (ret) {
- drm_err(&i915->drm, "[%s:%d] Failed to enable HDCP 1.4 stream enc\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 1.4 stream enc\n",
+ connector->base.base.id, connector->base.name);
return ret;
}
drm_dbg_kms(&i915->drm, "HDCP 1.4 transcoder: %s stream encrypted\n",
@@ -878,14 +946,14 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
u32 repeater_ctl;
int ret;
- drm_dbg_kms(&i915->drm, "[%s:%d] HDCP is being disabled...\n",
- connector->base.name, connector->base.base.id);
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP is being disabled...\n",
+ connector->base.base.id, connector->base.name);
if (hdcp->shim->stream_encryption) {
ret = hdcp->shim->stream_encryption(connector, false);
if (ret) {
- drm_err(&i915->drm, "[%s:%d] Failed to disable HDCP 1.4 stream enc\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 1.4 stream enc\n",
+ connector->base.base.id, connector->base.name);
return ret;
}
drm_dbg_kms(&i915->drm, "HDCP 1.4 transcoder: %s stream encryption disabled\n",
@@ -929,8 +997,8 @@ static int intel_hdcp1_enable(struct intel_connector *connector)
struct intel_hdcp *hdcp = &connector->hdcp;
int i, ret, tries = 3;
- drm_dbg_kms(&i915->drm, "[%s:%d] HDCP is being enabled...\n",
- connector->base.name, connector->base.base.id);
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP is being enabled...\n",
+ connector->base.base.id, connector->base.name);
if (!hdcp_key_loadable(i915)) {
drm_err(&i915->drm, "HDCP key Load is not possible\n");
@@ -1027,8 +1095,8 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
if (drm_WARN_ON(&i915->drm,
!intel_hdcp_in_use(i915, cpu_transcoder, port))) {
drm_err(&i915->drm,
- "%s:%d HDCP link stopped encryption,%x\n",
- connector->base.name, connector->base.base.id,
+ "[CONNECTOR:%d:%s] HDCP link stopped encryption,%x\n",
+ connector->base.base.id, connector->base.name,
intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)));
ret = -ENXIO;
intel_hdcp_update_value(connector,
@@ -1046,8 +1114,8 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
}
drm_dbg_kms(&i915->drm,
- "[%s:%d] HDCP link failed, retrying authentication\n",
- connector->base.name, connector->base.base.id);
+ "[CONNECTOR:%d:%s] HDCP link failed, retrying authentication\n",
+ connector->base.base.id, connector->base.name);
ret = _intel_hdcp_disable(connector);
if (ret) {
@@ -1058,15 +1126,9 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
goto out;
}
- ret = intel_hdcp1_enable(connector);
- if (ret) {
- drm_err(&i915->drm, "Failed to enable hdcp (%d)\n", ret);
- intel_hdcp_update_value(connector,
- DRM_MODE_CONTENT_PROTECTION_DESIRED,
- true);
- goto out;
- }
-
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
out:
mutex_unlock(&dig_port->hdcp_mutex);
mutex_unlock(&hdcp->mutex);
@@ -1633,6 +1695,12 @@ int hdcp2_authenticate_repeater_topology(struct intel_connector *connector)
!HDCP_2_2_HDCP1_DEVICE_CONNECTED(rx_info[1]) &&
!HDCP_2_2_HDCP_2_0_REP_CONNECTED(rx_info[1]);
+ if (!dig_port->hdcp_mst_type1_capable && hdcp->content_type) {
+ drm_dbg_kms(&i915->drm,
+ "HDCP1.x or 2.0 Legacy Device Downstream\n");
+ return -EINVAL;
+ }
+
/* Converting and Storing the seq_num_v to local variable as DWORD */
seq_num_v =
drm_hdcp_be24_to_cpu((const u8 *)msgs.recvid_list.seq_num_v);
@@ -1731,8 +1799,8 @@ static int hdcp2_enable_stream_encryption(struct intel_connector *connector)
if (!(intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)) &
LINK_ENCRYPTION_STATUS)) {
- drm_err(&i915->drm, "[%s:%d] HDCP 2.2 Link is not encrypted\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] HDCP 2.2 Link is not encrypted\n",
+ connector->base.base.id, connector->base.name);
ret = -EPERM;
goto link_recover;
}
@@ -1740,8 +1808,8 @@ static int hdcp2_enable_stream_encryption(struct intel_connector *connector)
if (hdcp->shim->stream_2_2_encryption) {
ret = hdcp->shim->stream_2_2_encryption(connector, true);
if (ret) {
- drm_err(&i915->drm, "[%s:%d] Failed to enable HDCP 2.2 stream enc\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 2.2 stream enc\n",
+ connector->base.base.id, connector->base.name);
return ret;
}
drm_dbg_kms(&i915->drm, "HDCP 2.2 transcoder: %s stream encrypted\n",
@@ -1865,7 +1933,8 @@ hdcp2_propagate_stream_management_info(struct intel_connector *connector)
return ret;
}
-static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
+static int hdcp2_authenticate_and_encrypt(struct intel_atomic_state *state,
+ 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);
@@ -1874,7 +1943,13 @@ static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
for (i = 0; i < tries && !dig_port->hdcp_auth_status; i++) {
ret = hdcp2_authenticate_sink(connector);
if (!ret) {
- intel_hdcp_prepare_streams(connector);
+ ret = intel_hdcp_prepare_streams(state, connector);
+ if (ret) {
+ drm_dbg_kms(&i915->drm,
+ "Prepare stream failed.(%d)\n",
+ ret);
+ break;
+ }
ret = hdcp2_propagate_stream_management_info(connector);
if (ret) {
@@ -1919,25 +1994,26 @@ static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
return ret;
}
-static int _intel_hdcp2_enable(struct intel_connector *connector)
+static int _intel_hdcp2_enable(struct intel_atomic_state *state,
+ struct intel_connector *connector)
{
struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
- drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is being enabled. Type: %d\n",
- connector->base.name, connector->base.base.id,
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being enabled. Type: %d\n",
+ connector->base.base.id, connector->base.name,
hdcp->content_type);
- ret = hdcp2_authenticate_and_encrypt(connector);
+ ret = hdcp2_authenticate_and_encrypt(state, connector);
if (ret) {
drm_dbg_kms(&i915->drm, "HDCP2 Type%d Enabling Failed. (%d)\n",
hdcp->content_type, ret);
return ret;
}
- drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is enabled. Type %d\n",
- connector->base.name, connector->base.base.id,
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is enabled. Type %d\n",
+ connector->base.base.id, connector->base.name,
hdcp->content_type);
hdcp->hdcp2_encrypted = true;
@@ -1953,14 +2029,14 @@ _intel_hdcp2_disable(struct intel_connector *connector, bool hdcp2_link_recovery
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
- drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is being Disabled\n",
- connector->base.name, connector->base.base.id);
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being Disabled\n",
+ connector->base.base.id, connector->base.name);
if (hdcp->shim->stream_2_2_encryption) {
ret = hdcp->shim->stream_2_2_encryption(connector, false);
if (ret) {
- drm_err(&i915->drm, "[%s:%d] Failed to disable HDCP 2.2 stream enc\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 2.2 stream enc\n",
+ connector->base.base.id, connector->base.name);
return ret;
}
drm_dbg_kms(&i915->drm, "HDCP 2.2 transcoder: %s stream encryption disabled\n",
@@ -2032,45 +2108,24 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
drm_dbg_kms(&i915->drm,
"HDCP2.2 Downstream topology change\n");
- ret = hdcp2_authenticate_repeater_topology(connector);
- if (!ret) {
- intel_hdcp_update_value(connector,
- DRM_MODE_CONTENT_PROTECTION_ENABLED,
- true);
- goto out;
- }
- drm_dbg_kms(&i915->drm,
- "[%s:%d] Repeater topology auth failed.(%d)\n",
- connector->base.name, connector->base.base.id,
- ret);
} else {
drm_dbg_kms(&i915->drm,
- "[%s:%d] HDCP2.2 link failed, retrying auth\n",
- connector->base.name, connector->base.base.id);
+ "[CONNECTOR:%d:%s] HDCP2.2 link failed, retrying auth\n",
+ connector->base.base.id, connector->base.name);
}
ret = _intel_hdcp2_disable(connector, true);
if (ret) {
drm_err(&i915->drm,
- "[%s:%d] Failed to disable hdcp2.2 (%d)\n",
- connector->base.name, connector->base.base.id, ret);
+ "[CONNECTOR:%d:%s] Failed to disable hdcp2.2 (%d)\n",
+ connector->base.base.id, connector->base.name, ret);
intel_hdcp_update_value(connector,
DRM_MODE_CONTENT_PROTECTION_DESIRED, true);
goto out;
}
- ret = _intel_hdcp2_enable(connector);
- if (ret) {
- drm_dbg_kms(&i915->drm,
- "[%s:%d] Failed to enable hdcp2.2 (%d)\n",
- connector->base.name, connector->base.base.id,
- ret);
- intel_hdcp_update_value(connector,
- DRM_MODE_CONTENT_PROTECTION_DESIRED,
- true);
- goto out;
- }
-
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED, true);
out:
mutex_unlock(&dig_port->hdcp_mutex);
mutex_unlock(&hdcp->mutex);
@@ -2278,52 +2333,6 @@ int intel_hdcp_init(struct intel_connector *connector,
return 0;
}
-static int
-intel_hdcp_set_streams(struct intel_digital_port *dig_port,
- struct intel_atomic_state *state)
-{
- struct drm_connector_list_iter conn_iter;
- struct intel_digital_port *conn_dig_port;
- struct intel_connector *connector;
- struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
- struct hdcp_port_data *data = &dig_port->hdcp_port_data;
-
- if (!intel_encoder_is_mst(&dig_port->base)) {
- data->k = 1;
- data->streams[0].stream_id = 0;
- return 0;
- }
-
- data->k = 0;
-
- drm_connector_list_iter_begin(&i915->drm, &conn_iter);
- for_each_intel_connector_iter(connector, &conn_iter) {
- if (connector->base.status == connector_status_disconnected)
- continue;
-
- 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;
-
- data->streams[data->k].stream_id =
- intel_conn_to_vcpi(&state->base, 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;
-
- return 0;
-}
-
static int _intel_hdcp_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
@@ -2341,8 +2350,8 @@ static int _intel_hdcp_enable(struct intel_atomic_state *state,
return -ENOENT;
if (!connector->encoder) {
- drm_err(&i915->drm, "[%s:%d] encoder is not initialized\n",
- connector->base.name, connector->base.base.id);
+ drm_err(&i915->drm, "[CONNECTOR:%d:%s] encoder is not initialized\n",
+ connector->base.base.id, connector->base.name);
return -ENODEV;
}
@@ -2368,25 +2377,18 @@ static int _intel_hdcp_enable(struct intel_atomic_state *state,
* Considering that HDCP2.2 is more secure than HDCP1.4, If the setup
* is capable of HDCP2.2, it is preferred to use HDCP2.2.
*/
- if (intel_hdcp2_capable(connector)) {
- ret = intel_hdcp_set_streams(dig_port, state);
- if (!ret) {
- ret = _intel_hdcp2_enable(connector);
- if (!ret)
- check_link_interval =
- DRM_HDCP2_CHECK_PERIOD_MS;
- } else {
- drm_dbg_kms(&i915->drm,
- "Set content streams failed: (%d)\n",
- ret);
- }
+ if (intel_hdcp2_get_capability(connector)) {
+ ret = _intel_hdcp2_enable(state, connector);
+ if (!ret)
+ check_link_interval =
+ DRM_HDCP2_CHECK_PERIOD_MS;
}
/*
* When HDCP2.2 fails and Content Type is not Type1, HDCP1.4 will
* be attempted.
*/
- if (ret && intel_hdcp_capable(connector) &&
+ if (ret && intel_hdcp_get_capability(connector) &&
hdcp->content_type != DRM_MODE_HDCP_CONTENT_TYPE1) {
ret = intel_hdcp1_enable(connector);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 07:21:23 +0000