From patchwork Thu Jul 1 15:47:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Michael J. Ruhl" X-Patchwork-Id: 12354457 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D9A7C11F64 for ; Thu, 1 Jul 2021 15:48:08 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id AB69361410 for ; Thu, 1 Jul 2021 15:48:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB69361410 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EACF26E039; Thu, 1 Jul 2021 15:48:06 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1B51F6E039; Thu, 1 Jul 2021 15:48:06 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10032"; a="205554370" X-IronPort-AV: E=Sophos;i="5.83,314,1616482800"; d="scan'208";a="205554370" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2021 08:48:05 -0700 X-IronPort-AV: E=Sophos;i="5.83,314,1616482800"; d="scan'208";a="447938295" Received: from awvttdev-05.aw.intel.com ([10.228.212.156]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2021 08:48:04 -0700 From: "Michael J. Ruhl" To: michael.j.ruhl@intel.com, daniel@ffwll.ch, thomas.hellstrom@linux.intel.com, ckoenig.leichtzumerken@gmail.com, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, matthew.auld@intel.com, maarten.lankhorst@linux.intel.com Subject: [PATCH 2/2] drm/i915/gem: Migrate to system at dma-buf attach time Date: Thu, 1 Jul 2021 11:47:54 -0400 Message-Id: <20210701154754.665034-2-michael.j.ruhl@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210701154754.665034-1-michael.j.ruhl@intel.com> References: <20210701154754.665034-1-michael.j.ruhl@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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thomas Hellström Until we support p2p dma or as a complement to that, migrate data to system memory at dma-buf attach time if possible. v2: - Rebase on dynamic exporter. Update the igt_dmabuf_import_same_driver selftest to migrate if we are LMEM capable. v3: - Migrate also in the pin() callback. v4: - Migrate in attach Signed-off-by: Thomas Hellström Signed-off-by: Michael J. Ruhl --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 12 +++++++++++- drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c | 4 +++- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c index 8c528b693a30..a325f33f35b8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -170,9 +170,19 @@ static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach) { struct drm_i915_gem_object *obj = dma_buf_to_obj(dmabuf); + int ret; assert_object_held(obj); - return i915_gem_object_pin_pages(obj); + + if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM)) + return -EOPNOTSUPP; + ret = i915_gem_object_migrate(obj, NULL, INTEL_REGION_SMEM); + if (!ret) + ret = i915_gem_object_wait_migration(obj, 0); + if (!ret) + ret = i915_gem_object_pin_pages(obj); + + return ret; } static void i915_gem_dmabuf_detach(struct dma_buf *dmabuf, diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c index 868b3469ecbd..b1e87ec08741 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c @@ -106,7 +106,9 @@ static int igt_dmabuf_import_same_driver(void *arg) int err; force_different_devices = true; - obj = i915_gem_object_create_shmem(i915, PAGE_SIZE); + obj = i915_gem_object_create_lmem(i915, PAGE_SIZE, 0); + if (IS_ERR(obj)) + obj = i915_gem_object_create_shmem(i915, PAGE_SIZE); if (IS_ERR(obj)) goto out_ret;