> -----Original Message----- > From: Mark Yacoub <markyacoub@xxxxxxxxxxxx> > Sent: Saturday, March 25, 2023 1:04 AM > To: Kandpal, Suraj <suraj.kandpal@xxxxxxxxx> > Cc: quic_khsieh@xxxxxxxxxxx; linux-arm-msm@xxxxxxxxxxxxxxx; dri- > devel@xxxxxxxxxxxxxxxxxxxxx; freedreno@xxxxxxxxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; intel- > gfx@xxxxxxxxxxxxxxxxxxxxx; quic_sbillaka@xxxxxxxxxxx; > konrad.dybcio@xxxxxxxxxxxxxx; bjorn.andersson@xxxxxxxxxx; > krzysztof.kozlowski+dt@xxxxxxxxxx; airlied@xxxxxxxxx; hbh25y@xxxxxxxxx; > Vasut, Marek <marex@xxxxxxx>; abhinavk@xxxxxxxxxxxxxx; > javierm@xxxxxxxxxx; agross@xxxxxxxxxx; quic_jesszhan@xxxxxxxxxxx; > daniel@xxxxxxxx; Nikula, Jani <jani.nikula@xxxxxxxxx>; De Marchi, Lucas > <lucas.demarchi@xxxxxxxxx>; quic_abhinavk@xxxxxxxxxxx; > swboyd@xxxxxxxxxxxx; robh+dt@xxxxxxxxxx; > christophe.jaillet@xxxxxxxxxx; maxime@xxxxxxxxxx; Vivi, Rodrigo > <rodrigo.vivi@xxxxxxxxx>; johan+linaro@xxxxxxxxxx; andersson@xxxxxxxxxx; > dianders@xxxxxxxxxxxx; tzimmermann@xxxxxxx; > dmitry.baryshkov@xxxxxxxxxx; seanpaul@xxxxxxxxxxxx > Subject: Re: [Intel-gfx] [PATCH v6 07/10] drm/i915/hdcp: Use HDCP helpers > for i915 > > On Tue, Mar 14, 2023 at 1:54 AM Kandpal, Suraj <suraj.kandpal@xxxxxxxxx> > wrote: > > > > > > > > From: Sean Paul <seanpaul@xxxxxxxxxxxx> > > > > > > Now that all of the HDCP 1.x logic has been migrated to the central HDCP > > > helpers, use it in the i915 driver. > > > > > > The majority of the driver code for HDCP 1.x will live in intel_hdcp.c, > > > however there are a few helper hooks which are connector-specific and > > > need to be partially or fully implemented in the intel_dp_hdcp.c or > > > intel_hdmi.c. > > > > > > We'll leave most of the HDCP 2.x code alone since we don't have another > > > implementation of HDCP 2.x to use as reference for what should and > > > should not live in the drm helpers. The helper will call the overly > > > general enable/disable/is_capable HDCP 2.x callbacks and leave the > > > interesting stuff for the driver. Once we have another HDCP 2.x > > > implementation, we should do a similar migration. > > > > > > Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx> > > > Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> > > > Signed-off-by: Mark Yacoub <markyacoub@xxxxxxxxxxxx> > > > Link: > > > > https://patchwork.freedesktop.org/patch/msgid/20210913175747.47456-8- > > > sean@xxxxxxxxxx #v1 > > > Link: > > > https://patchwork.freedesktop.org/patch/msgid/20210915203834.1439- > 8- > > > sean@xxxxxxxxxx #v2 > > > Link: > > > > https://patchwork.freedesktop.org/patch/msgid/20211001151145.55916-8- > > > sean@xxxxxxxxxx #v3 > > > Link: > > > > https://patchwork.freedesktop.org/patch/msgid/20211105030434.2828845- > > > 8-sean@xxxxxxxxxx #v4 > > > Link: > > > > https://patchwork.freedesktop.org/patch/msgid/20220411204741.1074308- > > > 8-sean@xxxxxxxxxx #v5 > > > > > > Changes in v2: > > > -Fix mst helper function pointer reported by 0-day > > > Changes in v3: > > > -Add forward declaration for drm_atomic_state in intel_hdcp.h identified > > > by 0-day > > > Changes in v4: > > > -None > > > Changes in v5: > > > -None > > > Changes in v6: > > > -Rebased. > > > > > > --- > > > drivers/gpu/drm/i915/display/intel_ddi.c | 32 +- > > > .../drm/i915/display/intel_display_debugfs.c | 6 +- > > > .../drm/i915/display/intel_display_types.h | 60 +- > > > drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 348 +++---- > > > drivers/gpu/drm/i915/display/intel_dp_mst.c | 16 +- > > > drivers/gpu/drm/i915/display/intel_hdcp.c | 952 +++--------------- > > > drivers/gpu/drm/i915/display/intel_hdcp.h | 31 +- > > > drivers/gpu/drm/i915/display/intel_hdmi.c | 270 ++--- > > > 8 files changed, 445 insertions(+), 1270 deletions(-) > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c > > > b/drivers/gpu/drm/i915/display/intel_ddi.c > > > index 69ecf2a3d6c6..a4397f066a3e 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_ddi.c > > > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c > > > @@ -28,6 +28,7 @@ > > > #include <linux/string_helpers.h> > > > > > > #include <drm/display/drm_scdc_helper.h> > > > +#include <drm/display/drm_hdcp_helper.h> > > > #include <drm/drm_privacy_screen_consumer.h> > > > > > > #include "i915_drv.h" > > > @@ -2909,6 +2910,10 @@ static void intel_enable_ddi(struct > > > intel_atomic_state *state, > > > const struct intel_crtc_state *crtc_state, > > > const struct drm_connector_state *conn_state) > > > { > > > + struct intel_connector *connector = > > > + to_intel_connector(conn_state->connector); > > > + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); > > > + > > > drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder); > > > > > > if (!intel_crtc_is_bigjoiner_slave(crtc_state)) > > > @@ -2925,12 +2930,10 @@ static void intel_enable_ddi(struct > > > intel_atomic_state *state, > > > else > > > intel_enable_ddi_dp(state, encoder, crtc_state, > > > conn_state); > > > > > > - /* Enable hdcp if it's desired */ > > > - if (conn_state->content_protection == > > > - DRM_MODE_CONTENT_PROTECTION_DESIRED) > > > - intel_hdcp_enable(to_intel_connector(conn_state- > > > >connector), > > > - crtc_state, > > > - (u8)conn_state->hdcp_content_type); > > > + if (connector->hdcp_helper_data) > > > + drm_hdcp_helper_atomic_commit(connector- > > > >hdcp_helper_data, > > > + &state->base, > > > + &dig_port->hdcp_mutex); > > > } > > > > > > static void intel_disable_ddi_dp(struct intel_atomic_state *state, > > > @@ -2976,7 +2979,14 @@ static void intel_disable_ddi(struct > > > intel_atomic_state *state, > > > const struct intel_crtc_state *old_crtc_state, > > > const struct drm_connector_state > > > *old_conn_state) > > > { > > > - intel_hdcp_disable(to_intel_connector(old_conn_state- > > > >connector)); > > > + struct intel_connector *connector = > > > + to_intel_connector(old_conn_state->connector); > > > + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); > > > + > > > + if (connector->hdcp_helper_data) > > > + drm_hdcp_helper_atomic_commit(connector- > > > >hdcp_helper_data, > > > + &state->base, > > > + &dig_port->hdcp_mutex); > > > > > > if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI)) > > > intel_disable_ddi_hdmi(state, encoder, old_crtc_state, > > > @@ -3004,13 +3014,19 @@ void intel_ddi_update_pipe(struct > > > intel_atomic_state *state, > > > const struct intel_crtc_state *crtc_state, > > > const struct drm_connector_state *conn_state) > > > { > > > + struct intel_connector *connector = > > > + to_intel_connector(conn_state->connector); > > > + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); > > > > > > if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) && > > > !intel_encoder_is_mst(encoder)) > > > intel_ddi_update_pipe_dp(state, encoder, crtc_state, > > > conn_state); > > > > > > - intel_hdcp_update_pipe(state, encoder, crtc_state, conn_state); > > > + if (connector->hdcp_helper_data) > > > + drm_hdcp_helper_atomic_commit(connector- > > > >hdcp_helper_data, > > > + &state->base, > > > + &dig_port->hdcp_mutex); > > > } > > > > > > static void > > > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > > > b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > > > index 13a4153bb76e..2e67cca0151c 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > > > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > > > @@ -7,6 +7,7 @@ > > > > > > #include <drm/drm_debugfs.h> > > > #include <drm/drm_fourcc.h> > > > +#include <drm/display/drm_hdcp_helper.h> > > > > > > #include "i915_debugfs.h" > > > #include "intel_de.h" > > > @@ -500,10 +501,11 @@ static void intel_hdcp_info(struct seq_file *m, > > > goto out; > > > } > > > > > > - ret = intel_hdcp_capable(intel_connector, &hdcp_cap); > > > + ret = drm_hdcp_helper_hdcp1_capable(intel_connector- > > > >hdcp_helper_data, > > > + &hdcp_cap); > > > if (ret) > > > hdcp_cap = false; > > > - ret = intel_hdcp2_capable(intel_connector, &hdcp2_cap); > > > + ret = intel_hdcp2_capable(&intel_connector->base, &hdcp2_cap); > > > if (ret) > > > hdcp2_cap = false; > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h > > > b/drivers/gpu/drm/i915/display/intel_display_types.h > > > index 298d00a11f47..6260a40586ae 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_display_types.h > > > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h > > > @@ -416,71 +416,14 @@ enum check_link_response { > > > * The offsets of the registers are different for DP vs. HDMI > > > * - Receiver register masks/offsets > > > * For instance, the ready bit for the KSV fifo is in a different > > > - * place on DP vs HDMI > > > - * - Receiver register names > > > - * Seriously. In the DP spec, the 16-bit register containing > > > - * downstream information is called BINFO, on HDMI it's called > > > - * BSTATUS. To confuse matters further, DP has a BSTATUS > > > register > > > - * with a completely different definition. > > > - * - KSV FIFO > > > - * On HDMI, the ksv fifo is read all at once, whereas on DP it > > > must > > > - * be read 3 keys at a time > > > - * - Aksv output > > > - * Since Aksv is hidden in hardware, there's different > > > procedures > > > - * to send it over DP AUX vs DDC > > > > I really think we can keep the comment as its mentioning the ways that the > two busses differ > > > Reverted the change. > > > + * place on DP vs HDMI. > > > */ > > > struct intel_hdcp_shim { > > > - /* Outputs the transmitter's An and Aksv values to the receiver. */ > > > - int (*write_an_aksv)(struct intel_digital_port *dig_port, u8 *an); > > > - > > > - /* Reads the receiver's key selection vector */ > > > - int (*read_bksv)(struct intel_digital_port *dig_port, u8 *bksv); > > > - > > > - /* > > > - * Reads BINFO from DP receivers and BSTATUS from HDMI > > > receivers. The > > > - * definitions are the same in the respective specs, but the names > > > are > > > - * different. Call it BSTATUS since that's the name the HDMI spec > > > - * uses and it was there first. > > > - */ > > > - int (*read_bstatus)(struct intel_digital_port *dig_port, > > > - u8 *bstatus); > > > - > > > - /* Determines whether a repeater is present downstream */ > > > - int (*repeater_present)(struct intel_digital_port *dig_port, > > > - bool *repeater_present); > > > - > > > - /* Reads the receiver's Ri' value */ > > > - int (*read_ri_prime)(struct intel_digital_port *dig_port, u8 *ri); > > > - > > > - /* Determines if the receiver's KSV FIFO is ready for consumption */ > > > - int (*read_ksv_ready)(struct intel_digital_port *dig_port, > > > - bool *ksv_ready); > > > - > > > - /* Reads the ksv fifo for num_downstream devices */ > > > - int (*read_ksv_fifo)(struct intel_digital_port *dig_port, > > > - int num_downstream, u8 *ksv_fifo); > > > - > > > - /* Reads a 32-bit part of V' from the receiver */ > > > - int (*read_v_prime_part)(struct intel_digital_port *dig_port, > > > - int i, u32 *part); > > > - > > > /* Enables HDCP signalling on the port */ > > > int (*toggle_signalling)(struct intel_digital_port *dig_port, > > > enum transcoder cpu_transcoder, > > > bool enable); > > > > > > - /* Enable/Disable stream encryption on DP MST Transport Link */ > > > - int (*stream_encryption)(struct intel_connector *connector, > > > - bool enable); > > > - > > > - /* Ensures the link is still protected */ > > > - bool (*check_link)(struct intel_digital_port *dig_port, > > > - struct intel_connector *connector); > > > - > > > - /* Detects panel's hdcp capability. This is optional for HDMI. */ > > > - int (*hdcp_capable)(struct intel_digital_port *dig_port, > > > - bool *hdcp_capable); > > > - > > > /* HDCP adaptation(DP/HDMI) required on the port */ > > > enum hdcp_wired_protocol protocol; > > > > > > @@ -610,6 +553,7 @@ struct intel_connector { > > > struct work_struct modeset_retry_work; > > > > > > struct intel_hdcp hdcp; > > > + struct drm_hdcp_helper_data *hdcp_helper_data; > > > }; > > > > > > struct intel_digital_connector_state { > > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c > > > b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c > > > index 88689124c013..d61ac8d69951 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c > > > +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c > > > @@ -55,17 +55,24 @@ static void intel_dp_hdcp_wait_for_cp_irq(struct > > > intel_hdcp *hdcp, int timeout) > > > DRM_DEBUG_KMS("Timedout at waiting for CP_IRQ\n"); > > > } > > > > > > -static > > > -int intel_dp_hdcp_write_an_aksv(struct intel_digital_port *dig_port, > > > - u8 *an) > > > +static int intel_dp_hdcp1_send_an_aksv(struct drm_connector > > > *drm_connector) > > > { > > > > I think the name intel_dp_hdcp_send_an_aksv should be enough as this > step > > is done only for hdcp 1.x and not hdcp 2.x. > > > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > + struct drm_hdcp_an an; > > > u8 aksv[DRM_HDCP_KSV_LEN] = {}; > > > ssize_t dpcd_ret; > > > + int ret; > > > > > > /* Output An first, that's easy */ > > > + ret = intel_hdcp1_read_an(drm_connector, &an); > > > + if (ret) > > > + return ret; > > > + > > > dpcd_ret = drm_dp_dpcd_write(&dig_port->dp.aux, > > > DP_AUX_HDCP_AN, > > > - an, DRM_HDCP_AN_LEN); > > > + an.bytes, DRM_HDCP_AN_LEN); > > > if (dpcd_ret != DRM_HDCP_AN_LEN) { > > > drm_dbg_kms(&i915->drm, > > > "Failed to write An over DP/AUX (%zd)\n", > > > @@ -91,158 +98,6 @@ int intel_dp_hdcp_write_an_aksv(struct > > > intel_digital_port *dig_port, > > > return 0; > > > } > > > > > > -static int intel_dp_hdcp_read_bksv(struct intel_digital_port *dig_port, > > > - u8 *bksv) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BKSV, > > > bksv, > > > - DRM_HDCP_KSV_LEN); > > > - if (ret != DRM_HDCP_KSV_LEN) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read Bksv from DP/AUX failed (%zd)\n", ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - return 0; > > > -} > > > - > > > -static int intel_dp_hdcp_read_bstatus(struct intel_digital_port *dig_port, > > > - u8 *bstatus) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - > > > - /* > > > - * For some reason the HDMI and DP HDCP specs call this register > > > - * definition by different names. In the HDMI spec, it's called > > > BSTATUS, > > > - * but in DP it's called BINFO. > > > - */ > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_AUX_HDCP_BINFO, > > > - bstatus, DRM_HDCP_BSTATUS_LEN); > > > - if (ret != DRM_HDCP_BSTATUS_LEN) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read bstatus from DP/AUX failed (%zd)\n", ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_read_bcaps(struct intel_digital_port *dig_port, > > > - u8 *bcaps) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_AUX_HDCP_BCAPS, > > > - bcaps, 1); > > > - if (ret != 1) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read bcaps from DP/AUX failed (%zd)\n", ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_repeater_present(struct intel_digital_port *dig_port, > > > - bool *repeater_present) > > > -{ > > > - ssize_t ret; > > > - u8 bcaps; > > > - > > > - ret = intel_dp_hdcp_read_bcaps(dig_port, &bcaps); > > > - if (ret) > > > - return ret; > > > - > > > - *repeater_present = bcaps & DP_BCAPS_REPEATER_PRESENT; > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_read_ri_prime(struct intel_digital_port *dig_port, > > > - u8 *ri_prime) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_AUX_HDCP_RI_PRIME, > > > - ri_prime, DRM_HDCP_RI_LEN); > > > - if (ret != DRM_HDCP_RI_LEN) { > > > - drm_dbg_kms(&i915->drm, "Read Ri' from DP/AUX failed > > > (%zd)\n", > > > - ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_read_ksv_ready(struct intel_digital_port *dig_port, > > > - bool *ksv_ready) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - u8 bstatus; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_AUX_HDCP_BSTATUS, > > > - &bstatus, 1); > > > - if (ret != 1) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read bstatus from DP/AUX failed (%zd)\n", ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - *ksv_ready = bstatus & DP_BSTATUS_READY; > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port, > > > - int num_downstream, u8 *ksv_fifo) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - int i; > > > - > > > - /* KSV list is read via 15 byte window (3 entries @ 5 bytes each) */ > > > - for (i = 0; i < num_downstream; i += 3) { > > > - size_t len = min(num_downstream - i, 3) * > > > DRM_HDCP_KSV_LEN; > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > - DP_AUX_HDCP_KSV_FIFO, > > > - ksv_fifo + i * DRM_HDCP_KSV_LEN, > > > - len); > > > - if (ret != len) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read ksv[%d] from DP/AUX failed > > > (%zd)\n", > > > - i, ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - } > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_read_v_prime_part(struct intel_digital_port > *dig_port, > > > - int i, u32 *part) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - > > > - if (i >= DRM_HDCP_V_PRIME_NUM_PARTS) > > > - return -EINVAL; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > - DP_AUX_HDCP_V_PRIME(i), part, > > > - DRM_HDCP_V_PRIME_PART_LEN); > > > - if (ret != DRM_HDCP_V_PRIME_PART_LEN) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read v'[%d] from DP/AUX failed (%zd)\n", i, ret); > > > - return ret >= 0 ? -EIO : ret; > > > - } > > > - return 0; > > > -} > > > - > > > static > > > int intel_dp_hdcp_toggle_signalling(struct intel_digital_port *dig_port, > > > enum transcoder cpu_transcoder, > > > @@ -252,40 +107,6 @@ int intel_dp_hdcp_toggle_signalling(struct > > > intel_digital_port *dig_port, > > > return 0; > > > } > > > > > > -static > > > -bool intel_dp_hdcp_check_link(struct intel_digital_port *dig_port, > > > - struct intel_connector *connector) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - ssize_t ret; > > > - u8 bstatus; > > > - > > > - ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_AUX_HDCP_BSTATUS, > > > - &bstatus, 1); > > > - if (ret != 1) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read bstatus from DP/AUX failed (%zd)\n", ret); > > > - return false; > > > - } > > > - > > > - return !(bstatus & (DP_BSTATUS_LINK_FAILURE | > > > DP_BSTATUS_REAUTH_REQ)); > > > -} > > > - > > > -static > > > -int intel_dp_hdcp_capable(struct intel_digital_port *dig_port, > > > - bool *hdcp_capable) > > > -{ > > > - ssize_t ret; > > > - u8 bcaps; > > > - > > > - ret = intel_dp_hdcp_read_bcaps(dig_port, &bcaps); > > > - if (ret) > > > - return ret; > > > - > > > - *hdcp_capable = bcaps & DP_BCAPS_HDCP_CAPABLE; > > > - return 0; > > > -} > > > - > > > struct hdcp2_dp_errata_stream_type { > > > u8 msg_id; > > > u8 stream_type; > > > @@ -628,13 +449,19 @@ int intel_dp_hdcp2_check_link(struct > > > intel_digital_port *dig_port, > > > return ret; > > > } > > > > > > -static > > > -int intel_dp_hdcp2_capable(struct intel_digital_port *dig_port, > > > - bool *capable) > > > +static int intel_dp_hdcp2_capable(struct drm_connector > *drm_connector, > > > + bool *capable) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > u8 rx_caps[3]; > > > int ret; > > > > > > + ret = intel_hdcp2_capable(drm_connector, capable); > > > + if (ret || !capable) > > > + return ret; > > > + > > > *capable = false; > > > ret = drm_dp_dpcd_read(&dig_port->dp.aux, > > > DP_HDCP_2_2_REG_RX_CAPS_OFFSET, > > > @@ -650,22 +477,11 @@ int intel_dp_hdcp2_capable(struct > > > intel_digital_port *dig_port, > > > } > > > > > > static const struct intel_hdcp_shim intel_dp_hdcp_shim = { > > > - .write_an_aksv = intel_dp_hdcp_write_an_aksv, > > > - .read_bksv = intel_dp_hdcp_read_bksv, > > > - .read_bstatus = intel_dp_hdcp_read_bstatus, > > > - .repeater_present = intel_dp_hdcp_repeater_present, > > > - .read_ri_prime = intel_dp_hdcp_read_ri_prime, > > > - .read_ksv_ready = intel_dp_hdcp_read_ksv_ready, > > > - .read_ksv_fifo = intel_dp_hdcp_read_ksv_fifo, > > > - .read_v_prime_part = intel_dp_hdcp_read_v_prime_part, > > > .toggle_signalling = intel_dp_hdcp_toggle_signalling, > > > - .check_link = intel_dp_hdcp_check_link, > > > - .hdcp_capable = intel_dp_hdcp_capable, > > > .write_2_2_msg = intel_dp_hdcp2_write_msg, > > > .read_2_2_msg = intel_dp_hdcp2_read_msg, > > > .config_stream_type = intel_dp_hdcp2_config_stream_type, > > > .check_2_2_link = intel_dp_hdcp2_check_link, > > > - .hdcp_2_2_capable = intel_dp_hdcp2_capable, > > > .protocol = HDCP_PROTOCOL_DP, > > > }; > > > > > > @@ -721,6 +537,46 @@ intel_dp_mst_hdcp_stream_encryption(struct > > > intel_connector *connector, > > > return 0; > > > } > > > > > > +static int > > > +intel_dp_mst_hdcp1_post_encryption(struct drm_connector > > > *drm_connector) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + int ret; > > > + > > > + ret = intel_hdcp1_post_encryption(drm_connector); > > > + if (ret) > > > + return ret; > > > + > > > + return intel_dp_mst_hdcp_stream_encryption(connector, true); > > > +} > > > + > > > +static int intel_dp_mst_hdcp1_disable(struct drm_connector > > > *drm_connector) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *i915 = to_i915(connector->base.dev); > > > + int ret; > > > + > > > + ret = intel_dp_mst_hdcp_stream_encryption(connector, true); > > > + if (ret) { > > > + drm_err(&i915->drm, > > > + "[%s:%d] Failed to disable HDCP 1.4 stream enc\n", > > > + connector->base.name, connector->base.base.id); > > > + return ret; > > > + } > > > + > > > + /* > > > + * If there are other connectors on this port using HDCP, > > > + * don't disable it until it disabled HDCP encryption for > > > + * all connectors in MST topology. > > > + */ > > > + if (dig_port->num_hdcp_streams > 0) > > > + return 0; > > > + > > > + return intel_hdcp1_disable(drm_connector); > > > +} > > > + > > > static int > > > intel_dp_mst_hdcp2_stream_encryption(struct intel_connector > > > *connector, > > > bool enable) > > > @@ -779,45 +635,85 @@ int intel_dp_mst_hdcp2_check_link(struct > > > intel_digital_port *dig_port, > > > } > > > > > > static const struct intel_hdcp_shim intel_dp_mst_hdcp_shim = { > > > - .write_an_aksv = intel_dp_hdcp_write_an_aksv, > > > - .read_bksv = intel_dp_hdcp_read_bksv, > > > - .read_bstatus = intel_dp_hdcp_read_bstatus, > > > - .repeater_present = intel_dp_hdcp_repeater_present, > > > - .read_ri_prime = intel_dp_hdcp_read_ri_prime, > > > - .read_ksv_ready = intel_dp_hdcp_read_ksv_ready, > > > - .read_ksv_fifo = intel_dp_hdcp_read_ksv_fifo, > > > - .read_v_prime_part = intel_dp_hdcp_read_v_prime_part, > > > .toggle_signalling = intel_dp_hdcp_toggle_signalling, > > > - .stream_encryption = intel_dp_mst_hdcp_stream_encryption, > > > - .check_link = intel_dp_hdcp_check_link, > > > - .hdcp_capable = intel_dp_hdcp_capable, > > > .write_2_2_msg = intel_dp_hdcp2_write_msg, > > > .read_2_2_msg = intel_dp_hdcp2_read_msg, > > > .config_stream_type = intel_dp_hdcp2_config_stream_type, > > > .stream_2_2_encryption = intel_dp_mst_hdcp2_stream_encryption, > > > .check_2_2_link = intel_dp_mst_hdcp2_check_link, > > > - .hdcp_2_2_capable = intel_dp_hdcp2_capable, > > > .protocol = HDCP_PROTOCOL_DP, > > > }; > > > > > > +static const struct drm_hdcp_helper_funcs intel_dp_hdcp_helper_funcs > = { > > > + .setup = intel_hdcp_setup, > > > + .load_keys = intel_hdcp_load_keys, > > > + .hdcp2_capable = intel_dp_hdcp2_capable, > > > + .hdcp2_enable = intel_hdcp2_enable, > > > + .hdcp2_check_link = intel_hdcp2_check_link, > > > + .hdcp2_disable = intel_hdcp2_disable, > > > + .hdcp1_send_an_aksv = intel_dp_hdcp1_send_an_aksv, > > > + .hdcp1_store_receiver_info = intel_hdcp1_store_receiver_info, > > > + .hdcp1_enable_encryption = intel_hdcp1_enable_encryption, > > > + .hdcp1_wait_for_r0 = intel_hdcp1_wait_for_r0, > > > + .hdcp1_match_ri = intel_hdcp1_match_ri, > > > + .hdcp1_post_encryption = intel_hdcp1_post_encryption, > > > + .hdcp1_store_ksv_fifo = intel_hdcp1_store_ksv_fifo, > > > + .hdcp1_disable = intel_hdcp1_disable, > > > +}; > > > + > > > +static const struct drm_hdcp_helper_funcs > > > intel_dp_mst_hdcp_helper_funcs = { > > > + .setup = intel_hdcp_setup, > > > + .load_keys = intel_hdcp_load_keys, > > > + .hdcp2_capable = intel_dp_hdcp2_capable, > > > + .hdcp2_enable = intel_hdcp2_enable, > > > + .hdcp2_check_link = intel_hdcp2_check_link, > > > + .hdcp2_disable = intel_hdcp2_disable, > > > + .hdcp1_send_an_aksv = intel_dp_hdcp1_send_an_aksv, > > > + .hdcp1_store_receiver_info = intel_hdcp1_store_receiver_info, > > > + .hdcp1_enable_encryption = intel_hdcp1_enable_encryption, > > > + .hdcp1_wait_for_r0 = intel_hdcp1_wait_for_r0, > > > + .hdcp1_match_ri = intel_hdcp1_match_ri, > > > + .hdcp1_post_encryption = intel_dp_mst_hdcp1_post_encryption, > > > + .hdcp1_store_ksv_fifo = intel_hdcp1_store_ksv_fifo, > > > + .hdcp1_disable = intel_dp_mst_hdcp1_disable, > > > +}; > > > + > > > int intel_dp_hdcp_init(struct intel_digital_port *dig_port, > > > - struct intel_connector *intel_connector) > > > + struct intel_connector *connector) > > > { > > > - struct drm_device *dev = intel_connector->base.dev; > > > - struct drm_i915_private *dev_priv = to_i915(dev); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > struct intel_encoder *intel_encoder = &dig_port->base; > > > enum port port = intel_encoder->port; > > > struct intel_dp *intel_dp = &dig_port->dp; > > > + struct drm_hdcp_helper_data *data; > > > + const struct drm_hdcp_helper_funcs *helper_funcs; > > > + const struct intel_hdcp_shim *intel_shim; > > > + int ret; > > > > > > - if (!is_hdcp_supported(dev_priv, port)) > > > + if (!is_hdcp_supported(dev_priv, port) || > > > intel_dp_is_edp(intel_dp)) > > > return 0; > > > > > > - if (intel_connector->mst_port) > > > - return intel_hdcp_init(intel_connector, dig_port, > > > - &intel_dp_mst_hdcp_shim); > > > - else if (!intel_dp_is_edp(intel_dp)) > > > - return intel_hdcp_init(intel_connector, dig_port, > > > - &intel_dp_hdcp_shim); > > > + if (connector->mst_port) { > > > + helper_funcs = &intel_dp_mst_hdcp_helper_funcs; > > > + intel_shim = &intel_dp_mst_hdcp_shim; > > > + } else { > > > + helper_funcs = &intel_dp_hdcp_helper_funcs; > > > + intel_shim = &intel_dp_hdcp_shim; > > > + } > > > + > > > + data = drm_hdcp_helper_initialize_dp( > > > + &connector->base, &dig_port->dp.aux, helper_funcs, true); > > > > The alignment here needs fixing > > > > > + if (IS_ERR(data)) { > > > + drm_dbg_kms(&dev_priv->drm, "HDCP init failed, > > > skipping.\n"); > > > + return PTR_ERR(data); > > > + } > > > + > > > + ret = intel_hdcp_init(connector, dig_port, intel_shim); > > > + if (ret) { > > > + drm_hdcp_helper_destroy(data); > > > + return ret; > > > + } > > > > > > + connector->hdcp_helper_data = data; > > > return 0; > > > } > > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c > > > b/drivers/gpu/drm/i915/display/intel_dp_mst.c > > > index 03604a37931c..ececb7aa4b90 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c > > > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c > > > @@ -27,6 +27,7 @@ > > > #include <drm/drm_atomic_helper.h> > > > #include <drm/drm_edid.h> > > > #include <drm/drm_probe_helper.h> > > > +#include <drm/display/drm_hdcp_helper.h> > > > > > > #include "i915_drv.h" > > > #include "intel_atomic.h" > > > @@ -40,7 +41,6 @@ > > > #include "intel_dp_hdcp.h" > > > #include "intel_dp_mst.h" > > > #include "intel_dpio_phy.h" > > > -#include "intel_hdcp.h" > > > #include "intel_hotplug.h" > > > #include "skl_scaler.h" > > > > > > @@ -371,7 +371,10 @@ static void intel_mst_disable_dp(struct > > > intel_atomic_state *state, > > > drm_dbg_kms(&i915->drm, "active links %d\n", > > > intel_dp->active_mst_links); > > > > > > - intel_hdcp_disable(intel_mst->connector); > > > + if (connector->hdcp_helper_data) > > > + drm_hdcp_helper_atomic_commit(connector- > > > >hdcp_helper_data, > > > + &state->base, > > > + &dig_port->hdcp_mutex); > > > > > > drm_dp_remove_payload(&intel_dp->mst_mgr, mst_state, > > > drm_atomic_get_mst_payload_state(mst_state, > > > connector->port)); > > > @@ -579,11 +582,10 @@ static void intel_mst_enable_dp(struct > > > intel_atomic_state *state, > > > intel_audio_codec_enable(encoder, pipe_config, conn_state); > > > > > > /* Enable hdcp if it's desired */ > > > - if (conn_state->content_protection == > > > - DRM_MODE_CONTENT_PROTECTION_DESIRED) > > > - intel_hdcp_enable(to_intel_connector(conn_state- > > > >connector), > > > - pipe_config, > > > - (u8)conn_state->hdcp_content_type); > > > + if (connector->hdcp_helper_data) > > > + drm_hdcp_helper_atomic_commit(connector- > > > >hdcp_helper_data, > > > + &state->base, > > > + &dig_port->hdcp_mutex); > > > } > > > > > > static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder > *encoder, > > > diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c > > > b/drivers/gpu/drm/i915/display/intel_hdcp.c > > > index 61a862ae1f28..f09afbc9567b 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_hdcp.c > > > +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c > > > @@ -140,67 +140,10 @@ static int intel_hdcp_prepare_streams(struct > > > intel_connector *connector) > > > return 0; > > > } > > > > > > -static > > > -bool intel_hdcp_is_ksv_valid(u8 *ksv) > > > -{ > > > - int i, ones = 0; > > > - /* KSV has 20 1's and 20 0's */ > > > - for (i = 0; i < DRM_HDCP_KSV_LEN; i++) > > > - ones += hweight8(ksv[i]); > > > - if (ones != 20) > > > - return false; > > > - > > > - return true; > > > -} > > > - > > > -static > > > -int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port, > > > - const struct intel_hdcp_shim *shim, u8 *bksv) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int ret, i, tries = 2; > > > - > > > - /* HDCP spec states that we must retry the bksv if it is invalid */ > > > - for (i = 0; i < tries; i++) { > > > - ret = shim->read_bksv(dig_port, bksv); > > > - if (ret) > > > - return ret; > > > - if (intel_hdcp_is_ksv_valid(bksv)) > > > - break; > > > - } > > > - if (i == tries) { > > > - drm_dbg_kms(&i915->drm, "Bksv is invalid\n"); > > > - return -ENODEV; > > > - } > > > - > > > - return 0; > > > -} > > > - > > > -/* Is HDCP1.4 capable on Platform and Sink */ > > > -int intel_hdcp_capable(struct intel_connector *connector, bool > *capable) > > > -{ > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - const struct intel_hdcp_shim *shim = connector->hdcp.shim; > > > - u8 bksv[5]; > > > - > > > - *capable = false; > > > - > > > - if (!shim) > > > - return 0; > > > - > > > - if (shim->hdcp_capable) > > > - return shim->hdcp_capable(dig_port, capable); > > > - > > > - if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv)) > > > - *capable = true; > > > - > > > - return 0; > > > -} > > > - > > > /* Is HDCP2.2 capable on Platform and Sink */ > > > -int intel_hdcp2_capable(struct intel_connector *connector, bool > *capable) > > > +int intel_hdcp2_capable(struct drm_connector *drm_connector, bool > > > *capable) > > > { > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > struct intel_hdcp *hdcp = &connector->hdcp; > > > > > > @@ -218,16 +161,26 @@ int intel_hdcp2_capable(struct intel_connector > > > *connector, bool *capable) > > > } > > > mutex_unlock(&dev_priv->display.hdcp.comp_mutex); > > > > > > - /* Sink's capability for HDCP2.2 */ > > > - return hdcp->shim->hdcp_2_2_capable(dig_port, capable); > > > > Did you miss adding the drm hdcp helper here to check sink capability > > > Hey, > As the flow change and the protocol was split away from the full > implementation, the function here only checks if the driver supports > it. the call to sync happens in the helper. Okay got it, > > > + return 0; > > > } > > > > > > -static bool intel_hdcp_in_use(struct drm_i915_private *dev_priv, > > > - enum transcoder cpu_transcoder, enum port > > > port) > > > +int intel_hdcp1_check_link(struct drm_connector *drm_connector) > > > { > > > - return intel_de_read(dev_priv, > > > - HDCP_STATUS(dev_priv, cpu_transcoder, port)) & > > > - HDCP_STATUS_ENC; > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > + u32 val; > > > + > > > + val = intel_de_read(dev_priv, > > > + HDCP_STATUS(dev_priv, cpu_transcoder, port)); > > > + > > > + if (val & HDCP_STATUS_ENC) > > > + return 0; > > > + > > > + return -EINVAL; > > > } > > > > > > static bool intel_hdcp2_in_use(struct drm_i915_private *dev_priv, > > > @@ -238,27 +191,6 @@ static bool intel_hdcp2_in_use(struct > > > drm_i915_private *dev_priv, > > > LINK_ENCRYPTION_STATUS; > > > } > > > > > > -static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *dig_port, > > > - const struct intel_hdcp_shim *shim) > > > -{ > > > - int ret, read_ret; > > > - bool ksv_ready; > > > - > > > - /* Poll for ksv list ready (spec says max time allowed is 5s) */ > > > - ret = __wait_for(read_ret = shim->read_ksv_ready(dig_port, > > > - &ksv_ready), > > > - read_ret || ksv_ready, 5 * 1000 * 1000, 1000, > > > - 100 * 1000); > > > - if (ret) > > > - return ret; > > > - if (read_ret) > > > - return read_ret; > > > - if (!ksv_ready) > > > - return -ETIMEDOUT; > > > - > > > - return 0; > > > -} > > > - > > > static bool hdcp_key_loadable(struct drm_i915_private *dev_priv) > > > { > > > enum i915_power_well_id id; > > > @@ -294,11 +226,18 @@ static void intel_hdcp_clear_keys(struct > > > drm_i915_private *dev_priv) > > > HDCP_KEY_LOAD_DONE | HDCP_KEY_LOAD_STATUS | > > > HDCP_FUSE_IN_PROGRESS | HDCP_FUSE_ERROR | HDCP_FUSE_DONE); > > > } > > > > > > -static int intel_hdcp_load_keys(struct drm_i915_private *dev_priv) > > > +int intel_hdcp_load_keys(struct drm_connector *drm_connector) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > int ret; > > > u32 val; > > > > > > + if (!hdcp_key_loadable(dev_priv)) { > > > + drm_err(&dev_priv->drm, "HDCP key Load is not > > > possible\n"); > > > + return -ENXIO; > > > + } > > > + > > > val = intel_de_read(dev_priv, HDCP_KEY_STATUS); > > > if ((val & HDCP_KEY_LOAD_DONE) && (val & > > > HDCP_KEY_LOAD_STATUS)) > > > return 0; > > > @@ -308,8 +247,11 @@ static int intel_hdcp_load_keys(struct > > > drm_i915_private *dev_priv) > > > * out of reset. So if Key is not already loaded, its an error state. > > > */ > > > if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) > > > - if (!(intel_de_read(dev_priv, HDCP_KEY_STATUS) & > > > HDCP_KEY_LOAD_DONE)) > > > - return -ENXIO; > > > + if (!(intel_de_read(dev_priv, HDCP_KEY_STATUS) & > > > + HDCP_KEY_LOAD_DONE)) { > > > + ret = -ENXIO; > > > + goto err; > > > + } > > > > > > /* > > > * Initiate loading the HDCP key from fuses. > > > @@ -325,7 +267,7 @@ static int intel_hdcp_load_keys(struct > > > drm_i915_private *dev_priv) > > > drm_err(&dev_priv->drm, > > > "Failed to initiate HDCP key load (%d)\n", > > > ret); > > > - return ret; > > > + goto err; > > > } > > > } else { > > > intel_de_write(dev_priv, HDCP_KEY_CONF, > > > HDCP_KEY_LOAD_TRIGGER); > > > @@ -335,15 +277,21 @@ static int intel_hdcp_load_keys(struct > > > drm_i915_private *dev_priv) > > > ret = __intel_wait_for_register(&dev_priv->uncore, > > > HDCP_KEY_STATUS, > > > HDCP_KEY_LOAD_DONE, > > > HDCP_KEY_LOAD_DONE, > > > 10, 1, &val); > > > - if (ret) > > > - return ret; > > > - else if (!(val & HDCP_KEY_LOAD_STATUS)) > > > - return -ENXIO; > > > + if (ret) { > > > + goto err; > > > + } else if (!(val & HDCP_KEY_LOAD_STATUS)) { > > > + ret = -ENXIO; > > > + goto err; > > > + } > > > > > > /* Send Aksv over to PCH display for use in authentication */ > > > intel_de_write(dev_priv, HDCP_KEY_CONF, > > > HDCP_AKSV_SEND_TRIGGER); > > > > > > return 0; > > > + > > > +err: > > > + intel_hdcp_clear_keys(dev_priv); > > > + return ret; > > > } > > > > > > /* Returns updated SHA-1 index */ > > > @@ -399,25 +347,21 @@ u32 intel_hdcp_get_repeater_ctl(struct > > > drm_i915_private *dev_priv, > > > } > > > } > > > > > > -static > > > -int intel_hdcp_validate_v_prime(struct intel_connector *connector, > > > - const struct intel_hdcp_shim *shim, > > > - u8 *ksv_fifo, u8 num_downstream, u8 > > > *bstatus) > > > +int intel_hdcp1_store_ksv_fifo(struct drm_connector *drm_connector, > > > + u8 *ksv_fifo, u8 num_downstream, u8 *bstatus, > > > + u32 *v_prime) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > enum port port = dig_port->base.port; > > > - u32 vprime, sha_text, sha_leftovers, rep_ctl; > > > + u32 sha_text, sha_leftovers, rep_ctl; > > > int ret, i, j, sha_idx; > > > > > > /* Process V' values from the receiver */ > > > - for (i = 0; i < DRM_HDCP_V_PRIME_NUM_PARTS; i++) { > > > - ret = shim->read_v_prime_part(dig_port, i, &vprime); > > > - if (ret) > > > - return ret; > > > - intel_de_write(dev_priv, HDCP_SHA_V_PRIME(i), vprime); > > > - } > > > + for (i = 0; i < DRM_HDCP_V_PRIME_NUM_PARTS; i++) > > > + intel_de_write(dev_priv, HDCP_SHA_V_PRIME(i), > > > v_prime[i]); > > > > > > /* > > > * We need to write the concatenation of all device KSVs, BINFO (DP) > > > || > > > @@ -642,131 +586,38 @@ int intel_hdcp_validate_v_prime(struct > > > intel_connector *connector, > > > return 0; > > > } > > > > > > -/* Implements Part 2 of the HDCP authorization procedure */ > > > -static > > > -int intel_hdcp_auth_downstream(struct intel_connector *connector) > > > +int intel_hdcp1_store_receiver_info(struct drm_connector > > > *drm_connector, > > > + u32 *ksv, u32 status, u8 caps, > > > + bool repeater_present) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - const struct intel_hdcp_shim *shim = connector->hdcp.shim; > > > - u8 bstatus[2], num_downstream, *ksv_fifo; > > > - int ret, i, tries = 3; > > > - > > > - ret = intel_hdcp_poll_ksv_fifo(dig_port, shim); > > > - if (ret) { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "KSV list failed to become ready (%d)\n", ret); > > > - return ret; > > > - } > > > - > > > - ret = shim->read_bstatus(dig_port, bstatus); > > > - if (ret) > > > - return ret; > > > - > > > - if (DRM_HDCP_MAX_DEVICE_EXCEEDED(bstatus[0]) || > > > - DRM_HDCP_MAX_CASCADE_EXCEEDED(bstatus[1])) { > > > - drm_dbg_kms(&dev_priv->drm, "Max Topology Limit > > > Exceeded\n"); > > > - return -EPERM; > > > - } > > > - > > > - /* > > > - * When repeater reports 0 device count, HDCP1.4 spec allows > > > disabling > > > - * the HDCP encryption. That implies that repeater can't have its own > > > - * display. As there is no consumption of encrypted content in the > > > - * repeater with 0 downstream devices, we are failing the > > > - * authentication. > > > - */ > > > - num_downstream = DRM_HDCP_NUM_DOWNSTREAM(bstatus[0]); > > > - if (num_downstream == 0) { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "Repeater with zero downstream devices\n"); > > > - return -EINVAL; > > > - } > > > - > > > - ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, > > > GFP_KERNEL); > > > - if (!ksv_fifo) { > > > - drm_dbg_kms(&dev_priv->drm, "Out of mem: ksv_fifo\n"); > > > - return -ENOMEM; > > > - } > > > - > > > - ret = shim->read_ksv_fifo(dig_port, num_downstream, ksv_fifo); > > > - if (ret) > > > - goto err; > > > - > > > - if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm, ksv_fifo, > > > - num_downstream) > 0) { > > > - drm_err(&dev_priv->drm, "Revoked Ksv(s) in ksv_fifo\n"); > > > - ret = -EPERM; > > > - goto err; > > > - } > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > > > > - /* > > > - * When V prime mismatches, DP Spec mandates re-read of > > > - * V prime atleast twice. > > > - */ > > > - for (i = 0; i < tries; i++) { > > > - ret = intel_hdcp_validate_v_prime(connector, shim, > > > - ksv_fifo, num_downstream, > > > - bstatus); > > > - if (!ret) > > > - break; > > > - } > > > + intel_de_write(dev_priv, HDCP_BKSVLO(dev_priv, cpu_transcoder, > > > port), > > > + ksv[0]); > > > + intel_de_write(dev_priv, HDCP_BKSVHI(dev_priv, cpu_transcoder, > > > port), > > > + ksv[1]); > > > > > > - if (i == tries) { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "V Prime validation failed.(%d)\n", ret); > > > - goto err; > > > - } > > > + if (repeater_present) > > > + intel_de_write(dev_priv, HDCP_REP_CTL, > > > + intel_hdcp_get_repeater_ctl( > > > + dev_priv, cpu_transcoder, port)); > > > > > > - drm_dbg_kms(&dev_priv->drm, "HDCP is enabled (%d downstream > > > devices)\n", > > > - num_downstream); > > > - ret = 0; > > > -err: > > > - kfree(ksv_fifo); > > > - return ret; > > > + return 0; > > > } > > > > > > -/* Implements Part 1 of the HDCP authorization procedure */ > > > -static int intel_hdcp_auth(struct intel_connector *connector) > > > +int intel_hdcp1_read_an(struct drm_connector *drm_connector, > > > + struct drm_hdcp_an *an) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - const struct intel_hdcp_shim *shim = hdcp->shim; > > > enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > enum port port = dig_port->base.port; > > > - unsigned long r0_prime_gen_start; > > > - int ret, i, tries = 2; > > > - union { > > > - u32 reg[2]; > > > - u8 shim[DRM_HDCP_AN_LEN]; > > > - } an; > > > - union { > > > - u32 reg[2]; > > > - u8 shim[DRM_HDCP_KSV_LEN]; > > > - } bksv; > > > - union { > > > - u32 reg; > > > - u8 shim[DRM_HDCP_RI_LEN]; > > > - } ri; > > > - bool repeater_present, hdcp_capable; > > > - > > > - /* > > > - * Detects whether the display is HDCP capable. Although we check > > > for > > > - * valid Bksv below, the HDCP over DP spec requires that we check > > > - * 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 (ret) > > > - return ret; > > > - if (!hdcp_capable) { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "Panel is not HDCP capable\n"); > > > - return -EINVAL; > > > - } > > > - } > > > + int i; > > > > > > /* Initialize An with 2 random values and acquire it */ > > > for (i = 0; i < 2; i++) > > > @@ -784,92 +635,81 @@ static int intel_hdcp_auth(struct > intel_connector > > > *connector) > > > return -ETIMEDOUT; > > > } > > > > > > - an.reg[0] = intel_de_read(dev_priv, > > > - HDCP_ANLO(dev_priv, cpu_transcoder, > > > port)); > > > - an.reg[1] = intel_de_read(dev_priv, > > > - HDCP_ANHI(dev_priv, cpu_transcoder, > > > port)); > > > - ret = shim->write_an_aksv(dig_port, an.shim); > > > - if (ret) > > > - return ret; > > > + an->words[0] = intel_de_read(dev_priv, > > > + HDCP_ANLO(dev_priv, cpu_transcoder, > > > port)); > > > + an->words[1] = intel_de_read(dev_priv, > > > + HDCP_ANHI(dev_priv, cpu_transcoder, > > > port)); > > > > > > - r0_prime_gen_start = jiffies; > > > - > > > - memset(&bksv, 0, sizeof(bksv)); > > > - > > > - ret = intel_hdcp_read_valid_bksv(dig_port, shim, bksv.shim); > > > - if (ret < 0) > > > - return ret; > > > - > > > - if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm, bksv.shim, 1) > > > > 0) { > > > - drm_err(&dev_priv->drm, "BKSV is revoked\n"); > > > - return -EPERM; > > > - } > > > - > > > - intel_de_write(dev_priv, HDCP_BKSVLO(dev_priv, cpu_transcoder, > > > port), > > > - bksv.reg[0]); > > > - intel_de_write(dev_priv, HDCP_BKSVHI(dev_priv, cpu_transcoder, > > > port), > > > - bksv.reg[1]); > > > - > > > - ret = shim->repeater_present(dig_port, &repeater_present); > > > - if (ret) > > > - return ret; > > > - if (repeater_present) > > > - intel_de_write(dev_priv, HDCP_REP_CTL, > > > - intel_hdcp_get_repeater_ctl(dev_priv, > > > cpu_transcoder, port)); > > > + return 0; > > > +} > > > > > > - ret = shim->toggle_signalling(dig_port, cpu_transcoder, true); > > > - if (ret) > > > - return ret; > > > +int intel_hdcp1_enable_encryption(struct drm_connector > > > *drm_connector) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > > > > intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, > > > port), > > > HDCP_CONF_AUTH_AND_ENC); > > > > > > + return 0; > > > +} > > > + > > > +int intel_hdcp1_wait_for_r0(struct drm_connector *drm_connector) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > + > > > /* Wait for R0 ready */ > > > - if (wait_for(intel_de_read(dev_priv, HDCP_STATUS(dev_priv, > > > cpu_transcoder, port)) & > > > - (HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), 1)) { > > > + if (wait_for((intel_de_read(dev_priv, > > > + HDCP_STATUS(dev_priv, cpu_transcoder, > > > + port))) & > > > + (HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), > > > + 1)) { > > > > Alignment here seem wrong > > > > > drm_err(&dev_priv->drm, "Timed out waiting for R0 > > > ready\n"); > > > return -ETIMEDOUT; > > > } > > > > > > - /* > > > - * Wait for R0' to become available. The spec says 100ms from Aksv, > > > but > > > - * some monitors can take longer than this. We'll set the timeout at > > > - * 300ms just to be sure. > > > - * > > > - * On DP, there's an R0_READY bit available but no such bit > > > - * exists on HDMI. Since the upper-bound is the same, we'll just do > > > - * the stupid thing instead of polling on one and not the other. > > > - */ > > > - wait_remaining_ms_from_jiffies(r0_prime_gen_start, 300); > > > - > > > - tries = 3; > > > + return 0; > > > +} > > > > > > - /* > > > - * DP HDCP Spec mandates the two more reattempt to read R0, > > > incase > > > - * of R0 mismatch. > > > - */ > > > - for (i = 0; i < tries; i++) { > > > - ri.reg = 0; > > > - ret = shim->read_ri_prime(dig_port, ri.shim); > > > - if (ret) > > > - return ret; > > > - intel_de_write(dev_priv, > > > - HDCP_RPRIME(dev_priv, cpu_transcoder, port), > > > - ri.reg); > > > +int intel_hdcp1_match_ri(struct drm_connector *drm_connector, u32 > > > ri_prime) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > > > > - /* Wait for Ri prime match */ > > > - if (!wait_for(intel_de_read(dev_priv, > > > HDCP_STATUS(dev_priv, cpu_transcoder, port)) & > > > - (HDCP_STATUS_RI_MATCH | > > > HDCP_STATUS_ENC), 1)) > > > - break; > > > - } > > > + intel_de_write(dev_priv, HDCP_RPRIME(dev_priv, cpu_transcoder, > > > port), > > > + ri_prime); > > > > > > - if (i == tries) { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "Timed out waiting for Ri prime match (%x)\n", > > > - intel_de_read(dev_priv, HDCP_STATUS(dev_priv, > > > - cpu_transcoder, port))); > > > + /* Wait for Ri prime match */ > > > + if (wait_for(intel_de_read(dev_priv, > > > + HDCP_STATUS(dev_priv, cpu_transcoder, > > > port)) & > > > + (HDCP_STATUS_RI_MATCH | > > > HDCP_STATUS_ENC), > > > + 1)) > > > return -ETIMEDOUT; > > > - } > > > + > > > + return 0; > > > +} > > > + > > > +int intel_hdcp1_post_encryption(struct drm_connector > *drm_connector) > > > +{ > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + enum port port = dig_port->base.port; > > > > > > /* Wait for encryption confirmation */ > > > if (intel_de_wait_for_set(dev_priv, > > > @@ -880,56 +720,22 @@ static int intel_hdcp_auth(struct > intel_connector > > > *connector) > > > return -ETIMEDOUT; > > > } > > > > > > - /* DP MST Auth Part 1 Step 2.a and Step 2.b */ > > > - if (shim->stream_encryption) { > > > - ret = shim->stream_encryption(connector, true); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "[%s:%d] Failed to enable > > > HDCP 1.4 stream enc\n", > > > - connector->base.name, connector- > > > >base.base.id); > > > - return ret; > > > - } > > > - drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 transcoder: %s > > > stream encrypted\n", > > > - transcoder_name(hdcp->stream_transcoder)); > > > - } > > > - > > > - if (repeater_present) > > > - return intel_hdcp_auth_downstream(connector); > > > - > > > - drm_dbg_kms(&dev_priv->drm, "HDCP is enabled (no repeater > > > present)\n"); > > > return 0; > > > } > > > > > > -static int _intel_hdcp_disable(struct intel_connector *connector) > > > +int intel_hdcp1_disable(struct drm_connector *drm_connector) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > struct intel_hdcp *hdcp = &connector->hdcp; > > > enum port port = dig_port->base.port; > > > enum transcoder cpu_transcoder = hdcp->cpu_transcoder; > > > u32 repeater_ctl; > > > - int ret; > > > > > > drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being > > > disabled...\n", > > > connector->base.name, connector->base.base.id); > > > > > > - if (hdcp->shim->stream_encryption) { > > > - ret = hdcp->shim->stream_encryption(connector, false); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "[%s:%d] Failed to disable > > > HDCP 1.4 stream enc\n", > > > - connector->base.name, connector- > > > >base.base.id); > > > - return ret; > > > - } > > > - drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 transcoder: %s > > > stream encryption disabled\n", > > > - transcoder_name(hdcp->stream_transcoder)); > > > - /* > > > - * If there are other connectors on this port using HDCP, > > > - * don't disable it until it disabled HDCP encryption for > > > - * all connectors in MST topology. > > > - */ > > > - if (dig_port->num_hdcp_streams > 0) > > > - return 0; > > > - } > > > - > > > hdcp->hdcp_encrypted = false; > > > intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, > > > port), 0); > > > if (intel_de_wait_for_clear(dev_priv, > > > @@ -945,190 +751,9 @@ static int _intel_hdcp_disable(struct > > > intel_connector *connector) > > > intel_de_write(dev_priv, HDCP_REP_CTL, > > > intel_de_read(dev_priv, HDCP_REP_CTL) & > > > ~repeater_ctl); > > > > > > - ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder, > > > false); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "Failed to disable HDCP > > > signalling\n"); > > > - return ret; > > > - } > > > - > > > - drm_dbg_kms(&dev_priv->drm, "HDCP is disabled\n"); > > > return 0; > > > } > > > > > > -static int _intel_hdcp_enable(struct intel_connector *connector) > > > -{ > > > - struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - int i, ret, tries = 3; > > > - > > > - drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being > > > enabled...\n", > > > - connector->base.name, connector->base.base.id); > > > - > > > - if (!hdcp_key_loadable(dev_priv)) { > > > - drm_err(&dev_priv->drm, "HDCP key Load is not > > > possible\n"); > > > - return -ENXIO; > > > - } > > > - > > > - for (i = 0; i < KEY_LOAD_TRIES; i++) { > > > - ret = intel_hdcp_load_keys(dev_priv); > > > - if (!ret) > > > - break; > > > - intel_hdcp_clear_keys(dev_priv); > > > - } > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "Could not load HDCP keys, > > > (%d)\n", > > > - ret); > > > - return ret; > > > - } > > > - > > > - /* Incase of authentication failures, HDCP spec expects reauth. */ > > > - for (i = 0; i < tries; i++) { > > > - ret = intel_hdcp_auth(connector); > > > - if (!ret) { > > > - hdcp->hdcp_encrypted = true; > > > - return 0; > > > - } > > > - > > > - drm_dbg_kms(&dev_priv->drm, "HDCP Auth failure (%d)\n", > > > ret); > > > - > > > - /* Ensuring HDCP encryption and signalling are stopped. */ > > > - _intel_hdcp_disable(connector); > > > - } > > > - > > > - drm_dbg_kms(&dev_priv->drm, > > > - "HDCP authentication failed (%d tries/%d)\n", tries, ret); > > > - return ret; > > > -} > > > - > > > -static struct intel_connector *intel_hdcp_to_connector(struct intel_hdcp > > > *hdcp) > > > -{ > > > - return container_of(hdcp, struct intel_connector, hdcp); > > > -} > > > - > > > -static void intel_hdcp_update_value(struct intel_connector *connector, > > > - u64 value, bool update_property) > > > -{ > > > - struct drm_device *dev = connector->base.dev; > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - > > > - drm_WARN_ON(connector->base.dev, !mutex_is_locked(&hdcp- > > > >mutex)); > > > - > > > - if (hdcp->value == value) > > > - return; > > > - > > > - drm_WARN_ON(dev, !mutex_is_locked(&dig_port->hdcp_mutex)); > > > - > > > - if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED) { > > > - if (!drm_WARN_ON(dev, dig_port->num_hdcp_streams == > > > 0)) > > > - dig_port->num_hdcp_streams--; > > > - } else if (value == DRM_MODE_CONTENT_PROTECTION_ENABLED) { > > > - dig_port->num_hdcp_streams++; > > > - } > > > - > > > - hdcp->value = value; > > > - if (update_property) { > > > - drm_connector_get(&connector->base); > > > - schedule_work(&hdcp->prop_work); > > > - } > > > -} > > > - > > > -/* Implements Part 3 of the HDCP authorization procedure */ > > > -static int intel_hdcp_check_link(struct intel_connector *connector) > > > -{ > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - enum port port = dig_port->base.port; > > > - enum transcoder cpu_transcoder; > > > - int ret = 0; > > > - > > > - mutex_lock(&hdcp->mutex); > > > - mutex_lock(&dig_port->hdcp_mutex); > > > - > > > - cpu_transcoder = hdcp->cpu_transcoder; > > > - > > > - /* Check_link valid only when HDCP1.4 is enabled */ > > > - if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED > > > || > > > - !hdcp->hdcp_encrypted) { > > > - ret = -EINVAL; > > > - goto out; > > > - } > > > - > > > - if (drm_WARN_ON(&dev_priv->drm, > > > - !intel_hdcp_in_use(dev_priv, cpu_transcoder, > > > port))) { > > > - drm_err(&dev_priv->drm, > > > - "%s:%d HDCP link stopped encryption,%x\n", > > > - connector->base.name, connector->base.base.id, > > > - intel_de_read(dev_priv, HDCP_STATUS(dev_priv, > > > cpu_transcoder, port))); > > > - ret = -ENXIO; > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_DESIRED, > > > - true); > > > - goto out; > > > - } > > > - > > > - if (hdcp->shim->check_link(dig_port, connector)) { > > > - if (hdcp->value != > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_ENABLED, true); > > > - } > > > - goto out; > > > - } > > > - > > > - drm_dbg_kms(&dev_priv->drm, > > > - "[%s:%d] HDCP link failed, retrying authentication\n", > > > - connector->base.name, connector->base.base.id); > > > - > > > - ret = _intel_hdcp_disable(connector); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "Failed to disable hdcp (%d)\n", > > > ret); > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_DESIRED, > > > - true); > > > - goto out; > > > - } > > > - > > > - ret = _intel_hdcp_enable(connector); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, "Failed to enable hdcp (%d)\n", > > > ret); > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_DESIRED, > > > - true); > > > - goto out; > > > - } > > > - > > > -out: > > > - mutex_unlock(&dig_port->hdcp_mutex); > > > - mutex_unlock(&hdcp->mutex); > > > - return ret; > > > -} > > > - > > > -static void intel_hdcp_prop_work(struct work_struct *work) > > > -{ > > > - struct intel_hdcp *hdcp = container_of(work, struct intel_hdcp, > > > - prop_work); > > > - struct intel_connector *connector = intel_hdcp_to_connector(hdcp); > > > - struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - > > > - drm_modeset_lock(&dev_priv- > > > >drm.mode_config.connection_mutex, NULL); > > > - mutex_lock(&hdcp->mutex); > > > - > > > - /* > > > - * This worker is only used to flip between ENABLED/DESIRED. Either > > > of > > > - * those to UNDESIRED is handled by core. If value == UNDESIRED, > > > - * we're running just after hdcp has been disabled, so just exit > > > - */ > > > - if (hdcp->value != > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED) > > > - drm_hdcp_update_content_protection(&connector->base, > > > - hdcp->value); > > > - > > > - mutex_unlock(&hdcp->mutex); > > > - drm_modeset_unlock(&dev_priv- > > > >drm.mode_config.connection_mutex); > > > - > > > - drm_connector_put(&connector->base); > > > -} > > > - > > > bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port > > > port) > > > { > > > return RUNTIME_INFO(dev_priv)->has_hdcp && > > > @@ -1961,8 +1586,9 @@ static int > hdcp2_authenticate_and_encrypt(struct > > > intel_connector *connector) > > > return ret; > > > } > > > > > > -static int _intel_hdcp2_enable(struct intel_connector *connector) > > > +int intel_hdcp2_enable(struct drm_connector *drm_connector) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct drm_i915_private *i915 = to_i915(connector->base.dev); > > > struct intel_hdcp *hdcp = &connector->hdcp; > > > int ret; > > > @@ -2024,9 +1650,15 @@ _intel_hdcp2_disable(struct intel_connector > > > *connector, bool hdcp2_link_recovery > > > return ret; > > > } > > > > > > +int intel_hdcp2_disable(struct drm_connector *drm_connector) > > > +{ > > > + return _intel_hdcp2_disable(to_intel_connector(drm_connector), > > > false); > > > +} > > > + > > > /* Implements the Link Integrity Check for HDCP2.2 */ > > > -static int intel_hdcp2_check_link(struct intel_connector *connector) > > > +int intel_hdcp2_check_link(struct drm_connector *drm_connector) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > struct intel_hdcp *hdcp = &connector->hdcp; > > > @@ -2034,109 +1666,39 @@ static int intel_hdcp2_check_link(struct > > > intel_connector *connector) > > > enum transcoder cpu_transcoder; > > > int ret = 0; > > > > > > - mutex_lock(&hdcp->mutex); > > > - mutex_lock(&dig_port->hdcp_mutex); > > > cpu_transcoder = hdcp->cpu_transcoder; > > > > > > /* hdcp2_check_link is expected only when HDCP2.2 is Enabled */ > > > - if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED > > > || > > > - !hdcp->hdcp2_encrypted) { > > > - ret = -EINVAL; > > > - goto out; > > > - } > > > + if (!hdcp->hdcp2_encrypted) > > > + return -EINVAL; > > > > > > if (drm_WARN_ON(&dev_priv->drm, > > > !intel_hdcp2_in_use(dev_priv, cpu_transcoder, > > > port))) { > > > drm_err(&dev_priv->drm, > > > "HDCP2.2 link stopped the encryption, %x\n", > > > intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, > > > cpu_transcoder, port))); > > > - ret = -ENXIO; > > > - _intel_hdcp2_disable(connector, true); > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_DESIRED, > > > - true); > > > - goto out; > > > + return -ENXIO; > > > } > > > > > > ret = hdcp->shim->check_2_2_link(dig_port, connector); > > > - if (ret == HDCP_LINK_PROTECTED) { > > > - if (hdcp->value != > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_ENABLED, > > > - true); > > > - } > > > - goto out; > > > - } > > > + if (ret == HDCP_LINK_PROTECTED) > > > + return 0; > > > > > > if (ret == HDCP_TOPOLOGY_CHANGE) { > > > - if (hdcp->value == > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED) > > > - goto out; > > > - > > > drm_dbg_kms(&dev_priv->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(&dev_priv->drm, > > > - "[%s:%d] Repeater topology auth failed.(%d)\n", > > > - connector->base.name, connector->base.base.id, > > > - ret); > > > - } else { > > > - drm_dbg_kms(&dev_priv->drm, > > > - "[%s:%d] HDCP2.2 link failed, retrying auth\n", > > > - connector->base.name, connector->base.base.id); > > > - } > > > - > > > - ret = _intel_hdcp2_disable(connector, true); > > > - if (ret) { > > > - drm_err(&dev_priv->drm, > > > - "[%s:%d] Failed to disable 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; > > > - } > > > + if (!ret) > > > + return 0; > > > > > > - ret = _intel_hdcp2_enable(connector); > > > - if (ret) { > > > drm_dbg_kms(&dev_priv->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; > > > + "[%s:%d] Repeater topology auth failed.(%d)\n", > > > + connector->base.name, connector->base.base.id, > > > ret); > > > } > > > > > > -out: > > > - mutex_unlock(&dig_port->hdcp_mutex); > > > - mutex_unlock(&hdcp->mutex); > > > return ret; > > > } > > > > Wouldn't it be better if we used that value in drm_hdcp_helper_data > rather than getting rid of all these checks > > As they are needed same thing for other places where the checks are > removed because value isn't present in > > Intel_hdcp structure > > > I'm not 100% sure I get what you're referring to, but basically the > work has been split between the helper and the driver. the intel > specific protocol is what remains in the driver. Everything else is > handled in the helper >From what I can see all the checks concerning hdcp->value have been removed and not been Taken care In any of the drm_hdcp_helper function for hdcp2_check_link we can use The value field here which is store in drm_hdcp_helper_data > > > > > > -static void intel_hdcp_check_work(struct work_struct *work) > > > -{ > > > - struct intel_hdcp *hdcp = container_of(to_delayed_work(work), > > > - struct intel_hdcp, > > > - check_work); > > > - struct intel_connector *connector = intel_hdcp_to_connector(hdcp); > > > - > > > - if (drm_connector_is_unregistered(&connector->base)) > > > - return; > > > - > > > - if (!intel_hdcp2_check_link(connector)) > > > - schedule_delayed_work(&hdcp->check_work, > > > - DRM_HDCP2_CHECK_PERIOD_MS); > > > - else if (!intel_hdcp_check_link(connector)) > > > - schedule_delayed_work(&hdcp->check_work, > > > - DRM_HDCP_CHECK_PERIOD_MS); > > > -} > > > - > > > static int i915_hdcp_component_bind(struct device *i915_kdev, > > > struct device *mei_kdev, void *data) > > > { > > > @@ -2189,22 +1751,28 @@ static enum mei_fw_tc > > > intel_get_mei_fw_tc(enum transcoder cpu_transcoder) > > > } > > > } > > > > > > -static int > > > -_intel_hdcp_setup(struct intel_connector *connector, > > > - const struct intel_crtc_state *pipe_config, u8 content_type) > > > +int intel_hdcp_setup(struct drm_connector *connector, > > > + struct drm_atomic_state *state) > > > { > > > - struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > + struct drm_i915_private *dev_priv = to_i915(connector->dev); > > > + struct intel_connector *intel_connector = > > > to_intel_connector(connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(intel_connector); > > > + struct drm_connector_state *conn_state; > > > + struct drm_crtc_state *crtc_state; > > > + struct intel_crtc_state *pipe_config; > > > + struct intel_hdcp *hdcp = &intel_connector->hdcp; > > > int ret = 0; > > > > > > - if (!connector->encoder) { > > > + if (!intel_connector->encoder) { > > > drm_err(&dev_priv->drm, "[%s:%d] encoder is not > > > initialized\n", > > > - connector->base.name, connector->base.base.id); > > > + connector->name, connector->base.id); > > > return -ENODEV; > > > } > > > > > > - hdcp->content_type = content_type; > > > + conn_state = drm_atomic_get_new_connector_state(state, > > > connector); > > > + crtc_state = drm_atomic_get_new_crtc_state(state, conn_state- > > > >crtc); > > > + pipe_config = to_intel_crtc_state(crtc_state); > > > > > > if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST)) { > > > hdcp->cpu_transcoder = pipe_config- > > > >mst_master_transcoder; > > > @@ -2321,7 +1889,6 @@ int intel_hdcp_init(struct intel_connector > > > *connector, > > > { > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > struct intel_hdcp *hdcp = &connector->hdcp; > > > - int ret; > > > > > > if (!shim) > > > return -EINVAL; > > > @@ -2329,174 +1896,12 @@ int intel_hdcp_init(struct intel_connector > > > *connector, > > > if (is_hdcp2_supported(dev_priv)) > > > intel_hdcp2_init(connector, dig_port, shim); > > > > > > - ret = > > > - drm_connector_attach_content_protection_property(&connector- > > > >base, > > > - hdcp- > > > >hdcp2_supported); > > > - if (ret) { > > > - hdcp->hdcp2_supported = false; > > > - kfree(dig_port->hdcp_port_data.streams); > > > - return ret; > > > - } > > > - > > > hdcp->shim = shim; > > > - mutex_init(&hdcp->mutex); > > > > I don't think removing mutex is a good idea > > > The mutex is just moved to the drm hdpc helper. Is there any race > condition that you might be missing? > > Regards, > > Suraj Kandpal > > > - INIT_DELAYED_WORK(&hdcp->check_work, > > > intel_hdcp_check_work); > > > - INIT_WORK(&hdcp->prop_work, intel_hdcp_prop_work); > > > init_waitqueue_head(&hdcp->cp_irq_queue); > > > > > > return 0; > > > } > > > > > > -int intel_hdcp_enable(struct intel_connector *connector, > > > - const struct intel_crtc_state *pipe_config, u8 > > > content_type) > > > -{ > > > - struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - unsigned long check_link_interval = > > > DRM_HDCP_CHECK_PERIOD_MS; > > > - bool capable; > > > - int ret = -EINVAL; > > > - > > > - if (!hdcp->shim) > > > - return -ENOENT; > > > - > > > - mutex_lock(&hdcp->mutex); > > > - mutex_lock(&dig_port->hdcp_mutex); > > > - drm_WARN_ON(&dev_priv->drm, > > > - hdcp->value == > > > DRM_MODE_CONTENT_PROTECTION_ENABLED); > > > - > > > - ret = _intel_hdcp_setup(connector, pipe_config, content_type); > > > - if (ret) > > > - goto out; > > > - > > > - /* > > > - * 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. > > > - */ > > > - ret = intel_hdcp2_capable(connector, &capable); > > > - if (capable) { > > > - ret = _intel_hdcp2_enable(connector); > > > - if (!ret) { > > > - check_link_interval = > > > DRM_HDCP2_CHECK_PERIOD_MS; > > > - goto out; > > > - } > > > - } > > > - > > > - /* > > > - * When HDCP2.2 fails and Content Type is not Type1, HDCP1.4 will > > > - * be attempted. > > > - */ > > > - ret = intel_hdcp_capable(connector, &capable); > > > - if (ret) > > > - goto out; > > > - > > > - if (capable && hdcp->content_type != > > > DRM_MODE_HDCP_CONTENT_TYPE1) > > > - ret = _intel_hdcp_enable(connector); > > > - > > > -out: > > > - if (!ret) { > > > - schedule_delayed_work(&hdcp->check_work, > > > check_link_interval); > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_ENABLED, > > > - true); > > > - } > > > - > > > - mutex_unlock(&dig_port->hdcp_mutex); > > > - mutex_unlock(&hdcp->mutex); > > > - return ret; > > > -} > > > - > > > -int intel_hdcp_disable(struct intel_connector *connector) > > > -{ > > > - struct intel_digital_port *dig_port = > > > intel_attached_dig_port(connector); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - int ret = 0; > > > - > > > - if (!hdcp->shim) > > > - return -ENOENT; > > > - > > > - mutex_lock(&hdcp->mutex); > > > - mutex_lock(&dig_port->hdcp_mutex); > > > - > > > - if (hdcp->value == > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED) > > > - goto out; > > > - > > > - intel_hdcp_update_value(connector, > > > - > > > DRM_MODE_CONTENT_PROTECTION_UNDESIRED, false); > > > - if (hdcp->hdcp2_encrypted) > > > - ret = _intel_hdcp2_disable(connector, false); > > > - else if (hdcp->hdcp_encrypted) > > > - ret = _intel_hdcp_disable(connector); > > > - > > > -out: > > > - mutex_unlock(&dig_port->hdcp_mutex); > > > - mutex_unlock(&hdcp->mutex); > > > - cancel_delayed_work_sync(&hdcp->check_work); > > > - return ret; > > > -} > > > - > > > -void intel_hdcp_update_pipe(struct intel_atomic_state *state, > > > - struct intel_encoder *encoder, > > > - const struct intel_crtc_state *crtc_state, > > > - const struct drm_connector_state *conn_state) > > > -{ > > > - struct intel_connector *connector = > > > - to_intel_connector(conn_state->connector); > > > - struct intel_hdcp *hdcp = &connector->hdcp; > > > - bool content_protection_type_changed, desired_and_not_enabled > > > = false; > > > - > > > - if (!connector->hdcp.shim) > > > - return; > > > - > > > - content_protection_type_changed = > > > - (conn_state->hdcp_content_type != hdcp->content_type > > > && > > > - conn_state->content_protection != > > > - DRM_MODE_CONTENT_PROTECTION_UNDESIRED); > > > - > > > - /* > > > - * During the HDCP encryption session if Type change is requested, > > > - * disable the HDCP and reenable it with new TYPE value. > > > - */ > > > - if (conn_state->content_protection == > > > - DRM_MODE_CONTENT_PROTECTION_UNDESIRED || > > > - content_protection_type_changed) > > > - intel_hdcp_disable(connector); > > > - > > > - /* > > > - * Mark the hdcp state as DESIRED after the hdcp disable of type > > > - * change procedure. > > > - */ > > > - if (content_protection_type_changed) { > > > - mutex_lock(&hdcp->mutex); > > > - hdcp->value = > > > DRM_MODE_CONTENT_PROTECTION_DESIRED; > > > - drm_connector_get(&connector->base); > > > - schedule_work(&hdcp->prop_work); > > > - mutex_unlock(&hdcp->mutex); > > > - } > > > - > > > - if (conn_state->content_protection == > > > - DRM_MODE_CONTENT_PROTECTION_DESIRED) { > > > - mutex_lock(&hdcp->mutex); > > > - /* Avoid enabling hdcp, if it already ENABLED */ > > > - desired_and_not_enabled = > > > - hdcp->value != > > > DRM_MODE_CONTENT_PROTECTION_ENABLED; > > > - mutex_unlock(&hdcp->mutex); > > > - /* > > > - * If HDCP already ENABLED and CP property is DESIRED, > > > schedule > > > - * prop_work to update correct CP property to user space. > > > - */ > > > - if (!desired_and_not_enabled && > > > !content_protection_type_changed) { > > > - drm_connector_get(&connector->base); > > > - schedule_work(&hdcp->prop_work); > > > - } > > > - } > > > - > > > - if (desired_and_not_enabled || content_protection_type_changed) > > > - intel_hdcp_enable(connector, > > > - crtc_state, > > > - (u8)conn_state->hdcp_content_type); > > > -} > > > - > > > void intel_hdcp_component_fini(struct drm_i915_private *dev_priv) > > > { > > > mutex_lock(&dev_priv->display.hdcp.comp_mutex); > > > @@ -2518,33 +1923,8 @@ void intel_hdcp_cleanup(struct > intel_connector > > > *connector) > > > if (!hdcp->shim) > > > return; > > > > > > - /* > > > - * If the connector is registered, it's possible userspace could kick > > > - * off another HDCP enable, which would re-spawn the workers. > > > - */ > > > - drm_WARN_ON(connector->base.dev, > > > - connector->base.registration_state == > > > DRM_CONNECTOR_REGISTERED); > > > - > > > - /* > > > - * Now that the connector is not registered, check_work won't be > > > run, > > > - * but cancel any outstanding instances of it > > > - */ > > > - cancel_delayed_work_sync(&hdcp->check_work); > > > - > > > - /* > > > - * We don't cancel prop_work in the same way as check_work since it > > > - * requires connection_mutex which could be held while calling this > > > - * function. Instead, we rely on the connector references grabbed > > > before > > > - * scheduling prop_work to ensure the connector is alive when > > > prop_work > > > - * is run. So if we're in the destroy path (which is where this > > > - * function should be called), we're "guaranteed" that prop_work is > > > not > > > - * active (tl;dr This Should Never Happen). > > > - */ > > > - drm_WARN_ON(connector->base.dev, work_pending(&hdcp- > > > >prop_work)); > > > - > > > - mutex_lock(&hdcp->mutex); > > > + drm_hdcp_helper_destroy(connector->hdcp_helper_data); > > > hdcp->shim = NULL; > > > - mutex_unlock(&hdcp->mutex); > > > } > > > > > > /* Handles the CP_IRQ raised from the DP HDCP sink */ > > > @@ -2558,5 +1938,5 @@ void intel_hdcp_handle_cp_irq(struct > > > intel_connector *connector) > > > atomic_inc(&connector->hdcp.cp_irq_count); > > > wake_up_all(&connector->hdcp.cp_irq_queue); > > > > > > - schedule_delayed_work(&hdcp->check_work, 0); > > > + drm_hdcp_helper_schedule_hdcp_check(connector- > > > >hdcp_helper_data); > > > } > > > diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h > > > b/drivers/gpu/drm/i915/display/intel_hdcp.h > > > index f06f6e5a2b1a..49b9d79eb30a 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_hdcp.h > > > +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h > > > @@ -10,8 +10,10 @@ > > > > > > #define HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS 50 > > > > > > +struct drm_atomic_state; > > > struct drm_connector; > > > struct drm_connector_state; > > > +struct drm_hdcp_an; > > > struct drm_i915_private; > > > struct intel_atomic_state; > > > struct intel_connector; > > > @@ -25,16 +27,29 @@ enum transcoder; > > > int intel_hdcp_init(struct intel_connector *connector, > > > struct intel_digital_port *dig_port, > > > const struct intel_hdcp_shim *hdcp_shim); > > > -int intel_hdcp_enable(struct intel_connector *connector, > > > - const struct intel_crtc_state *pipe_config, u8 > > > content_type); > > > -int intel_hdcp_disable(struct intel_connector *connector); > > > -void intel_hdcp_update_pipe(struct intel_atomic_state *state, > > > - struct intel_encoder *encoder, > > > - const struct intel_crtc_state *crtc_state, > > > - const struct drm_connector_state *conn_state); > > > +int intel_hdcp_setup(struct drm_connector *drm_connector, > > > + struct drm_atomic_state *state); > > > +int intel_hdcp_load_keys(struct drm_connector *drm_connector); > > > bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port > > > port); > > > int intel_hdcp_capable(struct intel_connector *connector, bool > *capable); > > > -int intel_hdcp2_capable(struct intel_connector *connector, bool > *capable); > > > +int intel_hdcp2_capable(struct drm_connector *drm_connector, bool > > > *capable); > > > +int intel_hdcp2_enable(struct drm_connector *drm_connector); > > > +int intel_hdcp2_disable(struct drm_connector *drm_connector); > > > +int intel_hdcp2_check_link(struct drm_connector *drm_connector); > > > +int intel_hdcp1_store_receiver_info(struct drm_connector > > > *drm_connector, > > > + u32 *ksv, u32 status, u8 caps, > > > + bool repeater_present); > > > +int intel_hdcp1_read_an(struct drm_connector *drm_connector, > > > + struct drm_hdcp_an *an); > > > +int intel_hdcp1_enable_encryption(struct drm_connector > > > *drm_connector); > > > +int intel_hdcp1_wait_for_r0(struct drm_connector *drm_connector); > > > +int intel_hdcp1_match_ri(struct drm_connector *drm_connector, u32 > > > ri_prime); > > > +int intel_hdcp1_post_encryption(struct drm_connector > *drm_connector); > > > +int intel_hdcp1_store_ksv_fifo(struct drm_connector *drm_connector, > > > + u8 *ksv_fifo, u8 num_downstream, u8 *bstatus, > > > + u32 *v_prime); > > > +int intel_hdcp1_check_link(struct drm_connector *drm_connector); > > > +int intel_hdcp1_disable(struct drm_connector *drm_connector); > > > void intel_hdcp_component_init(struct drm_i915_private *dev_priv); > > > void intel_hdcp_component_fini(struct drm_i915_private *dev_priv); > > > void intel_hdcp_cleanup(struct intel_connector *connector); > > > diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c > > > b/drivers/gpu/drm/i915/display/intel_hdmi.c > > > index 7816b2a33fee..c33cfedb2e19 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c > > > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c > > > @@ -1324,17 +1324,24 @@ static int intel_hdmi_hdcp_write(struct > > > intel_digital_port *dig_port, > > > return ret; > > > } > > > > > > -static > > > -int intel_hdmi_hdcp_write_an_aksv(struct intel_digital_port *dig_port, > > > - u8 *an) > > > +static int intel_hdmi_hdcp1_send_an_aksv(struct drm_connector > > > *drm_connector) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > struct intel_hdmi *hdmi = &dig_port->hdmi; > > > struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915, > > > hdmi->ddc_bus); > > > + struct drm_hdcp_an an; > > > int ret; > > > > > > - ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, an, > > > + /* Output An first, that's easy */ > > > + ret = intel_hdcp1_read_an(drm_connector, &an); > > > + if (ret) > > > + return ret; > > > + > > > + ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, > > > an.bytes, > > > DRM_HDCP_AN_LEN); > > > if (ret) { > > > drm_dbg_kms(&i915->drm, "Write An over DDC failed > > > (%d)\n", > > > @@ -1350,120 +1357,6 @@ int intel_hdmi_hdcp_write_an_aksv(struct > > > intel_digital_port *dig_port, > > > return 0; > > > } > > > > > > -static int intel_hdmi_hdcp_read_bksv(struct intel_digital_port *dig_port, > > > - u8 *bksv) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - > > > - int ret; > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BKSV, bksv, > > > - DRM_HDCP_KSV_LEN); > > > - if (ret) > > > - drm_dbg_kms(&i915->drm, "Read Bksv over DDC failed > > > (%d)\n", > > > - ret); > > > - return ret; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_read_bstatus(struct intel_digital_port *dig_port, > > > - u8 *bstatus) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - > > > - int ret; > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BSTATUS, > > > - bstatus, DRM_HDCP_BSTATUS_LEN); > > > - if (ret) > > > - drm_dbg_kms(&i915->drm, "Read bstatus over DDC failed > > > (%d)\n", > > > - ret); > > > - return ret; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_repeater_present(struct intel_digital_port > *dig_port, > > > - bool *repeater_present) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int ret; > > > - u8 val; > > > - > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, > > > &val, 1); > > > - if (ret) { > > > - drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed > > > (%d)\n", > > > - ret); > > > - return ret; > > > - } > > > - *repeater_present = val & > > > DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT; > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_read_ri_prime(struct intel_digital_port *dig_port, > > > - u8 *ri_prime) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - > > > - int ret; > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_RI_PRIME, > > > - ri_prime, DRM_HDCP_RI_LEN); > > > - if (ret) > > > - drm_dbg_kms(&i915->drm, "Read Ri' over DDC failed > > > (%d)\n", > > > - ret); > > > - return ret; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_read_ksv_ready(struct intel_digital_port *dig_port, > > > - bool *ksv_ready) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int ret; > > > - u8 val; > > > - > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, > > > &val, 1); > > > - if (ret) { > > > - drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed > > > (%d)\n", > > > - ret); > > > - return ret; > > > - } > > > - *ksv_ready = val & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY; > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port, > > > - int num_downstream, u8 *ksv_fifo) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int ret; > > > - ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_KSV_FIFO, > > > - ksv_fifo, num_downstream * > > > DRM_HDCP_KSV_LEN); > > > - if (ret) { > > > - drm_dbg_kms(&i915->drm, > > > - "Read ksv fifo over DDC failed (%d)\n", ret); > > > - return ret; > > > - } > > > - return 0; > > > -} > > > - > > > -static > > > -int intel_hdmi_hdcp_read_v_prime_part(struct intel_digital_port > > > *dig_port, > > > - int i, u32 *part) > > > -{ > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int ret; > > > - > > > - if (i >= DRM_HDCP_V_PRIME_NUM_PARTS) > > > - return -EINVAL; > > > - > > > - ret = intel_hdmi_hdcp_read(dig_port, > > > DRM_HDCP_DDC_V_PRIME(i), > > > - part, DRM_HDCP_V_PRIME_PART_LEN); > > > - if (ret) > > > - drm_dbg_kms(&i915->drm, "Read V'[%d] over DDC failed > > > (%d)\n", > > > - i, ret); > > > - return ret; > > > -} > > > - > > > static int kbl_repositioning_enc_en_signal(struct intel_connector > > > *connector, > > > enum transcoder cpu_transcoder) > > > { > > > @@ -1532,50 +1425,40 @@ int intel_hdmi_hdcp_toggle_signalling(struct > > > intel_digital_port *dig_port, > > > return 0; > > > } > > > > > > -static > > > -bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port > *dig_port, > > > - struct intel_connector *connector) > > > +static int > > > +intel_hdmi_hdcp1_enable_encryption(struct drm_connector > > > *drm_connector) > > > { > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - enum port port = dig_port->base.port; > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > int ret; > > > - union { > > > - u32 reg; > > > - u8 shim[DRM_HDCP_RI_LEN]; > > > - } ri; > > > > > > - ret = intel_hdmi_hdcp_read_ri_prime(dig_port, ri.shim); > > > + ret = intel_hdmi_hdcp_toggle_signalling(dig_port, cpu_transcoder, > > > true); > > > if (ret) > > > - return false; > > > - > > > - intel_de_write(i915, HDCP_RPRIME(i915, cpu_transcoder, port), > > > ri.reg); > > > + return ret; > > > > > > - /* Wait for Ri prime match */ > > > - if (wait_for((intel_de_read(i915, HDCP_STATUS(i915, > > > cpu_transcoder, port)) & > > > - (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC)) == > > > - (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) { > > > - drm_dbg_kms(&i915->drm, "Ri' mismatch detected (%x)\n", > > > - intel_de_read(i915, HDCP_STATUS(i915, > > > cpu_transcoder, > > > - port))); > > > - return false; > > > - } > > > - return true; > > > + return intel_hdcp1_enable_encryption(drm_connector); > > > } > > > > > > -static > > > -bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port, > > > - struct intel_connector *connector) > > > +static int intel_hdmi_hdcp1_disable(struct drm_connector > > > *drm_connector) > > > { > > > - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); > > > - int retry; > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > + enum transcoder cpu_transcoder = connector- > > > >hdcp.cpu_transcoder; > > > + struct drm_i915_private *i915 = to_i915(connector->base.dev); > > > + int ret; > > > > > > - for (retry = 0; retry < 3; retry++) > > > - if (intel_hdmi_hdcp_check_link_once(dig_port, connector)) > > > - return true; > > > + ret = intel_hdcp1_disable(drm_connector); > > > + if (ret) { > > > + drm_err(&i915->drm, "[%s:%d] Failed to disable HDCP 1.4\n", > > > + connector->base.name, connector->base.base.id); > > > + return ret; > > > + } > > > > > > - drm_err(&i915->drm, "Link check failed\n"); > > > - return false; > > > + return intel_hdmi_hdcp_toggle_signalling(dig_port, cpu_transcoder, > > > + false); > > > } > > > > > > struct hdcp2_hdmi_msg_timeout { > > > @@ -1718,9 +1601,8 @@ int intel_hdmi_hdcp2_read_msg(struct > > > intel_digital_port *dig_port, > > > return ret; > > > } > > > > > > -static > > > -int intel_hdmi_hdcp2_check_link(struct intel_digital_port *dig_port, > > > - struct intel_connector *connector) > > > +static int intel_hdmi_hdcp2_check_link(struct intel_digital_port > *dig_port, > > > + struct intel_connector *connector) > > > { > > > u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN]; > > > int ret; > > > @@ -1741,13 +1623,19 @@ int intel_hdmi_hdcp2_check_link(struct > > > intel_digital_port *dig_port, > > > return ret; > > > } > > > > > > -static > > > -int intel_hdmi_hdcp2_capable(struct intel_digital_port *dig_port, > > > - bool *capable) > > > +static int intel_hdmi_hdcp2_capable(struct drm_connector > > > *drm_connector, > > > + bool *capable) > > > { > > > + struct intel_connector *connector = > > > to_intel_connector(drm_connector); > > > + struct intel_digital_port *dig_port = > > > + intel_attached_dig_port(connector); > > > u8 hdcp2_version; > > > int ret; > > > > > > + ret = intel_hdcp2_capable(drm_connector, capable); > > > + if (ret || !capable) > > > + return ret; > > > + > > > *capable = false; > > > ret = intel_hdmi_hdcp_read(dig_port, > > > HDCP_2_2_HDMI_REG_VER_OFFSET, > > > &hdcp2_version, sizeof(hdcp2_version)); > > > @@ -1758,23 +1646,30 @@ int intel_hdmi_hdcp2_capable(struct > > > intel_digital_port *dig_port, > > > } > > > > > > static const struct intel_hdcp_shim intel_hdmi_hdcp_shim = { > > > - .write_an_aksv = intel_hdmi_hdcp_write_an_aksv, > > > - .read_bksv = intel_hdmi_hdcp_read_bksv, > > > - .read_bstatus = intel_hdmi_hdcp_read_bstatus, > > > - .repeater_present = intel_hdmi_hdcp_repeater_present, > > > - .read_ri_prime = intel_hdmi_hdcp_read_ri_prime, > > > - .read_ksv_ready = intel_hdmi_hdcp_read_ksv_ready, > > > - .read_ksv_fifo = intel_hdmi_hdcp_read_ksv_fifo, > > > - .read_v_prime_part = intel_hdmi_hdcp_read_v_prime_part, > > > .toggle_signalling = intel_hdmi_hdcp_toggle_signalling, > > > - .check_link = intel_hdmi_hdcp_check_link, > > > .write_2_2_msg = intel_hdmi_hdcp2_write_msg, > > > .read_2_2_msg = intel_hdmi_hdcp2_read_msg, > > > - .check_2_2_link = intel_hdmi_hdcp2_check_link, > > > - .hdcp_2_2_capable = intel_hdmi_hdcp2_capable, > > > + .check_2_2_link = intel_hdmi_hdcp2_check_link, > > > .protocol = HDCP_PROTOCOL_HDMI, > > > }; > > > > > > +static const struct drm_hdcp_helper_funcs > intel_hdmi_hdcp_helper_funcs > > > = { > > > + .setup = intel_hdcp_setup, > > > + .load_keys = intel_hdcp_load_keys, > > > + .hdcp2_capable = intel_hdmi_hdcp2_capable, > > > + .hdcp2_enable = intel_hdcp2_enable, > > > + .hdcp2_check_link = intel_hdcp2_check_link, > > > + .hdcp2_disable = intel_hdcp2_disable, > > > + .hdcp1_send_an_aksv = intel_hdmi_hdcp1_send_an_aksv, > > > + .hdcp1_store_receiver_info = intel_hdcp1_store_receiver_info, > > > + .hdcp1_enable_encryption = intel_hdmi_hdcp1_enable_encryption, > > > + .hdcp1_wait_for_r0 = intel_hdcp1_wait_for_r0, > > > + .hdcp1_match_ri = intel_hdcp1_match_ri, > > > + .hdcp1_post_encryption = intel_hdcp1_post_encryption, > > > + .hdcp1_store_ksv_fifo = intel_hdcp1_store_ksv_fifo, > > > + .hdcp1_disable = intel_hdmi_hdcp1_disable, > > > +}; > > > + > > > static int intel_hdmi_source_max_tmds_clock(struct intel_encoder > > > *encoder) > > > { > > > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); > > > @@ -2922,6 +2817,37 @@ void intel_infoframe_init(struct > intel_digital_port > > > *dig_port) > > > } > > > } > > > > > > +static void intel_hdmi_hdcp_init(struct intel_digital_port *dig_port, > > > + struct intel_connector *connector) > > > +{ > > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > > + struct intel_encoder *intel_encoder = &dig_port->base; > > > + enum port port = intel_encoder->port; > > > + struct drm_hdcp_helper_data *data; > > > + int ret; > > > + > > > + if (!is_hdcp_supported(dev_priv, port)) > > > + return; > > > + > > > + data = drm_hdcp_helper_initialize_hdmi( > > > + &connector->base, &intel_hdmi_hdcp_helper_funcs, true); > > > + if (IS_ERR(data)) { > > > + drm_dbg_kms(&dev_priv->drm, "HDCP init failed > > > ret=%ld\n", > > > + PTR_ERR(data)); > > > + return; > > > + } > > > + > > > + ret = intel_hdcp_init(connector, dig_port, &intel_hdmi_hdcp_shim); > > > + if (ret) { > > > + drm_hdcp_helper_destroy(data); > > > + drm_dbg_kms(&dev_priv->drm, "Intel HDCP init failed > > > ret=%d\n", > > > + ret); > > > + return; > > > + } > > > + > > > + connector->hdcp_helper_data = data; > > > +} > > > + > > > void intel_hdmi_init_connector(struct intel_digital_port *dig_port, > > > struct intel_connector *intel_connector) > > > { > > > @@ -2975,13 +2901,7 @@ void intel_hdmi_init_connector(struct > > > intel_digital_port *dig_port, > > > intel_connector_attach_encoder(intel_connector, intel_encoder); > > > intel_hdmi->attached_connector = intel_connector; > > > > > > - if (is_hdcp_supported(dev_priv, port)) { > > > - int ret = intel_hdcp_init(intel_connector, dig_port, > > > - &intel_hdmi_hdcp_shim); > > > - if (ret) > > > - drm_dbg_kms(&dev_priv->drm, > > > - "HDCP init failed, skipping.\n"); > > > - } > > > + intel_hdmi_hdcp_init(dig_port, intel_connector); > > > > > > /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be > > > written > > > * 0xd. Failure to do so will result in spurious interrupts being > > > -- > > > 2.39.0.246.g2a6d74b583-goog > > > I send v7 which should have the comments addressed. Thanks a lot!
