From patchwork Fri Mar 24 19:20:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13187300 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B66E4C6FD1C for ; Fri, 24 Mar 2023 19:21:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 411C510EC53; Fri, 24 Mar 2023 19:21:07 +0000 (UTC) Received: from mail-yb1-xb36.google.com (mail-yb1-xb36.google.com [IPv6:2607:f8b0:4864:20::b36]) by gabe.freedesktop.org (Postfix) with ESMTPS id D2B3410EC53 for ; Fri, 24 Mar 2023 19:21:05 +0000 (UTC) Received: by mail-yb1-xb36.google.com with SMTP id b18so3540322ybp.1 for ; Fri, 24 Mar 2023 12:21:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1679685665; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3vTqxTXLPay23j0ePHLyR7drXIbXk2NLKq/09G6CL6w=; b=I5cmsujBVFn8vOJIgrFjqDA9Wksoqy6HQJOuKBimCoqtO6mKu49dabHsmj+C4UsHtJ Vwx8loPyp2yYX3KZozfcpM8p8UhXI4xMR00nAR0a9gNs80yvPIIfK7a+BvIpQ3rGqbBn crXPlaDBQuDx2DfXQKj9GI2UUBJH5XER0Nbdc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679685665; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3vTqxTXLPay23j0ePHLyR7drXIbXk2NLKq/09G6CL6w=; b=J1VBXCsbKx0z6jXxis5J+RTu/kN7RPrkzeEKiJdS9aLMu3FHflxMueoan4GOPJZokk r27VAlgLfi+wAtP9o+TvEgzKlsPq/ADi/SqvgbFlqBJ8HoHAz9G54MClT/0ykYEZd85M zowZdomgQ445yLOdN82WOHJfpNzTcc3e/Vxy4ebqKnB7wUcKSG8UMmOxTiaxpW+aCasJ b8MzokVpst8V6/uaRVLwKHxIcGQNtqeVJBzYvYC18LeWvU88cTdBzLRN2Pacpd+XwLfa wctaYdfyKlIsyyqdAwlE3jG+yUrxqu1z3IIc0csU15L0FMuxuMkL9FlsI9TyukcOozXT 5wdQ== X-Gm-Message-State: AAQBX9dJWoxqhlLpU5Q4w8f8mqFfUBG6TFzYxnvI5NwCMZZjysIoPOug srOKdOPD4fr/qv/81eJpValmNg== X-Google-Smtp-Source: AKy350bQrTrTI8PbDpx3GhTH3KJ5wY09udmHAh9QTgGtBWFZZrIHc4Axs9uggyZb3+sznmpuM0iWRA== X-Received: by 2002:a05:6902:1248:b0:b3e:5dfe:56d6 with SMTP id t8-20020a056902124800b00b3e5dfe56d6mr4135556ybu.20.1679685664928; Fri, 24 Mar 2023 12:21:04 -0700 (PDT) Received: from localhost ([2620:0:1035:15:5509:ec45:2b32:b39f]) by smtp.gmail.com with UTF8SMTPSA id 83-20020a811456000000b00545a081847esm570852ywu.14.2023.03.24.12.21.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 Mar 2023 12:21:04 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Date: Fri, 24 Mar 2023 15:20:48 -0400 Message-Id: <20230324192058.3916571-2-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230324192058.3916571-1-markyacoub@google.com> References: <20230324192058.3916571-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7 01/10] drm/hdcp: Add drm_hdcp_atomic_check() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Mark Yacoub , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org, Dmitry Baryshkov Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul Move the hdcp atomic check from i915 to drm_hdcp so other drivers can use it. No functional changes, just cleaned up some of the code when moving it over. Acked-by: Jani Nikula Reviewed-by: Rodrigo Vivi Reviewed-by: Dmitry Baryshkov Signed-off-by: Sean Paul Signed-off-by: Mark Yacoub --- Changes in v2: -None Changes in v3: -None Changes in v4: -None Changes in v5: -None Changes in v6: -Rebase: move helper from drm_hdcp.c to drm_hdcp_helper.c Changes in v7: -Removed links to patch from commit msg (Dmitry Baryshkov) drivers/gpu/drm/display/drm_hdcp_helper.c | 64 +++++++++++++++++++++ drivers/gpu/drm/i915/display/intel_atomic.c | 4 +- drivers/gpu/drm/i915/display/intel_hdcp.c | 47 --------------- drivers/gpu/drm/i915/display/intel_hdcp.h | 3 - include/drm/display/drm_hdcp_helper.h | 3 + 5 files changed, 69 insertions(+), 52 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdcp_helper.c b/drivers/gpu/drm/display/drm_hdcp_helper.c index e78999c72bd77..7ca390b3ea106 100644 --- a/drivers/gpu/drm/display/drm_hdcp_helper.c +++ b/drivers/gpu/drm/display/drm_hdcp_helper.c @@ -20,6 +20,7 @@ #include #include #include +#include static inline void drm_hdcp_print_ksv(const u8 *ksv) { @@ -419,3 +420,66 @@ void drm_hdcp_update_content_protection(struct drm_connector *connector, dev->mode_config.content_protection_property); } EXPORT_SYMBOL(drm_hdcp_update_content_protection); + +/** + * drm_hdcp_atomic_check - Helper for drivers to call during connector->atomic_check + * + * @state: pointer to the atomic state being checked + * @connector: drm_connector on which content protection state needs an update + * + * This function can be used by display drivers to perform an atomic check on the + * hdcp state elements. If hdcp state has changed, this function will set + * mode_changed on the crtc driving the connector so it can update its hardware + * to match the hdcp state. + */ +void drm_hdcp_atomic_check(struct drm_connector *connector, + struct drm_atomic_state *state) +{ + struct drm_connector_state *new_conn_state, *old_conn_state; + struct drm_crtc_state *new_crtc_state; + u64 old_hdcp, new_hdcp; + + old_conn_state = drm_atomic_get_old_connector_state(state, connector); + old_hdcp = old_conn_state->content_protection; + + new_conn_state = drm_atomic_get_new_connector_state(state, connector); + new_hdcp = new_conn_state->content_protection; + + if (!new_conn_state->crtc) { + /* + * If the connector is being disabled with CP enabled, mark it + * desired so it's re-enabled when the connector is brought back + */ + if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) + new_conn_state->content_protection = + DRM_MODE_CONTENT_PROTECTION_DESIRED; + return; + } + + new_crtc_state = + drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); + if (drm_atomic_crtc_needs_modeset(new_crtc_state) && + (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED && + new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) + new_conn_state->content_protection = + DRM_MODE_CONTENT_PROTECTION_DESIRED; + + /* + * Nothing to do if content type is unchanged and one of: + * - state didn't change + * - HDCP was activated since the last commit + * - attempting to set to desired while already enabled + */ + if (old_hdcp == new_hdcp || + (old_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED && + new_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) || + (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED && + new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED)) { + if (old_conn_state->hdcp_content_type == + new_conn_state->hdcp_content_type) + return; + } + + new_crtc_state->mode_changed = true; +} +EXPORT_SYMBOL(drm_hdcp_atomic_check); diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c index 6621aa245caf4..934ca9dcecc54 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic.c +++ b/drivers/gpu/drm/i915/display/intel_atomic.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "i915_drv.h" #include "i915_reg.h" @@ -39,7 +40,6 @@ #include "intel_cdclk.h" #include "intel_display_types.h" #include "intel_global_state.h" -#include "intel_hdcp.h" #include "intel_psr.h" #include "skl_universal_plane.h" @@ -123,7 +123,7 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, to_intel_digital_connector_state(old_state); struct drm_crtc_state *crtc_state; - intel_hdcp_atomic_check(conn, old_state, new_state); + drm_hdcp_atomic_check(conn, state); if (!new_state->crtc) return 0; diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 6406fd487ee52..396d2cef000aa 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -2524,53 +2524,6 @@ void intel_hdcp_cleanup(struct intel_connector *connector) mutex_unlock(&hdcp->mutex); } -void intel_hdcp_atomic_check(struct drm_connector *connector, - struct drm_connector_state *old_state, - struct drm_connector_state *new_state) -{ - u64 old_cp = old_state->content_protection; - u64 new_cp = new_state->content_protection; - struct drm_crtc_state *crtc_state; - - if (!new_state->crtc) { - /* - * If the connector is being disabled with CP enabled, mark it - * desired so it's re-enabled when the connector is brought back - */ - if (old_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) - new_state->content_protection = - DRM_MODE_CONTENT_PROTECTION_DESIRED; - return; - } - - crtc_state = drm_atomic_get_new_crtc_state(new_state->state, - new_state->crtc); - /* - * Fix the HDCP uapi content protection state in case of modeset. - * FIXME: As per HDCP content protection property uapi doc, an uevent() - * need to be sent if there is transition from ENABLED->DESIRED. - */ - if (drm_atomic_crtc_needs_modeset(crtc_state) && - (old_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED && - new_cp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) - new_state->content_protection = - DRM_MODE_CONTENT_PROTECTION_DESIRED; - - /* - * Nothing to do if the state didn't change, or HDCP was activated since - * the last commit. And also no change in hdcp content type. - */ - if (old_cp == new_cp || - (old_cp == DRM_MODE_CONTENT_PROTECTION_DESIRED && - new_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED)) { - if (old_state->hdcp_content_type == - new_state->hdcp_content_type) - return; - } - - crtc_state->mode_changed = true; -} - /* Handles the CP_IRQ raised from the DP HDCP sink */ void intel_hdcp_handle_cp_irq(struct intel_connector *connector) { diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h index 8f53b0c7fe5cf..7c5fd84a7b65a 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.h +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h @@ -22,9 +22,6 @@ struct intel_digital_port; enum port; enum transcoder; -void intel_hdcp_atomic_check(struct drm_connector *connector, - struct drm_connector_state *old_state, - struct drm_connector_state *new_state); int intel_hdcp_init(struct intel_connector *connector, struct intel_digital_port *dig_port, const struct intel_hdcp_shim *hdcp_shim); diff --git a/include/drm/display/drm_hdcp_helper.h b/include/drm/display/drm_hdcp_helper.h index 8aaf87bf27351..dd02b2e72a502 100644 --- a/include/drm/display/drm_hdcp_helper.h +++ b/include/drm/display/drm_hdcp_helper.h @@ -11,6 +11,7 @@ #include +struct drm_atomic_state; struct drm_device; struct drm_connector; @@ -18,5 +19,7 @@ int drm_hdcp_check_ksvs_revoked(struct drm_device *dev, u8 *ksvs, u32 ksv_count) int drm_connector_attach_content_protection_property(struct drm_connector *connector, bool hdcp_content_type); void drm_hdcp_update_content_protection(struct drm_connector *connector, u64 val); +void drm_hdcp_atomic_check(struct drm_connector *connector, + struct drm_atomic_state *state); #endif From patchwork Fri Mar 24 19:20:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13187301 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C75FAC76195 for ; 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Fri, 24 Mar 2023 12:21:06 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Date: Fri, 24 Mar 2023 15:20:49 -0400 Message-Id: <20230324192058.3916571-3-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230324192058.3916571-1-markyacoub@google.com> References: <20230324192058.3916571-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7 02/10] drm/hdcp: Avoid changing crtc state in hdcp atomic check X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Mark Yacoub , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul Instead of forcing a modeset in the hdcp atomic check, rename to drm_hdcp_has_changed and return true if the content protection value is changing and let the driver decide whether a modeset is required or not. Acked-by: Jani Nikula Reviewed-by: Rodrigo Vivi Signed-off-by: Sean Paul Signed-off-by: Mark Yacoub --- Changes in v2: -None Changes in v3: -None Changes in v4: -None Changes in v5: -None Changes in v6: -Rebase: modifications in drm_hdcp_helper.c instead of drm_hdcp.c Changes in v7: -Renamed the function from drm_hdcp_atomic_check to drm_hdcp_has_changed (Dmitry Baryshkov) drivers/gpu/drm/display/drm_hdcp_helper.c | 39 ++++++++++++++------- drivers/gpu/drm/i915/display/intel_atomic.c | 6 ++-- include/drm/display/drm_hdcp_helper.h | 2 +- 3 files changed, 30 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdcp_helper.c b/drivers/gpu/drm/display/drm_hdcp_helper.c index 7ca390b3ea106..34baf2b97cd87 100644 --- a/drivers/gpu/drm/display/drm_hdcp_helper.c +++ b/drivers/gpu/drm/display/drm_hdcp_helper.c @@ -422,18 +422,21 @@ void drm_hdcp_update_content_protection(struct drm_connector *connector, EXPORT_SYMBOL(drm_hdcp_update_content_protection); /** - * drm_hdcp_atomic_check - Helper for drivers to call during connector->atomic_check + * drm_hdcp_has_changed - Helper for drivers to call during connector->atomic_check * * @state: pointer to the atomic state being checked * @connector: drm_connector on which content protection state needs an update * * This function can be used by display drivers to perform an atomic check on the - * hdcp state elements. If hdcp state has changed, this function will set - * mode_changed on the crtc driving the connector so it can update its hardware - * to match the hdcp state. + * hdcp state elements. If hdcp state has changed in a manner which requires the + * driver to enable or disable content protection, this function will return + * true. + * + * Returns: + * true if the driver must enable/disable hdcp, false otherwise */ -void drm_hdcp_atomic_check(struct drm_connector *connector, - struct drm_atomic_state *state) +bool drm_hdcp_has_changed(struct drm_connector *connector, + struct drm_atomic_state *state) { struct drm_connector_state *new_conn_state, *old_conn_state; struct drm_crtc_state *new_crtc_state; @@ -450,19 +453,31 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, * If the connector is being disabled with CP enabled, mark it * desired so it's re-enabled when the connector is brought back */ - if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) + if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) { new_conn_state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED; - return; + return true; + } + return false; } new_crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); if (drm_atomic_crtc_needs_modeset(new_crtc_state) && (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED && - new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) + new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) { new_conn_state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED; + return true; + } + + /* + * Coming back from UNDESIRED state, CRTC change or re-enablement requires + * the driver to try CP enable. + */ + if (new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED && + new_conn_state->crtc != old_conn_state->crtc) + return true; /* * Nothing to do if content type is unchanged and one of: @@ -477,9 +492,9 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED)) { if (old_conn_state->hdcp_content_type == new_conn_state->hdcp_content_type) - return; + return false; } - new_crtc_state->mode_changed = true; + return true; } -EXPORT_SYMBOL(drm_hdcp_atomic_check); +EXPORT_SYMBOL(drm_hdcp_has_changed); diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c index 934ca9dcecc54..bce4aba752974 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic.c +++ b/drivers/gpu/drm/i915/display/intel_atomic.c @@ -123,8 +123,6 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, to_intel_digital_connector_state(old_state); struct drm_crtc_state *crtc_state; - drm_hdcp_atomic_check(conn, state); - if (!new_state->crtc) return 0; @@ -140,8 +138,8 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || new_conn_state->base.content_type != old_conn_state->base.content_type || new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode || - new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state || - !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) + !drm_connector_atomic_hdr_metadata_equal(old_state, new_state) || + drm_hdcp_has_changed(conn, state)) crtc_state->mode_changed = true; return 0; diff --git a/include/drm/display/drm_hdcp_helper.h b/include/drm/display/drm_hdcp_helper.h index dd02b2e72a502..703421fcdf96c 100644 --- a/include/drm/display/drm_hdcp_helper.h +++ b/include/drm/display/drm_hdcp_helper.h @@ -19,7 +19,7 @@ int drm_hdcp_check_ksvs_revoked(struct drm_device *dev, u8 *ksvs, u32 ksv_count) int drm_connector_attach_content_protection_property(struct drm_connector *connector, bool hdcp_content_type); void drm_hdcp_update_content_protection(struct drm_connector *connector, u64 val); -void drm_hdcp_atomic_check(struct drm_connector *connector, +bool drm_hdcp_has_changed(struct drm_connector *connector, struct drm_atomic_state *state); #endif From patchwork Fri Mar 24 19:20:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13187302 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4D0B8C6FD1C for ; Fri, 24 Mar 2023 19:21:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8924F10EC5D; Fri, 24 Mar 2023 19:21:16 +0000 (UTC) Received: from mail-yw1-x1135.google.com (mail-yw1-x1135.google.com [IPv6:2607:f8b0:4864:20::1135]) by gabe.freedesktop.org (Postfix) with ESMTPS id 86A9B10EC61 for ; 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Fri, 24 Mar 2023 12:21:13 -0700 (PDT) Received: from localhost ([2620:0:1035:15:5509:ec45:2b32:b39f]) by smtp.gmail.com with UTF8SMTPSA id x15-20020a81f90f000000b00545a08184ebsm575818ywm.123.2023.03.24.12.21.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 Mar 2023 12:21:13 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Date: Fri, 24 Mar 2023 15:20:52 -0400 Message-Id: <20230324192058.3916571-6-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230324192058.3916571-1-markyacoub@google.com> References: <20230324192058.3916571-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7 05/10] drm/i915/hdcp: Consolidate HDCP setup/state cache X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul Stick all of the setup for HDCP into a dedicated function. No functional change, but this will facilitate moving HDCP logic into helpers. Acked-by: Jani Nikula Reviewed-by: Rodrigo Vivi Signed-off-by: Sean Paul --- Changes in v2: -None Changes in v3: -None Changes in v4: -None Changes in v5: -None Changes in v6: -None Changes in v7: - None drivers/gpu/drm/i915/display/intel_hdcp.c | 52 +++++++++++++++-------- 1 file changed, 35 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 396d2cef000aa..0a20bc41be55d 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -2190,6 +2190,37 @@ 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) +{ + 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; + int ret = 0; + + if (!connector->encoder) { + drm_err(&dev_priv->drm, "[%s:%d] encoder is not initialized\n", + connector->base.name, connector->base.base.id); + return -ENODEV; + } + + hdcp->content_type = content_type; + + if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST)) { + hdcp->cpu_transcoder = pipe_config->mst_master_transcoder; + hdcp->stream_transcoder = pipe_config->cpu_transcoder; + } else { + hdcp->cpu_transcoder = pipe_config->cpu_transcoder; + hdcp->stream_transcoder = INVALID_TRANSCODER; + } + + if (DISPLAY_VER(dev_priv) >= 12) + dig_port->hdcp_port_data.fw_tc = intel_get_mei_fw_tc(hdcp->cpu_transcoder); + + return ret; +} + static int initialize_hdcp_port_data(struct intel_connector *connector, struct intel_digital_port *dig_port, const struct intel_hdcp_shim *shim) @@ -2329,28 +2360,14 @@ int intel_hdcp_enable(struct intel_connector *connector, if (!hdcp->shim) return -ENOENT; - if (!connector->encoder) { - drm_err(&dev_priv->drm, "[%s:%d] encoder is not initialized\n", - connector->base.name, connector->base.base.id); - return -ENODEV; - } - mutex_lock(&hdcp->mutex); mutex_lock(&dig_port->hdcp_mutex); drm_WARN_ON(&dev_priv->drm, hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED); - hdcp->content_type = content_type; - - if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST)) { - hdcp->cpu_transcoder = pipe_config->mst_master_transcoder; - hdcp->stream_transcoder = pipe_config->cpu_transcoder; - } else { - hdcp->cpu_transcoder = pipe_config->cpu_transcoder; - hdcp->stream_transcoder = INVALID_TRANSCODER; - } - if (DISPLAY_VER(dev_priv) >= 12) - dig_port->hdcp_port_data.fw_tc = intel_get_mei_fw_tc(hdcp->cpu_transcoder); + 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 @@ -2378,6 +2395,7 @@ int intel_hdcp_enable(struct intel_connector *connector, true); } +out: mutex_unlock(&dig_port->hdcp_mutex); mutex_unlock(&hdcp->mutex); return ret; From patchwork Fri Mar 24 19:20:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13187303 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9EC7AC6FD20 for ; Fri, 24 Mar 2023 19:21:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8092910EC69; Fri, 24 Mar 2023 19:21:21 +0000 (UTC) Received: from mail-yw1-x1129.google.com (mail-yw1-x1129.google.com [IPv6:2607:f8b0:4864:20::1129]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9CE6810EC60 for ; Fri, 24 Mar 2023 19:21:16 +0000 (UTC) Received: by mail-yw1-x1129.google.com with SMTP id 00721157ae682-536af432ee5so51799337b3.0 for ; Fri, 24 Mar 2023 12:21:16 -0700 (PDT) DKIM-Signature: v=1; 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Fri, 24 Mar 2023 12:21:15 -0700 (PDT) Received: from localhost ([2620:0:1035:15:5509:ec45:2b32:b39f]) by smtp.gmail.com with UTF8SMTPSA id u123-20020a817981000000b00545a08184a1sm570989ywc.49.2023.03.24.12.21.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 Mar 2023 12:21:15 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Date: Fri, 24 Mar 2023 15:20:53 -0400 Message-Id: <20230324192058.3916571-7-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230324192058.3916571-1-markyacoub@google.com> References: <20230324192058.3916571-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7 06/10] drm/i915/hdcp: Retain hdcp_capable return codes X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Mark Yacoub , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul The shim functions return error codes, but they are discarded in intel_hdcp.c. This patch plumbs the return codes through so they are properly handled. Acked-by: Jani Nikula Reviewed-by: Rodrigo Vivi Signed-off-by: Sean Paul Signed-off-by: Mark Yacoub --- Changes in v2: -None Changes in v3: -None Changes in v4: -None Changes in v5: -None Changes in v6: -Rebased Changes in v7: -None .../drm/i915/display/intel_display_debugfs.c | 9 +++- drivers/gpu/drm/i915/display/intel_hdcp.c | 51 ++++++++++--------- drivers/gpu/drm/i915/display/intel_hdcp.h | 4 +- 3 files changed, 37 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 7bcd90384a46d..a14b86a07e545 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -494,6 +494,7 @@ static void intel_panel_info(struct seq_file *m, static void intel_hdcp_info(struct seq_file *m, struct intel_connector *intel_connector) { + int ret; bool hdcp_cap, hdcp2_cap; if (!intel_connector->hdcp.shim) { @@ -501,8 +502,12 @@ static void intel_hdcp_info(struct seq_file *m, goto out; } - hdcp_cap = intel_hdcp_capable(intel_connector); - hdcp2_cap = intel_hdcp2_capable(intel_connector); + ret = intel_hdcp_capable(intel_connector, &hdcp_cap); + if (ret) + hdcp_cap = false; + ret = intel_hdcp2_capable(intel_connector, &hdcp2_cap); + if (ret) + hdcp2_cap = false; if (hdcp_cap) seq_puts(m, "HDCP1.4 "); diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 0a20bc41be55d..61a862ae1f286 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -177,50 +177,49 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port, } /* Is HDCP1.4 capable on Platform and Sink */ -bool intel_hdcp_capable(struct intel_connector *connector) +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; - bool capable = false; u8 bksv[5]; + *capable = false; + if (!shim) - return capable; + return 0; - if (shim->hdcp_capable) { - shim->hdcp_capable(dig_port, &capable); - } else { - if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv)) - capable = true; - } + if (shim->hdcp_capable) + return shim->hdcp_capable(dig_port, capable); + + if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv)) + *capable = true; - return capable; + return 0; } /* Is HDCP2.2 capable on Platform and Sink */ -bool intel_hdcp2_capable(struct intel_connector *connector) +int intel_hdcp2_capable(struct intel_connector *connector, bool *capable) { 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; - bool capable = false; + + *capable = false; /* I915 support for HDCP2.2 */ if (!hdcp->hdcp2_supported) - return false; + return 0; /* MEI interface is solid */ mutex_lock(&dev_priv->display.hdcp.comp_mutex); if (!dev_priv->display.hdcp.comp_added || !dev_priv->display.hdcp.master) { mutex_unlock(&dev_priv->display.hdcp.comp_mutex); - return false; + return 0; } mutex_unlock(&dev_priv->display.hdcp.comp_mutex); /* Sink's capability for HDCP2.2 */ - hdcp->shim->hdcp_2_2_capable(dig_port, &capable); - - return capable; + return hdcp->shim->hdcp_2_2_capable(dig_port, capable); } static bool intel_hdcp_in_use(struct drm_i915_private *dev_priv, @@ -2355,6 +2354,7 @@ int intel_hdcp_enable(struct intel_connector *connector, 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) @@ -2373,21 +2373,27 @@ int intel_hdcp_enable(struct intel_connector *connector, * Considering that HDCP2.2 is more secure than HDCP1.4, If the setup * is capable of HDCP2.2, it is preferred to use HDCP2.2. */ - if (intel_hdcp2_capable(connector)) { + ret = intel_hdcp2_capable(connector, &capable); + if (capable) { ret = _intel_hdcp2_enable(connector); - if (!ret) + 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. */ - if (ret && intel_hdcp_capable(connector) && - hdcp->content_type != DRM_MODE_HDCP_CONTENT_TYPE1) { + 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, @@ -2395,7 +2401,6 @@ int intel_hdcp_enable(struct intel_connector *connector, true); } -out: mutex_unlock(&dig_port->hdcp_mutex); mutex_unlock(&hdcp->mutex); return ret; diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h index 7c5fd84a7b65a..f06f6e5a2b1ad 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.h +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h @@ -33,8 +33,8 @@ void intel_hdcp_update_pipe(struct intel_atomic_state *state, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port); -bool intel_hdcp_capable(struct intel_connector *connector); -bool intel_hdcp2_capable(struct intel_connector *connector); +int intel_hdcp_capable(struct intel_connector *connector, bool *capable); +int intel_hdcp2_capable(struct intel_connector *connector, bool *capable); 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); From patchwork Fri Mar 24 19:20:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13187304 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 65A3DC76195 for ; 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Fri, 24 Mar 2023 12:21:18 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Date: Fri, 24 Mar 2023 15:20:54 -0400 Message-Id: <20230324192058.3916571-8-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230324192058.3916571-1-markyacoub@google.com> References: <20230324192058.3916571-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7 07/10] drm/i915/hdcp: Use HDCP helpers for i915 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Mark Yacoub , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul 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 Acked-by: Rodrigo Vivi Signed-off-by: Sean Paul Signed-off-by: Mark Yacoub --- 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. Changes in v7: -Added to drm_hdcp_helper_funcs new functions that are unique between DP and HDMI -Adjusted the function signatures to take "driver data" drivers/gpu/drm/i915/display/intel_ddi.c | 32 +- .../drm/i915/display/intel_display_debugfs.c | 6 +- .../drm/i915/display/intel_display_types.h | 51 +- drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 368 +++---- drivers/gpu/drm/i915/display/intel_dp_mst.c | 16 +- drivers/gpu/drm/i915/display/intel_hdcp.c | 960 ++++-------------- drivers/gpu/drm/i915/display/intel_hdcp.h | 37 +- drivers/gpu/drm/i915/display/intel_hdmi.c | 276 ++--- 8 files changed, 484 insertions(+), 1262 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 0f1ec2a98cc87..550a99d1811b4 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -28,6 +28,7 @@ #include #include +#include #include #include "i915_drv.h" @@ -2941,6 +2942,10 @@ 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)) @@ -2957,12 +2962,10 @@ 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, @@ -3008,7 +3011,14 @@ 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, @@ -3036,13 +3046,19 @@ 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 a14b86a07e545..b6a9c00a1b541 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 #include +#include #include "i915_debugfs.h" #include "i915_irq.h" @@ -502,10 +503,11 @@ static void intel_hdcp_info(struct seq_file *m, goto out; } - ret = intel_hdcp_capable(intel_connector, &hdcp_cap); + ret = intel_connector->hdcp_helper_data->funcs->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 f07395065a69f..b8b9d2109cc4b 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -430,64 +430,14 @@ enum check_link_response { * to send it over DP AUX vs DDC */ 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; - /* Detects whether sink is HDCP2.2 capable */ - int (*hdcp_2_2_capable)(struct intel_digital_port *dig_port, - bool *capable); - /* Write HDCP2.2 messages */ int (*write_2_2_msg)(struct intel_digital_port *dig_port, void *buf, size_t size); @@ -610,6 +560,7 @@ 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 e0c1771614072..694798a169f03 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -48,17 +48,24 @@ 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_hdcp_send_an_aksv(struct drm_connector *drm_connector, + void *driver_data) { + 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; + + ret = intel_hdcp1_read_an(drm_connector, &an); + if (ret) + return ret; - /* Output An first, that's easy */ 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", @@ -84,158 +91,6 @@ 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, @@ -245,40 +100,6 @@ 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; @@ -621,13 +442,19 @@ 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, void *driver_data) { + 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, @@ -643,22 +470,11 @@ 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, }; @@ -714,6 +530,48 @@ 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, + void *driver_data) +{ + struct intel_connector *connector = to_intel_connector(drm_connector); + int ret; + + ret = intel_hdcp1_post_encryption(drm_connector, driver_data); + 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, + void *driver_data) +{ + 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, driver_data); +} + static int intel_dp_mst_hdcp2_stream_encryption(struct intel_connector *connector, bool enable) @@ -772,45 +630,101 @@ 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_hdcp_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, + /* Common DRM functions that are different between DP vs HDMI*/ + .remote_read = drm_hdcp_remote_dpcd_read, + .remote_write = drm_hdcp_remote_dpcd_write, + .hdcp1_capable = drm_hdcp_helper_hdcp1_capable_dp, + .hdcp1_ksv_fifo_ready = drm_hdcp_helper_hdcp1_ksv_fifo_ready_dp, + .wait_r0 = drm_hdcp_helper_wait_r0_dp, + .hdcp1_check_link_registers = drm_hdcp_hdcp1_check_link_registers_dp, + .hdcp1_read_ksv_fifo = drm_hdcp_helper_hdcp1_read_ksv_fifo_dp +}; + +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_hdcp_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, + /* Common DRM functions that are different between DP vs HDMI*/ + .remote_read = drm_hdcp_remote_dpcd_read, + .remote_write = drm_hdcp_remote_dpcd_write, + .hdcp1_capable = drm_hdcp_helper_hdcp1_capable_dp, + .hdcp1_ksv_fifo_ready = drm_hdcp_helper_hdcp1_ksv_fifo_ready_dp, + .wait_r0 = drm_hdcp_helper_wait_r0_dp, + .hdcp1_check_link_registers = drm_hdcp_hdcp1_check_link_registers_dp, + .hdcp1_read_ksv_fifo = drm_hdcp_helper_hdcp1_read_ksv_fifo_dp +}; + 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); + 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 4077a979a9249..73088715d39bd 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -23,6 +23,7 @@ * */ +#include #include #include #include @@ -41,7 +42,6 @@ #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" @@ -372,7 +372,10 @@ 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)); @@ -580,11 +583,10 @@ 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 61a862ae1f286..96e6c4e587d8c 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); + 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, void *driver_data) { + 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, void *driver_data) { + 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, void *driver_data) { + 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 +635,83 @@ 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, + void *driver_data) +{ + 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, + void *driver_data) +{ + 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)) { 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, + void *driver_data) +{ + 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, + void *driver_data) +{ + 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 +722,22 @@ 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, void *driver_data) { + 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 +753,9 @@ 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 +1588,9 @@ 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, void *driver_data) { + 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; @@ -1986,8 +1614,8 @@ static int _intel_hdcp2_enable(struct intel_connector *connector) return 0; } -static int -_intel_hdcp2_disable(struct intel_connector *connector, bool hdcp2_link_recovery) +static int _intel_hdcp2_disable(struct intel_connector *connector, + bool hdcp2_link_recovery, void *driver_data) { struct intel_digital_port *dig_port = intel_attached_dig_port(connector); struct drm_i915_private *i915 = to_i915(connector->base.dev); @@ -2024,9 +1652,17 @@ _intel_hdcp2_disable(struct intel_connector *connector, bool hdcp2_link_recovery return ret; } +int intel_hdcp2_disable(struct drm_connector *drm_connector, void *driver_data) +{ + return _intel_hdcp2_disable(to_intel_connector(drm_connector), false, + driver_data); +} + /* 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, + void *driver_data) { + 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 +1670,39 @@ 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; } -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 +1755,28 @@ 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, void *driver_data) { - 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 +1893,6 @@ 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 +1900,12 @@ 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); - 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 +1927,8 @@ 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 +1942,5 @@ 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 f06f6e5a2b1ad..7614bbf453133 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 +27,35 @@ 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, void *driver_data); +int intel_hdcp_load_keys(struct drm_connector *drm_connector, + void *driver_data); 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, void *driver_data); +int intel_hdcp2_disable(struct drm_connector *drm_connector, void *driver_data); +int intel_hdcp2_check_link(struct drm_connector *drm_connector, + void *driver_data); +int intel_hdcp1_store_receiver_info(struct drm_connector *drm_connector, + u32 *ksv, u32 status, u8 caps, + bool repeater_present, void *driver_data); +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, + void *driver_data); +int intel_hdcp1_wait_for_r0(struct drm_connector *drm_connector, + void *driver_data); +int intel_hdcp1_match_ri(struct drm_connector *drm_connector, u32 ri_prime, + void *driver_data); +int intel_hdcp1_post_encryption(struct drm_connector *drm_connector, + void *driver_data); +int intel_hdcp1_store_ksv_fifo(struct drm_connector *drm_connector, + u8 *ksv_fifo, u8 num_downstream, u8 *bstatus, + u32 *v_prime, void *driver_data); +int intel_hdcp1_check_link(struct drm_connector *drm_connector); +int intel_hdcp1_disable(struct drm_connector *drm_connector, void *driver_data); 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 bac85d88054f5..e26e50bcccb2d 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -1325,17 +1325,25 @@ 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, + void *driver_data) { + 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", @@ -1351,120 +1359,6 @@ 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) { @@ -1533,50 +1427,42 @@ 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, + void *driver_data) { - 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, driver_data); } -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, + void *driver_data) { - 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, driver_data); + 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 { @@ -1742,13 +1628,19 @@ 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, void *driver_data) { + 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)); @@ -1759,23 +1651,38 @@ 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, + /* Common DRM functions that are different between HDMI vs DP*/ + .remote_read = drm_hdcp_remote_ddc_read, + .remote_write = drm_hdcp_remote_ddc_write, + .hdcp1_capable = drm_hdcp_helper_hdcp1_capable_hdmi, + .hdcp1_ksv_fifo_ready = drm_hdcp_helper_hdcp1_ksv_fifo_ready_hdmi, + .wait_r0 = drm_hdcp_helper_wait_r0_hdmi, + .hdcp1_check_link_registers = drm_hdcp_hdcp1_check_link_registers_hdmi, + .hdcp1_read_ksv_fifo = drm_hdcp_helper_hdcp1_read_ksv_fifo_hdmi, +}; + static int intel_hdmi_source_max_tmds_clock(struct intel_encoder *encoder) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); @@ -2919,6 +2826,37 @@ 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) { @@ -2971,13 +2909,7 @@ 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