From patchwork Tue Sep 26 07:17:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: sagar.a.kamble@intel.com X-Patchwork-Id: 9971247 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5FC0D602D8 for ; Tue, 26 Sep 2017 07:13:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 47ABF28D8F for ; Tue, 26 Sep 2017 07:13:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3B2EE28E48; Tue, 26 Sep 2017 07:13:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A58FD28D8F for ; Tue, 26 Sep 2017 07:13:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1A71489A08; Tue, 26 Sep 2017 07:13:54 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id B05D289A08 for ; Tue, 26 Sep 2017 07:13:52 +0000 (UTC) Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP; 26 Sep 2017 00:13:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.42,440,1500966000"; d="scan'208";a="153367084" Received: from sakamble-desktop.iind.intel.com ([10.223.26.118]) by orsmga005.jf.intel.com with ESMTP; 26 Sep 2017 00:13:50 -0700 From: Sagar Arun Kamble To: intel-gfx@lists.freedesktop.org Date: Tue, 26 Sep 2017 12:47:16 +0530 Message-Id: <1506410236-17926-1-git-send-email-sagar.a.kamble@intel.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v9 1/1] drm/i915/huc: Reorganize HuC authentication X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Prepared intel_auth_huc to separate HuC specific functionality from GuC send action. Created new header intel_huc.h to group HuC specific declarations. v2: Changed argument preparation for AUTHENTICATE_HUC. s/intel_auth_huc/intel_huc_auth. Deferred creation of intel_huc.h to later patch. v3: Rebase as intel_guc.h is removed. Added param description to intel_huc_auth. (Michal) v4: Rebase as intel_guc.h is added again. :) v5: Rebase w.r.t removal of GuC code restructuring. v6-v7: Rebase. v8: Tagged subject as drm/i915/huc. (Michal Wajdeczko) Added kernel-doc description to intel_huc_auth and intel_guc_auth_huc. s/dev_priv/i915 and removed unnecessary variable offset. (Joonas) v9: Rebase. Had conflict with i915_modparams change. Cc: Joonas Lahtinen Cc: Michal Wajdeczko Cc: Michał Winiarski Reviewed-by: Michal Wajdeczko Signed-off-by: Sagar Arun Kamble Reviewed-by: Joonas Lahtinen Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/intel_huc.c | 38 ++++++++++++++++++-------------------- drivers/gpu/drm/i915/intel_uc.c | 23 ++++++++++++++++++++++- drivers/gpu/drm/i915/intel_uc.h | 3 ++- 3 files changed, 42 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 6e1779b..8b4b535 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -225,19 +225,22 @@ void intel_huc_init_hw(struct intel_huc *huc) } /** - * intel_guc_auth_huc() - authenticate ucode - * @dev_priv: the drm_i915_device + * intel_huc_auth() - Authenticate HuC uCode + * @huc: intel_huc structure + * + * Called after HuC and GuC firmware loading during intel_uc_init_hw(). * - * Triggers a HuC fw authentication request to the GuC via intel_guc_action_ - * authenticate_huc interface. + * This function pins HuC firmware image object into GGTT. + * Then it invokes GuC action to authenticate passing the offset to RSA + * signature through intel_guc_auth_huc(). It then waits for 50ms for + * firmware verification ACK and unpins the object. */ -void intel_guc_auth_huc(struct drm_i915_private *dev_priv) +void intel_huc_auth(struct intel_huc *huc) { - struct intel_guc *guc = &dev_priv->guc; - struct intel_huc *huc = &dev_priv->huc; + struct drm_i915_private *i915 = huc_to_i915(huc); + struct intel_guc *guc = &i915->guc; struct i915_vma *vma; int ret; - u32 data[2]; if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS) return; @@ -250,23 +253,19 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv) return; } - /* Specify auth action and where public signature is. */ - data[0] = INTEL_GUC_ACTION_AUTHENTICATE_HUC; - data[1] = guc_ggtt_offset(vma) + huc->fw.rsa_offset; - - ret = intel_guc_send(guc, data, ARRAY_SIZE(data)); + ret = intel_guc_auth_huc(guc, + guc_ggtt_offset(vma) + huc->fw.rsa_offset); if (ret) { DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret); goto out; } /* Check authentication status, it should be done by now */ - ret = intel_wait_for_register(dev_priv, - HUC_STATUS2, - HUC_FW_VERIFIED, - HUC_FW_VERIFIED, - 50); - + ret = intel_wait_for_register(i915, + HUC_STATUS2, + HUC_FW_VERIFIED, + HUC_FW_VERIFIED, + 50); if (ret) { DRM_ERROR("HuC: Authentication failed %d\n", ret); goto out; @@ -275,4 +274,3 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv) out: i915_vma_unpin(vma); } - diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index 9018540..2774778 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -328,6 +328,27 @@ static void guc_disable_communication(struct intel_guc *guc) guc->send = intel_guc_send_nop; } +/** + * intel_guc_auth_huc() - Send action to GuC to authenticate HuC ucode + * @guc: intel_guc structure + * @rsa_offset: rsa offset w.r.t ggtt base of huc vma + * + * Triggers a HuC firmware authentication request to the GuC via intel_guc_send + * INTEL_GUC_ACTION_AUTHENTICATE_HUC interface. This function is invoked by + * intel_huc_auth(). + * + * Return: non-zero code on error + */ +int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset) +{ + u32 action[] = { + INTEL_GUC_ACTION_AUTHENTICATE_HUC, + rsa_offset + }; + + return intel_guc_send(guc, action, ARRAY_SIZE(action)); +} + int intel_uc_init_hw(struct drm_i915_private *dev_priv) { struct intel_guc *guc = &dev_priv->guc; @@ -390,7 +411,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv) if (ret) goto err_log_capture; - intel_guc_auth_huc(dev_priv); + intel_huc_auth(&dev_priv->huc); if (i915_modparams.enable_guc_submission) { if (i915_modparams.guc_log_level >= 0) gen9_enable_guc_interrupts(dev_priv); diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h index 7703c9a..6966349 100644 --- a/drivers/gpu/drm/i915/intel_uc.h +++ b/drivers/gpu/drm/i915/intel_uc.h @@ -211,6 +211,7 @@ struct intel_huc { int intel_guc_sample_forcewake(struct intel_guc *guc); int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len); int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len); +int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset); static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len) { @@ -254,6 +255,6 @@ static inline u32 guc_ggtt_offset(struct i915_vma *vma) /* intel_huc.c */ void intel_huc_select_fw(struct intel_huc *huc); void intel_huc_init_hw(struct intel_huc *huc); -void intel_guc_auth_huc(struct drm_i915_private *dev_priv); +void intel_huc_auth(struct intel_huc *huc); #endif