From patchwork Sat Mar 19 20:42:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 12786343 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 F258DC433FE for ; Sat, 19 Mar 2022 20:42:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 465EA10E63B; Sat, 19 Mar 2022 20:41:58 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id BEDBD10E22C; Sat, 19 Mar 2022 20:41:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647722516; x=1679258516; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=t4c+yRgaotKssQlq7/FbcHF2Dfpe2A/FHgvMK1C0nD8=; b=nokno3IAjgyyJR+heY7FrOLM1D/E7fVJ+D7S2mss948ppW2oKmnq34BB QzSSN1m+9xRTXKsQAbr7UK6LBHaeMcSxII11Y8pdB8J/sGCglPwnHpszs P/mgwh40yJ7guIj6ScHheYyxwVm4qTXvWAglpqGJA6fYkIpZTBx/1cM20 wQKRuqjz04XB1NxrBWol0pZJPKSevkByfXXvQa9ehW9Y2/s+ds7G+US4j N5TlLENk5Z3aTCgfLjJLqeyDug2ZefGUCKyRd+lQbBmZxIZXvzVtL6ugg acm9VjXPG9nkHl6fP8PhtnPVQeienD2pXa7RR+9oewOz5iZzvFjPBhDT2 w==; X-IronPort-AV: E=McAfee;i="6200,9189,10291"; a="237270082" X-IronPort-AV: E=Sophos;i="5.90,195,1643702400"; d="scan'208";a="237270082" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Mar 2022 13:41:56 -0700 X-IronPort-AV: E=Sophos;i="5.90,195,1643702400"; d="scan'208";a="559244950" Received: from ramaling-i9x.iind.intel.com ([10.203.144.108]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Mar 2022 13:41:54 -0700 From: Ramalingam C To: intel-gfx , dri-devel Subject: [PATCH v4 0/8] drm/i915/ttm: Evict and restore of compressed object Date: Sun, 20 Mar 2022 02:12:21 +0530 Message-Id: <20220319204229.9846-1-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 v4: Inflate the ttm_tt only when the obj is lmem only. Back to XY_CTRL_SURF_COPY_BLT to clear the ccs, as FAST_CLEAR_0 failed. Add a selftest for testing the ccs clearing. Test-with: 20220314051432.15785-1-ramalingam.c@intel.com Ramalingam C (8): drm/i915/gt: Use XY_FASR_COLOR_BLT to clear obj on graphics ver 12+ 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: Optimize the migration loop 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 | 404 +++++++++++++++++-- drivers/gpu/drm/i915/gt/selftest_migrate.c | 277 +++++++++++-- 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, 688 insertions(+), 66 deletions(-)