From patchwork Fri Jun 2 15:55:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Previn X-Patchwork-Id: 13265563 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 290EDC7EE29 for ; Fri, 2 Jun 2023 15:55:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4605610E5C7; Fri, 2 Jun 2023 15:55:54 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id A48FF10E055; Fri, 2 Jun 2023 15:55:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1685721351; x=1717257351; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=GCQEUTEOhwnTHFGFCTPY9s1/gDuQ3ukOZz2DIGan4ow=; b=TINlzvXxq+mHEmavAgiefqEWALdcZ6Ke4g1gAVeEV2cj2CcrDNhQ591b yFqnRQj6HtROqrkpDBHgpyX2J+0noN92A4v5q5s2DicXR3jZDLR+2sSl0 Ynym8cudAihMdH4lVk/T8xNOSvsEW7lQoqYIBcAMc6mQRcvA2uGl+Ahsn CYGKoGbPXkeFD0I4YseBYn2nC8hCeJ3gwRfCwEj1y5B/q8MlddSNhdBlY NmmAGz4S5ofA7CH7iDqUJj/hgbI7uW+7Ij2i7VOmbb1eRixsnNG/Qpe2c ZbbY94bKa77atv0rcNPeDJ9cntsMwEazGj8+xLvVlhXkwW7Fn/k6s9fnP g==; X-IronPort-AV: E=McAfee;i="6600,9927,10729"; a="442277967" X-IronPort-AV: E=Sophos;i="6.00,213,1681196400"; d="scan'208";a="442277967" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2023 08:55:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10729"; a="777740725" X-IronPort-AV: E=Sophos;i="6.00,213,1681196400"; d="scan'208";a="777740725" Received: from aalteres-desk.fm.intel.com ([10.80.57.53]) by fmsmga004.fm.intel.com with ESMTP; 02 Jun 2023 08:55:50 -0700 From: Alan Previn To: intel-gfx@lists.freedesktop.org Subject: [PATCH v2] drm/i915/pxp: Optimize GET_PARAM:PXP_STATUS Date: Fri, 2 Jun 2023 08:55:48 -0700 Message-Id: <20230602155548.2561259-1-alan.previn.teres.alexis@intel.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Daniele Ceraolo Spurio , dri-devel@lists.freedesktop.org, Alan Previn Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" After recent discussions with Mesa folks, it was requested that we optimize i915's GET_PARAM for the PXP_STATUS without changing the UAPI spec. Add these additional optimizations: - If any PXP initializatoin flow failed, then ensure that we catch it so that we can change the returned PXP_STATUS from "2" (i.e. 'PXP is supported but not yet ready') to "-ENODEV". This typically should not happen and if it does, we have a platform configuration issue. - If a PXP arbitration session creation event failed due to incorrect firmware version or blocking SOC fusing or blocking BIOS configuration (platform reasons that won't change if we retry), then reflect that blockage by also returning -ENODEV in the GET_PARAM:PXP_STATUS. - GET_PARAM:PXP_STATUS should not wait at all if PXP is supported but non-i915 dependencies (component-driver / firmware) we are still pending to complete the init flows. In this case, just return "2" immediately (i.e. 'PXP is supported but not yet ready'). Signed-off-by: Alan Previn --- drivers/gpu/drm/i915/gt/uc/intel_gsc_uc.c | 11 +++++++++- drivers/gpu/drm/i915/i915_getparam.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp.c | 25 ++++++++++++++++++---- drivers/gpu/drm/i915/pxp/intel_pxp.h | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c | 7 +++--- drivers/gpu/drm/i915/pxp/intel_pxp_tee.c | 7 +++--- drivers/gpu/drm/i915/pxp/intel_pxp_types.h | 9 ++++++++ 7 files changed, 50 insertions(+), 13 deletions(-) base-commit: 0b6ed0bbb17dfe081649990abbd42ddb41e09d42 diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc.c index fb0984f875f9..4dd744c96a37 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc.c @@ -42,8 +42,17 @@ static void gsc_work(struct work_struct *work) } ret = intel_gsc_proxy_request_handler(gsc); - if (ret) + if (ret) { + if (actions & GSC_ACTION_FW_LOAD) { + /* + * a proxy request failure that came together with the + * firmware load action means the last part of init has + * failed so GSC fw won't be usable after this + */ + intel_uc_fw_change_status(&gsc->fw, INTEL_UC_FIRMWARE_LOAD_FAIL); + } goto out_put; + } /* mark the GSC FW init as done the first time we run this */ if (actions & GSC_ACTION_FW_LOAD) { diff --git a/drivers/gpu/drm/i915/i915_getparam.c b/drivers/gpu/drm/i915/i915_getparam.c index 6f11d7eaa91a..1b2ee98a158a 100644 --- a/drivers/gpu/drm/i915/i915_getparam.c +++ b/drivers/gpu/drm/i915/i915_getparam.c @@ -105,7 +105,7 @@ int i915_getparam_ioctl(struct drm_device *dev, void *data, return value; break; case I915_PARAM_PXP_STATUS: - value = intel_pxp_get_readiness_status(i915->pxp); + value = intel_pxp_get_readiness_status(i915->pxp, 1); if (value < 0) return value; break; diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index bb2e15329f34..5677377f3bb2 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -359,21 +359,38 @@ void intel_pxp_end(struct intel_pxp *pxp) intel_runtime_pm_put(&i915->runtime_pm, wakeref); } +static bool pxp_required_fw_failed(struct intel_pxp *pxp) +{ + if (__intel_uc_fw_status(&pxp->ctrl_gt->uc.huc.fw) == INTEL_UC_FIRMWARE_LOAD_FAIL) + return true; + if (HAS_ENGINE(pxp->ctrl_gt, GSC0) && + __intel_uc_fw_status(&pxp->ctrl_gt->uc.gsc.fw) == INTEL_UC_FIRMWARE_LOAD_FAIL) + return true; + + return false; +} + /* * this helper is used by both intel_pxp_start and by * the GET_PARAM IOCTL that user space calls. Thus, the * return values here should match the UAPI spec. */ -int intel_pxp_get_readiness_status(struct intel_pxp *pxp) +int intel_pxp_get_readiness_status(struct intel_pxp *pxp, int timeout_ms) { if (!intel_pxp_is_enabled(pxp)) return -ENODEV; + if (pxp_required_fw_failed(pxp)) + return -ENODEV; + + if (pxp->platform_cfg_is_bad) + return -ENODEV; + if (HAS_ENGINE(pxp->ctrl_gt, GSC0)) { - if (wait_for(intel_pxp_gsccs_is_ready_for_sessions(pxp), 250)) + if (wait_for(intel_pxp_gsccs_is_ready_for_sessions(pxp), timeout_ms)) return 2; } else { - if (wait_for(pxp_component_bound(pxp), 250)) + if (wait_for(pxp_component_bound(pxp), timeout_ms)) return 2; } return 1; @@ -387,7 +404,7 @@ int intel_pxp_start(struct intel_pxp *pxp) { int ret = 0; - ret = intel_pxp_get_readiness_status(pxp); + ret = intel_pxp_get_readiness_status(pxp, 250); if (ret < 0) return ret; else if (ret > 1) diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h index 17254c3f1267..d9372f6f7797 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h @@ -26,7 +26,7 @@ void intel_pxp_fini_hw(struct intel_pxp *pxp); void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp); void intel_pxp_tee_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id); -int intel_pxp_get_readiness_status(struct intel_pxp *pxp); +int intel_pxp_get_readiness_status(struct intel_pxp *pxp, int timeout_ms); int intel_pxp_get_backend_timeout_ms(struct intel_pxp *pxp); int intel_pxp_start(struct intel_pxp *pxp); void intel_pxp_end(struct intel_pxp *pxp); diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c index a217821eb0fb..ff7c961cda82 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c @@ -17,12 +17,13 @@ #include "intel_pxp_types.h" static bool -is_fw_err_platform_config(u32 type) +is_fw_err_platform_config(struct intel_pxp *pxp, u32 type) { switch (type) { case PXP_STATUS_ERROR_API_VERSION: case PXP_STATUS_PLATFCONFIG_KF1_NOVERIF: case PXP_STATUS_PLATFCONFIG_KF1_BAD: + pxp->platform_cfg_is_bad = true; return true; default: break; @@ -225,7 +226,7 @@ int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, if (ret) { drm_err(&i915->drm, "Failed to init session %d, ret=[%d]\n", arb_session_id, ret); } else if (msg_out.header.status != 0) { - if (is_fw_err_platform_config(msg_out.header.status)) { + if (is_fw_err_platform_config(pxp, msg_out.header.status)) { drm_info_once(&i915->drm, "PXP init-session-%d failed due to BIOS/SOC:0x%08x:%s\n", arb_session_id, msg_out.header.status, @@ -268,7 +269,7 @@ void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 session_id) drm_err(&i915->drm, "Failed to inv-stream-key-%u, ret=[%d]\n", session_id, ret); } else if (msg_out.header.status != 0) { - if (is_fw_err_platform_config(msg_out.header.status)) { + if (is_fw_err_platform_config(pxp, msg_out.header.status)) { drm_info_once(&i915->drm, "PXP inv-stream-key-%u failed due to BIOS/SOC :0x%08x:%s\n", session_id, msg_out.header.status, diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c index 1ce07d7e8769..1de054126c6d 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c @@ -20,12 +20,13 @@ #include "intel_pxp_types.h" static bool -is_fw_err_platform_config(u32 type) +is_fw_err_platform_config(struct intel_pxp *pxp, u32 type) { switch (type) { case PXP_STATUS_ERROR_API_VERSION: case PXP_STATUS_PLATFCONFIG_KF1_NOVERIF: case PXP_STATUS_PLATFCONFIG_KF1_BAD: + pxp->platform_cfg_is_bad = true; return true; default: break; @@ -339,7 +340,7 @@ int intel_pxp_tee_cmd_create_arb_session(struct intel_pxp *pxp, if (ret) { drm_err(&i915->drm, "Failed to send tee msg init arb session, ret=[%d]\n", ret); } else if (msg_out.header.status != 0) { - if (is_fw_err_platform_config(msg_out.header.status)) { + if (is_fw_err_platform_config(pxp, msg_out.header.status)) { drm_info_once(&i915->drm, "PXP init-arb-session-%d failed due to BIOS/SOC:0x%08x:%s\n", arb_session_id, msg_out.header.status, @@ -387,7 +388,7 @@ void intel_pxp_tee_end_arb_fw_session(struct intel_pxp *pxp, u32 session_id) drm_err(&i915->drm, "Failed to send tee msg for inv-stream-key-%u, ret=[%d]\n", session_id, ret); } else if (msg_out.header.status != 0) { - if (is_fw_err_platform_config(msg_out.header.status)) { + if (is_fw_err_platform_config(pxp, msg_out.header.status)) { drm_info_once(&i915->drm, "PXP inv-stream-key-%u failed due to BIOS/SOC :0x%08x:%s\n", session_id, msg_out.header.status, diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h index 1a8765866b8b..7e11fa8034b2 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h @@ -26,6 +26,15 @@ struct intel_pxp { */ struct intel_gt *ctrl_gt; + /** + * @platform_cfg_is_bad: used to track if any prior arb session creation resulted + * in a failure that was caused by a platform configuration issue, meaning that + * failure will not get resolved without a change to the platform (not kernel) + * such as BIOS configuration, firwmware update, etc. This bool gets reflected when + * GET_PARAM:I915_PARAM_PXP_STATUS is called. + */ + bool platform_cfg_is_bad; + /** * @kcr_base: base mmio offset for the KCR engine which is different on legacy platforms * vs newer platforms where the KCR is inside the media-tile.