From patchwork Thu Apr 6 17:44:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Previn X-Patchwork-Id: 13203798 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 9BB82C7618D for ; Thu, 6 Apr 2023 17:44:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F260910EC72; Thu, 6 Apr 2023 17:44:30 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id D7E5210E0F6; Thu, 6 Apr 2023 17:44:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680803067; x=1712339067; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OpOk3qfsT4vOSEWKsEyhrV3YmoK37ZtL8PS/bHuSpe0=; b=bAAyMeQzgPgKxVV1Ni8j9dO0sS9qCZc5pVeVyWZvBDelO6aVs/OeVYKn 7DjqFCG4UXyFP4z/oWrRy/XdP7CJkq5lvLma8VcYoH9dgocTnzCFCQdMz r2lABULInALpPGo8w4cAkNe1mGQ0cL8CcJnLdWDnXzU1WDnIpVlyQkssU 1LOrGisvtEJnHaaDnsI+uwrjcCZHaBZbURBNmVEAqh6fT4Ul+b3KD4PNT vPsUIsylWYzT4FXsq0lpjF7kXltbuPxJjjH4QT18gmftgh7em4823J+SY iUKLdthZsYGXo8l9mApaWN9dg02pyVCmzcpuxexoYYj0TDYLQrYU+ZnSL A==; X-IronPort-AV: E=McAfee;i="6600,9927,10672"; a="345432450" X-IronPort-AV: E=Sophos;i="5.98,323,1673942400"; d="scan'208";a="345432450" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Apr 2023 10:44:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10672"; a="680757347" X-IronPort-AV: E=Sophos;i="5.98,323,1673942400"; d="scan'208";a="680757347" Received: from aalteres-desk.fm.intel.com ([10.80.57.53]) by orsmga007.jf.intel.com with ESMTP; 06 Apr 2023 10:44:27 -0700 From: Alan Previn To: intel-gfx@lists.freedesktop.org Subject: [PATCH v7 2/8] drm/i915/pxp: Add MTL hw-plumbing enabling for KCR operation Date: Thu, 6 Apr 2023 10:44:13 -0700 Message-Id: <20230406174419.471256-3-alan.previn.teres.alexis@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230406174419.471256-1-alan.previn.teres.alexis@intel.com> References: <20230406174419.471256-1-alan.previn.teres.alexis@intel.com> 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: Alan Previn , Tvrtko Ursulin , Juston Li , dri-devel@lists.freedesktop.org, Daniele Ceraolo Spurio , Lionel Landwerlin , Rodrigo Vivi Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add MTL hw-plumbing enabling for KCR operation under PXP which includes: 1. Updating 'pick-gt' to get the media tile for KCR interrupt handling 2. Adding MTL's KCR registers for PXP operation (init, status-checking, etc.). While doing #2, lets create a separate registers header file for PXP to be consistent with other i915 global subsystems. Signed-off-by: Alan Previn Reviewed-by: Daniele Ceraolo Spurio --- drivers/gpu/drm/i915/gt/intel_gt_irq.c | 3 +- drivers/gpu/drm/i915/pxp/intel_pxp.c | 32 ++++++++++++-------- drivers/gpu/drm/i915/pxp/intel_pxp_regs.h | 27 +++++++++++++++++ drivers/gpu/drm/i915/pxp/intel_pxp_session.c | 12 +++----- drivers/gpu/drm/i915/pxp/intel_pxp_types.h | 6 ++++ 5 files changed, 58 insertions(+), 22 deletions(-) create mode 100644 drivers/gpu/drm/i915/pxp/intel_pxp_regs.h diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c index 1b25a6039152..c360776a98b5 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_irq.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c @@ -100,7 +100,8 @@ static struct intel_gt *pick_gt(struct intel_gt *gt, u8 class, u8 instance) case VIDEO_ENHANCEMENT_CLASS: return media_gt; case OTHER_CLASS: - if (instance == OTHER_GSC_INSTANCE && HAS_ENGINE(media_gt, GSC0)) + if ((instance == OTHER_GSC_INSTANCE || instance == OTHER_KCR_INSTANCE) && + HAS_ENGINE(media_gt, GSC0)) return media_gt; fallthrough; default: diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index f93aa171aa1e..8949d4be7882 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -14,6 +14,7 @@ #include "intel_pxp.h" #include "intel_pxp_gsccs.h" #include "intel_pxp_irq.h" +#include "intel_pxp_regs.h" #include "intel_pxp_session.h" #include "intel_pxp_tee.h" #include "intel_pxp_types.h" @@ -61,21 +62,22 @@ bool intel_pxp_is_active(const struct intel_pxp *pxp) return IS_ENABLED(CONFIG_DRM_I915_PXP) && pxp && pxp->arb_is_valid; } -/* KCR register definitions */ -#define KCR_INIT _MMIO(0x320f0) -/* Setting KCR Init bit is required after system boot */ -#define KCR_INIT_ALLOW_DISPLAY_ME_WRITES REG_BIT(14) +static void kcr_pxp_set_status(const struct intel_pxp *pxp, bool enable) +{ + u32 val = enable ? _MASKED_BIT_ENABLE(KCR_INIT_ALLOW_DISPLAY_ME_WRITES) : + _MASKED_BIT_DISABLE(KCR_INIT_ALLOW_DISPLAY_ME_WRITES); + + intel_uncore_write(pxp->ctrl_gt->uncore, KCR_INIT(pxp->kcr_base), val); +} -static void kcr_pxp_enable(struct intel_gt *gt) +static void kcr_pxp_enable(const struct intel_pxp *pxp) { - intel_uncore_write(gt->uncore, KCR_INIT, - _MASKED_BIT_ENABLE(KCR_INIT_ALLOW_DISPLAY_ME_WRITES)); + kcr_pxp_set_status(pxp, true); } -static void kcr_pxp_disable(struct intel_gt *gt) +static void kcr_pxp_disable(const struct intel_pxp *pxp) { - intel_uncore_write(gt->uncore, KCR_INIT, - _MASKED_BIT_DISABLE(KCR_INIT_ALLOW_DISPLAY_ME_WRITES)); + kcr_pxp_set_status(pxp, false); } static int create_vcs_context(struct intel_pxp *pxp) @@ -127,6 +129,11 @@ static void pxp_init_full(struct intel_pxp *pxp) init_completion(&pxp->termination); complete_all(&pxp->termination); + if (pxp->ctrl_gt->type == GT_MEDIA) + pxp->kcr_base = MTL_KCR_BASE; + else + pxp->kcr_base = GEN12_KCR_BASE; + intel_pxp_session_management_init(pxp); ret = create_vcs_context(pxp); @@ -369,14 +376,13 @@ int intel_pxp_start(struct intel_pxp *pxp) void intel_pxp_init_hw(struct intel_pxp *pxp) { - kcr_pxp_enable(pxp->ctrl_gt); + kcr_pxp_enable(pxp); intel_pxp_irq_enable(pxp); } void intel_pxp_fini_hw(struct intel_pxp *pxp) { - kcr_pxp_disable(pxp->ctrl_gt); - + kcr_pxp_disable(pxp); intel_pxp_irq_disable(pxp); } diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_regs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_regs.h new file mode 100644 index 000000000000..a9e7e6efa4c7 --- /dev/null +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_regs.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright(c) 2023, Intel Corporation. All rights reserved. + */ + +#ifndef __INTEL_PXP_REGS_H__ +#define __INTEL_PXP_REGS_H__ + +#include "i915_reg_defs.h" + +/* KCR subsystem register base address */ +#define GEN12_KCR_BASE 0x32000 +#define MTL_KCR_BASE 0x386000 + +/* KCR enable/disable control */ +#define KCR_INIT(base) _MMIO((base) + 0xf0) + +/* Setting KCR Init bit is required after system boot */ +#define KCR_INIT_ALLOW_DISPLAY_ME_WRITES REG_BIT(14) + +/* KCR hwdrm session in play status 0-31 */ +#define KCR_SIP(base) _MMIO((base) + 0x260) + +/* PXP global terminate register for session termination */ +#define KCR_GLOBAL_TERMINATE(base) _MMIO((base) + 0xf8) + +#endif /* __INTEL_PXP_REGS_H__ */ diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_session.c b/drivers/gpu/drm/i915/pxp/intel_pxp_session.c index 7de849cb6c47..7899079e17b0 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_session.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_session.c @@ -10,14 +10,10 @@ #include "intel_pxp_session.h" #include "intel_pxp_tee.h" #include "intel_pxp_types.h" +#include "intel_pxp_regs.h" #define ARB_SESSION I915_PROTECTED_CONTENT_DEFAULT_SESSION /* shorter define */ -#define GEN12_KCR_SIP _MMIO(0x32260) /* KCR hwdrm session in play 0-31 */ - -/* PXP global terminate register for session termination */ -#define PXP_GLOBAL_TERMINATE _MMIO(0x320f8) - static bool intel_pxp_session_is_in_play(struct intel_pxp *pxp, u32 id) { struct intel_uncore *uncore = pxp->ctrl_gt->uncore; @@ -26,7 +22,7 @@ static bool intel_pxp_session_is_in_play(struct intel_pxp *pxp, u32 id) /* if we're suspended the session is considered off */ with_intel_runtime_pm_if_in_use(uncore->rpm, wakeref) - sip = intel_uncore_read(uncore, GEN12_KCR_SIP); + sip = intel_uncore_read(uncore, KCR_SIP(pxp->kcr_base)); return sip & BIT(id); } @@ -44,7 +40,7 @@ static int pxp_wait_for_session_state(struct intel_pxp *pxp, u32 id, bool in_pla return in_play ? -ENODEV : 0; ret = intel_wait_for_register(uncore, - GEN12_KCR_SIP, + KCR_SIP(pxp->kcr_base), mask, in_play ? mask : 0, 100); @@ -108,7 +104,7 @@ static int pxp_terminate_arb_session_and_global(struct intel_pxp *pxp) return ret; } - intel_uncore_write(gt->uncore, PXP_GLOBAL_TERMINATE, 1); + intel_uncore_write(gt->uncore, KCR_GLOBAL_TERMINATE(pxp->kcr_base), 1); intel_pxp_tee_end_arb_fw_session(pxp, ARB_SESSION); diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h index 1e01036d0455..fdd98911968d 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h @@ -26,6 +26,12 @@ struct intel_pxp { */ struct intel_gt *ctrl_gt; + /** + * @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. + */ + u32 kcr_base; + /** * @gsccs_res: resources for request submission for platforms that have a GSC engine. */