From patchwork Wed May 22 19:00:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Wajdeczko X-Patchwork-Id: 10956509 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 06BD76C5 for ; Wed, 22 May 2019 19:01:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2035E201BC for ; Wed, 22 May 2019 19:01:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0EF36201B1; Wed, 22 May 2019 19:01:16 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 0514B2018F for ; Wed, 22 May 2019 19:01:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3C8F38996E; Wed, 22 May 2019 19:01:14 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 484AD89994 for ; Wed, 22 May 2019 19:01:12 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 May 2019 12:01:12 -0700 X-ExtLoop1: 1 Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga006.jf.intel.com with ESMTP; 22 May 2019 12:01:11 -0700 Received: from mwajdecz-MOBL1.ger.corp.intel.com (mwajdecz-mobl1.ger.corp.intel.com [172.28.174.50]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id x4MJ18WF012878; Wed, 22 May 2019 20:01:10 +0100 From: Michal Wajdeczko To: intel-gfx@lists.freedesktop.org Date: Wed, 22 May 2019 19:00:56 +0000 Message-Id: <20190522190057.848-3-michal.wajdeczko@intel.com> X-Mailer: git-send-email 2.10.1.windows.1 In-Reply-To: <20190522190057.848-1-michal.wajdeczko@intel.com> References: <20190522190057.848-1-michal.wajdeczko@intel.com> Subject: [Intel-gfx] [PATCH 2/3] drm/i915/huc: Check HuC firmware status only once X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP During driver load we checked that HuC firmware was verified, and once verified it stays verified, so there is no need to check that again. Signed-off-by: Michal Wajdeczko Cc: Chris Wilson Cc: Tony Ye Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/intel_huc.c | 17 ++++++----------- drivers/gpu/drm/i915/intel_huc.h | 2 ++ 2 files changed, 8 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 1ff1fb015e58..aac17916e130 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -113,6 +113,8 @@ int intel_huc_auth(struct intel_huc *huc) u32 status; int ret; + GEM_BUG_ON(huc->verified); + if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS) return -ENOEXEC; @@ -134,6 +136,7 @@ int intel_huc_auth(struct intel_huc *huc) goto fail; } + huc->verified = true; return 0; fail: @@ -147,24 +150,16 @@ int intel_huc_auth(struct intel_huc *huc) * intel_huc_check_status() - check HuC status * @huc: intel_huc structure * - * This function reads status register to verify if HuC - * firmware was successfully loaded. - * * Returns: 1 if HuC firmware is loaded and verified, * 0 if HuC firmware is not loaded and -ENODEV if HuC * is not present on this platform. */ int intel_huc_check_status(struct intel_huc *huc) { - struct drm_i915_private *dev_priv = huc_to_i915(huc); - intel_wakeref_t wakeref; - bool status = false; + struct drm_i915_private *i915 = huc_to_i915(huc); - if (!HAS_HUC(dev_priv)) + if (!HAS_HUC(i915)) return -ENODEV; - with_intel_runtime_pm(dev_priv, wakeref) - status = I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED; - - return status; + return huc->verified; } diff --git a/drivers/gpu/drm/i915/intel_huc.h b/drivers/gpu/drm/i915/intel_huc.h index a0c21ae02a99..8c2b6c8f179c 100644 --- a/drivers/gpu/drm/i915/intel_huc.h +++ b/drivers/gpu/drm/i915/intel_huc.h @@ -31,6 +31,7 @@ struct intel_huc { /* Generic uC firmware management */ struct intel_uc_fw fw; + bool verified; /* HuC-specific additions */ struct i915_vma *rsa_data; @@ -52,6 +53,7 @@ static inline void intel_huc_fini_misc(struct intel_huc *huc) static inline int intel_huc_sanitize(struct intel_huc *huc) { intel_uc_fw_sanitize(&huc->fw); + huc->verified = false; return 0; }