From patchwork Fri Aug 19 22:53:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniele Ceraolo Spurio X-Patchwork-Id: 12949333 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 8FCBAC28D13 for ; Fri, 19 Aug 2022 22:54:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CA7F310E54E; Fri, 19 Aug 2022 22:54:05 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5CEAF10E5C6; Fri, 19 Aug 2022 22:53:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660949639; x=1692485639; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=N8Q+WLhsCUblwiunyEuIZZyytVObmbhZ4jKc+xws3sQ=; b=lZsvMb2WiGocsPpbKqwi5P2XD5vZ1fyaRY14t3TiC5cdfjgRTO1ul9NM khoSrTHb6vuqPM7Fgq4H8fCY4hHfddhH94kk2jyjK15pfFnLc8+BsRcf5 yxnglSgjfBB2S1BJ5qSSz/Bw2NhP0aDUntC/CBngM7HVliT8U5nG41wxr fQoSqke7/eqd/yd8ZRT5AjtWRB4b2sCO6NQYqZ71Gy4JrwyJOK4dD4KBu 2lSmMalnxbbh8GCAqeNr9Twzps5/2D9dVkaIFyXcwMKR/pgKTNhOHzAzl rxxtaWjbNb/sobAmcQX98LR9KxwIrM/u7AoeNABcH0k5qnjxHDkTGpJzE w==; X-IronPort-AV: E=McAfee;i="6500,9779,10444"; a="273513239" X-IronPort-AV: E=Sophos;i="5.93,249,1654585200"; d="scan'208";a="273513239" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2022 15:53:59 -0700 X-IronPort-AV: E=Sophos;i="5.93,249,1654585200"; d="scan'208";a="936378493" Received: from valcore-skull-1.fm.intel.com ([10.1.27.19]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2022 15:53:59 -0700 From: Daniele Ceraolo Spurio To: intel-gfx@lists.freedesktop.org Date: Fri, 19 Aug 2022 15:53:27 -0700 Message-Id: <20220819225335.3947346-8-daniele.ceraolospurio@intel.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220819225335.3947346-1-daniele.ceraolospurio@intel.com> References: <20220819225335.3947346-1-daniele.ceraolospurio@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 07/15] drm/i915/pxp: load the pxp module when we have a gsc-loaded huc 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: Alan Previn , dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The mei_pxp module is required to send the command to load authenticate the HuC to the GSC even if pxp is not in use for protected content management. Signed-off-by: Daniele Ceraolo Spurio Cc: Alan Previn Reviewed-by: Alan Previn --- drivers/gpu/drm/i915/Makefile | 10 +++--- drivers/gpu/drm/i915/pxp/intel_pxp.c | 32 +++++++++++++------- drivers/gpu/drm/i915/pxp/intel_pxp.h | 32 -------------------- drivers/gpu/drm/i915/pxp/intel_pxp_irq.h | 8 +++++ drivers/gpu/drm/i915/pxp/intel_pxp_session.c | 8 ++++- drivers/gpu/drm/i915/pxp/intel_pxp_session.h | 11 +++++-- drivers/gpu/drm/i915/pxp/intel_pxp_tee.c | 10 ++++-- 7 files changed, 57 insertions(+), 54 deletions(-) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 522ef9b4aff3..589823ad62ed 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -307,15 +307,17 @@ i915-y += \ i915-y += i915_perf.o -# Protected execution platform (PXP) support -i915-$(CONFIG_DRM_I915_PXP) += \ +# Protected execution platform (PXP) support. Base support is required for HuC +i915-y += \ pxp/intel_pxp.o \ + pxp/intel_pxp_tee.o + +i915-$(CONFIG_DRM_I915_PXP) += \ pxp/intel_pxp_cmd.o \ pxp/intel_pxp_debugfs.o \ pxp/intel_pxp_irq.o \ pxp/intel_pxp_pm.o \ - pxp/intel_pxp_session.o \ - pxp/intel_pxp_tee.o + pxp/intel_pxp_session.o # Post-mortem debug and GPU hang state capture i915-$(CONFIG_DRM_I915_CAPTURE_ERROR) += i915_gpu_error.o diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index 15311eaed848..b602a51c3692 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -103,19 +103,15 @@ static int create_vcs_context(struct intel_pxp *pxp) static void destroy_vcs_context(struct intel_pxp *pxp) { - intel_engine_destroy_pinned_context(fetch_and_zero(&pxp->ce)); + if (pxp->ce) + intel_engine_destroy_pinned_context(fetch_and_zero(&pxp->ce)); } -void intel_pxp_init(struct intel_pxp *pxp) +static void pxp_init_full(struct intel_pxp *pxp) { struct intel_gt *gt = pxp_to_gt(pxp); int ret; - if (!HAS_PXP(gt->i915)) - return; - - mutex_init(&pxp->tee_mutex); - /* * we'll use the completion to check if there is a termination pending, * so we start it as completed and we reinit it when a termination @@ -124,8 +120,7 @@ void intel_pxp_init(struct intel_pxp *pxp) init_completion(&pxp->termination); complete_all(&pxp->termination); - mutex_init(&pxp->arb_mutex); - INIT_WORK(&pxp->session_work, intel_pxp_session_work); + intel_pxp_session_management_init(pxp); ret = create_vcs_context(pxp); if (ret) @@ -143,11 +138,26 @@ void intel_pxp_init(struct intel_pxp *pxp) destroy_vcs_context(pxp); } -void intel_pxp_fini(struct intel_pxp *pxp) +void intel_pxp_init(struct intel_pxp *pxp) { - if (!intel_pxp_is_enabled(pxp)) + struct intel_gt *gt = pxp_to_gt(pxp); + + /* we rely on the mei PXP module */ + if (!IS_ENABLED(CONFIG_INTEL_MEI_PXP)) return; + /* + * If HuC is loaded by GSC but PXP is disabled, we can skip the init of + * the full PXP session/object management and just init the tee channel. + */ + if (HAS_PXP(gt->i915)) + pxp_init_full(pxp); + else if (intel_huc_is_loaded_by_gsc(>->uc.huc) && intel_uc_uses_huc(>->uc)) + intel_pxp_tee_component_init(pxp); +} + +void intel_pxp_fini(struct intel_pxp *pxp) +{ pxp->arb_is_valid = false; intel_pxp_tee_component_fini(pxp); diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h index 73847e535cab..2da309088c6d 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h @@ -12,7 +12,6 @@ struct intel_pxp; struct drm_i915_gem_object; -#ifdef CONFIG_DRM_I915_PXP struct intel_gt *pxp_to_gt(const struct intel_pxp *pxp); bool intel_pxp_is_enabled(const struct intel_pxp *pxp); bool intel_pxp_is_active(const struct intel_pxp *pxp); @@ -32,36 +31,5 @@ int intel_pxp_key_check(struct intel_pxp *pxp, bool assign); void intel_pxp_invalidate(struct intel_pxp *pxp); -#else -static inline void intel_pxp_init(struct intel_pxp *pxp) -{ -} - -static inline void intel_pxp_fini(struct intel_pxp *pxp) -{ -} - -static inline int intel_pxp_start(struct intel_pxp *pxp) -{ - return -ENODEV; -} - -static inline bool intel_pxp_is_enabled(const struct intel_pxp *pxp) -{ - return false; -} - -static inline bool intel_pxp_is_active(const struct intel_pxp *pxp) -{ - return false; -} - -static inline int intel_pxp_key_check(struct intel_pxp *pxp, - struct drm_i915_gem_object *obj, - bool assign) -{ - return -ENODEV; -} -#endif #endif /* __INTEL_PXP_H__ */ diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_irq.h b/drivers/gpu/drm/i915/pxp/intel_pxp_irq.h index 8b5793654844..8c292dc86f68 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_irq.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_irq.h @@ -27,6 +27,14 @@ void intel_pxp_irq_handler(struct intel_pxp *pxp, u16 iir); static inline void intel_pxp_irq_handler(struct intel_pxp *pxp, u16 iir) { } + +static inline void intel_pxp_irq_enable(struct intel_pxp *pxp) +{ +} + +static inline void intel_pxp_irq_disable(struct intel_pxp *pxp) +{ +} #endif #endif /* __INTEL_PXP_IRQ_H__ */ diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_session.c b/drivers/gpu/drm/i915/pxp/intel_pxp_session.c index 92b00b4de240..8453e13e9120 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_session.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_session.c @@ -137,7 +137,7 @@ static void pxp_terminate_complete(struct intel_pxp *pxp) complete_all(&pxp->termination); } -void intel_pxp_session_work(struct work_struct *work) +static void pxp_session_work(struct work_struct *work) { struct intel_pxp *pxp = container_of(work, typeof(*pxp), session_work); struct intel_gt *gt = pxp_to_gt(pxp); @@ -172,3 +172,9 @@ void intel_pxp_session_work(struct work_struct *work) intel_runtime_pm_put(gt->uncore->rpm, wakeref); } + +void intel_pxp_session_management_init(struct intel_pxp *pxp) +{ + mutex_init(&pxp->arb_mutex); + INIT_WORK(&pxp->session_work, pxp_session_work); +} diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_session.h b/drivers/gpu/drm/i915/pxp/intel_pxp_session.h index ba4c9d2b94b7..903ac52cffa1 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_session.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_session.h @@ -8,8 +8,13 @@ #include -struct work_struct; - -void intel_pxp_session_work(struct work_struct *work); +struct intel_pxp; +#ifdef CONFIG_DRM_I915_PXP +void intel_pxp_session_management_init(struct intel_pxp *pxp); +#else +static inline void intel_pxp_session_management_init(struct intel_pxp *pxp) +{ +} +#endif #endif /* __INTEL_PXP_SESSION_H__ */ diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c index 4b6f5655fab5..2c1fc49ecec1 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c @@ -97,7 +97,8 @@ static int i915_pxp_tee_component_bind(struct device *i915_kdev, return 0; /* the component is required to fully start the PXP HW */ - intel_pxp_init_hw(pxp); + if (intel_pxp_is_enabled(pxp)) + intel_pxp_init_hw(pxp); intel_runtime_pm_put(&i915->runtime_pm, wakeref); @@ -111,8 +112,9 @@ static void i915_pxp_tee_component_unbind(struct device *i915_kdev, struct intel_pxp *pxp = i915_dev_to_pxp(i915_kdev); intel_wakeref_t wakeref; - with_intel_runtime_pm_if_in_use(&i915->runtime_pm, wakeref) - intel_pxp_fini_hw(pxp); + if (intel_pxp_is_enabled(pxp)) + with_intel_runtime_pm_if_in_use(&i915->runtime_pm, wakeref) + intel_pxp_fini_hw(pxp); mutex_lock(&pxp->tee_mutex); pxp->pxp_component = NULL; @@ -130,6 +132,8 @@ int intel_pxp_tee_component_init(struct intel_pxp *pxp) struct intel_gt *gt = pxp_to_gt(pxp); struct drm_i915_private *i915 = gt->i915; + mutex_init(&pxp->tee_mutex); + ret = component_add_typed(i915->drm.dev, &i915_pxp_tee_component_ops, I915_COMPONENT_PXP); if (ret < 0) {