From patchwork Fri Apr 1 12:37:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 12798262 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 9C90FC433EF for ; Fri, 1 Apr 2022 12:37:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B348510E139; Fri, 1 Apr 2022 12:37:11 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5F63510E0A0; Fri, 1 Apr 2022 12:37:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1648816630; x=1680352630; h=from:to:subject:date:message-id:mime-version: content-transfer-encoding; bh=kfWtvLNFvXKKJmqHPjx1bqkB72+eWUO1BHjOQpO5xOE=; b=d6lfncPbA0fQCSQO42oUrkzmtehghOHlSypksefvHnE/JG/1cdHBcTlv +a3KelPJY/gOKGK7AKy43d7JJwQ/s9jpiFpVuT8WSold9p0GltQuwBxAA Ie81oz9QQ2p3WFsUqQa+1dQDhpkxSsrYZmOoRE83wLmp4dUfNgZR6Mk1V LyrAxpUK7LVRZq+bs4K9TbRlpCB5R1iXYRVQlOZtUp7oX8QP9bdT+5BHX g4QLxoX8K4E2Vs4xGaEf/cOyvJY3632fQ1QZEdz9tzRGPFubxbrfZXZHM +oVQCgKPfaAGIN1Fd5ryKg+/0M9jFO37KfC4G5KB5bCqEOVrM7BaXsPUs Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10303"; a="257708051" X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="257708051" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 05:37:10 -0700 X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="606725169" Received: from ramaling-i9x.iind.intel.com ([10.203.144.108]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 05:37:08 -0700 From: Ramalingam C To: intel-gfx , dri-devel Subject: [PATCH v7 0/9] drm/i915/ttm: Evict and restore of compressed object Date: Fri, 1 Apr 2022 18:07:42 +0530 Message-Id: <20220401123751.27771-1-ramalingam.c@intel.com> X-Mailer: git-send-email 2.20.1 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Xe-HP and later devices, we use dedicated compression control state (CCS) stored in local memory for each surface, to support the 3D and media compression formats. The memory required for the CCS of the entire local memory is 1/256 of the local memory size. So before the kernel boot, the required memory is reserved for the CCS data and a secure register will be programmed with the CCS base address So when we allocate a object in local memory we dont need to explicitly allocate the space for ccs data. But when we evict the obj into the smem to hold the compression related data along with the obj we need smem space of obj_size + (obj_size/256). Hence when we create smem for an obj with lmem placement possibility we create with the extra space. When we are swapping out the local memory obj on flat-ccs capable platform, we need to capture the ccs data too along with main meory and we need to restore it when we are swapping in the content. When lmem object is swapped into a smem obj, smem obj will have the extra pages required to hold the ccs data corresponding to the lmem main memory. So main memory of lmem will be copied into the initial pages of the smem and then ccs data corresponding to the main memory will be copied to the subsequent pages of smem. Swapin happens exactly in reverse order. First main memory of lmem is restored from the smem's initial pages and the ccs data will be restored from the subsequent pages of smem. Extracting and restoring the CCS data is done through a special cmd called XY_CTRL_SURF_COPY_BLT v7: GEM_BUG_ON is added for catching if inflated pages are filled for get_pages Optimised emit_copy_clear Engine index is directly used for the upper 32 bits of offset Use FAT_COLOR_BLT only for FLAT_CCS capable platforms Resending with updated igt version for test with. Test-with: 20220401074527.15709-2-ramalingam.c@intel.com Ramalingam C (9): drm/i915/gt: use engine instance directly for offset drm/i915/gt: Use XY_FAST_COLOR_BLT to clear obj on graphics ver 12+ drm/i915/gt: Optimize the migration and clear loop drm/i915/gt: Clear compress metadata for Flat-ccs objects drm/i915/selftest_migrate: Consider the possible roundup of size drm/i915/selftest_migrate: Check CCS meta data clear drm/ttm: Add a parameter to add extra pages into ttm_tt drm/i915/gem: Add extra pages in ttm_tt for ccs data drm/i915/migrate: Evict and restore the flatccs capable lmem obj drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 30 +- drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 21 + drivers/gpu/drm/i915/gt/intel_migrate.c | 387 +++++++++++++++++-- drivers/gpu/drm/i915/gt/selftest_migrate.c | 253 ++++++++++-- drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- drivers/gpu/drm/ttm/ttm_tt.c | 12 +- drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- include/drm/ttm/ttm_tt.h | 4 +- 10 files changed, 642 insertions(+), 73 deletions(-)