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=-16.7 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 BD826C433FE for ; Mon, 7 Dec 2020 00:22:23 +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 81B3B206B7 for ; Mon, 7 Dec 2020 00:22:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 81B3B206B7 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 350B96E573; Mon, 7 Dec 2020 00:22:18 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id E1AF26E554 for ; Mon, 7 Dec 2020 00:22:09 +0000 (UTC) IronPort-SDR: iBJYJpyod+IUmteQhhIkSLfGrzGLMl7OniHTFHbO3gqVaG1HPc6/MLbErJmI+HI9HR6//yDnVy iFRcOTNu/GNg== X-IronPort-AV: E=McAfee;i="6000,8403,9827"; a="191889194" X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="191889194" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2020 16:22:07 -0800 IronPort-SDR: P35ETU0lKhf4ia3o1svlzfJvqHskaS+swgvCrjHDO81Ggicc6D9yxwDPEwp+sNCMkzWmoQWmGA YOvulTeirfQQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="369586438" Received: from sean-virtualbox.fm.intel.com ([10.105.158.96]) by fmsmga002.fm.intel.com with ESMTP; 06 Dec 2020 16:22:07 -0800 From: "Huang, Sean Z" To: Intel-gfx@lists.freedesktop.org Date: Sun, 6 Dec 2020 16:21:24 -0800 Message-Id: <20201207002134.13731-7-sean.z.huang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201207002134.13731-1-sean.z.huang@intel.com> References: <20201207002134.13731-1-sean.z.huang@intel.com> Subject: [Intel-gfx] [RFC-v1 06/16] drm/i915/pxp: Implement funcs to get/set PXP tag 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" Implement the functions to get/set the PXP tag, which is 32-bit bitwise value containing the hardware session info, such as its session id, protection mode or whether it's enabled. Signed-off-by: Huang, Sean Z --- drivers/gpu/drm/i915/pxp/intel_pxp_sm.c | 125 ++++++++++++++++++------ drivers/gpu/drm/i915/pxp/intel_pxp_sm.h | 18 ++++ 2 files changed, 112 insertions(+), 31 deletions(-) diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c index 6413f401d939..38c8b6d08b61 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c @@ -41,6 +41,16 @@ static int pxp_reg_write(struct drm_i915_private *i915, u32 offset, u32 regval) return 0; } +static u8 pxp_get_session_id(int session_index, int session_type) +{ + u8 session_id = session_index & SESSION_ID_MASK; + + if (session_type == SESSION_TYPE_TYPE1) + session_id |= SESSION_TYPE_MASK; + + return session_id; +} + /** * is_sw_session_active - Check if the given sw session id is active. * @i915: i915 device handle. @@ -78,6 +88,90 @@ static bool is_sw_session_active(struct drm_i915_private *i915, int session_type return false; } +static int pxp_set_pxp_tag(struct drm_i915_private *i915, int session_type, + int session_idx, int protection_mode) +{ + struct pxp_tag *pxp_tag; + + if (!i915 || session_type >= SESSION_TYPE_MAX) + return -EINVAL; + + if (session_type == SESSION_TYPE_TYPE0 && session_idx < MAX_TYPE0_SESSIONS) { + pxp_tag = (struct pxp_tag *)&i915->pxp.ctx->type0_session_pxp_tag[session_idx]; + } else if (session_type == SESSION_TYPE_TYPE1 && session_idx < MAX_TYPE1_SESSIONS) { + pxp_tag = (struct pxp_tag *)&i915->pxp.ctx->type1_session_pxp_tag[session_idx]; + } else { + drm_err(&i915->drm, "Failed to %s, bad params session_type=[%d], session_idx=[%d]\n", + __func__, session_type, session_idx); + return -EINVAL; + } + + switch (protection_mode) { + case PROTECTION_MODE_NONE: + { + pxp_tag->enable = false; + pxp_tag->hm = false; + pxp_tag->sm = false; + break; + } + case PROTECTION_MODE_LM: + { + pxp_tag->enable = true; + pxp_tag->hm = false; + pxp_tag->sm = false; + pxp_tag->instance_id++; + break; + } + case PROTECTION_MODE_HM: + { + pxp_tag->enable = true; + pxp_tag->hm = true; + pxp_tag->sm = false; + pxp_tag->instance_id++; + break; + } + case PROTECTION_MODE_SM: + { + pxp_tag->enable = true; + pxp_tag->hm = true; + pxp_tag->sm = true; + pxp_tag->instance_id++; + break; + } + default: + drm_err(&i915->drm, "Failed to %s, bad params protection_mode=[%d]\n", + __func__, protection_mode); + return -EINVAL; + } + + pxp_tag->session_id = pxp_get_session_id(session_idx, session_type); + return 0; +} + +u32 intel_pxp_get_pxp_tag(struct drm_i915_private *i915, int session_idx, + int session_type, u32 *session_is_alive) +{ + struct pxp_tag *pxp_tag; + + if (!i915 || session_type >= SESSION_TYPE_MAX) + return -EINVAL; + + if (session_type == SESSION_TYPE_TYPE0 && session_idx < MAX_TYPE0_SESSIONS) { + pxp_tag = (struct pxp_tag *)&i915->pxp.ctx->type0_session_pxp_tag[session_idx]; + } else if (session_type == SESSION_TYPE_TYPE1 && session_idx < MAX_TYPE1_SESSIONS) { + pxp_tag = (struct pxp_tag *)&i915->pxp.ctx->type1_session_pxp_tag[session_idx]; + } else { + drm_err(&i915->drm, "Failed to %s, bad params session_type=[%d], session_idx=[%d]\n", + __func__, session_type, session_idx); + return -EINVAL; + } + + if (session_is_alive) + *session_is_alive = pxp_tag->enable; + + return pxp_tag->value; +} + static bool is_hw_type0_session_in_play(struct drm_i915_private *i915, int session_index) { u32 regval_sip = 0; @@ -172,37 +266,6 @@ static int sync_hw_sw_state(struct drm_i915_private *i915, int session_index, in return ret; } -/** - * check_if_protected_type0_sessions_are_attacked - To check if type0 active sessions are attacked. - * @i915: i915 device handle. - * - * Return: true if HW shows protected sessions are attacked, false otherwise. - */ -static bool check_if_protected_type0_sessions_are_attacked(struct drm_i915_private *i915) -{ - i915_reg_t kcr_status_reg = KCR_STATUS_1; - u32 reg_value = 0; - u32 mask = 0x80000000; - int ret; - - if (!i915) - return false; - - if (i915->pxp.ctx->global_state_attacked) - return true; - - ret = pxp_sm_reg_read(i915, kcr_status_reg.reg, ®_value); - if (ret) { - drm_err(&i915->drm, "Failed to pxp_sm_reg_read\n"); - goto end; - } - - if (reg_value & mask) - return true; -end: - return false; -} - int pxp_sm_set_kcr_init_reg(struct drm_i915_private *i915) { int ret; diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h index 222a879be96d..b5012948f971 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h @@ -20,6 +20,9 @@ #define GEN12_KCR_TSIP_LOW _MMIO(0x32264) /* KCR type1 session in play 0-31 */ #define GEN12_KCR_TSIP_HIGH _MMIO(0x32268) /* KCR type1 session in play 32-63 */ +#define SESSION_TYPE_MASK BIT(7) +#define SESSION_ID_MASK (BIT(7) - 1) + enum pxp_session_types { SESSION_TYPE_TYPE0 = 0, SESSION_TYPE_TYPE1 = 1, @@ -36,6 +39,21 @@ enum pxp_protection_modes { PROTECTION_MODE_ALL }; +struct pxp_tag { + union { + u32 value; + struct { + u32 session_id : 8; + u32 instance_id : 8; + u32 enable : 1; + u32 hm : 1; + u32 reserved_1 : 1; + u32 sm : 1; + u32 reserved_2 : 12; + }; + }; +}; + /** * struct pxp_protected_session - linked list to track all active sessions. */ -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx