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 F2C01C2BBD5 for ; Fri, 18 Dec 2020 18:45:31 +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 96CD123B01 for ; Fri, 18 Dec 2020 18:45:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96CD123B01 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4872289B9F; Fri, 18 Dec 2020 18:45:29 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3A96C898C0 for ; Fri, 18 Dec 2020 18:45:28 +0000 (UTC) IronPort-SDR: DqBh9hgDV9v4geIW2gcS5GhuFdqrZ6IGSn6wEpRitnj2NUmr1bKGJpphi1vEwCB5H/t7vFUWqH aD3eA4z4qv/A== X-IronPort-AV: E=McAfee;i="6000,8403,9839"; a="193894747" X-IronPort-AV: E=Sophos;i="5.78,431,1599548400"; d="scan'208";a="193894747" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2020 10:45:20 -0800 IronPort-SDR: B4gKC372kSUsfTF2CKd6NGdNyRlWj2BhBJNhMwF2NPD1VsY2FEeLxD+ljevMSEiMZH2ByMaBHs C/gMvtvJmHGw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,431,1599548400"; d="scan'208";a="340645781" Received: from sean-virtualbox.fm.intel.com ([10.105.158.96]) by fmsmga008.fm.intel.com with ESMTP; 18 Dec 2020 10:45:20 -0800 From: "Huang, Sean Z" To: Intel-gfx@lists.freedesktop.org Date: Fri, 18 Dec 2020 10:45:09 -0800 Message-Id: <20201218184520.8697-3-sean.z.huang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201218184520.8697-1-sean.z.huang@intel.com> References: <20201218184520.8697-1-sean.z.huang@intel.com> Subject: [Intel-gfx] [RFC-v13 02/13] drm/i915/pxp: set KCR reg init during the boot time 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: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Set the KCR init during the boot time, which is required by hardware, to allow us doing further protection operation such as sending commands to GPU or TEE. Signed-off-by: Huang, Sean Z --- drivers/gpu/drm/i915/pxp/intel_pxp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index 1e757efb7f5f..cf22006222ce 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -6,6 +6,12 @@ #include "intel_pxp.h" #include "intel_pxp_context.h" +/* KCR register definitions */ +#define KCR_INIT _MMIO(0x320f0) +#define KCR_INIT_MASK_SHIFT (16) +/* Setting KCR Init bit is required after system boot */ +#define KCR_INIT_ALLOW_DISPLAY_ME_WRITES (BIT(14) | (BIT(14) << KCR_INIT_MASK_SHIFT)) + void intel_pxp_init(struct intel_pxp *pxp) { struct intel_gt *gt = container_of(pxp, struct intel_gt, pxp); @@ -15,6 +21,8 @@ void intel_pxp_init(struct intel_pxp *pxp) intel_pxp_ctx_init(&pxp->ctx); + intel_uncore_write(gt->uncore, KCR_INIT, KCR_INIT_ALLOW_DISPLAY_ME_WRITES); + drm_info(>->i915->drm, "Protected Xe Path (PXP) protected content support initialized\n"); } -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx