From patchwork Mon Mar 21 22:44:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 12787842 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 5F45FC433F5 for ; Mon, 21 Mar 2022 22:44:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6DDAC10E05A; Mon, 21 Mar 2022 22:44:27 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB7C310E05A; Mon, 21 Mar 2022 22:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647902665; x=1679438665; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=beTDsanJLIJS77JHg88G3vaK95cfaCaDvvCRAhs8skI=; b=TYPLtX++piU6VSbjQDGf8iaKm4/pnvRqjnVWZ4XllMrQu1o26GHU/XcR 5m7Gz+LqTBYiF+US8/4ca+xnD+ibgou1SXtjrm9vC0k5CSPlPpvgGhrHB c4gm9W+xefU/M6F3f+6wTubUkvVhNQbMTumjSWMsRShlgp+yQH5H7SBxM 8UubdpkQl5X9js8DBFkTV7L0hlisi7g+Tgh5djdQTeyZHdm5SrbT0RI4F yWAflLtJCgzd4JANaL3EKj4pPphmrnZjVu2IqAd2U7beVVekiQdewVj+r GXV98nZZEnx8GCfnsq2tTSj8m5jxItDbCE/0ArCP1Hd5PnD8SgXkklGwT Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10293"; a="257613675" X-IronPort-AV: E=Sophos;i="5.90,199,1643702400"; d="scan'208";a="257613675" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2022 15:44:25 -0700 X-IronPort-AV: E=Sophos;i="5.90,199,1643702400"; d="scan'208";a="543414163" Received: from ramaling-i9x.iind.intel.com ([10.203.144.108]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2022 15:44:23 -0700 From: Ramalingam C To: intel-gfx , dri-devel Subject: [PATCH v5 0/9] drm/i915/ttm: Evict and restore of compressed object Date: Tue, 22 Mar 2022 04:14:50 +0530 Message-Id: <20220321224459.12223-1-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: , Cc: Hellstrom Thomas , Matthew Auld 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 v5: Correct locating of ccs data [Thomas] Reuse of emit_copy_ccs. R-bs picked. Test-with: 20220314051432.15785-1-ramalingam.c@intel.com Ramalingam C (9): 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/i915/gt: offset handling for multiple copy engines 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 | 29 +- drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 20 + drivers/gpu/drm/i915/gt/intel_migrate.c | 409 +++++++++++++++++-- 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, 664 insertions(+), 71 deletions(-)