From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 521E5C2B9F8 for ; Tue, 25 May 2021 05:48:59 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1D4826140F for ; Tue, 25 May 2021 05:48:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D4826140F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E08196E8F9; Tue, 25 May 2021 05:48:48 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id DE8676E8F9; Tue, 25 May 2021 05:48:42 +0000 (UTC) IronPort-SDR: sJiYndcMS1K9ppolGRXEOGLxpcArt4JY8CDBpI/kXLtEEDH4oy+DPh9KekbQYp2m6pNhRaVQDu G4NTlC9S3XaA== X-IronPort-AV: E=McAfee;i="6200,9189,9994"; a="266005461" X-IronPort-AV: E=Sophos;i="5.82,327,1613462400"; d="scan'208";a="266005461" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2021 22:48:42 -0700 IronPort-SDR: LQ7+leoFT5JkJ+LAmF3s0xgvHsX3FhOSM/rt4mxy4GMFuvi5ucBiK42Te9qwuD9cVhOLi2k42u 7J3iqBsIQs3Q== X-IronPort-AV: E=Sophos;i="5.82,327,1613462400"; d="scan'208";a="397231807" Received: from dceraolo-linux.fm.intel.com ([10.1.27.145]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2021 22:48:42 -0700 From: Daniele Ceraolo Spurio To: intel-gfx@lists.freedesktop.org Subject: [PATCH v4 15/17] drm/i915/pxp: Add plane decryption support Date: Mon, 24 May 2021 22:48:01 -0700 Message-Id: <20210525054803.7387-16-daniele.ceraolospurio@intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210525054803.7387-1-daniele.ceraolospurio@intel.com> References: <20210525054803.7387-1-daniele.ceraolospurio@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anshuman Gupta , Huang Sean Z , dri-devel@lists.freedesktop.org, Daniele Ceraolo Spurio , Gaurav Kumar , Bommu Krishnaiah Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Anshuman Gupta Add support to enable/disable PLANE_SURF Decryption Request bit. It requires only to enable plane decryption support when following condition met. 1. PXP session is enabled. 2. Buffer object is protected. v2: - Used gen fb obj user_flags instead gem_object_metadata. [Krishna] v3: - intel_pxp_gem_object_status() API changes. v4: use intel_pxp_is_active (Daniele) v5: rebase and use the new protected object status checker (Daniele) v6: used plane state for plane_decryption to handle async flip as suggested by Ville. v7: check pxp session while plane decrypt state computation. [Ville] removed pointless code. [Ville] v8 (Daniele): update PXP check Cc: Bommu Krishnaiah Cc: Huang Sean Z Cc: Gaurav Kumar Cc: Ville Syrjälä Signed-off-by: Anshuman Gupta Signed-off-by: Daniele Ceraolo Spurio --- .../gpu/drm/i915/display/intel_atomic_plane.c | 16 ++++++++++++++++ drivers/gpu/drm/i915/display/intel_display.c | 4 ++++ .../gpu/drm/i915/display/intel_display_types.h | 3 +++ .../gpu/drm/i915/display/skl_universal_plane.c | 15 ++++++++++++--- drivers/gpu/drm/i915/i915_reg.h | 1 + 5 files changed, 36 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c index 36f52a1d7552..88b3272c0b00 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c @@ -41,6 +41,7 @@ #include "intel_display_types.h" #include "intel_pm.h" #include "intel_sprite.h" +#include "pxp/intel_pxp.h" static void intel_plane_state_reset(struct intel_plane_state *plane_state, struct intel_plane *plane) @@ -383,6 +384,14 @@ intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id) return NULL; } +static int bo_has_valid_encryption(const struct drm_i915_gem_object *obj) +{ + struct drm_i915_private *i915 = to_i915(obj->base.dev); + + return i915_gem_object_has_valid_protection(obj) && + intel_pxp_is_active(&i915->gt.pxp); +} + int intel_plane_atomic_check(struct intel_atomic_state *state, struct intel_plane *plane) { @@ -397,6 +406,7 @@ int intel_plane_atomic_check(struct intel_atomic_state *state, intel_atomic_get_old_crtc_state(state, crtc); struct intel_crtc_state *new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc); + const struct drm_framebuffer *fb; if (new_crtc_state && new_crtc_state->bigjoiner_slave) { struct intel_plane *master_plane = @@ -413,6 +423,12 @@ int intel_plane_atomic_check(struct intel_atomic_state *state, new_master_plane_state, crtc); + fb = new_plane_state->hw.fb; + if (fb) + new_plane_state->decrypt = bo_has_valid_encryption(intel_fb_obj(fb)); + else + new_plane_state->decrypt = old_plane_state->decrypt; + new_plane_state->uapi.visible = false; if (!new_crtc_state) return 0; diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 0bb2e582c87f..f7f5374114ad 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -9767,6 +9767,10 @@ static int intel_atomic_check_async(struct intel_atomic_state *state) drm_dbg_kms(&i915->drm, "Color range cannot be changed in async flip\n"); return -EINVAL; } + + /* plane decryption is allow to change only in synchronous flips */ + if (old_plane_state->decrypt != new_plane_state->decrypt) + return -EINVAL; } return 0; diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index ce05475ad560..6b5dab9e1c40 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -621,6 +621,9 @@ struct intel_plane_state { struct intel_fb_view view; + /* Plane pxp decryption state */ + bool decrypt; + /* plane control register */ u32 ctl; diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c index 59e032f3687a..2c8e88e8ad83 100644 --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c @@ -18,6 +18,7 @@ #include "intel_sprite.h" #include "skl_scaler.h" #include "skl_universal_plane.h" +#include "pxp/intel_pxp.h" static const u32 skl_plane_formats[] = { DRM_FORMAT_C8, @@ -997,7 +998,7 @@ skl_program_plane(struct intel_plane *plane, u8 alpha = plane_state->hw.alpha >> 8; u32 plane_color_ctl = 0, aux_dist = 0; unsigned long irqflags; - u32 keymsk, keymax; + u32 keymsk, keymax, plane_surf; u32 plane_ctl = plane_state->ctl; plane_ctl |= skl_plane_ctl_crtc(crtc_state); @@ -1086,8 +1087,16 @@ skl_program_plane(struct intel_plane *plane, * the control register just before the surface register. */ intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl); - intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), - intel_plane_ggtt_offset(plane_state) + surf_addr); + plane_surf = intel_plane_ggtt_offset(plane_state) + surf_addr; + + /* + * FIXME: pxp session invalidation can hit any time even at time of commit + * or after the commit, display content will be garbage. + */ + if (plane_state->decrypt) + plane_surf |= PLANE_SURF_DECRYPT; + + intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), plane_surf); spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 297671d78076..b3eaf45ae3ab 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7284,6 +7284,7 @@ enum { #define _PLANE_SURF_3(pipe) _PIPE(pipe, _PLANE_SURF_3_A, _PLANE_SURF_3_B) #define PLANE_SURF(pipe, plane) \ _MMIO_PLANE(plane, _PLANE_SURF_1(pipe), _PLANE_SURF_2(pipe)) +#define PLANE_SURF_DECRYPT REG_BIT(2) #define _PLANE_OFFSET_1_B 0x711a4 #define _PLANE_OFFSET_2_B 0x712a4 -- 2.29.2